Patent Publication Number: US-2023139256-A1

Title: Electronic device displaying information guiding alignment with charging device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International Application No. PCT/KR2022/007615 designating the United States, filed on May 27, 2022, in the Korean Intellectual Property Receiving Office and claiming priority to Korean Patent Application No. 10-2021-0149479, filed on Nov. 3, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. 
    
    
     BACKGROUND 
     Technical Field 
     This disclosure relates to an electronic device displaying information for guiding an alignment with a charging device. 
     Description of Related Art 
     An electronic device such as a smartphone, a tablet personal computer (PC), a smart watch, and the like, may include a power receiver to obtain electric power wirelessly, for providing enhanced convenience. The power obtained wirelessly through the power receiver through a coil in the electronic device can be used to charge a battery in the electronic device. 
     SUMMARY 
     An electronic device may wirelessly obtain electric power from an external electronic device to charge a rechargeable battery within the electronic device with the obtained power. For the electronic device to wirelessly acquire the power, at least one coil in the electronic device needs to be located within a certain distance from at least one coil in the external electronic device. Accordingly, in the case where the electronic device is mounted onto or positioned relative to the external electronic device with the at least one coil of the electronic device being spaced apart from the at least one coil in the external electronic device over a certain distance, a user of the electronic device may receive a kind of notification to be served in the electronic device as an alarm. 
     The electronic device, in use, may provide either a folding state or an unfolding state through a flexible display, or provide either a state in which a part of a display area of the flexible display is rolled up or a state in which the entire display area of the flexible display is exposed. The efficiency of wirelessly acquiring the power from any external electronic device may change depending on different states of the electronic device, and therefore, a scheme of enabling the electronic device to provide the notification on different information according to various states of the electronic device in use may be implemented. 
     The technical problems to be achieved in this document are not limited to those described above, and other technical problems not mentioned herein can be clearly understood by those of ordinary skill in the art to which the present disclosure belongs from the description below. 
     According to an embodiment, provided is an electronic device including a first housing including a first surface and a second surface opposite the first surface, a second housing including a third surface and a fourth surface faced away the third surface, a third housing including a hinge structure pivotably connecting a first side surface of the first housing and a second side surface of the second housing facing the first side surface of the first housing, a display including a flexible display disposed on the first surface and the third surface and extending across the third housing, a battery that is rechargeable, a memory configured to store instructions, and a processor, when executing the instructions, configured to receive a wireless signal for charging the battery from an external electronic device; based on detecting, while a state of the electronic device is a first state in which an angle between a first direction the first surface faces and a second direction the third surface faces is within a first range, that a power provided based on the wireless signal is less than a designated power, display, via the display, a first screen including first information guiding the electronic device to be aligned with the external electronic device for charging of the battery; and based on detecting, while the state of the electronic device is a second state in which the angle is within a second range different from the first range, that the power is less than the designated power, display, via the display, a second screen including the first information and second information guiding to change the state to the first state. 
     According to an embodiment, provided is an electronic device including a housing, a display rollable into the housing, a battery that is rechargeable, a memory configured to store instructions, and a processor, when executing the instructions, configured to receive, from an external electronic device, a wireless signal for charging the battery; based on detecting, while the electronic device is in a first state in which a first display area of the display is exposed and a second display area of the display adjacent to the first display area is rolled into the housing, that a power provided based on the wireless signal is less than a designated power, display, within the first display area, a first screen including first information guiding the electronic device to be aligned with the external electronic device for charging of the battery; based on detecting, while the electronic device is in a second state in which both the first display area and the second display area are exposed, that the power is less than the designated power, display, within the first display area and the second display area, a second screen including the first information and second information guiding to change the state of the electronic device to the first state. 
     The effects that can be obtained from the present disclosure are not limited to those described above, and other effects yet mentioned herein are to be clearly understood by those of ordinary skill in the art to which the present disclosure belongs from the following description below. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features, and advantages of certain embodiments of the disclosure will be more apparent from the following description, taken in conjunction with the accompanying drawings, in which: 
         FIG.  1 A  illustrates examples of an environment including an electronic device and an external electronic device according to an embodiment; 
         FIG.  1 B  illustrates an example of an environment including an electric device, another electric device, and an external electronic device according to an embodiment; 
         FIG.  1 C  is a simplified block diagram of an electronic device according to an embodiment; 
         FIGS.  2 A,  2 B,  3 A,  3 B,  4 A and  4 B  each illustrate examples of various states of an electronic device; 
         FIG.  5 A  is a flowchart illustrating a method of displaying a screen including information to guide an electronic device to be aligned with an external electronic device according to an embodiment; 
         FIG.  5 B  illustrates examples of a screen displayed according to an embodiment; 
         FIG.  6 A  is a flowchart illustrating a method of displaying a screen based on whether an electronic device is in a folding state according to an embodiment; 
         FIGS.  6 B,  6 C and  6 D  illustrate examples of various screens displayed either in an unfolding state or in a folding state according to an embodiment; 
         FIG.  7 A  is a flowchart illustrating a method of switching a screen according to an embodiment; 
         FIG.  7 B  illustrates examples of screens switched in an unfolding state or a folding state according to an embodiment; 
         FIG.  7 C  illustrates an example of providing a notification through a wearable electronic device when electric power is kept at less than a predetermined power level, according to an embodiment; 
         FIG.  8    is a flowchart illustrating a method of wirelessly acquiring electric power according to an embodiment; 
         FIG.  9    is a flowchart illustrating a method of identifying a relative location relationship between an electronic device and an external electronic device through a ultra-wide band (UWB) communication circuitry according to an embodiment; 
         FIG.  10    is a flowchart illustrating a method of identifying a relative location relationship between an electronic device and an external electronic device through a near-field communication (NFC) communication circuitry according to an embodiment; 
         FIG.  11    is a flowchart illustrating a method of identifying a relative location relationship between an electronic device and an external electronic device through at least one second coil according to an embodiment; 
         FIG.  12 A  is a flowchart illustrating a method of providing a notification when a surface of a housing of an electronic device including a display comes into contact with an external electronic device according to an embodiment; 
         FIG.  12 B  illustrates an example of a notification provided when a surface of a housing of an electronic device including a display comes into contact with an external electronic device, according to an embodiment; 
         FIG.  13 A  is a flowchart illustrating a method of displaying a screen based on a state of an electronic device including a rollable display according to an embodiment; 
         FIG.  13 B  illustrates examples of various screens displayed through a rollable display exposed to the outside according to an embodiment; and 
         FIG.  14    is a flowchart illustrating a method of providing notifications guiding to change state of the electronic device according to an embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     An electronic device according to an embodiment of the present disclosure can provide an enhanced user experience by adaptively providing a notification according to different states of the electronic device mounted onto or positioned relative to an external electronic device wirelessly providing the electric power. 
     The disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown. This disclosure may, however, be embodied in many different forms, and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Like reference numerals refer to like elements throughout. 
     It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. 
     It will be understood that, although the terms “first,” “second,” “third” etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, “a first element,” “component,” “region,” “layer” or “section” discussed below could be termed a second element, component, region, layer or section without departing from the teachings herein. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, “a”, “an,” “the,” and “at least one” do not denote a limitation of quantity, and are intended to include both the singular and plural, unless the context clearly indicates otherwise. For example, “an element” has the same meaning as “at least one element,” unless the context clearly indicates otherwise. “At least one” is not to be construed as limiting “a” or “an.” “Or” means “and/or.” As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms “comprises” and/or “comprising,” or “includes” and/or “including” when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof. 
     Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element&#39;s relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The term “lower,” can therefore, encompasses both an orientation of “lower” and “upper,” depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The terms “below” or “beneath” can, therefore, encompass both an orientation of above and below. 
     “About” or “approximately” as used herein is inclusive of the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, considering the measurement in question and the error associated with measurement of the particular quantity (i.e., the limitations of the measurement system). For example, “about” can mean within one or more standard deviations, or within ±30%, 20%, 10% or 5% of the stated value. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Embodiments are described herein with reference to cross section illustrations that are schematic illustrations of idealized embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments described herein should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, a region illustrated or described as flat may, typically, have rough and/or nonlinear features. Moreover, sharp angles that are illustrated may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the present claims. 
       FIG.  1 A  illustrates examples of an environment including an electronic device and an external electronic device according to an embodiment. 
     Referring to  FIG.  1 A , an environment  100  may include an electronic device  101  and an external electronic device  102 . In an embodiment, the electronic device  101  may be a device that wirelessly acquires electric power from the external electronic device  102  to charge at least one rechargeable battery in the electronic device  101 . For example, the electronic device  101  may be a user device having at least one display, such as a smartphone, a tablet device, a laptop computer, a smart watch, augmented reality (AR) glasses or the like. In an embodiment, the external electronic device  102  may be a device that wirelessly provides the electronic device  101  with the electric power for charging the at least one battery in the electronic device  101 . For example, the external electronic device  102  may be a charging device or a charger such as a charging pad, a charging cradle, or a user device (e.g., a smartphone) capable of providing a function for charging at least one battery in another electronic device (e.g., an electronic device  101 ). 
     For example, the electronic device  101  may receive a wireless signal from at least one coil in the external electronic device  102  through at least one coil in the electronic device  101 , and charge the at least one battery using the power provided based on the wireless signal. For example, the electronic device  101  may charge the at least one battery based on the wireless signal received from the external electronic device  102 , while being mounted on or positioned relative to the external electronic device  102 . 
     For example, the charging efficiency for the at least one battery performed based on the wireless signal may change depending upon a distance between at least one coil in the electronic device  101  and at least one coil in the external electronic device  102 . For example, the distance between the at least one coil of the electronic device  101  and the at least one coil in the external electronic device  102  may vary depending on how the electronic device  101  is mounted on or positioned relative to the external electronic device  102 . For example, on condition that the electronic device  101  is aligned with the external electronic device  102 , as in an arrangement  103 , an arrangement  105 , and an arrangement  107 , respectively, the at least one coil within the electronic device  101  may be properly adjacent to the at least one coil within the external electronic device  102 . The charging efficiency may be represented as a first value in an arrangement in which the at least one coil in the electronic device  101  is adjacent to the at least one coil in the external electronic device  102 . For another example, on condition that the electronic device  101  is not properly aligned (i.e., misaligned) with the external electronic device  102 , as seen in the arrangement  104 , the arrangement  106 , and the arrangement  108 , respectively, the at least one coil may be placed spaced apart from the at least one coil in the external electronic device  102  over a certain distance. The charging efficiency may be represented as a second value lower than the first value, in an arrangement in which the at least one coil in the electronic device  101  is located spaced apart from the at least one coil in the external electronic device  102  over the certain distance. In other words, the charging efficiency when the electronic device  101  is mounted on or positioned relative to the external electronic device  102  in an arrangement (e.g., one or more of the arrangements  104 ,  106 , and  108 ) of being not properly aligned with the external electronic device  102  may be lower than the charging efficiency when it is mounted on or positioned relative to the external electronic device  102  in an arrangement (e.g., one or more of the arrangements  103 ,  105 , and  107 ) of being fittingly aligned with the external electronic device  102 . Accordingly, on condition that the electronic device  101  is not fittingly mounted onto or positioned relative to the external electronic device  102  for charging the at least one battery, as seen in each of the arrangements  104 ,  106 , and  108 , the electronic device  101  may control to provide a notification or information as an alarm or alert. 
     In an embodiment, another electronic device  101 ′ is a device that includes at least one battery but does not include a display. For example, the another electronic device  101 ′ could be wireless headphones, a charging case for a device such as wireless headphones or the like. As an example,  FIG.  1 B  illustrates an environment including the electronic device  101  (having a display  125 ), the another electronic device  101 ′ (without a display), and the external electronic device  102  according to an embodiment. In such an embodiment, the another electronic device  101 ′ can be communicatively coupled (shown as link  112 ) with the electronic device  101  using one or more of cellular communication, Bluetooth, near-field communication (NFC), wireless fidelity (Wi-Fi), ultra-wide band (UWB) communication, etc. This provides for communication between the electronic device  101  and the another electronic device  101 ′. The another electronic device  101 ′ may receive a wireless signal from at least one coil in the external electronic device  102  through at least one coil in the electronic device  101 , and charge the at least one battery using the power provided based on the wireless signal. For example, the electronic device  101  may charge the at least one battery based on the wireless signal received from the external electronic device  102 , while being mounted on or positioned relative to the external electronic device  102 . 
     A wireless signal can be transmitted from a coil of the electronic device  102  to a coil of the another electronic device  101 ′. For example, based on the reception strength of the wireless signal received through the coil of the another electronic device  101 ′, the processor  110  may identify the relative positional relationship between the external device  102  and the another electronic device  101 ′. A screen can then be displayed on the display  125  of the electronic device  101  including information to guide the another electronic device  101 ′ to be aligned with the external electronic device  102  for charging a battery of the another external electronic device  101 ′. 
       FIG.  1 C  is a simplified block diagram of an electronic device according to an embodiment. The block diagram may represent at least a part of functional configurations or components of the electronic device  101  illustrated in  FIG.  1 A  and  FIG.  1 B . 
     Referring to  FIG.  1 C , the electronic device  101  may include a processor  110 , a memory  120 , a display  125 , a communication circuitry  130 , a power management integrated circuitry (PMIC)  140 , a battery  150 , a coil  160 , and a sensor  170 . 
     The processor  110  may control the overall operation of the electronic device  101 . For example, the processor  110  may write data into the memory  120  and read out data from the memory  120 . As another example, the processor  110  may display information on the display  125 . As another example, the processor  110  may be configured to transmit signals via the communication circuitry  130  to another electronic device (e.g., an external electronic device  102 , a wearable device  777  shown in  FIG.  7 C , or a wearable device  778  shown in  FIG.  7 C ), and/or receive signals from another electronic device (e.g., an external electronic device  102 , a wearable device  777  shown in  FIG.  7 C , or a wearable device  778  shown in  FIG.  7 C ). According to various embodiments, the processor  110  may include a plurality of processors. For example, the processor  110  may include an application processor (AP) to control an upper layer of elements such as an application and so on, a communication processor (CP) to control communications, and a display controller to control a screen displayed on the display  125 , and so on. 
     The processor  110  may be configured to implement the procedures and/or methods proposed in the present disclosure. 
     The memory  120  may store one or more instructions for controlling the electronic device  101 , a set of control command codes, control data, user data or the like. For example, the memory  120  may store an application, an operating system (OS), a middleware, a device driver or the like. 
     The memory  120  may include one or more volatile memories or non-volatile memories. The volatile memory may include, for example, a dynamic RAM (DRAM), a static RAM (SRAM), a synchronous DRAM (SDRAM), a phase-change RAM (PRAM), a magnetic RAM (MRAM), a resistive RAM (RRAM), a ferroelectric RAM (FeRAM), and the like. The non-volatile memory may include, for example, a read only memory (ROM), a programmable ROM (PROM), an electrically programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a flash memory, and so on. 
     The memory  120  may include a non-volatile medium such as a hard disk drive (HDD), a solid state disk (SSD), an embedded multi-media card (eMMC), a universal flash storage (UFS), and so on. 
     The memory  120  may be operably or operatively connected or coupled with the processor  110 . 
     The display  125  may be a liquid crystal display (LCD) or a light emitting diode (LED) display. The display  125  may display various types of information (e.g., multimedia, text data, etc.) to the user. For example, the display  125  may display a graphical user interface (GUI) so that the user can interact with the electronic device  101 . 
     The display  125  may be implemented in various forms. For example, the display  125  may be implemented as multiple displays including a plurality of displays. For another example, the display  125  may be implemented as an edge display including a planar display portion and at least one curved display portion extending from the planar portion. As another example, the display  125  may be implemented as a foldable display. As another example, the display  125  may be implemented as a rollable display. However, the examples are not limited thereto. 
     The display  125  may be implemented as a touch screen to receive a touch input. For example, the touch input may include at least one of a single-tap input, a double-tap input, a hovering input, a hold and release input, and a drag and drop input. However, the input is not limited thereto. 
     The display  125  may be operably or operatively coupled with processor  110 . 
     The communication circuitry  130  may have various communication functions (e.g., cellular communication, Bluetooth, NFC, Wi-Fi, UWB communication, etc.) for communication between the electronic device  101  and at least one external device (e.g., an external electronic device  102 ). In other words, the communication circuitry  130  may establish communication between the electronic device  101  and the at least one external device. 
     The communication circuitry  130  may be operably or operatively coupled with the processor  110 . 
     The PMIC  140  may be configured to provide the power obtained from the battery  150  to each of various components within the electronic device  101  (e.g., the processor  110 , the memory  120 , the display  125 , the communication circuitry  130 , and/or the sensor  170 ), under the control of the processor  110 . The PMIC  140  may be used to charge the battery  150  based on the power obtained through the coil  160  under the control of the processor  110 . 
     The PMIC  140  may be operably or operatively coupled with the processor  110 . 
     The battery  150  may be used to provide the power for driving the components in the electronic device  101 . In an embodiment, the battery  150  may include at least one battery. In an embodiment, the battery  150  may include at least one rechargeable battery. 
     The coil  160  may be configured to receive a wireless signal for charging the battery  150  from the outside. For example, the coil  160  may be configured to receive the wireless signal emitted, outputted, or transmitted from the coil of the external electronic device  102 . The wireless signal may be provided to the PMIC  140  through the coil  160 . However, it is not limited thereto. 
     The sensor  170  may obtain data for identifying a state of the electronic device  101  or a state in the vicinity of the electronic device  101 . For example, the sensor  170  may include at least one of a gyro sensor, an acceleration sensor, a geomagnetic sensor, or the like. 
     The sensor  170  may be operably or operatively coupled with the processor  110 . 
       FIGS.  2 A,  2 B,  3 A,  3 B,  4 A and  4 B  illustrate examples of different states of an electronic device. The electronic device may include the electronic device  101  illustrated in  FIG.  1 A  and  FIG.  1 B  or the electronic device  101  illustrated in  FIG.  1 C . 
     The electronic device  101  may have various form factors. 
     In an embodiment, the electronic device  101  may be a bar type of electronic device. 
     In an embodiment, the electronic device  101  may be a foldable electronic device including a foldable display (e.g., a display  125 ). For example, the electronic device  101  may provide various states through the foldable display. For example, the electronic device  101  may provide an unfolding state and a folding state. 
     For example, referring to  FIG.  2 A , the electronic device  101  may be in an unfolding state  200  in which a first housing  210  and a second housing  220  are fully folded out by a hinge structure within a third housing (e.g., a third housing  265  shown in  FIG.  2 B ). In an embodiment, the state  200  may mean a state that a first direction  201  in which a first surface  211  of the first housing  210  faces corresponds to a second direction  202  in which a second surface  221  of the second housing  220  faces. For example, in the state  200 , the first direction  201  may be substantially parallel to the second direction  202 . For example, in the state  200 , the first direction  201  may be in the same direction as the second direction  202 . In an embodiment, in the state  200 , the first surface  211  may form a substantially flat surface with the second surface  221 . In an embodiment, an angle  203  between the first surface  211  and the second surface  221  in the state  200  may be substantially 180 degrees. In an embodiment, the state  200  may stand for a state that the entire display area of the foldable display can be provided substantially on one plane. For example, in the state  200 , the display area of the foldable display may not have any curved surface. The unfolding state may be referred to as either one of an unfolded state, an outspread state or an outspreading state. 
     For another example, referring to  FIG.  2 B , the electronic device  101  may provide different folding states such as a state  250 , a state  260 , and a state  270 , in which the first housing  210  and the second housing  220  are partially or fully folded by a hinge structure in the third housing  265 . In an embodiment, in the folding state having the state  250 , the state  260  and the state  270 , the first direction  201  in which the first surface  211  faces may become different from the second direction  202  in which the second surface  221  faces. For example, in the state  250 , the angle between the first direction  201  and the second direction  202  may be substantially 45 degrees so that the first direction  201  and the second direction  202  are distinct from each other, and in the state  260 , the angle between the first direction  201  and the second direction  202  may be substantially 90 degrees so that the first direction  201  and the second direction  202  are distinct from each other, and further, in the state  270 , the angle between the first direction  201  and the second direction  202  may be substantially 180 degrees so that the first direction  201  and the second direction  202  are quite different from, rather opposite to, each other. In an embodiment, the angle between the first surface  211  and the second surface  221  in the folding state may be substantially greater than or equal to substantially 0 degrees and less than substantially 180 degrees. For example, in the state  250 , the angle  253  between the first surface  211  and the second surface  221  may be substantially 135 degrees, in the state  260 , the angle  263  between the first surface  211  and the second surface  221  may be substantially 90 degrees, and in the state  270 , the angle  273  between the first surface  211  and the second surface  221  may be substantially 0 degrees. The folding state may be referred to as a folded state. 
     The folding state may have a plurality of sub-folding states, unlike the unfolding state. For example, the folding state may include the plurality of sub-folding states including, for instance, a fully folding state  270  in which the first surface  211  substantially fully overlaps the second surface  221  by rotation about the hinge structure within the third housing  265 , the state  250 , and the state  260 , both of which states  250  and  260  correspond to an intermediate folding state between the fully folding state  270  and the unfolding state (e.g., a state  200  of  FIG.  2 A ). For example, the electronic device  101  may provide the state  270  in which the first surface  211  and the second surface  221  are caused to face each other by means of the hinge structure in the third housing  265 . Further, for example, the electronic device  101  may provide the state  270  in which the first direction  201  is substantially opposite to the second direction  202 . As another example, the state  270  may stand for a state in which the display area of the foldable display is not viewed from a user looking at the electronic device  101 . However, it is not limited thereto. 
     In an embodiment, in relation to charging the battery  150  based on a wireless signal received from the external electronic device  102 , a plurality of states may be defined in the electronic device  101 . For example, a first state of the plurality of states may be a state in which an angle between the first direction  201  and the second direction  202  is within a first range (e.g., substantially 170 degrees to substantially 190 degrees). For example, the first state may include the state  270 . For example, a second state of the plurality of states may be a state in which the angle between the first direction  201  and the second direction  202  is within a second range (e.g., between substantially −5 degrees to substantially +5 degrees) distinct from the first range. For example, the second state may include the state  200 . 
     For example, various sensors may be used to identify whether the electronic device  101  is in either the first state or the second state. For example, the processor  110  may identify the angle by means of at least one of a hall sensor in the electronic device  101 , acceleration sensors in the electronic device  101 , or gyro sensors in the electronic device  101 . For example, the hall sensor making up a pair with a magnet in the second housing  220  may be included in the first housing  210 . For example, the hall sensor making up a pair with the magnet in the first housing  210  may be included in the second housing  220 . For example, a first acceleration sensor of the acceleration sensors may be included in the first housing  210 , and a second acceleration sensor of the acceleration sensors may be included in the second housing  220 . For example, a first gyro sensor of the gyro sensors may be included in the first housing  210 , and a second gyro sensor of the gyro sensors may be included in the second housing  220 . However, it is not limited thereto. 
     Although not shown in  FIGS.  2 A and  2 B , the electronic device  101  may have another display distinct from the foldable display, on a surface of the second housing  220  opposite the second surface  221  of the second housing  220 . The other display will be described in more detail in the following description. 
     In an embodiment, the electronic device  101  may be another foldable electronic device distinguished from the foldable electronic device illustrated in  FIGS.  2 A and  2 B . For example, the electronic device  101 , which is the other foldable electronic device, may include another foldable display that can be folded in another direction distinct from the direction in which the foldable display of the foldable electronic device shown in  FIGS.  2 A and  2 B  can be folded. For example, the electronic device  101  may provide various states via the other foldable display. For example, the electronic device  101  may provide an unfolding (or unfolded) state and a folding (or folded) state. 
     For example, referring to  FIG.  3 A , the electronic device  101  may be in a an unfolding state  300  in which a first housing  310  and a second housing  320  are fully folded out by rotation about a hinge structure within a third housing (a third housing  365  illustrated in  FIG.  3 B ). In an embodiment, the state  300  may stand for a state that a first direction  301  in which a first surface  311  of a first housing  310  faces corresponds to a second direction  302  in which a second surface  321  of a second housing  320  faces. For example, in the state  300 , the first direction  301  may be substantially parallel to the second direction  302 . For example, in the state  300 , the first direction  301  may be substantially in the same direction as the second direction  302 . In an embodiment, in the state  300 , the first surface  311  may form a substantially flat surface with the second surface  321 . In an embodiment, an angle  303  between the first surface  311  and the second surface  321  in the state  300  may be substantially 180 degrees. In an embodiment, the state  300  may mean a state in which the entire display area of the foldable display can be provided substantially on a single plane. For example, in the state  300 , the display area of the foldable display may not include any curved surface. The unfolding state may be referred to as either one of an unfolded state, an outspread state or an outspreading state. 
     For another example, referring to  FIG.  3 B , the electronic device  101  may provide different states such as a state  350 , a state  360  and a state  370  in the folding state, in which the first housing  310  and the second housing  320  are partially or fully folded by rotation of a hinge structure within the third housing  365 . In an embodiment, the folding state including the state  350 , the state  360  and the state  370  may stand for a state that the first direction  301  in which the first surface  311  faces becomes different from the second direction  302  in which the second faces. For example, in the state  350 , the angle between the first direction  301  and the second direction  302  may be substantially 45 degrees so that the first direction  301  and the second direction  302  are distinct from each other, and in the state  360 , the angle between the first direction  301  and the second direction  302  may be substantially 90 degrees so that the first direction  301  and the second direction  302  are distinct from each other, and further, in the state  370 , the angle between the first direction  301  and the second direction  302  may be substantially 180 degrees so that the first direction  301  and the second direction  302  are distinct from, rather opposed to, each other. In an embodiment, the angle between the first surface  311  and the second surface  321  in the folding state may be greater than or equal to substantially 0 degree and less than substantially 180 degrees. For example, in the state  350  the angle  353  between the first surface  311  and the second surface  321  may be substantially 135 degrees, in the state  360  the angle  363  between first surface  311  and second surface  321  may be substantially 90 degrees, and in the state  370  the angle  373  between the first surface  311  and the second surface  321  may be substantially 0 degree. The folding state may be referred to as a folded state. 
     Unlike the unfolding state, the folding state may include a plurality of sub-folding states. For example, the folding state may include the plurality of sub-folding states including a fully folding state  370  in which the first surface  311  substantially fully overlaps the second surface  321  by rotation of the hinge structure within the third housing  365 , and the state  350  and the state  360 , both of which correspond to an intermediate folding state between the fully folding state  370  and the unfolding state (e.g., a state  300  of  FIG.  3 A ). For example, the electronic device  101  may provide the state  370  in which the first surface  311  and the second surface  321  face each other by rotation of the hinge structure within the third housing  365 . For example, the electronic device  101  may provide the state  370  in which the first direction  301  is substantially opposite to the second direction  302 . As another example, the state  370  may stand for a state in which the display area of the foldable display is not viewable from the user looking at the electronic device  101 . However, it is not limited thereto. 
     In an embodiment, in relation to charging the battery  150  based on a wireless signal received from the external electronic device  102 , a plurality of states may be defined in the electronic device  101 . For example, a first state of the plurality of states may be a state in which an angle between the first direction  301  and the second direction  302  is within a first range. For example, the first state may include the state  370 . For example, a second state of the plurality of states may be a state in which the angle between the first direction  301  and the second direction  302  is within a second range distinct from the first range. For example, the second state may include the state  300 . 
     For example, various sensors may be used to identify whether the electronic device  101  is either in the first state or in the second state. For example, the processor  110  may identify the angle by means of at least one of a hall sensor in the electronic device  101 , acceleration sensors in the electronic device  101 , or gyro sensors in the electronic device  101 . For example, the hall sensor making up a pair with a magnet in the second housing  320  may be included in the first housing  310 . For example, the hall sensor making up a pair with a magnet in the first housing  310  may be included in the second housing  320 . For example, a first acceleration sensor of the acceleration sensors may be included in the first housing  310 , and a second acceleration sensor of the acceleration sensors may be included in the second housing  320 . For example, a first gyro sensor of the gyro sensors may be included in the first housing  310 , and a second gyro sensor of the gyro sensors may be included in the second housing  320 . However, it is not limited thereto. 
     Unlike the electronic device  101  shown in  FIGS.  2 A and  2 B , the electronic device  101  shown in  FIGS.  3 A and  3 B  may include another display  340  distinct from the foldable display, on a surface of the first housing  320  opposite the first surface  321  of the first housing  310 . 
     In the states of the electronic device  101  illustrated in  FIGS.  2 A to  2 B , the angle between the first housing  210  and the second housing  220  changes with respect to a folding axis  290 , while in the states of the electronic device  101  shown in  FIGS.  3 A to  3 B , the angle between the first housing  310  and the second housing  320  changes with respect to a folding axis  337  substantially perpendicular to the folding axis  290  when the orientation of the electronic device  101  shown in  FIGS.  2 A to  2 B  is substantially the same as the orientation of the electronic device  101  shown in  FIGS.  3 A to  3 B . 
     In an embodiment, the electronic device  101  may be an electronic device including a rollable display. For example, the electronic device  101  may provide various states on the rollable display. 
     For example, referring to  FIG.  4 A , the electronic device  101  may provide, as a state of a plurality of states, a state  410  in which a part of the display area of the display  125  is exposed and a remaining part of the display area  125  is rolled into the housing  400 . The state  410  may be a state in which the display  125  provides a minimum size of viewable area. The state  410  may be a state in which the display  125  provides an exposed display area having a minimum size. The state  410  may be also a state in which there is no more display area of the display  125  to be rolled into the housing due to the limited space formed by the housing  400 . In the state  410 , a part of the exposed display area may be referred to as a first display area  420 . In the state  410 , the remaining part of the display area rolled into the housing  400  may be referred to as a second display area  430 . In the state  410 , the first display area  420  may be a viewable display area. In the state  410 , the first display area  420  may be a display area exposed out of the housing  400 . In the state  410 , the second display area  430  may be of a non-viewable display area due to its rolling into the housing  400 . In the state  410 , the second display area  430  may be a display area covered with the housing  400  due to its rolling into the housing  400 . 
     For another example, referring to  FIG.  4 B , the display  125  may provide a state  450  in which the entire display area of the display  125  is exposed out, as another state of the plurality of states. The state  450  may be a state in which the display  125  provides a maximum size of viewable area. The state  450  may be a state in which the display  125  provides an exposed display area of a maximum size. The state  450  may be a state in which no more display area remains to be extended out of the housing  400 . In the state  450 , both the first display area  420  and the second display area  430  may be of a visible display area. In the state  450 , the first display area  420  and the second display area  430  may be a display area fully exposed out of the housing  400 . 
     Although not shown in  FIGS.  4 A and  4 B , the display  125  may have an intermediate state between the state  410  and the state  450 . The intermediate state may stand for a state in which the first display area  420  and a part of the second display area  430  are exposed and the remaining part of the second display area  430  is rolled into the housing. In the intermediate state, the first display area  420  and the part of the second display area  430  may be a viewable display area. In the intermediate state, the first display area  420  and the part of the second display area  430  may be a display area exposed out of the housing  400 . In the intermediate state, the remaining part of the second display area  430  may be a non-viewable display area due to its rolling into the housing  400 . In the intermediate state, the remaining part of the second display area  430  may be a display area covered with the housing  400  by being rolled into the housing  400 . 
     In an embodiment, in relation to charging the battery  150  based on a wireless signal received from the external electronic device  102 , a plurality of states may be defined in the electronic device  101 . For example, a first state of the plurality of states of the electronic device  101  may be a state in which the size of the display area exposed out of the housing  400  is less than a specified size. For example, the first state may include the state  410 . For example, a second state of the plurality of states of the electronic device  101  may be a state in which the size of the display area exposed out of the housing  400  is equal to or greater than the specified size. For example, the second state may include the state  450 . 
     For example, various sensors may be used to identify whether the electronic device  101  is either in the first state or in the second state. For example, although not shown in  FIGS.  4 A and  4 B , a sensor for identifying a position of an edge of the display  125  rolled into the housing  400  may be used for the processor  110  to identify whether the electronic device  101  is either in the first state or in the second state. 
       FIG.  5 A  is a flowchart illustrating a method of displaying a screen with information to guide an electronic device to be aligned with an external electronic device according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A,  3 B,  4 A and  4 B , or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
       FIG.  5 B  illustrates an example of a screen displayed according to an embodiment. 
     Referring to  FIG.  5 A , in operation  502 , the processor  110  may identify that the electronic device  101  is positioned relative to the external electronic device  102  for charging the battery  150 . For example, the processor  110  may identify that the electronic device  101  is positioned relative to the external electronic device  102 , based on a wireless signal obtained from the external electronic device  102  through a coil  160 . 
     For example, the processor  110  may identify that the electronic device  101  is positioned relative to the external electronic device  102 , further based on establishing connection with the external electronic device  102  via a communication circuitry  130 . For example, the processor  110  may identify a relative location relationship between the electronic device  101  and the external electronic device  102  through the communication circuitry  130 , and identify that the electronic device  101  is positioned relative to the external electronic device  102 , further based on the relative positional relationship. For example, the processor  110  may identify that the electronic device  101  is positioned relative to the external electronic device  102 , further based on data obtained through the sensor  170 . However, it is not limited thereto. 
     In operation  504 , the processor  110  may identify whether the electronic device  101  is properly aligned with the external electronic device  102 , based on the aforementioned identification. For example, when the electronic device  101  is aligned with the external electronic device  102 , it may mean that the electronic device  101  is positioned relative to the external electronic device  102  in an arrangement that a distance between the center of the coil  160  in the electronic device  101  and the center of at least one coil in the external electronic device  102  is within a certain distance (e.g., 1 cm). For example, when the electronic device  101  is properly aligned with the external electronic device  102 , it may mean that the electronic device  101  is positioned relative to the external electronic device  102  in a state in which the power obtained based on a wireless signal for charging the battery  150  from the external electronic device  102  is equal to or more than a predetermined power level. However, it is not limited thereto. 
     In an embodiment, the processor  110  may identify that the electronic device  101  is aligned with the external electronic device  102  through at least one of the communication circuitry  130 , the coil  160 , or the sensor  170 . For example, the processor  110  may identify that the electronic device  101  is aligned with the external electronic device  102 , by executing at least one of the operations defined from the description of  FIG.  5 A , the operations defined from the description of  FIG.  8   , the operations defined from the description of  FIG.  9   , the operations defined from the description of  FIG.  10   , and/or the operations defined from the description of  FIG.  11   . However, it is not limited thereto. 
     In an embodiment, the processor  110  may execute operation  508  on condition that the electronic device  101  is properly aligned with the external electronic device  102 , otherwise execute operation  506 . 
     In the operation  506 , the processor  110  may display a screen including information to guide the electronic device  101  to be aligned with the external electronic device  102 , based on identifying that the electronic device  101  is not fittingly aligned with the external electronic device  102 . For example, the information may include a text guiding the electronic device  101  to be aligned with the external electronic device  102 . For example, the information may include a visual object displayed at a location in a display area of the display  125  corresponding to the location of the coil  160  of the electronic device  101  in order to guide alignment of the coil  160  of the electronic device  101  with the at least one coil of the external electronic device  102 . For example, referring to  FIG.  5 B , the processor  110  may provide a display state  510  on the display  125 , on condition that the electronic device  101  is not aligned with the external electronic device  102 . In the display state  510 , the processor  110  may display a screen  512  including information  511  on the display  125 . For example, the information  511  may include a text  513  to guide a center part of a back of a housing of the electronic device  101  to be aligned with a center part of the external electronic device  102 . For example, the information  511  may include a visual object  514  in an area of the screen  512  corresponding to the area in which the coil  160  of the electronic device  101  is located. For example, the coil  160  may be disposed beneath the area where the visual object  514  is displayed. For example, the processor  110  may display the visual object  514  within an area corresponding to the area in which the coil  160  is located, so that a user of the electronic device  101  can recognize how to change the position or posture of the electronic device  101  or the external electronic device  102 , in order for the user to fittingly align the electronic device  101  with the external electronic device  102 . However, it is not limited thereto. 
     In an embodiment, the screen  512  may be superimposed on another screen displayed via the display  125 . For example, the screen  512  may be superimposed on a home screen (wall paper)  515 . For example, the screen  512  may be superimposed on other screen displayed through the display  125  immediately before displaying the screen  512 , in order to inform that the electronic device  101  is in a state different from the user&#39;s intention to charge the battery  150  of the electronic device  101 . The home screen  515  shown in  FIG.  5 B  may be replaced by a lock screen, an always-on-display (AOD) screen, or an execution screen of an application operating in a foreground state, being displayed through the display  125  immediately before displaying the screen  512 . In an embodiment, the screen  512  may be configured to be translucent in order to intuitively inform the user which screen was being displayed through the display  125  immediately before displaying the screen  512 . For example, the home screen  515  may be viewed through the screen  512 . 
     In an embodiment, displaying on the screen  512  may change over time or based on the occurrence of another event. For example, the processor  110  may control the display  125  to change luminance of the screen  512  from a first luminance to a second luminance higher than the first luminance, on condition that a predetermined time duration has elapsed from the timing of displaying the screen  512  or that another condition has occurred. For example, the processor  110  may control the display  125  to change the size of the text  513  in the screen  512  from a first size to a second size larger than the first size, on condition that a predetermined time duration has elapsed from the timing at which the screen  512  is displayed or that another condition has occurred. For example, the processor  110  may change the color of the text  513  or the visual object  514  in the screen  512 , on condition that a predetermined time duration has elapsed from the timing of displaying the screen  512  or that another condition has occurred. For example, the processor  110  may further display a visual effect around the text  513  or the visual object  514  in the screen  512 , on condition that a predetermined time duration has elapsed from the timing of displaying the screen  512  or that another condition has occurred. For example, the processor  110  may control the display  125  to cause at least one of the text  513  or the visual object  514  in the screen  512  to blink, on condition that a predetermined time duration has elapsed from the timing of displaying the screen  512  or that another condition has occurred. According to embodiments, the processor  110  may output audio signals through a speaker of the electronic device  101  or provide vibrations through an actuator of the electronic device  101  instead of changing displaying of the screen  512 , on condition that a predetermined time duration has elapsed from the timing of displaying the screen  512  or that another condition has occurred. However, it is not limited thereto. 
     In an embodiment, displaying on the screen  512  may be ceased based on a specified condition. 
     For example, the displaying on the screen  512  may be ceased based on identifying that the electronic device  101  is fittingly aligned with the external electronic device  102 . For example, the processor  110  may change the display state  510  to the display state  520  based on identifying that the electronic device  101  is aligned with the external electronic device  102  in the display state  510 . For example, in the display state  520 , the processor  110  may display a screen  522  including information  521  representing that the electronic device  101  is aligned with the external electronic device  102 . In an embodiment, the screen  522  may be superimposed on the home screen  515 . In an embodiment, the processor  110  may switch the display state  520  to a display state  530 , after providing the display state  520  for a specified time duration or based on the occurrence of another event. For example, in the display state  530 , the processor  110  may display a screen  532  including information  531  to guide that charging of the battery  150  is progressing. For example, the information  531  may include at least one of a visual object or a text to indicate a remaining capacity of the battery  150  in charging. In an embodiment, the screen  532  may further include information  533  to indicate a time to be taken for the battery  150  to be fully charged. However, it is not limited thereto. According to embodiments, the processor  110  may switch the display state  510  to the display state  530  without providing the display state  520  in the interim, based on identifying that the electronic device  101  is aligned with the external electronic device  102  in the display state  510 . 
     As another example, displaying on the screen  512  may be ceased based on a user input onto the screen  512 . For example, in response to receiving a user input onto an executable object  516  on the screen  512  in the display state  510 , the processor  110  may cease to display the screen  512  and then display other screen (e.g., the home screen  515 ) disposed beneath the screen  512 . As another example, based on a specified user input received for the screen  512  in the display state  510 , the processor  110  may cease to display the screen  512  and the display the other screen (e.g., the home screen  515 ) positioned beneath the screen  512 . For example, the specified user input may be at least one tap input for any area on the screen  512 . As another example, upon the occurrence of an event (e.g., receiving a message or email), the processor  110  may cease to display the screen  512  and display another screen (e.g., a messaging application or email application, etc.) However, it is not limited thereto. 
     As another example, displaying of the screen  512  may be ceased based on identifying that the electronic device  101  positioned relative to the external electronic device  102  is moved farther away from the external electronic device  102 . For example, based on identifying that the electronic device  101  is moved farther away from the external electronic device  102 , through at least one of the communication circuitry  130 , the coil  160 , or the sensor  170 , the processor  110  may cease to display the screen  512  and then display the other screen (e.g., the home screen  515  positioned beneath the screen  512 ). 
     In operation  508 , the processor  110  may display a screen including information to guide that the battery  150  is in charging, based on identifying that the electronic device  101  is aligned with the external electronic device  102 . For example, referring to  FIG.  5 B , the processor  110  may provide the display state  530 . 
     As described above, on condition that the battery  150  is being not charged or charged at a lower power level than a specified power level, as opposed to the user&#39;s intention to charge the battery  150  of the electronic device  101 , the electronic device  101  may display a screen including information to guide the electronic device  101  to be properly aligned with the external electronic device  102  for charging the battery  150 , thereby enhancing the usability of the electronic device  101 . In an embodiment, the electronic device  101  may change displaying of the information or the screen over time, in order to inform that the electronic device  101  is in a charging state that may be not suitable for the user&#39;s intention. 
       FIG.  6 A  is a flowchart illustrating a method of displaying a screen based on whether an electronic device is in a folding state, according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 C and  3 B  or the processor  110  of the electronic device  101  illustrated in FIG. 
       FIGS.  6 B to  6 D  illustrate examples of a screen displayed either in an unfolding state or in a folding state, according to an embodiment. 
     Referring to  FIG.  6 A , in operation  602 , the processor  110  may receive a wireless signal for charging the battery  150  from the external electronic device  102 . For example, the wireless signal may be received via the coil  160  from at least one coil of the external electronic device  102 . For example, the processor  110  may acquire electric power for charging the battery  150 , using a PMIC  140 , based on the wireless signal received through the coil  160 . For example, the processor  110  may obtain the power provided based on the wireless signal. 
     In operation  604 , the processor  110  may identify whether the power is lower than a designated power. For example, the processor  110  may identify whether the power is less than a designated power, in order to identify whether the electronic device  101  is aligned with the external electronic device  102 . For example, the designated power may be a parameter defined in the electronic device  101  to identify whether the power capable of normally charging the battery  150  is obtained based on the wireless signal. For example, the designated power may be a parameter defined in the electronic device  101  to identify whether the electronic device  101  is aligned with the external electronic device  102  for charging the battery  150 . In an embodiment, the designated power may be of a fixed value. In an embodiment, the designated power may be of a value that may change according to the capability of the electronic device  101 , the state of the electronic device  101 , the capability of the external electronic device  102 , or the state of the external electronic device  102 . When the designated power is of a changeable value, the processor  110  may execute at least one operation for identifying the designated power. An example of the at least one operation will be described later. 
     In an embodiment, the processor  110  may perform operation  606  on condition that the power is less than the designated power, and perform operation  611  on condition that the power is greater than or equal to the designated power. 
     In the operation  606 , the processor  110  may identify whether the state of the electronic device  101  is in either a first state or a second state. For example, the first state may be the first state defined through the description of  FIGS.  2 A and  2 B  (or the description of  FIGS.  3 A and  3 B ), and the second state may be the second state defined through the description of  FIGS.  2 A and  2 B  (or the description of  FIGS.  3 A and  3 B ). For example, since the electronic device  101  in the second state, providing a larger size than the electronic device  101  in the first state, is highly likely to be positioned relative to the external electronic device  102  in an unstable manner, the processor  110  may identify whether the state of the electronic device  101  is the first state or the second state. 
     In an embodiment, the processor  110  may perform operation  608  on condition that the state of the electronic device  101  is the first state, and perform operation  610  on condition that the state of the electronic device  101  is the second state. 
       FIG.  6 A  shows an example of executing the operation  606  after executing the operation  604 , but it is only for convenience of the description. The operations  604  and  606  may be replaced with other similar operations. For example, on condition that the power is less than the designated power and the state of the electronic device  101  is the first state, the processor  110  may execute the operation  608 , and on condition that the power is less than the designated power and the state of the electronic device  101  is the second state, the processor  110  may execute the operation  610 , and further, on condition that the power is equal to or greater than the designated power, the processor  110  may execute the operation  611 . As another example, on condition that the power is less than the designated power while the electronic device  101  is in the first state, the processor  110  may execute the operation  608 , and on condition that the power is less than the designated power while the electronic device  101  is in the second first state, the processor  110  may execute the operation  610 , and further, on condition that the power is equal to or greater than the designated power, the processor  110  may execute the operation  611 . However, it is not limited thereto. 
     In operation the  608 , the processor  110 , based on identifying that the state of the electronic device  101  is the first state, may display a first screen including first information to guide the electronic device  101  to be aligned with the external electronic device  102  for charging the battery  150 . 
     For example, referring to  FIG.  6 B , the processor  110  may provide a display state  612 , based on identifying that the state of the electronic device  101  is the first state defined through the description of  FIGS.  2 A and  2 B . In the display state  612 , the processor  110  may display a first screen  614  including first information  613  to guide the electronic device  101  to be aligned with the external electronic device  102  for charging the battery  150 . For example, the first screen  614  may be displayed through another display (e.g., the other display defined through the description of  FIGS.  2 A and  2 A ) disposed on a surface of the second housing  220  opposite the second surface  221  of the second housing  220 . For example, the other display may be disposed on the surface of the second housing  220  of the first housing  210  including the coil  160  and the second housing  220  not including the coil  160 . For example, the other display may be disposed on the surface of the second housing  220 , unlike the foldable display of the electronic device  101  disposed on the first surface  211  of the first housing  210  and the second surface  221  of the second housing  220 . 
     In an embodiment, in the display state  612 , the first information  613  may include a text  615  to guide a center part of a surface of the first housing  210  opposite the first surface  211  of the first housing  210  to be aligned with the center of the electronic device  102 . For example, the first information  613  may include a visual object  616  within an area of the first screen  614  corresponding to the area in the first housing  210  in which the coil  160  of the electronic device  101  is located. For example, the visual object  616  may at least partially overlap at least part of the coil  160  when the other display is viewed from above. For example, the processor  110  may display the visual object  616  in the area of the first screen  614  corresponding to the area in which the coil  160  is located, so that the user of the electronic device  101  can recognize how to change the position (or posture) of the electronic device  101  or the external electronic device  102  in order to place the electronic device  101  in alignment with the external electronic device  102 . In an embodiment, the first screen  614  may further include an executable object  619  for executing a function of ceasing to display the first screen  614 . However, it is not limited thereto. 
     In an embodiment, the first screen  614  may be superimposed on another screen. For example, the first screen  614  may be superimposed on a lock screen  617 . For example, the first screen  614  may be superimposed on the screen that was displayed through the other display immediately before displaying the first screen  614 , in order to inform that the electronic device  101  is in a state different from the user&#39;s intention to charge the battery  150  of the electronic device  101 . In an embodiment, the first screen  614  may further include a visual object  618  for providing at least part of information in the screen disposed beneath the first screen  614 . For example, the processor  110  may further display in the first screen  614  the visual object  618  for providing information on the local time in the lock screen  617  covered with displaying the first screen  614  as superimposed on the lock screen  617 . However, it is not limited thereto. In an embodiment, at least part of the first screen  614  may be formed to be translucent. For example, the processor  110  may display the first screen  614  translucently, so that the information on the lock screen  617  disposed beneath the first screen  614  can be viewed in the remaining area of the first screen  614  excluding the area displaying the first information  613 . In an embodiment, the first screen  614  may include an opaque area displaying the first information  613  and a translucent remaining area. However, it is not limited thereto. 
     In an embodiment, displaying on the first screen  614  may change over time or based on the occurrence of another event. For example, the processor  110  may increase luminance of the first screen  614  to draw the user&#39;s attention, on condition that a specified time duration has elapsed from the timing of displaying the first screen  614  or based on the occurrence of another event. For example, the processor  110  may increase the size of the text  615  to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  614  or based on the occurrence of another event. For example, the processor  110  may change the color of the text  615  or the visual object  616  to draw the user&#39;s attention further, on condition that a specified time duration has elapsed from the timing of displaying the first screen  614  or based on the occurrence of another event. For example, on condition that a specified time duration has elapsed from the timing of displaying the first screen  614 , the processor  110  may further display a visual effect around the text  615  or the visual object  616  to draw the user&#39;s attention more. For example, the processor  110  may control the other display to cause at least one of the text  615  and the visual object  616  to blink to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  614  or based on the occurrence of another event. According to embodiments, the processor  110  may output audio signals via a speaker of the electronic device  101  or provide vibrations through an actuator of the electronic device  101  to draw the user&#39;s attention, in lieu of changing the displaying on the first screen  614 , on condition that a specified time duration has elapsed from the timing of displaying the first screen  614  or based on the occurrence of another event. However, it is not limited thereto. 
     For another example, referring to  FIG.  6 C , the processor  110 , based on identifying that the state of the electronic device  101  is the first state defined through the description of  FIGS.  3 A and  3 B , may provide a display state  660 . In the display state  660 , the processor  110  may display a first screen  662  including first information  661  to guide the electronic device  101  to be aligned with the external electronic device  102  for charging the battery  150 . For example, the first screen  662  may be displayed through another display (e.g., the other display defined through the description of  FIGS.  3 A and  3 B ) disposed on a surface of the first housing  310  opposite the first surface  311  of the first housing  310 . For example, the other display may be disposed on the surface of the first housing  310  of the first housing  310  not including the coil  160  and the second housing  320  including the coil  160 . For example, the other display may be disposed on the surface of the first housing  310 , as opposed to the foldable display of the electronic device  101  disposed on the first surface  311  of the first housing  310  and the second surface  321  of the second housing  320 . 
     In an embodiment, in the display state  660 , the first information  661  may include a text guiding to check an alignment with the external electronic device  102 . For example, since the size of the other display is smaller than the size of the other display illustrated through the description of  FIG.  6 B , the text in the first information  661  may have more simplified information than the text  615 . For example, since the size of the other display is smaller than the size of the other display illustrated through the description of  FIG.  6 B , the first information  661  may not include a visual object such as the visual object  616 . For example, since the other display does not cover the location where the coil  160  is disposed in the second housing  320 , the first information  661  may not include a visual object such as the visual object  616 . As another example, unlike the illustration of  FIG.  6 C , the first information  661  may include a visual object such as the visual object  616  and may not include any texts. For example, when the coil  160  is included in a position in which the other display is disposed, the visual object in the first information  661  may be displayed at a position corresponding to the position of the coil  160 . For another example, when the coil  160  is not included in the position in which the other display is disposed, the visual object in the first information  661  may be displayed at a position independent of the position of the coil  160 . However, the arrangement is not limited thereto. In an embodiment, the first screen  662  may further include an executable object  663  for executing a function of ceasing to display the first screen  662 . However, it is not limited thereto. 
     In an embodiment, displaying on the first screen  662  may change over time or based on the occurrence of another event. For example, the processor  110  may increase the luminance of the first screen  662  to call the user&#39;s attention, on condition that a specified time duration has elapsed from the timing of displaying the first screen  662  or based on the occurrence of another event. For example, the processor  110  may increase the size of the text in the first information  661  to draw the user&#39;s attention, on condition that a specified time has elapsed from the timing of displaying the first screen  662  or based on the occurrence of another event. For example, the processor  110  may change the color of the text in the first information  661  to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  662  or based on the occurrence of another event. For example, on condition that a specified time duration has elapsed from the timing of displaying the first screen  662  or based on the occurrence of another event, the processor  110  may further display a visual effect around the text in the first information  661  to draw the user&#39;s attention further. For example, the processor  110  may control the other display to cause the text in the first information  661  to blink so as to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  662  or based on the occurrence of another event. According to embodiments, the processor  110  may output audio signals via the speaker of the electronic device  101  or provide vibrations through the actuator of the electronic device  101  to draw the user&#39;s attention more, in lieu of changing displaying on the first screen  662 , on condition that a specified time duration has elapsed from the timing of displaying the first screen  614  or based on the occurrence of another event. However, it is not limited thereto. 
     Referring back to  FIG.  6 A , in operation  610 , the processor  110 , based on identifying that the state of the electronic device  101  is the second state, may display a second screen including the first information and second information guiding to change the state of the electronic device  101  to the first state. For example, since a width of the electronic device in the second state is wider than that of the electronic device in the first state, the stability when the electronic device  101  in the second state is positioned relative to the external electronic device  102  may be lower than the stability when the electronic device  101  in the first state is positioned relative to the external electronic device  102 . For example, the stability in alignment of the electronic device  101  in the second state with the external electronic device  102  is lower than the stability in alignment of the electronic device  101  in the first state with the external electronic device  102 , and therefore, the second screen may further include the second information, unlike the first screen. 
     For example, referring to  FIG.  6 B , the processor  110  may provide a state  620 , based on identifying that the state of the electronic device  101  is the second state defined through the description of  FIGS.  2 A and  2 B . In the display state  620 , the processor  110  may display the second screen  622  further including the second information  621 . For example, unlike the first screen  614 , the second screen  622  may be displayed through the foldable display disposed on the first surface  211  of the first housing  210  and the second surface  221  of the second housing  220 . 
     In an embodiment, the second screen  622  may further include the second information  621 , unlike the first screen  614 . In an embodiment, the second information  621  may include a text guiding to change the state of the electronic device  101  to the first state. Although not shown in  FIG.  6 B , in an embodiment, the second information  621  may further include an image or an animation for guiding to change the state of the electronic device  101  to the first state. 
     In an embodiment, a visual object  616  in the second screen  622  may be displayed in an area adjacent to an edge  623  of the foldable display, unlike the visual object  616  displayed in the center area of the first screen  614 . For example, since the visual object  616  in the second screen  622  is displayed at a position corresponding to the position where the coil  160  is located in the second state, the visual object  616  in the second screen  622  may be displayed in an area adjacent to the edge  623  of the foldable display. 
     In an embodiment, as opposed to the illustration of  FIG.  6 B , the second screen  622  may not include the first information  613 , the text  615  in the first information  613 , or the visual object  616  in the first information  613 . For example, the processor  110  may display the second information  621  instead of displaying the first information  613 , the text  615  in the first information  613 , or the visual object  616  in the first information  613 , within the screen  622  provided in the display state  620 . In an embodiment, the screen  622  may include part of the first information  613 , part of the text  615  in first information  613 , or the visual object  616  in the first information  613 , and the second information  621 . However, it is not limited thereto. 
     In an embodiment, the second screen  622  may be superimposed on another screen, like the first screen  614 . For example, the second screen  622  may be superimposed on a lock screen  617 . For example, the second screen  622  may be superimposed on the screen that was displayed through the other display immediately before displaying the second screen  622 , in order to inform that the electronic device  101  is in a state different from the user&#39;s intention to charge the battery  150  of the electronic device  101 . In an embodiment, the second screen  622  may further include a visual object  618  to provide at least part of information in the screen disposed beneath the second screen  622 . Since the size of the second screen  622  is larger than the size of the first screen  614 , the visual object  618  in the second screen  622  may provide more information than the visual object  618  in the first screen  614 . For example, the visual object  618  in the second screen  622  may include a thumbnail image of a screen disposed beneath the second screen  622 , unlike the visual object  618  in the first screen  614 . For example, the visual object  618  in the second screen  622  may further include at least one executable element  624  for executing at least one function provided through the screen disposed beneath the second screen  622 , unlike the visual object  618  in the first screen  614 . However, it is not limited thereto. 
     In an embodiment, displaying on the second screen  622  may change over time, as in displaying on the first screen  614 . 
     As another example, referring to  FIG.  6 C , the processor  110  may provide a display state  670 , based on identifying that the state of the electronic device  101  is the second state defined through the description of  FIGS.  3 A and  3 B . In the display state  670 , the processor  110  may display a second screen  672  including first information  671  and second information  675 . For example, unlike the first screen  662 , the second screen  672  may be displayed through the foldable display disposed on the first surface  311  of the first housing  310  and the second surface  321  of the second housing  320 . 
     For example, the first information  671  may include a text  673  providing a more detailed description than the text in the first information  661 . For example, the first information  671  may further include a visual object  674 , unlike the first information  661 . For example, the visual object  674  may at least partially overlap at least part of the coil  160 , when the foldable display is viewed from above. 
     For example, the second screen  672  may further include the second information  675 , unlike the first screen  662 . For example, the second screen  672  may further include an executable object  676  like the executable object  663  in the first screen  662 . However, it is not limited thereto. 
     In an embodiment, the second screen  672  may be superimposed on another screen. For example, the second screen  672  may be superimposed on a lock screen  677 . In an embodiment, the second screen  672  superimposed on the other screen (e.g., the lock screen  677 ) may further include a visual object  678  to provide at least some of information in the other screen. For example, the visual object  678  may include information on the local time in the lock screen  677 . However, it is not limited thereto. In an embodiment, the second screen  672  may be configured to be translucent, unlike the first screen  662 . For example, the processor  110  may display the second screen  672  translucently, so that information on the lock screen  677  can be viewed disposed below the second screen  672  in the remaining area in the second screen  672  excepting the area displaying the first information  671  and the second information  675 . In an embodiment, the second screen  672  may include an opaque area displaying the first information  671  and the second information  675 , and a semi-transparent remaining area. However, the arrangement is not limited thereto. 
     In an embodiment, displaying on the second screen  672  may change over time. 
     The visual object  616  and the visual object  674  may further include a visual element to guide the position of at least one coil of the external electronic device  102  or the center of the at least one coil. For example, each of the visual object  616  and the visual object  674  may further include a visual element  690  to indicate the position of the at least one coil or the center of the at least one coil of the external electronic device  102 , as in a display state  691 . For example, the visual element  690  may be displayed at a position identified based on the wireless signal. For example, the visual element  690  may be moved according to a change in the relative location relationship between the electronic device  101  and the external electronic device  102 . For example, when the user changes the position of the electronic device  101  or the position of the external electronic device  102 , the display state  691  may be changed to a display state  693 . In the display state  693 , the visual element  690  may be displayed at the changed position. 
     Although  FIG.  6 A  shows, in the operation  610 , an example of displaying the second screen including the first information and the second information, the processor  110  may display the first information of the first information and the second information in the operation  610 . For example, unlike the operation  608 , the processor  110  may display, in operation  610 , the second information instead of displaying the first information. In an embodiment, the processor  110  may display part of the first information and the second information. However, it is not limited thereto. 
     Referring back to  FIG.  6 A , in operation  611 , the processor  110  may display a third screen including third information to guide that the battery  150  is in charging, based on identifying that the power is equal to or greater than the designated power. In an embodiment, the third screen may further include fourth information, on condition that the state of the electronic device  101  is the second state. For example, the fourth information may be displayed in the third screen to guide a recommendation to change the state of the electronic device  101  to the first state. 
     For example, referring to  FIG.  6 B , the processor  110  may provide a display state  640 , based on identifying that the power is no less than the designated power while the state of the electronic device  101  is the first state defined through the description of  FIGS.  2 A and  2 B . For example, in the display state  640 , the processor  110  may display a third screen  642  including third information  641  to guide that the battery  150  is in charging. For example, the third information  641  may include at least one of a visual object or a text for indicating the remaining amount of the battery  150  in charging. In an embodiment, the third screen  642  may further include information  643  indicating a time to be taken until the battery  150  is fully charged. However, it is not limited thereto. In an embodiment, the third screen  642  may disappear after being displayed for a specified time duration. 
     For another example, the processor  110  may provide a display state  650  based on identifying that the power is greater than or equal to the designated power while the state of the electronic device  101  is the second state defined through the description of  FIGS.  2 A and  2 B . For example, in the display state  650 , the processor  110  may display a third screen  652  including fourth information  651  as well as the third information  641 . For example, since the electronic device  101  in the second state is positioned relative to the external electronic device  102  in a more unstable state than the electronic device  101  in the first state, the third screen  652  may further include the fourth include information  651 . For example, the fourth information  651  may include a text to guide a recommendation to change the state of the electronic device  101  to the first state. For example, the third screen  652  may further include information  653  to indicate the time to be taken until the battery  150  is fully charged, like the information  643  in the third screen  642 . However, it is not limited thereto. In an embodiment, the third screen  652  may disappear after being displayed for a specified time duration. 
     For another example, referring to  FIG.  6 C , the processor  110  may provide a display state  680  based on identifying that the power is greater than or equal to the designated power while the state of the electronic device  101  is the second state defined through the description of  FIGS.  3 A and  3 B . For example, in the display state  680 , the processor  110  may display the third screen  682  including the third information  681 . For example, the third information  681  may include at least one of a visual object or a text for indicating a remaining amount of the battery  150  in charging. Although not shown in  FIG.  6 C , the third screen  682  may further include information to indicate a time to be taken until the battery  150  is fully charged. However, it is not limited thereto. In an embodiment, the third screen  682  may disappear after being displayed for a specified time duration. 
     For another example, the processor  110  may provide a display state  683  based on identifying that the power is greater than or equal to the designated power while the state of the electronic device  101  is the second state defined through the description of  FIGS.  3 A and  3 B . For example, in the display state  683 , the processor  110  may display a third screen  685  including fourth information  684  as well as the third information  681 . For example, the electronic device  101  in the second state is positioned relative to the external electronic device  102  in a more unstable state than the electronic device  101  in the first state, and therefore, the third screen  685  may further include the fourth information  684 . For example, the fourth information  684  may include a text to guide a recommendation to change the state of the electronic device  101  to the first state. For example, the third screen  685  may further include information  686  indicating a time to be taken until the battery  150  is fully charged. However, it is not limited thereto. In an embodiment, the third screen  685  may disappear after being displayed for a specified time duration. 
     As described above, the electronic device  101  can adaptively display a screen according to the state of the electronic device  101 . For example, the electronic device  101  can provide different screens according to whether the state of the electronic device  101  is either the first state or the second state, on condition that the electric power is less than a designated power level, thereby preventing charging of the battery  150  from being not effected or abnormally performed owing to possible misalignment in between the electronic device  101  and the external electronic device  102 . 
       FIG.  7 A  is a flowchart illustrating a method of switching the screen according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A and  3 B  or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
       FIG.  7 B  illustrates examples of a screen switched in an unfolding state or a folding state, according to an embodiment. 
       FIG.  7 C  illustrates an example of providing a notification through a wearable electronic device when it is maintained the state that the power is less than a designated power, according to an embodiment. 
     Referring to  FIG.  7 A , in operation  702 , the processor  110  may identify whether the power provided based on the wireless signal is greater than or equal to a designated power, based on displaying the first screen or the second screen defined through the description of  FIGS.  6 A to  6 D . For example, the processor  110  may identify whether or not the power is greater than or equal to the designated power, in order to identify whether the power for charging the battery  150  is changed from a first power less than the designated power to a second power greater than or equal to the designated power. In an embodiment, the processor  110  may execute operation  704  on condition that the power obtained from the external electronic device  102  is equal to or greater than the designated power after displaying the first screen or the second screen, or execute operation  708  on condition that the power is less than the designated power after a specified time duration has elapsed from the timing of displaying the first screen or the second screen. 
     In operation  704 , the processor  110  may switch the first screen or the second screen to a fourth screen including fourth information to guide the electronic device  101  to be in alignment with the external electronic device  102 , based on identifying that the power is equal to or greater than the designated power. For example, the fourth information may be displayed in the fourth screen to indicate that charging of the battery  150  is to be carried out with the arrangement. For example, referring to  FIG.  7 B , on condition that the power is equal to or greater than the designated power, the processor  110  may change the display state  612  displaying the first screen  614  to the display state  710  or change the display state  620  displaying the second screen  622  to the display state  720 . For example, when the user adjusts the position of the electronic device  101  in the first state positioned relative to the external electronic device  102  for alignment in between the electronic device  101  and the external electronic device  102 , the processor  110  may change the display state  612  to the display state  710 . As another example, when the user switches the state of the electronic device  101  positioned relative to the external electronic device  102  from the second state to the first state and causes the electronic device  101  in the switched first state to align with the external electronic device  102 , the processor  110  may change the display state  620  to the display state  720 . However, it is not limited thereto. 
     For example, in the display state  710 , the processor  110  may display a fourth screen  712  including fourth information  711  to guide that the electronic device  101  is aligned with the external electronic device  102 . For example, the fourth screen  712  may be displayed through the other display. For example, the fourth information  711  in the fourth screen  712  may include a visual object. For example, the visual object may be displayed at a position corresponding to the position of the coil  160 . For example, the visual object may have a shape in which part of the shape of the visual object  616  is changed. For example, the visual object may have a shape in which part of the shape of the visual object  616  is changed, in order to indicate that the alignment state in between the electronic device  101  and the external electronic device  102  in relation to charging of the battery  150  is changed from a misaligned arrangement to an aligned arrangement. However, it is not limited thereto. 
     In an embodiment, although not shown in  FIG.  7 A , the processor  110  may change the display state  620  to the display state  720 , on condition that the electronic device  101  in the second state is aligned with the external electronic device  102 . For example, in the display state  720 , the processor  110  may display a fifth screen  721  including fourth information  711  to guide that the electronic device  101  is aligned with the external electronic device  102  and fifth information  722  to guide to change the state of the electronic device  101  to the first state. For example, a difference between the size of the electronic device  101  in the second state and the size of the external electronic device  102  is larger than a difference between the size of the electronic device  101  in the first state and the size of the external electronic device  102 , and therefore, the alignment of the electronic device  101  in the second state and the external electronic device  102  may be more easily broken by an external force or impact than the alignment of the electronic device  101  in the first state and the external electronic device  102 . Since the stability in alignment of the electronic device  101  in the first state and the external electronic device  102  is higher than the stability in alignment of the electronic device  101  in the second state and the external electronic device  102 , the processor  110  may display the fifth screen  721  further including the fifth information  722  to guide to change to the first state. 
     In an embodiment, the fourth information  711  may be displayed at a position corresponding to the displayed position of the visual object  616  in the display state  620 , unlike the illustration of  FIG.  7 B  displaying the fourth information  711  in the center area of the other display. However, it is not limited thereto. 
     Referring back to  FIG.  7 A , in operation  706 , the processor  110  may switch the fourth screen to the third screen, after displaying the fourth screen for a specified time duration or after some other condition occurs. For example, the processor  110  may change the fourth screen to the third screen. For example, the third screen may be the third screen defined through the description of the operation  611  in  FIG.  6 A . For example, referring to  FIG.  7 B , the processor  110  may change the display state  710  to the display state  640 , based on identifying that the specified time duration has elapsed from the timing of providing the display state  710 . 
     Although not shown in  FIG.  7 A , in an embodiment, the processor  110  may change the display state  720  to the display state  640 , on condition that the state of the electronic device  101  is changed to the first state while providing the display state  720 . 
     Although not shown in  FIG.  7 A , in an embodiment, the processor  110  may change the display state  720  to the display state  650 , based on identifying that the specified time duration has elapsed from the timing of providing the display state  720  and the second state is maintained. 
     Referring back to  FIG.  7 A , in operation  708 , the processor  110  may execute at least one operation, based on identifying that after a lapse of the specified time duration from the timing of displaying the first screen or the second screen the power is maintained in a level less than the designated power. 
     In an embodiment, the processor  110  may execute the at least one operation by changing displaying of the first screen or the second screen, based on identifying that after a lapse of the specified time duration from the timing of displaying the first screen or the second screen the power is maintained in a level less than the designated power. For example, changing displaying of the first screen or the second screen may be executed by the operations exemplified through the descriptions of  FIGS.  5 A and  5 B and  6 A,  6 B,  6 C and  6 D . 
     In an embodiment, the processor  110 , based on identifying that after a lapse of the specified time duration from the timing of displaying the first screen or the second screen the power is maintained in a level less than the designated power, may execute the at least one operation by providing a preset notification using another output device distinct from at least one display (e.g., a display  125 ) of the electronic device  101 . For example, the processor  110  may provide the preset notification by outputting audio signals through a speaker of the electronic device  101 . In an embodiment, the audio signals are generated by a device communicatively connected or otherwise associated with the electronic device  101 , such as a wearable device (e.g., headphones, a smart watch), a speaker, another electronic device, or the like. In an embodiment, the audio signals may be output based on a direction in which the electronic device  101  positioned relative the external electronic device  102  is moved for alignment of the electronic device  101  with the external electronic device  102 . For example, when the direction in which the electronic device  101  is to be moved is a first direction and the electronic device  101  includes a plurality of speakers, the processor  110  may identify at least one speaker of the plurality of speakers, disposed at a position corresponding to the first direction, and then output the audio signals through the at least one speaker. As another example, the processor  110  may provide the preset notification by providing vibrations or bounce through an actuator of the electronic device  101 . In an embodiment, the vibrations may be provided in a direction in which the electronic device  101  positioned relative to the external electronic device  102  is moved to align the electronic device  101  with the external electronic device  102 . For example, when the direction in which the electronic device  101  is to be moved is the first direction, the processor  110  may identify at least one actuator that can provide vibrations in the first direction, among a plurality of actuators included in the electronic device  101 , and then provide the vibrations through the at least one actuator. 
     In an embodiment, the processor  110 , based on identifying that the power is maintained below the designated power after the specified time duration has elapsed from the timing of displaying the first screen or the second screen, may execute the at least one operation by transmitting to another electronic device a signal for providing a preset notification via other electronic device, through the communication circuitry  130 . For example, the other electronic device may be the external electronic device  102  or another external electronic device that cooperates with or is connected to the electronic device  101 . In an embodiment, the other electronic device may be a wearable device connected to the electronic device  101  such as, e.g., a smart watch, earbuds, AR glasses or the like. 
     For example, referring to  FIG.  7 C , the processor  110 , based on identifying that the power is maintained below the designated power after the specified time duration has elapsed from the timing of displaying the first screen or the second screen, may transmit the signal through the communication circuitry  130  to a wearable device  777  (e.g., a smart watch) connected to the electronic device  101  and worn by the user of the electronic device  101 . For example, the signal may cause the wearable device  777  to display a screen  780  including at least one of the first information or the second information through a display of the wearable device  777 . For example, the signal may cause the wearable device  777  to output preset audio signals  781  through a speaker of the wearable device  777 . For example, the signal may cause the wearable device  777  to provide preset vibrations  782  through an actuator of the wearable device  777 . 
     As another example, the processor  110 , based on identifying that the power is maintained below the designated power after the specified time duration has elapsed from the timing of displaying the second screen, may transmit the signal to the wearable device  778  (e.g., an earbud) worn by the user of the electronic device  101 , through the communication circuitry  130 . For example, the signal may cause the wearable device  778  to output preset audio signals  783  through a speaker of the wearable device  778 . For example, the preset audio signals  783  may include voice signals, unlike the preset audio signals  781 . For example, the voice signals may provide vocal content to guide the electronic device  101  to be aligned with the external electronic device  102  for charging the battery  150 . However, it is not limited thereto. 
     As described above, the electronic device  101  can provide such a notification using various schemes after a lapse of a specified time duration from the timing of displaying the first screen or the second screen or based on another condition occurring, so that the user can easily recognize that the charging of the battery  150  is abnormally performed or substantially not performed, as opposed to the user&#39;s intention. 
       FIG.  8    is a flowchart illustrating a method of wirelessly obtaining the electric power according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A,  3 B,  4 A and  4 B  or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
     Operations  802  to  808  of  FIG.  8    may be associated with the operation  602 . 
     Referring to  FIG.  8   , in operation  802 , the processor  110  may receive a first wireless signal from the external electronic device  102  through the coil  160 . For example, the first wireless signal may be a signal distinct from the wireless signal received in the operation  602  of  FIG.  6 A . For example, the first wireless signal may be a signal transmitted from the external electronic device  102  to identify whether the electronic device  101  positioned relative to the external electronic device  102  requires charging of the power. For example, the external electronic device  102  may transmit the first wireless signal, in order to identify that an object comes into contact with at least a part of a housing of the external electronic device  102 , and based on the identification, identify whether the object brought into contact with the part is a device requiring charging of the power like the electronic device  101  or any other foreign matter. For example, the external electronic device  102  may identify that the object is in contact with the at least a part of the housing of the external electronic device  102 , based on a change in capacitance caused to the at least a part of the housing of the external electronic device  102 . For another example, the external electronic device  102  may identify that the object is in contact with the at least a part of the housing of the external electronic device  102 , based on a signal received through an NFC circuitry or a UWB communication circuitry of the external electronic device  102 . However, it is not limited thereto. 
     In operation  804 , in response to receiving the first wireless signal, the processor  110  may transmit a response signal to the first wireless signal to the external electronic device  102  through the coil  160 . For example, the processor  110  may obtain the response signal based on load modulation, and then transmit the obtained response signal to the external electronic device  102  through the coil  160 . For example, the response signal may be transmitted from the electronic device  101  to the external electronic device  102  to indicate that the electronic device  101  is to obtain the power wirelessly from the external electronic device  102 . 
     In operation  806 , after transmitting the response signal, the processor  110  may transmit identification information of the electronic device  101  and/or configuration information including information indicating the maximum amount of power that the electronic device  101  can obtain or process, to the external electronic device  102  through the coil  160 . Based on receiving the response signal within a specified time duration from the timing of transmitting the first wireless signal or some other condition being satisfied, the external electronic device  102  may identify that the object in contact with the at least a part of the housing of the external electronic device  102  is a device requesting charging of the battery, and based on the identification, receive the configuration information from the electronic device  101 . 
     In an embodiment, the designated power defined through the description of the operation  604  of  FIG.  6 A  may be identified based on the configuration information. For example, the designated power may be identified based on the maximum amount of power that the electronic device  101  can obtain or process. For example, the designated power may be identified based on a requested amount of power that the electronic device  101  requests from the external electronic device  102 . 
     The designated power may be identified based on another criterion distinct from the configuration information. In an embodiment, the designated power may be identified based on the remaining amount of the battery  150 . For example, on condition that the remaining amount of the battery  150  is of a first value, the processor  110  may identify the designated power as a first power value, and on condition that the remaining amount of the battery  150  is of a second value lower than the first value, the processor  110  may identify the designated power as a second power value lower than the first power value. 
     In an embodiment, the designated power may be identified based on a place where the electronic device  101  is located. For example, when the electronic device  101  is connected to a head unit in a vehicle through a Bluetooth communication circuitry, the processor  110  may identify data on the charging history in the vehicle, identify the power that can be wirelessly obtained from the external electronic device  102  located in the vehicle based on the data, and then identify the designated power based on the identified power. However, it is not limited thereto. 
     In an embodiment, the designated power may be identified based on time of day. For example, the processor  110  may store information on the charging history of the battery  150  whenever the battery  150  is charged, and identify the designated power based on the power obtained in hours when charging of the battery  150  occurs most frequently from the stored information. However, it is not limited thereto. 
     In an embodiment, the designated power may be identified based on a health condition of the battery  150 . 
     In operation  808 , the processor  110  may receive a second wireless signal from the external electronic device  102  through the coil  160 . For example, the second wireless signal may be the wireless signal defined through the description of the operation  602 . For example, the second wireless signal may be transmitted from the external electronic device  102  to the electronic device  101  until a transmission complete packet is received from the electronic device  101 . For example, the transmission complete packet may be transmitted from the electronic device  101  to the external electronic device  102  based on identifying that the charging of the battery  150  is complete. 
     As described above, the electronic device  101  can obtain the power wirelessly from the external electronic device  102  by exchanging signals or information with the external electronic device  102  through the coil  160 . In an embodiment, the electronic device  101  may identify the designated power used in the operation  604  of  FIG.  6 A , based on exchanging the signals or the information with the external electronic device  102 . Since the designated power is used to define a condition to display the first screen, the second screen, or the third screen, the electronic device  101  can provide a screen (e.g., the first screen, the second screen, or the third screen) that is suitable for its situation. 
       FIG.  9    is a flowchart illustrating a method of identifying a relative location relationship between an electronic device and an external electronic device through a UWB communication circuitry according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A,  3 B,  4 A and  4 B  or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
     Operations  902  to  908  of  FIG.  9    may be related to the operations  604 ,  608 , and  610  of  FIG.  6 A . 
     Referring to  FIG.  9   , in operation  902 , the processor  110  may emit a first signal through a UWB communication circuitry (e.g., a communication circuitry  130 ). In an embodiment, the processor  110 , based on the wireless signal received in the operation  602  of  FIG.  6 A  or the first wireless signal received in the operation  802  of  FIG.  8   , may emit the first signal through the UWB communication circuitry. In an embodiment, the processor  110  may identify a time slot in which charging of the battery  150  has been frequently performed based on the information on the charging history stored in the electronic device  101 , and then emit the first signal based on the identified time slot. In an embodiment, the processor  110  may emit the first signal based on establishing connection with another electronic device. For example, the other electronic device may be the external electronic device  102  or another external electronic device distinct from the external electronic device  102 . 
     In operation  904 , the processor  110  may receive a second signal in which at least part of the first signal has been reflected by the external electronic device  102 , through the UWB communication circuitry. 
     In operation  906 , the processor  110  may identify a relative location relationship between the electronic device  101  and the external electronic device  102  based on the first signal and the second signal. For example, the processor  110  may identify the relative location relationship based on at least one of the transmission timing of the first signal, the reception timing of the second signal, the transmission strength of the first signal, the reception strength of the second signal, or angle of arrival (AoA) of the second signal. For example, the processor  110  may transmit the first signal via a first antenna and a second antenna connected to the UWB communication circuitry, receive the second signal via the first antenna and the second antenna, and identify AoA of the second signal, based on a phase difference between the second signal received through the first antenna and the second signal received through the second antenna. However, the arrangement is not limited thereto. 
     In operation  908 , the processor  110  may display the first screen or the second screen based on the relative positional relationship. In an embodiment, the processor  110  may use only the relative location relationship without identifying whether the power is less than the designated power as in operation  604 , to identify that the charging of the battery  150  is abnormally performed or substantially not performed, and based on the identification, display the first screen or the second screen. In an embodiment, the processor  110  may display the first screen or the second screen, based on identifying the relative location relationship together with identifying whether the power is less than the designated power, as in operation  604 . 
     As described above, based on the first signal transmitted through the UWB communication circuitry and the second signal received through the UWB communication circuitry, the electronic device  101  can identify the relative location relationship between the electronic device  101  and the external electronic device  102  and identify the charging state of the battery  150  based on the identified relative positional relationship, thereby enhancing the function of charging the battery  150 . 
       FIG.  10    is a flowchart illustrating a method of identifying a relative location relationship between an electronic device and an external electronic device through an NFC communication circuitry according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A,  3 B,  4 A and  4 B  or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
     Operations  1002  and  1004  of  FIG.  10    may be associated with the operations  604 ,  608 , and  610  of  FIG.  6 A . 
     Referring to  FIG.  10   , in operation  1002 , the processor  110  may identify a relative location relationship between the electronic device  101  and the external electronic device  102  based on at least one signal transmitted or received through the NFC circuitry. In an embodiment, the processor  110  may transmit a signal through the NFC circuitry based on the wireless signal received in the operation  602  of  FIG.  6 A  or the wireless signal received in the operation  802  of  FIG.  8   , and receive a response signal to the signal from the external electronic device  102 . For example, the processor  110  may identify the relative location relationship between the electronic device  101  and the external electronic device  102  based on the reception strength of the response signal. 
     In operation  1004 , the processor  110  may display the first screen or the second screen based on the relative positional relationship. In an embodiment, the processor  110  may identify that the charging of the battery  150  is abnormally performed or substantially not performed, by only using the relative location relationship without identifying whether the power is less than the designated power as in operation  604 , and display the first screen or the second screen based on the identification. In an embodiment, the processor  110  may display the first screen or the second screen, based on identifying the relative location relationship together with identifying whether the power is less than the designated power as in operation  604 . 
     As described above, the electronic device  101  can identify the relative location relationship between the electronic device  101  and the external electronic device  102  based on the at least one signal transmitted or received through the NFC circuitry, and identify the state of charging of the battery  150  based on the identified relative positional relationship, thereby enhancing the function of charging the battery  150 . 
       FIG.  11    is a flowchart illustrating a method of identifying a relative location relationship between an electronic device and an external electronic device through at least one second coil, according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A,  3 B,  4 A and  4 B  or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
     Operations  1102  to  1106  of  FIG.  11    may be associated with the operations  604 ,  608 , and  610  of  FIG.  6 A . 
     Referring to  FIG.  11   , in operation  1102 , while receiving the wireless signal defined through the description of the operation  602  of  FIG.  6 A , through at least one first coil of the electronic device  101 , the processor  110  may receive the wireless signal through at least one second coil of the electronic device  101 , or receive another wireless signal distinct from the wireless signal through the at least one second coil. For example, the coil  160  may include the at least one first coil and the at least one second coil. For example, the at least one first coil may be used to obtain the power for charging the battery  150 , and the at least one second coil may be used to identify whether the electronic device  101  is aligned with the external electronic device  102 . For example, the other wireless signal may be used to identify whether the electronic device  101  is aligned with the external electronic device  102 , unlike the wireless signal used to charge the battery  150 . In an embodiment, the at least one second coil may be disposed at another position distinct from the position at which the at least one first coil is disposed. In an embodiment, the at least one second coil may be electrically separated from the at least one first coil. However, it is not limited thereto. 
     In operation  1104 , the processor  110 , based on the wireless signal received through the at least one second coil or the other wireless signal received through the at least one second coil, may identify the relative location relationship between the electronic device  101  and the external electronic device  102 . For example, based on the reception strength of the wireless signal received through the at least one second coil or the reception strength of the other wireless signal received through the at least one second coil, the processor  110  may identify the relative positional relationship. However, it is not limited thereto. 
     In operation  1106 , the processor  110  may display the first screen or the second screen based on the relative positional relationship. In an embodiment, the processor  110  may identify that the charging of the battery  150  is abnormally performed or substantially not performed, by only using the relative location relationship without identifying whether the power is less than the designated power as in operation  604 , and then display the first screen or the second screen based on the identification. In an embodiment, the processor  110  may display the first screen or the second screen, based on identifying the relative location relationship together with identifying whether the power is less than the designated power as in operation  604 . 
     As described above, the electronic device  101  can identify the relative location relationship between the electronic device  101  and the external electronic device  102 , based on the wireless signal or the other wireless signal received through the at least one second coil distinct from the at least one first coil used for charging the battery  150 , and identify the state of charging of the battery  150  based on the identified relative positional relationship, thereby enhancing the function of charging the battery  150 . 
       FIG.  12 A  is a flowchart illustrating a method of providing a notification when a surface of a housing of an electronic device including a display comes into contact with an external electronic device, according to an embodiment. This method may be executed by the electronic device  101  illustrated in  FIGS.  1 A,  1 B,  1 C,  2 A,  2 B,  3 A and  3 B  or the processor  110  of the electronic device  101  illustrated in  FIG.  1 C . 
       FIG.  12 B  illustrates an example of a notification provided when a surface of a housing of an electronic device including a display is brought into contact with an external electronic device, according to an embodiment. 
     Referring to  FIG.  12 A , in operation  1202 , the processor  110  may detect that the power obtained based on the wireless signal received from the external electronic device  102  through the coil  160  is less than the designated power. For example, the processor  110 , based on detecting that the power is less than the designated power, may identify that the electronic device  101  positioned relative to the external electronic device  102  for charging the battery  150  is not properly aligned with the external electronic device. 
     In operation  1204 , based on the detection, the processor  110  may identify whether there is a display exposed toward the outside of at least one display of the electronic device  101  positioned relative to the external electronic device  102 . For example, the processor  110  may identify whether there is a display exposed to the outside, for identifying a method to inform that the electronic device  101  positioned relative to the external electronic device  102  for charging the battery  150  is not properly aligned with the external electronic device  102 . 
     In an embodiment, the processor  110  may identify a posture of the electronic device  101  positioned relative to the external electronic device  102  based on the detection, and identify whether there is a display exposed toward the outside, based on identifying whether the posture is a posture having a display exposed toward the outside of the at least one display of the electronic device  101 . 
     In an embodiment, the processor  110  may obtain sensed values through a touch sensor in the at least one display of the electronic device  101  based on the detection, and identify whether there is a display exposed toward the outside based on the sensed values. 
     The processor  110  may execute operation  1206  on a condition that there is a display exposed to the outside, and execute operation  1208  on a condition that there is no display exposed to the outside. 
     In the operation  1206 , the processor  110  may display the first screen or the second screen based on identifying that there is a display exposed to the outside. 
     In the operation  1208 , the processor  110 , based on identifying that there is no display exposed to the outside, may provide a notification to guide that the electronic device  101  is abnormally positioned relative to the external electronic device  102 . For example, when no display exists exposed to the outside, it means that there is no display in a state of being viewed by the user, and therefore, the notification may be provided by means of at least one of audio signals, vibrations, or blinking. For example, referring to  FIG.  12 B , the processor  110  may provide such a notification by displaying a visual effect  1230  along at least one of the sides of the display in contact with the external electronic device  102  without being exposed to the outside, on condition that there is no display exposed toward the outside. In an embodiment, the visual effect may include blinking to draw the user&#39;s attention more. In an embodiment, the visual effect may be provided with a brightness greater than or equal to a predetermined brightness. For example, the brightness may change depending on the illuminance around the electronic device  101 . However, the configuration is not limited thereto. 
     As another example, the processor  110  may output audio signals  1235  via a speaker of the electronic device  101 , on condition that there is no display exposed toward the outside. In an embodiment, when the electronic device  101  has a plurality of speakers, the processor  110  may obtain voice signals through microphones of the electronic device  101  while outputting the audio signals  1235 , identify a location of a user based on the strength of the voice signals obtained through each of the microphones, and output audio signals through at least one speaker disposed at a location corresponding to the identified location of the plurality of speakers. However, it is not limited thereto. 
     As another example, the processor  110  may output vibrations through an actuator of the electronic device  101  on condition that there is no display exposed to the outside. In an embodiment, to draw the user&#39;s attention more, the intensity of the vibrations may be increased over time. However, it is not limited thereto. 
       FIG.  12 A  shows an example of executing the operation  1204  based on detecting that the power is less than the designated power, but the conditions for executing that operation  1204  may be defined in various ways. For example, the processor  110  may identify the relative location relationship between the electronic device  101  and the external electronic device  102  based on the operations exemplified through the descriptions of  FIGS.  9  to  11   , and then execute the operation  1204  based on the relative positional relationship. 
     As described above, when there is no display exposed toward the outside, the electronic device  101  may provide a notification in lieu of displaying the first screen or the second screen. Therefore, the electronic device  101  can intuitively communicate that the state of charging of the battery  150  is not in good order, thanks to providing such a notification. 
       FIG.  13 A  is a flowchart illustrating a method of displaying a screen based on a state of an electronic device including a rollable display, according to an embodiment. This method may be executed by the electronic device  101  shown in  FIGS.  1 A,  1 B,  1 C,  4 A, and  4 B  or the processor  110  of the electronic device  101  shown in  FIG.  1 C . 
       FIG.  13 B  illustrates examples of a screen displayed through a rollable display exposed toward the outside, according to an embodiment. 
     Referring to  FIG.  13 A , in operation  1302 , the processor  110  may receive a wireless signal for charging the battery  150  from the external electronic device  102 . For example, the wireless signal may be received from at least one coil of the external electronic device  102  through the coil  160 . For example, the processor  110  may obtain the power for charging the battery  150  using a PMIC  140 , based on the wireless signal received through the coil  160 . For example, the processor  110  may obtain the power provided based on the wireless signal. 
     In operation  1304 , the processor  110  may identify whether the power is less than a designated power. For example, the processor  110  may identify whether the power is less than the designated power in order to identify whether the electronic device  101  is aligned with the external electronic device  102 . For example, the designated power may be a parameter defined in the electronic device  101  to identify whether the power capable of normally charging the battery  150  is obtained based on the wireless signal. For example, the designated power may be a parameter defined in the electronic device  101  to identify whether the electronic device  101  is aligned with the external electronic device  102  for charging the battery  150 . In an embodiment, the designated power may be of a fixed value. In an embodiment, the designated power may be of a value capable of changing according to at least one of the capability of the electronic device  101 , the state of the electronic device  101 , the capability of the external electronic device  102 , or the state of the external electronic device  102 . 
     In an embodiment, the processor  110  may execute operation  1306  on condition that the power is less than the designated power, and perform operation  1311  on condition that the power is greater than or equal to the designated power. 
     In the operation  1306 , the processor  110 , based on identifying that the power is less than the designated power, may identify whether the electronic device  101  is in a first state in which a first display area of the display  125  is exposed and a second display area of the display  125  adjacent to the first display area is rolled into a housing  400 , or it is in a second state in which both the first display area and the second display area are exposed. For example, the first state may be the first state defined through the description of  FIGS.  4 A and  4 B , and the second state may be the second state defined through the description of  FIGS.  4 A and  4 B . For example, since the electronic device  101  in the second state providing a larger size than the electronic device  101  in the first state is more likely to be unstably mounted on or positioned relative to the external electronic device  102 , the processor  110  may identify whether the state of the electronic device  101  is the first state or the second state. In an embodiment, the processor  110  may execute operation  1308  on condition that the electronic device  101  is in the first state, and execute operation  1310  on condition that the electronic device  101  is in the second state. 
       FIG.  13 A  shows an example of executing the operation  1306  after executing the operation  1304 , but it is only for convenience of description. The operations  1304  and  1306  may be replaced with other similar operations, respectively. For example, on condition that the power is less than the designated power and the electronic device  101  is in the first state, the processor  110  may execute the operation  1308 , and on condition that the power is less than the designated power and the electronic device  101  is in the second state, the processor  110  may execute the operation  1310 , and further, on condition that the power is equal to or greater than the designated power, the processor  110  may execute operation  1311 . As another example, the processor  110  may execute the operation  1308  on condition that the power is less than the designated power while the electronic device  101  is in the first state, the processor  110  may execute the operation  1310  on condition that the power is less than the designated power while the electronic device  101  is in the second state, then the processor  110  may execute the operation  1311  on condition that the power is equal to or greater than the designated power. However, it is not limited thereto. 
     In operation  1308 , the processor  110  may display a first screen including first information to guide the electronic device  101  to be aligned with the external electronic device  102  for charging the battery  150 , based on identifying that the electronic device  101  is in the first state. 
     For example, referring to  FIG.  13 B , the processor  110  may provide a state  1312  based on identifying that the state of the electronic device  101  is the first state defined through the description of  FIGS.  4 A and  4 B . In the display state  1312 , the processor  110  may display a first screen  1314  including first information  1313  to guide the electronic device  101  to be aligned with the external electronic device  102  for charging the battery  150 . For example, the first screen  1314  may be displayed in the first display area of the display  125  exposed out of the housing  400 . 
     In an embodiment, in the display state  1312 , the first information  1313  may include a text  1315  to guide a center part of a surface of the housing  400  to be aligned with a center part of the external electronic device  102 . For example, the first information  1313  may include a visual object  1316  in an area of the first screen  1314  corresponding to the area in the housing  400  in which the coil  160  of the electronic device  101  is located. For example, the visual object  1316  may at least partially overlap at least part of the coil  160  when the display  125  is viewed from above. For example, the processor  110  may display the visual object  1316  in an area of the first screen  1314  corresponding to the area in which the coil  160  is located, so that the user of the electronic device  101  can recognize how to change the position (or posture) of the electronic device  101  or the external electronic device  102  to align the electronic device  101  with the external electronic device  102 . In an embodiment, the first screen  1314  may further include an executable object  1319  for executing a function of ceasing to display the first screen  1314 . However, it is not limited thereto. 
     In an embodiment, the first screen  1314  may be superimposed on another screen. For example, the first screen  1314  may be superimposed on a lock screen  1317 . For example, the first screen  1314  may be superimposed on the screen displayed through the display  125  immediately before displaying the first screen  1314 , in order to inform that the electronic device  101  is in a state different from the user&#39;s intention to charge the battery  150  of the electronic device  101 . In an embodiment, the first screen  1314  may further include a visual object  618  for providing at least part of information in the screen disposed beneath the first screen  1314 . For example, the processor  110  may further display in the first screen  614  a visual object  1318  for providing information on the local time within a lock screen  617  covered with displaying the first screen  614  as superimposed on the lock screen  617 . However, it is not limited thereto. In an embodiment, at least part of the first screen  1314  may be formed to be translucent. For example, the processor  110  may display the first screen  1314  semi-transparently so that the user can view the information of the lock screen  1317  disposed below the first screen  1314  in the remaining area of the first screen  1314  excluding the area displaying the first information  1313 . In an embodiment, the first screen  1314  may include an opaque area displaying the first information  1313  and a semi-transparent remaining area. However, it is not limited thereto. 
     In an embodiment, displaying on the first screen  1314  may change over time or responsive to another condition being satisfied. For example, the processor  110  may increase the luminance of the first screen  1314  to draw the user&#39;s attention, on condition that a specified time duration has elapsed from the timing of displaying the first screen  1314  or responsive to the occurrence of another condition. For example, the processor  110  may increase the size of a text  1315  in order to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  1314  or responsive to the occurrence of another condition. For example, the processor  110  may change the color of the text  1315  or the visual object  1316  to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  1314  or responsive to the occurrence of another condition. For example, on condition that a specified time duration has elapsed from the timing of displaying the first screen  1314  or responsive to the occurrence of another condition, the processor  110  may further display a visual effect around the text  1315  or the visual object  1316  to draw the user&#39;s attention further. For example, the processor  110  may control the display  125  to cause at least one of the text  1315  and the visual object  1316  to blink, so as to draw the user&#39;s attention more, on condition that a specified time duration has elapsed from the timing of displaying the first screen  1314  or responsive to the occurrence of another condition. According to embodiments, the processor  110  may output audio signals via a speaker of the electronic device  101  or provide vibrations through an actuator of the electronic device  101  to draw the user&#39;s attention further, in lieu of changing displaying of the first screen  1314 , on condition that a specified time duration has elapsed from the timing of displaying the first screen  1314  or responsive to the occurrence of another condition. However, the configuration is not limited thereto. 
     In operation  1310 , the processor  110  may display a second screen including the first information and second information for guiding to change the state of the electronic device  101  to the first state, based on identifying that the electronic device  101  is the second state. For example, since the width of the electronic device in the second state is wider than that of the electronic device in the first state, the stability when the electronic device  101  in the second state is positioned relative to the external electronic device  102  may be lower than stability when the electronic device  101  in the first state is positioned relative to the external electronic device  102 . For example, the stability in alignment of the external electronic device  102  and the electronic device  101  in the second state may be lower than the stability in alignment of the external electronic device  102  and the electronic device  101  in the first state, and therefore, the second screen may further include the second information, unlike the first screen. 
     For example, referring to  FIG.  13 B , the processor  110  may provide a display state  1320 , based on identifying that the state of the electronic device  101  is the second state defined through the description of  FIGS.  4 A and  4 B . In the display state  1320 , the processor  110  may display a second screen  1322  including the second information  1321 . For example, the second screen  1322  may be displayed in the first display area and the second display area of the display  125  exposed out of the housing  400 , unlike the first screen  1314 . 
     In an embodiment, the second screen  1322  may further include second information  1321 , unlike the first screen  1314 . In an embodiment, the second information  1321  may include a text guiding to change the state of the electronic device  101  to the first state. Although not shown in  FIG.  13 B , in an embodiment, the second information  1321  may further include an image or an animation for guiding to change the state of the electronic device  101  to the first state. 
     In an embodiment, the visual object  1316  in the second screen  1322  may be displayed in an area adjacent to an edge  1323  of the display  125 , unlike the visual object  1316  displayed in the center area of the first screen  1314 . For example, since the visual object  1316  in the second screen  1322  is displayed at a position corresponding to the position where the coil  160  is disposed in the second state, the visual object  1316  in the second screen  1322  may be displayed in the area adjacent to the edge  1323  of the display  125 . 
     In an embodiment, the second screen  1322  may be superimposed on another screen, like the first screen  1314 . For example, the second screen  1322  may be superimposed on the lock screen  1317 . For example, the second screen  1322  may be superimposed on the screen displayed through the display  125  immediately before displaying the second screen  1322 , in order to inform that the electronic device  101  is in a state different from the user&#39;s intention to charge the battery  150  of the electronic device  101 . In an embodiment, the second screen  1322  may further include a visual object  1318  for providing at least part of information in the screen disposed beneath the second screen  1322 . Since the size of the second screen  1322  is larger than the size of the first screen  1314 , the visual object  1318  in the second screen  1322  may provide more information than the visual object  1318  in the first screen  1314 . For example, the visual object  1318  in the second screen  1322  may include a thumbnail image of a screen disposed beneath the second screen  1322 , unlike the visual object  1318  in the first screen  1314 . For example, the visual object  1318  in the second screen  1322  may further include at least one executable element  1324  for executing at least one function provided through a screen disposed beneath the second screen  1322 , unlike the visual object  1318  in the first screen  1314 . However, it is not limited thereto. 
     In an embodiment, displaying on the second screen  1322  may change over time, as in displaying on the first screen  1314 . 
     Referring back to  FIG.  13 A , in operation  1311 , the processor  110  may display a third screen including third information to guide that the battery  150  is in charging, based on identifying that the power is equal to or greater than the designated power. In an embodiment, the third screen may further include fourth information, on condition that the state of the electronic device  101  is the second state. For example, the fourth information may be displayed in the third screen to guide a recommendation to change the state of the electronic device  101  to the first state. 
     For example, referring to  FIG.  13 B , the processor  110  may provide a display state  1340  based on identifying that the power is equal to or greater than the designated power while the state of the electronic device  101  is the first state defined through the description of  FIGS.  4 A and  4 B . For example, in the display state  1340 , the processor  110  may display a third screen  1342  including third information  1341  to guide that the battery  150  is in charging, in the first display area. For example, the third information  1341  may include at least one of a visual object or a text to indicate the remaining amount of the battery  150  in charging. In an embodiment, the third screen  1342  may further include information  1343  indicating a time to be taken until the battery  150  is fully charged. However, it is not limited thereto. In an embodiment, the third screen  1342  may disappear after being displayed for a specified time duration. 
     For another example, the processor  110  may provide a display state  1350  based on identifying that the power is greater than or equal to the designated power while the state of the electronic device  101  is the second state defined through the description of  FIGS.  4 A and  4 B . For example, in the display state  1350 , the processor  110  may display a third screen  1352  including fourth information  1351  as well as the third information  1341 . For example, the electronic device  101  in the second state is positioned relative to the external electronic device  102  in a more unstable state than the electronic device  101  in the first state, and therefore, the third screen  1352  may further include the fourth information  1351 . For example, the fourth information  1351  may include a text guiding the recommendation to change the state of the electronic device  101  to the first state. For example, the third screen  1352  may further include information  1353  indicating the time to be taken until the battery  150  is fully charged, such as information  1343  in the third screen  1342 . However, it is not limited thereto. In an embodiment, the third screen  1352  may disappear after being displayed for a specified time duration. 
     Although not shown in  FIGS.  13 A and  13 B , based on identifying that the power is changed to the designated power or more while displaying the first screen or the second screen, the processor  110  may change the display state  1312  to the display state  1340 , or change the display state  1320  to the display state  1350 . In an embodiment, the processor  110  may, based on the identification, change the display state  1312  to the state  1340  via an intermediate state as a state  710 , or change the display state  1320  to the state  1350  via an intermediate state as a state  720 . 
       FIG.  14    is a flowchart illustrating a method of providing notifications guiding to change state of the electronic device according to an embodiment. This method may be applied to the electronic devices illustrated in  1 B to  4 B 
     Referring to  FIG.  14   , in operation  1402 , the processor  110  may receive a wireless signal for charging the battery  150  from the external electronic device  102 . For example, the wireless signal may be received via the coil  160  from at least one coil of the external electronic device  102 . For example, the processor  110  may acquire electric power for charging the battery  150 , using a PMIC  140 , based on the wireless signal received through the coil  160 . For example, the processor  110  may obtain the power provided based on the wireless signal. 
     In an embodiment, the processor  110  may perform operation  1404  and the following operations  1408  to  1416  while processor  110  receives the wireless signal. In an embodiment, the processor  110  may perform operation  1404  and the following operations  1408  to  1416  while processor  110  receives the wireless signal and/or subsequent to the processor  110  receiving the wireless signal. 
     In the operation  1404 , the processor  110  may identify whether the state of the electronic device  101  is in either a first state or a second state. For example, the second state is defined by a first total area of an exposed portion of the display  125 , and the first state is defined by a second total area of an exposed portion of the display  125 , the second total area being greater than the first total area. For example, if the electronic device  101  is the foldable display device illustrated in  FIG.  2 A to  3 B , the second state may be a fully folded state of the foldable display device as shown by state  270  and state  370  of  FIGS.  2 B and  3 B  respectively, and the first state may be the other states except for the second state (e.g., one or more of the states  200 ,  250 ,  260 ,  300 ,  350 , and/or  360 ). In another example, if the electronic device  101  is the rollable display device as shown in  FIGS.  4 A to  4 B , the second state may a state in which a portion of the display  125  rolled into the housing as shown by the state  410  of  FIG.  4 A , and the first state may be other states (e.g., the state  450 ) except for the second state. For example, when the electronic device  101  is in the first state, and thus providing a larger size than the electronic device  101  in the second state, the electronic device  101  may be positioned relative to the external electronic device  102  in an unstable manner. The processor  110  may identify whether the state of the electronic device  101  is the first state or the second state. 
     In operation  1406 , the processor  110 , based on identifying that the state of the electronic device  101  is the first state, may provide a first notification guiding to change the first state to the second state. In a state that the display  125  is exposed toward the outside like  FIG.  6 B,  6 C , or  13 B, if the electronic device  101  is the foldable display device, the first notification may be provided by displaying the first notification like the fourth information  651  or  684  shown in  FIGS.  6 B and  6 C , and if the electronic device  101  is the rollable display device, the first notification may be provided by displaying the first notification like the fourth information  651 ,  684  or  1351  shown in  FIG.  6 B,  6 C or  13 B . In a state that the display  125  is not exposed toward the outside like  FIG.  12 B , the first notification may be provided by audio signals through the speaker of the electronic device  101  or vibrations through the actuator of the electronic device  101 , or displaying a visual effect along at least one of the sides of the display  125  like  FIG.  12 B . 
     In operation  1408 , the processor  110  may detect whether the electronic device  101  is in the second state. If the electronic device  101  is in the second state, in operation  1410 , the processor  110  may identify whether there is a display exposed toward the outside of at least one display of the electronic device  101  mounted on the external electronic device  102 . In other words, the processor  110  may identify whether a surface of the housing on which the display  125  is not disposed faces away the external electronic device  102  like  FIG.  12 B . 
     In the operation  1412 , the processor  110 , based on identifying that there is no display exposed to the outside, may provide a second notification to guide that the electronic device  101  is abnormally positioned relative to the external electronic device  102 . As an example, when no display is exposed to the outside (e.g., visible), it means that there is no display in a state of being viewed by the user, and therefore, the second notification may be provided by means of at least one of audio signals, vibrations, or blinking like the ways explained above with reference to  FIG.  12 B . As an example, when no display exists exposed to the outside, it means that there is no display in a state of being viewed by the user, and therefore, the second notification may be provided using another device, such as the wearable device  777  shown in  FIG.  7 C . 
     In operation  1414 , the processor  110  may identify whether the electronic device  101  is properly aligned with the external electronic device  102 . For example, the proper alignment may be determined by whether the electronic device  101  is positioned relative to the external electronic device  102  in an arrangement that a distance between the center of the coil  160  in the electronic device  101  and the center of at least one coil in the external electronic device  102  is within a certain distance (e.g., 1 cm). 
     In the operation  1416 , the processor  110  may display a screen including information to guide the electronic device  101  to be aligned with the external electronic device  102 , based on identifying that the electronic device  101  is not fittingly aligned with the external electronic device  102  using the ways explained herein. 
     As apparent from the foregoing, the electronic device  101  can adaptively display a screen according to the state of the electronic device  101 . For example, the electronic device  101  can provide different screens depending on whether the electronic device  101  is in a first state or a second state (or some other state), on condition that the electric power is less than a designated power, so that it is possible to prevent charging of the battery  150  from being substantially not performed or abnormally performed due to a possible misalignment between an electronic device  101  and an external electronic device  102 . 
     As described above, an electronic device according to an embodiment includes a first housing including a first surface and a second surface opposite the first surface; a second housing including a third surface and a fourth surface opposite the third surface; a third housing including a hinge structure pivotably connecting a first side surface of the first housing and a second side surface of the second housing facing the first side surface of the first housing; a display including a flexible display disposed on the first surface and the third surface and extending across the third housing; a battery that is rechargeable; a memory configured to store instructions; and a processor, wherein the processor, when executing the instructions, is configured to receive a wireless signal for charging the battery from an external electronic device; based on detecting, while a state of the electronic device is a first state in which an angle between a first direction the first surface faces and a second direction the third surface faces is within a first range, that a power provided based on the wireless signal is less than a designated power, display, via the display, a first screen including first information guiding the electronic device to be aligned with the external electronic device for charging of the battery; and based on detecting, while the state of the electronic device is a second state in which the angle is within a second range different from the first range, that the power is less than the designated power, display, via the display, a second screen including the first information and second information guiding to change the state to the first state. 
     In an embodiment, the processor may be, when executing the instructions, further configured to, based on detecting, while the state of the electronic device is the first state, that the power is greater than or equal to the designated power, display, via the display, a third screen including third information guiding that the battery is being charged. In an embodiment, the processor may be, when executing the instructions, further configured to, in response to detecting, while displaying the first screen, that the power is greater than or equal to the designated power, switch the first screen displayed via the display to a fourth screen including fourth information guiding that the electronic device is aligned with the external electronic device, and after displaying via the at least one display the fourth screen for a designated time duration, switch the fourth screen to the third screen. 
     In an embodiment, the display may include a first display which is the flexible display and a second display disposed on the fourth surface, wherein the first screen may be displayed via the second display of the first display and the second display, and wherein the second screen may be displayed via the first screen of the first display and the second display. 
     In an embodiment, the display may include a first display which is the flexible display and a second display disposed on the second surface, wherein the first screen may be displayed via the second display of the first display and the second display, and wherein the second screen may be displayed via the first screen of the first display and the second display. 
     In an embodiment, the electronic device further includes a coil operatively coupled with the battery, the coil being used for receiving the wireless signal; and a UWB communication circuitry, wherein the processor may be, when executing the instructions, further configured to: emit, via the UWB communication circuitry, a first signal toward the external electronic device, based on at least one signal received from the external electronic device through the at least one coil before receiving the wireless signal from the external electronic device; receive, via the UWB communication circuitry, a second signal in which at least a portion of the first signal is reflected by the external electronic device; identify, based on the first signal and the second signal, a relative location relationship between the electronic device and the external electronic device; and display, further based on the relative location relationship, the first screen or the second screen. 
     In an embodiment, the electronic device further includes NFC circuitry, wherein the processor is, when executing the instructions, further configured to identify, based on a signal transmitted via the NFC circuitry to the external electronic device or received via the NFC circuitry from the external electronic device while receiving the wireless signal, a relative location relationship between the electronic device and the external electronic device, and display, further based on the relative location relationship, the first screen or the second screen. 
     In an embodiment, the electronic device further includes a first coil operatively coupled with the battery, the coil being used for receiving the wireless signal, and a second coil electrically separated from the first coil, wherein the processor is, when executing the instructions, further configured to, while receiving the wireless signal through the first coil, receive the wireless signal or receive another wireless signal distinct from the wireless signal, through the second coil from the external electronic device, identify a relative location relationship between the electronic device and the external electronic device, based on the wireless signal received through the second coil or the other wireless signal received through the second coil, and display, further based on the relative location relationship, the first screen or the second screen. 
     In an embodiment, the processor may be, when executing the instructions, further configured to display the first screen or the second screen, at least partially superimposed on a third screen displayed via the display before the detection, wherein the first screen or the second screen at least partially superimposed on the third screen may be translucent such that at least portion of the third screen is visible. 
     In an embodiment, the electronic device further includes a coil operatively coupled with the battery, the coil being used for receiving the wireless signal, wherein the first information may include a visual object for indicating a location of center of the coil. In an embodiment, the first information further includes another visual object for indicating a location of center of a coil in the external electronic device used for transmitting the wireless signal. 
     In an embodiment, the electronic device further includes a communication circuitry, wherein the processor may be, when executing the instructions, further configured to, based on identifying that a designated time duration has elapsed after displaying the first screen or the second screen, identify whether the power is changed from a first power less than the designated power to a second power greater than or equal to the designated power, and based on identifying that the power is not changed from the first power to the second power, transmit, via the communication circuitry to a wearable electronic device, a message for providing through the wearable electronic device a notification guiding the electronic device to be aligned with the external electronic device. In an embodiment, the processor may be, when executing the instructions, further configured to, on condition that the wearable electronic device is earbuds worn by a user of the electronic device, transmit, via the communication circuitry to the wearable electronic device, the message for outputting the notification through a speaker of the wearable electronic device, and on condition that the wearable electronic device is a watch worn by the user of the electronic device, transmit, via the communication circuitry to the wearable electronic device, the message for displaying the notification through a display of the wearable electronic device. 
     In an embodiment, the electronic device further includes a coil operatively coupled with the battery, the coil being used for receiving the wireless signal, wherein the processor is, when executing the instructions, configured to, identify the designated power, based on a signal exchanged with the external electronic device through the coil by using in-band communication before receiving the wireless signal, and detect, while receiving the wireless signal through the coil from the external electronic device, whether the power is less than the designated power. 
     In an embodiment, the electronic device further includes a sensor, wherein the display may include a first display which is the flexible display and a second display disposed on the fourth surface, and wherein the processor may be, when executing the instructions, further configured to, based on detecting, while the state is the first state and the second surface is brought into contact with the external electronic device, that the power is less than the designated power, display the first screen via the second display of the first display and the second display, based on detecting, while the state is the second state and the second surface is brought into contact with the external electronic device, that the power is less than the designated power, display the second screen via the first display of the first display and the second display, and based on detecting, while the state is the first state or the second state, that for charging of the battery the fourth surface is brought into contact with the external electronic device, through the sensor, provide a notification guiding that the electronic device is abnormally positioned relative to the external electronic device. In an embodiment, the notification may be outputted through a speaker of the electronic device, provided through vibrations of an actuator of the electronic device, or displayed along at least a portion of sides of the second display. 
     In an embodiment, the display may include a first display which is the flexible display and a second display disposed on the second surface, wherein the processor may be, when executing the instructions, further configured to, based on detecting, while the state is the first state and the fourth surface is brought into contact with the external electronic device, that the power is less than the designated power, display the first screen via the second display of the first display and the second display, based on detecting, while the state is the second state and the fourth surface is brought into contact with the external electronic device, that the power is less than the designated power, display the second screen via the first display of the first display and the second display, and based on detecting, while the state is the first state or the second state, that for charging of the battery the second surface is brought into contact with the external electronic device, through the sensor, based on the power less than the designated power, provide a notification guiding that the electronic device is abnormally positioned relative to the external electronic device. 
     As described above, an electronic device according to an embodiment includes a housing, a display rollable into the housing, a battery that is rechargeable, a memory configured to store instructions, and a processor, the processor, when executing the instructions, may be configured to receive, from an external electronic device, a wireless signal for charging the battery, based on detecting, while the electronic device is in a first state in which a first display area of the display is exposed and a second display area of the display adjacent to the first display area is at least partially rolled into the housing, that a power provided based on the wireless signal is less than a designated power, display, within the first display area, a first screen including first information guiding the electronic device to be aligned with the external electronic device for charging of the battery, and based on detecting, while the electronic device is in a second state in which both the first display area and the second display area are exposed, that the power is less than the designated power, display, within the first display area and the second display area, a second screen including the first information and second information guiding to change the state of the electronic device to the first state. 
     In an embodiment, the processor, when executing the instructions, may be further configured to, based on detecting, while the electronic device is in the first state, that the power is greater than or equal to the designated power, display, within the first display area, a third screen including third information guiding that the battery is being charged. In an embodiment, the processor, when executing the instructions, may be further configured to, in response to detecting, while the first information is displayed, that the power is greater than or equal to the designated power, switch the first screen displayed within the first display area to a fourth screen including fourth information guiding that the electronic device is aligned with the external electronic device, and after displaying the fourth screen within the first display area for a designated time duration, switch the fourth screen to the third screen. 
     The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above. 
     It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C,” may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element. 
     As used in connection with various embodiments of the disclosure, the term “module” may include a unit implemented in hardware, software, or firmware, and may be interchangeably used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment of the disclosure, the module may be implemented in a form of an application-specific integrated circuit (ASIC). 
     Various embodiments as set forth herein may be implemented as software including one or more instructions that are stored in a storage medium (e.g., a memory  120 ) that is readable by a machine (e.g., an electronic device  101 ). For example, a processor (e.g., a processor  110 ) of the machine (e.g., an electronic device  101 ) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein, the term “non-transitory” simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium. 
     According to an embodiment of the disclosure, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., PlayStore™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer&#39;s server, a server of the application store, or a relay server. 
     According to various embodiments of the disclosure, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments of the disclosure, one or more of the above-described components may be omitted, or one or more other components may be added. Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments of the disclosure, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments of the disclosure, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added. 
     While the disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.