Patent Description:
Along with the rapid development of mobile terminals, mobile terminals have become an indispensable tool and brought great convenience for our lives. Compared with the mobile terminal with a small ratio of screen-to-body, the mobile terminal with a large ratio of screen-to-body provides excellent user experience, hence, there is such a trend toward to increase the ratio of screen-to-body. In the related art, a fingerprint identification module is arranged right below a display screen. However, by using the fingerprint identification module to identify fingerprints, the success rate of fingerprints identification is low, due to a relatively low brightness value of the display screen.

<CIT> discloses an under-screen optical sensor module for on-screen fingerprint sensing.

<CIT> discloses a fingerprint collecting method and a related device.

In one aspect, the present disclosure provides in some embodiments a display screen, including an Organic Light-Emitting Diode (OLED) display screen and an optical fingerprint module arranged in the OLED display screen. The OLED display screen includes a light-emitting layer and a touch screen. The light-emitting layer includes a first light-emitting region and a second light-emitting region. The first light-emitting region is arranged at a position corresponding to the optical fingerprint module and is configured to emit light at a first preset brightness value, when the region of the touch screen, which corresponds to the first light-emitting region, is not touched. When the region of the touch screen, which corresponds to the first light-emitting region, is touched, the first light-emitting region emits light at a second preset brightness value, which is larger than the first preset brightness value.

In another aspect, the present disclosure provides in some embodiments of a mobile terminal including the above-mentioned display screen.

In yet another aspect, the present disclosure provides in some embodiments of a display method for the above-mentioned mobile terminal, including, when it is detected that the touch screen is touched and skin patterns on the touch screen have been detected by the optical fingerprint module, controlling the first light-emitting region emits light at the second preset brightness value.

In still another aspect, the present disclosure provides in some embodiments a mobile terminal, including a memory, a processor, and a computer program stored in the memory and executed by the processor. The processor is configured to execute the computer program so as to implement the steps of the above-mentioned display method.

In still yet another aspect, the present disclosure provides in some embodiments a computer-readable storage medium storing in a computer program. The computer program is executed by a processor so as to implement the steps of the above-mentioned display method.

In order to clearly illustrate the technical solutions of the present disclosure or the related art in a clearer manner, the drawings of the present disclosure or the related art will be described in the following briefly. Obviously, the following drawings merely relate to some embodiments of the present disclosure, and based on these drawings, a person skilled in the art may obtain the other drawings without any creative effort.

In order to make objects, the technical solutions and the advantages of the present disclosure more apparent, the present disclosure will be described hereinafter in a clear and complete manner in connection with the drawings and embodiments.

As shown in <FIG>, the present disclosure provides in some embodiments of a display screen, which includes an OLED display screen <NUM> and an optical fingerprint module <NUM> arranged in the OLED display screen <NUM>. The OLED display screen <NUM> may include a light-emitting layer <NUM> and a touch screen. The light-emitting layer may include a first light-emitting region <NUM> and a second light-emitting region <NUM>. The first light-emitting region <NUM> may be arranged at a position corresponding to the optical fingerprint module <NUM> and configured to emit light at a first preset brightness value, when the region of the touch screen, which corresponds to the first light-emitting region, is not touched. When the region of the touch screen, corresponding to the first light-emitting region <NUM>, is touched, the first light-emitting region <NUM> emits light at a second preset brightness value. The first preset brightness value is smaller than the second preset brightness value.

The OLED display screen <NUM> may include the light-emitting layer <NUM> and the touch screen <NUM>. An area about a cross section of the light-emitting layer <NUM> may equal to, or slightly greater than, an area about a cross section of the touch screen <NUM>, so as to ensure each portion of the touch screen <NUM> can be irradiated by the light from the light-emitting layer.

Each portion of the light-emitting layer <NUM> may emit light at a same brightness value, or emit light at brightness values having a difference within a certain range, so as to provide the light of the touch screen with a homogeneous brightness value as viewed by user's eyes. For example, the difference among the brightness values may be within <NUM> to <NUM> cd/m<NUM>. To be clarified, cd/m<NUM> is a luminance unit.

The first light-emitting region <NUM> and the second light-emitting region <NUM>, including their positions and areas, may have been designed just at the beginning of the design of the display screen.

The touch screen may be pressed by a body part of the user having skin patterns, such as a finger. It should be noted that, the touch screen <NUM> may be pressed by the user's finger, because the optical fingerprint module <NUM> in the OLED display screen <NUM> is specially used to identify the fingerprint.

Herein, specific values of the first preset brightness value and the second preset brightness value will not be particularly defined, as long as the first preset brightness value is smaller than the second preset brightness value.

Two separate circuits may be provided to supply power to the first light-emitting region <NUM> and the second light-emitting region <NUM>, respectively. For example, the power may be supplied to the first light-emitting region <NUM> through two electric wires, i.e., a first electric wire and a second electric wire. The first electric wire is configured to provide an Emissive Layer Voltage Device Device (ELVDD) to the first light-emitting region, and the second electric wire is configured to provide an Emissive Layer Voltage Series Series (ELVSS) to the first light-emitting region <NUM>. In addition, the power may be supplied to the second light-emitting region <NUM> through two electric wires, i.e., a third electric wire and a fourth electric wire. The third electric wire is configured to supply the ELVDD to the second light-emitting region the <NUM>, and the fourth electric wire is configured to supply ELVSS to the second light-emitting region <NUM>. When the touch screen <NUM> is not touched, the first electric wire and the third electric wire may each provide a voltage of <NUM>. 6V, and the second electric wire and the fourth electric wire may each provide a voltage of <NUM>. Under the effect of the above voltages, the first light-emitting region <NUM> and the second light-emitting region <NUM> may each emit the light at <NUM> cd/m<NUM>, i.e., the first preset brightness value. When the touch screen <NUM> is touched, the first electric wire may provide a voltage of <NUM>. 5V and the second electric wire may provide a voltage of <NUM>. 0V, so as to enable the first light-emitting region <NUM> to emit the light at <NUM> cd/m<NUM>, i.e., the second preset brightness value. Based on the above configuration, it is able to increase the brightness value of the first light-emitting region <NUM> when the touch screen <NUM> is touched, and enable the optical fingerprint module <NUM> to identify the skin patterns, e.g., the fingerprint improves a fingerprint identification success rate of the display screen in a more accurate manner.

Different voltages may be provided when a processor of a mobile terminal is reading information at different regions of the touch screen <NUM>. For example, an ELVDD of <NUM>. 6V and an ELVSS of <NUM>. 8V may be provided when the processor is reading information on the touch screen <NUM> at a position corresponding to the second light-emitting region <NUM>, and an ELVDD of <NUM>. 5V and an ELVSS of <NUM>. 0V may be provided when the processor is reading information on the touch screen <NUM> at a position corresponding to the first light-emitting region <NUM>. Based on the above configuration, it is also able to increase the brightness value of the first light-emitting region <NUM>, and enable the optical fingerprint module <NUM> to identify the skin patterns, e.g., the fingerprint, in a more accurate manner, thereby to improve the fingerprint identification success rate of the display screen.

As shown in <FIG>, the OLED display screen <NUM> may include the touch screen <NUM>, a transparent adhesive layer <NUM>, a polarizer <NUM>, an upper glass substrate <NUM>, the light-emitting layer <NUM>, a lower glass substrate <NUM>, and a protection foam layer <NUM>. The polarizer <NUM> is attached to the touch screen <NUM> by the transparent adhesive layer <NUM>. The polarizer <NUM> is configured to change a transmission direction of the light, so as to increase a transmittance and decrease a reflectance. Thereby, the entire display screen presents better display effects. In addition, the light-emitting layer <NUM> may be arranged between the upper glass substrate <NUM> and the lower glass substrate <NUM>, in order to facilitate the transmission of the light from the light-emitting layer <NUM>. The protection foam layer <NUM> is configured to protect the optical fingerprint module <NUM>. The optical fingerprint module <NUM> may be arranged at a same layer as, or arranged below, the protection foam layer <NUM>, so as to be protected by the protection foam layer.

According to the embodiments of the present disclosure, the display screen may include the display screen and the optical fingerprint module arranged in the OLED display screen. The OLED display screen may include the light-emitting layer and the touch screen. The light-emitting layer may include the first light-emitting region and the second light-emitting region. The first light-emitting region may be arranged at a position corresponding to the optical fingerprint module and configured to, emit light at a first preset brightness value, when the region of the touch screen, which corresponds to the first light-emitting region, is not touched. When the region of the touch screen, which corresponds to the first light-emitting region, is touched, the first light-emitting region emits light at a second preset brightness value, which is larger than the first preset brightness value. When it is detected that the region of the touch screen, which corresponds to the first light-emitting region, is touched, the brightness value of the first light-emitting region may be changed from the first preset brightness value to the second preset brightness value. As a result, it is able to increase the brightness value of the first light-emitting region. Furthermore, there is an improvement of the fingerprint identification success rate of the display screen.

In a possible embodiment of the present disclosure, the range of a screen-to-body ratio of the OLED display screen <NUM> is <NUM>% to <NUM>%.

When the screen-to-body ratio of the OLED display screen <NUM> is <NUM>% or <NUM>%, it is able for the first light-emitting region <NUM> to emit light at the first preset brightness value when the region of the touch screen <NUM>, which corresponds to the first light-emitting region <NUM>, is not touched. And the first light-emitting region <NUM> emits light at the second preset brightness value when the region of the touch screen <NUM>, which corresponds to the first light-emitting region <NUM>, is touched.

In the embodiments of the present disclosure, through the OLED display screen having the screen-to-body ratio of <NUM>% to <NUM>%, the first light-emitting region may emit light at the first preset brightness value when the region of the touch screen <NUM>, which corresponds to the first light-emitting region <NUM>, is not touched. And the first light-emitting region emits light at the second preset brightness value when the region of the touch screen <NUM>, which corresponds to the first light-emitting region <NUM>, is touched. In addition, it is able for the OLED display screen having the screen-to-body ratio of <NUM>% to <NUM>% to improve the above effect more obviously.

In a possible embodiment of the present disclosure, the second light-emitting region <NUM> is configured to emit light at the first predetermined brightness value, both when the region of the touch screen <NUM>, which corresponds to the first light-emitting region <NUM>, is not touched, and when the region of the touch screen <NUM>, which corresponds to the first light-emitting region <NUM>, is touched.

In the embodiments of the present disclosure, the second light-emitting region is configured to emit light at the first preset brightness value all the time, so as to ensure that the region of the touch screen, which corresponds to the second light-emitting region <NUM>, has a constant brightness value. Hence, such a configuration can facilitate the reading of the information on the touch screen at the position corresponding to the second light-emitting region, and prolongs a service life of the display screen.

In a possible embodiment of the present disclosure, the first preset brightness value may be greater than or equal to <NUM> cd/m<NUM>.

In the embodiments of the present disclosure, when the first preset brightness value is greater than or equal to <NUM> cd/m<NUM>, it is able to further improve the fingerprint identification success rate of the optical fingerprint module, and also improve the fingerprint identification success rate of the display screen.

In a possible embodiment of the present disclosure, the second preset brightness value may be <NUM> to <NUM> cd/m<NUM>.

In the embodiments of the present disclosure, when the second preset brightness value is <NUM> to <NUM> cd/m<NUM>, it is able to prolong the service life of the display screen and promote the controllability of the display screen.

In a possible embodiment of the present disclosure, the optical fingerprint module <NUM> may be arranged in the OLED display screen <NUM> through an adhesive.

In the embodiments of the present disclosure, when the optical fingerprint module is arranged in the OLED display screen through the adhesive, it is able to fix the optical fingerprint module in a better manner. In addition, when a fault occurs for the optical fingerprint module, it is able to facilitate the disassembly of the optical fingerprint module, thereby to facilitate the maintenance of the display screen.

The present disclosure further provides in some embodiments of a mobile terminal including the above-mentioned display screen.

The mobile terminal may be a mobile phone, a tablet personal computer, a laptop computer, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a wearable device.

According to the mobile terminal including the display screen in the embodiments of the present disclosure, when the region of the touch screen, which corresponds to the first light-emitting region, is touched, the brightness value of the first light-emitting region may be changed from the first preset brightness value to the second preset brightness value. As a result, it is able to not only increase the brightness value of the first light-emitting region, but also improve the fingerprint identification success rate of the display screen.

As shown in <FIG>, the present disclosure further provides in some embodiments a display method for the above-mentioned mobile terminal, which includes Step <NUM> of, when it is detected that the touch screen is touched and skin patterns on the touch screen have been detected by the optical fingerprint module, controlling the first light-emitting region to emit light at the second preset brightness value.

According to the embodiments of the present disclosure, when it is detected that the touch screen is touched and the skin patterns on the touch screen have been detected by the optical fingerprint module, the first light-emitting region may be controlled to emit light at the second predeset brightness value. When the first light-emitting region emits light at the second preset brightness value, it is able to improve the fingerprint identification success rate of the optical fingerprint module.

In a possible embodiment of the present disclosure, subsequent to Step <NUM>, the display method may further include controlling the second light-emitting region to emit light at the first predetermined brightness value.

In the embodiments of the present disclosure, the second light-emitting region may be controlled to emit light at the first preset brightness value when the first light-emitting region is controlled to emit light at the second preset brightness value, so as to enable the entire display screen to display at the constant brightness values, which improves the user experience. In addition, it is able to prevent the second light-emitting region from emitting light at the second preset brightness value, thereby to reduce the power consumption for the entire display screen.

As shown in <FIG>, the present disclosure further provides in some embodiments a display method for the above-mentioned mobile terminal, which includes: Step <NUM> of, when it is detected that the touch screen is touched and skin patterns on the touch screen have been detected by the optical fingerprint module, controlling an ELVDD applied to the OLED display screen at a first preset value, and controlling an ELVSS applied to the OLED display screen at a second preset value; and Step <NUM> of, when the ELVDD is the first preset value and the ELVSS is the second preset value, controlling the first light-emitting region to emit light at the second preset brightness value.

Prior to Step <NUM>, considering the service life and the stability of the mobile terminal, usually the ELVDD applied to the entire OLED display screen may be controlled to be smaller than a first threshold, and the ELVSS may be controlled to be smaller than a second threshold. The first threshold may be smaller than the first preset value, and the second threshold may be smaller than the second preset value. When the first light-emitting region needs to emit light at the second preset brightness value, it is necessary to control the ELVDD applied to the entire OLED display screen to be the first preset value and control the ELVSS applied to the entire OLED display screen to be the second preset value. It should be noted that, specific values of the first preset value and the second preset value will not be particularly defined herein.

In the embodiments of the present disclosure, through the above settings, when the ELVDD applied to the entire OLED display screen is the first preset value and the ELVSS applied to the entire OLED display screen is the second preset value, the first light-emitting region may be controlled to emit light at the second preset brightness value. As a result, it is able to achieve functions of the display screen in a better manner, and prolong the service life of the entire display screen.

As shown in <FIG>, the present disclosure further provides in some embodiments a mobile terminal <NUM> which includes a Radio Frequency (RF) circuit <NUM>, a memory <NUM>, an input unit <NUM>, a display unit <NUM>, a processor <NUM>, an audio frequency circuit <NUM>, a Wireless Fidelity (WiFi) module <NUM> and a power source <NUM>.

The input unit <NUM> is configured to receive digital or character information inputted by the user, and generate a signal input related to user settings and function control of the mobile terminal <NUM>. To be specific, the input unit <NUM> may include a touch panel <NUM>. The touch panel <NUM>, also called as touch screen, is configured to collect a touch operation made by the user on or in proximity to the touch screen (e.g., an operation made by the user through any appropriate object or attachment (e.g., finger or stylus) on or in the proximity to the touch panel <NUM>), and drive a corresponding connection device in accordance with a predetermined program. In a possible embodiment of the present disclosure, the touch panel <NUM> may include a touch detection unit and a touch controller. The touch detection unit is configured to detect a touch position and a signal generated due to the touch operation, and transmit the signal to the touch controller. The touch controller is configured to receive touch information from the touch detection unit, convert it into coordinates of a touch point, transmit the coordinates to the processor <NUM>, and receive and execute a command from the processor <NUM>. In addition, the touch panel <NUM> may be of a resistive type, a capacitive type, an infrared type or a surface acoustic wave (SAW) type. The input unit <NUM> may further include an input device <NUM> which includes, but not limited to, a physical keyboard, a functional button (e.g., a volume control button or an on/off button), a trackball, a mouse, and a joystick.

The display unit <NUM> is configured to display information inputted by the user or information to be presented to the user, and various interfaces for the mobile terminal <NUM>, and it may include a display panel <NUM>. In a possible embodiment of the present disclosure, the display screen <NUM> may be a Liquid Crystal Display (LCD) screen or an OLED screen.

It should be appreciated that, the touch panel <NUM> may cover the display panel <NUM>, so as to form a touch display screen. When the touch operation made on or in proximity to the touch display screen has been detected, the touch information may be transmitted to the processor <NUM> so as to determine a type of a touch event. Then, the processor <NUM> may provide corresponding visual output on the touch display screen in accordance with the type of the touch event.

The touch display screen may include an application interface display region and a commonly-used controls display region. An arrangement mode of the two display regions will not be particularly defined herein, e.g., one of the two display regions may be arranged above or under the other, or arranged to the left or the right of the other. The application interface display region may be adopted to display interfaces for applications, and each interface may include an icon for at least one application and/or an interface element such as Widget desktop control. The application interface display region may also be a blank interface where no content is contained. The commonly-used controls display region may be adopted to display controls which are used frequently, e.g., setting button, interface number, scroll bar, or such application icons as telephone book icon.

The processor <NUM> may be a control center of the mobile terminal <NUM>, and connected to each member of the entire mobile terminal via various interfaces and lines. The processor <NUM> is configured to run or execute software programs and/or modules stored in a first memory <NUM>, and call data stored in a second memory <NUM>, so as to achieve various functions of the mobile terminal <NUM> and process the data, thereby to monitor the mobile terminal <NUM>. In a possible embodiment of the present disclosure, the processor <NUM> may include one or more processing units.

The mobile terminal <NUM> may include a display screen, and the display screen may include an OLED display screen and an optical fingerprint module arranged in the OLED display screen. The display screen may include a light-emitting layer and a touch screen.

In a possible embodiment of the present disclosure, through calling software programs and/or modules stored in the first memory <NUM> and/or data stored in the second memory <NUM>, the processor <NUM> is configured to, when it is detected that the touch screen is touched and skin lines on the touch screen have been detected by the optical fingerprint module, control the first light-emitting region to emit light at the second predetermined brightness value.

The processor <NUM> is further configured to: when it is detected that the touch screen is touched and the skin patterns on the touch screen has been detected by the optical fingerprint module, control an ELVDD applied to the OLED display screen to be a first preset value, and control an ELVSS applied to the OLED display screen to be a second preset value; and when the ELVDD is the first preset value and the ELVSS is the second preset value, control the first light-emitting region to emit light at the second preset brightness value.

The processor <NUM> is further configured to control the second light-emitting region to emit light at the first preset brightness value.

The mobile terminal in the embodiments of the present disclosure may be a mobile terminal, a tablet personal computer, a PDA, or a vehicle-mounted computer.

The implementation of the mobile terminal <NUM> may refer to that mentioned hereinabove, and thus will not be particularly defined herein.

According to the mobile terminal <NUM> in the embodiments of the present disclosure, through the above settings, when the ELVDD applied to the entire OLED display screen is the first preset value and the ELVSS applied to the entire OLED display screen is the second preset value, the first light-emitting region may be controlled to emit light at the second preset brightness value. As a result, it is able to achieve functions of the display screen in a better manner, and prolong the service life of the entire display screen.

The present disclosure further provides in some embodiments a computer-readable storage medium storing therein a computer program. The computer program is executed by a processor so as to, when it is detected that the touch screen is touched and skin lines on the touch screen have been detected by the optical fingerprint module, control the first light-emitting region to emit light at the second predetermined brightness value.

It should be noted that, when the computer program is executed by the processor, it is able to achieve the above-mentioned functions, which will thus not be particularly defined herein.

It should be noted that, units and steps described in the embodiments of the present disclosure may be implemented in the form of electronic hardware, or a combination of a computer program and the electronic hardware. Whether or not these functions are executed by hardware or software depends on specific applications or design constraints of the technical solution. Different methods may be adopted with respect to the specific applications so as to achieve the described functions, without departing from the scope of the present disclosure.

It should be further noted that, for convenience and clarification, operation procedures of the system, device and units described hereinabove may refer to the corresponding procedures in the method embodiment, and thus will not be particularly defined herein.

It should be further noted that, the device and method may be implemented in any other ways. For example, the embodiments for the apparatus is merely for illustrative purposes, and the modules or units are provided merely on the basis of their logic functions. During the actual application, some modules or units may be combined together or integrated into another system. Alternatively, some functions of the module or units may be omitted or not executed. In addition, the coupling connection, direct coupling connection or communication connection between the modules or units may be implemented via interfaces, and the indirect coupling connection or communication connection between the modules or units may be implemented in an electrical or mechanical form or in any other form.

The units may be, or may not be, physically separated from each other. The units for displaying may be, or may not be, physical units, i.e., they may be arranged at an identical position, or distributed on a plurality of network elements. Parts or all of the units may be selected in accordance with the practical need, so as to achieve the purpose of the present disclosure.

In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or the functional units may exist independently, or two or more functional units may be combined together.

In the case that the functional units are implemented in a software form and sold or used as a separate product, they may be stored in a computer-readable medium. Based on this, the technical solutions of the present disclosure, partial or full, or parts of the technical solutions of the present disclosure contributing to the related art, may appear in the form of software products, which may be stored in a storage medium and include several instructions so as to enable computer equipment (a personal computer, a server or network equipment) to execute all or parts of the steps of the method according to the embodiments of the present disclosure. The storage medium includes any medium capable of storing therein program codes, e.g., a universal serial bus (USB) flash disk, a mobile hard disk (HD), a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

Claim 1:
A display screen (<NUM>), comprising an Organic Light-Emitting Diode, OLED display screen and an optical fingerprint module (<NUM>) arranged in the OLED display screen (<NUM>) , wherein the OLED display screen (<NUM>) comprises a light-emitting layer (<NUM>) and a touch screen (<NUM>), the light-emitting layer (<NUM>) comprises a first light-emitting region (<NUM>) and a second light-emitting region (<NUM>), and the first light-emitting region (<NUM>) is arranged at a position corresponding to the optical fingerprint module (<NUM>) and configured to, when the region of the touch screen (<NUM>), which corresponds to the first light-emitting region (<NUM>), is not touched, emit light at a first preset brightness value, and when the region of the touch screen (<NUM>), which corresponds to the first light-emitting region (<NUM>), is touched, emit light at a second preset brightness value, the first preset brightness value is smaller than the second preset brightness value,
characterized in that
two separate circuits are provided to supply power to the first light-emitting region (<NUM>) and the second light-emitting region (<NUM>).