Patent Publication Number: US-2022238611-A1

Title: Light emitting device

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the priority benefits of U.S. provisional application Ser. No. 63/142,501, filed on Jan. 28, 2021, and China application serial no. 202111547564.3, filed on Dec. 16, 2021. The entirety of each of the above-mentioned patent applications is hereby incorporated by reference herein and made a part of this specification. 
    
    
     BACKGROUND 
     Technical Field 
     The disclosure relates to a light emitting device. 
     Description of Related Art 
     Multiple sub-pixels are disposed in a light emitting device to provide required light emitting performance or present pictures. The arrangement of the sub-pixels often affects the light emitting performance and thus becomes a highly important part in designing light emitting devices. 
     SUMMARY 
     An embodiment of the disclosure provides a light emitting device including a substrate and multiple pixels. The pixels are disposed on the substrate, and each of the pixels includes multiple sub-pixels. Two adjacent sub-pixels are separated by a distance D, and one of the two adjacent sub-pixels has a height H. The distance and the height satisfy a relational expression: 0.3H&lt;D≤30H. 
     Embodiments accompanied with drawings are described in detail below to make the aforementioned features and advantages of the disclosure comprehensible. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings are included to provide a further understanding of the embodiment, and are incorporated in and constitute a part of this specification. The drawings illustrate the embodiments of the disclosure, and together with the description are used to explain the principles of the disclosure. 
         FIG. 1  is a schematic diagram of a light emitting device according to an embodiment of the disclosure. 
         FIG. 2  is a schematic cross-sectional diagram of the light emitting device of  FIG. 1  taken along a line I-I′. 
         FIG. 3  is a schematic diagram of a light emitting device according to an embodiment of the disclosure. 
         FIG. 4  is a schematic diagram of a light emitting device according to an embodiment of the disclosure. 
         FIG. 5  is a schematic diagram of an electronic device according to an embodiment of the disclosure. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     The disclosure may be understood by referring to the following detailed description in conjunction with the accompanying drawings. It should be noted that, in order to facilitate understanding and for concision of the drawings, only a part of an electronic device is shown in multiple drawings in the disclosure, and certain components in the drawings are not drawn to actual scale. In addition, the number and size of each component in the drawings are only exemplary and are not used to limit the scope of the disclosure. 
     Certain words will be used to refer to specific components throughout the specification and the appended claims of the disclosure. People skilled in the art should understand that electronic apparatus manufacturers may refer to same components under different names. The disclosure does not intend to distinguish between components having same functions but different names. In the following specification and claims, the words “comprising,” “having,” and “including” are open-ended words and thus should be interpreted as “including but not limited to.” Therefore, the terms “comprising,” “having,” and/or “including,” when used in the description of the disclosure, specify the existence of corresponding features, regions, steps, operations, and/or members but do not exclude the existence of one or more corresponding features, regions, steps, operations, and/or members. 
     Wordings used herein to indicate directions, such as “up,” “down,” “front,” “back,” “left,” and “right,” merely refer to directions in the accompanying drawings. Therefore, the directional wordings are used to illustrate rather than limit the disclosure. In the accompanying drawings, the drawings illustrate the general features of the methods, structures, and/or materials used in the particular exemplary embodiments. However, the drawings shall not be interpreted as defining or limiting the scope or nature covered by the exemplary embodiments. For example, the relative size, thickness, and location of layers, regions, or structures may be reduced or enlarged for clarity. 
     When a corresponding member (such as a layer or a region) is described as being “disposed or formed on another member,” it may be directly disposed or formed on another member, or there may be other member therebetween. On the other hand, when a member is described as being “directly disposed or formed on another member,” no member exists therebetween. In addition, when a member is described as being “disposed or formed on another member,” the two have a vertical relationship in the top view direction, and this member may be located above or below the other member, and the vertical relationship depends on the device orientation. 
     It should be understood that when a member or a layer is described as being “connected to” another member or layer, it may be directly connected to this member or layer, or there may be an intervening member or layer therebetween. When a member is described as being “directly connected to” another member or film layer, no intervening member or layer exists therebetween. In addition, when a member is described as being “coupled to another member (or a variant thereof),” it may be directly connected to this member, or be indirectly connected (such as being electrically connected) to this member through one or more members. 
     Ordinal numbers in this specification and the claims such as “first” and “second” are used to modify a component, and do not imply or represent that the (or these) component(s) has (or have) any ordinal number, and do not indicate any order between a component and another component, or an order in a manufacturing method. These ordinal numbers are merely used to clearly distinguish a component having a name with another component having the same name. Different terms may be used in the claims and the specification, so that a first member in the specification may be a second member in the claims. 
     The terms “about,” “approximately,” “substantially,” and “roughly” referred to herein generally mean within a range of 10% of a given value, or mean within a range of 5%, 3%, 2%, 1%, or 0.5% of a given value. The given value herein is an approximate value, meaning that “about,” “approximately,” “substantially,” and “roughly” may be still implied without a specific description of “about,” “approximately,” “substantially,” and “roughly.” In addition, the phrases “a range from a first value to a second value” and “a range between a first value to a second value” indicate the range includes the first value, the second value, and other values therebetween. 
     The electrical connections or couplings described in the disclosure may all refer to direct connections or indirect connections. In the case of the direct connection, terminals of components on two circuits are directly connected or connected through a conductive line, and in the case of the indirect connection, between the terminals of the components on the two circuits are a switch, a diode, a capacitor, an inductor, a resistor, other suitable components, or a combination of the above components, but the disclosure is not limited thereto. 
     In the disclosure, the thickness, length, and width may be measured with an optical microscope, and the thickness or width may be measured with a cross-sectional image in an electron microscope, but the disclosure is not limited thereto. In addition, any two values or directions used for comparison may have a certain error. 
     It should be understood that the following embodiments may disassemble, replace, reorganize, and mix the features in several different embodiments to complete other embodiments without departing from the spirit of the disclosure. As long as the features of the embodiments do not violate the spirit of the disclosure or conflict each other, they may be mixed and matched as desired. 
       FIG. 1  is a schematic diagram of a light emitting device according to an embodiment of the disclosure. A light emitting device  100  in  FIG. 1  includes a substrate  110  and multiple pixels  120 . The substrate  110  may have a circuit (not illustrated), and these pixels  120  are, for example, arranged into an array along an X axis and a Y axis on the substrate  110 , but the disclosure is not limited thereto. A pixel  120  may include multiple sub-pixels  122 . In some embodiments, a sub-pixel  122  includes a light emitting component, such as a light emitting diode. The light emitting diode may include, for example but not limited to, an organic light emitting diode (OLED), a mini light emitting diode (mini LED), a micro light emitting diode (micro LED), or a quantum dot (QD) light emitting diode (QLED or QDLED), fluorescence, phosphors, or other suitable materials, and a combination thereof. In some embodiments, the light emitting component may be a light emitting chip, and the sub-pixels  122  may be coupled to the substrate  110  in a chip-on-board (COB) form, which means light emitting chips as the sub-pixels  122  may be electrically connected to the circuit on the substrate  110 . In some embodiments, a sub-pixel  122  may include a light emitting chip as the light emitting component and a package material for encapsulating the light emitting chip, and a sub-pixel  122  may be coupled to the substrate  110  in a package-on-board (POB) form. In some embodiments, multiple sub-pixels  122  of one single pixel  120  may be encapsulated in the same package structure by the package material and may be coupled to the substrate  110  in the POB form. In addition, although a pixel  120  in this embodiment includes three sub-pixels  122  for exemplification, the disclosure is not limited thereto. In other embodiments, the amount of the sub-pixels  122  that a pixel  120  may have is 2, 3, 4, 5, or other numbers. 
       FIG. 2  is a schematic cross-sectional diagram of the light emitting device of  FIG. 1  taken along a line I-I′. Specifically, the cross-sectional structure presented in  FIG. 2  may be applied to one or more pixels  120  in  FIG. 1 , or even to all the pixels  120  in the light emitting device  100 . As shown in  FIG. 2 , in the light emitting device  100 , a pixel  120  includes three sub-pixels  122 , and the three sub-pixels  122  are disposed on the substrate  110 . In this embodiment, the light emitting device  100  further includes a conductive bonding material  130 , and a sub-pixel  122  may be coupled to the substrate  110  through the conductive bonding material  130 . In this embodiment, the conductive bonding material  130  may be a conductive solder, such as an alloy solder. In other embodiments, the conductive bonding material  130  may include a wire bonding material. 
     The substrate  110  may be a circuit board, an active component substrate, or other plate-shaped structure that may be used to provide driving signals and/or power to the sub-pixels  122  and may support the sub-pixels  122 . In some embodiments, when the substrate  110  is a circuit board, the substrate  110  may include multiple conductive circuit layers and multiple insulating layers that an insulating layer is used for separating the two adjacent conductive circuit layers, but the disclosure is not limited thereto. Specifically, the substrate  110  includes pads  112  for being electrically connected to the sub-pixels  122 , and the pads  112  are located on the surface of the substrate  110  facing the sub-pixels  122 . At the same time, an electrode E 122  are disposed on the chip D 122  of a sub-pixel  122 , and the electrode E 122  is located on the surface of a sub-pixel  122  facing the substrate  110 , but the disclosure is not limited thereto. A sub-pixel  122  may be coupled to the corresponding pad  112  on the substrate  110  through the conductive bonding material  130 . In some embodiments, the sub-pixel  122  is, for example, a light emitting diode, and the sub-pixel  122  has a pair of electrodes. However,  FIG. 2  only schematically shows an example that one electrode is coupled to the substrate  110 , and the other electrode coupled to the substrate  110  may have a structure similar to that shown in  FIG. 2 . 
     The sub-pixels  122  are, for example, manufactured in advance before being coupled to the substrate  110 . The method of coupling the sub-pixels  122  may include, for example, placing the manufactured sub-pixels  122  (such as light emitting diodes) on the substrate  110 , the conductive bonding materials  130  exist between the sub-pixels  122  and the substrate  110 , and the coupling the sub-pixels  122  and the substrate  110  through a bonding step. It should be noted that, in the disclosure, the bonding step may include, for example but not limited to, welding, anisotropic conductive adhering, or eutectic bonding. In addition, there may be errors during coupling the sub-pixels  122 . For example, the sub-pixels  122  may tilt during coupling, which causes that the main light emitting directions of the sub-pixels  122  are not always parallel to the normal direction of the substrate (such as a Z axis in  FIG. 2 ) or the positions of some sub-pixels  122  may be shifted during coupling, such that the distances between two adjacent sub-pixels  122  may be different. At this time, due to the tilting of the sub-pixels  122  or the different distances D, the part of light which is emitted from a sub-pixel  122  and is blocked by the adjacent sub-pixels  122  may vary, it results in that greater luminance loss at a large angle occurs in some sub-pixels  122 , or it leads to worse light emitting performance. For example, if more part of the light emitted from a blue sub-pixel  122  in one pixel  120  is blocked, when a user views the light emitting device at a large angle, the light emitting color of that pixel  120  may look reddish or greenish since more blue light is blocked. It should be noted that in the disclosure, the distance D may be defined as the minimum distance between two adjacent sub-pixels  122  measured along the arrangement direction of the sub-pixels  122  (for example, the Y axis in  FIG. 2 ). 
     According to the above description, among the pixels  120 , when the aforementioned light blocking occurs in the sub-pixels  122  of the same color, a color shift may happen, and the color shift becomes relatively obvious at a large angle. For example, when light blocking occurs in all the blue sub-pixels, then the light emitting color may be reddish or greenish. In addition, although the relatively small distance D may achieve higher resolution, the light emitting performance may not be ideal. However, the larger the distance D, the smaller the resolution that may be provided. Therefore, the distance D may affect the light emitting performance of the light emitting device  100 . 
     A sub-pixel  122  has a height, and the height of the sub-pixel  122  may be, for example, the minimum distance between the surface of the chip D 122  away from the substrate  110  and the surface of the electrode E 122  facing the substrate  110 . The larger the height, the more obvious the situation of blocking other adjacent sub-pixels  122  may be. In order to balance the resolution and display quality, in this embodiment, the distance between two adjacent sub-pixels  122  and the height of the two adjacent sub-pixels  122  in the pixel  120 , for example, satisfy a relational expression: 0.3H&lt;D≤30H, where D is the distance between two adjacent sub-pixels  122  and H is the height of at least one sub-pixel  122 . If the heights of the two adjacent sub-pixels  122  are different, then the height H is defined as the height of the higher sub-pixel  122 . D and H are expressed in the same unit, such as cm, mm, μm, or other length units. In some embodiments, the distance D and the height H, for example, satisfy a relational expression: 0.3H&lt;D≤3H. In some embodiments, D may be 0.6H, 0.8H, 0.9H, 1.2H, 2H, 2.5H, or the like. In some embodiments, the distance D that is greater than 0.3 times of the height H (i.e., 0.3H&lt;D) may reduce that the light emitted from a sub-pixel  122  is blocked by an adjacent sub-pixel  122  at a large viewing angle θ1. The viewing angle θ1 may be an intersection angle between a viewing direction DW and the normal direction of the substrate (such as the Z axis in  FIG. 2 ), and the viewing angle θ1 is, for example, greater than or equal to 30 degrees (i.e., θ1≥30°). Therefore, the color shift of the light emitting device  100  at a large angle may be reduced, and a good light emitting performance may be provided. 
     Hereinafter, in conjunction with  FIG. 1 , two adjacent pixels  120 , namely a first pixel  120 A and a second pixel  120 B, are used to illustrate the layout of these pixels  120 , but the disclosure is not limited thereto. Both the first pixel  120 A and the second pixel  120 B are disposed on the substrate  110 , and the first pixel  120 A and the second pixel  120 B are disposed adjacent to each other. For example, the first pixel  120 A and the second pixel  120 B are disposed adjacent to each other in the direction of the X axis, and the first pixel  120 A and the second pixel  120 B respectively include multiple sub-pixels  122 . In this embodiment, a sub-pixel  122  may have a rectangular profile, and the sub-pixel  122  is oriented to have a width in a first direction R 1  smaller than a length in a second direction R 2 , but the disclosure is not limited thereto. In this embodiment, the first direction R 1  may be parallel to the Y axis and be a direction from a first side  110 S 1  of the substrate  110  to a second side  110 S 2  of the substrate  110 , and the second direction R 2  may be parallel to the X axis and be a direction from a third side  110 S 3  of the substrate  110  to a fourth side  110 S 4  of the substrate  110 , but the disclosure is not limited thereto. In some embodiments, the first direction R 1  and the second direction R 2  may respectively be parallel to the X axis direction and the Y axis direction. In some embodiments, the sub-pixel  122  may have a square profile, a circular profile, and a profile in other geometric shapes. 
     The amounts of the sub-pixels  122  included in the first pixel  120 A and the second pixel  120 B are the same. For example, the first pixel  120 A includes three sub-pixels  120 , and the second pixel  120 B also includes three sub-pixels  120 . In some embodiments, the three sub-pixels  120  of the first pixel  120 A have different light emitting colors, and the three sub-pixels  120  of the second pixel  120 B also have different light emitting colors. In this embodiment, the three sub-pixels  120  of the first pixel  120 A may be a first color sub-pixel  122 A, a second color sub-pixel  122 B, and a third color sub-pixel  122 C, and the three sub-pixels  120  of the second pixel  120 B may be the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C. In some embodiments, the first sub-pixel  122 A, the second sub-pixel  122 B, and the third sub-pixel  122 C have different light emitting colors, such as being a red sub-pixel, a blue sub-pixel, and a green sub-pixel, but the disclosure is not limited thereto. In other embodiments, the light emitting colors of the sub-pixels  122  may include red, green, blue, yellow, cyan, and other colors. In some embodiments, the sub-pixel  122  may include a light emitting component (such as a light emitting diode), and the light emitting color of the sub-pixel  122  may be determined by the light emitting component. In other embodiments, in addition to the light emitting component, the sub-pixel  122  may further include a light conversion component (such as a quantum dot layer) and/or a color filter component, and the light emitting color of the sub-pixel  122  is determined by one or more of the light emitting component, the light conversion component, and the color filter component. In some embodiments, all the pixels  120  of the light emitting device  100  may have the same amount of the sub-pixels  122 , but the disclosure is not limited thereto. 
     In  FIG. 1 , multiple sub-pixels in all pixels are arranged along the first direction, for example, the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C of the first pixel  120 A are arranged in a sequence along the first direction R 1 . In other words, in the first pixel  120 A, the second color sub-pixel  122 B is located between the first color sub-pixel  122 A and the third color sub-pixel  122 C. The first color sub-pixel  122 A is adjacent to the first side  110 S 1  of the substrate  110 , and the third color sub-pixel  122 C is adjacent to the second side  110 S 2  of the substrate  110 , wherein the first side  110 S 1  and the second side  110 S 2  are opposite to each other. In addition, the third color sub-pixel  122 C, the second color sub-pixel  122 B, and the first color sub-pixel  122 A of the second pixel  120 B are arranged in a sequence along the first direction R 1 . In other words, in the second pixel  120 B, the second color sub-pixel  122 B is located between the first color sub-pixel  122 A and the third color sub-pixel  122 C. The third color sub-pixel  122 C is adjacent to the first side  110 S 1  of the substrate  110 , and the first color sub-pixel  122 A is adjacent to the second side  110 S 2  of the substrate  110 . 
     Therefore, in  FIG. 1 , multiple sub-pixels  122  of the first pixel  120 A are arranged in a first color sequence along the first direction R 1 , and multiple sub-pixels  122  of the second pixel  120 B are arranged in a second color sequence along the first direction R 1 , and the first color sequence is different from the second color sequence. A color sequence refers to an order of light emitting colors of the sequentially arranged sub-pixels  122 . For example, the first color sequence is red-green-blue, and the second color sequence is blue-green-red. In this way, the light emitting device  100  is less prone to a color shift of the emitted light at a large angle. For example, when the light emitting device  100  is viewed at a large angle near the first side  110 S 1 , the first color sub-pixel  122 A of the first pixel  120 A is closer to a viewer, while the third color sub-pixel  122 C is farther from the viewer. At the same time, the third color sub-pixel  122 C of the second pixel  120 B is closer to the viewer, while the first color sub-pixel  122 A is farther from the viewer. Assuming that the aforementioned light blocking occurs in the sub-pixels  122  farther from the viewer at a large angle, then more part of the light emitted from the third color sub-pixel  122 C is blocked in the first pixel  120 A, and more part of the light emitted from the first color sub-pixel  122 A is blocked in the second pixel  120 B. In this way, the overall light emitting color of the light emitting device  100  is not easily shifted toward the color of the first color sub-pixel  122 A, nor is it easily shifted toward the color of the third color sub-pixel  122 C. In other words, the potential color shift of the light emitting device  100  may be reduced. 
     In this embodiment, when three sub-pixels  122  in one single pixel  120  are respectively a red sub-pixel, a green sub-pixel, and a blue sub-pixel, then the sub-pixels may be arranged by selecting, for example, one of the following color sequences: red-green-blue, blue-green-red, red-blue-green, green-blue-red, green-red-blue, and blue-red-green, and are not limited to the color sequence shown in  FIG. 1 . In some embodiments, any two of the above color sequences may be selected to implement the arrangement of sub-pixels in two adjacent ones among multiple pixels  120 , which helps reduce or improve the color shift of the light emitting device  100 . Therefore, the light emitting device  100  may provide a good light emitting performance. In some embodiments, in addition to adopting different color sequences to implement the arrangement of the sub-pixels in the adjacent pixels  120 , adjusting a drive control signal may further reduce or improve the color shift of the light emitting device  100 . For example, after the manufacturing of the light emitting device  100  is completed, the light emitting performance of the light emitting device  100  may be detected. If a color shift is detected at a large angle, a suitable algorithm may be used to estimate the extent to which the light emitting intensity of the individual sub-pixel  122  should be adjusted, such that the adjusted drive control signal is used to improve the color shift. The drive control signal may be completed in the calibration procedure before a product leaves the factory, but the disclosure is not limited thereto. 
     In some embodiments, the pixels  120  of the light emitting device  100  may be divided into different pixel groups according to the sub-pixel arrangement. For example, in  FIG. 1 , the pixels  120  of the light emitting device  100  may be divided to include a first pixel group G 1  and an adjacent second pixel group G 2 , with the first pixel group G 1  and the second pixel group G 2  arranged in two adjacent columns in the Y axis direction, but the disclosure is not limited thereto. A same color sequence may be used to arrange the sub-pixels  122  in each pixel  120  in the first pixel group G 1 , such as arranging the sub-pixels in the first color sequence (red-green-blue arranged along the first direction R 1 ), which is the same as the first pixel  120 A. At the same time, another color sequence may be used to arrange the sub-pixels  122  in each pixel  120  in the second pixel group G 2 , such as arranging the sub-pixels in the second color sequence (blue-green-red arranged along the first direction R 1 ), which is the same as the second pixel  120 B. In other words, pixels in adjacent pixel groups arrange sub-pixels in different color sequences, but pixels in the same pixel group arrange sub-pixels in the same color sequence. However, the layout and arrangement of the pixels  120  shown in  FIG. 1  is merely exemplary. In other embodiments, a pixel group may be composed of the pixels  120  arranged in the same row in the X axis direction. In addition, pixels in a pixel group are not limited to being arranged in the same line. In some embodiments, a pixel group may include 2, 4, 6, 9, 16, or other amounts of pixels  120 , and the pixels in a pixel group may be arranged in a row, arranged in a column, arranged into an array, arranged to form a triangle, or arranged in other ways. 
       FIG. 3  is a schematic diagram of a light emitting device according to an embodiment of the disclosure. A light emitting device  100 ′ of  FIG. 3  is similar to the light emitting device  100  of  FIG. 1 . In the light emitting device  100 ′ of  FIG. 3 , the first pixel  120 A and the second pixel  120 B adjacent in the X axis direction have the sub-pixels  122  arranged in different color sequences. At the same time, the first pixel  120 A and a third pixel  120 B′ adjacent in the Y axis direction also have the sub-pixels  122  arranged in different color sequences. Specifically, in the light emitting device  100 ′ of  FIG. 3 , the designs of the first pixel  120 A and the second pixel  120 B are respectively the same as those described in  FIG. 1 , while the three sub-pixels  122  of the third pixel  120 B′ adjacent to the first pixel  120 A have a different arrangement sequence of light emitting colors. 
     For example, in the first pixel  120 A, the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C are arranged in a sequence along the first direction R 1 , and in the second pixel  120 B′, the third color sub-pixel  122 C, the second color sub-pixel  122 B, and the first color sub-pixel  122 A are arranged in a sequence along the first direction R 1 . In this way, the color sequence of the first pixel  120 A is different from that of the second pixel  120 B adjacent in the X axis and that of the third pixel  120 B′ adjacent in the Y axis. In addition, it is exemplary that the color sequence of the second pixel  120 B is the same as that of the third pixel  120 B′ in this embodiment, but the disclosure is not limited thereto. In other embodiments, the color sequences of the second pixel  120 B and the third pixel  120 B′ may be different. For example, the sub-pixels of a pixel  120  may be arranged by selecting one of the following color sequences: red-green-blue, blue-green-red, red-blue-green, green-blue-red, green-red-blue, and blue-red-green. 
       FIG. 4  is a schematic diagram of a light emitting device according to an embodiment of the disclosure. A light emitting device  200  in  FIG. 4  includes the substrate  110  and multiple pixels  220 . A pixel  220  includes multiple sub-pixels  122 , and the sub-pixels  122  may respectively be the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C according to light emitting colors, but the disclosure is not limited thereto. The structure and relevant configuration of the substrate  110 , the sub-pixels  122 , the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C in  FIG. 4  may be referred to  FIG. 1  and  FIG. 2 . The difference between the embodiment in  FIG. 4  and the embodiment in  FIG. 1  will be described as follows. However, the disclosure does not exclude adding the features of  FIG. 1 ,  FIG. 2 , and/or  FIG. 3  to the embodiment of  FIG. 4 . 
     In this embodiment, as shown in  FIG. 4 , the three sub-pixels  122  in a first pixel  220 A are the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C, with the first color sub-pixel  122 A and the second color sub-pixel  122 B, and the third color sub-pixel  122 C arranged in a sequence along the first direction R 1 . In this embodiment, the first direction R 1  may be parallel to the Y axis and be a direction from the first side  110 S 1  of the substrate  110  to the second side  110 S 2  of the substrate  110 , but the disclosure is not limited thereto. 
     A second pixel  220 B adjacent to the first pixel  220 A in the X axis direction includes the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C. The third color sub-pixel  122 C, the second color sub-pixel  122 B, and the first color sub-pixel  122 A of the second pixel  220 B are arranged in order along the second direction R 2 . In this embodiment, the second direction R 2  is different from the first direction R 1 . For example, the second direction R 2  may be parallel to the X axis and be a direction from the third side  110 S 3  of the substrate  110  to the fourth side  110 S 4  of the substrate  110 , but the disclosure is not limited thereto. Herein, the first direction R 1  and the second direction R 2  are respectively parallel to the Y axis and the X axis, but the disclosure is not limited thereto. In some embodiments, the first direction R 1  and the second direction R 2  are two different directions. For example, an intersection angle between the first direction R 1  and the second direction R 2  may be from greater than 0 degrees to less than 180 degrees (0 degrees&lt;intersection angle&lt;180 degrees), such as 60 degrees, 90 degrees, 120 degrees, or the like, but the disclosure is not limited thereto. It should be noted that the intersection angle between the first direction R 1  and the second direction R 2  may be defined as an angle measured counterclockwise from a first imaginary line extending along the first direction R 1  to a second imaginary line extending along the second direction R 2  when the first imaginary line and the second imaginary line intersect each other. 
     In addition, the pixel  220  adjacent to the first pixel  220 A in the Y axis direction is referred to herein as a third pixel  220 B′. The first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C included in the third pixel  220 B′ may be arranged in a sequence along a third direction R 2 ′. Herein, the third direction R 2 ′ is different from the first direction R 1 , and the third direction R 2 ′ may be parallel to the second direction R 2 , but the disclosure is not limited thereto. For example, the third direction R 2 ′ of this embodiment is parallel to the X axis direction and is a direction from the third side  110 S 3  of the substrate  110  to the fourth side  110 S 4  of the substrate  110 , but the disclosure is not limited thereto. In some embodiments, the third direction R 2 ′ of this embodiment may also be different from both the first direction R 1  and the second direction R 2 . As shown in  FIG. 4 , in this embodiment, the first sub-pixel  122 A, the second sub-pixel  122 B, and the third sub-pixel  122 C of the third pixel  220 B′ are arranged in a color sequence different from that of the second pixel  220 B along the third direction R 2 ′. However, the disclosure is not limited thereto. In some embodiments, the second pixel  220 B and the third pixel  220 B′ may respectively have the sub-pixels arranged in the same color sequence. 
     The pixel  220  adjacent to the third pixel  220 B′ in the X axis direction may be referred to as a fourth pixel  220 A′. The fourth pixel  220 A′ may include three sub-pixels  122 , such as the first color sub-pixel  122 A, the second color sub-pixel  122 B, and the third color sub-pixel  122 C. In the fourth pixel  220 A′, the third color sub-pixel  122 C, the second color sub-pixel  122 B, and the first color sub-pixel  122 A are arranged in a sequence along a fourth direction R 1 ′. Herein, the fourth direction R 1 ′ is different from both the second direction R 2  and the third direction R 2 ′, and the fourth direction R 1 ′ may be parallel to the first direction R 1 . For example, the fourth direction R 1 ′ may be parallel to the Y axis direction and be a direction from the first side  110 S 1  of the substrate  110  to the second side  110 S 2  of the substrate  110 , but the disclosure is not limited thereto. In some embodiments, the fourth direction R 1 ′ may be different from the first direction R 1 , the second direction R 2 , and the third direction R 2 ′. In this embodiment, the sub-pixels  122  of the first pixel  220 A and the sub-pixels  122  of the fourth pixel  220 A′ may be arranged in different color sequences. However, in some embodiments, the fourth pixel  220 A′ may have the same color sequence for arrangement as the first pixel  220 A does. 
     In this embodiment, the first pixel  220 A and the second pixel  220 B adjacent in the X axis direction have sub-pixels arranged in different color sequences, as well as the third pixel  220 B′ and the fourth pixel  220 A′ adjacent in the X axis direction have sub-pixels arranged in different color sequences. In addition, the first pixel  220 A and the third pixel  220 B′ adjacent in the Y axis direction have sub-pixels arranged in different color sequences, as well as the second pixel  220 B and the fourth pixel  220 A′ adjacent in the Y axis direction also have sub-pixels arranged in different color sequences. This helps reduce the color shift problem caused by adopting one single sub-pixel arrangement direction and/or one color sequence in a light emitting device  200 . Therefore, the light emitting device  200  may provide a good light emitting performance. In some embodiments, the first pixel  220 A and the fourth pixel  220 A′ may have sub-pixels arranged in the same color sequence or different color sequences. Similarly, the second pixel  220 B and the third pixel  220 B′ may have sub-pixels arranged in the same color sequence or different color sequences. 
     In other embodiments, the pixels  220  may be divided into multiple pixel groups. A pixel group may include multiple adjacent pixels  220 , and a pixel  220  in one of two adjacent pixel groups may have the arrangement of the sub-pixels  122  by selecting the sub-pixel arrangement of one of the first pixel  220 A and the fourth pixel  220 A′, while a pixel  220  in the other pixel group may have the arrangement of the sub-pixels  122  by selecting the sub-pixel arrangement of one of the second pixel  220 B and the third pixel  220 B′, but the disclosure is not limited thereto. In some embodiments, multiple pixels  220  in the light emitting device  200  may have two or more sub-pixel arrangements. Therefore, there may be an aspect where two adjacent pixels  220  belong to the same pixel group have the same sub-pixel arrangement but another two adjacent pixels  220  belong to different pixel groups have different sub-pixel arrangements. In other words, the disclosure does not limit all the pixels  220  to having color sequences different from those of their adjacent pixels  220 . 
       FIG. 5  is a schematic diagram of an electronic device according to an embodiment of the disclosure. In  FIG. 5 , multiple light emitting devices  100 ′ are tiled together to form an electronic device  300 . A light emitting device  100 ′ includes multiple pixels  120 , and a pixel  120  includes multiple sub-pixels  122 . Since the structure and configuration of the light emitting device  100 ′ mat be referred to the embodiment in  FIG. 3 , and details are not repeated in this embodiment. Two adjacent pixels  120  in a light emitting device  100 ′ may have different sub-pixel arrangements, and the sub-pixels  122  in the electronic device  300  may be arranged as the sub-pixel arrangement shown in  FIG. 3 , but the disclosure is not limited thereto. For example, in some embodiments, the sub-pixels  122  in the electronic device  300  may optionally adopt the sub-pixel arrangement shown in  FIG. 1  or  FIG. 4 . 
     In this embodiment, a sub-pixel  122  has, for example, a rectangular shape. Among the sub-pixels  122 , at least one of the two adjacent sub-pixels  122  has a width W in the sub-pixel arrangement direction (exemplified by the first direction R 1  parallel to the Y axis in  FIG. 5 ) and has a length L in another direction vertical to the sub-pixel arrangement direction (exemplified by the second direction R 2  parallel to the X axis in  FIG. 5 ), with the length L greater than the width W, but the disclosure is not limited thereto. It should be noted that the width of the sub-pixel  122  may be defined as the maximum width obtained by measuring the profile of the sub-pixel  122  in the sub-pixel arrangement direction (such as the first direction R 1 ). If the two adjacent sub-pixels have different widths, then the larger one is defined as the width W. The length L may be defined as the maximum length obtained by measuring a sub-pixel  122  in a length measurement direction (such as the second direction R 2 ). In addition, in the same pixel  120 , the width W in two adjacent sub-pixels and the distance D between the two adjacent sub-pixels  122  may be in a relation where D is between 0.3W and 1.5W (0.3W≤D≤1.5W), with the distance D and the width W measured in the same direction (such as the first direction R 1  parallel to the Y axis), but the disclosure is not limited thereto. For example, in some embodiments, D may be 0.5W, 0.8W, 1.2W, or the like. In some embodiments, the sub-pixel  122  includes a light emitting component, such as a light emitting diode. In some embodiments, the sub-pixel  122  includes a light emitting component and a package material encapsulating the light emitting component, and the width W and the length L are referred to the size obtained by measuring the profile of the light emitting component. When multiple light emitting devices  100 ′ are tiled together to form the electronic device  300 , the design with D between 0.3W and 1.5W helps provide a good light emitting performance. In other embodiments, the extension direction of the length L of the sub-pixel  122  may be parallel to the Y axis direction, or the extension direction of the length L may be different from both the X axis and the Y axis. 
     In summary, the light emitting device in the embodiments of the disclosure includes multiple pixels. Among multiple sub-pixels of a pixel, the distance between two adjacent sub-pixels is greater than 0.3 times of the height of one of the two adjacent sub-pixels. In this way, the light emitted from the sub-pixels is not prone to being blocked by the adjacent sub-pixels at a large angle, or it helps reduce or improve the potential color shift problem of the light emitting device. In addition, the pixels adjacent may have sub-pixel arrangements in different color sequences or have different sub-pixel arrangement directions. In this way, if a color shift occurs in a pixel at a large angle, because the adjacent pixels may have different sub-pixels arrangement direction or have sub-pixels arranged in a different color sequences, the adjacent pixels may have different color shifts (i.e., the light emitting color shifts to a different color) in the same large angle, which helps improve the overall light emitting color of the light emitting device. Therefore, the light emitting device may have a good light emitting performance and is not prone to an obvious color shift. For example, if a reddish color shift occurs in a pixel at a large angle, pixels adjacent thereto may have a bluish color shift at the same angle, so the overall light emitted from the light emitting device may not have an obvious reddish or bluish color shift. 
     Finally, it should be noted that: the above embodiments are only used to illustrate technical solutions of the disclosure and are not intended to limit the disclosure. Although the disclosure has been described in detail with reference to the above embodiments, people of ordinary skill in the art should understand that they may still modify the technical solutions described in the above embodiments, replace or combine some or all of the technical features therein with equivalents, and such modifications, replacements or combination of corresponding technical solutions do not substantially deviate from the scope of the technical solutions of the embodiments of the disclosure.