Display substrate, display panel and display device

Abstract

The display substrate, the display panel and the display device provided by the present disclosure comprise a substrate (101), a driving circuit layer and a light device layer arranged on the substrate (101) in sequence, wherein the display area (AA) of the substrate (101) comprises a first display area (AA1) and a second display area (AA2) located at least on one side of the first display area (AA1), the light transmittance of the first display area (AA1) is greater than that of the second display area (AA2); the driving circuit layer comprises a plurality of first pixel circuits (102) in the frame area (BB) around the display area (AA) and a plurality of second pixel circuits (103) in the second display area (AA2); the light device layer comprises a plurality of first light devices (104) in the first display area (AA1) and a plurality of second light devices (105) in the second display area (AA2); each of the plurality of first light devices (104) is electrically connected to each of the plurality of first pixel circuits (102) respectively, and each of the plurality of second light devices (105) is electrically connected to each of the plurality of second pixel circuits (103) respectively; the density of the plurality of first light devices (104) in the first display area (AA1) is the same as that of the plurality of second light devices (105) in the second display area (AA2).

Description

[0001] Cross-references to related applications

[0002] This disclosure claims priority to PCT patent application filed with the Chinese Patent Office on September 24, 2020, with application number PCT / CN2020 / 117373 and title "Display Panel, Display Device and Preparation Method", the contents of which are incorporated herein by reference in whole or in part. Technical Field

[0003] This disclosure relates to the field of display technology, and in particular to a display substrate, display panel and display device. Background Technology

[0004] With the rapid development of smartphones, there is a growing demand not only for aesthetically pleasing designs but also for a superior visual experience. Major manufacturers have begun increasing screen-to-body ratios, making full-screen displays a new competitive advantage. As full-screen displays evolve, the demand for improved performance and functionality also grows. Under-display cameras, without compromising a high screen-to-body ratio, can deliver a more immersive visual and user experience. Summary of the Invention

[0005] On one hand, embodiments of this disclosure provide a display substrate, including:

[0006] The substrate includes a display area comprising: a first display area and a second display area located at least on one side of the first display area; wherein the light transmittance of the first display area is greater than the light transmittance of the second display area;

[0007] A driving circuit layer is located on the substrate; the driving circuit layer includes: a plurality of first pixel circuits located in a border area surrounding the display area, and a plurality of second pixel circuits located in the second display area;

[0008] A light-emitting device layer is located on the side of the driving circuit layer opposite to the substrate. The light-emitting device layer includes a plurality of first light-emitting devices located in the first display area and a plurality of second light-emitting devices located in the second display area. Each of the plurality of first light-emitting devices is electrically connected to each of the plurality of first pixel circuits, and each of the plurality of second light-emitting devices is electrically connected to each of the plurality of second pixel circuits. The density of the plurality of first light-emitting devices in the first display area is the same as the density of the plurality of second light-emitting devices in the second display area.

[0009] Optionally, in the display substrate provided in the embodiments of this disclosure, the plurality of first pixel circuits are located in the border area adjacent to the plurality of first light-emitting devices.

[0010] Optionally, in the display substrate provided in the embodiments of this disclosure, at least a portion of the plurality of first pixel circuits are arranged in a one-to-one correspondence with at least a portion of the plurality of second pixel circuits.

[0011] Optionally, in the display substrate provided in the embodiments of this disclosure, the driving circuit layer includes: a plurality of first data lines and a plurality of second data lines; wherein,

[0012] In the column direction, at least a portion of each of the first data lines overlaps with the first display area, and each of the first data lines is electrically connected to at least one column of the first pixel circuit.

[0013] In the column direction, at least a portion of each of the second data lines overlaps with the second display area, and each of the second data lines is electrically connected to a corresponding column of the second pixel circuit.

[0014] Optionally, in the display substrate provided in the embodiments of this disclosure, the driving circuit layer includes: a plurality of second data lines, wherein at least a portion of each second data line overlaps with the second display area in the column direction, and each second data line is electrically connected to at least one column of the first pixel circuit and one column of the second pixel circuit.

[0015] Optionally, in the display substrate provided in the embodiments of this disclosure, the driving circuit layer includes: a plurality of first data lines and a plurality of second data lines; wherein,

[0016] In the column direction, at least a portion of each of the first data lines overlaps with the first display area, and each of the first data lines is electrically connected to at least one column containing the first pixel circuit.

[0017] In the column direction, at least a portion of each of the second data lines overlaps with the second display area, and the plurality of second data lines are electrically connected to the columns where the plurality of second pixel circuits are located, respectively. The columns where the first pixel circuits are not electrically connected to the first data lines are electrically connected to the second data lines of the corresponding columns where the second pixel circuits are located.

[0018] Optionally, in the display substrate provided in the embodiments of this disclosure, the plurality of first data lines are bent along the edge of the first display area toward the side of the first pixel circuit that is away from or close to the second display area; or, the plurality of first data lines are bent along the edge of the first display area toward the side of the first pixel circuit that is away from or close to the first display area.

[0019] Optionally, in the display substrate provided in the embodiments of this disclosure, when a column of first pixel circuits and a corresponding column of second pixel circuits are arranged facing each other in the column direction, a second data line connecting a column of first pixel circuits and a column of second pixel circuits is a straight line extending in the column direction; or,

[0020] When a column of first pixel circuits and a corresponding column of second pixel circuits are staggered in the column direction of the second display area, the second data line connecting the column of first pixel circuits and the column of second pixel circuits includes a diagonal line; or,

[0021] When a column of first pixel circuits in the column direction of the first display area is correspondingly set with a column of second pixel circuits in the second display area, the second data line connecting the column of first pixel circuits and the column of second pixel circuits includes a broken line.

[0022] Optionally, in the display substrate provided in the embodiments of this disclosure, the driving circuit layer includes: a plurality of first shift register units cascaded in the border area, a plurality of second shift register units cascaded in the border area, a plurality of first control lines extending along the row direction, and a plurality of second control lines extending along the row direction in the second display area; wherein,

[0023] Each of the first shift register units is electrically connected to a row of the first pixel circuit via a first control line;

[0024] Each of the second shift register units is electrically connected to a row of the second pixel circuit via a second control line.

[0025] Optionally, in the display substrate provided in the embodiments of this disclosure, the first light-emitting device includes a first anode; the second light-emitting device includes a second anode; wherein,

[0026] When the emission color of the first light-emitting device is the same as that of the second light-emitting device, the projected area of ​​the first anode on the substrate is smaller than that of the second anode.

[0027] Optionally, in the display substrate provided in the embodiments of this disclosure, the ratio of the projected area of ​​the first anode corresponding to at least one of the same color on the substrate to the projected area of ​​the second anode is greater than or equal to 3 / 10 and less than or equal to 9 / 10.

[0028] Optionally, the display substrate provided in the embodiments of this disclosure further includes: a plurality of transparent conductive layers stacked and insulated from each other between the driving circuit layer and the light-emitting device layer, each of the transparent conductive layers including a plurality of transparent traces, each of the transparent traces being connected one-to-one between the first pixel circuit and the first light-emitting device.

[0029] Optionally, in the display substrate provided in the embodiments of this disclosure, the multiple transparent traces contained in each transparent conductive layer do not overlap with each other, and the orthographic projections of the multiple transparent traces contained in different transparent conductive layers on the substrate do not overlap or at least partially overlap with each other.

[0030] Optionally, in the display substrate provided in the embodiments of this disclosure, the plurality of transparent conductive layers include a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer that are stacked and insulating each other; wherein,

[0031] The first transparent conductive layer includes multiple first transparent traces, the second transparent conductive layer includes multiple second transparent traces, and the third transparent conductive layer includes multiple third transparent traces;

[0032] The plurality of first light-emitting devices include a plurality of first color light-emitting devices, a plurality of second color light-emitting devices, and a plurality of third color light-emitting devices;

[0033] The first pixel circuit includes a first sub-pixel circuit, a second sub-pixel circuit, and a third sub-pixel circuit;

[0034] One end of the first transparent trace is electrically connected to the first sub-pixel circuit, and the other end is electrically connected to the first color light-emitting device.

[0035] One end of the second transparent trace is electrically connected to the second sub-pixel circuit, and the other end is electrically connected to the corresponding second color light-emitting device.

[0036] One end of the third transparent trace is electrically connected to the third sub-pixel circuit, and the other end is electrically connected to the corresponding third color light-emitting device.

[0037] Optionally, in the display substrate provided in the embodiments of this disclosure, the first display area is configured to mount a light-collecting module.

[0038] On the other hand, this disclosure also provides a display panel including the above-described display substrate.

[0039] On the other hand, this disclosure also provides a display device, including: a light-collecting module and the above-mentioned display panel; wherein the light-collecting module is disposed in a first display area of ​​the display panel. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a display substrate structure in related technologies;

[0041] Figure 2 for Figure 1 A magnified structural diagram of region a in the middle;

[0042] Figure 3 This is a schematic diagram of a display substrate provided in an embodiment of the present disclosure;

[0043] Figure 4 for Figure 3 A magnified structural diagram of region d in the middle;

[0044] Figure 5 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0045] Figure 6 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0046] Figure 7 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0047] Figure 8 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0048] Figure 9 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0049] Figure 10 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0050] Figure 11 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0051] Figure 12 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0052] Figure 13 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0053] Figure 14 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0054] Figure 15 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0055] Figure 16 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0056] Figure 17 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0057] Figure 18 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0058] Figure 19 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0059] Figure 20 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0060] Figure 21 for Figure 3 Another enlarged structural diagram of region d in the middle;

[0061] Figure 22 for Figure 3 Another enlarged structural diagram of region d in the middle. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the dimensions and shapes of the figures in the drawings do not reflect actual proportions and are only intended to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. Obviously, the described embodiments are only some embodiments of this disclosure, not all embodiments. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0063] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure and the claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” and “lower” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0064] In related technologies, such as Figure 1 As shown, under-display camera technology typically sets up a first display area AA1 and a second display area AA2 within a display area AA, with the first display area AA1 located above the front-facing camera. Specifically, the first display area AA1 includes a camera-containing area b and a camera-free area c. The camera-free area c contains two types of circuits: a normal pixel P containing pixel circuit D and light-emitting device A; and a dummy pixel containing only pixel circuit D. The camera-containing area b only contains light-emitting device A, and the signal driving this light-emitting device A is derived from the dummy pixel. However, to ensure sufficient light transmittance in the camera-containing area b, a portion of the light-emitting device A needs to be removed, resulting in a lower resolution (PPI) for the first display area AA1 compared to the second display area AA2, which affects the overall display effect.

[0065] To address the aforementioned technical problems in related technologies, this disclosure provides a display substrate, such as... Figure 3 and Figure 4 As shown, it includes:

[0066] The substrate 101 has a display area AA including a first display area AA1 and a second display area AA2 located at least on one side of the first display area AA1; wherein the light transmittance of the first display area AA1 is greater than the light transmittance of the second display area AA2.

[0067] A driving circuit layer is located on the substrate 101; the driving circuit layer includes: a plurality of first pixel circuits 102 located in the border area BB surrounding the display area, and a plurality of second pixel circuits 103 located in the second display area AA2.

[0068] The light-emitting device layer is located on the side of the driving circuit layer opposite to the substrate 101. The light-emitting device layer includes a plurality of first light-emitting devices 104 located in the first display area AA1 and a plurality of second light-emitting devices 105 located in the second display area AA2. Each of the plurality of first light-emitting devices 104 is electrically connected to each of the plurality of first pixel circuits 102, and each of the plurality of second light-emitting devices 105 is electrically connected to each of the plurality of second pixel circuits 103. The density (i.e., resolution) of the plurality of first light-emitting devices 104 in the first display area AA is the same as the density of the plurality of second light-emitting devices 105 in the second display area AA2.

[0069] In the display substrate provided in the embodiments of this disclosure, only the first light-emitting device 104 exists in the first display area AA1 with high light transmittance, and the driving signal of the first light-emitting device 104 can be provided by the first pixel circuit 102 of the frame area BB. At the same time, the density of the first light-emitting device 104 in the first display area AA1 is the same as the density of the second light-emitting device 105 in the second display area AA2. Therefore, the adverse effects caused by the difference in resolution between the first display area AA1 and the second display area AA2 are avoided, and the overall display effect is improved.

[0070] It should be noted that, in this disclosure, the shape of the first display area AA1 can be... Figure 3 The square shown can also be a circle or other shapes; the specific design can be tailored to actual needs and is not limited here. The second display area AA2 can be as follows... Figure 3 The first display area AA1 is shown to surround its periphery; it may also partially surround the first display area AA1, for example, surrounding its left, lower, and right sides, with the upper boundary of the first display area AA1 coinciding with the upper boundary of the second display area AA2. Furthermore, in this disclosure, the first light-emitting device 104 and the second light-emitting device 105 refer to pixels actually used for displaying light emission, excluding dummy pixels. Specifically, a dummy pixel is a pixel that, although having a stacked structure consisting of an anode, a light-emitting layer (EL), and a cathode, is not used for emitting light because it is not connected to signal lines. Similarly, the first pixel circuit 102 and the second pixel circuit 103 are circuits used to connect the light-emitting pixels.

[0071] Optionally, in the display substrate provided in the embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, multiple first pixel circuits 102 are located in the border area BB adjacent to multiple first light-emitting devices 104. Figure 3 and Figure 4 Specifically, multiple first pixel circuits 102 are shown located in the upper border area.

[0072] By placing multiple first pixel circuits 102 in a border area BB adjacent to multiple first light-emitting devices 104 and multiple second light-emitting devices 105, the length of the transparent trace between the first pixel circuit 102 and the first light-emitting device 104 can be effectively reduced, thereby reducing the resistance of the transparent trace and improving the long-range uniformity of the driving signal.

[0073] Optionally, in the display substrate provided in the embodiments of this disclosure, to further reduce the length of the transparent trace between the first pixel circuit 102 and the first light-emitting device 104 and reduce the resistance of the transparent trace, such as... Figures 4 to 21 As shown, at least some columns containing multiple first pixel circuits 102 can be configured in a one-to-one correspondence with at least some columns containing multiple second pixel circuits 103. Specifically, Figures 4 to 7 , Figures 12 to 15 The diagram shows a one-to-one correspondence between the columns containing multiple first pixel circuits 102 and the columns containing multiple second pixel circuits 103 on the left side of the first display area AA1; Figures 8 to 11 , Figures 16 to 21 The diagram shows a one-to-one correspondence between the columns containing multiple first pixel circuits 102 and the columns containing multiple second pixel circuits 103 on the left and bottom sides of the first display area AA1. Of course, in specific implementations, if the number of first light-emitting devices 104 is large, the number of first pixel circuits 102 electrically connected to each first light-emitting device 104 will also be large. In this case, the columns containing multiple first pixel circuits 102 will correspond one-to-one with all columns containing multiple second pixel circuits 103. Furthermore, if the space in the border area BB allows, not only can two rows of first pixel circuits 102 be set, but more than two rows of first pixel circuits 102 can also be set.

[0074] Optionally, in the display substrate provided in the embodiments of this disclosure, the first pixel circuit 102 can be loaded with a data signal in the following three ways.

[0075] The first possible implementation is as follows: Figure 4 and Figure 5 As shown, the driving circuit layer includes multiple first data lines 106 and multiple second data lines 107. In the column direction, at least a portion of each first data line 106 overlaps with a first display area AA1, and each first data line 106 is electrically connected to a corresponding column of first pixel circuits 102. In the column direction, at least a portion of each second data line 107 overlaps with a second display area AA2, and each second data line 107 is electrically connected to a corresponding column of second pixel circuits 103. That is, data signals are loaded into the first pixel circuits 102 by adding first data lines 106.

[0076] The second possible implementation is as follows: Figure 6 , Figure 7 , Figures 12 to 15 As shown, the driving circuit layer includes multiple second data lines 107. In the column direction, at least a portion of each second data line 107 overlaps with the second display area AA2, and each second data line 107 is electrically connected to a column of first pixel circuits 102 and a column of second pixel circuits 103. That is, data signals are directly introduced to the first pixel circuits 102 in that column by the second data lines 107 that are electrically connected to the second pixel circuits 103 in the corresponding column.

[0077] The third possible implementation is as follows Figures 8 to 11 , Figures 16 to 20 As shown, the driving circuit layer includes multiple first data lines 106 and multiple second data lines 107. In the column direction, at least a portion of each first data line 106 overlaps with the first display area AA1, and the multiple first data lines 106 are electrically connected to corresponding columns of multiple first pixel circuits 102. In the column direction, at least a portion of each second data line 107 overlaps with the second display area AA2, and the multiple second data lines 107 are electrically connected to corresponding columns of multiple second pixel circuits 103. The columns of first pixel circuits 102 not electrically connected to the first data lines 106 are electrically connected to the corresponding columns of second pixel circuits 103. That is, by adding first data lines 106, data signals are loaded for the first pixel circuits 102 adjacent to the first display area AA1, while the remaining first pixel circuits 102 are directly loaded with data signals by the second data lines 107 electrically connected to the second pixel circuits 103 in their corresponding columns.

[0078] It should be noted that, in this disclosure, a first data line 106 can be electrically connected to a column of first pixel circuits 102, such as... Figure 4 , Figure 5 , Figures 12 to 20 As shown; alternatively, a first data line 106 can be electrically connected to multiple columns of first pixel circuits 102, specifically... Figure 21 A first data line 106 is shown to be electrically connected to two columns of first pixel circuits 102. Additionally, when a second data line 107 is electrically connected to the first pixel circuit 102, the second data line 107 may be electrically connected to at least one column of first pixel circuits 102; this is not a limitation.

[0079] Optionally, in the display substrate provided in the embodiments of this disclosure, such as Figure 4 , Figure 12 and Figure 13 As shown, multiple first data lines 106 can be bent along the edge of the first display area AA1 toward the side of the first pixel circuit 102 away from the second display area AA2; or, as shown... Figure 5 , Figure 14 and Figure 15The multiple first data lines 106 shown can also be bent along the edge of the first display area AA1 toward the first pixel circuit 102 on the side away from the second display area AA2; or, as shown Figure 16 and Figure 17 As shown, the multiple first data lines 106 can also be bent along the edge of the first display area AA1 toward the side of the first pixel circuit 102 away from the first display area AA1; or, as shown... Figure 18 and Figure 19 As shown, multiple first data lines 106 can also be bent along the edge of the first display area AA1 toward the side of the first pixel circuit 102 closer to the first display area AA1.

[0080] Optionally, in the display substrate provided in the embodiments of this disclosure, the corresponding arrangement of a column of first pixel circuits 102 and a column of second pixel circuits 102 can specifically mean that a column of first pixel circuits 102 and a column of second pixel circuits 102 are electrically connected to the same second data line 107 and are positioned opposite each other or staggered. Optionally, when a column of first pixel circuits 102 and a column of second pixel circuits 102 are arranged opposite each other in the column direction, such as... Figure 6 , Figure 8 , Figure 10 , Figure 12 , Figure 14 , Figure 16 and Figure 18 A second data line 107 connecting a column of first pixel circuits 102 and a column of second pixel circuits 103 can be a straight line extending in the column direction. When the column of first pixel circuits 102 and the column of second pixel circuits 102 are staggered in the column direction of the second display area AA2, such as... Figure 7 , Figure 9 , Figure 11 , Figure 13 , Figure 15 , Figure 17 and Figure 19 As shown, the multiple second data lines 107 include diagonal lines. Specifically, the portion of a second data line 107 connecting to a column of first pixel circuits 102 is a straight line extending in the column direction; the portion connecting to a column of second pixel circuits 103 is a straight line extending in the column direction; and the portion connecting the column of first pixel circuits 102 and the column of second pixel circuits 103 is a diagonal line. In other words, the second data line 107 is a broken line extending approximately in the column direction. When a column of first pixel circuits 102 in the column direction of the first display area AA1 and a column of second pixel circuits 103 in the second display area AA2 are correspondingly arranged, as shown... Figures 8 to 11As shown, the portion of a second data line 107 connected to a column of first pixel circuits 102 is a straight line extending in the column direction, and the portion connected to a column of second pixel circuits 103 is also a straight line extending in the column direction. The portion connecting the column of first pixel circuits 102 and the column of second pixel circuits 103 is a broken line, for example, an approximately "Z"-shaped broken line. Of course, when a column of first pixel circuits 102 in the column direction of the first display area AA1 and a column of second pixel circuits 103 in the second display area AA2 are correspondingly arranged, such as... Figure 20 and Figure 21 As shown, the first data line 106, which overlaps with the second display area AA2, can also be used to load the data signal for the first pixel circuit 102; this is not a limitation here. Additionally, it should be noted that, as... Figure 4 and Figure 5 As shown, when the second data line 107 is only electrically connected to the second pixel circuit 103, the arrangement of the second data line 107 is the same as that of related technologies, specifically a straight line extending in the column direction.

[0081] Optionally, the first data line 106 and the second data line 107 may be formed from molybdenum, aluminum, silver, copper, titanium, platinum, tungsten, tantalum, tantalum nitride, their alloys and combinations thereof.

[0082] Optionally, in the display substrate provided in the embodiments of this disclosure, such as Figures 4 to 20 As shown, the driving circuit layer includes: a plurality of first shift register units 108 cascaded within the border region B, a plurality of second shift register units 109 cascaded within the border region B, a plurality of first control lines extending along the row direction, and a plurality of second control lines extending along the row direction within the second display area AA2; wherein,

[0083] Each first shift register unit 108 is electrically connected to a row of first pixel circuit 102 via a first control line;

[0084] Each second shift register unit 109 is electrically connected to a row of second pixel circuits 103 via a second control line;

[0085] The operating timing of the first pixel circuit 102, which is electrically connected to the first light-emitting device 104 in a row, corresponding to the first shift register unit 108, is the same as the operating timing of the second pixel circuit 103, which is electrically connected to the second light-emitting device 105 in the same row, corresponding to the second shift register unit 109, so that the first light-emitting device 104 and the second light-emitting device 105 in the same row emit light synchronously.

[0086] Optionally, in this disclosure, the control lines can be gate lines, reset signal lines, and light emission control signal lines (EM). These control lines provide corresponding signals through the newly added first shift register unit 108. Specifically, the gate lines, reset signal lines, and light emission control signal lines can be formed from molybdenum, aluminum, silver, copper, titanium, platinum, tungsten, tantalum, nickel, their alloys, and combinations thereof.

[0087] Optionally, in the display substrate provided in the embodiments of this disclosure, the light-emitting device A refers to the overlapping portion of the anode, the light-emitting (EL) functional layer, and the cathode. Specifically, the first light-emitting device 104 includes a first anode, and the second light-emitting device 105 includes a second anode. Generally, the first anode and the second anode are opaque. Therefore, in order to improve the light transmittance of the first display area AA1 where the first light-emitting device 104 is located, when the light-emitting colors of the first light-emitting device 104 and the second light-emitting device 105 are the same, the projected area of ​​the first anode on the substrate 101 can be set to be smaller than the projected area of ​​the second anode. Optionally, if the ratio of the projected area of ​​the first anode of at least one color on the substrate 101 to the projected area of ​​the second anode is greater than or equal to 3 / 10 and less than or equal to 9 / 10, it is equivalent to reducing the size of the first light-emitting device 104 to 90%-30% of the size of the second light-emitting device 105, for example, 90%, 80%, 70%, 60%, 50%, 40%, 30%, etc.

[0088] Optionally, the display substrate provided in the embodiments of this disclosure may further include: a plurality of transparent conductive layers stacked and insulated from each other between the driving circuit layer and the light-emitting device layer; each transparent conductive layer includes a plurality of transparent traces ( Figures 4 to 8 The image specifically shows multiple first transparent traces 110, multiple second transparent traces 111, and multiple third transparent traces 113 on the same layer. Each transparent trace is connected one-to-one between the first pixel circuit 102 and the first light-emitting device 104. Optionally, the transmittance of the transparent conductive layer can be between 40% and 100%, such as 40%, 50%, 60%, 70%, 80%, 90%, 100%, etc.

[0089] like Figure 2 As shown, in related technologies, since each transparent trace extending along the row direction has a certain width in the column direction, and the size of a pixel in the column direction is also fixed, the number of pixels per row in the first display area AA1 is limited. This disclosure employs multiple transparent conductive layers stacked and insulated from each other, allowing for more transparent traces to be provided within a certain size range in the column direction to drive more first light-emitting devices 104, thereby achieving the same resolution as the second display area AA1.

[0090] Optionally, in the display substrate provided in the embodiments of this disclosure, such as Figures 4 to 22 As shown, the multiple transparent traces contained in each transparent conductive layer do not overlap, and the orthographic projections of the multiple transparent traces contained in different transparent conductive layers on the substrate 101 do not overlap. Of course, since the different transparent conductive layers are mutually insulated, in specific implementations, the orthographic projections of the multiple transparent traces contained in different transparent conductive layers on the substrate 101 may partially overlap or completely overlap, which is not limited here.

[0091] Optionally, in the display substrate provided in the embodiments of this disclosure, to simplify the wiring design of the transparent conductive layer, such as... Figure 21 As shown, the multiple transparent conductive layers may include a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer that are stacked and insulated from each other; wherein, the first transparent conductive layer includes multiple first transparent traces 110, the second transparent conductive layer includes multiple second transparent traces 111, and the third transparent conductive layer includes multiple third transparent traces 112.

[0092] The plurality of first light-emitting devices 104 include a plurality of first color light-emitting devices R, a plurality of second color light-emitting devices G, and a plurality of third color light-emitting devices B;

[0093] The first pixel circuit 102 includes a first sub-pixel circuit, a second sub-pixel circuit, and a third sub-pixel circuit;

[0094] One end of the first transparent trace 110 is electrically connected to the first sub-pixel circuit, and the other end is electrically connected to the first color light-emitting device R.

[0095] One end of the second transparent trace 111 is electrically connected to the second sub-pixel circuit, and the other end is electrically connected to the corresponding second color light-emitting device G.

[0096] One end of the third transparent trace 112 is electrically connected to the third sub-pixel circuit, and the other end is electrically connected to the corresponding third color light-emitting device B.

[0097] Specifically, such as Figure 22As shown, multiple first-color light-emitting devices R, multiple second-color light-emitting devices G, and multiple third-color light-emitting devices B are arranged sequentially in a row direction. Multiple first transparent traces 110, multiple second transparent traces 111, and multiple third transparent traces 112 are electrically connected to the first pixel circuits 105, which are arranged sequentially in a row direction. Within two adjacent cycle periods, two first transparent traces 110 connected to two columns of first pixel circuits 102 are electrically connected to two adjacent columns of first-color light-emitting devices R. Within two adjacent cycle periods, two second transparent traces 111 connected to two columns of first pixel circuits 102 are electrically connected to two adjacent columns of second-color light-emitting devices G. Within two adjacent cycle periods, two third transparent traces 112 connected to two columns of first pixel circuits 102 are electrically connected to two adjacent columns of third-color light-emitting devices B.

[0098] Optionally, in the display substrate provided in the embodiments of this disclosure, such as Figure 1 As shown, the first display area AA1 is configured to install a light-collecting module, such as a camera module.

[0099] Compared to Figure 2 The related technologies shown include a first display area AA1 containing both a light-emitting device A and a pixel circuit D. Since only the light-emitting device A (i.e., the first light-emitting device 104) exists in the first display area AA1 in this disclosure, it can provide a larger area of ​​light transmission, which helps to adapt to larger camera modules.

[0100] Accordingly, this disclosure also provides a method for manufacturing the above-mentioned display substrate. Since the principle of this manufacturing method in solving the problem is similar to that of the above-mentioned display substrate in solving the problem, the implementation of the manufacturing method provided in this embodiment can refer to the implementation of the above-mentioned display substrate provided in this embodiment, and repeated details will not be described again.

[0101] Specifically, the method for manufacturing the display substrate provided in this embodiment may include the following steps:

[0102] The first step involves fabricating a driving circuit layer on a substrate 101. This driving circuit layer includes multiple first pixel circuits 102, multiple second pixel circuits 103, multiple first data lines 106, multiple second data lines 107, multiple first shift registers 108 cascaded together, multiple second shift registers 109 cascaded together, multiple first control lines (specifically including gate lines, reset signal lines, and light emission control signal lines), and multiple second control lines (specifically including gate lines, reset signal lines, and light emission control signal lines). Optionally, the first pixel circuits 102, second pixel circuits 103, first shift registers 108, and second shift registers 109 may include transistors and capacitors. In a specific implementation, an active layer (e.g., polysilicon), a gate insulating layer, the gate of each transistor, the first electrode plate of the capacitor, the first control line and the second control line of each transistor disposed on the same layer, the first insulating layer, the second electrode plate of the capacitor, the interlayer insulating layer, the source / drain of each transistor disposed on the same layer, the first data line 106 and the second data line 107 of each transistor disposed on the same layer can be formed sequentially on the substrate 101.

[0103] The second step involves sequentially forming a first insulating layer and a plurality of stacked and mutually insulated transparent conductive layers on the driving circuit layer. Optionally, the plurality of transparent conductive layers includes a first transparent conductive layer composed of a plurality of first transparent traces 110, a second transparent conductive layer composed of a plurality of second transparent traces 111, and a third transparent conductive layer composed of a plurality of third transparent traces 112. Specifically, to achieve mutual insulation between the transparent conductive layers, a second insulating layer may be formed after the formation of the first transparent conductive layer and before the formation of the second transparent conductive layer; and a third insulating layer may be formed after the formation of the second transparent conductive layer and before the formation of the third transparent conductive layer.

[0104] The third step involves sequentially forming a fourth insulating layer, multiple first anodes and multiple second anodes disposed on the same layer, a pixel defining layer, a light-emitting functional layer, a cathode, and an encapsulation layer on multiple transparent conductive layers. The multiple first anodes and multiple second anodes, the light-emitting functional layer, and the cathode constitute a light-emitting device layer. Specifically, the overlapping portions of the multiple first anodes, the light-emitting functional layer, and the cathode constitute multiple first light-emitting devices 104, and the overlapping portions of the multiple second anodes, the light-emitting functional layer, and the cathode constitute multiple second light-emitting devices 105.

[0105] On the other hand, this disclosure also provides a display panel, including the display substrate described above. Optionally, the display panel can be an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), or a micro LED display panel. Since the principle by which this display panel solves the problem is similar to that of the display substrate described above, the implementation of the display panel provided in this embodiment can refer to the implementation of the display substrate provided in this embodiment, and repeated details will not be described again.

[0106] On the other hand, this disclosure also provides a display device, including: a light-collecting module (e.g., a camera module) and the aforementioned display panel; wherein the light-collecting module is disposed in the first display area AA1 of the display panel. Optionally, the light-collecting module can be a camera module. The display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, smartwatch, fitness wristband, or personal digital assistant. Other essential components of the display device are understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting the present invention. Furthermore, since the principle by which this display device solves the problem is similar to that of the aforementioned display panel, the implementation of this display device can refer to the embodiments of the aforementioned display panel, and repeated details will not be elaborated upon.

[0107] The display substrate, display panel, and display device provided in this disclosure include: a substrate, the display area of ​​which includes a first display area and a second display area located at least on one side of the first display area; wherein the light transmittance of the first display area is greater than that of the second display area; a driving circuit layer located on the substrate; the driving circuit layer includes a plurality of first pixel circuits located in a border area surrounding the display area and a plurality of second pixel circuits located in the second display area; a light-emitting device layer located on the side of the driving circuit layer facing away from the substrate; the light-emitting device layer includes a plurality of first light-emitting devices located in the first display area and a plurality of second light-emitting devices located in the second display area; wherein each of the plurality of first light-emitting devices is electrically connected to each of the plurality of first pixel circuits, and each of the plurality of second light-emitting devices is electrically connected to each of the plurality of second pixel circuits; the density (i.e., resolution, PPI) of the plurality of first light-emitting devices in the first display area is the same as the density of the plurality of second light-emitting devices in the second display area. Since only the first light-emitting device exists in the first display area with high light transmittance, and the driving signal of the first light-emitting device can be provided by the first pixel circuit in the frame area, and the density of the first light-emitting device in the first display area is the same as the density of the second light-emitting device in the second display area, the adverse effects caused by the difference in resolution between the first display area and the second display area are avoided, thus improving the overall display effect.

[0108] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Therefore, if these modifications and variations to the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A display substrate, wherein, include: The substrate includes a display area comprising: a first display area and a second display area located at least on one side of the first display area; wherein the light transmittance of the first display area is greater than the light transmittance of the second display area; A driving circuit layer is located on the substrate; the driving circuit layer includes: a plurality of first pixel circuits located in a border area surrounding the display area, and a plurality of second pixel circuits located in the second display area; A light-emitting device layer is located on the side of the driving circuit layer opposite to the substrate. The light-emitting device layer includes a plurality of first light-emitting devices located in the first display area and a plurality of second light-emitting devices located in the second display area. Each of the plurality of first light-emitting devices is electrically connected to each of the plurality of first pixel circuits, and each of the plurality of second light-emitting devices is electrically connected to each of the plurality of second pixel circuits. The density of the plurality of first light-emitting devices in the first display area is the same as the density of the plurality of second light-emitting devices in the second display area. Also includes: Multiple transparent conductive layers are stacked and insulated from each other between the driving circuit layer and the light-emitting device layer. Each transparent conductive layer includes multiple transparent traces, and each transparent trace is connected one-to-one between the first pixel circuit and the first light-emitting device. One end of the transparent trace is located in the frame area and is electrically connected to the first pixel circuit. The other end of the transparent trace extends from the frame area to the second display area and from the second display area to the first display area, and is electrically connected to the first light-emitting device. The plurality of first pixel circuits are located in the frame area adjacent to the plurality of first light-emitting devices. At least a portion of the columns containing the plurality of first pixel circuits are arranged in a one-to-one correspondence with at least a portion of the columns containing the plurality of second pixel circuits. Furthermore, the columns of first pixel circuits and the columns of second pixel circuits arranged in a corresponding manner are staggered in the column direction of the second display area.

2. The display substrate as claimed in claim 1, wherein, The driving circuit layer includes: multiple first data lines and multiple second data lines; wherein, In the column direction, at least a portion of each of the first data lines overlaps with the first display area, and each of the first data lines is electrically connected to at least one column of the first pixel circuit. In the column direction, at least a portion of each of the second data lines overlaps with the second display area, and each of the second data lines is electrically connected to a corresponding column of the second pixel circuit.

3. The display substrate as described in claim 1, wherein, The driving circuit layer includes: a plurality of second data lines, wherein at least a portion of each second data line overlaps with the second display area in the column direction, and each second data line is electrically connected to at least one column of the first pixel circuit and one column of the second pixel circuit.

4. The display substrate as claimed in claim 1, wherein, The driving circuit layer includes: multiple first data lines and multiple second data lines; wherein, In the column direction, at least a portion of each of the first data lines overlaps with the first display area, and each of the first data lines is electrically connected to at least one column containing the first pixel circuit. In the column direction, at least a portion of each of the second data lines overlaps with the second display area, and the plurality of second data lines are electrically connected to the columns where the plurality of second pixel circuits are located, respectively. The columns where the first pixel circuits are not electrically connected to the first data lines are electrically connected to the second data lines of the corresponding columns where the second pixel circuits are located.

5. The display substrate as described in claim 2 or 4, wherein, The plurality of first data lines are bent along the edge of the first display area toward the side of the first pixel circuit that is away from or close to the second display area; or, the plurality of first data lines are bent along the edge of the first display area toward the side of the first pixel circuit that is away from or close to the first display area.

6. The display substrate according to any one of claims 2-4, wherein, The second data line connecting a column of the first pixel circuits and a column of the second pixel circuits includes a diagonal line; or, When a column of first pixel circuits in the column direction of the first display area is correspondingly set with a column of second pixel circuits in the second display area, the second data line connecting the column of first pixel circuits and the column of second pixel circuits includes a broken line.

7. The display substrate as claimed in claim 1, wherein, The driving circuit layer includes: a plurality of first shift register units cascaded within the border area, a plurality of second shift register units cascaded within the border area, a plurality of first control lines extending along the row direction, and a plurality of second control lines extending along the row direction within the second display area; wherein, Each of the first shift register units is electrically connected to a row of the first pixel circuit via a first control line; Each of the second shift register units is electrically connected to a row of the second pixel circuit via a second control line.

8. The display substrate as claimed in claim 1, wherein, The first light-emitting device includes a first anode; the second light-emitting device includes a second anode; wherein, When the emission color of the first light-emitting device is the same as that of the second light-emitting device, the projected area of ​​the first anode on the substrate is smaller than that of the second anode.

9. The display substrate as claimed in claim 8, wherein, The ratio of the projected area of ​​the first anode of at least one color on the substrate to the projected area of ​​the second anode is greater than or equal to 3 / 10 and less than or equal to 9 / 10.

10. The display substrate as claimed in claim 1, wherein, Each transparent conductive layer contains multiple transparent traces that do not overlap with each other, and the orthographic projections of multiple transparent traces contained in different transparent conductive layers on the substrate do not overlap or at least partially overlap with each other.

11. The display substrate as claimed in claim 10, wherein, The plurality of transparent conductive layers include a first transparent conductive layer, a second transparent conductive layer, and a third transparent conductive layer that are stacked and insulated from each other; wherein, the first transparent conductive layer includes a plurality of first transparent traces, the second transparent conductive layer includes a plurality of second transparent traces, and the third transparent conductive layer includes a plurality of third transparent traces; The plurality of first light-emitting devices include a plurality of first color light-emitting devices, a plurality of second color light-emitting devices, and a plurality of third color light-emitting devices; The first pixel circuit includes a first sub-pixel circuit, a second sub-pixel circuit, and a third sub-pixel circuit; One end of the first transparent trace is electrically connected to the first sub-pixel circuit, and the other end is electrically connected to the first color light-emitting device. One end of the second transparent trace is electrically connected to the second sub-pixel circuit, and the other end is electrically connected to the corresponding second color light-emitting device. One end of the third transparent trace is electrically connected to the third sub-pixel circuit, and the other end is electrically connected to the corresponding third color light-emitting device.

12. The display substrate according to any one of claims 1-4 and 7-11, wherein, The first display area is configured to install a light-collecting module.

13. A display panel, wherein, Includes the display substrate as described in any one of claims 1-12.

14. A display device, wherein, include: A light-collecting module and a display panel as described in claim 13; wherein the light-collecting module is disposed in a first display area of ​​the display panel.

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