Display substrate and display device

Abstract

Embodiments of the present disclosure relate to a display substrate and a display device.SOLUTION: The display substrate has a plurality of sub-pixels arranged in an array, and includes a base substrate, a driving circuit layer, a light emitting device layer, and a black matrix layer. The black matrix layer has a plurality of first light-transmitting openings and a plurality of second light-transmitting openings between the plurality of first light-transmitting openings in a direction perpendicular to a plate surface of the base substrate, the light-emitting devices of the plurality of sub-pixels are respectively exposed through the plurality of first light-transmitting openings, and the plurality of sub-pixels include a first sub-pixel and a second sub-pixel; The driving circuit layer includes a plurality of light-transmitting portions, and each of the plurality of second light-transmitting openings is disposed corresponding to at least one of the plurality of light-transmitting portions to transmit light within a predetermined angle range with respect to a plate surface of the display substrate. The display substrate has a better display effect and can realize a fingerprint recognition function.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This application is a divisional application of Japanese Patent Application No. 2022-558522 in the Japanese national stage of International Application No. PCT / CN2021 / 128699 filed on November 4, 2021, which claims the priority of International Application No. PCT / CN2021 / 073725 filed on January 26, 2021, the priority of International Application No. PCT / CN2021 / 094676 filed on May 19, 2021, and the priority of Chinese Patent Application No. 202110726490.3 filed on June 29, 2021, and the entire contents disclosed in the above patent applications are incorporated herein by reference.

[0002] The embodiments of the present disclosure relate to a display substrate and a display device. [Background technology]

[0003] OLED (Organic Light Emitting Diode) display devices have a series of advantages such as self-luminescence, high contrast, high resolution, wide viewing angle, low power consumption, fast response speed, and low manufacturing cost, and have become one of the important development directions of new generation display devices, attracting more and more attention. Summary of the Invention [Means for solving the problem]

[0004] At least one embodiment of the present disclosure provides a display substrate having a plurality of sub-pixels arranged in an array, the display substrate including: a base substrate; a driving circuit layer disposed on the base substrate; a light-emitting device layer disposed on one side of the driving circuit layer away from the base substrate; and a black matrix layer disposed on the one side of the light-emitting device layer away from the base substrate, wherein each of the plurality of sub-pixels includes a pixel driving circuit disposed on the driving circuit layer and a light-emitting device disposed on the light-emitting device layer, and the pixel driving circuit is configured to drive the light-emitting device; the black matrix layer has a plurality of first light-transmitting openings that respectively expose the light-emitting devices of the plurality of sub-pixels in a direction perpendicular to a surface of the base substrate, and a plurality of second light-transmitting openings located between the plurality of first light-transmitting openings; the driving circuit layer includes a plurality of light-transmitting portions, and each of the plurality of second light-transmitting openings is disposed corresponding to at least one of the plurality of light-transmitting portions, thereby transmitting light within a predetermined angle range with respect to a surface of the display substrate.

[0005] For example, in at least one embodiment of a display substrate of the present disclosure, the plurality of subpixels include a first subpixel and a second subpixel, the plurality of light-transmitting portions include a first light-transmitting portion included in a pixel driving circuit of the first subpixel and a second light-transmitting portion included in a pixel driving circuit of the second subpixel, and in a direction perpendicular to the surface of the base substrate, the plurality of second light-transmitting openings include a first light-transmitting sub-opening that at least partially overlaps the first light-transmitting portion and a second light-transmitting sub-opening that at least partially overlaps the second light-transmitting portion, and in a direction parallel to the surface of the base substrate, a planar shape of the first light-transmitting sub-opening is different from a planar shape of the second light-transmitting sub-opening.

[0006] For example, in at least one embodiment of the display substrate of the present disclosure, the ratio of the area of ​​the first light-transmitting sub-aperture to the area of ​​the second light-transmitting sub-aperture is 2 or greater.

[0007] For example, in at least one embodiment of the display substrate of the present disclosure, the ratio of the area of ​​the first light-transmitting sub-aperture to the area of ​​the second light-transmitting sub-aperture is in the range of (3-4):1.

[0008] For example, in at least one embodiment of the display substrate of the present disclosure, the plurality of subpixels further include a third subpixel, the pixel driving circuit of the third subpixel has a third light-transmitting portion, the plurality of second light-transmitting openings further include a third light-transmitting sub-opening that at least partially overlaps with the third light-transmitting portion in a direction perpendicular to the surface of the base substrate, the planar shape of the third light-transmitting sub-opening is different from the planar shapes of the first light-transmitting sub-opening and the second light-transmitting sub-opening in a direction parallel to the surface of the base substrate, and the area of ​​the third light-transmitting sub-opening is larger than the area of ​​the second light-transmitting sub-opening and approximately equal to the area of ​​the first light-transmitting sub-opening.

[0009] For example, in at least one embodiment of the display substrate of the present disclosure, the range of the ratio between the area of ​​the first light-transmitting sub-opening, the area of ​​the second light-transmitting sub-opening, and the area of ​​the third light-transmitting sub-opening is (3 to 4):1:(3 to 4).

[0010] For example, in at least one embodiment of the display substrate of the present disclosure, the plurality of subpixels further include a fourth subpixel, the pixel driving circuit of the fourth subpixel has a fourth light-transmitting portion, the plurality of second light-transmitting openings further include a fourth light-transmitting sub-opening at least partially overlapping with the fourth light-transmitting portion in a direction perpendicular to the surface of the base substrate, the planar shape of the fourth light-transmitting sub-opening is different from the planar shapes of the first light-transmitting sub-opening, the second light-transmitting sub-opening and the third light-transmitting sub-opening in a direction parallel to the surface of the base substrate, and the area of ​​the fourth light-transmitting sub-opening is smaller than the area of ​​the third light-transmitting sub-opening and the area of ​​the first light-transmitting sub-opening, and is larger than the area of ​​the second light-transmitting sub-opening.

[0011] For example, in at least one embodiment of the display substrate of the present disclosure, the range of the area ratio between the first light-transmitting sub-opening, the second light-transmitting sub-opening, the third light-transmitting sub-opening, and the fourth light-transmitting sub-opening is (3-4):1:(3-4):(2.5-3.5).

[0012] For example, in a display substrate according to at least one embodiment of the present disclosure, the second light-transmitting openings are arranged in an array of multiple rows and multiple columns.

[0013] For example, in a display substrate according to at least one embodiment of the present disclosure, the first subpixel is a red subpixel, the second subpixel is a green subpixel, the third subpixel is a blue subpixel, and the fourth subpixel is a green subpixel, and one first subpixel, one second subpixel, one third subpixel, and one fourth subpixel constitute one repeating unit, and multiple repeating units are arranged in an array on the base substrate.

[0014] For example, a display substrate according to at least one embodiment of the present disclosure further includes a color film layer, and the color film layer includes a plurality of color film patterns respectively covering the plurality of first light-transmitting openings, and in a direction perpendicular to the surface of the base substrate, the plurality of color film patterns include a first color film pattern at least partially overlapping with the light-emitting device of the first sub-pixel and a second color film pattern at least partially overlapping with the light-emitting device of the second sub-pixel, and in a direction parallel to the surface of the base substrate, the planar shape of the first color film pattern is different from the planar shape of the second color film pattern, and the area of ​​the first color film pattern is larger than the area of ​​the second color film pattern.

[0015] For example, in the display substrate according to at least one embodiment of the present disclosure, the ratio of the area of ​​the first color film pattern to the area of ​​the second color film pattern ranges from (1 to 1.5):1.

[0016] For example, in a display substrate according to at least one embodiment of the present disclosure, the first color film pattern is approximately rectangular, and the second color film pattern is approximately semi-elliptical.

[0017] For example, in at least one embodiment of the display substrate of the present disclosure, the plurality of color film patterns further include a third color film pattern that at least partially overlaps the light-emitting device of the third sub-pixel, and in a direction parallel to the surface of the base substrate, the planar shape of the third color film pattern is different from the planar shapes of the first color film pattern and the second color film pattern, and the area of ​​the third color film pattern is larger than the area of ​​the first color film pattern and the area of ​​the second color film pattern.

[0018] For example, in at least one embodiment of the display substrate of the present disclosure, the range of the ratio between the area of ​​the first color film pattern, the area of ​​the second color film pattern, and the area of ​​the third color film pattern is (1 to 1.5):1:(1 to 1.6).

[0019] For example, in a display substrate according to at least one embodiment of the present disclosure, in a direction perpendicular to the surface of the base substrate, the plurality of color film patterns further include a fourth color film pattern that at least partially overlaps the light-emitting device of the fourth sub-pixel, and in a direction parallel to the surface of the base substrate, the planar shape of the fourth color film pattern is approximately the same as the planar shape of the second color film pattern, and the area of ​​the fourth color film pattern is approximately equal to the area of ​​the second color film pattern.

[0020] For example, in the display substrate according to at least one embodiment of the present disclosure, the fourth color film pattern partially overlaps the fourth light-transmitting sub-opening in a direction perpendicular to the surface of the base substrate.

[0021] For example, in the display substrate according to at least one embodiment of the present disclosure, the minimum distance between the edges of the plurality of color film patterns and the edges of the plurality of second light-transmitting openings is 1 μm to 5 μm.

[0022] For example, a display substrate according to at least one embodiment of the present disclosure further includes a planarization layer disposed on one side of the driving circuit layer away from the base substrate and a pixel definition layer disposed on one side of the planarization layer away from the base substrate, the pixel definition layer including a plurality of subpixel openings, the light emitting devices including a first electrode layer, a light emitting material layer, and a second electrode layer which are stacked in order in a direction away from the base substrate, the first electrode layer being disposed on one side of the planarization layer away from the base substrate, the pixel definition layer being disposed on one side of the first electrode layer away from the base substrate, the plurality of subpixel openings respectively exposing the first electrode layers of the light emitting devices of the plurality of subpixels, and for one first light-transmitting opening and one subpixel opening corresponding to the same subpixel, the planar shape of the first light-transmitting opening is substantially the same as the planar shape of the subpixel opening.

[0023] For example, in a display substrate according to at least one embodiment of the present disclosure, the orthogonal projection of the subpixel opening on the base substrate completely overlaps with the orthogonal projection of the first light-transmitting opening on the base substrate, and the orthogonal projection of the subpixel opening on the base substrate is located within the orthogonal projection of the first light-transmitting opening on the base substrate.

[0024] For example, in a display substrate according to at least one embodiment of the present disclosure, for one color film pattern and one subpixel opening corresponding to the same subpixel, the planar shape of the color film pattern is different from the planar shape of the subpixel opening.

[0025] For example, in the display substrate according to at least one embodiment of the present disclosure, at least some edges of the plurality of second light-transmitting apertures are parallel to at least some edges of the color film pattern adjacent thereto.

[0026] For example, in a display substrate according to at least one embodiment of the present disclosure, the first electrode layer includes a main body portion and a connecting portion, the connecting portion is configured to be electrically connected to the pixel driving circuit, and the orthogonal projection of the subpixel opening on the base substrate is located within the orthogonal projection of the main body portion on the base substrate.

[0027] For example, a display substrate according to at least one embodiment of the present disclosure further includes a plurality of connection electrodes arranged on one side of the planarization layer closer to the base substrate, wherein first electrode layers of the light-emitting devices of the plurality of sub-pixels are electrically connected to the plurality of connection electrodes through a plurality of via holes in the planarization layer, and the plurality of connection electrodes are electrically connected to pixel driving circuits of the plurality of sub-pixels, and in a direction perpendicular to the surface of the base substrate, the connection electrodes at least partially overlap with the connection portions of the first electrode layers.

[0028] For example, in at least one embodiment of the display substrate of the present disclosure, the pixel driving circuit layer further includes a power line, and the power line at least partially overlaps with the main body of the first electrode layer in a direction perpendicular to the surface of the base substrate.

[0029] For example, the display substrate according to at least one embodiment of the present disclosure further includes a touch structure disposed between the light emitting device layer and the black matrix layer, and the touch structure at least partially overlaps with the connection portions of the first electrode layers of at least some of the light emitting devices of the plurality of sub-pixels.

[0030] For example, in a display substrate according to at least one embodiment of the present disclosure, the touch structure includes a first conductive layer including a first pattern formed by a plurality of first wirings, and in a direction perpendicular to the surface of the base substrate, the first pattern at least partially overlaps with a connection portion of a first electrode layer of at least some of the light-emitting devices of the plurality of sub-pixels.

[0031] For example, in a display substrate according to at least one embodiment of the present disclosure, in a direction perpendicular to the surface of the base substrate, the first pattern at least partially overlaps with the connection portions of the first electrode layers of the light-emitting devices of the first sub-pixel and the third sub-pixel.

[0032] For example, in a display substrate according to at least one embodiment of the present disclosure, the touch structure further includes a second conductive layer disposed on one side of the first conductive layer away from the base substrate, the second conductive layer including a second pattern formed by a plurality of second wirings, and in a direction perpendicular to the surface of the base substrate, the second pattern at least partially overlaps with a connection portion of a first electrode layer of at least some of the light-emitting devices of the plurality of sub-pixels.

[0033] For example, in a display substrate according to at least one embodiment of the present disclosure, in a direction perpendicular to the surface of the base substrate, the second pattern at least partially overlaps with the connection portions of the first electrode layers of the light-emitting devices of the first subpixel, the second subpixel, and the third subpixel.

[0034] For example, in the display substrate according to at least one embodiment of the present disclosure, the first pattern and the second pattern do not overlap with the plurality of second light-transmitting openings in a direction perpendicular to the surface of the base substrate.

[0035] For example, in the display substrate according to at least one embodiment of the present disclosure, at least a portion of the plurality of color film patterns partially overlaps with the first pattern and the second pattern in a direction perpendicular to the surface of the base substrate.

[0036] For example, in the display substrate according to at least one embodiment of the present disclosure, at least some edges of the plurality of color film patterns are parallel to some of the plurality of first wirings and the plurality of second wirings.

[0037] For example, in a display substrate according to at least one embodiment of the present disclosure, in a direction parallel to the surface of the base substrate, the area of ​​the subpixel opening corresponding to the first subpixel is larger than the area of ​​the subpixel opening corresponding to the second subpixel, and in a direction perpendicular to the surface of the base substrate, the overlapping area between the first color film pattern corresponding to the first subpixel and the first and second patterns is larger than the overlapping area between the second color film pattern corresponding to the second subpixel and the first and second patterns.

[0038] At least one embodiment of the present disclosure provides a display device including a display substrate according to an embodiment of the present disclosure.

[0039] For example, a display device according to at least one embodiment of the present disclosure further includes a textured touch surface and an image sensor array, wherein the image sensor array is disposed on one side of the driving circuit layer away from the light-emitting device layer and includes a plurality of image sensors, and the plurality of image sensors are configured to collect texture by receiving light emitted from a plurality of light-emitting devices in the light-emitting device layer and reflected by the texture of the textured touch surface, passing through the plurality of second light-transmitting openings, and reaching the plurality of image sensors.

[0040] In order to more clearly describe the technical solutions of the embodiments of the present disclosure, the following briefly introduces drawings of the embodiments. It should be apparent that the drawings in the following description only relate to some embodiments of the present disclosure and do not limit the present disclosure. [Brief explanation of the drawings]

[0041] [Figure 1] FIG. 1 is a schematic plan view of a display substrate according to at least one embodiment of the present disclosure. [Figure 2A] FIG. 2A is a schematic cross-sectional view of a display substrate according to at least one embodiment of the present disclosure. [Figure 2B] FIG. 2B is another schematic cross-sectional view of a display substrate according to at least one embodiment of the present disclosure. [Figure 3]FIG. 3 is a schematic plan view of a black matrix layer and a color film layer in a display substrate according to at least one embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic plan view of a black matrix layer in a display substrate according to at least one embodiment of the present disclosure. [Figure 5] FIG. 5 is a schematic plan view of a first light-transmitting aperture and a first electrode layer corresponding to one sub-pixel in a display substrate according to at least one embodiment of the present disclosure. [Figure 6] FIG. 6 is a further schematic cross-sectional view of a display substrate according to at least one embodiment of the present disclosure. [Figure 7A] FIG. 7A is a schematic plan view of a first conductive layer of a touch structure on a display substrate according to at least one embodiment of the present disclosure. [Figure 7B] FIG. 7B is a schematic plan view of a second conductive layer of a touch structure on a display substrate according to at least one embodiment of the present disclosure. [Figure 8] FIG. 8 is a schematic plan view of a stack of a first conductive layer and a second conductive layer of a touch structure on a display substrate according to at least one embodiment of the present disclosure. [Figure 9A] FIG. 9A is a schematic plan view of a stack of a touch structure and a black matrix layer on a display substrate according to at least one embodiment of the present disclosure. [Figure 9B] FIG. 9B is a schematic plan view of a stack of a plurality of color film patterns and a first pattern and a second pattern on a display substrate according to at least one embodiment of the present disclosure. [Figure 10A] FIG. 10A is a schematic plan view of a first sub-pixel of a display substrate according to at least one embodiment of the present disclosure. [Figure 10B] FIG. 10B is a schematic plan view of the second and fourth sub-pixels of the display substrate according to at least one embodiment of the present disclosure. [Figure 10C] FIG. 10C is a schematic plan view of a third sub-pixel of a display substrate according to at least one embodiment of the present disclosure. [Figure 11A] FIG. 11A is a schematic diagram of a pixel driving circuit of a display substrate according to at least one embodiment of the present disclosure. [Figure 11B] FIG. 11B is a schematic diagram of another pixel driving circuit of a display substrate according to at least one embodiment of the present disclosure. [Figure 12] FIG. 12 is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 13A] FIG. 13A is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 13B] FIG. 13B is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 14A] FIG. 14A is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 14B] FIG. 14B is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 15A] FIG. 15A is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 15B] FIG. 15B is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 16A] FIG. 16A is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 16B] FIG. 16B is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 17] FIG. 17 is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 18A]FIG. 18A is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 18B] FIG. 18B is a schematic plan view of a portion of each functional layer of a display substrate according to at least one embodiment of the present disclosure and a schematic plan view of a portion after the functional layers have been stacked in order. [Figure 19] FIG. 19 is a cross-sectional view of a display device according to at least one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0042] In order to clarify the objectives, technical solutions and advantages of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the embodiments of the present disclosure. It is obvious that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. Based on the described embodiments of the present disclosure, all other embodiments that a person skilled in the art can obtain without creative work fall within the scope of protection of the present disclosure.

[0043] Unless otherwise defined, technical or scientific terms used in this disclosure have the ordinary meaning understood by those skilled in the art. The terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similar terms such as "comprise" or "comprise" mean that the element or component described after the term includes the element or component listed before the term and its equivalents, but does not exclude other elements or components. Similar terms such as "connect" or "couple" are not limited to physical or mechanical connections, but may also include electrical connections, whether directly or indirectly connected. Terms such as "top," "bottom," "left," "right," and the like are merely intended to indicate relative positional relationships, and if the absolute position of the objects being described changes, the relative positional relationships may correspondingly change.

[0044] To prevent light reflection from the screen, conventional OLED display substrates typically have a polarizing plate attached to the display substrate to improve the display substrate's usability in ambient light. However, the inventors of the present disclosure discovered that the transmittance of the polarizing plate is typically around 40%, resulting in low light extraction efficiency and high power consumption of the display substrate.

[0045] In some embodiments, a cover film on encapsulation (COE) technology, i.e., a color film (CF) is used to replace the polarizer, improving the light extraction efficiency of the display substrate and contributing to the development of highly integrated, lightweight, and thin display substrates. In the COE technology, a black matrix layer is formed on the display substrate, and light-transmitting openings are formed in the black matrix layer at positions corresponding to the light-emitting devices of the sub-pixels, allowing light emitted from the light-emitting devices of the sub-pixels to pass through. The color film is then placed in the light-transmitting openings, where the black matrix layer can absorb light and shield some of the metal on the display substrate, thereby reducing the light reflectance of the display substrate. However, a photosensitive element, such as an image sensor, is typically placed on the non-display side of the display substrate to achieve functions such as fingerprint recognition. In this case, the display substrate must have a certain light transmittance so that signal light incident on the display side of the display substrate can pass through the display substrate and reach the non-display side of the display substrate.

[0046] For example, the black matrix layer may further have a plurality of small holes formed therein for transmitting signal light for fingerprint recognition, etc. These small holes usually have regular shapes and approximately uniform sizes, such as rectangular or circular, thereby allowing the signal light to pass through. However, the inventors of the present disclosure have found that these rectangular or circular small holes are difficult to achieve during the manufacturing process, for example, due to the difficulty in controlling the process precision, and that these small holes may be too close to or communicate with the light-transmitting openings for transmitting light emitted from the light-emitting devices of the sub-pixels, thereby affecting the display effect of the display substrate.

[0047] At least one embodiment of the present disclosure provides a display substrate and a display device, the display substrate having a plurality of sub-pixels arranged in an array, and including a base substrate, a driving circuit layer disposed on the base substrate, a light emitting device layer disposed on one side of the driving circuit layer away from the base substrate, and a black matrix layer disposed on one side of the light emitting device layer away from the base substrate, each of the plurality of sub-pixels including a pixel driving circuit disposed on the driving circuit layer and a light emitting device disposed on the light emitting device layer, the pixel driving circuit being configured to drive the light emitting device, the black matrix layer having a plurality of first light-transmitting openings respectively exposing the light emitting devices of the plurality of sub-pixels in a direction perpendicular to a surface of the base substrate and a plurality of second light-transmitting openings located between the plurality of first light-transmitting openings, the driving circuit layer including a plurality of light-transmitting portions, each of the plurality of second light-transmitting openings being disposed corresponding to at least one of the plurality of light-transmitting portions to transmit light within a predetermined angular range with respect to the surface of the display substrate.

[0048] In the above-mentioned display substrate according to the embodiment of the present disclosure, the signal light used for functions such as texture recognition can pass through multiple second light-transmitting openings and multiple light-transmitting portions in sequence to reach a photosensitive element, such as an image sensor, installed on the back side of the display substrate, thereby activating the photosensitive element to perform functions such as texture recognition.

[0049] For example, the plurality of subpixels include a first subpixel and a second subpixel, the pixel driving circuit of the first subpixel has a first light-transmitting portion, and the pixel driving circuit of the second subpixel has a second light-transmitting portion, and in a direction perpendicular to the surface of the base substrate, the plurality of second light-transmitting openings include a first light-transmitting sub-opening that at least partially overlaps with the first light-transmitting portion and a second light-transmitting sub-opening that at least partially overlaps with the second light-transmitting portion, and in a direction parallel to the surface of the base substrate, the planar shape of the first light-transmitting sub-opening is different from the planar shape of the second light-transmitting sub-opening, and for example, the ratio of the area of ​​the first light-transmitting sub-opening to the area of ​​the second light-transmitting sub-opening is 2 or more.

[0050] In the display substrate according to the embodiment of the present disclosure, since the light-emitting devices of different sub-pixels have different sizes and installation positions, second light-transmitting openings of different shapes and sizes are installed corresponding to different sub-pixels, so that the differences between different sub-pixels can be fully addressed and different second light-transmitting openings can be designed, thereby fully realizing light transmission through the second light-transmitting openings and maintaining the installation form of the existing sub-pixels, which is beneficial to the manufacturing process and improves the process precision, further improving the manufacturing yield of the display substrate and enhancing the display effect of the display substrate.

[0051] Hereinafter, a display substrate and a display device according to an embodiment of the present disclosure will be described with reference to some specific examples.

[0052] At least one embodiment of the present disclosure provides a display substrate, of which FIG. 1 shows a schematic plan view and FIG. 2A shows a schematic cross-sectional view of a portion of the display substrate.

[0053] 1 and 2A, the display substrate has a plurality of sub-pixels arranged in an array, and includes a base substrate 101, a driving circuit layer 102 disposed on the base substrate 101, a light-emitting device layer disposed on one side of the driving circuit layer 102 away from the base substrate 101, and a black matrix layer 113 disposed on one side of the light-emitting device layer away from the base substrate 101. Each sub-pixel includes a pixel driving circuit disposed on the driving circuit layer 102 and a light-emitting device EM disposed on the light-emitting device layer, and the pixel driving circuit is configured to drive the light-emitting device EM.

[0054] 2A , the pixel driving circuit includes at least one thin film transistor TFT and a storage capacitor Cst, and the thin film transistor TFT includes an active layer 1021, a gate 1022, a source 1023, and a drain 1024 disposed on a base substrate 101. The source 1023 of the thin film transistor TFT is electrically connected to the first electrode layer 104 of the light emitting device EM. The storage capacitor Cst includes a first capacitor electrode C1 and a second capacitor electrode C2 disposed on the base substrate 101, and the first capacitor electrode C1 is disposed on the same layer as the gate 1022, and the second capacitor electrode C2 is disposed on one side of the first capacitor electrode C1 that is away from the base substrate 101.

[0055] For example, as shown in FIG. 2A, the display panel may further include structures such as a buffer layer 103 disposed on the base substrate 101, a first gate insulating layer 1024 disposed on the active layer 1021, a second gate insulating layer 1025 disposed on the gate 1022 and the first capacitor electrode C1, an interlayer insulating layer 1026 disposed on the second capacitor electrode CE2, and a passivation layer 1027 disposed on the source 1023 and the drain 1024.

[0056] For example, the pixel driving circuit may be formed as a 2T1C (two thin film transistors, one storage capacitor), 6T1C (six thin film transistors, one storage capacitor) or other configuration, thereby including a plurality of thin film transistors, which have a stack structure similar to or the same as the thin film transistor shown in FIG. 2A, where only the thin film transistor directly connected to the light-emitting device is shown in FIG. 2A, and the thin film transistor may be a driving thin film transistor, a light-emitting control thin film transistor, etc.

[0057] For example, FIG. 2B is a schematic cross-sectional view of another portion of a display substrate according to at least one embodiment of the present disclosure. In this embodiment, as shown in FIG. 2B, the display substrate further includes a connection electrode 1043, and the first electrode layer 104 of the light-emitting device EM is electrically connected to the pixel driving circuit via the connection electrode 1043. The first electrode layer 104 is connected to the connection electrode 1043 through a via hole VA in a planarization layer 109 (described in detail later), and the connection electrode 1043 is connected to the source 1023 of the thin-film transistor TFT through a via hole in another planarization layer 1091 (described in detail later). For example, in a direction perpendicular to the surface of the base substrate, the connection electrode 1043 at least partially overlaps with the connection portion 1042 (described later) of the first electrode layer 104. Other structures of the display substrate shown in FIG. 2B may be referenced to the display substrate shown in FIG. 2A, and will not be described again here.

[0058] In the embodiments of the present disclosure, "located in the same layer" means that two or more functional layers (or structural layers) are formed in the same layer and made of the same material in the hierarchical structure of the display substrate, i.e., in the manufacturing process, the two or more functional layers (or structural layers) can be formed from the same material layer, and the required patterns and structures can be formed by the same patterning process.

[0059] For example, the black matrix layer 113 has a plurality of first light-transmitting openings 1131 that expose the light emitting devices EM of the sub-pixels in a direction perpendicular to the surface of the base substrate 101, respectively, and a plurality of second light-transmitting openings 1132 located between the plurality of first light-transmitting openings 1131. The plurality of first light-transmitting openings 1131 are used to transmit light emitted from the light emitting devices EM of the sub-pixels, respectively, and the plurality of second light-transmitting openings 1132 are used to transmit signal light required for a photosensitive device, such as an image sensor, disposed on the non-display side of the display substrate.

[0060] For example, the driving circuit layer includes a plurality of light-transmitting portions, and each of the plurality of second light-transmitting openings 1132 is arranged corresponding to at least one of the plurality of light-transmitting portions to transmit light within a predetermined angle range relative to the surface of the display substrate. For example, the plurality of second light-transmitting openings 1132 are arranged in an array of multiple rows and columns, and accordingly, the plurality of light-transmitting portions are also arranged in an array of multiple rows and columns.

[0061] 1 , the subpixels include a first subpixel P1 and a second subpixel P2, the light-transmitting portions include a first light-transmitting portion 102A included in the pixel driving circuit of the first subpixel P1 and a second light-transmitting portion 102B included in the pixel driving circuit of the second subpixel P2, and the second light-transmitting openings 1132 include a first light-transmitting subopening 1132A at least partially overlapping the first light-transmitting portion 102A and a second light-transmitting subopening 1132B at least partially overlapping the second light-transmitting portion 102B in a direction perpendicular to the surface of the base substrate 101. In a direction parallel to the surface of the base substrate 101, the planar shape of the first light-transmitting subopening 1132A is different from the planar shape of the second light-transmitting subopening 1132B. For example, in some embodiments, the ratio of the area of ​​the first light-transmitting subopening 1132A to the area of ​​the second light-transmitting subopening 1132B is 2 or greater.

[0062] For example, the light-transmitting parts 102A and 102B of the pixel driving circuit include light-transmitting insulating materials, which include the light-transmitting insulating materials of insulating layers such as the first gate insulating layer 1024, the second gate insulating layer 1025, the interlayer insulating layer 1026, and the passivation layer 1027.

[0063] 1 , in some examples, the planar shape of first light-transmitting subopening 1132A is irregular and has an outline at least partially similar to that of first light-transmitting portion 102A, and the orthogonal projection of first light-transmitting subopening 1132A on base substrate 101 is located within the orthogonal projection of first light-transmitting portion 102A on base substrate 101. For example, the planar shape of second light-transmitting subopening 1132B is approximately rectangular, and the orthogonal projection of second light-transmitting subopening 1132B on base substrate 101 is located within the orthogonal projection of second light-transmitting portion 102B on base substrate 101. As a result, both the first light-transmitting portion 102A and the first light-transmitting sub-opening 1132A can transmit light that forms a certain angle with the surface of the base substrate 101, and both the second light-transmitting portion 102B and the second light-transmitting sub-opening 1132B can transmit light that forms a certain angle with the surface of the base substrate 101, and this light can transmit to the non-display side of the display panel, thereby activating a photosensitive device, such as an image sensor, installed on the non-display side of the display panel.

[0064] For example, in some embodiments, the ratio of the area of ​​first light-transmitting subopening 1132A to the area of ​​second light-transmitting subopening 1132B is in the range of (3 to 4):1, such as 3:1, 3.5:1, or 3.8:1, etc. Second light-transmitting subopening 1132B has a relatively small area, which can avoid the pixel driving circuit of the second subpixel and its connecting circuit, preventing signal light from irradiating and reflecting on these circuits and adversely affecting them.

[0065] For example, in some embodiments, as shown in FIG. 1 , the plurality of subpixels further includes a third subpixel P3, and the pixel driving circuit of the third subpixel P3 has a third light-transmitting portion 1132C. In a direction perpendicular to the surface of the base substrate 101, the plurality of second light-transmitting openings 1132 further include a third light-transmitting subopening 102C that at least partially overlaps with the third light-transmitting portion 1132C. In a direction parallel to the surface of the base substrate 101, the planar shape of the third light-transmitting subopening 102C is different from the planar shapes of the first light-transmitting subopening 102A and the second light-transmitting subopening 102B, and the area of ​​the third light-transmitting subopening 102C is greater than the area of ​​the second light-transmitting subopening 102B and approximately equal to the area of ​​the first light-transmitting subopening 102A. For example, the difference between the area of ​​the third light-transmitting sub-opening 102C and the area of ​​the first light-transmitting sub-opening 102A is 10% or less of the area of ​​the third light-transmitting sub-opening 102C, and for example, the area of ​​the third light-transmitting sub-opening 102C may be slightly larger or slightly smaller than the area of ​​the first light-transmitting sub-opening 102A.

[0066] For example, the third light-transmitting sub-opening 1132C has an irregular planar shape, i.e., is not a basic shape such as a rectangle or a circle, but has an outline at least partially similar to that of the third light-transmitting portion 102C, and the orthogonal projection of the third light-transmitting sub-opening 1132C on the base substrate 101 is located inside the orthogonal projection of the third light-transmitting portion 102C on the base substrate 101. As a result, both the third light-transmitting portion 102C and the third light-transmitting sub-opening 1132C can transmit light that forms a certain angle with the surface of the base substrate 101, and the light can transmit to the non-display side of the display panel, thereby activating a photosensitive device, such as an image sensor, installed on the non-display side of the display panel.

[0067] For example, in some embodiments, the ratio of the area of ​​first light-transmitting subopening 1132A to the area of ​​second light-transmitting subopening 1132B to the area of ​​third light-transmitting subopening 1132C is in the range of (3-4):1:(3-4), such as 3:1:3, 3.5:1:3.5, or 3.8:1:3.9.

[0068] For example, in some embodiments, as shown in FIG. 1 , the plurality of subpixels further includes a fourth subpixel P4, and the pixel driving circuit of the fourth subpixel P4 has a fourth light-transmitting portion 102D. In a direction perpendicular to the surface of the base substrate 101, the plurality of second light-transmitting openings 1132 further include a fourth light-transmitting subopening 1132D that at least partially overlaps with the fourth light-transmitting portion 102D. In a direction parallel to the surface of the base substrate 101, the planar shape of the fourth light-transmitting subopening 1132D is different from the planar shapes of the first light-transmitting subopening 1132A, the second light-transmitting subopening 1132B, and the third light-transmitting subopening 1132C. The area of ​​the fourth light-transmitting subopening 1132D is smaller than the area of ​​the third light-transmitting subopening 1132C and the area of ​​the first light-transmitting subopening 1132A, and is larger than the area of ​​the second light-transmitting subopening 1132C.

[0069] For example, the fourth light-transmitting sub-opening 1132D has an irregular planar shape and has an outline at least partially similar to that of the fourth light-transmitting portion 102D, and the orthogonal projection of the fourth light-transmitting sub-opening 1132D on the base substrate 101 is located inside the orthogonal projection of the fourth light-transmitting portion 102D on the base substrate 101. Thus, both the fourth light-transmitting portion 102D and the fourth light-transmitting sub-opening 1132D can transmit light that forms a certain angle with the surface of the base substrate 101, and the light can transmit to the non-display side of the display panel, thereby activating a photosensitive device, such as an image sensor, installed on the non-display side of the display panel.

[0070] For example, in some embodiments, the range of the area ratio between first light-transmitting subopening 1132A, second light-transmitting subopening 1132B, third light-transmitting subopening 1132C, and fourth light-transmitting subopening 1132D is (3-4):1:(3-4):(2.5-3.5), such as 3:1:3:2.5, 3.5:1:3.5:3, or 3.8:1:3.9:3.1, etc.

[0071] For example, in some embodiments, the first subpixel P1 is a red subpixel, the second subpixel P2 is a green subpixel, the third subpixel P3 is a blue subpixel, and the fourth subpixel P4 is a green subpixel, and one first subpixel P1, one second subpixel P2, one third subpixel P3, and one fourth subpixel P4 constitutes one repeating unit, and multiple repeating units are arranged in an array on the base substrate 101.

[0072] As a result, the first light-transmitting sub-opening 1132A, the second light-transmitting sub-opening 1132B, the third light-transmitting sub-opening 1132C and the fourth light-transmitting sub-opening 1132D corresponding to the multiple sub-pixels of each repeating unit can be fully arranged according to the structure of each sub-pixel, thereby improving the transmittance of signal light and not affecting the display effect of the display substrate.

[0073] For example, in some embodiments, as shown in FIG. 1, the driving circuit layer 102 may further include first signal lines S1 and second signal lines S2 arranged parallel to each other and periodically arranged, and the first signal lines S1 and the second signal lines S2 are configured to provide different electrical signals to the plurality of sub-pixels SP.

[0074] In addition, taking into consideration process errors and structural errors that exist in actual production, the signal lines that are formed may not be straight, and may have uneven portions, for example. In the embodiments of the present disclosure, the first signal line S1 and the second signal line S2 being "parallel to each other" may mean that the angle formed by the extension directions of the first signal line S1 and the second signal line S2 is within a range of 15 degrees, and they are not necessarily parallel in the strict sense.

[0075] For example, as shown in FIG. 1, the orthogonal projections of the plurality of second light-transmitting openings 1132 on the base substrate 101 are each located between the orthogonal projections of one first signal line S1 on the base substrate 101 and the orthogonal projections of one second signal line S2 closest to the one first signal line S1 on the base substrate 101.

[0076] For example, in some embodiments, the first signal line S1 is a light emission control signal line EMT, and the second signal line is a reset voltage line VNT, which will be described in detail later.

[0077] For example, in some embodiments, the plurality of rows and columns of subpixels may be arranged in a first subpixel row SP1 (in the illustration, the first subpixel row SP1 is illustrated as including one row of subpixels, but in other embodiments, the first subpixel row SP1 may include multiple rows of subpixels), and a second subpixel row SP2 (in the illustration, the second subpixel row SP2 is illustrated as including one row of subpixels, but in other embodiments, the second subpixel row SP2 may include multiple rows of subpixels) adjacent to the first subpixel row SP1 and located below the first subpixel row SP1 (i.e., located in the row next to the first subpixel row SP1 or scanned after the first subpixel row SP1 during circuit scanning). The pixel driving circuits of the first subpixel row SP1 share one emission control signal line EMT1 and one reset voltage line VNT1, and the pixel driving circuits of the second subpixel row SP2 share one emission control signal line EMT2 and one reset voltage line VNT2, and the orthogonal projection, on the base substrate 101, of the emission control signal line EM1 shared by the pixel driving circuits of the first subpixel row SP1 and the orthogonal projection, on the base substrate 101, of the reset voltage VNT2 shared by the pixel driving circuits of the second subpixel row SP2 includes the orthogonal projection, on the base substrate 101, of one row of second light-transmitting openings 1132.

[0078] For example, as shown in FIG. 1, the multiple rows and columns of subpixels further include a third subpixel row SP3 adjacent to and located below the second subpixel row SP2 (in the illustration, the third subpixel row SP3 includes one row of subpixels, but in other embodiments, the third subpixel row SP3 may include multiple rows of subpixels), and the pixel driving circuits of the third subpixel row SP3 share one light-emitting control signal line (not shown) and one reset voltage line VNT3. In this case, the orthogonal projection on the base substrate 101 of the light-emitting control signal line EMT2 shared by the pixel driving circuits of the second subpixel row SP2 and the orthogonal projection on the base substrate 101 of the reset voltage VNT3 shared by the pixel driving circuits of the third subpixel row SP3 include the orthogonal projection on the base substrate 101 of one row of second light-transmitting openings 1132.

[0079] For example, as shown in FIG. 1 , the driving circuit layer may further include third signal lines S3 and fourth signal lines S4 that are arranged parallel to each other and periodically arranged, the third signal lines S3 and the fourth signal lines S4 intersecting the first signal line S1 and the second signal line S2, for example perpendicular to them, and configured to provide different electrical signals to multiple sub-pixels, and the orthogonal projections of the multiple second light-transmitting openings 1032 on the base substrate 101 are each located between the orthogonal projections of one third signal line S3 on the base substrate 101 and the orthogonal projections of one fourth signal line S4 adjacent to the third signal line S3 on the base substrate 101.

[0080] For example, in some embodiments, the third signal line S3 is the first power supply line VDD1, and the fourth signal line S4 is the data line DT, which will be explained in detail later.

[0081] For example, as shown in FIG. 1, the first signal line S1, the second signal line S2, the third signal line S3, and the fourth signal line S4 define a plurality of first regions RG, i.e., the regions surrounded by dashed line frames in the drawing, and the orthogonal projections of the plurality of second light-transmitting openings 1032 on the base substrate 101 are respectively located within the orthogonal projections of the plurality of first regions RG on the base substrate 101.

[0082] For example, as shown in Figure 1, the orthogonal projections of at least some of the multiple connection electrodes 1043 on the base substrate 10 are located within the orthogonal projections of the multiple first regions RG on the base substrate 10, i.e., the orthogonal projections of the multiple connection electrodes 1043 on the base substrate 10 overlap with the orthogonal projections of the multiple first regions RG on the base substrate 10, or the orthogonal projections of the multiple connection electrodes 1043 on the base substrate 10 are each located within the orthogonal projections of the multiple first regions RG on the base substrate 10, see Figure 1.

[0083] For example, as shown in FIG. 1, the first signal line S1, the second signal line S2, the third signal line S2, the fourth signal line S4 and the plurality of connecting electrodes 1043 together define a plurality of light-transmitting portions 1020, that is, the area surrounded by the first signal line S1, the second signal line S2, the third signal line S2, the fourth signal line S4 and the plurality of connecting electrodes 1043 is a plurality of light-transmitting portions of the driving circuit layer.

[0084] For example, in some embodiments, as shown in Figures 2A and 2B, the display substrate may further include a color film layer 114, which includes a plurality of color film patterns 1141, each covering a plurality of first light-transmitting openings 1131, thereby filtering light emitted from the light-emitting devices EM of the sub-pixels.

[0085] 3 is a schematic plan view of a plurality of first light-transmitting openings 1131, a plurality of second light-transmitting openings 1132, and a plurality of color film patterns 1141. As shown in FIG. 3, in a direction perpendicular to the surface of the base substrate 101, the plurality of color film patterns 1141 include a first color film pattern 1141A at least partially overlapping the light-emitting device of the first sub-pixel P1 and a second color film pattern 1141B at least partially overlapping the light-emitting device of the second sub-pixel P2. In a direction parallel to the surface of the base substrate 101, the planar shape of the first color film pattern 1141A is different from the planar shape of the second color film pattern 1141B, and the area of ​​the first color film pattern 1141A is larger than the area of ​​the second color film pattern 1141B.

[0086] 3, the planar shape of the first color film pattern 1141A is approximately rectangular, e.g., a rectangle with a notch, and the planar shape of the second color film pattern 1141B is approximately semi-elliptical. For example, the areas of the first color film pattern 1141A and the second color film pattern 1141B are each larger than the area of ​​the first light-transmitting opening 1131 that they cover, thereby fully achieving the light filtering effect.

[0087] For example, in some instances, the ratio of the area of ​​the first color film pattern 1141A to the area of ​​the second color film pattern 1141B ranges from (1 to 1.5):1, such as 1.2:1 or 1.4:1.

[0088] 3, the plurality of color film patterns 1141 further includes a third color film pattern 1141C that at least partially overlaps the light emitting device of the third sub-pixel P3 in a direction perpendicular to the surface of the base substrate 101. In a direction parallel to the surface of the base substrate 101, the planar shape of the third color film pattern 1141C is different from the planar shapes of the first color film pattern 1141A and the second color film pattern 1141B, and the area of ​​the third color film pattern 1141C is larger than the area of ​​the first color film pattern 1141A and the area of ​​the second color film pattern 1141B. For example, the irregular planar shape of the third color film pattern 1141C fully realizes the light filtering effect.

[0089] For example, in some embodiments, the range of the ratio between the area of ​​the first color film pattern 1141A, the area of ​​the second color film pattern 1141B, and the area of ​​the third color film pattern 1141C is (1-1.5):1:(1-1.6), such as 1.2:1:1.1 or 1.4:1:1.3.

[0090] 3, the plurality of color film patterns 1141 further includes a fourth color film pattern 1141D that at least partially overlaps the light-emitting device of the fourth sub-pixel P4 in a direction perpendicular to the surface of the base substrate 101. In a direction parallel to the surface of the base substrate 101, the planar shape of the fourth color film pattern 1141D is substantially the same as the planar shape of the second color film pattern 1141B, and the area of ​​the fourth color film pattern 1141D is substantially equal to the area of ​​the second color film pattern 1141D.

[0091] For example, the planar shape of the fourth color film pattern 1141D is approximately semi-elliptical, and its area is approximately equal to the area of ​​the second color film pattern 1141D, for example, the difference between the area of ​​the fourth color film pattern 1141D and the area of ​​the second color film pattern 1141D is less than 10% of the area of ​​the second color film pattern 1141D.

[0092] In the embodiment of the present disclosure, the black matrix layer 113 can absorb light incident on the display substrate, reduce the reflectance of the display substrate to external light, and improve the display effect of the display substrate. By coating the color film layer 114 on the black matrix layer 113, the color film layer 114 can perform secondary absorption of the light incident on the display substrate, thereby further reducing the reflectance of the display substrate to external light, and improve the display effect of the display substrate. Tests on the multiple color film patterns 1141 shown in Figure 3 have shown that, when the multiple color film patterns 1141 are distributed in the shapes and sizes shown in Figure 3, they can fully achieve the light filtering and light reflecting effects, and improve the display effect of the display substrate.

[0093] For example, in some embodiments, as shown in FIG. 3, the fourth color film pattern 1141D partially overlaps the fourth light-transmitting sub-opening 1132D in the direction perpendicular to the surface of the base substrate 101.

[0094] For example, in some examples, as shown in FIG. 3, the horizontal size 1141A-1 of the first color film pattern 1141A corresponding to the first subpixel P1 is 27 μm to 33 μm, such as 28 μm, 29 μm, or 30 μm, and the vertical size 1141A-2 is 30 μm to 35 μm, such as 32 μm, 33 μm, or 34 μm. The horizontal size 1141B-1 of the second color film pattern 1141B corresponding to the second subpixel P2 is 20 μm to 25 μm, such as 21 μm, 22 μm, or 23 μm, and the vertical size 1141B-2 is 23 μm to 28 μm, such as 25 μm, 26 μm. or 27 μm, etc., the horizontal size 1141C-1 of the third color film pattern 1141C corresponding to the third subpixel P3 is 32 μm to 38 μm, for example, 34 μm, 35 μm, or 36 μm, etc., and the vertical size 1141C-2 is 35 μm to 45 μm, for example, 38 μm, 40 μm, or 42 μm, etc., the horizontal size 1141D-1 of the fourth color film pattern 1141D corresponding to the fourth subpixel P4 is 20 μm to 25 μm, for example, 21 μm, 22 μm, or 23 μm, etc., and the vertical size 1141D-2 is 23 μm to 28 μm, for example, 25 μm, 26 μm, or 27 μm, etc.

[0095] For example, the minimum distance between the edges of the plurality of color film patterns 1141 and the edges of the plurality of second light-transmitting openings 1132 is 1 μm to 5 μm. For example, as shown in FIG. 3, for color film patterns 1141 and second light-transmitting openings 1132 that are at least partially adjacent to each other, there is a gap between the color film pattern 1141 and the second light-transmitting openings 1132, and the minimum distance between the edge of the color film pattern 1141 and the edge of the second light-transmitting opening 1132 is 1 μm to 5 μm, thereby preventing the color film pattern 1141 from filtering light passing through the second light-transmitting openings 1132.

[0096] For example, as shown in Figures 2A and 2B, the display substrate may further include a planarization layer 109 disposed on one side of the driving circuit layer 102 away from the base substrate 101, and a pixel definition layer 108 disposed on one side of the planarization layer 109 away from the base substrate 101, wherein the pixel definition layer 108 includes a plurality of sub-pixel openings 1081, and the light emitting device EM includes a first electrode layer 104, a light emitting material layer 105, and a second electrode layer 106 stacked in order in a direction away from the base substrate 101, wherein the first electrode layer 104 is disposed on one side of the planarization layer 109 away from the base substrate 101, the pixel definition layer 108 is disposed on one side of the first electrode layer 104 away from the base substrate 101, and the plurality of sub-pixel openings 1081 respectively expose the first electrode layers 104 of the light emitting devices EM of the plurality of sub-pixels.

[0097] 4 is a schematic plan view of a plurality of subpixel openings in a pixel definition layer, a plurality of first light-transmitting openings in a black matrix layer, and a plurality of second light-transmitting openings, and as shown in FIG. 4, for one first light-transmitting opening 1131 and one subpixel opening 1081 corresponding to the same subpixel, the planar shape of the first light-transmitting opening 1131 is substantially the same as the planar shape of the subpixel opening 1081. For example, because the materials of the black matrix layer and the pixel definition layer are different and the processes for forming the first light-transmitting opening 1131 and the subpixel opening 1081 may also be different, in an actual product, the planar shape of the first light-transmitting opening 1131 may be slightly different from the planar shape of the subpixel opening 1081, but the general shapes are the same.

[0098] For example, as shown in FIG. 4 , the orthogonal projection of the sub-pixel opening 1081 on the base substrate 101 is located within the orthogonal projection of the first light-transmitting opening 1131 on the base substrate 101; or, as shown in FIG. 3 , the orthogonal projection of the sub-pixel opening 1081 on the base substrate 101 completely overlaps with the orthogonal projection of the first light-transmitting opening 1131 on the base substrate 101; that is, the overlapping area between the orthogonal projection of the sub-pixel opening 1081 on the base substrate 101 and the orthogonal projection of the first light-transmitting opening 1131 on the base substrate 101 is 90% or more of the area of ​​the orthogonal projection of the sub-pixel opening 1081 on the base substrate 101; and in this case, the planar shape and size of the sub-pixel opening 1081 are approximately the same as those of the first light-transmitting opening 1131.

[0099] For example, as shown in FIG. 4, the horizontal size 1131A-1 of the first light-transmitting opening corresponding to the first subpixel P1 is 15 μm to 20 μm, such as 17 μm, 18 μm, or 19 μm, and the vertical size 1131A-2 is 25 μm to 30 μm, such as 26 μm, 27 μm, or 28 μm. The horizontal size 1131B-1 of the first light-transmitting opening corresponding to the second subpixel P2 is 12 μm to 18 μm, such as 14 μm, 15 μm, or 16 μm, and the vertical size 1131B-2 is 15 μm to 20 μm, such as 17 μm, 18 μm, or 19 μm. The horizontal size 1131C-1 of the first light-transmitting opening corresponding to the third subpixel P3 is 20 μm to 25 μm, for example, 22 μm, 23 μm, or 24 μm, and the vertical size 1131C-2 is 30 μm to 35 μm, for example, 32 μm, 33 μm, or 34 μm, and the horizontal size 1131D-1 of the first light-transmitting opening corresponding to the fourth subpixel P4 is 10 μm to 18 μm, for example, 11 μm, 15 μm, or 16 μm, and the vertical size 1131D-2 is 15 μm to 20 μm, for example, 17 μm, 18 μm, or 19 μm.

[0100] For example, as shown in FIG. 4, the second light-transmitting opening (i.e., the first light-transmitting sub-opening) corresponding to the first subpixel P1 has a maximum horizontal size 1132A-1 of 6 μm to 10 μm, such as 7 μm, 8 μm, or 9 μm, and a maximum vertical size 1132A-2 of 8 μm to 12 μm, such as 9 μm, 10 μm, or 11 μm. The second light-transmitting opening (i.e., the second light-transmitting sub-opening) corresponding to the second subpixel P2 has a maximum horizontal size 1132B-1 of 3 μm to 6 μm, such as 4 μm, 4.5 μm, or 5 μm, and a maximum vertical size 1132B-2 of 2 μm to 5 μm, such as 3 μm, 3.5 μm, or 4 μm. The maximum horizontal size 1132C-1 of the second light-transmitting opening (i.e., the third light-transmitting sub-opening) corresponding to the third subpixel P3 is 6 μm to 10 μm, for example, 7 μm, 8 μm, or 9 μm, and the maximum vertical size 1132C-2 is 8 μm to 12 μm, for example, 9 μm, 10 μm, or 11 μm, and the maximum horizontal size 1131D-1 of the second light-transmitting opening (i.e., the fourth light-transmitting sub-opening) corresponding to the fourth subpixel P4 is 6 μm to 10 μm, for example, 7 μm, 8 μm, or 9 μm, and the maximum vertical size 1131D-2 is 8 μm to 12 μm, for example, 9 μm, 10 μm, or 11 μm.

[0101] For example, in different embodiments, the shapes of the second light-transmitting openings may be slightly different between the embodiment shown in Fig. 3 and the embodiment shown in Fig. 4, but the size ranges can all refer to Fig. 4 and the above description. Compared to the embodiment shown in Fig. 3, the second light-transmitting openings in the embodiment shown in Fig. 4 do not communicate with the first light-transmitting openings, which provides a better light leakage prevention effect.

[0102] 3 and 4, for one color film pattern 1141 and one subpixel opening 1081 corresponding to the same subpixel, the planar shape of color film pattern 1141 is different from the planar shape of subpixel opening 1081. For example, at least some edges of the plurality of second light-transmitting openings 1132 are parallel to at least some edges of the adjacent color film pattern 1141. For example, in the portion shown by the dashed-line frame in FIG. 3, some edges of second light-transmitting openings 1132 are parallel to some edges of the adjacent color film pattern 1141.

[0103] 5 shows a schematic plan view of one first light-transmitting opening 1131, one subpixel opening 1081, and one first electrode layer 104 corresponding to one subpixel. As shown in FIGS. 1, 2A, and 5, the first electrode layer 104 includes a body portion 1041 and a connecting portion 1042, the connecting portion 1042 is configured to be electrically connected to a pixel driving circuit, and the orthogonal projection of the subpixel opening 1081 on the base substrate 101 is located inside the orthogonal projection of the body portion 1041 on the base substrate 101, so that the subpixel opening 1081 can fully expose the body portion 1041 of the first electrode layer 104.

[0104] For example, the first light-transmitting opening 1131, the sub-pixel opening 1081 and the main body 1041 of the first electrode layer 104 have arc-shaped edges, and for example, in a direction parallel to the plate surface of the base substrate 101, the planar shapes of the first light-transmitting opening 1131, the sub-pixel opening 1081 and the main body 1041 of the first electrode layer 104 are approximately elliptical (also called mango-shaped), semi-elliptical, circular, semicircular, track-shaped or half-track-shaped, etc., or modified shapes thereof.

[0105] The first light-transmitting opening 1131 having an arc-shaped edge can reduce or even eliminate the color separation phenomenon on the display substrate caused by diffraction of external light at the edge of the first light-transmitting opening in the black matrix layer, thereby further improving the display effect of the display substrate. By setting the shapes of the sub-pixel opening 1081 and the body portion 1041 of the first electrode layer 104 to be the same as the shape of the first light-transmitting opening 1131, the display substrate can fully utilize the light emitted from the sub-pixel light-emitting device for display and the electrical signal provided by the first electrode layer 104, thereby improving the light output rate of the display substrate and saving energy consumption.

[0106] 2A and 2B , in some embodiments, the display substrate may further include structures such as a spacer 107 disposed on the pixel definition layer 108 and an encapsulation layer EN disposed on the sub-pixel light-emitting device EM. For example, the encapsulation layer EN may include multiple sub-encapsulation layers to improve its encapsulation effect. For example, the encapsulation layer EN may be a composite encapsulation layer including a first inorganic encapsulation layer 110, a second organic encapsulation layer 111, and a third inorganic encapsulation layer 112. For example, the first inorganic encapsulation layer 110 and the second inorganic encapsulation layer 112 may be formed using inorganic materials such as silicon nitride, silicon oxide, and silicon oxynitride, and the first organic encapsulation layer 111 may be formed using organic materials such as polyimide (PI) and epoxy resin. The composite encapsulation layer can provide multiple protection for the functional structures of the display panel and achieve a better encapsulation effect.

[0107] For example, in some embodiments, as shown in FIG. 6 , the display substrate may further include a touch structure disposed between the light emitting device layer and the black matrix layer 113, and the touch structure at least partially overlaps the connection portions of the first electrode layers of at least some of the light emitting devices of the plurality of subpixels. The touch structure may be any type of touch structure, such as a self-capacitance touch structure or a mutual-capacitance touch structure. For example, both the self-capacitance touch structure and the mutual-capacitance touch structure include at least one conductive layer. The embodiments of the present disclosure are not limited to a specific type and structure of the touch structure.

[0108] For example, in some embodiments, the touch structure includes a first conductive layer M1, as shown in Fig. 6. For example, the touch structure may further include a base B, where the first conductive layer M1 is disposed on the base B and coupled to the encapsulation layer EN via the base B. For example, Fig. 7A shows a schematic plan view of the first conductive layer M1, and as shown in Fig. 7A, the first conductive layer M1 includes a first pattern formed by a plurality of first wirings 11.

[0109] For example, as shown in FIG. 6, the touch structure further includes a second conductive layer M2 located on one side of the first conductive layer M1 away from the base substrate 101, and FIG. 7B shows a schematic plan view of the second conductive layer M2. As shown in FIG. 7B, the second conductive layer M2 includes a second pattern formed by a plurality of second wirings 12.

[0110] For example, as shown in FIG. 6, an insulating layer I is provided between a first conductive layer M1 and a second conductive layer M2. As shown in FIG. 7A, the dashed circle portions of the plurality of first wirings 11 are configured to be electrically connected to a plurality of second wirings 12, for example, via via holes in the insulating layer I. As shown in FIG. 7B, the dashed circle portions of the plurality of second wirings 12 are configured to be electrically connected to a plurality of first wirings 11, for example, via via holes in the insulating layer I. For example, FIG. 8 is a schematic diagram showing a plurality of first wirings 11 and a plurality of second wirings 12 stacked and electrically connected, and FIG. 8 shows four electrical connection points O, and the insulating layer I has via holes at the positions of the four electrical connection points O accordingly.

[0111] At this time, the multiple first wirings 11 and the multiple second wirings 12 are overlapped in a "dot-like" manner and have a small overlapping area, so that the multiple first wirings 11 and the multiple second wirings 12 do not generate parasitic capacitance, or the generated parasitic capacitance is negligibly small, thereby improving the touch accuracy and touch sensitivity of the touch structure, further improving the touch effect, and improving the user experience.

[0112] 9A is a schematic plan view of the stack of the first conductive layer M1, the second conductive layer M2, and the plurality of subpixels. As shown in FIG. 9A, in a direction perpendicular to the surface of the base substrate 101, the first pattern of the first conductive layer M1 at least partially overlaps the connection portions 1042 of the first electrode layers 104 of the light-emitting devices of at least some of the subpixels, and the second pattern of the second conductive layer M2 at least partially overlaps the connection portions 1042 of the first electrode layers 104 of the light-emitting devices of at least some of the subpixels.

[0113] For example, in some embodiments, as shown in FIG. 9A, in a direction perpendicular to the surface of the base substrate 101, the first pattern of the first conductive layer M1 at least partially overlaps with the connection portion 1042A of the first electrode layer 104 of the light-emitting device of the first subpixel P1 (e.g., the red subpixel), and at least partially overlaps with the connection portion 1042C of the first electrode layer 104 of the light-emitting device of the third subpixel P3 (e.g., the blue subpixel).

[0114] For example, in some embodiments, as shown in FIG. 9A, in a direction perpendicular to the surface of the base substrate 101, the second pattern of the second conductive layer M2 at least partially overlaps with the connection portion 1042A of the first electrode layer 104 of the light-emitting device of the first subpixel P1 (e.g., red subpixel), at least partially overlaps with the connection portion 1042B of the first electrode layer 104 of the light-emitting device of the second subpixel P2 (e.g., green subpixel), and at least partially overlaps with the connection portion 1042C of the first electrode layer 104 of the light-emitting device of the third subpixel P3 (e.g., blue subpixel).

[0115] For example, as shown in FIG. 9A, neither the first pattern of the first conductive layer M1 nor the second pattern of the second conductive layer M2 overlaps with the connection portion 1042D of the first electrode layer 104 of the light-emitting device of the fourth sub-pixel P4 (e.g., a green sub-pixel).

[0116] 9A , in some embodiments, the first pattern of the first conductive layer M1 and the second pattern of the second conductive layer M2 do not overlap with the second light-transmitting openings 1132 in a direction perpendicular to the surface of the base substrate 101. For example, the minimum distance between the first pattern of the first conductive layer M1 and the second pattern of the second conductive layer M2 and the second light-transmitting openings 1132 is greater than 2 μm, thereby preventing the second light-transmitting openings 1132 from exposing the first pattern of the first conductive layer M1 and the second pattern of the second conductive layer M2. For example, in some examples, the minimum distance between the first pattern of the first conductive layer M1 and the second pattern of the second conductive layer M2 and the second light-transmitting openings 1132 is 2 μm to 5 μm, such as 2.5 μm, 3 μm, or 4 μm.

[0117] For example, in some embodiments, Figure 9B shows a schematic plan view of the stacking of the plurality of color film patterns with the first and second patterns. As shown in Figure 9B, at least some of the plurality of color film patterns 1141 partially overlap the first and second patterns in a direction perpendicular to the surface of the base substrate.

[0118] For example, in some embodiments, as shown in FIG. 9B , at least some edges of the plurality of color film patterns 1141 are parallel to some of the plurality of first wirings 11 and the plurality of second wirings 12, e.g., in each portion shown by the dashed circle in the drawing, some edges of the color film pattern 1141 are parallel to some of the first wirings 11 and the plurality of second wirings 12.

[0119] 9B , in some embodiments, the area of ​​the subpixel opening 1081 corresponding to the first subpixel P1 is larger than the area of ​​the subpixel opening 1081 corresponding to the second subpixel P2 in the direction parallel to the surface of the base substrate, and the overlapping area between the first color film pattern 1141 corresponding to the first subpixel P1 and the first and second patterns is larger than the overlapping area between the second color film pattern 1141 corresponding to the second subpixel P2 and the first and second patterns in the direction perpendicular to the surface of the base substrate. That is, the larger the subpixel opening 1081, the larger the overlapping area between the color film pattern corresponding to the subpixel and the first and second patterns.

[0120] For example, in some embodiments, the line width of the multiple first wirings 11 (i.e., the size in the direction perpendicular to the extension direction of the wiring) may be 2 μm to 5 μm, such as 2.5 μm, 3 μm, or 4 μm. The line width of the multiple second wirings 12 may be 2 μm to 5 μm, such as 2.5 μm, 3 μm, or 4 μm. The line width of the multiple first wirings 11 may be the same as or different from the line width of the multiple second wirings 12.

[0121] For example, as shown in FIG. 9A , the vertical length 11-1 of the first portion 11A of the first wiring 11, which passes through the first subpixel P1 and the third subpixel P3 in the vertical direction, is 110 μm to 125 μm, such as 117 μm, 120 μm, or 122 μm. The vertical length 11-2 of the second portion 11B of the first wiring 11, which passes through the third subpixel P3 and the first subpixel P1 in the vertical direction, is 110 μm to 120 μm, such as 114 μm, 115 μm, or 116 μm. The length 11-3 of the horizontally extending portion of the first wiring 11 between the second portion 11B is 15 μm to 25 μm, for example, 18 μm, 20 μm, or 22 μm, the length 11-4 of the horizontally extending portion of the first wiring 11 on the left side of the first portion 11A is 15 μm to 20 μm, for example, 16 μm, 17 μm, or 18 μm, and the length 11-5 of the horizontally extending portion of the first wiring 11 on the right side of the second portion 11B is 5 μm to 10 μm, for example, 7 μm, 8 μm, or 9 μm.

[0122] For example, as shown in FIG. 9A, the vertical length 12-1 of the first portion 12A of the second wiring 12 that penetrates the third subpixel P3 in the vertical direction is 50 μm to 60 μm, such as 55 μm, 57 μm, or 59 μm, and the horizontal length 12-2 of the second portion 12B of the second wiring 12 that penetrates the third subpixel P3, the first subpixel P1, and the second subpixel P2 in the horizontal direction is 75 μm to 85 μm, such as 77 μm, 78 μm, or 79 μm.

[0123] For example, FIGS. 10A to 10C are schematic plan views of the first electrode layers of the first sub-pixel P1, the second sub-pixel P2, the third sub-pixel P3, and the fourth sub-pixel P4, respectively.

[0124] For example, in some embodiments, as shown in FIG. 10A , the first electrode layer of the first subpixel P1 (e.g., the red subpixel) has a vertical length P1-1 of 40 μm to 50 μm in the drawing, such as 43 μm, 45 μm, or 47 μm, the first electrode layer of the first subpixel P1 has a horizontal width P1-2 of 20 μm to 25 μm in the drawing, such as 22 μm, 23 μm, or 24 μm, and the connection portion of the first electrode layer has a horizontal width P1-3 of 6 μm to 10 μm in the drawing, such as 7 μm, 8 μm, or 9 μm.

[0125] For example, in some embodiments, as shown in FIG. 10B , the first electrode layer of the second subpixel P2 (e.g., a green subpixel) has a vertical length P2-1 of 25 μm to 35 μm in the drawing, such as 28 μm, 30 μm, or 31 μm, the first electrode layer of the second subpixel P2 has a horizontal width P2-2 of 17 μm to 22 μm in the drawing, such as 18 μm, 19 μm, or 20 μm, and the connection portion of the first electrode layer has a horizontal width P2-3 of 6 μm to 10 μm in the drawing, such as 7 μm, 8 μm, or 9 μm.

[0126] 10B , the first electrode layer of the fourth subpixel P4 (e.g., green subpixel) and the first electrode layer of the second subpixel P2 (e.g., green subpixel) have substantially the same shape and size. For example, the first electrode layer of the fourth subpixel P4 (e.g., green subpixel) has a vertical length P4-1 of 25 μm to 35 μm, e.g., 28 μm, 30 μm, or 31 μm, in the drawing. The first electrode layer of the fourth subpixel P4 has a horizontal width P4-2 of 17 μm to 22 μm, e.g., 18 μm, 19 μm, or 20 μm, in the drawing. The connection portion of the first electrode layer has a horizontal width P4-3 of 6 μm to 10 μm, e.g., 7 μm, 8 μm, or 9 μm.

[0127] For example, in some embodiments, as shown in FIG. 10C , the first electrode layer of the third subpixel P3 (e.g., a blue subpixel) has a vertical length P3-1 of 45 μm to 55 μm in the drawing, such as 48 μm, 49 μm, or 50 μm, the first electrode layer of the third subpixel P3 has a horizontal width P3-2 of 25 μm to 30 μm in the drawing, such as 27 μm, 28 μm, or 29 μm, and the connection portion of the first electrode layer has a horizontal width P3-3 of 6 μm to 10 μm in the drawing, such as 7 μm, 8 μm, or 9 μm.

[0128] The structure and circuit arrangement of each functional layer of the display substrate according to the embodiment of the present disclosure will be described in detail below by way of a specific example, in which the sub-pixel uses a 7T1C pixel driving circuit to drive the light emitting device EM.

[0129] For example, Figure 11A shows a circuit diagram of a 7T1C pixel circuit, which includes a driving circuit 122, a data writing circuit 126, a compensation circuit 128, a memory circuit 127, a first light-emitting control circuit 123, a second light-emitting control circuit 124, and a reset circuit 129.

[0130] For example, the driving circuit 122 includes a control terminal 131, a first terminal 132 and a second terminal 133, which are configured to control the driving current flowing through the light emitting device EM, and the control terminal 131 of the driving circuit 122 is connected to a first node N1, the first terminal 132 of the driving circuit 122 is connected to a second node N2, and the second terminal 133 of the driving circuit 122 is connected to a third node N3.

[0131] For example, the data write circuit 126 includes a control terminal, a first terminal and a second terminal, the control terminal is configured to receive a first scan signal, the first terminal is configured to receive a data signal, and the second terminal is connected to the first terminal 132 (second node N2) of the drive circuit 122 and is configured to write the data signal to the first terminal 132 of the drive circuit 122 in response to the first scan signal Ga1. For example, the first terminal of the data write circuit 126 is connected to the data line 12 to receive the data signal, and the control terminal is connected to the scan line 11 to receive the first scan signal Ga1.

[0132] For example, in a data writing phase, the data writing circuit 126 can be turned on in response to a first scanning signal Ga1, thereby writing a data signal to the first terminal 132 (second node N2) of the driving circuit 122, and storing the data signal in the memory circuit 127, thereby generating a driving current that drives the light-emitting device EM to emit light based on the data signal, for example, in an emission phase.

[0133] For example, the compensation circuit 128 includes a control terminal, a first terminal and a second terminal, the control terminal is configured to receive a second scanning signal Ga2, the first terminal and the second terminal are electrically connected to the control terminal 131 and the second terminal 133 of the driving circuit 122, respectively, and the compensation circuit is configured to perform threshold compensation for the driving circuit 120 in response to the second scanning signal.

[0134] For example, the memory circuit 127 is electrically connected to the control terminal 131 and the first voltage terminal VDD of the driving circuit 122 and is configured to store the data signal written by the data writing circuit 126. For example, in a data writing and compensation stage, the compensation circuit 128 can be turned on in response to the second scanning signal Ga2, thereby storing the data signal written by the data writing circuit 126 in the memory circuit 127. For example, the compensation circuit 128 can electrically connect the control terminal 131 and the second terminal 133 of the driving circuit 122 simultaneously in the data writing and compensation stage, and can also store information related to the threshold voltage of the driving circuit 122 in the memory circuit accordingly, so that, for example, in a light-emitting stage, the stored data signal and threshold voltage can be used to control the driving circuit 122 and compensate the output of the driving circuit 122.

[0135] For example, the first light-emitting control circuit 123 is connected to the first terminal 132 (second node N2) of the driving circuit 122 and the first voltage terminal VDD, and is configured to apply the first power supply voltage of the first voltage terminal VDD to the first terminal 132 of the driving circuit 122 in response to the first light-emitting control signal. For example, as shown in FIG. 11A, the first light-emitting control circuit 123 is connected to the first light-emitting control terminal EM1, the first voltage terminal VDD, and the second node N2.

[0136] For example, the second light-emitting control circuit 124 is connected to the second light-emitting control terminal EM2, the first terminal 510 of the light-emitting device EM and the second terminal 132 of the driving circuit 122, and is configured to apply a driving current to the light-emitting device EM in response to the second light-emitting control signal.

[0137] For example, in the light-emitting stage, the second light-emitting control circuit 123 is turned on in response to the second light-emitting control signal provided from the second light-emitting control terminal EM2, so that the driving circuit 122 can apply a driving current to the light-emitting device EM via the second light-emitting control circuit 123 to make it emit light; in the non-light-emitting stage, the second light-emitting control circuit 123 is turned off in response to the second light-emitting control signal, so that the current does not flow through the light-emitting device EM to make it emit light, and the contrast of the display device can be improved accordingly.

[0138] Also, for example, during the initialization stage, the second light-emitting control circuit 124 can be turned on in response to the second light-emitting control signal, thereby performing a reset operation on the driving circuit 122 and the light-emitting device EM in combination with the reset circuit.

[0139] For example, the second light-emitting control signal EM2 may be the same as or different from the first light-emitting control signal EM1, and for example, both may be connected to the same or different signal output terminals.

[0140] For example, the reset circuit 129 is connected to the reset voltage terminal Vinit and the first terminal 134 (fourth node N4) of the light emitting device EM and is configured to apply the reset voltage to the first terminal 134 of the light emitting device EM in response to a reset signal. In other examples, as shown in FIG. 11A , the reset signal may also be applied to the control terminal 131 of the driving circuit, i.e., the first node N1. For example, the reset signal may be the second scanning signal, and the reset signal may also be another signal synchronized with the second scanning signal, and the embodiments of the present disclosure are not limited thereto. For example, as shown in FIG. 11A , the reset circuit 129 is respectively connected to the first terminal 134 of the light emitting device EM, the reset voltage terminal Vinit, and the reset control terminal Rst (reset control line). For example, during the initialization phase, the reset circuit 129 can be turned on in response to the reset signal, thereby applying a reset voltage to the first terminal 134 and the first node N1 of the light emitting device EM, and performing a reset operation on the driving circuit 122, the compensation circuit 128, and the light emitting device EM to eliminate the effects of the previous light emitting phase.

[0141] For example, the light emitting device EM includes a first terminal 134 and a second terminal 135, where the first terminal 134 of the light emitting device EM is configured to receive a driving current from the second terminal 133 of the driving circuit 122, and the second terminal 135 of the light emitting device EM is configured to be connected to the second voltage terminal VSS. For example, in one example, as shown in FIG. 11A , the first terminal 134 of the light emitting device EM may be connected to the third node N3 via the second light emitting circuit 124. The embodiments of the present disclosure include, but are not limited to, this scenario. For example, the light emitting device EM may be an OLED of various types, such as a top-emitting type, a bottom-emitting type, or a double-sided emitting type, and may emit red, green, blue, or white light, and the first electrode layer and the second electrode layer of the OLED are the first terminal 134 and the second terminal 135 of the light emitting device, respectively. The embodiments of the present disclosure do not limit the specific structure of the light emitting device.

[0142] In the description of the embodiments of the present disclosure, the first node N1, the second node N2, the third node N3, and the fourth node N4 do not necessarily represent components that actually exist, but represent junctions where related circuits in the circuit diagram connect.

[0143] In the description of the embodiments of the present disclosure, the symbol Vd not only indicates a data signal terminal but also the level of the data signal, similarly, the symbols Ga1 and Ga2 not only indicate the first and second scanning signals but also the first and second scanning signal terminals, Rst not only indicates a reset control terminal but also the reset signal, Vinit not only indicates a reset voltage terminal but also the reset voltage, VDD not only indicates a first voltage terminal but also the first power supply voltage, and VSS not only indicates a second voltage terminal but also the second power supply voltage. The following embodiments are similar to these and will not be described again.

[0144] Fig. 11B is a circuit diagram of a specific example of the pixel circuit shown in Fig. 11A. As shown in Fig. 11B, the pixel circuit includes first to seventh transistors T1, T2, T3, T4, T5, T6, and T7 and a storage capacitor Cst. For example, the first transistor T1 is used as a drive transistor, and the other second to seventh transistors are used as switch transistors.

[0145] 11B, the driving circuit 122 may be realized as a first transistor T1. The gate of the first transistor T1 is connected to a control terminal 131 of the driving circuit 122 and a first node N1, the first pole of the first transistor T1 is connected to a first terminal 132 of the driving circuit 122 and a second node N2, and the second pole of the first transistor T1 is connected to a second terminal 133 of the driving circuit 122 and a third node N3.

[0146] 11B, the data write circuit 126 may be implemented as a second transistor T2. The gate of the second transistor T2 is connected to the first scan line (first scan signal terminal Ga1) to receive the first scan signal, the first electrode of the second transistor T2 is connected to the data line (data signal terminal Vd) to receive the data signal, and the second electrode of the second transistor T2 is connected to the first terminal 132 (second node N2) of the driving circuit 122. For example, the second transistor T2 is a P-type transistor, e.g., a thin film transistor whose active layer is made of low-temperature doped polycrystalline silicon.

[0147] 11B, the compensation circuit 128 may be realized as a third transistor T3. The gate of the third transistor T3 is connected to the second scan line (second scan signal terminal Ga2) and configured to receive the second scan signal, the first pole of the third transistor T3 is connected to the control terminal 131 (first node N1) of the driving circuit 122, and the second pole of the third transistor T3 is connected to the second terminal 133 (third node N3) of the driving circuit 122.

[0148] For example, as shown in FIG. 11B, the memory circuit 127 may be realized as a storage capacitor Cst, which includes a first capacitor electrode C1 and a second capacitor electrode C2, where the first capacitor electrode C1 is connected to a first voltage terminal VDD and the second capacitor electrode C2 is connected to a control terminal 131 of the drive circuit 122.

[0149] 11B, the first light-emitting control circuit 123 may be realized as a fourth transistor T4. A gate of the fourth transistor T4 is connected to a first light-emitting control line (first light-emitting control terminal EM1) to receive a first light-emitting control signal, a first electrode of the fourth transistor T4 is connected to a first voltage terminal VDD to receive a first power supply voltage, and a second electrode of the fourth transistor T4 is connected to a first terminal 132 (second node N2) of the drive circuit 122.

[0150] For example, the light emitting device EM may be specifically realized as a light emitting diode (OLED), with its first electrode layer (here, the anode) connected to the fourth node N4 and configured to receive a driving current from the second terminal 133 of the driving circuit 122 via the second light emitting control circuit 124, and its second electrode layer (here, the cathode) of the light emitting device EM connected to the second voltage terminal VSS and configured to receive a second power supply voltage. For example, the second voltage terminal may be grounded, i.e., VSS may be 0V.

[0151] For example, the second light-emitting control circuit 124 may be realized as a fifth transistor T5. The gate of the fifth transistor T5 is connected to the second light-emitting control line (second light-emitting control terminal EM2) to receive the second light-emitting control signal, the first electrode of the fifth transistor T5 is connected to the second terminal 133 (third node N3) of the driving circuit 122, and the second electrode of the fifth transistor T5 is connected to the first terminal 134 (fourth node N4) of the light-emitting device EM.

[0152] For example, the reset circuit 129 may include a first reset circuit and a second reset circuit, where the first reset circuit is configured to apply a first reset voltage Vini1 to the first node N1 in response to a first reset signal Rst1, and the second reset circuit is configured to apply a second reset voltage Vini2 to the fourth node N4 in response to a second reset signal Rst2. For example, as shown in FIG. 11B , the first reset circuit is implemented as a sixth transistor T6, and the second reset circuit is implemented as a seventh transistor T7. A gate of the sixth transistor T6 is connected to the first reset control terminal Rst1 to receive the first reset signal Rst1, a first electrode of the sixth transistor T6 is connected to the first reset voltage terminal Vinit1 to receive the first reset voltage Vinit1, and a second electrode of the sixth transistor T6 is connected to the first node N1. The gate of the seventh transistor T7 is connected to the second reset control terminal Rst2 and configured to receive the second reset signal Rst2, the first electrode of the seventh transistor T7 is connected to the second reset voltage terminal Vinit2 and configured to receive the second reset voltage Vinit2, and the second electrode of the seventh transistor T7 is connected to the fourth node N4.

[0153] The transistors used in the embodiments of the present disclosure may be thin film transistors, field effect transistors, or other switching devices with the same characteristics. In the embodiments of the present disclosure, thin film transistors are used as examples. The source and drain of the transistors used here may be structurally symmetrical, so the source and drain may be structurally indistinguishable. In the embodiments of the present disclosure, in order to distinguish between the two poles of the transistor other than the gate, one pole will be referred to as the first pole and the other pole as the second pole.

[0154] 1, the first signal line S1 is an emission control line EMT, which is used to transmit the first emission control signal EM1 and the second emission control signal EM2, and the second signal line S2 is a reset voltage line VNT, which is used to transmit the first reset voltage Vinit1 and the second reset voltage Vini2. For example, one side of the reset voltage line VNT away from the emission control line EMT further includes a reset control line RST, which is used to transmit the first reset signal Rst1 and the second reset signal Rst2.

[0155] The layout design of the above pixel driving circuit will be introduced in detail below.

[0156] For example, FIG. 12 shows a schematic diagram of a semiconductor layer of the display substrate, which is used to form the active layers of thin film transistors T1 to T7 of pixel driving circuits of multiple sub-pixels. FIG. 12 shows pixel driving circuits for two rows of sub-pixels. Below, we will take the pixel driving circuits of four directly adjacent sub-pixels (i.e., the first sub-pixel 100a, the second sub-pixel 100b, the third sub-pixel 100c, and the fourth sub-pixel 100d) as an example. The dashed-line frames in the drawing indicate the areas where the pixel driving circuits of each sub-pixel are located. The embodiments of the present disclosure are not limited to this layout.

[0157] For example, a first gate insulating layer is further disposed on the semiconductor layer, which is not shown, but refer to the first gate insulating layer 1024 in FIG. 2A or FIG.

[0158] For example, FIG. 13A shows a schematic diagram of a first gate metal layer of a display substrate, which is disposed on a first gate insulating layer, and FIG. 13B shows a schematic diagram of the stack of the first gate metal layer and a semiconductor layer of the display substrate.

[0159] 13A and 13B, the first gate metal layer includes a plurality of emission control lines EMT, a plurality of reset control lines RST, a plurality of scan lines GATE, and a plurality of first capacitor electrodes C1 of the storage capacitors Cst, and for example, overlapping portions of the emission control lines EMT, the reset control lines RST, the scan lines GATE, and the first capacitor electrodes C1 of the storage capacitors Cst with the active layers of the thin film transistors T1 to T7 form the gates of the thin film transistors T1 to T7. The plurality of emission control lines EMT, the plurality of reset control lines RST, and the plurality of scan lines GATE are electrically connected to the plurality of rows of sub-pixels in a one-to-one correspondence, thereby providing corresponding electrical signals.

[0160] For example, a second gate insulating layer is further disposed on the first gate metal layer, which is not shown, see the second gate insulating layer 1025 in FIG.

[0161] FIG. 14A shows a schematic diagram of the second gate metal layer of the display substrate, which is disposed on the second gate insulating layer, and FIG. 14B shows a schematic diagram of the stacking of the second gate metal layer of the display substrate with the first gate metal layer and the semiconductor layer.

[0162] 14A and 14B, the second gate metal layer includes a second capacitor electrode C2 of a storage capacitor Cst and a plurality of reset voltage lines VNT. The second capacitor electrode C2 of the storage capacitor Cst is at least partially overlapped with the first capacitor electrode C1, thereby forming a capacitor. The plurality of reset voltage lines VNT are electrically connected to a plurality of rows of subpixels in a one-to-one correspondence, thereby providing corresponding electrical signals.

[0163] For example, an interlayer insulating layer may be further disposed on the second gate metal layer, which is not shown, see the interlayer insulating layer 1026 in FIG. 2A and FIG.

[0164] Figure 15A shows a schematic diagram of the first source / drain metal layer of the display substrate, which is disposed on an interlayer insulating layer, and Figure 15B shows a schematic diagram of the stack of the first source / drain metal layer of the display substrate, the second gate metal layer, the first gate metal layer, and the semiconductor layer.

[0165] 15A and 15B, the first source-drain metal layer includes a plurality of first power supply lines VDD1. For example, the plurality of first power supply lines VDD1 are electrically connected to the plurality of columns of sub-pixels in a one-to-one correspondence to provide a first power supply voltage. For example, the first source-drain metal layer further includes a plurality of data lines DT. The plurality of data lines DT are electrically connected to the plurality of columns of sub-pixels in a one-to-one correspondence to provide a data signal. For example, the first source-drain metal layer further includes a plurality of connection electrodes CL for connecting the second capacitor electrode C2 to the first electrode of the third transistor T3, connecting the first electrode of the sixth transistor T6 to the reset voltage line VNT, connecting the second electrode of the fifth transistor T5 to the first electrode layer of the light emitting device, etc.

[0166] For example, a passivation layer and a planarization layer may be further disposed on the first source / drain metal layer, which are not shown, but refer to the passivation layer 1027 and the planarization layer 1091 in FIG. 2A and FIG.

[0167] Figure 16A shows a schematic diagram of the second source / drain metal layer of the display substrate, which is disposed on the planarization layer 1091, and Figure 16B shows a schematic diagram of the stack of the second source / drain metal layer of the display substrate with the first source / drain metal layer, the second gate metal layer, the first gate metal layer and the semiconductor layer.

[0168] 16A and 16B, the second source-drain metal layer includes a grid-shaped second power line VDD2, for example, the second power line VDD2 is electrically connected to the first power line VDD1, contributing to reducing the resistance on the power line, reducing the voltage drop on the power line, and contributing to uniformly transmitting the first power voltage to each subpixel of the display substrate. For example, the second source-drain metal layer may further include a connection electrode 1043 for connecting the first electrode layer of the light emitting device and the first electrode of the first transistor T1. For example, referring to FIG. 10B, the second power line VDD2 at least partially overlaps with the body portion 1042 of the first electrode layer 104 in a direction perpendicular to the surface of the base substrate.

[0169] For example, another planarization layer, i.e., planarization layer 109, is further disposed on the second source / drain metal layer. FIG. 17 shows a schematic plan view of the planarization layer. Referring to FIGS. 2A and 6, the planarization layer 109 has a plurality of via holes VA. At this time, the first electrode layer 104 is connected to the connection electrode 1043 through the via holes VA in the planarization layer 109.

[0170] For example, the via holes VA in the planarization layer 109 corresponding to the subpixels located in the same row are not aligned in a straight line. For example, as shown in Fig. 17, one first subpixel (e.g., red subpixel), one second subpixel (e.g., green subpixel), one third subpixel (e.g., blue subpixel), and one fourth subpixel (e.g., green subpixel) located in the same row and adjacent to each other correspond to via holes VA1 to VA4, respectively, and the via holes VA1 to VA4 are not aligned in a straight line.

[0171] By designing the multiple via holes VA in the planarization layer 109 so that they are not aligned in a straight line, the wiring of the pixel driving circuit can be avoided from one large light-transmitting region, and a light-transmitting portion with a sufficient area can be formed.

[0172] Figure 18A shows a schematic diagram of the first electrode material layer of the display substrate, which is disposed on a passivation layer 109, and Figure 18B shows a schematic diagram of the stack of the first electrode material layer of the display substrate with a second source / drain metal layer, a first source / drain metal layer, a second gate metal layer, a first gate metal layer and a semiconductor layer.

[0173] 18A and 18B, the first electrode material layer includes first electrode layers of light emitting devices EM of multiple sub-pixels, and the first electrode layers of the light emitting devices EM of the multiple sub-pixels are respectively connected to the connection electrode 1043 through multiple via holes VA in the planarization layer 109. For example, a light emitting material layer of the light emitting device EM is disposed on the first electrode layer, and a second electrode layer is disposed on the light emitting material layer.

[0174] For example, other functional layers such as an encapsulation layer, a black matrix layer, a protective cover plate 115, etc. may be further formed above the light emitting device EM, and will not be described again here.

[0175] For example, in embodiments of the present disclosure, the base substrate 101 may include a flexible insulating material such as polyimide (PI) or a rigid insulating material such as a glass substrate. For example, in some examples, the base substrate 101 may have a laminated structure in which multiple flexible layers and multiple barrier layers are alternately arranged. In this case, the flexible layers may include polyimide, and the barrier layers may include inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride. For example, the buffer layer 103 may include inorganic materials such as silicon nitride, silicon oxide, or silicon oxynitride. The active layer 1021 may be made of materials such as polycrystalline silicon and metal oxides, the first gate insulating layer 1024 and the second gate insulating layer 1025 may be made of inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride, the gate 1022 and the first capacitor electrode C1 may be made of metal materials such as copper, aluminum, titanium, cobalt, etc., and may be formed as a single layer structure or a multilayer structure, for example, a multilayer structure such as titanium / aluminum / titanium or molybdenum / aluminum / molybdenum, the second capacitor electrode C2 may be made of metal or alloy materials such as copper, aluminum, titanium, cobalt, etc., and the interlayer insulating The layer 1026 may be made of an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, the passivation layer 1027 may be made of an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, the source / drain electrodes 1023 and 1024 may be made of a metal material such as copper, aluminum, titanium, or cobalt, and may be formed as, for example, a single-layer structure or a multi-layer structure such as titanium / aluminum / titanium or molybdenum / aluminum / molybdenum, the first electrode layer 104 is, for example, an anode layer and includes a metal oxide such as ITO or IZO, or a metal such as Ag, Al, or Mo, or an alloy thereof, The material of the light-emitting material layer 105 may be an organic light-emitting material, and for example, a light-emitting material capable of emitting light of a certain color (e.g., red light, blue light, or green light) may be selected as the material of the light-emitting material layer 105 as needed. The second electrode layer 106 is, for example, a cathode layer, and includes a metal such as Mg, Ca, Li, or Al, or an alloy thereof, or a metal oxide such as IZO or ZTO, or an organic material having conductive properties such as PEDOT / PSS (poly3,4-ethylenedioxythiophene / polystyrene sulfonate).The planarization layer 109 (and planarization layer 1091), the pixel definition layer 108, and the photospacer 107 may be made of an organic insulating material such as polyimide. The protective cover plate 115 may be a transparent cover plate such as a glass cover plate. The embodiments of the present disclosure do not specifically limit the materials of each functional layer.

[0176] For example, in the embodiments of the present disclosure, the first conductive layer M1 and the second conductive layer M2 of the touch structure may be metal layers or transparent conductive layers, and the materials may include metal materials such as copper and aluminum, or transparent metal oxides such as ITO and IZO. The base B may include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, or an organic insulating material such as polyimide. The spacing insulating layer I may also include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, or an organic insulating material such as polyimide. For example, as shown in FIG. 6 , a protective insulating layer P may be further coated on the second conductive layer M2 of the touch structure, and the protective insulating layer P may also include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, or an organic insulating material such as polyimide, thereby protecting the second conductive layer M2. The embodiments of the present disclosure do not specifically limit other structures and materials of the touch structure.

[0177] At least one embodiment of the present disclosure provides a display device, and FIG. 19 shows a schematic cross-sectional view of the display device. As shown in FIG. 19, the display device includes a display substrate according to an embodiment of the present disclosure, and the display substrate shown in FIG. 6 is shown as an example in FIG. 19.

[0178] For example, in some embodiments, the display device further includes a textured touch surface S and an image sensor array 30, for example, the surface of the protective cover plate 115 is realized as the textured touch surface S. The image sensor array is disposed on one side of the driving circuit layer 102 away from the light emitting device layer, and includes a plurality of image sensors 31 (one is shown in the drawings as an example), which are configured to collect texture by receiving light emitted from the plurality of light emitting devices EM in the light emitting device layer and reflected by the texture (e.g., fingerprint, palm print, etc.) of the textured touch surface S, passing through the second light-transmitting openings 1132 and reaching the plurality of image sensors 31.

[0179] 19, the pixel driving circuits of the driving circuit layer include a plurality of light-transmitting portions 102A, and one second light-transmitting opening 1132 corresponds to one light-transmitting portion 102A. In this case, the plurality of image sensors 31 are configured to collect texture by receiving light that is emitted from the plurality of light-emitting devices EM of the light-emitting device layer and reflected by the texture of the textured touch surface S, and passes through the plurality of second light-transmitting openings 1132 of the black matrix layer 113 and the plurality of light-transmitting portions of the driving circuit layer to reach the plurality of image sensors 31. The plurality of second light-transmitting openings 1132 and the plurality of light-transmitting portions 102A allow the plurality of image sensors 31 to fully receive the light reflected by the texture, thereby improving the speed and accuracy of texture recognition.

[0180] The following points need to be explained:

[0181] (1) The drawings of the embodiments of the present disclosure relate only to the structure of the embodiments of the present disclosure, and other structures may refer to conventional designs.

[0182] (2) For clarity, in the drawings illustrating the embodiments of the present disclosure, the thickness of layers or regions has been exaggerated or reduced, i.e., the drawings are not drawn to actual scale. As can be understood, when an element such as a layer, film, region, or substrate is located "on" or "under" another element, the element may be located "directly" "on" or "under" the other element, or intermediate elements may be present.

[0183] (3) Where no contradiction exists, the embodiments and features of the embodiments of this disclosure may be combined with each other to obtain new embodiments.

[0184] The above are merely specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto, and should be in accordance with the scope of protection of the claims. [Explanation of symbols]

[0185] P1 First sub-pixel P2 Second sub-pixel P3 Third sub-pixel P4 Fourth sub-pixel SP subpixel SP1 1st subpixel row SP2 Second subpixel row SP3 Third subpixel row RG 1st area S1 First signal line S2 2nd signal line S3 Third signal line S4 4th signal line VDD First voltage terminal VDD1 1st power line VDD2 2nd power line EMT light emission control signal line EMT1 1 light emission control signal line EMT2 1 light emission control signal line VNT reset voltage line VNT1 1 reset voltage line VNT2 1 reset voltage line VNT3 1 reset voltage line Rst Reset control line Rst1 First reset signal Rst2 Second reset signal GATE scan line M1 First conductive layer M2 Second conductive layer P protective insulating layer I Insulation layer B-Base O Electrical connection points Vinit Reset voltage terminal Vinit1 First reset voltage terminal Vinit2 Second reset voltage terminal VSS Second voltage pin N1 First node N2 Second node N3 Third node N4 4th node Vd Data signal terminal Ga1 First scanning signal Ga2 Second scanning signal T1 First transistor T2 Second transistor T3 Third transistor T4 Fourth transistor T5 Fifth transistor T6 6th transistor T7 Seventh transistor DT data line S Textured Touch Surface Cst storage capacitor C1 First capacitor electrode C2 Second capacitor electrode EM light-emitting devices EM1 1st light emission control terminal EM1 Second light emission control terminal EN sealing layer VA Beer Hall 11 scan lines 12 Data lines 30 Image Sensor Array 31 Image Sensor 100a First sub-pixel 100b Second sub-pixel 100c 3rd sub-pixel 100d 4th sub-pixel 101 Base board 102 Drive circuit layer 102A first light-transmitting sub-opening, first light-transmitting portion 102B second light-transmitting sub-opening, second light-transmitting portion 102C Third light-transmitting sub-opening, third light-transmitting portion 102D 4th transparent part 103 Buffer layer 104 1st electrode layer 105 Light-emitting material layer 106 Second electrode layer 107 Spacers, photo spacers 108 Pixel Definition Layer 109 Planarization layer 110 First inorganic sealing layer 111 Second organic sealing layer 112 Third inorganic sealing layer 113 Black matrix layer 114 color film layers 115 Protective cover plate 122 Drive circuit 123 First light emission control circuit 124 Second light emission control circuit 126 Data writing circuit 127 Memory circuit 128 Compensation circuit 129 Reset Circuit 131 Control terminal 132 1st terminal 133 2nd terminal 134 1st terminal 135 2nd terminal 1020 Light transmission part 1021 Active layer 1022 Gate 1023 Source 1024 Drain 1025 Second gate insulating layer 1026 Interlayer insulation layer 1027 Passivation Layer 1041 Main body 1042 Connection 1043 Connection electrode 1081 sub-pixel aperture 1131 1st light transmission aperture 1132 Second light transmission aperture 1132A First Optically Transmitting Sub-Aperture 1132B Second light-transmitting sub-aperture 1132C Third light-transmitting sub-opening 1132D Fourth light-transmitting sub-opening 1141 Color Film Pattern 1141A 1st color film pattern 1141B 2nd color film pattern 1141C 3rd Color Film Pattern 1141D 4th color film pattern

Claims

1. A display substrate having a plurality of sub-pixels arranged in an array, the display substrate including: a base substrate; a driving circuit layer disposed on the base substrate; a light-emitting device layer disposed on one side of the driving circuit layer away from the base substrate; and a black matrix layer disposed on one side of the light-emitting device layer away from the base substrate, each of the plurality of sub-pixels includes a pixel driving circuit disposed in the driving circuit layer and a light-emitting device disposed in the light-emitting device layer, the pixel driving circuit being configured to drive the light-emitting device; the black matrix layer has a plurality of first light-transmitting openings that expose the light-emitting devices of the sub-pixels in a direction perpendicular to a surface of the base substrate, and a plurality of second light-transmitting openings that are located between the first light-transmitting openings; the driving circuit layer includes a plurality of light-transmitting portions, and each of the plurality of second light-transmitting openings is disposed corresponding to at least one of the plurality of light-transmitting portions to transmit light; the plurality of sub-pixels include first sub-pixels and second sub-pixels, and the plurality of light-transmitting portions include a first light-transmitting portion included in a pixel driving circuit of the first sub-pixels and a second light-transmitting portion included in a pixel driving circuit of the second sub-pixels; In a direction perpendicular to a surface of the base substrate, the plurality of second light-transmitting openings include first light-transmitting sub-openings at least partially overlapping with the first light-transmitting portions and second light-transmitting sub-openings at least partially overlapping with the second light-transmitting portions; The display substrate, wherein a ratio of an area of ​​the first light-transmitting sub-opening to an area of ​​the second light-transmitting sub-opening is 2 or more.

2. 2 . The display substrate of claim 1 , wherein the first light-transmitting sub-opening has a planar shape different from that of the second light-transmitting sub-opening in a direction parallel to a surface of the base substrate.

3. 2. The display substrate of claim 1, wherein a ratio of an area of ​​the first light-transmitting sub-aperture to an area of ​​the second light-transmitting sub-aperture is in the range of (3-4):

1.

4. the plurality of sub-pixels further include a third sub-pixel, the pixel driving circuit of the third sub-pixel has a third light-transmitting portion, and the plurality of second light-transmitting openings further include a third light-transmitting sub-opening at least partially overlapping with the third light-transmitting portion in a direction perpendicular to a surface of the base substrate; A display substrate described in any one of claims 1 to 3, wherein in a direction parallel to the surface of the base substrate, the planar shape of the third light-transmitting sub-opening is different from the planar shapes of the first light-transmitting sub-opening and the second light-transmitting sub-opening, and the area of ​​the third light-transmitting sub-opening is larger than the area of ​​the second light-transmitting sub-opening and is approximately equal to the area of ​​the first light-transmitting sub-opening.

5. The display substrate of claim 4, wherein the ratio of the area of ​​the first light-transmitting sub-opening to the area of ​​the second light-transmitting sub-opening to the area of ​​the third light-transmitting sub-opening is in the range of (3-4):1:(3-4).

6. the plurality of sub-pixels further include a fourth sub-pixel, the pixel driving circuit of the fourth sub-pixel has a fourth light-transmitting portion, and the plurality of second light-transmitting openings further include a fourth light-transmitting sub-opening at least partially overlapping with the fourth light-transmitting portion in a direction perpendicular to a surface of the base substrate; A display substrate as described in claim 4 or 5, wherein in a direction parallel to the surface of the base substrate, the planar shape of the fourth light-transmitting sub-opening is different from the planar shapes of the first light-transmitting sub-opening, the second light-transmitting sub-opening and the third light-transmitting sub-opening, and the area of ​​the fourth light-transmitting sub-opening is smaller than the area of ​​the third light-transmitting sub-opening and the area of ​​the first light-transmitting sub-opening, and larger than the area of ​​the second light-transmitting sub-opening.

7. 7. The display substrate of claim 6, wherein the area ratio range of the first light-transmitting sub-opening, the second light-transmitting sub-opening, the third light-transmitting sub-opening, and the fourth light-transmitting sub-opening is (3-4):1:(3-4):(2.5-3.5).

8. 8. The display substrate according to claim 1, wherein the plurality of second light-transmitting openings are arranged in an array of a plurality of rows and a plurality of columns.

9. the first subpixel is a red subpixel, the second subpixel is a green subpixel, the third subpixel is a blue subpixel, and the fourth subpixel is a green subpixel; 8. The display substrate according to claim 6, wherein one first sub-pixel, one second sub-pixel, one third sub-pixel and one fourth sub-pixel form one repeating unit, and a plurality of repeating units are arranged in an array on the base substrate.

10. a color film layer including a plurality of color film patterns respectively covering the plurality of first light-transmitting openings; In a direction perpendicular to a surface of the base substrate, the plurality of color film patterns include a first color film pattern at least partially overlapping the light-emitting device of the first sub-pixel and a second color film pattern at least partially overlapping the light-emitting device of the second sub-pixel; 10. The display substrate of claim 9, wherein the planar shape of the first color film pattern is different from the planar shape of the second color film pattern in a direction parallel to the surface of the base substrate, and the area of ​​the first color film pattern is larger than the area of ​​the second color film pattern.

11. 11. The display substrate of claim 10, wherein the ratio of the area of ​​the first color film pattern to the area of ​​the second color film pattern is in the range of (1 to 1.5):

1.

12. 12. The display substrate according to claim 10, wherein the first color film pattern is substantially rectangular, and the second color film pattern is substantially semi-elliptical.

13. the plurality of color film patterns further includes a third color film pattern at least partially overlapping the light-emitting device of the third sub-pixel; A display substrate described in any one of claims 10 to 12, wherein in a direction parallel to the surface of the base substrate, the planar shape of the third color film pattern is different from the planar shapes of the first color film pattern and the second color film pattern, and the area of ​​the third color film pattern is larger than the area of ​​the first color film pattern and the area of ​​the second color film pattern.

14. 14. The display substrate of claim 13, wherein the ratio of the area of ​​the first color film pattern to the area of ​​the second color film pattern to the area of ​​the third color film pattern is in the range of (1-1.5):1:(1-1.6).

15. In a direction perpendicular to the surface of the base substrate, the plurality of color film patterns further include a fourth color film pattern at least partially overlapping the light emitting device of the fourth sub-pixel; 15. A display substrate as described in claim 13 or 14, wherein in a direction parallel to the surface of the base substrate, the planar shape of the fourth color film pattern is approximately the same as the planar shape of the second color film pattern, and the area of ​​the fourth color film pattern is approximately equal to the area of ​​the second color film pattern.

16. 16. The display substrate of claim 15, wherein the fourth color film pattern partially overlaps the fourth light-transmitting sub-opening in a direction perpendicular to the surface of the base substrate.

17. 15. The display substrate of claim 10, wherein the minimum distance between the edges of the plurality of color film patterns and the edges of the plurality of second light-transmitting openings is 1 μm to 5 μm.

18. a planarization layer disposed on one side of the driving circuit layer away from the base substrate; and a pixel definition layer located on one side of the planarization layer away from the base substrate, the pixel definition layer including a plurality of subpixel openings, the light-emitting device includes a first electrode layer, a light-emitting material layer, and a second electrode layer, which are stacked in order in a direction away from the base substrate, the first electrode layer being disposed on one side of the planarization layer away from the base substrate, the pixel definition layer being disposed on one side of the first electrode layer away from the base substrate, and the plurality of sub-pixel openings respectively exposing the first electrode layers of the light-emitting devices of the plurality of sub-pixels; 18. The display substrate according to claim 10, wherein for one first light-transmitting opening and one sub-pixel opening corresponding to the same sub-pixel, the planar shape of the first light-transmitting opening is substantially the same as the planar shape of the sub-pixel opening.

19. 20. The display substrate of claim 18, wherein for one color film pattern and one subpixel opening corresponding to the same subpixel, the planar shape of the color film pattern is different from the planar shape of the subpixel opening.

20. A display device comprising the display substrate according to any one of claims 1 to 19.

Images