Display substrate and display device

Abstract

The display substrate and display device provided by the present disclosure include a substrate; a plurality of light-emitting devices located on the substrate; a plurality of photosensitive devices, wherein the orthographic projection of each photosensitive device on the substrate is located within the orthographic projection of at least part of the gap between each light-emitting device on the substrate; a black matrix including a plurality of first openings and a plurality of second openings, wherein the orthographic projections of the plurality of first openings on the substrate overlap with the orthographic projections of the plurality of light-emitting devices on the substrate, and the orthographic projections of the plurality of second openings on the substrate overlap with the orthographic projections of the plurality of photosensitive devices on the substrate; and a touch layer, wherein the orthographic projection of the touch layer on the substrate does not overlap with the orthographic projections of the plurality of first openings on the substrate, and the orthographic projection of the touch layer on the substrate does not overlap with the orthographic projections of the plurality of second openings on the substrate.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display substrate and a display device. Background Art

[0002] With the rapid development of the information industry, biometric technology has been increasingly widely used. In particular, fingerprints are innate, unique, and distinguishable features of the human body. They consist of a series of valleys and ridges on the surface of the fingertip skin, often including details such as bifurcations, ridge terminations, tent-like arches, left-handed, right-handed, spiral, or double spirals. These details determine the unique characteristics of fingerprints and can therefore be used to verify user identities. Based on this, fingerprint recognition technology has been widely used in various fields, including mobile devices and smart homes, providing security for user information. Summary of the Invention

[0003] Embodiments of the present disclosure provide a display substrate and a display device, which are used to achieve both touch effect and fingerprint recognition effect.

[0004] An embodiment of the present disclosure provides a display substrate, comprising:

[0005] substrate;

[0006] A plurality of light-emitting devices are located on the substrate;

[0007] a plurality of photosensitive devices, wherein an orthographic projection of each photosensitive device on the substrate is located within at least a portion of a gap between each light-emitting device and an orthographic projection of each photosensitive device on the substrate;

[0008] a black matrix comprising a plurality of first openings and a plurality of second openings, wherein the orthographic projections of the plurality of first openings on the base substrate overlap with the orthographic projections of the plurality of light-emitting devices on the base substrate, and the orthographic projections of the plurality of second openings on the base substrate overlap with the orthographic projections of the plurality of photosensitive devices on the base substrate;

[0009] A touch layer, wherein the orthographic projection of the touch layer on the base substrate does not overlap with the orthographic projections of the plurality of first openings on the base substrate, and the orthographic projection of the touch layer on the base substrate does not overlap with the orthographic projections of the plurality of second openings on the base substrate.

[0010] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, the touch layer includes a plurality of touch lines arranged crosswise, the plurality of touch lines form a plurality of meshes, the light-emitting device includes a light-emitting material layer, and the orthographic projection of the light-emitting material layer on the base substrate is located within the orthographic projection of the mesh on the base substrate.

[0011] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, the photosensitive device includes a photoelectric conversion layer, and at least part of the orthographic projection of the photoelectric conversion layer on the base substrate is located within the orthographic projection of the mesh on the base substrate.

[0012] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, the touch routing includes a first common routing portion and a second common routing portion, the first common routing portion is simultaneously wound around the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device along a first direction, the second common routing portion is simultaneously wound around the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device along a second direction, the second direction is arranged to intersect with the first direction, and the line width of the first common routing portion is different from the line width of the second common routing portion.

[0013] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, the spacing between the light-emitting material layers in the adjacent light-emitting devices in the first direction is greater than the spacing between the light-emitting material layers in the adjacent light-emitting devices in the second direction; the line width of the first common routing portion is smaller than the line width of the second common routing portion.

[0014] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, the touch routing includes a common routing portion and a non-common routing portion, the common routing portion is simultaneously wound around the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device, and the non-common routing portion is only wound around the mesh corresponding to the light-emitting device, and the line width of the common routing portion is smaller than the line width of the non-common routing portion.

[0015] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device are independent of each other.

[0016] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, the meshes corresponding to at least some of the light-emitting devices are connected to the meshes corresponding to at least some of the photosensitive devices.

[0017] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, at least part of each of the mesh holes is arranged corresponding to at least one of the light-emitting devices and at least one of the photosensor devices.

[0018] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, each of at least a portion of the mesh holes is arranged corresponding to one of the light-emitting devices and one of the photosensor devices.

[0019] In some embodiments, in the above-mentioned display substrate provided by the embodiments of the present disclosure, each of at least a portion of the mesh holes is arranged corresponding to one of the light-emitting devices and two of the photosensitive devices.

[0020] Based on the same inventive concept, an embodiment of the present disclosure provides a display device, including the above-mentioned display substrate provided by an embodiment of the present disclosure.

[0021] The beneficial effects of the present disclosure are as follows:

[0022] The display substrate and display device provided by the embodiments of the present disclosure include a base substrate; a plurality of light-emitting devices located on the base substrate; a plurality of photosensitive devices, wherein the orthographic projection of each photosensitive device on the base substrate is located within the orthographic projection of at least part of the gap between the light-emitting devices on the base substrate; a black matrix including a plurality of first openings and a plurality of second openings, wherein the orthographic projections of the plurality of first openings on the base substrate overlap with the orthographic projections of the plurality of light-emitting devices on the base substrate, and the orthographic projections of the plurality of second openings on the base substrate overlap with the orthographic projections of the plurality of photosensitive devices on the base substrate; and a touch layer, wherein the orthographic projection of the touch layer on the base substrate does not overlap with the orthographic projections of the plurality of first openings on the base substrate, and the orthographic projection of the touch layer on the base substrate does not overlap with the orthographic projections of the plurality of second openings on the base substrate. In other words, the orthographic projection of the touch layer on the base substrate is located within the orthographic projection of the black matrix on the base substrate. In the present disclosure, the orthographic projection of the touch layer on the base substrate is arranged to not overlap with the orthographic projection of the multiple first openings on the base substrate, and the orthographic projection of the touch layer on the base substrate is arranged to not overlap with the orthographic projection of the multiple second openings on the base substrate, so that the emitted light of the light-emitting device can be irradiated to the finger through the first opening and then reflected, and the reflected light is irradiated to the photosensitive device through the second opening, thereby avoiding the presence of the touch layer interfering with fingerprint recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a display substrate provided in an embodiment of the present disclosure;

[0024] Figure 2 For the Figure 1 The cross-sectional view of the middle I-I';

[0025] Figure 3 A schematic diagram of the relative positions of the touch layer and the black matrix provided in an embodiment of the present disclosure;

[0026] Figure 4 A schematic diagram of another structure of a display substrate provided in an embodiment of the present disclosure;

[0027] Figure 5 A schematic diagram of another structure of a display substrate provided in an embodiment of the present disclosure;

[0028] Figure 6 A schematic diagram of another structure of a display substrate provided in an embodiment of the present disclosure;

[0029] Figure 7 A schematic diagram of another structure of a display substrate provided in an embodiment of the present disclosure;

[0030] Figure 8 A schematic diagram of another structure of a display substrate provided in an embodiment of the present disclosure;

[0031] Figure 9 A schematic diagram of a fingerprint recognition unit provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. It should be noted that the sizes and shapes of the figures in the drawings do not reflect the actual proportions, and the purpose is only to illustrate the contents of the present disclosure. And the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components.

[0033] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar terms used in this disclosure and the claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] In recent years, organic electroluminescent displays (OLEDs) have gradually attracted increasing attention as a new type of flat panel display. Due to their excellent characteristics, such as active light emission, high brightness, high resolution, wide viewing angle, fast response, small thickness, low energy consumption, flexibility, wide operating temperature range, and simple structure and manufacturing process, they have broad application prospects.

[0035] Placing a photosensitive device inside an OLED display can realize in-screen fingerprint recognition, which has the advantages of thin module thickness and high integration. At the same time, OLED displays are gradually becoming flexible and foldable, and the solution of directly making a color film (CF) on the encapsulation layer (TFE) (Color Film On Encapsulation, COE) can use the color film to replace the circular polarizer, making it easier to achieve the folding function. Therefore, the COE structure OLED display is the development trend of flexible folding screens. Specifically, the COE structure OLED display has a color film including a black matrix (BM) and color resist (such as red color resist R, green color resist G, blue color resist B, etc.) on the encapsulation layer. The color resist (such as red color resist R, green color resist G, blue color resist B, etc.) corresponds one-to-one with the light-emitting device (such as red light-emitting device, green light-emitting device, blue light-emitting device, etc.), and the black matrix separates different color resists (such as red color resist R, green color resist G, blue color resist B, etc.) to be used for black light shielding to prevent light leakage. By integrating the photosensitive device into the gap between the anodes contained in the light-emitting device, the in-screen fingerprint recognition function of the OLED display with a COE structure can be realized. However, when the photosensitive device is placed in the gap between the anodes contained in the light-emitting device, the black matrix will block the top of the photosensitive device. Since the black matrix is ​​black and opaque, the light from the valley ridges of the fingerprint cannot pass through the black matrix to enter the surface of the photosensitive device, so the fingerprint recognition function cannot be realized. Based on this, the black matrix in the COE structure is partially dug with holes, so that the light from the valley ridges of the fingerprint can reach the surface of the photosensitive device through the openings of the black matrix. At the same time, the black matrix openings and the photosensitive device form a collimated light path. By designing a certain black matrix opening, the stray light can be reduced from reaching the photosensitive device through the black matrix openings, thereby improving the performance of fingerprint recognition.

[0036] On the other hand, the touch control solution (FMLOC) that creates a touch pattern on the encapsulation layer reduces module thickness compared to external touch control solutions, facilitating flexible folding. Specifically, when integrating an FMLOC touch control solution into an OLED display with a COE structure, the COE structure can be fabricated after the FMLOC is formed on the encapsulation layer. However, the FMLOC metal will be exposed in the black matrix opening above the photosensitive device, causing the FMLOC metal to block light from the photosensitive device, affecting fingerprint recognition.

[0037] In order to solve the above technical problems existing in the related art, the present disclosure provides a display substrate, such as Figures 1 to 3 Shown, including:

[0038] Base substrate 101, optionally, the base substrate 101 is a flexible substrate made of polyimide (PI) or other materials;

[0039] Multiple light-emitting devices 102 are located on the substrate 101. Optionally, the light-emitting devices 102 may include a first electrode 1021, a light-emitting functional layer 1022, and a second electrode 1023 arranged in a stacked manner. The light-emitting functional layer 1022 includes, but is not limited to, a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting material layer EL, a hole blocking layer, a hole transport layer, and an electron injection layer. The light-emitting devices 102 may emit red light, green light, blue light, etc.

[0040] Multiple photosensitive devices 103, wherein the orthographic projection of each photosensitive device 103 on the substrate 101 is located within the orthographic projection of at least a portion of the gap between each light-emitting device 102 on the substrate 101, and the photosensitive device 103 may include a stacked bottom electrode 1031, a photoelectric conversion layer 1032, and a top electrode 1033, wherein the photoelectric conversion layer 1032 may be a PIN structure, specifically including a P-type semiconductor layer, an I-type semiconductor layer (also called an intrinsic semiconductor layer), and an N-type semiconductor layer; wherein the P-type semiconductor layer is located between the bottom electrode 1031 and the I-type semiconductor layer, and the N-type semiconductor layer is located between the I-type semiconductor layer and the top electrode 1033; or, alternatively, the N-type semiconductor layer is located between the bottom electrode 1031 and the I-type semiconductor layer, and the P-type semiconductor layer is located between the I-type semiconductor layer and the top electrode 1033, which is not limited here;

[0041] The black matrix 104 includes a plurality of first openings K1 and a plurality of second openings K2. The orthographic projections of the plurality of first openings K1 on the substrate 101 overlap with the orthographic projections of the plurality of light-emitting devices 102 on the substrate 101. The orthographic projections of the plurality of second openings K2 on the substrate 101 overlap with the orthographic projections of the plurality of photosensitive devices 103 on the substrate 101. In a specific implementation, red color resists R, green color resists G, blue color resists B, etc. corresponding to the light output colors of the light-emitting devices 102 may be provided at the plurality of first openings K1. To improve color purity, the orthographic projections of the light-emitting devices 102 on the substrate 101 may be located within the orthographic projections of the corresponding color resists on the substrate 101.

[0042] The touch layer 105, the orthographic projection of the touch layer 105 on the base substrate 101 and the orthographic projection of the plurality of first openings K1 on the base substrate 101 do not overlap each other, and the orthographic projection of the touch layer 105 on the base substrate 101 and the orthographic projection of the plurality of second openings K2 on the base substrate 101 do not overlap each other; in other words, the orthographic projection of the touch layer 105 on the base substrate 101 is located within the orthographic projection of the black matrix 104 on the base substrate 101.

[0043] In the display substrate provided in the embodiments of the present disclosure, the orthographic projection of the touch layer 105 on the base substrate 101 is configured to not overlap with the orthographic projections of the plurality of first openings K1 on the base substrate 101, and the orthographic projection of the touch layer 105 on the base substrate 101 is configured to not overlap with the orthographic projections of the plurality of second openings K2 on the base substrate 101. This allows light emitted by the light-emitting device 102 to illuminate the finger through the first openings K1 and then be reflected. The reflected light then illuminates the photosensitive device 103 through the second openings K2, thereby preventing the presence of the touch layer 105 from interfering with fingerprint recognition. Furthermore, because the touch layer 105 is completely shielded by the black matrix 104, ambient light is not reflected by the touch layer 105, thereby ensuring a low overall reflectivity of the display substrate. This allows for a clear image without increasing display brightness, thereby reducing power consumption.

[0044] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figure 1 As shown, the touch layer 105 includes a plurality of intersecting touch traces 105'. These touch traces 105' enclose a plurality of meshes K3. The orthographic projection of the light-emitting material layer EL of the light-emitting device 102 on the base substrate 101 is located within the orthographic projection of the meshes K3 on the base substrate 101. This prevents the touch traces 105' from blocking the light emitted by the light-emitting device 102, thereby ensuring effective light emission. In some embodiments, the area occupied by the light-emitting material layer EL of the light-emitting device 102 can be understood as the effective light-emitting area of ​​the light-emitting device 102, which can be located within the pixel opening K4 of the pixel defining layer 106. The touch layer 105 may include a touch electrode layer 51 and a bridge layer 52 located between the touch electrode layer 51 and the base substrate 101, wherein the touch electrode layer 51 includes a first touch electrode and a second touch electrode, and the first touch electrode and the second touch electrode are both grid-shaped electrodes composed of touch traces 105'. To avoid short circuit between the first touch electrode and the second touch electrode, one of the first touch electrode and the second touch electrode may be disconnected in the touch electrode layer 51, and the disconnected first touch electrode or the second touch electrode may be connected together through the bridge layer 52. Optionally, the first touch electrode is a touch drive electrode (T x ), the second touch electrode is a touch sensing electrode (R x ), or the first touch electrode is a touch sensing electrode (R x ), the second touch electrode is a touch driving electrode (T x ), no specific limitation is given here.

[0045] In some embodiments, in the display substrate provided by the embodiments of the present disclosure, at least a portion of the orthographic projection of the photoelectric conversion layer 1032 of the photosensitive device 103 on the base substrate 101 is located within the orthographic projection of the mesh K3 on the base substrate 101. Optionally, Figure 1This is illustrated by taking as an example the case where the orthographic projection of the photoelectric conversion layer 1032 on the base substrate 101 is within the orthographic projection of the mesh K3 on the base substrate 101. In some embodiments, the greater the amount of light received by the photoelectric conversion layer 1032, the larger the size of the photoelectric conversion layer 1032 is, to prevent the total amount of light from exceeding the full well capacity of the photoelectric conversion layer 1032 and thus preventing fingerprint recognition.

[0046] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figure 1 As shown, the touch trace 105' may include a first common trace portion 51' and a second common trace portion 52'. The first common trace portion 51' is arranged along a first direction Y and is wound around the mesh K3 corresponding to the light-emitting device 102 and the mesh K3 corresponding to the photosensitive device 103. The second common trace portion 52' is arranged along a second direction X and is wound around the mesh K3 corresponding to the light-emitting device 102 and the mesh K3 corresponding to the photosensitive device 103. The second direction X is arranged to intersect with the first direction Y. In order not to affect the emitted light of the light-emitting device 102 and the fingerprint reflected light incident on the photosensitive device 103 through the second opening K2, the line width of the first common trace portion 51' can be set to be different from the line width of the second common trace portion 52'.

[0047] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figure 1 As shown, the spacing between the light-emitting material layers EL in adjacent light-emitting devices 102 in the first direction Y is greater than the spacing between the light-emitting material layers EL in adjacent light-emitting devices 102 in the second direction X. To avoid the position of the light-emitting material layer EL and not block the light reflected by fingerprints, the line width of the first common wiring portion 51' can be set to be smaller than the line width of the second common wiring portion 52'. Figure 1 It can be seen that in the second direction X, there are two first common routing portions 51' between the light-emitting material layers EL of two adjacent light-emitting devices 102, and in the first direction Y, there are two second common routing portions 52' between the light-emitting material layers EL of two adjacent rows of light-emitting devices 102. The line width of the first common routing portion 51' can be reduced relative to the line width of the second common routing portion 52'. For example, the line width of the first common routing portion 51' is half the line width of the second common routing portion 52'.

[0048] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figures 4 to 8As shown, the touch trace 105' may include a shared trace portion 53' and a non-shared trace portion 54'. The shared trace portion 53' is wound around both the mesh K3 corresponding to the light-emitting device 102 and the mesh K3 corresponding to the photosensor 103, while the non-shared trace portion 54' is wound around only the mesh K3 corresponding to the light-emitting device 102. In order to avoid the position of the light-emitting material layer EL and not block the light reflected by the fingerprint, the line width of the shared trace portion 53' is smaller than the line width of the non-shared trace portion 54'.

[0049] It should be noted that this disclosure is not only applicable to Figure 1 The RGGB pixel arrangement shown, and Figures 4 to 8 The Diamond pixel arrangement shown can also be applied to the Delta pixel arrangement in related technologies, as well as any pixel arrangement that may appear in the future. As long as the touch trace 105' is located within the orthographic projection of the black matrix 104, the touch trace 105' can be guaranteed not to affect the display effect and fingerprint recognition effect.

[0050] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figure 1 and Figure 4 As shown, the mesh K3 corresponding to the light-emitting device 102 and the mesh K3 corresponding to the photosensitive device 103 are independent of each other. This arrangement can ensure that the wiring area of ​​the touch trace 105' in the gaps between the light-emitting devices 102 where the photosensitive device 103 is provided and in the gaps where the photosensitive device 103 is not provided are similar, which is conducive to ensuring the resistance uniformity of the touch trace 105'.

[0051] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figures 5 to 8 As shown, when the touch accuracy requirement is not high, a larger mesh K3 can be set so that the mesh K3 corresponding to at least some of the light-emitting devices 102 is connected to the mesh K3 corresponding to at least some of the photosensitive devices 103. This is equivalent to the orthographic projection of the same mesh K3 on the base substrate 101 overlapping with the orthographic projection of the light-emitting device 102 on the base substrate 101 and the orthographic projection of the photosensitive device 103 on the base substrate 101. That is, only the mesh K3 corresponding to some of the light-emitting devices 102 and the mesh K3 corresponding to some of the photosensitive devices 103 share the touch trace 105'. Optionally, as Figures 5 to 8 As shown, each of at least part of the meshes K3 is correspondingly provided with at least one light emitting device 102 and at least one photosensitive device 103; for example, Figure 5 and Figure 6 In the embodiment, each of at least some of the meshes K3 is correspondingly provided with a light emitting device 102 and a photosensitive device 103; Figure 8 In the embodiment, each of at least some of the meshes K3 is correspondingly provided with one light emitting device 102 and two photosensitive devices 103 .

[0052] In some embodiments, in the above-mentioned display substrate provided in the embodiments of the present disclosure, as Figure 2 and Figure 9 As shown, the device may further include a driving transistor T electrically connected to the light emitting device 102. d , a switching transistor T electrically connected to the photosensitive device 103, a first buffer layer 107, a first gate insulating layer 108, a second gate insulating layer 109, an interlayer dielectric layer 110, a first insulating layer 111, a first planar layer 112, a second insulating layer 113, a third insulating layer 114, a second planar layer 115, an encapsulation layer 116, a second buffer layer 117, a first passivation layer 118, a second passivation layer 119, a third passivation layer 120, etc. Among them, the encapsulation layer 116 may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked. The switching transistor T and the driving transistor T d It can be a top-gate transistor, a bottom-gate transistor, or a double-gate transistor, which is not limited here, and the switch transistor T and the drive transistor T d The active layer material can be low-temperature polysilicon, amorphous silicon, oxide, etc., which is not limited here. Optionally, the photosensitive device 103 is reverse biased, and the top electrode 1033 is connected to the reverse bias voltage signal (Bias) provided by the bias line 121 set in the same layer as the first electrode 1021. When the gate of the switching transistor T is turned on, the optical signal of the photosensitive device 103 enters the chip (IC) through the read line (Read line, RL) of the turned-on switching transistor T. The gate voltage of the switching transistor T can be controlled by the gate drive circuit (GOA) or the chip (IC). By arraying the photosensitive devices 103, different signal quantities are generated by utilizing the different light intensities reaching the photosensitive device 103 from the valley ridges of the finger, thereby achieving the purpose of optical fingerprint recognition.

[0053] Based on the same inventive concept, embodiments of the present disclosure provide a display device including the display substrate described above. Because the principles underlying the display device's solution are similar to those of the display substrate described above, the implementation of the display device can refer to the embodiments of the display substrate described above, and any repetitions will not be repeated.

[0054] In some embodiments, the above-mentioned display device provided by the embodiment of the present disclosure may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, a smart watch, a fitness wristband, a personal digital assistant, etc. Optionally, the above-mentioned display device provided by the embodiment of the present disclosure includes but is not limited to: a radio frequency unit, a network module, an audio output & input unit, a sensor, a display unit, a user input unit, an interface unit, and a control chip and other components; wherein the control chip is a central processing unit, a digital signal processor, a system chip (SoC), etc. In some embodiments, the control chip may also include a memory, a power module, etc., and realize power supply and signal input and output functions through additionally provided wires, signal lines, etc. In some embodiments, the control chip may also include hardware circuits and computer executable codes, etc. The hardware circuit may include conventional very large scale integration (VLSI) circuits or gate arrays and existing semiconductors or other discrete components such as logic chips and transistors; the hardware circuit may also include field programmable gate arrays, programmable array logic, programmable logic devices, etc. In addition, those skilled in the art will understand that the above structure does not constitute a limitation on the above display device provided in the embodiment of the present disclosure. In other words, the above display device provided in the embodiment of the present disclosure may include more or fewer of the above components, or a combination of certain components, or different component arrangements.

[0055] Although the present disclosure has described preferred embodiments, it should be understood that those skilled in the art may make various changes and modifications to the embodiments without departing from the spirit and scope of the embodiments of the present disclosure. Thus, if such modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. A display substrate, characterized in that: include: substrate substrate; A plurality of light emitting devices are located on the substrate; A plurality of photosensitive devices, wherein the orthographic projection of each photosensitive device on the substrate is located within at least a portion of the gap between each light-emitting device and the orthographic projection of each photosensitive device on the substrate; A black matrix, comprising a plurality of first openings and a plurality of second openings, wherein the orthographic projections of the plurality of first openings on the base substrate overlap with the orthographic projections of the plurality of light-emitting devices on the base substrate, and the orthographic projections of the plurality of second openings on the base substrate overlap with the orthographic projections of the plurality of photosensitive devices on the base substrate; A touch layer, wherein an orthographic projection of the touch layer on the base substrate does not overlap with an orthographic projection of the plurality of first openings on the base substrate, and an orthographic projection of the touch layer on the base substrate does not overlap with an orthographic projection of the plurality of second openings on the base substrate; The touch layer includes a plurality of touch traces arranged in a cross pattern, the plurality of touch traces enclose a plurality of meshes, and one of the meshes corresponds to at least one of the light-emitting devices and / or at least one of the photosensitive devices.

2. The display substrate according to claim 1, wherein: The light emitting device comprises a light emitting material layer, and an orthographic projection of the light emitting material layer on the base substrate is located within an orthographic projection of the mesh on the base substrate.

3. The display substrate according to claim 2, wherein: The photosensitive device comprises a photoelectric conversion layer, at least part of the orthographic projection of the photoelectric conversion layer on the substrate is located within the orthographic projection of the mesh on the substrate.

4. The display substrate according to claim 3, wherein: The touch routing includes a first common routing portion and a second common routing portion, the first common routing portion is simultaneously arranged along a first direction around the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device, the second common routing portion is simultaneously arranged along a second direction around the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device, the second direction is arranged to intersect with the first direction, and the line width of the first common routing portion is different from the line width of the second common routing portion.

5. The display substrate according to claim 4, wherein: The spacing between the light-emitting material layers in the adjacent light-emitting devices in the first direction is greater than the spacing between the light-emitting material layers in the adjacent light-emitting devices in the second direction; and the line width of the first common wiring portion is smaller than the line width of the second common wiring portion.

6. The display substrate according to claim 3, wherein: The touch wiring includes a common wiring portion and a non-common wiring portion. The common wiring portion is simultaneously wound around the mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device, and the non-common wiring portion is only wound around the mesh corresponding to the light-emitting device. The line width of the common wiring portion is smaller than the line width of the non-common wiring portion.

7. The display substrate according to any one of claims 3 to 6, characterized in that: The mesh corresponding to the light-emitting device and the mesh corresponding to the photosensitive device are independent of each other.

8. The display substrate according to any one of claims 3 to 6, characterized in that: The meshes corresponding to at least some of the light-emitting devices are connected to the meshes corresponding to at least some of the photosensitive devices.

9. The display substrate according to claim 8, wherein: At least part of each of the meshes is arranged corresponding to at least one of the light-emitting devices and at least one of the photosensors.

10. The display substrate according to claim 9, wherein: At least part of each of the meshes is arranged corresponding to one of the light-emitting devices and one of the photosensor devices.

11. The display substrate according to claim 9, wherein: At least part of each of the meshes is arranged corresponding to one of the light-emitting devices and two of the photosensitive devices.

12. A display device, characterized in that: It comprises the display substrate as claimed in any one of claims 1 to 11.

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