A display substrate and a display device

Abstract

This application discloses a display substrate and a display device. The display substrate includes: a substrate including multiple sub-pixel regions, each sub-pixel region including a reflective region and a transmissive region; multiple pixel driving units located on one side of the substrate, the orthographic projections of the multiple pixel driving units on the substrate corresponding one-to-one within the multiple sub-pixel regions; each pixel driving unit includes: a driving circuit layer including a transistor driving circuit; an organic layer located on the side of the driving circuit layer opposite to the substrate, having a first connection hole, the orthographic projection of the first connection hole on the substrate at least partially overlapping with the transmissive region; and a reflective electrode located on the side of the organic layer opposite to the driving circuit layer, the orthographic projection of the reflective electrode on the substrate at least covering the reflective region, the reflective electrode having a first light-transmitting hole disposed opposite to the first connection hole, the orthographic projection of the first light-transmitting hole on the substrate coinciding with the light-transmitting region. This display substrate can significantly improve the reflectivity of the display panel.

Description

Technical Field

[0001] This application relates to the field of display equipment technology, and in particular to a display substrate and a display device. Background Technology

[0002] Outdoor environments are typically bright during the day, and traditional outdoor display devices need to have very high brightness in order to display images better, which leads to high power consumption. If a reflective display device is used outdoors, the power consumption of the product can be greatly reduced when the ambient light is high, but it cannot achieve clear display function when the ambient light is low or at night. Summary of the Invention

[0003] This application provides a display substrate and a display device. The display substrate can increase the area of ​​the reflective electrode that can reflect external light, thereby greatly improving the reflectivity of the display panel in a high-brightness environment.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A display substrate, comprising:

[0006] The substrate includes multiple sub-pixel regions, each of which includes a reflective region and a transmissive region;

[0007] Multiple pixel driving units are located on one side of the substrate, and the orthographic projections of the multiple pixel driving units on the substrate are located in the multiple sub-pixel regions respectively.

[0008] Each of the pixel driving units includes:

[0009] A driving circuit layer is located on the substrate, and the driving circuit layer includes a transistor driving circuit.

[0010] An organic layer is located on the side of the driving circuit layer opposite to the substrate. The organic layer has a first connection hole, and the orthographic projection of the first connection hole on the substrate at least partially overlaps with the transmission area.

[0011] A reflective electrode is located on the side of the organic layer opposite to the driving circuit layer. The orthogonal projection of the reflective electrode on the substrate at least covers the reflective area. The reflective electrode has a first light-transmitting hole disposed opposite to the first connection hole. The orthogonal projection of the first light-transmitting hole on the substrate coincides with the light-transmitting area.

[0012] Optionally, the pixel driving unit further includes an inorganic layer and connecting wires;

[0013] The inorganic layer is located between the organic layer and the driving circuit layer. The inorganic layer has a second connection hole, and the orthographic projection of the second connection hole on the substrate at least partially overlaps with the orthographic projection of the first connection hole on the substrate.

[0014] The connecting wire is located between the inorganic layer and the substrate. The first end of the connecting wire is electrically connected to the transistor driving circuit, and the second end of the connecting wire is exposed through the second connecting hole to achieve electrical connection with the reflective electrode.

[0015] Optionally, the second end of the connecting wire is exposed at the first connecting hole, and the reflective electrode is connected to the second end of the connecting wire inside the first connecting hole.

[0016] Optionally, the pixel driving unit further includes a transparent electrode located between the driving circuit layer and the reflective electrode, wherein the orthographic projection of the transparent electrode on the substrate at least covers the orthographic projection of the first connection hole on the substrate;

[0017] The reflective electrode is connected to the second end of the connecting wire via the transparent electrode.

[0018] Optionally, the transparent electrode is located between the organic layer and the reflective electrode.

[0019] Optionally, the orthographic projection of the connecting wire on the substrate overlaps with the edge of the orthographic projection of the first connecting hole on the substrate.

[0020] Optionally, along the radial direction of the first connecting hole, the orthographic projection of the first connecting hole on the substrate overlaps with the orthographic projection of the connecting wire on the substrate only on one side.

[0021] Optionally, along the radial direction of the first connecting hole, the width of the area where the orthographic projection of the first connecting hole on the substrate overlaps with the orthographic projection of the connecting wire on the substrate is greater than 0 micrometers and less than or equal to 3 micrometers.

[0022] Optionally, when the pixel driving unit includes the transparent electrode, the area of ​​the transparent electrode opposite to the first connection hole is recessed into the first connection hole to form a recess;

[0023] The orthographic projection of the first light-transmitting hole on the substrate coincides with the orthographic projection of the recess on the substrate.

[0024] Optionally, the pixel driving unit further includes an inorganic layer and a transparent electrode;

[0025] The inorganic layer is located between the organic layer and the driving circuit layer. The inorganic layer has a third connection hole, and the orthographic projection of the third connection hole on the substrate does not overlap with the orthographic projection of the first connection hole on the substrate.

[0026] The transparent electrode is located between the inorganic layer and the organic layer. The transparent electrode is electrically connected to the transistor driving circuit through the third connection hole, and the transparent electrode is electrically connected to the reflective electrode through the first connection hole.

[0027] Optionally, the driving circuit layer has a second light-transmitting hole, the inorganic layer has a third light-transmitting hole, the orthographic projection of the second light-transmitting hole on the substrate covers the orthographic projection of the third light-transmitting hole on the substrate, and the orthographic projection of the third light-transmitting hole on the substrate covers the orthographic projection of the first light-transmitting hole on the substrate.

[0028] The area of ​​the transparent electrode opposite to the third light-transmitting hole is embedded in the second light-transmitting hole and the third light-transmitting hole, and the reflective electrode is electrically connected to the transparent electrode through the first connecting hole.

[0029] Optionally, the driving circuit layer includes a gate metal layer, a gate insulating layer, a semiconductor layer, and a source / drain metal layer sequentially disposed on the substrate. The transistor driving circuit includes a switching transistor and a capacitor electrode. The switching transistor includes a gate located in the gate metal layer, an active layer located in the semiconductor layer, and a first electrode and a second electrode located in the source / drain metal layer. The first electrode and the second electrode are electrically connected to the active layer. The first electrode is electrically connected to the reflective electrode. The capacitor electrode is located between the source / drain metal layer and the substrate and is disposed opposite to the first electrode.

[0030] Optionally, the driving circuit layer further includes a pad layer on the same layer as the gate, the pad layer having a fourth light-transmitting hole, the orthogonal projection of the fourth light-transmitting hole on the substrate covering the orthogonal projection of the first connection hole on the substrate.

[0031] Optionally, the organic layer has a scattering portion on the side facing the reflective electrode, and the orthographic projection of the scattering portion on the substrate covers the reflective area.

[0032] Optionally, the orthogonal projection of the reflective electrode on the substrate covers the orthogonal projection of the transistor driving circuit on the substrate.

[0033] This application also provides a display device, including any of the display substrates provided in the above-described technical solutions.

[0034] This application provides a display substrate and a display device. The display substrate can be applied to a liquid crystal display panel. It includes a substrate and a plurality of pixel driving units located on the substrate. The substrate includes a plurality of sub-pixel regions. Each sub-pixel region is divided into a reflective region and a transmissive region. The plurality of pixel driving units are disposed in the plurality of sub-pixel regions one by one. Each pixel driving unit includes a driving circuit layer, an organic layer and a reflective electrode sequentially disposed on the substrate. The organic layer has a first connection hole. The orthographic projection of the first connection hole on the substrate at least partially overlaps with the transmissive region. The orthographic projection of the reflective electrode on the substrate at least covers the reflective region. The reflective electrode has a first light-transmitting hole disposed opposite to the first connection hole. The orthographic projection of the first light-transmitting hole on the substrate coincides with the transmissive region. Compared with related technologies, the deep hole located in the reflective region on the organic layer can be eliminated. Only the first connection hole opposite to the transmissive region is provided on the organic layer. This can increase the area of ​​the reflective electrode in the reflective region that can reflect external light, thereby greatly improving the reflectivity of the display panel in a high-brightness environment. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0036] Figure 2 This is a schematic diagram of the structure of a pixel driving unit provided in an embodiment of this application;

[0037] Figure 3 This is a schematic diagram of the structure of a substrate provided in an embodiment of this application;

[0038] Figure 4 This is a schematic diagram of the structure of a pixel driving unit provided in an embodiment of this application;

[0039] Figure 5 This is a schematic diagram of another pixel driving unit provided in the embodiments of this application;

[0040] Figure 6 This is a schematic diagram of another pixel driving unit provided in the embodiments of this application;

[0041] Figure 7 This is a schematic diagram of another pixel driving unit provided in the embodiments of this application;

[0042] Figure 8 This is a schematic diagram of another pixel driving unit provided in the embodiments of this application;

[0043] Figure 9 This is a schematic diagram of another pixel driving unit provided in the embodiments of this application.

[0044] icon:

[0045] 1-Substrate; 2-Driving circuit layer; 21-Gate metal layer; 22-Gate insulating layer; 23-Semiconductor layer; 24-Source / drain metal layer; 210-Switching transistor; 211-Gate; 212-Active layer; 213-First electrode; 214-Second electrode; 220-Capacitor electrode; 230-Connecting wire; 240-Pad layer; 241-Fourth light-transmitting hole; 250-Light-transmitting through hole; 260-Second light-transmitting hole; 3-Organic layer; 31-First connecting hole; 4-Reflective electrode; 41-First light-transmitting hole; 5-Transparent electrode; 51-Recess; 6-Inorganic layer; 61-Second connecting hole; 62-Third connecting hole; 63-Third light-transmitting hole. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] To address the high power consumption issue of outdoor display devices, related technologies provide a liquid crystal display device, such as... Figure 1 As shown, the liquid crystal display device includes a backlight module 100 and a liquid crystal display panel 200 disposed on the light-emitting side of the backlight module 100. The liquid crystal display panel 200 may include an array substrate 201 and a color filter substrate 202 disposed opposite to each other, and a liquid crystal layer 203 located between the array substrate and the color filter substrate. The array substrate 201 may include a substrate and a plurality of pixel driving units disposed on the substrate. The substrate includes a display area and a non-display area disposed around the display area. The display area may include a plurality of sub-pixel areas. The orthographic projections of the plurality of pixel driving units on the substrate are located one-to-one within the plurality of sub-pixel areas. Each sub-pixel area may include a reflective area C1 and a transmissive area C2. The orthographic projections of the plurality of pixel driving units on the substrate are located one-to-one within the plurality of sub-pixel areas. Specifically, as shown... Figure 2 As shown, each pixel driving unit may include a driving circuit layer 02, an inorganic layer 03, an organic layer 04, a transparent electrode 05, and a reflective electrode 06 sequentially disposed on a substrate 01. The driving circuit layer 02 has a switching transistor T0. The organic layer 04 and the inorganic layer 03 have a first via D1 in the reflective region C1. The transparent electrode 06 is connected to the source of the switching transistor T0 through the first via D1. The organic layer 04 also has a second via D2. The area of ​​the reflective electrode 06 opposite to the second via D2 has a light-transmitting hole D3. The orthographic projection of the light-transmitting hole D3 on the substrate coincides with the transmission region C2.

[0048] The aforementioned liquid crystal display device is a transflective display device that can be used outdoors. When the outdoor environment is bright, the liquid crystal display panel can be used as a reflective display panel, without the need for a backlight module to provide a light source, thus saving energy. When the outdoor environment is low-brightness, the liquid crystal display device can use a backlight module to provide a light source for the liquid crystal display panel to achieve image display. Specifically, when the external environment is bright, the bright ambient light can enter the liquid crystal display panel from the side where the color filter substrate is located, and then be reflected by the reflective electrodes on the array substrate. The driving of each pixel driving unit can adjust the rotation direction of the liquid crystal in the liquid crystal layer in different sub-pixel areas. Through the liquid crystal layer, the emission state of the reflected light can be adjusted, thereby realizing the display of the image. When the external environment is low-brightness, the ambient light is too weak to be reflected to illuminate the screen. The backlight module can provide a light source. The light emitted by the backlight module enters the liquid crystal display panel through the light transmission hole. The driving of each pixel driving unit can adjust the rotation direction of the liquid crystal in the liquid crystal layer in different sub-pixel areas. Through the liquid crystal layer, the emission state of the incident light can be adjusted, thereby realizing the display of the image.

[0049] Figure 2 In the array substrate shown, the switching transistor T0 in the driving circuit layer 02 can be controlled to provide driving voltage to the transparent electrode 05 and the reflective electrode 06 to adjust the rotation direction of the liquid crystal in the liquid crystal layer. The reflective electrode 05 and the transparent electrode 06 are electrically connected to the source of the switching transistor T0 through the first via D1 of the reflective region C1. The organic layer 04 forming the first via D1 is generally thick, about 2 micrometers, which results in a deep first via D1. In the area where the first via D1 is located, light cannot form diffuse reflection. In order to achieve the connection between the electrode and the drain of the switching transistor, the diameter of the first via D1 also needs to be large, about 6 micrometers. Therefore, the area of ​​non-reflective diffuse reflection in the reflective region C1 is large, which greatly affects the reflectivity of the liquid crystal display panel.

[0050] To address the aforementioned technical problems, embodiments of this application provide a display substrate, comprising:

[0051] Substrate 1, such as Figure 3 As shown, it includes multiple sub-pixel regions C, each sub-pixel region C including a reflective region C1 and a transmissive region C2;

[0052] Multiple pixel driving units are located on one side of the substrate 1, and the orthographic projections of the multiple pixel driving units on the substrate 1 are located in multiple sub-pixel regions C respectively.

[0053] Among them, such as Figure 4 As shown, each pixel driving unit includes:

[0054] The driving circuit layer 2 is located on the substrate 1, and the driving circuit layer 2 includes a transistor driving circuit.

[0055] Organic layer 3 is located on the side of driving circuit layer 2 away from substrate 1. Organic layer 3 has a first connection hole 31. The orthographic projection of the first connection hole 31 on substrate 1 at least partially overlaps with the transmission region C2.

[0056] The reflective electrode 4 is located on the side of the organic layer 3 away from the driving circuit layer 2. The orthogonal projection of the reflective electrode 4 on the substrate 1 at least covers the reflective area C1. The reflective electrode 4 has a first light-transmitting hole 41 disposed opposite to the first connection hole 31. The orthogonal projection of the first light-transmitting hole 41 on the substrate 1 coincides with the transmission area C2.

[0057] The display substrate provided in this application embodiment can be applied to a liquid crystal display panel. It includes a substrate 1 and a plurality of pixel driving units located on the substrate 1. The substrate 1 includes a plurality of sub-pixel regions C. Each sub-pixel region C is divided into a reflective region C1 and a transmissive region C2. The plurality of pixel driving units are disposed in the plurality of sub-pixel regions C in a corresponding manner. Each pixel driving unit includes a driving circuit layer 2, an organic layer 3 and a reflective electrode 4 disposed sequentially on the substrate 1. The organic layer 3 has a first connection hole 31. The orthographic projection of the first connection hole 31 on the substrate 1 at least partially overlaps with the transmissive region C2. The orthographic projection of the reflective electrode 4 on the substrate 1 at least covers the reflective region C1. The reflective electrode 4 has a first light-transmitting hole disposed opposite to the first connection hole 31. Compared with related technologies, the deep hole located in the reflective region on the organic layer can be eliminated. Only the first connection hole opposite to the transmissive region is provided on the organic layer. This can increase the area of ​​the reflective electrode in the reflective region that can reflect external light, thereby greatly improving the reflectivity of the display panel in a high-brightness environment.

[0058] In order to improve the reflectivity of the display panel, such as Figure 4 As shown, the reflective area C1 can be any area in the sub-pixel area C other than the area corresponding to the first connecting hole 31, while the size of the transmissive area C2 is limited by the opening area of ​​the first light-transmitting hole 41. The opening shape of the first light-transmitting hole 41 can be circular, square, etc., without limitation here, depending on the situation. Specifically, the areas of the reflective area C1 and the transmissive area C2 in each sub-pixel area C can generally be determined according to the product application and user scenario. For example, if the above display substrate is used in a semi-transparent and semi-reflective display device for law enforcement recorders and charging piles, the transmissive area C2 can be set to be smaller and located close to the edge of the sub-pixel area C. This can ensure the transmission aperture ratio of the display substrate while improving the reflection efficiency.

[0059] Specifically, such as Figure 4As shown, the driving circuit layer 2 in the pixel driving unit may include a gate metal layer 21, a gate insulating layer 22, a semiconductor layer 23, and a source-drain metal layer 24 sequentially disposed on the substrate 1. The transistor driving circuit may include a switching transistor 210 and a capacitor electrode 220. The switching transistor 210 may include a gate 211 located on the gate metal layer 21, an active layer 212 located on the semiconductor layer 23, and a first electrode 213 and a second electrode 214 located on the source-drain metal layer 24. The first electrode 213 and the second electrode 214 are electrically connected to the active layer 212, and the first electrode 213 is electrically connected to the reflective electrode 4. The capacitor electrode 220 is located between the source-drain metal layer 24 and the substrate 1 and is disposed opposite to the first electrode 213. For example, the first electrode 213 and the second electrode 214 may be the source and the drain, respectively, and the capacitor electrode 220 may be located on the gate metal layer 21. The transistor driving circuit described above can control the voltage applied to the reflective electrode 4 by adjusting the state of the switching transistor 210, which can conveniently control the rotation direction of the liquid crystal in the liquid crystal layer of the liquid crystal display panel.

[0060] Specifically, the orthogonal projection of the reflective electrode 4 onto the substrate 1 can cover the orthogonal projection of the transistor driving circuit onto the substrate 1. This allows the transistor driving circuit to be positioned below the reflective electrode 4, preventing it from affecting the transmittance of the transmission area C2 of the display substrate to the light emitted from the backlight module and improving the transmittance of the transmission area C2. The reflective electrode 4 can be made of metals such as Al, MoAl, or Ag.

[0061] Specifically, the organic layer 3 can be made of organic insulating materials such as resin; a scattering part can be provided on the side of the organic layer 3 facing the reflective electrode 4, and the orthogonal projection of the scattering part on the substrate 1 covers the reflective area C1. The scattering part can be a diffuse reflection uneven morphology formed on the side of the organic layer 3 facing the reflective electrode 4, so that the reflective electrode 4 above the organic layer 3 also has a diffuse reflection uneven morphology in the reflective area C1, which can ensure that when ambient light shines on the reflective electrode 4, diffuse reflection is formed.

[0062] In the embodiments of this application, such as Figures 4 to 7 As shown, the pixel driving unit may further include an inorganic layer 6 and a connecting wire 230; wherein, the inorganic layer 6 is located between the organic layer 3 and the driving circuit layer 2, the inorganic layer 6 has a second connecting hole 61, the orthographic projection of the second connecting hole 61 on the substrate at least partially overlaps with the orthographic projection of the first connecting hole 31 on the substrate 1; the connecting wire 230 is located between the inorganic layer 6 and the substrate 1, the first end of the connecting wire 230 is electrically connected to the transistor driving circuit, and the second end of the connecting wire 230 is exposed through the second connecting hole 61 to achieve electrical connection with the reflective electrode 4.

[0063] In the above embodiments, the transistor driving circuit and the reflective electrode 4 are electrically connected through the connecting wire 230 between the inorganic layer 6 and the substrate 1. This eliminates the need for a deep hole in the reflective region C1 of the organic layer 3, increasing the area of ​​the reflective electrode 4 that reflects external light and significantly improving the reflectivity of the display panel in high-brightness environments. Specifically, the orthographic projection of the connecting wire 230 on the substrate 1 and the orthographic projection of the first light-transmitting hole 41 on the substrate 1 can be non-overlapping or only partially overlapping, avoiding affecting the light transmission effect at the first light-transmitting hole 41 and ensuring the transmittance of the display substrate to the light emitted from the backlight module.

[0064] Among them, the material of inorganic layer 6 is inorganic insulating material.

[0065] Specifically, the first end of the connecting wire 230 can be electrically connected to the first electrode 213 of the switching transistor 210 in the transistor driving circuit, thereby realizing the electrical connection between the transistor driving circuit and the transparent electrode 5.

[0066] The aforementioned connecting wire 230 can be fabricated in the same layer as any metal layer in the driving circuit layer. For example, the connecting wire 230 can be located in the source / drain metal layer 24, fabricated in the same layer as the first electrode 213 and the second electrode 214, which can simplify the fabrication process. Figures 4 to 7 As shown; alternatively, the connecting wire 230 can be fabricated on a different layer from the first electrode 213 and the second electrode 214; or, the connecting wire 230 can be fabricated on a single layer, in which case the material of the connecting wire 230 can be a transparent metal material, which can avoid affecting the transmittance of the display substrate. The specific structure and material of the connecting wire 230 are not limited here, and will be determined according to the actual situation.

[0067] Specifically, such as Figure 4 As shown, the second end of the connecting wire 230 is exposed at the first connecting hole 31. The reflective electrode 4 can be directly electrically connected to the second end of the connecting wire 230 in the first connecting hole 31. The reflective electrode 4 and the transistor driving circuit are directly conductive through the connecting wire 230.

[0068] Optionally, such as Figures 5 to 7As shown, the pixel driving unit may further include a transparent electrode 5 located between the driving circuit layer 2 and the reflective electrode 4. The orthographic projection of the transparent electrode 5 on the substrate 1 at least covers the orthographic projection of the first connection hole 31 on the substrate 1. The reflective electrode 4 is connected to the second end of the connecting wire 230 through the transparent electrode 5, enabling the transparent electrode 5 and the connecting wire 230 to conduct electricity together, thus realizing the electrical connection between the reflective electrode 4 and the transistor driving circuit. Furthermore, the transparent electrode 5 has minimal impact on the light transmission effect at the first light-transmitting hole 41, ensuring the light transmittance of the display panel. The material of the transparent electrode 5 may be indium tin oxide, etc., which can be determined according to the actual situation and is not limited here.

[0069] Specifically, the transparent electrode 5 can be located between the organic layer 3 and the reflective electrode 4, such as... Figure 5 and Figure 6 As shown, the orthogonal projection of the transparent electrode 5 on the substrate 1 can cover the orthogonal projection of the reflective electrode 4 on the substrate 1, which facilitates the electrical connection between the reflective electrode 4 and the transparent electrode 5, as well as the fabrication of the reflective electrode 4; alternatively, the transparent electrode 5 can be located between the inorganic layer 6 and the organic layer 3, such as... Figure 7 and Figure 8 As shown, there are no restrictions here; it can be determined according to the actual situation.

[0070] In the above embodiments, when the reflective electrode 4 is directly electrically connected to the transistor driving circuit via the connecting wire 230, such as Figure 4 As shown, or when the transparent electrode 5 is located between the organic layer 3 and the reflective electrode 4, such as Figure 5 The orthographic projection of the connecting wire 230 on the substrate 1 overlaps with the edge of the orthographic projection of the first connecting hole 31 on the substrate 1. The connecting wire 230 is electrically connected to the reflective electrode 4 or the transparent electrode 5 through the first connecting hole 31. There is no need to form a deep hole in the part of the organic layer 3 located in the reflective region C1. The electrical connection between the transistor driving circuit and the transparent electrode 5 can be achieved by extending the connecting wire 230 to the edge of the first connecting hole 31.

[0071] Specifically, such as Figure 4 , Figure 5 and Figure 6 As shown, along the radial direction of the first connecting hole 31, the orthographic projection of the first connecting hole 31 on the substrate 1 overlaps with the orthographic projection of the connecting wire 230 on the substrate 1 on only one side. In this structure, only the end of the connecting wire 230 is exposed from one side edge of the first connecting hole 31. The reflective electrode 4 or the transparent electrode 5 overlaps with the connecting wire 230 at the edge of the first connecting hole 31 to achieve electrical connection and reduce the influence of the connecting wire 230 on the transmittance of the display substrate.

[0072] Specifically, along the radial direction of the first connecting hole 31, the width of the area where the orthographic projection of the first connecting hole 31 on the substrate 1 overlaps with the orthographic projection of the connecting wire 230 on the substrate 1 can be greater than 0 micrometers and less than or equal to 3 micrometers. This ensures that the connecting wire 230 overlaps well in the first connecting hole 31 and also ensures the transmittance of the display substrate.

[0073] Optionally, in order to ensure a more reliable connection between the connecting wire 230 and the reflective electrode 4 or the transparent electrode 5, the second end of the connecting wire 230 may have a connecting through hole. The connection is made so that the orthographic projection on the substrate 1 is located within the orthographic projection of the first connecting hole 31 on the substrate 1, which enables the reflective electrode 4 or the transparent electrode 5 to be connected to the connecting wire 230 at the periphery of the first connecting hole 31.

[0074] In the above embodiments, such as Figure 6 As shown, when the transparent electrode 5 is located between the organic layer 3 and the reflective electrode 4, the area of ​​the transparent electrode 5 opposite to the first connection hole 31 is embedded in the first connection hole 31 to form a recess 51; the orthographic projection of the first light-transmitting hole 41 on the substrate 1 and the orthographic projection of the recess 51 on the substrate 1 can coincide, so that the reflective electrode 4 only overlaps at the edge of the recess 51, and the electrical connection between the reflective electrode 4 and the transparent electrode 5 can be realized. This structure can not only ensure the reflectivity of the display panel in the reflective area C1, but also increase the area of ​​the light-transmitting area C2, greatly improving the transmittance of the display substrate in the light-transmitting area C2.

[0075] In this embodiment, the driving circuit layer 2 may further have a light-transmitting via 250. The orthogonal projection of the light-transmitting via 250 on the substrate 1 covers the orthogonal projection of the second connecting hole 61 on the substrate 1, and the orthogonal projection of the second connecting hole 61 on the substrate covers the orthogonal projection of the first connecting hole 61 on the substrate. In this case, the second end of the connecting wire can be exposed from the sidewall of the second connecting hole. Figure 8 As shown, the transmittance of the display substrate can be improved by removing the inorganic layer 6 and the gate insulating layer 22 in the area opposite to the first light-transmitting hole 41.

[0076] Specifically, the center lines of the first connecting hole 31 and the first light-transmitting hole 41 can coincide, which can ensure the transmittance of the display substrate in the transmission area C2.

[0077] In this embodiment, the reflective electrode 4 and the transistor driving circuit can also be electrically connected only through the transparent electrode 5, such as... Figure 9As shown, the inorganic layer 6 may have a third connection hole 62. The orthographic projection of the third connection hole 62 on the substrate 1 does not overlap with the orthographic projection of the first connection hole 61 on the substrate 1. The transparent electrode 5 is located between the inorganic layer 6 and the organic layer 3. The transparent electrode 5 is electrically connected to the transistor driving circuit through the third connection hole 62. The transparent electrode 5 is electrically connected to the reflective electrode 4 through the first connection hole 31. The transparent electrode 5 on the substrate 1 may cover the orthographic projection of the first connection hole 61 on the substrate. Figure 9 The transparent electrode 5 can be electrically connected to the transistor driving circuit located on the side of the inorganic layer 6 opposite to the organic layer 3 without passing through the organic layer 3. Therefore, a third connection hole 62 can be directly set on the inorganic layer 6 to realize the connection between the transparent electrode 5 and the transistor driving circuit. The structure is simple and easy to manufacture.

[0078] Furthermore, when the transparent electrode 5 is connected to the transistor driving circuit through the third connection hole 62, it can be configured as follows: Figure 9 As shown, the driving circuit layer 2 has a second light-transmitting hole 260, and the inorganic layer 6 has a third light-transmitting hole 63. The orthographic projection of the second light-transmitting hole 260 on the substrate 1 covers the orthographic projection of the third light-transmitting hole 63 on the substrate 1, and the orthographic projection of the third light-transmitting hole 63 on the substrate 1 covers the orthographic projection of the first light-transmitting hole 41 on the substrate 1. The area of ​​the transparent electrode 5 opposite to the third light-transmitting hole 63 is embedded in the second light-transmitting hole 260 and the third light-transmitting hole 63. The reflective electrode 4 is electrically connected to the transparent electrode 5 through the first connection hole 31. The presence of the inorganic layer 6 and the driving circuit layer 2 in the area corresponding to the first light-transmitting hole 31 will affect the transmittance to a certain extent. By fabricating the second light-transmitting hole 260 and the third light-transmitting hole 63, the inorganic layer 6 and the gate insulating layer 22 in the corresponding areas can be removed, which can maximize the transmittance of the display substrate.

[0079] The center lines of the first light-transmitting hole 41, the second light-transmitting hole 260, the third light-transmitting hole 63, and the first connecting hole 31 can be the same center line, which can better ensure the transmittance of the display substrate in the transmission area C2.

[0080] Specifically, such as Figures 4 to 9 As shown, the aforementioned driving circuit layer 2 may further include a pad layer 240 on the same layer as the gate 211. The pad layer 240 has a fourth light-transmitting hole 241. The orthogonal projection of the fourth light-transmitting hole 241 on the substrate 1 covers the orthogonal projection of the first connection hole 31 on the substrate 1. The position of the fourth light-transmitting hole 241 on the pad layer 240 can define the area where the first connection hole 31 and the first light-transmitting hole 41 are disposed, which facilitates the fabrication of the display substrate. Here, the pad layer 240 can be electrically connected to the capacitor electrode 220 fabricated on the same layer to achieve functional reuse.

[0081] In the embodiments of this application, such as Figure 3As shown, the substrate 1 may include a display area AA and surrounding areas BB. The display area AA has multiple sub-pixel areas C, each sub-pixel area C including a reflective area C1 and a transmissive area C2. The substrate 1 is fabricated as shown in the diagram. Figure 6 The specific steps for the display substrate shown can be as follows:

[0082] Step S101: Deposit a gate metal layer on the substrate and form a pattern of the gate metal layer using a mask process. The pattern may include a gate, gate line, capacitor electrode, pad layer, and bonding terminal pattern located in the display area and the non-display area.

[0083] Step S102: Deposit a gate insulating layer and a semiconductor layer on the gate metal layer, and form an active layer pattern through the semiconductor layer using a masking process;

[0084] Step S103: Deposit source and drain metal layers on the active layer and form a pattern of source and drain metal layers using a masking process. The pattern may include source, drain, connecting wires, data lines, and bonding terminals located in the display area and the non-display area.

[0085] Step S104: Deposit an inorganic layer on the source and drain metal layers, and use a masking process to form a second connection hole in the region corresponding to the inorganic and transmission regions to expose the end of the connection wire.

[0086] Step S105: An organic layer is formed on the inorganic layer. A first connection hole is formed in the region corresponding to the transmission area of ​​the organic layer using a masking process to expose the end of the connecting wire. The organic layer in the non-display area is removed, and a diffuse reflection undulation is formed in the region corresponding to the reflection area on the side of the organic layer away from the substrate.

[0087] Step S106: Deposit a transparent electrode layer on the organic layer, and form a pattern of transparent electrodes or other transition lines using a masking process;

[0088] Step S107: A reflective layer is formed on the transparent electrode layer, and a reflective electrode pattern is formed by a masking process.

[0089] This application also provides a display device, including any of the display substrates provided in the above-described technical solutions.

[0090] Specifically, the above-mentioned display device can be a liquid crystal display device, which includes a backlight module and a liquid crystal display panel located on the light-emitting side of the backlight module. The above-mentioned display substrate can be used as an array substrate of the liquid crystal display panel.

[0091] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A display substrate, wherein, The application relates to a display panel, comprising: a substrate, comprising a plurality of sub-pixel regions, each of the sub-pixel regions comprising a reflection region and a transmission region; a plurality of pixel driving units located on one side of the substrate, the orthogonal projection of each of the pixel driving units on the substrate corresponding to one of the sub-pixel regions; each of the pixel driving units comprising: a driving circuit layer located on the substrate, the driving circuit layer comprising a transistor driving circuit; an organic layer located on the side of the driving circuit layer away from the substrate, the organic layer having a first connecting hole, the orthogonal projection of the first connecting hole on the substrate at least partially overlapping the transmission region; a reflection electrode located on the side of the organic layer away from the driving circuit layer, the orthogonal projection of the reflection electrode on the substrate covering the reflection region, the reflection electrode having a first light-transmitting hole arranged opposite to the first connecting hole, the orthogonal projection of the first light-transmitting hole on the substrate coinciding with the transmission region; the driving circuit layer comprising a gate metal layer, a gate insulating layer, a semiconductor layer and a source-drain metal layer arranged in sequence on the substrate, the transistor driving circuit comprising a switching transistor and a capacitor electrode, the switching transistor comprising a gate electrode located on the gate metal layer, an active layer located on the semiconductor layer and a first electrode and a second electrode located on the source-drain metal layer, the first electrode and the second electrode being electrically connected to the active layer, the first electrode being electrically connected to the reflection electrode, the capacitor electrode being located between the source-drain metal layer and the substrate and arranged opposite to the first electrode; the driving circuit layer further comprising a pad layer in the same layer as the gate electrode, the pad layer having a fourth light-transmitting hole, the orthogonal projection of the fourth light-transmitting hole on the substrate covering the orthogonal projection of the first connecting hole on the substrate, the pad layer being electrically connected to the capacitor electrode prepared in the same layer. 2.The display substrate of claim 1, wherein, the pixel driving unit further comprising an inorganic layer and a connecting wire; the inorganic layer being located between the organic layer and the driving circuit layer, the inorganic layer having a second connecting hole, the orthogonal projection of the second connecting hole on the substrate at least partially overlapping the orthogonal projection of the first connecting hole on the substrate; the connecting wire being located between the inorganic layer and the substrate, the first end of the connecting wire being electrically connected to the transistor driving circuit, the second end of the connecting wire being exposed by the second connecting hole for electrical connection with the reflection electrode. 3.The display substrate of claim 2, wherein, the second end of the connecting wire being exposed by the first connecting hole, the reflection electrode being connected to the second end of the connecting wire in the first connecting hole. 4.The display substrate of claim 3, wherein, the orthogonal projection of the connecting wire on the substrate overlapping the edge of the orthogonal projection of the first connecting hole on the substrate. 5.The display substrate of claim 2, wherein, the pixel driving unit further comprising a transparent electrode located between the driving circuit layer and the reflection electrode, the orthogonal projection of the transparent electrode on the substrate covering the orthogonal projection of the first connecting hole on the substrate; the reflection electrode being connected to the second end of the connecting wire through the transparent electrode. 6.The display substrate of claim 5, wherein, The transparent electrode is located between the organic layer and the reflective electrode. 7.The display substrate of claim 6, wherein, A projection of the connection wire on the substrate substrate overlaps with an edge of a projection of the first connection hole on the substrate substrate. 8.The display substrate according to claim 4 or 7, wherein Along a radial direction of the first connection hole, a projection of the first connection hole on the substrate substrate overlaps with a projection of the connection wire on the substrate substrate only on one side. 9.The display substrate according to claim 4 or 7, wherein Along a radial direction of the first connection hole, a width of an area where a projection of the first connection hole on the substrate substrate overlaps with a projection of the connection wire on the substrate substrate is greater than 0 microns and less than or equal to 3 microns. 10.The display substrate of claim 7, wherein, A region of the transparent electrode opposite to the first connection hole is recessed into the first connection hole to form a recess; A projection of the first light-transmitting hole on the substrate substrate coincides with a projection of the recess on the substrate substrate. 11.The display substrate of claim 1, wherein, The pixel driving unit further comprises an inorganic layer and a transparent electrode; The inorganic layer is located between the organic layer and the driving circuit layer, and has a third connection hole, a projection of the third connection hole on the substrate substrate has no overlap with a projection of the first connection hole on the substrate substrate; The transparent electrode is located between the inorganic layer and the organic layer, and is electrically connected to the transistor driving circuit through the third connection hole, and is electrically connected to the reflective electrode through the first connection hole. 12.The display substrate of claim 11, wherein, The driving circuit layer has a second light-transmitting hole, and the inorganic layer has a third light-transmitting hole, a projection of the second light-transmitting hole on the substrate substrate covers a projection of the third light-transmitting hole on the substrate substrate, and a projection of the third light-transmitting hole on the substrate substrate covers a projection of the first light-transmitting hole on the substrate substrate; A region of the transparent electrode opposite to the third light-transmitting hole is recessed into the second light-transmitting hole and the third light-transmitting hole, and the reflective electrode is electrically connected to the transparent electrode through the first connection hole. 13.The display substrate of claim 1, wherein, A side of the organic layer facing the reflective electrode has a scattering part, and a projection of the scattering part on the substrate substrate covers the reflective area. 14.The display substrate of claim 1, wherein, A projection of the reflective electrode on the substrate substrate covers a projection of the transistor driving circuit on the substrate substrate.

15. A display device, wherein, The display substrate comprises the display substrate as claimed in any one of claims 1-14.

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