WO2020173060A1

WO2020173060A1 - Display substrate, display panel and display apparatus

Info

Publication number: WO2020173060A1
Application number: PCT/CN2019/102770
Authority: WO
Inventors: 刘如胜; 楼均辉
Original assignee: 云谷（固安）科技有限公司
Priority date: 2019-02-28
Filing date: 2019-08-27
Publication date: 2020-09-03
Also published as: CN110767710B; CN110767710A

Abstract

Disclosed are a display substrate (100), a display panel (200) and a display apparatus (300). The display substrate (100) comprises a transparent display area (10), a non-transparent display area (20), and a transitional display area (30) adjoined to the transparent display area (10) and the non-transparent display area (20). In a direction in which the non-transparent display area (20) points to the transparent display area (10), the light transmittance of the transitional display area (30) gradually increases, the minimum light transmittance of the transitional display area is greater than the light transmittance of the non-transparent display area (20), and the maximum light transmittance of the transitional display area (30) is less than the light transmittance of the transparent display area (10).

Description

Display substrate, display panel and display device

Add by reference

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910152222.8, and the invention title is "display substrate, display panel and display device" on February 28, 2019, the entire content of which is incorporated by reference. In this application.

Technical field

This application relates to the field of display technology, and in particular to a display substrate, a display panel and a display device.

Background technique

With the rapid development of electronic devices, users have higher and higher requirements for the screen-to-body ratio, and the full-screen display of electronic devices has attracted more and more attention. In traditional electronic devices such as mobile phones, tablet computers, etc., a camera, earpiece, and infrared sensor elements can be set in the slot or hole area by notch or hole on the display, but the slot or hole The hole area cannot be used to display the picture, and it cannot achieve a true full screen.

Summary of the invention

According to a first aspect of the embodiments of the present application, there is provided a display substrate, the display substrate including a transparent display area, a non-transparent display area, and a transitional display area adjacent to the transparent display area and the non-transparent display area;

Along the direction of the non-transparent display area pointing to the transparent display area, the light transmittance of the transition display area gradually increases, and the minimum light transmittance of the transition display area is greater than the light transmittance of the non-transparent display area The maximum light transmittance of the transition display area is less than the light transmittance of the transparent display area.

In one embodiment, the transition display area includes a driving circuit layer and a light-emitting function film layer on the driving circuit layer, and a direction along the non-transparent display area pointing to the transparent display area, the driving circuit layer The light transmittance gradually increases. In this way, the light transmittance of the transition display area can be gradually changed by adjusting the light transmittance of the driving circuit layer.

In one embodiment, the light-emitting function film layer includes a first electrode layer, an organic light-emitting material on the first electrode layer, and a second electrode layer on the organic light-emitting material, and the transition display area The light transmittance of the first electrode layer and/or the second electrode layer corresponding to each pixel is the same. As the non-transparent display area points to the transparent display area, the light transmittance of the driving circuit layer in the transition display area gradually increases, and the total light transmittance of the light-emitting function film layer and the driving circuit layer in the transition display area is along the The direction of the non-transparent display area pointing to the transparent display area gradually increases, thereby realizing the change of the light transmittance in the transition display area.

In one embodiment, the driving circuit layer includes a first conductive layer, a second conductive layer on the first conductive layer, and a third conductive layer on the second conductive layer, the first conductive layer The material of at least one of the layer, the second conductive layer, and the third conductive layer includes a transparent conductive material and a non-transparent conductive material. In this way, the light transmittance change of the transition display area can be adjusted by adjusting the area of the transparent material and the area of the non-transparent material in the driving circuit layer.

In an embodiment, the transition display area includes a plurality of sub-areas, and the plurality of sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and the plurality of sub-areas are arranged along the non-transparent display area to the transparent display area. In the direction of the zone, the ratio of the area of the transparent conductive material in the sub-region to the total area of the transparent conductive material and the non-transparent conductive material increases sequentially. In the transition display area, the greater the ratio of the area of the transparent conductive material in the drive circuit layer of each sub-area to the total area of the transparent conductive material and the non-transparent conductive material in the sub-area, the greater the light transmittance of the sub-area. The larger the ratio of the area of the transparent conductive material to the total area of the transparent conductive material and the non-transparent conductive material in the sub-region, the smaller the light transmittance of the sub-region. Therefore, by adjusting the ratio of the area of the transparent conductive material to the area of the non-transparent conductive material in the conductive layer of the driving circuit layer of the sub-region, the light transmittance of each sub-region in the transition display area can be adjusted, which is convenient for the transition display area. The transmittance of the area is adjusted.

In one embodiment, the driving circuit layer includes a pixel circuit, and the pixel circuit is a 2T1C circuit, or a 3T1C circuit, or a 3T2C circuit, or a 7T1C circuit or a 7T2C circuit.

In one embodiment, the pixel circuit of the driving circuit layer includes a transistor and a capacitor, the first conductive layer includes the gate of the transistor and the bottom plate of the capacitor, and the second conductive layer includes the The upper plate of the capacitor, the third conductive layer includes the source and drain of the transistor.

In one embodiment, the light transmittance of the transparent conductive material is greater than or equal to 70%.

In one embodiment, the transparent conductive material includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. In this way, the transparent conductive material has better light transmittance.

In one embodiment, the transition display area includes a driving circuit layer and a light-emitting function film layer located on the driving circuit layer, and a direction along the non-transparent display area pointing to the transparent display area, the light-emitting function film The light transmittance of the layer gradually increases. In this way, the light transmittance in the transition display area can be changed by adjusting the transmittance of the light-emitting function film in the transition display area.

In one embodiment, the material of the driving circuit layer is a transparent conductive material, or the material of the driving circuit layer includes a transparent conductive material and an opaque conductive material. When the conductive material of the driving circuit layer is a transparent conductive material, the light transmittance of the driving circuit layer can be made the same everywhere, because the light-emitting function film layer has the same light transmittance along the direction that the non-transparent display area points to the transparent display area. When the light transmittance gradually increases, the total light transmittance of the light-emitting function film layer and the driving circuit layer in the transition display area gradually increases along the direction from the non-transparent display area to the transparent display area, thereby realizing the transition display area Changes in internal light transmittance. When the conductive material of the driving circuit layer includes a transparent conductive material and an opaque conductive material, the light transmittance of the driving circuit layer may not be all the same. By adjusting the light transmittance of the driving circuit layer and the light emitting function film in the transition display area at the same time The light transmittance of the layer can realize the change of the light transmittance of the transition display area. In this case, the light transmittance of some sub-regions of the transition display area can be adjusted by the light transmittance of the driving circuit layer, and the light transmittance of other sub-regions can be adjusted by the light transmittance of the light-emitting function film layer. Improve the flexibility of light transmittance adjustment.

In one embodiment, the light-emitting functional film layer includes a first electrode layer, an organic light-emitting material on the first electrode layer, and a second electrode layer on the organic light-emitting material;

The first electrode layer includes a plurality of first electrode blocks, and the second electrode layer is a surface electrode.

In one embodiment, the first electrode block is a stacked structure of a first transparent metal oxide layer and a first metal layer. The greater the thickness of the first metal layer in the sub-region, the smaller the light transmittance of the sub-region; the smaller the thickness of the first metal layer in the sub-region, the greater the light transmittance of the sub-region, so by adjusting the sub-region The thickness of the first metal layer can adjust the light transmittance of the sub-regions, which is convenient for adjusting the light transmittance of each sub-region of the transition display area.

In an embodiment, the transition display area includes a plurality of sub-areas, and the plurality of sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and the plurality of sub-areas are arranged along the non-transparent display area to the transparent display area. In the direction of the area, the thickness of the first metal layer in the sub-area decreases sequentially. Such arrangement can make the light transmittance of the sub-region gradually increase along the direction in which the non-transparent display area points to the transparent display area.

In an embodiment, the first electrode block includes two first transparent metal oxide layers and the first metal layer located between the two first transparent metal oxide layers. Such arrangement can make the structure of the first electrode block of the transition display area and the first electrode block of the non-transparent display area the same, and the two can be formed in the same process step, thereby simplifying the preparation process of the display substrate.

In one embodiment, the light transmittance of the second electrode layer and the first transparent metal oxide layer is greater than or equal to 70%.

In one embodiment, the material of the second electrode layer includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide.

In an embodiment, the material of the first transparent metal oxide layer includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. In this way, it can be ensured that the light transmittance of the second electrode layer and the first transparent metal oxide layer is large, so that the thickness of the second electrode layer and the first transparent metal oxide layer has a small effect on the light transmittance of the transition display area. Therefore, adjusting the thickness of the first metal layer can effectively adjust the light transmittance of each sub-region of the transition display area.

In one embodiment, the material of the first metal layer includes silver. The conductivity of silver is good. When the material of the first metal layer is silver, the conductivity of the first electrode layer can be ensured. And when the thickness of silver changes, the light transmittance changes more obviously, so it can be effective by adjusting the thickness of silver. Adjust the light transmittance of the first electrode layer.

In one embodiment, the second electrode layer is a stacked structure of a second transparent metal oxide layer and a second metal layer. The greater the thickness of the second metal layer in the sub-region, the smaller the light transmittance of the sub-region; the smaller the thickness of the second metal layer in the sub-region, the greater the light transmittance of the sub-region. The thickness of the second metal layer can adjust the light transmittance of the sub-regions, which is convenient for adjusting the light transmittance of each sub-region of the transition display area.

In an embodiment, the transition display area includes a plurality of sub-areas, and the plurality of sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and the plurality of sub-areas are arranged along the non-transparent display area to the transparent display area. In the direction of the area, the thickness of the second metal layer in the sub-area decreases sequentially. Such arrangement can make the light transmittance of the sub-region gradually increase along the direction in which the non-transparent display area points to the transparent display area.

In one embodiment, the second electrode layer includes two second transparent metal oxide layers and the second metal layer located between the two second transparent metal oxide layers. Such a configuration can make the second electrode layer of the transition display area and the second electrode layer of the non-transparent display area have the same structure, and both can be formed in the same process step, thereby simplifying the preparation process of the display substrate.

In one embodiment, the light transmittance of the first electrode block and the second transparent metal oxide layer is greater than or equal to 70%.

In one embodiment, the material of the first electrode block includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide.

In one embodiment, the material of the second transparent metal oxide layer includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. In this way, it can be ensured that the light transmittance of the first electrode block and the second transparent metal oxide layer is large, so that the thickness of the first electrode block and the second transparent metal oxide layer has a small effect on the light transmittance of the transition display area. Therefore, adjusting the thickness of the second metal layer can effectively adjust the light transmittance of each sub-region of the transition display area.

In an embodiment, the material of the second metal layer includes at least one of magnesium and silver. Magnesium and silver have good conductivity. When the material of the first metal layer is at least one of magnesium and silver, the conductivity of the second electrode layer can be ensured, and the light transmittance changes when the thickness of magnesium and silver changes. Obviously, the light transmittance of the second electrode layer can be effectively adjusted by adjusting the thickness of silver.

In one embodiment, the first electrode block is made of non-transparent conductive material;

The transition display area includes a plurality of sub-areas, and the multiple sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and are arranged in a direction in which the non-transparent display area points to the transparent display area. The area of the first electrode block decreases successively.

In one embodiment, the transparent display area includes a substrate and a light-emitting function film layer located on the substrate, and the light-emitting function film layer of the transparent display area includes a third electrode layer located on the third electrode layer. And a fourth electrode layer on the organic light-emitting material; the third electrode layer includes a plurality of third electrode groups arranged along a first direction, and each of the third electrode groups includes at least one third electrode group The third electrodes in the same third electrode group all extend along the second direction, the second direction is perpendicular to the first direction, and each third electrode is provided with a piece of organic light-emitting material or more Blocks of organic light-emitting materials arranged at intervals.

In one embodiment, the driving mode of the transparent display area is passive driving, and the third electrodes of the same color of the organic light-emitting material correspondingly arranged in each of the third electrode groups are connected to the same data signal or different data signals, Or, the driving mode of the transparent display area is passive driving, and the third electrodes of the same color of the organic light-emitting material correspondingly arranged in all the third electrode groups are connected to the same data signal or different data signals. Since the third electrodes with the same color of the organic light-emitting materials correspondingly arranged in the plurality of third electrode groups are connected to the same data signal, the number of driving currents applied by the external circuit to the transparent display area can be reduced, and the number of channels for the data signal can be reduced. The requirement is small, the number of connecting wires is small, and the area occupied is small, which is more conducive to improving the transparency of the transparent display area.

In one embodiment, the driving mode of the transparent display area is active driving, and the third electrode of the same color of the organic luminescent material correspondingly arranged in each of the third electrode groups is connected to the drain of a switching transistor, so The source of the switch transistor is connected to the data signal. Since the third electrodes of the same color of the organic light-emitting materials correspondingly arranged in the plurality of third electrode groups are connected to the drain of the same switching transistor, the number of pixel circuits can be reduced, and the number of connecting wires in the transparent display area is also less , Occupies a small area, which is more conducive to improving the transparency of the transparent display area, or the driving mode of the transparent display area is active driving, and each sub-pixel in the transparent display area is driven by a corresponding pixel circuit.

In one embodiment, the pixel circuit corresponding to one sub-pixel of the transparent display area is a 1T circuit, or a 2T1C circuit, or a 3T1C circuit, or a 3T2C circuit, or a 7T1C circuit, or a 7T2C circuit. One sub-pixel is driven by one pixel circuit, which is convenient for controlling each sub-pixel.

In one embodiment, the projection of the third electrode on the substrate is composed of one graphic unit or more than two graphic units, and the graphic unit is circular, oval, dumbbell, gourd or rectangular. . When the graphic unit is circular, elliptical, dumbbell-shaped, or gourd-shaped, the width of the third electrode changes continuously or intermittently, and the distance between two adjacent third electrodes changes continuously or intermittently. The two adjacent third electrodes have different diffraction positions, and the diffraction effects at different positions cancel each other out, so that the diffraction effect can be effectively reduced, and the image captured by the camera located under the transparent display area can be ensured to have high definition.

In one embodiment, the pixel density of the transparent display area is less than the pixel density of the non-transparent display area. This arrangement can make the light transmittance of the transparent display area higher, and is also beneficial to reduce the diffraction effect of external light passing through the transparent display area.

According to a second aspect of the embodiments of the present application, there is provided a display panel including the above-mentioned display substrate and packaging layer.

In one embodiment, the transparent display area, the non-transparent display area, and the transition display area share the same substrate, and the transparent display area, the non-transparent display area, and the transition display area have organic The luminescent material is formed in the same process. In this way, the manufacturing process flow of the display panel can be simplified.

In one embodiment, the transparent display area is at least partially surrounded by the transition display area;

In one embodiment, the encapsulation layer includes a polarizer, and the polarizer covers the non-transparent display area, and does not cover the non-transparent display area and the transition display area; or, the polarizer covers the non-transparent display area. The non-transparent display area and at least part of the transition display area do not cover the transparent display area. The polarizer can dissipate the reflected light on the surface of the display panel and improve the user experience; the transparent display area is not provided with a polarizer, which can increase the light transmittance of the transparent display area and ensure the normal operation of the photosensitive device arranged under the transparent display area.

According to a third aspect of the embodiments of the present application, there is provided a display device, including:

The device body has a device area;

The above-mentioned display panel is covered on the device body;

Wherein, the device area is located below the transparent display area, and a photosensitive device that emits or collects light through the transparent display area is arranged in the device area;

In an embodiment, the photosensitive device includes a camera and/or a light sensor.

In the display substrate, display panel, and display device provided by the embodiments of the present application, a transition display area is provided between the non-transparent display area and the transparent display area, and the maximum light transmittance of the transition display area is less than the light transmittance of the transparent display area. If the minimum light transmittance is greater than the light transmittance of the non-transparent display area, the brightness of the transition display area is less than the brightness of the non-transparent display area and greater than the brightness of the transparent display area when the display substrate is displayed; In the direction of the display area, the light transmittance of the transition display area gradually increases, and the non-transparent display area points to the direction of the transparent display area. The brightness of the transition display area gradually decreases, so that the display brightness of the display substrate changes from the non-transparent display area to the transparent display area. The display area gradually transitions to avoid a clear dividing line between the non-transparent display area and the transparent display area, which can enhance the user experience.

Description of the drawings

FIG. 1 is a schematic structural diagram of a display substrate provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of the transparent display area and the transition display area shown in FIG. 1;

3 is a schematic diagram of a conductive layer of the driving circuit layer of the display substrate shown in FIG. 1;

4 is a schematic diagram of the electrode blocks of the display substrate shown in FIG. 1;

5 is another schematic diagram of the electrode block of the display substrate shown in FIG. 1;

FIG. 6 is a schematic diagram of an electrode layer of the display substrate shown in FIG. 1;

7 is a schematic diagram of the structure of the third electrode layer in the transparent display area shown in FIG. 1;

8 is a schematic diagram of a driving circuit of the third electrode layer of the transparent display area shown in FIG. 7;

9 is a schematic diagram of another driving circuit of the third electrode layer of the transparent display area shown in FIG. 7;

10 is a cross-sectional view of a display panel provided by an embodiment of the application;

FIG. 11 is a cross-sectional view of a display device provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of the structure of the device body of the display device shown in FIG. 11.

detailed description

In smart electronic devices such as mobile phones and tablet computers, due to the need to integrate photosensitive devices such as front cameras and light sensors, the photosensitive devices can be placed below the transparent display area by setting a transparent display area on the above electronic devices , A full-screen display of electronic equipment can be realized while ensuring the normal operation of the photosensitive device.

Since the light transmittance of the transparent display area is relatively large, and the pixel density and driving method of the transparent display area are different from those of the non-transparent display area, the display panel is displayed in the transparent display area and the non-transparent display area during display. The effect is quite different, resulting in a clear dividing line between the transparent display area and the non-transparent display area, which affects the user experience.

To solve the above-mentioned problems, embodiments of the present application provide a display substrate, a display panel, and a display device. The display substrate, display panel, and display device in the embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case that there is no technical conflict in the implementation of the solution, the features in the following embodiments and implementations can be mutually supplemented or combined.

The embodiment of the present application provides a display substrate. 1, the display substrate 100 includes a transparent display area 10, a non-transparent display area 20, and a transitional display area 30 adjacent to the transparent display area 10 and the non-transparent display area 20, respectively. Along the direction of the non-transparent display area 20 pointing to the transparent display area 10, the light transmittance of the transition display area 30 gradually increases, and the minimum light transmittance of the transition display area 30 is greater than the light transmittance of the non-transparent display area 20, the transition display area The maximum light transmittance of 30 is less than the light transmittance of the transparent display area 10.

In the area of the display substrate 100 with a greater light transmittance, the greater the loss of brightness in the area during display, the smaller the display brightness; the lower the light transmittance, the less the loss of brightness in the area during display, the display The greater the brightness.

In the display substrate 100 provided by the embodiment of the present application, a transition display area 30 is provided between the non-transparent display area 20 and the transparent display area 10, and the maximum light transmittance of the transition display area 30 is less than the light transmittance of the transparent display area 10. If the minimum light transmittance is greater than the light transmittance of the non-transparent display area 20, when the display substrate 100 is displaying, the brightness of the transition display area 30 is less than the brightness of the non-transparent display area 20 and greater than the brightness of the transparent display area 10; The transparent display area 20 points to the direction of the transparent display area 10. The light transmittance of the transition display area 30 gradually increases, and then the non-transparent display area 20 points to the direction of the transparent display area 10. The brightness of the transition display area 30 gradually decreases, making the display The display brightness of the substrate 100 gradually transitions from the non-transparent display area 20 to the transparent display area 10, avoiding a clear dividing line between the non-transparent display area 20 and the transparent display area 10, which can improve the user experience.

The display substrate 100 provided by the embodiment of the present application may include a driving circuit layer and a light-emitting function film layer on the driving circuit layer. The driving circuit layer may include a first conductive layer, a second conductive layer on the first conductive layer, and a third conductive layer on the second conductive layer. The light-emitting function film layer in the transition display area 30 may include a first electrode layer, an organic light-emitting material on the first electrode layer, and a second electrode layer on the organic light-emitting material. The light-emitting function film layer in the transparent display area 10 may include a third electrode layer, an organic light-emitting material on the third electrode layer, and a fourth electrode layer on the organic light-emitting material. The light-emitting function film layer located in the non-transparent display area 20 may include a fifth electrode layer, an organic light-emitting material on the fifth electrode layer, and a sixth electrode layer on the organic light-emitting material. The light transmittance of the driving circuit layer and the light-emitting function film layer of the transparent display area 10 is relatively large, for example, greater than 70%, so that the light transmittance of the transparent display area 10 is relatively large, and the display brightness of the transparent display area 10 is relatively high during display. small. The driving circuit layer and the light-emitting function film layer of the non-transparent display area 20 may both be non-transparent film layers or have a low light transmittance, so that the light transmittance of the non-transparent display area 20 is small, and the display substrate 100 is non-transparent during display. The brightness of the transparent display area 20 is relatively large.

The transition display area 30 may include a plurality of sub-areas, which are arranged along the direction in which the non-transparent display area 20 points to the transparent display area 10. The light transmittance of each sub-region may be the same. Along the direction of the non-transparent display area 20 pointing to the transparent display area 10, the light transmittance of the multiple sub-regions of the transition display area 30 gradually increases.

The greater the number of sub-areas in the transition display area 30, the smoother the transition of the display brightness from the non-transparent display area 20 to the transparent display area 10 will be. In practical applications, the number of sub-areas in the transition display area 30 can be determined according to the smoothness of the transition from the non-transparent display area to the transparent display area. However, considering the complexity of the manufacturing process, generally the number of sub-regions in the transition display area 30 can be 2, 3, or 4, etc. Referring to FIG. 2, the transitional display area 30 may include three sub-areas, respectively, a first sub-area 301, a second sub-area 302 and a third sub-area 303 arranged along the direction of the non-transparent display area 20 pointing to the transparent display area 10.

The light transmittance of the transition display area 30 gradually increases along the direction from the non-transparent display area 20 to the transparent display area 10, which can be achieved in the following several ways.

In the first way, the light transmittance of the driving circuit layer gradually increases along the direction from the non-transparent display area to the transparent display area. In this way, the light transmittance of the transition display area 30 can be changed by adjusting the light transmittance of the driving circuit layer.

In an embodiment, the light transmittance of the first electrode layer and/or the second electrode layer of the light-emitting functional film layer of the transition display area 30 is the same everywhere and the light transmittance is larger, for example, the transition display area 30 The light transmittance of the first electrode layer and/or the second electrode layer pixel area corresponding to each pixel in each pixel is the same, and the first electrode layer and/or second electrode layer pixel area corresponding to the pixel refers to the first electrode layer And/or a part of the first electrode layer and/or the second electrode layer corresponding to the realization of the pixel in the second electrode layer, so that the light transmittance of the light-emitting function film layer of the transition display area 30 is the same everywhere. The light transmittance of the driving circuit layer in the transition display area 30 gradually increases along the direction of the non-transparent display area 20 pointing to the transparent display area 10. Therefore, the total light transmittance of the light-emitting function film layer and the driving circuit layer in the transition display area 30 gradually increases along the direction from the non-transparent display area 20 to the transparent display area 10, thereby realizing the change of the light transmittance in the transition display area 30.

Wherein, the light transmittance of the materials of the first electrode layer and the second electrode layer of the light-emitting functional film layer in the transition display area 30 may be greater than or equal to 70%, for example, 75%, 80%, 85%, 90%, 95% Etc., preferably, the light transmittance of the materials of the first electrode layer and the second electrode layer in the transition display area 30 is greater than 90%. The material of the first electrode layer and the second electrode layer may include at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide to ensure the light emission of the transition display region 30 The light transmittance of the functional film layer is relatively large.

In other embodiments, the change in the light transmittance of the transition display area 30 can also be achieved by simultaneously adjusting the light transmittance of the light-emitting function film layer and the light transmittance of the driving circuit layer. In this case, the light transmittance of some sub-regions of the transition display area 30 can be adjusted by the light transmittance of the driving circuit layer, and the light transmittance of other sub-regions can be adjusted by the light transmittance of the light-emitting function film layer. Can improve the flexibility of light transmittance adjustment.

In one embodiment, in the driving circuit layer of the transition display area 30, the material of at least one of the first conductive layer, the second conductive layer, and the third conductive layer may include a transparent conductive material and a non-transparent conductive material, for example The material of one of the first conductive layer, the second conductive layer, and the third conductive layer includes a transparent conductive material and a non-transparent conductive material, and the material of the other two conductive layers is a transparent conductive material; or, the first conductive layer, The material of the two conductive layers in the second conductive layer and the third conductive layer includes a transparent conductive material and a non-transparent conductive material, and the material of the other conductive layer is a transparent conductive material; or the first conductive layer, the second conductive layer and the second conductive layer The materials of the three conductive layers respectively include transparent conductive materials and non-transparent conductive materials. In this way, the light transmittance change of the transition display area can be adjusted by adjusting the area of the transparent material and the area of the non-transparent material in the driving circuit layer.

Preferably, the transition display area 30 includes a plurality of sub-areas (for example, a first sub-area, a second sub-area, and a third sub-area), and a direction along the non-transparent display area 20 to the transparent display area 10, and the multiple sub-areas of the transition display area 30 The ratio of the area of the transparent conductive material to the total area of the transparent conductive material and the non-transparent conductive material of each sub-region in the region increases sequentially.

In the transition display area 30, the greater the ratio of the area of the transparent conductive material in the drive circuit layer of each sub-region to the total area of the transparent conductive material and the non-transparent conductive material in the sub-region, the greater the light transmittance of the sub-region. The larger the ratio of the area of the non-transparent conductive material to the total area of the transparent conductive material and the non-transparent conductive material in the sub-region, the lower the light transmittance of the sub-region. Therefore, by adjusting the ratio of the area of the transparent conductive material to the area of the non-transparent conductive material in the conductive layer of the driving circuit layer of the sub-region, the light transmittance of each sub-region in the transition display area 30 can be adjusted, which is convenient for the transition display area 30. The transmittance of each sub-area is adjusted.

Each sub-region of the transition display area 30 may include a plurality of pixels, and the area of the transparent conductive material and the area of the non-transparent conductive material in the pixel area of the driving circuit layer corresponding to each pixel in the same sub-region may be the same respectively, and the driving circuit corresponding to the pixel The layer pixel area refers to a part of the drive circuit layer corresponding to the realization of the pixel in the drive circuit layer, so that the transparent conductive material and the non-transparent conductive material in the sub-region are evenly distributed in each pixel, and then in the same sub-region The light transmittance is the same everywhere, and the brightness distribution of the same sub-region is even during display.

FIG. 3 shows a schematic diagram of a conductive layer in the transparent display area 10, the transition display area 30 and the non-transparent display area 20. The conductive layer may be any one of the first conductive layer, the second conductive layer, and the third conductive layer. The material of the pixel area of the conductive layer corresponding to each pixel in the transparent display area 10 is all transparent conductive material 51; the material of the pixel area of the conductive layer corresponding to each pixel in the non-transparent display area 20 is all the non-transparent conductive material 52; The material of the pixel area 50 of the conductive layer corresponding to each pixel in the transition display area 30 includes a transparent conductive material 51 and an opaque conductive material 52, and along the direction of the non-transparent display area 20 to the transparent display area 10, each pixel in the sub-area corresponds to The ratio of the area of the transparent conductive material in the pixel area 50 of the conductive layer to the total area of the transparent conductive material and the non-transparent conductive material increases sequentially, that is, the ratio of the transparent conductive material in the third sub-region close to the non-transparent display area 20 The ratio of the area to the total area of the transparent conductive material and the non-transparent conductive material is the smallest, and the ratio of the area of the transparent conductive material to the total area of the transparent conductive material and the non-transparent conductive material in the first sub-region close to the transparent display area 10 is the largest. The ratio of the area of the transparent conductive material to the total area of the transparent conductive material and the non-transparent conductive material in the second subregion between the first subregion and the third subregion is in the middle. The pixel area of the conductive layer corresponding to the pixel refers to a part of the conductive layer in the conductive layer corresponding to the realization of the pixel.

The driving circuit layer may include a pixel circuit for driving pixels. The pixel circuit may be, for example, a conventional 2T1C circuit, 3T1C circuit, 3T2C circuit, 7T1C circuit, or 7T2C circuit. Among them, T in the pixel circuit refers to a transistor, and C refers to a capacitor. The first conductive layer may include the gate of the transistor and the lower plate of the capacitor, and may also include gate lines and other leads; the second conductive layer may include the upper plate of the capacitor, and may also include leads; the third conductive layer includes the transistor The source and drain may also include leads.

Preferably, the light transmittance of the transparent conductive material in the driving circuit layer is greater than or equal to 70%, such as 75%, 80%, 85%, 90%, 95%, etc., preferably, the light transmittance of the transparent conductive material is greater than 90 %; Further, the transparent conductive material includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide and silver-doped indium zinc oxide. In this way, the transparent conductive material has better light transmittance.

In the second method, along the direction of the non-transparent display area pointing to the transparent display area, the light transmittance of the light-emitting function film layer located in the transition display area 30 gradually increases. In this way, the light transmittance of the transition display area 30 can be changed by adjusting the light transmittance of the light-emitting function film layer.

In one embodiment, the conductive material of the driving circuit layer may be a transparent conductive material, and the light transmittance of the driving circuit layer is the same everywhere. In this way, the total light transmittance of the light-emitting function film layer and the driving circuit layer in the transition display area 30 gradually increases along the direction from the non-transparent display area 20 to the transparent display area 10, thereby realizing the change of the light transmittance in the transition display area 30 . In other embodiments, the conductive material of the driving circuit layer may include a transparent conductive material and an opaque conductive material. The light transmittance of the driving circuit layer is not all the same. By simultaneously adjusting the light transmittance and the light transmittance of the driving circuit layer in the transition display area 30 The light transmittance of the light-emitting function film layer realizes the change of the light transmittance of the transition display area 30. In this case, the light transmittance of some sub-regions of the transition display area 30 can be adjusted by the light transmittance of the driving circuit layer, and the light transmittance of other sub-regions can be adjusted by the light transmittance of the light-emitting function film layer. Can improve the flexibility of adjustment.

In the second way, the light transmittance of the transition display area 30 can be changed by the first electrode layer or the second electrode layer, which will be described below. The first electrode layer located in the transition display area 30 may include multiple first electrode blocks, the third electrode layer located in the transparent display area 10 may include multiple third electrode blocks, and the fifth electrode located in the non-transparent display area 20 The layer may include a plurality of fifth electrode blocks. The second electrode layer in the transition display area 30, the fourth electrode layer in the transparent display area 10, and the sixth electrode layer in the non-transparent display area 20 may be surface electrodes; the first electrode layer, the third electrode layer, and the fifth electrode layer The electrode layer may be an anode layer, and the second electrode layer, the fourth electrode layer, and the sixth electrode layer may be cathode layers.

In the first solution of the second method, the first electrode block located in the transition display area 30 has a laminated structure of the first transparent metal oxide layer and the first metal layer. Wherein, the first electrode block is a laminated structure of the first transparent metal oxide layer and the first metal layer means that the first electrode block includes two or more film layers, and a part of the film layers is the first transparent The metal oxide layer, and the other part of the film layer is the first metal layer.

Among the plurality of first electrode blocks included in the first electrode layer of the transition display area 30, each one or more of the first electrode blocks may correspond to a sub-region in the transition display area 30. The greater the thickness of the first metal layer in the first electrode block in the sub-region, the smaller the light transmittance of the sub-region; the smaller the thickness of the first metal layer in the first electrode block in the sub-region, the smaller the The higher the light transmittance, the light transmittance of the sub-region can be adjusted by adjusting the thickness of the first metal layer in the first electrode block in the sub-region, which is convenient for adjusting the light transmittance of each sub-region of the transition display area 30.

Preferably, the transition display area 30 may include multiple sub-areas (for example, a first sub-area, a second sub-area, and a third sub-area). Among the multiple sub-areas of the transition display area 30, the non-transparent display area 20 points to the transparent display area. In the direction of 10, the thickness of the first metal layer in the first electrode block in each sub-region decreases sequentially. This arrangement can make the light transmittance of the sub-regions gradually increase along the direction of the non-transparent display area 20 pointing to the transparent display area 10.

Each sub-region of the transition display area 30 may include multiple pixels, and each pixel may correspond to one first electrode block, or each multiple pixels of the same number may correspond to one first electrode block, and each pixel in the same sub-region The thickness of the first metal layer in the corresponding first electrode block can be the same, so that the thickness of the first metal layer in the same sub-region is the same everywhere, and the light transmittance in the same sub-region is the same. The brightness of the area is uniform, which helps to improve the user experience.

In one embodiment, referring to FIG. 4, the first electrode block 31 located in the transition display area 30 may include two first transparent metal oxide layers 311 and a first transparent metal oxide layer 311 located between the two first transparent metal oxide layers 311. A metal layer 312; the fifth electrode block 21 located in the non-transparent display area 20 may include two first transparent metal oxide layers 211 and a first metal layer 212 located between the two first transparent metal oxide layers 211; The third electrode block 11 located in the transparent display area 10 only includes the first transparent metal oxide layer. The thickness of the first metal layer 212 of the fifth electrode block 21 in the non-transparent display area 20 is greater than the thickness of the first metal layer 312 of the first electrode block 31 in the transition display area 30, so that the first metal layer 312 in the non-transparent display area 20 The light transmittance of the five-electrode block 21 is lower than the light transmittance of the first electrode block 31 in the transition display area 30. In addition, along the direction of the non-transparent display area 20 pointing to the transparent display area 10, the thickness of the first metal layer 312 of each first electrode block 31 in the sub-region of the transition display area 30 gradually decreases, that is, it is close to the non-transparent display area. The thickness of the first metal layer 312 of the first electrode block 31 in the third sub-region of 20 is the largest, and the thickness of the first metal layer 312 of the first electrode block 31 in the first sub-region close to the transparent display area 10 is the smallest, The thickness of the first metal layer 312 of the first electrode block 31 in the second sub-region located between the first sub-region and the third sub-region is centered.

Further, in each sub-region of the transition display area 30, along the direction of the non-transparent display area 20 pointing to the transparent display area 10, the thickness of the first transparent metal oxide layer 311 in the sub-regions gradually increases, so that the transition display area The total thickness of each first electrode block 31 in 30 (the sum of the thickness of the two first transparent metal oxide layers 311 and the thickness of the first metal layer 312) is the same, so that the total thickness of all parts of the transition display area 30 can be the same. It is beneficial to improve the aesthetics of the display substrate 100.

In one embodiment, the light transmittance of the second electrode layer and the first transparent metal oxide layer are both larger. Preferably, the light transmittance of the second electrode layer and the first transparent metal oxide layer is greater than or equal to 70%, for example, 75%, 80%, 85%, 90%, 95%, etc., preferably, the second electrode layer And the light transmittance of the first transparent metal oxide layer is greater than 90%; further, the material of the second electrode layer includes indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. The material of the first transparent metal oxide layer includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. In this way, it can be ensured that the light transmittance of the second electrode layer and the first transparent metal oxide layer is large, so that the thickness of the second electrode layer and the first transparent metal oxide layer is greater than that of the transition display area 30 and the non-transparent display area 20. The light transmittance is less affected, so that adjusting the thickness of the first metal layer and the second metal layer can effectively adjust the light transmittance of the sub-regions of the transition display area 30 and the non-transparent display area.

Preferably, the material of the first metal layer includes silver. The conductivity of silver is good. When the material of the first metal layer is silver, the conductivity of the first electrode layer can be ensured. And when the thickness of silver changes, the light transmittance changes more obviously, so it can be effective by adjusting the thickness of silver. Adjust the light transmittance of the first electrode layer.

In the second solution of the second method, the first electrode block located in the transition display area 30 is a non-transparent electrode block. The pixel density in each sub-region of the transition display area 30 is the same, and the distribution density of the first electrode blocks (that is, the number of first electrode blocks per unit area) in each sub-region of the corresponding transition display area 30 is also the same. The area 20 points in the direction of the transparent display area 10, and the area of the first electrode block corresponding to the pixel in the sub-area gradually decreases.

The smaller the area of the first electrode block in the sub-region, the greater the light transmittance of the region. Therefore, the light transmittance of the sub-region can be adjusted by adjusting the area of the first electrode block in the sub-region, which is convenient for adjusting the light transmittance of each sub-region of the transition display area 30.

5, the first electrode block 33 in the transition display area 30 and the fifth electrode block 23 in the non-transparent display area 20 are respectively non-transparent conductive material, and the third electrode block 13 in the transparent display area 10 is a transparent conductive material. . Along the direction of the non-transparent display area 20 pointing to the transparent display area 10, the area of the first electrode block 33 in the sub-areas of the transition display area 30 decreases successively, that is, in each sub-area of the transition display area 30, it is close to the non-transparent display area. The first electrode block 33 in the third sub-region of the display region 20 has the largest area, and the first electrode block 33 in the first sub-region close to the transparent display region 10 has the smallest area, and is located in the first and third sub-regions The area of the first electrode block 33 in the second sub-region in between is centered. Moreover, the area of the first electrode block 33 in the third sub-region is smaller than the area of the fifth electrode block 23 in the non-transparent display region 20, so that the light transmittance of the third sub-region is smaller than the light transmittance of the non-transparent display region 20.

In the third solution of the second method, the second electrode layer located in the transition display area 30 is a laminated structure of the second transparent metal oxide layer and the second metal layer. Wherein, the second electrode layer is a laminated structure of the second transparent metal oxide layer and the second metal layer means that the second electrode layer includes two or more film layers, and a part of the film layers is the second transparent The metal oxide layer, and the other part of the film layer is the second metal layer.

The greater the thickness of the second metal layer in the sub-region, the smaller the light transmittance of the sub-region; the smaller the thickness of the second metal layer in the sub-region, the greater the light transmittance of the sub-region. The thickness of the second metal layer can adjust the light transmittance of the sub-regions, which is convenient for adjusting the light transmittance of each sub-region of the transition display area 30.

Preferably, along the direction of the non-transparent display area pointing to the transparent display area, the thickness of the second metal layer in the multiple sub-regions of the transition display area is sequentially reduced. This arrangement can make the light transmittance of the sub-regions gradually increase along the direction of the non-transparent display area 20 pointing to the transparent display area 10.

Each sub-region of the transition display region 30 may include a plurality of pixels, and the thickness of the second metal layer in the second electrode layer corresponding to each pixel in the same sub-region may be the same, so that the thickness of the second metal layer in the same sub-region The same everywhere, so the light transmittance of the same sub-region is the same everywhere, and the brightness of the same sub-region is uniform during display.

In one embodiment, referring to FIG. 6, the second electrode layer 32 located in the transition display area 30 is a surface electrode, so an integral second electrode layer 32 can be provided in the same sub-region. The second electrode layer 32 located in the transition display area 30 may include two second transparent metal oxide layers 321 and a second metal layer 322 located between the two second transparent metal oxide layers 321; located in the non-transparent display area The sixth electrode layer 22 of 20 may include two second transparent metal oxide layers 221 and a second metal layer 222 located between the two second transparent metal oxide layers 221; a fourth electrode layer located in the transparent display area 10 12 may include only the second transparent metal oxide layer. The thickness of the second metal layer 222 of the sixth electrode layer 22 in the non-transparent display area 20 is greater than the thickness of the second metal layer 322 of the second electrode layer 32 in the transition display area 30, so that the second metal layer 322 in the non-transparent display area 20 The light transmittance of the six electrode layer 22 is lower than the light transmittance of the second electrode layer 32 in the transition display area 30. In addition, along the direction of the non-transparent display area 20 pointing to the transparent display area 10, the thickness of the second metal layer 322 of the second electrode layer 32 in the sub-region of the transition display area 30 gradually decreases, that is, it is close to the non-transparent display area 20. The thickness of the second metal layer 322 of the second electrode layer 32 in the third subregion is the largest, and the thickness of the second metal layer 322 of the second electrode layer 32 in the first subregion close to the transparent display region 10 is the smallest. The thickness of the second metal layer 322 of the second electrode layer 32 in the second sub-region between the sub-region and the third sub-region is in the middle.

Further, in each sub-areas of the transition display area 30, along the direction of the non-transparent display area 20 to the transparent display area 10, the thickness of the second transparent metal oxide layer 321 in the sub-area gradually increases, so that the transition display area 30 The total thickness of the inner second electrode layer 32 (the sum of the thickness of the two second transparent metal oxide layers 321 and the thickness of the second metal layer 322) is the same, so that the total thickness of the transition display area 30 is the same, which is beneficial to improve The aesthetics of the substrate 100 is displayed.

Preferably, the light transmittance of the first electrode block and the second transparent metal oxide layer is greater than or equal to 70%, such as 75%, 80%, 85%, 90%, 95%, etc., preferably, the first electrode block And the light transmittance of the second transparent metal oxide layer is greater than 90%; further, the material of the first electrode block includes indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. The material of the second transparent metal oxide layer includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. In this way, it can be ensured that the light transmittance of the first electrode block and the second transparent metal oxide layer is relatively large, so that the thickness of the first electrode block and the second transparent metal oxide layer has little effect on the light transmittance of the transition display area 30 Therefore, adjusting the thickness of the second metal layer can effectively adjust the light transmittance of each sub-region of the transition display area 30.

Preferably, the material of the second metal layer includes at least one of magnesium and silver. Magnesium and silver have good conductivity. When the material of the second metal layer is at least one of magnesium and silver, the conductivity of the second electrode layer can be ensured, and the light transmittance changes when the thickness of magnesium and silver changes. Obviously, the light transmittance of the second electrode layer can be effectively adjusted by adjusting the thickness of magnesium and silver.

When preparing the electrode layer shown in FIG. 4 or FIG. 6, a second transparent metal oxide layer in the lower layer is formed in the non-transparent display area 20, the transition display area 30 and the transparent display area 10. The steps are as follows: A thinner second transparent metal oxide layer; then a thinner second transparent metal oxide layer is formed again in the transition display area 20 and the transparent display area 10; then in the second sub-region, the first sub-region and A thin second transparent metal oxide layer is formed in the transparent display area 10; secondly, a thin second transparent metal oxide layer is formed in the first sub-area and the transparent display area 10; finally in the transparent display area 10 A thin second transparent metal oxide layer is formed. In the second transparent metal oxide layer formed in this step, its thickness gradually increases along the direction from the non-transparent display area to the transparent display area.

Then, a second metal layer on the second transparent metal oxide layer is formed in the non-transparent display area 20 and the transition display area 30. The steps are as follows: first, in the non-transparent display area 20 and the transition display area 30 A thinner second metal layer is formed in each area; then a thinner second metal layer is formed in the second sub-area, the third sub-area and the non-transparent display area; then in the third sub-area and the non-transparent display area A thinner second metal layer is formed inside; finally, a thinner second metal layer is formed in the non-transparent display area. The thickness of the second metal layer formed in this step gradually decreases along the direction from the non-transparent display area to the transparent display area.

Finally, a second transparent metal oxide layer on the upper layer is formed in the non-transparent display area 20, the transition display area 30 and the transparent display area 10. The steps are as follows: first, a thin second transparent metal oxide layer is globally formed; A thin second transparent metal oxide layer is formed again in the transition display area 30 and the transparent display area 10; then a thin second layer is formed in the second sub-region, the first sub-region and the transparent display region 10. Transparent metal oxide layer; secondly, a thinner second transparent metal oxide layer is formed in the first sub-region and the transparent display area 10; finally, a thinner second transparent metal oxide layer is formed in the transparent display area 10 . The thickness of the second transparent metal oxide layer in the upper layer formed in this step gradually increases along the direction from the non-transparent display area to the transparent display area.

In one embodiment, the transparent display area 10 includes a substrate and a light-emitting function film layer on the substrate, and the light-emitting function film layer of the transparent display area 10 includes a third electrode layer, an organic light-emitting material on the third electrode layer, and The fourth electrode layer on the organic light emitting material. Wherein, the third electrode layer may be an anode, and the fourth electrode layer may be a cathode.

Referring to FIG. 7, the third electrode layer may include a plurality of third electrode groups 60 arranged along the first direction. Each third electrode group 60 includes at least one third electrode 61. The third electrode group 60 in the same third electrode group 60 The electrodes 61 all extend in the second direction, the second direction is perpendicular to the first direction, and each third electrode is correspondingly provided with a piece of organic light-emitting material or a plurality of pieces of organic light-emitting material arranged at intervals. Wherein, FIG. 7 only uses the first direction as the row direction and the second direction as the column direction as an example for illustration. In other embodiments, the first direction may be the column direction and the second direction as the row direction.

The driving mode of the transparent display area 10 may be passive driving or active driving.

When the driving mode of the transparent display area 10 is passive driving, the third electrode of the same color of the organic light-emitting material correspondingly arranged in each third electrode group can be connected to the same data signal or different data signals, or all third electrode groups Correspondingly disposed third electrodes of the same color of the organic light-emitting materials can be connected to the same data signal or different data signals. As shown in FIG. 8, each electrode group 60 includes two first electrodes 61, and the colors of the organic light-emitting materials corresponding to the two first electrodes 61 included in the same first electrode group 60 are different. The organic light-emitting materials correspondingly arranged on the upper first electrode 61 in the group 60 have the same color, and the organic light-emitting materials correspondingly arranged on the lower first electrode 61 in the plurality of first electrode groups 60 have the same color. Wherein, the first electrode 61 located above in the plurality of first electrode groups 60 is connected to the same data signal, and the first electrode 61 located below in the plurality of first electrode groups 60 is connected to the same data signal. The data signal can be provided by an external circuit, such as a display driver integrated chip (DDIC). Since the first electrodes with the same color of the organic light-emitting material correspondingly arranged in the plurality of first electrode groups are connected to the same data signal, the number of driving currents applied by the external circuit to the transparent display area can be reduced, and the number of channels for the data signal can be reduced. The requirement is small, the number of connecting wires is small, and the area occupied is small, which is more conducive to improving the transparency of the transparent display area. In other embodiments, when the transparent display area is passively driven, the first electrodes 61 included in each first electrode group 60 can also be connected to different data signals.

When the driving mode of the transparent display area 10 is active driving, the third electrode with the same color of the organic luminescent material correspondingly arranged in each third electrode group can be connected to the drain of a switching transistor, and the source of the switching transistor can be connected to data signal. Referring to FIG. 9, each electrode group 60 includes two first electrodes 61, the colors of the organic light-emitting materials correspondingly arranged on the two first electrodes 61 are different, and the first electrode 61 located above in the plurality of first electrode groups 60 The correspondingly arranged organic light-emitting materials have the same color, and the correspondingly arranged organic light-emitting materials on the lower first electrode 62 have the same color. The upper first electrode 61 in the plurality of first electrode groups 60 is respectively connected to the drain of the driving transistor X2 in the same pixel driving circuit, and the lower first electrode 61 in the plurality of first electrode groups 60 is respectively connected to The drain of the driving transistor X2 in a pixel driving circuit, the gate of each driving transistor X2 corresponds to a data signal, and the source of each driving transistor X2 corresponds to a power supply voltage VDD. Each pixel driving circuit also includes a switching transistor X1 and a storage capacitor C. The data lines of the two pixel drive circuits can be respectively connected to different data signal channels of the display driver integrated chip (DDIC), and the scan lines of the two pixel drive circuits can be connected to one row of scan signal channels of the gate drive circuit. In FIG. 9, the pixel driving circuit is only a 2T1C circuit for illustration, but it is not limited to this. The pixel driving circuit may also be a 3T1C circuit, or a 3T2C circuit, or a 7T1C circuit, or a 7T2C circuit. Since the first electrodes of the same color of the organic light-emitting materials correspondingly arranged in the plurality of first electrode groups are connected to the drain of the same switching transistor, the number of pixel circuits can be reduced, and the number of connection wires in the transparent display area is also less , Occupies less area, which is more conducive to improving the transparency of the transparent display area.

Or, when the driving mode of the transparent display area is active driving, one sub-pixel in the transparent display area can be driven by one pixel circuit, and the pixel circuit corresponding to the sub-pixel can be a 1T circuit, or a 2T1C circuit, or a 3T1C circuit, or a 3T2C circuit, or 7T1C circuit, or 7T2C circuit. The 1T circuit means that the pixel circuit includes a transistor, not a capacitor. One sub-pixel is driven by one pixel circuit, which is convenient for controlling each sub-pixel.

In one embodiment, the projection of the third electrode on the substrate is composed of one graphic unit or more than two graphic units, and the graphic unit is circular, oval, dumbbell, gourd or rectangular. Preferably, the graphic unit is in the shape of a circle, an ellipse, a dumbbell, or a gourd, so that the width of the third electrode changes continuously or intermittently, and the distance between two adjacent third electrodes changes continuously or intermittently, thereby The positions of the two adjacent third electrodes where diffraction occurs are different, and the diffraction effects at different positions cancel each other out, thereby effectively reducing the diffraction effect, and thereby ensuring that the image captured by the camera located below the transparent display area has high definition.

In one embodiment, the pixel density of the transparent display area 10 is less than the pixel density of the non-transparent display area 20. Such an arrangement can make the light transmittance of the transparent display area 10 higher, and is also beneficial to reduce the diffraction effect when external light passes through the transparent display area 10.

The embodiment of the present application also provides a display panel. 10, the display panel 200 includes the above-mentioned display substrate 100 and an encapsulation layer 201, and the encapsulation layer 201 is disposed on the side of the display substrate 100 away from the substrate.

In one embodiment, the encapsulation layer 201 may include a polarizer, and the polarizer may cover the non-transparent display area 20 without covering the transparent display area 10 and the transition display area 30; or, the polarizer may cover the non-transparent display area 20 and at least Part of the transition display area 30 does not cover the transparent display area 10. The polarizer can dissipate the reflected light on the surface of the display panel 200 and improve the user experience; the transparent display area 10 is not provided with a polarizer, which can increase the light transmittance of the transparent display area and ensure the normal operation of the photosensitive device disposed under the transparent display area.

The encapsulation layer 201 may also include a glass cover plate or a thin-film encapsulation structure. The thin-film encapsulation structure may include an organic material layer and an inorganic material layer alternately stacked, wherein the organic material layer and the inorganic material layer are both transparent materials, and the material of the inorganic material layer For example, it may be SiO ₂ , SiN _x , Al ₂ O _3, etc., and the material of the organic material layer may be, for example, PI, PET, etc.

In one embodiment, the transparent display area 10, the non-transparent display area 20, and the transition display area 30 of the display substrate 100 share the same substrate, and the organic light-emitting material of the transparent display area 10, the non-transparent display area 20 and the transition display area 30 Formed in the same process. In this way, the manufacturing process flow of the display panel can be simplified.

In one embodiment, the transparent display area 10 may be at least partially surrounded by the transition display area 30. The shape of the transparent display area 10 may be a rectangle as shown in FIG. 1, or may be a drop shape, a circle, a semicircle, an ellipse, a semiellipse, or a diamond shape.

In the display panel 200 provided by the embodiment of the present application, a transition display area 30 is provided between the non-transparent display area 20 and the transparent display area 10 of the display substrate 100, and the maximum light transmittance of the transition display area 30 is less than that of the transparent display area 10. Since the minimum light transmittance is greater than the light transmittance of the non-transparent display area 20, the brightness of the transition area 30 is less than the brightness of the non-transparent display area and greater than the brightness of the transparent display area when the display substrate 100 is displayed; From the non-transparent display area 20 to the transparent display area 10, the light transmittance of the transition display area 30 gradually increases, then the non-transparent display area 20 points to the direction of the transparent display area 10, and the brightness of the transition display area 30 gradually decreases, making the display The display brightness of the substrate 100 gradually transitions from the non-transparent display area 20 to the transparent display area 10, which can avoid a clear dividing line between the non-transparent display area 20 and the transparent display area 10, and can improve the user experience.

The embodiment of the present application also provides a display device. Referring to FIG. 11, the display device 300 may include a device body 301 and the aforementioned display panel 200. Referring to FIG. 12, the device body 301 has a device area 302, and the display panel 200 covers the device body 301. Wherein, at least part of the display panel 200 is the transparent display area 10, the device area 302 is located under the transparent display area 10, and the device area 302 is provided with a photosensitive device 303 that transmits light through the transparent display area 10 to collect light.

The photosensitive device 303 may include a camera and/or a light sensor. In the device area 302, other devices other than the photosensitive device 303, such as a gyroscope or an earpiece, can also be arranged. The device area 302 may be a slotted area, and the transparent display area 10 of the display substrate 100 may be arranged corresponding to the device area 302 so that the photosensitive device 303 can collect external light and other operations through the transparent display area 10.

The above-mentioned display device may be a digital device such as a mobile phone, a tablet, a palm computer, or an iPod.

In the display device 300 provided by the embodiment of the present application, a transition display area 30 is provided between the non-transparent display area 20 and the transparent display area 10 of the display substrate 100, and the maximum light transmittance of the transition display area 30 is less than that of the transparent display area 10. Since the minimum light transmittance is greater than the light transmittance of the non-transparent display area 20, the brightness of the transition area 30 is less than the brightness of the non-transparent display area and greater than the brightness of the transparent display area when the display substrate 100 is displayed; From the non-transparent display area 20 to the transparent display area 10, the light transmittance of the transition display area 30 gradually increases, then the non-transparent display area 20 points to the direction of the transparent display area 10, and the brightness of the transition display area 30 gradually decreases, making the display The display brightness of the substrate 100 gradually transitions from the non-transparent display area 20 to the transparent display area 10, which can avoid a clear dividing line between the non-transparent display area 20 and the transparent display area 10, and can improve the user experience.

In the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. When an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or intervening layers may be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element, or there may be more than one intervening layer or element. In addition, when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or more than one intervening layer or element may also be present. Similar reference numerals indicate similar elements throughout.

Claims

A display substrate includes:

A transparent display area, a non-transparent display area, and a transition display area adjacent to the transparent display area and the non-transparent display area;

Along the direction of the non-transparent display area pointing to the transparent display area, the light transmittance of the transition display area gradually increases, and the minimum light transmittance of the transition display area is greater than the light transmittance of the non-transparent display area The maximum light transmittance of the transition display area is less than the light transmittance of the transparent display area.
The display substrate according to claim 1, wherein the transitional display area comprises a driving circuit layer and a light-emitting function film layer, the light-emitting function film layer is located on the driving circuit layer, and is directed along the non-transparent display area. In the direction of the transparent display area, the light transmittance of the driving circuit layer gradually increases.
The display substrate according to claim 2, wherein the light-emitting function film layer comprises a first electrode layer, an organic light-emitting material, and a second electrode layer, the organic light-emitting material is located on the first electrode layer, and the second electrode layer The electrode layer is located on the organic light-emitting material, and the light transmittance of the pixel area of the first electrode layer and/or the second electrode layer corresponding to each pixel in the transition display area is the same.
3. The display substrate according to claim 2, wherein the driving circuit layer comprises a first conductive layer, a second conductive layer, and a third conductive layer, the second conductive layer is located on the first conductive layer, and the first conductive layer Three conductive layers are located on the second conductive layer, and the material of at least one of the first conductive layer, the second conductive layer, and the third conductive layer includes a transparent conductive material and a non-transparent conductive material;

The transition display area includes a plurality of sub-areas, and the multiple sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and are arranged in a direction in which the non-transparent display area points to the transparent display area. The ratio of the area of the transparent conductive material to the total area of the transparent conductive material and the non-transparent conductive material increases sequentially.
4. The display substrate of claim 4, wherein the driving circuit layer includes a pixel circuit, the pixel circuit includes a transistor and a capacitor, and the first conductive layer includes a gate of the transistor and a bottom plate of the capacitor The second conductive layer includes the upper plate of the capacitor, and the third conductive layer includes the source and drain of the transistor.
The display substrate according to claim 5, wherein the light transmittance of the transparent conductive material is greater than or equal to 70%.
3. The display substrate according to claim 1, wherein the transition display area comprises a driving circuit layer and a light-emitting function film layer on the driving circuit layer, and a direction along the non-transparent display area pointing to the transparent display area, The light transmittance of the light-emitting function film layer gradually increases.
8. The display substrate according to claim 7, wherein the material of the driving circuit layer is a transparent conductive material, or the material of the driving circuit layer includes a transparent conductive material and an opaque conductive material.
8. The display substrate according to claim 7, wherein the light-emitting function film layer comprises a first electrode layer, an organic light-emitting material on the first electrode layer, and a second electrode layer on the organic light-emitting material;

The first electrode layer includes a plurality of first electrode blocks, and the second electrode layer is a surface electrode.
9. The display substrate of claim 9, wherein the first electrode block is a laminated structure of a first transparent metal oxide layer and a first metal layer;

The transition display area includes a plurality of sub-areas, and the multiple sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and are arranged in a direction in which the non-transparent display area points to the transparent display area. The thickness of the first metal layer decreases successively.
10. The display substrate of claim 10, wherein the light transmittance of the second electrode layer and the first transparent metal oxide layer is greater than or equal to 70%.
9. The display substrate of claim 9, wherein the second electrode layer is a stacked structure of a second transparent metal oxide layer and a second metal layer;

The transition display area includes a plurality of sub-areas, and the multiple sub-areas are arranged in a direction in which the non-transparent display area points to the transparent display area, and in a direction in which the non-transparent display area points to the transparent display area, The thickness of the second metal layer decreases successively.
12. The display substrate of claim 12, wherein the light transmittance of the first electrode block and the second transparent metal oxide layer is greater than or equal to 70%.
9. The display substrate according to claim 9, wherein the first electrode block is made of a non-transparent conductive material;

The transition display area includes a plurality of sub-areas, and the multiple sub-areas are arranged along a direction in which the non-transparent display area points to the transparent display area, and are arranged in a direction in which the non-transparent display area points to the transparent display area. The area of the first electrode block decreases successively.
The display substrate according to claim 1, wherein the transparent display area includes a substrate and a light-emitting function film layer located on the substrate, and the light-emitting function film layer of the transparent display area includes a third electrode layer located on the substrate. The organic light-emitting material on the third electrode layer and the fourth electrode layer on the organic light-emitting material;

The third electrode layer includes a plurality of third electrode groups arranged along a first direction, each of the third electrode groups includes at least one third electrode, and the third electrodes in the same third electrode group are all along the second The direction extends, the second direction is perpendicular to the first direction, and a piece of organic light-emitting material or multiple pieces of organic light-emitting material arranged at intervals are correspondingly arranged on each of the third electrodes.
15. The display substrate according to claim 15, wherein the driving mode of the transparent display area is passive driving, and the third electrodes of the same color of the organic light-emitting material correspondingly arranged in each of the third electrode groups are connected to the same data signal Or different data signals, or, the driving mode of the transparent display area is passive driving, and the third electrodes of the same color of the organic light-emitting materials correspondingly arranged in all third electrode groups are connected to the same data signal or different data signals; or

The driving mode of the transparent display area is active driving, and the third electrode of the same color of the organic luminescent material correspondingly arranged in each of the third electrode groups is connected to the drain of a switching transistor, and the source of the switching transistor The data signal is connected, or the driving mode of the transparent display area is active driving, and each sub-pixel in the transparent display area is driven by a corresponding pixel circuit.
15. The display substrate according to claim 15, wherein the projection of the third electrode on the substrate is composed of one graphic unit or two or more graphic units, and the graphic unit is circular, elliptical, or dumbbell-shaped , Gourd-shaped or rectangular.
A display panel comprising the display substrate and packaging layer according to any one of claims 1-17.
The display panel according to claim 18, wherein the encapsulation layer comprises a polarizer, the polarizer covers the non-transparent display area, and does not cover the non-transparent display area and the transition display area; or The polarizer covers the non-transparent display area and at least part of the transition display area, but does not cover the transparent display area.
A display device includes:

The device body has a device area;

The display panel of claim 18, which is covered on the device body;

Wherein, the device area is located below the transparent display area, and a photosensitive device that emits or collects light through the transparent display area is arranged in the device area.