Display panel and display device

Abstract

The invention discloses a display panel and a display device, and belongs to the technical field of display. The display panel comprises a driving backboard, a first electrode layer, a pixel definition layer, an organic light-emitting layer and a second electrode layer. The first electrode layer is located on one side of the driving backboard, and the first electrode layer is provided with a plurality of first electrodes which are arranged separately. The pixel definition layer is located on the side, away from the driving backboard, of the first electrode layer, the pixel definition layer is provided with a plurality of pixel openings, the organic light-emitting layer comprises a plurality of light-emitting parts corresponding to the pixel openings, and the light-emitting parts are located in the corresponding pixel openings. The first electrode is provided with a light-transmitting area and a light-reflecting area, the light-reflecting area is used for reflecting light emitted to the first electrode in light emitted by the light-emitting part, and the light-transmitting area is used for transmitting ambient light emitted into the display panel. Therefore, the orthographic projection area of the pixel openings on the driving backboard can be increased, the aperture ratio of the display panel can be improved, meanwhile, the light emitting brightness of the display surface can be enhanced, and the transparent display effect of the display panel can be improved.

Description

Technical Field

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

[0002] Organic Light Emitting Diode (OLED) is a current-type organic light-emitting device. OLED display panels are widely used in the display field due to their thin thickness, self-luminescence, high resolution, fast response speed, etc. In particular, transparent OLED display panels with clear image quality and realistic display effects allow users to see objects or images arranged on the opposite side of the panel through the panel, and are widely used in the fields of vehicle display and window display.

[0003] A transparent OLED display panel generally includes a driving backplane, a pixel definition layer and a plurality of light-emitting devices arranged on one side of the driving backplane. The pixel definition layer can divide the driving backplane into a plurality of light-emitting areas and a plurality of light-transmitting areas. The light-emitting device can be located in the light-emitting area, and the light-emitting device can be electrically connected to the driving backplane, and the driving backplane can drive the light-emitting device to emit light. The light-transmitting area can transmit the ambient light incident on the display panel, thereby realizing a transparent display.

[0004] However, to ensure transmittance, the area of ​​the direct projection of the light-transmitting area on the driving backplane is larger, while the area of ​​the direct projection of the light-emitting area on the driving backplane is smaller, which will cause the aperture ratio of the transparent OLED display panel to be smaller, resulting in poor display effect of the display panel. Summary of the invention

[0005] The present application provides a display panel and a display device, which can solve the problem that the aperture ratio of a transparent OLED display panel is small, resulting in poor display effect of the display panel. The technical solution is as follows:

[0006] In one aspect, a display panel is provided, comprising: a driving backplane, a first electrode layer, a pixel definition layer, an organic light emitting layer, and a second electrode layer;

[0007] The first electrode layer is located at one side of the driving backplane, and the first electrode layer has a plurality of first electrodes that are separately arranged, and the plurality of first electrodes are all electrically connected to the driving backplane;

[0008] The pixel definition layer is located on a side of the first electrode layer away from the driving backplane, the pixel definition layer has a plurality of pixel openings, the plurality of pixel openings correspond to the plurality of first electrodes one by one, and the orthographic projections of the pixel openings on the driving backplane are located within the orthographic projections of the corresponding first electrodes on the driving backplane;

[0009] The organic light-emitting layer includes a plurality of light-emitting portions corresponding to the plurality of pixel openings, and the light-emitting portions are located within the corresponding pixel openings;

[0010] The second electrode layer is located on a side of the organic light-emitting layer facing away from the driving backplane;

[0011] Wherein, the first electrode has a light-transmitting region and a light-reflecting region, the light-reflecting region is configured to reflect the light among the light emitted by the light-emitting portion that is incident on the first electrode, and the light-transmitting region is configured to transmit the ambient light incident on the display panel.

[0012] Optionally, the plurality of first electrodes are arranged in multiple columns along a first direction and in multiple rows along a second direction, and the first direction intersects with the second direction;

[0013] Wherein, the distance between two adjacent pixel openings in the first direction is less than the width of the pixel opening in the first direction; and / or, the distance between two adjacent pixel openings in the second direction is less than the width of the pixel opening in the second direction.

[0014] Optionally, the first electrode includes: a first transparent electrode and a reflective electrode stacked along a direction away from the driving backplane, and the reflective electrode has a through hole;

[0015] Wherein, the orthographic projection of the light-transmitting region on the driving backplane is located within the orthographic projection of the through hole on the driving backplane.

[0016] Optionally, the reflective electrode has a plurality of the through holes; the plurality of through holes are arranged in multiple columns along the first direction and in multiple rows along the second direction.

[0017] Optionally, a side of the reflective electrode facing away from the driving backplane has a blind hole, and in a direction perpendicular to the driving backplane, the depth of the blind hole is less than the thickness of the reflective electrode;

[0018] Wherein, the orthographic projection of the blind hole on the driving backplane is located within the orthographic projection of the light-reflecting region on the driving backplane.

[0019] Optionally, the number of the light-transmitting regions in the first electrode is multiple, and one of the through holes is distributed in one of the light-transmitting regions;

[0020] The light-reflecting region in the first electrode includes: a first light-reflecting region and a plurality of second light-reflecting regions; the first light-reflecting region surrounds the plurality of second light-reflecting regions and the plurality of light-transmitting regions, and at least one of the blind holes is distributed in one of the second light-reflecting regions.

[0021] Optionally, in any one of the first electrodes, the plurality of light-transmitting regions and the plurality of second light-reflecting regions are alternately arranged in the first direction, and / or, the plurality of light-transmitting regions and the plurality of second light-reflecting regions are alternately arranged in the second direction.

[0022] Optionally, when a plurality of the blind holes are distributed in one of the second light-reflecting regions, the plurality of blind holes are arranged in a plurality along the first direction, and / or, are arranged in a plurality along the second direction.

[0023] Optionally, the included angle between the side wall and the bottom surface of the blind hole is an obtuse angle; or, the inner wall of the blind hole is an arc-shaped concave surface.

[0024] Optionally, the first electrode further includes: a second transparent electrode, the second transparent electrode is located on a side of the reflective electrode away from the driving backplane, and the second transparent electrode is overlapped with the first transparent electrode through the through hole.

[0025] Optionally, the included angle between the side wall of the through hole and the side of the reflective electrode facing the driving backplane is an acute angle.

[0026] Optionally, the display panel has a display area, the display area includes a plurality of display partitions, and the plurality of display partitions are arranged in sequence from the center to the periphery of the display panel;

[0027] Wherein, for any two different display partitions, the light-transmitting ratio of the first electrode in the display partition closer to the center of the display panel is less than the light-transmitting ratio of the first electrode in the display partition farther from the center of the display panel;

[0028] The light-transmitting ratio of the first electrode is: the ratio of the area of the positive projection of the light-transmitting region in the first electrode on the driving backplane to the area of the positive projection of the first electrode on the driving backplane.

[0029] Optionally, the light-transmitting ratios of the first electrodes distributed in the plurality of display partitions increase in sequence along the direction from the center of the display panel to the periphery of the display panel.

[0030] Optionally, the driving backplane includes: a substrate, and a plurality of pixel driving circuits located on one side of the substrate;

[0031] The first electrode layer is located on a side of the plurality of pixel driving circuits away from the substrate, and the plurality of pixel driving circuits are electrically connected to the plurality of first electrodes correspondingly;

[0032] Wherein, the positive projection of the pixel driving circuit on the substrate does not overlap with the positive projection of the light-transmitting region on the substrate.

[0033] On the other hand, a display device is provided, which includes a driving chip and any one of the above-mentioned display panels, and the driving chip is electrically connected to the display panel.

[0034] The beneficial effects brought by the technical solution provided in this application at least include:

[0035] The first electrode of the display panel may have a light-transmitting area, and the light-transmitting area can transmit the ambient light incident on the display panel. In this way, it is possible to ensure the transmittance of the display panel without setting a light-transmitting area outside the pixel opening, achieve a good transparent effect, and increase the area of the positive projection of the pixel opening on the driving backplane, thereby improving the aperture ratio of the display panel and enhancing the transparent display effect. At the same time, the first electrode may also have a light-reflecting area, and the light-reflecting area can reflect the light incident on the first electrode among the light emitted by the light-emitting part, thereby enhancing the light-emitting brightness of the display surface and further improving the transparent display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 is a schematic diagram of the film layer structure of a display panel provided by an embodiment of the present application;

[0038] Figure 2 is another schematic diagram of the film layer structure of a display panel provided by an embodiment of the present application;

[0039] Figure 3 is another schematic diagram of the film layer structure of a display panel provided by an embodiment of the present application;

[0040] Figure 4 is a top view of a display panel provided by an embodiment of the present application;

[0041] Figure 5 is a top view of a pixel opening provided by an embodiment of the present application;

[0042] Figure 6 is Figure 4 a schematic diagram of the film layer structure of the pixel opening shown at B - B';

[0043] Figure 7 is another top view of a pixel opening provided by an embodiment of the present application;

[0044] Figure 8It is a schematic diagram of the film layer structure of another display panel provided by an embodiment of the present application;

[0045] Figure 9 It is a top view of a pixel opening provided by an embodiment of the present application;

[0046] Figure 10 It is a schematic diagram of the film layer structure of another display panel provided by an embodiment of the present application;

[0047] Figure 11 It is a schematic diagram of the structure of a blind via provided by an embodiment of the present application;

[0048] Figure 12 It is a schematic diagram of the structure of another blind via provided by an embodiment of the present application;

[0049] Figure 13 It is a top view of a display panel provided by an embodiment of the present application;

[0050] Figure 14 It is Figure 13 A top view of the pixel openings within the display partition A1 shown;

[0051] Figure 15 It is Figure 13 A top view of the pixel openings within the display partition A2 shown;

[0052] Figure 16 It is Figure 13 A top view of the pixel openings within the display partition A3 shown;

[0053] Figure 17 It is a schematic diagram of the film layer structure of another display panel provided by an embodiment of the present application. Detailed implementation manners

[0054] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe in detail the embodiments of the present application with reference to the accompanying drawings.

[0055] In the related art, a transparent OLED display panel generally includes: a driving backplane, a pixel definition layer, and a plurality of light-emitting devices.

[0056] The pixel definition layer is located on one side of the driving backplane. The pixel definition layer can divide the driving backplane into a plurality of light-emitting regions and a plurality of light-transmitting regions. The light-emitting regions can be used for light emission to enable the display panel to display an image. The light-transmitting regions can be used for transmitting the ambient light incident on the display panel to enable the display panel to achieve a transparent effect.

[0057] Multiple light-emitting devices may correspond to multiple light-emitting regions. The light-emitting devices may be located in the corresponding light-emitting regions, and the light-emitting devices may be electrically connected to the driving backplane, so that the driving backplane can drive the light-emitting devices to emit light, enabling the display panel to display an image.

[0058] To ensure that the display panel has a good transparency effect, it is necessary to ensure that the transmittance of the display panel is high. Therefore, it is necessary to make the area of the positive projection of the light-transmitting region on the driving backplane large. However, this will cause the area of the positive projection of the light-emitting region on the driving backplane to decrease, resulting in a small aperture ratio of the display panel, and further resulting in a poor display effect of the display panel.

[0059] Embodiments of the present application provide a display panel, which can solve the problem that the aperture ratio of a transparent OLED display panel in the related art is small, resulting in a poor display effect of the display panel. Please refer to Figures 1 to 3 , Figure 1 is a schematic diagram of the film layer structure of a display panel provided by an embodiment of the present application, Figure 2 is another schematic diagram of the film layer structure of a display panel provided by an embodiment of the present application, Figure 3 is another schematic diagram of the film layer structure of a display panel provided by an embodiment of the present application. The display panel 000 may include: a driving backplane 100, a first electrode layer 200, a pixel definition layer 300, an organic light-emitting layer 400, and a second electrode layer 500.

[0060] The first electrode layer 200 may be located on one side of the driving backplane 100. The first electrode layer 200 has a plurality of first electrodes 210 that are separately arranged, and the plurality of first electrodes 210 can all be electrically connected to the driving backplane 100.

[0061] The pixel definition layer 300 may be located on the side of the first electrode layer 200 facing away from the driving backplane 100. The pixel definition layer 300 may have a plurality of pixel openings U, and the plurality of pixel openings U may correspond to the plurality of first electrodes 210 one by one, and the positive projection of the pixel opening U on the driving backplane 100 may be located within the positive projection of the corresponding first electrode 210 on the driving backplane 100.

[0062] The organic light-emitting layer 400 may be located on the side of the pixel definition layer 300 facing away from the driving backplane 100. The organic light-emitting layer 400 may include a plurality of light-emitting portions 410, and the plurality of light-emitting portions 410 may correspond to the plurality of pixel openings U one by one, and the light-emitting portion 410 may be located within the corresponding pixel opening U.

[0063] The second electrode layer 500 may be located on the side of the organic light-emitting layer 400 facing away from the driving backplane 100.

[0064] In this way, the light-emitting part 410 located within the pixel opening U can be in contact with the second electrode layer 500 and also with the first electrode 210. Then, the light-emitting part 410 within one pixel opening U and the first electrode 210 and the second electrode layer 500 in contact therewith can serve as a light-emitting device. When corresponding voltages are applied to the first electrode 210 and the second electrode layer 500, an electric field will be formed between the first electrode 210 and the second electrode layer 500, and the light-emitting part 410 located within the electric field can emit light. That is to say, the light-emitting device can emit light, enabling the display panel 000 to display an image.

[0065] Among them, the first electrode layer 200 can be an anode layer, and the second electrode layer 500 can be a cathode layer; or, the first electrode layer 200 can be a cathode layer, and the second electrode layer 500 can be an anode layer. The embodiments of the present application do not limit this. The embodiments of the present application will be schematically described by taking the first electrode layer 200 as the anode layer and the second electrode layer 500 as the cathode layer as an example.

[0066] It should be noted that the first electrode 210 can have a light-transmitting area 10, and the light-transmitting area 10 can be used to transmit the ambient light incident on the display panel 000, thereby ensuring the transmittance of the display panel 000 and achieving a transparent effect. At the same time, since there is no need to provide a light-transmitting area outside the pixel opening U to transmit ambient light, the area of the positive projection of the pixel opening U on the driving backplane 100 can be increased, and the light-emitting area of the light-emitting part 410 located within the pixel opening U can also be increased, thereby improving the aperture ratio of the display panel 000 and further enhancing the display effect.

[0067] It should also be noted that the first electrode 210 can also have a light-reflecting area 20, and the light-reflecting area 20 can be used to reflect the light emitted by the light-emitting part 410 that is incident on the first electrode 210, thereby enhancing the light-emitting brightness of the display surface and further improving the display effect of the display panel 000.

[0068] Here, voltages can also be applied to the light-transmitting area 10 and the light-reflecting area 20 in the first electrode 210. That is to say, the parts of the light-emitting part 410 within the pixel opening U that are in contact with the light-transmitting area 10 and the light-reflecting area 20 can also emit light. In this way, the aperture ratio of the display panel 000 can be further improved, thereby further enhancing the transparent display effect of the display panel 000.

[0069] In summary, the embodiment of the present application provides a display panel. The first electrode of the display panel may have a light-transmitting region, and the light-transmitting region may transmit the ambient light incident on the display panel. In this way, it is not necessary to provide a light-transmitting region outside the pixel opening to ensure the transmittance of the display panel, achieve a good transparent effect, and increase the area of the positive projection of the pixel opening on the driving backplane, thereby improving the aperture ratio of the display panel and enhancing the transparent display effect. At the same time, the first electrode may also have a light-reflecting region, and the light-reflecting region may reflect the light incident on the first electrode among the light emitted by the light-emitting portion, thereby enhancing the light-emitting brightness of the display surface and further improving the transparent display effect of the display panel.

[0070] Please refer to Figure 4 , a plurality of first electrodes 210 may be arranged in multiple columns along the first direction X and in multiple rows along the second direction Y, and the first direction X intersects with the second direction Y.

[0071] Optionally, the distance between two adjacent pixel openings U in the first direction X may be less than the width of the pixel opening U in the first direction X; and / or, the distance between two adjacent pixel openings U in the second direction Y may be less than the width of the pixel opening U in the second direction Y.

[0072] In this way, the area outside the pixel opening U is small, which can ensure that there is no light-transmitting region outside the pixel opening U, so that the area of the positive projection of the pixel opening U on the driving backplane 100 can be large, and thus the aperture ratio of the display panel 000 can be improved, achieving a good transparent display effect.

[0073] Please refer to Figure 2 and Figure 3 , the first electrode 210 may include: a first transparent electrode 211 and a reflective electrode 212 stacked in a direction away from the driving backplane 100, and the first transparent electrode 211 may be electrically connected to the driving backplane 100.

[0074] Among them, the first transparent electrode 211 may be made of a transparent conductive material, such as indium tin oxide and indium zinc oxide, and the reflective electrode 212 may be made of various metal materials, such as silver. In this way, the first transparent electrode 211 can transmit light, and the reflective electrode 212 can reflect light.

[0075] As Figure 2 and Figure 3 shown, the reflective electrode 212 may have a through hole K1, and in the direction perpendicular to the driving backplane 100, the depth of the through hole K1 is equal to the thickness of the reflective electrode 212. In this way, a part of the first transparent electrode 211 may be exposed in the through hole K1, and this part of the first transparent electrode 211 may transmit the ambient light incident on the display panel 000, so that the display panel 000 can achieve a transparent effect.

[0076] In this way, the portion of the first electrode 210 corresponding to the through hole K1 can be a light-transmitting region 10. Then, the orthographic projection of the light-transmitting region 10 on the driving backplane 100 can be located within the orthographic projection of the through hole K1 on the driving backplane 100. That is to say, the through holes K1 can be distributed within the light-transmitting region 10.

[0077] It should be noted that the transmittance of the display panel 000 is related to the size of the light-transmitting region 10. The larger the area of the orthographic projection of the light-transmitting region 10 on the driving backplane 100, the higher the transmittance of the display panel 000 and the better the transparency effect. On the contrary, the smaller the area of the orthographic projection of the light-transmitting region 10 on the driving backplane 100, the lower the transmittance of the display panel 000 and the worse the transparency effect. And the size of the light-transmitting region 10 can be controlled by adjusting the size of the through hole K1, so that the display panel 000 can achieve different transparency effects.

[0078] It should also be noted that the transmittance of the display panel 000 is independent of the shape of the light-transmitting region 10. That is to say, the transmittance of the display panel 000 is independent of the shape of the through hole K1. More preferably, as Figure 2 and Figure 3 shown, the included angle between the side wall of the through hole K1 and the side of the reflective electrode 212 facing the driving backplane 100 can be an acute angle. In this way, the side wall of the through hole K1 can also reflect light, thereby further improving the light-emitting brightness of the display surface.

[0079] In the embodiment of the present application, the reflective electrode 212 in the first electrode 210 can have at least one through hole K1. That is to say, the first electrode 210 can have at least one light-transmitting region 10. The number of the through holes K1 and the light-transmitting regions 10 is not limited in the embodiment of the present application.

[0080] In a possible implementation manner, please refer to Figure 5 and Figure 6 , the reflective electrode 212 can have one through hole K1. That is to say, the first electrode 210 can have one light-transmitting region 10. And the light-reflecting region 20 can be located on one side of the light-transmitting region 10, or the light-reflecting region 20 can be located on both sides of the light-transmitting region 10. Exemplarily, please refer to Figure 5 , the light-reflecting region 20 can be located on one side of the light-transmitting region 10 in the second direction Y.

[0081] Thus, the ambient light incident on the display panel 000 needs to pass through a light-transmitting area 10 in each of the first electrodes 210. Therefore, it is necessary to ensure that the area of the orthographic projection of the light-transmitting area 10 on the driving backplane 100 is large. That is, it is necessary to ensure that the area of the orthographic projection of the through hole K1 on the driving backplane 100 is large, so as to ensure the transmittance of the display panel 000. The light-reflecting area 20 can reflect the light emitted by the light-emitting part 410 and incident on the first electrode 210, thereby improving the light-emitting brightness of the display surface. Therefore, it is also necessary to ensure that the area of the orthographic projection of the light-reflecting area 20 on the driving backplane 100 is large. For this purpose, the sizes of the light-transmitting area 10 and the light-reflecting area 20 can be adjusted according to actual requirements, so as to achieve a relatively good transparent display effect.

[0082] In another possible implementation, please refer to Figure 2 , Figure 3 and Figure 7 , the reflective electrode 212 may have a plurality of through holes K1. The plurality of through holes K1 may be arranged in multiple columns along the first direction X and in multiple rows along the second direction Y. That is, the first electrode 210 may have a plurality of light-transmitting areas 10. The plurality of light-transmitting areas 10 may be arranged in multiple columns along the first direction X and in multiple rows along the second direction Y. The light-reflecting area 20 may be distributed around the plurality of light-transmitting areas 10, and the light-reflecting area 20 may be arranged in a grid pattern.

[0083] Thus, the ambient light incident on the display panel 000 can pass through the plurality of light-transmitting areas 10 in each of the first electrodes 210, and the light emitted by the light-emitting part 410 and incident on the first electrode 210 can be reflected by the light-reflecting area 20 in each of the first electrodes 210. Among them, the number of the light-transmitting areas 10 is not limited. By adjusting the area of the orthographic projection of the plurality of light-transmitting areas 10 in the first electrode 210 on the driving backplane 100 and the area of the orthographic projection of the light-reflecting area 20 on the driving backplane 100, different transparent display effects can be achieved for the display panel 000.

[0084] Please refer to Figure 8 , a blind hole K2 may be provided on the side of the reflective electrode 212 facing away from the driving backplane 100. In the direction perpendicular to the driving backplane 100, the depth of the blind hole K2 is less than the thickness of the reflective electrode 212. That is, the depth of the blind hole K2 may be less than the depth of the through hole K1.

[0085] Thus, the bottom surface of the blind hole K2 can reflect the light emitted by the light-emitting part 410 and incident on the first electrode 210, thereby enhancing the light-emitting brightness of the display surface of the display panel 000.

[0086] In this way, a part of the first electrode 210 corresponding to the blind hole K2 can be a reflective area 20. Then, the orthographic projection of the blind hole K2 on the driving backplane 100 can be located within the orthographic projection of the reflective area 20 on the driving backplane 100. That is to say, the blind hole K2 can be distributed within the reflective area 20.

[0087] In a possible case, please refer to Figure 8 and Figure 9 , the reflective area 20 in the first electrode 210 can include: a first reflective area 21 and a second reflective area 22. Wherein, a part of the first electrode 210 corresponding to the blind hole K2 can be the second reflective area 22.

[0088] The first electrode 210 can include multiple second reflective areas 22, and can also include multiple light-transmitting areas 10. The first reflective area 21 can be distributed around the multiple second reflective areas 22 and the multiple light-transmitting areas 10, and the first reflective area 21 can be arranged in a grid pattern.

[0089] In any one of the first electrodes 210, the multiple light-transmitting areas 10 and the multiple second reflective areas 22 can be alternately arranged in the first direction X, and / or, the multiple light-transmitting areas 10 and the multiple second reflective areas 22 can be alternately arranged in the second direction Y. Exemplarily, as Figure 9 shown, the multiple light-transmitting areas 10 and the multiple second reflective areas 22 can be alternately arranged in the first direction X and alternately arranged in the second direction Y.

[0090] In this way, it can be ensured that the multiple second reflective areas 22 are more evenly distributed among the multiple light-transmitting areas 10. The multiple second reflective areas 22 can reflect light at different angles incident on the first electrode 210, thereby better improving the light output brightness of the display surface. At the same time, it also ensures that the light transmitted through the light-transmitting areas 10 and the light reflected by the reflective areas 20 are emitted more evenly, thereby improving the transparent display effect.

[0091] It should be noted that the improvement of the light output brightness of the display surface by the reflective area 20 is related to the size of the reflective area 20. The larger the area of the orthographic projection of the reflective area 20 on the driving backplane 100, the more light the reflective area 20 can receive and reflect, and thus the higher the light output brightness of the display surface; conversely, the smaller the area of the orthographic projection of the reflective area 20 on the driving backplane 100, the less light the reflective area 20 can receive and reflect, and thus the lower the light output brightness of the display surface. And the size of the reflective area 20 can be controlled by adjusting the size of the blind hole K2 and the size of the first reflective area 21.

[0092] In the embodiments of the present application, one through hole K1 can be distributed within one light-transmitting area 10, and at least one blind hole K2 can be distributed within one second reflective area 22.

[0093] In a possible implementation manner, please refer toFigure 8 Inside a second light reflecting area 22, a blind hole K2 may be distributed. In this way, the portion of the first electrode 210 corresponding to one blind hole K2 is a second light reflecting area 22, and the size of the second light reflecting area 22 can be adjusted by adjusting the size of the blind hole K2.

[0094] In another possible implementation, please refer to Figure 10 Inside a second light reflecting area 20, multiple blind holes K2 may be distributed. In this way, the portion of the first electrode 210 corresponding to the multiple blind holes K2 is a second light reflecting area 22, and the size of the second light reflecting area 22 can be adjusted by adjusting the size of the multiple blind holes K2.

[0095] Among them, inside a second light reflecting area 22, the multiple blind holes K2 may be arranged in multiple rows along the first direction X, and / or the multiple blind holes K2 may be arranged in multiple rows along the second direction Y.

[0096] It should also be noted that the improvement of the light emission brightness of the display surface by the light reflecting area 20 is related to the shape of the blind hole K2. The blind hole K2 may have various shapes, and the embodiments of the present application will be schematically described by taking the following two possible cases as examples.

[0097] In one possible case, as Figure 11 shown, the angle α between the side wall of the blind hole K2 and the bottom surface of the blind hole K2 is an obtuse angle. In this way, both the side wall and the bottom surface of the blind hole K2 can reflect light, and the side wall of the blind hole K2 can make the reflected light more concentrated, so as to better improve the light emission brightness of the display surface. Among them, the angle α between the side wall of the blind hole K2 and the bottom surface of the blind hole K2 may be greater than 135 degrees, and preferably, the angle α may be greater than 150 degrees, so that it can be ensured that the side wall of the blind hole K2 better concentrates the reflected light.

[0098] In another possible case, as Figure 12 shown, the inner wall of the blind hole K2 may be an arc-shaped concave surface, such as a spherical surface. In this way, the inner wall of the blind hole K2 can reflect light, and it can also make the reflected light more concentrated and better improve the light emission brightness of the display surface.

[0099] To better realize the shape of the blind hole K2, the reflective electrode 212 may be a stack of multiple layers of metals or a stack of multiple layers of alloys. Among them, the etching rates of the multiple layers in the same etching conditions are different, and along the direction away from the driving backplane 100, the etching rates of the multiple layers in the same etching conditions increase in sequence. In this way, a blind hole K2 with a better reflection effect can be manufactured.

[0100] Please refer to Figure 3 、 Figure 6 、 Figure 8 and Figure 10, the first electrode 210 may further include a second transparent electrode 213. The second transparent electrode 213 may be located on a side of the reflective electrode 212 away from the driving backplane 100, and the second transparent electrode 213 may be overlapped with the first transparent electrode 211 through a through hole K1.

[0101] Wherein, the second transparent electrode 213 may also be made of a transparent conductive material, such as indium tin oxide and indium zinc oxide, so the second transparent electrode 213 may also transmit light.

[0102] In this way, the first transparent electrode 211 and the second transparent electrode 213 at positions corresponding to the through hole K1 may transmit the ambient light incident on the display panel 000, so as to achieve a transparent effect.

[0103] The second transparent electrode 213 in the first light reflection area 21 and the second light reflection area 22 may be overlapped with the reflective electrode 212. In this way, the reflective electrode 212 may reflect light, and the reflected light may be emitted through the second transparent electrode 213, so as to enhance the light emission brightness of the display surface.

[0104] Please refer to Figure 13 , the display panel 000 may have a display area, the display area may include a plurality of display partitions A, and the plurality of display partitions A are arranged in sequence from the center to the periphery of the display panel 000. For any two adjacent display partitions A, the display partition A farther from the center of the display panel 000 may be arranged to surround the display partition A closer to the center of the display panel 000.

[0105] Here, the display area of the display panel 000 may be an area for displaying images or texts, and the plurality of display partitions A may also be areas for displaying images or texts. In addition, Figure 13 is only a schematic diagram, Figure 13 the number of the displayed display partitions A shown is three, which does not represent the actual number of the display partitions A. The actual number of the display partitions A may also be more than three or less than three, and the embodiments of the present application do not limit this.

[0106] For any two different display partitions A, the light transmission ratio of the first electrode 210 distributed in the display partition A closer to the center of the display panel 000 may be less than the light transmission ratio of the first electrode 210 distributed in the display partition A farther from the center of the display panel 000; and for any two different display partitions A, the light reflection ratio of the first electrode 210 distributed in the display partition A closer to the center of the display panel 000 may be greater than the light reflection ratio of the first electrode 210 distributed in the display partition A farther from the center of the display panel 000.

[0107] It should be noted that the light transmission ratio of the first electrode 210 refers to the ratio of the area of the light-transmitting region 10 in the first electrode 210 projected orthogonally onto the driving backplane 100 to the area of the first electrode 210 projected orthogonally onto the driving backplane 100; the light reflection ratio of the first electrode 210 refers to the ratio of the area of the light-reflecting region 20 in the first electrode 210 projected orthogonally onto the driving backplane 100 to the area of the first electrode 210 projected orthogonally onto the driving backplane 100.

[0108] In this way, the light transmission ratio of the first electrode 210 in the display partition A that is more distant from the center of the display panel 000 is higher, that is, the transparency of the display partition A that is more distant from the center of the display panel 000 is higher. And the light reflection ratio of the first electrode 210 in the display partition A that is more distant from the center of the display panel 000 is lower, that is, the amount of light reflected by the light-reflecting region 20 in this display partition A is less. Therefore, a phenomenon of unclear display may occur at the edge of the display area.

[0109] However, since the light reflection ratio of the first electrode 210 in the display partition A that is closer to the center of the display panel 000 is higher, that is, the amount of light reflected by the light-reflecting region 20 in this display partition A is more, the brightness of the entire display surface can be increased, thereby ensuring a good transparent display effect.

[0110] In the embodiment of the present application, the light transmission ratios of the respective first electrodes 210 in the same display partition A are relatively close, and the light reflection ratios of the respective first electrodes 210 in the same display partition A are relatively close. In this way, it can be ensured that the amounts of light transmitted by the respective first electrodes 210 in the same display partition A are relatively close, and the amounts of light reflected by the respective first electrodes 210 are also relatively close, so that the transparency of each position in the same display partition A can be ensured to be relatively consistent, and the display effects are also relatively consistent.

[0111] For different display partitions A, the light transmission ratios of the first electrodes 210 in different display partitions A are different. Along the direction from the center of the display panel 000 to the periphery of the display panel 000, the light transmission ratios of the first electrodes 210 in multiple display partitions A increase in sequence; and the light reflection ratios of the first electrodes 210 in different display partitions A are different. Along the direction from the center of the display panel 000 to the periphery of the display panel 000, the light reflection ratios of the first electrodes 210 in multiple display partitions A decrease in sequence.

[0112] Exemplarily, along the direction from the center to the periphery of the display panel 000, Figure 13 The three display partitions A shown are the display partition A1, the display partition A2, and the display partition A3 in sequence.

[0113] Please refer toFigures 14 to 16 , Figure 14 is a top view of a pixel aperture distributed within display partition A1. Figure 15 is a top view of a pixel aperture distributed within display partition A2. Figure 16 is a top view of a pixel aperture distributed within display partition A3.

[0114] As can be seen from the figure, the light transmission ratio of the first electrode 210 distributed within display partition A1 is the lowest, and the light reflection ratio is the highest. While the light transmission ratio of the first electrode 210 distributed within display partition A3 is the highest, and the light reflection ratio is the lowest. That is, the light transmission ratios of the first electrode 210 distributed within display partitions A1, A2, and A3 increase in sequence, and the light reflection ratios of the first electrode 210 distributed within display partitions A1, A2, and A3 decrease in sequence.

[0115] In this way, the transparency gradually increases from the center of display panel 000 to the periphery of display panel 000, achieving a gradient effect, and the brightness of the entire display surface of display panel 000 is also relatively uniform. Thus, users can view the display image through display panel 000, and at the same time, they can also view the objects or images set on the side of the driving backplane 100 of display panel 000 through display panel 000, thereby enhancing the user experience.

[0116] Please refer to Figure 1 and Figure 17 , the driving backplane 100 may include: a substrate 101, and a plurality of pixel driving circuits located on one side of the substrate 101.

[0117] The first electrode layer 200 may be located on the side of the plurality of pixel driving circuits away from the substrate 101. The plurality of pixel driving circuits may correspond to the plurality of first electrodes 210, and the pixel driving circuits may be electrically connected to the corresponding first electrodes 210. In this way, the pixel driving circuits can drive the first electrodes 210, so that the display panel 000 can perform image display.

[0118] It should be noted that a part of the pixel driving circuit is opaque, such as the thin film transistor T. Therefore, the ambient light incident from the side of the driving backplane 100 of the display panel 000 may be blocked by the thin film transistor T, so that part of the ambient light cannot pass through the light transmission area 10 of the first electrode 210, and further resulting in a poor transparent effect of the display panel 000.

[0119] Therefore, in the embodiments of the present application, it is necessary to ensure that the orthographic projection of the pixel driving circuit on the substrate 101 does not overlap with the orthographic projection of the light-transmitting region 10 on the substrate 101. Specifically, it is necessary to ensure that the orthographic projection of the thin-film transistor T on the substrate 101 does not overlap with the orthographic projection of the light-transmitting region 10 on the substrate 101. This can ensure that the pixel driving circuit does not block the ambient light that will be transmitted through the light-transmitting region 10. In this way, the orthographic projection of the pixel driving circuit on the substrate 101 can overlap with the orthographic projection of the light-reflecting region 20 on the substrate 101, so as not to affect the transparency effect of the display panel 000.

[0120] It should be noted that, in the embodiments of the present application, the through holes K1 and blind holes K2 in the first electrode 210 can be fabricated by using a mask plate. In this way, the first electrode 210 with different numbers or shapes of light-transmitting regions 10 and light-reflecting regions 20 can be fabricated more conveniently, so as to achieve different transparent display effects.

[0121] In summary, the embodiments of the present application provide a display panel. The first electrode of the display panel can have a light-transmitting region, and the light-transmitting region can transmit the ambient light incident on the display panel. In this way, without setting a light-transmitting region outside the pixel opening, the transmittance of the display panel can be ensured, a good transparent effect can be achieved, and the area of the orthographic projection of the pixel opening on the driving backplane can be increased, thereby improving the aperture ratio of the display panel and enhancing the transparent display effect. At the same time, the first electrode can also have a light-reflecting region, and the light-reflecting region can reflect the light incident on the first electrode among the light emitted by the light-emitting part, so as to enhance the light-emitting brightness of the display surface and further improve the transparent display effect of the display panel.

[0122] The embodiments of the present application also provide a display device, which can be: any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc.

[0123] The display device can include: a driving chip and a display panel. Among them, the display panel can be a transparent OLED display panel. The display panel can be the display panel 000 in the above embodiments, and the driving chip can be electrically connected to the display panel 000, so as to drive the display panel 000 to display a picture.

[0124] It should be noted that in the drawings, the dimensions of layers and regions may be exaggerated for clarity of illustration. Also, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be an intermediate layer. Additionally, it is 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 intermediate layer or element. Further, it is understood that 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 there may also be more than one intermediate layer or element. Like reference numerals throughout indicate like elements.

[0125] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0126] The above are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A display panel, characterized in that: include: A driving backplane, a first electrode layer, a pixel definition layer, an organic light emitting layer, and a second electrode layer; The first electrode layer is located at one side of the driving backplane, and the first electrode layer has a plurality of first electrodes that are separately arranged, and the plurality of first electrodes are all electrically connected to the driving backplane; The pixel definition layer is located on a side of the first electrode layer away from the driving backplane, the pixel definition layer has a plurality of pixel openings, the plurality of pixel openings correspond to the plurality of first electrodes one by one, and the orthographic projections of the pixel openings on the driving backplane are located within the orthographic projections of the corresponding first electrodes on the driving backplane; The organic light-emitting layer includes a plurality of light-emitting portions corresponding to the plurality of pixel openings, and the light-emitting portions are located in the corresponding pixel openings; The second electrode layer is located on a side of the organic light emitting layer away from the driving backplane; The first electrode has a light-transmitting area and a light-reflecting area, the light-reflecting area is used to reflect the light emitted by the light-emitting portion that is directed toward the first electrode, and the light-transmitting area is used to transmit ambient light incident on the display panel.

2. The display panel according to claim 1, characterized in that: The plurality of first electrodes are arranged in a plurality of columns along a first direction and in a plurality of rows along a second direction, and the first direction intersects with the second direction; Wherein, the distance between two adjacent pixel openings in the first direction is smaller than the width of the pixel opening in the first direction; and / or, the distance between two adjacent pixel openings in the second direction is smaller than the width of the pixel opening in the second direction.

3. The display panel according to claim 1, characterized in that: The first electrode comprises: a first transparent electrode and a reflective electrode stacked away from the driving backplane, wherein the reflective electrode has a through hole; Wherein, the orthographic projection of the light-transmitting area on the driving backplane is located within the orthographic projection of the through hole on the driving backplane.

4. The display panel according to claim 3, characterized in that: The reflective electrode has a plurality of through holes; the plurality of through holes are arranged in a plurality of columns along the first direction, and are arranged in a plurality of rows along the second direction.

5. The display panel according to claim 3, characterized in that: The reflective electrode has a blind hole on one side away from the driving back plate, and in a direction perpendicular to the driving back plate, the depth of the blind hole is less than the thickness of the reflective electrode; The orthographic projection of the blind hole on the driving back plate is located within the orthographic projection of the reflective area on the driving back plate.

6. The display panel according to claim 5, characterized in that: There are multiple light-transmitting areas in the first electrode, and one through hole is distributed in each light-transmitting area; The reflective area in the first electrode includes: a first reflective area and a plurality of second reflective areas; the first reflective area is distributed around the plurality of second reflective areas and the plurality of light-transmitting areas, and at least one blind hole is distributed in one of the second reflective areas.

7. The display panel according to claim 6, characterized in that: In any one of the first electrodes, a plurality of the light-transmitting regions and a plurality of the second light-reflecting regions are alternately arranged in the first direction, and / or a plurality of the light-transmitting regions and a plurality of the second light-reflecting regions are alternately arranged in the second direction.

8. The display panel according to claim 6, characterized in that: In the case where a plurality of the blind holes are distributed in one of the second light reflecting areas, the plurality of the blind holes are arranged in plurality along the first direction and / or are arranged in plurality along the second direction.

9. The display panel according to any one of claims 5 to 8, characterized in that: The angle between the side wall of the blind hole and the bottom surface of the blind hole is an obtuse angle; or, the inner wall of the blind hole is an arc-shaped concave surface.

10. The display panel according to any one of claims 3 to 8, characterized in that: The first electrode further includes: a second transparent electrode, the second transparent electrode is located on a side of the reflective electrode away from the driving back plate, and the second transparent electrode is overlapped with the first transparent electrode through the through hole.

11. The display panel according to any one of claims 3 to 8, characterized in that: An angle between a side wall of the through hole and a side of the reflective electrode facing the driving back plate is an acute angle.

12. The display panel according to any one of claims 1 to 8, characterized in that: The display panel has a display area, the display area includes a plurality of display subareas, and the plurality of display subareas are sequentially arranged from the center to the periphery of the display panel; Wherein, for any two different display partitions, the light transmittance ratio of the first electrode in the display partition closer to the center of the display panel is smaller than the light transmittance ratio of the first electrode in the display partition further away from the center of the display panel; The light transmittance ratio of the first electrode is: the ratio of the area of ​​the orthographic projection of the light transmittance region in the first electrode on the driving backplane to the area of ​​the orthographic projection of the first electrode on the driving backplane.

13. The display panel according to claim 12, characterized in that: The light transmittance ratio of the first electrodes distributed in the plurality of display subareas increases sequentially from the center of the display panel to the periphery of the display panel.

14. The display panel according to any one of claims 1 to 8 and 13, characterized in that: The driving backplane comprises: a substrate, and a plurality of pixel driving circuits located on one side of the substrate; The first electrode layer is located on a side of the plurality of pixel driving circuits away from the substrate, and the plurality of pixel driving circuits are electrically connected to the plurality of first electrodes correspondingly; The orthographic projection of the pixel driving circuit on the substrate does not overlap with the orthographic projection of the light-transmitting area on the substrate.

15. A display device, characterized in that: It comprises a driving chip and the display panel according to any one of claims 1 to 14, wherein the driving chip is electrically connected to the display panel.

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