Display panel and display device

Abstract

An embodiment of the present invention discloses a display panel and a display device; the display panel includes a main display area, a light-transmitting display area, and a transition display area. The display panel includes a plurality of first pixels located in the main display area, a plurality of second pixels located in the light-transmitting display area and the transition display area, a plurality of first pixel driving circuits located in the main display area and used to drive the plurality of first pixels, a plurality of second pixel driving circuits located in the transition display area, and a reflecting member. The plurality of second pixel driving circuits form a plurality of driving circuit islands for driving the plurality of second pixels. The reflecting member includes a plurality of first reflecting portions located on the driving circuit islands. By providing a plurality of first reflecting portions on the pixel driving circuit islands in the transition display area of the display panel, the reflectivities of the main display area and the transition display area can be made to tend to be the same, thereby improving the display uniformity of the display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display panel and a display device. Background Art

[0002] In order to ensure the imaging effect in the under-screen camera area, an organic light emitting diode (AMOLED) display panel adopts a transparent display design for the under-screen camera area. A traditional OLED display panel includes a normal display area, a light-transmissive display area, and a transition display area disposed between the normal display area and the light-transmissive display area. The driving circuits of the pixels in the light-transmissive display area and the signal traces connecting the driving circuits are arranged in the transition display area, so that the light-transmissive display area can have a high light transmittance while realizing display. Multiple arrays of pixels and corresponding driving circuits are arranged in the normal display area to realize display. However, in this design, since the driving circuits for driving the pixels in the light-transmissive display area and the pixels in the transition display area are concentrated together, forming pixel driving islands, there is a large difference in the metal density distribution between the pixel driving islands in the transition display area and the normal display area, resulting in a large difference in reflectivity between the pixel driving islands and the normal display area, which affects the display uniformity. Summary of the Invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problem that the reflectivity difference between the normal display area and the driving circuit islands of the existing OLED display panel is large, affecting the display uniformity of the OLED display panel.

[0004] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0005] Embodiments of the present invention provide a display panel, including a main display area, a light-transmissive display area, and a transition display area, where the transition display area is disposed between the main display area and the light-transmissive display area, and the display panel includes:

[0006] Multiple first pixels, located in the main display area;

[0007] Multiple second pixels, located in the light-transmissive display area and the transition display area;

[0008] Multiple first pixel driving circuits, located in the main display area and used to drive the multiple first display pixels, and the first pixel driving circuit includes a source electrode and a drain electrode;

[0009] Multiple second pixel driving circuits, located in the transition display area and forming multiple driving circuit islands for driving the multiple second pixels, and the second pixel driving circuit includes a source electrode and a drain electrode; and

[0010] The reflective member is disposed on the same layer as the source and drain electrodes of the first pixel driving circuit and the source and drain electrodes of the second pixel driving circuit. The reflective member includes a plurality of first reflective portions located on the driving circuit islands.

[0011] In some embodiments of the present invention, the reflective member further includes a plurality of second reflective portions located in the main display area. The proportion of the unit area of the second reflective portion is A, and the proportion of the unit area of the first reflective portion is B. The absolute value of the difference between A and B is less than or equal to 11.29%.

[0012] In some embodiments of the present invention, the percentage of the brightness difference between the transition display area and the main display area is less than 0.5%.

[0013] In some embodiments of the present invention, the transition display area includes a second sub-transition area. The second sub-transition area includes a driving circuit island area for arranging a plurality of the driving circuit islands and a non-driving circuit island area located between the driving circuit islands. Wherein, the reflective member includes a plurality of third reflective portions located in the non-driving circuit island area. The proportion of the unit area of the third reflective portion is C, and the absolute value of the difference between A and C is less than 2%.

[0014] In some embodiments of the present invention, the transition display area further includes a first sub-transition area. The first sub-transition area is disposed between the second sub-transition area and the transmissive display area. Wherein, the reflective member further includes a plurality of fourth reflective portions located in the first sub-transition area. The proportion of the unit area of the fourth reflective portion is D, and the absolute value of the difference between A and D is less than 2%.

[0015] In some embodiments of the present invention, the absolute value of the difference between C and D is less than 2%.

[0016] In some embodiments of the present invention, the boundary of the transmissive display area adjacent to the first sub-transition area is an arc-shaped boundary. The boundary of the first sub-transition area adjacent to the second sub-transition area includes two opposite first arc-shaped boundaries. The boundary of the second sub-transition area adjacent to the main display area includes two opposite second arc-shaped boundaries. The curvature of the first arc-shaped boundary is less than the curvature of the second arc-shaped boundary.

[0017] In some embodiments of the present invention, the patterns of the second reflective portions, the first reflective portions, the third reflective portions, and the fourth reflective portions are all the same or similar.

[0018] In some embodiments of the present invention, the plurality of second reflective portions are equally spaced, the plurality of first reflective portions are equally spaced, the plurality of third reflective portions are equally spaced, and the plurality of fourth reflective portions are equally spaced.

[0019] In some embodiments of the present invention, the shape of the first reflection portion, the shape of the second reflection portion, the shape of the third reflection portion, and the shape of the fourth reflection portion include at least one of a square, a rhombus, a circle, an ellipse, and a strip.

[0020] In some embodiments of the present invention, the display panel includes:

[0021] An active layer, including a semiconductor layer of the first pixel driving circuit and a semiconductor layer of the second pixel driving circuit;

[0022] A second metal layer, disposed on the active layer, including a gate of the first pixel driving circuit and a gate of the second pixel driving circuit; and

[0023] A first metal layer and the reflecting member, disposed on the second metal layer in the same layer, the first metal layer including a source and a drain of the first pixel driving circuit, and a source and a drain of the second pixel driving circuit.

[0024] In some embodiments of the present invention, the material of the reflecting member includes any one of a stacked ITO / Ag / ITO composite film layer, a stacked Ti / Al / Ti composite film layer, and a molybdenum metal layer.

[0025] An embodiment of the present invention further provides a display device, including the display panel and a photosensitive element in the above embodiments, and the photosensitive element is disposed corresponding to the transmissive display area of the display panel.

[0026] The beneficial effect of the present invention is that by providing a plurality of first reflection portions on the pixel driving circuit islands in the transition display area of the display panel, the reflectivity at the pixel driving circuit islands in the main display area and the transition display area can be made to tend to be consistent, thereby improving the display uniformity of the display panel. Description of the Drawings

[0027] Figure 1 A plan view of the display panel provided by an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of pixel arrangement at the junction of the transition display area and the main display area provided by an embodiment of the present invention;

[0029] Figure 3 A partial enlarged schematic diagram of the display panel provided by an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of the structure of the transition display area of the display panel provided by an embodiment of the present invention;

[0031] Figure 5 is Figure 3Schematic cross-sectional view at C-C;

[0032] Figure 6 Simulation display diagram before density optimization of the second reflection part and the first reflection part;

[0033] Figure 7 Simulation display diagram after density optimization of the second reflection part and the first reflection part. Specific implementation manners

[0034] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0035] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, and may also include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] Please refer to Figure 1 , an embodiment of the present invention provides a display panel 100, including a main display area 103, a light-transmitting display area 101 and a transition display area 102. The transition display area 102 is disposed between the light-transmitting display area 101 and the main display area 103. The main display area 103 is used for normal display, and the light-transmitting display area 101 has high transparency while realizing display, so that light can pass through. Therefore, the area of the main display area 103 is much larger than the area of the light-transmitting display area 101.

[0037] In the embodiment of the present invention, the shape of the light-transmitting display area 101 is circular. In other embodiments, the light-transmitting display area 101 may also be square, diamond-shaped, oval or other shapes. The transition display area 102 surrounds the light-transmitting display area 101, and the main display area 103 surrounds the transition display area 102. The shape of the transition display area 102 is annular, specifically a circular ring. In other embodiments, the transition display area may also be a square ring, an oval ring.

[0038] Please refer toFigure 2 , Figure 2 It is a schematic diagram of the pixel arrangement at the junction of the transition display area and the main display area. The display panel 100 includes a plurality of first pixels 11 and a plurality of second pixels 12. Among them, the first pixels 11 are located in the main display area 103, and the second pixels 12 are located in the transition display area 102 and the light-transmitting display area 101. Any one of the first pixels 11 includes a first red sub-pixel 11a, a first green sub-pixel 11b, and a first blue sub-pixel 11c, and any one of the second pixels 12 includes a second red sub-pixel 12a, a second green sub-pixel 12b, and a second blue sub-pixel 12c.

[0039] The main display area 103 is provided with a plurality of first pixel repeating units 103A, and the transition display area 102 and the light-transmitting display area 101 are provided with a plurality of second pixel repeating units 102C. In the same area, the number of the first pixel repeating units 103A included in the main display area 103 is equal to the number of the second pixel repeating units 102C included in the transition display area 102 and the light-transmitting display area 101, that is, the main display area 103, the transition display area 102, and the light-transmitting display area 101 have the same pixel density (Pixel Per Inch, PPI), which can reduce the overall display difference between the display screen of the main display area 103 and the display screens of the transition display area 102 and the light-transmitting display area 101.

[0040] The arrangement manners of the first pixel repeating unit 103A and the second pixel repeating unit 102C are the same, and the arrangement manners include the arrangement rules and arrangement distances of each sub-pixel. Both the first pixel repeating unit 103A and the second pixel repeating unit 102C adopt the pentile arrangement manner. Taking the first pixel repeating unit 103A as an example, the first pixel repeating unit 103A adopts a 4×4 matrix arrangement manner, the sub-pixels in adjacent rows are arranged in a staggered manner, and the sub-pixels in adjacent columns are arranged in a staggered manner. The first pixel repeating unit 103A includes two first red sub-pixels 11a, four first green sub-pixels 11b, and two first blue sub-pixels 11c. The first red sub-pixel 11a and the first blue sub-pixel 11c are located in the same row and are alternately distributed in sequence, and the first green sub-pixel 11b and the first red sub-pixel 11a, the first blue sub-pixel 11c are arranged in alternate rows.

[0041] Further, the display panel further includes a plurality of first pixel driving circuits for driving a plurality of the first pixels 11 to emit light, and a plurality of second pixel driving circuits for driving the second pixels 12 to emit light. The plurality of first pixel driving circuits are located in the main display area 103, and the plurality of second pixel driving circuits are located in the transition display area 102. In order to improve the light transmittance of the light-transmissive display area 101, the driving circuits for driving the pixels in the light-transmissive display area 101 are placed in the transition display area 102. Therefore, a part of the second pixel driving circuits in the transition display area 102 drive the pixels in the light-transmissive display area 101 to emit light, and a part of the second pixel driving circuits drive the pixels in the transition display area 102 to emit light. This results in a large difference in the metal density of the area where the driving circuits in the transition display area 102 are located and the metal density in the main display area 103, and further causes a circular ring to be displayed in the transition display area 102 when the display panel 100 displays a picture. Please refer to Figure 4 , in the embodiment of the present invention, by providing the reflecting members 13 in the main display area 103 and the transition display area 102, and controlling the density distribution of the reflecting members in the transition display area 102 and the main display area 103, the reflectivity of the transition display area 102 and the main display area 103 is made to tend to be consistent, so that the brightness of the overall display area tends to be consistent.

[0042] The opening area of each sub-pixel in the main display area 103 is larger than the opening area of the corresponding sub-pixels in the transition display area 102 and the light-transmissive display area 101. The opening area of the transition display area 102 is designed to be smaller, which can provide a larger accommodation space for the layout of the driving circuits.

[0043] Please refer to Figure 3 and Figure 4 , the plurality of second pixel driving circuits in the transition display area 102 are concentrated to form a plurality of driving circuit islands 1021. The reflecting member 13 includes a plurality of first reflecting portions 131 located on the driving circuit islands 1021 and a second reflecting portion 132 located in the main display area 103. The unit area ratio of the second reflecting portion 132 is A, and the unit area ratio of the first reflecting portion 131 is B. The inventor found that by adjusting the difference in the unit area ratio between the first reflecting portion 131 and the second reflecting portion 132, when the absolute value of the difference between A and B is less than or equal to 11.29%, the reflectivity difference between the driving circuit islands 1021 and the main display area 103 can be greatly reduced, so that the percentage of the brightness difference between the transition display area and the main display area is less than or equal to 0.5%. Under this brightness difference, a uniform display effect can be achieved. The calculation formula for the percentage of the brightness difference is: |(brightness of the main display area / brightness of the area where the driving circuit islands are located)-1|.

[0044] Please refer to Figure 3 andFigure 4 Furthermore, in the embodiments of the present invention, the transition display area 102 includes a first sub-transition area 102A and a second sub-transition area 102B. The first sub-transition area 102A is disposed between the second sub-transition area 102B and the light-transmissive display area 101, and the second sub-transition area 102B is disposed between the main display area 103 and the first sub-transition area 102A.

[0045] The second sub-transition area 102B further includes a driving circuit island area and a non-driving circuit island area. The driving circuit island area is used to place a plurality of the driving circuit islands 1021. The non-driving circuit island area is the area between the driving circuit islands 1021 of the second sub-transition area 102B. A first trace for connecting the second pixel driving circuit is disposed in the non-driving circuit island area. The first trace can be a scanning line or the like, and the first trace can be a straight line or a broken line or the like. A plurality of second traces 1022, such as data lines, VDD traces, etc., are provided in the first sub-transition area 102A for connecting the second pixel driving circuits in the same column.

[0046] One second pixel driving circuit can drive a plurality of sub-pixels with the same color in the transition display area 102 and the light-transmissive display area 101 to reduce the space occupied by the driving circuit islands 1021. For example, two second red sub-pixels 12a can be driven by the same second pixel driving circuit, four second green sub-pixels 12b can be driven by the same second pixel driving circuit, and two second blue sub-pixels 12c can be driven by the same second pixel driving circuit.

[0047] Compared with the second sub-transition area 102B, the first sub-transition area 102A is disposed closer to the main display area 103, which can avoid the second traces 1022 in the first sub-transition area 102A from having too long a winding length.

[0048] In the embodiments of the present invention, the boundary of the light-transmissive display area 101 close to the first sub-transition area 102A is an arc-shaped boundary, which can specifically be a circular arc-shaped boundary or an elliptical arc-shaped boundary; the boundary of the first sub-transition area 102A close to the second sub-transition area 102B includes two opposite first arc-shaped boundaries, and the boundary of the second sub-transition area 102B close to the main display area 103 includes two opposite second arc-shaped boundaries. The curvature of the first arc-shaped boundary is less than the curvature of the second arc-shaped boundary.

[0049] Please refer to Figure 4, a plurality of the second pixel driving circuits in the second sub-transition region 102B form a plurality of driving circuit islands 1021 for driving the plurality of second pixels 12. A plurality of second pixel driving circuits are provided on any one of the driving circuit islands 1021. The plurality of driving circuit islands 1021 surround the first sub-transition region 102A, and the shape of the driving circuit island 1021 can be strip-shaped. The plurality of driving circuit islands 1021 include a first group of driving circuit islands 1021A and a second group of driving circuit islands 1021B. Each second trace 1022 is correspondingly connected to one driving circuit island 1021 in the first group of driving circuit islands 1021A and one driving circuit island 1021 in the second group of driving circuit islands 1021B.

[0050] Further, the first group of driving circuit islands 1021A and the second group of driving circuit islands 1021B are symmetric about the axis of symmetry AA, the first group of driving circuit islands 1021A is symmetric about the axis of symmetry BB, and the second group of driving circuit islands 1021B is symmetric about the axis of symmetry BB.

[0051] Please refer to Figure 4 , the reflecting member 13 includes a plurality of second reflecting portions 132, a plurality of first reflecting portions 131, a plurality of third reflecting portions 133, and a plurality of fourth reflecting portions 134. The plurality of second reflecting portions 132 are located in the main display area 103, the plurality of first reflecting portions 131 are located on the plurality of driving circuit islands 1021, the plurality of third reflecting portions 133 are located in the non-driving island area between the plurality of driving circuit islands 1021, and the fourth reflecting portion 134 is located in the first sub-transition region 102A. By setting reflecting portions in different regions and adjusting the ratio difference of the reflecting portions in each region, the overall reflectivity of different regions can be made to tend to be consistent, achieving the effect of no obvious demarcation during display.

[0052] In some embodiments of the present invention, the unit area ratio of the second reflecting portion 132 is A, the unit area ratio of the first reflecting portion 131 is B, and the difference between A and B is greater than 0 and less than or equal to 11.29%. Within this value range, the percentage of the brightness difference between the driving circuit island area and the main display area can be made less than 0.5%, so that there is no obvious demarcation phenomenon between the transition display area 102 and the main display area 103 during display.

[0053] Further, the unit area ratio of the third reflecting portion 133, the unit area ratio of the fourth reflecting portion 134, and the unit area ratio of the second reflecting portion 132 are kept as close as possible or even equal, so that the brightnesses of the first sub-transition region 102A, the second sub-transition region 102B, and the main display area 103 tend to be consistent, thereby improving the display effect.

[0054] Specifically, the proportion of the unit area of the third reflection part is C, and the absolute value of the difference between A and C is less than 2%; the proportion of the unit area of the fourth reflection part is D, and the absolute value of the difference between A and D is less than 2%; the proportion of the unit area of the third reflection part is C, and the absolute value of the difference between C and D is less than 2%. Within this range, the percentage of the brightness difference between the non-driving island area, the first sub-transition area, the light-transmitting display area and the main display area can be made less than 0.5%. The formula for the percentage of the brightness difference is the same as the formula mentioned above: |(brightness of the main display area / brightness of the CUP area) - 1|, and the CUP area refers to any one of the non-driving island area, the first sub-transition area, and the light-transmitting display area.

[0055] In this embodiment, the area mentioned refers to the orthographic projection area of each component on the substrate, and the proportion of the unit area mentioned refers to the ratio of the area of the reflection part in a pixel repeating unit area to the area of a pixel repeating unit. For example, the proportion of the unit area of the second reflection part 132 is equal to the ratio of the area of the second reflection part 132 in the area of a first pixel repeating unit 103A to the area of a first pixel repeating unit 103A, and the proportion of the unit area of the first reflection part 131 is equal to the ratio of the area of the first reflection part 131 in the area of a second pixel repeating unit 102C to the area of a second pixel repeating unit 102C. Please refer to Figure 2 , the area proportion of the pixel repeating unit can be calculated by the area occupied by the closed area formed by the sequential connection of the center points of the sub-pixels on the periphery of a pixel repeating unit, and the area occupied by the first pixel repeating unit 103A is the same as the area occupied by the second pixel repeating unit 102C.

[0056] In some embodiments of the present invention, the patterns of the second reflection part 132, the first reflection part 131, the third reflection part 133, and the fourth reflection part 134 are all the same or similar. Designing the patterns of each reflection part to be similar can enable them to be formed by the same array process when each reflection part is fabricated on the same layer. "Similar" patterns mean that when there are slight differences in the patterns, it does not affect the reflectivity of the patterns.

[0057] Multiple second reflection parts 132 are equally spaced, multiple first reflection parts 131 are equally spaced, multiple third reflection parts 133 are equally spaced, and multiple fourth reflection parts 134 are equally spaced.

[0058] The display panel 100 in the embodiments of the present invention can be an OLED display panel. In other embodiments, the display panel can also be a Micro-LED display panel, a Mini-LED display panel, etc.

[0059] Please refer toFigure 5 , Figure 5 is Figure 3 a schematic diagram of the C-C cross-section in

[0060] . The reflector 13 is disposed between the first pixel 11 and the first pixel driving circuit 14 and between the second pixel 12 and the second pixel driving circuit 15. At least a part of the second reflection portion 132 is electrically connected to the first pixel driving circuit 14 and the first pixel 11, serving as a bridging wire. At least a part of the first reflection portion 131 is electrically connected to the second pixel driving circuit 15 and the second pixel 12, serving as a bridging wire. That is, while the reflector 13 adjusts the reflectivity of each region, it can also connect and electrically bridge other film layers.

[0061] Please refer to Figure 5 . The first pixel driving circuit 14 and the second pixel driving circuit 15 include a first metal layer 140. The first metal layer 140 includes the source and drain of the first pixel driving circuit 14 and the source and drain of the second pixel driving circuit 15. The first pixel 11 and the second pixel 12 include an anode layer disposed on the first metal layer 140. The anode layer includes a first anode 111 and a second anode 121. Among them, the reflector 13 is disposed between the anode layer and the first metal layer 140. A part of the second reflection portion 132 of the reflector 13 is electrically connected to the source or drain of the first pixel driving circuit 14 and the first anode 111. A part of the first reflection portion 131 of the reflector 13 is electrically connected to the source or drain of the second pixel driving circuit 15 and the second anode 121.

[0062] Specifically, please refer to Figure 5, the display panel 100 includes a substrate 10, an active layer 110 disposed on one side of the substrate 10, a second metal layer 120 disposed on the side of the active layer 110 facing away from the substrate 10, a third metal layer 130 disposed on the side of the second metal layer 120 facing away from the active layer 110, a first metal layer 140 disposed on the side of the third metal layer 130 facing away from the second metal layer 120, a first planarization layer 70 disposed on the side of the first metal layer 140 facing away from the third metal layer 130, a reflector 13 disposed on the side of the first planarization layer 70 facing away from the first metal layer 140, a second planarization layer 80 disposed on the side of the reflector 13 facing away from the first planarization layer 70, a light-emitting device layer disposed on the side of the second planarization layer 80 facing away from the reflector 13, and a pixel definition layer 90 disposed on the side of the second planarization layer 80 facing away from the reflector 13.

[0063] In addition, a stacked barrier layer 20 and buffer layer 30 may be disposed between the active layer 110 and the substrate 10. The buffer layer 30 is disposed on the side of the barrier layer 20 facing away from the substrate 10. A first insulating layer 40 is disposed between the second metal layer 120 and the active layer 110. A second insulating layer 50 is disposed between the third metal layer 130 and the second metal layer 120. A third insulating layer 60 is disposed between the first metal layer 140 and the third metal layer 130.

[0064] In the above embodiment, the reflector 13 is disposed between the pixel driving circuit (the first pixel driving circuit 14, the second pixel driving circuit 15) film layer and the light-emitting device layer (the first pixel 11, the second pixel 12). In other embodiments, the reflector 13 may be disposed on the same layer as the first metal layer 140, and the reflector 13 may also be disposed on the same layer as the anode of the light-emitting device layer. The reflector 13 may also be stacked in different film layers, with a part disposed in one film layer and another part disposed in another film layer.

[0065] In an embodiment of the present invention, the first pixel driving circuit 14 may be a 7T1C architecture, that is, it includes seven thin film transistors with different functions and a storage capacitor. The second pixel driving circuit 15 may be a 7T1C architecture or a 2T1C structure. The thin film transistors of the pixel driving circuit mentioned in the embodiments of the present invention may be low-temperature polycrystalline silicon thin film transistors, and may also be amorphous silicon thin film transistors or metal oxide thin film transistors in other embodiments.

[0066] The active layer 110 is a patterned low-temperature polysilicon layer for forming the semiconductor layer of each thin-film transistor. The second metal layer 120 is a patterned metal for forming the gates of the thin-film transistors of the first pixel driving circuit 14, the gates of the thin-film transistors of the second pixel driving circuit 15, and other signal lines, such as scan lines. The third metal layer 130 is a patterned metal for at least forming the electrode plates of the capacitors of the first pixel driving circuit 14 and the electrode plates of the capacitors of the second pixel driving circuit 15. The first metal layer 140 is a patterned metal for at least forming the source and drain of the first pixel driving circuit 14 and the source and drain of the second pixel driving circuit 15, and is also used for forming other signal traces, such as data lines, power signal lines, etc.

[0067] The light-emitting device layer can be an organic light-emitting diode device for forming each sub-pixel. The light-emitting device layer includes an anode layer, a light-emitting material functional layer, and a cathode stacked in sequence. The anode layer is a patterned structure including a first anode 111 and a second anode 121 located in the main display area 103. The second anode 121 extends from the light-transmissive display area 101 to the second sub-transition area 102B to be electrically connected to the corresponding second pixel driving circuit 15 in the second sub-transition area 102B.

[0068] Part of the second reflection portion 132 of the reflector 13 is electrically connected to the first anode 111 of the light-emitting device layer and the source or drain of the first pixel driving circuit 14 through corresponding vias to realize the electrical connection between the first pixel driving circuit 14 and the first pixel 11. Part of the first reflection portion 131 of the reflector 13 is electrically connected to the second anode 121 of the light-emitting device layer and the source or drain of the second pixel driving circuit 15 through corresponding vias to realize the electrical connection between the second pixel driving circuit 15 and the second pixel 12.

[0069] Please refer to Figure 6 , Figure 6 is an analog display diagram before the density optimization of the second reflection portion and the first reflection portion. Before optimization, each data is as follows: the unit area ratio of the second reflection portion 132 located in the main display area 103 is 55.49%, the unit area ratio of the first reflection portion 131 of the driving circuit island area located in the second sub-transition area 102B is 36.99%, the unit area ratio of the third reflection portion 133 of the non-driving island area located in the second sub-transition area 102B is 36.99%, and the unit area ratio of the fourth reflection portion 134 located in the first sub-transition area 102A is 36.99%. It can be seen from Figure 6 that the circular ring phenomenon between the first sub-transition area 102A, the second sub-transition area 102B and the main display area 103 is relatively serious, and the display of the transition display area 102 is abnormal.

[0070] Please refer to Figure 7 , Figure 7 which is the simulation display diagram after the density optimization of the second reflection part and the first reflection part. After optimization, the respective data are as follows: the unit area ratio of the second reflection part 132 located in the main display area 103 is 54.78%, the unit area ratio of the first reflection part 131 in the driving circuit island area of the second sub-transition area 102B is 43.49%, the unit area ratio of the third reflection part 133 in the non-driving circuit island area of the second sub-transition area 102B is 54.78%, the unit area ratio of the fourth reflection part 134 in the first sub-transition area 102A is 54.78%, and in the experiments of the above data, the percentage of the brightness difference before and after in each area measured by the inventor is within 5%, and the display brightness of the transition display area 102 and the main display area tends to be consistent. After conducting Figure 5 and Figure 4 except for the different unit area ratios of each reflection part, the other structures, experimental conditions, and measuring instruments during the experimental demonstration process of the display panel are the same. The influence of commercially available precision instruments on brightness measurement is small, so the influence of different types of precision instruments can be ignored. The above two experiments are both displayed under 255 gray scale conditions.

[0071] The embodiment of the present application further provides a display device, including the display panel 100 and a photosensitive element in the above embodiment. The photosensitive element is correspondingly arranged with the light-transmitting display area 101 of the display panel 100, and the light-transmitting element can be arranged on the side of the substrate 10 away from the light-emitting device layer. The photosensitive element can be a camera or other photosensitive elements that need to be built into the display area.

[0072] By arranging a plurality of first reflection parts at least on the pixel driving circuit islands in the transition display area and arranging a plurality of second reflection parts on the main display area of the display panel, the reflectivity of the main display area and the driving circuit island area can be made to tend to be consistent, thereby improving the display uniformity of the display panel.

[0073] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] The above has introduced in detail a display panel and a display device provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, comprising a main display area, a light-transmissive display area and a transition display area, wherein the transition display area is disposed between the main display area and the light-transmissive display area, and is characterized in that, The display panel includes: A plurality of first pixels located in the main display area; A plurality of second pixels located in the transmissive display area and the transition display area; A plurality of first pixel driving circuits located in the main display area and configured to drive the plurality of first pixels, the first pixel driving circuit including a source electrode and a drain electrode; A plurality of second pixel driving circuits located in the transition display area and forming a plurality of driving circuit islands for driving the plurality of second pixels, the second pixel driving circuit including a source electrode and a drain electrode; and A reflector, which is disposed on the same layer as the source electrode and the drain electrode of the first pixel driving circuit, and the source electrode and the drain electrode of the second pixel driving circuit, the reflector including a plurality of first reflection portions located on the driving circuit islands; The reflector further includes a plurality of second reflection portions located in the main display area, the unit area ratio of the second reflection portions is A, the unit area ratio of the first reflection portions is B, and the difference between A and B is less than or equal to 11.29%.

2. The display panel according to claim 1, characterized in that, The percentage of the brightness difference between the transition display area and the main display area is less than 0.5%.

3. The display panel according to claim 1, wherein The reflector further includes a plurality of second reflection portions located in the main display area, the unit area ratio of the second reflection portions is A; The transition display area includes a second sub-transition area, the second sub-transition area includes a driving circuit island area for arranging the plurality of driving circuit islands, and a non-driving circuit island area located between the driving circuit islands; wherein, The reflector further includes a plurality of third reflection portions located in the non-driving circuit island area, the unit area ratio of the third reflection portions is C, and the absolute value of the difference between A and C is less than 2%.

4. The display panel according to claim 3, wherein The transition display area further includes a first sub-transition area, the first sub-transition area is disposed between the second sub-transition area and the transmissive display area; wherein, The reflector further includes a plurality of fourth reflection portions located in the first sub-transition area, the unit area ratio of the fourth reflection portions is D, and the absolute value of the difference between A and D is less than 2%.

5. The display panel according to claim 4, characterized in that, The absolute value of the difference between C and D is less than 2%.

6. The display panel according to claim 4, wherein, The boundary of the transmissive display area close to the first sub-transition area is an arc-shaped boundary, the boundary of the first sub-transition area close to the second sub-transition area includes two opposite first arc-shaped boundaries, the boundary of the second sub-transition area close to the main display area includes two opposite second arc-shaped boundaries, and the curvature of the first arc-shaped boundary is less than the curvature of the second arc-shaped boundary.

7. The display panel according to claim 4, characterized in that, The patterns of the second reflection portions, the first reflection portions, the third reflection portions, and the fourth reflection portions are all the same or similar.

8. The display panel according to claim 4, wherein The plurality of second reflection portions are equally spaced, the plurality of first reflection portions are equally spaced, the plurality of third reflection portions are equally spaced, and the plurality of fourth reflection portions are equally spaced.

9. The display panel according to claim 4, wherein The shapes of the first reflection portion, the second reflection portion, the third reflection portion, and the fourth reflection portion include at least one of a square, a rhombus, a circle, an ellipse, and a strip.

10. The display panel according to claim 1, wherein, The display panel includes: The active layer includes the semiconductor layer of the first pixel driving circuit and the semiconductor layer of the second pixel driving circuit; The second metal layer is disposed on the active layer and includes the gate of the first pixel driving circuit and the gate of the second pixel driving circuit; and The first metal layer and the reflector are disposed on the second metal layer in the same layer. The first metal layer includes the source and drain of the first pixel driving circuit and the source and drain of the second pixel driving circuit.

11. The display panel according to claim 1, characterized in that, The material of the reflector includes any one of a stacked ITO / Ag / ITO composite film layer, a stacked Ti / Al / Ti composite film layer, and a molybdenum metal layer.

12. A display device, characterized in that, It includes the display panel and the photosensitive element according to any one of claims 1 to 11, and the photosensitive element is disposed corresponding to the light-transmitting display area of the display panel.

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