Display panel

Abstract

The application discloses a display panel, which can balance the transmittance and display contrast of a light-transmitting display area. The display panel has a light-transmitting display area. The display panel comprises a driving substrate, a pixel definition layer and a light-emitting device layer. The pixel definition layer is located on one side of the driving substrate, and a plurality of first pixel openings and a plurality of spaced first light-shielding pixel definition portions are arranged in the light-transmitting display area. The light-emitting device layer comprises a plurality of light-emitting pixels, and at least one light-emitting pixel is located in a corresponding first pixel opening.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel. Background Technology

[0002] With the widespread adoption of full-screen display devices, under-display camera (CUP) technology has emerged as a key path to achieving true full-screen displays. This technology places the image acquisition device (such as a camera) beneath the display panel. During normal display, the CUP area serves as part of the display area, while during image capture, it must maintain sufficient light transmittance for the camera to capture the image. Furthermore, to improve the contrast of the CUP area, a light-blocking structure is typically introduced. However, the introduction of this light-blocking structure reduces the light transmittance through the CUP area, thus affecting the camera's imaging performance. Summary of the Invention

[0003] This application provides a display panel to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a display panel is provided, having a light-transmitting display area. The display panel includes a driving substrate, a pixel definition layer, and a light-emitting device layer. The pixel definition layer is located on one side of the driving substrate, and has a plurality of first pixel openings and a plurality of spaced first light-shielding pixel definition portions in the light-transmitting display area. One first light-shielding pixel definition portion is disposed around a corresponding at least portion of the first pixel opening. The light-emitting device layer includes a plurality of light-emitting pixels; at least one of the light-emitting pixels is located in a corresponding first pixel opening.

[0005] In the display panel of this application embodiment, the pixel definition layer has a plurality of first pixel openings and includes a plurality of spaced first light-shielding pixel definition portions in the light-transmitting display area. This arrangement, by forming a plurality of spaced first light-shielding pixel definition portions, allows more light to pass through the gaps between adjacent first light-shielding pixel definition portions, thereby improving the light transmittance of the light-transmitting display area. Simultaneously, the first light-shielding pixel definition portions absorb ambient light incident on the light-transmitting display area, thereby improving the contrast of the light-transmitting display area during display. In other words, the plurality of spaced first light-shielding pixel definition portions are located in the light-transmitting display area, simultaneously considering both the transmittance and display contrast of the light-transmitting display area. Attached Figure Description

[0006] Figure 1 This is a cross-sectional structural diagram of a display panel provided in an exemplary embodiment of this application; Figure 2 This is a partial cross-sectional structural diagram of the light-transmitting display area of ​​the display panel provided in an exemplary embodiment of this application; Figure 3 This is a schematic diagram of a partial planar structure of the pixel definition layer in the light-transmitting display area of ​​the display panel provided in an exemplary embodiment of this application; Figure 4 This is another partial cross-sectional structural diagram of the light-transmitting display area of ​​the display panel provided in the exemplary embodiment of this application; Figure 5 This is another partial cross-sectional structural diagram of the light-transmitting display area of ​​the display panel provided in the exemplary embodiments of this application; Figure 6 This is another partial cross-sectional structural diagram of the light-transmitting display area of ​​the display panel provided in the exemplary embodiments of this application; Figure 7 This is a partial cross-sectional structural diagram of the display area of ​​the display panel provided in an exemplary embodiment of this application; Figure 8 This is a schematic diagram of a partial planar structure of the pixel definition layer in the display area of ​​the display panel provided in an exemplary embodiment of this application.

[0007] Explanation of reference numerals in the attached figures: 100. Display panel; AA1. Transmitting display area; AA2. Display area; 200. Optical devices; 11. Driving substrate; 111. Substrate; 112. Driving circuit layer; 12. Light-emitting device layer; 121, emitting pixel; 121A1, first emitting pixel; 121A2, second emitting pixel; 122, anode layer; 122A, anode; 123. Cathode layer; 124. Shared light-emitting layer; 13. Thin-film encapsulation layer; 141. Color filter layer; 142. Filter unit; 143. Black matrix layer; 15. Pixel definition layer; 151. First pixel opening; 152. First light-shielding pixel definition section; 153. Light-transmitting pixel definition section; 154. Second pixel opening; 155. Second light-shielding pixel definition section; 161. First groove; 162. Second groove; 17. Transmitting and conductive parts. Detailed Implementation

[0008] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0009] Please see Figure 1 This application provides a display panel 100. The display panel 100 has a light-transmitting display area AA1, and an optical device 200 can be disposed below the display panel 100, overlapping with the light-transmitting display area AA1. The optical device 200 may include a light emitting device, and the light emitted by the light emitting device can pass through the light-transmitting display area AA1 of the display panel 100. The optical device 200 may also include a light collecting device, and the light collecting device receives the light passing through the display panel 100. In one example, the optical device 200 includes an image collecting device.

[0010] In some embodiments, please refer to Figure 1 The display panel 100 may also have a display area AA2, which is mainly used for display and does not need to transmit light. The light transmittance of the display area AA2 is less than that of the light-transmitting display area AA1. The light-transmitting display area AA1 may be embedded in the display area AA2 or may be arranged adjacent to the display area AA2.

[0011] In some embodiments, please refer to Figure 1 The display panel 100 includes a driving substrate 11 and a light-emitting device layer 12. The driving substrate 11 includes a substrate 111 and a driving circuit layer 112, the driving circuit layer 112 being located on the substrate 111 and including multiple pixel driving circuits. The light-emitting device layer 12 is located on one side of the driving substrate 11 and includes multiple light-emitting pixels 121. Each light-emitting pixel 121 may include at least one of an organic light-emitting layer, a quantum dot light-emitting layer, and an inorganic light-emitting layer. In one example, the light-emitting pixel 121 may include an organic light-emitting layer.

[0012] In some embodiments, please refer to Figure 1 The light-emitting device layer 12 also includes an anode layer 122 and a cathode layer 123, with a plurality of light-emitting pixels 121 located between the anode layer 122 and the cathode layer 123. The anode layer 122 includes a plurality of anodes 122A spaced apart.

[0013] In some embodiments, please refer to Figure 1Each light-emitting pixel 121 may include a first light-emitting pixel 121A1 and a second light-emitting pixel 121A2, with the second light-emitting pixel 121A2 located on the side of the first light-emitting pixel 121A1 facing away from the driving substrate 11. With this configuration, the display panel 100 employs a light-emitting stack of at least two light-emitting pixels 121 connected in series, thereby improving the brightness of the display panel 100 and extending its lifespan.

[0014] Please see Figure 1 When a light-emitting pixel 121 includes a first light-emitting pixel 121A1 and a second light-emitting pixel 121A2, the display panel 100 may further include a light-emitting shared layer 124, which is shared by multiple light-emitting pixels 121 in the display area AA2 and the light-transmitting display area AA1. The light-emitting shared layer 124 may include at least one of a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, and a charge generation layer. In one example, the light-emitting common layer 124 includes a first hole injection layer (HIL) (not shown in the figure), a first hole transport layer (HTL) (not shown in the figure), a first electron transport layer (ETL) (not shown in the figure), a charge generation layer (CGL) (not shown in the figure), a second hole injection layer (not shown in the figure), a second hole transport layer (not shown in the figure), and a second electron transport layer (not shown in the figure). The first hole injection layer, the first hole transport layer, the first light-emitting pixel 121A1, the first electron transport layer, the charge generation layer, the second hole injection layer, the second hole transport layer, the second light-emitting pixel 121A2, and the second electron transport layer are sequentially stacked on the corresponding anode 122A.

[0015] In some embodiments, please refer to Figure 1 When the light-emitting device includes an organic light-emitting diode, the display panel 100 may also include a thin-film encapsulation layer 13. The thin-film encapsulation layer 13 is located on the side of the light-emitting device layer 12 away from the driving substrate 11, and includes an inorganic encapsulation layer and an organic encapsulation layer.

[0016] In some embodiments, please refer to Figure 1The display panel 100 may further include a color filter layer 141 and a black matrix layer 143. The color filter layer 141 and the black matrix layer 143 are located on the side of the light-emitting device layer 12 and the thin-film encapsulation layer 13 facing away from the substrate 111. The color filter layer 141 may include multiple filter units 142 of different colors. Each color filter unit 142 can transmit light of its corresponding color while absorbing light of other colors. Multiple filter units 142 of different colors are embedded in the black matrix layer 143. In this way, the black matrix layer 143 and the color filter layer 141 absorb ambient light incident on the surface and interior of the display panel 100, thereby improving the contrast of the display panel 100 during display.

[0017] In one example, when the light-emitting device layer 12 includes a red light-emitting device, a blue light-emitting device, and a green light-emitting device, the color filter layer 141 may include a red filter unit, a blue filter unit, and a green filter unit. The red filter unit overlaps with the red light-emitting device, the blue filter unit overlaps with the blue light-emitting device, and the green filter unit overlaps with the green light-emitting device.

[0018] In some embodiments, please refer to Figures 2 to 6 The display panel 100 includes a pixel definition layer 15. The pixel definition layer 15 is located on one side of the driving substrate 11. An anode layer 122 is located between the pixel definition layer 15 and the driving substrate 11. A cathode layer 123 covers the surface of the pixel definition layer 15 facing away from the driving substrate 11. The pixel definition layer 15 has a plurality of first pixel openings 151 in the light-transmitting display area AA1 and includes a plurality of spaced first light-shielding pixel definition portions 152. The first pixel openings 151 expose the corresponding anodes 122A, and the first light-shielding pixel definition portions 152 cover the edges of the corresponding anodes 122A. At least one light-emitting pixel 121 is located in the corresponding first pixel opening 151. With this configuration, multiple spaced first light-shielding pixel defining portions 152 are formed in the light-transmitting display area AA1, allowing more light to pass through the gaps between adjacent first light-shielding pixel defining portions 152. This improves the light transmittance of the light-transmitting display area AA1. Simultaneously, the first light-shielding pixel defining portions 152 absorb ambient light incident on the light-transmitting display area AA1, suppressing ambient light reflection and thus enhancing the contrast of the light-transmitting display area AA1 during display. In other words, the multiple spaced first light-shielding pixel defining portions 152 located in the light-transmitting display area AA1 simultaneously balance the transmittance and display contrast of the light-transmitting display area AA1.

[0019] In some embodiments, a plurality of first light-shielding pixel definition portions 152 can be obtained by exposing and developing a whole surface of black negative photoresist.

[0020] In some embodiments, the first light-shielding pixel definition portion 152 may include an organic material and a black material dispersed in the organic material. The black material includes, but is not limited to, carbon black.

[0021] In some embodiments, please refer to Figure 3 A first light-shielding pixel defining portion 152 surrounds the corresponding first pixel opening 151, that is, the first light-shielding pixel defining portion 152 is ring-shaped. This configuration improves the problem of crosstalk between different light rays emitted by the light-emitting pixels 121 in different first pixel openings 151. Furthermore, the first light-shielding pixel defining portion 152 surrounds the corresponding first pixel opening 151, making the space occupied by the first light-shielding pixel defining portion 152 adjacent to the space occupied by the light-emitting pixels 121, allowing more light to pass through the area between the light-emitting pixels 121, thus increasing the transmittance of light through the light-transmitting display area AA1. In some embodiments, please refer to Figures 2 to 6 The first light-shielding pixel defining part 152 is provided with a first pixel opening 151, and the light-emitting pixel 121 is in contact with the side wall of the first light-shielding pixel defining part 152.

[0022] In some embodiments, the first light-shielding pixel definition portion 152 may also be disposed around a portion of the first pixel opening 151, or the first light-shielding pixel definition portion 152 may be disposed at a distance from the first pixel opening 151.

[0023] In some embodiments, the width of the orthographic projection of the first light-shielding pixel definition portion 152 onto the substrate 111 is greater than the distance between adjacent first light-shielding pixel definition portions 152. In some embodiments, when the first light-shielding pixel definition portion 152 is annular, the width of the orthographic projection of the first light-shielding pixel definition portion 152 onto the substrate 111 is greater than or equal to 5 micrometers.

[0024] In some embodiments, please refer to Figures 3 to 6 The pixel definition layer 15 also includes a light-transmitting pixel definition portion 153, which is located between adjacent first light-shielding pixel definition portions 152. This arrangement allows the light-transmitting pixel definition portion 153 to fill the gap between adjacent first light-shielding pixel definition portions 152, thereby protecting other structures in the area between adjacent first light-shielding pixel definition portions 152 and improving the reliability of the display panel 100. Furthermore, since light can pass through the light-transmitting pixel definition portion 153, the high light transmittance requirement of the light-transmitting display area AA1 is met.

[0025] In some embodiments, the light-transmitting pixel definition portion 153 may be transparent. In some embodiments, the light-transmitting pixel definition portion 153 may be made of the same material as the first light-shielding pixel definition portion 152, for example, both may be made of the same negative photoresist material.

[0026] In some embodiments, please refer to Figures 2 to 6 When the light-emitting device layer 12 also includes a light-emitting common layer 124, the display panel 100 further includes a first recess 161. The first recess 161 is disposed in at least one of the first light-shielding pixel defining portion 152 and the light-transmitting pixel defining portion 153. The light-emitting common layer 124 covers the pixel defining layer 15 and is located in the first recess 161. Thus, the first recess 161 increases the overall length of the light-emitting common layer 124, extending the path of lateral leakage generated by the light-emitting common layer 124 from one light-emitting pixel 121 to another in the light-transmitting display area AA1, thereby improving the lateral leakage problem generated by the light-emitting common layer 124 in the light-transmitting display area AA1 and mitigating display abnormalities caused by lateral leakage in the light-transmitting display area AA1. Furthermore, since the first recess 161 is disposed in at least one of the first light-shielding pixel defining portion 152 and the light-transmitting pixel defining portion 153, the space of the light-transmitting display area AA1 can be fully utilized when the space of the light-transmitting display area AA1 is limited.

[0027] In some embodiments, please refer to Figures 2 to 6 The first groove 161 is arranged around the first pixel opening 151, that is, the first groove 161 is also annular, so that the first groove 161 can extend the overall length of the light-emitting common layer 124 in all directions parallel to the plane of the substrate 111, thereby improving the lateral leakage problem of the light-emitting common layer 124 in all directions.

[0028] In some embodiments, please refer to Figures 2 to 4 The first groove 161 is disposed in the first light-shielding pixel definition portion 152. With this configuration, the first groove 161 is disposed closer to the first pixel opening 151, which improves the lateral leakage problem caused by the light-emitting common layer 124 at the position close to the first pixel opening 151.

[0029] In some embodiments, please refer to Figure 5 At least one first groove 161 is disposed in the first light-shielding pixel defining portion 152 and the light-transmitting pixel defining portion 153. With this arrangement, the space for the first groove 161 can be larger, reducing the difficulty of forming the first groove 161.

[0030] In some embodiments, please refer to Figure 5 When a first groove 161 is disposed in the first light-shielding pixel definition portion 152 and the light-transmitting pixel definition portion 153, the volume of the first groove 161 in the first part of the first light-shielding pixel definition portion 152 can be greater than the volume of the first groove 161 in the second part of the light-transmitting pixel definition portion 153.

[0031] In some embodiments, please continue reading Figure 5When the first groove 161 is disposed in the first light-shielding pixel defining portion 152 and the light-transmitting pixel defining portion 153, the first groove 161 includes a first groove bottom, at least a portion of which is inclined relative to the plane on which the driving substrate 11 is located. Because the edges of the first light-shielding pixel defining portion 152 are thinner than the center due to the downward flow of the developing solution during the formation of the first light-shielding pixel defining portion 152 by exposure and development, and because the developing rate of the developing solution on the first light-shielding pixel defining portion 152 is greater than that on the light-transmitting pixel defining portion 153 during the formation of the first groove 161, the first groove 161 is formed faster in the first light-shielding pixel defining portion 152 and slower in the light-transmitting pixel defining portion 153. This results in the first groove 161 occupying a larger space in the first light-shielding pixel defining portion 152 than in the light-transmitting pixel defining portion 153, and also causes at least a portion of the first groove bottom to be inclined relative to the plane on which the driving substrate 11 is located.

[0032] In some embodiments, please refer to Figure 5 In the direction from the light-transmitting pixel definition portion 153 to the first light-shielding pixel definition portion 152, the distance from the bottom of the first groove to the substrate 111 increases.

[0033] In some embodiments, please refer to Figure 6 The first groove 161 is disposed in the light-transmitting pixel definition part 153. With this arrangement, the distance between the first groove 161 and the first pixel opening 151 is greater, and the risk of the first groove 161 causing damage to conductive structures such as the anode 122A below the first pixel opening 151 is reduced.

[0034] In some embodiments, both the first light-shielding pixel definition portion 152 and the light-transmitting pixel definition portion 153 may be provided with a first groove 161.

[0035] Please see Figure 2 , Figure 4 as well as Figure 6 When the first groove 161 is disposed in the light-transmitting pixel definition portion 153 or the first light-shielding pixel definition portion 152, at least a portion of the first groove bottom of the first groove 161 is parallel to the plane where the driving substrate 11 is located, making the shape of the first groove 161 more controllable.

[0036] In some embodiments, please refer to Figure 2 , Figure 4 , Figure 5 as well as Figure 6 A portion of the first light-shielding pixel definition portion 152 is located between the first groove 161 and the driving substrate 11. This arrangement prevents the first groove 161 from completely penetrating the first light-shielding pixel definition portion 152, reducing the risk of damage to the underlying structure during the formation of the first groove 161.

[0037] In some embodiments, please refer to Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The first light-shielding pixel definition portion 152 contacts the edge of the anode 122A, and the orthographic projection of the first groove bottom of the first groove 161 on the substrate 111 is spaced apart from the orthographic projection of the anode 122A on the substrate 111. This arrangement reduces the risk of the first groove 161 exposing the anode 122A and the solution forming the first groove 161 damaging the anode 122A.

[0038] In some embodiments, the distance between the orthographic projection of the first groove bottom of the first groove 161 onto the substrate 111 and the orthographic projection of the anode 122A onto the substrate 111 can be greater than or equal to 0.1 micrometers.

[0039] In some embodiments, please refer to Figure 4 , Figure 5 as well as Figure 6 The display panel 100 also includes a light-transmitting conductive portion 17, which is located between the anode 122A of the light-transmitting display area AA1 and the driving substrate 11, and is in contact with the anode 122A and the first light-shielding pixel defining portion 152. Thus, the light-transmitting conductive portion 17 can connect different anodes 122A in the light-transmitting display area AA1, allowing one pixel driving circuit to drive multiple light-emitting pixels 121 without affecting the transmittance of the light-transmitting display area AA1. The orthographic projection of the first groove bottom of the first groove 161 onto the substrate 111 is spaced apart from the orthographic projection of the light-transmitting conductive portion 17 onto the substrate 111, reducing the risk of damage to the light-transmitting conductive portion 17 during the formation of the first groove 161. In some embodiments, the light-transmitting conductive portion 17 may include a light-transmitting conductive material such as indium tin oxide.

[0040] In some embodiments, the distance d between the orthographic projection of the first groove bottom of the first groove 161 onto the substrate 111 and the orthographic projection of the light-transmitting conductive portion 17 onto the substrate 111 is greater than or equal to 0.1 micrometers. The distance d between the orthographic projection of the first groove bottom of the first groove 161 onto the substrate 111 and the orthographic projection of the light-transmitting conductive portion 17 onto the substrate 111 is less than or equal to 1.5 micrometers.

[0041] In some embodiments, please refer to Figure 2 , Figure 4 , Figure 5 as well as Figure 6 The first light-shielding pixel defining portion 152 includes a light-shielding side surface, which includes an arcuate surface. Because the side surface of the edge of the first light-shielding pixel defining portion 152 is an arcuate surface due to the influence of the flow of the developer when the first light-shielding pixel defining portion 152 is formed by exposure and development, the light-shielding side surface includes an arcuate surface.

[0042] In some embodiments, the light-shielding side contacts the light-transmitting pixel definition portion 153 and protrudes toward the light-transmitting pixel definition portion 153. Because the first light-shielding pixel definition portion 152 is formed by exposure and development, the arcuate surface of the edge of the first light-shielding pixel definition portion 152 is formed in a direction away from the first pixel opening 151 due to the fluidity of the developing solution, causing the light-shielding side to protrude toward the light-transmitting pixel definition portion 153.

[0043] In some embodiments, the maximum thickness of the light-transmitting pixel defining portion 153 is less than the maximum thickness of the first light-shielding pixel defining portion 152. With this configuration, when the first groove 161 is formed on both the light-transmitting pixel defining portion 153 and the first light-shielding pixel defining portion 152, it is beneficial to improve the morphology of the first groove 161 and enhance the reliability and stability of the morphology of the first groove 161.

[0044] In some embodiments, the ratio of the maximum thickness of the light-transmitting pixel defining portion 153 to the maximum thickness of the first light-shielding pixel defining portion 152 is greater than or equal to 1 / 5. This configuration ensures that the light-transmitting pixel defining portion 153 has sufficient thickness, reducing the risk that the solution forming the first groove 161, which penetrates the light-transmitting pixel defining portion 153, will damage the planarization layer or the like on the driving substrate 11.

[0045] In some embodiments, the maximum thickness of the light-transmitting pixel defining portion 153 is greater than or equal to 0.3 micrometers. This is configured to ensure that the light-transmitting pixel defining portion 153 has sufficient thickness, thereby reducing the risk that the solution forming the first groove 161, which penetrates the light-transmitting pixel defining portion 153, may damage the planarization layer or the like on the driving substrate 11.

[0046] In some embodiments, please refer to Figure 7 and Figure 8 The pixel definition layer 15 also has multiple second pixel openings 154 in the display area AA2 and includes a second light-shielding pixel definition part 155. The multiple second pixel openings 154 are embedded in the second light-shielding pixel definition part 155, that is, the second light-shielding pixel definition part 155 in the display area AA2 is integral. The second light-shielding pixel definition part 155 is provided with a second groove 162, and the light-emitting shared layer 124 is also located in the second groove 162. In this way, the second groove 162 increases the overall length of the light-emitting shared layer 124, and extends the path of the lateral leakage generated by the light-emitting shared layer 124 in the display area AA2 from one light-emitting pixel 121 to another light-emitting pixel 121, thereby improving the lateral leakage problem generated by the light-emitting shared layer 124 in the display area AA2 and improving the display abnormality problem caused by the lateral leakage problem in the display area AA2.

[0047] In some embodiments, please refer to Figure 5 and Figure 7 The shape of the first longitudinal section of the first groove 161 is different from the shape of the second longitudinal section of the second groove 162. Both the first and second longitudinal sections are perpendicular to the plane where the substrate 111 is located. Since the first groove 161 is formed on at least one of the first light-shielding pixel defining portion 152 and the light-transmitting pixel defining portion 153, and the second groove 162 is formed on the second light-shielding pixel defining portion 155 which has uniform properties, the formation environment of the first groove 161 is different from the formation environment of the second groove 162, so that the shape of the first longitudinal section of the first groove 161 is different from the shape of the second longitudinal section of the second groove 162. For example, when the first groove 161 is formed on the first light-shielding pixel defining portion 152 and the light-transmitting pixel defining portion 153, and the second groove 162 is formed on the second light-shielding pixel defining portion 155, the bottom of the first longitudinal section of the first groove 161 is inclined, and the bottom of the second longitudinal section of the second groove 162 is horizontal, so that the shape of the first longitudinal section of the first groove 161 is different from the shape of the second longitudinal section of the second groove 162.

[0048] In some embodiments, the first longitudinal section and the second longitudinal section can both be a structure that is wider at the top and narrower at the bottom, that is, the area of ​​the top of the first groove 161 is greater than the area of ​​the bottom of the first groove 161, and the area of ​​the top of the second groove 162 is greater than the area of ​​the bottom of the second groove 162.

[0049] In some embodiments, please refer to Figure 3 and Figure 8 The shape of the orthographic projection of the first groove 161 onto the substrate 111 is the same as the shape of the second groove 162 onto the substrate 111, for example, both being annular. This arrangement makes the effect of the first groove 161 in the light-transmitting display area AA1 and the second groove 162 in the display area AA2 in improving the lateral leakage problem similar, thereby enhancing the consistency of the display effect between the light-transmitting display area AA1 and the display area AA2.

[0050] In the display panel of this application embodiment, when the display panel uses a color filter layer (which can be called depolarization technology, Pol-less technology) and a black matrix layer in combination with a light-shielding pixel definition layer to improve the contrast between the display area and the light-transmitting display area, and uses tandem light-emitting pixels (which can be called Tandem technology) to improve the lifespan of the display panel, a portion of the light-shielding pixel definition layer in the light-transmitting display area is removed to form multiple spaced first light-shielding pixel definition portions, and a first groove is formed on the first light-shielding pixel definition portions. This can simultaneously take into account the contrast between the display area and the light-transmitting display area, improve the lateral leakage problem in the light-transmitting display area caused by the shared light-emitting layer required by the tandem light-emitting pixels, and make full use of the limited space in the light-transmitting display area. That is, it takes into account the multiple performance requirements of high transmittance, low reflectance and low leakage in the light-transmitting display area, providing a reliable solution for the deep integration of Tandem technology, PLP technology and CUP technology.

[0051] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0052] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0053] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a light-transmitting display area and comprises: Drive substrate; A pixel definition layer is located on one side of the driving substrate, and a plurality of first pixel openings are provided in the light-transmitting display area, including a plurality of spaced first light-shielding pixel definition portions; The light-emitting device layer includes a plurality of light-emitting pixels; at least one of the light-emitting pixels is located in a corresponding first pixel opening.

2. The display panel according to claim 1, characterized in that, A first light-blocking pixel definition surrounds the corresponding first pixel opening.

3. The display panel according to claim 2, characterized in that, The pixel definition layer further includes a light-transmitting pixel definition section, which is located between adjacent first light-shielding pixel definition sections.

4. The display panel according to claim 3, characterized in that, The light-emitting device layer further includes a light-emitting common layer, and the display panel further includes a first groove. The first groove is disposed in at least one of the first light-shielding pixel definition portion and the light-transmitting pixel definition portion, and the light-emitting common layer covers the pixel definition layer and is located in the first groove.

5. The display panel according to claim 4, characterized in that, At least one of the first grooves is disposed in the first light-shielding pixel definition portion and the light-transmitting pixel definition portion.

6. The display panel according to claim 5, characterized in that, The first groove includes a first groove bottom, at least a portion of which is inclined relative to the plane on which the drive substrate is located.

7. The display panel according to claim 4, characterized in that, The first groove is positioned around the first pixel opening.

8. The display panel according to claim 4, characterized in that, The driving substrate includes a substrate, and the light-emitting device layer further includes an anode layer. The anode layer is located between the pixel definition layer and the driving substrate and includes a plurality of spaced anodes. The first light-shielding pixel definition portion is in contact with the edge of the anode of the light-transmitting display area. The orthographic projection of the first groove bottom of the first groove on the substrate is spaced from the orthographic projection of the anode on the substrate.

9. The display panel according to claim 8, characterized in that, The display panel further includes a light-transmitting conductive portion, which is located between the anode and the driving substrate in the light-transmitting display area and is in contact with the anode and the first light-shielding pixel definition portion. The orthographic projection of the first groove bottom of the first groove on the substrate is spaced apart from the orthographic projection of the light-transmitting conductive portion on the substrate.

10. The display panel according to claim 8, characterized in that, The first light-shielding pixel definition portion is located between the first groove and the driving substrate.

11. The display panel according to claim 4, characterized in that, The display panel also has a display area, and the pixel definition layer is provided with a plurality of second pixel openings in the display area and includes a second light-shielding pixel definition part, wherein the plurality of second pixel openings are embedded in a second light-shielding pixel definition part; the second light-shielding pixel definition part is provided with a second groove, and the light-emitting common layer is also located in the second groove.

12. The display panel according to claim 11, characterized in that, The driving substrate includes a substrate, wherein the shape of the first longitudinal section of the first groove is different from the shape of the second longitudinal section of the second groove, and both the first longitudinal section and the second longitudinal section are perpendicular to the plane in which the substrate is located.

13. The display panel according to claim 11, characterized in that, The driving substrate includes a substrate, and the shape of the orthographic projection of the first groove on the substrate is the same as the shape of the second groove on the substrate.

14. The display panel according to claim 3, characterized in that, The maximum thickness of the light-transmitting pixel definition portion is less than the maximum thickness of the first light-shielding pixel definition portion.

15. The display panel according to claim 3, characterized in that, The ratio of the maximum thickness of the light-transmitting pixel definition portion to the maximum thickness of the first light-shielding pixel definition portion is greater than or equal to 1 / 5.

16. The display panel according to claim 15, characterized in that, The maximum thickness of the light-transmitting pixel definition section is greater than or equal to 0.3 micrometers.

17. The display panel according to any one of claims 1 to 16, characterized in that, The display panel further includes a color filter layer and a black matrix layer. The color filter layer and the black matrix layer are located on the side of the light-emitting device layer away from the driving substrate. The color filter layer includes multiple filter units of different colors, and the multiple filter units of different colors are embedded in the black matrix layer.

18. The display panel according to any one of claims 1 to 16, characterized in that, One of the light-emitting pixels includes a first light-emitting pixel and a second light-emitting pixel, wherein the second light-emitting pixel is located on the side of the first light-emitting pixel opposite to the driving substrate.

Images