Display panel and display device

Abstract

Embodiments of the present application provide a display panel and a display device, and relate to the field of display, which is used to weaken the reflectivity difference between the optical component area and the conventional display area. The display panel comprises a display area, a substrate, a light emitting device layer located on one side of the substrate, an encapsulation layer located on the side of the light emitting device layer away from the substrate, the encapsulation layer comprising a first encapsulation layer, a filter layer located on the side of the encapsulation layer away from the substrate, the filter layer comprising a black matrix and a color resistance, wherein the black matrix is used to define a light transmission area, a shielding area and a light exit area, the light exit area is located in the first display area and the optical component area, the shielding area is located in the first display area and the optical component area, the light transmission area is located in the optical component area, and the color resistance is located at least in the light exit area; and a micro-nano structure located in the light transmission area and on the side of the first encapsulation layer away from the substrate.

Description

[Technical Field]

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

[0002] Currently, in pursuit of higher screen-to-body ratios and lower power consumption, under-display camera (CUP) and polarizer-less (POL-less) technologies have emerged. However, in existing display panels using these technologies, there is a significant difference in reflectivity between the regular display area and the area where the optical components for the camera are located, resulting in poor visual effects. [Summary of the Invention]

[0003] In view of this, embodiments of the present invention provide a display panel and a display device to effectively reduce the difference in reflectivity between the optical component area and the conventional display area.

[0004] On one hand, embodiments of the present invention provide a display panel, including:

[0005] The display area includes a first display area and an optical component area;

[0006] Substrate;

[0007] The light-emitting device layer located on one side of the substrate;

[0008] An encapsulation layer located on the side of the light-emitting device layer facing away from the substrate, the encapsulation layer including a first encapsulation layer;

[0009] A filter layer located on the side of the encapsulation layer facing away from the substrate, the filter layer including a black matrix and a color resist, wherein the black matrix is ​​used to define a light-transmitting area, a blocking area and a light-emitting area, the light-emitting area is located in the first display area and the optical component area, the blocking area is located in the first display area and the optical component area, the light-transmitting area is located in the optical component area, and the color resist is located at least in the light-emitting area;

[0010] The micro / nano structure is located in the light-transmitting region and on the side of the first encapsulation layer facing away from the substrate.

[0011] On the other hand, based on the same inventive concept, embodiments of the present invention provide a display device including the above-described display panel.

[0012] One of the above technical solutions has the following beneficial effects:

[0013] In this embodiment of the invention, a micro-nano structure is provided at the position corresponding to the light-transmitting area on one side of the first encapsulation layer. Because the characteristic size of the micro-nano structure is very small, for example, smaller than the wavelength of visible light, the micro-nano structure will have the characteristic of a gradual change in refractive index, similar to a moth's eye. In this way, the micro-nano structure will play a role in reducing reflection and increasing transmission of ambient light entering through the light-transmitting area, reducing the degree of reflection of ambient light by the light-transmitting area, and thus effectively compensating for the problem of reflection difference between the light-transmitting area and the blocking area caused by the absence of a black matrix in the light-transmitting area, weakening the difference in reflectivity between the optical component area and the first display area, and improving the visual effect.

[0014] Moreover, unlike the principle of light absorption by the black matrix, the micro-nano structure does not absorb ambient light when it plays an anti-reflection role, but rather allows the ambient light to pass through. In addition, micro-nano structures are generally made of light-transmitting materials. Therefore, the technical solution provided by the embodiments of the present invention can not only weaken the difference in reflectivity between the optical component area and the first display area, but also significantly increase the transmittance of the optical component area, resulting in a better imaging effect of the display panel. [Attached Image Description]

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of the present invention;

[0017] Figure 2 A cross-sectional view of a display panel provided in an embodiment of the present invention;

[0018] Figure 3 Another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0019] Figure 4 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0020] Figure 5 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0021] Figure 6 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0022] Figure 7 Another top view of the display panel provided in an embodiment of the present invention;

[0023] Figure 8This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0024] Figure 9 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0025] Figure 10 This is another top view of the display panel provided in an embodiment of the present invention;

[0026] Figure 11 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0027] Figure 12 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0028] Figure 13 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0029] Figure 14 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0030] Figure 15 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0031] Figure 16 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0032] Figure 17 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0033] Figure 18 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0034] Figure 19 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0035] Figure 20 This is another cross-sectional view of the display panel provided in an embodiment of the present invention;

[0036] Figure 21 This is a schematic diagram of a display device provided in an embodiment of the present invention.

Detailed Implementation Methods

[0037] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Various modifications and variations can be made to the present invention without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, the present invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0039] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0040] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0041] As described in the background section, existing display panels mostly employ under-display camera technology and polarizer de-polarization technology to improve screen-to-body ratio and reduce power consumption. Under-display camera technology refers to setting up an optical component area within the display area that combines display and light transmission capabilities. The camera and other optical components are placed in this area on the backlight side of the display panel. Polarizer de-polarization technology uses a filter layer instead of a traditional polarizer. This filter layer includes color resist and a black matrix. The color resist transmits light of the same color as the polarizer and filters light of a different color, while the black matrix serves to block light and prevent light leakage.

[0042] However, during their research, the inventors discovered that the optical component area of ​​this type of display panel typically requires a light-transmitting zone to ensure its transmittance. Correspondingly, the black matrix needs to be perforated in the light-transmitting zone to avoid obstructing it. However, when ambient light passes through the light-transmitting zone, without the black matrix's obstruction, most of the ambient light is directly transmitted inward to the encapsulation layer. Since the encapsulation layer consists of alternating layers of inorganic and organic encapsulation layers, and there is a significant difference in refractive index between the inorganic and organic layers, ambient light, after reaching the encapsulation layer, undergoes significant reflection at the interface between the inorganic and organic layers. This results in the reflectivity of the optical component area being significantly higher than that of the conventional display area. For example, in some existing display panels, the reflectivity of the optical component area is nearly 4.5% higher than that of the conventional display area, severely impacting the visual effect.

[0043] To address this, embodiments of the present invention provide a display panel, the structural design of which can effectively improve the reflectivity difference between the optical component area and the conventional display area.

[0044] like Figure 1 As shown, Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of the present invention. The display panel includes a display area 1, which includes a first display area 2 and an optical component area 3. The first display area 2 is a conventional display area, and optical components such as a camera are correspondingly disposed in the optical component area 3. In this embodiment of the present invention, the display area 1 may include one, two, or more optical component areas 3. The shape of the optical component area 3 can be any shape such as square, circular, or elliptical, and this embodiment of the present invention does not impose specific limitations on it.

[0045] like Figure 2 As shown, Figure 2 This is a cross-sectional view of a display panel provided in an embodiment of the present invention. The display panel further includes a substrate 4, a light-emitting device layer 5, an encapsulation layer 6, a filter layer 7, and a micro / nano structure 8.

[0046] The light-emitting device layer 5 is located on one side of the substrate 4. The light-emitting device layer 5 includes a pixel definition layer 9 and multiple light-emitting elements 10. The light-emitting elements 10 include an anode 11, a light-emitting layer 12 and a cathode 13. The light-emitting layer 12 is located in the opening of the pixel definition layer 9.

[0047] The encapsulation layer 6 is located on the side of the light-emitting device layer 5 facing away from the substrate 4, and is used to protect and encapsulate the display panel. The encapsulation layer 6 includes a first encapsulation layer 14.

[0048] The filter layer 7 is located on the side of the encapsulation layer 6 facing away from the substrate 4. The filter layer 7 includes a black matrix 15 and a color resist 16. The black matrix 15 defines a light-transmitting area 17, a blocking area 18, and a light-emitting area 19. The light-emitting area 19 is located between the first display area 2 and the optical component area 3, corresponding to the opening of the pixel definition layer 9, and can also be understood as the opening area of ​​a sub-pixel. The blocking area 18 is located between the first display area 2 and the optical component area 3, and can also be understood as the non-transparent area 17. The light-transmitting area 17 is located in the optical component area 3, and the transmittance of the light-transmitting area 17 is higher than that of the light-emitting area 19 and the blocking area 18. Ambient light passes through the light-transmitting area 17 and enters the camera, enabling the camera to collect ambient light. The color resist 16 is located at least in the light-emitting area 19, and the color of the color resist 16 is the same as the light-emitting color of its corresponding light-emitting element 10.

[0049] The micro / nano structure 8 is located in the light-transmitting area 17 and on the side of the first encapsulation layer 14 facing away from the substrate 4.

[0050] In this embodiment of the invention, a micro-nano structure 8 is provided on one side of the first encapsulation layer 14 at the position corresponding to the light-transmitting area 17. Because the feature size of the micro-nano structure 8 is very small, for example, smaller than the wavelength of visible light, the micro-nano structure 8 will have the characteristic of a gradual change in refractive index, similar to a moth's eye. In this way, the micro-nano structure 8 will play a role in reducing reflection and increasing transmission of ambient light entering through the light-transmitting area 17, reducing the degree of reflection of ambient light by the light-transmitting area 17, and thus effectively compensating for the problem of the difference in reflection between the light-transmitting area 17 and the blocking area 18 caused by the absence of a black matrix 15 in the light-transmitting area 17. This effectively weakens the difference in reflectivity between the optical component area 3 and the first display area 2, and improves the visual effect.

[0051] Moreover, unlike the principle of light absorption by the black matrix, the micro-nano structure 8 does not absorb ambient light when it plays a role in reducing reflection, but rather allows ambient light to pass through. In addition, the micro-nano structure 8 is generally made of light-transmitting materials. Therefore, by adopting the technical solution provided by the embodiments of the present invention, not only can the difference in reflectivity between the optical component area 3 and the first display area 2 be weakened, but the transmittance of the optical component area 3 can also be significantly increased, resulting in a better imaging effect of the display panel.

[0052] Understandably, see again Figure 2 The display panel may also include an array layer 20, which is located between the substrate 4 and the light-emitting device layer 5. The array layer 20 includes pixel circuits (not shown in the figure) and various signal lines (not shown in the figure).

[0053] In one feasible implementation, such as Figure 3 As shown, Figure 3 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The height h of the micro-nano structure 8 is less than 200 nm, and the spacing d between adjacent micro-nano structures 8 in the light-transmitting area 17 is less than 400 nm. In this embodiment of the present invention, the height of the micro-nano structure 8 refers to the height of the micro-nano structure 8 in the plane perpendicular to the substrate 4.

[0054] The feature size of the micro / nano structure 8 under this structural design is significantly smaller than the wavelength of visible light, and the micro / nano structure 8 can achieve better anti-reflection and anti-transmission effects on ambient light.

[0055] In one feasible implementation, see Figure 4 and Figure 5 The display panel also includes a first film layer 21, which covers the micro / nano structure 8. Specifically, the micro / nano structure 8 is located between the first film layer 21 and the first encapsulation layer 14, and is in contact with both the first film layer 21 and the first encapsulation layer 14. The refractive index of the micro / nano structure 8 is between that of the first film layer 21 and the first encapsulation layer 14.

[0056] It should be noted that since the micro / nano structure 8 itself has the characteristic of a gradual change in refractive index, the refractive index of the micro / nano structure 8 can be understood as a range of refractive indices. The refractive index of the micro / nano structure 8 being between the refractive index of the first film layer 21 and the refractive index of the first encapsulation layer 14 means that the refractive index range of the micro / nano structure 8 itself is between the refractive index of the first film layer 21 and the refractive index of the first encapsulation layer 14.

[0057] When the refractive index of the micro / nano structure 8 is between the refractive index of the first film layer 21 and the refractive index of the first encapsulation layer 14, the refractive indices of the first film layer 21, the micro / nano structure 8, and the first encapsulation layer 14 can exhibit a gradient change from top to bottom. With this configuration, the refractive index difference between the first film layer 21 and the micro / nano structure 8 is very small, and the refractive index difference between the micro / nano structure 8 and the first encapsulation layer 14 is also very small. This significantly reduces the reflection of ambient light at the interface between the first film layer 21 and the micro / nano structure 8, as well as at the interface between the micro / nano structure 8 and the first encapsulation layer 14, thereby further weakening the difference in ambient light reflection between the optical component area 3 and the first display area 2.

[0058] In one feasible implementation, such as Figure 4 As shown, Figure 4 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The encapsulation layer 6 includes a first inorganic encapsulation layer 23, an organic encapsulation layer 24 and a second inorganic encapsulation layer 25 stacked along the direction away from the substrate 4. The first encapsulation layer 14 includes the second inorganic encapsulation layer 25. In this case, the first film layer 21 includes an adhesive layer 22, and the refractive index of the micro / nano structure 8 is between the refractive index of the adhesive layer 22 and the refractive index of the second inorganic encapsulation layer 25.

[0059] This configuration places the micro / nano structure 8 on the surface of the overall encapsulation layer 6 away from the substrate 4. In this configuration, the micro / nano structure 8 is close to the light-emitting surface of the display panel. When ambient light passes through the light-transmitting area 17, it is immediately acted upon by the micro / nano structure 8 upon reaching the encapsulation layer 6, significantly reducing the reflection of ambient light at the interface between the adhesive layer 22 and the second inorganic encapsulation layer 22. Furthermore, since the adhesive layer 22 is generally quite thick, when the micro / nano structure 8 is placed on the surface of the second encapsulation layer 6, it causes almost no surface undulations, thus also helping to optimize the flatness of the film layer.

[0060] In one feasible implementation, such as Figure 5 As shown, Figure 5This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The encapsulation layer 6 includes a first inorganic encapsulation layer 23, an organic encapsulation layer 24, and a second inorganic encapsulation layer 25 stacked along a direction away from the substrate 4. The first encapsulation layer 14 includes the first inorganic encapsulation layer 23. In this case, the first film layer 21 includes the organic encapsulation layer 24, and the refractive index of the micro / nano structure 8 is between the refractive index of the organic encapsulation layer 24 and the refractive index of the first inorganic encapsulation layer 23.

[0061] This configuration involves placing the micro / nano structure 8 on the surface of the first inorganic encapsulation layer 23, away from the substrate 4. When ambient light travels from the organic encapsulation layer 24 to the first inorganic encapsulation layer 23, it is affected by the micro / nano structure 8, effectively reducing reflection at the interface between the organic and inorganic encapsulation layers 24 and 23. Furthermore, since the thickness of the organic encapsulation layer 24 is generally much greater than that of the inorganic encapsulation layer, when the micro / nano structure 8 is placed on the surface of the second encapsulation layer 6, it causes almost no surface undulations in the organic encapsulation layer 24, thus also contributing to optimized film flatness.

[0062] Furthermore, in other optional embodiments of the present invention, the micro / nano structure 8 may also be located simultaneously on the side of the first inorganic encapsulation layer 23 and the second inorganic encapsulation layer 25 facing away from the substrate 4. Specifically, as shown... Figure 6 As shown, Figure 6 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The first encapsulation layer 14 includes a first inorganic encapsulation layer 23 and a second inorganic encapsulation layer 25. The micro / nano structure 8 includes a first micro / nano structure 26 and a second micro / nano structure 27. The first micro / nano structure 26 is located on the side of the first inorganic encapsulation layer 23 facing away from the substrate 4, and the second micro / nano structure 27 is located on the side of the second inorganic encapsulation layer 25 facing away from the substrate 4. The first film layer 21 includes an organic encapsulation layer 24 and an adhesive layer 22. The refractive index of the first micro / nano structure 26 can be between the refractive index of the organic encapsulation layer 24 and the refractive index of the first inorganic encapsulation layer 23, and the refractive index of the second micro / nano structure 27 can be between the refractive index of the adhesive layer 22 and the refractive index of the second inorganic encapsulation layer 25. When the micro / nano structure 8 includes the aforementioned first micro / nano structure 26 and second micro / nano structure 27, see [reference needed]. Figure 6 The arrangement of the second micro-nano structure 27 and the arrangement of the first micro-nano structure 26 can be designed to be the same, that is, in the direction perpendicular to the plane of the substrate 4, the second micro-nano structure 27 and the first micro-nano structure 26 coincide, so as to better achieve the target effect.

[0063] In one feasible implementation, such as Figures 7-9 As shown, Figure 7 This is another top view of the display panel provided in an embodiment of the present invention. Figure 8 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. Figure 9This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The color resist 16 includes a first color resist 28, a second color resist 29 and a third color resist 30. The first color resist 28 is used to transmit first color light, the second color resist 29 is used to transmit second color light, and the third color resist 30 is used to transmit third color light.

[0064] The light-transmitting area 17 includes a first light-transmitting area 31, one side of which is adjacent to a first color resist 28, and the other side of which is adjacent to a second color resist 29 or a third color resist 30.

[0065] The first light-transmitting area 31 includes a first sub-area 32 and a second sub-area 33. The first sub-area 32 is adjacent to the first color resist 28. The spacing between adjacent micro-nano structures 8 in the first sub-area 32 is smaller than the spacing between adjacent micro-nano structures 8 in the second sub-area 33, and / or the height of the micro-nano structures 8 in the first sub-area 32 is greater than the height of the micro-nano structures 8 in the second sub-area 33.

[0066] It is understandable that the smaller the spacing between adjacent micro / nano structures 8, the denser the arrangement of the micro / nano structures 8, and the greater the degree of ambient light de-reflection by the micro / nano structures 8. The greater the height of the micro / nano structures 8, the greater the degree of ambient light de-reflection by the micro / nano structures 8. In this embodiment of the invention, by adjusting the spacing and height of the micro / nano structures 8 in different zones, the hue of the reflected ambient light can also be adjusted.

[0067] Specifically, after ambient light passes through the first color color filter 28, it is converted into first color ambient light. Some of the first color ambient light will be incident obliquely into the adjacent first sub-region 32. Based on the arrangement and size design of the microstructures 8 in the first sub-region 32, these micro-nano structures 8 will reduce the reflection of the incoming first color ambient light to a greater extent, so that only a small amount of the first color ambient light can be reflected. This reduces the first color component in the reflected ambient light, thereby adjusting the hue of the reflected ambient light.

[0068] Based on this design concept, in this embodiment of the invention, the composition of different colors of light in the reflected ambient light can be pre-tested based on a traditional display panel. By determining whether the reflected ambient light is reddish, greenish, or bluish, the first color can be set to be red, green, or blue.

[0069] For example, when a conventional display panel pre-test reveals that the reflected ambient light contains a high proportion of red light, the first color can be set to red. Specifically, the first color resist 28 is a red color resist 16, and one of the second color resist 29 and the third color resist 30 is a blue color resist 16 and the other is a green color resist 16. This allows the micro / nano structure 8 in the first partition 32 to significantly reduce red light reflection, thereby reducing the red light component in the reflected ambient light. This balances the red, green, and blue light components in the reflected ambient light, making it more white and improving the display consistency between the optical component area 3 and the first display area 2.

[0070] When a traditional display panel is pre-tested and found to have an excessive amount of green light in reflected ambient light, the first color can be set to green. Specifically, the first color resist 28 is a green color resist 16, and one of the second color resist 29 and the third color resist 30 is a blue color resist 16, while the other is a red color resist 16. This allows the micro / nano structure 8 in the first partition 32 to significantly reduce green light reflection, thereby reducing the green light component in reflected ambient light and achieving a balance between red, green, and blue light components.

[0071] When a traditional display panel is pre-tested and found to have an excessive amount of blue light in reflected ambient light, the first color can be set to blue. Specifically, the first color resist 28 is a blue color resist 16, and one of the second color resist 29 and the third color resist 30 is a green color resist 16, while the other is a red color resist 16. This allows the micro-nano structure 8 in the first partition 32 to significantly reduce blue light reflection, thereby reducing the blue light component in reflected ambient light and achieving a balance between red, green, and blue light components.

[0072] Furthermore, see again Figure 8 When the spacing between adjacent micro / nano structures 8 in the first sub-region 32 is greater than the spacing between adjacent micro / nano structures 8 in the second sub-region 33, to simplify the arrangement design of micro / nano structures 8 in different partitions, the spacing between adjacent micro / nano structures 8 in the first sub-region 32 can be set to be equal, and the spacing between adjacent micro / nano structures 8 in the second sub-region 33 can be set to be equal. That is, the micro / nano structures 8 in the first sub-region 32 have a first duty cycle, and the micro / nano structures 8 in the second sub-region 33 have a second duty cycle, with the first duty cycle being greater than the second duty cycle.

[0073] And / or, see again Figure 9 When the height of the micro-nano structure 8 in the first sub-region 32 is greater than the height of the micro-nano structure 8 in the second sub-region 33, in order to simplify the size design of the micro-nano structure 8 in different partitions, the height of the micro-nano structure 8 in the first sub-region 32 can be set to be equal, and the height of the micro-nano structure 8 in the second sub-region 33 can be set to be equal.

[0074] Or, such as Figures 10-12 As shown, Figure 10 This is another top view of the display panel provided in an embodiment of the present invention. Figure 11 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. Figure 12 In another cross-sectional view of the display panel provided in the embodiment of the present invention, in the first light-transmitting area 31, along the direction from the first color resist 28 adjacent to it to the second color resist 29 or the third color resist 30 adjacent to it, the spacing between the micro-nano structures 8 increases, and / or the height of the micro-nano structures 8 decreases.

[0075] Taking red as the first color as an example, when the red light component in the reflected ambient light is pre-tested based on traditional display panels, it indicates that the green light and / or blue light components are correspondingly less. When the micro-nano structure 8 in the first light-transmitting area 31 adopts a design with gradually changing spacing and / or height, while utilizing this part of the micro-nano structure 8 to play a greater role in reducing the reflection of red light, it can also take into account that green light and / or blue light have a slightly greater degree of reflection, increasing the green light and / or blue light components in the reflected ambient light, so that the components of red light, green light and blue light can be more easily balanced.

[0076] In one feasible implementation, combined with Figure 7 ,like Figure 13 and Figure 14 As shown, Figure 13 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. Figure 14 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The color resist 16 includes a first color resist 28, a second color resist 29 and a third color resist 30.

[0077] The light-transmitting area 17 includes a second light-transmitting area 34 and a third light-transmitting area 35. Both sides of the second light-transmitting area 34 are adjacent to the first color resist 28, and the third light-transmitting area 35 is not adjacent to the first color resist 28. The spacing between adjacent micro-nano structures 8 in the second light-transmitting area 34 is smaller than the spacing between adjacent micro-nano structures 8 in the third light-transmitting area 35, and / or the height of the micro-nano structures 8 in the second light-transmitting area 34 is greater than the height of the micro-nano structures 8 in the third light-transmitting area 35.

[0078] Similar to the above analysis, by adjusting the spacing and height of the micro-nano structures 8 in the second light-transmitting area 34, the reflection of the first color ambient light can be reduced to a greater extent, thereby reducing the component of the first color light in the reflected ambient light and thus achieving the adjustment of the hue of the reflected ambient light.

[0079] In one feasible implementation, the micro / nano structure 8 has a first cross-section 36 perpendicular to the substrate 4. Along the direction from the substrate 4 to the filter layer 7, the width of at least a portion of the first cross-section 36 of the micro / nano structure 8 decreases, and / or the width of at least a portion of the first cross-section 36 of the micro / nano structure 8 is equal.

[0080] When the width of the first section 36 in the micro / nano structure 8 decreases, in one configuration, see again... Figure 4 and Figure 5 The first cross-section 36 can be triangular, in which case the micro / nano structure 8 is a cone structure. Alternatively, in another configuration, such as... Figure 15 and Figure 16 As shown, Figure 15 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. Figure 16 In another cross-sectional view of the display panel provided in this embodiment of the invention, the first section 36 can also be trapezoidal, in which case the micro / nano structure 8 is a trapezoidal body structure. Alternatively, in another configuration, such as... Figure 17 and Figure 18 As shown, Figure 17 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. Figure 18 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The first cross-section 36 may also be semi-elliptical.

[0081] When the widths of the first cross-section 36 in the micro / nano structure 8 are equal, in one configuration, such as Figure 19 and Figure 20 As shown, Figure 19 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. Figure 20 This is another cross-sectional view of the display panel provided in an embodiment of the present invention. The first cross-section 36 can be square, and in this case, the micro-nano structure 8 is a cylindrical structure.

[0082] The micro / nano structures 8 described above all have superior anti-reflection and anti-transmission effects on ambient light, and all help to reduce the reflection of ambient light in the optical component area 3.

[0083] Based on the same inventive concept, embodiments of the present invention also provide a display device, such as... Figure 21 As shown, Figure 21 This is a schematic diagram of a display device provided in an embodiment of the present invention. The display device includes the aforementioned display panel 100. The specific structure of the display panel 100 has been described in detail in the above embodiments and will not be repeated here. Figure 21 The display device shown is for illustrative purposes only. The display device can be any electronic device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader or television.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions 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, characterized in that, include: The display area includes a first display area and an optical component area; Substrate; The light-emitting device layer located on one side of the substrate; An encapsulation layer located on the side of the light-emitting device layer facing away from the substrate, the encapsulation layer including a first encapsulation layer; A filter layer located on the side of the encapsulation layer facing away from the substrate, the filter layer including a black matrix and a color resist, wherein the black matrix is ​​used to define a light-transmitting area, a blocking area and a light-emitting area, the light-emitting area is located in the first display area and the optical component area, the blocking area is located in the first display area and the optical component area, the light-transmitting area is located in the optical component area, and the color resist is located at least in the light-emitting area; The micro / nano structure is located in the light-transmitting area and on the side of the first encapsulation layer facing away from the substrate; The color resist includes a first color resist, a second color resist, and a third color resist; The light-transmitting area includes a first light-transmitting area, one side of which is adjacent to the first color resist, and the other side of which is adjacent to the second color resist or the third color resist; the first light-transmitting area includes a first sub-area and a second sub-area, the first sub-area being adjacent to the first color resist, wherein the spacing between adjacent micro / nano structures in the first sub-area is smaller than the spacing between adjacent micro / nano structures in the second sub-area, and / or the height of the micro / nano structures in the first sub-area is greater than the height of the micro / nano structures in the second sub-area; And / or, the light-transmitting area includes a second light-transmitting area and a third light-transmitting area, both sides of the second light-transmitting area are adjacent to the first color resist, and the third light-transmitting area is not adjacent to the first color resist, wherein the spacing between adjacent micro / nano structures in the second light-transmitting area is smaller than the spacing between adjacent micro / nano structures in the third light-transmitting area, and / or, the height of the micro / nano structure in the second light-transmitting area is greater than the height of the micro / nano structure in the third light-transmitting area.

2. The display panel according to claim 1, characterized in that, The height of the micro / nano structure is less than 200 nm, and the spacing between adjacent micro / nano structures in the light-transmitting region is less than 400 nm.

3. The display panel according to claim 1, characterized in that, The display panel further includes a first film layer covering the micro / nano structure, wherein the refractive index of the micro / nano structure is between the refractive index of the first film layer and the refractive index of the first encapsulation layer.

4. The display panel according to claim 1, characterized in that, The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked along a direction away from the substrate, wherein the first encapsulation layer includes the second inorganic encapsulation layer.

5. The display panel according to claim 1, characterized in that, The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked along a direction away from the substrate, wherein the first encapsulation layer includes the first inorganic encapsulation layer.

6. The display panel according to claim 1, characterized in that, The spacing between adjacent micro / nano structures in the first sub-region is equal, and the spacing between adjacent micro / nano structures in the second sub-region is equal; And / or, the heights of the micro-nano structures in the first sub-region are equal, and the heights of the micro-nano structures in the second sub-region are equal.

7. The display panel according to claim 1, characterized in that, In the first light-transmitting area, the spacing between the micro-nano structures increases along the direction from the first color resist adjacent to it to the second color resist or the third color resist adjacent to it, and / or the height of the micro-nano structures decreases.

8. The display panel according to claim 1, characterized in that, The micro / nanostructure has a first cross-section perpendicular to the substrate. Along the direction from the substrate to the filter layer, the width of the first cross-section of at least a portion of the micro / nanostructure decreases, and / or the width of the first cross-section of at least a portion of the micro / nanostructure is equal.

9. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 8.

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