Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. A display area of the display panel comprises a first display area close to a non-display area and a second display area far away from the non-display area, in the first display area, the thickness of an organic layer close to the non-display area is smaller than the thickness of an organic layer far away from the non-display area, and the distance between every two adjacent black matrixes close to the non-display area is smaller than the distance between every two adjacent black matrixes close to the non-display area. The distance between every two adjacent black matrixes close to the first display area in the second display area is larger than or equal to the distance between every two adjacent black matrixes close to the second display area in the first display area, and the distance between every two adjacent black matrixes close to the non-display area in the second display area is smaller than or equal to the distance between every two adjacent black matrixes close to the second display area in the first display area. The brightness of each area in the first display area is similar or even the same, the brightness of the first display area and the brightness of the second display area are similar or even the same, and the display uniformity is improved.

Description

Technical Field

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

[0002] OLED (Organic Light-Emitting Diode) display devices are widely used due to their advantages such as self-luminescence and flexibility. In order to reduce the impact of external reflected light, existing OLED display devices will be equipped with polarizers on the OLED display devices. However, due to the large thickness of the polarizer, the emitted light of the OLED display device will be absorbed, resulting in low light efficiency and high power consumption. In response to the problems of OLED display devices using polarizers, a depolarizer (Pol Less Panel, PLP) technology is proposed. By replacing the polarizer with a black matrix and a color resistor, the external reflected light is reduced while the light transmittance of the OLED display device is improved. However, in actual use, it is found that OLED display devices using PLP technology will have problems such as shiny edges and powdering, resulting in uneven display.

[0003] Therefore, the existing OLED display devices using the PLP technology have the technical problem of uneven display. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device to solve the technical problem of uneven display in existing OLED display devices using PLP technology.

[0005] In order to achieve the above object, according to a first aspect of the present application, a display panel is provided, comprising a display area and a non-display area, wherein the display area comprises a first display area close to the non-display area and a second display area far from the non-display area, and the display panel comprises:

[0006] substrate;

[0007] A light-emitting functional layer is disposed on one side of the substrate;

[0008] an encapsulation layer, disposed on a side of the light-emitting functional layer away from the substrate, the encapsulation layer comprising an organic layer, wherein in the first display area, a thickness of the organic layer close to the non-display area is less than a thickness of the organic layer away from the non-display area;

[0009] A black matrix layer is arranged on a side of the encapsulation layer away from the light-emitting functional layer, and the black matrix layer includes a plurality of black matrices arranged in an array;

[0010] Among them, in the first display area, the distance between two adjacent black matrices close to the non-display area is smaller than the distance between two adjacent black matrices away from the non-display area, and the distance between two adjacent black matrices close to the first display area in the second display area is greater than or equal to the distance between two adjacent black matrices close to the second display area in the first display area.

[0011] Optionally, in the first display area, the thickness of the organic layer increases gradually along the direction away from the non-display area, and the distance between two adjacent black matrices increases gradually along the direction away from the non-display area.

[0012] Optionally, in the first display area, the width of the black matrix decreases gradually in a direction away from the non-display area.

[0013] Optionally, in the first display area, a portion of the black matrices have equal widths, and another portion of the black matrices have unequal widths.

[0014] Optionally, in the second display area, the thickness of each part of the organic layer is equal, and the distance between any two adjacent black matrices is equal.

[0015] Optionally, the thickness of the organic layer in the second display area is equal to the maximum thickness of the organic layer in the first display area, and the maximum distance between two adjacent black matrices in the first display area is smaller than the distance between two adjacent black matrices in the second display area.

[0016] Optionally, the display area further includes a third display area, and the third display area is located between the first display area and the second display area;

[0017] The thickness of the organic layer in the third display area is greater than the thickness of the organic layer in the second display area, and the minimum distance between two adjacent black matrices in the third display area is greater than the distance between two adjacent black matrices in the second display area.

[0018] Optionally, the non-display area includes a special-shaped area and a frame area, and the display area is arranged between the special-shaped area and the frame area;

[0019] In the display area, the thickness of the organic layer close to the irregularly shaped area is smaller than the thickness of the organic layer far from the irregularly shaped area, and the thickness of the organic layer close to the frame area is smaller than the thickness of the organic layer far from the frame area;

[0020] In the display area, the spacing between two adjacent black matrices close to the irregular area is smaller than the spacing between two adjacent black matrices away from the irregular area; the spacing between two adjacent black matrices close to the border area is smaller than the spacing between two adjacent black matrices away from the border area.

[0021] Optionally, in the first display area, an angle between a surface of the organic layer away from the substrate and a horizontal plane ranges from 10 degrees to 20 degrees.

[0022] According to a second aspect of the present application, a display device is provided, comprising a display panel as described in any one of the above embodiments.

[0023] The embodiments of the present application provide a display panel and a display device; the display area of ​​the display panel includes a first display area close to a non-display area and a second display area far from the non-display area. In the first display area, the thickness of the organic layer close to the non-display area is less than the thickness of the organic layer far from the non-display area, the spacing between two adjacent black matrices close to the non-display area is less than the spacing between two adjacent black matrices far from the non-display area, and the spacing between two adjacent black matrices close to the first display area in the second display area is greater than or equal to the spacing between two adjacent black matrices close to the second display area in the first display area, so that the light emission angle of the light emitted by the light-emitting pixels in the area close to the non-display area in the first display area is close to or even the same as the light emission angle of the light emitted by the light-emitting pixels in the area far from the non-display area in the first display area and the light emission angle of the light emitted by the light-emitting pixels in the second display area, so that the brightness of each area in the first display area is close to or even the same, and the brightness of the first display area and the second display area is close to or even the same, thereby improving display uniformity.

[0024] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0026] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0027] Figure 1 Schematic diagram of a comparative display device provided in an embodiment of the present application.

[0028] Figure 2 for Figure 1 The comparison in Figure 1 shows a comparison of the angles of light emission from different regions of the device.

[0029] Figure 3 A plan view of a display panel provided in an embodiment of the present application.

[0030] Figure 4 A cross-sectional view of a display panel provided in an embodiment of the present application.

[0031] Figure 5 A comparison diagram of the emission angles of light in different areas of the display panel provided in an embodiment of the present application.

[0032] Figure 6 A graph of an organic layer with different ramp-up curves provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] Figure 1 A schematic diagram of a comparative display device provided in an embodiment of the present application. Figure 2 for Figure 1 The comparison in Figure 1 shows a comparison of the angles of light emission from different regions of the device.

[0035] In order to illustrate the principle of the technical problem of the embodiment of the present application, the embodiment of the present application provides some comparative display devices. It is understandable that these comparative display devices cannot be regarded as prior art. Figure 1 As shown, the comparative display device includes a substrate 11, a light-emitting layer 12, an organic encapsulation layer 13 and a retaining wall 14, the light-emitting layer 12 includes a red light-emitting layer 121, a green light-emitting layer 122 and a blue light-emitting layer 123, and the comparative display device includes a display area located inside the retaining wall 14 and a non-display area located outside the retaining wall 14; in order to prevent the organic encapsulation layer 13 from overflowing, the comparative display device will set a retaining wall 14 to block the organic encapsulation layer 13. In the actual preparation process, the thickness of the edge portion of the organic encapsulation layer 13 and the thickness of the middle portion of the organic encapsulation layer will be greatly different, specifically, it can reach the micron level. Figure 2 As shown, the comparison display device also includes a black matrix 15, and two portions of different thicknesses in the organic encapsulation layer are selected for comparison, such as Figure 2 The thickness of the portion of the organic encapsulation layer shown in (a) is less than Figure 2 The thickness of the portion of the organic encapsulation layer shown in (b) is Figure 2 (a) and Figure 2 It can be seen from (b) that the spacing between the black matrices in the comparative display device is equal, all L1, while the thickness of the organic encapsulation layer in different areas is different. When the light emitting layer 12 emits light 16, the angle A of the light 16 emitted from the thinner part of the organic encapsulation layer is smaller than the angle B of the light 16 emitted from the thicker part of the organic encapsulation layer, resulting in the brightness of the thinner part of the organic encapsulation layer in the comparative display device being different from the brightness of the thicker part of the organic encapsulation layer in the comparative display device, which in turn causes the display device to have uneven display. Therefore, the existing OLED display device using PLP technology has the technical problem of uneven display.

[0036] In view of the above technical problems, the embodiments of the present application provide a display panel and a display device to solve the above technical problems.

[0037] like Figure 3 , Figure 4 As shown, an embodiment of the present application provides a display panel, the display panel 2 includes a display area 21 and a non-display area 22, the display area 21 includes a first display area 211 close to the non-display area 22 and a second display area 212 away from the non-display area, the display panel 2 includes a substrate 31, a light-emitting functional layer 32, an encapsulation layer 33 and a black matrix layer 34, the light-emitting functional layer 32 is arranged on one side of the substrate 31, the encapsulation layer 33 is arranged on the side of the light-emitting functional layer 32 away from the substrate 31, the encapsulation layer 33 includes an organic layer 332, in the first display area 211, the thickness of the organic layer 332 close to the non-display area 22 is less than the thickness of the organic layer 332 away from the non-display area 22 ( Figure 4 The thickness of the organic layer 332 in two parts of the first display area 211 is shown in FIG. Figure 4 It can be seen that the thickness H1 of the organic layer 332 close to the non-display area is less than the thickness H2 of the organic layer 332 away from the non-display area); the black matrix layer 34 is arranged on the side of the encapsulation layer 33 away from the light-emitting functional layer 32, and the black matrix layer 34 includes a plurality of black matrices 341 arranged in an array;

[0038] In the first display area 211, the distance between two adjacent black matrices 341 close to the non-display area 22 is smaller than the distance between two adjacent black matrices 341 away from the non-display area 22 (for example, Figure 4The spacing K1 between two adjacent black matrices 341 close to the non-display area 22 is smaller than the spacing K3 between two adjacent black matrices 341 away from the non-display area 22, and the spacing between two adjacent black matrices 34 in the second display area 212 close to the first display area 211 is greater than or equal to the spacing between two adjacent black matrices 34 in the first display area 211 close to the second display area 212 (for example Figure 4 The distance K5 between two adjacent black matrices 34 in the second display area 212 is greater than the distance between two adjacent black matrices 34 in the first display area 211 close to the second display area 212).

[0039] An embodiment of the present application provides a display panel; the display area of ​​the display panel includes a first display area close to a non-display area and a second display area far from the non-display area. In the first display area, the thickness of the organic layer close to the non-display area is less than the thickness of the organic layer far from the non-display area, the spacing between two adjacent black matrices close to the non-display area is less than the spacing between two adjacent black matrices far from the non-display area, and the spacing between two adjacent black matrices close to the first display area in the second display area is greater than or equal to the spacing between two adjacent black matrices close to the second display area in the first display area, so that the light emission angles of the light emitted by the light-emitting pixels in the area close to the non-display area in the first display area are close to or even the same as the light emission angles of the light emitted by the light-emitting pixels in the area far from the non-display area in the first display area and the light emission angles of the light emitted by the light-emitting pixels in the second display area, so that the brightness of each area in the first display area is close to or even the same, and the brightness of the first display area and the second display area are close to or even the same, thereby improving display uniformity.

[0040] Specifically, the display panel 2 further includes a driving circuit layer (not shown in the figure), and the driving circuit layer is arranged between the substrate and the light-emitting functional layer.

[0041] Specifically, the light-emitting functional layer 32 includes a pixel electrode layer, a pixel definition layer, a light-emitting material layer and a common electrode layer. The light-emitting material layer includes a first light-emitting portion 321 , a second light-emitting portion 322 and a third light-emitting portion 323 .

[0042] Specifically, the encapsulation layer 33 includes a first inorganic layer 331 , an organic layer 332 and a second inorganic layer 333 , and the organic layer 332 is disposed between the first inorganic layer 331 and the second inorganic layer 333 .

[0043] Specifically, the drawings of the embodiments of the present application show that the first inorganic layer 331 is arranged between the light-emitting parts, but in the actual design, a pixel definition layer is provided between the light-emitting parts, and a common electrode layer is provided on each light-emitting part, and the first inorganic layer is arranged on the common electrode layer. This is only for illustration and does not represent the actual positional relationship between the first inorganic layer and the light-emitting functional layer.

[0044] Specifically, the drawings of the embodiments of the present application show that the first inorganic layer 331 and the second inorganic layer 333 wrap the organic layer 332 in the display area. It can be understood that the first inorganic layer 331 and the second inorganic layer 333 can be in contact in the non-display area, and the organic layer 331 can extend to the junction of the non-display area and the display area.

[0045] Specifically, Figure 5 As shown, Figure 5 (a) is a schematic diagram of the light emission angle when the thickness of the organic layer 332 is H1, Figure 5 (b) is a schematic diagram of the light emission angle when the thickness of the organic layer 332 is H2, Figure 5 It can be seen that after the light emitting functional layer 32 emits the light 16, since the spacing K1 between two adjacent black matrices 341 in the area where the thickness of the organic layer 332 is H1 is smaller than the spacing K5 between two adjacent black matrices 341 in the area where the thickness of the organic layer 332 is H2, the emission angles of the light 16 are all D, so that the emission angles of the light in the areas with different thicknesses of the organic layer are equal, so that the brightness of the areas with different thicknesses of the organic layer is similar or even the same. Based on this principle, the embodiment of the present application designs the display panel so that the display brightness of each area of ​​the display panel is similar or even the same, thereby improving the display uniformity.

[0046] In some embodiments, Figure 4 As shown, in the first display area 211, the thickness of the organic layer 332 increases in the direction away from the non-display area 22, and the distance between two adjacent black matrices 341 increases in the direction away from the non-display area 22. By increasing the thickness of the organic layer in the direction away from the non-display area and increasing the distance between two adjacent black matrices in the direction away from the non-display area, the light luminance of pixels in various areas in the first display area can be similar or even the same, thereby improving the uniformity of the display panel.

[0047] Specifically, Figure 4As shown, taking the first display area 211 provided with four black matrices 341 as an example, from left to right, the thickness of the organic layer 332 in the area corresponding to the first black matrix 341 is less than the thickness of the organic layer 332 in the area corresponding to the second black matrix 341, the thickness of the organic layer 332 in the area corresponding to the second black matrix 341 is less than the thickness of the organic layer 332 in the area corresponding to the third black matrix 341, and the thickness of the organic layer 332 in the area corresponding to the third black matrix 341 is less than the thickness of the organic layer 332 in the area corresponding to the fourth black matrix 341, that is, the thickness of the organic layer 332 increases along the direction away from the non-display area 22. The spacing K1 between the first black matrix 341 and the second black matrix 341 is smaller than the spacing K2 between the second black matrix 341 and the third black matrix 341, and the spacing K2 between the second black matrix 341 and the third black matrix 341 is smaller than the spacing K3 between the third black matrix 341 and the fourth black matrix 341, that is, the spacing between two adjacent black matrices 341 increases in the direction away from the non-display area 22; so that in the first display area, the angles of the light emitted from any two adjacent black matrices are close or even equal, thereby improving the display uniformity in the first display area.

[0048] Specifically, it can be understood that the number of black matrices in each display area in the drawings of the embodiments of the present application does not represent the actual number, and the number of black matrices therein varies depending on the display area.

[0049] Specifically, it can be understood that the light-emitting functional layer includes a plurality of sub-pixels arranged in an array, and the sub-pixels may include a first sub-pixel of a first light-emitting color, a second sub-pixel of a second light-emitting color, and a third sub-pixel of a third light-emitting color. The first sub-pixel, the second sub-pixel, and the third sub-pixel may be a red sub-pixel, a green sub-pixel, and a blue sub-pixel, respectively, but the embodiments of the present application are not limited thereto. The red sub-pixel may include a first light-emitting portion, the green sub-pixel may include a second light-emitting portion, and the blue sub-pixel may include a third light-emitting portion. The opening between two adjacent black matrices corresponds to the sub-pixel setting, and the opening between two adjacent black matrices may be set with a color resistor.

[0050] Specifically, it can be understood that the embodiments of the present application are described based on the same openings of each sub-pixel, that is, when the design of the present application is not adopted, the spacing between any adjacent black matrices is equal, but in actual design, due to the different luminous efficiencies of different sub-pixels, the openings between different black matrices are different to suit different sub-pixels. For example, the luminous efficiency of the blue sub-pixel is low, and it is necessary to make the opening corresponding to the blue sub-pixel larger, then the opening of the black matrix corresponding to the blue sub-pixel will be larger than the opening of the black matrix corresponding to the red sub-pixel, but at this time there is still a problem of uneven display due to different thicknesses of the organic layer. Specifically, the spacing between two adjacent black matrices corresponding to sub-pixels of the same luminous color is the same, but the thickness of the organic layer corresponding to the sub-pixels of the same luminous color is different, which will inevitably lead to the problems described in the embodiments of the present application, or the spacing between two adjacent black matrices corresponding to sub-pixels of different luminous colors is different, and affected by the different thicknesses of the organic layers corresponding to the sub-pixels of different luminous colors, the actual luminous effect will also be different from the expected. At this time, the spacing of the black matrices can be adjusted on the basis of the design of the spacing between adjacent black matrices, so that the luminous effects of the sub-pixels of each luminous color are similar or even the same, thereby improving the display uniformity.

[0051] For example, when the thickness of the organic layer is equal at various places, in the area corresponding to the blue sub-pixel, the spacing between the two adjacent black matrices is greater than the spacing between the two adjacent black matrices in the area corresponding to the red sub-pixel, and the difference between the two is 1. When the thickness of the organic layer is unequal, for example, the thickness of the organic layer in the area corresponding to the blue sub-pixel is less than the thickness of the organic layer in the area corresponding to the red sub-pixel, then the spacing between the two adjacent black matrices can be changed at this time, for example, the spacing between the two adjacent black matrices in the area corresponding to the blue sub-pixel is still greater than the spacing between the two adjacent black matrices in the area corresponding to the red sub-pixel, but the difference between the two becomes 0.5, so that in the area with different thickness of the organic layer, the sub-pixels of different luminous colors can still maintain display uniformity and the luminous efficiency can not be reduced. It can be understood that this is only an example, and the specific design can be processed accordingly according to the actual design. For example, in the area of ​​the sub-pixel of the same luminous color, when the thickness of the organic layer is different, the spacing of the corresponding black matrix can be different, so that the brightness of the sub-pixels of the same luminous color is similar or even the same, and the display uniformity is improved. It will not be repeated here.

[0052] Specifically, the light-emitting functional layer includes multiple sub-pixels of different light-emitting colors. In the first display area, the thickness of the organic layer increases in the direction away from the non-display area. In the setting area of ​​sub-pixels with the same light-emitting color, the distance between two adjacent black matrices increases in the direction away from the non-display area.

[0053] Specifically, in the arrangement area of ​​sub-pixels with the same luminous color, a distance between two adjacent black matrices located in the first display area is smaller than a distance between two adjacent black matrices located in the second display area.

[0054] In some embodiments, Figure 4 As shown, in the first display area 211, the width of the black matrix 341 decreases in the direction away from the non-display area 22. By decreasing the width of the black matrix in the direction away from the non-display area, the distance between two adjacent black matrices can be increased in the direction away from the non-display area, so that the luminous brightness of each place in the first display area is similar or even the same, thereby improving display uniformity.

[0055] Specifically, Figure 4 As shown, in the first display area 211, the width M1 of the first black matrix 341 may be greater than the width M2 of the second black matrix 341, the width M2 of the second black matrix 341 may be greater than the width M3 of the third black matrix 341, and the width M3 of the third black matrix 341 may be greater than the width M4 of the fourth black matrix 341. By changing the width of the black matrix, the spacing between adjacent black matrices is changed.

[0056] For example, in the comparative display device, the width of each black matrix is ​​1, and the spacing between adjacent black matrices is 1. In the embodiment of the present application, the widths of the four black matrices can be 1.3, 1.2, 1.1 and 1 respectively, and the spacing between two adjacent black matrices is 0.7, 0.8 and 0.9 from left to right, respectively, so that the brightness of each location in the first display area is similar or even equal, thereby improving the display uniformity.

[0057] In some embodiments, Figure 4 As shown, in the first display area 211, the widths of a portion of the black matrix 341 are equal, and the widths of another portion of the black matrix 341 are unequal. By making the widths of a portion of the black matrix equal and the widths of another portion of the black matrix 341 unequal, the spacing between two adjacent black matrices can be increased in the direction away from the non-display area, so that the luminous brightness of each location in the first display area is similar or even the same, thereby improving display uniformity.

[0058] Specifically, Figure 4As shown, the width M1 of the first black matrix 341 can be equal to the width M4 of the fourth black matrix 341, the width M1 of the first black matrix 341 can be different from the width M2 of the second black matrix 341, and the width M1 of the first black matrix 341 can be different from the width M3 of the third black matrix 341. For example, in the comparative display device, the width of each black matrix is ​​1, and the spacing between adjacent black matrices is 1. In the embodiment of the present application, the widths of the first black matrix to the fourth black matrix can be 1, 1.5, 1.1 and 1, respectively. Then, the spacing between two adjacent black matrices can be 0.7, 0.8, and 0.9 from left to right, respectively, so that the brightness of each location in the first display area is similar or even equal, thereby improving the display uniformity.

[0059] In some embodiments, in the first display area, the widths of any two black matrices are equal. When the spacing between two adjacent black matrices is increased in a direction away from the non-display area, the widths of any two black matrices can also be equal. By adjusting the spacing between the black matrices, the spacing between two adjacent black matrices is increased in a direction away from the non-display area, so that the luminous brightness of each location in the first display area is similar or even the same, thereby improving display uniformity.

[0060] Specifically, the above embodiment is described by taking the example that the thickness of the organic layer in the first display area increases in the direction away from the non-display area. This is to take into account the effect caused by the blocking of the retaining wall. However, in actual design, the thickness of the organic layer may not increase gradually. In this case, the spacing between the black matrices can be designed accordingly to improve the uniformity of the display panel.

[0061] In some embodiments, Figure 4 As shown, in the second display area 212, the thickness of each part of the organic layer 332 is equal, and the spacing between any two adjacent black matrices 341 is equal. By making the thickness of each part of the organic layer in the second display area equal, and the spacing between any two adjacent black matrices is equal, the brightness of each part in the second display area is similar or even the same, thereby improving display uniformity.

[0062] Specifically, Figure 4 As shown, it can be seen that the thickness of the organic layer in the second display area 212 is H2, the width of the black matrix in the second display area 21 is M5, and the spacing between adjacent black matrices 341 in the second display area 212 is K5.

[0063] Specifically, when the openings of different sub-pixels are different, in the second display area, the thicknesses of various parts in the organic layer are equal, and in the area corresponding to the third sub-pixel, the spacing between two adjacent black matrices is greater than the spacing between two adjacent black matrices in the area corresponding to the first sub-pixel, and the spacing between two adjacent black matrices in the area corresponding to the first sub-pixel is greater than the spacing between two adjacent black matrices in the area corresponding to the second sub-pixel. At this time, in the corresponding area of ​​the sub-pixel of the same luminous color, the spacing between two adjacent black matrices in the second display area can still be maintained greater than the spacing between two adjacent black matrices in the first display area.

[0064] In some embodiments, Figure 4 As shown, the thickness of the organic layer 332 in the second display area 212 is equal to the thickness of the organic layer 332 in the first display area 211 (eg Figure 4 The thickness H2 of the organic layer 332 in the second display area 212 is equal to the thickness of the organic layer 332 in the first display area 211), and the maximum distance between two adjacent black matrices 341 in the first display area 211 is smaller than the distance between two adjacent black matrices 341 in the second display area 212 (for example Figure 4 The maximum spacing K3 between two adjacent black matrices 341 in the first display area 211 is smaller than the spacing K5 between two adjacent black matrices 341 in the second display area 212). By making the thickness of the organic layer in the second display area equal to the maximum thickness of the organic layer in the first display area, and the maximum spacing between two adjacent black matrices in the first display area is smaller than the spacing between two adjacent black matrices in the second display area, the brightness of each location in the first display area can be close to or even equal to the brightness of each location in the second display area, thereby improving display uniformity.

[0065] Specifically, it can be understood that since the thicknesses of various parts of the organic layer in the first display area are not equal, even if the thickness of the organic layer in the second display area is equal to the maximum thickness of the organic layer in the first display area, and the openings between adjacent black matrices have a certain width, it is necessary to make the maximum spacing between two adjacent black matrices in the first display area smaller than the spacing between two adjacent black matrices in the second display area, so that the brightness of the first display area and the second display area are similar or even equal, thereby improving display uniformity.

[0066] In some embodiments, Figure 4As shown, the display area 22 further includes a third display area 213, and the third display area 213 is located between the first display area 211 and the second display area 212; wherein the thickness of the organic layer 332 in the third display area 213 is greater than the thickness of the organic layer 332 in the second display area 212 (for example Figure 4 The thickness H3 of the organic layer 332 in the third display area 213 is greater than the thickness H2 of the organic layer 332 in the second display area 212), and the minimum spacing between two adjacent black matrices 341 in the third display area 213 is greater than the spacing between two adjacent black matrices 341 in the second display area 212. By making the minimum spacing between two adjacent black matrices in the third display area greater than the spacing between two adjacent black matrices in the second display area, the brightness of the second display area is close to or even equal to the brightness of the third display area, thereby improving display uniformity.

[0067] Specifically, it can be understood that when preparing the organic layer, the thickness of the organic layer will first increase, then decrease, and finally remain unchanged in the direction away from the display area. Therefore, the thickness of the organic layer in the third display area will be greater than the thickness of the organic layer in the second display area. At this time, the distance between two adjacent black matrices in the third display area can be made greater than the distance between two adjacent black matrices in the second display area, thereby improving display uniformity.

[0068] Specifically, Figure 4 It is shown that there is no complete black matrix in the third display area 213, but the embodiment of the present application is not limited thereto. In actual design, one or more black matrices may be provided in the third display area 213. Figure 4 In the figure, a portion of the black matrix located in the third display area 213 is regarded as the black matrix within the third display area 213, and the spacing K4 between the black matrix within the third display area 213 and the black matrix 341 of the first display area 211 may be greater than the spacing K5 between the black matrix within the third display area 213 and the black matrix 341 of the second display area 212.

[0069] Specifically, in the third display area, the width of the black matrix can be changed accordingly to change the width of the adjacent black matrix. For example, the width M6 of the black matrix in the third display area 213 can be changed. For details, please refer to the design of the width of the black matrix in the first display area, and refer to the comparison of the width of the black matrix in the first display area and the black matrix in the second display area. For example, the width of the black matrix in the third display area first decreases and then increases in the direction away from the first display area, so that the distance between the two adjacent black matrices in the third display area first increases and then decreases, but the distance between the two adjacent black matrices in the third display area is kept greater than the distance between the two adjacent black matrices in the second display area, which will not be repeated here.

[0070] In some embodiments, Figure 3 As shown, the non-display area 22 includes a special-shaped area 221 and a frame area 222, and the display area 21 is arranged between the special-shaped area 221 and the frame area 222; in the display area 21, the thickness of the organic layer 332 close to the special-shaped area 221 is less than the thickness of the organic layer 332 far from the special-shaped area 221, and the thickness of the organic layer 332 close to the frame area 222 is less than the thickness of the organic layer 332 far from the frame area 222;

[0071] In the display area 21, the spacing between two adjacent black matrices 341 close to the irregular area 221 is smaller than the spacing between two adjacent black matrices 341 away from the irregular area 221; the spacing between two adjacent black matrices 341 close to the border area 222 is smaller than the spacing between two adjacent black matrices 341 away from the border area 222.

[0072] Specifically, it is understandable that Figure 4 The cross section in may be an A1-A2 cross section of the display panel or an A3-A4 cross section of the display panel.

[0073] Specifically, considering that the display panel may be provided with a special-shaped area and a border area, and the special-shaped area and the border area may be provided with retaining walls, resulting in different thicknesses of different parts of the organic layer, the black matrix in the display area adjacent to the special-shaped area and the border area may be adjusted to make the display uniformity of each area of ​​the display area better.

[0074] Specifically, the above embodiment is described by taking the example of designing the structures in the display area around the irregular area and the border area at the same time, but the embodiments of the present application are not limited to this. The structure in the display area around only one of the irregular area and the border area can be designed, and it can be seen that the border area includes four border areas in different orientations, and the structure in the display area around at least one or more of the four border areas in different orientations can be designed. Please refer to the above description for details.

[0075] Specifically, the special-shaped area 221 may include a hole area 221 a and an isolation area 221 b , and a metal wiring may be arranged in the isolation area 221 b .

[0076] Specifically, the embodiment of the present application is described by taking the example that the special-shaped area is set in the middle of the display area, but the embodiment of the present application is not limited thereto, and the special-shaped area can be set around the display panel. The embodiment of the present application is described by taking the example that the display panel includes a frame area on all sides, but the embodiment of the present application is not limited thereto, and the display panel can have no frame area or only have a frame on one side, two sides, or three sides.

[0077] Specifically, Figure 4 As shown, the display panel 2 further includes a retaining wall 35 , and the retaining wall 35 includes a first retaining wall 351 and a second retaining wall 352 . The height of the first retaining wall 351 is greater than the height of the second retaining wall 352 .

[0078] In some embodiments, Figure 4 As shown, in the first display area 211, the angle C between the surface of the organic layer 332 away from the substrate and the horizontal plane is 10 to 20 degrees. By making the angle between the surface of the organic layer away from the substrate and the horizontal plane 10 to 20 degrees, the brightness difference between different areas can be reduced and the display uniformity can be improved.

[0079] Specifically, the embodiment of the present application takes into account that when the climbing slope of the organic layer is different, the degree of display unevenness of the display panel is different, and the angle between the side of the climbing part of the organic layer and the horizontal plane can be set in the range of 10 degrees to 20 degrees, thereby improving display uniformity.

[0080] like Figure 6 As shown, Figure 6 Graphs of the organic layer with different ramp-up curves. Figure 6 The horizontal axis is the distance between the organic layer and the retaining wall, and the vertical axis is the thickness of the organic layer, in micrometers. Figure 6 Two climbing curves of the organic layer are shown in FIG. 4 . It can be understood that the climbing curve here is a curve of the side of the part of the organic layer with unequal thickness located in the first display area. It can be seen that the slope of the first curve 41 is smaller than the slope of the second curve 42. The climbing slopes of organic layers of different shapes are determined by the first dotted line 411 and the second dotted line 421 respectively. It can be determined that when the climbing curve of the organic layer is the first curve 41, the angle C1 between the climbing part of the organic layer and the horizontal plane is about 15 degrees. When the climbing curve of the organic layer is the second curve 42, the angle C2 between the climbing part of the organic layer and the horizontal plane is about 30 degrees. Then, the above two climbing curves are simulated by simulation, and the brightness of the edge of the special-shaped area is simulated to obtain the following Tables 1 and 2: Table 1. Light intensity table obtained by viewing the display panel at different viewing angles in different areas of the display panel when the climbing curve of the organic layer of the display panel is the first curve

[0081]

[0082] Table 2. When the climbing curve of the organic layer of the display panel is the second curve, the light intensity table obtained by viewing the display panel at different viewing angles in different areas of the display panel

[0083]

[0084]

[0085] Among them, taking the light intensity when the organic layer thickness is 6 microns and the viewing angle is 60 degrees in Table 1 as an example, it means that the area in the display panel where the thickness of the organic layer is 6 microns, and the light intensity obtained by viewing the display panel at a viewing angle of 60 degrees is 1.79, and the meaning of other data in the table can be determined accordingly. The brightness ratio value refers to the ratio of the brightness obtained by viewing the display panel from the area with the smallest thickness of the organic layer to the brightness obtained by viewing the display panel after the thickness of the organic layer is stabilized. Taking the above embodiment as an example, that is, the brightness obtained by viewing the display panel from the area with the smallest thickness of the organic layer in the first display area and the brightness obtained by viewing the display panel from the setting area of ​​the organic layer in the second display area, the larger the brightness ratio value, the greater the brightness difference and the worse the display uniformity.

[0086] It can be seen from Table 1 and Table 2 that when the climbing curve of the organic layer is the first curve, the brightness ratio value obtained by viewing the display panel at a viewing angle of 60 degrees is 7.85%, and when the climbing curve of the organic layer is the second curve, the brightness ratio value obtained by viewing the display panel at a viewing angle of 60 degrees is 9.45%; when the climbing curve of the organic layer is the first curve, the brightness ratio value obtained by viewing the display panel at a viewing angle of 75 degrees is 11.54%, and when the climbing curve of the organic layer is the second curve, the brightness ratio value obtained by viewing the display panel at a viewing angle of 75 degrees is 13.14%, that is, when the climbing curve of the organic layer of the display panel is the first curve, the uniformity of the display panel is better, which proves that the technical solution of the embodiment of the present application is effective.

[0087] The above-mentioned embodiments have described the display panel in detail from the design of each film layer of the display panel and the design between each film layer. It can be understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, in the first display area, the thickness of the organic layer increases in the direction away from the non-display area, and the spacing between two adjacent black matrices increases in the direction away from the non-display area. In addition, in the first display area, the angle between one side of the organic layer and the horizontal plane ranges from 10 degrees to 20 degrees.

[0088] At the same time, an embodiment of the present application provides a display device, which includes a display panel as described in any of the above embodiments.

[0089] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0090] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0091] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0092] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area, wherein the display area includes a first display area close to the non-display area and a second display area far from the non-display area. The display panel includes: substrate; A light-emitting functional layer is disposed on one side of the substrate; an encapsulation layer, disposed on a side of the light-emitting functional layer away from the substrate, the encapsulation layer comprising an organic layer, wherein in the first display area, a thickness of the organic layer close to the non-display area is less than a thickness of the organic layer away from the non-display area; A black matrix layer is arranged on a side of the encapsulation layer away from the light-emitting functional layer, and the black matrix layer includes a plurality of black matrices arranged in an array; Among them, in the first display area, the distance between two adjacent black matrices close to the non-display area is smaller than the distance between two adjacent black matrices away from the non-display area, and the distance between two adjacent black matrices close to the first display area in the second display area is greater than or equal to the distance between two adjacent black matrices close to the second display area in the first display area.

2. The display panel according to claim 1, characterized in that: In the first display area, the thickness of the organic layer increases gradually along a direction away from the non-display area, and the distance between two adjacent black matrices increases gradually along a direction away from the non-display area.

3. The display panel according to claim 2, characterized in that: In the first display area, the width of the black matrix decreases gradually in a direction away from the non-display area.

4. The display panel according to claim 2, characterized in that: In the first display area, a portion of the black matrices have equal widths, and another portion of the black matrices have unequal widths.

5. The display panel according to any one of claims 1 to 4, characterized in that: In the second display area, the thickness of each part of the organic layer is equal, and the distance between any two adjacent black matrices is equal.

6. The display panel according to claim 5, characterized in that: The thickness of the organic layer in the second display area is equal to the maximum thickness of the organic layer in the first display area, and the maximum distance between two adjacent black matrices in the first display area is smaller than the distance between two adjacent black matrices in the second display area.

7. The display panel according to any one of claims 1 to 4, characterized in that: The display area further includes a third display area, and the third display area is located between the first display area and the second display area; The thickness of the organic layer in the third display area is greater than the thickness of the organic layer in the second display area, and the minimum distance between two adjacent black matrices in the third display area is greater than the distance between two adjacent black matrices in the second display area.

8. The display panel according to any one of claims 1 to 4, characterized in that: The non-display area includes a special-shaped area and a frame area, and the display area is arranged between the special-shaped area and the frame area; In the display area, the thickness of the organic layer close to the irregularly shaped area is smaller than the thickness of the organic layer far from the irregularly shaped area, and the thickness of the organic layer close to the frame area is smaller than the thickness of the organic layer far from the frame area; In the display area, the spacing between two adjacent black matrices close to the irregular area is smaller than the spacing between two adjacent black matrices away from the irregular area; the spacing between two adjacent black matrices close to the border area is smaller than the spacing between two adjacent black matrices away from the border area.

9. The display panel according to any one of claims 1 to 4, characterized in that: In the first display area, an angle between a surface of the organic layer away from the substrate and a horizontal plane ranges from 10 degrees to 20 degrees.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

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