Display panel, display device and manufacturing method of display panel

Abstract

The application provides a display panel, a display device and a manufacturing method of the display panel. The display panel comprises a substrate and a pixel light-emitting layer, an encapsulation layer, a light filtering layer and a light adjusting layer arranged in sequence. The pixel light-emitting layer comprises a plurality of sub-pixels. The light filtering layer comprises a first light filtering part, a second light filtering part and a third light filtering part, and a first overlapping area, a second overlapping area and a third overlapping area. The light adjusting layer comprises a first lens, a second lens and a third lens arranged at intervals. The overlapping areas of the first lens with the first overlapping area and the third overlapping area are not equal. The overlapping areas of the second lens with the first overlapping area and the second overlapping area are not equal. The overlapping areas of the third lens with the second overlapping area and the third overlapping area are not equal. The first lens, the second lens and the third lens are not at the center of the corresponding sub-pixel. By adjusting the positions of the first lens, the second lens or the third lens, the lens can block and absorb the overflow light on the exit path of the overflow light, and the color deviation phenomenon is improved.

Description

Technical Field

[0001] This application relates to the field of display panel technology, and in particular to a display panel, a display device, and a method for manufacturing the display panel. Background Technology

[0002] To achieve higher brightness, micro-devices incorporate lenses to amplify light output and enhance brightness. Lenses have become a standard feature in high-brightness products due to their high light gain and ability to significantly reduce power consumption.

[0003] In related technologies, the adhesion between individual lenses can cause brightness mura (uniformity) in the display panel. Therefore, during the display panel manufacturing process, a certain gap is set between adjacent lenses. However, light spillage can occur at the gaps. When the spillage light on one side is too strong, it will manifest as color shift within that viewing angle range, thus limiting the product's viewing angle. Summary of the Invention

[0004] The purpose of this application is to provide a display panel, a display device, and a method for manufacturing a display panel, so as to improve the color shift problem of the display panel. The specific technical solution is as follows:

[0005] A first aspect of this application provides a display panel, comprising: a substrate and a pixel light-emitting layer, an encapsulation layer, a filter layer, and a light-modulating layer sequentially disposed along a direction away from the substrate; the pixel light-emitting layer comprises at least a plurality of spaced sub-pixels;

[0006] The filter layer includes a first filter section, a second filter section, and a third filter section arranged in an array, wherein the first filter section, the second filter section, and the third filter section are disposed opposite to the sub-pixel;

[0007] The filter layer includes a first overlapping region, a second overlapping region, and a third overlapping region. The first overlapping region is formed by the second filter portion extending to the surface of the adjacent first filter portion. The second overlapping region is formed by the third filter portion extending to the surface of the adjacent second filter portion. The third overlapping region is formed by the third filter portion extending to the surface of the adjacent first filter portion.

[0008] The light adjustment layer includes a first lens, a second lens, and a third lens arranged at intervals. The first lens is arranged corresponding to the first filter, the second lens is arranged corresponding to the second filter, and the third lens is arranged corresponding to the third filter.

[0009] The overlapping area of ​​the first lens and the first overlapping area is not equal to the overlapping area of ​​the first lens and the third overlapping area; and / or, the overlapping area of ​​the second lens and the first overlapping area is not equal to the overlapping area of ​​the second lens and the second overlapping area; and / or, the overlapping area of ​​the third lens and the second overlapping area is not equal to the overlapping area of ​​the third lens and the third overlapping area.

[0010] In some embodiments of this application, the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The overlap area between the first lens and the first overlapping area is greater than the overlap area between the first lens and the third overlapping area. The overlap area between the second lens and the first overlapping area is equal to the overlap area between the second lens and the second overlapping area. The overlap area between the third lens and the second overlapping area is equal to the overlap area between the third lens and the third overlapping area.

[0011] In some embodiments of this application, the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The overlap area between the first lens and the third overlapping area is greater than the overlap area between the first lens and the first overlapping area, the overlap area between the second lens and the second overlapping area is greater than the overlap area between the second lens and the first overlapping area, and the overlap area between the third lens and the second overlapping area is equal to the overlap area between the third lens and the third overlapping area.

[0012] In some embodiments of this application, the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The overlap area between the first lens and the first overlapping area is greater than the overlap area between the first lens and the third overlapping area, the overlap area between the second lens and the second overlapping area is greater than the overlap area between the second lens and the first lens, and the overlap area between the third lens and the third overlapping area is greater than the overlap area between the third lens and the second overlapping area.

[0013] In some embodiments of this application, the distance between the second lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers; the distance between the first lens and the second lens ranges from 0.6 micrometers to 1.1 micrometers; and the distance between the first lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers.

[0014] In some embodiments of this application, the distance between the second lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers; the distance between the first lens and the second lens ranges from 0.5 micrometers to 0.6 micrometers; and the distance between the first lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers. In some embodiments of this application, the first lens, the second lens, and the third lens are all hemispherical.

[0015] A second aspect of this application provides a display device, the display device comprising the display panel described in any embodiment of the first aspect above.

[0016] A third aspect of this application discloses a method for manufacturing a display panel, comprising the following steps:

[0017] Provide substrate;

[0018] The pixel light-emitting layer, the encapsulation layer, the filter layer, and the light-modulating layer are sequentially formed on the substrate in a direction away from the substrate, and the pixel light-emitting layer includes at least a plurality of spaced sub-pixels;

[0019] The filter layer includes a first filter section, a second filter section, and a third filter section arranged in an array, wherein the first filter section, the second filter section, and the third filter section are disposed opposite to the sub-pixel;

[0020] The filter layer includes a first overlapping region, a second overlapping region, and a third overlapping region. The first overlapping region is formed by the second filter portion extending to the surface of the adjacent first filter portion. The second overlapping region is formed by the third filter portion extending to the surface of the adjacent second filter portion. The third overlapping region is formed by the third filter portion extending to the surface of the adjacent first filter portion.

[0021] The light adjustment layer includes a first lens, a second lens, and a third lens arranged at intervals. The first lens is arranged corresponding to the first filter, the second lens is arranged corresponding to the second filter, and the third lens is arranged corresponding to the third filter.

[0022] The overlapping area of ​​the first lens and the first overlapping area is not equal to the overlapping area of ​​the first lens and the third overlapping area; and / or, the overlapping area of ​​the second lens and the first overlapping area is not equal to the overlapping area of ​​the second lens and the second overlapping area; and / or, the overlapping area of ​​the third lens and the second overlapping area is not equal to the overlapping area of ​​the third lens and the third overlapping area.

[0023] In some embodiments of this application, the steps of forming the first filter portion, the second filter portion, and the third filter portion include:

[0024] A first filter layer is deposited on the side of the encapsulation layer away from the substrate, and a plurality of isolated first filter sections are formed by development and etching using a first mask;

[0025] A second filter layer is deposited on the side of the encapsulation layer away from the substrate. The second filter layer covers the surface of the encapsulation layer and the first filter portion. The second filter portion adjacent to the first filter portion and the first overlapping area are formed by developing and etching with a second mask.

[0026] A third filter layer is deposited on the side of the encapsulation layer away from the substrate. The third filter layer covers the surface of the encapsulation layer, the surface of the first filter portion, and the surface of the second filter portion. The third filter portion, the second overlapping region, and the third overlapping region are formed by developing and etching with a third mask.

[0027] The display panel provided in this application embodiment has a first filter, a second filter, and a third filter that can transmit light of different wavelengths. A first overlapping region, a second overlapping region, and a third overlapping region are formed in the filter layer. The first overlapping region is formed by the second filter extending to the surface of the adjacent first filter; the second overlapping region is formed by the third filter extending to the surface of the adjacent second filter; and the third overlapping region is formed by the third filter extending to the surface of the adjacent first filter. The overlapping regions are composed of two types of filters to limit the emission of spilled light and ensure uniform light emission from the display panel.

[0028] In this configuration, the first overlapping region is formed by the second filter extending to the surface of the adjacent first filter on the side away from the substrate. The light beam emitted by the sub-pixel passes through the first filter and is absorbed by the second filter in the first overlapping region. The light beam emitted by the sub-pixel then passes through the second filter in the first overlapping region and is emitted as overflow light. The second overlapping region is formed by the third filter extending to the surface of the adjacent second filter on the side away from the substrate. The light beam emitted by the sub-pixel passes through the second filter and is absorbed by the third filter in the second overlapping region. The light beam emitted by the sub-pixel then passes through the third filter in the second overlapping region and is emitted as overflow light. The third overlapping region is formed by the third filter extending to the surface of the adjacent first filter on the side away from the substrate. The light beam emitted by the sub-pixel passes through the third filter in the third overlapping region and is emitted as overflow light. The light beam emitted by the sub-pixel then passes through the first filter and is absorbed by the third filter in the third overlapping region.

[0029] The first, second, and third lenses are not centered on their corresponding sub-pixels. When the intensity of a certain spilled light is too high, the display panel will exhibit color shift within that viewing angle range. By adjusting the position of the first, second, or third lens to bring it closer to an overlapping area, the lens can block and absorb the spilled light along its emission path, thus improving the color shift phenomenon. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other embodiments can be obtained based on these drawings.

[0031] Figure 1 This is a cross-sectional view of the first structure of the display panel in the embodiments of this application;

[0032] Figure 2 This is a top view of a first structural design of the display panel in an embodiment of this application;

[0033] Figure 3 This is a cross-sectional view of a second structure of the display panel in an embodiment of this application;

[0034] Figure 4 This is a top view of a second structural design of the display panel in an embodiment of this application;

[0035] Figure 5 This is a cross-sectional view of the third structure of the display panel in the embodiments of this application;

[0036] Figure 6 This is a top view of a third structure of the display panel in an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of the display panel structure in an embodiment of this application.

[0038] The attached figures are labeled as follows:

[0039] Substrate 100, pixel light-emitting layer 200, pixel defining layer 210, first electrode layer 220, light-emitting layer 230, second electrode layer 240, encapsulation layer 300, filter layer 400, first filter portion 410, second filter portion 420, third filter portion 430, first overlapping region 440, second overlapping region 450, third overlapping region 460, light adjustment layer 500, first lens 510, second lens 520, third lens 530. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art based on this application are within the scope of protection of this application.

[0041] like Figures 1 to 6 As shown, the first aspect of this application proposes a display panel, including: a substrate 100 and a pixel light-emitting layer 200, an encapsulation layer 300, a light-filtering layer 400, and a light-adjusting layer 500 sequentially disposed along a direction away from the substrate 100; the pixel light-emitting layer 200 includes at least a plurality of spaced sub-pixels. The light-filtering layer 400 includes a first light-filtering portion 410, a second light-filtering portion 420, and a third light-filtering portion 430 arranged in an array, the first light-filtering portion 410, the second light-filtering portion 420, and the third light-filtering portion 430 being disposed opposite to the sub-pixels. The filter layer 400 includes a first overlapping region 440, a second overlapping region 450, and a third overlapping region 460. The first overlapping region 440 is formed by extending the second filter portion 420 to the surface of the adjacent first filter portion 410; the second overlapping region 450 is formed by extending the third filter portion 430 to the surface of the adjacent second filter portion 420; and the third overlapping region 460 is formed by extending the third filter portion 430 to the surface of the adjacent first filter portion 410. The light adjustment layer 500 includes a first lens 510, a second lens 520, and a third lens 530 disposed at intervals. The first lens 510 is disposed corresponding to the first filter portion 410, the second lens 520 is disposed corresponding to the second filter portion 420, and the third lens 530 is disposed corresponding to the third filter portion 430. The overlapping area of ​​the first lens 510 and the first overlapping region 440 is not equal to the overlapping area of ​​the first lens 510 and the third overlapping region 460; and / or, the overlapping area of ​​the second lens 520 and the first overlapping region 440 is not equal to the overlapping area of ​​the second lens 520 and the second overlapping region 450; and / or, the overlapping area of ​​the third lens 530 and the second overlapping region 450 is not equal to the overlapping area of ​​the third lens 530 and the third overlapping region 460.

[0042] It should be noted that the overlapping area can limit light spill because the light is completely absorbed when it passes through two different colored filters. Therefore, in this embodiment, the overlapping area can be used as a black color resist block commonly found in display panels to prevent light crosstalk at the boundary.

[0043] For ease of explanation, the pixel opposite to the first filter 410 is defined as the first sub-pixel, the pixel opposite to the second filter 420 is defined as the second sub-pixel, and the pixel opposite to the third filter 430 is defined as the third sub-pixel. Figure 1 For example, when using such Figure 1In the manufacturing process shown, from the left-hand perspective, when light passing through the second sub-pixel at an angle of 10°-25° passes through the first overlapping area 440, and when light from the third sub-pixel passes through the second overlapping area 450, some light rays may only pass through a single filter and directly enter the eye without passing through the upper lens. This can easily lead to light overflow and color shift. However, from the right-hand perspective, regardless of the angle at which the light is emitted, it will pass through two different colored filters at the overlapping area. Therefore, there is no light overflow from the right-hand perspective, but this will result in a certain color difference between the left and right perspectives. To improve the aforementioned color shift, in this embodiment, the positions of one, two, or all three of the first lens 510, second lens 520, and third lens 530 can be adjusted to block the overflowing light in the path of the overflowing light, thereby correcting the color shift. This is because in related technologies, the first lens 510, second lens 520, and third lens 530 are located at the center of the first sub-pixel, second sub-pixel, and third sub-pixel, respectively. In other words, in Micro-OLED products, the sub-pixels, the filter layer 400, and the lens are usually designed with central orthographic projection and symmetrical design, meaning that the central axes of the three coincide and are symmetrical from left to right.

[0044] Specifically, such as Figure 1 As shown, in this embodiment, the first filter 410, the second filter 420, and the third filter 430 are disposed opposite to the sub-pixels. The filter sections can transmit light within a fixed wavelength range, and the light emitted by the sub-pixels passes through the filter sections to display color. The first filter 410, the second filter 420, and the third filter 430 can transmit light of different wavelengths. A first overlapping region 440, a second overlapping region 450, and a third overlapping region 460 are formed on the filter layer 400. The first overlapping region 440 is formed by extending the second filter 420 to the surface of the adjacent first filter 410; the second overlapping region 450 is formed by extending the third filter 430 to the surface of the adjacent second filter 420; and the third overlapping region 460 is formed by extending the third filter 430 to the surface of the adjacent first filter 410. The overlapping regions are composed of two types of filter sections to limit the emission of overflowing light and ensure uniform light emission from the display panel.

[0045] Specifically Figure 1In the illustrated embodiment, viewed from the right side, light from all angles can be absorbed by the first overlapping region 440, the second overlapping region 450, and the third overlapping region 460, preventing light from passing through only a single filter. However, viewed from the left side, within a viewing angle range of 10°-25°, light may pass through only a single filter. For example, if only the second filter 420 or only the third filter 430 is passed, a greenish tint will occur when only the second filter 420 is passed, and a bluish tint will occur when only the third filter 430 is passed. It is not difficult to see that due to the influence of current manufacturing processes, in... Figure 1 In the illustrated embodiment, a visual red cast does not occur. However, if the overlapping order of the overlapping areas is changed, a visual red cast may still occur. In this application, the overlapping area of ​​the first lens 510 with the first overlapping area 440 is not equal to its overlapping area with the third overlapping area 460; the overlapping area of ​​the second lens 520 with the first overlapping area 440 is not equal to its overlapping area with the second overlapping area 450; and the overlapping area of ​​the third lens 530 with the second overlapping area 450 is not equal to its overlapping area with the third overlapping area 460. In other words, the lenses are asymmetrically designed relative to the sub-pixels to block and converge excessively strong monochromatic light at an oblique angle, reducing and avoiding color cast and solving the problem of narrow viewing angles in specific product applications. It is understood that the first lens 510, the second lens 520, and the third lens 530 are not centered on their corresponding sub-pixels. When the intensity of a certain spill light is too high, the display panel will exhibit color shift within that viewing angle range. By adjusting the position of the first lens 510, the second lens 520, or the third lens 530, the lens is brought closer to a certain overlapping area, so that the lens blocks and absorbs the spill light in the path of the spill light, thereby improving the color shift phenomenon.

[0046] like Figure 1 , Figure 3 and Figure 5 As shown, in some embodiments, the pixel light-emitting layer 200 includes a pixel defining layer 210, a first electrode layer 220, a light-emitting layer 230, and a second electrode layer 240. The pixel defining layer 210 includes a plurality of arrayed first openings. The first electrode layer 220 is located in the first openings. The light-emitting layer 230 is located on the side of the pixel defining layer 210 away from the substrate 100. The light-emitting layer 230 covers the first electrode layer 220, and the second electrode layer 240 covers the light-emitting layer 230.

[0047] In this embodiment, the first electrode layer 220, the light-emitting layer 230, and the second electrode layer 240 together constitute a sub-pixel. The first electrode layer 220 can be either a cathode or an anode, and the second electrode layer 240 can be either a cathode or an anode.

[0048] like Figures 1 to 2As shown, in some embodiments, the first filter 410 is a red filter (R, Red), the second filter 420 is a green filter (G, Green), and the third filter 430 is a blue filter (B, Blue). The overlap area of ​​the first lens 510 and the first overlapping area 440 is greater than the overlap area of ​​the first lens 510 and the third overlapping area 460. The overlap area of ​​the second lens 520 and the first overlapping area 440 is equal to the overlap area of ​​the second lens 520 and the second overlapping area 450. The overlap area of ​​the third lens 530 and the second overlapping area 450 is equal to the overlap area of ​​the third lens 530 and the third overlapping area 460.

[0049] In this embodiment, the first filter 410 corresponding to the first sub-pixel is a red filter, and the light beam emitted by the first sub-pixel emits red light after passing through the first filter 410. The second filter 420 corresponding to the second sub-pixel is a green filter, and the light beam emitted by the second sub-pixel emits green light after passing through the second filter 420. The third filter 430 corresponding to the third sub-pixel is a blue filter, and the light beam emitted by the third sub-pixel emits blue light after passing through the third filter 430. The overlapping area of ​​the first lens 510 and the first overlapping area 440 is greater than the overlapping area of ​​the first lens 510 and the third overlapping area 460. This means the first lens 510 is positioned closer to the first overlapping area 440. The light beam emitted from the second sub-pixel (beam angle range 10°–25°; oblique light with an angle greater than 25° will be collected by adjacent lenses) passes through the second filter section 420 and then through the second filter section 420 of the first overlapping area 440. The green overflow light emitted from this filter section can enter the interior of the first lens 510 and be reflected multiple times before being emitted again. Therefore, the green overflow light within the beam angle range of 10°–25° will not be emitted directly but will be re-emitted after passing through the first lens 510. This significantly improves the green color shift within this angle range and enhances the display uniformity of the display panel.

[0050] Understandably, in this embodiment, the second lens 520 and the third lens 530 are still located at the center of the second and third sub-pixels, respectively. The only difference is that the first lens 510 is positioned on the path of the green stray light overflow. Adjusting the position of the first lens 510 intercepts the green stray light on its original overflow path, thus resolving the green tint issue and improving the viewing angle. Figure 1 For example, by adjusting the first lens 510 above the first sub-pixel to shift to the right onto the path of the green stray light overflowing from the right side, the green stray light overflowing from the right side can be absorbed and blocked.

[0051] like Figures 3 to 4As shown, in some embodiments, the first filter 410 is a red filter, the second filter 420 is a green filter, and the third filter 430 is a blue filter. The overlap area of ​​the first lens 510 and the third overlapping area 460 is greater than the overlap area of ​​the first lens 510 and the first overlapping area 440. The overlap area of ​​the second lens 520 and the second overlapping area 450 is greater than the overlap area of ​​the second lens 520 and the first overlapping area 440. The overlap area of ​​the third lens 530 and the second overlapping area 450 is equal to the overlap area of ​​the third lens 530 and the third overlapping area 460.

[0052] In this embodiment, the first filter 410 corresponding to the first sub-pixel is a red filter, and the light beam emitted by the first sub-pixel emits red light after passing through the first filter 410. The second filter 420 corresponding to the second sub-pixel is a green filter, and the light beam emitted by the second sub-pixel emits green light after passing through the second filter 420. The third filter 430 corresponding to the third sub-pixel is a blue filter, and the light beam emitted by the third sub-pixel emits blue light after passing through the third filter 430. The overlapping area of ​​the first lens 510 and the third overlapping area 460 is greater than the overlapping area of ​​the first lens 510 and the first overlapping area 440, that is, the first lens 510 is closer to the third overlapping area 460. The overlap area between the second lens 520 and the second overlapping area 450 is greater than the overlap area between the second lens 520 and the first overlapping area 440. This means the second lens 520 is closer to the second overlapping area 450. The blue light emitted from the third sub-pixel (beam angle range 10-25°; oblique light with an angle greater than 25° is collected by adjacent lenses) passes through the third filter section 430 and then through the third filter section 430 of the second overlapping area 450. This blue light can enter the interior of the first lens 510 and the second lens 520, undergo multiple reflections within them, and then re-emit. Therefore, blue light within the beam angle range of 10°-25° will not be directly emitted but will be re-emitted after passing through the first lens 510 and the second lens 520, thus significantly improving blue color shift within this angle range and enhancing the display uniformity of the display panel.

[0053] Understandably, in this embodiment, the third lens 530 is still located at the center of the third sub-pixel, and the first lens 510 and the second lens 520 are positioned on the blue stray light overflow path. Adjusting the positions of the first lens 510 and the second lens 520 intercepts the blue stray light on its original overflow path, resolving the blue tint issue and improving the viewing angle. Figure 3 For example, by adjusting the second lens 520 above the green sub-pixel to the right and shifting it onto the path of the blue stray light overflowing from the right side, the blue stray light overflowing from the right side can be absorbed and blocked.

[0054] like Figures 5 to 6As shown, in some embodiments, the first filter 410 is a red filter, the second filter 420 is a green filter, and the third filter 430 is a blue filter. The overlap area of ​​the first lens 510 and the first overlapping area 440 is greater than the overlap area of ​​the first lens 510 and the third overlapping area 460. The overlap area of ​​the second lens 520 and the second overlapping area 450 is greater than the overlap area of ​​the second lens 520 and the first lens 510. The overlap area of ​​the third lens 530 and the third overlapping area 460 is greater than the overlap area of ​​the third lens 530 and the second overlapping area 450.

[0055] In this embodiment, the first filter 410 corresponding to the first sub-pixel is a red filter, and the light beam emitted by the first sub-pixel emits red light after passing through the first filter 410. The second filter 420 corresponding to the second sub-pixel is a green filter, and the light beam emitted by the second sub-pixel emits green light after passing through the second filter 420. The third filter 430 corresponding to the third sub-pixel is a blue filter, and the light beam emitted by the third sub-pixel emits blue light after passing through the third filter 430.

[0056] The overlapping area of ​​the first lens 510 and the first overlapping area 440 is greater than the overlapping area of ​​the first lens 510 and the third overlapping area 460, meaning the first lens 510 is positioned closer to the first overlapping area 440. Similarly, the overlapping area of ​​the second lens 520 and the second overlapping area 450 is greater than the overlapping area of ​​the second lens 520 and the first lens 510, meaning the second lens 520 is positioned closer to the second overlapping area 450. Likewise, the overlapping area of ​​the third lens 530 and the third overlapping area 460 is greater than the overlapping area of ​​the third lens 530 and the second overlapping area 450, meaning the third lens 530 is positioned closer to the third overlapping area 460. The light beam emitted from the second sub-pixel (beam angle range 10–25°; oblique light with a beam angle greater than 25° will be collected by adjacent lenses) passes through the second filter section 420 and then through the second filter section 420 of the first overlapping area 440. The overflow light emitted from the second filter section 420 can enter the interior of the first lens 510 and, after multiple reflections within the first lens 510, be re-emitted. Therefore, the green overflow light within the beam angle range of 10° to 25° will not be emitted directly, but will be re-emitted after passing through the first lens. The beam emitted by the third sub-pixel (beam angle range of 10° to 25°; oblique light with a beam angle greater than 25° will be collected by the adjacent lens) passes through the third filter section 430 and then through the third filter section 430 of the second overlapping area 450. The overflow light emitted from the third filter section 430 can enter the interior of the second lens 520 and be re-emitted after multiple reflections within the second lens 520. Therefore, the blue overflow light within the beam angle range of 10° to 25° will not be emitted directly, but will be re-emitted after passing through the second lens 520. The beam emitted by the first sub-pixel (beam angle range of 10° to 25°; oblique light with a beam angle greater than 25° will be collected by the adjacent lens) passes through the first filter section 410 and then through the third filter section 430 of the third overlapping area 460. The overflow light emitted from the third filter section 430 can enter the interior of the third lens 530 and be re-emitted after multiple reflections within the third lens 530. Therefore, the spilled light within the beam angle range of 10° to 25° will not be emitted directly, but will be emitted again after passing through the third lens 530.

[0057] The above approach to improving the brightness imbalance of the display panel can be understood as: using Figure 5 For example, the increase in spill light makes the left side brighter than the right side, which can shift the lens to the right as a whole. As a result, the projection area of ​​the lens, filter layer and anode in the right viewing angle extension area is greater than that of the lens, filter layer and anode in the left viewing angle extension area, and the brightness of the right viewing angle is compensated and leveled.

[0058] The first lens 510, second lens 520, and third lens 530 all absorb the spilled light from one side, reducing the brightness of the display panel on that side due to excessive spilled light. Placing the first lens 510, second lens 520, and third lens 530 along the spilled light path solves the problem of uneven brightness on both sides of the display panel. The above embodiment focuses on the difference in left-right viewing angles; when there is a difference in vertical viewing angles, asymmetrical compensation designs can also be considered. The relationships between the vertical, horizontal, left, and right directions are as follows: Figure 7 As shown.

[0059] like Figure 4 , Figure 5 As shown, in some embodiments, the distance between the second lens 520 and the third lens 530 ranges from 0.35 micrometers to 0.5 micrometers; the distance between the first lens 510 and the second lens 520 ranges from 0.6 micrometers to 1.1 micrometers; and the distance between the first lens 510 and the third lens 530 ranges from 0.35 micrometers to 0.5 micrometers.

[0060] In this embodiment, when the spacing between adjacent lenses is less than 0.35 micrometers, the adjacent lenses may stick together due to the influence of the display panel manufacturing precision, resulting in uneven brightness of the display panel. However, when the spacing between adjacent lenses is too large, the overflow light of their respective sub-pixels will increase, leading to severe color shift in the display panel. The spacing between the second lens 520 and the third lens 530 is set to a range of 0.35 micrometers to 0.5 micrometers, the spacing between the first lens 510 and the second lens 520 is set to a range of 0.6 micrometers to 1.1 micrometers, and the distance between the first lens 510 and the third lens 530 is set to 0.35 micrometers to 0.5 micrometers. That is, only the third lens 530 is kept at the center of the third sub-pixel, the first lens 510 is moved closer to the third lens 530, and the second lens 520 is moved closer to the third lens 530 to solve the problem of blue viewing angle.

[0061] like Figure 4 , Figure 5 As shown, in some embodiments, the distance between the second lens 520 and the third lens 530 ranges from 0.35 micrometers to 0.5 micrometers; the distance between the first lens 510 and the second lens 520 ranges from 0.5 micrometers to 0.6 micrometers; and the distance between the first lens 510 and the third lens 530 ranges from 0.35 micrometers to 0.5 micrometers.

[0062] In this embodiment, when the spacing between adjacent lenses is less than 0.35 micrometers, the manufacturing precision of the display panel may cause the adjacent lenses to stick together, resulting in uneven brightness of the display panel. However, when the spacing between adjacent lenses is too large, the overflow light of their respective sub-pixels will increase, leading to severe color shift in the display panel. The distance between the second lens 520 and the third lens 530 is set to a range of 0.35 micrometers to 0.5 micrometers; the distance between the first lens 510 and the second lens 520 is set to a range of 0.5 micrometers to 0.6 micrometers; and the distance between the first lens 510 and the third lens 530 is set to a range of 0.35 micrometers to 0.5 micrometers. This means that the third lens 530 is kept at the center of the third sub-pixel, the first lens 510 is moved closer to the third lens 530, and the second lens 520 is moved closer to the third lens 530. To prevent the distance between the first lens 510 and the second lens 520 from becoming too large after their movement, which could lead to a green tint in the viewing angle, the size of the first lens 510 and the second lens 520 can be increased to minimize the distance between them. This allows the first lens 510 and the second lens 520 to cover the first overlapping area 440 as much as possible, thus solving the problem of a blue tint in the viewing angle and preventing a green tint. Figures 1 to 6 As shown, in some embodiments, the first lens 510, the second lens 520, and the third lens 530 are all hemispherical.

[0063] In this embodiment, the first lens 510, the second lens 520, and the third lens 530 are hemispherical. The lenses are set to amplify the light effect and improve the brightness. In addition, the hemispherical lenses are thinner, which can reduce the overall thickness of the display panel.

[0064] A second aspect of this application provides a display device, which includes a display panel according to any of the embodiments of the first aspect described above.

[0065] In this embodiment, the first filter 410, the second filter 420, and the third filter 430 are disposed opposite to the sub-pixels. The filter sections can transmit light within a fixed wavelength range, and the light emitted by the sub-pixels passes through the filter sections to display color. The first filter 410, the second filter 420, and the third filter 430 can transmit light of different wavelengths. A first overlapping region 440, a second overlapping region 450, and a third overlapping region 460 are formed on the filter layer 400. The first overlapping region 440 is formed by extending the second filter 420 to the surface of the adjacent first filter 410; the second overlapping region 450 is formed by extending the third filter 430 to the surface of the adjacent second filter 420; and the third overlapping region 460 is formed by extending the third filter 430 to the surface of the adjacent first filter 410. The overlapping regions are composed of two types of filter sections to limit the emission of overflowing light and ensure uniform light emission from the display panel.

[0066] In this configuration, the first overlapping region 440 is formed by the second filter portion 420 extending to the surface of the adjacent first filter portion 410 away from the substrate 100. The light beam emitted by the first sub-pixel passes through the first filter portion 410 and is absorbed by the second filter portion 420 in the first overlapping region 440. The light beam emitted by the second sub-pixel passes through the second filter portion 420 and is emitted as overflow light. The second overlapping region 450 is formed by the third filter portion 430 extending to the surface of the adjacent second filter portion 420 away from the substrate 100. The light beam emitted by the second sub-pixel passes through the second filter portion 420 and is emitted as overflow light. The light beam emitted by the third sub-pixel is absorbed by the third filter section 430 of the second overlapping region 450. After passing through the third filter section 430, the light beam emitted by the third sub-pixel is emitted by the third filter section 430 of the second overlapping region 450 to form overflow light. The third overlapping region 460 is the surface of the third filter section 430 extending to the side of the adjacent first filter section 410 away from the substrate 100. The light beam emitted by the third sub-pixel is emitted by the third filter section 430 of the third overlapping region 460 after passing through the third filter section 430, and the light beam emitted by the first sub-pixel is absorbed by the third filter section 430 of the third overlapping region 460 after passing through the first filter section 410.

[0067] The overlapping area of ​​the first lens 510 with the first overlapping area 440 is not equal to its overlapping area with the third overlapping area 460. Similarly, the overlapping area of ​​the second lens 520 with the first overlapping area 440 is not equal to its overlapping area with the second overlapping area 450. Likewise, the overlapping area of ​​the third lens 530 with the second overlapping area 450 is not equal to its overlapping area with the third overlapping area 460. Understandably, the first lens 510, the second lens 520, and the third lens 530 are not centered on their respective sub-pixels. When the intensity of a certain spilled light is too high, the display panel will exhibit color shift within that viewing angle range. By adjusting the position of the first lens 510, the second lens 520, or the third lens 530, bringing the lens closer to a certain overlapping area, the lens can block and absorb the spilled light along its emission path, thus improving the color shift phenomenon.

[0068] A third aspect of this application discloses a method for manufacturing a display panel, comprising the following steps:

[0069] S1. Provide substrate 100.

[0070] S2. A pixel light-emitting layer 200, an encapsulation layer 300, a filter layer 400 and a light-modulating layer 500 are sequentially formed on the substrate 100 in a direction away from the substrate 100. The pixel light-emitting layer 200 includes at least a plurality of spaced sub-pixels.

[0071] S3, the filter layer 400 includes a first filter section 410, a second filter section 420 and a third filter section 430 arranged in an array, and the first filter section 410, the second filter section 420 and the third filter section 430 are disposed opposite to the sub-pixels.

[0072] S4. The filter layer 400 includes a first overlapping region 440, a second overlapping region 450, and a third overlapping region 460. The first overlapping region 440 is formed by extending the second filter portion 420 to the surface of the adjacent first filter portion 410. The second overlapping region 450 is formed by extending the third filter portion 430 to the surface of the adjacent second filter portion 420. The third overlapping region 460 is formed by extending the third filter portion 430 to the surface of the adjacent first filter portion 410.

[0073] S5. The light adjustment layer 500 includes a first lens 510, a second lens 520 and a third lens 530 arranged at intervals. The first lens 510 is arranged corresponding to the first filter part 410, the second lens 520 is arranged corresponding to the second filter part 420, and the third lens 530 is arranged corresponding to the third filter part 430.

[0074] S6. The overlapping area of ​​the first lens 510 and the first overlapping area 440 is not equal to the overlapping area of ​​the first lens 510 and the third overlapping area 460; and / or, the overlapping area of ​​the second lens 520 and the first overlapping area 440 is not equal to the overlapping area of ​​the second lens 520 and the second overlapping area 450; and / or, the overlapping area of ​​the third lens 530 and the second overlapping area 450 is not equal to the overlapping area of ​​the third lens 530 and the third overlapping area 460.

[0075] In this embodiment, the first filter 410, the second filter 420, and the third filter 430 are disposed opposite to the sub-pixels. The filter sections can transmit light within a fixed wavelength range, and the light emitted by the sub-pixels passes through the filter sections to display color. The first filter 410, the second filter 420, and the third filter 430 can transmit light of different wavelengths. A first overlapping region 440, a second overlapping region 450, and a third overlapping region 460 are formed on the filter layer 400. The first overlapping region 440 is formed by extending the second filter 420 to the surface of the adjacent first filter 410; the second overlapping region 450 is formed by extending the third filter 430 to the surface of the adjacent second filter 420; and the third overlapping region 460 is formed by extending the third filter 430 to the surface of the adjacent first filter 410. The overlapping regions are composed of two types of filter sections to limit the emission of overflowing light and ensure uniform light emission from the display panel.

[0076] In this configuration, the first overlapping region 440 is formed by the second filter portion 420 extending to the surface of the adjacent first filter portion 410 away from the substrate 100. The light beam emitted by the first sub-pixel passes through the first filter portion 410 and is absorbed by the second filter portion 420 in the first overlapping region 440. The light beam emitted by the second sub-pixel passes through the second filter portion 420 and is emitted as overflow light. The second overlapping region 450 is formed by the third filter portion 430 extending to the surface of the adjacent second filter portion 420 away from the substrate 100. The light beam emitted by the second sub-pixel passes through the second filter portion 420 and is emitted as overflow light. The light beam emitted by the third sub-pixel is absorbed by the third filter section 430 of the second overlapping region 450. After passing through the third filter section 430, the light beam emitted by the third sub-pixel is emitted by the third filter section 430 of the second overlapping region 450 to form overflow light. The third overlapping region 460 is the surface of the third filter section 430 extending to the side of the adjacent first filter section 410 away from the substrate 100. The light beam emitted by the third sub-pixel is emitted by the third filter section 430 of the third overlapping region 460 after passing through the third filter section 430, and the light beam emitted by the first sub-pixel is absorbed by the third filter section 430 of the third overlapping region 460 after passing through the first filter section 410.

[0077] The overlapping area of ​​the first lens 510 with the first overlapping area 440 is not equal to its overlapping area with the third overlapping area 460. Similarly, the overlapping area of ​​the second lens 520 with the first overlapping area 440 is not equal to its overlapping area with the second overlapping area 450. Likewise, the overlapping area of ​​the third lens 530 with the second overlapping area 450 is not equal to its overlapping area with the third overlapping area 460. Understandably, the first lens 510, the second lens 520, and the third lens 530 are not centered on their respective sub-pixels. When the intensity of a certain spilled light is too high, the display panel will exhibit color shift within that viewing angle range. By adjusting the position of the first lens 510, the second lens 520, or the third lens 530, bringing the lens closer to a certain overlapping area, the lens can block and absorb the spilled light along its emission path, thus improving the color shift phenomenon.

[0078] In some embodiments, the steps of forming the first filter portion 410, the second filter portion 420, and the third filter portion 430 include:

[0079] A first filter layer 400 is deposited on the side of the encapsulation layer 300 away from the substrate 100, and a plurality of isolated first filter sections 410 are formed by development and etching through a first mask.

[0080] A second filter layer 400 is deposited on the side of the encapsulation layer 300 away from the substrate 100. The second filter layer 400 covers the surface of the encapsulation layer 300 and the first filter portion 410. A second filter portion 420 and a first overlapping region 440 adjacent to the first filter portion 410 are formed by developing and etching with a second mask.

[0081] A third filter layer 400 is deposited on the side of the encapsulation layer 300 away from the substrate 100. The third filter layer 400 covers the surface of the encapsulation layer 300, the surface of the first filter portion 410, and the surface of the second filter portion 420. The third filter portion 430, the second overlapping region 450, and the third overlapping region 460 located between the second filter portion 420 and the first filter portion 410 are formed by developing and etching with a third mask.

[0082] In this embodiment, the first overlapping region 440 is formed by extending the second filter portion 420 to the surface of the adjacent first filter portion 410. The first filter portion 410 is formed first, and the second filter layer 400 is formed on the surface of the first filter portion, which facilitates the formation of the first overlapping region 440. The second overlapping region 450 is formed by extending the third filter portion 430 to the surface of the adjacent second filter portion 420. The second filter portion 420 is formed first, and the third filter layer 400 is formed on the surface of the second filter portion 420, which facilitates the formation of the second overlapping region 450. The third overlapping region 460 is formed by extending the third filter portion 430 to the surface of the adjacent first filter portion 410. The first filter portion 410 is formed first, and the third filter layer 400 is formed on the surface of the first filter portion 410, which facilitates the formation of the third overlapping region 460.

[0083] The above are merely preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: A substrate and a pixel light-emitting layer, an encapsulation layer, a filter layer, and a light-modulating layer are sequentially disposed along a direction away from the substrate; the pixel light-emitting layer includes at least a plurality of spaced sub-pixels; The filter layer includes a first filter, a second filter, and a third filter arranged in an array, with the first filter, the second filter, and the third filter disposed opposite to the sub-pixel; the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The filter layer includes a first overlapping region, a second overlapping region, and a third overlapping region. The first overlapping region is formed by the second filter portion extending to the surface of the adjacent first filter portion. The second overlapping region is formed by the third filter portion extending to the surface of the adjacent second filter portion. The third overlapping region is formed by the third filter portion extending to the surface of the adjacent first filter portion. The light adjustment layer includes a first lens, a second lens, and a third lens arranged at intervals. The first lens is arranged corresponding to the first filter, the second lens is arranged corresponding to the second filter, and the third lens is arranged corresponding to the third filter. The overlapping area of ​​the first lens and the first overlapping area is greater than the overlapping area of ​​the first lens and the third overlapping area. The overlapping area of ​​the second lens and the first overlapping area is equal to the overlapping area of ​​the second lens and the second overlapping area. The overlapping area of ​​the third lens and the second overlapping area is equal to the overlapping area of ​​the third lens and the third overlapping area.

2. A display panel, characterized in that, include: A substrate and a pixel light-emitting layer, an encapsulation layer, a filter layer, and a light-modulating layer are sequentially disposed along a direction away from the substrate; the pixel light-emitting layer includes at least a plurality of spaced sub-pixels; The filter layer includes a first filter, a second filter, and a third filter arranged in an array, with the first filter, the second filter, and the third filter disposed opposite to the sub-pixel; the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The filter layer includes a first overlapping region, a second overlapping region, and a third overlapping region. The first overlapping region is formed by the second filter portion extending to the surface of the adjacent first filter portion. The second overlapping region is formed by the third filter portion extending to the surface of the adjacent second filter portion. The third overlapping region is formed by the third filter portion extending to the surface of the adjacent first filter portion. The light adjustment layer includes a first lens, a second lens, and a third lens arranged at intervals. The first lens is arranged corresponding to the first filter, the second lens is arranged corresponding to the second filter, and the third lens is arranged corresponding to the third filter. The overlapping area of ​​the first lens and the third overlapping area is greater than the overlapping area of ​​the first lens and the first overlapping area, the overlapping area of ​​the second lens and the second overlapping area is greater than the overlapping area of ​​the second lens and the first overlapping area, and the overlapping area of ​​the third lens and the second overlapping area is equal to the overlapping area of ​​the third lens and the third overlapping area.

3. The display panel according to claim 2, characterized in that, The distance between the second lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers; the distance between the first lens and the second lens ranges from 0.6 micrometers to 1.1 micrometers; and the distance between the first lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers.

4. The display panel according to claim 2, characterized in that, The distance between the second lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers; the distance between the first lens and the second lens ranges from 0.5 micrometers to 0.6 micrometers; and the distance between the first lens and the third lens ranges from 0.35 micrometers to 0.5 micrometers.

5. The display panel according to any one of claims 2-4, characterized in that, The first lens, the second lens, and the third lens are all hemispherical.

6. A display panel, characterized in that, include: A substrate and a pixel light-emitting layer, an encapsulation layer, a filter layer, and a light-modulating layer are sequentially disposed along a direction away from the substrate; the pixel light-emitting layer includes at least a plurality of spaced sub-pixels; The filter layer includes a first filter, a second filter, and a third filter arranged in an array, with the first filter, the second filter, and the third filter disposed opposite to the sub-pixel; the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The filter layer includes a first overlapping region, a second overlapping region, and a third overlapping region. The first overlapping region is formed by the second filter portion extending to the surface of the adjacent first filter portion. The second overlapping region is formed by the third filter portion extending to the surface of the adjacent second filter portion. The third overlapping region is formed by the third filter portion extending to the surface of the adjacent first filter portion. The light adjustment layer includes a first lens, a second lens, and a third lens arranged at intervals. The first lens is arranged corresponding to the first filter, the second lens is arranged corresponding to the second filter, and the third lens is arranged corresponding to the third filter. The overlapping area of ​​the first lens and the first overlapping area is greater than the overlapping area of ​​the first lens and the third overlapping area; the overlapping area of ​​the second lens and the second overlapping area is greater than the overlapping area of ​​the second lens and the first lens; the overlapping area of ​​the third lens and the third overlapping area is greater than the overlapping area of ​​the third lens and the second overlapping area.

7. A display device, characterized in that, The display device includes the display panel according to any one of claims 1-6.

8. A method for manufacturing a display panel, characterized in that, Includes the following steps: Provide substrate; A pixel light-emitting layer, an encapsulation layer, a filter layer, and a light-modulating layer are sequentially formed on the substrate in a direction away from the substrate, wherein the pixel light-emitting layer includes at least a plurality of spaced sub-pixels; The filter layer includes a first filter, a second filter, and a third filter arranged in an array, with the first filter, the second filter, and the third filter disposed opposite to the sub-pixel; the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The filter layer includes a first overlapping region, a second overlapping region, and a third overlapping region. The first overlapping region is formed by the second filter portion extending to the surface of the adjacent first filter portion. The second overlapping region is formed by the third filter portion extending to the surface of the adjacent second filter portion. The third overlapping region is formed by the third filter portion extending to the surface of the adjacent first filter portion. The light adjustment layer includes a first lens, a second lens, and a third lens arranged at intervals. The first lens is arranged corresponding to the first filter, the second lens is arranged corresponding to the second filter, and the third lens is arranged corresponding to the third filter. The overlapping area of ​​the first lens and the first overlapping area is greater than the overlapping area of ​​the first lens and the third overlapping area; the overlapping area of ​​the second lens and the first overlapping area is equal to the overlapping area of ​​the second lens and the second overlapping area; and the overlapping area of ​​the third lens and the second overlapping area is equal to the overlapping area of ​​the third lens and the third overlapping area. Alternatively, the overlapping area of ​​the first lens and the third overlapping area is greater than the overlapping area of ​​the first lens and the first overlapping area, the overlapping area of ​​the second lens and the second overlapping area is greater than the overlapping area of ​​the second lens and the first overlapping area, and the overlapping area of ​​the third lens and the second overlapping area is equal to the overlapping area of ​​the third lens and the third overlapping area; Alternatively, the overlapping area of ​​the first lens and the first overlapping area is greater than the overlapping area of ​​the first lens and the third overlapping area; the overlapping area of ​​the second lens and the second overlapping area is greater than the overlapping area of ​​the second lens and the first lens; and the overlapping area of ​​the third lens and the third overlapping area is greater than the overlapping area of ​​the third lens and the second overlapping area.

9. The method for manufacturing a display panel according to claim 8, characterized in that, The steps of forming the first filter, the second filter, and the third filter include: A first filter layer is deposited on the side of the encapsulation layer away from the substrate, and a plurality of isolated first filter sections are formed by development and etching using a first mask; A second filter layer is deposited on the side of the encapsulation layer away from the substrate. The second filter layer covers the surface of the encapsulation layer and the first filter portion. The second filter portion adjacent to the first filter portion and the first overlapping area are formed by developing and etching with a second mask. A third filter layer is deposited on the side of the encapsulation layer away from the substrate. The third filter layer covers the surface of the encapsulation layer, the surface of the first filter portion, and the surface of the second filter portion. The third filter portion, the second overlapping region, and the third overlapping region are formed by developing and etching with a third mask.

Images