Display panel and display device

Abstract

Disclosed is a display panel and a display device comprising a stacked light-emitting layer and an optical functional layer, the optical functional layer including a first microlens structure and a second microlens structure, the light-emitting layer including a first light-emitting subpixel and a second light-emitting subpixel, the first microlens structure and a center point of the first light-emitting subpixel having a first distance in a first direction, and the second microlens structure and a center point of the second light-emitting subpixel having a second distance in a second direction, the first direction and the second direction being different.

Description

[Technical field]

[0001] The present application relates to the field of displays, and in particular to display panels and display devices. [Background technology]

[0002] OLED (Organic Light-Emitting Diode) display devices have been attracting attention as a new next-generation display technology due to their advantages such as light weight, wide viewing angle, short response time, low temperature resistance, and high luminous efficiency.

[0003] In order to reduce the power consumption of OLED display panels, developers in this field have proposed a technical means based on the principle of geometric optics to provide an MLP (Micro Lens Pattern) in the OLED screen body, which concentrates the light dispersed and emitted from the OLED screen body directly above the screen body, thereby improving the efficiency of the OLED screen body and reducing the power consumption of the OLED panel. However, this technical means requires a one-to-one correspondence between the MLP structure and the pixels, and alignment errors cause problems such as poor viewing angle symmetry in the OLED display panel. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a display panel and a display device for improving the viewing angle symmetry of a conventional OLED display panel. [Means for solving the problem]

[0005] In a first aspect, the present application provides a method for producing a method for detecting a pulmonary circulation, comprising: A substrate; a light-emitting layer disposed on one side of the substrate and including a plurality of light-emitting sub-pixels; an optical function layer provided on a side of the light-emitting layer away from the substrate, the optical function layer including a plurality of microlens structures provided in one-to-one correspondence with the light-emitting sub-pixels; the plurality of microlens structures include a plurality of periodically arranged repeat units each including a first microlens structure and a second microlens structure, the plurality of light-emitting sub-pixels include a first light-emitting sub-pixel corresponding to the first microlens structure and a second light-emitting sub-pixel corresponding to the second microlens structure; a first distance between a center point of the first microlens structure and a center point of the first light-emitting subpixel in a first direction, and a second distance between a center point of the second microlens structure and a center point of the second light-emitting subpixel in a second direction, the first direction being different from the second direction; A display panel is provided.

[0006] In the display panel provided by the present application, the first direction and the second direction are opposite to each other, The first interval and the second interval are the same.

[0007] In the display panel provided by the present application, the repeat unit further includes a third microlens structure, and the plurality of light-emitting sub-pixels further include a third light-emitting sub-pixel corresponding to the third microlens structure; The center point of the third microlens structure and the center point of the third light-emitting sub-pixel have a third distance in a third direction, and the first direction, the second direction, and the third direction are all different from each other.

[0008] In a display panel provided by the present application, the first direction, the second direction, and the third direction are provided in this order at intervals of 120°; The first interval, the second interval, and the third interval are all the same.

[0009] In the display panel provided by the present application, the repeat unit further includes a fourth microlens structure, and the plurality of light-emitting sub-pixels further include a fourth light-emitting sub-pixel corresponding to the fourth microlens structure; The center point of the fourth microlens structure and the center point of the fourth light-emitting sub-pixel have a fourth distance in a fourth direction, and the first direction, the second direction, the third direction, and the fourth direction are all different from each other.

[0010] In a display panel provided by the present application, the first direction, the second direction, the third direction, and the fourth direction are provided in this order at intervals of 90°; The first interval, the second interval, the third interval, and the fourth interval are all the same.

[0011] In the display panel provided by the present application, the shape of the microlens structure and the shape of the corresponding light-emitting sub-pixel are the same, and the size of the microlens structure and the size of the corresponding light-emitting sub-pixel are the same. In the display panel provided by the present application, the first gap and the second gap are 5 μm or less.

[0012] In the display panel provided by the present application, the plurality of light-emitting subpixels include a plurality of red light-emitting subpixels, a plurality of green light-emitting subpixels, and a plurality of blue light-emitting subpixels, and the first spacing corresponding to the red light-emitting subpixels, the first spacing corresponding to the green light-emitting subpixels, and the first spacing corresponding to the blue light-emitting subpixels are all equal.

[0013] In the display panel provided by the present application, the plurality of light-emitting subpixels include a red light-emitting subpixel, a green light-emitting subpixel, and a blue light-emitting subpixel, and the first spacing corresponding to the red light-emitting subpixels is smaller than the first spacing corresponding to the green light-emitting subpixels and larger than the first spacing corresponding to the blue light-emitting subpixels.

[0014] In the display panel provided by the present application, the first spacing corresponding to the red light-emitting subpixels is greater than 1 μm and less than or equal to 3 μm, the first spacing corresponding to the blue light-emitting subpixels is greater than 0 μm and less than or equal to 2 μm, and the first spacing corresponding to the green light-emitting subpixels is greater than 2 μm and less than or equal to 5 μm.

[0015] In the display panel provided by the present application, the shape of the microlens structure and the shape of the corresponding light-emitting sub-pixel are the same, and the size of the microlens structure is larger than the size of the corresponding light-emitting sub-pixel.

[0016] The present application provides a display panel, the display panel comprising: a pixel defining layer disposed between the substrate and the light emitting layer, the pixel defining layer including a plurality of first openings corresponding to the light emitting subpixels; The optical functional layer includes a first refractive index layer provided on a side of the light emitting layer away from the substrate, and a second refractive index layer provided on a side of the first refractive index layer away from the substrate, the first refractive index layer including a plurality of second openings corresponding to the microlens structure, and having a smaller refractive index than the second refractive index layer.

[0017] In a second aspect, the present application provides a liquid crystal display device comprising: a substrate; a light emitting layer provided on one side of the substrate, the light emitting layer including a plurality of light emitting subpixels; and an optical function layer provided on a side of the light emitting layer away from the substrate, the light emitting subpixels including a plurality of microlens structures provided in one-to-one correspondence with the light emitting subpixels, the plurality of microlens structures including a plurality of periodically arranged repeating units each including a first microlens structure and a second microlens structure, the plurality of light emitting subpixels including a first light emitting subpixel corresponding to the first microlens structure and a second light emitting subpixel corresponding to the second microlens structure, a first interval is provided between a center point of the first microlens structure and a center point of the first light emitting subpixel in a first direction, a second interval is provided between a center point of the second microlens structure and a center point of the second light emitting subpixel in a second direction, the first direction and the second direction are different. There is further provided a display device comprising a display panel.

[0018] In the display device provided by the present application, the first direction and the second direction are opposite directions, The first interval and the second interval are the same.

[0019] In the display device provided by the present application, the repeat unit further includes a third microlens structure, and the plurality of light-emitting sub-pixels further include a third light-emitting sub-pixel corresponding to the third microlens structure; The center point of the third microlens structure and the center point of the third light-emitting sub-pixel have a third distance in a third direction, and the first direction, the second direction, and the third direction are all different from each other.

[0020] In the display device provided by the present application, the first direction, the second direction, and the third direction are provided in this order at intervals of 120°; The first interval, the second interval, and the third interval are all the same.

[0021] In the display device provided by the present application, the repeat unit further includes a fourth microlens structure, and the plurality of light-emitting sub-pixels further include a fourth light-emitting sub-pixel corresponding to the fourth microlens structure; The center point of the fourth microlens structure and the center point of the fourth light-emitting sub-pixel have a fourth distance in a fourth direction, and the first direction, the second direction, the third direction, and the fourth direction are all different from each other.

[0022] In the display device provided by the present application, the first direction, the second direction, the third direction, and the fourth direction are provided in this order at intervals of 90°; The first interval, the second interval, the third interval, and the fourth interval are all the same.

[0023] In the display device provided by the present application, the shape of the microlens structure and the shape of the corresponding light-emitting sub-pixel are the same, and the size of the microlens structure and the size of the corresponding light-emitting sub-pixel are the same. Effect of the Invention

[0024] Compared with the prior art, in the present application, a first microlens structure in a display panel is arranged so as to be offset with respect to the center of a corresponding first light-emitting sub-pixel, and a second microlens structure is arranged so as to be offset with respect to the center of a corresponding second child light-emitting pixel, and since the two offset directions are different, the problem in the conventional display panel that all microlens structures are offset in the same direction with respect to the corresponding light-emitting sub-pixel is solved to a certain extent, thereby alleviating the problem of symmetry of the viewing angle of the display panel. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic plan view diagram of light-emitting sub-pixels of the same color and corresponding microlens structures of a display panel in an ideal state. [Diagram 2] 2 is a schematic cross-sectional view of the structure taken along the line AA′ in FIG. 1. [Diagram 3] FIG. 2 is a schematic plan view diagram of light-emitting sub-pixels of the same color and corresponding microlens structures of a display panel provided by the prior art; [Figure 4] 4 is a schematic cross-sectional view of the structure taken along the line BB' in FIG. [Diagram 5] 1 is a graph showing the result of viewing angle symmetry of a display panel provided by the prior art; [Figure 6] FIG. 2 is a plan view schematic diagram of a first stack of same-color light-emitting subpixels and corresponding microlens structures of a display panel provided according to an embodiment of the present application. [Figure 7] 7 is a schematic plan view of a stack when an alignment error occurs in the microlens structure in FIG. 6. FIG. [Figure 8] FIG. 2 is a schematic plan view diagram of a second stack of same-color light-emitting subpixels and corresponding microlens structures of a display panel provided according to an embodiment of the present application. [Figure 9] 9 is a schematic plan view of a stack when an alignment error occurs in the microlens structure in FIG. 8. FIG. [Figure 10] FIG. 2 is a schematic plan view diagram of same-color light-emitting subpixels and corresponding third stacks of microlens structures of a display panel provided according to an embodiment of the present application. [Figure 11] 11 is a schematic plan view of a stack when an alignment error occurs in the microlens structure in FIG. 10. FIG. [Figure 12] FIG. 2 is a schematic cross-sectional view of a display panel provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Next, the technical means in the embodiments and / or examples of the present application will be clearly and comprehensively described with reference to specific embodiments of the present application, but of course, the embodiments and / or examples described below are only some of the embodiments and / or examples of the present application, and are not all of the embodiments and / or examples. Any other embodiments and / or examples that a person skilled in the art can obtain based on the embodiments and / or examples of the present application without creative labor are all included in the protection scope of the present application.

[0027] In this application, directional terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "side", etc. are merely directional terms with reference to the accompanying drawings. Thus, the directional terms used are not intended to limit the present application, but are for the purpose of explanation and understanding of the present application. Terms such as "first", "second", etc. are merely for the purpose of explanation, and should not be understood to designate or imply a relative importance or to imply a number of technical features. Thus, a feature qualified with "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0028] Please refer to FIG. 1. FIG. 1 is a plan view structural schematic diagram of the same-color light-emitting subpixels of a display panel in an ideal state and the corresponding microlens structures, specifically, a plan view structural schematic diagram of the same-color subpixels and the corresponding microlens structures in a diamond array of pixels. FIG. 2 is a cross-sectional structural schematic diagram of the AA' direction in FIG. 1. In an ideal state, the display panel mainly includes a substrate 1, a light-emitting layer 2, a pixel definition layer 3, a package layer 4, an optical function layer 5, and a cover plate 6, which are stacked in this order. The substrate 1 includes a film transistor circuit. The light-emitting layer 2 includes a plurality of light-emitting subpixels 11. The pixel definition layer 3 is provided between the substrate 1 and the light-emitting layer 2, and includes a plurality of first openings 31 corresponding to the light-emitting subpixels 11. The optical function layer 5 includes a touch layer 51, a first refractive index layer 52, a second refractive index layer 53, and a polarizer 54, which are stacked from the bottom. The first refractive index layer 52 has a smaller refractive index than the second refractive index layer 53. The first refractive index layer 52 is provided with second openings 55 that correspond one-to-one to the light-emitting subpixels 11. Orthogonal projection of the second openings 55 onto the substrate 1 overlaps with projection of the light-emitting subpixels 11 onto the substrate 1. The first refractive index layer 52 and the second refractive index layer 53 at the second openings 55 form a microlens structure 12. Light emitted from the light-emitting subpixels 11 is concentrated on the microlens structure 12, thereby improving the amount of light extraction at a normal viewing angle of the display panel and enhancing the light extraction efficiency of the display panel.

[0029] However, since the first refractive index layer 52 inevitably has a certain degree of alignment error during manufacturing, there is a misalignment between the microlens structure 12 and the light-emitting subpixel. Referring to FIG. 3 and FIG. 4, FIG. 3 is a plan view structural schematic diagram of the same-color light-emitting subpixels and the corresponding microlens structures of a display panel provided by the prior art, specifically, FIG. 3(a) is a plan view structural schematic diagram when an alignment error occurs upward during manufacturing of the microlens structure, FIG. 3(b) is a plan view structural schematic diagram when an alignment error occurs downward during manufacturing of the microlens structure, FIG. 3(c) is a plan view structural schematic diagram when an alignment error occurs leftward during manufacturing of the microlens structure, and FIG. 3(d) is a plan view structural schematic diagram when an alignment error occurs rightward during manufacturing of the microlens structure. FIG. 4 is a cross-sectional structural schematic diagram of the BB' direction in FIG. 3. As can be seen from FIG. 3, if an alignment error occurs during the manufacturing of the first refractive index layer 52, all of the microlens structures 12 will be misaligned in the same direction relative to the light-emitting sub-pixels 11, regardless of the direction. In this case, the symmetry of the viewing angle of the display panel will be deteriorated. Referring to FIG. 5, FIG. 5 is a result graph of the symmetry of the viewing angle of a display panel provided by the prior art. As can be seen from FIG. 5, the conventional display panel has different luminance of the display panel even when observed at symmetrical viewing angles, and there is a problem of the symmetry of the viewing angle.

[0030] The present application provides a display panel that can solve or alleviate the above problems that exist in the prior art.

[0031] The present application relates to a display device comprising: a substrate; a light-emitting layer provided on one side of the substrate and including a plurality of light-emitting subpixels; and an optical function layer provided on a side of the light-emitting layer away from the substrate and including a plurality of microlens structures provided in one-to-one correspondence with the light-emitting subpixels, wherein the plurality of microlens structures include a plurality of periodically arranged repeating units each including a first microlens structure and a second microlens structure, the plurality of light-emitting subpixels include a first light-emitting subpixel corresponding to the first microlens structure and a second light-emitting subpixel corresponding to the second microlens structure, a first distance is provided between a center point of the first microlens structure and a center point of the first light-emitting subpixel in a first direction, a second distance is provided between a center point of the second microlens structure and a center point of the second light-emitting subpixel in a second direction, and the first direction and the second direction are different. A display panel is provided.

[0032] According to an embodiment of the present application, the first microlens structure is arranged to be offset with respect to the center of the corresponding first light-emitting sub-pixel, and the second microlens structure is arranged to be offset with respect to the center of the corresponding second child light-emitting pixel, and the two offset directions are different, which to some extent solves the problem in conventional display panels that all microlens structures are offset in the same direction with respect to the corresponding light-emitting sub-pixel, thereby alleviating the problem of symmetry of the viewing angle of the display panel.

[0033] The display panel provided by the present application will now be described in detail with reference to specific examples. In particular, the microlens structure of the display panel will be described in detail. In the display panel, the light-emitting sub-pixels generally include red, green and blue light-emitting sub-pixels, and the arrangement of the microlens structure is the same regardless of the color of the corresponding light-emitting sub-pixels. Therefore, for clarity, the following description will be given by taking the same color light-emitting sub-pixels (blue light-emitting sub-pixels) as an example to describe the lens structure. EXAMPLES

[0034] 6, which is a schematic plan view diagram of a first stack of same-color light-emitting subpixels and corresponding microlens structures of a display panel provided by an embodiment of the present application. In the embodiment of the present application, the shape of the microlens structure 12 is the same as the shape of the corresponding light-emitting subpixel 11, and the size of the microlens structure 12 is the same as the size of the corresponding light-emitting subpixel 11.

[0035] One repeating unit 10 includes two microlens structures 12, a first microlens structure 121 and a second microlens structure 122. The light-emitting subpixels 11 include a first light-emitting subpixel 111 corresponding to the first microlens structure 121 and a second light-emitting subpixel 112 corresponding to the second microlens structure 122.

[0036] The center point O of the first microlens structure 121 21 and the center point O of the first light-emitting sub-pixel 111. 11 is the first direction O 21 O 11 and a center point O of the second microlens structure 122. 22 and the center point O of the second light-emitting sub-pixel 112 12 is the second direction O 22 O 12 and a second distance d2 in the first direction O 21 O 11 and the second direction O 22 O 12 and the first distance d1 and the second distance d2 are equal.

[0037] The first direction O shown in FIG. 21 O 11 is the upper right direction, and the second direction O 22 O 12 is the lower left direction. In other embodiments of the present application, for example, the first direction may be the lower right direction and the second direction may be the upper left direction. This is not limited here.

[0038] In this manner, the first microlens structure 121 is aligned with the first light-emitting sub-pixel 111 in the first direction O 21 O 11 The first microlens structure 121 focuses the light from the first light-emitting sub-pixel 111 in the first direction O. 21 O 11 and the second direction O 22 O 12 In addition, the second microlens structure 122 is weak in the second direction O with respect to the second light-emitting subpixel 112. 22 O 12 The second microlens structure 122 focuses the light from the second light-emitting sub-pixel 112 in the second direction O. 22 O 12 and the first direction O 21 O 11 It becomes weaker in

[0039] Since the first distance d1 is equal to the second distance d2, the first microlens structure 121 focuses the light from the first light-emitting sub-pixel 111 in the first direction O. 21 O 11 and the focusing effect of the second microlens structure 122 on the light from the second light-emitting sub-pixel 112 in the second direction O 22 O 12 In addition, the focusing effect of the second microlens structure 122 on the light from the second light-emitting sub-pixel 112 is the same as the focusing effect in the first direction O. 21 O 11 and the first microlens structure 121 has a focusing effect on the light from the first light-emitting sub-pixel 111 in the second direction O. 22 O 12 Finally, the effect of weakening the first direction O of the display panel is the same. 21 O 11 and the second direction O 22 O 12In the other direction, the first microlens structure 121 overlaps with the first light-emitting sub-pixel 111, and the second microlens structure 122 overlaps with the second light-emitting sub-pixel 112, so that the display panel is visually symmetrical.

[0040] FIG. 7 is a schematic plan view of a stack when an alignment error occurs during the manufacture of the first refractive index layer 52. FIG. 7 is a schematic plan view of a stack when an alignment error occurs in the microlens structure in FIG. 6. Specifically, FIG. 7(a) is a schematic plan view of a stack when an alignment error occurs in the microlens structure in an upward direction, FIG. 7(b) is a schematic plan view of a stack when an alignment error occurs in the microlens structure in a downward direction, FIG. 7(c) is a schematic plan view of a stack when an alignment error occurs in the microlens structure in a leftward direction, and FIG. 7(d) is a schematic plan view of a stack when an alignment error occurs in the microlens structure in a rightward direction.

[0041] As shown in (a) of Figure 7, when an alignment error occurs upward during the manufacture of the first refractive index layer 52, in one repeating unit 10, there is one microlens structure 12, and its center point and the center point of the corresponding light-emitting subpixel 11 are on the same horizontal line, that is, the concentrating effect of the microlens structure 12 on the light rays from the light-emitting subpixel 11 are symmetrical to each other in the vertical direction, thereby improving the viewing angle symmetry of the display panel in the vertical direction by about 50%.

[0042] As shown in (b) of Figure 7, when a downward alignment error occurs during the manufacture of the first refractive index layer 52, in one repeating unit 10, there is one microlens structure 12, and its center point and the center point of the corresponding light-emitting subpixel 11 are on the same horizontal line, that is, the concentrating effect of the microlens structure 12 on the light rays from the light-emitting subpixel 11 are symmetrical to each other in the vertical direction, thereby improving the viewing angle symmetry of the display panel in the vertical direction by about 50%.

[0043] As shown in (c) of Figure 7, when an alignment error occurs to the left during the manufacture of the first refractive index layer 52, there is one microlens structure 12 in one repeating unit 10, and its center point and the center point of the corresponding light-emitting subpixel 11 are on the same vertical line, that is, the concentrating effect of the microlens structure 12 on the light rays from the light-emitting subpixel 11 are symmetrical to each other in the left-right direction, thereby improving the viewing angle symmetry of the display panel in the left-right direction by about 50%.

[0044] As shown in (d) of Figure 7, when an alignment error occurs to the right during the manufacture of the first refractive index layer 52, there is one microlens structure 12 in one repeating unit 10, and its center point and the center point of the corresponding light-emitting subpixel 11 are on the same vertical line, that is, the concentrating effect of the microlens structure 12 on the light rays from the light-emitting subpixel 11 are symmetrical to each other in the left-right direction, thereby improving the viewing angle symmetry of the display panel in the left-right direction by about 50%.

[0045] The light-emitting subpixels of the display panel include red, green, and blue light-emitting subpixels, and may further include a white light-emitting subpixel. The microlens structures corresponding to the red, green, and blue light-emitting subpixels are arranged in a manner similar to that of the microlens structure 12.

[0046] In one embodiment, the first spacing between the red light-emitting subpixel and the corresponding microlens structure, the first spacing between the green light-emitting subpixel and the corresponding microlens structure, and the first spacing between the blue light-emitting subpixel and the corresponding microlens structure are all equal. The first spacings are 4 μm or less. When an alignment error occurs, the first spacing and the second spacing after the shift are 5 μm or less.

[0047] In another embodiment, the first spacing between the red-emitting subpixel and the corresponding microlens structure is larger than the first spacing between the green-emitting subpixel and the corresponding microlens structure and smaller than the first spacing between the blue-emitting subpixel and the corresponding microlens structure. Specifically, the first spacing between the red-emitting subpixel and the corresponding microlens structure is greater than 1 μm and less than or equal to 2 μm, the first spacing between the green-emitting subpixel and the corresponding microlens structure is less than or equal to 1 μm, and the first spacing between the blue-emitting subpixel and the corresponding microlens structure is greater than 2 μm and less than or equal to 4 μm. When an alignment error occurs, the first spacing between the red-emitting subpixel and the corresponding microlens structure after the shift is greater than 0 and less than or equal to 3 μm, the first spacing between the green-emitting subpixel and the corresponding microlens structure is less than or equal to 2 μm, and the first spacing between the blue-emitting subpixel and the corresponding microlens structure is greater than 1 μm and less than or equal to 5 μm.

[0048] Based on this embodiment, the repeating unit may further include one or more third microlens structures, and the light-emitting sub-pixel includes a third light-emitting sub-pixel corresponding to the third microlens structure, and a center point of the third microlens structure overlaps with a center point of the third light-emitting sub-pixel. EXAMPLES

[0049] 8, which is a plan view schematic diagram of a second stack of the same-color light-emitting subpixels and corresponding microlens structures of a display panel provided by an embodiment of the present application. The same parts of this embodiment as those of embodiment 1 are referred to and will not be described repeatedly. This embodiment differs from embodiment 1 in the following respects. One repeat unit 10 includes three microlens structures 12, including a first microlens structure 121, a second microlens structure 122, and a third microlens structure 123. The plurality of light-emitting subpixels 11 include a first light-emitting subpixel 111 corresponding to the first microlens structure 121, a second light-emitting subpixel 112 corresponding to the second microlens structure 122, and a third light-emitting subpixel 113 corresponding to the third microlens structure 123.

[0050] The center point O of the first microlens structure 121 21 and the center point O of the first light-emitting sub-pixel 111. 11 The first direction is O 21 O 11 and a center point O of the second microlens structure 122. 22 and the center point O of the second light-emitting sub-pixel 112 12 and the second direction O 22 O 12 and a center point O of the third microlens structure 123. 23 and the center point O of the third light-emitting sub-pixel 113 13 The third direction is 23 O 13 In the first direction O 21 O 11 , the second direction O 22 O 12 , the third direction O 23 O 13 are spaced apart from each other by 120° in this order. The first distance d1, the second distance d2, and the third distance d3 are all equal.

[0051] The first direction O shown in FIG. 21 O 11 is a vertically upward direction, and the second direction O 22 O12 is the lower right direction, and the third direction O 23 O 13 is the lower left direction. In other embodiments of the present application, other directions may be used, but are not limited here.

[0052] Similarly, the first direction O 21 O 11 , the second direction O 22 O 12 , the third direction O 23 O 13 are spaced apart by 120° in this order, so that the first distance d1, the second distance d2, and the third distance d3 are all equal, and due to the cooperative action of the three microlens structures 12 in one repeating unit 10 on the three corresponding light-emitting sub-pixels 11, the visual effects of the display panel in any two opposite directions are symmetrical to each other. For specific principles, please refer to Example 1.

[0053] In the case where an alignment error occurs during the manufacture of the first refractive index layer 52, refer to FIG. 9, which is a schematic plan view of a stack when an alignment error occurs in the microlens structure in FIG.

[0054] 9(a), which is a schematic plan view of a stack when an alignment error occurs in the microlens structure in the upward direction. When an alignment error occurs in the manufacturing process of the first refractive index layer 52 in the upward direction, there are two microlens structures 12 in one repeat unit 10, and the centers of the two microlens structures 12 and the centers of the corresponding light-emitting subpixels 11 are on the same horizontal line, that is, the focusing effects of the microlens structures 12 on the light rays from the light-emitting subpixels 11 are symmetrical to each other in the vertical direction, and thus the symmetry of the viewing angle in the vertical direction of the display panel is improved by about 67%.

[0055] 9(b), which is a schematic plan view of a stack when a downward alignment error occurs in the microlens structure. When a downward alignment error occurs during the manufacture of the first refractive index layer 52, one of the repeating units 10 has one of the microlens structures 12, whose center overlaps with that of the corresponding light-emitting subpixel 11. That is, the focusing action of the microlens structure 12 on the light from the light-emitting subpixel 11 is symmetrical in the vertical direction, and thus the symmetry of the viewing angle in the vertical direction of the display panel is improved by about 33%.

[0056] 9(c), which is a schematic plan view of a stack when an alignment error occurs in the microlens structure to the left during the manufacture of the first refractive index layer 52. When an alignment error occurs to the left during the manufacture of the first refractive index layer 52, one of the repeating units 10 has one microlens structure 12, whose center point and the center point of the corresponding light-emitting subpixel 11 are on the same vertical line, that is, the focusing action of the microlens structure 12 on the light rays from the light-emitting subpixel 11 are symmetrical to each other in the left-right direction, and thus the symmetry of the viewing angle in the left-right direction of the display panel is improved by about 33%.

[0057] 9(d), which is a plan view schematic diagram of a stack when an alignment error occurs in the microlens structure to the right during the manufacture of the first refractive index layer 52. When an alignment error occurs to the right during the manufacture of the first refractive index layer 52, one of the repeating units 10 has one of the microlens structures 12, whose center point and the center point of the corresponding light-emitting subpixel 11 are on the same vertical line, that is, the focusing action of the microlens structure 12 on the light rays from the light-emitting subpixel 11 are symmetrical to each other in the left-right direction, and thus the symmetry of the viewing angle in the left-right direction of the display panel is improved by about 33%. EXAMPLES

[0058] 10, which is a plan view schematic diagram of a third stack of the same-color light-emitting subpixels and the corresponding microlens structures of a display panel provided by an embodiment of the present application. The same parts of this embodiment as those of embodiment 1 are referred to and will not be described repeatedly. This embodiment differs from embodiment 1 in the following respects. One repeating unit 10 is composed of four microlens structures 12, including a first microlens structure 121, a second microlens structure 122, a third microlens structure 123, and a fourth microlens structure. The plurality of light-emitting subpixels 11 include a first light-emitting subpixel 111 corresponding to the first microlens structure 121, a second light-emitting subpixel 112 corresponding to the second microlens structure 122, a third light-emitting subpixel 113 corresponding to the third microlens structure 123, and a fourth light-emitting subpixel 114 corresponding to the fourth microlens structure 124.

[0059] The center point O of the first microlens structure 121 21 and the center point O of the first light-emitting sub-pixel 111. 11 The first direction is O 21 O 11 and a center point O of the second microlens structure 122. 22 and the center point O of the second light-emitting sub-pixel 112 12 and the second direction O 22 O 12 and a center point O of the third microlens structure 123. 23 and the center point O of the third light-emitting sub-pixel 113 13 The third direction is 23 O 13 and a third interval d3 at the center point O 24 and the center point O of the fourth light-emitting sub-pixel 114 14 The fourth direction is 24 O 14 In the first direction O 21 O 11 , the second direction O 22 O 12 , the third direction O 23 O 13, the fourth direction O 24 O 14 are spaced apart by 90° in this order. The first interval d1, the second interval d2, the third interval d3, and the fourth interval d4 are all equal.

[0060] The first direction O shown in FIG. 21 O 11 is the upper left direction, and the second direction O 22 O 12 is the upper right direction, and the third direction O 23 O 13 is the lower right direction, and the fourth direction O 24 O 14 is the lower left direction. In other embodiments of the present application, other directions may be used, but are not limited here.

[0061] Similarly, the first direction O 21 O 11 , the second direction O 22 O 12 , the third direction O 23 O 13 , the fourth direction O 24 O 14 are spaced apart by 90° in this order, so that the first interval d1, the second interval d2, and the fourth interval d4 are all equal. Due to the cooperation between the four microlens structures 12 in one repeating unit 10 and the four corresponding light-emitting sub-pixels 11, the visual effects of the display panel in any two opposite directions are symmetrical to each other. For a specific principle, please refer to Example 1.

[0062] In the case where an alignment error occurs during the manufacture of the first refractive index layer 52, refer to FIG. 11, which is a plan view schematic diagram of a stack when an alignment error occurs in the microlens structure in FIG.

[0063] As shown in Fig. 11(a), Fig. 11(a) is a schematic plan view of a stack when an alignment error occurs in the microlens structure in the upward direction. When an alignment error occurs in the upward direction during the manufacture of the first refractive index layer 52, there are two microlens structures 12 in one repeat unit 10, and their centers and the centers of the corresponding light-emitting subpixels 11 are on the same horizontal line, that is, the focusing effects of the microlens structures 12 on the light rays from the light-emitting subpixels 11 are symmetrical to each other in the vertical direction, and thus the symmetry of the viewing angle in the vertical direction of the display panel is improved by about 50%.

[0064] As shown in Fig. 11(b), Fig. 11(b) is a schematic plan view of a stack when a downward alignment error occurs in the microlens structure. When a downward alignment error occurs during the manufacture of the first refractive index layer 52, there are two microlens structures 12 in one repeat unit 10, and their centers and the centers of the corresponding light-emitting subpixels 11 are on the same horizontal line, that is, the focusing effects of the microlens structures 12 on the light rays from the light-emitting subpixels 11 are symmetrical to each other in the vertical direction, and thus the symmetry of the viewing angle in the vertical direction of the display panel is improved by about 50%.

[0065] As shown in Fig. 11(c), Fig. 11(c) is a plan view schematic diagram of a stack when an alignment error occurs in the microlens structure to the left. When an alignment error occurs to the left during the manufacture of the first refractive index layer 52, two microlens structures 12 are present in one repeat unit 10, and their centers and the centers of the corresponding light-emitting subpixels 11 are on the same vertical line, that is, the focusing effects of the microlens structures 12 on the light rays from the light-emitting subpixels 11 are symmetrical to each other in the left-right direction, and thus the symmetry of the viewing angle in the left-right direction of the display panel is improved by about 50%.

[0066] As shown in (d) of Fig. 11, (d) of Fig. 11 is a plan view schematic diagram of a stack when an alignment error occurs in the microlens structure to the right. When an alignment error occurs to the right during the manufacture of the first refractive index layer 52, two microlens structures 12 are present in one repeat unit 10, and their centers and the centers of the corresponding light-emitting subpixels 11 are on the same vertical line, that is, the focusing effects of the microlens structures 12 on the light rays from the light-emitting subpixels 11 are symmetrical to each other in the left-right direction, and thus the symmetry of the viewing angle in the left-right direction of the display panel is improved by about 50%.

[0067] Similarly, in other embodiments based on Examples 1 to 3, the repeat unit 10 may include five or more of the microlens structures 12. In addition, the distances between the center points of any two adjacent microlens structures 12 and the center points of the corresponding light-emitting subpixels 11 in the shift direction are equal, and the distances between the center points are equal. EXAMPLES

[0068] 12, which is a schematic plan view diagram of a fourth stack of same-color light-emitting subpixels and corresponding microlens structures of a display panel provided by an embodiment of the present application. In the embodiment of the present application, the shape of the microlens structure 12 is the same as the shape of the corresponding light-emitting subpixel 11, the size of the microlens structure 12 is larger than the size of the corresponding light-emitting subpixel 11, and the orthogonal projection of the microlens structure 12 onto the substrate 1 covers the orthogonal projection of the corresponding light-emitting subpixel 11 onto the substrate 1.

[0069] One repeating unit 10 includes two microlens structures 12, a first microlens structure 121 and a second microlens structure 122. The light-emitting subpixels 11 include a first light-emitting subpixel 111 corresponding to the first microlens structure 121 and a second light-emitting subpixel 112 corresponding to the second microlens structure 122.

[0070] The center point O of the first microlens structure 121 21 and the center point O of the first light-emitting sub-pixel 111. 11 The first direction is O 21 O 11 The first microlens structure 121 has a first interval d1 in the first direction O, and the size of the first microlens structure 121 in the other direction is the same as the size of the first light-emitting sub-pixel 111. 21 O 11 The size of the second microlens structure 122 at the center point O 22 and the center point O of the second light-emitting sub-pixel 112 12 and the second direction O 22 O 12 The second microlens structure 122 has a second interval d2 in the second direction O. The size of the second microlens structure 122 in the other direction O is the same as the size of the second light-emitting subpixel 112. 22 O 12 The size in the first direction O 21 O 11 and the second direction O 22 O 12 and the first distance d1 and the second distance d2 are equal.

[0071] Similarly, the first direction O 21 O 11 and the second direction O 22 O 12 and the first distance d1 and the second distance d2 are equal, so that due to the cooperative action of the two microlens structures 12 in one repeating unit 10 on the two corresponding light-emitting sub-pixels 11, the visual effects of the display panel in any two opposite directions are symmetrical to each other. For specific principles, please refer to Example 1.

[0072] In one embodiment, the first spacing between the red light-emitting subpixels and the corresponding microlens structures, the first spacing between the green light-emitting subpixels and the corresponding microlens structures, and the first spacing between the blue light-emitting subpixels and the corresponding microlens structures are all equal, and the first spacings are less than or equal to 4 μm.

[0073] In another embodiment, the first spacing between the red light-emitting subpixel and the corresponding microlens structure is greater than the first spacing between the green light-emitting subpixel and the corresponding microlens structure and less than the first spacing between the blue light-emitting subpixel and the corresponding microlens structure, Specifically, the first spacing between the red light-emitting subpixel and the corresponding microlens structure is greater than 1 μm and less than or equal to 2 μm, the first spacing between the green light-emitting subpixel and the corresponding microlens structure is less than or equal to 1 μm, and the first spacing between the blue light-emitting subpixel and the corresponding microlens structure is greater than 2 μm and less than or equal to 4 μm.

[0074] In other embodiments, the repeat unit 10 may include three, four, five, or more of the microlens structures 12. The center points of any two adjacent microlens structures 12 are equally spaced from the center points of the corresponding light-emitting subpixels 11 in the offset direction, and the distance between the center points is equally spaced. In other embodiments, the microlens structures 12 may extend to one side, both sides, or more directions relative to the corresponding light-emitting subpixels 11.

[0075] Correspondingly, an embodiment of the present application provides a display panel. Referring to FIG. 12, FIG. 12 is a cross-sectional structural schematic diagram of the display panel provided by the present application, specifically, a cross-sectional structural schematic diagram of the CC' direction in FIG. 11. The display panel includes a substrate 1, a light-emitting layer 2, a pixel definition layer 3, a package layer 4, an optical function layer 5, and a cover plate 6, which are stacked in this order. The light-emitting layer 2 includes a plurality of light-emitting subpixels 11. The pixel definition layer 3 is provided between the substrate 1 and the light-emitting layer 2, and includes a plurality of first openings 31 corresponding to the light-emitting subpixels 11. The optical function layer 5 includes a touch layer 51, a first refractive index layer 52, a second refractive index layer 53, and a polarizer 54, which are stacked from the bottom in this order. The first refractive index layer 52 has a smaller refractive index than the second refractive index layer 53. The first refractive index layer 52 is provided with a second opening 55 that corresponds one-to-one with the light-emitting subpixels 11. The orthogonal projection of the second opening 55 onto the substrate 1 partially overlaps with the orthogonal projection of the first opening 31 onto the substrate 1. The first refractive index layer 52 and the second refractive index layer 53 at the second opening 55 form a microlens structure 12.

[0076] An embodiment of the present application further provides a display device, comprising the display panel according to any of the embodiments of the present application.

[0077] In summary, the embodiments of the present application provide a display panel and a display device, in which a first microlens structure of the display panel is arranged to be offset with respect to a center of a corresponding first light-emitting sub-pixel, and a second microlens structure is arranged to be offset with respect to a center of a corresponding second child light-emitting pixel, and the two offset directions are different, which to some extent solves the problem in the conventional display panel that all the microlens structures are offset in the same direction with respect to the corresponding light-emitting sub-pixel, thereby mitigating the problem of symmetry of the viewing angle of the display panel.

[0078] The display panel and display device provided by the embodiments of the present application have been described in detail above. In this specification, the principles and embodiments of the present application have been described using specific examples, but the description of the above examples is merely intended to allow the reader to understand the method and gist of the present application. In addition, the specific embodiments and application scope can be modified by those skilled in the art based on the concept of the present application. In other words, the contents of this specification should not be understood as limitations on the present application. [Explanation of symbols]

[0079] 1 Board 2. Light-emitting layer 3 Pixel Definition Layer 4. Packaging Layer 5 Optical functional layer 6 Cover Plate 10 Repeat Units 11 Light-emitting subpixel 12 Microlens structure 31 First Opening 51 Touch Layer 52 First refractive index layer 53 Second refractive index layer 54 Polarizer 55 Second Opening 111 First light-emitting sub-pixel 112 Second light-emitting sub-pixel 113 Third light-emitting sub-pixel 114 4th light-emitting subpixel 121 First microlens structure 122 Second microlens structure 123 3rd microlens structure 124 4th microlens structure

Claims

1. A substrate; a light-emitting layer disposed on one side of the substrate and including a plurality of light-emitting sub-pixels; an optical function layer provided on a side of the light-emitting layer away from the substrate, the optical function layer including a plurality of microlens structures provided in one-to-one correspondence with the light-emitting sub-pixels; the plurality of microlens structures include a plurality of periodically arranged repeat units each including a first microlens structure and a second microlens structure, the plurality of light-emitting sub-pixels include a first light-emitting sub-pixel corresponding to the first microlens structure and a second light-emitting sub-pixel corresponding to the second microlens structure; a center point of the first microlens structure and a center point of the first light-emitting subpixel have a first distance in a first direction, and a center point of the second microlens structure and a center point of the second light-emitting subpixel have a second distance in a second direction, the first direction and the second direction being different; Display panel.

2. the first direction and the second direction are opposite directions, The display panel of claim 1 , wherein the first interval and the second interval are the same.

3. The repeat unit further includes a third microlens structure, and the plurality of light-emitting sub-pixels further include a third light-emitting sub-pixel corresponding to the third microlens structure; The display panel of claim 1 , wherein a center point of the third microlens structure and a center point of the third light-emitting sub-pixel have a third distance in a third direction, and the first direction, the second direction, and the third direction are all different.

4. The first direction, the second direction, and the third direction are provided in this order at intervals of 120°, The display panel of claim 3 , wherein the first interval, the second interval, and the third interval are all the same.

5. The repeat unit further includes a fourth microlens structure, and the plurality of light-emitting sub-pixels further include a fourth light-emitting sub-pixel corresponding to the fourth microlens structure; 4. The display panel of claim 3, wherein the center point of the fourth microlens structure and the center point of the fourth light-emitting subpixel have a fourth distance in a fourth direction, and the first direction, the second direction, the third direction, and the fourth direction are all different.

6. The first direction, the second direction, the third direction, and the fourth direction are provided in this order at intervals of 90°, The display panel of claim 5 , wherein the first interval, the second interval, the third interval, and the fourth interval are all the same.

7. The display panel of claim 1 , wherein the shape of the microlens structure is the same as the shape of the corresponding light-emitting subpixel, and the size of the microlens structure is the same as the size of the corresponding light-emitting subpixel.

8. The display panel according to claim 7 , wherein the first gap and the second gap are equal to or smaller than 5 μm.

9. 9. The display panel of claim 8, wherein the plurality of light-emitting subpixels include a plurality of red light-emitting subpixels, a plurality of green light-emitting subpixels, and a plurality of blue light-emitting subpixels, and the first spacing corresponding to the red light-emitting subpixels, the first spacing corresponding to the green light-emitting subpixels, and the first spacing corresponding to the blue light-emitting subpixels are all equal.

10. 9. The display panel of claim 8, wherein the plurality of light-emitting subpixels include a red light-emitting subpixel, a green light-emitting subpixel, and a blue light-emitting subpixel, and the first spacing corresponding to the red light-emitting subpixels is smaller than the first spacing corresponding to the green light-emitting subpixels and larger than the first spacing corresponding to the blue light-emitting subpixels.

11. 11. The display panel of claim 10, wherein the first spacing corresponding to the red light-emitting subpixels is greater than 1 μm and less than or equal to 3 μm, the first spacing corresponding to the blue light-emitting subpixels is greater than 0 μm and less than or equal to 2 μm, and the first spacing corresponding to the green light-emitting subpixels is greater than 2 μm and less than or equal to 5 μm.

12. The display panel of claim 1 , wherein the shape of the microlens structure is the same as the shape of the corresponding light-emitting subpixel, and the size of the microlens structure is larger than the size of the corresponding light-emitting subpixel.

13. a pixel defining layer disposed between the substrate and the light emitting layer, the pixel defining layer including a plurality of first openings corresponding to the light emitting subpixels; 2. The display panel of claim 1, wherein the optical functional layer includes a first refractive index layer provided on a side of the light-emitting layer away from the substrate, and a second refractive index layer provided on a side of the first refractive index layer away from the substrate, the first refractive index layer including a plurality of second openings corresponding to the microlens structure, and having a smaller refractive index than the second refractive index layer.

14. A display device comprising the display panel according to claim 1.

15. the first direction and the second direction are opposite directions, The display device of claim 14 , wherein the first interval and the second interval are the same.

16. The repeat unit further includes a third microlens structure, and the plurality of light-emitting sub-pixels further include a third light-emitting sub-pixel corresponding to the third microlens structure; The display device of claim 14 , wherein a center point of the third microlens structure and a center point of the third light-emitting sub-pixel have a third distance in a third direction, and the first direction, the second direction, and the third direction are all different from each other.

17. The first direction, the second direction, and the third direction are provided in this order at intervals of 120°, The display device of claim 16 , wherein the first interval, the second interval, and the third interval are all the same.

18. The repeat unit further includes a fourth microlens structure, and the plurality of light-emitting sub-pixels further include a fourth light-emitting sub-pixel corresponding to the fourth microlens structure; 17. The display device of claim 16, wherein a center point of the fourth microlens structure and a center point of the fourth light-emitting subpixel have a fourth distance in a fourth direction, and the first direction, the second direction, the third direction, and the fourth direction are all different.

19. The first direction, the second direction, the third direction, and the fourth direction are provided in this order at intervals of 90°, The display device of claim 18 , wherein the first interval, the second interval, the third interval, and the fourth interval are all the same.

20. The display device of claim 14 , wherein the shape of the microlens structure is the same as the shape of the corresponding light-emitting subpixel, and the size of the microlens structure is the same as the size of the corresponding light-emitting subpixel.

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