Display panel and display device

Abstract

The present application is applicable to the field of display technology, and provides a display panel and a display device, wherein the display panel includes a display component and an optical waveguide panel, wherein the display component includes a plurality of sub-pixels, and the optical waveguide panel includes a plurality of waveguide groups, wherein each waveguide group is used for light emitted by a corresponding sub-pixel to enter, and the orthographic projection of the sub-pixel on the optical waveguide panel overlaps with the corresponding waveguide group, and the orthographic projection area of ​​the sub-pixel on the optical waveguide panel is smaller than the area of ​​the corresponding waveguide group, and the axis of the waveguide group corresponding to one of the sub-pixels along the first direction overlaps with the axis of the sub-pixel along the first direction. When the display panel provided by the present application is bonded, it is only necessary to satisfy that the axis of the waveguide group corresponding to one of the sub-pixels along the first direction overlaps with the axis of the sub-pixel along the first direction, and no precise alignment is required, so that the light with a larger angle among the light emitted by each sub-pixel can be emitted from the corresponding waveguide group, and the crosstalk of light from adjacent sub-pixels is small.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and more specifically, to a display panel and a display device. Background Art

[0002] With the development of science and technology, LCD / OLED / MicroLED and other display screens have gradually replaced paper books and become the most common medium for acquiring knowledge. Compared with paper printed products such as books, LCD and other display devices have many advantages in reading. For example, they can actively emit light, which can ensure normal reading in a relatively dark environment, and can display a variety of resources.

[0003] Among them, the existing display panel includes a display component and a glass cover plate, but there is a certain distance between the pixel definition layer of the display component and the glass cover plate. The area of ​​light transmitted by a single sub-pixel projected onto the bottom of the glass cover plate is larger than the size of the single sub-pixel, so that the glass cover plate within the area corresponding to the size of the single sub-pixel will be disturbed by the large-angle light of other sub-pixels. In order to ensure that the crosstalk between adjacent pixels is small in the related technology, the crosstalk between adjacent pixels is reduced by improving the alignment accuracy when bonding the glass cover plate and the display component, but the operation is relatively difficult. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a display panel and a display device to solve the technical problem of reducing crosstalk between adjacent pixels by improving the alignment accuracy between the existing display component and the glass cover.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a display panel, comprising:

[0006] A display component including a plurality of sub-pixels; and

[0007] An optical waveguide panel is arranged on the light emitting surface of the display component, and the optical waveguide panel includes a plurality of waveguide groups, each of which is used for light emitted by a corresponding sub-pixel to enter;

[0008] The orthographic projection of the sub-pixel on the optical waveguide panel overlaps with the corresponding waveguide group, and the orthographic projection area of ​​the sub-pixel on the optical waveguide panel is smaller than the area of ​​the corresponding waveguide group, and the axis of the waveguide group corresponding to one of the sub-pixels overlaps with the axis of the sub-pixel.

[0009] By adopting the above technical solution, by adopting an optical waveguide panel, and by overlapping the orthographic projection of the sub-pixel on the optical waveguide panel with the corresponding waveguide group, the orthographic projection area of ​​each sub-pixel on the optical waveguide panel is made smaller than the area of ​​the corresponding waveguide group, and further overlapping the axis of the waveguide group corresponding to one of the sub-pixels along the first direction with the axis of the sub-pixel along the first direction, the other sub-pixels can be located in the area of ​​the corresponding waveguide group, and the light with a larger angle among the light emitted by each sub-pixel can be emitted from the corresponding waveguide group, and the alignment is relatively simple, which solves the technical problem of reducing crosstalk between adjacent pixels by improving the alignment accuracy between the existing display component and the glass cover plate, is simple and convenient to operate, and has a good display effect.

[0010] Optionally, the waveguide group includes multiple waveguide units, and the area of ​​each sub-pixel and the area of ​​the corresponding multiple waveguide units satisfy the formula: r=[S1-S2] / S2, r<0.25, wherein S1 is the area of ​​the multiple waveguide units, and S2 is the area of ​​the sub-pixel.

[0011] By adopting the above technical solution, when the waveguide panel is bonded to the display component, it is only necessary to ensure that the ratio of the area of ​​each sub-pixel not covering the corresponding waveguide unit to the sub-pixel area is set to less than 0.25. It is not necessary to ensure that each sub-pixel completely covers the corresponding waveguide unit. Direct bonding can reduce the optical crosstalk between adjacent pixels, and the operation is simple and convenient.

[0012] Optionally, when the waveguide unit is a square structure, S1 = c*d 2 , S2=(Lx+Dx)*(Ly+Dy), wherein d is the size of the waveguide unit, Lx is the length of each sub-pixel effective area, Ly is the width of each sub-pixel effective area, Dx is the spacing between two adjacent sub-pixel effective areas along the second direction, Ly is the spacing between two adjacent sub-pixel effective areas along the third direction, the second direction is the length direction of the sub-pixel effective area, the third direction is the width direction of the sub-pixel effective area, and the second direction and the third direction are both arranged perpendicular to the first direction.

[0013] By adopting the above technical solution, the area S2 of a single sub-pixel is set to (Lx+Dx)*(Ly+Dy), and the alignment of the entire period is based on to avoid deviation of other sub-pixels during alignment.

[0014] Optionally, the plurality of waveguide groups include a first waveguide sequence and a second waveguide sequence arranged parallel to the second direction, the first waveguide sequence includes a plurality of first waveguide units arranged along the second direction, and the second waveguide sequence includes a plurality of second waveguide units arranged along the second direction;

[0015] Wherein, the adjacent first waveguide units and the second waveguide units at least partially overlap in the third direction.

[0016] By adopting the above technical solution, the first waveguide unit and the second waveguide unit are completely overlapped in the third direction, which makes processing and bonding more convenient; the first waveguide unit and the second waveguide unit are partially overlapped in the third direction, thereby reducing the generation of moiré patterns caused by bonding the optical waveguide panel and the display component.

[0017] Optionally, the waveguide group includes a plurality of waveguide units, and the waveguide units include:

[0018] Central layer; and

[0019] The skin layer is arranged on the outer peripheral surface of the central layer, the refractive index of the skin layer is smaller than the refractive index of the central layer, and the refractive index of the central layer is 1.3-1.6.

[0020] By adopting the above technical solution, the light incident from the incident end of the central layer can be fully emitted when passing through the junction between the cortex and the central layer, so that as much light as possible can be emitted from the waveguide unit.

[0021] Optionally, the central layer is a circular, square or regular polygonal structure; and / or the skin layer is a circular, square or regular polygonal structure.

[0022] By adopting the above technical solution, circular and square skin layers are used to facilitate the alignment and fitting between the waveguide unit and the sub-pixel when the optical waveguide panel is attached to the display component, and regular polygonal skin layers are used to facilitate processing and molding.

[0023] Optionally, the sub-pixel is square, and the side length of the sub-pixel ranges from 30 to 500 μm; and / or the size of the waveguide unit is greater than 2 μm, and the size of the waveguide unit is smaller than the side length of the sub-pixel.

[0024] By adopting the above technical solution, it is avoided that the sub-pixel size is too large, resulting in the optical waveguide panel being attached to the display component without achieving the floating display effect. At the same time, it is also avoided that the size of the waveguide unit and the sub-pixel are similar, resulting in the easy generation of moiré patterns after the optical waveguide panel is attached to the display component.

[0025] Optionally, the display panel further includes:

[0026] The optical adhesive layer is arranged between the display component and the optical waveguide panel, and the thickness of the optical adhesive layer is 10-200 um.

[0027] By adopting the above technical solution, the optical waveguide panel can be attached to the display component, and the bonding effect between the optical waveguide panel and the display component and the display effect can be guaranteed, thereby avoiding the poor bonding effect caused by too small thickness, which affects the reliability of the entire display panel; at the same time, it also avoids the excessive thickness that increases the thickness of the entire display panel, affects the final display effect, and causes the entire display screen to become blurred.

[0028] Optionally, the optical waveguide panel has a thickness of 4-10 mm.

[0029] By adopting the above technical solution, the inconvenience of processing due to being too small can be avoided, while the thickness of the entire display panel that is too thick can be avoided, affecting the final display effect and causing the entire display image to become blurred.

[0030] The present application also provides a display device, including a backlight module and the display panel described above.

[0031] By adopting the above technical solution and the above display panel, by overlapping the orthographic projection of the sub-pixel on the optical waveguide panel with the corresponding waveguide group, making the orthographic projection area of ​​each sub-pixel on the optical waveguide panel smaller than the area of ​​the corresponding waveguide group, and further overlapping the axis of the waveguide group corresponding to one of the sub-pixels with the axis of the sub-pixel, the other sub-pixels can be located within the area of ​​the corresponding waveguide group, so that the light with a larger angle among the light emitted by each sub-pixel can be emitted from the corresponding waveguide group, and the alignment is relatively simple, thereby solving the technical problem of reducing the crosstalk between adjacent pixels by improving the alignment accuracy between the existing display component and the glass panel, and the operation is simple and convenient, and the display effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 A schematic cross-sectional view of a display device provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of a top view structure of a sub-pixel and an optical waveguide panel provided in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of the top view of the optical waveguide panel provided in the first embodiment of the present application;

[0036] Figure 4A schematic diagram of the top view of the optical waveguide panel provided in the second embodiment of the present application;

[0037] Figure 5 A schematic diagram of the top view of the optical waveguide panel provided in the third embodiment of the present application;

[0038] Figure 6 A schematic diagram of the top view of the optical waveguide panel provided in the fourth embodiment of the present application;

[0039] Figure 7 A schematic diagram of the top view of the optical waveguide panel provided in the fifth embodiment of the present application;

[0040] Figure 8 A schematic diagram of the three-dimensional structure of a waveguide unit provided in an embodiment of the present application;

[0041] Fig. 9 A flow chart of a method for manufacturing an optical waveguide panel provided in an embodiment of the present application.

[0042] Among them, the reference numerals in the figure are:

[0043] 10-display panel; 11-display assembly; 111-lower polarizer; 112-lower glass plate; 113-array substrate; 114-liquid crystal layer; 115-color filter substrate; 116-sub-pixel; 117-light shielding layer; 118-upper glass plate; 119-upper polarizer; 12-optical waveguide panel; 120-waveguide group; 1201-first waveguide sequence; 1202-second waveguide sequence; 121-waveguide unit; 1211-first waveguide unit; 1212-second waveguide unit; 1213-central layer; 1214-skin layer; 13-optical adhesive layer;

[0044] 2- Backlight module;

[0045] L1-the axis of the waveguide group corresponding to the sub-pixel along the first direction; L2-the axis of the sub-pixel along the first direction;

[0046] x-second direction; y-third direction. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0049] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. Please refer to Figure 1 and Figure 2 Now, the display panel 10 provided in the embodiment of the present application is described. The display panel 10 is used to connect with the backlight module 2 to form a display device, which is widely used in electronic products such as televisions, mobile terminals or desktop displays.

[0051] Specifically, the display panel 10 includes a display assembly 11 and an optical waveguide panel 12 . The components of the display panel 10 are further described below.

[0052] The display component 11 includes a plurality of sub-pixels, each of which is a sub-pixel of different colors, such as red, green or blue, so that the display component 11 can emit light of different colors;

[0053] The light waveguide panel 12 is disposed on the light emitting surface of the display component 11. Light emitted by each sub-pixel is incident into the light waveguide panel 12. The light waveguide panel 12 includes a plurality of waveguide groups 120. Each waveguide group 120 is used for light emitted by a corresponding sub-pixel to enter.

[0054] Furthermore, the orthographic projection of the sub-pixel on the optical waveguide panel 12 overlaps with the waveguide group 120, and the orthographic projection area of ​​the sub-pixel on the optical waveguide panel 12 is smaller than the area of ​​the corresponding waveguide group 120, and the axis L1 of the waveguide group 120 corresponding to one of the sub-pixels along the first direction overlaps with the axis L2 of the sub-pixel along the first direction, wherein the first direction is the Z-axis direction, and during bonding, it is only necessary to satisfy that the axis L1 of the waveguide group 120 corresponding to one of the sub-pixels along the first direction overlaps with the axis L2 of the sub-pixel along the first direction, then the other sub-pixels can be located within the area of ​​the corresponding waveguide group 120, so that the light with a larger angle among the light emitted by each sub-pixel can be emitted from the corresponding waveguide group 120, and the light emitted by the sub-pixel can be prevented from being emitted from the waveguide group 120 corresponding to the adjacent sub-pixel, and the light crosstalk between adjacent sub-pixels is small.

[0055] It should be noted that the orthographic projection area of ​​each pixel in the display panel in the related technology on the glass panel is close to the area of ​​the corresponding waveguide group. A slight deviation during bonding will cause crosstalk problems between two adjacent pixels. Therefore, when bonding the glass panel to the display component, it is necessary to improve the alignment accuracy to ensure that each pixel completely covers the corresponding glass panel to reduce optical crosstalk between adjacent pixels.

[0056] Based on this, the applicant has found through research that by adopting an optical waveguide panel 12, and overlapping the orthographic projection of the sub-pixel on the optical waveguide panel 12 with the corresponding waveguide group 120, and the orthographic projection area of ​​the sub-pixel on the optical waveguide panel 12 is smaller than the area of ​​the corresponding waveguide group 120, when bonding, it is only necessary to satisfy that the axis of the waveguide group 120 corresponding to one of the sub-pixels along the first direction overlaps with the axis of the sub-pixel along the first direction, then the other sub-pixels can naturally be located in the area of ​​the corresponding waveguide group 120, so that the light with a larger angle among the light emitted by each sub-pixel can be emitted from the corresponding waveguide group 120, and the light emitted by the sub-pixel can be prevented from being emitted from the waveguide group 120 corresponding to the adjacent sub-pixel, and the crosstalk between the adjacent sub-pixels is small, thereby solving the technical problem of reducing the crosstalk between adjacent pixels by improving the alignment accuracy between the existing display component and the glass panel, and the operation is simple and convenient, and the display effect is better.

[0057] Furthermore, the waveguide group 120 includes a plurality of waveguide units 121, and the area of ​​each sub-pixel and the area of ​​the corresponding plurality of waveguide units 121 satisfy the formula: r=[S1-S2] / S2, r<0.25, wherein S1 is the area of ​​the plurality of waveguide units 121, and S2 is the area of ​​the sub-pixel, so that the area of ​​the light emitted by each sub-pixel projected onto the optical waveguide panel 12 is located within the area of ​​the waveguide group 120 corresponding to the sub-pixel, thereby making the light emitted by each sub-pixel incident into the corresponding waveguide unit 121 and emitted without crosstalk to the waveguide unit 121 corresponding to the adjacent sub-pixel, that is, the optical waveguide panel 12 and the display component 11 do not need to consider the alignment accuracy when bonding, and can be directly attached.

[0058] Specifically, in this embodiment, r is 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23 or 0.24. When the optical waveguide panel 12 is bonded to the display component 11, it is not necessary to ensure that each sub-pixel completely covers the corresponding waveguide unit 121. Direct bonding can reduce the optical crosstalk between two adjacent sub-pixels. As long as the ratio of the area of ​​each sub-pixel that does not cover the corresponding waveguide unit 121 to the sub-pixel area is set to less than 0.25, the operation is simple and convenient, and the display effect is better.

[0059] Specifically, see Figure 2 , when the waveguide unit 121 is a square structure, S1=c*d 2 , S2=(Lx+Dx)*(Ly+Dy), where d is the side length of the waveguide unit 121, Lx is the length of each sub-pixel effective area 116, Ly is the width of each sub-pixel effective area 116, Dx is the spacing between two adjacent sub-pixel effective areas 116 along the second direction x, Ly is the spacing between two adjacent sub-pixel effective areas 116 along the second direction x and the third direction y, the second direction x refers to the length direction of the sub-pixel effective area 116, and the third direction y refers to the width of the sub-pixel effective area 116. The width direction of the region 116, the second direction x and the third direction y are all arranged perpendicular to the first direction, so that the area where the light emitted by each sub-pixel of the square structure is projected onto the optical waveguide panel 12 is located within the area of ​​the waveguide group 120 corresponding to the sub-pixel, and then the light emitted by each sub-pixel is incident on the corresponding waveguide unit 121 and emitted without crosstalk to the waveguide unit 121 corresponding to the adjacent sub-pixel, that is, there is no need to consider the alignment accuracy when the optical waveguide panel and the display component 11 are bonded, and they can be directly attached.

[0060] It should be noted that the area of ​​a single sub-pixel is (Lx+Dx)*(Ly+Dy) because when the display component 11 and the optical waveguide panel 12 are bonded, the sub-pixels are arranged periodically, and the arrangement of the waveguide unit 121 is also periodic. The bonding must consider the alignment of the entire period. If only the effective area of ​​the pixel is considered, when one of the sub-pixels is aligned, there will be deviations in the alignment of other sub-pixels.

[0061] In one embodiment of this application, please refer to Figures 3 to 7 The multiple waveguide groups 120 include a first waveguide sequence 1201 and a second waveguide sequence 1202 arranged parallel to the second direction x, the first waveguide sequence 1201 includes a plurality of first waveguide units 1211 arranged in sequence along the second direction x, and the second waveguide sequence 1202 includes a plurality of second waveguide units 1212 arranged in sequence along the second direction x.

[0062] Further, in this embodiment, see Figure 3 and Figure 6 The adjacent first waveguide unit 1211 and the second waveguide unit 1212 are completely overlapped in the third direction y, that is, the position of the first waveguide unit 1211 corresponds to the position of the second waveguide unit 1212. The first waveguide unit 1211 and the second waveguide unit 1212 are completely overlapped in the third direction y, and processing and bonding are more convenient.

[0063] Of course, in other embodiments, see Figure 4 , Figure 5 and Figure 7 , the adjacent first waveguide units 1211 and the second waveguide units 1212 partially overlap in the third direction y, that is, the first waveguide units 1211 and the second waveguide units 1212 are staggered in the third direction y, wherein a first waveguide unit 1211 is arranged between two adjacent second waveguide units 1212. Since the arrangement of sub-pixels is relatively regular, moiré patterns are easily generated between neatly arranged waveguide units 121 and neatly arranged sub-pixels. In this embodiment, the waveguide units 121 are staggered, thereby reducing the generation of moiré patterns after the optical waveguide panel 12 and the display component 11 are bonded.

[0064] In one embodiment of this application, please refer to Figure 1 and Figure 8The waveguide unit 121 includes a central layer 1213 and a cortex 1214, wherein the cortex 1214 is arranged on the outer peripheral surface of the central layer 1213, and the refractive index n2 of the cortex 1214 is less than the refractive index n1 of the central layer 1213. The refractive index n2 of the cortex 1214 is set to be less than the refractive index n1 of the central layer 1213, that is, n2 is less than n1. In this embodiment, the refractive index n1 of the central layer 1213 is further set to be between 1.3 and 1.6, so that the light incident from the incident end of the central layer 1213 can be fully emitted when passing through the junction between the cortex 1214 and the central layer 1213, so that as much light as possible can be emitted from the waveguide unit 121.

[0065] In one embodiment of the present application, see Figures 3 to 7 , the central layer 1213 is a circular, square or regular polygonal structure; and / or, the skin layer 1214 is a circular, square or regular polygonal structure, that is, the shape of the waveguide unit 121 has the following situations: the first situation is that the central layer 1213 is circular, and the skin layer 1214 arranged on the outer peripheral surface of the central layer 1213 can be a circular, square or regular polygonal structure, wherein the circular central layer 1213 is matched with a circular skin layer 1214, or the circular central layer 1213 is matched with a square skin layer 1214, or the circular central layer 1213 is matched with a regular polygonal skin layer 1214; the second situation is that the central layer 1213 is square, and the skin layer 1214 arranged on the outer peripheral surface of the central layer 1213 is 214 can be a circular, directional or regular polygonal structure, wherein the square central layer 1213 is matched with a circular cortex 1214, or the square central layer 1213 is matched with a square cortex 1214, or the square central layer 1213 is matched with a regular polygonal cortex 1214; the third case is that the shape of the central layer 1213 is a regular polygon, and the cortex 1214 arranged on the outer peripheral surface of the central layer 1213 can be a circular, square or regular polygonal structure, wherein the regular polygonal central layer 1213 is matched with a circular cortex 1214, or the regular polygonal central layer 1213 is matched with a square cortex 1214, or the regular polygonal central layer 1213 is matched with a regular polygonal cortex 1214.

[0066] The following embodiments are provided based on the arrangement of the central layer 1213 and the skin layer 1214 in different shapes:

[0067] Embodiment 1:

[0068] Specifically, see Figure 3In this embodiment, when the shape of the central layer 1213 is circular and the shape of the skin layer 1214 is square, and the adjacent first waveguide units 1211 and the second waveguide units 1212 are arranged one-to-one in the second direction x, the skin layer 1214 is arranged in a square shape and the adjacent first waveguide units 1211 and the second waveguide units 1212 are arranged one-to-one, which ensures that when the optical waveguide panel 12 and the display component 11 are bonded, it is more conducive to alignment.

[0069] Embodiment 2:

[0070] The difference from the above embodiment is that, see Figure 4 The shape of the cortex 1214 is a regular hexagon, and the adjacent first waveguide units 1211 and the second waveguide units 1212 partially overlap in the second direction x. The processing technology of the hexagonal cortex 1214 is simpler, and the adjacent first waveguide units 1211 and the second waveguide units 1212 partially overlap in the second direction x, which can reduce the generation of moiré patterns after the optical waveguide panel 12 and the display component 11 are bonded.

[0071] Embodiment three:

[0072] The difference from the above embodiment is that, see Figure 5 The shape of the central layer 1213 is circular, and the shape of the skin layer 1214 is square, but the adjacent first waveguide units 1211 and second waveguide units 1212 partially overlap in the second direction x, so that the generation of moiré patterns after the optical waveguide panel 12 and the display component 11 are bonded can be reduced.

[0073] Embodiment 4:

[0074] The difference from the above embodiment is that, see Figure 6 The shape of the central layer 1213 is square, the shape of the skin layer 1214 is square, and the adjacent first waveguide units 1211 and the second waveguide units 1212 are arranged one by one in the second direction x, so that it is more conducive to alignment when the optical waveguide panel 12 and the display component 11 are bonded.

[0075] Embodiment five:

[0076] The difference from the above embodiment is that, see Figure 7 The shape of the central layer 1213 is square, the shape of the skin layer 1214 is square, and the adjacent first waveguide units 1211 and second waveguide units 1212 partially overlap in the second direction x, so that the generation of moiré patterns after the optical waveguide panel 12 and the display component 11 are bonded can be reduced.

[0077] In one embodiment of the present application, see Figure 1 and Figure 2 The shape of the sub-pixel is square, and the side length L of the sub-pixel ranges from 30 to 500 mm. In specific applications, the sub-pixel size is avoided to be too large, resulting in the optical waveguide panel 12 being attached to the display component 11 without achieving the floating display effect. At the same time, it is also avoided that the sub-pixel size is too small, and the size of the waveguide unit 121 is similar to that of the sub-pixel, resulting in the easy generation of moiré patterns after the optical waveguide panel 12 is attached to the display component 11.

[0078] For further information, see Figure 1 and Figure 2 , the size d of the waveguide unit 121 is greater than 2 μm, and the size d of the waveguide unit 121 is smaller than the side length L of the sub-pixel, wherein the size d of the waveguide unit 121 refers to the side length of the waveguide unit 121 or the diameter of the waveguide unit 121. When the waveguide unit 121 is square, the size d of the waveguide unit 121 refers to the side length of the waveguide unit 121. When the waveguide unit 121 is circular, the size d of the waveguide unit 121 refers to the diameter of the waveguide unit 121, thereby avoiding the waveguide unit 121 being similar in size to the sub-pixel, which results in the easy generation of moiré patterns after the optical waveguide panel 12 is attached to the display component 11.

[0079] In another embodiment of the present application, please refer to Figure 1 The display panel 10 further includes an optical adhesive layer 13 , which is disposed between the display component 11 and the optical waveguide panel 12 . By using the optical adhesive layer 13 , the optical waveguide panel 12 can be attached to the display component 11 .

[0080] Specifically, further combining Figure 8 In this embodiment, the optical adhesive layer 13 and the waveguide unit 121 satisfy the following formula: n*sinθ=NA, where n is the refractive index of the optical adhesive layer 13, n1 is the refractive index of the central layer 1213, n2 is the refractive index of the cortex 1214, and θ is the maximum angle at which light can be transmitted in the waveguide structure. By changing the refractive index of the optical adhesive layer 13, the angle θ can be adjusted so that light greater than the angle θ is refracted into the cortex 1214 when incident on the junction of the central layer 1213 and the cortex 1214, and light incident within the range of the angle θ is totally reflected when incident on the junction of the central layer 1213 and the cortex 1214, and is emitted from the exit end of the central layer 1213.

[0081] Furthermore, the thickness of the optical adhesive layer 13 is 10-200 μm. In specific applications, the thickness of the optical adhesive layer 13 is 10 μm, 25 μm, 50 μm, 75 μm, 100 μm, 125 μm, 150 μm, 175 μm or 200 μm, which can be selected according to specific needs. It can ensure the bonding effect and display effect between the optical waveguide panel 12 and the display component 11, and avoid the poor bonding effect caused by too small thickness, which affects the reliability of the entire display panel 10; at the same time, it also avoids the excessive thickness that increases the thickness of the entire display panel 10, affects the final display effect, and causes the entire display screen to become blurred.

[0082] In one embodiment of the present application, see Figure 1 The thickness of the optical waveguide panel 12 is 4-10μm. In specific applications, the thickness of the optical waveguide panel 12 is 4μm, 5μm, 6μm, 7μm, 8μm, 9μm or 10μm. It can be selected according to specific needs to avoid inconvenience in processing due to being too small, and also avoid affecting the thickness of the entire display panel 10 due to being too thick, affecting the final display effect, and causing the entire display screen to become blurred.

[0083] Further integration Fig. 9 The preparation method of the optical waveguide panel 12 used in the above-mentioned display panel 10 is as follows:

[0084] Step S100: single wire drawing, a glass rod is set in the center of the hollow glass, and the peripheral control glass is drawn into a filament by heating and drawing to form a waveguide unit 121. The central glass rod can be round, square or regular polygonal;

[0085] Step S200: Arrange a plurality of waveguide units 121 in combination, wherein the arrangement may be one-to-one arrangement or staggered arrangement, and the staggered arrangement may greatly increase the efficiency;

[0086] Step S300: Pressing and molding, the arranged waveguide units 121 need to be placed in a mold and pressurized, and then the separated waveguide units 121 are pressed together to form a whole under high temperature conditions; wherein, in this step, the heating method includes but is not limited to heat conduction, infrared heating method or microwave heating method, as long as the plurality of waveguide units 121 can be pressed together to form a whole;

[0087] Step S400: composite wire drawing. The waveguide unit 121 drawn once is relatively large in size. The above steps need to be repeated for multiple times to obtain the required optical waveguide panel 12. Generally, the required optical waveguide panel 12 can be obtained by repeating the steps for 2-3 times.

[0088] Step S500: cutting, grinding and polishing. Since the pressed optical waveguide panel 12 is generally thick, it can be cut as needed and then ground and polished.

[0089] In one embodiment of the present application, the display component 11 includes a lower polarizer 111, a lower glass plate 112, an array substrate 113, a liquid crystal layer 114, a color film substrate 115, an upper glass plate 118 and an upper polarizer 119, which are arranged in sequence from a direction away from the light waveguide panel 12 to a direction close to the light waveguide panel 12, wherein the array substrate 113 includes a plurality of sub-pixel switches, the color film substrate 115 includes a plurality of sub-pixels arranged corresponding to the sub-pixel switches and a shading layer 117 arranged between two adjacent sub-pixels, so that light of various colors can be emitted.

[0090] See also Figure 1 The present application also provides a display device, which includes the display panel 10 in any of the above embodiments.

[0091] The display device provided by the present application adopts the above-mentioned display panel 10, and overlaps the orthographic projection of the sub-pixel on the optical waveguide panel 12 with the corresponding waveguide group 120, and the orthographic projection area of ​​the sub-pixel on the optical waveguide panel 12 is smaller than the area of ​​the corresponding waveguide group 120. When bonding, it is only necessary to satisfy that the axis of the waveguide group 120 corresponding to one of the sub-pixels overlaps with the axis of the sub-pixel, then the other sub-pixels can be located in the area of ​​the corresponding waveguide group 120, so that the light with a larger angle among the light emitted by each sub-pixel can be emitted from the corresponding waveguide group 120, and the light emitted by the sub-pixel can be prevented from being emitted from the waveguide group 120 corresponding to the adjacent sub-pixel, and the crosstalk between the adjacent sub-pixels is small, thereby solving the technical problem of reducing the crosstalk between adjacent pixels by improving the alignment accuracy between the existing display component and the glass panel, and the operation is simple and convenient, and the display effect is good.

[0092] Specifically, in this embodiment, the display device further includes a backlight module, which is disposed on a side of the display component 11 away from the light waveguide panel 12. Of course, in other embodiments, the display panel 10 is an organic light emitting diode screen, which can realize self-luminescence.

[0093] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: A display component including a plurality of sub-pixels; and A light waveguide panel is arranged on the light emitting surface of the display component, and the light waveguide panel includes a plurality of waveguide groups, each of which is used for light emitted by a corresponding sub-pixel to enter; The orthographic projection of the sub-pixel on the optical waveguide panel overlaps with the corresponding waveguide group, and the orthographic projection area of ​​the sub-pixel on the optical waveguide panel is smaller than the area of ​​the corresponding waveguide group, and the axis of the waveguide group corresponding to one of the sub-pixels along the first direction overlaps with the axis of the sub-pixel along the first direction; the waveguide group includes a plurality of waveguide units, and the area of ​​each sub-pixel and the area of ​​the corresponding plurality of waveguide units satisfy the formula: r=[S1-S2] / S2, r<0.25, wherein S1 is the area of ​​the plurality of waveguide units, and S2 is the area of ​​the sub-pixel; When the waveguide unit is a square structure, S1 = c*d 2 , S2=(Lx+Dx)*(Ly+Dy), wherein c is the number of waveguide units, d is the side length of the waveguide unit, Lx is the length of each sub-pixel effective area, Ly is the width of each sub-pixel effective area, Dx is the spacing between two adjacent sub-pixel effective areas along the second direction, Ly is the spacing between two adjacent sub-pixel effective areas along the third direction, the second direction is the length direction of the sub-pixel effective area, the third direction is the width direction of the sub-pixel effective area, and the second direction and the third direction are both perpendicular to the first direction.

2. The display panel according to claim 1, wherein: The plurality of waveguide groups include a first waveguide sequence and a second waveguide sequence arranged parallel to the second direction, the first waveguide sequence includes a plurality of first waveguide units arranged along the second direction, and the second waveguide sequence includes a plurality of second waveguide units arranged along the second direction; Wherein, the adjacent first waveguide units and the second waveguide units at least partially overlap in the third direction.

3. The display panel according to claim 1 or 2, characterized in that: The waveguide unit comprises: Central layer; and The skin layer is arranged on the outer peripheral surface of the central layer, the refractive index of the skin layer is smaller than the refractive index of the central layer, and the refractive index of the central layer is 1.3-1.

6.

4. The display panel according to claim 3, wherein: The central layer is a circular, square or regular polygonal structure; and / or the cortical layer is a circular, square or regular polygonal structure.

5. The display panel according to claim 1 or 2, characterized in that: The sub-pixel is square, and the side length of the sub-pixel ranges from 30 to 500 μm; and / or the size of the waveguide unit is greater than 2 μm, and the size of the waveguide unit is smaller than the side length of the sub-pixel.

6. The display panel according to claim 1 or 2, characterized in that: The display panel further includes: The optical adhesive layer is arranged between the display component and the optical waveguide panel, and the thickness of the optical adhesive layer is 10-200 um.

7. The display panel according to claim 1 or 2, characterized in that: The thickness of the optical waveguide panel is 4-10 mm.

8. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 7.

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