Light leakage inhibiting layer and display panel

Abstract

An anti-leakage layer and a display panel, the anti-leakage layer comprising a plurality of columnar structures separated from each other. In a top view of the anti-leakage layer, the columnar structures comply with the following arrangement rule: each of the columnar structures and other ones of all the columnar structures having a fixed spacing A therebetween are connected by a plurality of virtual connecting lines to constitute a plurality of quasi-polygons, wherein the virtual connecting lines have equal lengths, and wherein the columnar structures are located on corners and / or edges of the quasi-polygons, and the quasi-polygons comprise a plurality of different shapes.

Description

Technical Field

[0001] The invention relates to a light leakage suppression layer and a display panel. Background Art

[0002] A transparent display panel is a light-transmitting device that allows users to simultaneously see both the displayed image and the background behind the panel. Such devices have a wide range of applications, including vending machine windows, car windows, residential windows, and storefront windows.

[0003] When the display panel displays an image, light from the internal light source may reflect within the display panel, causing light leakage from the back of the display panel. Especially at wide viewing angles, the image displayed by the display panel may be reflected at the interface between the display panel and the air. This reflected light may leak out the back of the display panel, affecting the visual effect from the back. Summary of the Invention

[0004] The present invention provides a light leakage suppression layer and a display panel, which can improve the problem of uneven light leakage on the back side of the display panel.

[0005] At least one embodiment of the present invention provides a light leakage suppression layer. The light leakage suppression layer includes a plurality of spaced-apart columnar structures. In a top view of the light leakage suppression layer, the columnar structures conform to the following arrangement rule: each columnar structure and all other columnar structures with a fixed spacing A therebetween are connected by a plurality of virtual lines to form a plurality of quasi-polygons, wherein the virtual lines have equal lengths, the columnar structures are located at corners and / or sides of the quasi-polygons, and the quasi-polygons can have a variety of different shapes.

[0006] At least one embodiment of the present invention provides a display panel including a plurality of light-emitting elements and the light leakage suppression layer.

[0007] Based on the above, by adjusting the arrangement of the columnar structure, the problem of uneven back-side light leakage at different azimuth angles can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present invention.

[0009] Figure 2 FIG. 1 is a schematic top view of a light leakage suppression layer according to an embodiment of the present invention.

[0010] Figure 3 FIG. 1 is a schematic top view of a light leakage suppression layer according to an embodiment of the present invention.

[0011] Figure 4FIG. 1 is a schematic top view of a light leakage suppression layer according to an embodiment of the present invention.

[0012] Figure 5 FIG. 1 is a schematic top view of a light leakage suppression layer according to an embodiment of the present invention.

[0013] Figure 6 FIG. 1 is a schematic top view of a light leakage suppression layer according to an embodiment of the present invention.

[0014] Figure 7 FIG. 1 is a schematic top view of a light leakage suppression layer according to an embodiment of the present invention.

[0015] Figure 8A for Figure 7 A three-dimensional schematic diagram of a light leakage suppression layer.

[0016] Figure 8B To include Figure 7 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles Backside light leakage intensity distribution on the .

[0017] Figure 9 To include Figure 2 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles Backside light leakage intensity distribution on the .

[0018] Figure 10 To include Figure 3 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles Backside light leakage intensity distribution on the .

[0019] Figure 11 To include Figure 4 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles Backside light leakage intensity distribution on the .

[0020] Figure 12 To include Figure 5 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles Backside light leakage intensity distribution on the .

[0021] Figure 13 To include Figure 6 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles Backside light leakage intensity distribution on the .

[0022] Figure 14A The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction x are shown.

[0023] Figure 14B The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction y are shown.

[0024] Figure 15A The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction x are shown.

[0025] Figure 15B The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction y are shown.

[0026] Description of reference numerals:

[0027] 10: Display panel

[0028] 100, 100A, 100B, 100C, 100D, 100E, 100F: Light leakage suppression layer

[0029] 110: Columnar structure

[0030] 120: Transparent layer

[0031] 200: first transparent substrate

[0032] 300: Multiple light-emitting elements

[0033] 400: Optical adhesive layer

[0034] 500: Second transparent substrate

[0035] A: Fixed spacing

[0036] D1: First direction

[0037] DL: Virtual Line

[0038] d: measurement direction

[0039] H: Height

[0040] HPA,HPB,HPC,HPD,HPE,HPF,HPG,HPH,HPI,HPJ,HPK,HPL,HPM,HPN,HPO,HPP,HPQ: quasi-polygon

[0041] P1, P2: spacing

[0042] RA, RB, RC, RD, RE: repeating unit

[0043] W: width

[0044] x,y: direction

[0045] z: vertical direction

[0046] θ: tilt angle

[0047] : Azimuth DETAILED DESCRIPTION

[0048] Figure 1 is a cross-sectional view of a display panel 10 according to an embodiment of the present invention. Figure 1 The display panel 10 includes a light leakage suppression layer 100 , a first transparent substrate 200 , a plurality of light emitting elements 300 , an optical adhesive layer 400 and a second transparent substrate 500 .

[0049] The first transparent substrate 200 and the second transparent substrate 500 are, for example, rigid substrates, and their materials may be glass, quartz, organic polymers, or other applicable materials. However, the present invention is not limited thereto. In other embodiments, the first transparent substrate 200 and the second transparent substrate 500 may also be flexible substrates or stretchable substrates. For example, the materials of the flexible substrate and the stretchable substrate include polyimide (PI), polydimethylsiloxane (PDMS), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyester (PES), polymethylmethacrylate (PMMA), polycarbonate (PC), polyurethane PU, or other suitable materials.

[0050] In some embodiments, the refractive index of the first transparent substrate 200 and the second transparent substrate 500 is about 1.5. In some embodiments, the thickness of the first transparent substrate 200 is about 400 microns to 1100 microns. In some embodiments, the second transparent substrate 500 can be omitted.

[0051] In some embodiments, a circuit structure (not shown) is disposed on the first transparent substrate 200 and includes, for example, multiple conductive layers and multiple insulating layers. In some embodiments, the circuit structure further includes multiple active elements and / or multiple passive elements. The active elements may be thin film transistors.

[0052] The light emitting element 300 is disposed on the first transparent substrate 200 and electrically connected to the circuit structure on the first transparent substrate 200. In some embodiments, the light emitting element 300 includes a micro light emitting diode, a mini light emitting diode, an organic light emitting diode, or other suitable light emitting elements.

[0053] The optical adhesive layer 400 is located on and covers the light emitting element 300. The light emitting element 300 and the optical adhesive layer 400 are located between the first transparent substrate 200 and the second transparent substrate 500. The optical adhesive layer 400 is, for example, an optically clear adhesive (OCA), an optically clear resin (OCR), or other similar materials.

[0054] In some embodiments, the optical adhesive layer 400 has a refractive index of approximately 1.5 and a thickness of approximately 200 micrometers to 1000 micrometers.

[0055] The light leakage suppression layer 100 is located on a side of the first transparent substrate 200 opposite to the light emitting element 300. In other words, the first transparent substrate 200 is located between the light emitting element 300 and the light leakage suppression layer 100.

[0056] The light leakage suppression layer 100 includes discrete columnar structures 110. In other words, the columnar structures 110 are separated from each other. In some embodiments, the height H of the columnar structures 110 is 300 to 700 microns, and the width W of the columnar structures 110 is 75 to 125 microns. In some embodiments, the columnar structures 110 include a light-absorbing material for absorbing visible light, such as black resin, black metal, black oxide, or other suitable materials. In some embodiments, the columnar structures 110 have a shape including a straight columnar shape, a cylindrical shape, an elliptical columnar shape, or a funnel-shaped columnar shape.

[0057] In some embodiments, a transparent layer 120 may optionally be included around the columnar structures 110. The transparent layer 120 is located between the columnar structures 110 and fills the gaps between the columnar structures 110. In some embodiments, the transparent layer 120 surrounds the columnar structures 110 and does not cover the top and bottom surfaces of the columnar structures 110, but the present invention is not limited to this. In other embodiments, the transparent layer 120 covers the top and / or bottom surfaces of the columnar structures 110. In some embodiments, the transparent layer 120 is made of glass, oxide, organic material, or other suitable transparent material.

[0058] In some embodiments, the arrangement of the columnar structures 110 is adjusted to reduce the regularity of the columnar structures 110, thereby improving the uneven distribution of backside light leakage at different azimuth angles. For example, in the first direction D1, the columnar structures 110 are arranged with two or more pitches (e.g., pitch P1 and pitch P2) to reduce the regularity of the columnar structures 110.

[0059] In this embodiment, the display panel 10 is a transparent display panel, and the user located on the back side of the display panel 10 can see the environment in front of the display panel 10 through the display panel 10. In this embodiment, the light emitted by the light-emitting element 300 in the display panel 10 is reflected within the display panel 10 and transmitted to the light leakage suppression layer 100. The above-mentioned reflected light passes through the light leakage suppression layer 100 from the gaps in the columnar structure 110 and leaves the back side of the display panel 10, resulting in the problem of backside light leakage. In an embodiment of the present invention, the uniformity of backside light leakage is improved by adjusting the arrangement of the columnar structure 110, thereby avoiding obvious backside light leakage at specific azimuth angles.

[0060] The following will be passed Figures 2 to 7 To illustrate various embodiments of the light leakage suppression layer. Figures 2 to 7 In the embodiment, each of the columnar structures 110 and all other columnar structures with a fixed spacing A between them are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPA to HPQ having a variety of different shapes. The columnar structures 110 are located at the corners and / or sides of the pseudo-polygons, such that the length of each side of each pseudo-polygon is a positive integer multiple of the fixed spacing A. In some embodiments, the fixed spacing A is in the range of 150 microns to 7000 microns. In a preferred embodiment, the pseudo-polygons in the light leakage suppression layer include three or more different shapes, thereby improving the uniformity of backside light leakage. In a preferred embodiment, at least two of the pseudo-polygons in the light leakage suppression layer have sides of equal length, thereby further improving the uniformity of backside light leakage.

[0061] In this document, the pseudo-polygons and virtual lines DL are used solely to illustrate the arrangement of columnar structures 110 and do not represent actual components. Furthermore, each pseudo-polygon described herein does not contain any other pseudo-polygons, and the pseudo-polygons are distributed in a planar tessellation pattern within the light leakage suppression layer. The sum of the corresponding angles of multiple adjacent pseudo-polygons surrounding a columnar structure 110 is 360 degrees.

[0062] Please refer to Figure 2 In a top view of the light leakage suppression layer 100A, the columnar structures 110 conform to the following arrangement rule: Each columnar structure 110 and all other columnar structures 110 with a fixed spacing A between them are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPA, HPB, and HPC. The columnar structures 110 are located at the corners of the pseudo-polygons HPA, HPB, and HPC, such that each side of each pseudo-polygon HPA, HPB, and HPC has the same length (i.e., each side has a fixed spacing A).

[0063] exist Figure 2In an embodiment, the pseudo-polygons HPA, HPB, and HPC include a variety of different shapes. For example, the pseudo-polygons HPA, HPB, and HPC include three different shapes, where the pseudo-polygon HPA is a pentagon, the pseudo-polygon HPB is a first prism, and the pseudo-polygon HPC is a second prism. The area of ​​each first prism is different from the area of ​​each second prism.

[0064] exist Figure 2 In the embodiment, the quasi-polygons HPA, HPB, and HPC are arranged into an array comprising a plurality of repeating units RA. In this document, the repeating unit RA may also be referred to as a minimum repeating unit. Each repeating unit RA contains one or more columnar structures 110, and the arrangement of the columnar structures 110 in each repeating unit RA is the same. Figure 2 In the embodiment of the present invention, the repeating unit RA is rectangular in shape.

[0065] exist Figure 2 In the embodiment, the array of the columnar structure 110 is arranged to suppress the normal direction of the light leakage layer 100A (ie Figure 2 After rotating 180 degrees with the direction perpendicular to the paper in the figure as the rotation axis, an array of substantially identical columnar structures 110 can be obtained.

[0066] Please refer to Figure 3 In a top view of the light leakage suppression layer 100B, the columnar structures 110 conform to the following arrangement rule: Each columnar structure 110 and all other columnar structures 110 with a fixed spacing A therebetween are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPD, HPE, and HPF. The columnar structures 110 are located at the corners of the pseudo-polygons HPD, HPE, and HPF, ensuring that each side of each pseudo-polygon HPD, HPE, and HPF has the same length (i.e., each side has a fixed spacing A).

[0067] exist Figure 3 In the embodiment, the quasi-polygonal HPD, HPE, and HPF include a variety of different shapes. For example, the quasi-polygonal HPD, HPE, and HPF include three different shapes, wherein the quasi-polygonal HPD is a hexagon (e.g., a regular hexagon), the quasi-polygonal HPE is a triangle (e.g., an equilateral triangle), and the quasi-polygonal HPF is a square.

[0068] exist Figure 3 In the embodiment, the quasi-polygons HPD, HPE, and HPF are arranged into an array comprising a plurality of repeating units RB. In this document, the repeating unit RB may also be referred to as a minimum repeating unit. Each repeating unit RB contains one or more columnar structures 110, and the arrangement of the columnar structures 110 in each repeating unit RB is the same. Figure 3In the embodiment of the present invention, the repeating unit RB has a square shape.

[0069] exist Figure 3 In the embodiment, the array of columnar structures 110 is arranged to suppress the normal direction of the light leakage layer 100B (ie Figure 3 After rotating 90 degrees with the direction perpendicular to the paper in the figure as the rotation axis, an array of substantially identical columnar structures 110 can be obtained.

[0070] Please refer to Figure 4 In a top view of the light leakage suppression layer 100C, the columnar structures 110 conform to the following arrangement rule: Each columnar structure 110 and all other columnar structures 110 with a fixed spacing A therebetween are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPG, HPH, and HPI. The columnar structures 110 are located at the corners of the pseudo-polygons HPG, HPH, and HPI, such that each side of each pseudo-polygon HPG, HPH, and HPI has the same length (i.e., each side has a fixed spacing A).

[0071] exist Figure 4 In the embodiment, the quasi-polygons HPG, HPH, and HPI include a variety of different shapes. For example, the quasi-polygons HPG, HPH, and HPI include three different shapes, wherein the quasi-polygon HPG is a triangle (e.g., an equilateral triangle), the quasi-polygon HPH is a pentagon, and the quasi-polygon HPI is a square.

[0072] exist Figure 4 In the embodiment, the quasi-polygons HPG, HPH, and HPI are arranged into an array comprising a plurality of repeating units RC. In this document, the repeating unit RC may also be referred to as a minimum repeating unit. Each repeating unit RC comprises one or more columnar structures 110, and the arrangement of the columnar structures 110 in each repeating unit RC is the same. Figure 4 In the embodiment of the present invention, the repeating unit RC has a shape of a parallelogram including an acute angle of 60 degrees.

[0073] exist Figure 4 In the embodiment, the array of the columnar structure 110 is arranged to suppress the normal direction of the light leakage layer 100C (ie Figure 4 After rotating 90 degrees with the direction perpendicular to the paper in the figure as the rotation axis, an array of substantially identical columnar structures 110 can be obtained.

[0074] Please refer to Figure 5In a top view of the light leakage suppression layer 100D, the columnar structures 110 conform to the following arrangement rule: Each columnar structure 110 and all other columnar structures 110 with a fixed spacing A therebetween are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPJ, HPK, HPL, HPM, and HPN. The columnar structures 110 are located at corners or edges of the pseudo-polygons HPJ, HPK, HPL, HPM, and HPN.

[0075] exist Figure 5 In this embodiment, the pseudopolygons HPJ, HPK, HPL, HPM, and HPN include a variety of different shapes. For example, the pseudopolygons HPJ, HPK, HPL, HPM, and HPN include five different shapes: the pseudopolygon HPJ is a pentagram, the pseudopolygon HPK is a first quadrilateral, the pseudopolygon HPL is a second quadrilateral, the pseudopolygon HPM is a first heptagon, and the pseudopolygon HPN is a second heptagon. The area of ​​each first quadrilateral is different from the area of ​​each second quadrilateral. The area of ​​each first heptagon is different from the area of ​​each second heptagon.

[0076] exist Figure 5 In the embodiment, the pseudo-polygons HPJ, HPK, HPL, HPM, and HPN are arranged into an array comprising a plurality of repeating units RD. In this document, the repeating unit RD may also be referred to as a minimum repeating unit. Each repeating unit RD contains one or more columnar structures 110, and the arrangement of the columnar structures 110 in each repeating unit RD is the same. Figure 5 In the embodiment of the present invention, the repeating unit RD is in the shape of a rectangle.

[0077] exist Figure 5 In the embodiment, the array of the columnar structure 110 is arranged to suppress the normal direction of the light leakage layer 100D (ie Figure 5 After rotating 180 degrees with the direction perpendicular to the paper in the figure as the rotation axis, an array of substantially identical columnar structures 110 can be obtained.

[0078] Please refer to Figure 6 In a top view of the light leakage suppression layer 100E, the columnar structures 110 conform to the following arrangement rule: Each columnar structure 110 and all other columnar structures 110 with a fixed spacing A between them are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPO and HPP. The columnar structures 110 are located at the corners of the pseudo-polygons HPO and HPP, such that each side of each pseudo-polygon HPO and HPP has the same length (i.e., each side has a fixed spacing A).

[0079] exist Figure 6In the embodiment, the quasi-polygons HPO and HPP include a variety of different shapes. For example, the quasi-polygons HPO and HPP include two different shapes, wherein the quasi-polygon HPP is a hexagon (e.g., a regular hexagon) and the quasi-polygon HPO is a triangle (e.g., an equilateral triangle).

[0080] exist Figure 6 In the embodiment, the quasi-polygons HPO and HPP are arranged into an array comprising a plurality of repeating units RE. In this article, the repeating unit RE may also be referred to as a minimum repeating unit. Each repeating unit RE contains more than one columnar structure 110, and the arrangement of the columnar structures 110 in each repeating unit RE is the same. Figure 6 In the embodiment of the present invention, the shape of the repeating unit RE is a rectangle.

[0081] exist Figure 6 In the embodiment, the array of the columnar structure 110 is arranged to suppress the normal direction of the light leakage layer 100E (ie Figure 6 After rotating 180 degrees with the direction perpendicular to the paper in the figure as the rotation axis, an array of substantially identical columnar structures 110 can be obtained.

[0082] Please refer to Figure 7 In a top view of the light leakage suppression layer 100F, the columnar structures 110 conform to the following arrangement rule: Each columnar structure 110 and all other columnar structures 110 with a fixed spacing A therebetween are connected by multiple virtual lines DL to form a plurality of pseudo-polygons HPQ. The columnar structures 110 are located at the corners of the pseudo-polygons HPQ, such that each side of each pseudo-polygon HPQ has the same length (i.e., each side has a fixed spacing A).

[0083] exist Figure 7 In the embodiment, the quasi-polygon HPQ comprises only one shape. For example, the quasi-polygon HPP is an equilateral triangle.

[0084] Figure 7 The columnar structure 110 in the light leakage suppression layer 100F is compared with Figures 2 to 6 The columnar structures 110 in the light leakage suppression layers 100A to 100E have a relatively regular arrangement, and Figure 7 Only a single-shaped pseudo-polygon HPQ can be defined in the light leakage suppression layer 100F. Figure 7 The light leakage suppression layer 100F is prone to uneven light leakage on the back side.

[0085] Figure 8A for Figure 7 A three-dimensional schematic diagram of the light leakage suppression layer 100F. Figure 8B To include Figure 7The display panel of the light leakage suppression layer 100F is at various tilt angles θ and various azimuth angles. The back side light leakage intensity distribution diagram on the display panel can be referred to Figure 1 The only difference is that the arrangement of the columnar structure 110 in the light leakage suppression layer is adjusted to Figure 7 Arrangement shown.

[0086] Please refer to Figure 8A and 8B The tilt angle θ refers to the angle between the vertical direction z and the measurement direction d (i.e. the direction of measuring the amount of light leakage), and the azimuth angle It refers to the angle between the vertical projection of the measuring direction d on the xy plane (i.e. the plane where the directions x and y are located) and the direction x.

[0087] Depend on Figure 8B It can be found that in azimuth There is relatively obvious backside light leakage at positions of 0 degrees, 60 degrees, 120 degrees, 180 degrees, 240 degrees, and 300 degrees, which is caused by the overly regular arrangement of the columnar structures 110 .

[0088] Figures 9 to 13 Contains Figures 2 to 6 The display panel of the light leakage suppression layer is at various tilt angles θ and various azimuth angles The back side light leakage intensity distribution diagram on the display panel can be referred to Figure 1 The only difference is that the arrangement of the columnar structure 110 in the light leakage suppression layer is adjusted to Figures 2 to 6 Arrangement shown.

[0089] Compare Figure 8B as well as Figures 9 to 13 , which can be found in Figures 9 to 13 The distribution of the light leakage on the back side becomes more uniform, which is caused by reducing the regularity of the arrangement of the columnar structure 110. It can be seen that by adjusting the arrangement of the columnar structure 110, the light leakage at a specific azimuth angle can be avoided. There is an obvious light leakage problem.

[0090] Figure 14A The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction x are shown. Figure 14B The relative light leakage of the display panel of some embodiments of the present invention at various tilt angles θ in direction y is shown. The relative light leakage refers to the ratio of the light leakage intensity measured at a certain tilt angle θ to the light leakage intensity measured at a tilt angle θ=0°.

[0091] exist Figure 14A and Figure 14BVarious parameters of the display panels of the first embodiment, the second embodiment and the third embodiment are shown in Table 1.

[0092] Table 1

[0093]

[0094] exist Figure 14A 、 Figure 14B And in Example 1 of Table 1, the columnar structure is based on Figure 7 Arrange in the manner shown. Figure 14A 、 Figure 14B And in Example 2 of Table 1, the columnar structure is based on Figure 2 Arrange in the manner shown. Figure 14A 、 Figure 14B And in Example 3 of Table 1, the columnar structure is based on Figure 3 Arrange in the manner shown.

[0095] Comparing Example 1 to Example 3, it can be found that Figure 2 and Figure 3 Arranging the columnar structure in a manner can effectively reduce the relative light leakage peak in direction x.

[0096] Figure 15A The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction x are shown. Figure 15B The relative light leakage amounts of the display panels of some embodiments of the present invention at various tilt angles θ in the direction y are shown.

[0097] exist Figure 15A and Figure 15B Various parameters of the display panels of the fourth embodiment, the fifth embodiment and the sixth embodiment are shown in Table 2.

[0098] Table 2

[0099]

[0100]

[0101] exist Figure 15A 、 Figure 15B And in Example 4 of Table 2, the columnar structure is based on Figure 7 Arrange in the manner shown. Figure 15A 、 Figure 15B And in Example 5 of Table 2, the columnar structure is based on Figure 2 Arrange in the manner shown. Figure 15A 、 Figure 15B And in Example 6 of Table 2, the columnar structure is based on Figure 3 Arrange in the manner shown.

[0102] Comparing Example 4 to Example 6, it can be found that Figure 2 and Figure 3 Arranging the columnar structure in a manner can effectively reduce the relative light leakage peak in direction x.

[0103] In summary, in embodiments of the present invention, in a top view of the light leakage suppression layer, each columnar structure and all other columnar structures with a fixed spacing A between them are connected by multiple virtual lines to form multiple pseudo-polygons, where the pseudo-polygons can include a variety of different shapes. By adjusting the arrangement of the columnar structures, the uniformity of backside light leakage can be improved. In a preferred embodiment, the pseudo-polygons include three or more different shapes, and at least two of these shapes have equal side lengths, thereby further improving backside light leakage.

Claims

1. A light leakage suppression layer, comprising: A plurality of columnar structures are separated from each other, wherein in a top view of the light leakage suppression layer, the columnar structures comply with the following arrangement rules: Each of the columnar structures and all other columnar structures with a fixed spacing A therebetween are connected by a plurality of virtual lines to form a plurality of pseudo-polygons, wherein the virtual lines have equal lengths, and wherein the columnar structures are located at corners and / or sides of the pseudo-polygons, and the pseudo-polygons include a variety of different shapes. Also includes: A transparent layer is located between the columnar structures. The columnar structures include light-absorbing materials for absorbing visible light. 2 . The light leakage suppression layer as claimed in claim 1 , wherein all of the columnar structures are located at corners of the pseudo-polygons, and wherein the length of each side of each of the pseudo-polygons is equal. 3 . The light leakage suppression layer as claimed in claim 1 , wherein the quasi-polygonal shapes include three or more different shapes, and at least two of the shapes have sides of equal length. 4 . The light leakage suppression layer as claimed in claim 1 , wherein the quasi-polygonal shapes include a plurality of pentagons, a plurality of first prisms, and a plurality of second prisms, wherein an area of ​​each of the first prisms is different from an area of ​​each of the second prisms. 5 . The light leakage suppression layer as claimed in claim 1 , wherein the quasi-polygonal shapes include a plurality of hexagons, a plurality of triangles, and a plurality of squares. 6 . The light leakage suppression layer as claimed in claim 1 , wherein the quasi-polygonal shapes include a plurality of pentagons, a plurality of triangles, and a plurality of squares.

7. The light leakage suppression layer as claimed in claim 1 , wherein the pseudo-polygons include a plurality of pentagons, a plurality of first quadrilaterals, a plurality of second quadrilaterals, a plurality of first heptagons, and a plurality of second heptagons, wherein an area of ​​each of the first quadrilaterals is different from an area of ​​each of the second quadrilaterals, and an area of ​​each of the first heptagons is different from an area of ​​each of the second heptagons. 8 . The light leakage suppression layer as claimed in claim 1 , wherein a sum of corresponding angles of a plurality of adjacent quasi-polygonal shapes is 360 degrees. 9 . The light leakage suppression layer as claimed in claim 1 , wherein a height of each of the columnar structures is 300 μm to 700 μm, and a width of each of the columnar structures is 75 μm to 125 μm. 10 . The light leakage suppression layer as claimed in claim 1 , wherein the quasi-polygonal shapes are arranged into an array comprising a plurality of repeating units. The light leakage suppression layer as claimed in claim 1 , wherein the columnar structures have different pitches in a first direction.

12. A display panel comprising: a plurality of light-emitting elements; as well as The light leakage suppressing layer according to any one of claims 1 to 11.

13. The display panel according to claim 12, further comprising: A transparent substrate is provided, wherein the transparent substrate is located between the light-emitting elements and the light leakage suppression layer.

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