Light leakage inhibiting layer and display panel

Abstract

The invention discloses a light leakage inhibiting layer and a display panel. The light leakage inhibiting layer comprises a plurality of columnar structures which are separated from one another. In a top view of the light leakage suppression layer, the columnar structures conform to the following arrangement rule: each of the columnar structures and other columnar structures with a fixed distance A between the columnar structures are connected through a plurality of virtual connecting lines to form a plurality of quasi polygons, and the virtual connecting lines have the same length; the columnar structures are located at corners and / or edges of the quasi-polygon, and the quasi-polygon comprises 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 display device that allows users to simultaneously see the image information displayed and the background information behind the display panel. Such devices have a wide range of applications, such as vending machine windows, car windows, home windows, and store windows.

[0003] When the display panel displays an image, the light emitted by the internal light source may be reflected inside the display panel, causing light leakage from the back of the display panel. Especially when the viewing angle is large, the image displayed by the display panel may be reflected at the interface between the display panel and the air, and these reflected lights may leak from the back of the display panel, thereby affecting the visual effect on the back. Summary of the invention

[0004] The 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 columnar structures separated from each other. In a top view of the light leakage suppression layer, the columnar structures conform to the following arrangement rule: each of the columnar structures and the other of all 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, and wherein the columnar structures are located at corners and / or sides of the quasi-polygons, and the quasi-polygons include a plurality of different shapes.

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

[0007] Based on the above, the problem of uneven back-side light leakage at different azimuth angles can be improved by adjusting the arrangement of the columnar structure. 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] Fig. 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 at each tilt angle θ and each azimuth angle Backside light leakage intensity distribution diagram on .

[0017] Fig. 9 To include Figure 2 The display panel of the light leakage suppression layer at each tilt angle θ and each azimuth angle Backside light leakage intensity distribution diagram on .

[0018] Fig.10 To include Figure 3 The display panel of the light leakage suppression layer at each tilt angle θ and each azimuth angle Backside light leakage intensity distribution diagram on .

[0019] Fig.11 To include Figure 4 The display panel of the light leakage suppression layer at each tilt angle θ and each azimuth angle Backside light leakage intensity distribution diagram on .

[0020] Fig.12 To include Figure 5 The display panel of the light leakage suppression layer at each tilt angle θ and each azimuth angle Backside light leakage intensity distribution diagram on .

[0021] Fig.13 To include Figure 6 The display panel of the light leakage suppression layer at each tilt angle θ and each azimuth angle Backside light leakage intensity distribution diagram on .

[0022] Fig.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] Fig. 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] Fig.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] Fig. 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 schematic diagram 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, and 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), polyethyleneterephthalate (PET), polyethylenenaphthalate (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 micrometers to 1100 micrometers. In some embodiments, the second transparent substrate 500 can be omitted.

[0051] In some embodiments, the 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 components and / or multiple passive components, and the active components 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, for example, 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 the light emitting element 300 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, optically clear adhesive (OCA), optical clear resin (OCR) or other similar materials.

[0054] In some embodiments, the refractive index of the optical adhesive layer 400 is about 1.5, and the thickness is about 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 structure 110 is 300 microns to 700 microns, and the width W of the columnar structure 110 is 75 microns to 125 microns. In some embodiments, the columnar structure 110 includes a light absorbing material for absorbing visible light, such as a black resin, a black metal, a black oxide, or other suitable materials. In some embodiments, the shape of the columnar structure 110 includes a straight columnar shape or a funnel columnar shape of a cylinder or an elliptical column.

[0057] In some embodiments, a transparent layer 120 may be optionally included around the columnar structure 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 structure 110 and does not cover the top and bottom surfaces of the columnar structure 110, but the present invention is not limited thereto. In other embodiments, the transparent layer 120 covers the top and / or bottom surfaces of the columnar structure 110. In some embodiments, the material of the transparent layer 120 includes glass, oxide, organic material, or other suitable transparent materials.

[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 problem of uneven distribution of back-side light leakage at different azimuth angles. For example, in the first direction D1, the columnar structures 110 are provided with two or more pitches (e.g., pitch P1 and pitch P2), thereby reducing the regularity of the columnar structures 110.

[0059] In the present embodiment, the display panel 10 is a transparent display panel, and the user at 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 the present embodiment, the light emitted by the light-emitting element 300 in the display panel 10 is reflected in 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 gap of the columnar structure 110 and leaves from the back side of the display panel 10, resulting in the problem of back side light leakage. In the embodiment of the present invention, the uniformity of the back side light leakage is improved by adjusting the arrangement of the columnar structure 110 to avoid obvious back side light leakage at a specific azimuth angle.

[0060] The following will be passed Figures 2 to 7 Various embodiments of the light leakage suppression layer are described below. Figures 2 to 7 In the embodiment, each of the columnar structures 110 and all other columnar structures with a fixed spacing A therebetween are connected by a plurality of virtual lines DL to form a plurality of quasi-polygons HPA to HPQ having a plurality of different shapes. The columnar structures 110 are located on the corners and / or sides of the quasi-polygons, so that the length of each side of each quasi-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 quasi-polygons in the light leakage suppression layer include three or more different shapes, thereby improving the uniformity of back-side light leakage. In a preferred embodiment, at least two shapes of the quasi-polygons in the light leakage suppression layer are shapes in which the length of each side is equal, thereby further improving the uniformity of back-side light leakage.

[0061] In this article, the quasi-polygon and the virtual line DL are only used to illustrate the arrangement rules of the columnar structure 110, and are not actually existing components. In addition, there are no other quasi-polygons within the range of each quasi-polygon described in this article, and the quasi-polygons are distributed in the light leakage suppression layer in a planar paving manner. The sum of the corresponding multiple angles of the quasi-polygons close together around a columnar structure 110 is 360 degrees.

[0062] Please refer to Figure 2 In the top view of the light leakage suppression layer 100A, the columnar structures 110 conform to the following arrangement rule: each of the columnar structures 110 and the other columnar structures 110 with a fixed spacing A therebetween are connected by a plurality of virtual lines DL to form a plurality of quasi-polygons HPA, HPB, HPC. The columnar structures 110 are located at the corners of the quasi-polygons HPA, HPB, HPC, so that the length of each side of each of the quasi-polygons HPA, HPB, HPC is equal (i.e., the length of each side is the fixed spacing A).

[0063] exist Figure 2In the embodiment, the quasi-polygon HPA, HPB, HPC includes a plurality of different shapes. For example, the quasi-polygon HPA, HPB, HPC includes three different shapes, wherein the quasi-polygon HPA is a pentagon, the quasi-polygon HPB is a first prism, and the quasi-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 including a plurality of repeating units RA. In this article, the repeating unit RA may also be referred to as a minimum repeating unit. Each repeating unit RA includes more than one columnar structure 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 in the shape of a rectangle.

[0065] exist Figure 2 In the embodiment, the array of columnar structures 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 surface (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 the top view of the light leakage suppression layer 100B, the columnar structures 110 conform to the following arrangement rule: each of the columnar structures 110 and the other columnar structures 110 with a fixed spacing A therebetween are connected by a plurality of virtual lines DL to form a plurality of quasi-polygons HPD, HPE, HPF. The columnar structures 110 are located at the corners of the quasi-polygons HPD, HPE, HPF, so that the length of each side of each of the quasi-polygons HPD, HPE, HPF is equal (i.e., the length of each side is the fixed spacing A).

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

[0068] exist Figure 3 In the embodiment of the present invention, the quasi-polygons HPD, HPE, and HPF are arranged into an array including a plurality of repeating units RB. In this article, the repeating unit RB may also be referred to as a minimum repeating unit. Each repeating unit RB includes more than one columnar structure 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 shape of the repeating unit RB is a square.

[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 surface (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 the top view of the light leakage suppression layer 100C, the columnar structures 110 conform to the following arrangement rule: each of the columnar structures 110 and the other columnar structures 110 with a fixed spacing A therebetween are connected by a plurality of virtual lines DL to form a plurality of quasi-polygons HPG, HPH, HPI. The columnar structures 110 are located at the corners of the quasi-polygons HPG, HPH, HPI, so that the length of each side of each of the quasi-polygons HPG, HPH, HPI is equal (i.e., the length of each side is the fixed spacing A).

[0071] exist Figure 4 In the embodiment, the quasi-polygon HPG, HPH, HPI includes a plurality of different shapes. For example, the quasi-polygon HPG, HPH, HPI includes 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 of the present invention, the quasi-polygons HPG, HPH, and HPI are arranged into an array including a plurality of repeating units RC. In this article, the repeating unit RC may also be referred to as a minimum repeating unit. Each repeating unit RC includes more than one columnar structure 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 shape of the repeating unit RC is a parallelogram including an acute angle of 60 degrees.

[0073] exist Figure 4 In the embodiment, the array of columnar structures 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 surface (in the figure) as the rotation axis, an array of substantially identical columnar structures 110 can be obtained.

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

[0075] exist Figure 5 In the embodiment, the quasi-polygons HPJ, HPK, HPL, HPM, and HPN include a plurality of different shapes. For example, the quasi-polygons HPJ, HPK, HPL, HPM, and HPN include five different shapes, wherein the quasi-polygon HPJ is a pentagon, the quasi-polygon HPK is a first quadrilateral, the quasi-polygon HPL is a second quadrilateral, the quasi-polygon HPM is a first heptagon, and the quasi-polygon 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 of the present invention, the quasi-polygons HPJ, HPK, HPL, HPM, and HPN are arranged into an array including 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 includes more than one columnar structure 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 columnar structures 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 surface (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 the top view of the light leakage suppression layer 100E, the columnar structures 110 conform to the following arrangement rule: each of the columnar structures 110 and the other columnar structures 110 with a fixed spacing A therebetween are connected by a plurality of virtual lines DL to form a plurality of quasi-polygons HPO, HPP. The columnar structures 110 are located at the corners of the quasi-polygons HPO, HPP, so that the length of each side of each of the quasi-polygons HPO, HPP is equal (i.e., the length of each side is the fixed spacing A).

[0079] exist Figure 6In the embodiment, the quasi-polygon HPO, HPP includes a plurality of different shapes. For example, the quasi-polygon HPO, HPP includes 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 of the present invention, the quasi-polygons HPO and HPP are arranged into an array including 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 includes 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 columnar structures 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 surface (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 the top view of the light leakage suppression layer 100F, the columnar structures 110 conform to the following arrangement rule: each of the columnar structures 110 and the other columnar structures 110 with a fixed spacing A therebetween are connected by a plurality of virtual lines DL to form a plurality of quasi-polygons HPQ. The columnar structures 110 are located at the corners of the quasi-polygon HPQ, so that the length of each side of each of the quasi-polygons HPQ is equal (i.e., the length of each side is the fixed spacing A).

[0083] exist Figure 7 In the embodiment of the present invention, 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 quasi-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] Fig. 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 Fig. 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 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 back-side light leakage at the 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 They include Figures 2 to 6 The display panel of the light leakage suppression layer at each tilt angle θ and each azimuth angle 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 , can be found in Figures 9 to 13 The distribution of the light leakage at the middle 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, it is possible to avoid the leakage at a specific azimuth angle. There is an obvious light leakage problem.

[0090] Fig.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. Fig. 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 Fig.14A and Fig. 14BVarious parameters of the display panels of Embodiment 1, Embodiment 2 and Embodiment 3 are shown in Table 1.

[0092] Table 1

[0093]

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

[0095] Comparing the first to third embodiments, it can be found that the Figure 2 and Figure 3 By arranging the columnar structure in a manner, the relative light leakage peak in direction x can be effectively reduced.

[0096] Fig.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. Fig. 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 Fig.15A and Fig. 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 Fig.15A , Fig. 15B And in Example 4 of Table 2, the columnar structure is according to Figure 7 Arrange in the manner shown. Fig.15A , Fig. 15B And in Example 5 of Table 2, the columnar structure is according to Figure 2 Arrange in the manner shown. Fig.15A , Fig. 15B And in Example 6 of Table 2, the columnar structure is according to Figure 3 Arrange in the manner shown.

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

[0103] In summary, in an embodiment of the present invention, in a top view of the light leakage suppression layer, each of the columnar structures and the other of all the 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 quasi-polygons include a plurality of different shapes. By adjusting the arrangement of the columnar structures, the uniformity of the backside light leakage can be improved. In a preferred embodiment, the quasi-polygon includes three or more different shapes, and at least two of the shapes are shapes in which the length of each side is equal, thereby further improving the problem of backside light leakage.

Claims

1. A light leakage suppression layer, comprising: A plurality of columnar structures, wherein the columnar structures are separated from each other, wherein in a top view of the light leakage suppression layer, the columnar structures conform to the following arrangement rule: 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 quasi-polygons, wherein the virtual lines have equal lengths, and wherein the columnar structures are located at corners and / or sides of the quasi-polygons, and the quasi-polygons include a variety of different shapes. 2 . The light leakage suppression layer as claimed in claim 1 , wherein all of the columnar structures are located at a plurality of corners of the quasi-polygons, and wherein the length of each side of each of the quasi-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 are shapes in which each side has the same 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 described in claim 1, wherein the quasi-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 the area of ​​each of the first quadrilaterals is different from the area of ​​each of the second quadrilaterals, and the area of ​​each of the first heptagons is different from the 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 according to claim 1, further comprising: A transparent layer is located between the columnar structures. 10 . The light leakage suppression layer as claimed in claim 1 , wherein a height of each of the columnar structures is 300 micrometers to 700 micrometers, a width of each of the columnar structures is 75 micrometers to 125 micrometers, and the columnar structures comprise light absorbing materials for absorbing visible light. 11 . 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. 12 . The light leakage suppression layer as claimed in claim 1 , wherein the columnar structures have different pitches in a first direction.

13. 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 12.

14. The display panel according to claim 13, 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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