Light leakage prevention cover plate

Abstract

The utility model discloses a light leakage prevention cover plate, which is characterized in that a black ink layer is arranged on the back surface of a transparent cover plate in a silk-screen manner, three white ink layers are arranged on the surface of the black ink layer in order to improve the shading effect, and a reverse covering black bottom layer is additionally arranged, so that a boss of the transparent cover plate has good shading effect and ink silk-screen and visual effects; the technical effects of simple manufacturing process, low cost and the like are achieved, the problem of light leakage of the boss panel in the prior art can be effectively solved, and the product quality and the user experience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display panels, in particular to a light leakage prevention cover plate. Background Art

[0002] A touch panel, also called a touch screen, is an inductive liquid crystal display device that can receive input signals such as contacts. When the graphic button on the screen is touched, the tactile feedback system on the screen can drive various connection devices according to a pre-programmed program. It can be used to replace the mechanical button panel and create vivid audio and video effects through the liquid crystal display screen. There is a circle of black borders around the display surface of the touch panel. This black border area is also called the BM (Black Matrix) area. The LCD can be divided into the VA area (Visual Area, visible area), AA area (Active Area, effective area) and BM area (Black Matrix). Among them, the VA visible area is all the visible parts on the LCD panel, and the AA effective area is the part that can be programmed to control the display, VA>AA. The BM area is located at the outermost edge of the VA area, which is the so-called black border part of the screen. The function of the BM area is to prevent light leakage from the screen and to be used for the wiring of data signals and scanning signals.

[0003] However, the current existing technology adopts a silk-screen printing solution in which the viewing area is flush with the edge of the cover plate boss. When the cover plate with silk-screen printing looks at the boss from the side, light leaks, the visual effect is poor, and it lacks a certain aesthetics, resulting in a poor user experience when using the product. Utility Model Content

[0004] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a light leakage prevention cover plate, which is set as a VA area inwardly from the transparent cover plate boss, and a black ink layer with a wide circle is screen-printed on the back of the transparent cover plate outside the VA area to calibrate the width of the black edge, and the inner edge line of the black ink layer coincides with the edge line of the VA area of ​​the transparent cover plate. In order to improve the light-shielding effect, three layers of white ink layers are set on the surface of the black ink layer, and a layer of reverse black bottom layer is added on the outside, and the inner edge line of the reverse black bottom layer is located within the edge line of the black ink layer, and the outer edge line of the reverse black bottom layer coincides with the edge line of the transparent cover plate. Although the position of the reverse black bottom layer is uncertain, that is, the inner edge line of the reverse black bottom layer only floats left and right within the edge line of the black ink layer, it is precisely because of the existence of the black ink layer that the transparent cover plate boss has good light-shielding effect, ink screen printing and visual effect, and has technical effects such as simple manufacturing process and low cost, which can effectively solve the light leakage problem of the boss panel in the prior art and improve the product quality and user experience.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0006] A light leakage prevention cover plate, comprising: a transparent cover plate, wherein a boss is arranged on the upper surface of the transparent cover plate, a step structure is formed between the boss and the transparent cover plate, and a VA area is arranged inside the boss of the transparent cover plate;

[0007] A black ink layer, which is a circular ring structure and is disposed on the back of the transparent cover plate, wherein the inner edge of the black ink layer coincides with the edge of the VA area of ​​the transparent cover plate;

[0008] At least two white ink layers are disposed on the surface of the black ink layer;

[0009] The reverse-cover black bottom layer is arranged on the surface of the white ink layer, the inner edge of the reverse-cover black bottom layer is located within the frame of the black ink layer, and the outer edge of the reverse-cover black bottom layer coincides with the edge of the transparent cover plate.

[0010] Furthermore, the white ink layer comprises:

[0011] a first white ink layer, wherein the first white ink layer is a circular ring structure and is disposed on the surface of the black ink layer, wherein the inner edge of the first white ink layer coincides with the inner edge of the black ink layer, and the outer edge of the first white ink layer coincides with the edge of the transparent cover plate;

[0012] a second white ink layer, wherein the second white ink layer is a circular ring structure and is disposed on the surface of the first white ink layer, wherein the inner edge of the second white ink layer coincides with the inner edge of the first white ink layer, and the outer edge of the second white ink layer coincides with the edge of the transparent cover plate;

[0013] A third white ink layer, wherein the third white ink layer is a circular ring structure and is disposed on the surface of the second white ink layer, wherein the inner edge of the third white ink layer coincides with the inner edge of the second white ink layer, and the outer edge of the second white ink layer coincides with the edge of the transparent cover plate.

[0014] Furthermore, the distance between the outer edge of the boss and the outer periphery of the VA region is 0.6-0.8 mm.

[0015] Furthermore, the circular width of the black ink layer is 0.6-0.8 mm.

[0016] Further, the thickness of the first white ink layer is in the range of 6 μm-8 μm, the thickness of the second white ink layer is in the range of 5 μm-7 μm, and the thickness of the third white ink layer is in the range of 5 μm-7 μm.

[0017] Furthermore, the upper surface of the transparent cover plate located on the boss is provided with a coating.

[0018] Furthermore, the coating is one of an AG layer, an AR layer, and an AF layer, or a combination of two or more thereof.

[0019] Furthermore, it also includes a touch layer, and the touch layer is bonded to the back side of the transparent cover plate.

[0020] Furthermore, the touch layer includes a touch function layer, and the touch function layer is electrically connected to the flexible circuit board.

[0021] Furthermore, the touch layer includes two touch function layers, each touch function layer is respectively arranged on the upper surface of the film film, the upper surface of the upper film film is bonded to the lower bottom surface of the transparent cover plate through OCA, and the lower film film is bonded to the upper film film through OCA.

[0022] The utility model has the following beneficial effects: the utility model provides a light leakage prevention cover plate, which is set as a VA area inwardly from the transparent cover plate boss, and a black ink layer with a wide circle is screen-printed on the back of the transparent cover plate outside the VA area to calibrate the width of the black edge, and the inner edge line of the black ink layer coincides with the edge line of the VA area of ​​the transparent cover plate. In order to improve the light-shielding effect, three layers of white ink layers are set on the surface of the black ink layer, and a layer of reverse black bottom layer is added on the outermost, and the inner edge line of the reverse black bottom layer is located within the edge line of the black ink layer, and the outer edge line of the reverse black bottom layer coincides with the edge line of the transparent cover plate. Although the position of the reverse black bottom layer is uncertain, that is, the inner edge line of the reverse black bottom layer only floats left and right within the edge line of the black ink layer, it is precisely because of the existence of the black ink layer that the transparent cover plate boss has good light-shielding effect, ink screen printing and visual effect, and has technical effects such as simple manufacturing process and low cost, which can effectively solve the light leakage problem of the boss panel in the prior art and improve the product quality and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the overall structure of the light leakage prevention cover provided by the utility model;

[0025] Figure 2 A back view of the light leakage prevention cover provided by the utility model;

[0026] Figure 3 A schematic diagram of the overall structure of the light leakage-proof touch panel provided by the utility model;

[0027] Figure 4 The light leakage-proof OGS touch panel provided by the utility model;

[0028] Figure 5 The utility model provides a light leakage-proof GFF touch panel.

[0029] 1. Transparent cover; 11. Boss; 12. Coating; 2. VA area; 3. Black ink layer; 4. White ink layer; 41. First white ink layer; 42. Second white ink layer; 43. Third white ink layer; 5. Back-cover black bottom layer; 6. Touch layer; 61. Touch function layer; 62. Film; 63. OCA; 7. Flexible circuit board. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, 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 accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first", "second", and "third" 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", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] like Figure 1 and Figure 2 As shown, a light leakage prevention cover plate comprises a transparent cover plate 1, wherein a boss 11 is arranged on the upper surface of the transparent cover plate 1, a step structure 32 is formed between the boss 11 and the transparent cover plate 1, and a VA area 2 is arranged inside the boss 11 of the transparent cover plate 1;

[0036] A black ink layer 3, which is a circular ring structure and is disposed on the back of the transparent cover plate 1, wherein the inner edge of the black ink layer 3 coincides with the edge of the VA area 2 of the transparent cover plate 1, and the outer edge of the black ink layer 3 coincides with the edge of the boss 11;

[0037] At least two white ink layers 4 are arranged on the surface of the black ink layer 3;

[0038] The reverse-cover black bottom layer 5 is arranged on the surface of the white ink layer 4, the inner edge of the reverse-cover black bottom layer 5 is located within the edge of the black ink layer 3, and the outer edge of the reverse-cover black bottom layer 5 coincides with the edge of the transparent cover plate 1.

[0039] The utility model sets the VA area 2 inwardly from the boss 11 of the transparent cover plate 1, and prints a circle of black ink layer 3 on the back of the transparent cover plate 1 outside the VA area 2, which is used to calibrate the width of the black edge. The inner edge of the black ink layer 3 coincides with the edge of the VA area 2 of the transparent cover plate 1. In order to improve the light-shielding effect, three layers of white ink are set on the surface of the black ink layer 3, and a layer of reverse black bottom layer 5 is added on the outermost, and the inner edge of the reverse black bottom layer 5 is located within the edge of the black ink layer 3, and the outer edge of the reverse black bottom layer 5 coincides with the edge of the transparent cover plate 1. Although the position of the reverse black bottom layer 5 is uncertain, that is, the inner edge of the reverse black bottom layer 5 only floats left and right within the edge of the black ink layer 3, it is precisely because of the existence of the black ink layer that the boss 11 of the transparent cover plate 1 has good light-shielding effect, ink silk-screening and visual effect, and has technical effects such as simple manufacturing process and low cost, which can effectively solve the problem of light leakage of the boss panel in the prior art and improve the quality of the product and user experience.

[0040] In this embodiment, forming at least two white ink layers 4 on the surface of the black ink layer 3 includes:

[0041] A first white ink layer 41, which is a circular ring structure and is disposed on the surface of the black ink layer 3, wherein the inner edge of the first white ink layer 41 coincides with the inner edge of the black ink layer 3, and the outer edge of the first white ink layer 41 coincides with the edge of the transparent cover plate 1;

[0042] A second white ink layer 42, which is a circular ring structure and is disposed on the surface of the first white ink layer 41, and the inner edge of the second white ink layer 42 coincides with the inner edge of the first white ink layer 41, and the outer edge of the second white ink layer 42 coincides with the edge of the transparent cover plate 1;

[0043] The third white ink layer 43 is a circular ring structure and is arranged on the surface of the second white ink layer 42. The inner edge of the third white ink layer 43 coincides with the inner edge of the second white ink layer 42, and the outer edge of the second white ink layer 42 coincides with the edge of the transparent cover plate 1.

[0044] The width of the black ink layer 3 is preferably in the range of 0.6-0.8 mm, and the thickness is in the range of 5 μm-7 μm, including the end values. The thickness of the first white ink layer 41 is preferably in the range of 6 μm-8 μm, the thickness of the second white ink layer 42 is preferably in the range of 5 μm-7 μm, and the thickness of the third white ink layer 43 is preferably in the range of 5 μm-7 μm.

[0045] Embodiment 2

[0046] like Figure 3As shown, the transparent cover plate 1 is provided with a coating 12 on the upper surface of the boss 11. Since only the surface of the boss 11 is exposed to the outside on the upper surface of the transparent cover plate 1, the coating 12 is provided on the surface of the boss 11 of the transparent cover plate 1. The coating 12 can be one of the AG layer (anti-glare layer), the AR layer (anti-reflection and anti-transmittance layer), and the AF layer (anti-fingerprint layer) or a combination of two or more. When used in combination, it can be stacked up and down, or it can be set in a frame structure. In design, the distance d between the outer edge of the boss 11 and the outer edge of the VA area 2 is set to 0.6-0.8mm, that is, the black edge of the viewing area is 0.6-0.8mm. In order to avoid light leakage, a black ink layer is provided on the bottom surface of the transparent cover plate 1 for light shielding. The width of the black ink layer will not affect the operation of the VA area 2, and can maximize the light shielding effect. In this embodiment, due to the presence of the black ink layer, the transparent cover plate boss has a good light shielding effect, ink silk screen printing and visual effect.

[0047] Embodiment 3

[0048] The anti-light leakage cover plate in this embodiment further includes a touch layer 6 , and the touch layer 6 is bonded to the back side of the transparent cover plate 1 to form an anti-light leakage touch panel.

[0049] Furthermore, the touch panel can adopt OGS technology, such as Figure 4 As shown, the touch layer 6 adopts a single-layer touch function layer 61, the touch function layer is an ITO sensing circuit layer, and the touch function layer is electrically connected to the flexible circuit board 7 to realize the touch function, and the touch function layer is directly made on the transparent cover plate 1, which reduces the thickness of the display screen and facilitates preparation.

[0050] In another preferred implementation manner of this embodiment, the touch panel may also adopt a GFF structure, such as Figure 5 As shown, it includes two touch function layers 61, each touch function layer 61 is respectively arranged on the upper surface of the film film 62, the upper surface of the upper film film 62 is bonded to the lower bottom surface of the transparent cover plate 1 by OCA63, the lower film film 62 and the upper film film 62 are bonded by OCA63, the touch function layer is an ITO sensor circuit layer, and the touch function layer is electrically connected to the flexible circuit board 7 to realize the touch function.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A light leakage prevention cover plate, characterized in that: Comprising: a transparent cover plate (1), wherein a boss (11) is provided on the upper surface of the transparent cover plate (1), a step structure (32) is formed between the boss (11) and the transparent cover plate (1), and a VA area (2) is provided inside the boss (11) of the transparent cover plate (1); A black ink layer (3), the black ink layer (3) being a circular ring structure, and being arranged on the back of the transparent cover plate (1), the inner edge of the black ink layer (3) being coincident with the edge of the VA region (2) of the transparent cover plate (1), and the outer edge of the black ink layer (3) being coincident with the edge of the boss (11); At least two white ink layers (4) are arranged on the surface of the black ink layer (3); A reverse cover black bottom layer (5), the reverse cover black bottom layer (5) is arranged on the surface of the white ink layer (4), the inner edge of the reverse cover black bottom layer (5) is located inside the edge of the black ink layer (3), and the outer edge of the reverse cover black bottom layer (5) coincides with the edge of the transparent cover plate (1).

2. The light leakage prevention cover plate according to claim 1, characterized in that: The white ink layer (4) comprises: a first white ink layer (41), the first white ink layer (41) being a circular ring structure, and being arranged on the surface of the black ink layer (3), the inner edge of the first white ink layer (41) being coincident with the inner edge of the black ink layer (3), and the outer edge of the first white ink layer (41) being coincident with the edge of the transparent cover plate (1); a second white ink layer (42), the second white ink layer (42) being a circular ring structure, and being arranged on the surface of the first white ink layer (41), and the inner edge of the second white ink layer (42) coincides with the inner edge of the first white ink layer (41), and the outer edge of the second white ink layer (42) coincides with the edge of the transparent cover plate (1); A third white ink layer (43), the third white ink layer (43) being a circular ring structure, is arranged on the surface of the second white ink layer (42), the inner edge of the third white ink layer (43) coincides with the inner edge of the second white ink layer (42), and the outer edge of the second white ink layer (42) coincides with the edge of the transparent cover plate (1).

3. The light leakage prevention cover plate according to claim 1, characterized in that: The distance between the outer edge of the boss (11) and the outer periphery of the VA region (2) is 0.6-0.8 mm.

4. The light leakage prevention cover plate according to claim 1, characterized in that: The circular width of the black ink layer (3) is 0.6-0.8 mm.

5. The light leakage prevention cover plate according to claim 2, characterized in that: The thickness of the first white ink layer (41) is in the range of 6 μm to 8 μm, the thickness of the second white ink layer (42) is in the range of 5 μm to 7 μm, and the thickness of the third white ink layer (43) is in the range of 5 μm to 7 μm.

6. The light leakage prevention cover plate according to claim 1, characterized in that: The transparent cover plate (1) is provided with a coating (12) on the upper surface of the boss (11).

7. The light leakage prevention cover plate according to claim 6, characterized in that: The coating (12) is one of an AG layer, an AR layer, and an AF layer, or a combination of two or more thereof.

8. The light leakage prevention cover plate according to claim 1, characterized in that: It also comprises a touch layer (6), wherein the touch layer (6) is bonded to the back side of the transparent cover plate (1).

9. The light leakage prevention cover plate according to claim 8, characterized in that: The touch layer (6) comprises a touch function layer (61), and the touch function layer is electrically connected to the flexible circuit board (7).

10. The light leakage prevention cover plate according to claim 8, characterized in that: The touch layer (6) comprises two touch function layers (61), each touch function layer (61) is arranged on the upper surface of a film film (62), the upper surface of the upper film film (62) is bonded to the lower bottom surface of the transparent cover plate (1) via OCA (63), and the lower film film (62) is bonded to the upper film film (62) via OCA (63).

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