Liquid crystal display screen capable of improving edge light leakage

Abstract

The utility model discloses a liquid crystal display screen for improving edge light leakage, which comprises a lower polaroid, a lower substrate, a liquid crystal layer, an upper substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, the lower substrate is longer than the upper substrate and extends outwards to form a step, a driving IC (integrated circuit) and an FPC (flexible printed circuit) are bound on the upper surface of the lower substrate at the position of the step, and the upper polaroid is arranged on the lower substrate. An inner-ring ITO pattern located in the middle and an outer-ring ITO pattern surrounding the inner-ring ITO pattern are arranged on the upper surface of the lower substrate, a control device is arranged on the FPC, the control device is electrically connected with the outer-ring ITO pattern, and the control device is used for controlling the outer-ring ITO pattern to enable a liquid crystal layer in a corresponding area of the outer-ring ITO pattern to be in an opening or closing state. When the edge displays light leakage, the liquid crystal layer in the area corresponding to the outer ring ITO pattern is controlled to be in a closed state, light is prevented from penetrating through the area, a black shielding area with a certain area is formed between the display area and the edge of the screen, and therefore the edge light leakage is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically, to a liquid crystal display screen for improving edge light leakage. Background Art

[0002] In the liquid crystal display screen with various component matching structures such as FPC, backlight, iron frame and cover plate, due to the structural space extrusion, edge light leakage is likely to occur, especially in the liquid crystal display screen with a relatively thick glass thickness. For example, for a single-piece glass with a thickness of 0.5mm, edge light leakage is more likely to occur. Edge light leakage not only affects the display effect and performance, but also greatly reduces the user experience. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is how to improve edge light leakage, improve the display effect and performance, and enhance the user experience.

[0004] The technical problem to be solved by the utility model is realized through the following technical solutions:

[0005] To solve the above technical problem, the utility model provides a liquid crystal display screen for improving edge light leakage, which includes a lower polarizer, a lower substrate, a liquid crystal layer, an upper substrate, an upper polarizer and a cover plate stacked in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outwards to form a step. A driving IC and an FPC are bonded to the upper surface of the lower substrate at the step. An inner ring ITO pattern located in the middle and an outer ring ITO pattern surrounding the inner ring ITO pattern are arranged on the upper surface of the lower substrate. A control device is arranged on the FPC, and the control device is electrically connected to the outer ring ITO pattern. The control device is used to control the outer ring ITO pattern to make the liquid crystal layer in the corresponding area in an open or closed state.

[0006] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the utility model, a ring groove is opened on the lower surface of the cover plate. The ring groove is located in the non-visible area, and an optical adhesive is coated on the lower surface of the cover plate within the area enclosed by the ring groove.

[0007] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the utility model, the cross-sectional shape of the ring groove is trapezoidal.

[0008] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the utility model, the cross-sectional shape of the ring groove is isosceles trapezoidal.

[0009] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the utility model, the ring groove is an open groove with a wider outer side and a narrower inner side.

[0010] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the present utility model, the depth of the annular groove is 0.1 mm.

[0011] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the present utility model, a surface treatment layer for enhancing the surface roughness is provided on the inner surface of the annular groove.

[0012] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the present utility model, a chamfer is provided at the edge of the annular groove.

[0013] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the present utility model, the chamfer is a rounded chamfer.

[0014] As a preferred embodiment of the liquid crystal display screen for improving edge light leakage provided by the present utility model, the chamfer is a right-angled chamfer.

[0015] The present utility model has the following beneficial effects:

[0016] By controlling the outer ring ITO pattern through the control device to control whether to apply voltage to the liquid crystal in the liquid crystal layer at the outer ring ITO pattern, so that the outer ring ITO pattern can control the liquid crystal layer in the corresponding area to be in an open or closed state. When edge display light leakage occurs, that is, control the liquid crystal layer in the area corresponding to the outer ring ITO pattern to be in a closed state, avoiding light from passing through this area, so that a certain area of black shielding area appears between the display area and the screen edge, thereby improving edge light leakage, improving the display effect and performance, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the solutions in the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a liquid crystal display screen for improving edge light leakage provided by the present utility model.

[0019] Figure 2 is Figure 1 a schematic diagram of the improved structure at the middle cover plate.

[0020] Explanation of the reference numerals in the drawings:

[0021] Lower polarizer 1; lower substrate 2; liquid crystal layer 3; upper substrate 4; upper polarizer 5; cover plate 6; driving IC 7; FPC 8; control device 9;

[0022] Circular groove 61; optical adhesive 62. Detailed implementation manner

[0023] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] The present utility model provides a liquid crystal display screen for improving edge light leakage, which includes a lower polarizer, a lower substrate, a liquid crystal layer, an upper substrate, an upper polarizer, and a cover plate sequentially stacked from bottom to top. The lower substrate is longer than the upper substrate and extends outwards to form a step. A driving IC and an FPC are bonded to the upper surface of the lower substrate at the step. An inner ring ITO pattern located in the middle and an outer ring ITO pattern surrounding the inner ring ITO pattern are provided on the upper surface of the lower substrate. A control device is provided on the FPC, and the control device is electrically connected to the outer ring ITO pattern. The control device is used to control the outer ring ITO pattern so that the liquid crystal layer in the corresponding area is in an open or closed state.

[0027] The outer ITO pattern is controlled by a control device to control whether voltage is applied to the liquid crystal in the liquid crystal layer at the outer ITO pattern, so that the outer ITO pattern can control the liquid crystal layer in the corresponding area to be in an open or closed state. When light leakage occurs at the edge display, that is, the liquid crystal layer in the area corresponding to the outer ITO pattern is controlled to be in a closed state, preventing light from passing through this area, resulting in a certain area of black shielding area between the display area and the screen edge, thereby improving edge light leakage, enhancing the display effect and performance, and improving the user experience.

[0028] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The following describes the present invention in detail with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0029] Embodiment 1, please refer to Figure 1 , a liquid crystal display screen for improving edge light leakage provided by the present invention, which includes a lower polarizer 1, a lower substrate 2, a liquid crystal layer 3, an upper substrate 4, an upper polarizer 5, and a cover plate 6 stacked in sequence from bottom to top. The lower substrate 2 is longer than the upper substrate 4 and extends outward to form a step. A driving IC 7 and an FPC 8 are bonded to the upper surface of the lower substrate 2 at the step. An inner circle ITO pattern located in the middle and an outer circle ITO pattern surrounding the inner circle ITO pattern are provided on the upper surface of the lower substrate 2. A control device 9 is provided on the FPC 8. The control device 9 is electrically connected to the outer circle ITO pattern, and the control device 9 is used to control the outer circle ITO pattern to make the liquid crystal layer 3 in the corresponding area in an open or closed state. By controlling the outer circle ITO pattern with the control device 9, it is possible to control whether voltage is applied to the liquid crystal in the liquid crystal layer 3 at the outer circle ITO pattern, so that the outer circle ITO pattern can control the liquid crystal layer 3 in the corresponding area to be in an open or closed state. When there is no light leakage at the edge display, that is, the liquid crystal layer 3 in the area corresponding to the outer circle ITO pattern is controlled to be in an open state, allowing light to pass through this area; when light leakage occurs at the edge display, that is, the liquid crystal layer 3 in the area corresponding to the outer circle ITO pattern is controlled to be in a closed state, preventing light from passing through this area, resulting in a certain area of black shielding area between the display area and the screen edge, thereby improving edge light leakage, enhancing the display effect and performance, and improving the user experience.

[0030] More preferably, a light leakage detection device can be provided at the cover plate 6. When edge light leakage is detected, the outer circle ITO pattern is automatically controlled to make the liquid crystal layer 3 in the corresponding area in a closed state, further improving the user experience.

[0031] Example 2. Refer to Figure 2 , as a further optimized solution of Example 1. In this example, a ring groove 61 is formed on the lower surface of the cover plate 6. The ring groove 61 is located in the non-visible area. An optical adhesive 62 is coated on the lower surface of the cover plate 6 within the area enclosed by the ring groove 61, that is, the ring groove 61 surrounds the optical adhesive 62. When coating the optical adhesive 62, the excess optical adhesive 62 can overflow into the ring groove 61, preventing the optical adhesive 62 from overflowing to other areas.

[0032] Further, the cross-sectional shape of the ring groove 61 is trapezoidal. More preferably, the cross-sectional shape of the ring groove 61 is isosceles trapezoidal. The ring groove 61 is an open groove with a wider outer width and a narrower inner width, so that the optical adhesive 62 can stay in the ring groove 61 after entering it, preventing the optical adhesive 62 from overflowing to other areas.

[0033] Further, the depth of the ring groove 61 is 0.1 mm, providing sufficient overflow space for the optical adhesive 62 to prevent the optical adhesive 62 from overflowing to other areas.

[0034] Further, a surface treatment layer for increasing the surface roughness is provided on the inner surface of the ring groove 61, so that the optical adhesive 62 can better adhere to the ring groove 61, preventing the optical adhesive 62 from overflowing to other areas.

[0035] Further, a chamfer is provided at the edge of the ring groove 61. The chamfer is a rounded chamfer or a right chamfer. The chamfer can not only remove burrs, but also enable the optical adhesive 62 to flow better into the ring groove 61, preventing the generation of bubbles.

[0036] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Obviously, the embodiments described above are only a part of the embodiments of this application, rather than all the embodiments. The accompanying drawings show the preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of this application more thorough and comprehensive. Although this application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure made by using the content of the specification and drawings of this application, directly or indirectly applied in other related technical fields, is equally within the scope of patent protection of this application.

Claims

1. A liquid crystal display for improving edge light leakage, characterized in that, It includes a lower polarizer, a lower substrate, a liquid crystal layer, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top. The lower substrate is longer than the upper substrate and extends outwards to form a step. A driving IC and an FPC are bonded to the upper surface of the lower substrate at the step. An inner ring ITO pattern located in the middle and an outer ring ITO pattern surrounding the inner ring ITO pattern are provided on the upper surface of the lower substrate. A control device is provided on the FPC. The control device is electrically connected to the outer ring ITO pattern. The control device is used to control the outer ring ITO pattern to make the liquid crystal layer in the corresponding area in an open or closed state.

2. The liquid crystal display screen for improving edge light leakage according to claim 1, wherein, A ring groove is formed on the lower surface of the cover plate. The ring groove is located in the non-visible area. An optical adhesive is coated on the lower surface of the cover plate within the area enclosed by the ring groove.

3. The liquid crystal display screen for improving edge light leakage according to claim 2, wherein The cross-sectional shape of the ring groove is trapezoidal.

4. The liquid crystal display screen for improving edge light leakage according to claim 3, wherein The cross-sectional shape of the ring groove is isosceles trapezoidal.

5. The liquid crystal display screen for improving edge light leakage according to claim 2, wherein The ring groove is an open groove with a wider outer width and a narrower inner width.

6. The liquid crystal display screen for improving edge light leakage according to claim 2, characterized in that, The depth of the ring groove is 0.1 mm.

7. The liquid crystal display screen for improving edge light leakage according to claim 2, wherein, A surface treatment layer for increasing the surface roughness is provided on the inner surface of the ring groove.

8. The liquid crystal display screen for improving edge light leakage according to claim 2, wherein A chamfer is provided at the edge of the ring groove.

9. The liquid crystal display screen for improving edge light leakage according to claim 8, wherein, The chamfer is a rounded chamfer.

10. The liquid crystal display screen for improving edge light leakage according to claim 8, characterized in that, The chamfer is a right chamfer.

Images