Liquid crystal display module capable of avoiding local watermarks

Abstract

The utility model discloses a liquid crystal display module capable of avoiding local watermarks, which comprises a protective cover plate, a liquid crystal panel and a backlight module, the liquid crystal panel is arranged above the backlight module, the protective cover plate is arranged above the liquid crystal panel, and the protective cover plate is arranged above the liquid crystal panel. The protective cover plate is adhered and fixed on the backlight module through a square foam frame adhesive, so that an air spacing layer is formed between the protective cover plate and the liquid crystal panel; the liquid crystal panel comprises an upper polaroid, and the upper polaroid is located on the side facing the protective cover plate. And the lower surface of the protective cover plate is frosted to form a concave-convex microstructure. According to the liquid crystal display module, the interference phenomenon between the upper polaroid of the liquid crystal panel and the protective cover plate is avoided, and then local watermarks are eliminated.

Description

Technical Field

[0001] This utility model relates to display technology, and more particularly to a liquid crystal display module. Background Technology

[0002] The liquid crystal display module is formed by stacking three parts in sequence: a protective cover plate, a liquid crystal panel, and a backlight module. The protective cover plate is fixed to the backlight module by a U-shaped foam frame adhesive to form an air gap layer between it and the liquid crystal panel.

[0003] However, the side of the liquid crystal panel facing the protective cover is an upper polarizer, and the upper surface of the upper polarizer and the lower surface of the protective cover are both smooth surfaces. When the two surfaces are in contact or close to each other, light interference will occur, resulting in local watermarks, also known as Newton's rings. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a liquid crystal display module that avoids interference between the upper polarizer of the liquid crystal panel and the protective cover plate, thereby eliminating local watermarks.

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

[0006] A liquid crystal display module for avoiding localized watermarks includes a protective cover, a liquid crystal panel, and a backlight module. The liquid crystal panel is disposed above the backlight module, and the protective cover is disposed above the liquid crystal panel. The protective cover is fixed to the backlight module by a U-shaped foam frame adhesive to form an air gap layer between it and the liquid crystal panel. The liquid crystal panel includes an upper polarizer located on the side facing the protective cover. The lower surface of the protective cover is frosted to form a textured microstructure.

[0007] Furthermore, the lower surface of the protective cover includes a frosted area and a smooth area, the smooth area surrounding the frosted area, the frosted area corresponding to the upper polarizer, and the smooth area corresponding to the foam frame adhesive; the concave-convex microstructure is formed within the frosted area.

[0008] Furthermore, the roughness of the uneven microstructure is between 0.01 and 5 μm, and the transmittance is 90% or higher.

[0009] Furthermore, the concave-convex microstructure includes several protrusions and several grooves, with the protrusions and grooves evenly and alternately distributed.

[0010] Furthermore, the height of the protrusion and the depth of the groove are 1-10 μm.

[0011] Furthermore, the width of the protrusion and the width of the groove are 50-100 μm.

[0012] Furthermore, the liquid crystal panel also includes an upper substrate, a lower substrate, and a lower polarizer. The upper substrate and the lower substrate are disposed in a sealed manner relative to each other. The upper polarizer is disposed on the upper surface of the upper substrate, and the lower polarizer is disposed on the lower surface of the lower substrate.

[0013] Furthermore, the backlight module includes a frame, a light strip, and a light guide plate. The light strip and the light guide plate are disposed within the frame, and the light strip is located on the side of the light guide plate. The protective cover is fixed to the frame of the backlight module by means of foam frame adhesive.

[0014] Furthermore, the liquid crystal panel is bonded and fixed to the frame of the backlight module by a U-shaped light-shielding tape, and corresponds to the light guide plate.

[0015] Furthermore, a first peripheral platform and a second peripheral platform are formed on the upper surface of the frame. The first peripheral platform surrounds the light guide plate, and the second peripheral platform surrounds the first peripheral platform. The first peripheral platform is lower than the second peripheral platform. The liquid crystal panel is bonded and fixed on the first peripheral platform, and the protective cover is bonded and fixed on the second peripheral platform.

[0016] The present invention has the following beneficial effects: The liquid crystal display module of the present invention improves the roughness of the lower surface of the protective cover by frosting the lower surface of the protective cover, so that light is scattered after passing through the lower surface of the protective cover, thereby reducing light interference. Furthermore, since the lower surface of the protective cover forms the concave-convex microstructure after frosting, even if there is contact between the upper surface of the upper polarizer and the lower surface of the protective cover, light interference can be effectively reduced, thereby eliminating local watermarks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the stacked structure of the liquid crystal display module provided by this utility model.

[0018] Figure 2 for Figure 1 A magnified view of part A in the liquid crystal display module shown.

[0019] Figure 3 A schematic diagram of the planar structure of the protective cover plate in the liquid crystal display module provided by this utility model.

[0020] Figure 4 This is a schematic diagram of the stacked structure of another liquid crystal display module provided by this utility model. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings. Throughout the drawings, the same or similar reference numerals denote 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1

[0026] like Figure 1As shown, a liquid crystal display module that avoids local watermarks includes a protective cover plate 1, a liquid crystal panel 2, and a backlight module 3. The liquid crystal panel 2 is disposed above the backlight module 3, and the protective cover plate 1 is disposed above the liquid crystal panel 2. The protective cover plate 1 is bonded and fixed to the backlight module 3 by a U-shaped foam frame adhesive 4 to form an air gap layer 6 between it and the liquid crystal panel 2. The liquid crystal panel 2 includes an upper polarizer 21, which is located on the side facing the protective cover plate 1. The lower surface of the protective cover plate 1 is frosted to form a concave-convex microstructure 11.

[0027] The liquid crystal display module of this utility model improves the roughness of the lower surface of the protective cover plate 1 by frosting it, so that light is scattered after passing through the lower surface of the protective cover plate 1, thereby reducing light interference. Furthermore, since the lower surface of the protective cover plate 1 forms the concave-convex microstructure 11 after frosting, even if there is contact between the upper surface of the upper polarizer 21 and the lower surface of the protective cover plate 1, light interference can be effectively reduced, thereby eliminating local watermarks.

[0028] Preferably, the roughness of the uneven microstructure 11 is between 0.01-5 μm, and the transmittance is 90% or higher. Specifically, such as... Figure 2 As shown, the concave-convex microstructure 11 includes a plurality of protrusions 111 and a plurality of grooves 112, wherein each protrusion 111 and each groove 112 is evenly and alternately distributed, wherein the height of the protrusion 111 and the depth of the groove 112 are 1-10 μm, and the width of the protrusion 111 and the width of the groove 112 are 50-100 μm.

[0029] The foam frame adhesive 4 can be a square-shaped integral structure, or it can be formed by splicing together four straight foam adhesive strips end to end.

[0030] The protective cover 1 is a glass cover, and preferably, after the frosting process is performed to form the concave and convex microstructure 11, it is then tempered to form tempered glass.

[0031] To prevent the uneven microstructure 11 from affecting the adhesion between the protective cover 1 and the foam frame adhesive 4, such as Figure 3 As shown, the lower surface of the protective cover plate 1 includes a frosted area 12 and a smooth area 13. The smooth area 13 surrounds the frosted area 12. The frosted area 12 corresponds to the upper polarizer 21, and the smooth area 13 corresponds to the foam frame adhesive 4. The concave-convex microstructure 11 is formed in the frosted area 12.

[0032] The liquid crystal panel 2 further includes an upper substrate 22, a lower substrate 23 and a lower polarizer 24. The upper substrate 22 and the lower substrate 23 are disposed in a sealed manner relative to each other. The upper polarizer 21 is disposed on the upper surface of the upper substrate 22 and the lower polarizer 24 is disposed on the lower surface of the lower substrate 23.

[0033] like Figure 4 As shown, the backlight module 3 includes a frame 31, a light strip 32, and a light guide plate 33. The light strip 32 and the light guide plate 33 are disposed within the frame 31, and the light strip 32 is located on the side of the light guide plate 33. The protective cover plate 1 is bonded and fixed to the frame 31 of the backlight module 3 by the foam frame adhesive 4.

[0034] Preferably, the liquid crystal panel 2 is bonded and fixed to the frame 31 of the backlight module 3 by a U-shaped light-shielding tape 5, and corresponds to the light guide plate 33.

[0035] The light-blocking tape 5 can also be a square-shaped integral structure, or it can be formed by splicing together four straight light-blocking tapes end to end.

[0036] Specifically, a first peripheral platform 311 and a second peripheral platform 312 are formed on the upper surface of the frame 31. The first peripheral platform 311 surrounds the light guide plate 33, and the second peripheral platform 312 surrounds the first peripheral platform 311. The first peripheral platform 311 is lower than the second peripheral platform 312. The liquid crystal panel 2 is bonded and fixed to the first peripheral platform 311, and the protective cover plate 1 is bonded and fixed to the second peripheral platform 312, so that there is a height difference between the protective cover plate 1 and the liquid crystal panel 2, thereby forming the air gap layer 6.

[0037] The foam frame adhesive 4 is preferably black foam, and the light-shielding tape 5 is preferably black tape, in order to prevent light leakage between the protective cover plate 1 and the frame 31, and between the liquid crystal panel 2 and the frame 31.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present utility model, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the present utility model.

Claims

1. A liquid crystal display module for avoiding localized watermarks, comprising a protective cover, a liquid crystal panel, and a backlight module, wherein the liquid crystal panel is disposed above the backlight module, the protective cover is disposed above the liquid crystal panel, and the protective cover is fixed to the backlight module by means of a U-shaped foam frame adhesive to form an air gap layer between the protective cover and the liquid crystal panel; the liquid crystal panel includes an upper polarizer located on the side facing the protective cover; characterized in that, The lower surface of the protective cover is sanded to form a textured microstructure.

2. The liquid crystal display module according to claim 1, characterized in that, The lower surface of the protective cover includes a frosted area and a smooth area. The smooth area surrounds the frosted area. The frosted area corresponds to the upper polarizer, and the smooth area corresponds to the foam frame adhesive. The uneven microstructure is formed within the frosted area.

3. The liquid crystal display module according to claim 1 or 2, characterized in that, The roughness of the uneven microstructure is between 0.01 and 5 μm, and the transmittance is 90% or higher.

4. The liquid crystal display module according to claim 1, characterized in that, The concave-convex microstructure includes several protrusions and several grooves, with the protrusions and grooves evenly and alternately distributed.

5. The liquid crystal display module according to claim 4, characterized in that, The height of the protrusion and the depth of the groove are 1-10 μm.

6. The liquid crystal display module according to claim 4 or 5, characterized in that, The width of the protrusion and the width of the groove are 50-100 μm.

7. The liquid crystal display module according to claim 1, characterized in that, The liquid crystal panel further includes an upper substrate, a lower substrate, and a lower polarizer. The upper substrate and the lower substrate are sealed relative to each other. The upper polarizer is disposed on the upper surface of the upper substrate, and the lower polarizer is disposed on the lower surface of the lower substrate.

8. The liquid crystal display module according to claim 1, characterized in that, The backlight module includes a frame, a light strip, and a light guide plate. The light strip and the light guide plate are disposed within the frame, and the light strip is located on the side of the light guide plate. The protective cover is fixed to the frame of the backlight module by means of foam frame adhesive.

9. The liquid crystal display module according to claim 8, characterized in that, The LCD panel is fixed to the frame of the backlight module by a U-shaped light-shielding tape and corresponds to the light guide plate.

10. The liquid crystal display module according to claim 9, characterized in that, The upper surface of the frame has a first peripheral platform and a second peripheral platform. The first peripheral platform surrounds the light guide plate, and the second peripheral platform surrounds the first peripheral platform. The first peripheral platform is lower than the second peripheral platform. The liquid crystal panel is bonded and fixed to the first peripheral platform, and the protective cover is bonded and fixed to the second peripheral platform.

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