Liquid crystal module for improving MURA

Abstract

The utility model discloses a liquid crystal module for improving MURA, which comprises a protective cover plate, a liquid crystal panel and a backlight module, the protective cover plate comprises a first fitting area, a spacing area and a second fitting area, the spacing area surrounds outside the first fitting area, and the second fitting area surrounds outside the spacing area; the liquid crystal panel is fully attached to the first attaching area of the protective cover plate, and the backlight module frame is attached to the second attaching area of the protective cover plate. The liquid crystal module can improve the MURA problem of the liquid crystal panel.

Description

Technical Field

[0001] The utility model relates to the field of liquid crystal display, in particular to a liquid crystal module with improved MURA. Background Art

[0002] Since the liquid crystal material has fluidity, when the surface of the liquid crystal panel is squeezed externally, the liquid crystal material inside the liquid crystal panel will be unevenly distributed or flow, resulting in poor display, which is called MURA in the industry.

[0003] When the LCD panel is assembled, its peripheral area is fixed to the backlight module by frame pasting. The backlight module directly acts on the peripheral area of ​​the LCD panel, squeezing the peripheral area of ​​the LCD panel, thereby causing the liquid crystal material in the peripheral area of ​​the LCD panel to gather towards the middle area, thereby causing the MURA problem. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a liquid crystal module, which can improve the MURA problem of a liquid crystal panel.

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

[0006] A liquid crystal module for improving MURA includes a protective cover, a liquid crystal panel and a backlight module, wherein the protective cover includes a first bonding area, a spacing area and a second bonding area, wherein the spacing area surrounds the first bonding area, and the second bonding area surrounds the spacing area; the liquid crystal panel is fully bonded to the first bonding area of ​​the protective cover, and the backlight module frame is bonded to the second bonding area of ​​the protective cover.

[0007] Furthermore, the liquid crystal module further comprises a frame-shaped single-sided adhesive, the frame-shaped single-sided adhesive is attached to a side of the backlight module facing the protective cover plate, the frame-shaped single-sided adhesive corresponds to the peripheral area of ​​the liquid crystal panel; there is a first gap between the frame-shaped single-sided adhesive and the liquid crystal panel along the optical axis direction

[0008] Furthermore, the first gap is 0.045-0.055 mm.

[0009] Furthermore, the liquid crystal panel includes a lower polarizer facing the backlight module, and the width gap between the frame-shaped single-sided adhesive and the lower polarizer is 0.09-1.11 mm.

[0010] Furthermore, the liquid crystal panel includes a lower polarizer facing the backlight module, a second gap is provided between the frame-shaped single-sided adhesive and the lower polarizer along the display plane, and the first gap is connected to the second gap.

[0011] Furthermore, the frame-shaped single-sided adhesive is black single-sided adhesive.

[0012] Furthermore, the backlight module includes a backlight frame, and a light emitting opening, a receiving groove and a bonding platform are formed on the side of the backlight frame facing the protective cover and the liquid crystal panel. The bonding platform surrounds the outside of the receiving groove, and the light emitting opening is opened in the middle of the bottom of the receiving groove; the liquid crystal panel is located in the receiving groove, and the protective cover frame is attached to the bonding platform.

[0013] Furthermore, the liquid crystal module also includes OCA glue, and the liquid crystal panel is fully bonded to the first bonding area of ​​the protective cover plate through the OCA glue.

[0014] Furthermore, the liquid crystal module further comprises a frame-shaped double-sided adhesive, and the backlight module is attached to the second attaching area of ​​the protection cover plate through the frame-shaped double-sided adhesive.

[0015] Furthermore, the frame-shaped single-sided adhesive is black single-sided adhesive.

[0016] The utility model has the following beneficial effects: the liquid crystal module of the utility model adopts the scheme of first fully laminating the liquid crystal panel on the protective cover plate, and then fixing the protective cover plate and the backlight module by frame laminating, so as to fix the relative position between the liquid crystal panel and the backlight module; since the liquid crystal panel is not directly frame-fixed with the backlight module, it will not be locally squeezed by the backlight module, and the liquid crystal panel and the protective cover plate are fully laminating and fixed, and the squeezing force is evenly distributed, so the MURA problem caused by uneven distribution or flow of liquid crystal will not occur; and the spacing area is provided between the first laminating area and the second laminating area of ​​the protective cover plate, so that after the liquid crystal panel and the backlight module are laminated with the protective cover plate, a spacing is left between the two to avoid collision. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a distribution diagram of the first laminating area, the spacing area and the second laminating area of ​​the protective cover plate in the liquid crystal module provided by the utility model.

[0019] Figure 3 for Figure 1 A partial enlarged view of point a in the liquid crystal module shown. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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. Example

[0024] like Figure 1-3 As shown, a liquid crystal module with improved MURA includes a protective cover 10, a liquid crystal panel 20 and a backlight module 30, wherein the protective cover 10 includes a first bonding area 11, a spacing area 12 and a second bonding area 13, wherein the spacing area 12 surrounds the first bonding area 11, and the second bonding area 13 surrounds the spacing area 12; the liquid crystal panel 20 is fully bonded to the first bonding area 11 of the protective cover 10, and the backlight module 30 is frame-bonded to the second bonding area 13 of the protective cover 10.

[0025] The liquid crystal module of the present invention adopts a solution of first fully laminating the liquid crystal panel 20 on the protective cover plate 10, and then fixing the protective cover plate 10 and the backlight module 30 by frame laminating, so as to fix the relative position between the liquid crystal panel 20 and the backlight module 30; since the liquid crystal panel 20 is not directly frame-fixed with the backlight module 30, it will not be locally squeezed by the backlight module 30, and the liquid crystal panel 20 and the protective cover plate 10 are fully laminating and fixed, and the squeezing force is evenly distributed, so the MURA problem caused by uneven distribution or flow of liquid crystal will not occur; and the spacing area 12 is provided between the first laminating area 11 and the second laminating area 13 of the protective cover plate 10, so that after the liquid crystal panel 20 and the backlight module 30 are laminated with the protective cover plate, a spacing is left between the two to avoid collision.

[0026] In this embodiment, the liquid crystal module also includes OCA glue 40 and frame-shaped double-sided adhesive 50. The liquid crystal panel 20 is fully bonded to the first bonding area 11 of the protective cover plate 10 through the OCA glue 40, and the backlight module 30 is frame-bonded to the second bonding area 13 of the protective cover plate 10 through the frame-shaped double-sided adhesive 50.

[0027] The liquid crystal module also includes a frame-shaped single-sided adhesive 60, which is adhered to the side of the backlight module 30 facing the protective cover 10, and the frame-shaped single-sided adhesive 60 corresponds to the outer area of ​​the liquid crystal panel 20; there is a first gap H between the frame-shaped single-sided adhesive 60 and the liquid crystal panel 20 along the optical axis direction.

[0028] The frame-shaped single-sided adhesive 60 is adhesive only on the side facing the backlight module 30, and is not adhesive on the side facing the liquid crystal panel 20. Meanwhile, the frame-shaped single-sided adhesive 60 does not contact the peripheral area of ​​the liquid crystal panel 20, but leaves the first gap H between the frame-shaped single-sided adhesive 60 and the liquid crystal panel 20 to avoid local squeezing of the liquid crystal panel 20. The optical axis direction mentioned here refers to the light emitting direction of the backlight module 30.

[0029] The purpose of setting the frame-shaped single-sided adhesive 60 in the present invention is to fill the gap between the liquid crystal panel 20 and the backlight module 30 to prevent external dust from invading into the backlight module 30 through the gap between the liquid crystal panel 20 and the backlight module 30 .

[0030] In this embodiment, the first gap H is 0.045-0.055 mm. This gap range satisfies the requirement of preventing dust from intruding while allowing the internal gas of the backlight module 30 to flow when it expands and contracts due to heat.

[0031] The liquid crystal panel 20 includes an upper polarizer 21, an upper substrate 22, a lower substrate 23 and a lower polarizer 24. The upper substrate 22 and the lower substrate 23 are relatively fitted together, and liquid crystal material is sealed between the upper substrate 22 and the lower substrate 23; the upper polarizer 21 is fitted to the side of the upper substrate 22 facing the protective cover 10, and the lower polarizer 24 is fitted to the side of the lower substrate 23 facing the backlight module 30.

[0032] A second gap D is provided between the frame-shaped single-sided adhesive 60 and the lower polarizer 24 along the display plane, and the first gap H is connected to the second gap D.

[0033] The four side edges of the lower polarizer 24 are retracted by a certain distance (the lower polarizer 24 does not retract into the display area of ​​the liquid crystal panel 20), thereby forming the second gap D between the frame-shaped single-sided adhesive 60, so as to avoid local squeezing of the lower polarizer 24 of the liquid crystal panel 20. The display plane mentioned here refers to the plane where the display screen of the liquid crystal panel 20 is located, and the display plane is perpendicular to the optical axis direction.

[0034] In this embodiment, the second gap D is 0.09-1.11 mm. This gap range satisfies the requirement of preventing dust from intruding while allowing the internal gas of the backlight module 30 to flow when it expands and contracts due to heat.

[0035] The backlight module 30 includes a backlight frame 31 and an LED light bar (not shown in the figure) arranged in the backlight frame 31, a light guide plate 32 and an optical film assembly 33, the LED light bar 32 is arranged on the light incident side of the light guide plate 32, and the optical film assembly 33 is arranged on the light emitting side of the light guide plate 32.

[0036] The backlight frame 31 is formed with a light emitting opening 311, a receiving groove 312 and a bonding platform 313 on the side facing the protective cover plate 10 and the liquid crystal panel 20. The bonding platform 313 surrounds the outside of the receiving groove 312, and the light emitting opening 311 is opened in the middle of the bottom of the receiving groove 312; the liquid crystal panel 20 is located in the receiving groove 312, and the protective cover plate 10 is framed and bonded to the bonding platform 313.

[0037] The frame-shaped single-sided adhesive 60 is attached to the bottom of the receiving groove 312 .

[0038] Preferably, the frame-shaped single-sided adhesive 60 is a black single-sided adhesive, and the frame-shaped double-sided adhesive 50 is a black double-sided adhesive, so as to absorb and block the leaked light of the backlight module 30 to avoid light leakage at the edge.

[0039] 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 liquid crystal module with improved MURA, comprising a protective cover, a liquid crystal panel and a backlight module, characterized in that: The protective cover includes a first bonding area, a spacing area and a second bonding area, the spacing area surrounds the first bonding area, and the second bonding area surrounds the spacing area; the liquid crystal panel is fully bonded to the first bonding area of ​​the protective cover, and the backlight module frame is bonded to the second bonding area of ​​the protective cover.

2. The liquid crystal module according to claim 1, characterized in that: The liquid crystal module also includes a frame-shaped single-sided adhesive, which is attached to the side of the backlight module facing the protective cover plate, and the frame-shaped single-sided adhesive corresponds to the peripheral area of ​​the liquid crystal panel; there is a first gap between the frame-shaped single-sided adhesive and the liquid crystal panel along the optical axis direction.

3. The liquid crystal module according to claim 2, characterized in that: The first gap is 0.045-0.055 mm.

4. The liquid crystal module according to claim 2 or 3, characterized in that: The liquid crystal panel comprises a lower polarizer facing one side of the backlight module, a second gap is provided between the frame-shaped single-sided adhesive and the lower polarizer along the display plane, and the first gap is connected to the second gap.

5. The liquid crystal module according to claim 4, characterized in that: The width spacing between the frame-shaped single-sided adhesive and the lower polarizer is 0.09-1.11 mm.

6. The liquid crystal module according to claim 2, characterized in that: The frame-shaped single-sided adhesive is a black single-sided adhesive.

7. The liquid crystal module according to claim 1, characterized in that: The backlight module includes a backlight frame, and a light emitting opening, a receiving groove and a bonding platform are formed on the side of the backlight frame facing the protective cover and the liquid crystal panel. The bonding platform surrounds the outside of the receiving groove, and the light emitting opening is opened in the middle of the bottom of the receiving groove; the liquid crystal panel is located in the receiving groove, and the protective cover frame is attached to the bonding platform.

8. The liquid crystal module according to claim 1, characterized in that: The liquid crystal module further includes OCA glue, and the liquid crystal panel is fully bonded to the first bonding area of ​​the protection cover plate through the OCA glue.

9. The liquid crystal module according to claim 1, characterized in that: The liquid crystal module further comprises a frame-shaped double-sided adhesive, and the backlight module is attached to the second attaching area of ​​the protection cover plate through the frame-shaped double-sided adhesive.

10. The liquid crystal module according to claim 9, characterized in that: The frame-shaped double-sided adhesive is black double-sided adhesive.

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