Display module capable of preventing light leakage

Abstract

The utility model discloses a display module capable of preventing light leakage, which comprises a cover plate, an LCD (liquid crystal display) module and a backlight module, the cover plate, the LCD module and the backlight module are sequentially stacked, shading glue for shading an IR (infrared) hole is attached to the backlight module and the LCD module, an upper polaroid of the LCD module corresponds to an IR hole area of the cover plate to form an inward shrinkage clearance area, and the cover plate is provided with a light guide plate. The shading glue is attached to the back face of the backlight module, the side face of the backlight module, the side face of the LCD module and the front face of the LCD module, and the portion, located on the front face of the LCD module, of the shading glue is correspondingly located at the inward shrinkage clearance area. The beneficial effects of the utility model lie in that the shading glue can realize stable attachment, and the problem of light leakage is avoided; according to the optimized structure, the requirement for attachment is lowered, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, and in particular to a display module capable of preventing light leakage. Background Art

[0002] In the prior art, see Figure 4 FOG (Film On Glass, obtained by binding the LCD module 200 to the module FPC) is bonded to the cover plate 100 to form a TFOG. After the TFOG is assembled with the backlight 300 to form a display module, it is necessary to affix light-shielding adhesive 400 to the position of the display module corresponding to the IR hole to prevent light leakage from affecting the corresponding functions of the mobile phone. The affixing process usually includes the following steps: 1. Affixing the light-shielding adhesive 400 to the back of the backlight module 300; 2. Bend the light-shielding adhesive 400 90 degrees and affix it to the sides of the backlight module 300 and the LCD module 200; 3. Since the sides of the LCD module 200 and the backlight module 300 are not in the same plane, it is necessary to use a cotton swab or other tool to smooth and press the light-shielding adhesive 400 so that it adheres to the sides of the backlight module 300 and the LCD module 200. After attachment, the light-shielding adhesive 400 must not warp (not come off the sides of the backlight module 300 or LCD module 200), and the gap between the light-shielding adhesive 400 and the cover plate 100 must be small. However, this is often not the case. The effect of attachment is affected by various factors, such as the material of the light-shielding adhesive, the jig, and the pressing action of the operator. This can lead to problems such as warping or large gaps after the light-shielding adhesive is attached, ultimately failing to achieve the desired light-shielding effect.

[0003] Therefore, the existing technology has defects and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a display module that prevents light leakage.

[0005] The technical solution of the present invention is as follows: The present invention provides a display module for preventing light leakage, comprising: a cover plate, an LCD module and a backlight module, and the cover plate, LCD module and backlight module are stacked in sequence, and a light-shielding glue for IR hole light shielding is attached to the backlight module and the LCD module, and an upper polarizer of the LCD module forms an inward-retracted avoidance area corresponding to the IR hole area of the cover plate, and the light-shielding glue is attached to the back side of the backlight module, the side of the backlight module, the side of the LCD module and the front of the LCD module, and the part of the light-shielding glue located on the front of the LCD module corresponds to the inward-retracted avoidance area.

[0006] Furthermore, a transition arc angle is formed at the junction of the inward-retracted avoidance area and the non-inward-retracted avoidance area of the upper polarizer.

[0007] Furthermore, the portion of the light-shielding adhesive located on the front side of the LCD module is attached to the LCD glass of the LCD module.

[0008] Furthermore, the edge shape of the light-shielding adhesive on a side close to the upper polarizer matches the shape of the upper polarizer.

[0009] Furthermore, the cover plate is bonded to the LCD module via OCA glue, and the OCA glue is bonded to the light-shielding glue located on the front of the LCD module.

[0010] By adopting the above solution, the beneficial effects of the present invention are: the light-shielding adhesive can achieve stable attachment, avoiding light leakage problems; the optimized structure reduces the requirements for attachment, which helps to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a cross-sectional view of an embodiment of the present invention.

[0012] Figure 2 It is a bottom view of an embodiment of the present invention.

[0013] Figure 3 It is a top view of an embodiment of the present invention.

[0014] Figure 4 This is a cross-sectional view of a display module in the prior art with light-shielding adhesive attached. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Please refer to Figures 1 to 3 The present invention provides a display module for preventing light leakage, comprising: a cover plate 1, an LCD module 2 and a backlight module 3, and the cover plate 1, LCD module 2 and backlight module 3 are stacked in sequence, and a light-shielding glue 4 for IR hole light shielding is attached to the backlight module 3 and the LCD module 2, and the upper polarizer 21 of the LCD module 2 forms a retracted avoidance area 211 corresponding to the IR hole area of the cover plate 1, and the light-shielding glue 4 is attached to the back of the backlight module 3, the side of the backlight module 3, the side of the LCD module 2 and the front of the LCD module 2, and the part of the light-shielding glue 4 located on the front of the LCD module 2 corresponds to the retracted avoidance area 211. Specifically, in the LCD module 2, the lower layer of the upper polarizer 21 is the LCD glass 22, so the part of the light-shielding glue 4 located on the front of the LCD module 2 is attached to the LCD glass 22 of the LCD module 2.

[0017] Furthermore, a transition arc angle is formed at the junction of the inward-retracted avoidance area 211 and the non-inward-retracted avoidance area 211 of the upper polarizer 21 to avoid the upper polarizer 21 from being torn.

[0018] Furthermore, the edge shape of the side of the shading glue 4 close to the upper polarizer 21 matches the shape of the upper polarizer 21, so that when attaching, the shape of the upper polarizer 21 is aligned and matched, which helps to improve the efficiency and accuracy of the shading glue 4 attachment.

[0019] Furthermore, the cover plate 1 is bonded to the LCD module 2 via the OCA glue 11, and the OCA glue 11 is bonded to the light-shielding glue 4 located on the front of the LCD module 2. The bonding of the OCA glue 11 further improves the bonding stability of the light-shielding glue 4.

[0020] Since the light-shielding glue 4 needs to be attached to the front of the LCD module 2 in this solution, when the module is assembled, the light-shielding glue 4 is first attached to the LCD module 2, and then the FOG and the cover plate 1 are assembled to obtain TFOG. After that, the light-shielding glue 4 is bent and attached to the back of the backlight module 3. This structural design does not require the operator to smooth or press the light-shielding glue 4 during attachment, thereby improving assembly efficiency.

[0021] In summary, the beneficial effects of this solution are: the light-shielding adhesive can achieve stable attachment and avoid light leakage problems; the optimized structure reduces the requirements for attachment and helps to improve production efficiency.

[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A display module for preventing light leakage, comprising: A cover plate, an LCD module and a backlight module, wherein the cover plate, the LCD module and the backlight module are stacked in sequence, and a light-shielding adhesive for IR hole shading is attached to the backlight module and the LCD module. It is characterized in that an upper polarizer of the LCD module forms an indented avoidance area corresponding to the IR hole area of the cover plate, the light-shielding adhesive is attached to the back side of the backlight module, the side of the backlight module, the side of the LCD module and the front of the LCD module, and the part of the light-shielding adhesive located on the front of the LCD module corresponds to the indented avoidance area.

2. The display module for preventing light leakage according to claim 1, wherein: A transition arc angle is formed at the junction of the inward-retracted avoidance area and the non-inward-retracted avoidance area of the upper polarizer.

3. The display module for preventing light leakage according to claim 1 or 2, characterized in that: The portion of the light-shielding adhesive located on the front side of the LCD module is attached to the LCD glass of the LCD module.

4. The display module for preventing light leakage according to claim 1 or 2, wherein: The edge shape of the light-shielding adhesive on the side close to the upper polarizer matches the shape of the upper polarizer.

5. The display module for preventing light leakage according to claim 1 or 2, characterized in that: The cover plate is bonded to the LCD module via OCA glue, and the OCA glue is bonded to the light-shielding glue located on the front of the LCD module.

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