Shading glue structure in backlight module

Abstract

The shading glue structure in the backlight module comprises a backlight module body, the backlight module body comprises an optical film and rectangular-ambulatory-plane shading glue attached to the optical film, four sets of vertex angles in an opening of the shading glue are all round corners, and reflection assemblies corresponding to the round corners are arranged on one side wall in the opening of the shading glue. The reflection assemblies are located at the two fillet edge areas close to the backlight source after being folded, each reflection assembly comprises a connecting part connected with the inner side wall of the opening of the shading glue, an arc-shaped part located in the opening of the shading glue is arranged on each connecting part, and a notch is obliquely formed in the connecting position of each connecting part and the corresponding arc-shaped part. The arc radius of the arc-shaped part is slightly larger than that of the fillet. According to the invention, the phenomenon of dark areas is avoided, the brightness of emitted light is uniform, the optical effect is improved, and meanwhile, the waste of materials can be reduced.

Description

Technical Field

[0001] This invention relates to the field of display modules, and particularly to a light-shielding adhesive structure in a backlight module. Background Technology

[0002] In the backlight module industry, the brightness and uniformity of the emitted light are crucial indicators. The role of the light-shielding adhesive in the backlight module is to separate the light-emitting and non-light-emitting areas within the display module. P65BW and X653-2 are double-sided adhesive tapes made with a special process using a black and white dual-color film as the base material, laminated with a special black and white PET substrate. They offer excellent overall performance, possessing both light-shielding and reflective functions. The white side absorbs almost no light, while the black side provides excellent light-shielding, with no pinholes allowing light to pass through. They are suitable for fixing LCDs and backlights.

[0003] Black and white double-sided tape is often used to create bright lines at the edges of the light-emitting and non-light-emitting areas of the display module, leading to its gradual phasing out. However, with the development of LCD screens, some displays have rounded corners in the display area. This causes problems such as dark areas and uneven light emission at the boundary between the light-emitting and non-light-emitting areas near the two rounded corners on the backlight side, due to light scattering blind spots, affecting the user experience.

[0004] Therefore, a backlight module structure with patent number CN208818987U has been developed. Although it can effectively solve the above problems, it has the following defects in use: the U-shaped light-shielding adhesive will cause a lot of material waste in the middle. At the same time, the light is reflected by the tape, which will lead to a lot of material waste in actual operation. Therefore, we need a solution that can recycle the material in the middle of the light-shielding adhesive to replace the tape for light reflection in order to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a light-shielding adhesive structure for a backlight module.

[0006] The technical problem of this invention is mainly solved by the following technical solution:

[0007] A light-shielding adhesive structure in a backlight module includes a backlight module body, wherein the backlight module body includes an optical film and a U-shaped light-shielding adhesive attached to the optical film.

[0008] The four apex corners inside the opening of the light-shielding adhesive are all rounded. A corresponding rounded reflective component is provided on one side wall inside the opening of the light-shielding adhesive. After folding, the reflective component is located at the two rounded edge areas close to the backlight. The reflective component includes a connecting part that connects to the inner side wall of the opening of the light-shielding adhesive. An arc-shaped part is provided on the connecting part that is located inside the opening of the light-shielding adhesive. A cut is obliquely provided at the connection between the connecting part and the arc-shaped part. The arc radius of the arc-shaped part is slightly larger than the arc radius of the rounded corner.

[0009] Preferably, the backlight source is an LED lamp.

[0010] Preferably, the light-shielding adhesive and the reflective component are integrally formed, and the opening in the middle of the light-shielding adhesive and the reflective component are integrally stamped by a stamping die.

[0011] Preferably, scratches are provided on both the upper and lower ends of the connection between the connecting part and the side wall of the opening in the middle of the light-shielding adhesive, and the scratches do not penetrate the connection between the side wall of the opening in the middle of the light-shielding adhesive and the connecting part.

[0012] Preferably, the connection between the connecting part and the side wall of the opening in the middle of the light-shielding adhesive is used as the fold line, so that the connecting part and the arc-shaped part are folded on the side wall outside the opening in the middle of the light-shielding adhesive. The arc-shaped part rotates with the connection point between it and the connecting part as the center and opens the cut. The rotated arc-shaped part is attached to the rounded corner corresponding to the opening in the middle of the light-shielding adhesive.

[0013] The beneficial effects of the present invention are: by recycling the residual material in the opening in the middle of the light-shielding adhesive to form a reflective component, the backlight module can emit light uniformly through the reflection of the arc-shaped part in the reflective component, thus avoiding the phenomenon of dark areas. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the folded structure of the reflective component in this invention;

[0015] Figure 2 This is a schematic diagram of the structure of the reflective component before folding in this invention;

[0016] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0017] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0018] In the diagram: 1. Optical film, 2. Light-shielding adhesive, 3. Rounded corner, 4. Reflective component, 41. Connecting part, 42. Arc-shaped part, 43. Cutout, 5. Backlight. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] A light-shielding adhesive structure in a backlight module includes a backlight module body, wherein the backlight module body includes an optical film 1 and a U-shaped light-shielding adhesive 2 attached to the optical film 1.

[0021] The four apex corners inside the opening of the light-shielding adhesive 2 are all rounded corners 3. A reflective component 4 corresponding to the rounded corner 3 is provided on one side wall inside the opening of the light-shielding adhesive 2. After folding, the reflective component 4 is located at the edge area of ​​the two rounded corners 3 near the backlight 5. The reflective component 4 includes a connecting part 41 connected to the inner side wall of the opening of the light-shielding adhesive 2. An arc-shaped part 42 located inside the opening of the light-shielding adhesive 2 is provided on the connecting part 41. A cut 43 is obliquely provided at the connection between the connecting part 41 and the arc-shaped part 42. The arc radius of the arc part 42 is slightly larger than the arc radius of the rounded corner 3.

[0022] In this embodiment, the backlight 5 is an LED light.

[0023] In this embodiment, the light-shielding adhesive 2 and the reflective component 4 are integrally formed and made of the same material. The opening in the middle of the light-shielding adhesive 2 and the reflective component 4 are integrally stamped by a stamping die.

[0024] In this embodiment, scratches are provided on both the upper and lower ends of the connection between the connecting part 41 and the side wall of the opening in the middle of the light-shielding adhesive 2. The scratches do not penetrate the connection between the side wall of the opening in the middle of the light-shielding adhesive 2 and the connecting part. The scratches facilitate the folding between the connecting part 41 and the light-shielding adhesive 2.

[0025] like Figure 1 , 3 As shown, the connection between the connecting part 41 and the side wall of the opening in the middle of the light-shielding adhesive 2 is used as the fold line. The connecting part 41 and the arc-shaped part 42 are folded onto the side wall outside the opening in the middle of the light-shielding adhesive 2. The arc-shaped part 42 rotates with the connection point between it and the connecting part 41 as the center and opens the cut 43. The rotated arc-shaped part 42 is attached to the rounded corner 3 corresponding to the opening in the middle of the light-shielding adhesive 2.

[0026] When using Figure 2 As shown, a hole is punched in the middle of the light-shielding adhesive 2 using a mold, and a reflective component 4 is also punched out from the middle opening. The reflective component 4 is connected to the light-shielding adhesive 2, and then... Figure 1As shown, the connection between the connecting part 41 and the side wall of the opening in the middle of the light-shielding adhesive 2 is used as the fold line. The connecting part 41 and the arc-shaped part 42 are folded onto the side wall outside the opening in the middle of the light-shielding adhesive 2. The arc-shaped part 42 rotates with the connection point between it and the connecting part 41 as the center and opens the cut 43. The rotated arc-shaped part 42 is then attached to the rounded corner 3 corresponding to the opening in the middle of the light-shielding adhesive 2 and glued and fixed.

[0027] The present invention applies the same coating to the surface of the light-shielding adhesive 2 on the punched surface of the arc-shaped portion 42, so that the punched surface and the light-shielding adhesive 2 have both light-shielding and reflective functions. The remaining material in the opening in the middle of the light-shielding adhesive 2 can be recycled to form the reflective component 4. Through the reflection of the arc-shaped portion 42 in the reflective component 4, the backlight module can emit light uniformly and avoid the phenomenon of dark areas.

[0028] The present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A light shielding glue structure in a backlight module, comprising a backlight module body, the backlight module body comprising an optical film and a back-to-back type light shielding glue attached to the optical film, characterized in that: four groups of top corners in the light shielding glue opening are all rounded corners, a reflection assembly corresponding to the rounded corners is arranged on a side wall in the light shielding glue opening, the reflection assembly is located at two rounded corner edge areas close to the backlight source after folding, the reflection assembly comprises a connecting portion connected with the side wall in the light shielding glue opening, an arc-shaped portion located in the light shielding glue opening is arranged on the connecting portion, a cut is obliquely arranged at the connection between the connecting portion and the arc-shaped portion, and the radius of the arc of the arc-shaped portion is slightly larger than the radius of the arc of the rounded corner. The backlight source is an LED lamp.

2. The light blocking glue structure in a backlight module according to claim 1, wherein, The light shielding glue and the reflection assembly are integrally arranged, the opening in the middle of the light shielding glue and the reflection assembly are integrally punched by a punching die.

3. The light blocking structure of claim 1, wherein the light blocking structure is a light blocking glue structure. Scratches are arranged on the upper and lower end faces of the connection between the connecting portion and the side wall of the opening in the middle of the light shielding glue, and the scratches do not penetrate the connection between the side wall of the opening in the middle of the light shielding glue and the connecting portion.

4. The light blocking structure according to claim 1, wherein the light blocking structure is a light blocking glue structure. The connection between the connecting portion and the side wall of the opening in the middle of the light shielding glue is taken as a folding line, the connecting portion and the arc-shaped portion are folded on the side wall outside the opening in the middle of the light shielding glue, the arc-shaped portion rotates around the connection point between the connecting portion and the arc-shaped portion and opens the cut, and the rotated arc-shaped portion is buckled on the corresponding rounded corner of the opening in the middle of the light shielding glue.

5. The light blocking structure according to claim 1, wherein the light blocking structure is a light blocking glue structure. ​

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