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Novel shading rubber belt

A light-shielding tape, a new technology, applied in optics, adhesives, nonlinear optics, etc., can solve problems such as overflowing glue, limited thickness specifications, and affecting the quality of the light-emitting surface of the backlight module, achieving uniform texture and avoiding glue overflowing effects

Inactive Publication Date: 2008-08-20
SUZHOU JINFU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In different situations, there are different requirements for the thickness of the shading tape. In order to adjust the thickness of the shading tape, the method that can be used is to adjust the thickness of the base material and adjust the thickness of the glue layer. Since the thickness of the base material is limited and fixed, In addition, the cost of the base material is also higher than that of the glue. Therefore, the thickness of the shading tape is usually adjusted by adjusting the thickness of the glue layer. , Glue overflow will occur during die-cutting, which will affect the quality of the light-emitting surface of the backlight module

Method used

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  • Novel shading rubber belt
  • Novel shading rubber belt
  • Novel shading rubber belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment one: see attached image 3 Shown, a kind of thickness is the light-shielding double-sided adhesive tape of 0.15mm, comprises light-shielding layer 7 and adhesive layer 6, and described light-shielding layer 7 selects black PET film for use, and its thickness is 0.05mm (Japan Toray X30), adhesive Layer 6 is made of double-sided tape, which is composed of base material layer 8 and adhesive layer 9 on both sides, the thickness of which is 0.05mm (TESA4972), and the two sides of the black PET film are respectively compounded with a layer of double-sided adhesive tape under heating conditions. Tape layers, thereby constituting a light-shielding tape with a thickness of 0.15mm.

Embodiment 2

[0022] Embodiment two: see attached Figure 4 As shown, a single-sided light-shielding tape with a thickness of 0.13mm and a reflective function is used. The black PET film is used for the light-shielding layer, and its thickness is 0.075mm (Toray X30 in Japan). The adhesive layer is double-sided tape, and its thickness is 0.055mm. mm (Sekisui #550P5BW), the tape has a white reflective layer, and a layer of double-sided tape is compounded on one side of the black PET film under heating conditions to form a light-shielding single-sided tape with a thickness of 0.13mm and a reflective function. .

Embodiment 3

[0023] Embodiment three: see attached image 3 As shown, a light-shielding double-sided tape with a thickness of 0.085mm, the light-shielding layer is made of black PET film with a thickness of 0.025mm (Toray X30 in Japan), and the adhesive layer is made of double-sided tape with a thickness of 0.03mm (3M9019 ), compound a layer of double-sided adhesive tape on both sides of the black PET film under heating conditions, thereby forming a light-shielding adhesive tape with a thickness of 0.085mm.

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Abstract

The invention relates to a shading belt which comprises a light shielding layer and an adhesive layer, and is characterized in that: the light shielding layer is black polyethylene terephthalate thin layer; the adhesive layer is two sided tape and is composed of a substrate layer and adhesive agent layers at two sides; the adhesive layer is fixedly connected with the surface of the light shielding layer by an adhesive layer on the same surface; the two sided tape is compounded on one side or two sides of the black PET thin layer, thus forming light shielding single side tape or light shielding two sided tape. The thickness of the light shielding tape can be adjusted by choosing PET films with different thicknesses and the two sided tapes with different thicknesses, which avoids the adjustment of the thickness of the light shielding tape by using a large amount of glue, and avoids the glue-spilling phenomenon in die-cutting.

Description

technical field [0001] The invention relates to a light-shielding tape, in particular to a light-shielding tape suitable for preventing light leakage from back light sources of liquid crystal displays and the like. Background technique [0002] Because the liquid crystal display has the following many advantages: zero radiation, low energy consumption, small heat dissipation; thin and light; accurate image restoration; sharp display characters; Therefore, the display structure of most digital products today adopts liquid crystal display. However, the brightness and contrast of liquid crystal displays have not been very good, because the liquid crystal itself does not emit light, and the light-emitting tube behind the liquid crystal panel needs to provide a light source. If the shielding is not good, light exposure will occur, which will affect the contrast and brightness of the liquid crystal display. In order to prevent light leakage, fix the ends of the liquid crystal pan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02G02F1/1339
Inventor 杨峥马慧军
Owner SUZHOU JINFU TECH
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