Transparent silica gel for liquid crystal display fitting

A liquid crystal screen and silicone gel technology, which is applied in the field of adhesive materials, can solve the problems of refractive index mismatch, decreased viscosity, and many processes, and achieves damping, shock absorption, peeling and tearing strength, and high peeling and tearing strength. , Overcome the effect of high curing hardness

Active Publication Date: 2019-05-10
铜陵桐力光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The following problems exist in the traditional LCD bonding process: on the one hand, when the light propagates in the display, there is a problem of glare caused by the mismatch of the refractive index of the medium; on the other hand, the three modules of the touch screen need to go through two Fitting, high cost, many processes, resulting in relatively more defects
At the same time, silicone gel has certain advantages such as toughness, high elongation at break, and shock absorption, but it is usually used for liquid crystal screen bonding. , the cross-linking density increases, the hardness of the silicone gel is harder after curing, and there are problems such as a decrease in viscosity after lamination, poor thermal and thermal shock effects, and attenuation of damping effects.

Method used

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  • Transparent silica gel for liquid crystal display fitting
  • Transparent silica gel for liquid crystal display fitting
  • Transparent silica gel for liquid crystal display fitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A transparent silicone gel for lamination of LCD screens

[0031] A transparent silicone gel for lamination of liquid crystal screens. The raw material formula of the transparent silicone gel for lamination of liquid crystal screens includes the following raw materials in parts by weight:

[0032]

[0033] The component A is a vinyl-terminated polysiloxane conforming to the general formula (1):

[0034] (CH 3 ) 2 (CH 2 =CH)SiO 1 / 2 [(CH 3 ) 2 SiO 2 / 2 ] n (1);

[0035] In the general formula (1), n=1200;

[0036] The component B is a terminal allyloxy polyoxypropylene according to the general formula (2):

[0037] CH 2 =CHCH 2 O(C 3 H 6 O) m CH 2 CH=CH 2 (2);

[0038] In the general formula (2), m=120;

[0039] The component C is a vinyl MQ silicone resin, and the M:Q ratio is 1.2;

[0040] The component E is a terminal hydrogen polysiloxane conforming to the general formula (3):

[0041] R(CH 3 ) 2 SiO 1 / 2 [(CH 3 ) 2 SiO 2 / 2 ] x [CH 3 RSiO 2 / 2 ] y (3)

[0042] In the gener...

Embodiment 2

[0052] Example 2: A transparent silicone gel for lamination of LCD screens

[0053] A transparent silicone gel for lamination of liquid crystal screens. The raw material formula of the transparent silicone gel for lamination of liquid crystal screens includes the following raw materials in parts by weight:

[0054]

[0055] The component A is a vinyl-terminated polysiloxane conforming to the general formula (1):

[0056] (CH 3 ) 2 (CH 2 =CH)SiO 1 / 2 [(CH 3 ) 2 SiO 2 / 2 ] n (1);

[0057] In the general formula (1), n=100;

[0058] The component B is a terminal allyloxy polyoxypropylene according to the general formula (2):

[0059] CH 2 =CHCH 2 O(C 3 H 6 O) m CH 2 CH=CH 2 (2);

[0060] In the general formula (2), m=50;

[0061] The component C is a vinyl MQ silicone resin, and the M:Q ratio is 0.8;

[0062] The component E is a terminal hydrogen polysiloxane conforming to the general formula (3):

[0063] R(CH 3 ) 2 SiO 1 / 2 [(CH 3 ) 2 SiO 2 / 2 ] x [CH 3 RSiO 2 / 2 ] y (3)

[0064] In the general...

Embodiment 3

[0074] Example 3: A transparent silicone gel for LCD screen bonding

[0075] A transparent silicone gel for lamination of liquid crystal screens. The raw material formula of the transparent silicone gel for lamination of liquid crystal screens includes the following raw materials in parts by weight:

[0076]

[0077] The component A is a vinyl-terminated polysiloxane conforming to the general formula (1):

[0078] (CH 3 ) 2 (CH 2 =CH)SiO 1 / 2 [(CH 3 ) 2 SiO 2 / 2 ] n (1);

[0079] In the general formula (1), n=300;

[0080] The component B is a terminal allyloxy polyoxypropylene according to the general formula (2):

[0081] CH 2 =CHCH 2 O(C 3 H 6 O) m CH 2 CH=CH 2 (2);

[0082] In the general formula (2), m=200;

[0083] The component C is a vinyl MQ silicone resin, and the M:Q ratio is 1.5;

[0084] The component E is a terminal hydrogen polysiloxane conforming to the general formula (3):

[0085] R(CH 3 ) 2 SiO 1 / 2 [(CH 3 ) 2 SiO 2 / 2 ] x [CH 3 RSiO 2 / 2 ] y (3)

[0086] In the general formu...

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PUM

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Abstract

The invention relates to a transparent silica gel for liquid crystal display fitting. A raw material formula comprises 35-55 parts of component A, 10-25 parts of component B, 2-15 parts of component C, 5 parts of bonding accelerant, 5-25 parts of component E, 0.1-5 parts of catalyst and 0.1-1.0 part of inhibitor; the component A is vinyl-terminated polysiloxane conforming to general formula (1); the component B is allyloxy-terminated polypropylene oxide conforming to general formula (2); the component C is vinyl MQ silicon resin; ratio of M to Q is at 0.8-1.5; the component E is hydrogen-endedpolysiloxane conforming to general formula (3). The transparent silica gel for liquid crystal display fitting prepared according to the invention has the advantages of low viscosity, short defoamingtime, quick curing molding and moderate hardness.

Description

Technical field [0001] The invention relates to a transparent silicone gel for laminating liquid crystal screens, belonging to the technical field of adhesive materials. Background technique [0002] The following problems exist in the traditional LCD screen bonding process: On the one hand, when the light propagates in the display screen, there is a glare problem caused by the mismatch of the refractive index of the medium; on the other hand, the three modules of the touch screen need to go through twice Lamination, high cost, many processes, and relatively many defects. [0003] Under normal circumstances, silicone system silicone gel is used as a liquid optical adhesive for screen bonding. Since the refractive index after curing is almost the same as that of glass, and the thickness after bonding is usually controlled at about 0.1mm to 0.2mm, this technology is adopted. The screen has the advantages of lightness, slimness and good display effect. At the same time, silicone gel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L71/02C08L83/05C08K5/5425C08J3/075
Inventor 华永军唐强
Owner 铜陵桐力光电有限公司
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