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Liquid optically clear adhesive for full lamination

An optical adhesive, liquid technology, applied in the direction of adhesive, adhesive type, adhesive additive, etc., can solve the problem of optical properties such as refractive index not meeting the requirements, and achieve excellent yellowing resistance, low curing shrinkage, The effect of reducing the loss of transmitted light

Active Publication Date: 2016-04-20
深圳市库泰克电子材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the optical properties such as the refractive index of the existing liquid optical adhesive dual curing cannot meet the requirements, the present invention proposes a liquid optical adhesive for full lamination, which can not only perform ultraviolet-heat dual curing, but also has a curing shrinkage rate of Less than 1%, the refractive index is 1.53-1.56, and the light transmittance is over 98%, meeting the requirements of optical performance

Method used

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  • Liquid optically clear adhesive for full lamination
  • Liquid optically clear adhesive for full lamination
  • Liquid optically clear adhesive for full lamination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Liquid optical glue for full lamination, calculated by weight percentage, its components are:

[0040]

[0041] Among them, the hybrid photoinitiator is free radical photoinitiator 1173 and cationic initiator alkyliodonium salt, and the mass ratio is 20:1.

[0042] The preparation method of liquid optical adhesive for full lamination comprises the following steps:

[0043] (1) Material dissolution: Weigh the modified liquid isoprene rubber prepolymer, acrylate modified epoxy resin, sol polymer, and EOEOEA monomers according to the above ratio and add them to the reaction kettle. Stir for 1 hour;

[0044] (2) Add hybrid photoinitiator, methyltrimethoxysilane, IRGANOX1135 and leveling agent 1073 to the mixture obtained in step (1) according to the percentage and stir for 2 hours until the mixture is uniform.

[0045] (3) Vacuum defoaming, filtering and discharging the mixture obtained in step (2) to obtain a liquid optical adhesive product for full lamination with a ...

Embodiment 2

[0048] Liquid optical glue for full lamination, calculated by weight percentage, its components are:

[0049]

[0050] Among them, the hybrid photoinitiator is the free radical photoinitiator 184 and the cationic initiator cumene ferrocene hexafluorophosphate, the mass ratio of which is 5:1.

[0051] The preparation method of liquid optical adhesive for full lamination comprises the following steps:

[0052] (1) Material dissolution: Weigh the monomers of modified liquid isoprene rubber prepolymer, acrylate modified epoxy resin, sol polymer, and IBOA according to the above ratio and add them to the reaction kettle. Stir for 2 hours.

[0053] (2) Add the hybrid photoinitiator, vinyltriethoxysilane, IRGANOX245 and leveling agent 1074 to the mixture obtained in step (1) according to the percentage and stir for 3 hours until the mixture is uniform.

[0054] (3) Vacuum defoaming, filtering and discharging the mixture obtained in step (2) to obtain a liquid optical adhesive pro...

Embodiment 3

[0057] Liquid optical glue for full lamination, calculated by weight percentage, its components are:

[0058]

[0059]

[0060] Wherein, the hybrid photoinitiator is free radical photoinitiator 184: cationic initiator alkyliodonium salt, the mass ratio of which is 10:1.

[0061] The preparation method of liquid optical adhesive for full lamination comprises the following steps:

[0062] (1) Material dissolution: Weigh the modified liquid isoprene rubber prepolymer, acrylate modified epoxy resin, sol polymer, and EOEOEA monomers according to the above ratio and add them to the reaction kettle. Stir for 2 hours.

[0063] (2) According to the percentage, add hybrid photoinitiator, r-mercaptopropyltrimethoxysilane, IRGANOX565 and leveling agent 1073 to the mixture obtained in step (1) and stir for 2 hours until the mixture is uniform.

[0064] (3) Vacuum defoaming, filtering and discharging the mixture obtained in step (2) to obtain a liquid optical adhesive product for fu...

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Abstract

The invention provides a liquid optically clear adhesive for full lamination. The liquid optically clear adhesive comprises the following components in percentage by weight: 10-60% of modified liquid isoprene rubber prepolymer, 10-60% of modified epoxy resin, 2.5-15% of a reactive diluent, 15-50% of a mixed photoinitiator and 1-20% of an additive. Through adoption of the liquid optically clear adhesive, not only is double ultraviolet and heat curing realized, but also the curing shrinkage percentage is smaller than 1%, the refractive index is 1.53-1.56, and the light transmittance reaches 98% or above, so that optical property requirements can be met.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a liquid optical adhesive for ultraviolet-heat dual curing full lamination. Background technique [0002] Full lamination means that the panel and the touch screen are completely pasted together in a seamless manner with liquid optical glue or optical tape. Full lamination technology is divided into OCA solid optical glue (Optically Clear Adhesive) full lamination and LOCA liquid optical glue (Liquid Optically Clear Adhesive) full lamination. OCA optical adhesive is used to bond the upper and lower surfaces together in the form of double-sided tape, which is prone to bubbles and wrinkles, and the yield rate is not high. It is being gradually replaced by LOCA liquid adhesive. At present, the common full-fit screens on the market are mainly the OGS (One Glass Solution single-chip touch panel) solution dominated by the original touch screen manufacturers. OGS is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/10C09J151/04C09J4/02C09J4/06C09J11/06C09J11/08
CPCC08L2205/035C09J4/06C09J11/06C09J11/08C09J151/04C09J163/10C08L51/04C08L83/04C08K5/5419C08L63/10C08K5/5425C08K5/548
Inventor 何素敏黄伟进
Owner 深圳市库泰克电子材料技术有限公司
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