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A kind of thin-layer optical glue elastic modulus test method and sample

A technology of elastic modulus and test method, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problem that it cannot be used to measure the elastic modulus of thin-layer optical adhesives, and achieves the promotion of technology research and development and optimization, The effect of great practical application value and simple derivation method

Active Publication Date: 2017-09-29
深圳市高美福商显科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neither of the above two methods can be used to measure the elastic modulus of thin-layer optical adhesives due to the inability to directly contact optical adhesives

Method used

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  • A kind of thin-layer optical glue elastic modulus test method and sample
  • A kind of thin-layer optical glue elastic modulus test method and sample
  • A kind of thin-layer optical glue elastic modulus test method and sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Clean the bottom glass and the upper glass, the thickness of the bottom glass and the upper glass is 0.7mm, and the diagonal length is 20mm×50mm;

[0080] (2) Mix the glue of the A and B components of the optical glue in a ratio of 1:1, fully stir and defoam, to form a usable liquid optical glue;

[0081] (3) Adhesive tapes with a thickness of 200 μm are fixed at the four corners of the bottom glass 1;

[0082] (4) Pour the liquid optical glue on the bottom glass and let it stand until the liquid optical glue flows freely and completely covers the bottom glass;

[0083] (5) Place the upper glass on the bottom glass and the liquid optical glue to form a sample with a three-layer structure;

[0084] (6) Put the sample into the oven for 3 hours, set the oven temperature to 70°C, and the liquid optical glue between the two layers of glass becomes solid optical glue;

[0085] (7) Bond the strain gauge at the center of the cured sample;

[0086] (8) Fix the cured sampl...

Embodiment 2

[0092] In order to solve the difficult problem of testing the modulus of elasticity of optical glue with a fixed thickness of only a few hundred microns, the present invention proposes a method for testing the modulus of elasticity of thin-layer optical glue, which includes the following steps:

[0093] (1) Clean the bottom glass and the upper glass, the thickness of the bottom glass and the upper glass is 1.1mm, and the size is 174mm×315mm;

[0094] (2) Mix the glue of the A and B components of the optical glue according to the ratio of 1:1, fully stir and defoam, and form a usable optical glue;

[0095] (3) Fix tape with a thickness of 250 μm on the four corners of the bottom glass;

[0096] (4) Pour the optical glue on the bottom glass and let it stand until the optical glue flows freely and completely covers the bottom glass;

[0097] (5) Put the sample into the oven for 3 hours, set the oven temperature to 70°C, and the liquid optical glue between the two layers of glass...

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Abstract

In view of the inability of existing methods to accurately reflect the relationship between the elastic modulus, thickness, and curing process of optical adhesives, this patent proposes a method and sample for measuring the elastic modulus of thin-layer optical adhesives. The method includes 3 steps, and the elastic modulus E3 of the optical adhesive is calculated according to the formula. The sample is composed of a bottom glass, an optical adhesive layer and an upper glass from bottom to top. Beneficial technical effects: According to the characteristics of the actual production process, the present invention cures the optical glue between two pieces of glass with a fixed gap to make a glass-thin-layer optical glue-glass sample, which can be as close as possible to the actual parameter status. In addition, the present invention indirectly calculates the elastic modulus of the thin-layer optical adhesive by testing the overall strain of the sample, so as to better solve the display problem caused by the bonding process of the touch screen.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular relates to a method for testing elastic modulus of thin-layer optical glue for bonding and a sample. Background technique [0002] After decades of development, a liquid crystal display (Liquid Crystal Display, LCD) has become a mainstream technology of a flat panel display. With the emergence of smart phones represented by Apple mobile phones, the touch function has become a standard configuration of smart phones or displays. Generally, optical glue is used to bond the touch screen to the LCD screen. The thickness of the optical adhesive is usually 100-300um, and it is in the form of a thin layer. Since the optical glue is located between the touch screen and the liquid crystal screen, the elastic modulus of the optical glue has a great influence on the touch characteristics and display characteristics. [0003] In the actual bonding process, for a certain typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
Inventor 冯奇斌弓欣严乔薛亚萍吕国强
Owner 深圳市高美福商显科技有限公司
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