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Adhesive composition and optical fingerprint module

A composition and adhesive technology, which is applied in character and pattern recognition, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of complex process, low product yield, large thickness, etc., and achieve simplified process and improved The effect of precision

Inactive Publication Date: 2018-03-06
上海昀通电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is complex, which can easily lead to problems of low product yield and large thickness

Method used

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  • Adhesive composition and optical fingerprint module
  • Adhesive composition and optical fingerprint module
  • Adhesive composition and optical fingerprint module

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The preparation method of the adhesive composition of the present invention comprises: mixing and stirring required amounts of each component. The preparation process is carried out under normal temperature and pressure, and needs to be protected from light.

[0042] The performance of adhesive composition of the present invention is tested by following method:

[0043] Test 1: LED curing. The thickness of the dispensing glue is 0.15mm, and it is cured by an LED ultraviolet lamp, such as IGE's XC210 (wavelength 365nm). Its light intensity is 800mw / cm 2 ~1200mw / cm 2 , the time is 6 seconds to 8 seconds.

[0044] Test 2: Adhesion. It is used to characterize the strength of the adhesive composition to the sheet after it is fully cured. Usually the thickness of the adhesive layer is 50μm and the area is 5x10mm. The sheet material described here is glass. The testing equipment used was a universal tensile machine (Instron 3367, Instron Inc.). During the test, use gl...

Embodiment 1

[0053] In the first step, 55kg of aliphatic urethane acrylate, 18kg of isobornyl acrylate and 18kg of hydroxyethyl acrylate are put into the mixing tank for stirring, and the stirring speed is set at 90-120rpm, and stirred for 10 minutes; in the second step, 3kg of 1- Hydroxycyclohexyl phenyl ketone and 1kg 2,4,6-trimethylbenzoyl-diphenylphosphine oxide are thrown into the stirring tank and stirred, the stirring speed is set at 100-120rpm, and the stirring time is 20 minutes; the third Step, the visible light absorber 0.2kg of UV449, 0.2kg of UV482, 0.2kg of UV497, 0.2kg of UV546, 0.2kg of UV584, 0.2kg of UV638, 0.2kg of UV679, 0.2kg of UV709 and 0.2kg of UV740 Put it into a mixing tank and stir, the stirring speed is set to 15-30rpm, the stirring time is 25 minutes, and finally the mixture is filtered and packaged.

Embodiment 2

[0055] In the first step, put 50kg of aliphatic urethane acrylate, 18kg of isobornyl acrylate, 10kg of ethoxylated trimethylolpropane triacrylate and 10kg of hydroxypropyl acrylate into the mixing tank for stirring, and the stirring speed is set at 60- 120rpm, stirred for 10 minutes; In the second step, 2kg 2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-acetone, 0.5kg isopropyl thioxanthone (2 , 4 isomers mixed), 1kg p-position N, N-dimethylaminobenzoic acid isooctyl ester and 1.5kg o-benzoyl benzoic acid methyl ester are thrown into the mixing tank and stirred, the stirring speed is set to 100-120rpm, and the stirring time is 20 minutes; the third step, the visible light absorber 0.3kg of UV449, 0.3kg of UV482, 0.3kg of UV497, 0.3kg of UV546, 0.3kg of UV584, 0.3kg of UV638, 0.3kg of UV679, 0.3kg of UV709 Put 0.3kg of UV740 into the mixing tank and stir, the stirring speed is set to 15-30rpm, the stirring time is 25 minutes, and finally the mixture can be filtered and packaged...

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Abstract

The invention relates to an adhesive composition and an optical fingerprint module. The adhesive composition is prepared from the following components in parts by weight: 30-60 parts of a polyurethaneacrylate oligomer, 20-70 parts of an acrylate monomer, 3-5 parts of a light initiator and 1-5 parts of a visible light absorbent, wherein the visible light absorbent is selected from at least one group formed by UV449, UV482, UV497, UV546, UV584, UV638, UV679, UV709 and UV740. The adhesive composition can be used for assembling the optical fingerprint module.

Description

technical field [0001] The invention relates to an adhesive composition and an optical fingerprint module. Background technique [0002] Due to the uniqueness of human fingerprints, fingerprint imaging recognition technology has been widely used in public security systems, building access control systems, personal computers and various consumer electronics products. At present, the technical methods of fingerprint imaging mainly include capacitive imaging, optical imaging and ultrasonic imaging. Among them, optical imaging is getting more and more attention from the market because of its good imaging effect and relatively cheap equipment. [0003] An existing optical fingerprint imaging module, such as an optical fingerprint module disclosed in patent document CN106960201A, includes: a cover plate 100 for protecting the optical fingerprint module, an ink layer 200 for determining the color presented by the optical fingerprint film group, and The filter layer 300 for filter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J11/06G06K9/00
Inventor 朱建国张维明裴勇
Owner 上海昀通电子科技有限公司
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