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A method for dismantling oca optical glue in interlayer by laser

A technology of optical glue and laser, applied in laser welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of energy consumption, power consumption, bursting, etc., and achieve the effect of reducing overall cost and production energy consumption

Active Publication Date: 2018-12-07
SHENZHEN JIXIANGYUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: (a) The whole is cooled to an extremely low temperature, and other solid devices are prone to bursting, and the scrap rate is high
(b) Consume a lot of power
A large amount of industrial gas is consumed, and the process of manufacturing industrial gas also consumes a lot of energy, and the emission will cause safety accidents and environmental pollution
(e) High cost of equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] In this embodiment, the method of using laser to disassemble the OCA optical glue in the interlayer is as follows:

[0026] (1) Environmental requirements: indoor temperature 22-30 ℃, humidity 40-90;

[0027] (2) Tools used: a set of positioning fixtures; power less than 100 watts, wavelength 808-1080nm, no requirements on pulse width and frequency, can be fiber lasers, semiconductor lasers, YAG lamp pump lasers; laser heads and optical lenses group; a set of XY motion table with suitable stroke and corresponding adapter plate.

[0028] (3) The specific implementation steps are as follows:

[0029] (3a) Fixed products. Use clamps to lay the OCA screen flat and fix it with the side of the glass cover facing up.

[0030] (3b) Adjust optical parameters: use the laser head composed of collimating mirror, beam expander, focusing mirror and protective lens. After many experiments, it shows that the laser beam can be transformed into a beam with a diameter of 10mm, a focal ...

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PUM

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Abstract

The invention relates to a method for dismantling OCA optical cement in an interlayer by means of lasers. The physical characteristics that OCA optical cement is denaturized and aged and loses viscosity at the temperature higher than 130-150 DEG C is used, and the method includes the following steps that firstly, lasers serve as a heat source for dismantling OCA; secondly, the lasers become light spots with reasonable beam diameter, focus length and focus depth by means of a matched optical system; thirdly, laser parameters are set; fourthly, a laser head is mounted by means of a motion platform or a manipulator, the laser light spots are irradiated to a specific area according to set parameters, such as track, speed and stay time, for selective heating and ageing; fifthly, after laser treatment is finished, the two sides of an adsorption screen of a manual or mechanical suction cup are pulled apart at a certain angle and separated, and the method is implemented. The yield of a recyclable device obtained after OCA dismantling is 100%, production energy consumption of the whole OCA dismantling procedure can be reduced by 5 times or above, and comprehensive cost for OCA dismantling can be reduced.

Description

technical field [0001] The invention relates to a method for dismantling OCA optical glue in an interlayer by using laser, and belongs to the technical field of electronic product recycling. Background technique [0002] There are two main disassembly methods currently used for electronic display screens: [0003] (1) Molybdenum wire dismantling method: use equipment similar to the working principle of wire cutting to cut, use molybdenum wire to perform reciprocating sawing, and disassemble the OCA layer of the screen. During disassembly, the platform fixes the finished product and heats it, and the molybdenum wire Pull left and right and move forward slowly to form a split. The main disadvantages of this method are: (a) High defect rate. This method is mechanical contact destruction dismantling. After dismantling the LCD screen, it is easy to see purple traces between the light sheet and the liquid crystal layer when the black interface is lit, which proves that the glue...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/035B23K26/064B23K26/402
CPCB23K26/035B23K26/064B23K26/402
Inventor 胡柳平黄再福刘晨王技科
Owner SHENZHEN JIXIANGYUN TECH CO LTD