LCD water-base cleaning liquid

A technology of water-based cleaning liquid and deionized water, which is applied in the field of cleaning liquid, can solve the problems of affecting surface cleanliness, poor wetting performance of slits, and endangering workers' health, so as not to endanger workers' health, improve smoothness, and eliminate residues effect of things

Inactive Publication Date: 2008-02-13
天津晶岭电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based cleaning agent in the existing ultrasonic washing process is composed of inorganic alkali and some hydrocarbons. The inorganic alkali and organic matter are not miscible, so there will be residues after cleaning, which will affect the cleanliness of the surface, and some components endanger workers' health
Water-based cleaning to remove residual LCD liquid crystals is mainly based on the emulsification of surfactants and liquid crystals. The emulsification is more dependent on ultrasound, the surface tension of water is greater than that of solvents, and the wetting performance of the slit is poor.
At present, ODS cleaning agents such as CFC-113 have been eliminated internationally, and some semi-water-based cleaning agents also have many problems such as recycling.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of LCD water-based cleaning liquid, it is improved the ability of dissolving grease by ethanolamine 20, and has increased the stability of liquid g, JFC 5g, tetramethyl ammonium chloride 5g and deionized water 70g to form, The components are mixed and then fully stirred to obtain a liquid crystal display water-based cleaning solution.

[0015] Technical effect: After using the cleaning solution to clean the TN liquid crystal glass sample, use a Leitz optical microscope to observe at 200 times magnification and find that there is no obvious liquid crystal residue on the surface and in the cracks; sampling electrode corrosion experiments, the results show that the cleaning solution did not corrode the electrodes; After drying the cleaning solution, observe the TN liquid crystal glass with a spotlight, and find that there is no obvious impurity on the surface; after cleaning, the first pass rate of the TN liquid crystal glass reaches 82%, which meets th...

Embodiment 2

[0016] Embodiment 2: a kind of LCD water-based cleaning solution, it is to be made up of getting hydroxyethyl ethylenediamine 20g, JFC 10g, sodium lauryl sulfonate 8g and deionized water 58g, fully after each component is mixed Stir to obtain a liquid crystal display water-based cleaning solution.

[0017] Technical effect: After using the cleaning solution to clean the TN liquid crystal glass sample, use a Leitz optical microscope to observe at 200 times magnification and find that there is no obvious liquid crystal residue on the surface and in the cracks; sampling electrode corrosion experiments, the results show that the cleaning solution did not corrode the electrodes; After the cleaning solution was dried, the TN liquid crystal glass was observed with a spotlight, and it was found that a small amount of organic matter remained on the surface of individual TN liquid crystal glass samples; the one-pass rate after cleaning was 78%, which met the industry requirements.

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PUM

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Abstract

The invention relates to a LCD water-base rinse-solution, a condensation substance (JFC) - a mixture of organic base, oxirane and high-grade fatty alcohol, surfactant and deionized water), the weight ratio of the components is: organic base (5 to 20 percent), JFC (1 to 10 percent), surfactant (1 to 10 percent), and the remained is deionized water; wherein, the surfactant takes at least one of teramethyl ammonium chloride, ethyoxylated nonyl amber-acid semi-ester sodium salt, triethanolamine oleate soap, SDBS or amine oxide OA. The invention has the advantages that the organic base has certain decomposing function, the active agent and organic are mutually soluble, and the double effects can better remove the residue on the product surface; the rinse-solution is non-toxic, not harmful to the health of workers, inflaming retarding, explosion-free and safe; the formulate of the rinse-solution is very flexible, capable to meet specific requirements of cleaning, and has sound effect on LCD and organic film cleaning and as well as removal of oil and grease, and so on.

Description

(1) Technical field: [0001] The invention relates to a cleaning liquid, in particular to a liquid crystal display (LCD) water-based cleaning liquid. (two) background technology: [0002] LCD cleaning solution is used to remove liquid crystal residues in the cracks of the LCD screen. There are three types of LCD cleaning agents: water-based cleaning agent, semi-aqueous cleaning agent, and solvent cleaning agent. Water-based and semi-aqueous cleaning agents are suitable for ultrasonic water cleaning process routes, and solvent cleaning agents are suitable for gas-phase ultrasonic cleaning process routes. Semi-aqueous and solvent-based cleaners dissolve liquid crystals. The water-based cleaning agent in the existing ultrasonic washing process is composed of inorganic alkali and some hydrocarbons. The inorganic alkali and organic matter are not miscible, so there will be residues after cleaning, which will affect the cleanliness of the surface, and some components endanger wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D3/20C11D1/65G02F1/13
Inventor 仲跻和李家荣李薇薇周云昌李广福孙文健
Owner 天津晶岭电子材料科技有限公司
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