Optical - how to clean the glass substrate of the liquid crystal display


How to clean the glass substrate of the liquid crystal display?

The glass of the liquid crystal display is basically coated, and the sputtering film is generally used, so the pre-treatment cleaning must be thorough, otherwise the display quality of the liquid crystal display will be seriously affected.
Dirty particles on the glass substrate are more difficult to clean. The smaller the particle diameter of the particles, the larger the surface energy, and the electrostatic force is often applied, and the adhesion to the surface of the glass substrate is stronger. Therefore, cleaning by ultrasonic vibration alone is not enough, but also depends on the chemical, solvency and antistatic ability of the optical glass cleaner, and sometimes even mechanical brushing.
Basic cleaning process one:
Optical glass cleaning agent ultrasonic cleaning - optical glass cleaning agent ultrasonic cleaning - RO pure water ultrasonic rinsing - RO pure water ultrasonic rinsing - RO pure water ultrasonic rinsing - RO pure water ultrasonic rinsing - pure water slow pulling - Air drying basic cleaning process two:
Optical glass cleaning agent roller cleaning - optical glass cleaning agent ultrasonic cleaning - optical glass cleaning agent roller cleaning - RO pure water ultrasonic rinsing - RO pure water ultrasonic rinsing - RO pure water ultrasonic rinsing - RO Pure water ultrasonic rinsing - pure water slow pulling - wind cutting - drying the above basic process is the ordinary cleaning process, the actual should be used according to the actual situation to improve the design.
Process conditions for glass substrate cleaning:
A. Optical glass cleaning agent: Water-based surfactant is generally used as the main raw material, and there are two types of alkaline and neutral types, which are targeted to clean oil, dust, particles and the like on the surface of the glass. The brand is: Evergreen Peak, 25 kg / barrel packaging.
B. The cleaning temperature is 40-55 degrees, and the RO water temperature is 40-55 degrees.
C. The wind cut air pressure is generally 0.4-0.6 MPa.
D. The particles on the surface of the glass are very strong. The frequency of the ultrasonic wave is usually 40KHz, and the higher the requirement is megahertz.
E. Select the level of pure water according to the cleanliness requirements of the product.

This article is based on the general cleaning requirements, if you need technical assistance, please call Changlu Peak Technology Department 0755-2954792
'Optical--How to clean the glass substrate of the liquid crystal display

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