+86-575-82399392

CN

MP

Method of replacing polarizer in LCD screen

1. Tool preparation: printer cots, 3M vacuum cloth, alcohol, cotton swabs, small screwdriver, paper cutter, sponge pad. The roller of the printer roller can be used on the waste printer, and the length is selected according to the size of the screen. The function of the roller is to compact the film to fit the LCD screen when rolling the film.

Method of replacing polarizer in LCD screen

2., remove the old membrane: first, the LCD screen should be removed to remove the outer frame and expose the edge of the outer polarizer. Then use the blade to slowly open the polarizer at the corner. Be careful not to scratch the inner glass panel, because the scratch on the glass plate is not repairable. After opening the corner, gently tear out the outer polarizer with your hands. The bigger the screen, the more troublesome it is to remove the polarizer, crushing or scratching the glass with little care. If the back glue of the original polarizer is difficult to uncover, you can drop alcohol at the seam position, making the back glue easy to tear off.

Method of replacing polarizer in LCD screen

3. Choose polarizer, that is, choose film: polarizer angle is generally 45 degrees, 135 degrees, 90 degrees three, from the appearance is not easy to distinguish. Buy a polarizer with a definite angle first. It doesn't matter the size. For example, buy a 135 degree polarizer to stand by. After removing the old film, connect the driving board and backlight to the screen. When the screen is powered on, it should be a white screen. Then put the polarizer with known angle on the screen to observe the image. If the color is normal, the original polarizer angle is 135 degrees. Polaroid. The general angle of polarizer is only 45 degrees, 90 degrees, 135 degrees three, of which 90 degrees are rare.

Method of replacing polarizer in LCD screen

4. patch: put the screen in the dust-free room, without this environment, you can also operate in a clean house. The operation requires two people to cooperate, one of the new film will be unglued some of the sticker, pointing to the screen side, and the screen edge alignment. Another person used the printer cots to roll the polarizer gently until the whole polarizer was pasted onto the glass. If there are tiny bubbles or stripes after the replacement, you can remove the polarizer's external protective film and place it overnight, using the polarizer's permeability to gradually disappear.Method of replacing polarizer in LCD screen

Polarizer is the full name of polarizer, LCD imaging must rely on polarized light, all liquid crystals have two polarized light plates close to the liquid crystal glass, forming a total thickness of about 1 mm of liquid crystal. If any polarizer is missing, the LCD will not be able to display the image.


Method of replacing polarizer in LCD screen


Structure of LCD panel polarizer 


What is polarized light in polarized sunglasses