Analysis of Core Components of TFT LCD Panel

TFT-LCD panel, also known as thin-film transistor liquid crystal display screen, is mainly composed of three core components: LCD panel, TFT panel, and backlight module.

LCD panel: Composed of two glass substrates sandwiching a liquid crystal layer, the liquid crystal molecules themselves do not emit light and require the assistance of an external light source.

TFT panel: Thin film transistor, used as a switch to control the deflection angle of liquid crystal molecules, achieving image display.

Backlight panel module: including LED backlight source, light guide plate, reflector plate, diffuser plate, dimming plate, etc., providing uniform and high brightness light source for LCD panel.

Detailed analysis of backlight module

Backlight source: LED type is commonly used, emitting white light as the light source for LCD screens.

Light guide plate: evenly distribute the backlight light to the entire LCD panel.

Reflective plate: Ensure that the light is focused towards the liquid crystal molecules.

Diffuser: Adjust the angle of light diffusion, increase the radiation area, and improve uniformity.

Brightening film (prism film): Enhances brightness and focuses light at a positive angle.

Other key components

Polarizing film: allows light to pass through from a single direction, determining the polarization performance, transmittance, etc. of the display screen.

Color filter: Provides red, green, and blue primary colors, combined with liquid crystal molecules to achieve full-color display.