LCD Panel Display Manufacturing Process

LCD Panel Display (LCD) is a type of Flat Panel Display (FPD) technology that utilizes the unique physical, chemical, and electro-optical properties of liquid crystal materials. It is the most mature and widely used display device in the field of flat panel display technology, primarily applied in areas such as televisions, monitors, laptops, tablets, smartphones, and more.

Currently, the term LCD in the market mainly refers to Thin Film Transistor LCD (TFT-LCD), which is an active matrix type of LCD. It combines two technologies: Thin Film Transistor (TFT) and Liquid Crystal Display (LCD), where the liquid crystal is controlled by thin-film transistors.

 

The construction of a liquid crystal display is similar to a sandwich. The liquid crystal is sandwiched between two glass substrates: the TFT Array glass and the color filter glass. The TFT Array glass contains numerous pixels arranged in a grid, while the color filter is a crucial component for generating colors on the screen. The liquid crystal is sandwiched between the TFT Array and the color filter. When a voltage is applied to the TFT (transistor), the liquid crystal aligns, allowing light to pass through and form a pixel on the panel. The backlight module provides the light source, and the color filter assigns a specific color to each pixel. Combining different color pixels results in the final image on the display.

TFT-LCD production requires a highly controlled, dust-free environment, typically in a cleanroom with a cleanliness level reaching Class 10 (meaning no more than 10 particles per cubic foot of air).

1. Front-End Array

The front-end Array process is similar to semiconductor fabrication, but instead of producing thin-film transistors on silicon wafers, they are created on glass substrates.

2. Mid-Cell

The mid-cell stage utilizes the TFT Array glass produced in the front-end process as a substrate. It is combined with the color filter glass substrate, and after applying liquid crystal between the two glass substrates, they are bonded together. The bonded glass is then cut into panels.

3. Back-End Module Assembly

The back-end module assembly involves the assembly of the glass produced in the mid-cell process with various components such as circuits, frames, backlight modules, and other components to form the final product.

If you have any questions about LCD Panel Display, you can contact us at sales@innoluxlcdpanel.com