The manufacturing process of a liquid crystal display (LCD) mainly includes the following four sub-processes:
1. TFT Processing
Function: Forming TFTs and electrode arrays on the lower glass substrate.
Core Process: Typically employs a five-mask process, including deposition, photolithography, etching, cleaning, and inspection. The pattern transfer process uses multiple identical steps with different masks to complete the TFT layered structure.
2. Color Filter Processing
Function: Fabricating color filter components on the substrate.
Core Process: Includes light block fabrication, filter fabrication, protective cleaning, and ITO deposition.
3. Cell Assembly Process
Function: Aligning the TFT substrate and color filter substrate and injecting liquid crystal material.
Note: Although the specific steps are not detailed here, this process is crucial to LCD performance and requires precise control of the cell gap and liquid crystal injection volume.
4. Module Assembly Process
Function: Assembling the assembled LCD panel with components such as the driving circuit and backlight module into a complete LCD module.
Core processes include circuit connection, backlight module assembly, bezel bonding, and functional testing.
These processes together constitute the complete manufacturing process of an LCD screen from raw materials to finished product. Each step requires high-precision equipment and strict quality control to ensure the performance and reliability of the final product.
