How TFT Displays Are Manufactured
Thin-Film Transistor (TFT) displays are a cornerstone of modern electronics, used in devices such as smartphones, tablets, monitors, and televisions. The manufacturing process of TFT displays is highly complex and involves multiple precision steps to ensure high performance, durability, and image quality. Below is an overview of the key stages in the production of TFT displays. 1. Substrate Preparation The manufacturing process begins with the preparation of the glass substrate, which serves as the foundation for the TFT array. The glass is cleaned thoroughly to remove any impurities, and a thin layer of silicon or metal oxide (e.g., indium gallium zinc oxide, IGZO) is deposited onto its surface. This layer will form the basis for the thin-film transistors. 2. TFT Array Fabrication The TFT array is created using photolithography, a process similar to semiconductor manufacturing. Here’s how it works: - Photoresist Coating: A light-sensitive material called photoresist is ap...