Production Process of FPD Glass Substrates

Compared to the fusion process, which is commonly employed to manufacture glass for electronics, the float process enables multiple sheets of glass for large-screen TFT-LCD to be produced simultaneously. Producing TFT-LCD glass substrates is one of AGC's strengths.

Number of TFT-LCDs taken out from a large-sized glass substrate

Year after year, TFT-LCD glass substrates are becoming larger. In light of this, the ability to produce multiple panels from a single glass substrate is becoming more efficient.

How a PDP works

In PDPs, cells containing gas are formed between a front and a rear substrate. Phosphors coat the cells and when there is an electrical discharge between the positive and negative electrodes on the front and rear glass, the invisible ultraviolet that results stimulates the phosphors in the pixel cells to emit visible light.
Forming a base for the precise arrays of electrodes, built-up pattern of cell ribs, and cell phosphors, the rear panel with transparent glass substrate is an important element in the structure of PDPs.
Optical performance filters on the front panel are used to cut glare, improve brightness, and correct color. Electromagnetic radiation and other characteristics are also controlled in this way.

Various performance characteristics are required of glass substrates for these PDPs.
For example, thermal durability is necessary to withstand the baking that takes place when frit is formed into cells and heating during electrode formation and other processes.
Even before this, to enable these precise processes, the surface has to be completely flat.
PD200, a high-quality PDP glass substrate developed by AGC, meets all of these diverse requirements.