Structure of TFT LCD

The TFT LCD can be described as a sandwich-like structure that comes with two glass substrates and liquid crystal in between.

One substrate is the TFT glass, which consists of many microscopic TFTs. Each TFT activates an individual sub-pixel. The liquid crystal material present here reacts to the differences in voltage between the two glass substrates. This in turn determines the amount of light that will pass through from the back light.

In most TFT LCD structures, the other substrate is a color filter glass that will display the individual pixels in red, green or blue, with the back light that passes through it. The composition of the three primary color pixels will in turn generate a rich variety of colors.

AFPD’s LTPS TFT LCD utilizes the proprietary technology from Toshiba - Color Filter on Array (COA), which enables the color filter to be integrated onto the TFT glass. This unique feature increases the aperture ratio and in turn enhances the resolutions of the display significantly.