Writer: adminRelease Time: 2024-01-05 05:24Browse: 349
TFT (ThinFilmTransistor) LCD, Thin Film Field Effect Transistor LCD, is a type of active matrix liquid crystal display (AM-LCD). Due to its fast response time and better display quality, it is suitable for large-scale animation display and is widely used in notebooks. Products such as computers, desktop computer monitors, LCD TVs, LCD projectors and various large electronic displays.
Each pixel of TFT-LCD is controlled by a TFT integrated on itself, and they are active pixels. Therefore, not only can the response time be greatly accelerated, at least to about 80ms, the contrast and brightness can also be greatly improved, and the resolution has also been unprecedentedly improved. Because it has higher contrast, richer colors, and a faster screen update frequency, we call it “True Color.”
Introduction to the three main processes of TFT-LCD
Front section
The front-end process is similar to the semiconductor process, but the difference is that the thin film transistors are made on glass instead of silicon wafers.
Middle section
The middle section uses the glass from the front section as a substrate, which is combined with the glass substrate of the color filter, and liquid crystal (LC) is poured between the two glass substrates.
Backstage (module assembly)
The back-end module assembly process is a production operation that assembles the glass after the Cell process with various other components such as backlight panels, circuits, frames, etc.
TFT-type liquid crystal displays are relatively complex and are mainly composed of: fluorescent tubes, light guide plates, polarizing plates, filter plates, glass substrates, alignment films, liquid crystal materials, thin mode transistors, etc. First of all, the LCD display must first use a backlight, that is, a fluorescent tube to project light sources. These light sources will first pass through a polarizing plate and then through the liquid crystal. At this time, the arrangement of the liquid crystal molecules will change the angle of the light penetrating the liquid crystal, and then these light must pass through the colored filter film and another polarizing plate in front. Therefore, we only need to change the voltage value that stimulates the liquid crystal to control the intensity and color of the light that finally appears, so that color combinations with different tones can be changed on the LCD panel.
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