The part of a TFT LCD that regulates the brightness and colour of each individual pixel is called a TFT array. Thin-film deposition is a technique used to deposit millions of tiny transistors onto the glass substrate, creating the TFT array.
How it Works:
The flow of electricity to a single pixel is managed by a switch that is built into each transistor in the TFT array. Depending on the colour and intensity of the pixel, the transistor opens or closes the switch when an electric charge is applied, allowing light to pass through or blocking it.
A pixel is controlled by each row and column of transistors in the grid-like arrangement of the TFT array. The TFT array controls each pixel’s brightness and colour by applying electric charges to particular rows and columns of transistors, resulting in the images and video that are displayed on the screen.
Types of TFTs:
There are several types of TFTs used in TFT LCD manufacturing, including:
- The most popular type of TFTs used in TFT LCDs is amorphous silicon (a-Si) TFTs. They offer stable, high-quality images and are relatively cheap to produce.
- Polycrystalline silicon (p-Si) TFTs have higher resolution and quicker response times than a-Si TFTs, but they cost more to make.
- Organic TFTs (OTFTs): These TFTs are made from organic materials and can be deposited onto flexible substrates. OTFTs are still in the development stage and are not yet widely used in commercial TFT LCDs.
In conclusion, the TFT array, which controls the brightness and colour of each pixel, is a crucial component of a TFT LCD. The gadget is made up of millions of tiny transistors that act as switches, opening and shutting to control the power flowing to each pixel. Different TFTs are utilised in the creation of TFT LCDs depending on the specific requirements of the application.
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