This article defines what a TFT display is.

A TFT (Thin-Film Transistor) display, also known as an active matrix display, is a type of LCD (Liquid Crystal Display) technology commonly used in computer monitors, televisions, smartphones, tablets, and other electronic devices. It is characterized by its use of thin-film transistors as individual pixel switches, enabling precise control of each pixel's state and improving image quality and response time.

Here are some key features and components of TFT displays:

1. Thin-Film Transistors (TFTs): TFT displays consist of an array of tiny transistors located behind each pixel. These transistors act as switches that control the voltage applied to the liquid crystal cells, allowing precise control of the amount of light passing through each pixel.

2. Active Matrix Design: TFT displays utilize an active matrix design, where each pixel is individually controlled by its corresponding thin-film transistor. This allows for faster response times, improved contrast, and better color reproduction compared to passive matrix displays.

3. Liquid Crystal Layer: TFT displays use a liquid crystal layer sandwiched between two transparent electrodes. The liquid crystals act as light valves that selectively allow or block the passage of light depending on the electric field applied to them.

4. Color Filters: TFT displays typically use color filters, such as red, green, and blue, to create a full-color image. The color filters are arranged in a pixel grid, and each pixel contains sub-pixels of different colors.

5. Backlighting: Most TFT displays employ a backlighting system located behind the display panel to illuminate the pixels. The backlight provides the necessary light for the liquid crystals to modulate and create the desired images.

6. High Resolution and Image Quality: TFT displays can achieve high resolutions and sharp image quality due to the precise control of individual pixels. They are capable of displaying vibrant colors, wide viewing angles, and high contrast ratios.

7. Fast Refresh Rates: TFT displays can refresh the screen quickly, resulting in smooth motion and reduced motion blur. This makes them well-suited for applications that involve fast-paced visuals, such as gaming or video playback.

TFT displays have become widely adopted due to their advantages in terms of image quality, response time, and versatility. They are found in various devices, ranging from small handheld devices to large-screen displays.