TFT LCD display composition

A TFT (Thin-Film Transistor) LCD display typically consists of several key layers, each serving a specific purpose in the display’s operation. Here’s a brief overview of the composition of a TFT LCD display:

Backlight Unit: This is the light source located at the rear of the display. It provides the illumination for the entire display panel, allowing the content to be visible.

Polarizing Layer: There are two polarizing layers in a TFT LCD display, positioned at 90-degree angles to each other. These layers help control the polarization of light as it passes through the display.

Glass Substrate: The glass substrate serves as the foundation of the display. It often has a layer of thin-film transistors (TFTs) deposited on it to control the individual pixels.

Color Filter Glass Substrate: This layer contains the color filters that are used to produce the full range of colors in the display. Each pixel is divided into subpixels of red, green, and blue, and the color filter glass helps control the color output.

Liquid Crystal Layer: The liquid crystal layer is located between the glass substrates. This layer twists and untwists in response to the electric current applied by the TFTs, allowing or blocking the passage of light to create images.

TFT Array: This layer consists of a matrix of thin-film transistors, typically one for each pixel on the display. These transistors act as switches to control the individual pixels and their state.

Common Electrode Layer: This layer distributes the electric current evenly across the liquid crystal layer, ensuring uniform performance of the display.

Alignment Layer: The alignment layer ensures that the liquid crystal molecules are uniformly oriented, allowing for consistent performance of the display.

Cover Glass: The outermost layer of the display, the cover glass provides protection for the underlying layers and contributes to the overall durability of the display.

These layers work together to control the transmission of light and produce the images and colors that are visible on

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