How does TFT Display work?

2025-06-25

Backlight Illumination:
The LED backlight emits white light, which passes through the first polarizing filter.

Voltage Control:
Each TFT acts as a switch for its corresponding pixel. When a voltage is applied, the TFT adjusts the electric field across the liquid crystal layer.

Light Modulation:
The liquid crystals rotate in response to the electric field, altering the polarization of light. This determines how much light passes through the second polarizing filter.

Color Generation:
Subpixels (red, green, blue) combine to create full-color images by varying their intensity.

Conclusion
TFT LCD technology revolutionized the display industry by balancing performance, cost, and versatility. While newer technologies like OLED and MicroLED offer superior contrast and flexibility, TFT LCD remain a cornerstone of electronic displays due to their reliability and scalability.

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