Thin-Film Technology and Applications of TFT LCD Screens

In the field of modern display technology, TFT LCD screens (Thin Film Transistor Liquid Crystal Displays) occupy an important position due to their excellent display performance, mature manufacturing process, and wide range of applications. This article will delve into the thin-film technology of TFT LCD screens and its applications in various fields, and will specifically introduce the contributions of Hangzhou LEEHON Technology Co., Ltd. in this field.

Principles of Thin-Film Technology in TFT LCD Screens

The core of TFT LCD screens lies in their thin-film transistor technology. This technology allows each pixel to be independently controlled, thereby achieving high-quality image display. The basic structure of a TFT LCD screen includes the following key components:

Liquid Crystal Panel

Composed of millions of small pixels, each pixel consists of three sub-pixels: red, green, and blue. The brightness and color of each sub-pixel are controlled by the orientation of the liquid crystal molecules.

Thin-Film Transistor (TFT)

Located below the liquid crystal panel, each pixel is equipped with a TFT, which is used to control the voltage of the liquid crystal molecules, thereby regulating the amount of light passing through.

Backlight

Since liquid crystals themselves do not emit light, a backlight is required to provide illumination. Modern TFT-LCDs almost universally employ LED backlighting, offering superior brightness and color performance.

Color Filter

Decomposes white light into red, green, and blue colors, enabling each pixel to display a full-color image.

Polarizer

Located on either side of the liquid crystal layer, it restricts the direction of light, adjusting the passage of light based on the orientation of the liquid crystal molecules.

The working principle of a TFT LCD screen is based on the arrangement of liquid crystal molecules in an electric field. When an external circuit applies a voltage to a specific TFT, the liquid crystal molecules rotate, altering the light propagation path and thus modulating the light. This TFT-driven liquid crystal working principle achieves efficient pixel control and high-quality display effects.

Evolution of Thin Film Transistor Technology

TFT technology has undergone several stages of development, from the initial amorphous silicon (a-Si) to indium gallium zinc oxide (IGZO), and then to low-temperature polycrystalline silicon (LTPS). Each technology has its unique characteristics and application scenarios:

a-Si (Amorphous Silicon): This is the most mature and lowest-cost TFT technology, but its low electron mobility is unfavorable for achieving high resolution and narrow bezels.

IGZO (Indium Gallium Zinc Oxide): Its electron mobility is more than 10 times higher than a-Si, enabling higher pixel density and resolution, while its extremely low off-state current effectively reduces display power consumption.

LTPS (Low-Temperature Polycrystalline Silicon): Its electron mobility is 10 times that of IGZO and 100 times that of a-Si, allowing direct integration of driving circuitry onto the glass substrate, enabling extremely narrow bezels and thinner designs.

Applications of TFT LCD Screens

TFT LCD screens, with their technological advantages, have been widely used in multiple fields:
Consumer Electronics: TFT technology is widely used in smartphones, tablets, laptops, and desktop monitors, providing clear images and smooth video playback.

Medical Imaging Equipment: In the medical field, TFT screens are used in X-ray, CT scan, and other equipment, providing high-definition images to assist doctors in accurate diagnosis.

Industrial Displays: In automated production lines, TFT displays serve as control panels, displaying equipment status in real time for easy operator monitoring.

Automotive Displays: TFT screens are widely used in automotive instrument clusters and central control systems, providing stable and reliable display effects.

Contributions of Hangzhou LEEHON Technology Co., Ltd.

As a leading enterprise in the display technology field, Hangzhou LEEHON Technology Co., Ltd. has been committed to the research and development and production of TFT LCD screens. The company not only continuously innovates on traditional TFT LCD technology but also actively explores the application and development of new display technologies. Through cooperation with many well-known domestic and international companies, LEEHON Technology has made significant contributions to improving product performance and user experience. It has accumulated rich experience in TFT LCD screen thin-film technology, particularly achieving remarkable results in high resolution, low power consumption, and narrow bezel design.

Conclusion

TFT LCD screen thin-film technology is an important component of modern display technology, achieving high-quality image display through precise control of the arrangement of liquid crystal molecules. From amorphous silicon to indium gallium zinc oxide (IGNOW) and then to low-temperature polycrystalline silicon (LTC), the continuous evolution of TFT technology has driven the continuous progress of display technology. TFT LCD screens are widely used in consumer electronics, medical imaging, industrial displays, and automotive displays.

Hangzhou LEEHON Technology Co., Ltd. has made significant contributions to the research and development and application of TFT LCD screen thin-film technology. Through continuous innovation and cooperation, LEEHON Technology provides the market with high-quality display solutions, driving the development of the entire industry.