LED Backlight Module Determines The Success Or Failure Of The Panel
Nov 27, 2021
LED backlight module determines the success or failure of the panel
The backlight module basically determines the power consumption of the TV set, the cost of the TFT-LCD panel, and the user's experience of the terminal display effect.
The backlight module is one of the key components of the LCD panel, and its importance is mainly reflected in three aspects: First, the backlight module basically determines the power consumption of the TV set. Since the TFT-LCD panel relies on the electric field to change the arrangement direction of the liquid crystal molecules, its own power consumption is extremely low. The power consumption of TFT-LCD is mainly composed of TFT circuit, driving circuit and backlight module. Among them, the power consumption of the backlight module accounts for 80% of the power consumption of the TFT-LCD, and the power consumption of the TFT-LCD panel accounts for 80% of the entire LCD TV. Consumption occupies the highest share.
Second, the backlight module basically determines the cost of the TFT-LCD panel. The backlight module consists of three parts: LED light source, light guide plate, and optical film, accounting for 72% of the cost of the entire backlight module. The light source is the lamp tube, the light guide plate is used to atomize the line light source into a surface light source, and the main function of the optical film is to condense the light and improve the brightness. Among them, optical film is the most expensive, accounting for 44% of the cost of the backlight module, light guide plate accounting for 16%, lamp tube accounting for 12%, and others such as lampshade and outer frame accounting for 28%. More than 70% of the cost of TFT-LCD panel modules are raw materials, and the backlight module accounts for 20% to 30% of the cost of the panel module. Therefore, the backlight module occupies the highest share in the cost structure of TFT-LCD.
Third, the quality of the backlight module basically determines the user's experience of the terminal display effect. The user's demand for display effects has gradually increased. The needs of wide viewing angles, low power consumption, faster response speed, and richer color expression have become key factors that determine the quality of backlight modules.
