Patent ID: 8269716

Claim:
A liquid crystal display, comprising: a display panel displaying images; a LED (Light-Emitting Diode) backlight module, providing a light source to the display panel, the LED backlight module comprising a LED light set, a light guiding board and an optical film; a luminance control module, controlling the luminance of the LED backlight module; and an overheat protection device, comprising: at least three temperature sensors, measuring temperatures of the LED light set, the light guiding board and the optical film respectively; and an overheat processing module, electrically connecting with the temperature sensors, wherein when the temperature sensors measure that any temperature of the LED light set, the light guiding board and the optical film is higher than a respectively corresponding protection temperature, the overheat processing module drives the luminance control module to descend the luminance of the LED backlight module to protect the liquid crystal display.