Patent ID: 8305338
Filing Date: 2012-11-06
Classification: G02F,G09G

Abstract:
1. A liquid crystal display apparatus comprising: a liquid crystal interposed between a first substrate and a second substrate; a backlight as a white color light source for the liquid crystal; a luminance sensor and a thin film device as pixels being formed on the first substrate in a same process, wherein the luminance sensor detects a luminance of the backlight; a control circuit that generates a drive signal to maintain the luminance of the backlight at an almost constant level with respect to time based on a detection signal detected by the luminance sensor; an input signal generation portion that generates an input signal having a repetitive period that is shorter than a period for which the liquid crystal transmits light without recognition of flickering, the input signal generation portion supplying the input signal to the thin film device; and a sample hold portion that holds a detection signal of the luminance sensor, wherein the control circuit that generates the drive signal to maintain the luminance of the backlight at the almost constant level with respect to time is based on the detection signal held by the sample hold portion, and the second substrate opposite to the first substrate on which the thin film device is formed is disposed on the backlight side when viewed from the liquid crystal.