A kind of liquid crystal television white balance processing method

Abstract

The invention discloses a liquid crystal television white balance processing method comprising the steps of A, setting a target color coordinate value M0 of the whole liquid crystal television; B, determining an aging signal N and an aging time T, opening an aging mode of a liquid crystal television, and measuring an actually measured color coordinate value M1 after the aging time T; C, measuringand recording the actually measured color coordinate value Mi of the liquid crystal television once every aging time, and after the actually measured color coordinate value Mi is stable, getting the stabilized actually measured color coordinate value Mj; D, correcting the stabilized actually measured color coordinate value Mi to acquire a corrected value [delta]M; and E, correcting a preset whitebalance value of the whole liquid crystal television. According to the method provided by the invention, the different white balance correction values are set aiming at the aging and temperature characteristic of the whole machine in different states, after the working state of the whole liquid crystal television is stable, the white balance correction of the whole liquid crystal television reaches the same color temperature, and the consistency of the liquid crystal television is enhanced.

Description

technical field [0001] The invention relates to the technical field of televisions, in particular to a white balance processing method for liquid crystal televisions. Background technique [0002] The LCD O / C glass, backlight strip, and optical film used in the LCD screen are different, resulting in differences in the color effects of different LCD TV sets. At present, many manufacturers use the white balance debugging system to adjust the color after the entire set is assembled in the production line. LCD TV performs white balance correction. During white balance debugging, a luminance meter is used to collect the original color coordinates of the whole machine, and then the relevant white balance parameters are adjusted through software, so that different whole machines can reach the same color coordinate error range, and the color temperature of different whole machines is consistent. sex. However, the color coordinates of the LCD screen will change with the change of te...

AI Technical Summary

Problems solved by technology

However, the color coordinates of the LCD screen will change with the change of temperature, and the color coordinates will become lower when the temperature rises, and the curves of the screens of different manufacturers are different with the temperature change; at the same time, the LCD screen needs a certain period of aging before it can reach a stable state. The color coordinate data will tend to be stable, and the aging stabilization time of LCD screens with different configurations is different

The color coordinate data collected during the white balance debugging of the whole machine is affected by the aging time and temperature of the LCD screen. If the stable state is not reached during the debugging, the white balance correction result will be affected.

At present, the standards set for the white balance debugging of LCD TVs in different states are the same, but the white balance debugging is affected by factors such as the aging time of the whole machine, temperature rise, etc., and the color coordinate data and target data of some batches of the whole machine after the white balance debugging actually exist. Deviation, usually the measured value is lower than the preset target value