Gray scale display compensation method, gray scale display compensation system and display device

Abstract

The invention provides a gray scale display compensation method, a gray scale display compensation system and a display device. The method comprises steps that an offset value of an actual driving voltage of each gray scale and a corresponding expected driving voltage of the gray scale searched from a white balance look-up table is calculated, and an offset value table is established; an expected driving voltage in the white balance look-up table corresponding to a to-be-displayed gray scale is taken as an actual driving voltage of a target gray scale, an offset value corresponding to the actual driving voltage of the target gray scale is searched from the offset value table; the actual driving voltage is corrected according to the offset value of the actual driving voltage of the target gray scale, and a gray scale corresponding to the actual driving voltage after correction is searched from the white balance look-up table and is taken as a target gray scale to replace the to-be-displayed gray scale for display. The method is advantaged in that LCD optical effects can be still guaranteed under the condition of a low precision driving chip, and precision requirements of the driving chip can be reduced.

Description

technical field [0001] The invention belongs to the technical field of display control, and in particular relates to a gray scale display compensation method and system, and a display device. Background technique [0002] Due to the increasingly high quality requirements for liquid crystal displays (LCDs), the parameters and specifications for LCD internal components are also becoming more and more stringent. Such as figure 1 Shown is a schematic diagram of connection between a bonding point voltage supply circuit PCBA and a source driver chip SOURCEDRIVER in the prior art. Such as figure 1 As shown, PCBA is used to provide 14 binding point voltages; SOURCEDRIVER uses its built-in voltage divider resistor string to generate each gray-scale voltage, and then converts the corresponding gray-scale voltage into a digital signal through the analog-to-digital converter DAC, and finally through the output buffer Unit OUTPUTBUFFER output. [0003] The precision of the voltage di...

AI Technical Summary

Problems solved by technology

When the accuracy of the source driver chip is not enough, it will cause the gamma voltage (Gamma) to deviate, which will affect the display effect of the LCD

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