Apparatus and method for adjusting white balance of color sequence method display

Abstract

The invention relates to a method for adjusting white balance, which comprises the steps as follows: a first matrix is generated according to the values of the optical characteristics of a plurality of first light-emitting diodes along the axial directions of a color gamut coordinate; a second matrix is generated according to the values of the optical characteristics of a plurality of first light-emitting diodes along the axial directions of the color gamut coordinate when at white balance; a third matrix is generated according to the optical characteristics of a plurality of second light-emitting diodes along the axial directions of a color gamut coordinate; the first matrix, the second matrix and the third matrix are stored; the second matrix is multiplied by the inverse matrix of the first matrix so as to generate a correction matrix; the third matrix is multiplied by the correction matrix so as to generate a fourth matrix; then only needing to be in accordance with the difference between the fourth matrix and the second matrix, the optical characteristics of a plurality of second light-emitting diodes can be adjusted fast and effectively. The method has the advantage of being capable of adjusting a backlight module and a backlight panel to be adjusted to the optimal white balance state.

Description

【Technical field】 [0001] The present invention relates to a device and method for adjusting white balance, in particular to a device and method for adjusting white balance in a color sequential display. 【Background technique】 [0002] The color mixing method of color display in the display can be divided into two types: time and space. Temporal color mixing is to use different time axes to let RGB light sources pass through to mix colors, such as simultaneous additive color mixing and continuous additive color mixing. Both of them use the phenomenon of persistence of vision of the human eye to allow the human visual system to perceive the effect of color mixing. Spatial color mixing, such as juxtaposition and additive color mixing, taking thin-film transistor liquid crystal display (TFT-LCD) as an example, each display pixel is composed of three sub-pixels of red, green, and blue (RGB) distributed on a color filter , these sub-pixels allow the human visual system to perceiv...

AI Technical Summary

Problems solved by technology

The traditional way is to manually adjust the resistance value to control the current flowing through the LED, but this method can only judge the brightness of the LED with human eyes, and it is not easy to fine-tune when manually adjusting, so it is easy to cause color shift in the picture ( For example, the picture is reddish or blue), and the effect of white balance is poor

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