White balance method for four-color monitor

Abstract

The invention provides a white balance method for a four-color display. The method comprises the following steps: after the white balance for the first time, comparing a measured chromaticity at each gray level with a target chromaticity, thereby acquiring a deviation value of the measured chromaticity at each gray level and the target chromaticity; and accordingly correcting the target chromaticity for the white balance for the second time; utilizing the target chromaticity for the white balance for the second time to perform the white balance for the second time, thereby automatically compensating the deviation value of the measured chromaticity of the white balance for the first time and the target chromaticity, promoting the automation level of the white balance of the four-color display, reducing the workload of an engineer in the process of the white balance of the four-color display, increasing the working efficiency, reducing the labor cost and promoting the white balance effect.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a white balance method for a four-color display. Background technique [0002] In the currently widely used three-color pixel system, taking a liquid crystal display as an example, each pixel unit generally consists of three sub-pixel units, namely a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit. A new four-color pixel system adds a sub-pixel unit to the traditional three-color pixel system, which can improve the expressiveness of the system in displaying colors. [0003] With the development of the four-color pixel system, its three-color to four-color conversion technology has basically matured, and the corresponding products have begun to enter the stage of practical application. However, most of the existing four-color pixel products lack effective white The balance adjustment technology leads to poor display effect, thus failing to give full play to ...

AI Technical Summary

Problems solved by technology

[0006] However, according to the above-mentioned white balance method, the actual display effect of the four-color display does not accurately fall within the target value. The reasons may include: when measuring the stimulus value of each color in the original state from 0 to 255 gray levels in the first step, there is Measurement error, when the display provides measurement data in a single color and displays multiple colors at the same time, due to the different loads of the data lines and the interaction between pixels, the three stimuli of 0 to 255 gray scales measured when different single colors are displayed Value addition cannot be accurately equivalent to the actual results of tristimulus values ​​from 0 to 255 gray levels when different colors are lit at the same time. That is to say, after the calculation of the above method is completed, the actual effect will deviate from the target value, that is, theoretically The optimal calculation result may not be suitable for the real display, and engineers need to manually correct and modify it on this basis, which greatly increases the workload and system complexity, and reduces work efficiency

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