Color gamut conversion method, color gamut converter and displaying device

Abstract

The embodiment of the invention provides a color gamut conversion method, a color gamut converter and a displaying device, relates to the technical field of displaying and is used for solving the problem that color saturation of a whole displaying image is reduced resulting from increasing white subpixels. The color gamut conversion method comprises the steps of obtaining an RGB signal; computingpreset gray values of white subpixels of each pixel in an RGBW domain when a gray value of each monochromatic subpixel in each pixel of an RGB domain is converted to the RGBW domain; dividing at leastone detection area in the original image, and judging whether the detection area is a high saturation color block or not according to luminance and saturation of the pixels in the detection area; setting that first gray maximum values of the white subpixels of each pixel in the RGBW domain is smaller than 255, in the high saturation color block, if the detection area is the high saturation colorblock; and at least taking the first gray maximum values and the minimum values in the preset gray values as target gray values of the white subpixels.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color gamut conversion method, a color gamut converter, and a display device. Background technique [0002] With the continuous development of display technology, display devices have been widely used in electronic products, such as mobile phones, televisions, computers and other products. At present, with the continuous improvement of the resolution of the three-primary-color (RGB) display device, the aperture ratio of the pixel becomes smaller and smaller, and the display brightness decreases. In order to solve the above problems, in the prior art, a white (W) sub-pixel is added to a pixel, thereby improving the display quality of a three-primary-color (RGB) display device. [0003] However, in a four-primary color (RGBW) display device, due to the addition of white (W) sub-pixels, the saturation of the output colors of the R, G, and B sub-pixels will all decrease, thereby ...

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a color gamut conversion method, a color gamut converter, and a display device, which are used to solve the problem that the color saturation of the entire displayed image decreases after adding white sub-pixels

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