A method of determining the area size of subpixels in a multi-primary display device for maximizing a white point luminance level is disclosed. The method includes a step of obtaining optical properties of a backlight module and of multi-primary filters for a multi primary display device; a step of obtaining white point chromaticity for a subpixel layout; a step of obtaining a intensity ratio between the color primary and the white point for each primary; a step of representing a luminance level of the multi-primary display device based on obtained data, at the required white point chromaticity, as a set of equations in terms of a relative area size of the subpixels of the multi-primary display device; and a step of solving the set of equations, to yield ratios of area sizes of the subpixels that result in a specified value of luminance at the required white point chromaticity. [Reference numerals] (S110) Step for receiving filter values for each of the multiple primary colors of a multiple primary colors display device;(S120) Step for receiving white point chromaticity required for the multiple primary colors display device;(S130) Step for receiving the intensity ratio between a white point chromaticity coordinate and primary colors, which are required for each primary color;(S140) Step for generating cost function in respect to the brightness of the multiple primary colors display device based on the intensity ratio of each primary color for the received filter values, the required white point chromaticity coordinate, and white point chromaticity;(S150) Step for determining the area ratio of each primary color to the entire area so that the brightness of the multiple primary colors display device can be maximum;(S160) Step for determining the number of sub pixels for each primary color of the multiple primary colors display device

Method of determining area size of subpixels and a display device performing the same

PROBLEM TO BE SOLVED: To improve white balance of a display device.SOLUTION: A display device includes multiple pixels, and at least some of the multiple pixels include red sub-pixels R211 and 215, green sub-pixels G213 and 217, blue sub-pixel B218, and yellow sub-pixels Y212 and 216. The area of the blue sub-pixel B218 is larger than that of the yellow pixel Y212 or 216.

Multi-primary color liquid crystal display device

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Multi-primary color liquid crystal display device