Abstract:
It is possible to provide a display device capable of faithfully reproducing a color indicated by a video signal including a component of a negative level and performing display of a sufficiently wide color reproduction range. The display device performs display by using n (n is a natural number not smaller than 4) primary colors. The display device includes a video signal conversion unit which receives m (m is a natural number smaller than n) primary color signals corresponding to m primary colors and converts the m primary color signals into n primary color signals corresponding to the n primary colors. The n primary colors contain the primary colors in the relationship of complementary colors against one of the m primary colors. When the color component corresponding to one of the m primary colors is at a negative level, the video signal conversion unit generates n primary color signals so that the luminance of the primary color in the relationship of the complementary colors is higher and the luminance of the primary colors other than the primary color in the relationship of the complementary colors is lower than when a color component corresponding to one of the primary colors is zero.
Abstract:
A liquid crystal display for displaying an image with a wide color reproduction range while preventing whitening. Each pixel of the liquid crystal display is composed of a red sub-pixel (R), green sub-pixel (G), a blue sub-pixel (B), a yellow sub-pixel (Ye), a cyan sub-pixel (C) and a magenta sub-pixel (M). The red, green, and blue sub-pixels will be referred to as "sub-pixels of a first group", and yellow, cyan, and magenta sub-pixels will be referred to as "sub-pixels of a second group." When the color displayed by the pixels changes from black to white with no color, the luminance of "the sub-pixels of the first group" first starts to increase. When the luminance of "the sub-pixels of the first group" reaches a predetermined one, then "the sub-pixels of the second group" starts to increase. According to the invention, the whitening phenomenon that the image of the display screen is whity when the viewer views it obliquely is prevented. It is particularly preferable that this invention is applied to a liquid crystal display having a liquid crystal panel of the MVA mode or the ASM mode.
Abstract translation:显示器具有各自由子像素构成的像素。 子像素包括第一,第二,第三和第四子像素。 第二子像素的第二色调最接近L * a * b *色系色度图中的第一子像素的第一色调。 第三子像素的第三色调比第二色调相对于L * a * b *颜色系统色度图中的第一色调的相对色调的第一色调最近。 子像素的亮度被确定为当由像素显示的颜色从黑色通过第一子像素的第一颜色变为白色时,第一子像素的亮度开始增加,并且第二子像素中的至少一个的亮度 并且当第一子像素的亮度达到预定值时,第三子像素开始增加。