45 results about "Multi-primary color display" patented technology

The object of the present invention is to provide a multi-primary color display method and device, which can achieve miniaturization and perform multi-primary color display with high definition and finer gradation without decreasing the time resolution. When displaying an image by four or more primary colors, a first image is formed by light of two or more primary colors, and the image consisting of four or more primary colors is displayed by spatially modulating the first image with a second image consisting of two or more primary colors having spectroscopic characteristics different from spectroscopic characteristics of the light of primary colors forming the first image.

A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.

A display device which exhibits functional effects in which color separation between sub-pixels constituting a pixel is hardly recognized and white line display is easily recognized as one line, in enlargement of the color reproduction range in image display using multi-primary colors, and thereby improves display quality, and provides a liquid crystal display device including such a display device. The display device displays an image constituted by pixels each including sub-pixels of four or more colors, wherein the pixels constituting the display device mainly include a pixel arranging a sub-pixel of a color having the highest brightness value in a central region of the pixel.

This multi-primary-color display device (100) includes a multi-primary-color display panel (10) and a signal converter (20). The display device assigns a plurality of subpixels that form each pixel to a plurality of virtual pixels and is able to conduct a display operation using each of the plurality of virtual pixels as a minimum color display unit. The signal converter (20) includes: a low-frequency multi-primary-color signal generating section (21) which generates a low-frequency multi-primary-color signal; a high-frequency luminance signal generating section (22) which generates a high-frequency luminance signal; and a rendering processing section (23) which performs rendering processing on the plurality of virtual pixels based on the low-frequency multi-primary-color signal and the high-frequency luminance signal. The signal converter (20) further includes a magnitude of correction calculating section (24) which calculates, based on an input image signal, the magnitude of correction to be made on the high-frequency luminance signal during the rendering processing.

An image device includes a plurality of pixel groups. Each pixel group includes a plurality of dots arranged in a predetermined identical matrix form, and each pixel group has at least one first color dot, at least one second color dot, at least one third color dot and at least one fourth color dot. Any repeated sequence of consecutive color dots in a row direction and in a column direction comprise at least one first color dot, at least one second color dot, at least one third color dot, at least one fourth color dot. The advantage of the invention is to provide all multi-primary colors in a single row or column so that by using subpixel rendering method, black and white lines can be formed in rows or columns, thus reducing the number of columns in a multi-primary colors display.

A multi-primary color display device (100) includes: a multi-primary color display panel (10) including a pixel that is defined by a plurality of sub pixels including a red sub pixel (R), a green sub pixel (G), a blue sub pixel (B), and a yellow sub pixel (Ye); and a signal converting circuit (20) converting a three-primary color image signal corresponding to three primary colors into a multi-primary color image signal corresponding to four or more primary colors. The signal converting circuit (20), in a case where a three-primary color image signal representing at least an achromatic color of a half tone is input, performs a signal conversion such that variations in luminance levels of the plurality of sub pixels are equalized.

A multi-primary color display device according to the present invention includes pixels, each having a plurality of sub-pixels. The plurality of sub-pixels include first, second, third and fourth sub-pixels for displaying first, second, third and fourth colors having first, second, third and fourth hues. The second and third hues are adjacent to the first hue on both sides thereof on an a*b* plane of an L*a*b* colorimetric system. When a color displayed by each pixel changes from black to an optimal color of the first hue, luminance values of the plurality of sub-pixels are set such that the luminance value of the first sub-pixel starts to be increased and also the luminance values of the second and third sub-pixels start to be increased at a rate of increase lower than the rate of increase of the first sub-pixel.

A multi-primary-color display device includes a number of pixels, each of which includes a first subset including red, green and cyan subpixels and a second subset including blue and yellow subpixels. In each pixel, the subpixels included in the first subset are arranged in series in one direction, while the subpixels included in the second subset are arranged in series in the same direction as the subpixels of the first subset.

The invention relates to a color temperature compensating method which comprises the following steps: judging the component strength of three colors in an input three-dimensional color signal; when the three colors have the same component strength, executing a lookup mechanism to find out a first group of multi-primary color signals corresponding to the three colors with the same component strength, and carrying out digital gamma correction on the first group of multi-primary color signals so as to provide a first group of color temperature compensating signals; when the three colors are different in the component strength, executing the lookup mechanism to find out a second group of multi-primary color signals corresponding to the three colors with different components, and carrying out digital gamma correction on the second group of multi-primary color signals so as to provide a second group of color temperature compensating signals; and enabling the three colors with the same component and at least one same color with the same component among the three colors with different components to be different in the brightness displayed on a multi-primary color display.

The invention discloses a primary color optimization method for a multi-primary color display, which comprises the steps of firstly determining the primary color number, white spot color coordinates and white spot brightness of the display; then selecting a uniform color space (UCS) for gamut evaluation and a target gamut, giving the boundary of the target gamut in the uniform color space and thegamut volume, and selecting a value range which can be a continuous or discrete value range and an initial value of a color coordinate of each primary color light source; then calculating the shape ofa display gamut accomplished by the primary color coordinate combination in the selected uniform color space, normalizing the white spot brightness of the display gamut to the white spot of the target gamut, and calculating the volume of an intersection area of the display gamut and the target gamut; and setting a reasonable stopping condition through maximizing the volume of the intersection area or the ratio of the volume of the intersection area and the volume of the target gamut, and obtaining the optimized primary color coordinates and the brightness. The invention further discloses multi-primary color display device.

A color conversion device used on multi-primary color display unit consists of a linear conversion unit for converting input signal into linear space to obtain digital input value R and G as well as B of red sub-pixel and green sub-pixel as well as blue sub-pixel on input signal at linear space, signal conversion unit for obtaining video signal ABC, calculation unit for obtaining grey scale point with the same brightness as video signal according video signal ABC and for judging whether video signal ABC are over range being presented by multi-primary color or not as well as for making grey scale point ratio be zero if it is.

A multi-primary color display has a backlight source and pixels. Each pixel has at least four sub pixels, which display red primary color, green primary color, blue primary color and a fourth primary color, respectively. At the peak position of the fourth primary color located in the wavelength range between 550 nm˜600 nm, the relative luminance ratio of the fourth primary color to the green primary color is greater than or equal to 0.5. When the ratio of the relative luminance meets the requirement and the relative luminance of a newly added primary color is greater than a certain value, the colors beyond the three-primary color gamut, which includes natural colors and other colors outside the natural color gamut, can be reproduced.

The invention provides a multi primary color conversion method. The multi primary color conversion method includes the steps: establishing a space color gamut model of a display module; according to the color coordinates of the target color and the color coordinates of the corresponding color of each vertex of each peripheral surface, determining the target peripheral surface corresponding to thetarget color; according to the gray scale of each primary color of the corresponding color of each vertex of the target peripheral surface; acquiring the reference gray scale of part of primary colorsof the target color; acquiring the reference gray scale of other primary colors of the target color and the reference luminance of the target color; and according to the proportional relation betweenthe reference luminance of the target color and the target luminance, respectively converting the reference gray scale of each primary color of the target color into the target gray scale. Correspondingly, the invention also provides a driving method of the multi primary color display module, a readable storage medium and a display device. The multi primary color conversion method can accuratelyconvert the color information of the target color into the target gray scale of a plurality of primary colors.