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

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 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.

A signal conversion circuit (20) of a multiprimary display device (100) includes a low-range multiprimary signal generation section (21), a high-range luminance signal generation section (22), and a rendering process section (23). The low-range multiprimary signal generation section includes a first filter section (21a) which is capable of extracting a low-range component from an input image signal and a multiprimary conversion section (21b), whereas the high-range luminance signal generation section includes a luminance conversion section (22a) and a second filter section (22b) which extracts a high-range component of a luminance signal. The signal conversion circuit further includes a chromaticity conversion section (24) and a luminance / chromaticity change detection section (25). As a frequency characteristics profile of the first filter section, one frequency characteristics profile is selected from among a plurality of predefined frequency characteristics profiles, in accordance with a result of detection by the luminance / chromaticity change detection section.

A multi-primary color display device includes a unit pixel part, a plurality of data lines, a plurality of pads and a plurality of connection lines. The unit pixel part is disposed on a display area and includes at least four subpixels. The data lines extend in a first direction on display area, and are electrically connected to the subpixels. The pads are arranged in a second direction perpendicular to the first direction on a peripheral area surrounding the display area, and are electrically connected to a driving chip. The connection lines connect the data lines to the pads disposed on the peripheral area. Each of the connection lines has a same line resistance.

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 multiple primary color display device includes a plurality of pixels located in a matrix including a plurality of rows and columns. The pixels are each formed of at least four sub pixels for displaying different primary colors, which can be sorted into n number of virtual pixels, and use each of the n number of virtual pixels as a minimum color display unit for providing display. The sub pixels which form each of the virtual pixels include a sub pixel common to another of the virtual pixels. When a line having a width corresponding to the n number of virtual pixels is displayed, two sub pixels which are located at both of two ends, in a width direction, of the line and display a certain identical primary color to each other have a luminance lower than the original luminance that the two sub pixels.

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.