Display device and color filter substrate

Abstract

A display device includes a pixel defined by a plurality of subpixels. The plurality of subpixels include: first and second red subpixels for displaying red; a green subpixel for displaying green; a blue subpixel for displaying blue; and a yellow subpixel for displaying yellow.

1 . A display device comprising a pixel defined by a plurality of subpixels, wherein the plurality of subpixels include: at least one red subpixel arranged to display red; a green subpixel arranged to display green; and a blue subpixel arranged to display blue, the at least one red subpixel being larger than each of the green subpixel and the blue subpixel. 
     
     
         2 . The display device of  claim 1 , wherein the at least one red subpixel includes a first red subpixel and a second red subpixel. 
     
     
         3 . The display device of  claim 1 , further comprising a yellow subpixel arranged to display yellow. 
     
     
         4 . The display device of  claim 3 , wherein the yellow subpixel is larger than the blue subpixel. 
     
     
         5 . The display device of  claim 3 , wherein the at least one red subpixel is larger than the yellow subpixel. 
     
     
         6 . The display device of  claim 3 , wherein the at least one red subpixel includes a first red subpixel and a second red subpixel, wherein the yellow subpixel is larger than each of the first and second red subpixels. 
     
     
         7 . The display device of  claim 2 , wherein the green subpixel is larger than each of the first and second red subpixels. 
     
     
         8 . The display device of  claim 1 , wherein the green subpixel is larger than the blue subpixel. 
     
     
         9 . The display device of  claim 1 , further comprising a cyan subpixel arranged to display cyan. 
     
     
         10 . The display device of  claim 9 , wherein the at least one red subpixel is larger than the cyan subpixel. 
     
     
         11 . The display device of  claim 1 , further comprising a yellow subpixel arranged to display yellow and a cyan subpixel arranged to display cyan, wherein the at least one red subpixel is larger than each of the yellow subpixel and the cyan subpixel. 
     
     
         12 . The display device of  claim 1 , further comprising a yellow subpixel arranged to display yellow and a cyan subpixel arranged to display cyan, wherein the at least one red subpixel includes a first red subpixel and a second red subpixel, and the first red subpixel, the second red subpixel, the blue subpixel, the green subpixel, the yellow subpixel and the cyan subpixel are substantially the same size. 
     
     
         13 . The display device of  claim 2 , wherein each of the first red subpixel, the second red subpixel, the blue subpixel and the green subpixel are substantially the same size. 
     
     
         14 . The display device of  claim 2 , wherein the red displayed by the first red subpixel is different from the red displayed by the second red subpixel. 
     
     
         15 . The display device of  claim 2 , wherein the red displayed by the first red subpixel is the same as the red displayed by the second red subpixel. 
     
     
         16 . The display device of  claim 1 , wherein, the at least one red subpixel has a Y value of no less than 5% and no more than 11%; the green subpixel has a Y value of no less than 20% and no more than 35%; and the blue subpixel has a Y value of no less than 5% and no more than 10%, where a Y value in the XYZ color system of the pixel when displaying white is defined as 100%. 
     
     
         17 . The display device of  claim 1 , wherein, the at least one red subpixel has a dominant wavelength of no less than 605 nm and no more than 635 nm; the green subpixel has a dominant wavelength of no less than 520 nm and no more than 550 nm; and the blue subpixel has a dominant wavelength of no more than 470 nm. 
     
     
         18 . The display device of  claim 1 , wherein, the at least one red subpixel has a color purity of no less than 90%; the green subpixel has a color purity of no less than 65% and no more than 80%; and the blue subpixel has a color purity of no less than 90% and no more than 95%. 
     
     
         19 . The display device of  claim 2 , wherein the first and second red subpixels are driven independently of each other. 
     
     
         20 . The display device of  claim 2 , wherein the first and second red subpixels are driven by a same switching element. 
     
     
         21 . The display device of  claim 2 , wherein, within the pixel, the first red subpixel and the second red subpixel are disposed contiguous to each other. 
     
     
         22 . The display device of  claim 3 , wherein, within the pixel, the green subpixel and the yellow subpixel are disposed contiguous to each other and interposed between other subpixels. 
     
     
         23 . The display device of  claim 3 , wherein, the at least one red subpixel includes a first red subpixel and a second red subpixel, and within the pixel, the first red subpixel, the second red subpixel, the green subpixel, and the yellow subpixel are disposed contiguous to one another. 
     
     
         24 . The display device of  claim 1 , wherein the display device is one of a liquid crystal display device comprising a liquid crystal layer, an organic EL display device, a cathode-ray tube display device, a plasma display panel, and a surface-conduction electron-emitter display device. 
     
     
         25 . The display device of  claim 1 , wherein, within the pixel, the green subpixel is interposed between others of the subpixels. 
     
     
         26 . The display device of  claim 9 , wherein, within the pixel, the cyan subpixel is interposed between others of the subpixels. 
     
     
         27 . The display device of  claim 9 , wherein, within the pixel, the green subpixel and the cyan subpixel are disposed contiguous to each other and interposed between others of the subpixels. 
     
     
         28 . The display device of  claim 1 , wherein, within the pixel, the blue subpixel is interposed between others of the subpixels. 
     
     
         29 . The display device of  claim 3 , wherein, within the pixel, the blue subpixel and the yellow subpixel interpose at least one of the other subpixels between them.