Liquid crystal display with sub-pixels
First Claim
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1. A grayscale liquid crystal display comprising a plurality of pixels having a high pixel aperture ratio, comprising a first substrate and a second substrate wherein each pixel further comprises:
- first, second, third, fourth and fifth subpixels;
a first electrode located on said first substrate;
a second electrode located on said first substrate;
a third electrode located on said first substrate;
a fourth electrode located on said first substrate;
a fifth electrode situated between said first, second, third and fourth electrodes, respectively, and located on said first substrate;
a dielectric layer situated on said at least first, second, third, fourth and fifth electrodes, said dielectric layer having a via proximate to said fifth electrode;
a sixth electrode situated on said dielectric layer, proximate to said first electrode and defining said first subpixel;
a seventh electrode situated on said dielectric layer, proximate to said second electrode and defining said second subpixel;
an eighth electrode situated on said dielectric layer, proximate to said third electrode and defining said third subpixel;
a ninth electrode situated on said dielectric layer, proximate to said fourth electrode and defining said fourth subpixel;
a tenth electrode situated on said dielectric layer and connected through the via of said dielectric layer to said fifth electrode, and defining said fifth subpixel;
a liquid crystal layer situated on said sixth, seventh, eighth, ninth and tenth electrodes;
an eleventh electrode situated on said liquid crystal layer; and
said second substrate supporting said eleventh electrode.
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Abstract
A half-tone pixel having subpixels and control capacitor constituting a 100 percent optically active pixel. The subpixel design results in no reductions in the maximum pixel aperture ratio, brightness or contrast, as a pixel with no subpixels would have. Various subpixel layouts including differing numbers of subpixels and subpixel-turn-on sequences may be implemented and still result in the entire pixel being optically active.
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Citations
8 Claims
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1. A grayscale liquid crystal display comprising a plurality of pixels having a high pixel aperture ratio, comprising a first substrate and a second substrate wherein each pixel further comprises:
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first, second, third, fourth and fifth subpixels; a first electrode located on said first substrate; a second electrode located on said first substrate; a third electrode located on said first substrate; a fourth electrode located on said first substrate; a fifth electrode situated between said first, second, third and fourth electrodes, respectively, and located on said first substrate; a dielectric layer situated on said at least first, second, third, fourth and fifth electrodes, said dielectric layer having a via proximate to said fifth electrode; a sixth electrode situated on said dielectric layer, proximate to said first electrode and defining said first subpixel; a seventh electrode situated on said dielectric layer, proximate to said second electrode and defining said second subpixel; an eighth electrode situated on said dielectric layer, proximate to said third electrode and defining said third subpixel; a ninth electrode situated on said dielectric layer, proximate to said fourth electrode and defining said fourth subpixel; a tenth electrode situated on said dielectric layer and connected through the via of said dielectric layer to said fifth electrode, and defining said fifth subpixel; a liquid crystal layer situated on said sixth, seventh, eighth, ninth and tenth electrodes; an eleventh electrode situated on said liquid crystal layer; and said second substrate supporting said eleventh electrode. - View Dependent Claims (2, 3, 4)
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5. A grayscale liquid crystal display, having a high pixel aperture ratio, comprising:
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a matrix substrate having an approximately planar surface; a plurality of pixels wherein each pixel comprises; a plurality of primary subpixels wherein each primary subpixel comprises; a first electrode situated on the planar surface of said matrix substrate; a dielectric layer situated on said first electrode; and a second electrode situated on said dielectric layer such that said dielectric layer is situated between said first and second electrodes, and said second electrode defines and delineates an area of said primary subpixel; and at least one secondary subpixel comprising a first electrode situated on said matrix substrate, said first electrode defining and delineating an area of said secondary subpixel, and said secondary subpixel being situated in an area of said pixel not defined and delineated by said primary subpixels; and wherein; said first electrodes of said primary subpixels of said pixel, are connected to one another; said first electrode of said at least one secondary subpixel of said pixel is connected to at least one of said first electrodes of said primary subpixels of said pixel; and each of said first electrodes of said primary subpixels of said pixel has a surface area size different from surface area sizes of the other of said first electrodes of said primary subpixels of said pixel. a common electrode substrate with a common electrode having an approximately planar surface proximate to said second electrodes of said primary and secondary subpixels of each of said plurality of pixels, and parallel to the planar surface of said matrix substrate; and a liquid crystal layer situated between said common electrode and said second electrodes of said primary and secondary subpixels of each of said plurality of pixels. - View Dependent Claims (6, 7, 8)
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Specification