Liquid crystal display with patterned retardation films
AssigneeOIS Optical Imaging Systems, Inc.
InventorsAdiel Abileah, Gang Xu, Patrick F. Brinkley
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Abstract
A multi-colored pixel for a twisted nematic liquid crystal display including red, green, and blue subpixels, wherein each subpixel includes a pair of substrates, a pair of polarizers, opposing electrodes, and a color personalized retardation film which compensates for the different wavelength of each color. The personalized retardation films of the different color subpixels results in elimination of the multi-gap approach and substantially eliminates the problem of different color leakages at different viewing angles, including normal. Also, one polymer based element, preferably a polyimide, functions as both a color filter and a retardation film in certain embodiments of this invention.
Claims51
A twisted nematic pixel for use in a liquid crystal display, said pixel comprising:
- a first subpixel having a first color filter and first retardation film;
- a second subpixel having a second color filter and a second retardation film;
- and
- wherein said first and second retardation films have retardation values different from one another and said first and second color filters are different from one another.
A multi-colored pixel for use in a liquid crystal display, comprising:
- a first polarizer on a first substrate;
- a second polarizer on a viewer side of the pixel, and on a second substrate;
- a liquid crystal layer disposed between said first and second polarizers;
- first and second subpixels each having a different color optical filter therein for transmitting a different predetermined color or wavelength of optical radiation;
- and
- wherein said first subpixel includes a first retardation means having a first predetermined retardation value, and said second subpixel includes a second retardation means having a second predetermined retardation value different than said first predetermined retardation value, and wherein said first and second retardation means are disposed between said first and second substrates.
Dependencies are inferred from the claim text.