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US 8,300,183 B2Granted
Single layer high brightness full color reflective cholesteric displays
AssigneeMacroDisplay Inc.
InventorYao-Dong Ma
Life of this patent
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Abstract
The present invention relates to a liquid crystal display, more specifically, to a single layer reflective full color cholesteric display employing full spectrum circularly polarization. The display has not only zero-field long time memory but also paper-like super high brightness and contrast.
Claims20
A full color reflective display comprising:
- a. a reflective circular polarizer with a predetermined polarity,
- b. a cholesteric liquid crystal with a predetermined polarity and at least two reflective colors,
- c. an absorptive color filter film with at least three colors,
- d. a plurality of transparent conductive patterned substrates juxtaposed to form a cell structure,
- e. a plurality of polymer rib structure within patterned substrates to form a enclosed cholesteric micro-cell structure,
- wherein the cell structure, including the cholesteric liquid crystal, is positioned at the viewing side, while the color filter film is positioned at the inside of the conductive patterned substrate opposite to the viewing side corresponding to the conductive pattern of the substrate and to the micro-cell structure of the cholesteric material,
- wherein the reflective circular polarizer is laminated at the backside of the cell structure,
- whereby a full color reflection with two polarities will be displayed in the cholesteric planar texture area and a dark state will be displayed in the cholesteric focal conic texture area.
5 more elements
A full color reflective display comprising:
- a. an absorptive circular polarizer with a predetermined polarity,
- b. a reflective circular polarizer with a predetermined polarity,
- c. a cholesteric liquid crystal with a predetermined polarity and at least two reflective colors,
- d. an absorptive color filter film with at least three colors,
- e. a plurality of transparent conductive patterned substrates juxtaposed to form a cell structure,
- f. a plurality of polymer rib structure within patterned substrates to form a enclosed cholesteric micro-cell structure,
- wherein the cell structure, including the cholesteric liquid crystal, is positioned at the viewing side, while the color filter film is positioned at the inside of the conductive patterned substrate opposite to the viewing side corresponding to the conductive pattern of the substrate and to the micro-cell structure of the cholesteric material,
- wherein the absorptive circular polarizer is laminated at the front side of the cell structure and the reflective circular polarizer is laminated at the backside of the cell structure,
- whereby a full color reflection with full bandwidth will be displayed in the cholesteric planar texture area and a dark state will be displayed in the cholesteric focal conic texture area.
6 more elements
Dependencies are inferred from the claim text.