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US 2001/0055083 A1Published application
Reflective liquid crystal display using cholesteric polymers
AssigneeReveo, Inc.
InventorsYingqin Jiang, Aharon Hochbaum
Life of this patent
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Abstract
A reflective liquid crystal display (LCD) including a cholesteric liquid crystal polarizing device and a liquid crystal cell superimposed with one another. In various embodiments, the reflective LCD may be a normally white mode or normally black mode device. In another variation, the liquid crystal cell may include a 90° twisted nematic liquid crystal.
Claims31
A reflective liquid crystal display comprising:
- a cholesteric liquid crystal polarizing device;
- a liquid crystal cell;
- and
- an internal quarter-wave retarder;
- said cholesteric liquid crystal polarizing device, said liquid crystal cell, and said quarter wave retarder being superposed with one another.
2 more elements
A reflective liquid crystal display comprising:
- a linear polarizer, said linear polarizer having a polarization direction;
- a liquid crystal cell;
- a quarter-wave retarder, said quarter-wave retarder having a fast axis;
- a cholesteric liquid crystal polarizing device including a plurality of pixel regions;
- and
- an absorbing medium.
3 more elements
A method for fabricating a reflective liquid crystal display, said method comprising:
- providing a liquid crystal cell disposed adjacent to a thin film transistor array having a plurality of pixel regions;
- and
- superposing said liquid crystal cell with a cholesteric liquid crystal polarizing device.
A cholesteric liquid crystal polarizing device comprising:
- a substrate;
- an alignment layer;
- and
- a cholesteric liquid crystal polarizing layer including a plurality of pixel regions, wherein said pixel regions are arranged in a repeating array of red pixels, green pixels and blue pixels, said red pixels reflecting circularly polarized red light, said green pixels reflecting circularly polarized green light and said blue pixels reflecting circularly polarized blue light.
1 more element
Dependencies are inferred from the claim text.