Retardation compensator and single-panel type color liquid...

Details Retardation compensator and single-panel type color liquid... Retardation compensator and single-panel type color liquid...

2003-12-29

2008-12-23

Nguyen, Dung T. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S005000

Reexamination Certificate

active

07468769

ABSTRACT:
A form birefringence to compensate the phase retardation caused by a liquid crystal device has a retardation compensation film that is composed of alternately deposited high and low refractive index layers. The retardation compensation film is provided in at least one of the incident side and the emanation side of the liquid crystal device. The birefringence value Δn and the total thickness d of the retardation compensation film are adjusted such that the retardation of the retardation compensation film agrees with the retardation of the liquid crystal device at least at one wavelength in the visible band.

REFERENCES:
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patent: 2002-31782 (2002-01-01), None
patent: 2002-131750 (2002-05-01), None
J. P. Eblen, Jr., “17.4: Birefringent Compensators for Normally White TN-LCDs,” Symposium Digest, Society for Information Display, 1994, pp. 245-248.

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