Method of patterning cholesteric film using a laser and...

Details Method of patterning cholesteric film using a laser and... Method of patterning cholesteric film using a laser and...

2006-06-06

2006-06-06

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S187000, C430S020000

Reexamination Certificate

active

07057687

ABSTRACT:
The present invention provides a method of efficiently and precisely patterning cholesteric films. A cholesteric film13is firstly formed on an alignment film12provided on a glass substrate11. The cholesteric film13is then patterned by partially volatilizing and removing a part of the cholesteric film13by the application of laser light20having a wavelength not falling in the selective reflection wave range of the cholesteric film13.It is preferred that the wavelength of the laser light20be shorter than that of visible light. Alternatively, there may be used laser light20containing, as its main component, a component circularly polarized in the direction opposite to that of optical rotation of a component selectively reflected by the cholesteric film.

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patent: 4-314757 (1992-11-01), None
patent: 10-227998 (1998-08-01), None

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