Liquid crystal cells – elements and systems – Particular structure – Interconnection of plural cells in series
Reexamination Certificate
2008-07-15
2008-07-15
Schechter, Andrew (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Interconnection of plural cells in series
C349S075000, C349S096000, C349S101000, C349S193000
Reexamination Certificate
active
07400367
ABSTRACT:
The invention provides a viewing angle control element capable of realizing high information concealment without damaging brightness of transmitted light and dynamically changing a viewing angle in accordance with need or no need of information concealment. The viewing angle control element according to the invention can include liquid crystal twist-aligned by approximately 180°, and have a liquid crystal layer being electrically controllable and a pair of polarizing layers provided at both sides of the liquid crystal layer. Optical axes of both polarizing layers can be arranged to be substantially parallel to each other, and liquid crystal molecules of the liquid crystal layer adjacent to the polarizing layers can be aligned to be substantially parallel to the optical axes of the polarizing layers.
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Chen W. Patty
Oliff & Berridg,e PLC
Schechter Andrew
Seiko Epson Corporation
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