Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2004-09-14
2008-10-21
Font, Frank G (Department: 2883)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S112000
Reexamination Certificate
active
07440050
ABSTRACT:
An object of the invention is to provide a reflective structure which can cause diffused reflecting light to have a desired directivity more reliably and an apparatus with it. An optical diffusing reflective structure1having an optical reflective layer20whose surface is roughened and which is supported by a base layer10.The optical reflective layer20comprises mesh potions2harranged in mesh form and each having one shape of a cave and a rise and a net portion2M continuously extending around these mesh portions2hin net form and having the other shape of a cave and a rise. The net portion2M is classified in a plan view into a first extending elements Po′ extending in a predetermined first direction #1and in a second direction #2that intersects the first direction #1almost at a right angle and a second extending elements Ps′ extending substantially at 45° with respect to the first and second directions #1and #2.The first and second extending elements Po′ and Ps′ have the respective substantially constant widths, and widths of the first extending elements Po′ are greater than widths of the second extending elements Ps′ to have greater effective reflective surface area per unit extending length.
REFERENCES:
patent: 2002/0067445 (2002-06-01), Tsai et al.
patent: 2003/0142247 (2003-07-01), Nishiyama et al.
patent: 2003/0218698 (2003-11-01), Otake et al.
patent: 0883015 (1998-12-01), None
patent: 0921440 (1999-06-01), None
PCT International Search Report of Counterpart PCT Application No. PCT/IB2004/051748.
Font Frank G
Liu & Liu
TPO Hong Kong Holding Limited
Wong Eric
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