Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-01-25
2005-01-25
Dudek, James A. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S074000
Reexamination Certificate
active
06847427
ABSTRACT:
A liquid crystal display apparatus arranged with a light guide plate of an illuminating apparatus between two liquid crystal panels for increasing an efficiency of utilizing light of the illuminating apparatus to thereby increase brightness both in a transmission display mode and a reflection display mode. For that object, there is constructed a constitution of providing a first lower polarizer between a first liquid crystal panel and a light guide plate, a second lower polarizer between a second liquid crystal panel and the light guide plate and a reflection-polarizing plate between the light guide plate and the second lower polarizer. Thereby, the efficiency of utilizing light of the illuminating apparatus can be increased. Further, a transmission axis of the first lower polarizer and a reflection axis of the reflection-polarizing plate are aligned in the same direction and a transmission axis of the second lower polarizer is set to make an angle θ (incidentally, θ is an angle other than 90 degrees) relative to the reflection axis of the reflection-polarizing plate. A rate of reflection/transmission of the second liquid crystal panel can freely be set by changing the angle.
REFERENCES:
patent: 5592314 (1997-01-01), Ogasawara et al.
patent: 5742367 (1998-04-01), Kozaki
patent: 20040100598 (2004-05-01), Adachi et al.
Adams & Wilks
Dudek James A.
Seiko Instruments Inc.
LandOfFree
Liquid crystal display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid crystal display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3430278