Projection LCD having a sheet polarizer with protective layers o

Details Projection LCD having a sheet polarizer with protective layers o Projection LCD having a sheet polarizer with protective layers o

1997-10-27

2000-07-25

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349138, 349122, G02F 11333, G02F 11335

Patent

active

060942452

ABSTRACT:
A liquid crystal projector has a pre-sheet polarizer and an incoming light side sheet polarizer on the incoming light side of a liquid crystal panel. Two sheet polarizers superimposed to each other are stuck on the outgoing light side face of the liquid crystal panel. The degree of polarization of the pre-sheet polarizer is smaller than that of the incoming light side sheet polarizer, so that both the sheet polarizers suitably share the quantity of absorbed light. Similarly, the degree of polarization of the incoming light side one of the sheet polarizers stuck on the outgoing light side face of the liquid crystal panel is smaller than that of the other one, so that both the sheet polarizers suitably share the quantity of absorbed light. With this configuration, the durability of the sheet polarizer is improved and the light output is increased.

REFERENCES:
patent: 4387133 (1983-06-01), Ichikawa et al.
patent: 4592623 (1986-06-01), Yamamoto et al.
patent: 5818559 (1998-10-01), Yoshida
patent: 5838415 (1998-11-01), Hayashi et al.
patent: 5880800 (1999-03-01), Mikura et al.

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