Reflective liquid crystal display apparatus

Details Reflective liquid crystal display apparatus Reflective liquid crystal display apparatus

2009-08-19

2010-11-30

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

C349S113000

Reexamination Certificate

active

07843515

ABSTRACT:
At least one exemplary embodiment is directed to a reflective liquid crystal display apparatus which includes a polarization beam splitter having a polarization split film used as both a polarizer and an analyzer; a reflective liquid crystal display device; a quarter wave plate; and a projection optical system; where the absolute value of phase difference of diffracted light generated by the reflective liquid crystal display device in a black display state is reduced by the phase difference of the quarter wave plate, and thus the amount of stray light of the diffracted light guided from the polarizing beam splitter to the projection optical system decreases.

REFERENCES:
patent: 5327270 (1994-07-01), Miyatake
patent: 5903388 (1999-05-01), Sedlmayr
patent: 02-250026 (1990-10-01), None

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