Transflective liquid crystal display device having...

Details Transflective liquid crystal display device having... Transflective liquid crystal display device having...

2006-02-14

2006-02-14

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S121000, C349S119000, C349S180000, C349S181000

Reexamination Certificate

active

06999144

ABSTRACT:
A transflective liquid crystal device capable of balancing a color difference between a reflective region and a transmissive region. The arrangement conditions of optical elements in the transflective LCD are as follows. The twist angle of the liquid crystal is about 40°˜80°. The angles βup, βdown, θupand θdownare about −20°˜−60°, −20°˜20°, 60°˜110°, −30°˜20° respectively. The angle between the retardation axes of the upper λ/2 plate and the upper λ/4 plate is about 30°˜100°, and the angle between the retardation axes of the lower λ/2 plate and the lower λ/4 plate is about 30°˜80°.

REFERENCES:
patent: 6295109 (2001-09-01), Kubo et al.
patent: 6801283 (2004-10-01), Koyama et al.

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