Transflective liquid crystal display having first and second...

Details Transflective liquid crystal display having first and second... Transflective liquid crystal display having first and second...

2008-05-27

2008-05-27

Nelms, David C. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

Reexamination Certificate

active

07379138

ABSTRACT:
In a transflective LCD, it is possible to cause the change in the optical characteristics of the liquid crystal layer in the transmission area between operating states to be different from the change in the optical characteristics of the liquid crystal layer in the reflection area by using different applied voltages in the transmission and reflection areas. In the first operating state, the liquid crystal layer in the transmission area and the liquid crystal layer in the reflection area are used as a half-wave plate to change the linear polarization axis of the traversing light. In the second operating state, the liquid crystal layer in the transmission area does not affect the polarization axis of the traversing light, but the liquid crystal layer in the reflection area is used as a quarter-wave plate. As such, no additional half-wave plates and quarter-wave plates are needed.

REFERENCES:
patent: 6795147 (2004-09-01), Starkweather
patent: 7133095 (2006-11-01), Kang
patent: 2005/0094068 (2005-05-01), Ikeno et al.
patent: 1561457 (2005-01-01), None
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patent: 2004-157509 (2004-06-01), None
patent: 2004-199030 (2004-07-01), None

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