Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2008-11-17
2010-12-28
Doan, Jennifer (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S056000, C349S084000, C349S113000, C349S117000
Reexamination Certificate
active
07859619
ABSTRACT:
A transflective liquid crystal display device includes a liquid crystal panel including first and second substrates and a liquid crystal layer between the first and second substrates, the liquid crystal panel including a plurality of pixel regions each including a pixel electrode; a polarizing plate on an outer surface of the second substrate and having a polarizing axis of a first direction; a selective reflection plate on an outer surface of the first substrate and having a polarizing axis of a second direction, the selective reflection plate reflecting a light having an optical axis different from the second direction; a backlight unit on an outer surface of the selective reflection plate; a gamma reference voltage generating circuit including first and second portions, the first portion generating first gamma reference voltages in a reflective mode, the second portion generating second gamma reference voltages in a transmissive mode; a data driving circuit supplying a data voltage to the pixel electrode using the first and second gamma reference voltages in the reflective and transmissive modes, respectively, wherein the pixel region is a reflective region in the reflective mode, and the pixel region is a transmissive region in the transmissive mode.
REFERENCES:
patent: 7133015 (2006-11-01), Yoshida et al.
patent: 2009/0224245 (2009-09-01), Umezaki
patent: 2002-090773 (2002-03-01), None
Doan Jennifer
LG Display Co. Ltd.
Morgan & Lewis & Bockius, LLP
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