Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2006-01-03
2006-01-03
Wu, Xiao (Department: 2674)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S063000, C349S033000
Reexamination Certificate
active
06982691
ABSTRACT:
There is provided a method of driving a cholesteric liquid crystal display (LCD) panel by sequentially applying a selection line voltage to individual scan electrode lines and simultaneously applying data signals to all data electrode lines in order to select a state of each cholesteric liquid crystal cell according to a given gray scale level. Each selection time, during which the selection line voltage is applied to a certain scan electrode line and simultaneously the data signals are applied to all of the data electrode lines, is constant. Each selection time is divided into a first part time and a second part time. A low selection line voltage is applied to a relevant scan electrode line during the first part time. A high selection line voltage having a level different from that of the low selection line voltage is applied to the relevant scan electrode line during the second part time. A data pulse having a width corresponding to either the first part time or the second part time is applied to all of the data electrode lines at different time points according to the gray scale level of a relevant cholesteric liquid crystal cell during the selection time.
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Choi Woon-Seop
Kim Min-Kyu
Lee Hee-Jung
Lee Nam-Seok
Shin Hyun-Soo
Bushnell , Esq. Robert E.
Fatahi-yar M.
Samsung SDI & Co., Ltd.
Wu Xiao
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