Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1989-09-06
1992-10-20
Brier, Jeffery A.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340805, G09G 336
Patent
active
051573873
ABSTRACT:
A method and circuit for activating a liquid crystal matrix display panel in which during each selecting period, each liquid crystal cell pixel of the matrix, whether selected or unselected, receives either a primary selecting signal voltage or non-selecting signal voltage as well as an additional different secondary voltage to generate substantially homogeneous crosstalk noise over the entire display. The signal voltage applied to a pixel during a selecting period can vary between a primary selecting or non-selecting voltage applied for a first time interval followed by or preceded by a secondary voltage intermediate the selecting and non-selecting voltage applied for a second interval. Alternatively, the primary signal voltage applied to the pixel for a first time interval can be a selecting or non-selecting voltage and secondary voltage applied for a second time interval can be the other. In another embodiment of the invention, the relative duration of the primary and secondary voltages affects the darkness gradation of the display.
REFERENCES:
patent: 4180813 (1979-12-01), Yoneda
patent: 4586039 (1986-04-01), Nonomura et al.
patent: 4626841 (1986-12-01), Togashi
patent: 4656470 (1987-04-01), Saka
patent: 4730140 (1988-03-01), Masubuchi
patent: 4857906 (1989-08-01), Conner
patent: 4906984 (1990-03-01), Tukeda et al.
patent: 4926168 (1990-03-01), Yamamoto et al.
patent: 4945352 (1990-07-01), Ejiri
"A Pocket-Size Liquid-Crystal TV Display", by E. Kaneko, et al., Proceedings of the SID, vol. 23, I. 1982, pp. 3-8.
Imamura Yoichi
Momose Yoichi
Sakurai Yoichi
Brier Jeffery A.
Kaplan Blum
Liang Regina
Seiko Epson Corporation
LandOfFree
Method and apparatus for activating a liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for activating a liquid crystal display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for activating a liquid crystal display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-195077