Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-04-19
2005-04-19
Shankar, Vijay (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S050000, C345S055000, C345S088000, C345S099000, C345S100000
Reexamination Certificate
active
06882332
ABSTRACT:
The invention relates to a display device which includes a driver circuit and a liquid crystal display with a plurality of rows R and columns C. The invention also relates to a driver circuit for driving a display. In order to reduce the power consumption of display devices, displays are operated in the partial display mode. According to the MRA (Multiple Row Addressing) technique a plurality of rows p is driven simultaneously. The number of rows p to be simultaneously driven, however, differs for displays of different size. When a display is operated in the partial display mode, therefore, for an optimum optical performance it is necessary that the value p of the rows to be simultaneously driven is other than this number in full size operation. In order to drive the rows R and columns C, at least p+1 voltages are required when F=GMAX. Because the number of simultaneously driven rows is reduced upon a transition from the full size mode of operation to the partial display mode, it is also no longer necessary to generate as many voltages as would be required for operation in the full size mode. Therefore, upon transition to the partial display mode the voltage driver stages that are no longer required are switched off by way of a switching device. As a result, displays of different size can also be driven by means of one driver circuit.
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T.N. Ruckmongathan, “Some New Addressing Techniques for RMS Responding Matrix LCDS”, Feb. 1988, PHD Thesis, Indian Institute of Science, Bangalore, pp. vi, vii, 3.3-3.51, 4.1-4.14, 4.36-4.51, XP002240917.
Duisters Anthonius Franciscus
Zeiter Dominik
Shankar Vijay
Shapiro Leonid
Simons Kevin
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