Driving method for a liquid crystal display
US5786799A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1995 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3625
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A driving method for a liquid crystal display is provided with the steps of (a) applying a row select voltage to each of the row electrodes simultaneously, the row select voltage corresponding to an element of an orthogonal matrix and being either +1 or -1 ; (b) conducting an exclusive-or operation with respect to each element of a row select vector and a display vector, the row select vector indicating the row select voltages by vector notation and the display vector indicating a display data by the vector notation, and conducting a summation of each exclusive-or operation; (c) applying to the column electrode a voltage of a level which varies depending on the summation so as to simultaneously drive the plurality of rows; and (d) in a case where all the display data correspond to ON display or OFF display in the step (c), assigning the row select voltage, applied to either the selected row electrode having the lowest select voltage among driving voltages within one frame period for the ON display or the selected row electrode having the highest select voltage among the driving voltages within one frame period for the OFF display, to a virtual row electrode outside a display area, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.