Active matrix for liquid crystal displays having two switching means and discharging means per pixel

摘要

An active matrix for liquid crystal displays having a plurality of picture elements, a plurality of address buses to which an address signal having a high signal level and a low steady state signal level is applied, and a plurality of data buses orthogonal to the address buses. Each picture element includes at least one display electrode device; a first switching device coupled between the display electrode device and a first respective one of the address buses and a respective one of the data buses; and a second switching device coupled between the display electrode device and a second respective one of the address buses and the respective data bus. The second switching device includes a device for preventing the display electrode from discharging whereby a substantially same voltage is maintained at the display electrode during the time when the address signal changes from the high level to the low level.