Patent ID: 7034798
Filing Date: 2006-04-25
Classification: G09G

Abstract:
1. A liquid crystal display driving method wherein pulse driving voltages are applied to liquid crystal through a plurality of scanning electrodes and a plurality of signal electrodes which face and cross each other, the liquid crystal exhibiting a cholesteric phase at room temperature, wherein: said driving method comprises a reset step of resetting the liquid crystal to an initial state, a selection step of selecting a final state of the liquid crystal and an evolution step of causing the liquid crystal to evolve to the state selected in the selection step; the selection step comprises a selection pulse application step of applying a selection pulse in accordance with image data; and a ratio of a length of the selection pulse application step to a length of the selection step is changed with changes in temperature, such that the ratio is small in a low temperature range due to a length of the selection pulse application step being long and such that the ratio is large in a high temperature range due to the length of the selection pulse application step being short.