Patent ID: 8081154
Filing Date: 2011-12-20
Classification: G09G

Abstract:
1. A liquid crystal device capable of executing temperature compensation, comprising a liquid crystal panel with a liquid crystal layer sandwiched between a pair of substrates having respective driving electrodes and alignment layers formed by inorganic vapor-deposited films made of SiOx, over respective surfaces of the substrates, opposed to each other, a driving circuit for outputting a driving voltage for driving the liquid crystal panel, and a temperature sensor for detecting an ambient temperature: the driving circuit including a control circuit for varying a pulse width or a pulse height of the driving voltage; the control circuit including a first temperature compensation range where the pulse width or the pulse height of the driving voltage is increased from a high temperature side toward a low temperature side in a temperature compensation range of the liquid crystal panel, according to temperature information detected by the temperature sensor, and a second temperature compensation range where the pulse width or the pulse height of the driving voltage is rendered maximum at a predetermined temperature not higher than 0° C. at a boundary between the first temperature compensation range, and the second temperature compensation range before the pulse width or the pulse height of the driving voltage is rendered substantially equal to, or smaller than a maximum pulse width or a maximum pulse height of the driving voltage, on a side of the boundary, lower than the predetermined temperature, wherein the liquid crystal layer is composed of ferroelectric liquid crystals with a memory effect having at least two stable states, the driving circuit outputs a reset pulse to reset the liquid crystal panel into one of the stable states when a temperature detected by the temperature sensor is turned to the predetermined temperature or lower than the predetermined temperature.