The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2000
Filed:
Jun. 30, 1995
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A ferroelectric liquid crystal panel including a plurality of scanning electrodes, a plurality of signal electrodes crossing the scanning electrodes, a ferroelectric liquid crystal material having two stable orientation states corresponding to different memory angles and provided at intersections of the plurality of scanning electrodes and the plurality of signal electrodes to form a plurality of pixels is driven. The plurality of pixels each have a first threshold characteristic regarding a voltage for switching a display state of the pixel into a non-display state and a second threshold characteristic regarding a voltage for switching the non-display state of the pixel into the display state. An apparatus for driving the ferroelectric liquid crystal panel includes a temperature sensor detecting an operation temperature of the ferroelectric liquid crystal panel; and signal output for outputting a driving signal based on a field frequency fixed at a prescribed reference frequency and a frame frequency determined in correspondence with the operation temperature of the ferroelectric liquid crystal panel detected by the temperature sensor, and writing the driving signal into each of the plurality of pixels at a writing time corresponding to a response time of each of the plurality of pixels changing in accordance with the operation temperature.