PIXEL CIRCUIT, DRIVING METHOD OF THE PIXEL CIRCUIT, DRIVING CIRCUIT AND ELECTROOPTICAL DEVICE

• Main Authors: KATSUSE HIROFUMI, ISHII MAKOTO, MATSUMOTO KAZUHIRO
• Format: Patent
• Language: English
• Published: 30.06.2011
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To provide a driving method of an electrooptical device with ultralow power consumption. SOLUTION: In the electrooptical device that updates image data based on image data held in a pixel, by presetting one signal among a plurality of signals for controlling an image data updating means within a pixel circuit before the signal becomes active, it is possible to make inactive voltages of the plurality of signals constant and reduce a required voltage level. Further, by making active timing of the plurality of signals periodical and making an active period width fixed, it is possible to simplify a configuration of a peripheral circuit such as a power circuit and a signal generation circuit, and further prevent long-term direct current application to an electrooptical element, and extend a life of the electrooptic element. COPYRIGHT: (C)2011,JPO&INPIT