DISPLAY DEVICE AND DRIVE METHOD FOR DISPLAY DEVICE

• Main Authors: YOSHIOKA TOSHIHIRO, MIYAZAKI HARUHITO
• Format: Patent
• Language: English; Japanese
• Published: 09.05.2019
• Subjects: ACCESSORIES THEREFOR; ADVERTISING; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CINEMATOGRAPHY; 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; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

To provide a display device that has a simple circuit configuration and that can achieve low power consumption; and a drive method for the display device.SOLUTION: Control is performed so that: rectangular wave voltage that varies between 0 volts and positive voltage V11 is applied to a facing electrode 26 of a reverse mode screen 21 at a period that is two times of a period that cause an optical state of an optical layer to change; and pulse voltage is applied to a control electrode 27 to achieve potential difference between electrodes that causes the optical state to change at timing that causes the optical state of the optical layer 25 to change, the pulse voltage being applied in a superimposed manner to rectangular wave voltage that varies between 0 volts and positive voltage V12 having the same period and phase as the rectangular voltage that is applied to the facing electrode 26 and having the same value as the V11.SELECTED DRAWING: Figure 5 【課題】簡単な回路構成であるとともに、低消費電力化を図ることができる表示装置および表示装置の駆動方法を提供する。【解決手段】リバースモードのスクリーン２１の対向電極２６には、光学層の光学状態を変化させる周期の２倍の周期で、正の電圧Ｖ１１と０ボルトとの間で変化する矩形波電圧を印加し、制御電極２７には、対向電極２６に印加した矩形波電圧と同じ周期かつ同相でＶ１１と同じ値である正の電圧Ｖ１２と０ボルトとの間で変化する矩形波電圧に光学層２５の光学状態を変化させるタイミングで光学状態が変化する電極間電位差となるパルス電圧を重畳させて印加するように制御する。【選択図】図５