DISPLAY DEVICE

PROBLEM TO BE SOLVED: To reduce the effect of noise at the time of touch detection, without being affected by noise due to lighting control of a back light, and to enable touch detection with high accuracy of detection.SOLUTION: A touch detection unit uses a touch panel 17 for the touch detection of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TEZUKA YASUSHI, AOKI TAMOTSU
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the effect of noise at the time of touch detection, without being affected by noise due to lighting control of a back light, and to enable touch detection with high accuracy of detection.SOLUTION: A touch detection unit uses a touch panel 17 for the touch detection of a proximity object. The touch detection unit performs touch detection in a period excluding a scanning period when one screen is scanned through plural scanning signal lines of a liquid crystal panel 14. A back light 16 performs lighting control so that the back light is turned on/off in a period excluding the period when touch detection is performed.