DISPLAY DEVICE

• Main Authors: TSUYUSAKI SEIICHI, TOKITA MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 22.10.2015
• Subjects: CALCULATING; COMPUTING; COUNTING; 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; ELECTRIC DIGITAL DATA PROCESSING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To reduce the effect of a fictions touch "ghost" in touch detection.SOLUTION: A display device includes (a) detecting the presence or absence of noise or adhesion of a water droplet on the basis of currents flowing in a plurality of detection electrodes when a touch panel scanning voltage is supplied to the counter electrode of each of an m number of separate blocks; and (b) assuming that an (m+1) number of counter electrodes are present for the counter electrode of each of the m number of separate blocks, also assuming that a touch panel scanning voltage is supplied, which is synchronized with a touch panel scanning voltage supplied to the counter electrode of each of the m number of blocks, for the (m+1) number of the counter electrodes, and determining on the basis of currents flowing in the detection electrodes whether the presence is noise or a water droplet. 【課題】タッチ検出における架空タッチ『ゴースト』の影響を少なくする。【解決手段】表示装置は、（ａ）ｍ個に分割された各ブロックの対向電極に対してタッチパネル走査電圧が供給された際に、複数の検出電極に流れる電流に基づき、ノイズまたは水滴の付着の有無を検出するにされ、（ｂ）前記ｍ個に分割された各ブロックの対向電極に対して、（ｍ＋１）個目の対向電極が存在すると仮定し、且つ、当該（ｍ＋１）個目の対向電極に対して、前記ｍ個に分割された各ブロックの対向電極に対して供給されるタッチパネル走査電圧と同期したタッチパネル走査電圧が供給されたものと仮定して、前記複数の検出電極に流れる電流に基づき、ノイズおよび水滴のいずれであるかを判別するにされる。【選択図】図２６