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1. (WO2017154657) LIQUID CRYSTAL DISPLAY DEVICE WITH BUILT-IN TOUCH SENSOR, AND DRIVE METHOD FOR THE DEVICE

Pub. No.:    WO/2017/154657    International Application No.:    PCT/JP2017/007660
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Mar 01 00:59:59 CET 2017
IPC: G09G 3/36
G02F 1/133
G02F 1/1368
G06F 3/041
G06F 3/044
G09G 3/20
G09G 3/34
Applicants: SHARP KABUSHIKI KAISHA
シャープ株式会社
Inventors: AOKI, Atsushi
青木 淳
KITAGAWA, Daiji
北川 大二
HATA, Masayuki
畠 雅幸
ORITA, Yoshitaka
折田 善崇
Title: LIQUID CRYSTAL DISPLAY DEVICE WITH BUILT-IN TOUCH SENSOR, AND DRIVE METHOD FOR THE DEVICE
Abstract:
The purpose of the present invention is to suppress the occurrence of flicker when a switch is made from an idle period to a display period in a liquid crystal display device with built-in touch sensor that uses a common electrode as an electrode for touch detection. A display drive unit performs an image data write process that applies voltage to a pixel electrode while the backlight kept in an unlighted state by a backlight control unit in at least a portion of the idle period. For example, the display drive unit applies a voltage corresponding to a specific image or a black image to the pixel electrode for every prescribed period through the idle period. Also, for example, the display drive unit applies voltage corresponding to the display image to the pixel electrode in the period of the idle period that occurs immediately prior to a switch to the display period.