Panasonic Liquid Crystal Display Co., Ltd.

Japan Display Inc.

Hitachi Displays, Ltd.

Paneltouch Technologies LLC

Hitachi, Ltd.

Hitachi Device Engineering Co., Ltd.

Shinya Hashimoto

Masaru Ito

Hiroyuki Takahashi

Takahiro Yamada

A display device includes a display panel, and an electrostatic capacitive type touch panel which is formed in an overlapping manner with the display panel. A plurality of X electrodes and a plurality of Y electrodes intersecting with the X electrodes. A first signal line supplies signals to the X electrodes, a second signal line supplies signals to the Y electrodes, and the first signal line and the second signal line are formed on a flexible printed circuit board. A dummy electrode is formed adjacent to an electrode portion of each X electrode and electrode portion of each Y electrode, the dummy electrode does not overlap the X electrode and the Y electrode, and the dummy electrode does not electrically connect with the first and second signal lines.

Display device with touch panel having X, Y and dummy electrodes

A display device having X electrodes and Y electrodes formed on an electrostatic capacitive type touch panel. Either one of the X electrodes and the Y electrodes is divided corresponding to a ratio between the number of X electrodes and the number of Y electrodes, and a floating electrode is formed in gaps formed along with the reduction of area of the electrode thus adjusting the area of the electrode. A first signal line and second signal lines are branched on a flexible printed circuit board so that both ends of a respective X electrode are supplied with a signal from the branched first signal line and both ends of a respective Y electrode are supplied with a signal from the branched second signal line.

Display device with X and Y electrodes having both ends of a respective electrode supplied with a signal form a branched signal line

Growing community of inventors

Mobara, Japan

Shinya Hashimoto