Japan Display Inc.

Takahiko Endo

Hirotaka Hayashi

Masahiro Tada

Satoru Tomita

Takayuki Imai

Miyuki Ishikawa

Masayoshi Fuchi

Yasuo Saruhashi

Takashi Okada

Hideyuki Takahashi

Masahiro Yoshida

Takashi Nakamura

Keiichi Saito

In one embodiment, a display device having a touch function includes an insulating substrate and a plurality of pixels formed on the insulating substrate and arranged in a matrix of rows and columns. The pixels form a plurality of pixel blocks formed of a plurality of rows and columns of the pixels. A sensor circuit is arranged in a space between adjacent pixels on the insulating substrate and includes a coupling electrode, a detection electrode arranged adjacent to the coupling electrode for forming a coupling capacitance therebetween, and a reading-out circuit to read out a potential of the detection electrode. At least one sensor circuit is arranged in each pixel block. The contact or non-contact by a fingertip or a nib is detected by a potential difference of the detection electrode.

Display device with integrated touch function

According to one embodiment, a sensor module includes a first sensor circuit, a second sensor circuit and a differential circuit. The first sensor circuit includes a first detection electrode, a first amplifier formed of a thin-film transistor and a first coupling capacitor. The second sensor circuit includes a second detection electrode, a second amplifier formed of a thin-film transistor and a second coupling capacitor. The differential circuit is connected to the drain electrode of the first amplifier and the drain electrode of the second amplifier.

Sensor module and display device

Growing community of inventors

Saitama-ken, Japan

Takahiko Endo