Japan Display Inc.

Sony Corporation

Japan Display West Inc.

Magnolia White Corporation

Yoshitoshi Kida

Hiroshi Mizuhashi

Koji Noguchi

Kohei Azumi

Takayuki Nakanishi

Yoshiharu Nakajima

Hayato Kurasawa

Koji Ishizaki

Takeya Takeuchi

Yasuyuki Teranishi

Makoto Hayashi

Toshikazu Maekawa

Tsutomu Harada

Kouji Noguchi

Michio Yamamoto

Hirofumi Nakagawa

Jouji Yamada

Kozo Ikeno

Daisuke Takama

Toshinori Uehara

Mitsuhide Miyamoto

Kazuhiro Nishiyama

Shuji Hayashi

Daisuke Ito

Shigesumi Araki

Mitsutaka Okita

Masaki Murase

Toshiya Yamazaki

Yuji Suzuki

Shoji Hinata

Hiroaki Ichikawa

Naoyuki Itakura

Werapong Jarupoonphol

Tadayoshi Katsuta

Shinichiro Oka

Fumitaka Gotoh

Masahiro Minegishi

Yuichiro Minami

Yoshihiko Toyoshima

Masaaki Tonogai

Peter Wardlow Shadwell

David Pusey

Hiroyuki Kimura

Yusuke Takahashi

Takashi Nakamura

Yoshiro Aoki

Hidemasa Yamaguchi

Kazunori Yamaguchi

Hidetoshi Komatsu

Hideo Kataoka

Tomohiko Sato

Shinya Iuchi

Tomoyuki Fukano

Satoshi Ono

Makoto Jisaki

Toshihiro Yanagi

Hirotoshi Koyama

Kazuhisa Tomohiro

Shunsuke Noichi

Jarupoonphol Werapong

Kazuya Nomura

Osamu Mitsui

Mizuki Yamada

Naoshi Goto

A display panel with a touch detection function, in which display operation is less affected by touch detection operation, a method of driving the display panel with a touch detection function, a driving circuit, and an electronic unit having the display panel with a touch detection function are disclosed. The display panel with a touch detection function includes: one or more display elements; one or more drive electrodes; one or more touch detection electrodes; and a drive section selectively applying a DC drive signal or an AC drive signal to the drive electrodes.

Display panel with touch detection function, method of driving the same, driving circuit, and electronic unit

A common electrode for a display, which is originally provided in a liquid crystal display element, is also used as one (drive electrode) of a pair of electrodes for a touch sensor, and the other (detection-electrode-for-the-sensor) of the pair of electrodes is newly formed. An existing common drive signal as a drive signal for display is used in common for a drive signal for the touch sensor. A capacitance is formed between the common electrode and the detection-electrode-for-the-sensor, and touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. Thus, a display device with a touch sensor is also applicable to a mobile device in which electric potential of the user is inconstant in many cases. The newly-provided electrode is only the detection-electrode-for-the-sensor, and it is unnecessary to newly prepare a drive signal for the touch sensor.

Touch sensor device

There are provided a display panel with a touch detection function, a drive circuit, and an electronic unit, which make it possible to realize many functions related to touch detection. The display panel includes: one or more display elements; one or more drive electrodes extending in one direction; an electrode drive section integrated into a chip, and applying a drive signal to the drive electrodes; and one or more touch detection electrodes extending in a direction intersecting the direction in which the drive electrodes extend.

Display panel with touch detection function, drive circuit, and electronic unit

A display device is provided and includes signal line; pixel electrode; drive electrode opposed to pixel electrode; scanning lines; and display periods and a detection period in frame, wherein during one of display periods, common voltage is applied to drive electrode, scanning signal is applied to some scanning lines, pixel signal is applied to pixel electrode, wherein, during detection period, AC drive or pulse signal is applied to drive electrode, AC drive or pulse signal having pulses, wherein pulses during the detection period is less than number of some of scanning signal lines.

Display device with specific number of pulses of a drive signal applied during a detection

A display device is provided and includes scanning and signal lines; switch electrically coupled to scanning and signal lines; pixel electrode electrically coupled to switch and opposed to drive electrode; first and second display periods, and detection period between first and second display periods, wherein during first and second display periods,

Display device with display and detection periods that share the drive electrode

A display device comprises a first power supply line supplying a first potential, a second power supply line supplying a second potential, a third power supply line supplying a touch driving signal, and a display unit including a plurality of sub-pixels. The display unit comprises a plurality of first electrodes respectively provided in the plurality of sub-pixels and electrically connected to the first power supply line, a second electrode provided to be common among the plurality of sub-pixels and electrically connected to the second power supply line, a light emitting layer provided between the first electrode and the second electrode, a plurality of third electrodes electrically connected to the third power supply line, and a signal control circuit supplying a signal synchronized with a touch driving signal to the second electrode in a period in which a touch driving signal is supplied to the plurality of third electrodes.

Display device

A display panel including a display function layer displaying an image in a display area, a cover member including a first face and a second face disposed on an opposite side of the first face and faces the display panel, and a fingerprint sensor including a plurality of first detection electrodes disposed in a sensor base and configured to detect unevenness of an object brought into contact with or approaching the first face of the cover member, a shield electrode disposed to face the plurality of first detection electrodes and configured to suppress a change in capacitance between the first detection electrodes and the shield electrode, and switching elements disposed in correspondence with the first detection electrodes, the fingerprint sensor being arranged between the cover member and the display panel and arranged to overlap with the display area when viewed in a direction perpendicular to the first face are included.

A display device is provided and includes a substrate; pixel electrode on the substrate; a signal line coupled to the pixel electrode; a plurality of drive electrodes including a first drive electrode overlapping the signal line; a drive signal line configured to supply a drive signal to the first drive electrode; and a drive electrode switch connecting the drive signal line and the first drive electrode, wherein during a touch detection period, the drive electrode switch is closed to apply the drive signal to the first drive electrode.

Growing community of inventors

Kanagawa, Japan

Yoshitoshi Kida