Sharp Kabushiki Kaisha Corporation

Takenori Maruyama

Kazutoshi Kida

Yasuhiro Sugita

Shinji Yamagishi

Jean Mugiraneza

Takuma Yamamoto

Kenshi Tada

Hiroshi Fukushima

Hiroyuki Ogawa

Hidetsugu Kawamori

Yukio Mizuno

Shogo Hayashi

Kazuya Yoshimura

Yuhji Yashiro

Shinji Matsumoto

Hideki Shioe

Akira Yasuta

Kohji Michibayashi

Tsuyoshi Ohmori

Yutaka Ishida

Takashi Saitoh

Kazuyoshi Maeda

Hideo Hosorogi

A touch panel system includes an electrostatic capacitance type touch panel including a drive electrode, a position detection electrode, and a pressing force detection electrode; and a controller configured to provide a drive signal to the drive electrode and acquire a position signal value from the position detection electrode and a pressing force signal value from the pressing force detection electrode. The controller detects a position of a pointer based on the position signal value, and acquires a pressing force generated by the pointer based on a rate of change of a smoothed value of the pressing force value based on the pressing force signal value.

Touch panel system, display device, and method for controlling touch panel system

A touch panel includes a first substrate and a second substrate. The touch panel includes a drive electrode formed on a surface of the first substrate, a position sensor electrode and a pressing force sensor electrode formed on a surface of the second substrate, a position sensor wiring line that connects the position sensor electrode to a terminal portion, a pressing force sensor wiring line that connects the pressing force sensor electrode to the terminal portion, and a shield wiring line disposed between the position sensor wiring line and the pressing force sensor wiring line in a plan view.

Touch panel and display device

There are provided an antenna device with improved antenna performance while suppressing a decrease in yield and a decrease in viewability, and a display device including the same. The antenna device includes an antenna substrate, a first antenna pattern formed on a first main surface of the antenna substrate, and a second antenna pattern formed on a second main surface opposite to the first main surface of the antenna substrate. The first antenna pattern and the second antenna pattern are formed such that positions on the front and back of the antenna substrate coincide with each other, and at least a part of the antenna substrate is transparent to transmit an image.

Antenna device and display device provided with same

A position detecting device including an antenna function includes a plurality of electrodes including a plurality of shared electrodes separated by spaces, a position detection circuit configured to detect a position by energizing the plurality of electrodes and using electric fields generated between the plurality of electrodes, an antenna circuit configured to perform wireless communication by energizing the plurality of shared electrodes and using magnetic fields generated in the spaces, and a switch connected to at least the plurality of shared electrodes among the plurality of electrodes, the position detection circuit, and the antenna circuit, the switch being configured to selectively connect either the position detection circuit or the antenna circuit to the plurality of shared electrodes.

Position detecting device including antenna function and display device

touch panel includes a first substrate including a first surface, a second substrate including a second surface opposite to the first surface, a drive electrode formed on the first surface, and a position sense electrode, a pressing force sense electrode, and a shield electrode that are formed on the second surface. The shield electrode is disposed between the position sense electrode and the pressing force sense electrode, and, in a plan view when viewing the second substrate from the first substrate, the drive electrode covers at least a portion of the pressing force sense electrode, and at least a portion of an end portion of the drive electrode is positioned above the shield electrode.

A position detecting device including an antenna function includes a plurality of first position detection electrodes, a plurality of second position detection electrodes, a position detection circuit, a plurality of first antenna electrodes disposed adjacent to the plurality of first position detection electrodes and separated by first spaces, a plurality of second antenna electrodes disposed adjacent to the plurality of second position detection electrodes and separated by second spaces, and an antenna circuit configured to perform wireless communication by energizing the plurality of first antenna electrodes and the plurality of second antenna electrodes and using magnetic fields generated in the first spaces and the second spaces.

An antenna device includes antenna portions arranged side by side in columns with a partial overlap between the antenna portions next to each other, and common lines each connected to and shared by a set of the antenna portions not overlapping each other to collectively activate the set of the antenna portions.

Antenna device, position input device including antenna device, and display device including antenna device

To enable both touched position detection and pressing force detection without increasing the thickness of a touch panel. A driving electrode () is formed on the top face of a piezoelectric polymer layer (). A touch detection electrode () and a pressing force detection electrode () are formed on the bottom face of the piezoelectric polymer layer ().

Display device with touch panel providing touched position detection and pressing force detection

A display device includes a display panel displaying an image, a transparent antenna substrate arranged on one surface of the display panel and having transparency, a first conductive film having a mesh shape and arranged on a surface of the transparent antenna substrate opposite to the display panel, and a second conductive film having a mesh shape and arranged on a surface of the transparent antenna substrate facing the display panel. The first conductive film includes an antenna body portion having a thin film pattern and insulated from a surrounding portion by a slit, and the antenna body portion constitutes a transparent antenna performing wireless communication with an external communication device.

Display device and communication system

The purpose of the present invention is to achieve further miniaturization and performance improvement in a pressure detection type touch panel. The touch panel () includes a TP upper side electrode layer () located above the CF substrate (), a TP lower side electrode layer () located below the CF substrate () and above the liquid crystal layer (), and a piezoelectric element layer () located between the TP upper side electrode layer () and the TP lower side electrode layer ().

Touch panel and electronic device

The purpose of the present invention is to achieve further miniaturization and performance improvement in a pressure detection-type touch panel. The touch panel () includes a TP upper side electrode layer () located above a CF substrate (); and a TP lower side electrode layer () located below the CF substrate () and above a liquid crystal layer (); an ITO layer () located above the TFT substrate () and below the liquid crystal layer (); and a piezoelectric element layer () located between the TP lower side electrode layer () and the ITO layer ().

The present invention simultaneously detects a location of an electric conductor and pressure that is applied by the electric conductor. A touch panel () includes a plurality of sensing electrodes () that extend in a first direction for detecting a touch location based on an electrostatic capacitance; and pressure detecting electrodes () each of which extends in the first direction and is provided between adjacent two of the plurality of sensing electrodes (). Each of the pressure detecting electrodes () has a width smaller than that of each of the sensing electrodes () and has resistance that changes in response to applied pressure.

Capacitance type touch panel with built-in pressure sensor

A liquid crystal display device includes an array board, a CF board, detection electrodes, drive electrodes, and position detection lines. The array board includes TFTs in a display area and a display circuit that includes at least monolithic circuits in a non-display area. The CF board is opposed to the array board with a gap. The detection electrodes are arranged on an outer surface of the CF board in the display area to extend along the first direction. The drive electrodes are arranged on an inner surface of the CF board in the display area to extend along the second direction. The position detection lines are arranged on the inner surface of the CF board in the non-display area for transmitting signals to the drive electrodes. The position detection lines are arranged to overlap the monolithic circuits.

Display device with position inputting function

A crystal display deviceincludes TFTs, pixel electrodes, common electrodes, an array board, a CF board, detection electrodes, drive electrodes , a driver, a row control circuit, and a touch controller. The detection electrodes are included in the CF board. The drive electrodes are included in the CF board. The driver and the row control circuit are included in a display driver portion for supplying scan signals and data signals to the TFTs for display driving. The touch controller supplies drive signals to the drive electrodes and detects position detection signals output by the detection electrodes to perform position detection control. The touch controller supplies the drive signals to the drive electrodes to drive the drive electrodes in a scan writing period in which the scan signals are supplied to the TFTs by at least the row control circuit in the display driver portion to drive the TFTs.

Display device fitted with position input function

A touch panel-equipped display device includes at least: a display control unit to supply a scan signal and a data signal to a display control element; and a touch position detection control unit to supply a drive signal to a drive electrode, and to detect a position detection signal from a detection electrode to detect a touch position. The display control unit supplies the data signal sequentially to a plurality of display control elements connected respectively to a plurality of pixel electrodes constituting one display pixel. The touch position detection control unit starts supplying the drive signal, in a period that is within a scan write period during which the scan signal is supplied to the display control element and is other than a period during which the data signal is supplied to the display control element corresponding to a color highest in luminosity of a plurality of colors.

Growing community of inventors

Sakai, Japan

Takenori Maruyama