公开(公告)号：US10120521B2

公开(公告)日：2018-11-06

申请号：US15684542

申请日：2017-08-23

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/044 ,  G06F3/041

Abstract: A display device with a touch detecting function includes wiring for touch arranged in a peripheral area positioned on the outside of a display area, and a selection switch that selects one of drive electrodes to be coupled to the wiring for touch. A drive electrode scanning unit selects one of drive electrodes and includes a plurality of transfer circuits in the peripheral area. Part of the transfer circuits is a transfer circuit that performs output to the selection switch.

公开(公告)号：US10032801B2

公开(公告)日：2018-07-24

申请号：US15042826

申请日：2016-02-12

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G02F1/136 ,  H01L27/12 ,  G02F1/1335 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/1345 ,  G02F1/1362 ,  H01L29/786

Abstract: A load related to a scanning line is decreased and a load related to a common electrode is decreased without decrease in an aperture ratio of each pixel. A display apparatus has a red sub-pixel and a green sub-pixel. A distance in the Y-axis direction between a pedestal electrode and a scanning line that drives a transistor in a plan view in the red sub-pixel is longer than a distance in the Y-axis direction between a pedestal electrode and a scanning line that drives a transistor in a plan view in the green sub-pixel. Furthermore, a superposed width of a light shielding film with a red pixel region in the Y-axis direction is larger than a superposed width of the light shielding film with a green pixel region in the Y-axis direction.

公开(公告)号：US09837033B2

公开(公告)日：2017-12-05

申请号：US14989649

申请日：2016-01-06

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

CPC classification number: G09G3/3648 ,  G06F3/0418 ,  G06F3/044 ,  G09G3/3611 ,  G09G2300/0426 ,  G09G2310/08

Abstract: According to an aspect, a display device includes: a display region in which a plurality of pixels are arranged in a matrix; a plurality of signal lines that extend in a second direction in the display region; a vertical drive circuit that is coupled to first ends of the scanning lines and applies a vertical scanning pulse to the first ends to select each row of the pixels in the display region; a horizontal drive circuit that performs a display operation of supplying an image signal to each of the pixels in the row selected by the vertical drive circuit through the signal lines; and a plurality of switches that are coupled to second ends of the scanning lines respectively. Each of the switches supplies the same potential as that supplied to the first ends by the vertical drive circuit to the second end corresponding thereto in an idle period.

公开(公告)号：US20170123535A1

公开(公告)日：2017-05-04

申请号：US15403897

申请日：2017-01-11

Applicant: Japan Display Inc.

Inventor： Takeya Takeuchi ,  Hiroshi Mizuhashi ,  Tadayoshi Katsuta ,  Takehiro Shima

IPC: G06F3/044 ,  G09G3/36 ,  G06F3/041

CPC classification number: G06F3/044 ,  G02F1/13338 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/0416 ,  G06F2203/04104 ,  G06F2203/04108 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2300/0809 ,  G09G2310/0291

Abstract: A display device with a touch sensor includes: plural display pixel electrodes; a common electrode arranged opposite to the display pixel electrodes; a display function layer having an image display function; a display control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal; and a touch detection electrode provided opposite to the common electrode and forming capacitance between the touch detection electrode and the common electrode, wherein a drive voltage for display applied to the common electrode by the display control circuit is used as a drive signal for the touch sensor, and a gate potential of TFT circuits included in the display pixel electrodes is increased during a period when the drive signal for the touch sensor is applied.

公开(公告)号：US09513754B2

公开(公告)日：2016-12-06

申请号：US14546546

申请日：2014-11-18

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G06F2203/04108

Abstract: A display device with a touch detecting function includes wiring for touch arranged in a peripheral area positioned on the outside of a display area, and a selection switch that selects one of drive electrodes to be coupled to the wiring for touch. A drive electrode scanning unit selects one of drive electrodes and includes a plurality of transfer circuits in the peripheral area. Part of the transfer circuits is a transfer circuit that performs output to the selection switch.

Abstract translation: 具有触摸检测功能的显示装置包括布置在位于显示区域外部的外围区域中的触摸布线，以及选择开关，其选择要与触摸的布线耦合的驱动电极中的一个。 驱动电极扫描单元选择驱动电极中的一个并且在周边区域中包括多个传输电路。 传输电路的一部分是向选择开关输出的传输电路。

公开(公告)号：US20150205433A1

公开(公告)日：2015-07-23

申请号：US14598514

申请日：2015-01-16

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Tadayoshi Katsuta ,  Kohei Azumi ,  Daisuke Ito

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/044

Abstract: According to an aspect, a touch detection device includes drive electrodes, touch detection electrodes, a signal generation unit that generates direct-current signals having voltages different from one another, a first drive unit that selectively supplies one of the direct-current signals to the drive electrodes, an element, a second drive unit that selectively supplies one of the direct-current signals to one end of the element in synchronization with the first drive unit, and a detection unit that acquires output values from the touch detection electrodes and an output value from the element at the same time, and detects proximity or contact of a target object based on values obtained by correcting the output values from the touch detection electrodes using the output value from the element.

Abstract translation: 根据一个方面，触摸检测装置包括驱动电极，触摸检测电极，产生具有彼此不同电压的直流信号的信号产生单元，第一驱动单元，其选择性地将一个直流信号提供给 驱动电极，元件，第二驱动单元，其与第一驱动单元同步地选择性地将一个直流信号提供给元件的一端;以及检测单元，其从触摸检测电极获取输出值和输出 并且基于通过使用来自元件的输出值校正来自触摸检测电极的输出值而获得的值来检测目标对象的接近度或接触。

公开(公告)号：US12062666B2

公开(公告)日：2024-08-13

申请号：US18492319

申请日：2023-10-23

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: H01L27/12 ,  G06F3/041 ,  G06F3/044 ,  G09G3/20

CPC classification number: H01L27/124 ,  G06F3/0412 ,  G06F3/04166 ,  G06F3/044 ,  G09G3/20 ,  G09G2300/0408 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/0297

Abstract: A display device with touch detection function includes a display unit having a first and a second data lines, a first region outside the display unit, a second region on an opposite side of the first region sandwiching the display unit with the first region, a sensor unit including a sensor electrode, a first data signal supply line connected to the first data line and arranged in the first region, a second data signal supply line connected to the second data line and arranged in the second region, a dummy wiring arranged in the first region and not connected to the sensor electrode, and a sensor wiring arranged in the second region and connected to the sensor electrode. A line length of the dummy wiring in the first region is substantially same as a line length of the sensor wiring in the second region.

公开(公告)号：US11868559B2

公开(公告)日：2024-01-09

申请号：US17548807

申请日：2021-12-13

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333

CPC classification number: G06F3/04166 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/0446 ,  G06F3/04164

Abstract: A detection function-equipped display device includes: a display unit provided with pixels; drive electrodes disposed along a display surface of the display unit and arranged in a first direction; detection electrodes disposed along the display surface, arranged in a second direction, and facing the drive electrodes; a potential selection circuit that performs switching control; a scanning circuit that outputs a scanning signal; a detection circuit that performs detection of a touch on the display surface based on potentials from the detection electrodes; and a signal selection circuit that supplies, to the potential selection circuit, either a first signal corresponding to the scanning signal or a second signal from the detection circuit. The switching control includes processing of applying the drive potential to one or more of the drive electrodes based on one of the first signal and the second signal and applying the non-drive potential to the other drive electrodes.

公开(公告)号：US11830884B2

公开(公告)日：2023-11-28

申请号：US18097687

申请日：2023-01-17

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: H01L27/12 ,  G09G3/20 ,  G06F3/041 ,  G06F3/044

CPC classification number: H01L27/124 ,  G06F3/044 ,  G06F3/0412 ,  G06F3/04166 ,  G09G3/20 ,  G09G2300/0408 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/0297

Abstract: A display device with touch detection function includes a display unit having a first and a second data lines, a first region outside the display unit, a second region on an opposite side of the first region sandwiching the display unit with the first region, a sensor unit including a sensor electrode, a first data signal supply line connected to the first data line and arranged in the first region, a second data signal supply line connected to the second data line and arranged in the second region, a dummy wiring arranged in the first region and not connected to the sensor electrode, and a sensor wiring arranged in the second region and connected to the sensor electrode. A line length of the dummy wiring in the first region is substantially same as a line length of the sensor wiring in the second region.

公开(公告)号：US11385739B2

公开(公告)日：2022-07-12

申请号：US17182739

申请日：2021-02-23

Applicant: Japan Display Inc.

Inventor： Hayato Kurasawa ,  Hiroshi Mizuhashi ,  Fumitaka Gotoh ,  Gen Koide ,  Tadayoshi Katsuta

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/046

Abstract: According to an aspect, a display apparatus includes: a substrate; a plurality of pixel electrodes; a plurality of detection electrodes arranged in a matrix in a display area of the substrate; a plurality of detection electrode lines coupled to the respective detection electrodes; a plurality of first electrodes provided in the same layer as the detection electrodes or the detection electrode lines and extending in a first direction; a plurality of switching elements coupled to the respective pixel electrodes; a plurality of signal lines coupled to the switching elements and extending in a second direction crossing the first direction; a coupling member provided in a peripheral area outside the display area and configured to couple ends of the first electrodes to each other; and a drive circuit configured to output a first drive signal in a first sensing period in which an electromagnetic induction method is used.