公开(公告)号：US10198106B2

公开(公告)日：2019-02-05

申请号：US15686707

申请日：2017-08-25

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044 ,  G06F3/046 ,  H03K17/96

Abstract: Provided is an input detection device capable of suppressing a change in detection sensitivity depending on a position. The input detection device includes: signal wirings having end portions, and arranged so as to extend in a first direction; drive electrodes each extending in a second direction crossing the first direction, and arranged in parallel to the first direction; a plurality of first switches arranged between the end portions of the drive electrodes and the signal wirings; a drive signal circuit supplying a drive signal to the end portions; and a selection circuit controlling the first switches in detecting proximity of an external object. When the proximity of the external object is detected based on a magnetic field from the external object, the number of the first switches electrically connecting the drive electrodes close to the end portions to the signal wirings is smaller than the number of the first switches electrically connecting the drive electrodes away from the end portions to the signal wirings.

公开(公告)号：US20180061345A1

公开(公告)日：2018-03-01

申请号：US15804052

申请日：2017-11-06

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

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

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：US09715295B2

公开(公告)日：2017-07-25

申请号：US14708761

申请日：2015-05-11

Applicant: Japan Display Inc.

Inventor： Hiroshi Mizuhashi ,  Tadayoshi Katsuta ,  Gen Koide ,  Toshiaki Fukushima

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

CPC classification number: G06F3/0412 ,  G06F3/044 ,  G09G3/3648 ,  G09G3/3685 ,  G09G2300/023 ,  G09G2300/0426 ,  G09G2300/0876 ,  G09G2310/0297 ,  G09G2310/08

Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.

公开(公告)号：US20160118008A1

公开(公告)日：2016-04-28

申请号：US14989649

申请日：2016-01-06

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: 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.

Abstract translation: 根据一个方面，一种显示装置包括：多个像素排列成矩阵的显示区域; 多个信号线，其在所述显示区域中沿第二方向延伸; 垂直驱动电路，其耦合到扫描线的第一端，并向第一端施加垂直扫描脉冲，以选择显示区域中的每一行像素; 水平驱动电路，其通过信号线执行向由垂直驱动电路选择的行中的每个像素提供图像信号的显示操作; 以及分别耦合到扫描线的第二端的多个开关。 每个开关提供与通过垂直驱动电路提供给第一端的电位相同的电位到与空闲时段相对应的第二端。

公开(公告)号：US20160054855A1

公开(公告)日：2016-02-25

申请号：US14931211

申请日：2015-11-03

Applicant: Japan Display Inc.

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

IPC: G06F3/041 ,  G06F3/044

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：US09251747B2

公开(公告)日：2016-02-02

申请号：US14179903

申请日：2014-02-13

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Hiroshi Mizuhashi

IPC: G09G3/36

Abstract: According to an aspect, a display device includes: a plurality of pixels aligned in row and column directions, each of the pixels including a drive element; a plurality of scan lines each coupled with the drive elements included in the pixels aligned in the row direction to transmit thereto a scan signal for selecting the pixels row by row; a plurality of signal lines each coupled with the drive elements included in the pixels aligned in the column direction to write display data; and a display control unit. The display control unit alternately repeats a display period and a stop period. In a latter term of the stop period, display control unit provides the display data written in the respective pixels in a row that has been selected during the display period immediately before the stop period, to the signal lines corresponding to the respective pixels.

公开(公告)号：US12027544B2

公开(公告)日：2024-07-02

申请号：US18197229

申请日：2023-05-15

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: H01L27/146 ,  G06V40/13

CPC classification number: H01L27/14612 ,  G06V40/1318 ,  H01L27/14643

Abstract: A detection device includes a sensor area in which a plurality of detection elements each comprising a photoelectric conversion element are arranged in a detection region, a drive circuit configured to supply a plurality of drive signals to the detection elements, and a detection circuit configured to process a detection signal output from each of the detection elements.

公开(公告)号：US11893176B2

公开(公告)日：2024-02-06

申请号：US17960368

申请日：2022-10-05

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta ,  Hiroshi Mizuhashi

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

CPC classification number: G06F3/0412 ,  G06F3/044 ,  G06F3/0416 ,  G06F3/0445 ,  G06F3/0446 ,  G06F3/04166 ,  G02F1/13338

Abstract: A display device with is touch detection function is provided and includes display area where electrodes are arranged in matrix having first and second directions crossing above substrate; common electrodes provided so as to face pixel electrodes; pixel signal lines each coupled to pixel electrodes, extending in first direction; control device for performing image display control and including drive signal generator and source driver; single first wire to which both display drive voltage and touch drive signal are supplied from drive signal generator, and selection switches for selecting common electrodes, wherein the drive signal generator includes first and second voltage generators for generating first and second voltages, and switching circuit for switching between first and second voltages, and wherein selection switches each coupled to single first wire via first coupling conductor and coupled to common electrode via second coupling conductor are arranged in frame area along single first wire, and are overlapped by single first wire that is supplied with display drive voltage from drive signal generator and that is supplied with touch drive signal from drive signal generator.

公开(公告)号：US11837014B2

公开(公告)日：2023-12-05

申请号：US17725766

申请日：2022-04-21

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: G06V40/13

CPC classification number: G06V40/1318 ,  G06V40/1329

Abstract: A detection device includes: a sensor in which detection elements each including a photoelectric conversion element are arranged in a detection region; a drive circuit configured to supply drive signals to the detection elements; and a detection circuit configured to process a detection signal output from each detection element. Each detection element includes: a source follower transistor configured to output a signal corresponding to an electric charge generated in the photoelectric conversion element; and a read transistor configured to read an output signal of the source follower transistor and output the detection signal. A potential obtained by superimposing a threshold voltage of the source follower transistor and a voltage drop caused by on-resistance of the read transistor on a reset potential serving as a reference value for a voltage variation amount of the detection signal is set as an initial value of a potential applied to the photoelectric conversion element.

公开(公告)号：US11695026B2

公开(公告)日：2023-07-04

申请号：US17741600

申请日：2022-05-11

Applicant: Japan Display Inc.

Inventor： Tadayoshi Katsuta

IPC: H01L27/146 ,  G06V40/13

CPC classification number: H01L27/14612 ,  G06V40/1318 ,  H01L27/14643

Abstract: A detection device includes a sensor area in which a plurality of detection elements each comprising a photoelectric conversion element are arranged in a detection region, a drive circuit configured to supply a plurality of drive signals to the detection elements, and a detection circuit configured to process a detection signal output from each of the detection elements.