公开(公告)号：US20230273697A1

公开(公告)日：2023-08-31

申请号：US18095241

申请日：2023-01-10

Applicant: Sharp Display Technology Corporation

Inventor： Jin MIYAZAWA ,  Noriyuki TANAKA ,  Daiji KITAGAWA ,  Tatsuhiko SUYAMA ,  Yousuke NAKAMURA ,  Daisuke SUEHIRO

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/044

Abstract: A display device includes: a display panel including a sensor unit configured to detect a touch operation; a first control unit configured to supply a first signal to the display panel; and a second control unit configured to calculate touch information related to the touch operation and to supply the touch information to the first control unit. The first control unit includes: a signal generator configured to generate the first signal based on an image signal supplied from an external image signal supply source; and an overdrive circuit configured to perform a process of increasing an amplitude of the first signal generated by the signal generator. The overdrive circuit is actuated based on the touch information from the second control unit. The first control unit, in response to the actuation of the overdrive circuit, supplies the first signal having the amplitude increased by the overdrive circuit to the display panel.

公开(公告)号：US20220291802A1

公开(公告)日：2022-09-15

申请号：US17690075

申请日：2022-03-09

Applicant: Sharp Display Technology Corporation

Inventor： Yousuke NAKAMURA ,  Daiji KITAGAWA ,  Jin MIYAZAWA ,  Daisuke SUEHIRO

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

Abstract: A display device includes a touch panel, a panel control unit, and a storage unit configured to store an image signal. The panel control unit provides control to perform a touch detection operation and a write operation in an alternating manner in an image input period and to perform at least the touch detection operation at regular intervals in a suspension period. When an image input period starts, the panel control unit provides control to perform the write operation after an ongoing or subsequent touch detection operation finishes.

公开(公告)号：US20240211066A1

公开(公告)日：2024-06-27

申请号：US18514531

申请日：2023-11-20

Applicant: Sharp Display Technology Corporation

Inventor： Daiji KITAGAWA ,  Jin Miyazawa ,  Yousuke Nakamura ,  Daisuke Suehiro

IPC: G06F3/041

CPC classification number: G06F3/0416

Abstract: A display device with a touch panel includes a touch panel including a pixel electrode, and a control unit executing a write process of writing a data signal on the pixel electrode and a touch detection process by the touch panel. The control unit determines an executable number of times of the touch detection process based on the length of the pause period, alternately executes the touch detection process and the write process in the display period, and executes the touch detection process a number of times equal to or less than the determined executable number of times in the pause period.

公开(公告)号：US20230333679A1

公开(公告)日：2023-10-19

申请号：US18135041

申请日：2023-04-14

Applicant: Sharp Display Technology Corporation

Inventor： Daisuke SUEHIRO ,  Daiji KITAGAWA ,  Noriyuki TANAKA ,  Tatsuhiko SUYAMA ,  Jin MIYAZAWA ,  Yousuke NAKAMURA

IPC: G06F3/041 ,  G09G3/36

CPC classification number: G06F3/0412 ,  G06F3/04164 ,  G09G3/3655

Abstract: A touch panel display driver includes a source driver circuit, a touch detection circuit, a selector circuit, a register a plurality of source terminals, a plurality of touch detection terminals, and a plurality of selection terminals. The selector circuit electrically connects the source driver circuit to each of the source terminals, electrically connects the touch detection circuit to each of the touch detection terminals, and electrically connects each of the selection terminals to the source driver circuit or the touch detection circuit.

公开(公告)号：US20230060098A1

公开(公告)日：2023-02-23

申请号：US17886521

申请日：2022-08-12

Applicant: Sharp Display Technology Corporation

Inventor： Kosuke NAGATA ,  Kazutoshi KIDA ,  Daiji KITAGAWA

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

Abstract: An in-cell touch panel includes a mode switching control circuit and a counter substrate electrode control circuit. The mode switching control circuit switches, in a time-division manner, the operation mode of the in-cell touch panel between a display mode in which a display signal is supplied by a display control circuit to pixel electrodes, and a touch detection mode in which a driving signal is supplied by a driving control circuit to touch sensor electrodes. The counter substrate electrode control circuit supplies a counter substrate electrode with a signal that is in synchronization with the driving signal and that has the same polarity as that of the driving signal in a period while the in-cell touch panel is in the touch detection mode, or causes the potential of the counter substrate electrode to be in a floating state in a period while the in-cell touch panel is in the touch detection mode.