公开(公告)号：US11726361B2

公开(公告)日：2023-08-15

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 ,  G06F3/044 ,  G06F3/041

CPC classification number: G02F1/13338 ,  G06F3/0444 ,  G06F3/0446 ,  G06F3/04164

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.

公开(公告)号：US20220334438A1

公开(公告)日：2022-10-20

申请号：US17715085

申请日：2022-04-07

Applicant: Sharp Display Technology Corporation

Inventor： Koji Murata ,  Kosuke Nagata ,  Kazutoshi Kida ,  Kazutaka Hanaoka ,  Shinji Shimada ,  Yasuhiro Haseba

IPC: G02F1/1343 ,  G02F1/1362 ,  G02F1/1333 ,  G02F1/13 ,  G06F3/041

Abstract: The liquid crystal display device includes a liquid crystal panel, the liquid crystal panel including sub-pixels and including an active matrix substrate and a counter substrate, the active matrix substrate including a gate line, a first electrode, and a second electrode, the counter substrate including a third electrode, each of the sub-pixels being provided with an optical opening, the third electrode including a linear electrode extending along the gate line, a distance between the linear electrode and the optical opening being less than D/4 and a width of the linear electrode being D/4 or less, wherein a distance between two optical openings adjacent in the direction perpendicular to the extending direction of the gate line is defined as D.

公开(公告)号：US11698556B2

公开(公告)日：2023-07-11

申请号：US17715085

申请日：2022-04-07

Applicant: Sharp Display Technology Corporation

Inventor： Koji Murata ,  Kosuke Nagata ,  Kazutoshi Kida ,  Kazutaka Hanaoka ,  Shinji Shimada ,  Yasuhiro Haseba

IPC: G02F1/1343 ,  G02F1/1362 ,  G02F1/13 ,  G02F1/1333 ,  G06F3/041 ,  G06F3/044

CPC classification number: G02F1/134372 ,  G02F1/1323 ,  G02F1/13338 ,  G02F1/133345 ,  G02F1/134336 ,  G02F1/134345 ,  G02F1/136286 ,  G06F3/0412 ,  G06F3/0446

Abstract: The liquid crystal display device includes a liquid crystal panel, the liquid crystal panel including sub-pixels and including an active matrix substrate and a counter substrate, the active matrix substrate including a gate line, a first electrode, and a second electrode, the counter substrate including a third electrode, each of the sub-pixels being provided with an optical opening, the third electrode including a linear electrode extending along the gate line, a distance between the linear electrode and the optical opening being less than D/4 and a width of the linear electrode being D/4 or less, wherein a distance between two optical openings adjacent in the direction perpendicular to the extending direction of the gate line is defined as D.