公开(公告)号：US11467649B2

公开(公告)日：2022-10-11

申请号：US17357914

申请日：2021-06-24

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Youngmin Park ,  Deog-kyoon Jeong ,  Kyungyoul Min ,  Jiheon Park ,  Jonghyun Oh ,  Moonsang Hwang ,  Young-Ha Hwang

IPC: G06F3/045 ,  G06F1/3234 ,  G06F3/041 ,  G06F3/044

Abstract: A display apparatus including a display panel, a touch sensing unit including first and second transmission touch lines, and a touch driving circuit to apply first and second touch driving signals to the first and second transmission touch lines, respectively, in which the touch driving circuit includes a first switch group including a first sharing switch device having one end connected to the first transmission touch line, and a second switch group including a second sharing switch device having two ends respectively connected to the second transmission touch line and another end of the first sharing switch device, and the touch driving circuit is configured to turn on the sharing switch devices during a first period such that the touch driving signals have a first voltage level, and turn on the sharing switch devices during a second period such that the touch driving signals have a second voltage level.

公开(公告)号：US20200012375A1

公开(公告)日：2020-01-09

申请号：US16503741

申请日：2019-07-05

Applicant: Samsung Display CO., LTD.

Inventor： Deog-Kyoon Jeong ,  Youngmin Park ,  Sangjine Park ,  Jiheon Park ,  Jonghyun Oh ,  Sanghune Park

IPC: G06F3/041

Abstract: A display apparatus includes a display panel, a touch sensing unit, and a touch driving circuit. The touch sensing unit includes a transmission touch line. The touch driving circuit provides a touch driving signal to the transmission touch line. The touch driving circuit may include a switch group and a control switch group. The switch group may include a plurality of switch devices, each of which has one end connected to the transmission touch line. The control switch group may be connected to the other end of at least a portion of the switch devices, include a plurality of control switch devices and a capacitor device, and receive a driving voltage and a ground voltage. The touch driving signal has N voltage levels, where N is a natural number of 3 or more.

公开(公告)号：US11073895B2

公开(公告)日：2021-07-27

申请号：US16058970

申请日：2018-08-08

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Youngmin Park ,  Deog-kyoon Jeong ,  Kyungyoul Min ,  Jiheon Park ,  Jonghyun Oh ,  Moonsang Hwang ,  Young-Ha Hwang

IPC: G06F3/045 ,  G06F1/3234 ,  G06F3/041 ,  G06F3/044

Abstract: A display apparatus includes a display panel; a touch sensing unit (TSU) on the display panel and including first and second transmission touch lines (TTL); and a touch driving circuit (TDC). The TDC applies first and second touch driving signals (TDS) to the first and second TTL, respectively. The TDC includes first and second sharing switch devices (SSD) respectively connected to the first and second TTL. The first and second SSD are connected to each other. The first TDS has a first voltage level during a first period, and the second TDS has a second voltage level different than the first voltage level during the first period. The TDC is configured to turn on the first and second SSD during a second period after the first period such that the first and second TDSs have a voltage level between the first voltage level and the second voltage level.

公开(公告)号：US20210318744A1

公开(公告)日：2021-10-14

申请号：US17357914

申请日：2021-06-24

Applicant: Samsung Display Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Youngmin Park ,  Deog-kyoon Jeong ,  Kyungyoul Min ,  Jiheon Park ,  Jonghyun Oh ,  Moonsang Hwang ,  Young-Ha Hwang

IPC: G06F1/3234 ,  G06F3/041 ,  G06F3/044

Abstract: A display apparatus including a display panel, a touch sensing unit including first and second transmission touch lines, and a touch driving circuit to apply first and second touch driving signals to the first and second transmission touch lines, respectively, in which the touch driving circuit includes a first switch group including a first sharing switch device having one end connected to the first transmission touch line, and a second switch group including a second sharing switch device having two ends respectively connected to the second transmission touch line and another end of the first sharing switch device, and the touch driving circuit is configured to turn on the sharing switch devices during a first period such that the touch driving signals have a first voltage level, and turn on the sharing switch devices during a second period such that the touch driving signals have a second voltage level.

公开(公告)号：US10942597B2

公开(公告)日：2021-03-09

申请号：US16503741

申请日：2019-07-05

Applicant: SAMSUNG DISPLAY CO., LTD. ,  SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Inventor： Deog-Kyoon Jeong ,  Youngmin Park ,  Sangjin Pak ,  Jiheon Park ,  Jonghyun Oh ,  Sanghun Park

IPC: G06F3/041

Abstract: A display apparatus includes a display panel, a touch sensing unit, and a touch driving circuit. The touch sensing unit includes a transmission touch line. The touch driving circuit provides a touch driving signal to the transmission touch line. The touch driving circuit may include a switch group and a control switch group. The switch group may include a plurality of switch devices, each of which has one end connected to the transmission touch line. The control switch group may be connected to the other end of at least a portion of the switch devices, include a plurality of control switch devices and a capacitor device, and receive a driving voltage and a ground voltage. The touch driving signal has N voltage levels, where N is a natural number of 3 or more.