公开(公告)号：US20210232252A1

公开(公告)日：2021-07-29

申请号：US17233182

申请日：2021-04-16

Applicant: LG Display Co., Ltd.

Inventor： JaeKyu PARK ,  HyunWoo JANG ,  HyeongWon KANG ,  SuWon LEE

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/047

Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.

公开(公告)号：US20190179484A1

公开(公告)日：2019-06-13

申请号：US16212590

申请日：2018-12-06

Applicant: LG DISPLAY CO., LTD.

Inventor： HyunWoo JANG ,  SuWon LEE

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display device includes a touch panel on which a plurality of touch electrodes is disposed; and a touch circuit configured to output a touch driving signal of a pulse type to the touch panel and to sense occurrence of touch or a touch position according to a touch synchronization signal for defining a touch period, wherein the touch circuit comprises: a touch driver configured to supply the touch driving signal to one or more of the plurality of touch electrodes to drive the touch electrodes in the touch period and to obtain sensing data by signal processing of a touch sensing signal detected from the driven touch electrodes; and a touch controller configured to receive the sensing data to sense occurrence of touch or a touch position and to determine whether the touch driver malfunctions, and to output a simplified initialization command to the touch driver when it is determined that the touch driver malfunctions, and the touch driver is initialized with a pre-stored set value maintained not changed upon receiving the simplified initialization command.

公开(公告)号：US20200233518A1

公开(公告)日：2020-07-23

申请号：US16843252

申请日：2020-04-08

Applicant: LG Display Co., Ltd.

Inventor： JaeKyu PARK ,  HyunWoo JANG ,  HyeongWon KANG ,  SuWon LEE

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044 ,  G06F3/047

Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.

公开(公告)号：US20180113549A1

公开(公告)日：2018-04-26

申请号：US15793262

申请日：2017-10-25

Applicant: LG Display Co., Ltd.

Inventor： JaeKyu PARK ,  HyunWoo JANG ,  HyeongWon KANG ,  SuWon LEE

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044 ,  G06F3/047

CPC classification number: G06F3/0412 ,  G06F3/03545 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/047

Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.

公开(公告)号：US20180107292A1

公开(公告)日：2018-04-19

申请号：US15782738

申请日：2017-10-12

Applicant: LG Display Co., Ltd.

Inventor： HyunWoo JANG ,  SuWon LEE

IPC: G06F3/0354 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/03545 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: The present disclosure provides a touch display device and a touch driving circuit which support touch sensing of an active pen, and a method of driving the same. Sensing data acquired during a first sensing time period in a pen position sensing section may be transmitted as one data packet, and a plurality of pieces of sensing data acquired during a second sensing time period shorter than the first sensing time period in a pen data sensing section may be transmitted as one data packet, so that it is possible to reduce an unnecessary sensing time period when pen data is sensed, while preventing sensing data transmission sections from overlapping each other. In addition, information about a Most Significant Bit (MSB) of the sensing data to be transmitted when the sensing data is transmitted may be transmitted in the pen data sensing section, so that it is possible to easily restore the sensing data while minimizing a loss of the sensing data.