公开(公告)号：US11526223B2

公开(公告)日：2022-12-13

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：US11307698B2

公开(公告)日：2022-04-19

申请号：US17116530

申请日：2020-12-09

Applicant: LG Display Co., Ltd.

Inventor： Youngwoo Jo ,  HyeongWon Kang

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

Abstract: Embodiments of the present disclosure relate to touch display devices, driving circuits, and driving methods, and more specifically, to a touch display device, a driving circuit, and a driving method for enabling the functionality of a micro control unit to be minimized and power consumption to be reduced by allowing one or more combined integrated circuits to generate a touch sensing control signal and provide the generated signal to a plurality of combined integrated circuits. Further, according to embodiments of the present disclosure, touch display devices, driving circuits, and driving methods are provided for enabling power consumption of a touch power integrated circuit to be reduced by using a touch sensing control signal generated by one or more combined integrated circuits as a load-free driving signal.

公开(公告)号：US11079876B2

公开(公告)日：2021-08-03

申请号：US17115558

申请日：2020-12-08

Applicant: LG Display Co., Ltd.

Inventor： Jaehun Jun ,  HyeongWon Kang ,  MyungHo Shin

IPC: G06F3/041 ,  G09G3/20 ,  G06F3/044

Abstract: Embodiments of the present disclosure relate to a touch display device, a touch driving circuit, and a touch driving method, and more specifically, to a touch display device, a touch driving circuit, and a touch driving method for enabling a signal-to-noise ratio (SNR) and sensitivity of touch sensing to be improved by implementing a code division sensing effect for the self-capacitance sensing scheme.

公开(公告)号：US11003299B2

公开(公告)日：2021-05-11

申请号：US16693002

申请日：2019-11-22

Applicant: LG DISPLAY CO., LTD.

Inventor： HyeongWon Kang ,  HongJu Lee

IPC: G06F3/044 ,  G06F3/041

Abstract: A touchscreen driver circuit and a touch sensor display device are discussed. The touch sensor display device and the touch sensing method can improve touch sensitivity and improve touch sensitivity and the uniformity of a touch sensing signal while reducing the size of a circuit area.

公开(公告)号：US20200210007A1

公开(公告)日：2020-07-02

申请号：US16719006

申请日：2019-12-18

Applicant: LG DISPLAY CO., LTD.

Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

IPC: G06F3/041 ,  G06F3/047 ,  G09G3/36 ,  G02F1/1362 ,  G02F1/1333

Abstract: A touch display device, a common driving circuit, and a driving method are discussed. The touch display device can include a common driving circuit configured to drive a plurality of common electrodes used for display driving and touch driving, wherein the common driving circuit can include a common signal stabilization amplifier configured to control the average of a first input signal and a second input signal, which are respectively received from a first common electrode and a second common electrode, to correspond to a reference common signal and to output a first control input signal and a second control input signal; and a differential amplifier configured to output a differential sensing signal that is proportional to the difference between the first control input signal and the second control input signal. Accordingly, the impact of display driving and touch driving on each other when simultaneously performing the display driving and the touch driving can be reduced.