公开(公告)号：US20180150168A1

公开(公告)日：2018-05-31

申请号：US15824095

申请日：2017-11-28

Applicant: LG DISPLAY CO., LTD.

Inventor： Sojung JUNG

IPC: G06F3/041 ,  H03M1/12

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  H03M1/12

Abstract: Embodiments relate to a touch sensing circuit, a touch display device, and a touch sensing method. The touch sensing circuit may comprise a touch sensing process configured to output a touch driving signal during a touch sensing period to at least two touch electrodes, and to convert a touch sensing signal detected through each touch electrode, to which the touch driving signal is applied, during an analog-to-digital conversion period, into a digital sensing value, and a communication processor configured to transmit sensing data including the digital sensing value converted during the analog-to-digital conversion period to a touch controller, wherein the communication processor starts transmission of the sensing data including converted digital sensing values of at least some of touch sensing signals before each of touch sensing signals detected from the at least two touch electrodes are converted into a digital sensing value. The present invention enables quick touch sensing. In addition, noise generated in the touch information detection process can be reduced and the signal-to-noise ratio can be improved so that the touch sensitivity can be improved.

公开(公告)号：US20230178029A1

公开(公告)日：2023-06-08

申请号：US17963444

申请日：2022-10-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyungjin JANG ,  HyeonSik KIM ,  UnSang YU ,  Kwangdug CHOI ,  JinBong CHUNG ,  Sunkyung SHIN ,  Sojung JUNG ,  Beom-Jin KIM ,  Bongchoon Kwak

IPC: G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0297 ,  G09G2340/0435 ,  G09G2354/00

Abstract: A display panel sets a focus area per frame, based on focus area setting information and focus area reference line information received from the outside, control the number of gate lines simultaneously driven according to the focus area, and display a rendered image per focus area, thereby preventing the quality degradation of the image perceived by the user and increasing the frame rate of the display panel, and enhancing the quality of the virtual reality experience provided by the virtual reality device.

公开(公告)号：US20190197930A1

公开(公告)日：2019-06-27

申请号：US16224324

申请日：2018-12-18

Applicant: LG Display Co., Ltd.

Inventor： Beom-Jin KIM ,  Sunkyung SHIN ,  Bongchoon KWAK ,  Sojung JUNG

IPC: G09G3/00 ,  G09G3/3266 ,  G09G3/3275

Abstract: The embodiments of the present disclosure relate to a display device, a test circuit, and a test method thereof. More specifically, a display device may include a silicon substrate having a plurality of gate lines, a plurality of data lines, a plurality of sensing lines, and a pixel array on which a plurality of subpixels are arranged; a test circuit arranged on the silicon substrate, the test circuit configured to select at least one line of the plurality of data lines or the plurality of sensing lines, to convert a signal transmitted through the selected line into a digital signal, and to output test data; and a test pad unit configured to output the test data to a circuit outside the silicon substrate.

公开(公告)号：US20220187977A1

公开(公告)日：2022-06-16

申请号：US17507465

申请日：2021-10-21

Applicant: LG DISPLAY CO., LTD.

Inventor： Sojung JUNG

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display device may include a touch panel configured to be time-divisionally driven in touch sensing and display periods by a synchronization signal and including touch electrodes, and a touch driver to drive the touch panel. The touch driver may include: a touch sensing circuit to supply a touch driving signal to the touch electrodes, to receive an analog touch sensing signal from the touch electrodes, and to sample an integral value of the analog touch sensing signal to output a digital sensing data; a touch control circuit to generate a pulse width modulation (PWM) signal and to receive the digital sensing data to determine a touch; and a timing control circuit to provide an output signal to the touch sensing circuit to control a sampling timing of the integral value of the analog touch sensing signal.

公开(公告)号：US20200184904A1

公开(公告)日：2020-06-11

申请号：US16702922

申请日：2019-12-04

Applicant: LG Display Co., Ltd.

Inventor： Sojung JUNG ,  Beom-Jin KIM ,  Bongchoon KWAK

IPC: G09G3/3291 ,  G02B27/01

Abstract: A micro-display device comprises a silicon substrate in which a plurality of gate lines, a plurality of data lines, a plurality of emission signal lines, and a plurality of subpixels are disposed; a gate driver circuit disposed on a first side of a pixel array to drive the plurality of gate lines; an emission driver circuit driving the plurality of emission signal lines and disposed on a second side of the pixel array different from the first side of the pixel array where the gate driver circuit is disposed; a data driver circuit disposed on a third side of the pixel array to drive the plurality of data lines; a memory storing duty data regarding duty ratios of an emission signal applied to the plurality of emission signal lines; and a control circuit controlling signals applied to the gate driver circuit, the data driver circuit and the emission driver circuit, wherein the control circuit is set to have different emission times with respect to subpixels connected to the plurality of emission signal lines according to the duty data stored in the memory.