公开(公告)号：US20230384885A1

公开(公告)日：2023-11-30

申请号：US18196495

申请日：2023-05-12

Applicant: LG DISPLAY CO., LTD.

Inventor： Beom-Jin KIM ,  HyeongWon KANG

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04164 ,  G06F3/044 ,  G06F3/0418 ,  G06F3/0412

Abstract: An analog front end for a touch display device operates each of two or more charge removers through a simplified wiring structure by providing an analog front end including a charge remover including a switched-capacitor array that discharges electric charge of a first input terminal of an operational amplifier and a control signal latching circuit that latches a received serial signal according to a generated pulse to generate and output an individual control signal of the switched-capacitor array.

公开(公告)号：US20240105125A1

公开(公告)日：2024-03-28

申请号：US18361741

申请日：2023-07-28

Applicant: LG Display Co., Ltd.

Inventor： Beom-Jin KIM ,  Hyunwoo KIM ,  Bongchoon KWAK ,  HongJu LEE

IPC: G09G3/3275 ,  G09G3/3266

CPC classification number: G09G3/3275 ,  G09G3/3266 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0673

Abstract: Embodiments of the disclosure relate to a display device and a data driving circuit. Specifically, there may be provided a display device comprising a display panel where a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed, a gate driving circuit configured to supply scan signals to the plurality of gate lines, a data driving circuit configured to convert digital image data into an analog data voltage and supply the analog data voltage to the plurality of data lines, a timing controller configured to control the gate driving circuit and the data driving circuit, a first gamma circuit generating a first gamma voltage corresponding to a first pixel during a period corresponding to a first color selection signal, and a second gamma circuit generating a second gamma voltage corresponding to a second pixel during a period corresponding to a second color selection signal different from the first color selection 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.

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：US20190051253A1

公开(公告)日：2019-02-14

申请号：US16047730

申请日：2018-07-27

Applicant: LG DISPLAY CO., LTD.

Inventor： SunKyung SHIN ,  Beom-Jin KIM

IPC: G09G3/3291 ,  H01L51/52 ,  G09G3/3233 ,  H01L27/32 ,  G06F3/01

Abstract: A display device and a method of controlling the display device are discussed. The display device includes a first display configured to display a first line at a first time and configured to display a second line at a second time at a position spaced a predetermined distance apart from the position at which the first line is displayed, a second display configured to display the second line at the first time and configured to display the first line at the second time, a first driver IC configured to drive the first display, a second driver IC configured to drive the second display, and a controller configured to transmit, to the first driver IC, information on the first line at the first time and information on the second line at the second time and configured to supply, to the second driver IC, information on the second line at the first time and information on the first line at the second time.

公开(公告)号：US20180120991A1

公开(公告)日：2018-05-03

申请号：US15793612

申请日：2017-10-25

Applicant: LG Display Co., Ltd.

Inventor： HyeongWon KANG ,  Beom-Jin KIM ,  HongJu LEE

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

Abstract: A touch display device and a driving circuit are disclosed in which the driving circuit is included in the touch display device. The driving circuit may be capable of reducing a chip size and power consumption by configuring an amplifier disposed in an output terminal of a data voltage to be electrically coupled with a feedback capacitor through a switch, and enabling both display driving and touch sensing to be performed through ON/OFF control of the switch. Further, the accuracy and performance of touch sensing may be improved by adjusting an ON/OFF operation of a switch and the number of amplifiers electrically coupled with the feedback capacitor, and a circuit structure for touch driving may be further simplified by generating a load-free driving voltage output in a touch driving period using the amplifiers and a digital-to-analog converter within the driving circuit.