公开(公告)号：US10680586B2

公开(公告)日：2020-06-09

申请号：US16208761

申请日：2018-12-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: H03K3/013 ,  H03L7/08 ,  H03L7/107 ,  G09G3/3225 ,  G09G3/36 ,  G06F3/041 ,  G06F1/08 ,  G09G3/20 ,  G06F3/044 ,  G09G5/00

Abstract: A spread spectrum clock generation apparatus includes a frequency modulator configured to generate an output clock signal, a frequency of which is variable with reference to a predetermined center frequency, by frequency-modulating an input clock signal according to a modulation profile signal; and a profile generator configured to generate a nested-modulation profile for controlling the frequency of the output clock signal, generate the modulation profile signal according to the nested-modulation profile, and output the modulation profile signal to the frequency modulator, wherein the profile generator is further configured to generate the nested-modulation profile by varying a cycle and a change range of a triangle modulation profile having a triangle waveform pattern having a pre-designated cycle and a pre-designated amplitude with reference to the center frequency in a time-frequency domain.

公开(公告)号：US11650682B2

公开(公告)日：2023-05-16

申请号：US17115229

申请日：2020-12-08

Applicant: LG DISPLAY CO., LTD.

Inventor： HyeongWon Kang ,  Jaehun Jun

IPC: G06F3/041 ,  H01L27/32 ,  G06F3/044 ,  G09G3/3275

CPC classification number: G06F3/0412 ,  G06F3/044 ,  G09G3/3275 ,  H01L27/3272 ,  H01L27/3276

Abstract: Embodiments of the present disclosure relate to a touch display device, a data driving circuit, and a touch sensing method. By sensing multiple data lines simultaneously using gate signals for display as touch driving pulses, it is possible to provide touch sensing without having a separate touch electrode for touch sensing and touch driving pulses. The touch sensing method includes outputting gate signals sequentially having a pulse section including two or more pulses to gate lines, by a gate driving circuit; outputting an image data voltage to data lines, by a source driving circuit; sensing the data lines by combining every N (N is a natural number of 2 or more) data lines or sensing a plurality of reference voltage lines by combining every N reference voltage lines, by a sensing circuit; and determining a touch or a touch coordinate, based on sensing values obtained by sensing of the sensing circuit.

公开(公告)号：US11550438B2

公开(公告)日：2023-01-10

申请号：US17368339

申请日：2021-07-06

Applicant: LG Display Co., Ltd.

Inventor： Hyunwoo Kim ,  Jaehun Jun ,  Sojung Jung

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/046 ,  G06F3/0354

Abstract: The present disclosure relates to a touch display device, a method of driving the touch display device, a touch driving circuit, and a touch controller, for sensing a touch using a touch driving signal whose frequency is changed in sync with a touch driving timing. According to the embodiments of the present disclosure, it is possible to have a high signal-to-noise ratio as well as improved immunity to the EMI, and acquire improved touch sensitivity.

公开(公告)号：US10198124B2

公开(公告)日：2019-02-05

申请号：US15393166

申请日：2016-12-28

Applicant: LG Display Co., Ltd.

Inventor： Dukhyo Lee ,  Jaehun Jun ,  Hyeongwon Kang ,  Beomjin Kim

IPC: G06F3/041 ,  G06F3/044

Abstract: Disclosed herein are a method and circuit for driving touch sensors and a display device using the same. A method of driving touch sensors includes supplying a touch sensor driving signal to the touch sensors or an amplifier and sensing a touch input during a touch input sensing portion and measuring current noise received through the touch sensors without the touch sensor driving signal during a noise measurement portion.

公开(公告)号：US09904404B2

公开(公告)日：2018-02-27

申请号：US14875502

申请日：2015-10-05

Applicant: LG Display Co., Ltd.

Inventor： Hyeongwon Kang ,  Jaehun Jun ,  Dukhyo Lee ,  Beomjin Kim

IPC: G06F3/041 ,  G06F3/044 ,  G06F1/32

CPC classification number: G06F3/0416 ,  G06F1/3262 ,  G06F1/3265 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04112 ,  Y02D10/153

Abstract: A display device that comprises a plurality of touch electrodes and a touchscreen driving circuit coupled to the plurality of touch electrodes. In a normal display mode of the display device, the touchscreen driving circuit senses touch via the plurality of touch electrodes using self capacitance touch sensing. In a sleep mode of the display device, the touchscreen driving circuit senses touch via the plurality of touch electrodes using mutual capacitance touch sensing.

公开(公告)号：US12029066B2

公开(公告)日：2024-07-02

申请号：US17470450

申请日：2021-09-09

Applicant: LG Display Co., Ltd.

Inventor： Bongchoon Kwak ,  UnSang Yu ,  Jaehun Jun

IPC: H10K50/856 ,  G09G3/3233 ,  H10K59/122 ,  H10K59/131 ,  H10K59/38

CPC classification number: H10K50/856 ,  H10K59/122 ,  H10K59/131 ,  H10K59/38 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0809

Abstract: An electroluminescent display device comprises first to third subpixels each of which including a contact area and a light emission area, each subpixel provided with a first electrode, the first electrode extending from the light emission area to the contact area of each of the first to third subpixels; a first reflective layer provided in the light emission area of the first subpixel and electrically insulated from the first electrode of the first subpixel; a second reflective layer provided at least in the light emission area of the second subpixel; and a third reflective layer provided at least in the light emission area of the third subpixel.

公开(公告)号：US11372493B2

公开(公告)日：2022-06-28

申请号：US17113601

申请日：2020-12-07

Applicant: LG DISPLAY CO., LTD.

Inventor： Jaehun Jun

IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044 ,  G06V40/60 ,  G06V40/13 ,  G06V40/12

Abstract: Provided is a touch display device that can sense a touch input of a finger with the touch display device, recognize a finger touch position, specify a fingerprint sensing area, and sense a fingerprint in the fingerprint sensing area. Provided is also a touch display device that does not need a particularly fingerprint sensing line by performing fingerprint sensing using data lines of the touch display device and that can sense a fingerprint without decreasing a fingerprint sensing performance by minimizing a parasitic capacitance which can be generated in data lines, gate lines, touch electrodes, or the like at the time of sensing a fingerprint.

公开(公告)号：US10908719B2

公开(公告)日：2021-02-02

申请号：US16195725

申请日：2018-11-19

Applicant: LG Display Co., Ltd.

Inventor： Jaehun Jun ,  Hyunkyu Park

IPC: G06F3/041 ,  G06F3/044

Abstract: Disclosed are a touch display device, a touch driving circuit, and a touch driving method. A touch display device, a touch driving circuit, and a touch driving method is capable of supplying touch driving signals having different signal characteristics (e.g., driving frequencies) to touch electrodes or sensing groups by considering such touch electrode-specific or sensing group-specific difference. By this configuration, without reducing touch sensitivity, the touch sensing time required to sense all of the touch electrodes can be reduced, and a display driving time can be significantly lengthened, making it possible to implement a display requiring a large screen and high-resolution.

公开(公告)号：US10891899B2

公开(公告)日：2021-01-12

申请号：US16051196

申请日：2018-07-31

Applicant: LG Display Co., Ltd.

Inventor： Jaehun Jun

IPC: G06F1/00 ,  G09G3/3258 ,  H01L29/786 ,  G09G3/3233 ,  G09G3/3225 ,  G09G3/00 ,  H01L27/32 ,  H01L51/52

Abstract: Embodiments disclosed herein relate to a display device, an electronic device, and a body-biasing circuit, and more particularly, to a display device, an electronic device, and a body biasing circuit, in which even if a common voltage is fluctuated due to noise, image quality degradation due to the fluctuation of the common voltage can be prevented through a body-biasing technique that applies a body voltage corresponding to the common voltage to a body of a driving transistor in a sub-pixel.

公开(公告)号：US09569035B1

公开(公告)日：2017-02-14

申请号：US14981313

申请日：2015-12-28

Applicant: LG Display Co., Ltd.

Inventor： Dukhyo Lee ,  Jaehun Jun ,  Hyeongwon Kang ,  Beomjin Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: Disclosed herein are a method and circuit for driving touch sensors and a display device using the same. A method of driving touch sensors includes supplying a touch sensor driving signal to the touch sensors or an amplifier and sensing a touch input during a touch input sensing portion and measuring current noise received through the touch sensors without the touch sensor driving signal during a noise measurement portion.

Abstract translation: 这里公开了用于驱动触摸传感器的方法和电路以及使用其的显示装置。 驱动触摸传感器的方法包括将触摸传感器驱动信号提供给触摸传感器或放大器，并且在触摸输入感测部分期间感测触摸输入，并且在噪声测量期间测量通过触摸传感器接收的电流噪声而不用触摸传感器驱动信号 一部分。