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公开(公告)号：US10860134B2
公开(公告)日：2020-12-08
申请号：US16655824
申请日：2019-10-17
Applicant: LG Display Co., Ltd.
Inventor： Moonsoo Chung , Joohee Lee
Abstract: The display device of the present disclosure may comprise a display panel equipped with pixels each representing image data and photo sensors each outputting an electric signal through a sensing line responding to light, a data driving circuit providing a data voltage corresponding to the image data to the pixel through a data line, a gate driving circuit supplying, through a gate line, a scan signal for controlling an application of the data voltage to the pixel disposed on a horizontal line and for controlling a connection of the photo sensor disposed on a corresponding horizontal line and the sensing line, a sensing driving circuit outputting digital sensing data by summing the electric signals of two photo sensors disposed on different horizontal lines and sharing the sensing line; and a timing controller supplying control signals for controlling the data driving circuit, the gate driving circuit and the sensing driving circuit.
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公开(公告)号：US20150187308A1
公开(公告)日：2015-07-02
申请号：US14308387
申请日：2014-06-18
Applicant: LG Display Co., Ltd.
Inventor： Seunghwan Shin , Yonghwa Park , Daeseok Oh , Moonsoo Chung
IPC: G09G3/36
CPC classification number: G09G3/3614 , G09G3/2022 , G09G3/3688 , G09G2310/0218 , G09G2310/0224 , G09G2310/04 , G09G2310/08 , G09G2320/0233 , G09G2320/0247 , G09G2330/021 , G09G2340/0435
Abstract: A display device capable of driving at low speed is disclosed. Pixels connected to a first data line on odd-numbered display lines of a display panel are positioned on one side of the left and right sides of the first data line, and pixels connected to the first data line on even-numbered display lines of the display panel are positioned on the other side of the first data line based on a Z-inversion scheme. When a mode conversion control signal for switching to an interlaced low speed driving mode is input during a normal drive, in which a length of one frame is set to P, a timing controller expands a length of one frame for a low speed drive to (n×P), where n is a positive integer equal to or greater than 2 and assigns a length P to each of n sub-frames of the one frame.
Abstract translation: 公开了能够以低速行驶的显示装置。 连接到显示面板的奇数显示行上的第一数据线的像素位于第一数据线的左侧和右侧的一侧，并且连接到第一数据线上的偶数显示行上的像素 显示面板基于Z反转方案位于第一数据线的另一侧。 当在将一帧长度设置为P的正常驱动期间输入用于切换到隔行低速驱动模式的模式转换控制信号时，定时控制器将用于低速驱动的一帧的长度扩展为 n×P），其中n是等于或大于2的正整数，并且为一帧的n个子帧中的每一个分配长度P.
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公开(公告)号：US12165579B2
公开(公告)日：2024-12-10
申请号：US18485048
申请日：2023-10-11
Applicant: LG Display Co., Ltd.
Inventor： Moonsoo Chung , Wookyu Sang
IPC: G09G3/3208
Abstract: An electroluminescent display device using a variable refresh rate (VRR) mode. The occurrence of a difference in luminance at a time point of a refresh rate change is reduced, thereby preventing viewers from perceiving the change of the refresh rate.
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公开(公告)号：US20240386841A1
公开(公告)日：2024-11-21
申请号：US18787575
申请日：2024-07-29
Applicant: LG Display Co., Ltd.
Inventor： WooKyu Sang , Moonsoo Chung , Taehun Kim
Abstract: A display device includes a pixel circuit connected to a light emitting element. The pixel circuit includes a driving transistor having a gate electrode, a source electrode, and a drain electrode, and a capacitor connected with the gate electrode. The pixel circuit is driven according to a first period when a reference voltage is applied to the gate electrode, a second period when a gate-source voltage difference of the driving transistor is a threshold voltage of the driving transistor, a third period when the reference voltage is applied to the capacitor, and a voltage of the gate electrode varies due to a coupling phenomenon of the capacitor, a fourth period when a high-potential voltage higher than the reference voltage is applied to the source electrode, and a fifth period when the driving transistor is turned on to cause the light emitting element to emit light.
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公开(公告)号：US12112693B1
公开(公告)日：2024-10-08
申请号：US18224374
申请日：2023-07-20
Applicant: LG DISPLAY CO., LTD.
Inventor： Wookyu Sang , Moonsoo Chung
IPC: G09G3/32 , G09G3/3266
CPC classification number: G09G3/32 , G09G3/3266 , G09G2310/0267 , G09G2320/0233 , G09G2320/0247 , G09G2320/0271
Abstract: A display device according to the embodiment of the present disclosure includes: a display panel that includes a display area where a plurality of pixels is disposed and a non-display area disposed around the display area; a gate driver that provides a scan signal and an emission control signal to the display panel; and a controller that drives the display panel in accordance with a refresh rate. The plurality of pixels includes a light emitting element and a pixel circuit that drives the light emitting element. The pixel circuit is driven in sets including at least one refresh period and at least one hold period in low frequency driving. The controller controls dynamically the refresh rate during the at least one set when a gradation of an image changes, and simultaneously, changes and supplies a bias voltage during the at least one hold period.
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Patent Agency Ranking
公开(公告)号：US20240112625A1
公开(公告)日：2024-04-04
申请号：US18468220
申请日：2023-09-15
Applicant: LG Display Co., Ltd.
Inventor： WooKyu Sang , Moonsoo Chung , Taehun Kim
CPC classification number: G09G3/32 , H01L27/156 , H01L33/60 , G09G2300/0408 , G09G2300/0426 , G09G2300/0819 , G09G2300/0852 , G09G2300/0861 , G09G2310/0202 , G09G2310/08 , G09G2320/0233 , G09G2320/0252 , G09G2320/045
Abstract: A display device includes a pixel circuit connected to a light emitting element. The pixel circuit includes a driving transistor having a gate electrode, a source electrode, and a drain electrode, and a capacitor connected with the gate electrode. The pixel circuit is driven according to a first period when a reference voltage is applied to the gate electrode, a second period when a gate-source voltage difference of the driving transistor is a threshold voltage of the driving transistor, a third period when the reference voltage is applied to the capacitor, and a voltage of the gate electrode varies due to a coupling phenomenon of the capacitor, a fourth period when a high-potential voltage higher than the reference voltage is applied to the source electrode, and a fifth period when the driving transistor is turned on to cause the light emitting element to emit light.
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公开(公告)号：US20220101785A1
公开(公告)日：2022-03-31
申请号：US17472399
申请日：2021-09-10
Applicant: LG Display Co., Ltd.
Inventor： Moonsoo Chung , Wookyu Sang
IPC: G09G3/3208
Abstract: An electroluminescent display device using a variable refresh rate (VRR) mode. The occurrence of a difference in luminance at a time point of a refresh rate change is reduced, thereby preventing viewers from perceiving the change of the refresh rate.
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公开(公告)号：US10565940B2
公开(公告)日：2020-02-18
申请号：US15842775
申请日：2017-12-14
Applicant: LG DISPLAY CO., LTD.
Inventor： Joohee Lee , Moonsoo Chung
Abstract: Disclosed is a display device having a plurality of gate lines, a plurality of pixels connected with the plurality of gate lines and an optical sensor connected with a k-th gate line among the plurality of gate lines. A gate pulse applied to the k-th gate line includes a sensing gate pulse applied during a (k−i)-th horizontal period and a pixel driving gate pulse applied during a k-th horizontal period. The optical sensor connected with the k-th gate line outputs a sensing voltage in response to the sensing gate pulse. The pixel connected with the k-th gate line is applied with a data voltage in response to the pixel driving gate pulse.
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公开(公告)号：US20200051499A1
公开(公告)日：2020-02-13
申请号：US16522497
申请日：2019-07-25
Applicant: LG Display Co., Ltd.
Inventor： Moonsoo Chung , Joohee LEE
IPC: G09G3/3233 , G09G3/3275 , G09G3/3266 , G09G5/377
Abstract: The display device according to the present disclosure may comprise a display panel equipped with a plurality of pixels and a plurality of photo sensors, a data driving circuit, a gate driving circuit, and a timing controller. The source drive IC included in the data driving circuit may comprise a DAC, one or more sensing units to receive an electrical signal from the photo sensor in a display period and to receive a sensing signal from the pixel in a blank period, and an ADC to convert the signal output from the sensing unit into digital data.
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公开(公告)号：US10049629B2
公开(公告)日：2018-08-14
申请号：US14983772
申请日：2015-12-30
Applicant: LG Display Co., Ltd.
Inventor： Daeseok Oh , Moonsoo Chung
Abstract: A disclosed display device includes a display panel with a plurality of pixels and a plurality of signal lines respectively connected to the pixels, and a panel driving circuit to drive the signal lines. The display device further includes a timing controller to receive a first panel self-refresh (PSR) signal and an input image data from a host system, to sense whether the input image data has a preset video format based on the first PSR signal and, if the input image data is sensed to have the preset video format, to control the panel driving circuit to perform normal driving of the signal lines at a first frame frequency in a first group of frames and interlaced low-speed driving of the signal lines at a second frame frequency lower than the first frame frequency in a second group of frames to display the input image data.
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