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公开(公告)号：US10909935B2
公开(公告)日：2021-02-02
申请号：US16506154
申请日：2019-07-09
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Jinho Park , Jong Deuk Moon , Su-Han Woo , Kyung-Hun Lee , Kyung-Uk Choi
Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
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12.发明授权公开(公告)号：US10902817B2
公开(公告)日：2021-01-26
申请号：US16244344
申请日：2019-01-10
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Kyung-Hun Lee , Ho Lee
Abstract: A liquid crystal display device includes a source device that outputs image data and a sink device that performs a displaying operation based on the image data. The source device changes a frame rate of an image frame composing the image data while the displaying operation is performed. The sink device changes a frame rate of a panel driving frame for the displaying operation by adjusting a vertical blank period of the panel driving frame as the frame rate of the image frame is changed. Here, the sink device adjusts a common voltage applied to a display panel included in the sink device during a display operation of an individual frame, in accordance with the frame rate of the panel driving frame.
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公开(公告)号：US10685618B2
公开(公告)日：2020-06-16
申请号：US15829007
申请日：2017-12-01
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Haksun Kim , Kyung-hun Lee , Ho Lee
IPC: G09G3/36 , G09G3/3291 , G09G5/00
Abstract: A display device includes a display panel which includes a plurality of gate lines and a plurality of pixels, where each of the pixels is connected to a corresponding gate line among the gate lines, and a gate driving circuit which includes a stage that applies a gate signal to at least one of the gate lines. The gate signal includes a high period in which the gate signal has a high voltage and a low period in which the gate signal has a low voltage having a level less than a level of the high voltage, and the low period includes a falling period in which the low voltage falls to a second level from a first level which is greater than the second level.
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公开(公告)号：US20200066215A1
公开(公告)日：2020-02-27
申请号：US16506154
申请日：2019-07-09
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Jinho Park , Jong Deuk Moon , Su-Han Woo , Kyung-Hun Lee , Kyung-Uk Choi
Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
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公开(公告)号：US10395616B2
公开(公告)日：2019-08-27
申请号：US15443566
申请日：2017-02-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Haksun Kim , Kyung-Hun Lee
Abstract: A display apparatus includes a display panel comprising a pixel which is connected to a gate line and a data line, a gate driver configured to generate a gate signal having a gate-on voltage and a gate-off voltage and to provide the gate line with the gate signal, and a gate controller configured to generate a clock signal having a duty ratio and to provide the gate driver with the clock signal, where a mean amplitude of the clock signal in a vertical blanking period of a frame cycle is smaller than the mean amplitude of the clock signal in an active period of the frame cycle.
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Patent Agency Ranking
公开(公告)号：US11295688B2
公开(公告)日：2022-04-05
申请号：US16903746
申请日：2020-06-17
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Haksun Kim , Kyung-Hun Lee
Abstract: A display apparatus includes a display panel comprising a pixel which is connected to a gate line and a data line, a gate driver configured to generate a gate signal having a gate-on voltage and a gate-off voltage and to provide the gate line with the gate signal, and a gate controller configured to generate a clock signal having a duty ratio and to provide the gate driver with the clock signal, where a mean amplitude of the clock signal in a vertical blanking period of a frame cycle is smaller than the mean amplitude of the clock signal in an active period of the frame cycle.
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公开(公告)号：US11289034B2
公开(公告)日：2022-03-29
申请号：US16773887
申请日：2020-01-27
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Seong Soon Cho , Jongwoon Kim , Kyung-Hun Lee
IPC: G09G3/34
Abstract: A display device includes a backlight unit including light source rows, each of the light source rows including light source blocks, a display panel configured to display an image by transmitting light emitted by the backlight unit, a panel driver configured to drive the display panel, and a backlight driver configured to drive the backlight unit. The backlight driver is configured to perform a vertical direction scan operation that sequentially select the light source rows and a horizontal direction sequential driving operation that sequentially drives the light source blocks included in a selected light source row of the light source rows.
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公开(公告)号：US11276357B2
公开(公告)日：2022-03-15
申请号：US17145572
申请日：2021-01-11
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jahun Koo , Jinho Park , Jong Deuk Moon , Su-Han Woo , Kyung-Hun Lee , Kyung-Uk Choi
Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
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公开(公告)号：US11054699B2
公开(公告)日：2021-07-06
申请号：US16430593
申请日：2019-06-04
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Jinho Park , Kyung-hun Lee , Ho Lee , Tae-Jong Jun , Woo-young Cheon
IPC: G02F1/13357 , G02F1/1335
Abstract: A display apparatus includes a light source unit configured to output light, a display panel configured to display an image and including a first substrate, a second substrate facing the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, and a diffusion layer provided between the light source unit and the display panel and including scatterers for scattering the light supplied from the light source unit. The diffusion layer has a first concentration area in which the scatterers are provided at a first concentration, and a second concentration area in which the scatterers are provided at a second concentration.
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公开(公告)号：US10832631B2
公开(公告)日：2020-11-10
申请号：US16426531
申请日：2019-05-30
Applicant: Samsung Display Co., Ltd.
Inventor： Jahun Koo , Haksun Kim , Kyung-hun Lee
Abstract: A display device includes a display panel which includes pixels arranged in a matrix form and a controller which receives a first image signal corresponding to a first active period of a first frame, outputs a first final output signal corresponding to a first conversion active period of the first frame, and drives the display panel based on the first final image signal. The controller includes a timing changing unit which receives the first image signal and changes a first image signal pixel size corresponding to the first image signal to a panel pixel size corresponding to the display panel to generate the first output signal, and a frequency changing unit which receives the first output signal from the timing changing unit and reduces a frame frequency of the first output signal based on the first image signal to output the first final output signal.
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