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公开(公告)号：US12198617B2
公开(公告)日：2025-01-14
申请号：US18547680
申请日：2021-08-23
Applicant: Samsung Display Co., LTD.
Inventor： Ji Hye Kim , Joon Chul Goh , Yu Chol Kim , Jin Wook Yang , Ja Kyoung Jin
IPC: G09G3/32
Abstract: A display device includes: a display panel including pixels having light-emitting elements; a timing control unit for variably changing the driving frame frequency of the display panel according to the input frame frequency of digital video data; and a data driving unit for outputting data voltages according to the digital video data, wherein the display panel operates at a first frame frequency for a first frame period and operates at a second frame frequency, which is lower than the first frame frequency, for a second frame period, the second frame period includes a data addressing period in which a data voltage corresponding to each of the pixels is applied to the pixels, and a blank period in which no data voltage is applied to each of the pixels, and the blank period includes a period of initializing a first electrode of a light-emitting element into an initialization voltage.
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公开(公告)号：US11705046B2
公开(公告)日：2023-07-18
申请号：US17471997
申请日：2021-09-10
Inventor： Young Soo Hwang , Joon Chul Goh , Oh Jo Kwon , Ki Duk Kim , Jeong Min Kim , Bong Hyun You , Hyung Min Lee , Seung Hun Choi
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2310/027 , G09G2310/0291 , G09G2310/0294 , G09G2310/08
Abstract: A data driver includes a multi-channel sample/hold circuit electrically connected between a digital-to-analog converter and a data buffer. The multi-channel sample/hold circuit includes a first sample/hold circuit connected to a first channel and a second sample/hold circuit connected to a second channel. The first sample/hold circuit performs a first drive operation and a second drive operation. The first drive operation includes sampling a data voltage as a buffer input voltage and maintaining the buffer input voltage during an nth horizontal time. The second drive operation includes outputting the buffer input voltage to an output terminal of the buffer during an (n+1)th horizontal time. The second sample/hold circuit performs the second drive operation during the nth horizontal time and performs the first drive operation during the (n+1)th horizontal time.
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公开(公告)号：US11386844B2
公开(公告)日：2022-07-12
申请号：US16943197
申请日：2020-07-30
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jae Hyeon Jeon , Joon Chul Goh , Jin Wook Yang , Ki Hong Song
IPC: G09G3/3258 , G09G3/3266
Abstract: A display device includes: a plurality of pixels, where each of the pixels includes a light emitting device and a pixel circuit coupled to the light emitting device; a scan driver which supplies a scan signal to the pixel circuit; a data driver which supplies a data signal to the pixel circuit; a power supply which supplies a voltage to the pixel circuit; a timing controller which controls the scan driver; a first signal generator which provides a first clock signal to the timing controller; and a second signal generator which provides a second clock signal to the timing controller.
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公开(公告)号：US11271582B2
公开(公告)日：2022-03-08
申请号：US17168448
申请日：2021-02-05
Inventor： Seong Joo Lee , Oh Jo Kwon , Gyeong Gu Kang , Seok Tae Koh , Joon Chul Goh , Hyun Sik Kim , Bong Hyun You
Abstract: A digital-to-analog converter (“DAC”) converts digital image data into analog image signals. The DAC includes a stage outputting different voltages to a first output terminal and a second output terminal based on a voltage supplied to a first input terminal, a voltage supplied to a second input terminal, and a first input bit. The stage includes a switch circuit including switches that are alternately turned on by a control signal, and outputting an intermediate output voltage to a third output terminal based on a first input voltage supplied to the first input terminal and a second input voltage supplied to the second input terminal, and a selector outputting one of the first input voltage and the second input voltage, and the intermediate output voltage.
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公开(公告)号：US11699395B2
公开(公告)日：2023-07-11
申请号：US17356292
申请日：2021-06-23
Applicant: Samsung Display Co., Ltd.
Inventor： Yun Ki Baek , Joon Chul Goh , Jung Taek Kim
IPC: G09G3/3241
CPC classification number: G09G3/3241 , G09G2310/061 , G09G2310/08 , G09G2360/142
Abstract: A display device according to some embodiments includes pixels divided into pixel rows arranged in a horizontal direction, and including a light emitting element, and a first transistor for applying a drive current to the light emitting element, and a sensing driver configured to receive a sensing value extracted from one or more of the pixels, wherein at least one pixel row of the pixel rows is configured to be driven in one frame including an emission period in which the light emitting element emits light after a data voltage is applied to the pixels, and an active sensing period for sensing a characteristic of the first transistor.
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Patent Agency Ranking
公开(公告)号：US10209803B2
公开(公告)日：2019-02-19
申请号：US15163210
申请日：2016-05-24
Applicant: Samsung Display Co., Ltd.
Inventor： Sang Mi Kim , Joon Chul Goh , Kyoung Ho Lim
IPC: G06F3/041 , G06F3/044 , G02F1/1333 , G02F1/1335 , G02F1/1339 , G02F1/1343
Abstract: There are provided a touch sensor and a liquid crystal display including the same. A touch sensor includes a plurality of driving electrodes, a plurality of sensing electrodes intersecting the driving electrodes, a plurality of piezoelectric materials disposed between the driving electrodes and the sensing electrodes at intersection points of the driving electrodes and the sensing electrodes, and a touch controller for detecting a touch position and a touch pressure by using sensing signals output from the sensing electrodes.
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公开(公告)号：US09799282B2
公开(公告)日：2017-10-24
申请号：US14294918
申请日：2014-06-03
Applicant: Samsung Display Co. Ltd.
Inventor： Sang Ik Lee , Young Soo Yoon , Joon Chul Goh , In Jae Hwang , Byung Sun Kim , Dae Gwang Jang , Seok Ha Hong
IPC: G09G3/36
CPC classification number: G09G3/3614 , G09G3/3655 , G09G3/3677 , G09G2310/0205 , G09G2320/0209 , G09G2320/0219 , G09G2320/0233
Abstract: A liquid crystal display device includes a plurality of pixels arranged substantially in a matrix form, where a part of the plurality of pixels defines a pixel column block, a first scan signal is simultaneously applied to an n-th row pixel and an (n+2)-th row pixel of the pixel column block, a second scan signal, which is applied prior to the first scan signal, is simultaneously applied to an (n+1)-th row pixel and an (n+3)-th row pixel of the pixel column block, a first data voltage is applied to the n-th row pixel and the (n+1)-th row pixel, a second data voltage having a polarity different from a polarity of the first data voltage is applied to the (n+2)-th row pixel and the (n+3)-th row pixel, and the polarities of the first data voltage and the second data voltage are inverted on a frame-by-frame basis.
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公开(公告)号：US09570022B2
公开(公告)日：2017-02-14
申请号：US14209650
申请日：2014-03-13
Applicant: Samsung Display Co. Ltd.
Inventor： Young Soo Yoon , Joon Chul Goh , Jung Taek Kim , Kyoung Ho Lim , Dae Gwang Jang
IPC: G02F1/1343 , G02F1/13357 , G09G3/36 , F21V8/00
CPC classification number: G09G3/3655 , G02B6/0036 , G02B6/0061
Abstract: A liquid crystal display device includes a liquid crystal panel of a normally black type which receives a plurality of scan signals and a common voltage having a voltage level which periodically varies, and a backlight unit which provides backlight to the liquid crystal panel, where the plurality of scan signals sequentially has a scan-on voltage along a first direction, and the backlight has a luminance which is increased or decreased along the first direction.
Abstract translation: 一种液晶显示装置，包括：常规黑色液晶面板，其接收多个扫描信号和具有周期性变化的电压电平的公共电压;以及背光单元，其向所述液晶面板提供背光，其中所述多个 的扫描信号依次具有沿着第一方向的扫描电压，并且背光具有沿着第一方向增加或减小的亮度。
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公开(公告)号：US12165556B2
公开(公告)日：2024-12-10
申请号：US17883848
申请日：2022-08-09
Applicant: Samsung Display Co., LTD.
Inventor： Seok Ha Hong , Joon Chul Goh , Dong Joon Kwag , Hyung Jin Kim , Ji Eun Park , Jae Sung Bae , Young Soo Hwang
IPC: G09G3/20
Abstract: A display device includes a display part, a degradation compensator that generates a first compensated grayscale value by compensating for a first grayscale value corresponding to a first pixel, and generates a second compensated grayscale value by compensating for a second grayscale value corresponding to a second pixel, and a data driver that generates a first data signal based on the first compensated grayscale value to supply the first data signal to the first pixel, and generates a second data signal based on the second compensated grayscale value to supply the second data signal to the second pixel. A second degradation curve is defined by a first degradation coefficient corresponding to a first degradation curve, and a second degradation coefficient corresponding to a first estimated degradation curve for the light conversion particles of a second color calculated by applying the first degradation curve.
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公开(公告)号：US11545060B2
公开(公告)日：2023-01-03
申请号：US17118188
申请日：2020-12-10
Applicant: Samsung Display Co., Ltd.
Inventor： Soon Dong Kim , Joon Chul Goh , Bong Hyun You , Byung Ki Chun , Seong Heon Cho
Abstract: A display device includes: a plurality of pixels; a first pixel unit comprising a first portion of the plurality of pixels; a second pixel unit comprising a second portion of the plurality of pixels; and a data driver configured to supply a data voltage to the first pixel unit and the second pixel unit, wherein the data driver is configured to generate a data voltage to be supplied to the first pixel unit based on different gamma voltages even when the same grayscale is expressed according to a driving method, and the second pixel unit is configured to be driven or not driven according to the driving method.
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