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公开(公告)号：US09653027B2
公开(公告)日：2017-05-16
申请号：US14678461
申请日：2015-04-03
Applicant: Samsung Display Co., Ltd.
Inventor： Young-Soo Hwang
CPC classification number: G09G3/342 , G09G3/2092 , G09G2320/0209 , G09G2320/0233 , G09G2320/0626 , G09G2330/02 , G09G2330/12
Abstract: According to an embodiment, a display apparatus includes a display panel displaying an image, a backlight circuit supplying a light to the display panel, a host connector connected to a host, a main control board controlling the display panel to display an image in response to an image signal and a control signal that are provided from the host through the host connector, and a backlight control board separately provided from the main control board and receiving a source voltage from the host through the host connector to drive the backlight circuit.
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公开(公告)号：US11074862B2
公开(公告)日：2021-07-27
申请号：US16853185
申请日：2020-04-20
Applicant: Samsung Display Co., Ltd.
Inventor： Woo Mi Bae , Dae-Gwang Jang , Young-Soo Hwang
IPC: G09G3/3233
Abstract: An organic light emitting diode display device includes: a display area including a plurality of pixels; a compensation circuit configured to receive a current flowing through the plurality of pixels through a plurality of receiving lines connected to the plurality of pixels, and to generate a compensation value to compensate for deterioration of a driving transistor in each of the plurality of pixels based on the received current; a photo-sensor configured to measure external light to generate a light sensing signal; and a signal controller configured to cause the compensation circuit to generate the compensation value when no external light is incident on the photo-sensor such that the light sensing signal is received at a first voltage level and to perform external compensation to generate an image data signal by applying the compensation value to an image signal received from an external device.
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公开(公告)号：US10223988B2
公开(公告)日：2019-03-05
申请号：US15454168
申请日：2017-03-09
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Young-Soo Hwang
IPC: G09G3/36
Abstract: A display apparatus includes a display panel configured to display an image, and including a plurality of gate lines extending in a first direction, a plurality of data lines extending in a second direction crossing the first direction, and a plurality of pixel units electrically connected to the gate lines and the data lines, a gate driving circuit configured to output a gate signal to each of the gate lines, and a data driving circuit configured to output data signals to the data lines using a column inversion method and a dot inversion method. In the column inversion method, polarities of the data signals, applied to first and second consecutive data lines, are inverted with respect to each other, and in the dot inversion method, polarities of the data signals applied to a third data line are inverted in pixel units arranged on opposite sides of the third data line.
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公开(公告)号：US11682334B2
公开(公告)日：2023-06-20
申请号：US17863083
申请日：2022-07-12
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Seokha Hong , Joon-Chul Goh , Dongjoon Kwag , Jaesung Bae , Young-Soo Hwang
IPC: G09G3/20
CPC classification number: G09G3/2007 , G09G3/2096 , G09G2320/0233 , G09G2320/043 , G09G2320/0626
Abstract: A driving controller includes: a grayscale determiner, which determines a current grayscale of input image data, a deterioration time determiner, which determines a first deterioration time for the current grayscale corresponding to an accumulated deterioration degree, a current deterioration degree calculator, which calculates a second deterioration time by summing the first deterioration time and a calculation period, and calculates a current deterioration degree for the current grayscale according to the second deterioration time, and an image compensator, which compensates the input image data based on the current deterioration degree.
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公开(公告)号：US11127352B2
公开(公告)日：2021-09-21
申请号：US17103530
申请日：2020-11-24
Applicant: Samsung Display Co., Ltd.
Inventor： Ho Cheol Kang , Ha Neul Kim , Dae-Gwang Jang , Young-Soo Hwang
IPC: G09G3/3258 , G09G3/3266 , G09G3/3275 , H02H9/04
Abstract: An electrostatic discharge protection circuit including: a first electrostatic discharge diode including a cathode to receive a first voltage, and an anode connected to a sensing line; a first switching element to determine the first voltage as a precharging voltage applied to a source terminal of the driving transistor when a sensing operation is performed, and to determine the first voltage as a maximum voltage used in a display panel when the sensing operation is not performed; a second electrostatic discharge diode including a cathode connected to the sensing line, and an anode configured to receive a second voltage; and a second switching element configured to determine the second voltage as the precharging voltage when the sensing operation is performed, and to determine the second voltage as a minimum voltage used in the display panel when the sensing operation is not performed.
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Patent Agency Ranking
公开(公告)号：US11798464B2
公开(公告)日：2023-10-24
申请号：US17900137
申请日：2022-08-31
Applicant: Samsung Display Co., Ltd.
Inventor： Young-Soo Hwang , Joon-Chul Goh , Dongjoon Kwag , Hyungjin Kim , Ji-Eun Park , Jaesung Bae , Seokha Hong
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2300/0842 , G09G2320/0233 , G09G2320/048
Abstract: A display device includes a degradation compensator, a controller, a data driver, and a display panel. The degradation compensator generates a first fitting function and a second fitting function based on image data, generates a compensation function through a harmonic mean of the first and second fitting functions, and generates a compensation value based on the compensation function. The controller receives the compensation value, and generates input image data to which the compensation value is applied. The data driver receives the input image data to which the compensation value is applied, and converts the input image data into a data voltage. The display panel includes pixels, in which each of the pixels includes a pixel circuit which receives the data voltage and a light-emitting element electrically connected to the pixel circuit.
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公开(公告)号：US11200853B2
公开(公告)日：2021-12-14
申请号：US17232061
申请日：2021-04-15
Inventor： Young-Soo Hwang , Joon-Chul Goh , Oh Jo Kwon , Ki-Duk Kim , Jeongmin Kim , Bong Hyun You , Hyung-Min Lee , Seung Hun Choi
IPC: G09G3/3233 , G09G3/3275
Abstract: A data driver includes a gamma voltage generator configured to generate gamma voltages based on a number of data bits of a pixel data; a first digital-to-analog block configured to generate a plurality of time-division gamma voltage signals respectively corresponding to a plurality of gamma voltage groups; a plurality of time-division gamma voltage line groups for transferring the plurality of time-division gamma voltage signals; a second digital-to-analog block configured to select a time-division gamma voltage signal among the time-division gamma voltage signals according to upper bits of the pixel data in each channel; a time-division gamma voltage select block configured to select a gamma voltage according to lower bits of the pixel data in each channel; and an output buffer block configured to output the selected gamma voltage in each channel.
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8.发明授权公开(公告)号：US11443672B2
公开(公告)日：2022-09-13
申请号：US17241746
申请日：2021-04-27
Inventor： Young-Soo Hwang , Joon-Chul Goh , Ohjo Kwon , Jeongmin Kim , Bonghyun You , Hyung-Min Lee , Seung Hun Choi
Abstract: A data driver includes a digital to analog converter, a buffer and a buffer controller. The digital to analog converter is configured to receive a data signal having a digital type and to convert the data signal into a data voltage having an analog type. The buffer is configured to buffer the data voltage and to output the data voltage. The buffer controller is configured to determine a parameter of the buffer based on previous line data of the data signal and present line data of the data signal.
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公开(公告)号：US10692416B2
公开(公告)日：2020-06-23
申请号：US15689400
申请日：2017-08-29
Applicant: Samsung Display Co., Ltd.
Inventor： Yongjun Jang , Cheolwoo Park , Young-Soo Hwang , Jaewoong Kang , Seunghwan Park , Donggyu Lee
Abstract: A display apparatus includes a display panel which displays an image, and includes a gate line and a data line, a gate driving part which outputs a gate signal to the gate line and a data driving part which outputs a data signal to the data line, and selectively outputs first color gamma data, second color gamma data and third color gamma data in response to a selection signal, and generates the data signal using the first color gamma data, the second color gamma data and the third color gamma data.
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公开(公告)号：US09818329B2
公开(公告)日：2017-11-14
申请号：US14864039
申请日：2015-09-24
Applicant: SAMSUNG DISPLAY CO, LTD.
Inventor： Dongjoo Park , Sangmoon Moh , Young-Soo Hwang
CPC classification number: G09G3/20 , G09G3/3648 , G09G3/3688 , G09G2310/027 , G09G2330/021 , G09G2370/08
Abstract: Provided is a data driving circuit of a display device, the data driving circuit including a first receiving circuit which receives an external first image control signal at the start of power being supplied, a second receiving circuit which receives a second image control signal in response to an activated data packet detection signal, and a data packet detection circuit which activates the data packet detection signal when a line start field included in the first image control signal is detected.
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