公开(公告)号：US20170309220A1

公开(公告)日：2017-10-26

申请号：US15496517

申请日：2017-04-25

Applicant: Samsung Display Co., Ltd

Inventor： Wontae KIM ,  Taegon IM

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G5/008 ,  G09G2310/0218 ,  G09G2310/08

Abstract: A display device according to an embodiment of the inventive concept includes a data driving unit, a gate driving unit, a signal control unit for controlling driving of the data driving unit and the gate driving unit, and a display panel. The data driving unit generates an internal clock signal for outputting data voltages corresponding to image data, and the display panel displays an image corresponding to the data voltages in response to a gate driving signal outputted from the gate driving unit. The data driving unit includes a filtering unit for converting a first frequency control signal received from the signal control unit so as to generate a second frequency control signal, and a clock training unit for training a clock signal received from the signal control unit so as to generate the internal clock signal in response to the second frequency control signal.

公开(公告)号：US20210027680A1

公开(公告)日：2021-01-28

申请号：US16894075

申请日：2020-06-05

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon IM ,  Sooyeon KIM ,  JiYe LEE ,  Hee-Jeong SEO ,  Junghwan CHO

IPC: G09G3/00 ,  G09G3/3225

Abstract: A display device includes a display panel including first and second panel pads electrically connected to each other, a connection board including first and second connection board pads connected to the first and second panel pads, respectively, an output pad, and a driving circuit. The driving circuit includes a pull-up resistor connected between a first voltage terminal and a first node, and a comparator configured to compare a voltage at the first node with a reference voltage and to output a contact test signal corresponding to a comparison result to the output pad. The first connection board pad is electrically connected to the first node, and the second connection board pad is connected to a second voltage terminal.

公开(公告)号：US20140192102A1

公开(公告)日：2014-07-10

申请号：US13928582

申请日：2013-06-27

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon IM ,  Myoung-Soo KIM ,  HWANWOONG LEE ,  Min-Soo CHOI ,  EUN CHUL SHIN ,  Dae-Sik LEE

IPC: H05B33/08 ,  G09G5/10

CPC classification number: G09G5/10 ,  G09G3/3406 ,  H05B33/0827

Abstract: A backlight unit includes a power converter configured to generate a light source driving voltage in response to a voltage control signal, a plurality of light emitting diode strings, where each of the light emitting diode strings receives the light source driving voltage through a first terminal thereof, a plurality of transistors corresponding to the light emitting diode strings, where each of the transistors includes: a first electrode connected to a second terminal of a corresponding light emitting diode string thereof; a second electrode; and a control electrode, and a controller connected to the control electrode and the second electrode, where the controller outputs a plurality of current control signals to control electrodes of the transistors and generate the voltage control signal, where the controller generates an over-current detection signal when any one of the current control signals has a pulse width greater than a predetermined reference width.

Abstract translation: 背光单元包括功率转换器，其被配置为响应于电压控制信号产生光源驱动电压，多个发光二极管串，其中每个发光二极管串通过其第一端子接收光源驱动电压 ，对应于发光二极管串的多个晶体管，其中每个晶体管包括：连接到其相应的发光二极管串的第二端子的第一电极; 第二电极; 以及控制电极，连接到控制电极和第二电极的控制器，其中控制器将多个电流控制信号输出到晶体管的控制电极并产生电压控制信号，其中控制器产生过电流检测 当任何一个电流控制信号具有大于预定参考宽度的脉冲宽度时的信号。

公开(公告)号：US20190295474A1

公开(公告)日：2019-09-26

申请号：US16272436

申请日：2019-02-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SOOYEON KIM ,  Sun-Koo KANG ,  Boyeon KIM ,  Jae-Han LEE ,  Taegon IM ,  Moonshik KANG ,  Junghwan CHO

IPC: G09G3/3291 ,  G09G3/36

Abstract: A display device including: a display panel including a plurality of pixels; and a data driver configured to arrange the display panel into a plurality of pixel blocks, and to output a data voltage with different slew rates to the plurality of pixel blocks, wherein the slew rates are based on distances of the plurality of pixel blocks from the data driver, wherein a boundary between adjacent pixel blocks with different slew rates is changeable.

公开(公告)号：US20190051337A1

公开(公告)日：2019-02-14

申请号：US15914004

申请日：2018-03-07

Applicant: Samsung Display Co., Ltd.

Inventor： Guhui JO ,  Wontae KIM ,  Sun-koo KANG ,  Taegon IM

IPC: G11C7/10 ,  G09G3/36

CPC classification number: G11C7/1087 ,  G09G3/20 ,  G09G3/3275 ,  G09G3/3291 ,  G09G3/3611 ,  G09G3/3677 ,  G09G3/3688 ,  G09G3/3696 ,  G09G5/001 ,  G09G2310/0275 ,  G09G2310/08 ,  G09G2320/0233 ,  G11C7/10

Abstract: A data driver includes a first latch, a second latch, a digital-to-analog converter, and an output buffer. The first latch sequentially stores first line data in response to a first sampling signal and outputs the stored data in parallel. The second latch sequentially stores second line data in response to a second sampling signal and outputs the stored data in parallel. The digital-to-analog converter converts the parallel data provided from one of the first and second latches to data voltages. The output buffer outputs the data voltages in response to a delay clock.

公开(公告)号：US20160143103A1

公开(公告)日：2016-05-19

申请号：US14841464

申请日：2015-08-31

Applicant: Samsung Display Co., Ltd.

Inventor： Wonhyoung KANG ,  Mingyu KIM ,  Taegon IM ,  Songyi HAN ,  Jintaek HONG

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  G09G3/3406 ,  G09G3/3426 ,  H05B33/0845 ,  H05B33/0851 ,  H05B33/089 ,  H05B37/0245 ,  H05B37/0263 ,  H05B37/029 ,  H05B37/032

Abstract: A backlight unit includes: a light source configured to emit light based on a driving current; and a backlight controller receiving a digital dimming signal that defines a length of an output period of the driving current from a pulse width modulator and configured to, when a duty ratio of the driving current is less than a reference duty ratio, modulates the duty ratio of the driving current so that the duty ratio of the driving current is equal to or greater than the reference duty ratio and decrease a duty ratio of the digital dimming signal.

Abstract translation: 背光单元包括：被配置为基于驱动电流发光的光源; 以及背光控制器，其接收数字调光信号，所述数字调光信号限定来自脉宽调制器的驱动电流的输出周期的长度，并且被配置为当所述驱动电流的占空比小于参考占空比时，调制所述占空比 使得驱动电流的占空比等于或大于参考占空比，并降低数字调光信号的占空比。

公开(公告)号：US20210287594A1

公开(公告)日：2021-09-16

申请号：US17115838

申请日：2020-12-09

Applicant: Samsung Display Co., Ltd.

Inventor： Sooyeon KIM ,  Hee-Jeong SEO ,  JiYe LEE ,  Taegon IM ,  JUNGHWAN CHO

IPC: G09G3/20

Abstract: Provided is a data driver including a digital to analog converter configured to convert image signal data into a plurality of data voltages, and an output buffer unit including a plurality of channels for outputting the plurality of data voltages. The output buffer unit includes a plurality of output blocks. Each output block includes one or more channels. Data voltages outputted from a first output block among the plurality of output blocks are delayed with a first time difference. Data voltages outputted from a second output block among the plurality of output blocks are delayed with a second time difference which is different from the first time difference.

公开(公告)号：US20200020297A1

公开(公告)日：2020-01-16

申请号：US16388231

申请日：2019-04-18

Applicant: Samsung Display Co., Ltd.

Inventor： Yanguk NAM ,  Dae-Sik LEE ,  Taegon IM

IPC: G09G5/00

Abstract: A display apparatus includes a display panel, a data driver, a power voltage generator, a driving controller and a timing compensator. The display panel displays an image based on input image data. The data driver outputs a data voltage to the display panel. The power voltage generator outputs a data power voltage to the data driver. The driving controller controls a driving timing of the data driver. The timing compensator changes an output timing of the data voltage of the data driver when a feedback data power voltage is less than a reference data power voltage at a start point of an active period.

公开(公告)号：US20160140912A1

公开(公告)日：2016-05-19

申请号：US14850773

申请日：2015-09-10

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon IM ,  Min-Soo CHOI ,  Min-Gyu KIM ,  Youngsup KWON ,  Eun Chul SHIN ,  Dae-Sik LEE

IPC: G09G3/34 ,  G09G3/00

CPC classification number: G09G3/3406 ,  G09G3/003 ,  G09G3/3426 ,  G09G2310/0237 ,  G09G2310/0264 ,  G09G2310/08 ,  G09G2320/062 ,  G09G2320/064 ,  G09G2320/08 ,  G09G2360/16

Abstract: A backlight unit includes a light source part including a light-emitting diode array, a DC/DC converter, a driving current controller, and a reference voltage variable part. The backlight unit is operated in a first mode or a second mode. The driving current controller controls a driving current flowing through the light-emitting diode array to have a first current level during the first mode and controls the driving current flowing through the light-emitting diode array to have a second current level during the second mode. The reference voltage variable part applies a first reference voltage to the driving current controller during the first mode and applies a second reference voltage to the driving current controller during the second mode.

Abstract translation: 背光单元包括包括发光二极管阵列，DC / DC转换器，驱动电流控制器和参考电压可变部分的光源部分。 背光单元在第一模式或第二模式下操作。 驱动电流控制器控制流过发光二极管阵列的驱动电流，以在第一模式期间具有第一电流电平，并且在第二模式期间控制流过发光二极管阵列的驱动电流具有第二电流电平。 参考电压可变部分在第一模式期间将第一参考电压施加到驱动电流控制器，并且在第二模式期间将第二参考电压施加到驱动电流控制器。

公开(公告)号：US20200265787A1

公开(公告)日：2020-08-20

申请号：US16709068

申请日：2019-12-10

Applicant: Samsung Display Co., Ltd.

Inventor： Taegon IM ,  Sooyeon KIM ,  Dongwon PARK ,  Jae-Han LEE ,  Jung Hwan CHO

IPC: G09G3/3291 ,  G09G3/36

Abstract: A display device includes a display panel, a source driver, and an alignment detection circuit. The display panel includes data lines and pads connected to the data lines. The source driver includes output lines connected to the pads to supply a data signal, and a detection circuit to selectively connect a first detection line supplied with a first detection voltage and a second detection line supplied with a second detection voltage to the output lines. The alignment detection circuit includes a detection capacitor connected between the first detection line and the second detection line, and a voltage detection circuit connected to one end of the detection capacitor to detect a voltage of the detection capacitor. The detection circuit connects a (2n−1)-th output line of the output lines to the first detection line, and connects a (2n)-th output line of the output lines to the second detection line.