公开(公告)号：US20170033692A1

公开(公告)日：2017-02-02

申请号：US15157266

申请日：2016-05-17

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Min Ho Park ,  Yoon Sik Park

IPC: H02M3/158 ,  H02M3/157 ,  H02M1/32

CPC classification number: H02M3/158 ,  H02M1/32 ,  H02M3/157 ,  H02M3/1588 ,  Y02B70/1466

Abstract: A DC-DC converter includes: a switching circuit to change a voltage value of an input voltage, and to generate an output voltage; a feedback circuit connected between an output terminal to which the output voltage is supplied and a source of a first power, and to generate a feedback voltage corresponding to the output voltage; a gate pulse generator to generate a gate pulse to be supplied to the switching circuit by utilizing the feedback voltage; a current protector to control the switching circuit by utilizing the feedback voltage and the gate pulse; and a voltage protector to control the switching circuit by utilizing the feedback voltage.

Abstract translation: DC-DC转换器包括：切换电路，用于改变输入电压的电压值，并产生输出电压; 连接在供给输出电压的输出端和第一电源之间的反馈电路，并产生与输出电压对应的反馈电压; 门脉冲发生器，通过利用反馈电压产生提供给开关电路的栅极脉冲; 电流保护器，通过利用反馈电压和栅极脉冲来控制开关电路; 以及通过利用反馈电压来控制开关电路的电压保护器。

公开(公告)号：US12094392B2

公开(公告)日：2024-09-17

申请号：US18464961

申请日：2023-09-11

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Su Han ,  Kyun Ho Kim ,  Seong Jun Kim ,  Jung Taek Kim ,  Hyung Keun Park ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/027 ,  G09G2310/0278

Abstract: A display device, includes: a scan driver configured to sequentially supply scan signals having a turn-on level to the first scan line and the second scan line during a first period and to concurrently supply scan signals having a turn-on level to the first scan line and the second scan line during a second period after the first period, wherein: a mask period corresponds to a difference between a start point of the second period and a start point of the first period in a next frame period, a first frame period and a second frame period have different mask periods, a third frame period between the first frame period and the second frame period has a same mask period as the first frame period, and a fourth frame period between the first frame period and the second frame period has a same mask period as the second frame period.

公开(公告)号：US11348505B2

公开(公告)日：2022-05-31

申请号：US17196021

申请日：2021-03-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Yong Jin Shin ,  Kyun Ho Kim ,  Hyoung Wook Kim ,  Bong Im Park ,  Uk Jae Jang

IPC: G09G3/20

Abstract: A display device includes: a display panel including pixels; a scan driver which supplies a scan signal to scan lines connected to the pixels and supplies a sensing signal to sensing lines connected to the pixels; a data driver which supplies a data signal corresponding to image data to data lines connected to the pixels; a sensing part which senses a threshold voltage of a first transistor included in each of the pixels through receiving lines connected to the pixels, and corrects the sensed threshold voltage based on a voltage drop corresponding to at least one of an internal resistance of the data lines and an internal resistance of the receiving lines; and a timing controller which generates the image data by changing input image data based on the corrected threshold voltage.

公开(公告)号：US20210398494A1

公开(公告)日：2021-12-23

申请号：US17189614

申请日：2021-03-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SANG AN KWON ,  Kyun Ho Kim ,  Woo Mi BAE ,  Jun Woo SON

IPC: G09G3/3291 ,  G09G5/06

Abstract: A display device comprises a timing controller which provides data comprising a pre-emphasis value and an image data value, and a data driver which supplies to data lines a pre-emphasis voltage generated based on the pre-emphasis value during a first period of a horizontal period, and supplies to the data lines a data voltage generated based on the image data value during a second period of the horizontal period. The timing controller provides data based on which the pre-emphasis value is changed in correspondence with one screen mode selected from a plurality of screen modes having different target color coordinates.

公开(公告)号：US11189234B2

公开(公告)日：2021-11-30

申请号：US16834207

申请日：2020-03-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Ki Hyun Pyun ,  Sung In Kang ,  Kyun Ho Kim

IPC: G09G3/3275

Abstract: Provided are a display device and a driving method thereof. The display device includes: a display panel for displaying an image, based on data signals supplied from data lines; a load controller for determining a scale factor for controlling a target luminance of the image displayed in the display panel, based on a load of first image data input from the outside; and a data driver for outputting data signals to the data lines, corresponding to the first image data corrected using the scale factor. The data driver includes a plurality of data driver chips coupled to at least one data line among the data lines. The load controller determines the scale factor, based on at least one of a total load of the first image data and local loads with respect to the respective data driver chips.

公开(公告)号：US11138940B2

公开(公告)日：2021-10-05

申请号：US17007268

申请日：2020-08-31

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sang Su Han ,  Kyun Ho Kim ,  Jung Taek Kim ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G3/3266 ,  G09G3/3291 ,  H01L27/32

Abstract: A display device includes a scan driver which includes a first stage including a first output terminal connected to a first carry line, a second output terminal connected to a first scan line, and a third output terminal connected to a first sensing line, and a second stage including a first input terminal connected to the first carry line, a fourth output terminal connected to a second scan line, and a fifth output terminal connected to a second sensing line. In a sensing period, signals having a turn-on level are respectively output from the first output terminal, the second output terminal, and the third output terminal during a predetermined delay period before signals having a turn-on level are respectively output from the fourth output terminal and the fifth output terminal.

公开(公告)号：US11132949B2

公开(公告)日：2021-09-28

申请号：US16983314

申请日：2020-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Kyun Ho Kim ,  Jung Taek Kim ,  Jae Woo Ryu ,  Joon Suk Baik ,  Yong Jin Shin ,  Uk Jae Jang ,  Ki Hyun Pyun ,  Sang Su Han

IPC: G09G3/3233

Abstract: A compensation method of a display device includes: sensing a first luminance of the display device when a first pattern is displayed on the display device; calculating a luminance prediction value corresponding to a second pattern to be displayed on the display device based on the first luminance, where the second pattern is different from the first pattern; sensing a second luminance of the display device when the second pattern is displayed on the display device; adjusting a current flowing in a first power line of the display device until the second luminance reaches the luminance prediction value; and storing compensation data corresponding to an adjusted current in a lookup table when the second luminance reaches the luminance prediction value.

公开(公告)号：US11107417B1

公开(公告)日：2021-08-31

申请号：US17031244

申请日：2020-09-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Kyun Ho Kim ,  Jae Woo Ryu ,  Hyung Keun Park ,  Joon Suk Baik ,  Sang Su Han

IPC: G09G5/00 ,  G09G3/3275 ,  G09G3/3233 ,  G09G3/3266

Abstract: A display device includes a display panel. The display panel includes a display panel including a data line, a sensing line, and pixels coupled to the data line and the sensing line. A timing controller generates clock embedded data including image data and a clock training signal. A data driver recovers a clock signal, based on the clock training signal of the clock embedded data, recovers the image data of the clock embedded data, based on the clock signal, supplies a data voltage corresponding to the image data to the data line in a first section, and receives a sensing signal from a pixel of the pixels through the sensing line in a second section different from the first section. In the second section, the data driver recovers the clock signal while the sensing signal is being received.

公开(公告)号：US11049474B2

公开(公告)日：2021-06-29

申请号：US16662540

申请日：2019-10-24

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Sung In Kang

IPC: G09G5/10

Abstract: A display device includes: a display including a gate line, a data line, and a pixel electrically coupled to the gate line and the data line; a controller configured to calculate a load of input data; a data driver configured to: generate a data signal corresponding to a grayscale value in the input data; and provide the data signal to the data line; a gate driver configured to: generate a gate signal having a pulse, based on a gate-on voltage; and provide the gate signal to the gate line; and a power supply configured to: provide the gate-on voltage to the gate driver; and vary the gate-on voltage based on the load, wherein the gate-on voltage has a voltage level for turning on the first transistor, and wherein a luminance of the display is increased as the load is increased.

公开(公告)号：US09374861B2

公开(公告)日：2016-06-21

申请号：US14667460

申请日：2015-03-24

Applicant: Samsung Display Co., Ltd.

Inventor： Kyun Ho Kim ,  Sung In Kang ,  Woo Jin Lee

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0851 ,  H05B33/0887 ,  Y02B20/347

Abstract: A backlight unit includes: a light source configured to emit light based on a driving current; a sensing resistor configured to generate a sensing voltage based on the driving current; a first comparator configured to compare the sensing voltage to a first reference voltage divided from a reference power to thereby produce a first comparison signal; a first switching element controlled by the first comparison signal applied from the first comparator to thereby switch the sensing voltage; a second comparator configured to compare the sensing voltage applied via the first switching element to a first ramp signal to thereby produce a second comparison signal; a current control switching element configured to control an amount of the driving current based on the reference power and a current control signal applied from a current controller; an abnormality detector configured to convert the second comparison signal applied from the second comparator into a DC voltage and to compare the DC voltage to a critical voltage to thereby generate a third comparison signal; and a cut-off controller configured to compare the third comparison signal applied from the abnormality detector to a cut-off voltage to control the reference power based on the comparison result.

Abstract translation: 背光单元包括：被配置为基于驱动电流发光的光源; 感测电阻器，被配置为基于所述驱动电流产生感测电压; 第一比较器，被配置为将感测电压与从参考功率分开的第一参考电压进行比较，从而产生第一比较信号; 由所述第一比较信号施加的第一比较信号控制的第一开关元件，从而切换感测电压; 第二比较器，被配置为将经由所述第一开关元件施加的感测电压与第一斜坡信号进行比较，从而产生第二比较信号; 电流控制开关元件，被配置为基于所述参考功率和从电流控制器施加的电流控制信号来控制所述驱动电流的量; 异常检测器，被配置为将从第二比较器施加的第二比较信号转换为直流电压，并将直流电压与临界电压进行比较，从而生成第三比较信号; 以及截止控制器，被配置为将从异常检测器施加的第三比较信号与截止电压进行比较，以基于比较结果来控制参考功率。