公开(公告)号：US20210327367A1

公开(公告)日：2021-10-21

申请号：US17230819

申请日：2021-04-14

Applicant: Samsung Display Co., Ltd.

Inventor： Bo Young AN ,  Kyung Man KIM ,  Wook LEE

IPC: G09G3/3291 ,  G09G3/3233 ,  G09G3/20

Abstract: A display device includes: a display panel including a plurality of pixels; a sensing data memory configured to store sensing data for threshold voltages of driving transistors of the plurality of pixels; a controller configured to determine a total threshold voltage shift amount for the driving transistors of the plurality of pixels based on the sensing data, to determine total luminance data based on input image data, to determine a frame stress based on the total luminance data and the total threshold voltage shift amount, to determine a target compensation voltage level based on the frame stress, and to generate compensated image data by compensating the input image data based on the target compensation voltage level; and a data driver configured to provide data voltages to the plurality of pixels based on the compensated image data.

公开(公告)号：US20240105102A1

公开(公告)日：2024-03-28

申请号：US18229789

申请日：2023-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung Hoon BANG ,  Dong Ki EUN ,  Seung Ho PARK ,  Seok Gyu BAN ,  Wook LEE

IPC: G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/2096 ,  G09G3/3233 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/041

Abstract: A display device includes a pixel component including first pixels which emits light having a first color, and second pixels which emits light having a second color different from the first color, a sensing component which extracts, during a sensing period, first sensing data from the first pixels, and second sensing data from the second pixels, and a temperature determiner which senses a temperature of the pixel component using the first sensing data and the second sensing data. The temperature determiner senses, when the first sensing data is supplied to the temperature determiner, the temperature of the pixel component at least one time.

公开(公告)号：US20230162670A1

公开(公告)日：2023-05-25

申请号：US17983462

申请日：2022-11-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sunghoon BANG ,  Seokgyu BAN ,  Dong-Ki EUN ,  Seungho PARK ,  Wook LEE

IPC: G09G3/3225

CPC classification number: G09G3/3225 ,  G09G2300/0842 ,  G09G2320/041 ,  G09G2310/061 ,  G09G2320/0271 ,  G09G2320/0257

Abstract: A display device including: a display panel including a plurality of pixels; a display panel driver configured to drive the display panel; a memory device configured to store a reference current-temperature model that is set for the display panel, a global offset of the display panel, which is calculated based on the reference current-temperature model in a manufacturing stage of the display panel, and a local offset of the display panel, which is calculated based on a characteristic difference between the pixels in the manufacturing stage; and a panel temperature determiner configured to measure sensing currents flowing through the pixels when a temperature sensing voltage is applied to the pixels, calculate correction sensing currents by applying the global offset and the local offset to the sensing currents, and determine temperatures of the pixels by substituting the correction sensing currents into the reference current-temperature model.

公开(公告)号：US20190051250A1

公开(公告)日：2019-02-14

申请号：US16043794

申请日：2018-07-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wook LEE

IPC: G09G3/3266

Abstract: A display device includes first pixels connected to first scan lines and data lines, a second pixel region including a second scan line and control line and at least one second pixel connected to the second scan line and the control line, a scan driver which drives at least the first scan lines, a sensor unit which is connected to the second pixel and senses current that flows through the second pixel in response to a sensing mode in a predetermined sensing period, and a timing controller which drives the sensor unit in response to the sensing mode, controls a driving order of the first scan lines in response to a first mode, and sets a division driving condition of the first scan lines in the first mode in response to a sensing signal input from the sensor unit in the sensing period.

公开(公告)号：US20180012543A1

公开(公告)日：2018-01-11

申请号：US15644289

申请日：2017-07-07

Applicant: Samsung Display Co., Ltd.

Inventor： Wook LEE ,  Sung Hwan KIM ,  Jeong Hwan SHIN

IPC: G09G5/393

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G5/393 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0828 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/02

Abstract: An organic light emitting display device includes one or more pixels connected to scan lines, feedback lines, and data lines, and including driving transistors configured to control an amount of current supplied to organic light emitting diodes, a sensor configured to generate compensation data based on sensing data including deviation information of a driving transistor of the driving transistors and first reference data for a sensing period, a data driver configured to supply a first reference data signal to the data line based on second reference data for the sensing period, and a scan driver configured to supply a scan signal to the scan line, wherein the sensor is configured to generate the compensation data while changing a bit value of the second reference data two or more times during the sensing period.

公开(公告)号：US20140347253A1

公开(公告)日：2014-11-27

申请号：US14036401

申请日：2013-09-25

Applicant: Samsung Display Co., Ltd.

Inventor： Wook LEE

IPC: H05B33/08 ,  G09G3/32

CPC classification number: H05B33/0896 ,  G09G3/3233 ,  G09G3/3275 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0216 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/045

Abstract: A compensation unit includes a current source unit, a current sink unit, a sensing resistor, a comparator, and a memory. The current source unit is configured to supply a first reference current to a first node. The current sink unit is configured to sink a second reference current from the first node. The sensing resistor is coupled between the first node and a second node. The comparator is configured to: compare a voltage at the first node with a voltage at the second node, and output a comparison result signal based on the comparison. The memory unit is configured to: store compensation data related to operational disparity of at least one organic light emitting diode and/or of at least one driving transistor, output the compensation data, and modify the compensation data based on the comparison result signal.

Abstract translation: 补偿单元包括电流源单元，电流宿单元，感测电阻器，比较器和存储器。 当前源单元被配置为向第一节点提供第一参考电流。 当前宿单元被配置为从第一节点吸收第二参考电流。 感测电阻器耦合在第一节点和第二节点之间。 比较器被配置为：将第一节点处的电压与第二节点处的电压进行比较，并且基于比较输出比较结果信号。 存储单元被配置为：存储与至少一个有机发光二极管和/或至少一个驱动晶体管的操作差异相关的补偿数据，输出补偿数据，并且基于比较结果信号修改补偿数据。

公开(公告)号：US20210407387A1

公开(公告)日：2021-12-30

申请号：US17475617

申请日：2021-09-15

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu BAN ,  Kyung Man KIM ,  Wook LEE

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US20210134214A1

公开(公告)日：2021-05-06

申请号：US17009676

申请日：2020-09-01

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Gyu BAN ,  Kyung Man KIM ,  Wook LEE

IPC: G09G3/32

Abstract: A display device includes a display unit, a timing controller, a data driver, and a sensing unit. The display unit includes a data line, a sensing line, and a pixel that includes a light emitting element and a transistor for providing a driving current to the light emitting element. The timing controller generates a first voltage value by compensating a first grayscale value and generates a second voltage value by remapping the first voltage value from a first voltage range to in a second voltage range. The data driver generates a data voltage based on the second voltage value and supplies the data voltage to the data line. The sensing unit provides an initialization voltage to the sensing line. A voltage difference between the data voltage and a threshold voltage of the transistor is greater than or equal to the initialization voltage.

公开(公告)号：US20190164484A1

公开(公告)日：2019-05-30

申请号：US16162105

申请日：2018-10-16

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Jae YEO ,  Wook LEE

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device includes: a first pixel row including n pixels coupled to a first scan line; a second pixel row including m pixels coupled to a second scan line; a first power voltage source for supplying a first power voltage to the pixels of the first pixel row and the second pixel row through a first power voltage line; a current sensor for sensing a value of a line current flowing between the first power voltage line and a selected pixel row among the first pixel row and the second pixel row; and a timing controller for calculating a converted current value of the selected pixel row, wherein n is a natural number, and m is a natural number greater than n.

公开(公告)号：US20140240305A1

公开(公告)日：2014-08-28

申请号：US14040925

申请日：2013-09-30

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Se-Byung CHAE ,  Wook LEE ,  Jeong-Hwan SHIN

IPC: G09G3/36

CPC classification number: G09G3/3225 ,  G09G3/3696 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2330/02 ,  G09G2360/16

Abstract: A power system for an organic light emitting diode (OLED) display includes a power supplier and a power source controller. The power supplier respectively supplies a first power source voltage and a second power source voltage to first and second power source voltage application lines. The power source controller calculates a reference power source voltage corresponding to a maximum average grayscale using a distribution for each grayscale of first to third image data, models each voltage drop of the first and second power source voltages for first to third subpixels, and reflects the voltage drop to the reference power source voltage to change the second power source voltage.

Abstract translation: 用于有机发光二极管（OLED）显示器的电力系统包括电源和电源控制器。 电源分别向第一和第二电源电压施加线提供第一电源电压和第二电源电压。 电源控制器使用对于第一至第三图像数据的每个灰度级的分布来计算对应于最大平均灰度的参考电源电压，对第一至第三子像素的第一和第二电源电压的每个电压降建模，并且反映 电压降到参考电源电压以改变第二电源电压。