公开(公告)号：US12260818B2

公开(公告)日：2025-03-25

申请号：US18195684

申请日：2023-05-10

Applicant: Samsung Display Co., LTD.

Inventor： Hayong Jung ,  Wook Lee ,  Sung Hwan Kim ,  Jaehoon Shin

IPC: G09G3/32 ,  G09G3/3233

Abstract: A sensing circuit includes a first line selection switch which connects a first sensing line to a sensing channel in a first sub-sensing period, a first noise selection switch which connects the first sensing line to a reference channel in a second sub-sensing period, a second line selection switch which connects a second sensing line to the sensing channel in the second sub-sensing period, and a second noise selection switch which connects the second sensing line to the reference channel in the first sub-sensing period. The sensing channel samples a first sensing voltage and noise of the first sensing line and the reference channel samples noise of the second sensing line in a first sampling period, and the sensing channel samples a second sensing voltage and noise of the second sensing line and the reference channel samples noise of the first sensing line in a second sampling period.

公开(公告)号：US12020607B2

公开(公告)日：2024-06-25

申请号：US18125622

申请日：2023-03-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jongbin Kim ,  Seungho Park ,  Boyoung An ,  Wook Lee ,  Ji-Woong Jeong

IPC: G09G3/00 ,  G09G3/20 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/2096 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2320/041 ,  G09G2330/028 ,  G09G2330/12

Abstract: A display apparatus includes a display panel including pixels, a gate driver outputting gate signals to the pixels, a data driver outputting data voltages to the pixels, a sensing circuit receiving sensed signals from the pixels, a power voltage generator applying a power voltage, and a driving controller for stopping the display panel, the gate driver, the data driver, and/or the power voltage generator when the display panel is determined to be defective. The driving controller selects a first-mode threshold set or a second-mode threshold set based on an initial value set related to the sensed signals for determining whether the display panel is defective. Thresholds in the first-mode threshold set respectively correspond to and are respectively unequal to thresholds in the second-mode threshold set.

公开(公告)号：US11551622B2

公开(公告)日：2023-01-10

申请号：US17643850

申请日：2021-12-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Seokgyu Ban ,  Wook Lee ,  Jaehoon Shin

IPC: G09G3/3291

Abstract: A display apparatus includes a display panel, a compensator, a controller, and a data driver. The compensator determines a degradation grayscale of a compensation region of the display panel. The degradation grayscale may be determined based on a driving time of at least one pixel in the compensation region and degradation data corresponding to the at least one pixel. The controller generates compensated image data for input image data based on the degradation grayscale. The data driver provides a data voltage to the at least one pixel based on the compensated image data.

公开(公告)号：US11482181B2

公开(公告)日：2022-10-25

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：US11282433B2

公开(公告)日：2022-03-22

申请号：US16986157

申请日：2020-08-05

Applicant: Samsung Display Co., Ltd.

Inventor： Su Min Yang ,  Wook Lee ,  Hye Ji Kim ,  Ki Hyun Pyun

IPC: G09G3/20 ,  G09G3/32

Abstract: A display device includes first pixels partitioned into a plurality of blocks, each of the plurality of blocks being categorized as a first block or a second block, a sensor configured to generate first sensing data for at least two of the first pixels in each of the plurality of blocks during a first period, and a sensing controller configured to generate interpolated data for the first pixels that are not sensed by the sensor by interpolating the first sensing data, for the first block, and configured to forgo interpolation of the first sensing data, for the second block. The sensor generates second sensing data for the first pixels that are not sensed by the sensor, for the second block, during a second period after the first period.

公开(公告)号：US10755644B2

公开(公告)日：2020-08-25

申请号：US16511378

申请日：2019-07-15

Applicant: Samsung Display Co., Ltd.

Inventor： Wook Lee

IPC: G09G3/3258 ,  G09G3/3275 ,  G09G3/3266

Abstract: A display device includes: a pixel circuit including a switching transistor connected to a data line, a storage capacitor connected to the switching transistor, a driving transistor connected to the storage capacitor, an organic light-emitting diode connected to the driving transistor and a sensing transistor connected between a sensing line and the driving transistor; and a data-sensing circuit including a first selector connected to the data line and the sensing line, a second selector connected to an output terminal of an amplifier, he first selector and a feedback capacitor, where the second selector selectively connects the output terminal of the amplifier to the first selector and the feedback capacitor, a third selector connected to the sensing line, and a fourth selector connected to the output terminal of the amplifier and the third selector.

公开(公告)号：US10565908B2

公开(公告)日：2020-02-18

申请号：US15357856

申请日：2016-11-21

Applicant: Samsung Display Co., Ltd.

Inventor： Wook Lee

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

Abstract: A display device includes a display panel including a pixel electrically connected to a feedback line, a sensor electrically connected to the feedback line, the sensor being configured to measure an impedance of the pixel in response to a first control signal, and to measure a driving current flowing through the pixel in response to a second control signal, and a timing controller configured to selectively generate the first control signal and the second control signal based on an aging time of the display panel.

公开(公告)号：US10311778B2

公开(公告)日：2019-06-04

申请号：US15194281

申请日：2016-06-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Wook Lee

IPC: G09G3/3208 ,  G09G3/20

Abstract: A display device includes: a display panel including a plurality of pixels; a power voltage generator to generate a high power voltage that is provided to the pixels through a high power line; a degradation compensator to calculate a degradation degree of the pixels by measuring a power current flowing through the high power voltage line, and to calculate a compensation amount of a degradation of the pixels based on the degradation degree of the pixels and image data provided to the pixels; a scan driver to provide scan signals to the pixels; a data driver to provide data signals to the pixels; and a timing controller to generate control signals to control the power voltage generator, the degradation compensator, the scan driver, and the data driver.

公开(公告)号：US09378683B2

公开(公告)日：2016-06-28

申请号：US14222207

申请日：2014-03-21

Applicant: Samsung Display Co., Ltd.

Inventor： Se-Byung Chae ,  Wook Lee

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G2310/0291

Abstract: A display device is disclosed. In one aspect, the display device includes a display panel including a plurality of pixels, and a data driver including a plurality of data output unit buffers electrically connected to a plurality of data lines electrically connected to the pixels. Each of the data output unit buffers includes an output terminal, a first transistor for applying a high level data voltage to the output terminal, and a second transistor for applying a low level data voltage to the output terminal. Each of the data output unit buffers also includes a first switch electrically connecting the first and second transistors to the output terminal, and a second switch electrically connecting a ground voltage to the output terminal.

Abstract translation: 公开了一种显示装置。 在一个方面，显示装置包括包括多个像素的显示面板和数据驱动器，其包括电连接到电连接到像素的多个数据线的多个数据输出单元缓冲器。 数据输出单元缓冲器中的每一个包括输出端子，用于向输出端子施加高电平数据电压的第一晶体管和用于向输出端子施加低电平数据电压的第二晶体管。 每个数据输出单元缓冲器还包括将第一和第二晶体管电连接到输出端子的第一开关以及将接地电压电连接到输出端子的第二开关。

公开(公告)号：US09275606B2

公开(公告)日：2016-03-01

申请号：US13935270

申请日：2013-07-03

Applicant: Samsung Display Co., Ltd.

Inventor： Dong-Woo Lee ,  Wook Lee

IPC: G09G3/32 ,  G09G5/02

CPC classification number: G09G3/3258 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3283 ,  G09G5/02 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2320/0233 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2330/00 ,  G09G2330/028

Abstract: A display device, a driving control device of the display device, and a driving control method are disclosed. In one aspect, the display device comprises a display unit consisting of a plurality of pixels including a light emitting element emitting light according to a driving current corresponding to a data signal; a scan driver transmitting a scan signal through a plurality of scan lines; a data driver transmitting a data signal through a plurality of data lines; a power supply unit supplying a driving voltage to drive a plurality of pixels through a power source wire; and a driving controller connected to the power source wire, obtaining an actual output voltage value of the driving voltage output from the power source voltage supply unit, and compensating a deviation of the driving voltage in a process step by using the actual output voltage value.

Abstract translation: 公开了显示装置，显示装置的驱动控制装置和驱动控制方法。 一方面，显示装置包括由多个像素组成的显示单元，所述多个像素包括根据与数据信号相对应的驱动电流发光的发光元件; 扫描驱动器，其通过多条扫描线发送扫描信号; 数据驱动器，通过多条数据线发送数据信号; 提供驱动电压以通过电源线驱动多个像素的电源单元; 以及连接到电源线的驱动控制器，获得从电源电压单元输出的驱动电压的实际输出电压值，并且通过使用实际输出电压值来补偿处理步骤中的驱动电压的偏差。