公开(公告)号：US09495909B2

公开(公告)日：2016-11-15

申请号：US14533937

申请日：2014-11-05

Applicant: LG DISPLAY CO., LTD

Inventor： Ryosuke Tani ,  Sungjin Hong ,  Woojin Nam ,  Joonmin Park ,  Seonmi Lee ,  Inyoung Yang ,  Jongho Lee

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2310/0254 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045

Abstract: An organic light emitting display includes a display panel including display lines, on which a plurality of pixels each including an organic light emitting diode and a driving thin film transistor (TFT) are formed. The display lines are sequentially charged to an image display data voltage in response to an image display gate pulse in an image display period of one frame. A sensing target display line among the display lines outputs a sensing voltage corresponding to changes in electrical characteristic of the driving TFT included in each pixel in response to a sensing gate pulse during a vertical blank period excluding the image display period from the one frame and then is charged to a luminance recovery data voltage. The sensing gate pulse is supplied in the same pulse shape as the image display gate pulse in a predetermined period for charging the luminance recovery data voltage.

Abstract translation: 有机发光显示器包括：显示面板，包括显示线，其上形成有包括有机发光二极管和驱动薄膜晶体管（TFT）的多个像素。 响应于一帧的图像显示周期中的图像显示门脉冲，显示线被顺序地充电到图像显示数据电压。 显示行之间的检测目标显示行响应于在从一帧除去图像显示周期之外的垂直空白时段期间的感测门脉冲，输出对应于包括在每个像素中的驱动TFT的电特性的变化的感测电压，然后 被充电到亮度恢复数据电压。 感测门脉冲以与图像显示门脉冲相同的脉冲形状被提供在用于对亮度恢复数据电压进行充电的预定周期中。

公开(公告)号：US20130241916A1

公开(公告)日：2013-09-19

申请号：US13889903

申请日：2013-05-08

Applicant: LG DISPLAY CO., LTD.

Inventor： Shinji Takasugi ,  Taro Hasumi ,  Ryosuke Tani

IPC: G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0861 ,  G09G2310/0251 ,  H01L27/3244

Abstract: A voltage compensation type pixel circuit of an AMOLED display device includes a driving transistor serially connected to a light emitting element between high-potential and low-potential power lines to drive the light emitting element in response to a voltage supplied to a first node, a first program transistor for supplying a data voltage of a data line to a second node in response to a scan signal of a scan line, a second program transistor for supplying a reference voltage from a reference voltage supply line to the first node in response to the scan signal of the scan line, a merge transistor for connecting the first and second nodes in response to a merge signal of a merge line, a storage capacitor connected between a third node and the second node interposed between the driving transistor and the light emitting element to store a voltage which corresponds to the data voltage in which the threshold voltage is compensated, and first and second reset transistors for initializing at least two of the first, second, and third nodes to an initialization voltage of an initialization voltage line in response to a reset signal of a reset line.

Abstract translation: AMOLED显示装置的电压补偿型像素电路包括串联连接到高电位和低电位电源线之间的发光元件的驱动晶体管，以响应于提供给第一节点的电压来驱动发光元件， 第一编程晶体管，用于响应于扫描线的扫描信号将数据线的数据电压提供给第二节点;第二编程晶体管，用于响应于所述第一节点从参考电压供应线向第一节点提供参考电压 扫描线的扫描信号，用于响应于合并线的合并信号连接第一和第二节点的合并晶体管，连接在介于驱动晶体管和发光元件之间的第三节点和第二节点之间的存储电容器 以存储与补偿阈值电压的数据电压对应的电压，以及用于初始化的第一和第二复位晶体管 响应于复位线的复位信号，第一，第二和第三节点中的至少两个到初始化电压线的初始化电压。

公开(公告)号：US10019950B2

公开(公告)日：2018-07-10

申请号：US15166955

申请日：2016-05-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Ryosuke Tani ,  WooJin Nam ,  Shinji Takasugi ,  KyungHyun Cho

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/3233 ,  G09G3/3283

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/046 ,  G09G2330/021 ,  G09G2330/08 ,  G09G2330/12

Abstract: A panel defect detection method and an organic light emitting display device. A region having a high probability of a panel defect is intensively sensed through panel defect detection based on sensing results of characteristic values according to subpixels on sensing subpixel lines in an amount equal to the number of sensing subpixel lines preset in specific regions rather than all regions of a display panel. Rates and accuracy in detection of panel defects can be improved.

公开(公告)号：US09886908B2

公开(公告)日：2018-02-06

申请号：US15195402

申请日：2016-06-28

Applicant: LG Display Co., Ltd.

Inventor： Ryosuke Tani ,  SungJoon Bae ,  NaYoung Bae

IPC: G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/3275 ,  G09G3/3233 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/048

Abstract: There are provided a timing controller of operating selective sensing and an organic light emitting display device comprising the same, the timing controller being configured to selectively perform a sensing when a display panel operates in an ON state. The timing controller performs a sensing to the display panel on the basis of a temperature of the display panel, a time difference in operation of the display panel, and a degree of need for sensing of representative sub-pixels.

公开(公告)号：US10366658B2

公开(公告)日：2019-07-30

申请号：US15586846

申请日：2017-05-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Ryosuke Tani ,  Jongjin Lim

IPC: G09G3/32 ,  G09G3/3283 ,  G09G3/3233 ,  G09G3/3266

Abstract: An organic light emitting diode (OLED) display is discussed. The OLED display is capable of duty driving for controlling an emission duty of an OLED in one frame. One frame for the duty driving includes a programming period, an emission period, and a non-emission period. In the programming period, a first data voltage is applied to a gate node in response to a scan signal and a reference voltage is applied to a source node in response to a sensing signal. In the non-emission period, a second data voltage is applied to the gate node in response to the scan signal. The first data voltage corresponds to input video data to be applied to a first pixel. The second data voltage corresponds to input video data to be applied to a second pixel different from the first pixel.

公开(公告)号：US09361821B2

公开(公告)日：2016-06-07

申请号：US14328254

申请日：2014-07-10

Applicant: LG Display Co., Ltd.

Inventor： Ryosuke Tani ,  SungJin Hong ,  WooJin Nam ,  JongHo Lee

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2310/027 ,  G09G2320/0209 ,  G09G2320/0271 ,  G09G2320/0276 ,  G09G2360/16

Abstract: A display device includes: a display panel in which a plurality of data lines and a plurality of gate lines intersect in a matrix form and pixels are formed at intersecting points thereof; a data drive unit connected to the plurality of data lines and configured to output a black data voltage corresponding to a gradation level of 0 and expressing the black data voltage as a third voltage through the data lines, the third voltage greater than a first voltage, which is a minimum output value, and less than or equal to a second voltage corresponding to a gradation level of 0 when linearly extending data voltages of two or more low gradation levels; a gamma voltage supply unit outputting a gamma voltage for each gradation level to the data drive unit; and a timing controller generating a control signal to control driving of the display panel.

Abstract translation: 一种显示装置，包括：显示面板，多个数据线和多条栅极线以矩阵形状相交;像素形成在其交点; 数据驱动单元，连接到所述多个数据线，并且被配置为通过数据线输出与灰度级为0并且表示黑数据电压作为第三电压的黑数据电压，第三电压大于第一电压， 当两个或多个低灰度等级的数据电压线性扩展时，其为最小输出值，小于或等于对应于灰度等级0的第二电压; 伽马电压供给单元，将每个灰度级的伽马电压输出到数据驱动单元; 以及产生控制信号以控制显示面板的驱动的定时控制器。

公开(公告)号：US09318616B2

公开(公告)日：2016-04-19

申请号：US14446056

申请日：2014-07-29

Applicant: LG Display Co., Ltd.

Inventor： Sungjin Hong ,  Byungchul Ahn ,  Youngju Koh ,  Woojin Nam ,  Ryosuke Tani

IPC: H01L27/32 ,  H01L29/66 ,  H01L29/78 ,  H01L29/786 ,  H01L29/417 ,  H01L27/12

CPC classification number: H01L29/66969 ,  H01L21/44 ,  H01L21/47635 ,  H01L27/1225 ,  H01L27/3262 ,  H01L27/3272 ,  H01L29/41733 ,  H01L29/42356 ,  H01L29/7818 ,  H01L29/7869 ,  H01L2227/323

Abstract: Provided is a thin film transistor having an oxide semiconductor material for an organic light emitting diode display and a method for manufacturing the same. The organic light emitting diode display includes a gate electrode formed on a substrate; a gate insulating layer formed on the gate electrode; a semiconductor layer formed on the gate insulating layer to overlap with the gate electrode, and including a channel area and source and drain areas which extend from the channel area to both outsides, respectively and are conductorized; an etch stopper formed on the channel area and exposing the source area and the drain area; a source electrode contacting portions of the exposed source electrode; and a drain electrode contacting portions of the exposed drain electrode.

Abstract translation: 提供一种具有用于有机发光二极管显示器的氧化物半导体材料的薄膜晶体管及其制造方法。 有机发光二极管显示器包括形成在基板上的栅电极; 形成在所述栅电极上的栅极绝缘层; 形成在所述栅极绝缘层上以与所述栅电极重叠的半导体层，并且分别包括从所述沟道区域延伸到所述外部的沟道区域和源极和漏极区域，并且被引导; 形成在所述沟道区上并暴露所述源极区域和所述漏极区域的蚀刻停止层; 源电极接触暴露的源极的部分; 以及漏极接触暴露的漏电极的部分。

公开(公告)号：US10381429B2

公开(公告)日：2019-08-13

申请号：US15661827

申请日：2017-07-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Sunyoung Kwon ,  Dosung Kim ,  Seyoung Kim ,  Ryosuke Tani

IPC: G02F1/1345 ,  H01L27/32 ,  G09G3/36 ,  G09G3/20 ,  H01L27/12

Abstract: A display device for preventing a defective drive and improving reliability is disclosed. The display device includes a substrate including a display portion and a pad portion outside the display portion, a plurality of power lines positioned on the pad portion of the substrate and extended from the display portion, a plurality of data lines positioned in parallel with the plurality of power lines and extended from the display portion, and a plurality of bridge electrodes configured to connect at least two of the plurality of power lines. Some of the plurality of power lines include a power pad electrode on at least an end of the corresponding power line, and a number of the power pad electrodes is less than a number of the power lines.

公开(公告)号：US10355069B2

公开(公告)日：2019-07-16

申请号：US15658774

申请日：2017-07-25

Applicant: LG Display Co., Ltd.

Inventor： Dosung Kim ,  Ryosuke Tani

IPC: H01L29/08 ,  H01L27/32

Abstract: An organic light emitting diode display includes a substrate; a buffer layer on the substrate; a scan line running to a horizontal direction on the buffer layer; an intermediate insulating layer covering the scan line; a first trench having a segment shape apart from the scan line with a predetermined distance and exposing some of the substrate by patterning the intermediate insulating layer and the buffer layer; a data line running to a vertical direction on the substrate exposed by the first trench and on the intermediate insulating layer; a passivation layer covering the data line and the scan line; and a color filter filling into the trench and depositing on the passivation layer.

公开(公告)号：US10062327B2

公开(公告)日：2018-08-28

申请号：US15167419

申请日：2016-05-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Ryosuke Tani ,  KyungHyun Choi ,  ChangHoon Han

IPC: G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2300/0417 ,  G09G2300/0452 ,  G09G2300/0465 ,  G09G2310/061 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/0693

Abstract: The present exemplary embodiments relate to measurement of a characteristic of a driving transistor and sensing driving therefor. Provided are a data driver, an organic light emitting display panel, an organic light emitting display device, and a driving method thereof which are capable of measuring characteristics of a driving transistor even at a data voltage which is not so high within a short sensing time by simultaneously sensing the characteristics of the driving transistors for two or more sub pixels, among a plurality of sub pixels commonly connected to the sensing lines, while measuring characteristics (for example, a threshold voltage or a mobility) of the driving transistor.