公开(公告)号：US20170076668A1

公开(公告)日：2017-03-16

申请号：US15310979

申请日：2015-05-12

Applicant: JOLED INC.

Inventor： Masafumi MATSUI ,  Eiji IWAUCHI ,  Tomoyuki MAEDA

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2360/16

Abstract: A display device includes: a display unit which includes a plurality of pixels each including an organic EL element; and a control unit which adjust a value of a luminance signal to be supplied to a target pixel to be corrected, such that an actual luminance of the target pixel is equal to a reference luminance, the reference luminance being an actual luminance of a reference pixel obtained when the luminance signal to be supplied to the target pixel is supplied to the reference pixel. The reference pixel has predetermined attenuation characteristics for light emission amount.

Abstract translation: 显示装置包括：显示单元，其包括多个像素，每个像素包括有机EL元件; 以及控制单元，其将要提供给要校正的目标像素的亮度信号的值调整为使得所述目标像素的实际亮度等于参考亮度，所述参考亮度是参考像素的实际亮度 当将要提供给目标像素的亮度信号提供给参考像素时获得。 参考像素具有用于发光量的预定衰减特性。

公开(公告)号：US20170278461A1

公开(公告)日：2017-09-28

申请号：US15504866

申请日：2015-08-10

Applicant: JOLED INC.

Inventor： Tomoyuki MAEDA ,  Masafumi MATSUI

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0871 ,  G09G2310/0245 ,  G09G2310/0251 ,  G09G2310/0289 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2320/043 ,  H01L27/3244

Abstract: There is provided a drive method for a display device in which a plurality of pixel circuits are disposed in rows and columns, each of the plurality of pixel circuits including a light emitter that emits light in an amount according to a magnitude of a current supplied, and a drive transistor that supplies a current according to a magnitude of a video signal to the light emitter. The drive method includes applying an initialization voltage across a gate and a source of the drive transistor by an initialization voltage adjustment unit in an initialization period for initializing the drive transistor, the initialization voltage being higher than a threshold voltage of the drive transistor and according to a state of deterioration of the drive transistor.

公开(公告)号：US20170352314A1

公开(公告)日：2017-12-07

申请号：US15609446

申请日：2017-05-31

Applicant: JOLED INC.

Inventor： Masafumi MATSUI ,  Hitoshi TSUGE ,  Kohei EBISUNO

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0209 ,  G09G2320/0219 ,  G09G2320/0223 ,  G09G2320/0233

Abstract: Pixel circuits each include a write transistor having a gate electrode connected to a write control line, one of a drain electrode and a source electrode connected to a data line for transmitting data voltage corresponding to luminance of the pixel circuit, and the other of the drain electrode and the source electrode connected to a gate electrode of a drive transistor. A compensation circuit includes a compensation transistor connected to a compensation signal line and the write control line. A compensation voltage generation circuit outputs compensation control voltage in accordance with a representative value of data voltage for the pixel circuits. A capacitance of the write control line caused by the compensation transistor and a capacitance of the write control line caused by the write transistors of the pixel circuits have mutually opposite voltage dependence with respect to the representative value of the data voltage for the pixel circuits.

公开(公告)号：US20170309696A1

公开(公告)日：2017-10-26

申请号：US15492464

申请日：2017-04-20

Applicant: JOLED INC.

Inventor： Kohei EBISUNO ,  Masafumi MATSUI ,  Hitoshi TSUGE

IPC: H01L27/32 ,  H01L51/52

CPC classification number: H01L27/3276 ,  H01L27/3265 ,  H01L51/5206

Abstract: An active-matrix display device according to the present disclosure includes a plurality of pixels. Each of the pixels includes: a drive transistor disposed on a substrate; and an organic EL element that is caused by the drive transistor to emit light and includes an AM layer disposed above the substrate and a transparent electrode layer disposed above the AM layer. The active-matrix display device further includes: a source line that supplies data to the pixels; and a power supply line that supplies electric power to the pixels. The power supply line is shared by, among the plurality of pixels, two pixels that are adjacent to each other in a second direction that crosses a first direction in which the power supply line is extended. The source line and the AM layer are disposed not to overlap each other in a plan view of the substrate.

公开(公告)号：US20170309227A1

公开(公告)日：2017-10-26

申请号：US15492417

申请日：2017-04-20

Applicant: JOLED INC.

Inventor： Kohei EBISUNO ,  Masafumi MATSUI ,  Hitoshi TSUGE

IPC: G09G3/3233 ,  H01L27/32 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2310/0297 ,  G09G2320/0219 ,  H01L27/3262 ,  H01L27/3276

Abstract: A display device includes a plurality of pixels arranged in rows and columns, a plurality of first power lines that extend in a pixel column direction and through which a power supply voltage is supplied to the pixels, and a plurality of second power lines that extend in the pixel column direction and through which an initialization voltage different from the power supply voltage is to the pixels. The number of first power lines is greater than the number of second power lines.

公开(公告)号：US20170270856A1

公开(公告)日：2017-09-21

申请号：US15504987

申请日：2015-07-31

Applicant: JOLED INC.

Inventor： Kohei EBISUNO ,  Shinya ONO ,  Masafumi MATSUI

IPC: G09G3/3233 ,  H01L27/32

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0251 ,  G09G2310/0254 ,  G09G2310/08 ,  G09G2320/0271 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/0626 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276

Abstract: A method for driving a display device including a plurality of pixels arranged in rows and columns, each of the pixels including an organic EL device that emits light in accordance with supplied current, a driving transistor that supplies current to the organic EL device, and a storage capacitor connected between the gate of driving transistor and a source or drain thereof, includes causing the organic EL device to emit light by supplying current to the organic EL device; resetting charge of at least one of the storage capacitor and a parasitic capacitance of the organic EL device; and applying a reverse bias voltage between the gate and source of the driving transistor. The resetting is performed between the light emission and the reverse-bias application.

公开(公告)号：US20190115413A1

公开(公告)日：2019-04-18

申请号：US16053320

申请日：2018-08-02

Applicant: JOLED INC.

Inventor： Kenji KOKUDA ,  Masafumi MATSUI ,  Hitoshi TSUGE ,  Takashi OSAKO ,  Shigeo HOMURA ,  Ryoichi YASUDA

IPC: H01L27/32 ,  G09G3/3233

Abstract: A display panel includes a contact area which includes an upper conductive layer forming first electrodes of the organic EL elements, a lower conductive layer disposed below the upper conductive layer, a middle layer between the upper conductive layer and the lower conductive layer, and an insulating layer between the lower conductive layer and the middle layer. The middle layer includes a first area and a second area which are conductive and electrically connected to the upper conductive layer, and an insulating separating area which separates the first area and the second area. The lower conductive layer includes a first line which is electrically connected to the first area via a first contact hole, and a second line which is electrically connected to the second area via a second contact hole.

公开(公告)号：US20170287401A1

公开(公告)日：2017-10-05

申请号：US15471067

申请日：2017-03-28

Applicant: JOLED INC.

Inventor： Masafumi MATSUI ,  Hitoshi TSUGE ,  Kohei EBISUNO

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G06F3/1423 ,  G09G3/3233 ,  G09G5/003 ,  G09G5/14 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/066

Abstract: A plurality of pixel circuits included in a display device each includes: a drive transistor; a capacitor connected to a gate electrode and a source electrode of the drive transistor; a light-emitting element which is driven by the drive transistor; a write transistor having a gate electrode connected to a write control line for transmitting a write signal, one of a drain electrode and a source electrode connected to a data line for transmitting a data voltage corresponding to luminance, and the other of the drain electrode and the source electrode connected to the gate electrode of the drive transistor; and a compensation transistor having a gate electrode connected to the data line, and at least one of a drain electrode and a source electrode connected to the write control line, the compensation transistor being of same conductivity type as the write transistor.