公开(公告)号：US10395595B2

公开(公告)日：2019-08-27

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

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：US09960223B2

公开(公告)日：2018-05-01

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：US10319303B2

公开(公告)日：2019-06-11

申请号：US15471067

申请日：2017-03-28

Applicant: JOLED INC.

Inventor： Masafumi Matsui ,  Hitoshi Tsuge ,  Kohei Ebisuno

IPC: G09G5/10 ,  G09G3/3258

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.

公开(公告)号：US10074310B2

公开(公告)日：2018-09-11

申请号：US15516506

申请日：2015-10-02

Applicant: JOLED INC.

Inventor： Kohei Ebisuno

IPC: G06F1/00 ,  G09G3/3233 ,  H01L51/50 ,  H01L27/12

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/0238 ,  H01L27/1255 ,  H01L51/5012

Abstract: A display device includes a display pixel having: an organic EL element; a capacitor element; a drive transistor having a gate electrode connected to a first electrode of the capacitor element and a source electrode connected to a second electrode of the capacitor element and to an anode electrode of the organic EL element; a first switch element switching a state between a signal line supplying a voltage corresponding to a data signal and the first electrode of the capacitor element, between conducting and non-conducting states; and a resistance unit having a resistance, switching a state between a power line supplying an initialization voltage and the second electrode of the capacitor element between the conducting and non-conducting states, and disposed on a current path from a node that is a connection point of the second electrode and the anode electrode of the organic EL element to the power line.

公开(公告)号：US10482814B2

公开(公告)日：2019-11-19

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

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.