公开(公告)号：US20190221164A1

公开(公告)日：2019-07-18

申请号：US16233892

申请日：2018-12-27

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO

IPC: G09G3/3266 ,  G11C19/28

Abstract: A transfer circuit includes an input circuit, a reset circuit, an output circuit, and an output stabilizer circuit, and obtains an input signal at an input terminal, holds the input signal, and outputs the input signal from an output terminal as an output signal in synchronization with a clock signal. The transfer circuit includes an inverter circuit that has an input terminal connected to at least one of the input and output terminals of the transfer circuit, and outputs, from an output terminal, an inverted signal having an inverted polarity of at least one of the input and output signals. The reset circuit includes a first transistor having a control signal end connected to the output terminal of the inverter circuit, the first transistor switching continuity and discontinuity of a signal path between one end of a first capacitor that holds the input signal and a first power supply.

公开(公告)号：US20210125556A1

公开(公告)日：2021-04-29

申请号：US17006023

申请日：2020-08-28

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO

IPC: G09G3/3233

Abstract: A pixel circuit configured to emit light based on an image signal includes: a light emitting element (organic EL element); a driver transistor configured to adjust current supplied to the light emitting element; and a write transistor connected between a signal line to which the image signal is applied and the driver transistor. The driver transistor includes: a gate electrode; a counter electrode disposed opposite the gate electrode; and a channel disposed between the gate electrode and the counter electrode. A potential applied to the counter electrode in a write period in which the write transistor conducts current in a state in which the image signal is applied to the signal line reduces a resistance value of the driver transistor to lower value than a potential applied to the counter electrode in an emission period of the light emitting element does.

公开(公告)号：US20210125555A1

公开(公告)日：2021-04-29

申请号：US17004824

申请日：2020-08-27

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO

IPC: G09G3/3233 ,  G09G3/20

Abstract: A pixel circuit includes: a driver transistor that supplies a current dependent on a voltage supplied via a signal line; a write transistor connected between the signal line and a gate electrode of the driver transistor; a first organic EL element connected to one electrode of the driver transistor, the one electrode being one of a drain electrode and a source electrode of the driver transistor; a switching transistor connected to the one electrode of the driver transistor; and a second organic EL element connected to the one electrode of the driver transistor via the switching transistor. The pixel circuit performs mobility correction that corrects a mobility of the driver transistor. The switching transistor turns ON after a write operation that writes the voltage supplied via the signal line and turns OFF before an operation that performs the mobility correction of the driver transistor begins.

公开(公告)号：US20190355323A1

公开(公告)日：2019-11-21

申请号：US16268421

申请日：2019-02-05

Applicant: JOLED INC.

Inventor： Jiro YAMADA ,  Tetsuro YAMAMOTO

IPC: G09G3/38 ,  G09G3/34

Abstract: A display unit includes a display panel that includes a plurality of pixels arranged in a matrix. Each of the pixels includes one of an optical modulator and a self-luminescent element, and one of an electrochromic element, an electrophoretic element, and an electrowetting element. Each of the pixels further includes a pixel circuit that is configured to selectively drive the one of the optical modulator and the self-luminescent element, and selectively drive the one of the electrochromic element, the electrophoretic element, and the electrowetting element.

公开(公告)号：US20190326547A1

公开(公告)日：2019-10-24

申请号：US16384424

申请日：2019-04-15

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO ,  Yasunobu HIROMASU

IPC: H01L51/52 ,  H01L27/32

Abstract: The pixels of an organic EL display panel each include an anode electrode layer, an organic layer, and a cathode electrode layer. Each of the organic layer and the cathode electrode layer is shared by the plurality of pixels. An organic EL element in each of the pixels includes an anode section, a cathode section, and a light emitting section. A conductor layer having a recess is provided in a region outside a region of the organic EL element in a view from a light exiting direction in which the organic EL element emits light. The recess includes a coated section that is covered with the organic layer and a conductor exposed section where the conductor layer is exposed. The cathode electrode layer is connected to part of the conductor exposed section.

公开(公告)号：US20180226466A1

公开(公告)日：2018-08-09

申请号：US15888398

申请日：2018-02-05

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO

IPC: H01L27/32 ,  G09G3/3241 ,  G09G3/20

CPC classification number: H01L27/3276 ,  G09G3/2003 ,  G09G3/3233 ,  G09G3/3241 ,  G09G2300/0413 ,  G09G2300/0426 ,  G09G2300/0443 ,  G09G2300/0819 ,  G09G2320/028 ,  H01L27/3211 ,  H01L27/3262 ,  H01L27/3265

Abstract: An active-matrix display device includes pixels arranged in a matrix, and each of the pixels includes subpixels that are arranged along an X direction and emit light of mutually different colors. Each of the subpixels includes a TFT element provided on a TFT substrate and an organic EL element provided on the TFT substrate. The organic EL element has an opening which is a region from which emitted light exits, and the TFT substrate includes a first layer and a second layer. When same-colored subpixels of two of the pixels adjacent in the X direction are seen in a plan view, the first layer has a portion arranged in line symmetry between the same-colored subpixels and the second layer is disposed at an identical position in the openings of the same-colored subpixels.

公开(公告)号：US20220114961A1

公开(公告)日：2022-04-14

申请号：US17495251

申请日：2021-10-06

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO ,  Kenji KOKUDA ,  Hitoshi TSUGE ,  Teppei TANAKA

IPC: G09G3/3233

Abstract: A pixel circuit driving method is a method for driving a pixel circuit that includes a drive transistor that supplies a current corresponding to a signal voltage supplied via a signal line, a write transistor connected between the signal line and a gate electrode of the drive transistor, and an organic EL element that emits light in accordance with the current. The pixel circuit driving method includes supplying a reference potential to the gate electrode of the drive transistor before a threshold correction preparation operation of making a gate-source voltage of the drive transistor higher than a threshold voltage of the drive transistor.

公开(公告)号：US20190213945A1

公开(公告)日：2019-07-11

申请号：US16233956

申请日：2018-12-27

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO

IPC: G09G3/32 ,  G11C19/28 ,  G09G3/36

Abstract: A transfer circuit includes an input circuit, a reset circuit, an output circuit, and an output stabilizer circuit, and obtains an input signal at an input terminal, holds the input signal, and outputs the input signal from an output terminal as an output signal in synchronization with a clock signal. The output stabilizer circuit includes an inverter circuit and a transistor. The inverter circuit outputs from an output terminal an inverted signal having an inverted polarity of at least one of the input signal and the output signal. The transistor has a control signal end connected to the output terminal of the inverter circuit, a first main signal end connected to a power supply line of the output stabilizer circuit, and a second main signal end connected to the output terminal of the transfer circuit.

公开(公告)号：US20180204971A1

公开(公告)日：2018-07-19

申请号：US15868577

申请日：2018-01-11

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO

IPC: H01L31/113 ,  H01L27/144 ,  H01L31/02 ,  G01J1/46 ,  G01T1/24

CPC classification number: H01L31/1136 ,  G01J1/46 ,  G01J2001/448 ,  G01T1/208 ,  G01T1/247 ,  H01L27/1446 ,  H01L31/02019

Abstract: A photodetector circuit includes: a photodetector transistor; a current output transistor; a switching transistor; and a first capacitor. The source of the photodetector transistor, the gate of the current output transistor, and the first terminal of the first capacitor are connected to one another. The source of the current output transistor, the drain of the switching transistor, and the second terminal of the first capacitor are connected to one another. The photodetector transistor has a drain connected to a reference potential line, and upon receiving light when the photodetector transistor is in an off state, the source of the photodetector transistor collects electric charges generated by an internal photoelectric effect. The current output transistor has a drain connected to a power line which can have a first power supply potential and a second power supply potential. The switching transistor has a source connected to a photodetection line.

公开(公告)号：US20180197464A1

公开(公告)日：2018-07-12

申请号：US15863290

申请日：2018-01-05

Applicant: JOLED INC.

Inventor： Tetsuro YAMAMOTO ,  Hiroshi FUJIMURA

IPC: G09G3/3208

CPC classification number: G09G3/3208 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2310/0291 ,  G09G2310/08

Abstract: A drive circuit having an output terminal includes a buffer circuit including a first transistor and a second transistor that are connected in parallel between a power supply and the output terminal. The first transistor and the second transistor are controlled such that after the first transistor and the second transistor are simultaneously turned on, the second transistor is turned off earlier than the first transistor.