公开(公告)号：US10170040B2

公开(公告)日：2019-01-01

申请号：US15709661

申请日：2017-09-20

Applicant: Japan Display Inc.

Inventor： Yasuhiro Ogawa ,  Hiroshi Tabatake ,  Hiroyuki Kimura ,  Tetsuo Morita ,  Makoto Shibusawa

IPC: G09G3/3233 ,  G02F1/1343 ,  G09G3/3258 ,  G09G3/20 ,  G02F1/1362

Abstract: A display device includes a switching element having a first input/output terminal electrically connected to a first signal line, a first wiring electrically connected to a second input/output terminal of the switching element, a transistor having a gate electrode connected to the first wiring, a second wiring electrically connected to a source or drain of the transistor, a pixel electrode connected to the second wiring, a first insulating layer which is arranged between the first wiring and the second wiring and is arranged between the first wiring and the pixel electrode, a second insulating layer between the first insulating layer and pixel electrode, and a conducting layer between the first insulating layer and the second insulating layer, the conducting layer including a region overlapping the pixel electrode. The conducting layer includes a dividing groove dividing the conducting layer into a plurality of regions at a region overlapping the pixel electrode.

公开(公告)号：US10050094B2

公开(公告)日：2018-08-14

申请号：US15496043

申请日：2017-04-25

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

IPC: H01L27/15 ,  H01L21/00 ,  H01L27/32 ,  H01L29/786

Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.

公开(公告)号：US20210408165A1

公开(公告)日：2021-12-30

申请号：US17474228

申请日：2021-09-14

Applicant: Japan Display Inc.

Inventor： Hiroshi TABATAKE ,  Tetsuo Morita ,  Yasuhiro Ogawa

IPC: H01L27/32 ,  G09G3/3208

Abstract: A drive circuit includes a holding capacitor, an element capacitor, and an additional capacitor interposed between one of the source and the drain, and one of the high-potential line and the low-potential line. The drive circuit configured to drive the first light emitter includes a first element capacitor as the element capacitor and a first additional capacitor as the additional capacitor. The driving circuit configured to drive the second light emitter includes a second element capacitor as the element capacitor and a second additional capacitor as the additional capacitor. The first element capacitor is larger in capacitance than the second element capacitor. The first additional capacitor is smaller in capacitance than the second additional capacitor.

公开(公告)号：US10943966B2

公开(公告)日：2021-03-09

申请号：US16593069

申请日：2019-10-04

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

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

Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.

公开(公告)号：US20190251903A1

公开(公告)日：2019-08-15

申请号：US16394113

申请日：2019-04-25

Applicant: Japan Display Inc.

Inventor： Tetsuo MORITA ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

IPC: G09G3/3233 ,  G02F1/1345 ,  H01L27/12 ,  H01L27/32 ,  H01L29/786

CPC classification number: G09G3/3233 ,  G02F1/13452 ,  G02F1/13454 ,  G02F1/13624 ,  G02F1/136286 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0256 ,  G09G2320/0238 ,  H01L27/1225 ,  H01L27/1251 ,  H01L27/1255 ,  H01L27/3262 ,  H01L27/3272 ,  H01L29/7869

Abstract: Disclosed is a display device including: a driving transistor, a first switching transistor, and a pixel transistor each having a gate and a pair of terminals; a storage capacitor having a pair of terminals; and a light-emitting element having an input terminal and an output terminal. One terminal of the driving transistor is electrically connected to one terminal of the pixel transistor. The other terminal of the driving transistor is electrically connected to one terminal of the first switching transistor and the input terminal of the light-emitting element. The other terminal of the first switching transistor is electrically connected to the gate of the driving transistor and one terminal of the capacitor. The one terminal of the capacitor overlaps with an active region of the driving transistor.

公开(公告)号：US10319297B2

公开(公告)日：2019-06-11

申请号：US15670241

申请日：2017-08-07

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

IPC: H01L27/32 ,  H01L29/786 ,  H01L51/50 ,  G09G3/3233 ,  G02F1/1345 ,  H01L27/12 ,  G02F1/1362

Abstract: Disclosed is a display device including: a driving transistor, a first switching transistor, and a pixel transistor each having a gate and a pair of terminals; a storage capacitor having a pair of terminals; and a light-emitting element having an input terminal and an output terminal. One terminal of the driving transistor is electrically connected to one terminal of the pixel transistor. The other terminal of the driving transistor is electrically connected to one terminal of the first switching transistor and the input terminal of the light-emitting element. The other terminal of the first switching transistor is electrically connected to the gate of the driving transistor and one terminal of the capacitor. The one terminal of the capacitor overlaps with an active region of the driving transistor.

公开(公告)号：US11410595B2

公开(公告)日：2022-08-09

申请号：US17109242

申请日：2020-12-02

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Yasuhiro Ogawa

IPC: G09G3/32 ,  H01L25/075 ,  G09G3/20 ,  G09G3/3233

Abstract: According to one embodiment, a display device includes a display area and a driver. Each of pixels includes a light emitting element and a drive transistor connected in series. An image signal includes a first luminance data and a second luminance data. The first luminance data is based on an average value of a gradation value of pixels, and is common among the pixels included in said one area. The second luminance data is, based on a difference between the gradation value and the average value, an independent luminance data of each of the pixels. The driver controls a common luminance time of the pixels based on the first luminance data, and controls a current value to be supplied to the luminance element of each of the pixels based on the second luminance data.

公开(公告)号：US20210159297A1

公开(公告)日：2021-05-27

申请号：US17165143

申请日：2021-02-02

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

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

Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.

公开(公告)号：US10546526B2

公开(公告)日：2020-01-28

申请号：US15633960

申请日：2017-06-27

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

IPC: G09G3/3225 ,  H01L27/32 ,  H01L27/12 ,  H01L29/786

Abstract: A display device includes a pixel region having a plurality of pixel and a driver circuit outside the pixel region. The pixels have a driving transistor and a switching transistor having a gate and a pair of terminals, a light-emitting element having an input terminal, and a storage capacitor having a pair of terminals. One terminal of the switching transistor is electrically connected to the gate of the driving transistor and one terminal of the storage capacitor. One terminal of the driving transistor is electrically connected to the other terminal of the storage capacitor and the input terminal. The driver circuit includes first and second transistors having a gate and a pair of terminal. The other terminal of the switching transistor is electrically connected to one terminal of the first transistor and one terminal of the second transistor. The second transistor has a channel region including an oxide semiconductor.

公开(公告)号：US10475870B2

公开(公告)日：2019-11-12

申请号：US16032157

申请日：2018-07-11

Applicant: Japan Display Inc.

Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

IPC: H01L33/00 ,  H01L27/32 ,  H01L29/786 ,  H01L29/417 ,  H01L27/12

Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.