公开(公告)号：US11665945B2

公开(公告)日：2023-05-30

申请号：US17406614

申请日：2021-08-19

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara

IPC: H10K59/131 ,  H10K77/10 ,  H10K50/844

CPC classification number: H10K59/131 ,  H10K77/111 ,  H10K59/1201

Abstract: Disclosed is a display device including: a substrate; a first insulating film over the substrate, the first insulating film exposing a part of the substrate to provide an exposed surface to the substrate; a second insulating film in contact with the exposed surface and a first side surface of the first insulating film; and a first wiring over the second insulating film and in contact with the exposed surface, the first insulating film, and the second insulating film. The display device may further possess a third insulating film spaced from the second insulating film and in contact with the exposed surface. The first insulating film has a second side surface opposing the first side surface through the exposed surface. The third insulating film may be in contact with the second side surface, and the wiring may be located over and in contact with the third insulating film.

公开(公告)号：US11171198B2

公开(公告)日：2021-11-09

申请号：US16728104

申请日：2019-12-27

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara ,  Satoshi Maruyama

IPC: H01L27/32 ,  G02F1/1362 ,  G06F1/16 ,  H01L51/00

Abstract: Disclosed is a display device including: a first conductive film over and in contact with a substrate; a first undercoat and a second undercoat over and in contact with the first conductive film; a pixel over the first undercoat; a wiring over the first undercoat, the first conductive film, and the second undercoat and in contact with the first conductive film between the first undercoat and the second undercoat. The first undercoat and the second undercoat are spaced from each other over the first conductive film and each cover a part of the first conductive film. The wiring is configured to form a terminal to which a signal for driving the pixel is input over the second undercoat.

公开(公告)号：US11152594B2

公开(公告)日：2021-10-19

申请号：US16737340

申请日：2020-01-08

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara ,  Akinori Kamiya

IPC: H01L51/52 ,  H01L27/32

Abstract: A display device includes a first substrate, a display region arranged with a pixel including a light emitting element above the first substrate, a first inorganic insulating layer covering the display region, an organic insulating layer arranged above the first inorganic insulating layer, a second inorganic insulating layer arranged above the organic insulating layer and having a N—H bond total weight measured by an FT-IR method lower than a N—H bond total weight per unit [% area] of the first inorganic insulating layer, and a polarizing plate arranged above the second inorganic insulating layer.

公开(公告)号：US10411039B2

公开(公告)日：2019-09-10

申请号：US16016819

申请日：2018-06-25

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara

IPC: H01L27/12 ,  G02F1/133 ,  G02F1/1368 ,  H01L21/02

Abstract: Provided is a semiconductor device including: a first transistor over a substrate, the first transistor having a gate electrode, an oxide semiconductor film, and a gate insulating film between the gate electrode and the oxide semiconductor film; an insulating film over the first transistor, the insulating film having a first film and a second film over the first film; and a terminal electrically connected to the oxide semiconductor film through an opening portion in the insulating film. The insulating film has a first region in contact with the terminal, and the first region has an oxygen composition larger than that in another region of the insulating film.

公开(公告)号：US20170278869A1

公开(公告)日：2017-09-28

申请号：US15465106

申请日：2017-03-21

Applicant: Japan Display Inc.

Inventor： Masato Hiramatsu ,  Hiroki Ohara

IPC: H01L27/12 ,  H01L29/786

CPC classification number: H01L27/127 ,  H01L27/1222 ,  H01L27/1225 ,  H01L27/124 ,  H01L27/1251 ,  H01L27/1255 ,  H01L27/3246 ,  H01L27/3258 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276 ,  H01L29/78621 ,  H01L29/78675 ,  H01L29/7869 ,  H01L29/78696 ,  H01L2227/323

Abstract: A first semiconductor layer is formed on an insulating surface. A first insulating layer for covering an upper side of the first semiconductor layer is formed. On the first insulating layer, a second semiconductor layer is formed. A second insulating layer for covering an upper side of the second semiconductor layer is formed. A first contact hole extending through the first and second insulating layers to reach the first semiconductor, and a second contact hole extending through the second insulating layer to reach the second semiconductor layer but not reaching the first insulating layer are opened. After the step of forming the second insulating layer before the step of opening the first and second contact holes, laser or heat annealing process is executed.

公开(公告)号：US11765931B2

公开(公告)日：2023-09-19

申请号：US17472860

申请日：2021-09-13

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara

IPC: H01L33/00 ,  H10K50/844 ,  H10K50/11 ,  H10K50/81 ,  H10K50/82

CPC classification number: H10K50/8445 ,  H10K50/11 ,  H10K50/81 ,  H10K50/82

Abstract: A display device includes a first substrate, a display region with pixels each including a light emitting element above the first substrate, a first inorganic insulating layer covering the display region, a first organic insulating layer on the first inorganic insulating layer, a second inorganic insulating layer on the first organic insulating layer, a second organic insulating layer on the second inorganic insulating layer, a third organic insulating layer a on the second organic insulating layer, acidity of the third organic insulating layer being stronger than acidity of the second organic insulating layer, and a polarizing plate arranged on the third organic insulating layer.

公开(公告)号：US11462715B2

公开(公告)日：2022-10-04

申请号：US17004867

申请日：2020-08-27

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara ,  Akinori Kamiya

IPC: H01L51/52 ,  H01L27/12 ,  H01L27/14 ,  H01L27/32 ,  H01L29/786 ,  G02F1/133 ,  G06F1/16 ,  G09F9/30 ,  G02F1/1333 ,  G02F1/1335

Abstract: A display device in one embodiment according to the present invention includes a first region including a light emitting layer, a first nitride insulating layer over the light emitting layer, a first organic insulating layer over the first nitride insulating layer, a second nitride insulating layer over the first organic insulating layer, and a third nitride insulating layer over the second nitride insulating layer. The second nitride insulating layer is in contact with the first organic insulating layer and the third nitride insulating layer. An absolute value of a stress of the second nitride insulating layer is greater than or equal to an absolute value of a stress of the first nitride insulating layer and less than an absolute value of a stress of the third nitride insulating layer.

公开(公告)号：US11133371B2

公开(公告)日：2021-09-28

申请号：US16811677

申请日：2020-03-06

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara

IPC: H01L27/32 ,  H01L51/00

Abstract: A display device includes a substrate; an insulating layer in contact with a first surface of the substrate; a display region with a plurality of pixels each including a transistor and a display element on the insulating layer; a terminal region in a region outside the display region over the insulating layer; a wiring between the display region and the terminal region; and a resin film on the substrate. The insulating layer includes an opening in a region between the display region and the terminal region. The resin film is in contact with the first surface in the opening. The wiring is in contact with an upper surface of the resin film through the opening. A surface roughness of the resin film in the opening is larger than a surface roughness of the substrate at a region where the substrate is in contact with the insulating layer.

公开(公告)号：US10559643B2

公开(公告)日：2020-02-11

申请号：US15352947

申请日：2016-11-16

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara

IPC: H01L27/32 ,  H01L51/52

Abstract: A display device, including a display region formed of a plurality of pixels, and a terminal region formed on an outer side of the display region, includes a terminal wiring formed in the terminal region, a pixel wiring formed in each of the plurality of pixels, an insulating film, which is formed in the terminal region on an upper layer of the terminal wiring, and is formed in the display region on an upper layer of the pixel wiring, and a preventing film formed in the terminal region on an upper layer of the insulating film. The terminal wiring is exposed in an electrical connection region of the terminal region.

公开(公告)号：US10032799B2

公开(公告)日：2018-07-24

申请号：US15428537

申请日：2017-02-09

Applicant: Japan Display Inc.

Inventor： Hiroki Ohara

IPC: H01L29/10 ,  G02F1/136 ,  H01L27/12 ,  G02F1/133 ,  G02F1/1368 ,  H01L21/02

Abstract: Provided is a semiconductor device including: a first transistor over a substrate, the first transistor having a gate electrode, an oxide semiconductor film, and a gate insulating film between the gate electrode and the oxide semiconductor film; an insulating film over the first transistor, the insulating film having a first film and a second film over the first film; and a terminal electrically connected to the oxide semiconductor film through an opening portion in the insulating film. The insulating film has a first region in contact with the terminal, and the first region has an oxygen composition larger than that in another region of the insulating film.