US 10,852,576 B2Granted

Display device

AssigneeSemiconductor Energy Laboratory Co., Ltd.

InventorsMasatoshi Yokoyama, Shigeki Komori, Manabu Sato, Kenichi Okazaki, Shunpei Yamazaki

Life of this patent

Estimating the term…

Loading patent…

Abstract

To suppress a variation in characteristics of a transistor due to a released gas from an organic insulating film so that reliability of a display device is increased. The display device includes a transistor, an organic insulating film which is provided over the transistor in order to reduce unevenness due to the transistor, and a capacitor over the organic insulating film. An entire surface of the organic insulating film is not covered with components (a transparent conductive layer and an inorganic insulating film) of the capacitor, and a released gas from the organic insulating film can be released to the outside from exposed part of an upper surface of the organic insulating film.

Claims18

Dependent claims

A display device comprising:

a pixel portion comprising:
a transistor comprising an oxide semiconductor layer;
a first inorganic insulating film over the transistor;
an organic insulating film over the first inorganic insulating film;
a first transparent conductive layer over the organic insulating film;
a second inorganic insulating film over the first transparent conductive layer;
and
a second transparent conductive layer over the second inorganic insulating film,
wherein the oxide semiconductor layer comprises indium, gallium, and zinc,
wherein the first inorganic insulating film comprises a first opening,
wherein the second inorganic insulating film comprises a second opening,
wherein the second transparent conductive layer comprises a first region that is in contact with one of a source electrode layer and a drain electrode layer of the transistor in the second opening,
wherein the second inorganic insulating film comprises a second region that is in contact with the one of the source electrode layer and the drain electrode layer of the transistor in the first opening,
wherein the second region is outside the first region, and
wherein the organic insulating film comprises a third region that does not overlap with the second inorganic insulating film.

12 more elements

A display device comprising:

a pixel portion comprising:
a gate electrode;
an oxide semiconductor layer overlapping with the gate electrode with a gate insulating layer interposed therebetween;
a source electrode electrically connected to the oxide semiconductor layer;
a drain electrode electrically connected to the oxide semiconductor layer;
a first inorganic insulating film over the source electrode and the drain electrode;
an organic insulating film over the first inorganic insulating film;
a first transparent conductive layer over the organic insulating film;
a second inorganic insulating film over the first transparent conductive layer;
a second transparent conductive layer over the second inorganic insulating film;
and
a liquid crystal layer over the second transparent conductive layer,
wherein the oxide semiconductor layer comprises indium, gallium, and zinc,
wherein the first inorganic insulating film comprises a first opening,
wherein the second inorganic insulating film comprises a second opening,
wherein the second transparent conductive layer comprises a first region that is in contact with one of a source electrode layer and a drain electrode layer in the second opening,
wherein the second inorganic insulating film comprises a second region that is in contact with the one of the source electrode layer and the drain electrode layer in the first opening,
wherein the second region is outside the first region, and
wherein the organic insulating film comprises a third region that does not overlap with the second inorganic insulating film.

16 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/583,817Filed 26 Sep 2019 · continuation
Priority: JP 2012-16172620 Jul 2012
Published: US 2020/0026118 A123 Jan 2020
Granted: 1 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G02F 1/136227
Active matrix addressed cells: through-hole connection of the pixel electrode to the active element through an insulation layer
G02F 1/133345
Constructional arrangements; Manufacturing methods: insulating layers
G02F 1/134309
Electrodes: characterised by their geometrical arrangement
G02F 1/13439
Electrodes: characterised by their electrical, optical, physical properties; materials therefor; method of making

Family

Application13/942,468Parent of this continuation · filed 15 Jul 2013
Application14/746,885Parent of this continuation · filed 23 Jun 2015
US 9,097,925 B2Parent of this continuation · filed 4 Aug 2015
Application15/144,916Parent of this continuation · filed 3 May 2016
US 9,366,894 B2Parent of this continuation · filed 14 Jun 2016
Application16/026,227Parent of this continuation · filed 3 Jul 2018
US 10,018,887 B2Parent of this continuation · filed 10 Jul 2018
US 2020/0026118 A1Pre-grant publication · published 23 Jan 2020
US 10,437,091 B2Parent of this continuation
US 2014/0022480 A1Published application
US 2015/0301395 A1Published application
US 2016/0246090 A1Published application
US 2018/0329244 A1Published application
US 10,852,576 B2This patent

From the US filing history. Foreign family members aren’t listed.