US 11,778,870 B2Granted

Display device, electronic apparatus, and method of fabricating the display device

AssigneeSemiconductor Energy Laboratory Co., Ltd.

InventorShunpei Yamazaki

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Abstract

It is an object of the invention to provide a technique to manufacture a display device with high image quality and high reliability at low cost with high yield. The invention has spacers over a pixel electrode layer in a pixel region and over an insulating layer functioning as a partition which covers the periphery of the pixel electrode layer. When forming a light emitting material over a pixel electrode layer, a mask for selective formation is supported by the spacers, thereby preventing the mask from contacting the pixel electrode layer due to a twist and deflection thereof. Accordingly, such damage as a crack by the mask does not occur in the pixel electrode layer. Thus, the pixel electrode layer does not have a defect in shapes, thereby a display device which performs a high resolution display with high reliability can be manufactured.

Claims15

Dependent claims

A display device comprising a display portion, the display portion comprising:

a flexible substrate;
a semiconductor layer over the flexible substrate;
a first insulating layer over the semiconductor layer;
a gate electrode layer over the first insulating layer;
a second insulating layer over the gate electrode layer, the second insulating layer comprising silicon and nitrogen;
a third insulating layer over the second insulating layer, the third insulating layer comprising silicon and oxygen;
a conductive layer over the third insulating layer, the conductive layer being electrically connected to the semiconductor layer through a hole in the third insulating layer, the second insulating layer, and the first insulating layer;
a fourth insulating layer over the conductive layer;
a light-emitting element over the fourth insulating layer, the light-emitting element comprising:
a first electrode layer over the conductive layer and the fourth insulating layer;
a first layer over the first electrode layer, the first layer comprising an organic material;
and
a second electrode layer over the first layer;
a fifth insulating layer covering an end portion of the first electrode layer;
a sixth insulating layer over the fifth insulating layer;
and
a seventh insulating layer over the second electrode layer, the seventh insulating layer comprising silicon and nitrogen,
wherein the first insulating layer is in direct contact with the second insulating layer,
wherein the first layer is provided over the fifth insulating layer, and
wherein the second electrode layer is provided over the sixth insulating layer.

17 more elements

A display device comprising a display portion, the display portion comprising:

a flexible substrate;
a semiconductor layer over the flexible substrate;
a first insulating layer over and in direct contact with the semiconductor layer;
a gate electrode layer over and in direct contact with the first insulating layer;
a second insulating layer over and in direct contact with the gate electrode layer, the second insulating layer comprising silicon and nitrogen;
a third insulating layer over and in direct contact with the second insulating layer, the third insulating layer comprising silicon and oxygen;
a conductive layer over the third insulating layer, the conductive layer being electrically connected to the semiconductor layer through a hole in the third insulating layer, the second insulating layer, and the first insulating layer;
a fourth insulating layer over the conductive layer;
a light-emitting element over the fourth insulating layer, the light-emitting element comprising:
a first electrode layer over and in direct contact with the conductive layer and the fourth insulating layer;
a first layer over the first electrode layer, the first layer comprising an organic material;
and
a second electrode layer over the first layer;
a fifth insulating layer covering an end portion of the first electrode layer;
a sixth insulating layer over and in direct contact with the fifth insulating layer;
and
a seventh insulating layer over the second electrode layer, the seventh insulating layer comprising silicon and nitrogen,
wherein the first insulating layer is in direct contact with the second insulating layer,
wherein the first layer is provided over the fifth insulating layer, and
wherein the second electrode layer is provided over the sixth insulating layer.

17 more elements

A display device comprising a display portion, the display portion comprising:

a flexible substrate;
a semiconductor layer over the flexible substrate;
a first insulating layer over and in direct contact with the semiconductor layer;
a gate electrode layer over and in direct contact with the first insulating layer;
a second insulating layer over and in direct contact with the gate electrode layer, the second insulating layer comprising silicon and nitrogen;
a third insulating layer over and in direct contact with the second insulating layer, the third insulating layer comprising silicon and oxygen;
a conductive layer over the third insulating layer, the conductive layer being electrically connected to the semiconductor layer through a hole in the third insulating layer, the second insulating layer, and the first insulating layer;
a fourth insulating layer over the conductive layer;
a light-emitting element over the fourth insulating layer, the light-emitting element comprising:
a first electrode layer over and in direct contact with the conductive layer and the fourth insulating layer;
a first layer over the first electrode layer, the first layer comprising an organic material;
and
a second electrode layer over the first layer;
a fifth insulating layer covering an end portion of the first electrode layer;
a sixth insulating layer over and in direct contact with the fifth insulating layer;
and
a seventh insulating layer over the second electrode layer, the seventh insulating layer comprising silicon and nitrogen,
wherein the first insulating layer is in direct contact with the second insulating layer,
wherein the first layer is provided over the fifth insulating layer,
wherein the second electrode layer is provided over the sixth insulating layer, and
wherein the display portion comprises a curved portion.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/094,479Filed 9 Jan 2023 · continuation
Priority: JP 2004-28494029 Sep 2004
Published: US 2023/0165065 A125 May 2023
Granted: 3 Oct 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

H10K 59/122
Active-matrix OLED [AMOLED] displays: pixel-defining structures or layers, e.g. banks
H10H 29/14
Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00: comprising multiple light-emitting…
H10K 59/1213
Characterised by the geometry or disposition of pixel elements: the pixel elements being TFTs
H10K 59/123
Active-matrix OLED [AMOLED] displays: connection of the pixel electrodes to the thin film transistors [TFT]

Family

Application11/224,960Parent of this division · filed 14 Sep 2005
Application12/699,942Parent of this continuation · filed 4 Feb 2010
US 7,753,751 B2Parent of this division · filed 13 Jul 2010
Application13/559,634Parent of this continuation · filed 27 Jul 2012
US 8,237,355 B2Parent of this continuation · filed 7 Aug 2012
Application14/307,768Parent of this continuation · filed 18 Jun 2014
US 8,786,178 B2Parent of this continuation · filed 22 Jul 2014
Application14/854,857Parent of this continuation · filed 15 Sep 2015
US 9,147,713 B2Parent of this continuation · filed 29 Sep 2015
Application15/386,938Parent of this continuation · filed 21 Dec 2016
US 9,530,829 B2Parent of this continuation · filed 27 Dec 2016
Application15/883,354Parent of this continuation · filed 30 Jan 2018
US 9,893,130 B2Parent of this continuation · filed 13 Feb 2018
Application16/042,120Parent of this continuation · filed 23 Jul 2018
US 10,038,040 B2Parent of this continuation · filed 31 Jul 2018
Application16/556,310Parent of this continuation · filed 30 Aug 2019
US 10,403,697 B2Parent of this continuation · filed 3 Sep 2019
Application17/182,880Parent of this continuation · filed 23 Feb 2021
US 10,937,847 B2Parent of this continuation · filed 2 Mar 2021
Application17/580,235Parent of this continuation · filed 20 Jan 2022
US 11,233,105 B2Parent of this continuation · filed 25 Jan 2022
US 11,552,145 B2Parent of this continuation · filed 10 Jan 2023
US 2023/0165065 A1Pre-grant publication · published 25 May 2023
Application12/699,942Parent of this division
US 2008/0018229 A1Published application
US 2010/0176720 A1Published application
US 2012/0305922 A1Published application
US 2014/0299899 A1Published application
US 2016/0005801 A1Published application
US 2017/0104047 A1Published application
US 2018/0175126 A1Published application
US 2018/0350887 A1Published application
US 2019/0393288 A1Published application
US 2021/0257425 A1Published application
US 2022/0140030 A1Published application
US 11,778,870 B2This patent

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