US 2016/0079335 A1Published application

Display module

AssigneesJapan Display Inc., Panasonic Liquid Crystal Display Device Co., Ltd.

InventorToshihiro SATO

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Abstract

An organic display device includes a pixel driving circuit having a thin film transistor connected to a current supply line and a capacitor. A first insulation layer, with a first electrode thereon, covers a source electrode of the transistor. The first electrode is connected to the transistor through a contact hole in the insulation layer. A second insulation layer including an aperture is formed on the first insulation layer and electrode layers. An organic light emitting layer, with a second electrode thereon is formed in the aperture and connected to the first electrode. The second insulation layer includes an inner wall at the aperture, said inner wall having a surface of a convex plane on an edge of the recessed part of the first electrode. The convex plane is located between the organic light emitting layer and the edge of the first electrode, and the second electrode is formed over plurality of pixels.

Claims20

Dependent claims

An organic EL display module including a substrate;

a current supply line on the substrate;
a thin film transistor which is connected to the current supply line and is formed on the substrate;
a first electrode connected to the thin film transistor;
an interlayer insulation layer which is provided on the first electrode, has an aperture to expose at least a portion of the first electrode, and covers all edge portion of the first electrode;
an organic light emitting layer provided on the first electrode through the aperture and on the interlayer insulation layer;
a second electrode covering the organic light emitting layer;
and
a passivation film covering the second electrode,
wherein a thickness of the passivation film which is formed directly above the organic light emitting layer in the aperture of the interlayer insulation layer is formed to be thicker than a thickness of the passivation film which is formed directly above the interlayer insulation layer,
wherein the passivation film has a lower surface and an upper surface, and
wherein a first distance between the substrate and the lower surface of the passivation film directly above the aperture of the interlayer insulation layer is shorter than a second distance between a top portion of the interlayer insulation layer and the substrate.

8 more elements

An organic EL display device including a substrate;

a first electrode arranged over the substrate;
an insulation layer which is arranged on the first electrode, has an aperture exposing a part of the first electrode, and covers all edge portion of the first electrode;
an organic light emitting layer is arranged on the first electrode in the aperture and on the insulation layer;
a second electrode arranged on the organic light emitting layer;
and
a passivation film on the second electrode,
wherein a thickness of the passivation film which is arranged directly above the aperture of the insulation layer is thicker than a thickness of the passivation film which is arranged directly above the insulation layer,
wherein the passivation film has a lower surface and an upper surface, and
wherein a first distance between the substrate and the lower surface of the passivation film directly above the aperture of the insulation layer is shorter than a second distance between a top portion of the insulation layer and the substrate.

6 more elements

A display device including a substrate;

a first layer as an electrode arranged on the substrate;
an insulation layer which is arranged on the first layer, has an aperture exposing a part of the first layer, and covers all edge portion of the first layer;
an organic light emitting layer is arranged on the first layer in the aperture and on the insulation layer;
a second layer which is arranged on the organic light emitting layer and includes a metal material;
and
a passivation film which has a first region arranged directly above the aperture of the insulation layer and a second region arranged directly above the insulation layer,
wherein a first thickness of the first region of the passivation film is thicker than a second thickness of the second region of the passivation film,
wherein the passivation film has a lower surface and an upper surface, and
wherein a first distance between the substrate and the lower surface of the passivation film in the first region is shorter than a second distance between a top portion of the insulation layer and the substrate.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/944,524Filed 18 Nov 2015
Priority: 30 May 2014
Published: 17 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
H10K 59/1213
Characterised by the geometry or disposition of pixel elements: the pixel elements being TFTs
H10K 59/1216
Characterised by the geometry or disposition of pixel elements: the pixel elements being capacitors
H10K 59/122
Active-matrix OLED [AMOLED] displays: pixel-defining structures or layers, e.g. banks

Family

Application14/292,421Continuation · filed 30 May 2014
Application14/620,117Continuation · filed 11 Feb 2015
Application14/944,524Continuation
US 2014/0264306 A1Published application
US 2015/0155343 A1Published application
US 9,214,504 B2Related patent
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US 9,735,220 B2Related patent
US 2016/0079335 A1This patent

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