IP Library Granted Patent US 8,487,313
Granted Patent B2
US 8,487,313 · App. 12/751,681 · Granted Jul 16, 2013

Emissive device and electronic apparatus

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Quick Facts
Patent No.
US 8,487,313
App. No.
12/751,681
Granted
Jul 16, 2013
Kind
B2
Abstract

An emissive device includes a substrate; a switching element disposed on a surface of the substrate; an insulating layer covering the switching element; a contact hole disposed in the insulating layer; a first electrode disposed on a surface of the insulating layer and electrically connected to the switching element via the contact hole in the insulating layer; a second electrode disposed at a side opposite the substrate with respect to the first electrode; a luminescent layer disposed between the first electrode and the second electrode; and a light shield disposed at a side from which light from the luminescent layer emerges and having a portion covering the contact hole when viewed in a direction perpendicular to the substrate.

Claims (32)

1. A light-emitting device, comprising:

a first substrate;

a second substrate that is arranged so as to face one surface of the first substrate;

a switching element is formed on the one surface of the first substrate;

an insulating layer that covers the switching element;

a first electrode that is formed on the insulating layer and is coupled to the switching element via a contact hole of the insulating layer;

a second electrode that is arranged in a layer above the first electrode;

an auxiliary wiring that is formed by a conductive material having a resistivity lower than a resistivity of the second electrode and that is electrically connected to the second electrode, the auxiliary wiring comprising a first portion that overlaps the contact hole when the first substrate is viewed from the second substrate;

a light-emitting layer that is arranged between the first electrode and the second electrode; and

a light-shielding body that is arranged on the second substrate, the light-shielding body not being in contact with the second electrode and the light-shielding body comprising a second portion that overlaps the contact hole and the auxiliary wiring when the first substrate is viewed from the second substrate, wherein an area of the light-shielding body substantially corresponds to an area of the contact hole.

2. The light-emitting device according to claim 1 , wherein:

the switching element comprises an electrode that has a part exposed from the insulating layer that contacts a contact layer via the contact hole; and

the light-shielding body is formed by a material whose light reflectivity is lower than that of the electrode of the switching element.

3. The light-emitting device according to claim 1 , wherein:

a plurality of element groups, in which a plurality of light-emitting elements included respectively in the first electrode, the second electrode and the light emitting-layer, are arranged in a first direction, the plurality of element groups being arranged in a direction that crosses the first direction; and

the auxiliary wiring is extended in the first direction in a gap between a first element group and a second element group of the plurality of element groups, the first element group and the second element group being adjacent to each other and not being formed in a gap between a third element group, that is adjacent to the second element group on a side opposite to the first element group, and the second element group.

4. The light-emitting device according to claim 1 , wherein:

the light-shielding body is extended in a predetermined direction; and

the contact hole is formed in a shape that has a long side that extends along the predetermined direction,

wherein the predetermined direction is a longitudinal direction as viewed from a direction perpendicular to the first substrate.

5. An electronic device comprising the light-emitting device of claim 1 .

6. An electronic device comprising the light-emitting device of claim 2 .

7. An electronic device comprising the light-emitting device of claim 3 .

8. An electronic device comprising the light-emitting device of claim 4 .

9. The light-emitting device according to claim 1 , wherein:

the light-shielding body is formed by a material whose light reflectivity is lower than a light reflectivity of the auxiliary wiring.

10. The light-emitting device according to claim 1 , wherein:

the contact hole comprises a third portion that does not overlap the auxiliary wiring.

11. The light-emitting device according to claim 1 , wherein:

the light-emitting layer is in contact with a surface of at most two electrodes.

12. The light-emitting device according to claim 1 , wherein:

the auxiliary wiring does not entirely cover the contact hole.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2022
From: EL TECHNOLOGY FUSION GODO KAISHA
To: ELEMENT CAPITAL COMMERCIAL COMPANY PTE. LTD.
Reel/Frame 059435/0428 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2018
From: SEIKO EPSON CORPORATION
To: EL TECHNOLOGY FUSION GODO KAISHA
Reel/Frame 047998/0879 →