Light emitting apparatus

Patent metadata

Field	Value
Publication number	US-12058882-B2
Application number	US-202117200402-A
Country	US
Kind code	B2
Filing date	Mar 12, 2021
Priority date	Mar 13, 2014
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

A light emitting apparatus (10) includes a substrate (100), an insulating layer (160), a light emitting element (102), a coating film (140), and a structure (150). The insulating layer (160) is formed over one surface of the substrate (100), and includes an opening (162). The light emitting element (102) is formed in the opening (162). The coating film (140) is formed over the one surface of the substrate (100), and covers a portion of the light emitting element (102), the insulating layer (160), and the one surface of the substrate (100). The coating film (140) does not cover another portion of the substrate (100) (for example, a portion of an end portion: hereinafter, referred to as a first portion). The structure (150) is located between the first portion of the substrate (100) and the insulating layer (160). The coating film (140) also covers the insulating layer (160).

First claim

The invention claimed is:

1. A light emitting apparatus comprising:
a substrate;
an insulating layer formed over the substrate and including an opening;
a light emitting element formed in the opening;
a coating film formed over the substrate and covering a portion of the light emitting element, the insulating layer, and the substrate;
a structure; and
a terminal,
wherein the coating film covers the structure,
wherein an upper surface of the structure is larger in width than a lower surface of the structure, in a second direction,
wherein the coating film does not cover a first portion of the substrate which is a portion of a region not covered with the insulating layer,
wherein the terminal is formed over the first portion of the substrate,
wherein the light emitting element includes:
a first electrode;
an organic layer formed over the first electrode; and
a second electrode formed over the organic layer, and

wherein the terminal has a same layer as that of the first electrode.

2. The light emitting apparatus according to claim 1 , wherein the structure extends in a first direction, and
the structure is longer than the insulating layer in the first direction.

3. The light emitting apparatus according to claim 2 , wherein
both a second portion of the substrate, which is located between the first portion and the structure, and a third portion of the substrate, which is located between the structure and the insulating layer, come into contact with the coating film, in the second direction intersecting the first direction.

4. The light emitting apparatus according to claim 3 , wherein the structure surrounds the insulating layer.

5. The light emitting apparatus according to claim 4 , further comprising
an interconnect formed on the substrate and connecting the terminal to the light emitting element.

6. The light emitting apparatus according to claim 5 , further comprising:
a plurality of the light emitting elements; and
an insulating partition wall formed over the insulating layer and separating the second electrode of each of the plurality of light emitting elements,
wherein the structure is formed of a same material as that of the partition wall.

7. The light emitting apparatus according to claim 1 , wherein the terminal includes a part of the first electrode,
wherein the organic layer is not formed over the part of the first electrode, and
wherein the part of the first electrode is located outside the insulating layer in a plain view.

Assignees

• Pioneer Corp
• Pioneer Tohoku Corp

Inventors

• Fujita Koji
• Tanaka Shinsuke
• Saito Yuji
• Nakajima Shinji

Classifications

• H10K2102/3031

  Two-side emission, e.g. transparent OLEDs [TOLED] · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/805

  Electrodes · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/871 Primary

  Self-supporting sealing arrangements · CPC title