Light-emitting device and electronic device

Patent metadata

Field	Value
Publication number	US-9088006-B2
Application number	US-201313886474-A
Country	US
Kind code	B2
Filing date	May 3, 2013
Priority date	May 9, 2012
Publication date	Jul 21, 2015
Grant date	Jul 21, 2015

Abstract

A light-emitting device includes a light-emitting element between two substrates, a terminal portion which includes at least two terminals and is electrically connected to the light-emitting element, and an adhesive layer between the two substrates. A substrate having a coefficient of thermal expansion of 10 ppm/K or lower is used as a substrate that overlaps with a terminal portion connected to an FPC.

First claim

What is claimed is:

1. A light-emitting device comprising:
a first substrate;
a second substrate facing the first substrate;
a light-emitting element between the first substrate and the second substrate;
a third substrate partly overlapping with the first substrate;
a terminal portion electrically connected to the light-emitting element and over the third substrate, the terminal portion comprising at least two terminals; and
an adhesive layer between the first substrate and the second substrate,
wherein a coefficient of thermal expansion of the third substrate is 10 ppm/K or lower.

2. The light-emitting device according to claim 1 ,
wherein the adhesive layer is in contact with the third substrate.

3. The light-emitting device according to claim 1 ,
wherein the third substrate does not overlap with the light-emitting element.

4. The light-emitting device according to claim 1 ,
wherein an absolute value of a difference between a first coefficient of thermal expansion of the first substrate and a second coefficient of thermal expansion of the second substrate is within 10% of the first coefficient of thermal expansion or within 10% of the second coefficient of thermal expansion.

5. An electronic device comprising the light-emitting device according to claim 4 in a display portion.

6. A light-emitting device comprising:
a first substrate;
a second substrate facing the first substrate, the second substrate overlapping with a region of the first substrate;
a light-emitting element between the first substrate and the second substrate;
a terminal portion electrically connected to the light-emitting element and over an outer region of the region of the first substrate, the terminal portion comprising at least two terminals; and
an adhesive layer between the first substrate and the second substrate,
wherein a coefficient of thermal expansion of the first substrate is 10 ppm/K or lower.

7. The light-emitting device according to claim 6 ,
wherein an absolute value of a difference between a first coefficient of thermal expansion of the first substrate and a second coefficient of thermal expansion of the second substrate is within 10% of the first coefficient of thermal expansion or within 10% of the second coefficient of thermal expansion.

8. The light-emitting device according to claim 6 ,
wherein an FPC is electrically connected to the terminal portion though an anisotropic conductive layer.

9. An electronic device comprising the light-emitting device according to claim 6 in a display portion.

Assignees

• Semiconductor Energy Lab

Inventors

• Yamazaki Shunpei
• Eguchi Shingo

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K50/30

  Organic light-emitting transistors · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/873

  Encapsulations · CPC title