Light-emitting apparatus and illumination apparatus

Patent metadata

Field	Value
Publication number	US-10153408-B2
Application number	US-201715692527-A
Country	US
Kind code	B2
Filing date	Aug 31, 2017
Priority date	Sep 7, 2016
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

A light-emitting apparatus includes a first relay line and a second relay line. The first and second relay lines are disposed between a first region and a second region of a substrate. Further, the first and second relay lines extend at least partially parallel to each other in a second direction that crosses a first direction in which the first region and the second region are aligned. The first relay line electrically connects a first light-emitting element group disposed in the first region and a third light-emitting element group disposed in the second region. The second relay line electrically connects a second light-emitting element group disposed in the first region and a fourth light-emitting element group disposed in the second region.

First claim

What is claim is:

1. A light-emitting apparatus, comprising:
a substrate including a first region and a second region aligned in a first direction;
a first light-emitting element group and a second light-emitting element group disposed on the first region on the substrate;
a third light-emitting element group and a fourth light-emitting element group disposed on the second region on the substrate;
a first terminal, a second terminal, a third terminal, and a fourth terminal disposed on the substrate; and
a first relay line and a second relay line disposed in a region between the first region and the second region on the substrate, and extending at least partially parallel to each other in a second direction that crosses the first direction, wherein
the first light-emitting element group is electrically connected with the first terminal and the first relay line,
the second light-emitting element group is electrically connected with the second terminal and the second relay line,
the third light-emitting element group is electrically connected with the third terminal and the first relay line, and
the fourth light-emitting element group is electrically connected with the fourth terminal and the second relay line.

2. The light-emitting apparatus according to claim 1 , wherein
the first light-emitting element group comprises a plurality of first light-emitting element groups,
the second light-emitting element group comprises a plurality of second light-emitting element groups,
the third light-emitting element group comprises a plurality of third light-emitting element groups, and
the fourth light-emitting element group comprises a plurality of fourth light-emitting element groups.

3. The light-emitting apparatus according to claim 1 , wherein
the first relay line is closer to the second region than the second relay line is,
the first light-emitting element group is electrically connected with the first relay line via a first metal line extending across the second relay line, and
the fourth light-emitting element group is electrically connected with the second relay line via a second metal line extending across the first relay line.

4. The light-emitting apparatus according to claim 1 , wherein
in the first region, the first light-emitting element group and the second light-emitting element group are disposed adjacently along the second direction, the second direction crossing the first direction in which the first region and the second region are aligned,
in the second region, the third light-emitting element group and the fourth light-emitting element group are disposed adjacently along the second direction, and
a direction in which the first light-emitting element group and the third light-emitting element group are aligned crosses a direction in which the second light-emitting element group and the fourth light-emitting element group are aligned.

5. The light-emitting apparatus according to claim 4 , wherein
the first light-emitting element group and the fourth light-emitting element group are disposed adjacently in the first direction, and
the second light-emitting element group and the third light-emitting element group are disposed adjacently in the first direction.

6. The light-emitting apparatus according to claim 5 , further comprising:
first partitions located between the first light-emitting element group and the second light-emitting element group, and between the third light-emitting element group and the fourth light-emitting element group, in a plan view; and
second partitions located between the first light-emitting element group and the fourth light-emitting element group, and between the second light-emitting element group and the third light-emitting element group, in the plan view.

7. The light-emitting apparatus according to claim 6 , wherein
in the plan view, the second partitions overlap a region between the first relay line and the second relay line.

8. The light-emitting apparatus according to claim 1 , further comprising:
a first sealant above the first light-emitting element group and the third light-emitting element group; and
a second sealant above the second light-emitting element group and the fourth light-emitting element group.

9. The light-emitting apparatus according to claim 8 , wherein
the first sealant and the second sealant each include phosphors of different colors and silica fillers configured to prevent settling of the phosphors.

10. The light-emitting apparatus according to claim 8 , wherein
phosphor content of the first sealant is different from phosphor content of the second sealant, such that a color temperature of light emitted through the first sealant is different from a color temperature of light emitted through the second sealant.

11. The light-emitting apparatus according to claim 8 , further comprising:
a third sealant which collectively seals the first light-emitting element group, the second light-emitting element group, the third light-emitting element group, and the fourth light-emitting element group.

12. The light-emitting apparatus according to claim 11 , wherein
the first sealant and the second sealant are over the third sealant.

13. The light-emitting apparatus according to claim 11 , wherein
the first sealant and the second sealant are under the third sealant.

14. The light-emitting apparatus according to claim 1 , wherein the light-emitting apparatus is configured to emit light having a first color when a voltage is applied between the first terminal and the third terminal, and to emit light having a second color when a voltage is applied between the second terminal and the fourth terminal.

15. The light-emitting apparatus according to claim 1 , wherein
the substrate has a quadrilateral shape in a plan view, and
the first terminal, the second terminal, the third terminal, and the fourth terminal are disposed one at each of corners of the substrate.

16. The light-emitting apparatus according to claim 1 , further comprising:
a first line which is disposed on the substrate, and electrically connects the first light-emitting element group and the first terminal;
a second line which is disposed on the substrate, and electrically connects the second light-emitting element group and the second terminal;
a third line which is disposed on the substrate, and electrically connects the third light-emitting element group and the third terminal; and
a fourth line which is disposed on the substrate, and electrically connects the fourth light-emitting element group and the fourth terminal.

17. The light-emitting apparatus according to claim 16 , further comprising:
an annular wall externally surrounding the first light-emitting element group, the second light-emitting element group, the third light-emitting element group, and the fourth light-emitting element group, wherein
each of the first line, the second line, the third line, and the fourth line is at least partially disposed under the annular wall on the substrate.

18. The light-emitting apparatus according to claim 1 , wherein
a voltage having a same value is applied to the first terminal and the second terminal.

19. The light-emitting apparatus according to claim 1 , wherein
a voltage having a same value is applied to the third terminal and the fourth terminal.

20. An illumination apparatus, comprising:
the light-emitting apparatus according to claim 1 ; and
a lighting apparatus which supplies the light-emitting apparatus with power for the ligh

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Abe Masumi
• Ogata Toshifumi
• Kurachi Toshiaki

Classifications

• H10W90/753

  between laterally-adjacent chips · CPC title

• H10W90/00

  Package configurations · CPC title

• H01L2224/48091

  Electricity · mapped topic

• H01L27/156

  Electricity · mapped topic

• H01L33/507 Primary

  Electricity · mapped topic