Metal coating method, light-emitting device, and manufacturing method for the same
A light-emitting device includes: a light-emitting element; a coating member that covers the light-emitting element; and two external connection electrodes exposed form a first surface of the coating member. Each of the external connection electrodes includes an electrode buried in the coating member; and a metal layer formed on the electrode. A surface of each of the metal layers is exposed from the first surface of the coating member. The first surface of the coating member includes a plurality of grooves between the external connection electrodes.
1. A light-emitting device comprising:
a light-emitting element;
a coating member that covers the light-emitting element; and
two external connection electrodes exposed form a first surface of the coating member,
wherein each of the external connection electrodes includes an electrode buried in the coating member; and a metal layer formed on the electrode,
wherein a surface of each of the metal layers is exposed from the first surface of the coating member,
wherein the first surface of the coating member includes a plurality of grooves between the external connection electrodes, and
wherein each of the metal layers is not formed on the coating member.
2. The light-emitting device according to claim 1 ,
wherein each of the electrodes comprises copper, and the metal layer comprises a stack of nickel layer and a gold layer.
3. The light-emitting device according to claim 1 ,
wherein the plurality of grooves are arranged in stripes.
4. The light-emitting device according to claim 1 ,
wherein each of the external connection electrodes includes an exposed surface, which serves as a mounting surface, and
wherein the light-emitting device further comprises a wavelength conversion member on a side opposite to the mounting surface.
5. The light-emitting device according to claim 1 ,
wherein the plurality of grooves have a width in a range of 10-100 μm.
6. The light-emitting device according to claim 1 ,
wherein the plurality of grooves have a depth in a range of 0.2-3 μm.
7. The light-emitting device according to claim 1 ,
wherein one of the two external connection electrodes has a rectangular shape in a plane view, the plurality of grooves extend in a direction parallel to a longer side of the rectangular shape.
8. The light-emitting device according to claim 1 ,
wherein a shape of one of the two external connection electrodes is different from a shape of the other of the two external connection electrodes.
9. A light-emitting device comprising:
a light-emitting element;
a coating member that covers the light-emitting element; and
two external connection electrodes exposed from a first surface of the coating member,
wherein each of the external connection electrodes includes an electrode buried in the coating member; and a metal layer formed on the electrode,
wherein a surface of each of the metal layers is exposed from the first surface of the coating member,
wherein the first surface of the coating member includes a plurality of grooves between the external connection electrodes,
wherein each of the external connection electrodes includes an exposed surface, which serves as a mounting surface, and
wherein the light-emitting device further comprises a wavelength conversion member on a side opposite to the mounting surface.
10. The light-emitting device according to claim 9 ,
wherein each of the electrodes comprises copper, and the metal layer comprises a stack of a nickel layer and a gold layer.
11. The light-emitting device according to claim 9 ,
wherein the plurality of grooves are arranged in stripes.
12. The light-emitting device according to according to claim 9 ,
wherein the plurality of grooves have a width in a range of 10-100 μm.
13. The light-emitting device according to according to claim 9 ,
wherein the plurality of grooves have a depth in a range of 0.2-3 μm.
14. The light-emitting device according to according to claim 9 ,
wherein one of the two external connection electrodes has a rectangular shape in a plane view, the plurality of grooves extend in a direction parallel to a longer side of the rectangular shape.
15. The light-emitting device according to according to claim 9 ,
wherein a shape of one of the two external connection electrodes is different from a shape of the other of the two external connection electrodes.
16. A light-emitting device comprising:
a light-emitting element;
a coating member that covers the light-emitting element; and
two external connection electrodes exposed from a first surface of the coating member,
wherein each of the external connection electrodes includes an electrode buried in the coating member; and a metal layer formed on the electrode,
wherein a surface of each of the metal layers is exposed from the first surface of the coating member,
wherein the first surface of the coating member includes a plurality of grooves between the external connection electrodes, and
wherein a shape of one of the two external connection electrodes is different from a shape of the other of the two external connection electrodes.
17. The light-emitting device according to claim 16 ,
wherein each of the electrodes comprises copper, and the metal layer comprises a stack of a nickel layer and a gold layer.
18. The light-emitting device according to claim 16 ,
wherein the plurality of grooves are arranged in stripes.
19. The light-emitting device according to according to claim 16 ,
wherein the plurality of grooves have a width in a range of 10-100 μm.
20. The light-emitting device according to according to claim 16 ,
wherein the plurality of grooves have a depth in a range of 0.2-3 μm.
21. The light-emitting device according to according to claim 16 ,
wherein one of the two external connection electrodes has a rectangular shape in a plane view, the plurality of grooves extend in a direction parallel to a longer side of the rectangular shape.