Light-emitting device package

Patent metadata

Field	Value
Publication number	US-2017117443-A1
Application number	US-201515319318-A
Country	US
Kind code	A1
Filing date	May 27, 2015
Priority date	Jun 16, 2014
Publication date	Apr 27, 2017
Grant date	—

Abstract

A light-emitting device package according to an embodiment includes a package body including a cavity and a recessed portion formed around the cavity, the recessed portion having at least one concave portion; at least one light-emitting device mounted in the cavity; a light-transmitting member disposed to cover a top of the cavity and configured to transmit light emitted from the at least one light-emitting device; and a bonding member accommodated in the at least one concave portion so as to allow the light-transmitting member and the package body to be bonded to each other in the recessed portion.

First claim

1 . A light-emitting device package, comprising:
a package body including a cavity, and a recessed portion disposed around the cavity; at least one light-emitting device mounted in the cavity; a light-transmitting member disposed to cover a top of the cavity and configured to transmit light emitted from the at least one light-emitting device; and a bonding member accommodated in the recessed portion so as to allow the light-transmitting member and the package body to be bonded to each other in the recessed portion, wherein the recessed portion comprises: at least one first recessed portion disposed on a top of the package body around the cavity and having a concave cross-sectional view; and a second recessed portion disposed on the top of the package body and between the at least one first recessed portion and the cavity; and wherein the bonding member is disposed in the first and second recessed portions.

2 . The package according to claim 1 , wherein the at least one first recessed portion has a ring plan shape.

3 . The package according to claim 1 , wherein the at least one first recessed portion has a dot plan shape.

4 . The package according to claim 1 , wherein the at least one first recessed portion includes a plurality of first recessed portions spaced apart from one another by a predetermined distance in a direction that is perpendicular to a thickness direction of the package body.

5 . The package according to claim 4 , wherein the separation distance between the first recessed portions is equal to or less than a half a length of each of the first recessed portions.

6 . The package according to claim 1 , wherein the at least one first recessed portion is spaced apart from the cavity by a first distance, the second recessed portion being disposed between the at least one first recessed portion and the cavity.

7 . The package according to claim 1 , wherein the light-transmitting member is spaced apart from an upper surface of the package body by a second distance in a thickness direction of the package body in the recessed portion, and the second distance is equal to or greater than zero and is less than a depth of the at least one first recessed portion.

8 . The package according to claim 1 , wherein at least one of the cavity, the at least one first recessed portion, or the second recessed portion has a circular, elliptical, or polygonal plan shape.

9 . The package according to claim 1 , wherein the bonding member is located to seal a space between the package body and the light-transmitting member.

10 . The package according to claim 1 , wherein the at least one light-emitting device emits light in a wavelength band of ultraviolet light.

11 . The package according to claim 1 , wherein the bonding member includes an UV bond, acryl, urethane, silicon, or epoxy.

12 . The package according to claim 10 , wherein the at least one light-emitting device includes:
a sub mount; and a light-emitting diode flip-bonded on the sub mount.

13 . The package according to claim 1 , wherein the light-transmitting member includes a flat sheet, a semispherical lens, or a spherical lens.

14 . The package according to claim 1 , further comprising a molding member located in the cavity so as to enclose the at least one light-emitting device.

15 . The package according to claim 1 , wherein the cavity is in a vacuum state.

16 . The package according to claim 1 , further comprising a rubber ring located between a side surface of the light-transmitting member and the package body.

17 . The package according to claim 16 , wherein the rubber ring is located on the bonding member in a space between the light-transmitting member and the package body.

18 . The package according to claim 16 , wherein the rubber ring has a circular, elliptical, or polygonal plan shape.

19 . The package according to claim 16 , wherein the rubber ring has a width ranging from 0.1 mm to 0.15 mm.

20 . The package according to claim 1 , wherein the concave portion has a spatial volume that is equal to or greater than a volume of the bonding member.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Byung Mok
• Kim Ha Na
• Kodaira Hiroshi
• Kim Baek Jun
• Lee Jung Woo
• Hwang Sang Ung

Classifications

• H10W74/00

  Encapsulations, e.g. protective coatings · CPC title

• H01L33/58

  Electricity · mapped topic

• H01L33/483 Primary

  Electricity · mapped topic

• H10H20/855

  Optical field-shaping means, e.g. lenses · CPC title

• H10H20/852

  Encapsulations · CPC title