LIGHT EMITTING APPARATUS AND PRODUCTION METHOD THEREOF

• US 20160133800A1
• Filed: 01/05/2016
• Published: 05/12/2016
• Est. Priority Date: 10/29/2010
• Status: Active Grant

• Current Assignee: Nichia Corporation
• Original Assignee: Nichia Corporation
• Inventors: MIYOSHI, Tomonori, OZEKI, Kenji, TSURUHA, Tomoaki
• Granted Patent: US 10,741,729 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01L 2224/16 of an individual bump connector
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 27/156 two-dimensional arrays
• CPC Class Codes: H01L 33/483 Containers
• CPC Class Codes: H01L 33/502 Wavelength conversion materials
• CPC Class Codes: H01L 33/54 having a particular shape
• CPC Class Codes: H01L 33/56 Materials, e.g. epoxy or silicone resin
• CPC Class Codes: H01L 33/58 Optical field-shaping elements
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: H01L 33/641 characterized by the materials

Abstract

A light emitting apparatus includes an electrically insulating base member; a first electrically conductive pattern portion and a second electrically conductive pattern portion formed on an upper surface of the base member; a plurality of intermediate electrically conductive pattern portions arranged between the first and second electrically conductive pattern portions; at least one light emitting device mounted on at least one of the intermediate electrically conductive pattern portions; a protection element mounted on the first and second electrically conductive pattern portions; and a resin portion disposed around the at least one light emitting device such that (i) the first and second electrically conductive pattern portions are partially covered by the resin portion and partially exposed from the resin portion, and (ii) the protection element is covered by the resin portion.

Claims

1. A light emitting apparatus comprising:

an electrically insulating base member;

a first electrically conductive pattern portion and a second electrically conductive pattern portion formed on an upper surface of the base member;

a plurality of intermediate electrically conductive pattern portions arranged between the first and second electrically conductive pattern portions;

at least one light emitting device mounted on at least one of the intermediate electrically conductive pattern portions;

a protection element mounted on the first and second electrically conductive pattern portions; and

a resin portion disposed around the at least one light emitting device such that (i) the first and second electrically conductive pattern portions are partially covered by the resin portion and partially exposed from the resin portion, and (ii) the protection element is covered by the resin portion.

2. The light emitting apparatus according to claim 1, further comprising a transparent member disposed on the at least one light emitting device.

3. The light emitting apparatus according to claim 2, wherein an upper surface of the transparent member is exposed from the resin portion to form a light emission surface of the light emitting apparatus.

4. The light emitting apparatus according to claim 2, wherein the transparent member includes a phosphor.

5. The light emitting apparatus according to claim 4, wherein the transparent member is made of sintered phosphor.

6. The light emitting apparatus according to claim 2, wherein a thickness of the transparent member is 50-300 μ

m.

7. The light emitting apparatus according to claim 1, further comprising a frame surrounding the at least one light emitting device, the protection element, and the resin portion.

8. The light emitting apparatus according to claim 1, wherein, in a plan view, the frame has a rectangular shape with rounded corners.

9. The light emitting apparatus according to claim 1, wherein the at least one light emitting device comprises a plurality of light emitting devices that are electrically connected in series between the first and second electrically conductive pattern portions.

10. The light emitting apparatus according to claim 9, wherein the plurality of light emitting devices are linearly aligned.

11. The light emitting apparatus according to claim 1, wherein a thickness of the base member is greater than a height from an upper surface of the base member to a light emission surface of the light emitting apparatus.

12. The light emitting apparatus according to claim 1, wherein a heat conductivity of the base member is 150 W/m·

K or more.

13. The light emitting apparatus according to claim 1, wherein the base member is made of aluminum nitride.

14. The light emitting apparatus according to claim 1, wherein the first and second electrically conductive pattern portions include portions that extend from the resin portion toward different outer peripheral edges of the base member.

15. The light emitting apparatus according to claim 1, wherein each of the first and second electrically conductive pattern portions includes an elongated portion extending toward a same outer peripheral edge of the base member.