Source: http://www.google.com/patents/US7101061
Timestamp: 2017-09-23 08:58:22
Document Index: 560040948

Matched Legal Cases: ['art 22', 'art 22', 'art 22', 'art 22', 'arts 22', 'arts 22']

Patent US7101061 - Light emission apparatus - Google Patents
A light emission apparatus that can restrict deterioration of resin used for the light emission apparatus, and that has a reasonable structure fit for actual use is provided, in which a light reflective layer is provided to cover the side surfaces of the chips 26 provided in the concave 2 a. According...http://www.google.com/patents/US7101061?utm_source=gb-gplus-sharePatent US7101061 - Light emission apparatus
Publication number US7101061 B2
Application number US 10/688,829
Also published as US20040129946
Publication number 10688829, 688829, US 7101061 B2, US 7101061B2, US-B2-7101061, US7101061 B2, US7101061B2
Inventors Hideo Nagai, Shozo Oshio, Masaaki Yuri
Patent Citations (8), Referenced by (40), Classifications (29), Legal Events (3)
US 7101061 B2
The metal substrate 20 is used for, by means of the resin layer 21 and the like, releasing a heat generated at the time when the chips 26 are supplied electricity to outside. For this metal substrate 20, a substrate made of metal having excellent thermal conductivity characteristic is used. One example thereof is an aluminum substrate of length 30 mm, width 20 mm, and thickness 1 mm, which will be provided, at the center, with a concave 20 a whose depth is 100 μm, so as to create the concave 2 a.
The resin layer 21 is a layer made of resin having both of an excellent thermal conductivity and an insulation characteristic. This resin layer 21 insulates the first metal layer 22 provided thereover, and also insulates the second metal layer 22 b by laminating it with the resin layer 23. The composition of the resin layer 21 is, for example, an epoxy bromide resin. Furthermore, if 90 wt % alumina fine particles (e.g. those having average particle size of about 100 μm) are added thereto, it will improve the thermal conductivity of this resin. Then, the alumina fine particles function as a thermal conductive filler, so as to facilitate the heat emitted from the chips 26 to be conducted to the metal substrate 20. This will then improve the heat dissipating characteristic of the illumination apparatus. As the mentioned thermal conductive filler, fine particles of aluminum nitride, boron nitride, diamond, or the like, can be used. In addition, needless to say, the resin layer 21 may be replaced by an insulation thin-film layer made of a material having favorable insulation characteristic, such as ceramics.
FIG. 3 is a schematic plan view of the wiring pattern of the first metal layer 22 a.
As shown in this drawing, the first metal layer 22 a is comprised of a plurality of pairs each comprised of an element fixing part 22 c and a metal wire fixing part 22 d that are conducted to each other. Here, each element fixing part 22 c is for securing a chip 26, and the metal wire fixing part 22 d is for fixing the metal wire 22 e to be mounted on the top of the chip 26. When the chips 26 are fixed to the corresponding element fixing parts 22 c, the chips 26 will be connected to each other to be in a so-called “4 series 16 parallel” pattern, by means of the metal wire fixing parts 22 d and the metal wires 22 e. Note here that the number of elements for the pattern is not limited to such. In addition, by placing a metal layer in an area not in touch with this wiring pattern, the heat dissipation characteristic of the light-emitting apparatus will be made to be improved, thanks to the favorable thermal conductivity of the placed metal layer.
Now turning back to FIG. 2, the second metal layers 22 b are respectively formed by a conductive metal such as a copper foil, and are, at parts not shown in the drawing, electrically conducted to the respective ends of the power-feeder 4 (FIG. 1). The second metal layers 22 b feed the electricity fed from an external source to the first metal layer 22 a.
The resin layers 23 each cover the second metal layers 22 b made of copper foil, to insulate them from the metal layer 24, and are composed of an epoxy bromide resin and the like, which is the same composition as the resin layer 21.
Next, the VCSEL element 263 for the purpose of creating the chip 26 is attached to the aforementioned first metal layer 22 a.
JP2001155628A Title not available
US7784970 * Apr 2, 2007 Aug 31, 2010 Edison Opto Corporation Heat dissipating structure of light source utility
US8348456 Aug 9, 2007 Jan 8, 2013 Mitsubishi Chemical Corporation Illuminating device
US9123867 * Jan 27, 2012 Sep 1, 2015 Nichia Corporation Light emitting device
US20080211370 * Apr 2, 2007 Sep 4, 2008 Tsung-Ting Sun Heat dissipating structure of light source utility
US20120193665 * Jan 27, 2012 Aug 2, 2012 Nichia Corporation Light emitting device
US20150029718 * Jul 28, 2014 Jan 29, 2015 Grain Lighting, Inc. Diffuse lamp
US20150179891 * Jan 30, 2015 Jun 25, 2015 Nichia Corporation Light emitting device
USD733670 * May 22, 2014 Jul 7, 2015 Prolight Opto Technology Corporation LED module
U.S. Classification 362/294, 362/244, 362/247, 257/E25.02
International Classification F21S8/04, F21V29/00, H01L25/075, H01S5/323, H01L23/02, F21S2/00, F21V21/00, H01S5/022, F21V19/00, F21Y101/02, H01L33/64, H01L33/62, H01L33/50, H01L33/60
Cooperative Classification F21Y2115/10, F21Y2105/10, H01R12/7076, H01L25/0753, F21V19/001, F21K9/00, H01L33/60, H01L2224/48091, H01L2224/45144, H01L2924/01322