KR20100083907A - Led package and method for manufacturing the same - Google Patents
Led package and method for manufacturing the same Download PDFInfo
- Publication number
- KR20100083907A KR20100083907A KR1020090003237A KR20090003237A KR20100083907A KR 20100083907 A KR20100083907 A KR 20100083907A KR 1020090003237 A KR1020090003237 A KR 1020090003237A KR 20090003237 A KR20090003237 A KR 20090003237A KR 20100083907 A KR20100083907 A KR 20100083907A
- Authority
- KR
- South Korea
- Prior art keywords
- anode
- cathode
- led package
- reflective surface
- led
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/93—Batch processes
- H01L24/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L24/97—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
Abstract
Description
The present invention relates to an LED package and a method of manufacturing the same. More specifically, the LED chip is directly connected to the reflecting surface to show high thermal conductivity, high adhesion to the LED chip, and high reflectivity as part of the cathode and anode are used as reflecting surfaces. The present invention relates to an LED package and a method of manufacturing the same, which eliminates the need for a separate component.
A light-emitting diode (LED) is a kind of p-n junction diode of a semiconductor, which refers to a light emitting diode that emits an electric signal by transmitting an electrical signal to a semiconductor terminal, which is a compound, and converting it into light.
For these LEDs, the package for modularization is an important factor.These packaged LEDs are applied to almost all industries such as home appliances, automobiles, architecture, medical devices, displays, and the environment. The trend is.
In particular, LED-based lighting is emerging because the performance index of high-brightness white LEDs is 100 l m / W, which is well above the level of incandescent lamps and halogen lamps, and is higher than that of general fluorescent lamps. In addition, in terms of power consumption, life, durability, robustness, integration, etc. are showing advantages in various forms.
The packaging process is very important for obtaining these excellent LEDs.
1 is a view showing the basic structure of a typical high power LED module. The LED module contains an LED package.
As shown in FIG. 1, a typical LED module may include an
The
Meanwhile, the
In such a conventional LED module, it is common that the reflective surface A on which the light emitted from the
In addition, in the lead frame having a two-stage structure formed by separating the cathode and the anode, a molding material serving as an insulator is present in the center, and the LED chip has no choice but to be mounted on the molding material. Accordingly, there was a problem that the heat dissipation capacity is falling.
On the other hand, in the structure using the same material as the
Therefore, there is an urgent need to develop a package method for an LED module having a high heat dissipation capability and reliability while being able to be configured with a simple structure that minimizes an interface.
The present invention has been made to solve the above-mentioned problems of the prior art.
Another object of the present invention is to configure an LED package consisting of two simple metals, the asymmetrical formation of the two metals to the LED chip is mounted on the metal to provide an LED module having a high heat dissipation capacity and thermal conductivity To get it.
Another object of the present invention is to use the metal material itself constituting the LED package as a reflective surface to show a high reflection efficiency and does not require a separate component for the reflective surface to reduce the manufacturing cost, reduce the weight of the finished product To make it possible.
Another object of the present invention is to minimize the space occupied by the plastic molding for insulation in the LED package, so that the LED chip can be mounted on a large portion of the metal material and thus have excellent heat dissipation ability.
It is still another object of the present invention to facilitate the formation of the reflective surface by half-etching the portion where the cathode, the anode and the reflective surface contact each other in the LED package, and the heat dissipation capability of the finished product is improved by maximizing the contact area between the LED chip, the cathode and the anode. To improve.
It is still another object of the present invention to maximize the contact force between the LED chip and other components by half-etching the portion where the LED chip is mounted in the LED package so that the durability and reliability of the finished product can be improved.
In order to achieve the above object, according to an embodiment of the present invention, there is provided an LED package including a cathode, an anode, a reflecting surface and a lead frame which are continuously formed integrally with each of the cathode and the anode.
And, in order to achieve the above object, according to another embodiment of the present invention, a lead frame; A cathode and an anode, each end extending from the lead frame and the other end facing each other at a predetermined distance from each other; And a reflective surface formed by deforming at least a portion of the cathode and the anode.
The cathode and the anode are formed asymmetrically so that any one of the cathode and the anode can be formed wider.
The reflective surface may have an inclination of 90 degrees or more with respect to the cathode or the anode.
A portion of the cathode, the anode and the reflective surface contacting each other may be in an etched state.
A portion of the cathode and the LED chip of the anode may be etched.
It may further include an insulator between the cathode and the anode.
Material of the lead frame, the cathode and the anode and the reflective surface may include a metal or a metal alloy.
And, in order to achieve the above object, according to another embodiment of the present invention, (a) processing the lead frame, each end of which extends from the lead frame and the other end facing each other at a predetermined distance apart Processing to form a cathode and an anode together; And (b) pressing at least a portion of the front surface of the cathode and the anode to form a reflective surface.
In the step (a), by forming the cathode and the anode asymmetrically, any one of the cathode and the anode can be formed more widely.
In the step (b), the reflective surface may have an inclination of 90 degrees or more with respect to the cathode or the anode.
After the step (a) may further comprise the step of etching the cathode and the anode and the reflective surface in contact with each other.
After the step (a) may further comprise the step of etching the portion on which the LED chip of the cathode and the anode is seated.
After the step (b) may further comprise forming an insulator between the cathode and the anode.
The insulator may be formed using an injection molding method.
According to the present invention, the LED package can be composed of two simple metals, and even if the two metals are formed asymmetrically, the LED chip can be mounted directly on the metal (reflective surface). LED modules with high heat dissipation capability and thermal conductivity can be obtained.
In addition, according to the present invention, since the metal constituting the LED package also functions as a reflecting surface, high reflecting efficiency can be obtained, and a separate component for the reflecting surface is not required, thereby reducing manufacturing cost and finished product. To reduce weight.
In addition, according to the present invention, the space occupied by the plastic molding for insulation in the LED package is minimized, so that the LED chip can be mounted in a large portion on the metal, and thus excellent heat dissipation ability can be achieved. .
In addition, according to the present invention, the thickness of the portion of the LED package in contact with the cathode and the anode and the reflective surface can be reduced by half etching, thereby facilitating the deformation of the cathode and the anode for forming the reflective surface and the reflective surface. After formation, the cathode and anode warpage does not appear, thereby maximizing the contact area between the LED chip and the cathode and the anode, thereby improving heat dissipation capability of the finished product.
In addition, according to the present invention, the portion in which the LED chip is mounted in the LED package may have an appropriate roughness by half etching, thereby maximizing the contact force between the LED chip and other components.
DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.
DETAILED DESCRIPTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.
[Preferred Embodiments of the Invention]
Overall configuration of the LED package
2 is a perspective view showing the overall configuration of the LED package according to an embodiment of the present invention.
3 is an exploded perspective view of the LED package shown in FIG. 2.
4 is a front perspective view of a structure including one or more LED package according to an embodiment of the present invention.
5 and 6 show a rear perspective view of FIG. 4.
As shown in FIG. 2 to FIG. 6, an LED package according to an embodiment of the present invention includes a
The
Both
The
Meanwhile, in the
Such half etching may reduce the thickness of the portion where the
In addition, in the
This half etching allows the LED chip to be seated on the
In addition, the
As such, a part of the
Manufacturing method of LED package
Hereinafter, a manufacturing process of the LED package according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 6.
First, the shape of the
In the process, the
In this case, the
Next, half etching is performed to corrode about half of the thickness of the
The contact area between the LED chip and the
In addition, as the roughness increases, the adhesion of the LED chip on the
Next, the
A feature of the
In the present invention, since the
Meanwhile, since the
Finally, after the
LED module manufacturing
Hereinafter, a process of manufacturing an LED module using the LED package according to an embodiment of the present invention will be described briefly.
First, the LED chip is mounted on the central portion of the LED package manufactured by the above-described process. As described above, since the
After the LED chip is mounted, wire bonding is performed. Wire bonding is the process of connecting two electrodes of a lead frame (or cathode and anode) and an LED chip in an LED package. Such wire bonding is performed for the
After the wire bonding is completed, the final LED module may be completed by additionally applying a phosphor, attaching a lens, and the like according to the application field of the LED chip.
On the other hand, in the aspect of improving the productivity of the LED module, as shown in Figures 4 to 6 in the present invention, of course, a plurality of LED packages can be manufactured in a batch process.
Although the present invention has been described with reference to specific embodiments such as specific components and the like, but it is provided to help a more general understanding of the present invention, but the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations can be made from these descriptions.
Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.
1 is a view showing the configuration of a conventional LED module.
2 is a perspective view showing the overall configuration of the LED package according to an embodiment of the present invention.
3 is an exploded perspective view of the LED package shown in FIG. 2.
4 is a front perspective view of a structure including one or more LED package according to an embodiment of the present invention.
5 and 6 are rear perspective views of FIG. 4.
<Brief description of the major reference numerals>
110: lead frame
111: cathode
112: anode
120: plastic injection molding
130: reflective surface
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090003237A KR20100083907A (en) | 2009-01-15 | 2009-01-15 | Led package and method for manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090003237A KR20100083907A (en) | 2009-01-15 | 2009-01-15 | Led package and method for manufacturing the same |
Publications (1)
Publication Number | Publication Date |
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KR20100083907A true KR20100083907A (en) | 2010-07-23 |
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Family Applications (1)
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KR1020090003237A KR20100083907A (en) | 2009-01-15 | 2009-01-15 | Led package and method for manufacturing the same |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2418702A3 (en) * | 2010-08-09 | 2012-07-25 | LG Innotek Co., Ltd. | Light emitting device and lighting system having the same |
EP2947705A1 (en) * | 2014-05-23 | 2015-11-25 | Everlight Electronics Co., Ltd | Carrier, carrier leadframe, and light emitting device |
CN107346799A (en) * | 2016-05-05 | 2017-11-14 | 亿光电子工业股份有限公司 | Enclosure support structure and its manufacture method |
TWI611139B (en) * | 2014-05-23 | 2018-01-11 | 億光電子工業股份有限公司 | Light emitting device |
EP2418701B1 (en) * | 2010-08-09 | 2018-03-07 | LG Innotek Co., Ltd. | Light emitting device |
US10177292B2 (en) | 2014-05-23 | 2019-01-08 | Everlight Electronics Co., Ltd. | Carrier, carrier leadframe, and light emitting device |
-
2009
- 2009-01-15 KR KR1020090003237A patent/KR20100083907A/en not_active Application Discontinuation
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2418702A3 (en) * | 2010-08-09 | 2012-07-25 | LG Innotek Co., Ltd. | Light emitting device and lighting system having the same |
US8399904B2 (en) | 2010-08-09 | 2013-03-19 | Lg Innotek Co., Ltd. | Light emitting device and lighting system having the same |
EP2418701B1 (en) * | 2010-08-09 | 2018-03-07 | LG Innotek Co., Ltd. | Light emitting device |
US9905742B2 (en) | 2014-05-23 | 2018-02-27 | Everlight Electronics Co., Ltd. | Carrier, carrier leadframe, and light emitting device |
US9640733B2 (en) | 2014-05-23 | 2017-05-02 | Everlight Electronics Co., Ltd. | Carrier, carrier leadframe, and light emitting device |
US9691960B1 (en) | 2014-05-23 | 2017-06-27 | Everlight Electronics Co., Ltd. | Carrier, carrier leadframe, and light emitting device and method for manufacturing same |
TWI611139B (en) * | 2014-05-23 | 2018-01-11 | 億光電子工業股份有限公司 | Light emitting device |
TWI553264B (en) * | 2014-05-23 | 2016-10-11 | 億光電子工業股份有限公司 | Carrier leadframe and manufacturung method thereof and light emitting device and manufacturung method from said carrier leadframe |
EP2947705A1 (en) * | 2014-05-23 | 2015-11-25 | Everlight Electronics Co., Ltd | Carrier, carrier leadframe, and light emitting device |
CN108807644A (en) * | 2014-05-23 | 2018-11-13 | 亿光电子(中国)有限公司 | Light emitting device |
CN108922953A (en) * | 2014-05-23 | 2018-11-30 | 亿光电子(中国)有限公司 | Method for manufacturing light emitting device |
TWI644055B (en) * | 2014-05-23 | 2018-12-11 | 億光電子工業股份有限公司 | Light emitting device |
US10177292B2 (en) | 2014-05-23 | 2019-01-08 | Everlight Electronics Co., Ltd. | Carrier, carrier leadframe, and light emitting device |
TWI665406B (en) * | 2014-05-23 | 2019-07-11 | 億光電子工業股份有限公司 | Light emitting device |
US10475974B2 (en) | 2014-05-23 | 2019-11-12 | Everlight Electronics Co., Ltd. | Carrier, carrier leadframe, and light emitting device |
CN107346799A (en) * | 2016-05-05 | 2017-11-14 | 亿光电子工业股份有限公司 | Enclosure support structure and its manufacture method |
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