CN205789966U - 一种cob光源 - Google Patents

一种cob光源 Download PDF

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Publication number
CN205789966U
CN205789966U CN201620510791.7U CN201620510791U CN205789966U CN 205789966 U CN205789966 U CN 205789966U CN 201620510791 U CN201620510791 U CN 201620510791U CN 205789966 U CN205789966 U CN 205789966U
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Prior art keywords
radiating substrate
heat
light source
support
luminescence chip
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Expired - Fee Related
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CN201620510791.7U
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张祥宇
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Hunan Wei Xing Xinxin Photoelectric Technology Co Ltd
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Hunan Wei Xing Xinxin Photoelectric Technology Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means 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
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48135Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip
    • H01L2224/48137Connecting between different semiconductor or solid-state bodies, i.e. chip-to-chip the bodies being arranged next to each other, e.g. on a common substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/73Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732Location after the connecting process
    • H01L2224/73251Location after the connecting process on different surfaces
    • H01L2224/73265Layer and wire connectors

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Abstract

本实用新型涉及照明技术领域,尤其涉及一种COB光源,包括散热基板、支架、发光芯片组、引线和荧光胶,所述散热基板设有相互绝缘的正极端和负极端,所述发光芯片组通过硅胶固设在所述散热基板上,所述发光芯片组通过引线与所述正极端和负极端电性连接,所述荧光胶覆盖于所述发光芯片组上和所述支架内,所述支架呈环形,所述散热基板穿设在所述支架中,所述散热基板的正极端和负极端伸出所述支架。该光源稳固性好。

Description

一种COB光源
技术领域
本实用新型涉及照明技术领域,尤其涉及一种COB(chip on board,板上晶片直装式)光源。
背景技术
半导体照明技术是21世纪最具有发展前景的高科技领域之一,而LED(Light Emitting Diode,发光二极管)是其核心技术。LED是一类能直接将电能转化为光能的发光元件,由于它具有工作电压低、耗电量小、发光效率高、发光响应时间极短、光色纯、结构牢固、抗冲击、耐振动、性能稳定可靠、重量轻、体积少和成本低等一系列特性,因而得到了广泛的应用和突飞猛进的发展。
随着功率型白光LED制造技术的不断完善,其发光效率、亮度和功率都有了大幅度提高。为了制造出高性能、高功率型白光LED器件,对芯片制造技术、荧光粉制造技术和散热技术要求很高。
经常使用的一种为COB光源就是将裸芯片用导电或非导电胶粘附在互连基板上,然后进行引线键合实现其电连接。
由于当前的COB封装延续采用了传统的封装模式,支架通过热处理粘接在散热基板上,芯片通过硅胶粘接在散热基板上,随着时间的推移,容易出现胶裂现象,散热基板与支架、芯片容易脱离,导致结构不稳定,容易出现光衰和死灯现象,另外,引线是焊接在散热基板上,焊接耗时耗力,增加成本。
实用新型内容
本实用新型所要解决的技术问题是提供一种稳定性高的的COB光源。
本实用新型是这样实现的:
一种COB光源,包括散热基板、支架、发光芯片组、引线和荧光胶,所述散热基板设有相互绝缘的正极端和负极端,所述发光芯片组通过硅胶固设在所述散热基板上,所述发光芯片组通过引线与所述正极端和负极端电性连接,所述荧光胶覆盖于所述发光芯片组上和所述支架内,所述支架呈环形,所述散热基板穿设在所述支架中,所述散热基板的正极端和负极端伸出所述支架。
进一步的,所述支架为EMC支架。
进一步的,所述散热基板上设有若干凹槽,所述发光芯片组位于所述凹槽中。
进一步的,所述凹槽设在所述散热基板的正极端中。
进一步的,所述硅胶外侧环形设有EMC加固层。
进一步的,所述散热基板的正极端和负极端被EMC材质绝缘条隔开。
进一步的,所述散热基板上设有引线孔,所述引线穿设在所述引线孔中,所述引线孔两侧引线通过EMC固设在散热基板上。
进一步的,所述引线为金丝。
本实用新型与现有技术相比,有益效果在于:该光源中,散热基板穿设在支架中,在原有热处理连接的基础上增加了一个稳固结构,使得散热基板和支架不易脱离,稳固性好。
附图说明
图1:本实用新型实施例的结构示意图;
图2:图1实施例另一角度结构示意图。
图中:1-散热基板 2-支架 3-发光芯片组 4-引线 5-荧光胶 6-硅胶7-绝缘条 8-加固层 9-凹槽
具体实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本实用新型进行进一步详细说明。
如图1和图2所示,为本实用新型一较佳实施例,一种COB光源,包括散热基板1、支架2、发光芯片组3、引线4和荧光胶5。散热基板1设有相互绝缘的正极端和负极端,发光芯片组3通过硅胶6固设在散热基板1上,发光芯片组3通过引线4与正极端和负极端电性连接,荧光胶5覆盖于发光芯片组3上和支架2内。支架2呈环形,散热基板1穿设在支架2中,散热基板1的正极端和负极端伸出支架2。
具体地,支架2为EMC支架2。散热基板1上设有若干凹槽9,发光芯片组3位于凹槽9中。凹槽9设在散热基板1的正极端中。硅胶6外侧环形设有EMC加固层8。散热基板1的正极端和负极端被EMC材质绝缘条7隔开。散热基板1上设有引线孔(图中未示出),引线4穿设在引线孔中,引线孔两侧引线4通过EMC固设在散热基板1上。引线4为金丝。
该光源中,散热基板1穿设在支架2中,在原有热处理连接的基础上增加了一个稳固结构,使得散热基板1和支架2不易脱离,硅胶6外侧环形设置的EMC加固层8,辅助硅胶6起到加固作用,防止硅胶6出现劽胶现象后导致的散热基板1和发光芯片组3脱离现象,引线4穿设在散热基板1中,不用焊接处理,减少了人力物力,通过EMC固定不易脱落,该光源稳固性好、产品品质高。
以上所述仅为本实用新型的较佳实施例而已,并不用以限制本实用新型,凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本实用新型的保护范围之内。

Claims (8)

1.一种COB光源,包括散热基板、支架、发光芯片组、引线和荧光胶,所述散热基板设有相互绝缘的正极端和负极端,所述发光芯片组通过硅胶固设在所述散热基板上,所述发光芯片组通过引线与所述正极端和负极端电性连接,所述荧光胶覆盖于所述发光芯片组上和所述支架内,其特征在于:所述支架呈环形,所述散热基板穿设在所述支架中,所述散热基板的正极端和负极端伸出所述支架。
2.根据权利要求1所述的一种COB光源,其特征在于:所述支架为EMC支架。
3.根据权利要求1所述的一种COB光源,其特征在于:所述散热基板上设有若干凹槽,所述发光芯片组位于所述凹槽中。
4.根据权利要求3所述的一种COB光源,其特征在于:所述凹槽设在所述散热基板的正极端中。
5.根据权利要求1所述的一种COB光源,其特征在于:所述硅胶外侧环形设有EMC加固层。
6.根据权利要求1所述的一种COB光源,其特征在于:所述散热基板的正极端和负极端被EMC材质绝缘条隔开。
7.根据权利要求1所述的一种COB光源,其特征在于:所述散热基板上设有引线孔,所述引线穿设在所述引线孔中,所述引线孔两侧引线通过EMC固设在散热基板上。
8.根据权利要求1所述的一种COB光源,其特征在于:所述引线为金丝。
CN201620510791.7U 2016-05-31 2016-05-31 一种cob光源 Expired - Fee Related CN205789966U (zh)

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