CN104465958A - 高压白光led及其制作方法 - Google Patents
高压白光led及其制作方法 Download PDFInfo
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- CN104465958A CN104465958A CN201310434975.0A CN201310434975A CN104465958A CN 104465958 A CN104465958 A CN 104465958A CN 201310434975 A CN201310434975 A CN 201310434975A CN 104465958 A CN104465958 A CN 104465958A
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 238000005538 encapsulation Methods 0.000 abstract description 4
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- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
- H01L33/504—Elements with two or more wavelength conversion materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/64—Heat extraction or cooling elements
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
Abstract
本发明公开了一种高压白光LED及其制作方法,所述LED芯片为高压蓝光芯片。LED芯片内部采用串联方式,减少了封装成本和灯具的元件数和焊点数,提高了可靠性,充分利用电压用较小的电流达到大的功率输出,发热量更小,更节电,响应了国家节能环保的发展方针。可广泛应用于球泡灯、管灯、射灯、筒灯等系列LED灯具灯饰上。
Description
技术领域:
本发明涉及一种高压白光LED及其制作方法。
背景技术:
随着LED芯片的功率密度越来越大,多芯片、功率型封装需求进一步增加,对LED封装方案的散热性能提出了更高要求。高压驱动、交流驱动等新型技术的出现,也令传统平面式电气互联封装方案面临窘境。而越来越广的应用场合,对LED封装提出了更多更细的要求,对LED器件的集成度、系统化要求也越来越高,功能化要求日益突出。早在过去就有各种集成的LED,以不同数量的LED串并联起来,得到各种不同功率和电压的LED。最早推出集成LED是美国的普瑞公司,把很多小功率LED在基板上串并联起来,以得到一颗大功率LED。
目前,市场上对高压照明元器件有一定的需求,然而对于封装领域,多芯串联采取的焊线方式,增加了产品失效的几率。HV LED和这种集成LED的主要差别在于,HV LED是全部串联,而集成LED则是串并联。同时,HV LED通常以单颗1W的形式进行贴片组装,集成LED单颗一般做到几瓦到上百瓦。使用单颗高压芯片封装形式得到HV LED元器件无疑是未来高压产品的方向。
发明内容:
本方法所要解决的技术问题是提供一种高压白光LED元器件及其制作方法。
该制作方法的主要优点:
1、HV LED减小了封装成本;HV LED减少了元件数和焊点数,提高了可靠性。
2、节省变压器能量转换的损耗及降低成本。
3、除了高电压直流的应用外,利用外部桥式整流电路也可设计于交流下操作。
4、体积小不占空间,对封装及光学设计都具有极佳的运用弹性。
具体实施方式:如图示,在支架1上固定高压蓝光晶片2,采用绿色荧光粉与红色荧光粉以一定比例混合3与UV固化胶水4充分混合形成荧光胶体,在UV光5照射下激活并初步固化,再经二次烘烤成型后,得低色容差、高显色性的白光产品。
附图说明
图中所示是本发明荧光胶混合后填充图。
图中:1、透明支架;2、晶片;3、荧光粉;4、UV-固化胶水;5、UV光。
图1a是本发明荧光胶混合后填充俯视图;图1b是本发明荧光胶混合后填充切面图。
Claims (2)
1.使用的芯片为1 5V左右单芯高压LED蓝光芯片,其主波长为455nm左右。使用的荧光粉为绿粉(G)受蓝光激发发射出波长530 nm左右的绿光;红色荧光粉(R)受蓝光激发发射出635 nm左右的红光。使用支架为EMC材料的散热性支架。
2.采用“绿粉+红粉”组合与UV胶水一起混合后,填充高压蓝色芯片上,固化后得高显值白光LED元器件。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104835898A (zh) * | 2015-04-28 | 2015-08-12 | 江苏稳润光电有限公司 | 一种无光斑白光led及其制作方法 |
CN106328638A (zh) * | 2016-10-31 | 2017-01-11 | 佛山市中昊光电科技有限公司 | 一种cob光源 |
-
2013
- 2013-09-17 CN CN201310434975.0A patent/CN104465958A/zh active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104835898A (zh) * | 2015-04-28 | 2015-08-12 | 江苏稳润光电有限公司 | 一种无光斑白光led及其制作方法 |
CN106328638A (zh) * | 2016-10-31 | 2017-01-11 | 佛山市中昊光电科技有限公司 | 一种cob光源 |
EP3316298B1 (en) * | 2016-10-31 | 2021-08-11 | Foshan Evercore Optoelectronic Technology Co.,Ltd. | Cob light source |
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