制作成本更低,紫外LED封装现新方案
行家说UV 导读:
行家说UV了解到,紫芯半导体(深圳)有限公司、北京智创华科半导体研究院有限公司公布了相关的紫外LED的封装方法。
具备高防硫化特性的高亮度紫外LED封装方法
紫芯半导体(深圳)有限公司公开了一种具备高防硫化特性的高亮度紫外LED封装方法,首先在支架出光杯口垂直向上的放置下,将高折射率有机硅胶通过点胶机点胶灌入支架杯内用于靠近芯片的内层封装,内层封装的高度是在至少完全可以包覆所有芯片和键合线但又低于支架出光杯口水平面之间,之后进行在温度4070℃下加热1530mi n初步凝胶的预烘烤;然后在已初步凝胶的内层封装上,直接将点胶灌入低折射率有机硅胶用作外层透镜封装;内外层封装都已灌胶成型后再将支架缓慢翻转至支架出光杯口垂直向下,以更有利于形成曲型外层透镜封装,最后是在温度100170℃条件下加热保温36h的高温固化烘烤。
在实施该方案后可制作成本更低且规模化快速地生产出曲面型高防硫化的高亮度紫外LED。
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紫外LED及紫外LED封装方法
北京智创华科半导体研究院有限公司本发明提供一种紫外LED及紫外LED封装方法,涉及LED技术领域。紫外LED包括主体部、盖合部、紫外LED芯片和液体填充部,主体部围设出容纳腔,紫外LED芯片设置在容纳腔内,容纳腔具有开口,盖合部盖设于开口,紫外LED芯片与盖合部之间具有缝隙,液体填充部设置于缝隙,液体填充部分别与盖合部以及紫外LED芯片两者浸润,液体填充部被设置为允许紫外LED芯片发出的紫外线通过。
在该紫外LED中,液体填充部中的液体在表面张力的作用下,与盖合部以及紫外LED芯片两者贴合,使得液体填充部与紫外LED芯片以及液体填充部与盖合部之间不会出现空气界面,进而减小了界面反射,以降低紫外线在射出的过程中出现损失。
来源:综合整理
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AMS Spectra、Phoseon固化有新进展
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