CN106505136A - 一种石英玻璃衬底led深紫外倒装芯片 - Google Patents

一种石英玻璃衬底led深紫外倒装芯片 Download PDF

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CN106505136A
CN106505136A CN201510562432.6A CN201510562432A CN106505136A CN 106505136 A CN106505136 A CN 106505136A CN 201510562432 A CN201510562432 A CN 201510562432A CN 106505136 A CN106505136 A CN 106505136A
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quartz glass
deep ultraviolet
flip
gan
chip
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包建敏
包晓通
章志凤
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor 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
    • H01L33/44Semiconductor 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 coatings, e.g. passivation layer or anti-reflective coating
    • H01L33/46Reflective coating, e.g. dielectric Bragg reflector
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor 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
    • H01L33/48Semiconductor 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor 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
    • H01L33/48Semiconductor 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
    • H01L33/64Heat extraction or cooling elements
    • H01L33/647Heat extraction or cooling elements the elements conducting electric current to or from the semiconductor body

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

本发明公开了一种石英玻璃衬底LED深紫外倒装芯片,利用深紫外光能透过石英玻璃的特性,让石英玻璃单面出光,另一平面上则生长深紫外GaN的LED结构层,芯片上的正电极P与负电极N,用来传热散热,进出电流及焊接热沉,石英玻璃衬底LED深紫外倒装芯片的诞生为后续产品的封装,可省掉导线架、打线、封胶等工艺,用石英玻璃做芯片透镜既保护了外延层,又提升了抗静电能力,对降氧化,延长器件的寿命都起了重要作用,采用上述倒装技术方案后,可有效提高LED芯片的热管理,且芯片可通大电流,可杜绝因金线虚焊或接触不良所引起的闪烁,解决了深紫外LED芯片的散热难,功率小,寿命短,光衰大的难题。

Description

一种石英玻璃衬底LED深紫外倒装芯片
技术领域
本发明涉及LED深紫外芯片领域,更具体地说,涉及一种石英玻璃衬底LED深紫外倒装芯片。
背景技术
随着科技技术的提升,经济的发展,生活水平的提高,人们会更加追求高品质的生活,会更加关注健康。这些需求必然会激发深紫外LED应用市场的发展,深紫外LED替代原有的应用技术和产品,有着广阔的市场,目前,众多深紫外LED产品的开发应用,面临的主要问题是LED深紫外芯片的输出功率不高,这样直接影响了产品的开发和应用;LED深紫外芯片,热管理系统设计又是一个非常重要的环节,当LED温度升高时,LED的效率和使用寿命将会迅速降低,这表明热管理不仅对深紫外LED芯片是重要的,而且在整个深紫外线杀菌消毒系统中均起到决定性的作用,而目前的深紫外LED芯片衬底一般采用蓝宝石,然而蓝宝石衬底导热效率差,要在蓝宝石衬底上生产出优质大电流大功率的深紫外LED芯片,几乎不现实,另外在蓝宝石衬底上制造LED芯片,欧姆接触的P电极和N电极只能制备在外延层的同一侧,正面射出的光相当一部分被电极和健合引线所遮挡,影响了深紫外LED芯片的工作效率。
发明内容
针对现有技术中存在的上述缺点,本发明的目的是提供一种石英玻璃衬底LED深紫外倒装芯片,其热量无需通过石英玻璃来散热,而是采用正极P与负极N来传热散热,进出电流及焊接热沉的技术方案。
为实现上述目的,本发明采用如下技术方案:
利用深紫外光能透过石英玻璃的特性,让石英玻璃单面出光,另一平面上则生长深紫外GaN基LED结构层,正极P与负极N,用来传热散热,进出电流及焊接热沉.
所述芯片工作时无需通过石英玻璃散热,石英玻璃既是深紫外GaN基LED结构层的衬底又是透镜。
所述的石英玻璃厚度是在150um至500um之间。
所述的LED深紫外倒装芯片的平面尺寸规格有5种,分别是20mil*40mil,24mil*45mil,24mil*48mil,30mil*60mil,60mil*120mil。
所述的倒装芯片正电极P和负电极N是深紫外GaN层的传热散热、进出电流及焊接热沉的接触面。
所述的倒装芯片正电极P的平面面积比负电极N的平面面积大2倍以上。
在上述技术方案中,本发明的石英玻璃衬底LED深紫外倒装芯片,包括石英玻璃层、GaN的N层、N负电极、氮化铝镓发光层、GaN的P层、反射层及P正电极。所述的石英玻璃既是倒装芯片的衬底又是倒装芯片的透镜,让石英玻璃单面出光。另一面生长深紫外GaN基LED结构层,GaN的N层生长在石英玻璃面上,氮化铝镓发光层生长在GaN的N层上,GaN的P层设置在氮化铝镓发光层上,N负电极与GaN的N层相连接,P电极与GaN的P层相连接,P电极与N电极的GaN的P层交接处设有反射层,P正电极与N负电极是用于传热散热,进出电流及焊接热沉的接触面。
采用上述倒装芯片技术,石英玻璃一面是出光面,避免了正装芯片的2个因素的光吸收,且使P、N结用来焊接热沉,降低热阻,提高了可靠性,改善了电流扩散性。反射层的设置将射向下方的深紫外线反射回出光的石英玻璃一方,进一步提高出光效率和芯片的可通电流量,实现深紫外芯片的大功率,并有效提高LED的热管理,解决了深紫外LED芯片的散热难,功率小,寿命短,光衰大的难题。
附图说明
图1是本发明石英玻璃衬底LED深紫外倒装芯片的结构剖视图。
图2是本发明石英玻璃衬底LED深紫外倒装芯片的俯视图。
图3是本发明石英玻璃衬底LED深紫外倒装芯片的正电极P与负电极N平面结构图。
具体实施方式
下面结合附图和实施例进一步说明本发明的技术方案。
请参阅图1,图2,图3,所示;
1是石英玻璃层;
2是GaN的N层;
3是GaN的P层;
4是氮化铝镓发光层;
5是反射层;
6是正电极P;
7是负电极N;
本发明石英玻璃衬底LED深紫外倒装芯片与现有技术不同的是,该芯片从上至下设置的包括石英玻璃层1、GaN的N层2、N负电极7、氮化铝镓发光层4、GaN的P层3,利用深紫外光能透过石英玻璃1的特性,石英玻璃1单面出光,另一平面上则生长深紫外GaN的LED结构层,芯片上的正电极P6与负电极N7,用来传热散热,进出电流及焊接热沉,所述的石英玻璃1既是倒装芯片的衬底又是倒装芯片的透镜,GaN的N层2生长在石英玻璃1一面上,氮化铝镓发光层4生长在GaN的N层2上,GaN的P层3设置在氮化铝镓发光层4上,N负电极7与GaN的N层2相连接,P电极6与GaN的P层3相连接,P电极6与N电极7和GaN的P层3交接处设有反射层5,P正电极6与N负电极7是用于传热散热,进出电流及焊接热沉的接触面。石英玻璃1衬底LED深紫外倒装芯片的诞生为后续产品封装,可省掉导线架、打线、封胶等工艺,用石英玻璃1做芯片透镜既保护了外延层,又提升了抗静电能力,对降氧化,延长器件的寿命都起了重要作用,采用上述倒装技术方案后,可有效提高LED芯片的热管理,且芯片可通大电流,完全没有因金线虚焊或接触不良所引起的闪烁,解决了深紫外LED芯片的散热难,功率小,寿命短,光衰大的难题。
本技术中的普通技术人员应当认识到,以上的实施例仅是用来说明本发明而并非用作为对本发明的限定,只要在本发明的实质精神范围内,对以上所述实施例的变化,变形都将落在本发明的权利要求书范围内。

Claims (6)

1.一种石英玻璃衬底LED深紫外倒装芯片,其特征在于:
包括石英玻璃层、GaN的N层、N负电极、氮化铝镓发光层、GaN的P层、反射层及P正电极,其特征在于:所述的石英玻璃既是倒装芯片的衬底又是倒装芯片的透镜,让石英玻璃单面出光,另一面生长深紫外GaN基LED结构层,GaN的N层生长在石英玻璃面上,氮化铝镓发光层生长在GaN的N层与石英玻璃平面上,GaN的P层设置在氮化铝镓发光层上,N负电极与GaN的N层相连接,P电极与GaN的P层相连接,P电极与N电极的GaN的P层交接处设有反射层,P正电极与N负电极是用于传导热,进出电流及焊接热沉的接触面。
2.如权利要求1所述的石英玻璃衬底LED深紫外倒装芯片,其特征在于:
所述LED深紫外倒装芯片工作时无需通过石英玻璃散热,石英玻璃既是深紫外发光层GaN层的衬底又是透镜。
3.如权利要求1所述的石英玻璃衬底LED深紫外倒装芯片,其特征在于:
所述的石英玻璃厚度是在150um至500um之间。
4.如权利要求1所述的石英玻璃衬底LED深紫外倒装芯片,其特征在于:
所述的LED深紫外倒装芯片的平面尺寸规格有5种,分别是,20mil*40mil,24mil*45mil,24mil*48mil,30mil*60mil,60mil*120mil。
5.如权利要求1所述的石英玻璃衬底LED深紫外倒装芯片,其特征在于:
所述的倒装芯片正电极P和负电极N是深紫外GaN层传热散热,进出电流及焊接热沉的接触面。
6.如权利要求1所述的石英玻璃衬底LED深紫外倒装芯片,其特征在于:
所述的倒装芯片正电极P的平面面积要比负电极N的平面面积大2倍以上。
CN201510562432.6A 2015-09-07 2015-09-07 一种石英玻璃衬底led深紫外倒装芯片 Pending CN106505136A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10825960B2 (en) 2018-07-10 2020-11-03 Jiangxi Litkconn Optics Institute Technology Co., LTD Single-sided light-emitting LED chips and fabrication method thereof
CN113670463A (zh) * 2021-08-03 2021-11-19 西华大学 一种白光led结温和荧光胶温度测量装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1497745A (zh) * 2002-10-16 2004-05-19 ˹̹�׵�����ʽ���� 用于车辆使用的波长转换元件
CN203826424U (zh) * 2014-03-24 2014-09-10 木林森股份有限公司 一种采用倒装led芯片的led光源

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1497745A (zh) * 2002-10-16 2004-05-19 ˹̹�׵�����ʽ���� 用于车辆使用的波长转换元件
CN203826424U (zh) * 2014-03-24 2014-09-10 木林森股份有限公司 一种采用倒装led芯片的led光源

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10825960B2 (en) 2018-07-10 2020-11-03 Jiangxi Litkconn Optics Institute Technology Co., LTD Single-sided light-emitting LED chips and fabrication method thereof
CN113670463A (zh) * 2021-08-03 2021-11-19 西华大学 一种白光led结温和荧光胶温度测量装置

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