CN109671833B - 一种倒装cob及其制造方法 - Google Patents
一种倒装cob及其制造方法 Download PDFInfo
- Publication number
- CN109671833B CN109671833B CN201811537081.3A CN201811537081A CN109671833B CN 109671833 B CN109671833 B CN 109671833B CN 201811537081 A CN201811537081 A CN 201811537081A CN 109671833 B CN109671833 B CN 109671833B
- Authority
- CN
- China
- Prior art keywords
- layer
- substrate
- chip
- aluminum oxide
- cob
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000758 substrate Substances 0.000 claims abstract description 59
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 229910052709 silver Inorganic materials 0.000 claims description 11
- 239000004332 silver Substances 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 238000002310 reflectometry Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Classifications
-
- 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
- H01L33/483—Containers
- H01L33/486—Containers adapted for surface mounting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- 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
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
-
- 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
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0058—Processes relating to semiconductor body packages relating to optical field-shaping elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/0066—Processes relating to semiconductor body packages relating to arrangements for conducting electric current to or from the semiconductor body
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Led Device Packages (AREA)
Abstract
一种倒装COB及其制造方法,包括基板、设在基板上的线路层和LED芯片,所述基板从下往上依次包括铝基层、第一三氧化二铝层、二氧化钛层、银层和透明绝缘层,所述透明绝缘层为第二三氧化二铝层;所述线路层设在第二三氧化二铝层上,所述LED芯片为倒装LED芯片,所述倒装LED芯片固在第二三氧化二铝层上,且倒装LED芯片底部的电极与线路层电性连接。本发明的基板相当于镜面铝基板,其反射率高,可以有效的将倒装芯片底部的出光反射出去,从而提高COB的出光效率;本发明在基板的顶面增加了加厚的三氧化二铝层,三氧化二铝为透明结构,且一定厚度下能够绝缘,所以能够将线路层座在三氧化二铝层上,即可实现绝缘,又可使光线穿透进行反射。
Description
技术领域
本发明涉及LED领域,尤其是一种倒装COB及其制造方法。
背景技术
随着LED(LightEmittingDiode,发光二极管)技术的发展,其在照明行业中广泛应用的同时,市场对LED的亮度、可靠性、安装便捷性等提出更高要求,这样COB(ChipOnBoard,芯片集成到基板)的封装形式便应运而生。目前比较成熟的是正装结构的COB,将正装芯片固定在基板上,使用金线(或合金线)完成芯片间和芯片与基板线路间的电气连接,再涂覆含有荧光粉的荧光胶合成需要的光色及保护内部器件,这种结构的COB缺点非常明显:容易断线死灯、耐温低、功率密度低、固晶(将芯片贴装在基板上)工艺耗时长等。
为解决正装COB存在的问题,市面上也出现倒装COB,其COB基板包括基材层、上绝缘层、线路层、镀金层和阻焊层,基材层、上绝缘层和线路层从下至上依次设置,该种基板的表面反射率低,倒装芯片底部出光无法有效利用,导致整个倒装COB的出光效率偏低。
发明内容
本发明所要解决的技术问题是提供一种倒装COB及其制造方法,能够提高倒装COB的出光效率。
为解决上述技术问题,本发明的技术方案是:一种倒装COB,包括基板、设在基板上的线路层和LED芯片,所述基板从下往上依次包括铝基层、第一三氧化二铝层、二氧化钛层、银层和透明绝缘层,所述透明绝缘层为第二三氧化二铝层;所述线路层设在第二三氧化二铝层上,所述LED芯片为倒装LED芯片,所述倒装LED芯片固在第二三氧化二铝层上,且倒装LED芯片底部的电极与线路层电性连接。本发明的基板相当于镜面铝基板,其反射率高,可以有效的将倒装芯片底部的出光反射出去,从而提高COB的出光效率;本发明在基板的顶面增加了加厚的三氧化二铝层,三氧化二铝为透明结构,且一定厚度下能够绝缘,所以能够将线路层座在三氧化二铝层上,即可实现绝缘,又可使光线穿透进行反射。
作为改进,所述线路层包括烧结银层和设在烧结银层上的沉金层。
作为改进,所述基板上沿其边缘设有围堰,所述倒装LED芯片设在所述围堰内,且所述围堰内设有将倒装LED芯片覆盖的荧光胶体。
作为改进,围堰内设有若干相互并联的LED串联支路,每条LED串联支路由若干倒装LED芯片串联而成。
作为改进,所述线路层包括设在基板两侧且位于围堰底部的集电线路,其中一侧的集电线路与COB的正极连接,另一侧的集电线路与COB的负极连接,所述LED串联支路的两端分别与两侧人的集电线路连接。
本发明的制造方法,包括以下步骤:
(1)制作基板;
(2)在基板上固晶焊线;
(3)在基板上做围堰;
(4)在围堰内点荧光胶;
其中制造基板的具体步骤包括:
(1.1)将纳米氧化铝透明液体和胶水均匀混合后,喷涂在镜面铝基材上进行固化处理;
(1.2)液体挥发后在镜面铝基材的顶面形成第二三氧化二铝层,第二三氧化二铝层与镜面铝基材结合形成 基板,所述镜面铝基材下往上依次包括铝基层、第一三氧化二铝层、二氧化钛层、银层。
本发明与现有技术相比所带来的有益效果是:
本发明的基板相当于镜面铝基板,其反射率高,可以有效的将倒装芯片底部的出光反射出去,从而提高COB的出光效率;本发明在基板的顶面增加了加厚的三氧化二铝层,三氧化二铝为透明结构,且一定厚度下能够绝缘,所以能够将线路层座在三氧化二铝层上,即可实现绝缘,又可使光线穿透进行反射。
附图说明
图1为基板局部剖视图。
图2为倒装COB俯视图。
具体实施方式
下面结合说明书附图对本发明作进一步说明。
如图1所示,一种倒装COB,包括基板1、设在基板1上的线路层2和LED芯片7。所述基板1从下往上依次包括铝基层11、第一三氧化二铝层12、二氧化钛层13、银层14和透明绝缘层15。所述透明绝缘层15为第二三氧化二铝层,第二三氧化二铝层的厚度为500-600nm,该厚度下的三氧化铝不仅透光,而且具有绝缘性能。所述线路层2设在第二三氧化二铝层上,所述线路层2包括烧结银层21和设在烧结银层21上的沉金层22,线路沉金可以抗硫化和增加导电率。所述LED芯片7为倒装LED芯片,所述倒装LED芯片固在第二三氧化二铝层上,且倒装LED芯片底部的电极与线路层2电性连接。
如图2所示,所述基板1上沿其边缘设有围堰5,所述倒装LED芯片设在所述围堰5内,且所述围堰5内设有将倒装LED芯片覆盖的荧光胶体。围堰5内设有若干相互并联的LED串联支路6,每条LED串联支路6由若干倒装LED芯片串联而成;所述线路层2包括设在基板1两侧且位于围堰5底部的集电线路23,其中一侧的集电线路23与COB的正极3连接,另一侧的集电线路23与COB的负极4连接,所述LED串联支路6的两端分别与两侧人的集电线路23连接。
本发明的制造方法,包括以下步骤:
(1)制作基板;
(2)在基板上固晶焊线;
(3)在基板上做围堰;
(4)在围堰内点荧光胶。
其中制造基板的具体步骤包括:
(1.1)将纳米氧化铝透明液体和胶水均匀混合后,喷涂在镜面铝基材上进行固化处理;
(1.2)液体挥发后在镜面铝基材的顶面形成第二三氧化二铝层,第二三氧化二铝层与镜面铝基材结合形成 基板,所述镜面铝基材下往上依次包括铝基层、第一三氧化二铝层、二氧化钛层、银层。
本发明的基板1相当于镜面铝基板1,其反射率高,可以有效的将倒装芯片底部的出光反射出去,从而提高COB的出光效率;本发明在基板1的顶面增加了加厚的三氧化二铝层,三氧化二铝为透明结构,且一定厚度下能够绝缘,所以能够将线路层2座在三氧化二铝层上,即可实现绝缘,又可使光线穿透进行反射。
Claims (6)
1.一种倒装COB,包括基板、设在基板上的线路层和LED芯片,其特征在于:所述基板从下往上依次包括铝基层、第一三氧化二铝层、二氧化钛层、银层和透明绝缘层,所述透明绝缘层为第二三氧化二铝层;所述线路层设在第二三氧化二铝层上,所述LED芯片为倒装LED芯片,所述倒装LED芯片固设在第二三氧化二铝层上,且倒装LED芯片底部的电极与线路层电性连接;第二三氧化二铝的厚度为500-600nm。
2.根据权利要求1所述的一种倒装COB,其特征在于:所述线路层包括烧结银层和设在烧结银层上的沉金层。
3.根据权利要求1所述的一种倒装COB,其特征在于:所述基板上沿其边缘设有围堰,所述倒装LED芯片设在所述围堰内,且所述围堰内设有将倒装LED芯片覆盖的荧光胶体。
4.根据权利要求3所述的一种倒装COB,其特征在于:围堰内设有若干相互并联的LED串联支路,每条LED串联支路由若干倒装LED芯片串联而成。
5.根据权利要求4所述的一种倒装COB,其特征在于:所述线路层包括设在基板两侧且位于围堰底部的集电线路,其中一侧的集电线路与COB的正极连接,另一侧的集电线路与COB的负极连接,所述LED串联支路的两端分别与两侧的集电线路连接。
6.一种如权利要求1所述倒装COB的制造方法,其特征在于,包括以下步骤:
(1)制作基板;
(2)在基板上固晶焊线;
(3)在基板上做围堰;
(4)在围堰内点荧光胶;
其中制造基板的具体步骤包括:
(1.1)将纳米氧化铝透明液体和胶水均匀混合后,喷涂在镜面铝基材上进行固化处理;
(1.2)液体挥发后在镜面铝基材的顶面形成第二三氧化二铝层,第二三氧化二铝层与镜面铝基材结合形成基板,所述镜面铝基材从下往上依次包括铝基层、第一三氧化二铝层、二氧化钛层、银层。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811537081.3A CN109671833B (zh) | 2018-12-14 | 2018-12-14 | 一种倒装cob及其制造方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811537081.3A CN109671833B (zh) | 2018-12-14 | 2018-12-14 | 一种倒装cob及其制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109671833A CN109671833A (zh) | 2019-04-23 |
CN109671833B true CN109671833B (zh) | 2020-06-05 |
Family
ID=66143899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811537081.3A Active CN109671833B (zh) | 2018-12-14 | 2018-12-14 | 一种倒装cob及其制造方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109671833B (zh) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003004919A (ja) * | 2001-06-21 | 2003-01-08 | Canon Inc | 高反射ミラー |
CN204130588U (zh) * | 2014-07-18 | 2015-01-28 | 惠州雷通光电器件有限公司 | 一种无封装芯片的cob光源 |
CN107706280A (zh) * | 2016-08-08 | 2018-02-16 | 深圳市斯迈得半导体有限公司 | 一种通过真空溅射技术制造的led光源的制造方法 |
CN107256918A (zh) * | 2017-06-30 | 2017-10-17 | 浙江瑞丰光电有限公司 | 一种led支架及其制备方法和一种led器件 |
-
2018
- 2018-12-14 CN CN201811537081.3A patent/CN109671833B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN109671833A (zh) | 2019-04-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN203277485U (zh) | 发光装置、用于形成多方向出光的发光二极管芯片及其蓝宝石基板 | |
CN103579440B (zh) | 发光二极管结构 | |
TW201101548A (en) | LED package structure with a plurality of standby pads for increasing wire-bonding yield and method for manufacturing the same | |
CN106972092B (zh) | 一种高发光效率的量子点白光led及其制备方法 | |
CN104465895A (zh) | Led芯片及其制作方法 | |
TW200939450A (en) | LED chip package structure manufacturing method for preventing light-emitting efficiency of fluorescent powder from being decreased due to high temperature | |
CN102593304A (zh) | 一种使用陶瓷散热的高功率led灯具 | |
CN101859865B (zh) | 一种大功率白光led器件的无金线封装方法及白光led器件 | |
TWI416993B (zh) | 交流電發光二極體模組及其應用之光源裝置與其製造方法 | |
CN109671833B (zh) | 一种倒装cob及其制造方法 | |
CN107305922B (zh) | 一种带电源一体化360度立体发光光源的制备方法 | |
CN207134383U (zh) | 一种大功率led芯片 | |
CN201893369U (zh) | 一种发光二极管 | |
CN203481264U (zh) | 一种白光led芯片 | |
CN207967048U (zh) | 一种基于高压倒装芯片的led光源 | |
CN205028918U (zh) | 一种led支架及led封装体 | |
CN204257641U (zh) | 具透光平板的发光装置 | |
CN202268386U (zh) | 一种led封装结构 | |
CN206992109U (zh) | 一种户外大间距led器件及led显示屏 | |
CN203377265U (zh) | 一种led封装结构 | |
CN202678310U (zh) | 基于cob技术封装的大功率led集成阵列照明光源 | |
CN110649006A (zh) | 一种高功率密度cob器件 | |
CN207909874U (zh) | 一种倒装自整流360°发光led | |
CN206505946U (zh) | 一种高光效的led光源 | |
CN201448717U (zh) | 集成化封装的机动车led车灯 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |