CN203205387U - 一种劈刀结构 - Google Patents

一种劈刀结构 Download PDF

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Publication number
CN203205387U
CN203205387U CN201320198889XU CN201320198889U CN203205387U CN 203205387 U CN203205387 U CN 203205387U CN 201320198889X U CN201320198889X U CN 201320198889XU CN 201320198889 U CN201320198889 U CN 201320198889U CN 203205387 U CN203205387 U CN 203205387U
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China
Prior art keywords
wedge
chopper
projection
wire
model
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Expired - Lifetime
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CN201320198889XU
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English (en)
Inventor
李明芬
陈益新
李付成
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Changjiang Electronics Technology (suqian) Co Ltd
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Changjiang Electronics Technology (suqian) Co Ltd
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Priority to CN201320198889XU priority Critical patent/CN203205387U/zh
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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
    • H01L2224/484Connecting portions
    • H01L2224/48455Details of wedge bonds
    • H01L2224/48456Shape
    • 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
    • H01L2224/74Apparatus for manufacturing arrangements for connecting or disconnecting semiconductor or solid-state bodies and for methods related thereto
    • H01L2224/78Apparatus for connecting with wire connectors
    • H01L2224/7825Means for applying energy, e.g. heating means
    • H01L2224/783Means for applying energy, e.g. heating means by means of pressure
    • H01L2224/78313Wedge
    • H01L2224/78314Shape
    • H01L2224/78315Shape of the pressing surface, e.g. tip or head

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  • Wire Bonding (AREA)

Abstract

本实用新型涉及一种劈刀结构,属于半导体封装技术领域。它包括劈刀主体(1),所述劈刀主体(1)前端为劈刀嘴(4),所述劈刀嘴(4)上开设有焊线槽(5),所述焊线槽(5)内设置有凸起(6)。本实用新型一种劈刀结构,打线过程中劈刀能够抓牢金属线,能够解决半导体打线金属线与芯片或引线框架结合不牢的问题,提高了打线的稳定性。

Description

一种劈刀结构
技术领域
本实用新型涉及一种劈刀结构,属于半导体封装技术领域。
背景技术
集成电路或分立器件打线(wire bonding)传统的打线方式为:利用劈刀(wedge,bonding-tool)将焊线压在压焊区上,通过超声波将金属线与芯片的压焊区固定在一起。该种工艺下,传统的劈刀焊线槽内无凸起,劈刀带动金属线的摩擦力由劈刀与金属线之间的摩擦系数决定,摩擦力较小,导致金属线与芯片或引线框架(lead frame)结合不牢,极易发生质量异常。因此,针对上述困难,有必要对现有技术中的劈刀进行创新。
发明内容                                            
本实用新型的目的在于克服上述不足,提供一种劈刀结构,在打线过程中劈刀能够抓牢金属线,使金属线与芯片或引线框架结合牢固。 
本实用新型的目的是这样实现的:一种劈刀结构,它包括劈刀主体,所述劈刀主体前端为劈刀嘴,所述劈刀嘴上开设有焊线槽,所述焊线槽内设置有凸起。
所述凸起的数量为1个或1个以上。
所述凸起的截面形状为球形、梯形、方形、椭圆形、圆弧形或者至少上述两种截面形状的组合。
所述凸起的高度为10μm以上。
与现有技术相比,本实用新型具有以下有益效果:
本实用新型一种劈刀结构,打线过程中劈刀能够抓牢金属线,能够解决半导体打线金属线与芯片或引线框架结合不牢的问题,提高了打线的稳定性。
附图说明
图1为本实用新型一种劈刀结构实施例一的结构示意图。
图2为图1中劈刀嘴部分的放大图。
图3为图1的左视图。
图4为现有技术劈刀打线的使用状态示意图。
图5为本实用新型一种劈刀结构实施例一的使用状态示意图。
图6~图9为本实用新型一种劈刀结构的另外四种实施例的结构示意图。
其中:
劈刀主体1
金属线2
芯片3
劈刀嘴4
焊线槽5
凸起6。
具体实施方式
参见图1~图3、图5,本实用新型一种劈刀结构,它包括劈刀主体1,所述劈刀主体1前端为劈刀嘴4,所述劈刀嘴4上开设有焊线槽5,所述焊线槽5内设置有凸起6。
在本实施例中,焊线槽内凸起数量为1个。
在本实施例中,焊线槽内凸起的截面形状为球形。
在本实施例中,焊线槽内凸起的高度为10μm以上。
参见图6~图9,所述焊线槽5内设置有2个或2个以上凸起6,凸起6的截面形状为梯形、方形、椭圆形、圆弧形或者至少上述两种截面形状的组合,2个凸起之间的间距、凸起高度可以根据具体要求调整。

Claims (4)

1.一种劈刀结构,它包括劈刀主体(1),所述劈刀主体(1)前端为劈刀嘴(4),所述劈刀嘴(4)上开设有焊线槽(5),其特征在于:所述焊线槽(5)内设置有凸起(6)。
2.根据权利要求1所述的一种劈刀结构,其特征在于:所述凸起(6)的数量为1个或1个以上。
3.根据权利要求2所述的一种劈刀结构,其特征在于:所述凸起(6)的截面形状为球形、梯形、方形、椭圆形、圆弧形或者至少上述两种截面形状的组合。
4.根据权利要求2或3所述的一种劈刀结构,其特征在于:所述凸起(6)的高度为10μm以上。
CN201320198889XU 2013-04-19 2013-04-19 一种劈刀结构 Expired - Lifetime CN203205387U (zh)

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CN201320198889XU CN203205387U (zh) 2013-04-19 2013-04-19 一种劈刀结构

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CN201320198889XU CN203205387U (zh) 2013-04-19 2013-04-19 一种劈刀结构

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110303208A (zh) * 2019-06-28 2019-10-08 成都精蓉创科技有限公司 微电子微连接深腔焊劈刀的加工工艺

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110303208A (zh) * 2019-06-28 2019-10-08 成都精蓉创科技有限公司 微电子微连接深腔焊劈刀的加工工艺
CN110303208B (zh) * 2019-06-28 2020-09-11 成都精蓉创科技有限公司 微电子微连接深腔焊劈刀的加工工艺

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Granted publication date: 20130918

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