CN212750881U - 半导体功率器件 - Google Patents

半导体功率器件 Download PDF

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CN212750881U
CN212750881U CN202021457834.2U CN202021457834U CN212750881U CN 212750881 U CN212750881 U CN 212750881U CN 202021457834 U CN202021457834 U CN 202021457834U CN 212750881 U CN212750881 U CN 212750881U
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chip
pin
packaging body
main part
epoxy packaging
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吴炆皜
何洪运
沈加勇
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Suzhou Goodark Electronics Co ltd
Suzhou Good Ark Electronics Co Ltd
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Suzhou Goodark Electronics Co ltd
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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
    • H01L2224/26Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
    • H01L2224/31Structure, shape, material or disposition of the layer connectors after the connecting process
    • H01L2224/32Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
    • H01L2224/321Disposition
    • H01L2224/32151Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/32221Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/32245Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • 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
    • H01L2224/34Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
    • H01L2224/39Structure, shape, material or disposition of the strap connectors after the connecting process
    • H01L2224/40Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
    • H01L2224/401Disposition
    • H01L2224/40151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/40221Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/40245Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181Encapsulation

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Abstract

本实用新型公开一种半导体功率器件,包括由环氧封装体包覆的芯片基板、芯片和连接片,所述连接片的下表面自环氧封装体中裸露出,所述芯片的一表面与此连接片的上表面焊接连接,所述芯片的另一表面与连接片的一端连接,所述连接片进一步包括与芯片连接的连接主体和一端自环氧封装体内伸出的引脚,所述引脚靠近连接主体一端的前、后两侧边缘处分别具有一向上的折弯部,从而在两个折弯部与引脚上表面之间形成一凹陷区,所述连接主体的一端嵌入此凹陷区内,并与引脚上表面焊接连接。本实用新型既降低了芯片的热应力,又提高了引脚与连接主体之间位置精度和连接强度,进一步提高了产品在严苛环境下的稳定性、延长其使用寿命。

Description

半导体功率器件
技术领域
本实用新型涉及半导体封装领域,特别涉及一种半导体功率器件。
背景技术
7KW左右的大功率TVS产品主要用于车载电控单元的瞬态浪涌电流保护,对产品的可靠性及功率密度要求较高。现有产品的结构应力较大,对于大尺寸芯片,在严苛的使用条件下,有芯片受应力损伤的风险。
实用新型内容
本实用新型目的是提供一种半导体功率器件,该半导体功率器件既降低了芯片的热应力,又提高了引脚与连接主体之间位置精度和连接强度,进一步提高了产品在严苛环境下的稳定性、延长其使用寿命。
为达到上述目的,本实用新型采用的技术方案是:一种半导体功率器件,包括由环氧封装体包覆的芯片基板、芯片和连接片,所述连接片的下表面自环氧封装体中裸露出,所述芯片的一表面与此连接片的上表面焊接连接,所述芯片的另一表面与连接片的一端连接,所述连接片的另一端自环氧封装体内延伸出;
所述连接片进一步包括与芯片连接的连接主体和一端自环氧封装体内伸出的引脚,所述引脚靠近连接主体一端的前、后两侧边缘处分别具有一向上的折弯部,从而在两个折弯部与引脚上表面之间形成一凹陷区,所述连接主体的一端嵌入此凹陷区内,并与引脚上表面焊接连接。
上述技术方案中进一步改进的方案如下:
1. 上述方案中,所述芯片基板与芯片连接的表面上设置有一镀镍层。
由于上述技术方案运用,本实用新型与现有技术相比具有下列优点和效果:
本实用新型半导体功率器件,其引脚靠近连接主体一端的前、后两侧边缘处分别具有一向上的折弯部,从而在两个折弯部与引脚上表面之间形成一凹陷区,所述连接主体的一端嵌入此凹陷区内,并与引脚上表面焊接连接,通过连接片结构的设置,既降低了芯片的热应力,又提高了引脚与连接主体之间位置精度和连接强度,进一步提高了产品在严苛环境下的稳定性、延长其使用寿命。
附图说明
附图1为本实用新型半导体功率器件结构示意图;
附图2为图1中A-A向剖视图;
附图3为本实用新型半导体功率器件结构侧剖图。
以上附图中:1、环氧封装体;2、芯片基板;3、芯片;4、连接片;5、连接主体;6、引脚;7、折弯部;8、凹陷区。
具体实施方式
下面结合附图及实施例对本实用新型作进一步描述:
实施例1:一种半导体功率器件,包括由环氧封装体1包覆的芯片基板2、芯片3和连接片4,所述连接片4的下表面自环氧封装体1中裸露出,所述芯片3的一表面与此连接片4的上表面焊接连接,所述芯片3的另一表面与连接片4的一端连接,所述连接片4的另一端自环氧封装体1内延伸出;
所述连接片4进一步包括与芯片3连接的连接主体5和一端自环氧封装体1内伸出的引脚6,所述引脚6靠近连接主体5一端的前、后两侧边缘处分别具有一向上的折弯部7,从而在两个折弯部7与引脚6上表面之间形成一凹陷区8,所述连接主体5的一端嵌入此凹陷区8内,并与引脚6上表面焊接连接。
实施例2:一种半导体功率器件,包括由环氧封装体1包覆的芯片基板2、芯片3和连接片4,所述连接片4的下表面自环氧封装体1中裸露出,所述芯片3的一表面与此连接片4的上表面焊接连接,所述芯片3的另一表面与连接片4的一端连接,所述连接片4的另一端自环氧封装体1内延伸出;
所述连接片4进一步包括与芯片3连接的连接主体5和一端自环氧封装体1内伸出的引脚6,所述引脚6靠近连接主体5一端的前、后两侧边缘处分别具有一向上的折弯部7,从而在两个折弯部7与引脚6上表面之间形成一凹陷区8,所述连接主体5的一端嵌入此凹陷区8内,并与引脚6上表面焊接连接。
所述芯片基板2与芯片3连接的表面上设置有一镀镍层,既提高了导通性能以及高温环境下导通性能的稳定性,又可避免芯片基板与芯片之间的结合强度过低而导致的虚焊。
采用上述半导体功率器件时,其通过连接片结构的设置,既降低了芯片的热应力,又提高了引脚与连接主体之间位置精度和连接强度,进一步提高了产品在严苛环境下的稳定性、延长其使用寿命。
上述实施例只为说明本实用新型的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本实用新型的内容并据以实施,并不能以此限制本实用新型的保护范围。凡根据本实用新型精神实质所作的等效变化或修饰,都应涵盖在本实用新型的保护范围之内。

Claims (2)

1.一种半导体功率器件,其特征在于:包括由环氧封装体(1)包覆的芯片基板(2)、芯片(3)和连接片(4),所述连接片(4)的下表面自环氧封装体(1)中裸露出,所述芯片(3)的一表面与此连接片(4)的上表面焊接连接,所述芯片(3)的另一表面与连接片(4)的一端连接,所述连接片(4)的另一端自环氧封装体(1)内延伸出;
所述连接片(4)进一步包括与芯片(3)连接的连接主体(5)和一端自环氧封装体(1)内伸出的引脚(6),所述引脚(6)靠近连接主体(5)一端的前、后两侧边缘处分别具有一向上的折弯部(7),从而在两个折弯部(7)与引脚(6)上表面之间形成一凹陷区(8),所述连接主体(5)的一端嵌入此凹陷区(8)内,并与引脚(6)上表面焊接连接。
2.根据权利要求1所述的半导体功率器件,其特征在于:所述芯片基板(2)与芯片(3)连接的表面上设置有一镀镍层。
CN202021457834.2U 2020-07-22 2020-07-22 半导体功率器件 Active CN212750881U (zh)

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