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다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0047721 (1993-04-14) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 392 인용 특허 : 0 |
A ball grid array is formed by mounting and electrically connecting one or more electronic devices to a substrate in which vias are formed to interconnect electrically conductive traces formed in a surface of the substrate to solder ball pads formed at an opposite surface of the substrate. The vias
A ball grid array is formed by mounting and electrically connecting one or more electronic devices to a substrate in which vias are formed to interconnect electrically conductive traces formed in a surface of the substrate to solder ball pads formed at an opposite surface of the substrate. The vias are formed by mechanical or laser drilling. Solder balls are formed on each of the pads and are reflow-attached to, for instance, a printed circuit board. The electronic components can include one or more integrated circuit chips, as well as passive components. The electronic components are attached to the substrate using wirebonding, TAB or flip chip connection. An encapsulating material is applied to encapsulate the electronic devices.
A packaged integrated circuit, comprising: a substrate having first and second opposed surfaces, electrically conductive first traces being formed on the first surface of the substrate; a series of electrically conductive pads extending across a portion of the substrate opposite the first surface of
A packaged integrated circuit, comprising: a substrate having first and second opposed surfaces, electrically conductive first traces being formed on the first surface of the substrate; a series of electrically conductive pads extending across a portion of the substrate opposite the first surface of the substrate; a series of vias formed in the substrate, each via extending to one of said pads; electrically conductive plating material on sidewalls of said vias in electrical contact with selected ones of said first traces and with selected ones of said pads; an electronic device attached to the first surface of the substrate; means for making electrical connection between the electronic device and at least one of the first traces on the substrate; and encapsulant formed around the electronic device so as to protect the electronic device, the encapsulant covering at least a portion of the first surface of the substrate, filling said vias and extending against a via-facing surface of said pads.
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