发明名称 |
Semiconductor assembly for improved device warpage and solder ball coplanarity |
摘要 |
A semiconductor device with a chip ( 505 ), its position defining a plane, and an insulating substrate ( 503 ) with first and second surfaces; the substrate is substantially coplanar with the chip, without warpage. One of the chip sides is attached to the first substrate surface using adhesive material ( 504 ), which has a thickness. The thickness of the adhesive material is distributed so that the thickness ( 504 b) under the central chip area is equal to or smaller than the material thickness ( 504 a) under the peripheral chip areas. Encapsulation compound ( 701 ) is embedding all remaining chip sides and the portions of the first substrate surface, which are not involved in the chip attachment. When reflow elements ( 720 ) are attached to the substrate contact pads, they are substantially coplanar with the chip.
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申请公布号 |
US7244636(B2) |
申请公布日期 |
2007.07.17 |
申请号 |
US20050253940 |
申请日期 |
2005.10.19 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
ANCHETA, JR. PATRICIO V.;VILUAN RAMIL A.;BAELLO JAMES R. M.;REYES ELAINE B. |
分类号 |
H01L21/00;H01L21/30;H01L29/40 |
主分类号 |
H01L21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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