Flip chip package with improved cap design and process for making thereof

Wire bond packages which mount encapsulated semiconductor chips, such as plastic ball grid array (PBGA) packages providing for the mounting of so-called flip-chips. The chips are overlaid with heat spreading perforated cap wherein the perforations are filled with an adhesive to prevent delamination...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FARQUHAR DONALD S, HOUSER DAVID E, PAPATHOMAS KONSTANTINOS I
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:Wire bond packages which mount encapsulated semiconductor chips, such as plastic ball grid array (PBGA) packages providing for the mounting of so-called flip-chips. The chips are overlaid with heat spreading perforated cap wherein the perforations are filled with an adhesive to prevent delamination caused by mismatches in the coefficients of thermal expansion, resulting in contractions which cause the entire package arrangement to warp, leading to delamination between an encapsulant and cap and resulting in failure of connect joints and the ball grid arrays.