HIGH-PRECISION BOND HEAD POSITIONING METHOD AND APPARATUS

HIGH-PRECISION BOND HEAD POSITIONING METHOD AND APPARATUS

After a die is picked up with a bond head, a first optical system views and determines a position and orientation of the die relative to the bond head. Separately, a second optical system views and determines a position and orientation of the bonding location when the second optical system has its f...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: YUNG, Chung Sheung, DENG, Jiangwen, SZE, Wui Fung
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:After a die is picked up with a bond head, a first optical system views and determines a position and orientation of the die relative to the bond head. Separately, a second optical system views and determines a position and orientation of the bonding location when the second optical system has its focal plane configured at a first distance from the second optical system. After the bond head is moved adjacent to the second optical system, the second optical system views and determines a position and orientation of the bond head when the second optical system has its focal plane configured at a second distance from the second optical system. The position and orientation of the die may then be adjusted to correct a relative offset between the die and the bonding location prior to depositing the die onto the bonding location.