The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2010
Filed:
Apr. 15, 2009
Yong-chao Qiao, Shanghai, CN;
Yan-yi Wu, Shanghai, CN;
Jie-hung Chiou, Shanghai, CN;
ChipMOS Technologies (Bermuda) Ltd., Hamilton, BM;
Abstract
A chip package structure includes a chip, a lead frame, first and second bonding wires, an upper encapsulant, a first lower encapsulant, and a second lower encapsulant. The chip has an active surface, a back surface, and chip bonding pads disposed on the active surface. The lead frame having an upper surface and a lower surface includes a die pad, leads, and at least a bus bar. The back surface of the chip is adhered to the die pad. The leads surround the die pad. The bus bar is disposed between the die pad and the leads. The first bonding wires are connected to the chip bonding pads and the bus bar. The second bonding wires are connected to the bus bar and the leads. The upper encapsulant encapsulates the upper surface of the lead frame, the chip, the first bonding wires, and the second bonding wires.