Method and apparatus for wire bonding semiconductor dice to a leadframe
First Claim
1. In semiconductor manufacture a method of wire bonding semiconductor dice attached to a leadframe strip comprising:
- providing a wire bonding apparatus having a heat block for heating the dice and leadframe strip, a clamp having multiple bond site windows spaced apart to match the spacing of the dice on the leadframe strip and a bonding tool for wire bonding;
indexing the semiconductor leadframe strip to a precise location within the wire bonding apparatus;
clamping multiple semiconductor dice attached to the leadframe strip between the heat block and clamp of the wire bonding apparatus;
wire bonding bond pads on a first die to lead fingers of the leadframe strip using the bonding tool of the wire bonding apparatus placed through a first bond site window; and
moving the bonding tool to successively wire bond each die clamped between the clamp and heat block with a single index of the leadframe.
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Accused Products
Abstract
A method and apparatus for wire bonding bond pads formed on semiconductor dice to the lead fingers of a semiconductor leadframe are provided. Using an automated wire bonding apparatus two (or more) adjacent dice attached to the leadframe are wire bonded using a single indexing step for the leadframe. The wire bonding apparatus includes a heat block for heating the two adjacent dice, and a clamp for clamping the two adjacent dice to the heat block for wire bonding. A bonding tool of the wire bonding apparatus is moved to successively wire bond the two adjacent dice. The method of the invention is suitable for DIP, ZIP, SOJ, TSOP, PLCC, SOIC, PQFP, or IDF semiconductor packages.
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Citations
15 Claims
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1. In semiconductor manufacture a method of wire bonding semiconductor dice attached to a leadframe strip comprising:
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providing a wire bonding apparatus having a heat block for heating the dice and leadframe strip, a clamp having multiple bond site windows spaced apart to match the spacing of the dice on the leadframe strip and a bonding tool for wire bonding; indexing the semiconductor leadframe strip to a precise location within the wire bonding apparatus; clamping multiple semiconductor dice attached to the leadframe strip between the heat block and clamp of the wire bonding apparatus; wire bonding bond pads on a first die to lead fingers of the leadframe strip using the bonding tool of the wire bonding apparatus placed through a first bond site window; and moving the bonding tool to successively wire bond each die clamped between the clamp and heat block with a single index of the leadframe. - View Dependent Claims (2, 3, 4)
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5. In semiconductor manufacture, a method of wire bonding bond pads on semiconductor dice with lead fingers of a semiconductor leadframe comprising;
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attaching multiple semiconductor dice to mounting paddles of the leadframe; providing a wire bonding apparatus having a heat block for heating the dice and a clamp for clamping the dice for wire bonding by a bond tool, with the heat block and clamp adapted to simultaneously clamp and heat multiple dice; indexing the leadframe to a precise location for clamping multiple semiconductor dice between the clamp and heat block for wire bonding; and moving the bonding tool to successively wire bond each die clamped between the clamp and heat block with a single index of the leadframe. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A method for wire bonding bond pads formed on a semiconductor die to lead fingers of a semiconductor leadframe, comprising;
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attaching multiple semiconductor dice to mounting paddles of the leadframe; providing a wire bonding apparatus having a clamp for clamping two semiconductor dice contained on the leadframe to a heat block for heating the dice and leadframe; indexing the leadframe to position two adjacent dice for clamping between the clamp and the heat block; clamping the two adjacent dice between the clamp and the heat block; wire bonding a first clamped die using a bonding tool placed through a first bond site window of the clamp; moving the bonding tool to a second clamped die; wire bonding the second clamped die using the bonding tool placed through a second bond site window of the clamp; and indexing the leadframe to position a next two adjacent dice for clamping between the clamp and heat block and for wire bonding by the bond tool. - View Dependent Claims (12, 13, 14, 15)
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Specification