Virtual gate design for thin packages

Details Virtual gate design for thin packages Virtual gate design for thin packages

2006-02-28

2006-02-28

Ortiz, Angela (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

C264S272170, C264S276000, C264S328500, C425S116000, C425S544000

Reexamination Certificate

active

07005101

ABSTRACT:
The mold for a thin package uses a gate which has a high aspect ratio, about 30 degrees or greater throughout the length of the gate. Additionally, the depth of the gate goes to zero at a point outside of the area of the finished package, but within the dam bars, so that the leadframe space acts as a virtual gate. This reduces the need for trimming and lowers stress on the finished package.

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