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US 9,484,228 B2Granted
Simultaneous independently controlled dual side PCB molding technique
AssigneeApple Inc.
InventorsScott L. Gooch, Shankar S. Pennathur
Life of this patent
Estimating the term…
Abstract
Molding assemblies and methods for dual side package molding are described. In an embodiment, a molding compound is injected into a front cavity with a first actuator, and a molding compound is injected into a back cavity with a second actuator, with the first and second actuator assemblies being independently controlled. In an embodiment, the molding compound flows through a through-hole in a molding substrate from a front side of the molding substrate to a back side of the molding substrate, and into the back cavity.
Claims13
A molding assembly comprising:
- a front mold block including:
- a first cull;
- a first runner in fluid communication with the first cull;
- a front cavity in fluid communication with the first runner;
- a second cull;
- and
- a second runner in fluid communication with the second cull;
- wherein the first runner, the second runner, and the front cavity are formed in a same side of the front mold block, and the second runner is not in fluid communication with the front cavity;
- a back mold block including:
- a first pot alignable with the first cull;
- a second pot alignable with the second cull;
- a back cavity;
- and
- an intermediate runner alignable with the second runner, and in fluid communication with the back cavity;
- wherein the intermediate runner and the back cavity are formed in a same side of the back mold block;
- wherein a first fluid path exists from the first pot, to the first cull, through the first runner formed in the front mold block, and into the front cavity;
- and
- wherein a second fluid path exists from the second pot, to the second cull, through the second runner formed in the front mold block, into the intermediate runner formed in the back mold block, and into the back cavity.
15 more elements
A molding method comprising:
- actuating a first actuator to inject a first molding compound through a first runner and into a front cavity of a front mold block on a front side of a molding substrate;
- actuating a second actuator to inject a second molding compound through a second runner, through a through-hole in the molding substrate from the front side of the molding substrate to a back side of the molding substrate, and into a back cavity of a back mold block on the back side of the molding substrate;
- wherein the second actuator is operated independently of the first actuator.
Dependencies are inferred from the claim text.