PACKAGED SEMICONDUCTOR DEVICE WITH DUAL EXPOSED SURFACES AND METHOD OF MANUFACTURING
First Claim
1. A method for making a packaged semiconductor device, the method comprising:
- a. providing at least one semiconductor die comprising a transistor having at least one control region and at least one first terminal region and a second terminal region;
b. providing a thermal clip with a first surface and a second surfacec. providing a lead frame array in matrix format, said lead frame comprising at least one first terminal pad structure with at least one first terminal lead extending from one side of said first terminal lead pad structure;
at least one control pad structure with at least one control lead extending from one end of said control pad structure; and
at least one second terminal pad structure with at least one second terminal lead extending from one end of said second terminal pad structure, wherein said lead frame has a first surface and a second surface;
d. providing a nonconductive molding material;
e. attaching said second terminal region of said semiconductor die to said second surface of said thermal clip;
f. attaching said control region of said semiconductor die to said first surface of said control pad structure and said first terminal region to said first surface of said first terminal pad structure in said lead frame;
g. attaching said second surface of said thermal clip to said first surface of said second terminal pad structure in said lead frame;
h. encapsulating said semiconductor die, said thermal clip and said lead frame with said nonconductive molding material, wherein said first surface of said thermal clip and said first terminal pad structure on said second surface of said lead frame and said control lead, said first terminal leads and said second terminal leads are exposed through the molding material.
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Accused Products
Abstract
The invention claimed is a packaged semiconductor device with dual exposed surfaces and a method of manufacturing the device. A thermal clip and one or multiple source pads are exposed on opposite ends of the device through a nonconductive molding material used to package the device. The thermal clip and source pad can be either top or bottom-exposed. The gate, source and drain leads are exposed through the molding material, and all leads are coplanar with the bottom-exposed surface. The device can have multiple semiconductor dies or various sized dies while still having a single, constant footprint. The method of manufacturing requires attaching the semiconductor die to a thermal clip, and then attaching the die with the attached thermal clip to a lead frame. The resulting device is then molded, marked, trimmed and singulated, in this order, creating a packaged semiconductor device with dual exposed surfaces.
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Citations
7 Claims
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1. A method for making a packaged semiconductor device, the method comprising:
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a. providing at least one semiconductor die comprising a transistor having at least one control region and at least one first terminal region and a second terminal region; b. providing a thermal clip with a first surface and a second surface c. providing a lead frame array in matrix format, said lead frame comprising at least one first terminal pad structure with at least one first terminal lead extending from one side of said first terminal lead pad structure;
at least one control pad structure with at least one control lead extending from one end of said control pad structure; and
at least one second terminal pad structure with at least one second terminal lead extending from one end of said second terminal pad structure, wherein said lead frame has a first surface and a second surface;d. providing a nonconductive molding material; e. attaching said second terminal region of said semiconductor die to said second surface of said thermal clip; f. attaching said control region of said semiconductor die to said first surface of said control pad structure and said first terminal region to said first surface of said first terminal pad structure in said lead frame; g. attaching said second surface of said thermal clip to said first surface of said second terminal pad structure in said lead frame; h. encapsulating said semiconductor die, said thermal clip and said lead frame with said nonconductive molding material, wherein said first surface of said thermal clip and said first terminal pad structure on said second surface of said lead frame and said control lead, said first terminal leads and said second terminal leads are exposed through the molding material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification