Semiconductor assembly encapsulation mold
First Claim
1. A semiconductor assembly encapsulation mold comprising:
- a first mold section; and
a second mold section, said first and second mold sections being engagable and shaped to define a cavity for encapsulating a semiconductor assembly comprising a substrate and a plurality of dies supported by said substrate, one of said mold sections having an interior surface which faces said semiconductor assembly when placed in said mold, said interior surface having a design feature which produces a complementary design feature in an exterior surface of an encapsulation layer covering said semiconductor assembly, wherein said complementary design feature is produced at locations between dies of said assembly, said complementary design feature being substantially a cavity formed in said encapsulation layer, wherein said cavity extends from said exterior surface of said encapsulation layer to a depth that is elevationally above said dies.
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Accused Products
Abstract
An encapsulation mold for forming an encapsulation layer over a semiconductor assembly is disclosed. A semiconductor assembly with multiple semiconductor dies secured to a single semiconductor support structure is inserted into an encapsulation mold. The mold contains a first section and a second section, which form a cavity around the assembly. The mold contains an aperture for transferring encapsulating material into the mold cavity. One of the mold sections has a design feature, such as a raised rib or groove interconnecting at approximately the separation or saw-cut regions of the individual dies of the assembly. Encapsulation material is inserted into the mold cavity until the cavity is filled. The mold section design feature shapes the top surface of the encapsulation layer. The mold is removed leaving the exterior surface of the encapsulation layer patterned with the design feature. The assembly is then separated into individual dies along the design feature boundary of the encapsulation layer'"'"'s exterior surface.
37 Citations
18 Claims
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1. A semiconductor assembly encapsulation mold comprising:
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a first mold section; and
a second mold section, said first and second mold sections being engagable and shaped to define a cavity for encapsulating a semiconductor assembly comprising a substrate and a plurality of dies supported by said substrate, one of said mold sections having an interior surface which faces said semiconductor assembly when placed in said mold, said interior surface having a design feature which produces a complementary design feature in an exterior surface of an encapsulation layer covering said semiconductor assembly, wherein said complementary design feature is produced at locations between dies of said assembly, said complementary design feature being substantially a cavity formed in said encapsulation layer, wherein said cavity extends from said exterior surface of said encapsulation layer to a depth that is elevationally above said dies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A semiconductor assembly comprising:
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a semiconductor die support structure having a top and a bottom surface;
a plurality of semiconductor dies secured to said support structure top surface; and
an encapsulation layer having an exterior surface and covering said plurality of semiconductor dies and said support structure top surface, wherein said encapsulation layer exterior surface has a raised design feature having a width of about 10 microns or greater disposed between two or more of said semiconductor dies. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification