SEMICONDUCTOR CHIP ASSEMBLY WITH POST/BASE HEAT SPREADER AND CAVITY OVER POST
First Claim
1. A semiconductor chip assembly, comprising:
- a semiconductor device;
an adhesive that includes an opening;
a heat spreader that includes a post and a base, wherein the post is adjacent to the base and extends above the base in an upward direction, and the base extends below the post in a downward direction opposite the upward direction and extends laterally from the post in lateral directions orthogonal to the upward and downward directions;
a conductive trace that includes a pad and a terminal; and
an encapsulant;
wherein a cavity in the adhesive extends to the post and faces in the upward direction;
wherein the semiconductor device extends into the cavity, is above and overlaps the post, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the post and thereby thermally connected to the base;
wherein the adhesive is mounted on and extends above the base, extends between the post and the pad, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad;
wherein the conductive trace is located outside the cavity;
wherein the encapsulant extends into the cavity and covers the semiconductor device in the upward direction; and
wherein the post extends into the opening and is located below the cavity, and the base extends below the semiconductor device, the adhesive, the encapsulant and the pad.
1 Assignment
0 Petitions
Accused Products
Abstract
A semiconductor chip assembly includes a semiconductor device, a heat spreader, a conductive trace and an adhesive. The semiconductor device extends into a cavity in the adhesive, is electrically connected to the conductive trace and is thermally connected to the heat spreader. The heat spreader includes a post and a base. The post extends upwardly from the base into an opening in the adhesive and is located below the cavity, and the base extends laterally from the post. The cavity extends to the post. The adhesive extends between the cavity and the conductive trace and between the base and the conductive trace. The conductive trace is located outside the cavity and provides signal routing between a pad and a terminal.
89 Citations
35 Claims
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1. A semiconductor chip assembly, comprising:
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a semiconductor device; an adhesive that includes an opening; a heat spreader that includes a post and a base, wherein the post is adjacent to the base and extends above the base in an upward direction, and the base extends below the post in a downward direction opposite the upward direction and extends laterally from the post in lateral directions orthogonal to the upward and downward directions; a conductive trace that includes a pad and a terminal; and an encapsulant; wherein a cavity in the adhesive extends to the post and faces in the upward direction; wherein the semiconductor device extends into the cavity, is above and overlaps the post, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the post and thereby thermally connected to the base; wherein the adhesive is mounted on and extends above the base, extends between the post and the pad, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the conductive trace is located outside the cavity; wherein the encapsulant extends into the cavity and covers the semiconductor device in the upward direction; and wherein the post extends into the opening and is located below the cavity, and the base extends below the semiconductor device, the adhesive, the encapsulant and the pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A semiconductor chip assembly, comprising:
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a semiconductor device; an adhesive that includes an opening; a heat spreader that includes a post and a base, wherein the post is adjacent to the base and extends above the base in an upward direction, and the base extends below the post in a downward direction opposite the upward direction and extends laterally from the post in lateral directions orthogonal to the upward and downward directions; a substrate that includes a dielectric layer, wherein an aperture extends through the substrate; a conductive trace that includes a pad and a terminal; and an encapsulant; wherein a cavity in the adhesive extends to the post and faces in the upward direction; wherein the semiconductor device is located within the cavity, is above and overlaps the post, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the post and thereby thermally connected to the base; wherein the adhesive is mounted on and extends above the base, extends into a gap in the aperture between the cavity and the substrate, extends across the dielectric layer in the gap, extends laterally from the post to or beyond the terminal and is sandwiched between the encapsulant and the dielectric layer and between the base and the dielectric layer; wherein the substrate is mounted on the adhesive and extends above the base; wherein the conductive trace is located outside the cavity; wherein the encapsulant extends into the cavity and covers the semiconductor device in the upward direction; and wherein the post extends into the opening and is located below the cavity, and the base extends below the semiconductor device, the adhesive, the encapsulant, the substrate and the pad. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A semiconductor chip assembly, comprising:
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a semiconductor device; an adhesive that includes an opening; a heat spreader that includes a post and a base, wherein the post is adjacent to and integral with the base and extends above the base in an upward direction, and the base extends below the post in a downward direction opposite the upward direction and extends laterally from the post in lateral directions orthogonal to the upward and downward directions; a substrate that includes a conductive trace and a dielectric layer, wherein the conductive trace includes a pad, a terminal and a routing line, the pad, the terminal and the routing line contact and extend above the dielectric layer, an electrically conductive path between the pad and the terminal includes the routing line, and an aperture extends through the substrate; and an encapsulant; wherein a cavity in the adhesive extends to the post and faces in the upward direction; wherein the semiconductor device is located within the cavity, is mounted on and above and overlaps the post, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the post and thereby thermally connected to the base; wherein the adhesive is mounted on and extends above the base, extends into a gap in the aperture between the cavity and the substrate, extends across the dielectric layer in the gap, is sandwiched between the encapsulant and the dielectric layer in the gap, is sandwiched between the base and the dielectric layer outside the gap, surrounds the post in the lateral directions, is overlapped by the pad, the terminal and the routing line and extends to peripheral edges of the assembly; wherein the substrate is mounted on the adhesive, extends above the base and is located outside the cavity; wherein the encapsulant extends into the cavity and covers the semiconductor device in the upward direction; and wherein the post extends into the opening and is located below the cavity, and the base extends below the semiconductor device, the adhesive, the encapsulant and the substrate, covers the post, the adhesive, the encapsulant and the substrate in the downward direction and extends to peripheral edges of the assembly. - View Dependent Claims (32, 33, 34, 35)
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Specification