Semiconductor chip assembly with post/base heat spreader with ESD protection layer
First Claim
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1. A semiconductor chip assembly, comprising:
- a semiconductor device;
an adhesive that includes an opening;
a heat spreader that includes a post, a base, an ESD protection layer and an underlayer wherein (i) the post is adjacent to the base and extends above the base in an upward direction, (ii) the base covers 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 direction, (iii) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (iv) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post and wherein the heat spreader includes a cap that extends above and is adjacent to and covers in the upward direction and extends laterally from a top of the post and that contacts and overlaps the adhesive; and
a conductive trace that includes a pad and a terminal;
wherein the semiconductor device overlaps the post, the base, the ESD protection lay and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the post and thereby thermally connected to the underlayer and wherein the pad and the cap have the same thickness where closest to one another and are coplanar with one another;
wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; and
wherein the post extends into the opening and the underlayer extends below the semiconductor device and the pad.
1 Assignment
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Accused Products
Abstract
A semiconductor chip assembly includes a semiconductor device, a heat spreader, a conductive trace and an adhesive. The heat spreader includes a post, a base, an ESD protection layer and an underlayer. The conductive trace includes a pad and a terminal. The semiconductor device is electrically connected to the conductive trace, electrically isolated from the underlayer and thermally connected to the heat spreader. The post extends upwardly from the base into an opening in the adhesive, the base extends laterally from the post and the ESD protection layer is sandwiched between the base and the underlayer. The conductive trace provides signal routing between the pad and the terminal.
90 Citations
55 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, a base, an ESD protection layer and an underlayer wherein (i) the post is adjacent to the base and extends above the base in an upward direction, (ii) the base covers 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 direction, (iii) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (iv) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post and wherein the heat spreader includes a cap that extends above and is adjacent to and covers in the upward direction and extends laterally from a top of the post and that contacts and overlaps the adhesive; and a conductive trace that includes a pad and a terminal; wherein the semiconductor device overlaps the post, the base, the ESD protection lay and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the post and thereby thermally connected to the underlayer and wherein the pad and the cap have the same thickness where closest to one another and are coplanar with one another; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; and wherein the post extends into the opening and the underlayer extends below the semiconductor device and the pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. 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, a base, a cap, an ESD protection layer and an underlayer, wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the cap extends above and is adjacent to and covers in upward direction and extends laterally from a top of the post, (iv) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (v) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; and a conductive trace that includes a pad, a terminal and a plated through-hole, wherein the plated through-hole extends below the pad and above the terminal and an electrically conductive path between the pad and the terminal includes the plated through-hole; wherein the semiconductor device is mounted on the cap, overlaps the post, the base, ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the cap and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the pad extends above the adhesive, the terminal extends below the adhesive and the plated through-hole extends through the adhesive; and wherein the post extends into the opening, the cap overlaps the adhesive and the underlayer extends below the semiconductor device and the pad and wherein the pad and the cap have the same thickness where closest to one another, have different thickness where the cap is adjacent to the post and are coplanar with one another. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. 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, a base, an ESD protection layer and an underlayer wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (iv) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; a substrate that includes a dielectric layer, wherein an aperture extends through the substrate; and a conductive trace that includes a pad and a terminal; wherein the semiconductor device overlaps the post, the base, the ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the post and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the substrate is mounted on the adhesive and extends above the base; and wherein the post extends into the opening and the aperture, and the underlayer extend below the semiconductor device and the pad and wherein the terminal and the underlayer have the same thickness where closest to one another and are coplanar with one another and the base is thicker than the pad, the terminal and the underlayer. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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42. 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, a base, a cap, an ESD protection layer and an underlayer, wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the cap extends above and is adjacent to and covers in the upward direction and extends laterally from a top of the post, (iv) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (v) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; a substrate that includes a dielectric layer, wherein an aperture extends through the substrate; and a conductive trace that includes a pad, a terminal and a plated through-hole, wherein the plated through-hole extends below the pad and above the terminal and an electrically conduct path between the pad and the terminal includes the plated through-hole; wherein the semiconductor device is mounted on the cap, overlaps the post, the base, the ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the cap and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends between the post and the substrate, extends between the post and the plated through-hole, extends laterally from the post to or beyond the terminal and is sandwiched between the post and the dielectric layer, between the base and the dielectric layer, between the terminal and the dielectric layer and between the base and the pad; wherein the substrate is mounted on the adhesive and extends above the base; wherein the pad extends above the base, the adhesive, the dielectric layer and the ESD protection layer, the terminal extends below the base, the adhesive, the dielectric layer and the ESD protection layer and the plated through-hole extends through the base, the adhesive, the dielectric layer and the ESD protection layer and is spaced from the base; and wherein the post extends into the opening and the aperture, the cap overlaps the adhesive and the underlayer extends below the semiconductor device, the substrate and the pad. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. 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, a base, a cap, an ESD protection layer and an underlayer, wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the cap extends above and is adjacent to and covers in upward direction and extends laterally from a top of the post, (iv) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (v) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; and a conductive trace that includes a pad, a terminal and a plated through-hole, wherein the plated through-hole extends below the pad and above the terminal and an electrically conductive path between the pad and the terminal includes the plated through-hole; wherein the semiconductor device is mounted on the cap, overlaps the post, the base, ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the cap and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the pad extends above the adhesive, the terminal extends below the adhesive and the plated through-hole extends through the adhesive; and wherein the post extends into the opening, the cap overlaps the adhesive and the underlayer extends below the semiconductor device and the pad and wherein the pad and the cap have the same thickness where closest to one another, have different thickness where the cap is adjacent to the post and are coplanar with one another, the terminal and the underlayer have the same thickness where closest to one another and are coplanar with one another and the base is thicker than the pad, the terminal and the underlayer.
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53. 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, a base, a cap, an ESD protection layer and an underlayer, wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the cap extends above and is adjacent to and covers in upward direction and extends laterally from a top of the post, (iv) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (v) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; and a conductive trace that includes a pad, a terminal and a plated through-hole, wherein the plated through-hole extends below the pad and above the terminal and an electrically conductive path between the pad and the terminal includes the plated through-hole; wherein the semiconductor device is mounted on the cap, overlaps the post, the base, ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the cap and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the pad extends above the adhesive, the terminal extends below the adhesive and the plated through-hole extends through the adhesive; and wherein the post extends into the opening, the cap overlaps the adhesive and the underlayer extends below the semiconductor device and the pad and wherein the pad, the terminal, cap and the underlayer are the same metals and the post and the base are the same metal.
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54. 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, a base, a cap, an ESD protection layer and an underlayer, wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the cap extends above and is adjacent to and covers in upward direction and extends laterally from a top of the post, (iv) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (v) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; and a conductive trace that includes a pad, a terminal and a plated through-hole, wherein the plated through-hole extends below the pad and above the terminal and an electrically conductive path between the pad and the terminal includes the plated through-hole; wherein the semiconductor device is mounted on the cap, overlaps the post, the base, ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the cap and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the pad extends above the adhesive, the terminal extends below the adhesive and the plated through-hole extends through the adhesive; and wherein the post extends into the opening, the cap overlaps the adhesive and the underlayer extends below the semiconductor device and the pad and wherein the pad, the terminal, the cap and the underlayer include a gold, silver or nickel surface layer and a buried copper core and are primarily copper and the post and the base are copper.
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55. 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, a base, a cap, an ESD protection layer and an underlayer, wherein (i) the post is adjacent to and integral with the base and extends above the base in an upward direction, (ii) the base covers 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, (iii) the cap extends above and is adjacent to and covers in upward direction and extends laterally from a top of the post, (iv) the ESD protection layer is a thermally conductive, electrically insulative material that contacts and is sandwiched between and thermally connects and electrically isolates the base and the underlayer, extends below the base, covers the post in the downward direction and extends laterally beyond the post, and (v) the underlayer extends below the ESD protection layer, covers the post in the downward direction and extends laterally beyond the post; and a conductive trace that includes a pad, a terminal and a plated through-hole, wherein the plated through-hole extends below the pad and above the terminal and an electrically conductive path between the pad and the terminal includes the plated through-hole; wherein the semiconductor device is mounted on the cap, overlaps the post, the base, ESD protection layer and the underlayer, is electrically connected to the pad and thereby electrically connected to the terminal, is electrically isolated from the underlayer and is thermally connected to the cap and thereby thermally connected to the underlayer; wherein the adhesive is mounted on and extends above the base, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein the pad extends above the adhesive, the terminal extends below the adhesive and the plated through-hole extends through the adhesive; and wherein the post extends into the opening, the cap overlaps the adhesive and the underlayer extends below the semiconductor device and the pad and wherein the conductive trace includes a copper core shared by the pad, the terminal and the plated through-hole and the heat spreader includes a copper core shared by the post, the base and the cap.
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Specification