US6107683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequentially built integrated circuit package
Assignee: Touch Future Technology Ltd
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Filing: 1998-05-08
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Granted: 2000-08-22
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Expires: 2018-05-08
Abstract
Abstract An enhanced ball grid array substrate package and method for manufacturing the same, where the substrate package includes a metal core having a first surface and a second surface opposite the first surface. The metal core further includes at least one cavity in which at least one integrated circuit is positioned. A dielectric layer is secured to the first surface of the metal core and includes at least one die cavity formed therein. Thereafter, a conductive seed layer is chemically deposited to exposed portions of the dielectric layer and the first surface of the metal core. Adjacent to the conductive seed layer, a circuit is electrolytically and selectively formed within a first circuit pattern.
Inventors
- 👤 Abram M. Castro
- 👤 Aaron R. Castro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:31
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/40; H10W76/42; H10W76/47; H10W76/10; H10W90/00; H10W90/701; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10W70/682; H10W70/685; H10W72/00; H10W72/01; H10W72/0198; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554; H10W72/50; H10W72/541; H10W72/547; H10W72/851; H10W72/874; H10W72/884; H10W72/90; H10W72/951; H10W72/952; H10W74/00; H10W90/731; H10W90/736
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A substrate package suitable for use with a ball grid array, comprising: a metal core having a first surface and a second surface opposite the first surface, the metal core having a cavity formed therein which opens onto the first surface of the metal core, the first surface further having an adhesion promoting electrically conductive surface layer which is free of adhesives; a dielectric layer applied to the first surface of the metal core and adhered directly thereto by the adhesion promoting surface layer, said dielectric layer having a die cavity formed therein, said die cavity being coincident with said cavity; a circuit disposed on the dielectric layer, said circuit electrolytically and selectively formed in a first circuit pattern; and an electrically resistive soldermask layer disposed on the dielectric layer and the circuit.
Claim 2
Dependent Claim
133 words
A substrate package suitable for use with a ball grid array, comprising: a metal core having a first surface and a second surface opposite the first surface, the metal core having a cavity formed therein which opens onto the first surface of the metal core, the first surface further having an adhesion promoting electrically conductive surface layer which is free of adhesives; a dielectric layer applied to the first surface of the metal core and adhered directly thereto by the adhesion promoting surface layer, said dielectric layer having a die cavity formed therein, said die cavity being coincident with said cavity; a circuit disposed on the dielectric layer, said circuit electrolytically and selectively formed in a first circuit pattern; and an electrically resistive soldermask layer disposed on the dielectric layer and the circuit.
Claim 3
Dependent Claim
29 words
The substrate package in accordance with claim 1 further comprising bond areas positioned on the circuit, which bond areas are electrolytically and selectively formed within a second circuit pattern.
Claim 4
Dependent Claim
32 words
The substrate package in accordance with claim 2 further comprising an integrated circuit positioned within said cavity and a plurality of bond wires that connect said integrated circuit to said bond areas.
Claim 5
Dependent Claim
29 words
The substrate package in accordance with claim 1, further comprising an upwardly protruding rim positioned about a perimeter of said cavity suitable for containing an electrically insulating encapsulant material.
Claim 6
Dependent Claim
16 words
The substrate package in accordance with claim 4 further comprising a lid positionable over the rim.
Claim 7
Dependent Claim
26 words
The substrate package in accordance with claim 1 wherein the soldermask further includes a plurality of openings each having an electrical contact connected to the circuit.
Claim 8
Dependent Claim
22 words
The substrate package in accordance with claim 6 further comprising a plurality of solder balls each respectively connected to the electrical contacts.
Claim 9
Dependent Claim
62 words
The substrate package in accordance with claim 1 wherein the dielectric layer further includes an outer recessed edge located along at least a portion of an outer perimeter of the metal core and an inner recessed edge located along at least a portion of an outer perimeter of said cavity, which inner and outer recessed edges are covered by the soldermask layer.
Claim 10
Dependent Claim
30 words
The substrate package in accordance with claim 1, further comprising a plurality of dielectric layers and circuits of varying pattern positioned on top of one another beneath the soldermask layer.
Claim 11
Dependent Claim
22 words
The substrate package of claim 1, wherein the adhesion promoting surface layer is a chemically etched surface portion of the metal core.
Claim 12
Dependent Claim
22 words
The substrate package of claim 1, wherein the adhesion promoting surface layer is a mechanically roughened surface portion of the metal core.
Claim 13
Dependent Claim
18 words
The substrate package of claim 1, wherein the adhesion promoting surface layer is a layer of an oxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-22 | 2004-02-21 | 2004-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-22 | 2008-02-21 | 2008-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-22 | 2012-02-21 | 2012-08-22 | $7700.00 | Window Closed / Lapsed |