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US5973403A Expired / Lapsed US ⏱️ 0.0 years remaining

Device and method for stacking wire-bonded integrated circuit dice on flip-chip bonded integrated circuit dice

Assignee: Micron Technology Inc
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Filing: 1997-08-19
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Granted: 1999-10-26
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Expires: 2017-08-19
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Abstract

Abstract An inventive electronic device, such as a multi-chip module (MCM), a Single In-line Memory Module (SIMM), or a Dual In-line Memory Module (DIMM), includes a base, such as a printed circuit board, having a surface on which flip-chip pads and wire-bondable pads are provided. The flip-chip pads define an area on the surface of the base at least partially bounded by the wire-bondable pads. A first integrated circuit (IC) die is flip-chip bonded to the flip-chip pads, and a second IC die is back-side attached to the first IC die and then wire-bonded to the wire-bondable pads. As a result, the flip-chip mounted first IC die is stacked with the second IC die in a simple, novel manner.

Inventors

  • 👤 James M. Wark

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 08:15
CPC Classifications
G; G11; G11C; G11C5/00; G11C5/02; G11C5/04; H; H10; H10W; H10W90/00; H10W70/00; H10W70/60; H10W72/00; H10W72/01; H10W72/071; H10W72/072; H10W72/07231; H10W72/07236; H10W72/075; H10W72/20; H10W72/29; H10W72/50; H10W72/541; H10W72/5445; H10W72/851; H10W72/874; H10W72/884; H10W72/90; H10W72/931; H10W72/932; H10W90/20; H10W90/284; H10W90/701; H10W90/721; H10W90/722; H10W90/724; H10W90/731; H10W90/732; H10W90/751; H10W90/752; H10W90/753; H10W90/754; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144

Claims Analysis

Total Claims: 26
Claim 1
Independent Claim 199 words
An electronic device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, the at least one flip-chip pad of the first plurality of flip-chip pads being connected to at least one wire-bondable pad of the second plurality of wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon at least one flip-chip bump of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 2
Dependent Claim 199 words
An electronic device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, the at least one flip-chip pad of the first plurality of flip-chip pads being connected to at least one wire-bondable pad of the second plurality of wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon at least one flip-chip bump of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 3
Dependent Claim 29 words
The electronic device of claim 1 wherein the first plurality of flip-chip pads and the second plurality of wire-bondable pads are interconnected in a single layer of the base.
Claim 4
Dependent Claim 37 words
The electronic device of claim 1 wherein the base includes multiple layers, wherein the first plurality of flip-chip pads and the second plurality of wire-bondable pads are interconnected in a plurality of the layers of the base.
Claim 5
Dependent Claim 14 words
The electronic device of claim 1 wherein the base comprises a printed circuit board.
Claim 6
Dependent Claim 55 words
The electronic device of claim 1 wherein the first integrated circuit die and the second integrated circuit die are the same type of die and the first plurality of flip-chip bumps on the first integrated circuit die are arranged in a pattern identical to that of the bond pads on the second integrated circuit die.
Claim 7
Dependent Claim 188 words
A memory device comprising at least two electronic devices, each memory device including: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads, the at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire-bondable pad of the second plurality of wire-bondable pads; a first integrated circuit memory chip having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon connected to the at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit memory chip having opposing front-side and back-side surfaces, the back-side surface attached to the back-side surface of the first integrated circuit memory chip and the front-side surface having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit memory chip and at least one pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 8
Dependent Claim 188 words
A memory device comprising at least two electronic devices, each memory device including: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads, the at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire-bondable pad of the second plurality of wire-bondable pads; a first integrated circuit memory chip having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon connected to the at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit memory chip having opposing front-side and back-side surfaces, the back-side surface attached to the back-side surface of the first integrated circuit memory chip and the front-side surface having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit memory chip and at least one pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 9
Dependent Claim 33 words
The memory device of claim 6 wherein each electronic device is selected from a group comprising a Multi-Chip Module (MCM), a Single In-line Memory Module (SIMM), and a Dual In-line Memory Module (DIMM).
Claim 10
Dependent Claim 210 words
An electronic system comprising an input device, an output device, a memory device, and a processor device coupled to the input device, the output device, and the memory devices, one of the input device, the output device, the memory device, and processor device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, the first plurality of flip-chip pads connected to the wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon, at least one flip-chip bumps of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface attached to the back-side surface of the first integrated circuit die and the front-side surface having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 11
Dependent Claim 210 words
An electronic system comprising an input device, an output device, a memory device, and a processor device coupled to the input device, the output device, and the memory devices, one of the input device, the output device, the memory device, and processor device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, the first plurality of flip-chip pads connected to the wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon, at least one flip-chip bumps of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface attached to the back-side surface of the first integrated circuit die and the front-side surface having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 12
Dependent Claim 274 words
An electronic device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to the first plurality of wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon and at least one flip-chip bumps of the first plurality of flip-chip bumps connected to at least one flip-chip pad of the second plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; a third integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the third integrated circuit die attached to the front-side surface of the second die and the front-side surface of the third integrated circuit die having a plurality of bond pads thereon; a first wire connected to at least one bond pad of the plurality of bond pads on the first surface of the second integrated circuit die and at least one wire-bondable pad of the second wire-bondable pads of the base; and a second wire connected to at least one bond pad of the plurality of bond pads on the first surface of the third integrated circuit die and at least one wire-bondable pad of the second wire-bondable pads of the base.
Claim 13
Dependent Claim 274 words
An electronic device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to the first plurality of wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon and at least one flip-chip bumps of the first plurality of flip-chip bumps connected to at least one flip-chip pad of the second plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; a third integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the third integrated circuit die attached to the front-side surface of the second die and the front-side surface of the third integrated circuit die having a plurality of bond pads thereon; a first wire connected to at least one bond pad of the plurality of bond pads on the first surface of the second integrated circuit die and at least one wire-bondable pad of the second wire-bondable pads of the base; and a second wire connected to at least one bond pad of the plurality of bond pads on the first surface of the third integrated circuit die and at least one wire-bondable pad of the second wire-bondable pads of the base.
Claim 14
Dependent Claim 28 words
The electronic device of claim 9 wherein the first plurality of flip-chip pads and the second plurality wire-bondable pads are interconnected in a single layer of the base.
Claim 15
Dependent Claim 36 words
The electronic device of claim 9 wherein the base includes multiple layers, wherein the first plurality of flip-chip pads and the second plurality of wire-bondable pads are interconnected in a plurality of layers of the base.
Claim 16
Dependent Claim 14 words
The electronic device of claim 9 wherein the base comprises a printed circuit board.
Claim 17
Dependent Claim 325 words
An electronic system comprising an input device, an output device, a memory device, and a processor device coupled to the input device, output device, and memory device, one of the input device, output device, memory device, and processor device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire-bondable pad of the second plurality of wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon, at least one flip-chip bumps of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon a third integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the third integrated circuit die attached to the front-side surface of the second integrated circuit die and the front-side surface of the third integrated circuit die having a plurality of bond pads thereon; a first wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one wire-bondable pad of the second plurality of wire-bondable pads on the surface of the base; and a second wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the third integrated circuit die and at least one bond pad of the plurality of bond pads on the surface of the base.
Claim 18
Dependent Claim 325 words
An electronic system comprising an input device, an output device, a memory device, and a processor device coupled to the input device, output device, and memory device, one of the input device, output device, memory device, and processor device comprising: a base having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire-bondable pad of the second plurality of wire-bondable pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon, at least one flip-chip bumps of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon a third integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the third integrated circuit die attached to the front-side surface of the second integrated circuit die and the front-side surface of the third integrated circuit die having a plurality of bond pads thereon; a first wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one wire-bondable pad of the second plurality of wire-bondable pads on the surface of the base; and a second wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the third integrated circuit die and at least one bond pad of the plurality of bond pads on the surface of the base.
Claim 19
Dependent Claim 169 words
A base having a surface for carrying a first integrated circuit die having a plurality of flip-chip bumps on a front-side surface and having a back-side surface and a second integrated circuit die having a plurality of bond pads on a front-side surface and having a back-side surface, the base comprising: a first plurality of flip-chip pads arranged in a first pattern on the surface of the base, the first plurality of flip-chip pads connecting at least one flip-chip bump of the plurality of flip-chip bumps on the front-side surface of the first integrated circuit die carried on the surface of the base; and a second plurality of wire-bondable pads connected to the flip-chip pads and arranged in a pattern on the surface of the base, the wire-bondable pads and connected by a wire bonded to at least one bond pad of the second plurality of bond pads on the front-side surface of the second integrated circuit die carried on the back-side surface of the first integrated circuit die.
Claim 20
Dependent Claim 169 words
A base having a surface for carrying a first integrated circuit die having a plurality of flip-chip bumps on a front-side surface and having a back-side surface and a second integrated circuit die having a plurality of bond pads on a front-side surface and having a back-side surface, the base comprising: a first plurality of flip-chip pads arranged in a first pattern on the surface of the base, the first plurality of flip-chip pads connecting at least one flip-chip bump of the plurality of flip-chip bumps on the front-side surface of the first integrated circuit die carried on the surface of the base; and a second plurality of wire-bondable pads connected to the flip-chip pads and arranged in a pattern on the surface of the base, the wire-bondable pads and connected by a wire bonded to at least one bond pad of the second plurality of bond pads on the front-side surface of the second integrated circuit die carried on the back-side surface of the first integrated circuit die.
Claim 21
Dependent Claim 28 words
The base of claim 14 wherein the first plurality of flip-chip pads and the second plurality of wire-bondable pads are interconected in a singly layer of the base.
Claim 22
Dependent Claim 27 words
The base of claim 14 wherein the first plurality of flip-chip pads and the second plurality of wire-bondable pads are interconnected in multiple layers of the base.
Claim 23
Dependent Claim 211 words
An electronic device comprising: a printed circuit board having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire bondable pad of the second plurality of wire-bondable pads on the surface of the printed circuit board; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon and at least one flip-chip bump of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one wire-bondable pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 24
Dependent Claim 211 words
An electronic device comprising: a printed circuit board having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire bondable pad of the second plurality of wire-bondable pads on the surface of the printed circuit board; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon and at least one flip-chip bump of the plurality of flip-chip bumps connected to at least one flip-chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least one wire-bondable pad of the second plurality of wire-bondable pads on the surface of the base.
Claim 25
Dependent Claim 212 words
An electronic device comprising: a printed circuit board having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire-bondable pad of the second plurality of wire-bondable pads in multiple layers of the printed circuit board such that the second plurality of flip-chip pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon and at least one flip-chip bump of the plurality of flip-chip bumps connected to the at least one flip chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die in and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least wire-bondable pad on the surface of the base.
Claim 26
Dependent Claim 212 words
An electronic device comprising: a printed circuit board having a surface having a first plurality of flip-chip pads thereon and a second plurality of wire-bondable pads thereon, at least one flip-chip pad of the first plurality of flip-chip pads connected to at least one wire-bondable pad of the second plurality of wire-bondable pads in multiple layers of the printed circuit board such that the second plurality of flip-chip pads; a first integrated circuit die having opposing front-side and back-side surfaces, the front-side surface having a plurality of flip-chip bumps thereon and at least one flip-chip bump of the plurality of flip-chip bumps connected to the at least one flip chip pad of the first plurality of flip-chip pads on the surface of the base; a second integrated circuit die having opposing front-side and back-side surfaces, the back-side surface of the second integrated circuit die attached to the back-side surface of the first integrated circuit die in and the front-side surface of the second integrated circuit die having a plurality of bond pads thereon; and at least one wire connected to at least one bond pad of the plurality of bond pads on the front-side surface of the second integrated circuit die and at least wire-bondable pad on the surface of the base.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-10-25 2003-04-26 2003-10-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-10-25 2007-04-26 2007-10-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-10-25 2011-04-26 2011-10-26 $7700.00 Window Closed / Lapsed

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