Patent US6018192A successfully refreshed from Google Patents.
US6018192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic device with a thermal control capability
Assignee: NXP USA Inc
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Filing: 1998-07-30
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Granted: 2000-01-25
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Expires: 2018-07-30
Abstract
Abstract An electronic device (10) having a thermal control capability is disclosed. The electronic device includes a substrate (16), a signal conductive region (26) disposed on at least a portion of the substrate, the signal conductive region configured to provide a signal path, and a first semiconductor die (12) having an active surface (18) and a back surface (20). The back surface is configured with a plurality of bubbler cavities positioned to receive a cooling fluid (24). In addition, the first semiconductor die includes a first plurality of solder bumps (30) disposed on the active surface, the first plurality of solder bumps contiguous with, and electrically coupling the active surface to the signal conductive region. Further, an electrically reactive metal region (402) in communication with the signal conductive region is sized to provide a location for real-time iterative tuning of the electronic device.
Inventors
- 👤 Loren Francis Root
- 👤 Maninder Singh Sehmbey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:34
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/47; H10W44/00; H10W44/20; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
124 words
An electronic device, comprising: a substrate; a signal conductive region disposed on at least a portion of the substrate, the signal conductive region configured to provide a signal path; a first semiconductor die disposed on the signal conductive region, the first semiconductor die having an active surface and a back surface, the back surface configured with a plurality of bubbler cavities positioned to receive a cooling fluid; a plurality of solder bumps disposed on the active surface, the plurality of solder bumps contiguous with, and electrically coupling the active surface to the signal conductive region; and an electrically reactive metal region in communication with the signal conductive region, the electrically reactive metal region providing a location for real-time iterative tuning of the electronic device.
Claim 2
Dependent Claim
124 words
An electronic device, comprising: a substrate; a signal conductive region disposed on at least a portion of the substrate, the signal conductive region configured to provide a signal path; a first semiconductor die disposed on the signal conductive region, the first semiconductor die having an active surface and a back surface, the back surface configured with a plurality of bubbler cavities positioned to receive a cooling fluid; a plurality of solder bumps disposed on the active surface, the plurality of solder bumps contiguous with, and electrically coupling the active surface to the signal conductive region; and an electrically reactive metal region in communication with the signal conductive region, the electrically reactive metal region providing a location for real-time iterative tuning of the electronic device.
Claim 3
Dependent Claim
21 words
The electronic device according to claim 1, further comprising: a second semiconductor die in communication with the electrically reactive metal region.
Claim 4
Dependent Claim
15 words
The electronic device according to claim 2, wherein the second semiconductor die comprises a capacitor.
Claim 5
Dependent Claim
43 words
The electronic device according to claim 1, wherein the plurality of bubbler cavities further comprises: a plurality of metal layers coupled to the back surface of the first semiconductor die, the plurality of metal layers formed to create the plurality of bubbler cavities.
Claim 6
Dependent Claim
68 words
The electronic device according to claim 1, further comprising: a polymeric underfill disposed on a portion of the signal conductive region not contiguous with the solder bumps, and an exposed portion of the substrate proximate to and under the first semiconductor die, and having a thickness necessary to surround the first semiconductor die while allowing a total exposure of the plurality of bubbler cavities to the cooling fluid.
Claim 7
Dependent Claim
47 words
The electronic device according to claim 5, further comprising: a ground metal layer disposed on the polymeric underfill, the back surface of the first semiconductor die, and a back surface of the second semiconductor die, the ground metal layer providing an electrical grounding for the electronic device.
Claim 8
Dependent Claim
23 words
The electronic device according to claim 1, wherein the electrically reactive metal region is sized to allow laser tuning of the electronic device.
Claim 9
Dependent Claim
12 words
The electronic device according to claim 1, wherein the substrate comprises ceramic.
Claim 10
Dependent Claim
18 words
The electronic device according to claim 1, wherein the first semiconductor device comprises a radio frequency power transistor.
Claim 11
Dependent Claim
165 words
An electronic device, comprising: a substrate having a top side and a bottom side; a signal conductive region disposed on at least a portion of the top side, the signal conductive region configured to provide a portion of an electrical pathway for a radio frequency signal; a first radio frequency component disposed on a first portion of the signal conductive region, the first radio frequency component having an first active surface and a first back surface, the first back surface configured with a first plurality of bubbler cavities positioned to receive a cooling fluid; a first plurality of solder bumps flip-chip bonded to the first active surface, the first plurality of solder bumps providing electrical coupling of the first active surface to the signal conductive region; and an electrically reactive metal region disposed on a portion of the bottom side and in communication with the signal conductive region, the electrically reactive metal region configured to allow real-time iterative tuning of the first radio frequency component.
Claim 12
Dependent Claim
165 words
An electronic device, comprising: a substrate having a top side and a bottom side; a signal conductive region disposed on at least a portion of the top side, the signal conductive region configured to provide a portion of an electrical pathway for a radio frequency signal; a first radio frequency component disposed on a first portion of the signal conductive region, the first radio frequency component having an first active surface and a first back surface, the first back surface configured with a first plurality of bubbler cavities positioned to receive a cooling fluid; a first plurality of solder bumps flip-chip bonded to the first active surface, the first plurality of solder bumps providing electrical coupling of the first active surface to the signal conductive region; and an electrically reactive metal region disposed on a portion of the bottom side and in communication with the signal conductive region, the electrically reactive metal region configured to allow real-time iterative tuning of the first radio frequency component.
Claim 13
Dependent Claim
104 words
The electronic device according to claim 10, further comprising: a second radio frequency component disposed on a second portion of the signal conductive region, the second radio frequency component having an second active surface and a second back surface, the second back surface configured with a second plurality of bubbler cavities positioned to receive the cooling fluid, and the second radio frequency component in communication with the electrically reactive metal region; and a second plurality of solder bumps flip-chip bonded to the second active surface, the second plurality of solder bumps providing electrical coupling of the second active surface to the signal conductive region.
Claim 14
Dependent Claim
26 words
The electronic device according to claim 11, wherein the electrically reactive metal region is configured to allow real-time iterative tuning of the second radio frequency component.
Claim 15
Dependent Claim
110 words
The electronic device according to claim 12, wherein the first and second plurality of bubbler cavities comprise: a plurality of differential etch rate back metal layers disposed on the first and second back surfaces of the first and second radio frequency components, each of the plurality of differential etch rate back metal layers having a property of being chemically etched at different rates to yield a desired shape; and a photo imagable etch resist layer disposed on a top surface of the plurality of differential etch rate back metal layers, the photo imagable etch resist layer forming a bubbler cavity template therethrough, and having a property of resisting chemical etching.
Claim 16
Dependent Claim
54 words
The electronic device according to claim 12, wherein the first and second plurality of bubbler cavities comprise: a photo imagable etch resist layer disposed on the first and second back surfaces of the first and second radio frequency components to create a bubbler cavity template therethrough, and having a property of resisting chemical etching.
Claim 17
Dependent Claim
127 words
The electronic device according to claim 12, further comprising: a polymeric underfill disposed on an exposed portion of the top side of the substrate and an exposed portion of the signal conductive region, the polymeric underfill having a first thickness equivalent to a thickness between the first active surface and the exposed portion of the top side of the substrate, the first thickness allowing an exposure of the first plurality of the bubbler cavities to the cooling fluid, and having a second thickness equivalent to a thickness between the second active surface and the exposed portion of the top side of the substrate, the second thickness allowing an exposure of the second plurality of the bubbler cavities to the cooling fluid, and having a continuous deposition thereon.
Claim 18
Dependent Claim
38 words
The electronic device according to claim 15, further comprising: a conductive ground metal layer disposed on the polymeric underfill and a remaining portion of the substrate, the ground metal layer providing an electrical grounding for the electronic device.
Claim 19
Dependent Claim
161 words
The electronic device according to claim 16, further comprising: a circuit metalization footprint dosposed on the bottom side, the circuit metalization footprint having a RF output metal portion for receiving the radio frequency signal, a RF output metal portion for outputting an amplified radio frequency signal, and a first and second direct current input for applying a direct current to the circuit metalization footprint; a plurality of chip components electrically coupled to the circuit metalization footprint; a first array of conductive vias perpedicularly disposed in the substrate between the circuit metalization footprint and the signal conductive regions, the first array of conductive vias providing a through-put capability for the radio frequency signal to the first radio frequency component; and a second array of conductive vias perpedicularly disposed in the substrate between the circuit metalization footprint and the signal conductive regions, the second array of conductive vias providing a through-put capability for the radio frequency signal to the second radio frequency component.
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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) | 2003-01-24 | 2003-07-26 | 2004-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-24 | 2007-07-26 | 2008-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-24 | 2011-07-26 | 2012-01-25 | $7700.00 | Window Closed / Lapsed |