US4815199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacutring a thermal imaging device with thermally insulated sensor elements
Assignee: US Philips Corp
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Filing: 1986-10-20
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Granted: 1989-03-28
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Expires: 2006-10-20
Abstract
Abstract A thermal imaging device is manufactured by providing electrodes on opposite sides of a slab of ferroelectric or pyroelectric material. A sheet of electrically and thermally insulating material is bonded to the signal electrode layer on one side of the slab. An electrically conductive layer is provided on the insulating sheet. An array of spaced bores is then formed. Each bore extends through the electrically conductive layer down to the signal layer. The bores are then coated with electrically conductive material to electrically connect the signal electrode layer to the electrically conductive layer. Thereafter, a pattern of channels is formed surrounding the bores. The channels extend through the electrically conductive layer down to the slab, so as to form separate pillars of insulating material from the insulating sheet, and separate signal electrodes from the signal layer. Finally, the electrically conductive coated bores are connected to a circuit substrate by way of solder bumps.
Inventors
- 👤 Michael D. Jenner
- 👤 Joy A. Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:55
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/34; H; H10; H10N; H10N15/00; H10N15/10; Y; Y10; Y10T; Y10T29/00; Y10T29/42; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A method of manufacturing a thermal imaging device, said method comprising the steps of: providing a slab of ferroelectric or pyroelectric material having first and second opposite surfaces; providing an infrared-permeable common electrode on the first surface; providing a signal electrode layer on the second surface; bonding a sheet of electrically and thermally insulating material to the signal electrode layer; providing an electrically conductive layer on the insulating sheet; forming an array of spaced bores, said bores extending through the electrically conductive layer down to the signal electrode layer; coating the bores with electrically conductive material to electrically connect the signal electrode layer to the electrically conductive layer; forming a pattern of channels surrounding the bores, said channels extending through the electrically conductive layer down to the slab, so as to form separate pillars of insulating material from the insulating sheet and separate signal electrodes from the signal electrode layer; and electrically connecting the electrically conductive coated bores to a circuit substrate by way of solder bumps.
Claim 2
Independent Claim
167 words
A method of manufacturing a thermal imaging device, said method comprising the steps of: providing a slab of ferroelectric or pyroelectric material having first and second opposite surfaces; providing an infrared-permeable common electrode on the first surface; providing a signal electrode layer on the second surface; bonding a sheet of electrically and thermally insulating material to the signal electrode layer; providing an electrically conductive layer on the insulating sheet; forming an array of spaced bores, said bores extending through the electrically conductive layer down to the signal electrode layer; coating the bores with electrically conductive material to electrically connect the signal electrode layer to the electrically conductive layer; forming a pattern of channels surrounding the bores, said channels extending through the electrically conductive layer down to the slab, so as to form separate pillars of insulating material from the insulating sheet and separate signal electrodes from the signal electrode layer; and electrically connecting the electrically conductive coated bores to a circuit substrate by way of solder bumps.
Claim 3
Dependent Claim
30 words
A method as claimed in claim 1, characterized in that the bores extend down to the slab, and the electrically conductive coating on each bore extends down to the slab.
Claim 4
Dependent Claim
16 words
A method as claimed in claim 1, characterized in that the channels extend into the slab.
Claim 5
Dependent Claim
24 words
A method as claimed in claim 3, characterized in that the insulating sheet is bonded to the signal electrode layer by a thermosetting adhesive.
Claim 6
Dependent Claim
31 words
A method as claimed in claim 4, characterized in that the insulating sheet comprises a stack of thermally insulating plates bonded together by adhesive films disposed between each pair of plates.
Claim 7
Dependent Claim
30 words
A method as claimed in claim 5, characterized in that the sizes of the bores in the plates increase in the direction from the signal electrode to the circuit substrate.
References Cited (Backward Citations)
US4009516A
Cited
US4383174A
Cited
JPS5677730A
Cited
US4354109A
Cited
US4593456A
Cited
US4663529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |