US5362927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thick film hybrid circuit board device
Assignee: Toshiba Lighting and Technology Corp
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Filing: 1993-07-19
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Granted: 1994-11-08
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Expires: 2013-07-19
Abstract
Abstract A thick film hybrid circuit board device is formed by laminating a first layer and a second layer on an insulative base board. The second layer being overlapped between over the insulative base board and the first layer has a recessed portion located at cross portion where peripheral edge portion of the first layer and a peripheral edge portion of the second layer are crossed. The recessed portion is formed in the shape of being recessed inwardly of the second layer. Bleedings generated from the second layer consisting of paste are held in the recessed portion, so that short circuit accidents caused by the bleedings mutually combined are effectively prevented.
Inventors
- 👤 Shiro Ezaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:38
CPC Classifications
H; H10; H10D; H10D86/00; H10D86/80; H10D86/85; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49147; Y10T29/49151; Y10T29/49155; Y10T29/49156
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
A thick film hybrid circuit board device manufactured by utilizing a screen printing process, said circuit board device comprising: an insulative base board as a base plate; a first layer formed on said insulative base board; a second layer formed so as to be overlapped with a surface of said first layer and a surface of said insulative base board, said second layer being provided with an inwardly recessed portion formed at a cross portion where a peripheral edge portion of said first layer and a peripheral edge portion of said second layer are crossed; and a bleeded portion at least partially filling said recessed portion said bleeded portion being generated from said second layer.
Claim 2
Dependent Claim
115 words
A thick film hybrid circuit board device manufactured by utilizing a screen printing process, said circuit board device comprising: an insulative base board as a base plate; a first layer formed on said insulative base board; a second layer formed so as to be overlapped with a surface of said first layer and a surface of said insulative base board, said second layer being provided with an inwardly recessed portion formed at a cross portion where a peripheral edge portion of said first layer and a peripheral edge portion of said second layer are crossed; and a bleeded portion at least partially filling said recessed portion said bleeded portion being generated from said second layer.
Claim 3
Dependent Claim
22 words
A thick film hybrid circuit board device according to claim 1, the recessed portion is substantially filled up with said bleeded portion.
Claim 4
Dependent Claim
28 words
A thick film hybrid circuit board device according to claim 1, wherein said recessed portion is formed by cutting off in substantially a triangular shape said second layer.
Claim 5
Dependent Claim
28 words
A thick film hybrid circuit board device according to claim 1, wherein said recessed portion is formed by cutting off in substantially a semi-circular shape said second layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-07 | 1998-05-09 | 1998-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-07 | 2002-05-09 | 2002-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-07 | 2006-05-09 | 2006-11-08 | $7700.00 | Window Closed / Lapsed |