US5270555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyroelectric IR-sensor with a molded inter connection device substrate having a low thermal conductivity coefficient
Assignee: Murata Manufacturing Co Ltd
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Filing: 1992-05-07
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Granted: 1993-12-14
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Expires: 2012-05-07
Abstract
Abstract A pyroelectric IR-sensor in which a pyroelectric light receiving element is mounted on a MID substrate or a ceramic substrate having a thermal conductivity less than 0.02 cal/cm·sec·°C. Both ends of the pyroelectric light receiving element are supported by the substrate, with the central portion of the pyroelectric light receiving element being spaced from the substrate. Chip parts are mounted on the substrate.
Inventors
- 👤 Satoru Ito
- 👤 Michihiro Murata
- 👤 Norio Fukui
- 👤 Keizou Yamamoto
- 👤 Tetsujiro Sawao
- 👤 Satoshi Awata
- 👤 Yasuo Tada
- 👤 Satoru Kawabata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:55
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/34; H; H10; H10N; H10N15/00; H10N15/10; B; B29; B29L; B29L2031/00; B29L2031/34; B29L2031/3493
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
149 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a first portion of a molded catalytic resin having a surface with a circuit thereon, and a molded second portion of a non-catalytic resin with an insulating surface and overlapping said first portion, said light receiving element being connected to said circuit; and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 2
Dependent Claim
149 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a first portion of a molded catalytic resin having a surface with a circuit thereon, and a molded second portion of a non-catalytic resin with an insulating surface and overlapping said first portion, said light receiving element being connected to said circuit; and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 3
Dependent Claim
118 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a thermoplastic resin with 70% polyester-sulfon resin (PES) and 30% fiberglass; and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 4
Dependent Claim
118 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a thermoplastic resin with 70% polyester-sulfon resin (PES) and 30% fiberglass; and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 5
Dependent Claim
111 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; and MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a polyestersulfone resin (PES); and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 6
Dependent Claim
111 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; and MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a polyestersulfone resin (PES); and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 7
Dependent Claim
111 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., and MID substrate comprising a polyesterimido resin (PEI), and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 8
Dependent Claim
111 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., and MID substrate comprising a polyesterimido resin (PEI), and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 9
Dependent Claim
110 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced form said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a polysulfone (PSO); and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 10
Dependent Claim
110 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced form said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C., said MID substrate comprising a polysulfone (PSO); and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 11
Dependent Claim
103 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C.; and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 12
Dependent Claim
103 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm·sec·°C.; and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 13
Dependent Claim
113 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm· sec·°C., said MID substrate comprising a liquid crystal polymer (LCP); and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 14
Dependent Claim
113 words
A pyroelectric IR-sensor comprising: a pyroelectric light receiving element having two connections at opposite ends thereof; an MID substrate including two spaced element supporting portions with conductive layers thereon, said element supporting portions supporting said element with said connectors being physically supported on and electrically connected to said conductive layers, the central portion of said substrate between said supporting portions being recessed whereby the center of said light receiving element is spaced from said MID substrate, said MID substrate having a thermal conductivity lower than 0.02 cal/cm· sec·°C., said MID substrate comprising a liquid crystal polymer (LCP); and circuit element chip parts mounted on said MID substrate and connected to said conductive layers.
Claim 15
Dependent Claim
21 words
A pyroelectric IR-sensor as set forth in claim 1, wherein said pyroelectric light receiving element is a dual-element light receiving element.
Claim 16
Dependent Claim
19 words
A pyroelectric IR-sensor as set forth in claim 1, wherein said chip parts comprise a resistor and an FET.
Claim 17
Dependent Claim
22 words
The pyroelectric sensor of claim 1, wherein said circuit element chip parts are mounted in the recessed center portion of said substrate.
References Cited (Backward Citations)
US4682030A
Cited
US4806763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |