US4882536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitive detector of position having electrodes and circuitry formed on a common integrated circuit
Assignee: Individual
•
Filing: 1988-12-12
•
Granted: 1989-11-21
•
Expires: 2008-12-12
Abstract
Abstract The capacitive detector of position between two supports (10 and 30) comprises a series of electrodes (11) on support (10) and a series of electrodes (13) on support (30). The electrodes (13) of support (30) and electronic circuitry (21) are formed on the lower face of an integrated circuit substrate (20) constituting the electronic part intended for the application of incremental potentials to the electrodes (13).
Inventors
- 👤 Hans U. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:37
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/24; G01D5/241; G01D5/2412; G01D5/2415
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
A capacitive detector of the relative position between two supports, one of these supports being displaceable along the other, one support comprising a series of electrodes, the second support being provided with electrodes and electronic circuitry making it possible to apply incremental potentials to the latter electrodes, the electrodes in one support facing those in the other support, characterized in that the electrodes on the second support and the electronic circuitry for applying the incremental potentials to the electrodes on the second support are formed in a common integrated circuit semiconductor substrate disposed facing the electrodes on the other support.
Claim 2
Dependent Claim
100 words
A capacitive detector of the relative position between two supports, one of these supports being displaceable along the other, one support comprising a series of electrodes, the second support being provided with electrodes and electronic circuitry making it possible to apply incremental potentials to the latter electrodes, the electrodes in one support facing those in the other support, characterized in that the electrodes on the second support and the electronic circuitry for applying the incremental potentials to the electrodes on the second support are formed in a common integrated circuit semiconductor substrate disposed facing the electrodes on the other support.
Claim 3
Dependent Claim
33 words
Device according to claim 1, characterized in that said electronic circuitry provided on the integrated circuit is connected to each electrode provided on said integrated circuit and generates the signals for each electrode.
Claim 4
Dependent Claim
39 words
Device according to claim 1, characterized in that the surface of the integrated circuit facing said other support is protected from external effects by at least one protection layer, said layer being spaced from said one of said supports.
Claim 5
Dependent Claim
53 words
Device according to claim 3, characterized in that the assembling of the integrated circuit is done by TAB technology, which consists in connecting the integrated circuit to the conductors of a flexible circuit, said integrated circuit and said flexible circuit being assembled on the surface of a cursor which faces said other support.
Claim 6
Dependent Claim
40 words
Device according to claim 2, characterized in that the electrodes provided on the integrated circuit present an elongated rectangular shape perpendicular to the axis of relative displacement between said supports and are arranged in series along the axis of displacement.
Claim 7
Dependent Claim
23 words
Device according to claim 2, characterized in that the electrodes form several juxtaposed rows, each row being parallel to the axis of displacement.
Claim 8
Dependent Claim
36 words
Device according to claim 5, characterized in that the electronic circuitry generates on the electrodes a substantially periodical electric configuration created from at least two different voltages, said configuration being shiftable by modification electrode by electrode.
Claim 9
Dependent Claim
42 words
Device according to claim 1, characterized in that the electrodes of said one support are disposed on a rotation body whose radius well exceeds the dimensions of the electrodes of said other support, the latter electrodes remaining flat and parallel between themselves.
Claim 10
Dependent Claim
36 words
Device according to claim 6, characterized in that the electronic circuitry generates on the electrodes a substantially periodical electric configuration created from at least two different voltages, said configuration being shiftable by modification electrode by electrode.
References Cited (Backward Citations)
US4420754A
Cited
US4638249A
Cited
US4543526A
Cited
US4743838A
Cited
US4586260A
Cited
US4636792A
Cited
US4788546A
Cited
US4694275A
Cited
JPH103318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |