US4937423A
Expired / Lapsed
US
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Method of disconnecting a short-circuited part between mutually opposed electrodes
Assignee: Canon Inc
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Filing: 1988-08-12
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Granted: 1990-06-26
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Expires: 2008-08-12
Abstract
Abstract A method of disconnecting a short-circuited part between upper and lower electrodes is provided which comprises the steps of; (a) forming a cell by placing one upon another a first substrate provided with a common electrode and a second substrate provided with opposed electrodes in the manner that said common electrode and said opposed electrode may form a plurality of mutually opposed portions; (b) detecting, among the plurality of mutually opposed portions, a mutually opposed portion at which a short circuit has occurred; and (c) disconnecting by insulation a short-circuited site present at the mutually opposed portion from the common electrode or opposed electrode.
Inventors
- 👤 Satoshi Yoshihara
- 👤 Yuichi Masaki
- 👤 Takashi Enomoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:16
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/13439
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
114 words
A method of disconnecting a short-circuited part comprising: the steps of: providing a first substrate comprising a plurality of upper side electrodes and a second substrate comprising a plurality of lower side electrode, wherein said first and second substrates each have alignment control films subjected to a monoaxial alignment treatment; orienting said first and second substrates to provide a gap thereinbetween such that said upper and lower electrodes form a plurality of mutually opposed portions; detecting whether or not a short-circuit has occurred among said plurality of mutually opposed portions; and disconnecting the short-circuited site present at the mutually opposed portion from at least one of said upper side of said lower side electrodes.
Claim 2
Independent Claim
114 words
A method of disconnecting a short-circuited part comprising: the steps of: providing a first substrate comprising a plurality of upper side electrodes and a second substrate comprising a plurality of lower side electrode, wherein said first and second substrates each have alignment control films subjected to a monoaxial alignment treatment; orienting said first and second substrates to provide a gap thereinbetween such that said upper and lower electrodes form a plurality of mutually opposed portions; detecting whether or not a short-circuit has occurred among said plurality of mutually opposed portions; and disconnecting the short-circuited site present at the mutually opposed portion from at least one of said upper side of said lower side electrodes.
Claim 3
Dependent Claim
20 words
The method of disconnecting a short-circuited part according to claim 1, wherein said disconnecting step comprises irradiating a laser beam.
Claim 4
Dependent Claim
26 words
The method of disconnecting a short-circuited part according to claim 2, wherein said laser beam is a YAG, a ruby or a CO 2 laser beam.
Claim 5
Dependent Claim
29 words
The method of disconnecting a short-circuited part according to claim 1, wherein said short-circuited site is disconnected by insulation from the upper side electrode and the lower side electrode.
Claim 6
Dependent Claim
59 words
The method of disconnecting a short-circuited part according to claim 1, wherein said disconnecting step comprises insulating the short-circuited site present at the mutually opposed portion from said upper side electrode and lower side electrode, such that the electrical integrity of the upper and lower side electrodes from which the short-circuited site is disconnected is maintained after such disconnection.
Claim 7
Dependent Claim
38 words
The method of disconnecting a short-circuited part according to claim 1, wherein the plurality of said upper side electrodes function either as scanning or signal electrodes and the plurality of said lower side electrodes function as the other.
Claim 8
Dependent Claim
40 words
The method of disconnecting a short-circuited part according to claim 1 wherein said alignment control film is formed from at least one material selected from the group consisting of polyimide, polyamidoimide, polyester imide, polyamide, polyvinyl alcohol and SiO 2 .
Claim 9
Dependent Claim
38 words
The method of disconnecting a short-circuit part according to claim 7, wherein an insulating film is provided between said alignment control film and said upper side electrodes, and between said alignment control film and said lower side electrodes.
Claim 10
Dependent Claim
27 words
The method of disconnecting a short-circuited part according to claim 8, wherein said insulating film comprises SiO 2 , TiO 2 or Ta 2 O 5 .
Claim 11
Dependent Claim
20 words
The method of disconnecting a short-circuited part according to claim 1, wherein said monoaxial alignment treating is a rubbing treatment.
Claim 12
Dependent Claim
21 words
The method of disconnecting a short-circuited part according to claim 1, wherein said monoaxial alignment treatment is an oblique evaporation treatment.
Claim 13
Dependent Claim
20 words
The method of disconnecting a short-circuited part according to claim 7, wherein said disconnecting step comprises irradiating a laser beam.
Claim 14
Dependent Claim
24 words
The method of disconnecting a short-circuited part according to claim 12, wherein said laser beam is a YAG, ruby or CO 2 laser beam.
Claim 15
Dependent Claim
32 words
The method of disconnecting a short-circuited part according to claim 7, wherein said short-circuited site is disconnected by insulating the upper side electrode from both the upper and the lower side electrodes.
Claim 16
Dependent Claim
59 words
The method of disconnecting a short-circuited part according to claim 7, wherein said disconnecting step comprises insulating the short-circuited site present at the mutually opposed portion from the upper side electrode and the lower side electrode, such that the integrity of the upper and lower side electrodes from which the short-circuited site is disconnected is maintained after such disconnection.
Claim 17
Dependent Claim
35 words
The method of disconnecting a short-circuited part according to claim 7, wherein a plurality of the upper side electrodes function as scanning electrodes, and a plurality of the lower side electrodes function as signal electrodes.
Claim 18
Dependent Claim
38 words
The method of disconnecting a short-circuited part according to claim 7, wherein an insulating film is provided between said alignment control film and the upper side electrode, and between said alignment control film and the lower side electrodes.
Claim 19
Dependent Claim
27 words
The method of disconnecting a short-circuited part according to claim 17, wherein said insulating film comprises SiO 2 , TiO 2 or Ta 2 O 5 .
Claim 20
Dependent Claim
20 words
The method of disconnecting a short-circuited part according to claim 7, wherein the monoaxial alignment treating is a rubbing treatment.
Claim 21
Dependent Claim
21 words
The method of disconnecting a short-circuited part according to claim 7, wherein the monoaxial alignment treatment is an oblique evaporation treatment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |