Patent EP0372898A2 successfully refreshed from Google Patents.
EP0372898A2
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Active matrix display apparatus
Assignee: Sharp Corp
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Filing: 1989-12-05
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Granted: —
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Expires: 2009-12-05
Abstract
Abstract An active matrix display apparatus comprising a pair of substrates (1, 20), at least one of which is translucent, a display medium (18) which is located between the substrates and whose optical characteristics are modulated in response to applied voltage, picture element electrodes (5) disposed in a matrix at the inner surface of either one of the pair of substrates (1, 20), switching elements (6) electrically connected to the picture element electrodes (5), and spare switching elements (7) disposed close to the picture element electrodes (5) in a non-conductive state. An extension end (16a) of spare switching element (7) and one end of the picture element electrode (5) are disposed on a metal piece (24) so as to sandwich an insulating layer (11) therebetween, whereby a picture element defect caused by a malfunction of a switching element (6) can be readily corrected by forming a connection between an extension end (16a) and the corresponding picture element electrode (5).
Inventors
- 👤 Mikio Katayama
- 👤 Hiroaki Kato
- 👤 Kiyoshi Nakazawa
- 👤 Hidenori Negoto
- 👤 Yuzuru Kanemori
- 👤 Motokazu Inui
- 👤 Akihiko Imaya
- 👤 Takayoshi Nagayasu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 20:14
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/13624
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
An active matrix display apparatus comprising a pair of substrates (1, 20), at least one of which is translucent, a display medium (18) which is located between said substrates (1, 20) and whose optical characteristics are modulated in response to applied voltage, picture element electrodes (5) disposed in a matrix at the inner surface of either one of said pair of substrates (1, 20), switching elements (6) electrically connected to said picture element electrodes (5), and spare switching elements (7) disposed close to said picture element electrodes (5) in a non-conductive state, characterised in that an extension end (16a) of each of said spare switching elements (7) and each of said picture element electrodes (5) are disposed opposite each other in a non-conductive state so as to be capable of forming a connection (28) that is covered by an insulating protective coat (17) and isolated from said display medium (18).
Claim 2
Dependent Claim
150 words
An active matrix display apparatus comprising a pair of substrates (1, 20), at least one of which is translucent, a display medium (18) which is located between said substrates (1, 20) and whose optical characteristics are modulated in response to applied voltage, picture element electrodes (5) disposed in a matrix at the inner surface of either one of said pair of substrates (1, 20), switching elements (6) electrically connected to said picture element electrodes (5), and spare switching elements (7) disposed close to said picture element electrodes (5) in a non-conductive state, characterised in that an extension end (16a) of each of said spare switching elements (7) and each of said picture element electrodes (5) are disposed opposite each other in a non-conductive state so as to be capable of forming a connection (28) that is covered by an insulating protective coat (17) and isolated from said display medium (18).
Claim 3
Dependent Claim
49 words
An active matrix display apparatus according to claim 1, wherein, for forming said connection, the extension end (16a) of said spare switching element (7) and one end of said picture element electrode (5) are disposed on a metal piece (24) so as to sandwich an insulating layer (11) therebetween.
Claim 4
Dependent Claim
44 words
An active matrix display apparatus according to claim 1, wherein, for forming said connection, the extension end (16a) of said spare switching element (7) and one end of said picture element electrode (5) are disposed so as to sandwich an insulating layer (11) therebetween.
Claim 5
Dependent Claim
48 words
An active matrix display apparatus according to claim 2, wherein a through hole (27) is formed in a portion of said insulating film (11) on which either the extension end (16a) of said spare switching element (7) or the end of said picture element electrode (5) is disposed.
Claim 6
Dependent Claim
33 words
An active matrix display apparatus according to claim 1, wherein a cutout (5a) is formed in the vicinity of part of said picture element electrode (5) to be connected with said switching element.
Claim 7
Dependent Claim
152 words
An active matrix display apparatus comprising a pair of substrates (1, 20), at least one of which is translucent, a display medium (18) which is located between said substrates (1, 20) and whose optical characteristics are modulated in response to applied voltage, picture element electrodes (5) disposed in a matrix at the inner surface of either one of said pair of substrates (1, 20), switching elements (6) and spare switching elements (7) electrically connected to said picture element electrodes (5) respectively, and signal lines connected to said switching elements respectively, characterised by a connection region at which an extension end of a signal input terminal at each of said spare switching elements (7) and a branch wire branched from each of said signal lines are disposed opposite each other so as to be capable of forming a connection that is covered by a protective coat and isolated from said display medium (18).
Claim 8
Dependent Claim
152 words
An active matrix display apparatus comprising a pair of substrates (1, 20), at least one of which is translucent, a display medium (18) which is located between said substrates (1, 20) and whose optical characteristics are modulated in response to applied voltage, picture element electrodes (5) disposed in a matrix at the inner surface of either one of said pair of substrates (1, 20), switching elements (6) and spare switching elements (7) electrically connected to said picture element electrodes (5) respectively, and signal lines connected to said switching elements respectively, characterised by a connection region at which an extension end of a signal input terminal at each of said spare switching elements (7) and a branch wire branched from each of said signal lines are disposed opposite each other so as to be capable of forming a connection that is covered by a protective coat and isolated from said display medium (18).
Claim 9
Dependent Claim
44 words
An active matrix display apparatus according to claim 6, wherein, for forming said connection, the extension end of said spare switching element and one end of said picture element electrode are disposed on a metal piece so as to sandwich an insulating layer therebetween.
Claim 10
Dependent Claim
40 words
An active matrix display apparatus according to claim 6, wherein, for forming said connection, the extension end of said spare switching element and one end of said picture element electrode are disposed so as to sandwich an insulating layer therebetween.
Claim 11
Dependent Claim
43 words
An active matrix display apparatus according to claim 7, wherein a through hole is formed in a portion of said insulating film on which either the extension end of said spare switching element or the end of said picture element electrode is disposed.
References Cited (Backward Citations)
No citation records indexed.
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