EP0414358A2
Expired / Lapsed
EP
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An active matrix board
Assignee: Sharp Corp
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Filing: 1990-07-05
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Granted: —
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Expires: 2010-07-05
Abstract
Abstract An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, scan lines that are disposed in a parallel manner between the individual pixel electrodes, signal lines that intersect the scan lines, and at least one insulating film that covers the scan lines, wherein a protective layer is disposed on the scan lines so as to sandwich the insulating film therebetween, whereby scan lines and/or addition capacity lines are less liable to troubles such as increased resistances, line breakdowns, or peelings, so that the active matrix board makes it possible to manufacture display apparatuses at higher yields and thus reduce the cost of manufacturing such apparatuses.
Inventors
- 👤 Mikio Katayama
- 👤 Hidenori Negoto
- 👤 Hiroaki Kato
- 👤 Akihiko Imaya
- 👤 Yuzuru Kanemori
- 👤 Kiyoshi Nakazawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 07:52
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136213; G02F1/136286; G02F1/13629
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
68 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, scan lines that are disposed in a parallel manner between said individual pixel electrodes, signal lines that intersect said scan lines, and at least one insulating film that covers said scan lines, wherein a protective layer is disposed on said scan lines so as to sandwich said insulating film therebetween.
Claim 2
Dependent Claim
68 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, scan lines that are disposed in a parallel manner between said individual pixel electrodes, signal lines that intersect said scan lines, and at least one insulating film that covers said scan lines, wherein a protective layer is disposed on said scan lines so as to sandwich said insulating film therebetween.
Claim 3
Dependent Claim
78 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, an addition capacity electrode that faces said pixel electrode, an addition capacity line that is connected to said addition capacity electrode, signal lines that intersect said addition capacity line, and at least one insulating film that covers said addition capacity line, wherein a protective layer is disposed on said addition capacity line so as to sandwich said insulating film therebetween.
Claim 4
Dependent Claim
78 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, an addition capacity electrode that faces said pixel electrode, an addition capacity line that is connected to said addition capacity electrode, signal lines that intersect said addition capacity line, and at least one insulating film that covers said addition capacity line, wherein a protective layer is disposed on said addition capacity line so as to sandwich said insulating film therebetween.
Claim 5
Dependent Claim
42 words
An active matrix board according to claim 1, which further comprises TFTs that have said insulating film functioning as a gate insulating film, said protective layer being made of the same material as a layer present right above said gate insulating film.
Claim 6
Dependent Claim
42 words
An active matrix board according to claim 2, which further comprises TFTs that have said insulating film functioning as a gate insulating film, said protective layer being made of the same material as a layer present right above said gate insulating film.
Claim 7
Dependent Claim
58 words
An active matrix board according to claim 1, wherein said protective layer comprises a first protective layer that is disposed on said scan lines so as to sandwich said insulating film therebetween, and a second protective layer that is disposed in areas on said first protective layer in which said signal lines do not intersect said scan lines.
Claim 8
Dependent Claim
58 words
An active matrix board according to claim 2, wherein said protective layer comprises a first protective layer that is disposed on said addition capacity line so as to sandwich said insulating film, and a second protective layer that is disposed in areas on said first protective layer in which said signal lines do not intersect said scan lines.
Claim 9
Dependent Claim
78 words
An active matrix board according to claim 5, which further comprises TFTs that have said insulating film functioning as a gate insulating film, wherein said first protective layer is made of the same material as a layer present right above said gate insulating film, and said second protective layer is made of the same material as a layer located between the source and drain electrodes of said TFT and a layer present right above said gate insulating film.
Claim 10
Dependent Claim
78 words
An active matrix board according to claim 6, which further comprises TFTs that have said insulating film functioning as a gate insulating film, wherein said first protective layer is made of the same material as a layer present right above said gate insulating film, and said second protective layer is made of the same material as a layer located between the source and drain electrodes of said TFT and a layer present right above said gate insulating film.
Claim 11
Dependent Claim
69 words
An active matrix board according to claim 1, wherein said protective layer comprises a first protective layer that is disposed on said scan line so as to sandwich said insulating film, a second protective layer that is disposed on said first protective layer, and a third protective layer that is disposed in areas on said second protective layer in which said signal lines do not intersect said scan lines.
Claim 12
Dependent Claim
70 words
An active matrix board according to claim 2, wherein said protective layer comprises a first protective layer that is disposed on said addition capacity line so as to sandwich said insulating film, a second protective layer that is disposed on said first protective layer, and a third protective layer that is disposed in areas on said second protective layer in which said signal lines do not intersect said scan lines.
Claim 13
Dependent Claim
103 words
An active matrix board according to claim 9, which further comprises TFTs that have said insulating film functioning as a gate insulating film, wherein said first protective layer is made of the same material as a layer present right above said gate insulating film, said second protective layer is made of the same material as a layer centrally present immediately above a layer right above said gate insulating film, and said third protective layer is made of the same material as a layer located between the source and drain electrodes of said TFT and a layer present right above said gate insulating film.
Claim 14
Dependent Claim
103 words
An active matrix board according to claim 10, which further comprises TFTs that have said insulating film functioning as a gate insulating film, wherein said first protective layer is made of the same material as a layer present right above said gate insulating film, said second protective layer is made of the same material as a layer centrally present immediately above a layer right above said gate insulating film, and said third protective layer is made of the same material as a layer located between the source and drain electrodes of said TFT and a layer present right above said gate insulating film.
Claim 15
Dependent Claim
63 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, and scan lines that are disposed in a parallel manner between said individual pixel electrodes, wherein each of said scan lines comprises a lower scan line that is discontinuously disposed and an upper scan line that covers said lower scan line and is continuously disposed.
Claim 16
Dependent Claim
63 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, and scan lines that are disposed in a parallel manner between said individual pixel electrodes, wherein each of said scan lines comprises a lower scan line that is discontinuously disposed and an upper scan line that covers said lower scan line and is continuously disposed.
Claim 17
Dependent Claim
65 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, and addition capacity lines that are disposed in a parallel manner between said individual pixel electrodes, wherein each of said addition capacity lines comprises a lower capacity line that is discontinuously disposed and an upper capacity line that covers said lower capacity line and is continuously disposed.
Claim 18
Dependent Claim
65 words
An active matrix board comprising pixel electrodes that are disposed in a matrix fashion on an insulating substrate, and addition capacity lines that are disposed in a parallel manner between said individual pixel electrodes, wherein each of said addition capacity lines comprises a lower capacity line that is discontinuously disposed and an upper capacity line that covers said lower capacity line and is continuously disposed.
References Cited (Backward Citations)
No citation records indexed.
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