US5276540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Active matrix substrate with conductive film covering transparent conductive film portion connecting additional and non-additional capacitance portions of pixel electrode
Assignee: Sharp Corp
•
Filing: 1991-11-29
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Granted: 1994-01-04
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Expires: 2011-11-29
Abstract
Abstract An active matrix substrate which includes a plurality of pixel electrodes arranged in a matrix over an insulating substrate, with each of the pixel electrodes having a transparent conductive film including an additional capacitance portion and a non-additional capacitance portion. Additional capacitance electrodes are capacitively coupled to said additional capacitance portions through at least one insulating film. A conductive film electrically connects the additional capacitance portion to the non-additional capacitance portion of each of the pixel electrodes. The transparent conductive film of each of said pixel electrodes includes a portion for covering the conductive film, the portion for covering having a wider width than a width of the conductive film.
Inventors
- 👤 Masaya Okamoto
- 👤 Mikio Katayama
- 👤 Yuzuru Kanemori
- 👤 Katsuhiro Kawai
- 👤 Hiroshi Fujiki
- 👤 Makoto Tachibana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:04
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/136; G02F1/1362; G02F1/136213; G02F1/136259
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
An active matrix substrate comprising: a plurality of pixel electrodes arranged in a matrix over an insulating substrate, each of said pixel electrodes having a transparent conductive film including an additional capacitance portion and a non-additional capacitance portion; additional capacitance electrodes capacitively coupled to said additional capacitance portions through at least one insulating film; and a conductive film electrically connecting the additional capacitance portion to the non-additional capacitance portion of each of said pixel electrodes; wherein the transparent conductive film of each of said pixel electrodes includes a portion for covering the conductive film, said portion for covering having a wider width than a width of the conductive film.
Claim 2
Dependent Claim
109 words
An active matrix substrate comprising: a plurality of pixel electrodes arranged in a matrix over an insulating substrate, each of said pixel electrodes having a transparent conductive film including an additional capacitance portion and a non-additional capacitance portion; additional capacitance electrodes capacitively coupled to said additional capacitance portions through at least one insulating film; and a conductive film electrically connecting the additional capacitance portion to the non-additional capacitance portion of each of said pixel electrodes; wherein the transparent conductive film of each of said pixel electrodes includes a portion for covering the conductive film, said portion for covering having a wider width than a width of the conductive film.
Claim 3
Dependent Claim
117 words
An active matrix substrate comprising: a plurality of pixel electrodes arranged in a matrix on an insulating substrate, each of said pixel electrodes having a transparent conductive film including at least two additional capacitance portions and a non-additional capacitance portion; additional capacitance electrodes capacitively coupled to said additional capacitance portions through at least one insulating film; and conductive films for electrically connecting said at least two additional capacitance portions to said non-additional capacitance portion of each of said pixel electrodes; wherein the transparent conductive film of each of said pixel electrodes includes portions for covering the conductive films, each of said portions for covering having a wider width than a width of each of the conductive films.
Claim 4
Dependent Claim
117 words
An active matrix substrate comprising: a plurality of pixel electrodes arranged in a matrix on an insulating substrate, each of said pixel electrodes having a transparent conductive film including at least two additional capacitance portions and a non-additional capacitance portion; additional capacitance electrodes capacitively coupled to said additional capacitance portions through at least one insulating film; and conductive films for electrically connecting said at least two additional capacitance portions to said non-additional capacitance portion of each of said pixel electrodes; wherein the transparent conductive film of each of said pixel electrodes includes portions for covering the conductive films, each of said portions for covering having a wider width than a width of each of the conductive films.
Claim 5
Dependent Claim
145 words
An active matrix substrate comprising: a plurality of pixel electrodes arranged in a matrix over an insulating substrate, each of said pixel electrodes having a transparent conductive film including an additional capacitance portion and a non-additional capacitance portion; additional capacitance electrodes capacitively coupled to said additional capacitance portions through at least one insulating film; a conductive connector film electrically connecting the additional capacitance portion to the non-additional capacitance portion of each of said pixel electrodes; a covering portion of said transparent conductive film covering the connector film, said covering portion having a wider width than a width of the conductive film, said covering portion having a step region overlying an edge of said connector film adjacent said transparent conductive film, and a defect step cut in said covering portion substantially at said step region and where said covering portion conducts electricity around said step cut.
Claim 6
Dependent Claim
145 words
An active matrix substrate comprising: a plurality of pixel electrodes arranged in a matrix over an insulating substrate, each of said pixel electrodes having a transparent conductive film including an additional capacitance portion and a non-additional capacitance portion; additional capacitance electrodes capacitively coupled to said additional capacitance portions through at least one insulating film; a conductive connector film electrically connecting the additional capacitance portion to the non-additional capacitance portion of each of said pixel electrodes; a covering portion of said transparent conductive film covering the connector film, said covering portion having a wider width than a width of the conductive film, said covering portion having a step region overlying an edge of said connector film adjacent said transparent conductive film, and a defect step cut in said covering portion substantially at said step region and where said covering portion conducts electricity around said step cut.
References Cited (Backward Citations)
JPS5982769A
Cited
JPS59119322A
Cited
JPS60236266A
Cited
US4855805A
Cited
GB2175429A
Cited
JPS622420A
Cited
US4955697A
Cited
US4991939A
Cited
US4961629A
Cited
EP0328810A2
Cited
US5103330A
Cited
US5047819A
Cited
JPH01282522A
Cited
JPH01283519A
Cited
US5042918A
Cited
JPH02156227A
Cited
EP0375233A2
Cited
JPH02275927A
Cited
JPH02221936A
Cited
JPH02284120A
Cited
US5162901A
Cited
US5062690A
Cited
EP0438138A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-03 | 1997-07-05 | 1998-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-03 | 2001-07-05 | 2002-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-03 | 2005-07-05 | 2006-01-04 | $7700.00 | Window Closed / Lapsed |