Patent US4934045A successfully refreshed from Google Patents.
US4934045A
Expired / Lapsed
US
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Method of producing electric circuit patterns
Assignee: Semiconductor Energy Laboratory Co Ltd
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Filing: 1989-01-30
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Granted: 1990-06-19
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Expires: 2009-01-30
Abstract
Abstract A method of producing patterns consisting of buslines and two or more sets of lead lines. The lead lines are formed together with fragments of the buslines. Portions of the lead lines are coated with insulating films. The fragments of the buslines are coupled by forming compensatory buslines in alignment therewith.
Inventors
- 👤 Akira Mase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:00
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/46; H05K3/4685; H01; H01R; H01R12/00; H01R12/50; H01R12/59; H05K1/00; H05K1/02; H05K1/0286; H05K1/0287; H05K1/0289; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144; Y10T29/49155; Y10T29/49169
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A method of producing electric circuit patterns consisting of a plurality of buslines and two or more sets of lead lines, the lead lines of each set being coupled to said buslines respectively, said method comprising: forming two or more preceding patterns, each consisting of the lead lines of one of said sets and fragments of said buslines which have been already coupled, wherein the fragments belonging to each preceding pattern are spaced from those of the adjacent preceding patterns; coating an insulating film over portions of said preceding patterns of said sets that are located at sites on which said buslines are to be formed; electrically coupling the fragmented buslines of adjacent preceding patterns by coating compensatory buslines in alignment with the fragmented buslines over said insulating films; and connecting an electric device to each set of lead lines in advance of the electrical coupling step of said fragmented buslines.
Claim 2
Independent Claim
151 words
A method of producing electric circuit patterns consisting of a plurality of buslines and two or more sets of lead lines, the lead lines of each set being coupled to said buslines respectively, said method comprising: forming two or more preceding patterns, each consisting of the lead lines of one of said sets and fragments of said buslines which have been already coupled, wherein the fragments belonging to each preceding pattern are spaced from those of the adjacent preceding patterns; coating an insulating film over portions of said preceding patterns of said sets that are located at sites on which said buslines are to be formed; electrically coupling the fragmented buslines of adjacent preceding patterns by coating compensatory buslines in alignment with the fragmented buslines over said insulating films; and connecting an electric device to each set of lead lines in advance of the electrical coupling step of said fragmented buslines.
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein said preceding patterns consist of a plurality of "L" shaped conductive lines.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein said electric circuit pattern is designed for driving circuits of liquid crystal device.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said electric circuit pattern is designed for driving circuits of image sensor.
Claim 6
Dependent Claim
30 words
The method of claim 1 further comprising a step of checking the electrical connection and performance of said device connected to said lead lines in advance of the coupling step.
Claim 7
Dependent Claim
27 words
The method of claim 1 wherein said electric device is connected to each set of lead lines in advance of the coating step of the insulating film.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein said electric device is connected to each set of lead lines after the coating step of the insulating film.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |