Method of producing electric circuit patterns

Claim 1

A method of producing electric circiut 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 by wet etching, 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 by screen printing.

Claim 2

A method of producing electric circiut 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 by wet etching, 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 by screen printing.

Claim 5

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 by wet etching, 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 by screen printing; and connecting an electric device to each set of lead lines in advance of the electrical coupling step of said fragmented buslines.

Claim 6

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 by wet etching, 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 by screen printing; and connecting an electric device to each set of lead lines in advance of the electrical coupling step of said fragmented buslines.