| 摘要 |
PURPOSE:To enhance the reliability of a wiring part by a method wherein crossing circuit extraction wiring parts are formed in a definite manner, points to be connected in order to constitute a desired circuit structure are selected from said crossing points and an interlayer connection is executed at these points so that circuit blocks are wired. CONSTITUTION:It is supposed that circuit blocks A-F arranged in a row are identical ones and that arbitrary four blocks out of them are selected as objects where the circuit blocks are connected with one another. For example, after the circuit blocks A-F have been tested, the circuit blocks A, B, D, F to be used are selected; if external connection terminals (i) and (j) of the blocks are to be connected in the following manner; (i) of A and (i) of B; (i) of D and (i) of F; (j) of A and (j) of D; (j) of B and (j) of F. These connections are realized if an interlayer connection is executed at points indicated by black round marks out of crossing points between interblock wiring parts 1(2a)-1(6A) and circuit extraction wiring parts 3. By this setup, a process is simplified and the reliability of a wiring part is enhanced as compared with a conventional method where, after formation of a wiring part, the wiring part is made to differ according to a difference of a circuit block to be used.
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