| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of any solder bridging without augmenting a board even when soldering a part with a fine electrode pitch to the board. SOLUTION: A plurality of patterns comprising conductive members disposed lengthways on a board 1, wherein the patterns having in their end part electrode parts 5 for electric connections and provided adjacently to each other at a specific space are so covered excluding the electrode parts 5 with an electrically insulating covering member 6 that the width of the specific space on the boundary side between the covered part and the electrode parts 5 is larger than the one on the end side of the electrode parts 5, and further, in this specific space of the electrode parts 5, a silk 9 for silk printing is provided as an electrically insulating separation member. |
