| 摘要 |
<p>PROBLEM TO BE SOLVED: To cope with the increase of density while maintaining high connection reliability in relation to a connection structure of a plug, connector and printed circuit board suitably used for electrical connection of an apparatus highly increased in density. SOLUTION: A printed circuit board 10 having a plug part 23 functioning as a plug is formed into a structure wherein plural board layered products 11A-13A are laminated, and terminal parts 17A-20A (18A and 20A are not shown in the figure) are formed at end parts of the plural board layered products 11A-13A. A stair-like step part 14A is formed at the end parts by projecting the plural board layered products 11A-13A in their surface direction by varying their projecting amounts, and the terminal parts 17A-20A of the respective board layered products 11A-13A are so formed as to be exposed to the step part 14A. A connector for inserting the plug part 23 is formed into a structure having contact parts 47A-50A protrusively formed by varying their projecting amounts in the surface direction and their heights in the height direction corresponding to the terminal parts 17A-20A formed in the step part 14A.</p> |
