| 摘要 |
PURPOSE:To decrease the occurrence of poor connection by a method wherein bumps provided with stripe-geometry protrusions and recesses on their upper surfaces are positioned facing each other with the protrusions and recesses intertwined. CONSTITUTION:A bump 3a is approximately 30mum in diameter and approximately 10mum in height. A stripe-geometry protrusion/recess 4 has a rectangular cross section. A protrusion is approximately 5mum in width. A recess is approximately 5mum in width and approximately 4mum in depth. Of the entirety, at least the protrusions/recesses 4 are formed of in. Accordingly, when pressure is applied with a protrusion accommodated in a recess, they collapse to be tightly combined. This ensures easy contact for a bump 3a to come into contact after the collapse, which ensures excellent contact for all the bumps 3a. |
