| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wiring substrate with a built-in function element in which local concentration of stress is relaxed and generation of stress can be reduced when a function element is built in an opening provided in a reinforcement layer. <P>SOLUTION: The wiring substrate with a built-in function element comprises a function element having an electrode terminal; a reinforcement layer in which a function element is arranged and having an opening where a part facing a corner of the function element is curved; a filling resin arranged between the function element arranged in the opening and the reinforcement layer; a stress relax via formed in the filling resin; and a first wiring layer electrically connected with the electrode terminal on the surface side of the function element where the electrode terminal is arranged. <P>COPYRIGHT: (C)2012,JPO&INPIT |
