| 摘要 |
PURPOSE: A circuit board using conductive ink is provided to prevent an error in treating a printed circuit board and to eliminate damage to an electrical connection inside a package, by making conductive ink have strong resistibility regarding stress even if the printed circuit board is warped or twisted by external force. CONSTITUTION: A plurality of conductive ink layers(12,13) are installed on a resin substrate(11), and have a bond finger part in an inside end portion of the substrate as a circuit pattern. A plurality of solder ball lands(15) are electrically connected to the respective conductive ink layers, and are installed on a lower surface of the resin substrate. The substrate is either one of a printed circuit board or film.
|
