Patent ID: 8300200

Claim:
A fan-out circuit, comprising: a plurality of fan-out wirings, the plurality of fan-out wirings being arranged on respective sides of a virtual center line, wherein each of the plurality of fan-out wirings comprises: a first detouring portion having a chip bonding terminal and a first connecting terminal, wherein a pitch of any two adjacent chip bonding terminals is P 1 ; and an extending portion having a first terminal and a second terminal, wherein the first terminal is connected to the first connecting terminal, and a pitch of any two adjacent second terminals is P 1 ′ and P 1 ′>P 1 , wherein the first detouring portions of a portion of the plurality of fan-out wirings respectively have a ladder shaped pattern, and the lengths of the ladder shaped patterns are gradually lengthened and then gradually shortened from the virtual center line in an outwardly fashion.