Patent ID: 7144257

Claim:
An electro-optical device comprising: an electro-optical device substrate retaining an electro-optical material; a flexible printed circuit board having a plurality of wires and a first terminal, the wires extending continuously from one edge of the flexible printed circuit board to the other, the flexible printed circuit board having an outer peripheral edge extending around the flexible printed circuit board; and a circuit board having an electronic component and a second terminal connected to the first terminal; wherein the circuit board is disposed at a side of the flexible printed circuit board on which the plurality of wires are arranged and is positioned completely within the outer periphery of the flexible printed circuit board in plan view and intersects at least a part of the plurality of wires, the flexible printed circuit board having a protrusion portion inside a window, the printed circuit board being sandwiched between the bottom of the protrusion portion and the top of the flexible printed circuit board.