Patent ID: 7369415

Claim:
An electronic control device comprising: a casing; a multilayered flexible substrate accommodated in the casing, wherein the multilayered flexible substrate includes i) a plurality of rigid substrate portions mounting electronic components thereon and ii) a flexible portion being flexible and bendable and connected to a first end of each of the rigid substrate portions to provide an electrical connection between or among said rigid substrate portions; and a plurality of card edge connectors, wherein one of the edge connectors is integrally formed with a second end of each of said rigid substrate portions, and wherein said multilayered flexible substrate is folded at said flexible portions so that said rigid substrate portions are disposed in a multilayer arrangement in a thickness direction of each of the rigid substrate portions, the multilayer arrangement allows i) the flexible portion to be positioned and bent outside the plurality of rigid substrate portions arranged in the multilayer arrangement and ii) the card edge connectors to be positioned to protrude outward from each of the second ends of the rigid substrate portions arranged in the multilayer arrangement, and the folded flexible portion has a length in a planar direction perpendicular to the thickness direction that is less than a protruded length of the card edge connectors.