Patent ID: 7067796
Filing Date: 2006-06-27
Classification: G01D

Abstract:
1. An integrated circuit for an optical encoder, comprising: a signal processing section for generating a position detection signal from a detection signal of a light receiving element; a belt-like power source potential layer formed at least between the signal processing section and the light receiving element, electrical potential of the power source potential layer being set to power source potential level; and a plurality of conductive layers formed at different heights at locations above the power source potential layer, wherein, in a region immediately above the power source potential layer, a connection line for electrically connecting the light receiving element and the signal processing section is formed by one of the plurality of conductive layers other than the lowermost layer; and wherein the width of the power source potential layer in the region where the power source potential layer is overlapped by the connection line is smaller than the width of the power source potential layer in the remaining region.