Patent ID: 6768601
Filing Date: 2004-07-27
Classification: G11B

Abstract:
A lens position control unit comprising:a lens holder, on which a lens is fixed, disposed on an upper part of a suspended yoke plate; suspension wires for supporting the suspension of the lens holder and applying electric power; coil PCBs, on which coils for focusing, tracking, and radial tilt driving of the lens holder are patterned, attached on front and rear parts of the lens holder; and magnets positioned at predetermined intervals from the coil PCBs to drive the lens by interaction with the coil PCBs; wherein the coil PCBs comprise a focusing pattern for focusing/driving the lens holder, a tracking pattern for tracking/driving the lens holder and a tilt pattern for tilt/driving the lens holder in a radial direction; and wherein the tracking pattern and the tilt pattern are formed to be overlapped with each other at right angles, the tracking pattern is protruded toward the center part of the coil PCBs, and the tilt pattern is formed to be protruded in an up-and-down direction of the coil PCBs centering around the overlapped portion of both the tracking pattern and the tilt pattern.