Camera module and mobile phone using the same

摘要

Disclosed herein is a camera module comprising: a circuit board; a frame coupled to the circuit board; an image sensor on the circuit board; a bobbin on the frame, a plurality of lenses being inside the bobbin; a coil wound on the bobbin, the bobbin moving to two directions based on a current applied to the coil; a magnet configured to interact the coil; and a yoke on the frame, the magnet being at an inner side of the yoke, wherein the bobbin moves to a first direction when a forward current is applied to the coil and to a second direction when a reverse current is applied to the coil.

主权项

1. A camera module comprising:
a frame; a printed circuit board disposed below the frame; an image sensor disposed on the printed circuit board; an actuator including a bobbin disposed over the frame; a lens barrel coupled to an inner side of the bobbin; at least one lens fixed in the lens barrel; and an elastic member supporting the bobbin and positioning the bobbin at an initial position; wherein the bobbin travels in a first direction from the initial position when a first current is applied to the actuator, and the bobbin travels in a second direction from the initial position when a second current is applied to the actuator; wherein a first screw thread is formed on an inner lateral surface of the bobbin, and a second screw thread is formed on an outer lateral surface of the lens barrel and coupled with the first screw thread; wherein an inner diameter of the second screw thread is longer than a diameter of the outer lateral surface of the lens barrel; and wherein an outer lateral surface of the lens barrel is recessed inwardly forming a stepped part thereon between an upper side of the second screw thread and an upper end of the lens barrel.