Lens driving unit for optical pickup and optical disc drive including the lens driving unit

An optical disc drive comprising:

• an object lens configured to face an optical recording medium;
• a light source configured to emit light toward the object lens;
• a light-receiving device configured to receive light reflected by the optical recording medium;
• a base for supporting the lens driving unit, the light source, and the light-receiving device;
• and
• a lens driving unit comprising:
• a lens frame comprising four side surfaces and a top surface in which the object lens is disposed;
• a pair of first driving coils wound around a first side surface of the lens frame;
• a pair of second driving coils wound around a third side surface of the lens frame;
• a plurality of suspension wires which are electrically connected to the pair of first driving coils and the pair of second driving coils;
• a yoke comprising a plurality of magnets fixed thereto which correspond to the pairs of first and second driving coils;
• and
• a wire holder to which one side of the yoke and to which the suspension wires are fixed.

An optical lens driving unit for driving an optical lens in an optical disc drive, the optical lens driving unit comprising:

• a lens frame comprising the optical lens on a top surface, a first plurality of winding units on a first outer surface, and a second plurality of windings on a second outer surface;
• first driving coils wound around the first plurality of windings on the first outer surface of the lens frame;
• second driving coils wound around the second plurality of windings on the second outer surface of the lens frame;
• and
• a holder that comprises a plurality of suspension wires fixed thereto which are electrically connected to the first driving coils and the second driving coils.