Lens driving device, camera module and optical apparatus

A lens driving device, comprising:

• a holder member;
• a bobbin disposed in the holder member;
• a first coil disposed on the bobbin;
• a magnet disposed on the holder member and facing the first coil;
• an elastic member coupled to the bobbin and the holder member;
• a base disposed below the holder member and spaced apart from the holder member;
• a first circuit board disposed on an upper surface of the base, wherein the first circuit board comprises a flexible circuit board;
• a second circuit board disposed on an upper surface of the first circuit board and comprising a second coil facing the magnet, wherein the second circuit board is disposed between the holder member and the base;
• a support member supporting the holder member with respect to the base;
• and
• a guide portion protruding from the upper surface of the base,
• wherein the first circuit board is electrically connected with the second coil,
• wherein the guide portion penetrates the first circuit board and is in contact with a lower surface of the second circuit board,
• wherein the guide portion is integrally formed with the base,
• wherein the base comprises an opening penetrating the base in a vertical direction, and
• wherein the guide portion comprises a first guide portion extending from an inner circumferential surface of the base and a second guide portion extending from an outer circumferential surface of the base,
• wherein a protruded height of the second guide portion corresponds to a protruded height of the first guide portion,
• wherein the first circuit board comprises a first guide groove formed on the inner circumferential surface, the first guide portion penetrates the first guide groove and an upper surface of the first guide portion is in contact with an inner portion of the lower surface of the second circuit board,
• wherein the first circuit board is disposed in the second guide portion and an upper surface of the second guide portion is in contact with an outer portion of the lower surface of the second circuit board,
• wherein the protruded height of the first guide portion corresponds to a thickness of the first circuit board in the vertical direction,
• wherein at least a portion of the upper surface of the first circuit board is in contact with the lower surface of the second circuit board,
• wherein the second coil is overlapped with the magnet in the vertical direction and disposed between the magnet and the base,
• wherein the second guide portion comprises a plurality of second guide portions protruding from the outer circumferential surface of the base so as to be disposed around an outer circumference of the first circuit board,
• wherein the first circuit board comprises a first connecting portion,
• wherein the second circuit board comprises a second connecting portion disposed at a position corresponding to that of the first connecting portion and conductively connected with the first connecting portion,
• wherein the first connecting portion and the second connecting portion are connected to each other by a solder ball,
• wherein the base comprises a grooved portion formed on the upper surface of the base and accommodating the solder ball, and
• wherein the grooved portion is formed by being recessed from the outer circumferential surface of the base.