Patent ID: 7435001

Claim:
A hydrodynamic bearing device, comprising: a fixed portion; a rotating portion which rotates with respect to the fixed portion; a lubricant to be filled in a gap formed between the rotating portion and the fixed portion; a dynamic pressure bearing portion for supporting the rotating portion so as to be rotatable with respect to the fixed portion with the lubricant interposed therebetween; a first gap portion provided in an upper portion of the rotating portion in an axial direction and formed between the rotating portion and the fixed portion; a first surface portion formed on either a part of the rotating portion or a part of the fixed portion which form the first gap portion in a position above the first gap portion in the axial direction; a first lube repellant which is applied on the first surface portion in a circular shape with a space of a predetermined distance in a radial direction from an outer edge of the gap portion; and a second lube repellant which is applied in a circular shape on either the rotation portion or the fixed portion at a position closer to an outer edge of the gap than the first surface portion within the first gap.