Patent ID: 6158647
Filing Date: 2000-12-12
Classification: B23K,H01L,Y10S

Abstract:
A wire bonding capillary comprising:a wire bonding capillary tool including:a capillary tip having an elongated hole therethrough, the elongated hole terminating at one end of the capillary tip anda face on the one end of the capillary tip, the face including a first frusto-conical surface extending from a portion of the elongated hole of the capillary tip, a second frusto-conical surface having a portion thereof connected to the first frusto-conical surface, a substantially horizontal annular surface having a portion connected to the second frusto-conical surface, wherein said substantially horizontal annular surface is defined by the radius of curvature of the capillary tip and a concave surface with a degree of curvature said concave surface extending from a portion of the substantially horizontal annular surface, wherein the degree of curvature of the concave surface is defined by a radius of curvature and wherein the degree of curvature of the concave surface provides for relative clearance of the capillary tip from adjacent components.