Patent ID: 6841860
Filing Date: 2005-01-11
Classification: G02B,H01S

Abstract:
1. A flip-chip bonding structure comprising: a semiconductor substrate; a lower-clad layer formed on the upper surface of the semiconductor substrate having a mounting area for mounting an optical device; at least two vertical alignment structures formed on a part of the upper surface of the mounting area of the lower-clad layer for determining a vertical alignment position of the optical device on the semiconductor substrate; at least two electrodes formed on another part of the upper surface of the mounting area of the lower-clad layer; and, a solder bump formed on the upper surfaces of the electrodes; wherein each one of said at least two vertical alignment structures forms a respective step an the lower-clad layer that is adjacent one of said at least two electrodes, said step limiting vertical displacement of the optical semiconductor device on the semiconductor substrate.