Patent ID: 7259034

Claim:
A self-alignment manufacturing method of a microlens and an aperture using in an optical device, comprising steps of: forming an opaque film on a transparent substrate, and forming at least one aperture and at least one circular opening outside the aperture on the opaque film; wherein the aperture and the circular opening are formed with lift-off technology or dry-etching; forming a macromolecule material covering the transparent substrate and the opaque film; performing a backside exposure on the transparent substrate using the opaque film as mask to expose the macromolecule material exposed from the circular opening; forming an exposed area on the opaque film outside the circular opening with a lithography process to define a macromolecule material structure with specific shape; and heating the macromolecule material structure to a glass transition temperature to form the microlens, and the microlens self-aligns the aperture.