Patent ID: 6797531
Filing Date: 2004-09-28
Classification: G02B,H01L

Abstract:
A process for producing a microlens array comprising the steps of:arranging a master substrate having an insulating substrate, an electroconductive thin film and a photosemiconductor thin film in this order; preparing an aqueous electrolytic solution containing a film forming material having a solubility or dispersibility in an aqueous liquid decreasing upon changing pH; forming a microlens array master by contacting the photosemiconductor thin film with the aqueous electrolytic solution and irradiating the photosemiconductor thin film with a light so as to induce the pH change of the electrolytic solution enough to selectively deposit the film forming material on the master substrate; forming a layer of a template resin material on a surface of the master and releasing the layer therefrom to produce a template; and forming a layer of a microlens array resin material having a controlled refractive index on the template; and releasing the template therefrom to produce a microlens array.