Method of fabricating a stamper by half-tone technology

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making named article

Reexamination Certificate

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C430S321000, C430S330000

Reexamination Certificate

active

06994951

ABSTRACT:
First, a substrate is provided, and a half-tone mask is employed to perform an exposing and developing process for forming a plurality of photoresist patterns having different thickness. Then, a flow process is performed to heat the photoresist patterns so that each photoresist pattern has a microlens surface. Following that, a metal plate is formed on the substrate for obtaining a plurality of patterns, which are opposite to the plurality of photoresist patterns, on the bottom surface. Finally, the metal plate is removed from the substrate, and combined with an insert mold.

REFERENCES:
patent: 6071652 (2000-06-01), Feldman et al.
patent: 2003/0209819 (2003-11-01), Brown et al.
patent: 0 475 741 (1992-03-01), None
patent: 7-323428 (1995-12-01), None

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