Fabrication of large area resin microlens arrays using gas-assisted ultraviolet embossing.

Published

Journal Article

Large-area microlens arrays are becoming important components in many applications such as LCD-TV diffusers. This paper reports a uniform pressure, low temperature process for their fabrication. The process integrates gas-assisted embossing and UV-curing embossing. During the process, the 230mm x 203mm PMMA substrate is pressed against the stainless-steel stamper coated with UV-curable resin. Under the gas pressuring and UV irradiating, a large array of microlens can be formed. By using this process, high embossing temperature and high embossing pressure can be avoided. Little residual stress is observed in the embossed PMMA substrate. The uniformity of large-area fabrication and optical properties of fabricated resin microlens array have been verified. This study has successfully shown the potential of this gas-assisted UV embossing process for the replication of large-area microstructures.

Full Text

Cited Authors

  • Huang, P-H; Huang, T-C; Sun, Y-T; Yang, S-Y

Published Date

  • March 2008

Published In

Volume / Issue

  • 16 / 5

Start / End Page

  • 3041 - 3048

PubMed ID

  • 18542390

Pubmed Central ID

  • 18542390

Electronic International Standard Serial Number (EISSN)

  • 1094-4087

International Standard Serial Number (ISSN)

  • 1094-4087

Digital Object Identifier (DOI)

  • 10.1364/oe.16.003041

Language

  • eng