Browse Prior Art Database

Glass Substrate Servo Patterning by Pop Surface Modulation

IP.com Disclosure Number: IPCOM000107494D
Original Publication Date: 1992-Feb-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 1 page(s) / 38K

Publishing Venue

IBM

Related People

Falcone, S: AUTHOR [+3]

Abstract

A method of making surface relief pattern on glass substrate is described.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Glass Substrate Servo Patterning by Pop Surface Modulation

      A method of making surface relief pattern on glass substrate is
described.

      A glass substrate is first deposited with a layer of conductive
film, followed by spin coating or deposit a photoconducting material,
be it photopolymer or hydrogenated silicon, and finally, a layer of
thermoplastic polymer is coated over the photoconductor.  To create
the surface relief pattern on the substrate, the metallic layer is
first electrically grounded.  The image from a mask is transferred to
the coated glass substrate by charging the surface electrostatically
using Corona discharge (Step 1).  The surface is then exposed to the
mask which modulates light using either contact printing or
projection printing technique (Step 2).  Charges are neutralized by
the light due to the photoconducting nature of the photoconductor
layer.  The remaining charges form an electrostatic latent image on
the substrate.  This image may be developed chemically, optically
(UV) or thermally due to localized electrostatic force (Step 3).
Once the image is fixed, residual electrical charges are neutralized
by blanket exposing the entire substrate surface (Step 4) with light.

      Disclosed anonymously.