Browse Prior Art Database

Nonionic Cleaning Agent for Color Filter

IP.com Disclosure Number: IPCOM000119145D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Tsuboi, K: AUTHOR [+2]

Abstract

Disclosed is a method of providing a nonionic cleaning agent having high penetrability and high dispersibility. This makes it possible to remove stains easily from products with no residue and no damage. It also prevents stains from re-adsorbing into products. This cleaning agent is especially effective for glass substrate cleaning of the color filter manufacturing process for Liquid Crystal Displays (LCDs).

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Nonionic Cleaning Agent for Color Filter

      Disclosed is a method of providing a nonionic cleaning agent
having high penetrability and high dispersibility.  This makes it
possible to remove stains easily from products with no residue and no
damage.  It also prevents stains from re-adsorbing into products.
This cleaning agent is especially effective for glass substrate
cleaning of the color filter manufacturing process for Liquid Crystal
Displays (LCDs).

      This cleaning agent consists of three kinds of materials:
polyoxyethylene alkyl phenyl ether as a surfactant; polyoxyethylene
alkyl/phenyl ether as a dispersant; polyhydric alcohol as a
penetrant.  Outstanding performance as a cleaner depends not only on
the combination of three materials but also on the composition ratio
of these materials.
  Polyoxyethylene alkyl phenyl ether is shown as follows:
    R-C6H4-O-(CH2CH2O)nH
  Polyoxyethylene alkyl/phenyl ether is shown as follows:
    R-O(CH2CH2O)nH
  Polyhydric alcohol is shown as follows:
    C4H9-O-C2H4-O-C2H4OH

      The optimum combination of three kinds of materials show great
improvement on quality performance at glass cleaning process prior to
resist application for Red/Green/Blue each photolithography and
pre-cleaning for Indium Tin Oxide (ITO) sputtering in comparison with
a conventional nonionic cleaner.