Etching composition

Etching composition

  • CN 1,670,624 B
  • Filed: 03/17/2005
  • Issued: 11/14/2012
  • Est. Priority Date: 03/18/2004
  • Status: Active Grant
First Claim
Patent Images

1. the etch combination of thin-film transistor LCD device is characterized by,ContainA) hydrochloric acid of 12 weight %~

  • 30 weight %;

    B) acetic acid of 1 weight %~

    15 weight %;

    C) NH of 0.1 weight %~

    5 weight % 4NO 3D) ultrapure water of surplus.

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