Color filter substrate with color filter pattern and protective

Details Color filter substrate with color filter pattern and protective Color filter substrate with color filter pattern and protective

1994-05-03

1995-02-21

Powell, William

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

1566591, 156667, 359 67, 428 1, 428207, G02F 113, C09K 1900, B44C 122

Patent

active

053921445

ABSTRACT:
An electrode plate structure for a liquid crystal color display is produced by forming a color filter layer of a photosensitive polyamide resin containing a colorant dispersed therein; disposing a protective layer of a photosensitive polyamide resin on the color filter layer; forming an ITO (indium-tin-oxide) film on the protective layer, preferably at an elevated temperature of at most 270.degree. C.; post-annealing the ITO film at a temperature of 200.degree.-300.degree. C. for improving the crystallinity of the ITO film suitable for etching; and selectively etching the ITO film patternwise with an etchant of hydroiodic acid or a hydroiodic acid-ferric chloride aqueous solution mixture to leave an ITO electrode pattern.

REFERENCES:
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patent: 5150239 (1992-09-01), Watanabe et al.
patent: 5185059 (1993-02-01), Nishida et al.
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Patent Abstracts of Japan, vol. 9, No. 217 (1985) 078401.
Patent Abstracts of Japan, vol. 10, No. 364 (1986) 160701.
Patent Abstracts of Japan, vol. 12, No. 317 (1988) 082405.

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