Process for producing electrode plate structure for liquid cryst

Details Process for producing electrode plate structure for liquid cryst Process for producing electrode plate structure for liquid cryst

1991-07-11

1993-02-09

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156656, 156667, 252 72, 359 66, B44C 122, C23F 100

Patent

active

051850591

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:
patent: 4838656 (1989-06-01), Stoddard
Dietrich, Thin Solid Films, vol. 122, No. 1 (1984) 19:29.
Patent Abstracts of Japan, vol. 9, No. 217 (1985) 078401.
Patent Abstracts of Japan, vol. 12, No. 317 (1988) 082405.
Patent Abstracts of Japan, vol. 10, No. 364 (1986) 160701.
Patent Abstracts of Japan, vol. 6, No. 174 (1982) 089479.

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