Coating solution for forming transparent conductive coating and

Details Coating solution for forming transparent conductive coating and Coating solution for forming transparent conductive coating and

1992-07-20

1994-12-27

Yoon, Tae H.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252500, 252512, 524401, 524409, 524430, 524506, H01B 102, H01B 106, C08K 320

Patent

active

053763084

DESCRIPTION:

BRIEF SUMMARY
FIELD OF INDUSTRIAL APPLICATION

This invention relates to coating solution for forming transparent conductive coatings, process for preparing the same, conductive substrates, processes for preparing the same, and display devices provided with transparent conductive substrates. More particularly, the invention relates to a coating solution capable of forming transparent conductive coatings excellent in adhesion and surface smoothness as well as in durability such as water resistance and alkali resistance, a process for preparing said coating solution, conductive substrates on the surface of which a transparent conductive coating having such excellent properties as mentioned above has been formed, processes for preparing said conductive substrates, and display devices provided with transparent conductive substrates.


TECHNOLOGICAL BACKGROUND

Though glass or plastics are being used as transparent substrates, they are liable to generate static electricity on the surface thereof, because such substrates are insulators. When these susbtrates such as glass or plastics are used for a display panel such as Braun tube (CRT), fluorescent indication pipe (FIP), plasma display (PDP), or liquid crystal display (LCD), static electricity is generated on the face-plate of the display panel and dust or the like is attracted thereto, whereby the displayed images on the panel becomes difficult to be visible. Particularly, in the case of LCD, there is sometimes observed destruction of IC or miss-operation of the display device caused by such static electricity as generated above.
In an electrophotographic duplicator for ordinary paper (PPC) equipped with an automatic draft feeder (ADF), when a copy is taken successively from a plurality of drafts through ADF, a contact glass plate on which the draft is placed and the draft in the sheet form fed through ADF are rubbed with each other, whereby static electricity is generated on the contact glass plate, and by virtue of the static electricity thus generated, the draft attaches to the contact glass plate and stays thereon, plugging sometimes the ADF with the drafts.
In order to inhibit the generation of static electricity on the above-mentioned substrates used for a display panel of the display device or contact glass plate of PPC, there has heretofore been used to apply a transparent substrate having thereon a transparent conductive film to the surface of said display panel or said contact glass plate.
Known hitherto as a technique of obtaining such transparent conductive substrates as mentioned above is, for example, a method wherein a transparent conductive film consisting of a metal or inorganic oxide is formed on the surface of a transparent conductive substrate by means of a dry process such as CVD, PVD, vacuum evaporation or sputtering, or a method wherein a conductive coating is formed on the surface of a substrate by means of a wet process which comprises applying a coating solution containing a conductive material such as tin oxide and a transparent matrix-forming component on the surface of a substrate followed by drying and curing.
In the dry process such as CVD referred to above, however, there are involved such problems that the film must be formed by a batchwise method using a vacuum evaporator, and that the surface area or shape of the substrate on which the film is formed is limited to depending upon the size of the vacuum evaporator used.
In the wet process mentioned above, on the one hand, there are involved such problems that the transparent conductive coating formed by using, as a transparent matrix-forming component, a binder resin such as acrylic resin, butyral resin, melamine resin or vinyl chloride/vinyl acetate copolymer resin is poor in transparency, scratch resistance, adhesion to the substrate or durability such as alkali resistance, acid resistance, water resistance or solvent resistance.
Recently, with the view of solving such problems as mentioned above, there have been proposed various coating solutions for forming conductive coatings and transp

REFERENCES:
patent: 4937148 (1990-06-01), Sato et al.
patent: 5229037 (1993-07-01), Nakano et al.
Chemical Abstracts, vol. 113, No. 14, 1 Oct. 1990, Abstract No. 117205p, Shioda et al.
Database WPIL, Week 9017, 20 Jun. 1990, Derwent Publications Ltd., London, GB; AN 90-128533.

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