Method for forming an anti-reflection film of a cathode-ray tube, an apparatus used for carrying out the method and a cathode-ray tube having the anti-reflection film

摘要

An anti-reflection film is produced on the panel surface of a cathode- ray tube by:PP(A) preparing a solution for forming an anti-reflection film, which contains water and a metal alkoxide having the formula,PPM(OR).sub.nP Pwherein M is a metal selected from the group consisting of Si, Ti, Al, Zr, Sn, In, Sb and Zn; R is an alkyl group having 1-10 carbon atoms; n is an integer of from 1 to 8; and when n is not 1, the alkyl groups represented by R may be the same or different,PP(B) coating the solution for forming an anti-reflection film on the outermost surface of the panel of a cathode-ray tube, andPP(C) applying an ultraviolet light to the solution for forming an anti- reflection film coated on said surface to cure the solution to form a transparent film with fine roughness.PPThis production method is carried out using an apparatus having:PP(a) a coating means for coating the above solution for forming an anti- reflection film on the outermost surface of the panel of a cathode-ray tube,PP(b) a transferring means for transferring the solution-coated cathode-ray tube, andPP(c) an ultraviolet light-applying means for photocuring the solution coated on the cathode- ray tube during the transfer of the solution-coated cathode-ray tube. PPIn the above method, when a silicon alkoxide is used as the metal alkoxide, there can be obtained a cathode-ray tube having an anti- reflection film made of alkali-free silica on the outermost surface of the panel, said anti-reflection film giving a ratio of Si-O-Si peak intensity to Si-OH peak intensity of 4 or more when measured for infrared spectrum.