| 摘要 |
A FACE PANEL FOR A CATHODE-RAY TUBE IS COATED WITH AN ANTIREFLECTION FILM BY FORMING, ON THE OUTER SURFACE THEREOF IN THIS ORDER, A 44.9 NM-THICK PRASEODYMIUM TITANATE FILM AS A FIRST LAYER, A 4 .9 NM-THICK FILM OF A NICKEL-IRON ALLOY AS A SECOND LAYER, A 53.4 NM-THICK PRASEODYMIUM TITANATE FILM AS A THIRD LAYER, A 3.9 NM-THICK FILM OF A NICKEL-IRON ALLOY AS A FOURTH LAYER, A20.6 NM-THICK PRASEODYMIUM TITANATE FILM AS A FIFTH LAYER, AND AN 84.7 NM-THICK MAGNESIUM FLUORIDE FILM AS A SIXTH LAYER. THIS COATED FACE PANEL IS FREE FROM THE PROBLEM THAT CONVENTIONAL CATHODE-RAY TUBE FACE PANELS COATED ON THE OUTER SURFACE WITH AN ANTIREFLECTION FILM COMPRISING SUPERPOSED METAL FILMS AND TRANSPARENT DIELECTRIC FILMS MAKE THE CATHODE-RAY TUBES EXHIBIT DOUBLE IMAGES ALTHOUGH EFFECTIVE IN DIMINISHING THE REFLECTION OF EXTERNAL LIGHT ON THE SURFACE OF THE CATHODE-RAY TUBES AND IN ENHANCING DISPLAY CONTRAST. THE CATHODE-RAY TUBE USING THE FACE PANEL COATED WITH THE SPECIFIC ANTIREFLECTION FILM DOES NOT EXHIBIT DOUBLE IMAGES, IS PREVENTED FROM SUFFERING STATIC BUILDUP ON ITS SURFACE OR FROM REFLECTING EXTERNAL LIGHT THEREON, AND CAN ATTAIN HIGHER IMAGE CONTRAST.
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