| 摘要 |
<p>The present invention is a cathode ray tube in which a panel (10), a neck (11), a funnel (12), a stem (13), and an air-evacuating pipe (14) for forming an envelope are made as glass parts. At least one of the glass parts including the neck, the funnel, the stem, and the air-evacuating pipe is made of an infrared absorbing glass with an infrared transmittance of 70% or less for the wavelength of 1050nm in a thickness direction. Another is a method of producing a cathode ray tube in which fusing and sealing are carried out by heating and softening the glass parts including the panel, the funnel, the neck, the stem, and the air-evacuating pipe. Among the funnel, the neck, the stem, and the air-evacuating pipe of the cathode ray tube, at least one of the glass parts which is made of an infrared absorbing glass is heated and softened mainly by the use of infrared rays. Such glass part tends to absorb heat radiation. Therefore, the heating time can be shortened and the heating temperature can be lowered upon fusing and sealing the glass part. Moreover, only a predetermined portion of the glass part can be heated in a spot-like fashion by the use of heating means such as an infrared lamp or a laser. <IMAGE></p> |
