| 摘要 |
PURPOSE:To check a pressure rise in a refrigerant following a temperature rise, by making the thickness of a refrigerant sealed layer at the unavailable part of a phosphor screen thicker than that at the available part of the phosphor screen. CONSTITUTION:Narrowing an interval between a phosphor screen panel 2 and a transparent panel 3a, the quantity of a sealed refrigerant is reduced, then the volume of the refrigerant to be increased by thermal expansion is made smaller whereby the spreading rate of adhesives 4 is also made smaller. Since a metal structure 1a comes into contact with a sufficient area of the refrigerant 5, radiating effects are equal as in the past. A pressure rise in the refrigerant following a temperature rise is very small so that a crack in the panel and a loss of transparentness from the sticking interface of the refrigerant to the outside is thus prevented. |
