| 摘要 |
PURPOSE: A projection type cathode-ray tube is provided to improve the optical properties and durability, and enable efficient manufacturing at low cost. CONSTITUTION: A thickness of a panel(11) of a cathode-ray tube body(10) is uniformly formed excluding a periphery edge part(11d) which is an adhering surface to a coupler (cooling liquid holding body)(21). A cooling effect by a cooling mechanism(20) on the panel(11) is uniform on the entire surface. Therefore, optical properties and durability of the panel(11) are improved. In a manufacturing process of heating the panel(11), a temperature difference is not generated if a cooling temperature of the panel(11) is decreased and cooling time is reduced, thereby uniform cooling can be achieved. Because a part of the panel(11) excluding the periphery edge part(11d) forms a recessed curved surface part(11e), to improve adhesion, only the periphery edge part(11d), which is adhered to the edge of an opening(21a) on the back side of the coupler(21), is to be polished, thereby a polishing time can be made short.
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