Glass bulb for color picture tube and the same tube

Details Glass bulb for color picture tube and the same tube Glass bulb for color picture tube and the same tube

2007-07-24

2007-07-24

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

C313S407000, C313S408000, C313S461000, C313S47700R, C313S479000, C220S00210A

Reissue Patent

active

10050537

ABSTRACT:
A color picture tube is provided with a glass bulb in which the external surface of the effective display area of the face plate is formed substantially flat and a color selection mask, having the curvature projected toward the face plate, provided opposed to the internal surface of the face plate within the glass bulb. Therefore, the external surface is flat, the mechanical shock resistance characteristic is high, a tension can surely be applied to the color selection mask and moreover vibration of the color selection mask can be prevented even if external vibration is applied thereto.

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EPO Official Action dated Nov. 4, 2002.

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