Samsung Sdi Co., Inc.

Sung-Hun Ji

Joon-Soo Bae

Do-Hun Pyun

Soon-Dong Jeong

Yeun-Gil Choi

A cathode ray tube includes a panel with inner and outer surfaces, a funnel connected to the panel, a neck connected to the rear of the funnel, and a shadow mask mounted within the panel. The inner surface of the panel satisfies the following condition:0.2&#x2266;Px&#x2266;0.4, 0.3&#x2266;Py&#x2266;0.6where when the inner surface of the panel is expressed by the following biquadratic: based on the central point of the inner surface of the panel with the three-dimensional orthogonal coordinates system defined by the x, y and z axes, Px and Py are defined by the following formula: 

Cathode ray tube

A color cathode-ray tube is provided for easily detaching a mask assembly when manufacturing a phosphor screen by expanding the gap (Q-value) between the shadow mask and a phosphor screen by a number times while maintaing the resolution degree. The cathode-ray tube includes a phosphor screen formed on the inner surface of a panel and repeatedly forms a plurality of red, green and blue phosphor stripes, an electron gun emitting three electron beams toward the phosphor screen, and a shadow mask arranged in front of the phosphor screen facing the electron gun and forming a plurality of beam passage apertures for separating the electron beams.

Growing community of inventors

Suwon-si, South Korea

Sung-Hun Ji