Samsung Display Devices Co., Ltd.

Won-sueg Park

In-kyu Park

Do-Nyun Kim

Chul-han Bae

Cathode ray tube with convex interior walls for added stability

A method of manufacturing a cathode ray tube includes the steps of providing a stem with a flange having an outer diameter smaller than an inner diameter of a bottom end of the neck, performing a sealing operation between the stem and the neck in such a state that a bottom side of the flange is in a position, externally distant from the bottom end of the neck less than a thickness (mm) of the flange while internally distant from it less than twice the thickness of the flange, and moving the stem downward during the sealing operation so as to elongate the sealed portion of the neck, thereby preventing it from being deflated.

Cathode ray tube and method of manufacturing same

A color picture tube having an in-line electron gun includes a front panel, a funnel sealed to the rear of the panel, a neck connected to the rear of the funnel and provided with an internal in line electron gun and a plurality of electrodes for focusing and accelerating electron beams emitted from the electron gun, and a deflection yoke mounted around the funnel to scan the electron beams across the screen of the panel. An outer diameter NO of the neck is defined by 22.5 mm&lt;NO.ltoreq.24.0 mm and the relationship between the distance P between centers of neighboring beam-guide holes of the electrodes and the outer diameter NO of the neck is defined by 4.1&lt;NO/P&lt;5.4.

Growing community of inventors

Kyungki-do, South Korea

Won-sueg Park