Abstract: A color CRT includes a panel having a fluorescent film formed on an inner surface, a tension mask frame assembly installed in the panel and including a frame including a pair of first and second support members separated a predetermined distance from each other, and first and second elastic members installed between the first and second support members to support the first and second support members and having support portions fixed at the first and second support members and a connection portion to connect the support portions, a mask having electron beam passing holes formed therein and installed such that a tension is applied to the first and second support members, and a correction unit installed at the first and second support members or support portions between the connection portion and the mask, to correct a mis-landing of an electron beam due to thermal expansion of the mask and the frame.

Abstract: A funnel for a cathode ray tube includes a body portion having an opened end connected to a panel and an alignment mark formed on an outer surface of the body portion in the vicinity of the opened end, a neck portion for housing an electron gun, a yoke portion around which a deflection yoke is mounted, the yoke portion having a first end connected to the body portion at a top-of-round (TOR) and a second end connected to the neck portion. A convex portion having a thickness greater than 1 mm is provided on an outer portion of the body portion and/or yoke portion from the vicinity of the end of the alignment mark to the vicinity of the TOR in a direction of a tube axis.

Abstract: A cathode ray tube includes a panel with a substantially flat outer surface and an inner curved surface. The inner curved surface of the panel has a phosphor screen. A funnel is connected to the panel while externally mounting a deflection unit for deflecting electron beams. A neck is connected to the funnel while internally mounting an electron gun for emitting the electron beams. A color selection apparatus is internally fitted to the panel such that the electron beams land on correct phosphors of the phosphor screen. The panel has an effective screen with short and long axis. The panel bears a first thickness Th at the ends of the effective screen in the long axis direction, and a second thickness Tv at the ends of the effective screen in the short axis direction. The second thickness Tv of the panel is established to be larger than the first thickness Th of the panel.

Abstract: A color selection apparatus for a cathode ray tube, having a panel as a front glass that is formed to be flat, including a pair of supporting members disposed to be separated by a predetermined distance, a pair of elastic members disposed between the supporting members to be coupled with the supporting members, and a mask coupled with the supporting members and formed with a plurality of electron beam passing apertures, the elastic members having a plurality of overlapped plate members, so that it becomes possible to maintain a tension of the mask formed with the plurality of electron beam passing apertures optimally by varying the shapes of the elastic members.

Abstract: A color CRT includes a panel having a fluorescent film formed on an inner surface, a tension mask frame assembly installed in the panel and including a frame including a pair of first and second support members separated a predetermined distance from each other, and first and second elastic members installed between the first and second support members to support the first and second support members and having support portions fixed at the first and second support members and a connection portion to connect the support portions, a mask having electron beam passing holes formed therein and installed such that a tension is applied to the first and second support members, and a correction unit installed at the first and second support members or support portions between the connection portion and the mask, to correct a mis-landing of an electron beam due to thermal expansion of the mask and the frame.

Abstract: A cathode ray tube includes a panel with a substantially flat outer surface and an inner curved surface. The inner curved surface of the panel has a phosphor screen. A funnel is connected to the panel while externally mounting a deflection unit for deflecting electron beams. A neck is connected to the funnel while internally mounting an electron gun for emitting the electron beams. A color selection apparatus is internally fitted to the panel such that the electron beams land on correct phosphors of the phosphor screen. The panel has an effective screen with short and long axis. The panel bears a first thickness Th at the ends of the effective screen in the long axis direction, and a second thickness Tv at the ends of the effective screen in the short axis direction. The second thickness Tv of the panel is established to be larger than the first thickness Th of the panel.

Abstract: A funnel for a cathode ray tube includes a body portion having an opened end connected to a panel and an alignment mark formed on an outer surface of the body portion in the vicinity of the opened end, a neck portion for housing an electron gun, a yoke portion around which a deflection yoke is mounted, the yoke portion having a first end connected to the body portion at a top-of-round (TOR) and a second end connected to the neck portion. A convex portion having a thickness greater than 1 mm is provided on an outer portion of the body portion and/or yoke portion from the vicinity of the end of the alignment mark to the vicinity of the TOR in a direction of a tube axis.

Abstract: A color selection apparatus for a cathode ray tube, having a panel as a front glass that is formed to be flat, including a pair of supporting members disposed to be separated by a predetermined distance, a pair of elastic members disposed between the supporting members to be coupled with the supporting members, and a mask coupled with the supporting members and formed with a plurality of electron beam passing apertures, the elastic members having a plurality of overlapped plate members, so that it becomes possible to maintain a tension of the mask formed with the plurality of electron beam passing apertures optimally by varying the shapes of the elastic members.

Abstract: A shadow mask assembly for a cathode ray tube (CRT) includes a color selection electrode provided with a large number of beam-passing apertures, a mask frame having a pair of supporting members and a pair of elastic members disposed so as to maintain a predetermined distance between the supporting members, a plurality of spring holders mounted on the supporting and elastic members, each of the spring holders comprising a spring fixing portion and a frame fixing portion that are arranged in a longitudinal direction of the spring holder, one of the spring and frame fixing portions being formed of a bimetal and the other being formed of a uni-metal, and a spring for supporting the mask frame on an inner surface of a cathode ray tube panel, the spring having a first end fixed on the spring fixing portion of the spring holder and a second end fixed on a stud pin embedded in an inner surface of the cathode ray tube panel.