Samsung Sdi Co., Inc.

Samsung Display Devices Co., Ltd.

Other

Do-Nyun Kim

Bong-Woo Lee

Sang-hoon Lee

Hoo-Deuk Kim

Chang-Ryon Byon

Jun-kyo In

Won-sueg Park

Ran-Ji Lee

Jung-Mook Kim

Je-Wook Nam

Moon-Jin Kim

A deflection yoke for a cathode ray tube improves assembly and productivity and enables effective control of magnetic field corrections during device processing. The deflection yoke includes a horizontal deflection coil located next to the outer circumference of a funnel to generate a horizontal magnetic field, and a vertical deflection coil installed at the outer circumference of the funnel to generate a vertical deflection magnetic field. The vertical deflection coil is insulated from the horizontal deflection coil. A ferrite core is located close to the vertical deflection coil to reduce the loss in the magnetic force generated from the horizontal and vertical deflection coils, and to enhance their magnetic efficiency. A correction unit is spaced apart from the horizontal deflection coil by a predetermined distance to correct a geometric distortion of the vertical and the horizontal deflection magnetic fields that is generated due to the vertical and horizontal deflection coils.

Deflection yoke for cathode ray tube

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.

Funnel for cathode ray tube

A cathode ray tube for reducing a deflection power without any BSN problem is disclosed. The cathode ray tube has a panel, a funnel having a deflection yoke on an outer periphery thereof, and a neck connected to the cone of the funnel. A phosphor screen is arranged on an inner surface of the panel. The funnel includes a body connected to the panel, and a cone connected to the body. The cone has a deflection power reducing shape which is formed to have a range of length 0.25&times;L from an end of the cone at the neck where L is an entire length of the cone measured along an axis of symmetry of the cathode ray tube.

Cathode ray tube having deflection power reducing shape

Cathode ray tube having particular funnel structure

Cathode ray tube having reduction in deflection power consumption relative to funnel condition

Disclosed is a cathode ray tube comprised of a funnel with flute sections wherein the Beam Shadow Neck phenomenon can be prevented while at the same time ensuring adequate structural strength to prevent collapse due to an internal vacuum. These optimum flute sections are accomplished with the help of a computer simulation performance wherethrough electron beam orbits and funnel stress are interpreted.

Cathode ray tube having funnel with flute sections

A cathode ray tube includes a rectangular panel having a phosphor screen formed thereon, a neck having an electron gun assembly disposed therein for emitting three electron beams and a funnel. The funnel has a body portion and a cone portion wherein a contour of the cross-section of the cone portion is a non-circular shape and the perpendicular distance from the tube axis to the contour occurs in the substantially diagonal direction with an angle &thgr;&prime; with respect to the horizontal axis according to the following inequality &thgr;&minus;(4.3&plus;(S/3.8))<&thgr;&prime;<&thgr;&plus;(4.3&plus;(S/3.8)), where &thgr; is the angle in degrees between the diagonal of the face panel and the horizontal axis; S is the distance in mm between the centers of the electron passing holes of the electron gun assembly.

Cathode ray tube

Cathode ray tube with convex interior walls for added stability

Growing community of inventors

Kyungki-do, South Korea

Do-Nyun Kim