Samsung Sdi Co., Inc.

Kyou-Bong Lee

Sang-Ho Jeon

Jong-Han Rhee

Hoo-Deuk Kim

Joon-Soo Bae

Do-Hun Pyun

Young-Gon Hong

Jun-Jong Lee

Chang-Ryon Byon

Mun-Seong Kim

Seok-Nam Lee

Yeoung-Uk Nam

Yun-Ho Chang

A Cathode Ray Tube (CRT) includes a panel having an inner phosphor screen, a funnel connected to the panel and adapted to have a deflection unit arranged thereon and a neck connected to the funnel and having an electron gun arranged therein. A shatter-proof member is installed on the funnel to prevent the tube from shattering.

CRT for display device with shatter proof member attached to funnel using adhesive

An electron gun includes a cathode adapted to emit thermal electrons, a first electrode and a second electrode adapted to form a triode portion together with the cathode, a plurality of focusing electrodes, each of said plurality of focusing electrodes being perforated by a plurality of beam passage apertures and an anode electrode, wherein a pitch between ones of said plurality of beam passage apertures of a one of said plurality of focusing electrodes arranged closest to the second electrode is smaller than a pitch between ones of said plurality of the beam passage apertures of a remaining of said plurality of focusing electrodes.

Electron gun for cathode ray tube

A cathode ray tube includes a panel with an inner phosphor screen, and a funnel sealed to the panel while facing the phosphor screen. The funnel is externally mounted with a deflection yoke. A neck is sealed to the rear of the funnel while mounting an electron gun to emit electron beams therein. A shadow mask is placed within the panel. The shadow mask has a hole-formation portion with a plurality of beam-guide holes, a non-holed portion externally surrounding the hole-formation portion while being shaped with a rectangular frame, and a skirt bent from the outer periphery of the non-holed portion to the rear of the panel. The skirt has a basic etching portion half-etched at a predetermined roughness. The components of the shadow mask are integrated into one body. A welding portion is formed at the bottom of the skirt with a plurality of welding points. A mask frame is internally suspension-fitted to the panel while being welded to the skirt to support the shadow mask. The skirt of the shadow mask has a subsidiary etching portion placed between the welding portion and the basic etching portion while being half-etched at a roughness greater than the roughness of the basic etching portion.

Cathode ray tube having shadow mask with improved shock absorption effect

Growing community of inventors

Suwon-si, South Korea

Kyou-Bong Lee