FOCUSING ELECTRODE IN ELECTRON GUN FOR COLOR CATHODE RAY TUBE

• Main Authors: HI WON YOON, WON HYUN KIM, SUNG HO CHO, HYUN CHEOL KIM, SUNG GI AN
• Format: Patent
• Language: English
• Published: 28.11.2003
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

A FOCUSING ELECTRODE IN AN ELECTRON GUN FOR A COLOR CATHODE RAY TUBE WHICH PROVIDES A HIGHER DEGREE OF FREEDOM IN ELECTRON GUN DESIGN AND REDUCES ERRORS DURING ASSEMBLY OF THE ELECTRON GUN. THE FOCUSING ELECTRODE INCLUDES A FIRST FOCUSING ELECTRODE (FIG 5A: 1) THAT RECEIVES A CONSTANT VOLTAGE AND HAS VERTICALLY ELONGATED ELECTRON BEAM PASS-THROUGH HOLES (FIG 5A: 3C AND 3S) FORMED THEREIN. A SECOND FOCUSING ELECTRODE (FIG 5A: 2) THAT RECEIVES A DYNAMIC VOLTAGE HAS ELECTRON BEAM PASS-THROUGH HOLES (FIG 5A: 4C AND 4S) HAS A PAIR OF BURRING PARTS FORMED ON THE UPPER AND LOWER EDGES THEREOF (FIG 5A: 7C AND 7S). THE BURRING PARTS (FIG 5A: 7C AND 7S) ARE DISPOSED IN EACH OF THE VERTICALLY ELONGATED ELECTRON BEAM PASS-THROUGH HOLES IN THE FIRST FOCUSING ELECTRODE (FIG 5A: 3C AND 3S). THE BURRING PARTS (FIG 5A: 7C AND 7S) CAN BE DISPOSED IN EACH OF THE VERTICALLY ELONGATED ELECTRON BEAM PASS-THROUGH HOLES IN THE FIRST FOCUSING ELECTRODE (FIG 5A: 3C AND 3S) WITHOUT CHANGING A HORIZONTAL DIAMETER OF THE ELECTRON BEAM PASS-THROUGH HOLES IN THE FIRST FOCUSING ELECTRODE (FIG 5A: 3C AND 3S). (FIG.5A)