DEFLECTION YOKE FOR CATHODE-RAY TUBE

• Main Author: LEE, SEOK MUN
• Format: Patent
• Language: English; Korean
• Published: 05.03.2001
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

PURPOSE: A deflection yoke for a cathode-ray tube is provided to improve a productivity, an assembling dispersion and a deflection sensitivity by forming the first core made of plastic or rubber ferrite material and the second yoke made of ferrite material having superior electro-magnetic characteristics. CONSTITUTION: A deflection yoke(130) comprises the first core(131) and the second core(139). The first core(131) forms an inner region of the deflection yoke(130) and is made of plastic ferrite forming core or rubber ferrite forming core. The second core(139) forms a region from the outside of the first core(131) to an outer surface(139-1), and is made of ferrite material having superior electro-magnetic characteristics. When a junction surface(135) between the first core(131) and the second core(139) has a substantially circular shape with respect to a tube axis(Z), the region of the first core(131) has a depth of 10 % in a diagonal direction and has a depth of 50 % in a vertical direction with respect to the tube axis(Z). At the same time, the region of the second core(139) has a depth of 90 % in a diagonal direction and has a depth of 50 % in a vertical direction with respect to the tube axis(Z).