DRIVING METHOD OF EXTERNAL ELECTRODE FLUORESCENT LAMP INVERTER FOR BACKLIGHT

• Main Authors: MIN, BYOUNG OWN, KIM, JONG SUN, OH, WON SIK, MIN, SUOK GYU, MOON, GUN WOO
• Format: Patent
• Language: English
• Published: 14.11.2006
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A driving method of an external electrode fluorescent lamp inverter for a backlight is provided to effectively control the switching of a full-bridge inverter switch device by applying a square wave voltage through self-excitation. A driving method of an external electrode fluorescent lamp inverter for a backlight includes the steps of: applying a square wave voltage for driving the external electrode fluorescent lamp to a primary side of a transformer; and making the external electrode fluorescent lamp emit light through self-discharge by applying a frequency of the square wave voltage to the primary side of the transformer in a region of substantially half of a resonance frequency determined by capacitance of the external electrode fluorescent lamp and parasitic inductance of the transformer.