Title :
An analysis of the backlight inverter by topologies
Author :
Kweon, Gie Hyoun ; Lim, Young Cheol ; Yang, Seung Hak
Author_Institution :
Dept. of Electr. Eng., Chonnam Nat. Univ., Kwangju, South Korea
Abstract :
Modern display panels are large and thin, and require a high voltage for the lamp. As the market demand for large display screens is increases, inverters needs to be small, high-powered, and very efficient. The backlight inverter used in a laptop computer is investigated in this paper. It has been difficult for the electromagnetic transformer in the inverter to obtain a high efficiency and compact profile. In this study, a piezoelectric transformer (PT) is used and it is shown that it reduces the loss and volume compared to the standard electromagnetic transformer. The results of the comparison with input-output and brightness-efficiency characteristics show the possibilities of lower profile and high efficiency in backlight inverters
Keywords :
DC-AC power convertors; bridge circuits; invertors; lamps; laptop computers; liquid crystal displays; piezoelectric devices; power supplies to apparatus; power transformers; backlight inverter topologies analysis; brightness-efficiency characteristics; display panels; high-voltage lamps; input-output characteristics; laptop computer; piezoelectric transformer; topology classification; Brightness; Computer displays; Consumer electronics; Frequency; Inverters; Lamps; Large screen displays; Portable computers; Topology; Voltage;
Conference_Titel :
Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on
Conference_Location :
Pusan
Print_ISBN :
0-7803-7090-2
DOI :
10.1109/ISIE.2001.931588
