液晶螢幕之自動調光與變頻器效率之提升

機構典藏 > College of Engineering > Graduate Institute & Department of Electrical Engineering > Thesis > Item 987654321/35749

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Title:	液晶螢幕之自動調光與變頻器效率之提升
Other Titles:	Automatic brightness of liquid crystal display and improved efficiency of inverter
Authors:	江晉一;Chiang, Chin-i
Contributors:	淡江大學電機工程學系碩士在職專班翁慶昌;Wong, Ching-chang
Keywords:	冷陰極燈管;變頻器;Cold Cathode Fluorescent Lamp (CCFL);Inverter
Date:	2008
Issue Date:	2010-01-11 07:06:05 (UTC+8)
Abstract:	本論文針對液晶螢幕背光源所使用之冷陰極燈管與變頻器搭配時，調整全橋式(Full Bridge)變頻諧振電路之串聯電容(Cs)與並聯電容(Cp)電容值的搭配，提升變頻器之效率，並實際調整串聯電容(Cs)與並聯電容(Cp)電容值，測試變頻器效率提升數據與波形，並加入環境光源感測器(Ambient Light Sensor, ALS)，使變頻器能隨環境光源自動調光，達到節省筆記型電腦上電池能量的消耗，延長筆記型電腦電池的使用時間。 For the module of Cold Cathode Fluorescent Lamp (CCFL) and inverter using full bridge resonant in LCD backlight, the values of capacitors Cs and Cp of inverter are adjusted to get the actual data. It is proved that the work efficiency of inverter can be improved by adjusting the value of capacitors Cs and Cp. By adding the Ambient Light Sensor (ALS), the brightness of the screen of notebook PCs could be automatically adjusted with the change of environment by inverter, so as to reduce the wastage of the battery and extend it''s lifetime.
Appears in Collections:	[Graduate Institute & Department of Electrical Engineering] Thesis

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