Digital Lamp Balance System With Individual Lamp Current Control Capability for an LCD TV
A digital lamp balance system that equalizes lamp current of liquid crystal display (LCD) backlight is implemented in this letter. The proposed digital balance circuit consists of a balance switch which is in series with the lamp and a dc-blocking capacitor which also acts as a ballast capacitor for...
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| Veröffentlicht in: | IEEE transactions on power electronics 2012-02, Vol.27 (2), p.637-641 |
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| container_title | IEEE transactions on power electronics |
| container_volume | 27 |
| creator | CHO, Je-Hyung PARK, Sang-Hyun SEONG, Hyun-Wook KIM, Hyoung-Suk PARK, Jin-Sik CHOI, Eun-Seok YOUN, Myung-Joong |
| description | A digital lamp balance system that equalizes lamp current of liquid crystal display (LCD) backlight is implemented in this letter. The proposed digital balance circuit consists of a balance switch which is in series with the lamp and a dc-blocking capacitor which also acts as a ballast capacitor for parallel lighting. The parasitic capacitance of the balance switch is used as parallel impedance which makes the lamp current decrease. Microcontroller unit controls each lamp current by changing the pulsewidth modulation duty ratio of a balance switch. The specified circuit, analysis, balance principles, and experimental results of the proposed system will be presented for a 46-in LCD TV. |
| doi_str_mv | 10.1109/TPEL.2011.2172819 |
| format | Article |
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The proposed digital balance circuit consists of a balance switch which is in series with the lamp and a dc-blocking capacitor which also acts as a ballast capacitor for parallel lighting. The parasitic capacitance of the balance switch is used as parallel impedance which makes the lamp current decrease. Microcontroller unit controls each lamp current by changing the pulsewidth modulation duty ratio of a balance switch. The specified circuit, analysis, balance principles, and experimental results of the proposed system will be presented for a 46-in LCD TV.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2011.2172819</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Applied sciences ; Backlight unit ; Capacitors ; Circuit properties ; Circuits ; cold cathode fluorescent lamp (CCFL) ; Controllers ; Digital circuits ; Display ; electric ballast ; Electric, optical and optoelectronic circuits ; Electrical engineering. Electrical power engineering ; Electrical equipment ; Electrical machines ; Electronic ballasts ; Electronic circuits ; Electronics ; Exact sciences and technology ; Imaging devices ; Impedance ; Inverters ; lamp current balance ; Lamps ; LCDs ; liquid crystal display (LCD) TV ; Liquid crystal displays ; Regulation and control ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; Switches ; Switching circuits ; Television</subject><ispartof>IEEE transactions on power electronics, 2012-02, Vol.27 (2), p.637-641</ispartof><rights>2015 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Feb 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c275t-4efb8de04e72f15d7c239f37517aceb2d1fbcfe750f2f47db18f94b7c6f2a86d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6054060$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27903,27904,54736</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/6054060$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26016102$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>CHO, Je-Hyung</creatorcontrib><creatorcontrib>PARK, Sang-Hyun</creatorcontrib><creatorcontrib>SEONG, Hyun-Wook</creatorcontrib><creatorcontrib>KIM, Hyoung-Suk</creatorcontrib><creatorcontrib>PARK, Jin-Sik</creatorcontrib><creatorcontrib>CHOI, Eun-Seok</creatorcontrib><creatorcontrib>YOUN, Myung-Joong</creatorcontrib><title>Digital Lamp Balance System With Individual Lamp Current Control Capability for an LCD TV</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>A digital lamp balance system that equalizes lamp current of liquid crystal display (LCD) backlight is implemented in this letter. The proposed digital balance circuit consists of a balance switch which is in series with the lamp and a dc-blocking capacitor which also acts as a ballast capacitor for parallel lighting. The parasitic capacitance of the balance switch is used as parallel impedance which makes the lamp current decrease. Microcontroller unit controls each lamp current by changing the pulsewidth modulation duty ratio of a balance switch. The specified circuit, analysis, balance principles, and experimental results of the proposed system will be presented for a 46-in LCD TV.</description><subject>Applied sciences</subject><subject>Backlight unit</subject><subject>Capacitors</subject><subject>Circuit properties</subject><subject>Circuits</subject><subject>cold cathode fluorescent lamp (CCFL)</subject><subject>Controllers</subject><subject>Digital circuits</subject><subject>Display</subject><subject>electric ballast</subject><subject>Electric, optical and optoelectronic circuits</subject><subject>Electrical engineering. Electrical power engineering</subject><subject>Electrical equipment</subject><subject>Electrical machines</subject><subject>Electronic ballasts</subject><subject>Electronic circuits</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Imaging devices</subject><subject>Impedance</subject><subject>Inverters</subject><subject>lamp current balance</subject><subject>Lamps</subject><subject>LCDs</subject><subject>liquid crystal display (LCD) TV</subject><subject>Liquid crystal displays</subject><subject>Regulation and control</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>Switches</subject><subject>Switching circuits</subject><subject>Television</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kMFKw0AQhhdRsFYfQLwsiMfUmU02mxw1rVoIKFgVT2GT7OqWNKm7G6Fvb0prmcMc5vv_gY-QS4QJIqS3i5dZPmGAOGEoWILpERlhGmEACOKYjCBJeJCkaXhKzpxbAmDEAUfkc2q-jJcNzeVqTe9lI9tK0deN82pFP4z_pvO2Nr-m7v-ZrLdWtZ5mXett19BMrmVpGuM3VHeWypbm2ZQu3s_JiZaNUxf7PSZvD7NF9hTkz4_z7C4PKia4DyKly6RWECnBNPJaVCxMdSg4ClmpktWoy0orwUEzHYm6xESnUSmqWDOZxHU4Jte73rXtfnrlfLHsetsOLwuMhxGccT5QuKMq2zlnlS7W1qyk3RQIxdZgsTVYbA0We4ND5mbfLF0lG20HN8YdgiyGoR7YwF3tOKOUOpxj4BHEEP4B18t5AA</recordid><startdate>20120201</startdate><enddate>20120201</enddate><creator>CHO, Je-Hyung</creator><creator>PARK, Sang-Hyun</creator><creator>SEONG, Hyun-Wook</creator><creator>KIM, Hyoung-Suk</creator><creator>PARK, Jin-Sik</creator><creator>CHOI, Eun-Seok</creator><creator>YOUN, Myung-Joong</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Electrical power engineering</topic><topic>Electrical equipment</topic><topic>Electrical machines</topic><topic>Electronic ballasts</topic><topic>Electronic circuits</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Imaging devices</topic><topic>Impedance</topic><topic>Inverters</topic><topic>lamp current balance</topic><topic>Lamps</topic><topic>LCDs</topic><topic>liquid crystal display (LCD) TV</topic><topic>Liquid crystal displays</topic><topic>Regulation and control</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>Switches</topic><topic>Switching circuits</topic><topic>Television</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>CHO, Je-Hyung</creatorcontrib><creatorcontrib>PARK, Sang-Hyun</creatorcontrib><creatorcontrib>SEONG, Hyun-Wook</creatorcontrib><creatorcontrib>KIM, Hyoung-Suk</creatorcontrib><creatorcontrib>PARK, Jin-Sik</creatorcontrib><creatorcontrib>CHOI, Eun-Seok</creatorcontrib><creatorcontrib>YOUN, Myung-Joong</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on power electronics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>CHO, Je-Hyung</au><au>PARK, Sang-Hyun</au><au>SEONG, Hyun-Wook</au><au>KIM, Hyoung-Suk</au><au>PARK, Jin-Sik</au><au>CHOI, Eun-Seok</au><au>YOUN, Myung-Joong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Digital Lamp Balance System With Individual Lamp Current Control Capability for an LCD TV</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2012-02-01</date><risdate>2012</risdate><volume>27</volume><issue>2</issue><spage>637</spage><epage>641</epage><pages>637-641</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>A digital lamp balance system that equalizes lamp current of liquid crystal display (LCD) backlight is implemented in this letter. The proposed digital balance circuit consists of a balance switch which is in series with the lamp and a dc-blocking capacitor which also acts as a ballast capacitor for parallel lighting. The parasitic capacitance of the balance switch is used as parallel impedance which makes the lamp current decrease. Microcontroller unit controls each lamp current by changing the pulsewidth modulation duty ratio of a balance switch. The specified circuit, analysis, balance principles, and experimental results of the proposed system will be presented for a 46-in LCD TV.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TPEL.2011.2172819</doi><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 0885-8993 |
| ispartof | IEEE transactions on power electronics, 2012-02, Vol.27 (2), p.637-641 |
| issn | 0885-8993 1941-0107 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Backlight unit Capacitors Circuit properties Circuits cold cathode fluorescent lamp (CCFL) Controllers Digital circuits Display electric ballast Electric, optical and optoelectronic circuits Electrical engineering. Electrical power engineering Electrical equipment Electrical machines Electronic ballasts Electronic circuits Electronics Exact sciences and technology Imaging devices Impedance Inverters lamp current balance Lamps LCDs liquid crystal display (LCD) TV Liquid crystal displays Regulation and control Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Switches Switching circuits Television |
| title | Digital Lamp Balance System With Individual Lamp Current Control Capability for an LCD TV |
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