Reducing the parasitic capacitance effect in LCD panel for backlight module based on primary-side control and DPLL technique / Lin, Chang-Hua in IEEE transactions on industrial electronics, Vol. 56 N° 8 (Août 2009)  

Public ISBD [article]  inIEEE transactions on industrial electronics > Vol. 56 N° 8 (Août 2009) . - pp. 2918 - 2922 Titre : Reducing the parasitic capacitance effect in LCD panel for backlight module based on primary-side control and DPLL technique Type de document : texte imprimé Auteurs : Lin, Chang-Hua, Auteur ; Wang, Chien-Ming, Auteur ; Hung, Min-Hsuan, Auteur Article en page(s) : pp. 2918 - 2922 Note générale : Génie electrique Langues : Anglais (eng) Mots-clés : Backlight Cold cathode fluorescent lamp (CCFL) Digital phase-locked loop Leakage current effect Parasitic capacitance Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A digital-phase-locked-loop (DPLL)-based backlight module is proposed to reduce the leakage current effect in liquid crystal display (LCD). In this paper, the mathematical model of the cold cathode fluorescent lamp (CCFL) current, including the parasitic capacitance in LCD panel, is conducted to explore the influence of leakage current effect. Moreover, the primary-side control and the DPLL function are integrated to form a feedback mechanism to track the optimal operating frequency. Then, the influence of parasitic capacitance can be reduced so as to eliminate the leakage current effect. The experimental results agree with the theoretical predictions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4785129 [article] Reducing the parasitic capacitance effect in LCD panel for backlight module based on primary-side control and DPLL technique [texte imprimé] / Lin, Chang-Hua, Auteur ; Wang, Chien-Ming, Auteur ; Hung, Min-Hsuan, Auteur . - pp. 2918 - 2922. Génie electrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N° 8 (Août 2009) . - pp. 2918 - 2922 Mots-clés : Backlight Cold cathode fluorescent lamp (CCFL) Digital phase-locked loop Leakage current effect Parasitic capacitance Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : A digital-phase-locked-loop (DPLL)-based backlight module is proposed to reduce the leakage current effect in liquid crystal display (LCD). In this paper, the mathematical model of the cold cathode fluorescent lamp (CCFL) current, including the parasitic capacitance in LCD panel, is conducted to explore the influence of leakage current effect. Moreover, the primary-side control and the DPLL function are integrated to form a feedback mechanism to track the optimal operating frequency. Then, the influence of parasitic capacitance can be reduced so as to eliminate the leakage current effect. The experimental results agree with the theoretical predictions. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4785129

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