An LCD Backlight-Module Driver Using a New Multi-Lamp Current Sharing Technique(<Special Section>Electronic Displays)

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概要

• 論文の詳細を見る

• This paper proposes a backlight module which drives multiple cold-cathode fluorescent lamps (CCFLs) with a current mirror technique to equalize the driving current for each lamp. We first adopt a half-bridge parallel-resonant inverter as the main circuit and use a single-input, multiple-output transformer to drive the multi-CCFLs. Next, we introduce current-mirror circuits to create a new current-sharing circuit, in which its current reference node and the parallel-connected multi-load nodes are used to accurately equalize all CCFLs' driving current. This will balance each lamp's brightness and, consequently, improve the picture display quality of the related liquid crystal display (LCD). This paper details the design concept for each component value with the assistance of an actual design example. The results of the example are examined with its actual measurements, which consequently verify the correctness of the proposed control strategy.

• 社団法人電子情報通信学会の論文
• 2005-11-01

著者

• Chen John

  St. John's & St. Mary's Institute Of Technology

• Chen John

  St. John's University

• LIN Chang-Hua

  St. John's University

• WEN Fuhliang

  St. John's University

• Wen Fuhliang

  St. John's Univ. Taipei Twn

• Lin Chang-hua

  St. John's University

関連論文

• The Tracking of the Optimal Operating Frequency in a Class E Backlight Inverter Using the PLL Technique(PLL, Analog Circuit and Device Technologies)
• An LCD Backlight-Module Driver Using a New Multi-Lamp Current Sharing Technique(Electronic Displays)
• An Ultrasonic Actuating Driver for a Central Supporting Bending Mode Using a Motional Current Technique

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