NDLI: Multistring LED Backlight Driving System for LCD Panels With Color Sequential Display and Area Control

Content Provider	IEEE Xplore Digital Library
Author	Chang-Yu Wu Tsai-Fu Wu Jiun-Ren Tsai Yaow-Ming Chen Chien-Chih Chen
Copyright Year	1982
Abstract	In this paper, a multistring light-emitting diode (LED) backlight driving system for liquid crystal display (LCD) panels with color sequential display (CSD) and area control is proposed. In large-scale LCD panels, multistring LED backlights are required to provide sufficient back lighting. The most popular structure to achieve multistring current regulation is a current mirror. However, it cannot be applied to high-power LED (>100 mA) driving, and the number of LEDs in each string is highly limited. In the driving system, a multioutput flyback converter associated with a novel control IC is proposed to tightly regulate LED driving currents and to readily achieve CSD and area control. The proposed driving system for a 32-in LCD panel has been built, from which experimental measurements have verified that the proposed driving system has the following features: low power consumption, high power conversion efficiency, stable driving currents, and high reliability.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	3791
Ending Page	3800
Page Count	10
File Size	1530922
File Format	PDF
ISSN	02780046
Volume Number	55
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Light emitting diodes Liquid crystal displays Control systems Lighting control Power system reliability Large-scale systems LED lamps Current control Mirrors Current measurement liquid crystal display (LCD) Area control color sequential display (CSD) light-emitting diode (LED) area control LED LCD color sequential display
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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