A New Current-Balancing Multi-Channel LED Driver for a Large Screen LCD Backlight Unit
نویسندگان
چکیده
منابع مشابه
An LCD Backlight-Module Driver Using a New Multi-Lamp Current Sharing Technique
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 halfbridge 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 curren...
متن کاملLED Backlight: Enhancement of picture quality on LCD screen
LED backlight for LCD is an emerging technology with vast performance potential compared to CCFL backlight. The key performance which directly impacts the consumer is the image quality on LCD screen. This paper will review some of the performance enhancements in image quality arising from LED backlight.
متن کاملsolution of security constrained unit commitment problem by a new multi-objective optimization method
چکیده-پخش بار بهینه به عنوان یکی از ابزار زیر بنایی برای تحلیل سیستم های قدرت پیچیده ،برای مدت طولانی مورد بررسی قرار گرفته است.پخش بار بهینه توابع هدف یک سیستم قدرت از جمله تابع هزینه سوخت ،آلودگی ،تلفات را بهینه می کند،و هم زمان قیود سیستم قدرت را نیز برآورده می کند.در کلی ترین حالتopf یک مساله بهینه سازی غیر خطی ،غیر محدب،مقیاس بزرگ،و ایستا می باشد که می تواند شامل متغیرهای کنترلی پیوسته و گ...
Color shift reduction of a multi-domain IPS-LCD using RGB-LED backlight.
Color gamut and static and dynamic color shifts of a multi-domain in-plane-switching liquid crystal display (IPS LCD) are calculated quantitatively using RGB (red, green, and blue) light-emitting diodes (LEDs) and cold-cathode fluorescent lamp (CCFL) backlights. Simulation results indicate that the LED backlight exhibits a wider color gamut, better angular color uniformity, and 2-4X smaller sta...
متن کاملWhite LED Backlight Control for Motion Blur Reduction and Power Minimization in Large LCD TVs
A 1-D LED backlight scanning and a 2-D local dimming technique for large LCD TVs are presented. These techniques not only reduce the motion blur artifacts by means of impulse representation of images in video but also increase the static contrast ratio by means of local dimming in the image(s). Both techniques exploit a unique feature of LED backlight in large LCD TVs in which the whole panel i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Transactions of the Korean Institute of Power Electronics
سال: 2010
ISSN: 1229-2214
DOI: 10.6113/tkpe.2010.15.2.111