A new concept high luminance LCD backlight
نویسندگان
چکیده
منابع مشابه
Backlight Local Dimming Algorithm for High Contrast LCD-TV
A backlight local dimming algorithm is proposed to achieve high static contrast more than 10000:1 on the LCD-TV which is mounted by an LEDarray backlight. On the dark region of the image, the backlight is dimmed to reduce light leakage and get deep dark. The proposed algorithm can avoid or significantly reduce such annoying local dimming artifacts as luminance decrease, nonuniformity and screen...
متن کاملHigh luminance hybrid light guide plate for backlight module application.
We introduce a hybrid backlight module, which consists of a hybrid light guide plate (HLGP) and a brightness enhancement film (BEF). The HLGP comprises functions of a conventional light guide plate, a reflector, and a BEF. The HLGP allows one-dimensional rays to be collimated. We add a BEF above the HLGP, and let the crossed-dimension rays to be collimated. Comparing with the conventional edge-...
متن کاملWide color gamut LCD with a quantum dot backlight.
We analyze the color performance and system efficiency of three commonly employed liquid crystal display modes with a blue LED-pumped red and green quantum dots (QDs) backlight. Based on the measured QD emission spectra, we can achieve 115% color gamut in CIE 1931 and 140% in CIE 1976 color space, while keeping the same energy efficiency as conventional backlights. Next, we apply multi-objectiv...
متن کاملUltracompact LCD Backlight Inverters A Svelte Beast Cuts High Voltage Down to Size
The liquid crystal display (LCD) has become ubiquitous. It is in use everywhere, from personal computers of all sizes to point-of-sale terminals as well as instruments, autos and medical apparatus. The LCD utilizes a cold cathode fluorescent lamp (CCFL) as a light source to back light the display. The CCFL requires a high voltage AC supply for operation. Typically, over 1000 volts RMS is requir...
متن کاملAn 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 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: Journal of the Illuminating Engineering Institute of Japan
سال: 1997
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1980.81.appendix_228