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2007-03-09 White LEDs tout higher light-delivery efficiency
Since the GaN substrates and light-emitting layer in Panasonic's high-power white LEDs have the same refractive index, its light delivery efficiency is over 1.5 times that of conventional sapphire-based LED element.
2008-10-27 White LED driver suits up for automotive displays
Rohm Electronics white LED driver IC (BD8113EFV-E2) provides constant current for white LED backlights in medium- to large-format TFT-LCD automotive displays.
2007-01-01 Low-EMI charge pump drives six white LEDs
Allegro's A8434 touts a proprietary high-efficiency, low-EMI charge pump design, which provides a well regulated output for driving up to six white LEDs
2006-11-14 LED drivers address mercury-free requirement
Maxim said its new MAX16807-MAX16810 LED drivers are the first fully integrated, high-brightness devices that address industry needs for mercury-free, high-contrast lighting in displays
2007-03-15 LED driver with current balancing suits LCD apps
Maxim's MAX8790 white LED driver for large LCD panels device uses a built-in string-current-control circuit to achieve 1.5 percent regulation accuracy between strings, which ensures even brightness for all LEDs.
2011-05-18 LED concept gives off 'Brilliant-Mix' warm light
OSRAM Opto Semiconductors unveils their 'Brilliant Mix' concept that offer warm white light with high luminous efficacy (110lm/W) and CRI of more than 90
2008-07-16 Hysteretic converters for multiple LED lighting
Hysteretic converters are used to drive LEDs in lamp replacement and emerging lighting applications. The ease of use and inherent stability of the topology make it a first choice for efficient inductive switching regulator solutions. The simple topology can be used in different configurations or other unintended external applications.
2006-05-05 Intelligent' LED drivers enhance video signal processing
Macroblock's PWM-embedded LED drivers increase refresh rate and provide 16-bit color depths for better image and color processing of video display panels
2003-12-16 Zetex LED drivers add true analog dimming
Zetex has launched what it claims is the first white LED driver with the option of an integrated true analog dimming mode, offering a noise-free alternative to pulsed dimming control.
2005-08-17 Young ECC unveils white LEDs based on non-YAG tech
Components distributor Young ECC Electronics is unveiling new lines of white LEDs that are based on non-yttrium aluminum garnet (non-YAG) phosphor technology
2008-04-08 Will LED-backlit LCD TVs break into mass market
Stunningly clear pictures are produced by LED-backlit LCD TVs, enabled by Dolby Laboratories' High Dynamic Range (HDR) technology. Unclear, though, is how much consumers will have to pay for that kind of picture quality
2005-06-01 Wide-input voltage SEPIC drives high-power white LEDs
What are the advantages white LEDs have over more conventional lighting
2005-06-30 White-LED driver touts innovative brightness control
Micrel points to its MIC2297, a PWM boost regulator that's optimized for driving 10 white LEDs in series, for its innovative brightness control circuitry, which in addition to conserving power also helps to cut noise and EMI
2006-04-17 White-LED chips lit for efficiency race
Nichia has developed a white-LED chip with 100lumen/watt efficiency, with volume production expected this year.
2014-09-01 White-chip scale packages offer up to 80% cost reduction
Rated for input power up to 3W, the the ReadyMount Enhanced CSP from SemiLEDs is a fully packaged white emitter SMD component, ready for surface mounting on any board level module or COB application
2008-10-16 White spaces marked off as wireless arena
When the U.S. DTV switchover takes place, white spaces scattered throughout the 54MHz to 698MHz region of the RF spectrum will be available for use. A range war is raging over how this should be done. Google, Hewlett-Packard, Microsoft, Motorola and public-interest groups and media companies have created the Wireless Innovation Alliance (WIA) to sort it out
2008-02-21 White multichip LEDs dissipate heat efficiently
Allegro has announced a new series of white multichip LEDs that achieve enhanced thermal dissipation through the incorporated heat sink on the bottom of the package
2008-12-19 White LEDs with InGaN/TAG suit automotive apps
Vishay Intertechnology Inc. has launched what it claims to be the first series of high-intensity white power SMD LEDs in the CLCC-2 flat ceramic package to offer InGaN/TAG on sapphire technology
2010-02-09 White LEDs provide 300K/W thermal resistance
Vishay Intertechnology Inc. has developed power surface-mount white LEDs optimized to provide very low thermal resistance down to 300K/W and power dissipation up to 200mW
2007-11-21 White LEDs outshine light bulbs
An international team of researchers demonstrated the first white LEDs to achieve a high CRI that could pave way to the adoption of white LEDs to replace incandescent bulbs and fluorescent tubes
2012-02-10 White LEDs offer up to 148lm/W at 85C
Cree's XLamp XT-E white LED comes in a 3.45 x 3.45mm footprint and claims push LED adoption and lower cost.
2008-09-29 White LEDs enable optimum optical power
Vishay Intertechnology has released what it claimed as the industry's first high-intensity white power SMD LEDs in CLCC-6 and CLCC-6 flat ceramic packages to offer InGaN/TAG on sapphire technology for high optical power from 2,240mcd to 5,600mcd
2007-08-24 White LEDs emit 7cd at medium-range current
Rohm has developed white LEDs that incorporate a high heat dissipation package to efficiently emit 7cdsaid to be the highest in the industryusing current of 50-150mA
2008-07-28 White LEDs come in CLCC-2 flat ceramic package
Vishay Intertechnology Inc. claims the industry's first series of high-intensity white power SMD LEDs in the CLCC-2 flat ceramic package
2012-03-06 White LEDs boast brightness of 33,500mcd
Featuring luminous flux from 67.2-113.6lm, the 1W Little Star LEDs from Vishay are designed for a high current drive of up to 350mA.
2006-03-28 White LED touts high brightness, small size
Vishay Intertechnology Inc. offers a small and bright white MiniLED in a low-profile 2.3-by-1.3-by-1.4mm package
2008-07-02 White LED shines bright, promises long life
Malaysia-based SMT LED manufacturer Dominant Semiconductors Sdn Bhd is offering now a brighter white LED in the DomiLED product range (DDW-PJG).
2007-03-29 White LED promises up to 50,000hrs operation
Dominant Semiconductors has unveiled the new Power DomiLED white LED that promises a lifetime of up to 50,000hrs.
2007-07-24 White LED package achieves ultralow profile of 1.5mm
Designated the OVS5WBCR4 Series, the 0.5W surface mount white LED package from TT Electronics Optek Technology, features an ultra-low profile of just 1.5mm.
2005-09-07 White LED offers high luminance
Dominant Semiconductors launched a new range of white LEDs that offers "high luminance and durability," promising superior performance in different illumination apps
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