Products, Materials & Tools | Nov 09, 2010

TOPLED Compact 4520 Extends the TOPLED Range

Super flat displays are now possible thanks to the new TOPLED Compact 4520 from OSRAM Opto Semiconductors. This LED is one of the smallest for screen backlighting and is the first LED for this application to have a UX:3 chip. It is therefore ideal for pulse mode, can be loaded with a very high current and helps produce razor sharp pictures.

The trend toward flatter and flatter displays calls for exceptionally slim backlighting systems and high quality of light. These are precisely the properties that the new TOPLED Compact 4520 has to offer. This tiny light source with a brightness of 35 lm (at 150mA) and an efficiency of 72 lm/W is suitable for single or double-sided injection of light into light guides up to 2 mm and covers a color space of more than 100% sRGB. Thanks to its UX:3 chip, which offer excellent linearity between current and brightness, it is brighter in high-current pulse mode than all the LEDs based on other chip technologies.

“The TOPLED Compact 4520 has been designed specifically for super flat displays”, said Winfried Schwedler, Marketing Manager Backlighting at OSRAM Opto Semiconductors. “Its extreme brightness and high-current pulse mode help produce razor sharp high-contrast images with no wipe effects.” Pulse mode provides greater contrast on dark images by darkening or dimming individual segments of the image. It also prevents wipe effects on fast moving images. To achieve this, parts of the backlighting are briefly switched off. This takes place so quickly that the human eye cannot detect the dark phases. The overall result is a bright image with consistent color quality.

Like the other members of the TOPLED family, the TOPLED Compact 4520 is flat encapsulated and does not have a lens. It is therefore ideal for single or double-sided injecting in light guides. The tried and tested TOPLED package measures 4.5 x 2.0 x 0.8 mm. It is synonymous with reliability and can be manufactured in large volumes.

About OSRAM OS:
OSRAM is part of the Industry sector of Siemens and one of the two leading lighting manufacturers in the world. Its subsidiary, OSRAM Opto Semiconductors GmbH in Regensburg (Germany), offers its customers solutions based on semiconductor technology for lighting, sensor and visualization applications. OSRAM Opto Semiconductors has production sites in Regensburg (Germany) and Penang (Malaysia). Its headquarters for North America is in Sunnyvale (USA), and for Asia in Hong Kong. OSRAM Opto Semiconductors also has sales offices throughout the world. For more information go to www.osram-os.com.

FEATURED

A New Fixing Technology for Optics Brings Additional Time Savings in Luminaire Assembly

A New Fixing Technology for Optics Brings Additional Time Savings in Luminaire Assembly Today it is often the fixing technology which decides how efficiently an LED luminaire can be produced. Innovative assembly procedures help in production by simplifying and shortening processes or eliminating them completely. Just a few minutes are often enough to make a manufacturer more ... Read more »

FEATURED

Cree Launches Industry’s Highest Efficacy 90 CRI COB LEDs

Cree Launches Industry’s Highest Efficacy 90 CRI COB LEDs Cree, Inc. announces the XLamp® eTone™ LEDs, a breakthrough set of chip-on-board (COB) LEDs that delivers beautiful 90 color rendering index (CRI) light quality at the same efficacy as today’s standard 80 CRI LEDs. Delivering up to 155 lumens per watt (LPW) at 3000 K CCT, 85°C, Cree’s new eTone COB ... Read more »

FEATURED

PerfectWhite: Luminus’ Latest Spectrally Tuned COB

PerfectWhite: Luminus’ Latest Spectrally Tuned COB Spectrally tuned sources are the essential components of human-centric lighting and Luminus PerfectWhite is it’s newest source, joining the Sensus and AccuWhite products, that has been purpose-designed and improves upon the light from conventional sources. PerfectWhite™, which closely replicates ... Read more »

EDITORIAL

High Conductive Foils Enabling Large Area Lighting

High Conductive Foils Enabling Large Area Lighting Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as one of the leading partners for research and development for surface technologies and organic electronics and Sefar AG, a leading manufacturer of precision fabrics from monofilaments, developed a roll-to-roll ... Read more »

page_peel