News

28 August 2009

 

Osram claims smallest 1W LEDs for backlighting LCD panels

Osram Opto Semiconductors GmbH of Regensburg, Germany has introduced what it claims is the smallest 1W LEDs for backlighting LCD panels. Measuring just 3mm x 3mm x 1.6mm and integrating an polynomial lens (with a beam angle of 125°) with optimized beam characteristics for maximum light extraction, the two white versions of the new OSLON LX LED allow efficient side injection of almost 80% of the emitted light into light guides with a thickness of just 2-4mm. This enables the manufacture of ultra-thin-profile displays.

The OSLON LX is manufactured using the firm’s latest ThinGaN chip technology with chip-level conversion, and provides high optical efficiency and extremely uniform distribution of light, the firm claims. The substrate and lens materials are optimized for very long lifetimes, exceeding those of CCFLs (cold-cathode fluorescent lamps).

The compact LED format and high light output (typically 75lm or 90lm at an operating current of 350mA) is sufficient to inject the light from two sides or even from only one side to provide uniform backlighting for computer monitors and TVs of up to 65-inches in diagonal size.

The OSLON LX is available for two color spaces. The multi-white version (high color gamut white) covers 100% of the sRGB color space and has a typical light output of 75lm. The ultra-white version covers 80% of the sRGB color space and has a typical light output of 90lm. “Manufacturers who require only 80% of the sRGB standard, such as in data processing or industrial applications, can opt for the more efficient ultra-white version, enabling them to achieve the required brightness level with fewer LEDs and with up to 30% savings in costs,” says Winifred Schwedler, marketing manager for LCD Backlighting. “So, every customer can have precisely the LEDs that they need for their particular application.”

TVs equipped with OSLON LX LEDs will be premiered at next week’s 2009 IFA exhibition in Berlin (4-9 September).

See related items:

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LCD backlight LEDs to grow from 8bn in 2008 to 34bn in 2012

Large-area LED-backlit LCD panel shipments pass 10m units in Q1, reaching 12% penetration

Penetration of LED-backlit LCD-TVs to grow 13-fold by 2013

Backlighting demand produces 'flood of orders' for Taiwan's LED chip makers

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