Osram unveils enhanced thin-film chip technology

Osram Opto Semiconductors has developed an advanced version of its thin-film LED chip technology which has already been incorporated into several advanced device-level products. In late November, Osram unveiled new Power TopLED packages available at two brightness levels and in a new range of colors. The orange Power TopLED, for example, is available in two versions with fluxes of 3 lm or 7 lm, at an operating current of 50 mA.

Osram subsequently announced a new addition to its Golden Dragon family of high-power packages, aimed specifically at automotive applications such as daytime running lights. The devices produce a typical luminous flux of 64 lm from an operating current of 500 mA, compared with 40 lm for the previous version, and have a forward voltage which has been reduced from 3.8 V to 3.2 V. The company says that an optimized package, combined with a special carrier material, ensures excellent heat dissipation.

The new products are based around Osram's thin-film chip technology, which has been in production since 2002. The company continues to make iterative improvements to the technology, which is applicable to both InGaN-based devices (which are known as Power ThinGaN) and AlGaInP-based devices.

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