Colour LEDs with oval radiation pattern
19 November 2014
Opto-Electronics
Osram Opto Semiconductors has launched an LED with oval light-radiating characteristics for large-screen video walls or digital road signs. Thanks to a compact housing measuring just 2,1 x 2,7 x 1,5 mm, almost twice as many Displix Oval LEDs can be mounted on a board than with ordinary radial diodes, doubling both the pixel density and the resolution of displays. As a result, the images displayed are extremely vivid, with high colour homogeneity.
An additional advantage of the high density is the fact that a lower pixel brightness is required, so that the individual LEDs take a lower current. In combination with the durable housing materials, this lower output extends the lifetime of the diodes.
The device has a black QFN (quad flat no leads) housing, which additionally boosts the image quality. It reduces reflections and increases the contrast and colour quality of the images displayed. Being surface mounted, it has very low tilt tolerances per diode. A display fitted with the new LEDs hence has a stable and very homogenous colour appearance when viewed from virtually any angle.
Both the processes and the processing of the Displix Oval are much simpler than with radial LEDs, greatly reducing customers’ further processing costs. Being very flat, it requires less silicone for the potting of the boards to protect the contacts from rain and moisture. This enables customers to reduce the amount of material used, which again has a considerable impact on their outlays.
The Displix Oval will be available from October 2014 in the colours yellow, red, green and blue.
For more information contact Ryan Hunt, Osram Opto Semiconductors, +27 (0)79 525 1779, [email protected], www.osram-os.com
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