10 September 2010


Osram’s CERAMOS LEDs used in Dolby’s professional reference monitor

Osram Opto Semiconductors GmbH of Regensburg, Germany says that 1536 of its CERAMOS RGB Multi-chip LEDs are used in Dolby’s new PRM-4200 LED-backlit professional reference monitor, which is designed specifically for professional content creation applications and targeted at production and post-production of movies and TV shows. Osram claims that its LEDs provide high performance with wider color gamut, outstanding color accuracy, higher dynamic range and true deep blacks.

Picture: Dolby’s PRM 4200 monitor, which uses Osram’s CERAMOS MultiLED.

The Dolby PRM-4200 professional reference monitor is a 42-inch LED-backlit LCD tailored for professional applications that require accurate and true color reproduction, increased dynamic range, and deep black levels as well as excellent grayscale tracking. Osram says that the use of its CERAMOS Multi-chip LEDs, in combination with Dolby’s proprietary dual-modulation and calibration technologies, enables the display to meet these demanding requirements. Conventional monitors with CCFL (cold cathode fluorescent lamp) backlighting have limited color gamut and, for example, display deep blacks as dark gray.

Osram says that its CERAMOS MultiLEDs deliver the high performance required by the professional content creation industry. The red, green and blue chips are positioned so that the color mix has the same appearance when observed from a wide range of angles. The ceramic package measures only 0.9mm high and 3mm x 4.5mm, suiting flat backlights, and the ceramic material makes it very stable over a long period of time, with negligible degradation in brightness or drift in colors with lifetimes in excess of 50,000 hours.

“The trend towards LEDs for use in display applications is clear, and our analysis also shows that more than 50% of consumer TV sets will be equipped with LED backlighting in 1-2 years,” says Winfried Schwedler, marketing manager at Osram Opto Semiconductors.

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