Abstract: The Aerospace and Defense display industry is in the midst of converting light sources used in AMLCD backlighting technology from fluorescent lamps to LEDs. Although challenging, the fluorescent backlighting technology delivered good product in high end applications. LEDs, however, have the promise of even greater efficiency and lower
cost. The history of LED backlighting is short and very dynamic; expectations are high and promises are many. It appears that for engineers developing backlights for high performance displays life has not become easier with the change of the technology.

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This presentation will discuss just one of many challenges engineer’s face: operation of LED backlights in high temperature environments. It will present experimental data showing several advantages of the RGB LED technology over other lamp technologies for high performance commercial and military application.

Biography: Walter Gurr graduated form the University of Auckland, New Zealand in 1995 with a Masters Degree in Power Electronics. He spent five years in his home country designing laser based military training equipment before moving to Seattle. Walter spent his first three years in the north-west at Universal Avionics developing avionics and cold cathode backlight power supplies for civil aviation. For the last five years he has been with Korry Electronics working his way through various hot cathode and LED based AMLCD backlight designs. From this work he has two pending patent
applications for LED drive and control technology. Walter recently made the move from Principle Engineer to Electrical Engineer Manager within Korry Electronics.

The Seminar is free. Please join the speaker for a no-host dinner after the seminar. Directions to the restaurant will be provided at the seminar. Non-Members are welcome. RSVP to Gary Johnson at Gary.Johnson@tek.com or (503) 627-1985. Please indicate if you plan to participate in the dinner.