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Illumination & Displays

LED patent fight winner Gertrude Neumark Rothschild dies

New York Times
18 November 2010

Gertrude Neumark Rothschild, whose research helped improve light-emitting and laser diodes now used in many cellphones, flat-screen televisions and Blu-ray disc players, and who waged a successful patent-infringement battle against some of the world's biggest electronics companies that yielded tens of millions of dollars in settlements and licensing fees, died on Nov. 11 in Rye, N.Y. She was 83.

In the 1980s, Professor Rothschild, who taught materials science and engineering at Columbia University, began studying the optical properties of wide bandgap semiconductors and developed diodes capable of using the upper range of the spectrum and serving as a superior light source.

The new short-wavelength LEDs, which emit blue, green, violet and ultraviolet light, were much more energy efficient, reliable and long-lived.

Full story from the New York Times