UC researchers improve efficiency of LCD displays

A team of researchers from the University of Cincinnati have found a new way to improve the efficiency of LCD panels by preventing the waste of a large part of the light generated.

When the phosphorescent materials (pixels) in the LCD panels are exposed to the researchers’ ultraviolet light, they emit photons that can then be channelled back onto the pixels by tiny “waveguides”.

A liquid lens installed behind each pixel, which changes focus under the influence of electricity, controls whether UV light reaches the pixel to control its brightness.

As a result, less than 50 percent of the light generated in the display is wasted, compared to nearly 90 percent for conventional LCD panels.

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