Award Date

12-2010

Degree Type

Thesis

Degree Name

Master of Science in Electrical Engineering (MSEE)

Department

Electrical and Computer Engineering

First Committee Member

Rama Venkat, Chair

Second Committee Member

Paolo Ginobbi

Third Committee Member

Yahia Baghzouz

Graduate Faculty Representative

Laxmi P. Gewali

Number of Pages

100

Abstract

In this research work, an innovative pixel architecture RGBW, consisting of red (R), green (G), blue (B), and white (W) LEDs, is designed and implemented for color generation. Energy consumption of new pixel architecture consisting of RGBW LEDs is compared to standard architecture consisting of RGB LEDs. Human perception experiments are conducted to study the differences in perception between the two architectures when the same colors are generated using RGBW vs. RGB. Measurements of power for a 32inch x 16inch LED display has proved up to 18% power savings for low saturated colors, up to 8% for high saturated colors and up to 30% for white color using RGBW as a substitute. In addition, experiments on human perception have shown that majority of test subjects could not differentiate between most colors displayed using RGB and RGBW showing that RGBW is an excellent substitute for RGB. Statistic analysis has shown that 90% of test subjects found the colors to be the same, whereas 86% test subjects found the intensities of the colors to be the same.

Keywords

Energy conservation; Energy Efficient LED Displays; Light; Colored; Light emitting diodes – Energy consumption

Disciplines

Electrical and Electronics | Power and Energy

Language

English


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