Patent ID: 6587172
Filing Date: 2003-07-01
Classification: G02F

Abstract:
A liquid crystal display comprising:a liquid crystal cell having an extraordinary axis; a first retarder optically coupled to the liquid crystal cell, the first retarder having an extraordinary axis aligned at an angle to the extraordinary axis of the liquid crystal cell, the angle sufficient to produce a desired effective retardance of the first retarder within the display different from a specified retardance of the first retarder; a first polarizing element optically coupled to the display; an adjustable voltage source coupled to the liquid crystal cell for biasing the liquid crystal cell; a light source configured to supply light in a sequence of wavelengths to the liquid crystal display; and a sequencer configured to adjust the voltage of the voltage source among a set of voltages suitable for the wavelengths of the sequence of wavelengths of light of the light source.