Method of improving viewing angle and contrast of liquid crystal displays
AssigneeMotorola, Inc.
InventorsThomas J. Fitzgibbons, Patrick M. Dunn
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Abstract
A novel method of driving an LCD simultaneously provides improved viewing angle and improved contrast. Multiple driving voltages are applied to the LC cell to optimize both the viewing angle and the contrast. A first voltage that is optimized for wide viewing angle is applied to the LCD. A second voltage that is greater than the first voltage is selected to provide maximum contrast in the LCD. The first and second voltages are alternately applied to In the LCD, resulting in a display that has high contrast and a wide viewing angle.
Claims10
A method of driving an LCD to simultaneously provide improved viewing angle and improved contrast, comprising:
- applying a first voltage optimized for wide angle viewing to the LCD;
- applying a second voltage optimized for maximum contrast to the LCD, the second voltage being greater than the first voltage;
- and
- alternating between the first and second voltages.
Dependencies are inferred from the claim text.