Method for driving a color liquid crystal display
First Claim
1. A method for driving a color liquid crystal display for displaying a plurality of colors, the liquid crystal display comprising liquid crystal material sandwiched between electrodes, the thickness of the liquid crystal material comprising a cell gap, the liquid crystal display further comprising a light incident side and a light exiting side, the method comprising the steps of:
- applying a voltage (V) between the electrodes;
applying light of wavelength (λ
) to the light incident side;
measuring a phase difference (R) between the incident light and the exiting light; and
adjusting the voltage and wavelength to satisfy the expression 0.4≦
R(V)/λ
≦
0.85.
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Accused Products
Abstract
The present invention is directed to the prevention of reversal and deterioration of a screen at right and left viewing angles and upper and lower viewing angles in an OCB-mode liquid-crystal display.
It is possible to prevent deterioration of a screen by obtaining the optimum value of absolute value {R(V1)} of retardation before correction by phase compensation film!/wavelength (λ) at a lower-side driving voltage for each color of R, G, and B and thereby, preventing an optical rotation of liquid crystal on B wavelength. Specifically, B wavelength is set to R(V1)/λ≦0.85. By adjusting a cell gap of each color, display characteristics of a screen at right and left viewing angles are improved.
39 Citations
5 Claims
-
1. A method for driving a color liquid crystal display for displaying a plurality of colors, the liquid crystal display comprising liquid crystal material sandwiched between electrodes, the thickness of the liquid crystal material comprising a cell gap, the liquid crystal display further comprising a light incident side and a light exiting side, the method comprising the steps of:
-
applying a voltage (V) between the electrodes; applying light of wavelength (λ
) to the light incident side;measuring a phase difference (R) between the incident light and the exiting light; and adjusting the voltage and wavelength to satisfy the expression 0.4≦
R(V)/λ
≦
0.85. - View Dependent Claims (2, 3, 4, 5)
-
Specification