converted into linearly polarized light through the linear polarizer 46 the linearly polarized light is changed into right handed circularly polarized light through the retardation film 44 the right handed circularly polarized light passes through the liquid crystal layer 40 and the color filter 36 u201c as is u201d and then is absorbed by the black background 34 formed on either surface of the second substrate 32 0064 fig8 shows the state of light while it passes through each component in the nb mode device when an electric field is not applied to liquid crystal the natural light is first converted into linearly polarized light through the linear polarizer 46 the linearly polarized light is changed into left handed circularly polarized light through the retardation film 44 the left handed circularly polarized light is converted into right handed polarized light through the liquid crystal layer 40 and then the right handed polarized light passes through the color filter 36 u201c as is u201d and is absorbed by the black background 34 formed on either surface of the second substrate 32 0066 fig9 shows the state of light while it passes through each components in the nb mode device when an electric field is applied to the liquid crystal layer the natural light is first converted into linearly polarized light through the linear polarizer 46 the linearly polarized light is changed into left handed circularly polarized light through the retardation film 44 the left handed circularly polarized light passes through the liquid.