Patent ID: 7463328

Claim:
A liquid crystal display device comprising a liquid crystal layer between first and second substrates, the liquid crystal layer being provided between electrodes, said liquid crystal layer comprising a liquid crystalline material including liquid crystal molecules and fine particles, and wherein the liquid crystal layer is substantially optically isotropic so that the liquid crystal molecules therein are oriented in many different directions around the particles when voltage applied is lower than a threshold value and undergoes optical transition due to change in the arrangement of the liquid crystal molecules when applied voltage is not lower than the threshold value; wherein said fine particles have an average particle diameter of not more than 0.2 μm, and wherein the distance between the fine particles in the liquid crystal layer is shorter than a wavelength of visible light; and wherein said liquid crystal display device is provided with polarizing plates arranged in a cross nicol manner on respective sides of the liquid crystal layer to yield a black display in optically isotropic state.