| 摘要 |
PURPOSE:To improve a response speed and to prevent the decrease of contrast by using a liquid crystal formed by adding a chiral liquid crystal to a nematic liquid crystal is used as a liquid crystal and orienting oriented films in such a manner that the inclination angles of the liquid crystal molecules thereof are not complementary between the upper and lower oriented films. CONSTITUTION:The liquid crystal formed by adding the chiral liquid crystal to the nematic liquid crystal is used as the liquid crystal 18 of the liquid crystal display element disposed between two sheets of polarizing plates 20a, 20b. The oriented films 14a, 14b are formed on the surfaces, which face each other, of transparent substrates 10a and 10b and are subjected to an orientation treatment for deformation of the substrate surfaces to change the rubbing direction of the oriented films in such a manner that the inclination angles theta of the liquid crystal molecules 18 are not complementary between the upper and lower oriented films. The term 'the inclination angles are not complementary' refers to the case in which the inclination angle theta of the upper substrate surface 10a and the inclination angle theta of the lower substrate surface 10b when the liquid crystal molecules 18 turn 90 deg. are exactly reverse. The arrangement defect by the twist of the liquid crystal molecules is prevented in this way, by which the unequal display is eliminated and the display quantity is improved. |
