Liquid crystal display device and its manufacture

Abstract

Abstract PURPOSE:To continuously change the color tone at constant applied voltage by treating the electrode substrates so that a liq. crystal substance is oriented vertically to the substrates in a state where no electric field is applied and it is oriented parallel to the substrates when an electric field is applied and by continuously changing the angle between the orienting direction and the polarizing axis of a polarizer from 0 deg. to 90 deg.. CONSTITUTION:The surface of each electrode substrate 1 of a display element is covered with a shielding plate provided with an opening having the same size and shape as a display unit to be displayed. While moving the position of the opening on the substrate little by little and changing the angle of the substrate 1 to an evaporating source from 0 deg. to 90 deg. little by little in a fixed direction, inorg. oxide or inorg. fluoride is diagonally vapor-deposited to treat the substrate 1 so that a liq. crystal substance 7 is oriented in the vertical direction to the substrate 1. The liq. crystal substance 7 with negative dielectric anisotropy and a polygenetic dye 8 are filled into the space between a pair of such electrode substrates 1 to form a liq. crystal cell, and by combining the cell with a polarizer 9, a display element is obtd. The substance 7 is oriented vertically to the substrates 1 in a state where no electric field is applied, it is oriented parallel to the substrates 1 when an electric field is applied, and the element has a region where the angle between the orienting direction and the polarizing axis of the polarizer 9 is continuously changed from 0 deg. to 90 deg. in a plane parallel to the polarizer 9.

Inventors

• 👤 Toshihiko Ueno
• 👤 上野　敏彦

Bibliographic Details