JPS54158948A - Liquid crystal display device - Google Patents

Abstract

PURPOSE: To improve the time response characteristics of phase transition effect and White and Taylor type guest-host effect, transmittance voltage characteristics, stability in production, lifetime, etc. by forming a vertical orientation treatment layer with inorganic material.

CONSTITUTION: On a substrate 1 provided with electrodes 3 is vacuum evaporated an inorganic material layer 5' playing also as a role of an insulation and protection film for the electrodes 3 and a protection film for the substrate 3 against alkali ions and impurities, at, e.g., vapor deposition angle 0°. The orientation direction 18 of 7-B near the substrate 1 of the liquid crystal layer 7 having chirality is determined in the direction where the angle Ψ from the substrate normal 17 is within 45°. The orientation determining ability of the liquid crystal by the layer 5' is determined by the shape effect owing to the undulation structure of the layer 5' surface and the physical chemical interaction, etc. of the polarization action, etc. between the inorganic material and the liquid crystal and these depend upon the kinds of the inorganic materials and layer forming conditions.

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