Liquid crystal display device

Abstract

Abstract PURPOSE: To improve the adhesion between insulation film and substrate and improve the transparency and direct current resistance of the display device by providing an insulation film composed of polyimide with amino base silane as its underlying layer ont the electrode forming surface of substrates thereby forming the liquid crystal display device. CONSTITUTION: A methanol solution conataining 1 wt% of amino base silane is coated over the entire electrode froming surface of a substrate 1 which comprises forming electrodes 2 of specified patterns with tin oxide, indium oxide, etc. on its surface and is then baked for about 10 minutes at about 200°C in air, whereby an underlying film 3 is formed. Next, a polyimide resin solution of about 2.5% of resin concentration is coated on the underlying film 3 and is then baked for about 20 minutes at about 320°C in a vacuum or inert gas to form an insulation film 4, after which the surface of the insulation film 4 is rubbed by using a cotton cloth or the like, whereby orientation treatment is applied. Next, the electrode substrates A, B having been formed in the abovementioned manner are bonded and fixed by way of a spacer 5, and liquid crystal 6 is injected and sealed therebetween, whereby the liquid crystal cell is produced. COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Jun Takahashi

Bibliographic Details