Liquid crystal electro-optical device and manufacturing method f

Details Liquid crystal electro-optical device and manufacturing method f Liquid crystal electro-optical device and manufacturing method f

1992-09-24

1994-05-03

Wojciechowicz, Edward

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 75, G02F 113

Patent

active

053092635

ABSTRACT:
A liquid crystal electro-optical device having gettering means therein and a method for manufacturing such a liquid crystal electro-optical device are disclosed. For example, in a liquid crystal panel disposed in the device, polyvinyl carbazole film is formed as the getting means on at least one of a pair of substrates, and the film has a function to absorb ionized impurities existing in liquid crystal disposed in the device. In virtue of the film, ionized impurities in the liquid crystal layer are decreased, and by heating the liquid crystal panel, the function of the polyvinyl carbazole film, i.e. the function to absorb ionized impurities, is enhanced. Consequently, a liquid crystal electro-optical device free from after-image which was a problem in conventional liquid crystal display devices can be obtained.

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