LCD columnar spacers made of a hydrophilic resin and LCD orienta

Details LCD columnar spacers made of a hydrophilic resin and LCD orienta LCD columnar spacers made of a hydrophilic resin and LCD orienta

1995-06-07

1997-10-21

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349130, 349132, 349155, G02F 11337, G02F 11339

Patent

active

056801890

ABSTRACT:
A liquid crystal display using a hydrophobic material as the material of resinous columns to orient the molecules of the liquid crystal parallel to the substrates. A hydrophilic material can also be used as the material of resinous columns to orient the molecules of the liquid crystal vertical to the substrates. The liquid crystal molecules are oriented horizontally by making the surface tension of the orientation film greater than the surface tension of the resinous columns. The liquid crystal molecules are oriented vertically by making the surface tension of the orientation film smaller than the surface tension of the resinous columns. A mixture of a liquid crystal material and an uncured resin is placed in a liquid crystal cell. The uncured resin is precipitated (deposited) out of the mixture. The molecules of the liquid crystal material are oriented. Then, the uncured resin is cured. Thereafter, an aging step for reorienting the molecules of the liquid crystal material is carried out. This prevents disturbance of the orientation around the resinous columns and leads to an improvement in the voltage holding ratio.

REFERENCES:
patent: 5150231 (1992-09-01), Iwamato et al.
patent: 5321533 (1994-06-01), Kumar
patent: 5473450 (1995-12-01), Yamada et al.
patent: 5490001 (1996-02-01), Konuma

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