Chimei Innolux Corporation

Chi Mei Optoelectronics Corporation

Goran Stojmenovik

Alwin Rogier Martijn Verschueren

Kristiaan Neyts

The present invention relates to the removal of ion contaminations from liquid crystal layers in liquid crystal display devices. The ions are removed by means of so called ion pumping, which utilizes the anisotropic viscosity of liquid crystals. The ions are pumped up and down in the liquid crystal layer by means of an alternating electric filed. The alternating electric field simultaneously alters the alignment of directors in the liquid crystal. The viscosity in the liquid crystal is related to the director directions, and the ions are thereby moved in non-closed trajectories. The inventive ion pumping can be further improved using an asymmetric or biased alternating electric field.

Lateral ion pumping in liquid crystal displays

The present invention relates to the removal of ion () contaminations from liquid crystal layers () in liquid crystal display devices (). The ions () are removed by means of so called ion pumping, which utilizes the anisotropic viscosity of liquid crystals. The ions () are pumped up and down in the liquid crystal layer by means of an alternating electric filed. The alternating electric field simultaneously alters the alignment of directors () in the liquid crystal. The viscosity in the liquid crystal is related to the director directions, and the ions () are thereby moved in non-closed trajectories (). The inventive ion pumping can be further improved using an asymmetric or biased alternating electric field.

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Ghent, Belgium

Goran Stojmenovik