| Title of Invention | A LIQUID CRYSTAL DISPLAY DEVICE |
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| Abstract | The present invention relates to the removal of ion (42, 44, 902) contaminations from liquid crystal layers (901) in liquid crystal display devices (900). The ions (42, 44, 902) are removed by means of so called ion pumping, which utilizes the anisotropic viscosity of liquid crystals. The ions (42, 44, 902) 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 (41) in the liquid crystal. The viscosity in the liquid crystal is related to the director directions, and the ions (42, 44, 902) are thereby moved in non-closed trajectories (43, 45). The inventive ion pumping can be further improved using an asymmetric or biased alternating electric field. |
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1036-chenp-2006 complete specification as granted.pdf
1036-chenp-2006 correspondence others.pdf
1036-chenp-2006.tif correspondance others.pdf
1036-chenp-2006.tif form-1.pdf
| Patent Number | 238348 | ||||||||||||
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| Indian Patent Application Number | 1036/CHENP/2006 | ||||||||||||
| PG Journal Number | 6/2010 | ||||||||||||
| Publication Date | 05-Feb-2010 | ||||||||||||
| Grant Date | 29-Jan-2010 | ||||||||||||
| Date of Filing | 27-Mar-2006 | ||||||||||||
| Name of Patentee | CHI MEI OPTOELECTRONICS CORP. | ||||||||||||
| Applicant Address | Groenewoudseweg 1, NL-5621 BA Eindhoven | ||||||||||||
Inventors:
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| PCT International Classification Number | G02F 1/1333 | ||||||||||||
| PCT International Application Number | PCT/IB2004/051469 | ||||||||||||
| PCT International Filing date | 2004-08-17 | ||||||||||||
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