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US Patent 7892456 Composition for use in making a light-blocking layer

Patent 7892456 was granted and assigned to Cheil Industries on February, 2011 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee
Cheil Industries
Cheil Industries
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7892456
Date of Patent
February 22, 2011
Patent Application Number
12292599
Date Filed
November 21, 2008
Patent Primary Examiner
‌
Mark Kopec
Patent abstract

Disclosed is a non-photosensitive black electrode composition and a plasma display panel having a black electrode formed using the composition. The black electrode for the plasma display panel includes the non-photosensitive composition, thus yellowing does not occur on electrodes but conductivity to a transparent electrode layer is desirably assured even though typical conductive powder and various types of black pigments are used. It is possible to conduct patterning using a photolithography process due to the simultaneous development of black and bus electrodes, which can act as electrodes due to simultaneous sintering. Since it is non-photosensitive, it is possible to use various types of black pigments, thus the material cost is reduced.

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