Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-04-25
2006-04-25
Dudek, James A. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S111000
Reexamination Certificate
active
07034910
ABSTRACT:
A liquid crystal display device with a negative display when no current is supplied. The device includes a liquid crystal layer that is built into an active zone between substrates, the exterior of each of the substrates is covered by pole filters that are aligned in an arrangement for the currentless negative display. The interior of the substrates has segments of surface electrodes that are separated from one another by electrically insulating dividing lines, the segments being connected to connection lines that lead to the exterior. Masking is provided on the interior of the substrate for areas that would otherwise remain bright during retrace blanking. This invention provides an advantageous construction and display quality, because the periphery of the active zone is encompassed by adhesive strips, which appear black, between the substrates, and because the masking, at least in bright areas that would otherwise be visible from a conventional viewing distance during retrace blanking, is produced by additional adhesive strips.
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Dudek James A.
Element Displays Dr. Wiemer GmbH
Pauley Petersen & Erickson
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