Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2011-04-05
2011-04-05
Dudek, James A (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S130000
Reexamination Certificate
active
07920233
ABSTRACT:
The invention relates to a transflective vertically aligned (VA) liquid crystal display (LCD) comprising a patterned quarter wave foil (QWF). The display (10) comprises, in a particular, front and back electrodes (14a, 14b, 14c) provided on transparent substrates (11a, 11b) and sandwiching a LC medium (12), so as to define reflective (10a) and transmissive sub-pixels (10b). The patterned QWF (16), which is preferably provided inside the LC cell (in-cell application), has regions (16a) which provide a defined retardation and cover the reflective sub-pixels (10a), and regions (16b) having no on-axis retardation and covering the transmissive sub-pixels (10a).
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Hamilton Rick
Harding Richard
Dudek James A
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
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