Device for improving the contrast of a liquid crystal screen and its method of manufacture through the use of opaque bands
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United States of America Patent
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Nov 19, 1996
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N/A
app pub date -
Aug 29, 1994
filing date -
Oct 11, 1991
priority date (Note) -
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Abstract
A device for improving a contrast of a liquid crystal screen by using an opaque mask. The display screen includes a first plate, on one face of which are deposited elements with controlled transparence or reflectance and thin film components controlling these elements, and a back plate covering a face of the first plate including the elements with controlled transparence or reflectance and the thin film components. The elements are separated by opaque bands into lines and columns forming a grid. The opaque bands are deposited at least partially on the plate including the elements and the thin film components.
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