Method of testing control matrices for flat-panel displays

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United States of America Patent

PATENT NO 5057775
SERIAL NO

07518453

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Abstract

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An AC signal source (26) in series with a variable DC source (34) drives a gate line of an LCD-display drive matrix (10), and current meters (28, 30, 32) monitor the resultant currents in the drain lines. By comparing the thus-measured transadmittance both with and without enabling values of the DC-source output, one can test the matrix (10) for defects.

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Patent Owner(s)

Patent OwnerAddress
GENRAD INC7 TECHNOLOGY PARK DRIVE WESTFORD MA 01886

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hall, Henry P Concord, MA 6 87

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