Eliminating crosstalk in thin-film transistor/liquid-crystal displays

Liquid-crystal displays addressed by thin-film transistors are subject to crosstalk associated with parasitic capacitances. An addressing technique that provides compensation for crosstalk, eliminating its visible effects, is described. Each row-addressing time interval is subdivided into two interv...

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Bibliographic Details
Published in:IEEE transactions on electron devices 1989-09, Vol.36 (9), p.1938-1942
Main Authors: Howard, W.E., Alt, P.M., Wisnieff, R.L.
Format: Article
Language:English
Subjects:
Active matrix addressing
Active matrix liquid crystal displays
Cathode ray tubes
Circuits
Crosstalk
Electrodes
Liquid crystal displays
Liquid crystals
Thin film transistors
Voltage
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Description
Summary:Liquid-crystal displays addressed by thin-film transistors are subject to crosstalk associated with parasitic capacitances. An addressing technique that provides compensation for crosstalk, eliminating its visible effects, is described. Each row-addressing time interval is subdivided into two intervals, one of which is used for normal data transfer into the row. During the other subinterval, all gates are inactive, and a compensation voltage that is complementary to the data voltage for the row being addressed is applied to each column. This technique does, however, require a factor-of-two increase in bandwidth or switching speeds.< >
ISSN:0018-9383
1557-9646
DOI:10.1109/16.34274