Method of addressing a liquid crystal matrix screen and device applying this method
OwnerPatrick Thomasinventor
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Abstract
A method is provided for addressing a bistable nematic liquid crystal matrix screen having two stable states in the absence of an applied electric field. The switching of each pixel from a stable state to another stable state, is controlled by a switching electrical voltage pulse obtained by the application of at least one row-addressing signal applied to a row-addressing electrode and the application of at least one column-addressing signal applied to a column-addressing electrode. The features of the row-addressing signals and/or the features of the column-addressing signals are a function of the position of the pixel in the matrix screen.
Claims35
A method for addressing a bistable nematic liquid crystal matrix screen having two stable states in the absence of an applied electric field, the screen including two substrates between which the liquid crystal is disposed, the first substrate comprising row-addressing electrodes and the second substrate comprising column-addressing electrodes, said addressing electrodes being presented in the form of electrically conductive bands, comprising:
- the switching of each pixel from a stable state to another stable state, being controlled by a switching electrical voltage pulse obtained by the application of at least one row-addressing signal applied to a first end of a row-addressing electrode and the application of at least one column-addressing signal applied to a first end of a column-addressing electrode, the features of the row-addressing signals and/or the features of the column-addressing signals for the switching of a pixel of the matrix screen are a function of the position of said pixel in said matrix screen.
Dependencies are inferred from the claim text.