Addressing method and system having minimal crosstalk effects

A method of improving image quality in an rms-responding passive display that includes an array of pixels defined by the overlapping areas of first and second electrodes, each pixel having an optical state controlled by addressing signals having frequency components, the display having an optical response to the frequency components of the addressing signals, the optical response characterized by a relatively constant optical response frequency band and a relatively non-constant optical response frequency band, the method comprising:

• determining addressing signal waveforms that select each pixel multiple times during a frame period and that provide the pixels with the desired optical state by providing a predetermined rms voltage related to the optical response of the pixels in the relatively constant optical response frequency band, the addressing signals being adjusted in magnitude to de-emphasize the effect of frequency components that fall outside of the constant optical response frequency band;
• and
• applying the addressing signals to the first and second electrodes.

An apparatus for addressing a high information content, rms-responding passive display including an array of pixels, each pixel having an optical state controlled by a pixel voltage and being addressed by addressing signals having frequency components, the display having an optical response dependent on the frequency components of the addressing signals, the apparatus comprising:

• an addressing signal generator subunit that provides addressing signals that select pixels more than once in a frame period to produce a predetermined rms value across the pixels during a frame period;
• and
• a signal adjuster that adjusts the magnitude of the addressing signals to compensate for the frequency dependence of the optical response of the display and thereby produce the desired optical response.