Active-matrix bistable display device

An active-matrix bistable display device comprising:

• a bistable display panel having n pieces (n is an integer being two or more) of scanning lines extending in a row direction, n pieces of parity line groups each comprising X pieces (X is an integer being two or more) of parity lines extending in a row direction, corresponding to each of the n pieces of said scanning lines, M pieces (M is an integer being two or more) of signal lines extending in a column direction wherein a pixel electrode is formed at each intersection between of each of the M pieces of said signal lines and each of nX pieces (nx is an integer being four or more) of combinations of the n pieces of said scanning lines and the X pieces of the parity lines belonging to the corresponding parity line group and wherein a displaying state that changes by pixel electrode according to a voltage of said pixel to be applied to a facing electrode occurs;
• a signal-line driving unit in which the M pieces of signal lines are sequentially divided into M/X pieces (M/X is an integer being two or more) of signal line groups each comprising X pieces of said signal lines and said signal line groups are connected to M/X pieces of terminals in a one-to-one relationship and image inputs corresponding to the M pieces of signal lines are sequentially divided into M/X pieces of image input groups each comprising X pieces of image inputs and X pieces of image signals making up each image input group are supplied sequentially to the M/X pieces of said terminals in a time-division manner;
• a scanning-line driving unit to sequentially drive the n pieces of said scanning lines;
• and
• a parity-line driving unit to sequentially drive the X pieces of said parity lines;
• wherein each of switching elements connected between each of said signal lines and each of the corresponding pixel electrodes is made active in response to driving of each of the said scanning lines and any one parity line belonging to the corresponding parity line group so as to supply an image voltage fed from each signal line to each of said pixel electrodes so that bistable display by pixel in said display panel is performed according to a polarity of said image voltage.

An active-matrix bistable display device comprising:

• a bistable display panel in which a pixel electrode is formed at each intersection of each of N pieces (N is an integer being two or more) of scanning lines extending in a row direction and each of M pieces (M is an integer being two or more) of signal lines extending in a column direction and a display state that changes by pixel electrode is made to occur depending on a voltage of each of the pixel electrodes applied to a facing electrode;
• a signal-line driving means in which the M pieces of said signal lines are sequentially divided into M/X pieces (M/X is an integer being two or more) of signal line groups each comprising X pieces (X is an integer being two or more) of said signal lines and signal line groups are connected to M/X pieces of terminals in a one-to-one relationship and image inputs corresponding to the M pieces of signal lines are sequentially divided into M/X pieces of image input groups each comprising X pieces of image inputs and X pieces of image signals making up each image input group are supplied sequentially to the M/X pieces of said terminals in a time-division manner;
• and
• a scanning-line driving means in which the N pieces of said scanning lines are sequentially divided into N/X pieces of scanning lines groups each comprising X pieces of said scanning lines, and the X pieces of the scanning lines are sequentially driven in each said scanning lines groups;
• wherein each of switching elements connected between each of the corresponding signal lines and each of the corresponding pixel electrodes is made active in response to driving of each of the said scanning lines so as to supply an image voltage fed from each signal line to each of the pixel electrodes so that bistable display by pixel in said display panel is performed according to a polarity of said image voltage.