Matrix display apparatus, matrix display control apparatus, and matrix display drive apparatus

A drive circuit for a display device having a plurality of row electrodes and column electrodes, the plurality of row electrodes being arranged in groups, said drive circuit comprising:

• a row electrode data generating circuit for generating row selection pattern data;
• a frame memory for providing display data;
• an arithmetic operation circuit for calculating column data in accordance with the row selection pattern data generated by said row electrode data generating circuit and the display data provided by said frame memory, said arithmetic operation circuit comprising:
• memory for storing the display data for at least one group of the plurality of row electrodes, and
• selector for selecting the column data applied to each of the plurality of column electrodes from a plurality of signal voltages in accordance with the display data for at least one group of row electrodes and the row selection pattern data;
• a column electrode driver responsive to said arithmetic operation circuit for generating column data for the plurality of column electrodes;
• and
• a row electrode driver responsive to the row selection pattern data generated by said row electrode data generating circuit for grouping said plurality of row electrodes into a plurality of groups, wherein each of said plurality of groups comprises at least h row electrodes, wherein h is an integer of at least two,
• for sequentially selecting each of said plurality of groups and applying a selection signal substantially simultaneously to said at least h row electrodes in said selected one of said plurality of groups during each of N selection periods per frame, wherein N is an integer of at least two, and
• for sequentially applying a non-selection signal, immediately after applying the selection signal, substantially simultaneously to said at least h row electrodes to each one of said plurality of groups during each of N non-selection periods per frame.

A display apparatus comprising:

• a display having a plurality of row electrodes and column electrodes, the row electrodes being arranged in groups;
• and
• a drive circuit comprising:
• a row electrode data generating circuit for generating row selection pattern data,
• a frame memory which for providing display data,
• an arithmetic operation circuit for calculating column data in accordance with the row selection pattern data generated by said row electrode data generating circuit and the display data provided by said frame memory, said arithmetic operation circuit comprising:
• for storing the display data for at least one group of the plurality of row electrodes, and
• selector for selecting the column data applied to each of the plurality of column electrodes from a plurality of signal voltages in accordance with the display data for at least one group of row electrodes and the row selection pattern data,
• a column electrode driver responsive to said arithmetic operation circuit for generating column data for the plurality of column electrodes;
• and
• a row electrode driver responsive to the row selection pattern data generated by said row electrode generating circuit for grouping said plurality of row electrodes into a plurality of groups, wherein each of said plurality of groups comprises at least h row electrodes, wherein h is an integer of at least two,
• for sequentially selecting each of said plurality of groups and applying a selection signal substantially simultaneously to said at least h row electrodes in said selected one of said plurality of groups during each of N selection periods per frame, wherein N is an integer of at least two,
• for sequentially applying a non-selection signal, immediately after applying the selection signal, substantially simultaneously to said at least h row electrodes to each one of said plurality of groups during each of N non-selection periods per frame.

A driving apparatus for a liquid crystal matrix panel having a liquid crystal matrix having a plurality of row electrodes and plurality of column electrodes, said driving circuit comprising:

• frame memory means for providing display data;
• row electrode generating means for generating row selection pattern data;
• arithmetic means responsive to the row selection pattern data generated by said row electrode generating means and the display data provided by said frame memory means for generating column data, said arithmetic means comprising:
• memory means for storing the display data for at least one group of at least i row electrodes, and
• selection means for generating the converted data to select the column data applied to each of the plurality of column electrodes from a plurality of signal voltages, in accordance with the display data for at least one group of row electrodes and the row selection pattern data;
• row driving means responsive to said row electrode generating means for grouping said plurality of row electrodes into a plurality of groups, wherein each of said plurality of groups comprises at least h row electrodes, wherein h is an integer of at least two,
• for sequentially selecting each of said plurality of groups and applying a selection signal substantially simultaneously to said at least h row electrodes in said selected one of said plurality of groups during each of N selection periods per frame, wherein N is an integer of at least two,
• for sequentially applying a non-selection signal, immediately after applying the selection signal, substantially simultaneously to said at least h row electrodes to each one of said plurality of groups during each of N non-selection periods per frame;
• and
• column driving means responsive to the column data calculated by said arithmetic means for generating column data for said plurality of column electrodes.

A liquid crystal display apparatus comprising:

• a pair of opposing substrates
• a plurality of row electrodes disposed on one of said substrates and a plurality of column electrodes arranged on the other substrate, wherein said plurality of row electrodes are divided into groups of row electrodes;
• a liquid crystal material disposed between said pair of substrates;
• and
• a drive circuit comprising:
• a row electrode data generating circuit for generating row selection pattern data,
• a frame memory for providing display data,
• an arithmetic operation circuit for calculating column data in accordance with the row selection pattern data generated by said row electrode data generating circuit and the display data provided by said frame memory, said arithmetic operation circuit comprising:
• memory for storing the display data for at least one group of the plurality of row electrodes,
• selector for selecting the column data applied to each of the plurality of column electrodes from a plurality of signal voltages in accordance with the display data for at least one group of row electrodes and the selection pattern data,
• a column electrode driver responsive to the column data calculated by said arithmetic operation circuit for generating column data for the plurality of column electrodes, and
• a row electrode driver responsive to the row selection pattern data generated by said row electrode data generating circuit for grouping said plurality of row electrodes into a plurality of groups, wherein each of said plurality of groups comprises at least h row electrodes, wherein h is an integer of at least two,
• for sequentially selecting each of said plurality of groups and applying a selection signal substantially simultaneously to said at least h row electrodes in said selected one of said plurality of groups during each of N selection periods per frame, wherein N is an integer of at least two,
• for sequentially applying a non-selection signal, immediately after applying the selection signal, substantially simultaneously to said at least h row electrodes to each one of said plurality of groups during each of N non-selection periods per frame.

A matrix display apparatus for displaying an image in accordance with display data, said matrix display apparatus comprising:

• a matrix display device comprising a plurality of scanning electrodes and a plurality of signal electrodes arranged in a matrix;
• scanning electrode driver
• for grouping said plurality of scanning electrodes into a plurality of groups, wherein each of said plurality of groups comprises at least h scanning electrodes, wherein h is an integer of at least two,
• for sequentially selecting each of said plurality of groups and applying a selection voltage substantially simultaneously to said at least h scanning electrodes in said selected one of said plurality of groups during each of N selection periods per frame, wherein N is an integer of at least two,
• for sequentially applying a non-selection voltage, immediately after applying the selection voltage, substantially simultaneously to said at least h scanning electrodes to each one of said plurality of groups during each of N non-selection periods per frame;
• and
• signal electrode driver for applying a signal voltage to said plurality of signal electrodes, said second driver means comprising:
• a memory for storing the display data for at least one group of said h scanning electrodes, and
• a selector for selecting the signal voltage applied to each of said plurality of signal electrodes from the plurality of the signal voltages in accordance with the stored display data for at least one group of h scanning electrodes and the level of the selection voltage.

A display driver for driving a matrix display, comprising a plurality of scanning electrodes and a plurality of signal electrodes arranged in a matrix, in accordance with display data, a plurality of groups of scanning electrodes, wherein each of the plurality of groups comprises at least h scanning electrodes, wherein h is an integer of at least two,

• wherein each of said plurality of groups is sequentially selected by applying a selection signal substantially simultaneously to the at least h scanning electrodes in the selected one of the plurality of groups during each of N selection periods per frame, wherein N is an integer of at least two,
• wherein a non-selection signal is sequentially applied immediately after applying the selection signal, substantially simultaneously to the at least h scanning electrodes to each one of the plurality of groups during each of N non-selection periods per frame, said display driver comprising:
• a memory for storing a portion of the display data for at least one group of h scanning electrodes, wherein h being an integer greater than 1;
• a selector for selecting a signal voltage applied to each of the signal electrodes from a plurality of the signal voltages in accordance with said display data for at least one group of h scanning electrodes stored by said memory and the selection pattern data.