Information display system, display device, display device drive method and display apparatus

A display device, in the display device having two substrates, between which a liquid crystal is injected, comprises

• partition walls with a structure for keeping plural colors of liquid crystals, which are injected between the two substrates, from touching one another.

A display apparatus, comprising:

• a first display device having a transmission and a reflection mode, and capable of switching display contents, and
• a reflective second display device for displaying a fixed image or character and enabling a viewing of display content through the first display device.

A display apparatus, in the display apparatus using a liquid crystal display comprising

• a temperature compensation unit for changing, in response to temperature, two kinds of peak values of drive voltage wave forms corresponding to two stable states of the liquid crystal.

A display apparatus, in the display apparatus having a coil furnished in order to receive an external high frequency magnetic field, comprising:

• a display-use power supply unit for supplying a display-use voltage by rectifying a high frequency voltage induced by the coil, and
• a logic-use power supply unit for supplying circuits other than the one for display use with a voltage by rectifying a high frequency voltage induced by the coil.

A display apparatus, in the display apparatus comprising a display unit for performing a data display by using power supplied externally by noncontact means, comprising

• a display function control unit for controlling a display function of the display unit in response to supplied electric power externally.

A display apparatus, in the display apparatus comprising a display-use power supply which uses a part of power supplied externally by noncontact means, and a logic-use power supply for supplying circuits other than the one for display use with power by using a part of the power, comprising

• a current regulation unit for regulating an output current of the display-use power supply in response to a voltage drop of the logic-use power supply.

A display device drive method for use in a matrix type display apparatus using a liquid crystal which forms a cholesteric phase, comprising the steps of

• setting some of scanning electrodes for a reset and writing lines to a selection state and a pause line to a non-selection state, respectively;
• and
• providing a writing data signal to a signal electrode side while shifting the reset, pause and writing lines, respectively.

A display device drive method for use in a matrix type display apparatus using a liquid crystal which forms a cholesteric phase, comprising the steps of

• detecting a plurality of lines, in which data patterns to be displayed are the same, from among a plurality of lines on a display screen of the display apparatus;
• and
• writing the same pattern data in bulk by selecting the detected plurality of lines simultaneously and providing data of the same pattern to signal electrodes.