Display device and method for visualizing computer generated image information

A telephone having a display for digital/analog visualization of computer stored and bitmapped still or moving images on or via at least one visualization medium, the display comprising:

• a matrix comprising at least two sets of individually addressable electrodes, the electrodes being arranged in rows and columns with overlapping regions defined by the overlapping parts of a row and a column;
• a set of at least two resistive spacers positioned in the overlapping regions and electrically connecting the sets of electrodes;
• at least one control unit electrically coupled to said electrodes for applying, multiplexing, scanning or pulsating first and second control signals to the set of at least two resistive spacers via said electrodes to obtain a temperature variation in the overlapping regions;
• and
• a thermosensitive material covering the electrodes and transforming the temperature variation to a visible dot,
• wherein:
• the control unit applies the first control signals comprising a plurality of low voltage and short duration pulses of electric current until the desired temperature is reached;
• and
• the control unit intermittently applies the second control signals to the electrodes with an amount of energy per time unit to maintain the desired temperature, so that the visible dot remains until a next update of the display, wherein the second control signals are spaced apart further in time compared to the first control signals.

A display for digital/analog visualization of computer stored and bitmapped still or moving images on or via at least one visualization medium, the display comprising:

• a matrix comprising at least two sets of individually addressable electrodes, the electrodes being arranged in rows and columns with overlapping regions defined by the overlapping parts of a row and a column;
• one or more resistive spacers positioned in the overlapping regions to separate the sets of electrodes and to electrically connect one or more sets of electrodes, wherein at least one set of electrodes is embedded in the resistive spacers;
• at least one control unit electrically coupled to said electrodes for applying, multiplexing, scanning or pulsating first and second control signals to the one or more resistive spacers via said electrodes to obtain a temperature variation in the overlapping regions;
• and
• a thermosensitive material covering the electrodes and transforming the temperature variation to a visible dot,
• wherein:
• the control unit applies the first control signals comprising a plurality of low voltage and short duration pulses of electric current until the desired temperature is reached;
• and
• the control unit intermittently applies the second control signals to the electrodes with an amount of energy per time unit to maintain the desired temperature, so that the visible dot remains until a next update of the display, wherein the second control signals are spaced apart further in time compared to the first control signals.

A display for digital/analog visualization of computer stored and bitmapped still or moving images on or via at least one visualization medium, the display comprising:

• a matrix comprising at least two sets of individually addressable electrodes, the electrodes being arranged in rows and columns with overlapping regions defined by the overlapping parts of a row and a column;
• one or more resistive spacers positioned in the overlapping regions to separate the sets of electrodes and to electrically connect the sets of electrodes;
• at least one control unit electrically coupled to said electrodes for applying, multiplexing, scanning or pulsating first and second control signals to the one or more resistive spacers via said electrodes to obtain a temperature variation in the overlapping regions;
• a thermally conductive material covering the electrodes and the one or more resistive spacers;
• and
• a thermosensitive material covering the thermally conductive material and transforming the temperature variation to a visible dot,
• wherein:
• the control unit applies the first control signals comprising a plurality of low voltage and short duration pulses of electric current until the desired temperature is reached;
• and
• the control unit intermittently applies the second control signals to the electrodes with an amount of energy per time unit to maintain the desired temperature, so that the visible dot remains until a next update of the display, wherein the second control signals are spaced apart further in time compared to the first control signals.

A display for digital/analog visualization of computer stored and bitmapped still or moving images on or via at least one visualization medium, the display comprising:

• a matrix comprising at least two sets of individually addressable electrodes, the electrodes being arranged in rows and columns with overlapping regions defined by the overlapping parts of a row and a column, wherein at least one set of electrodes has an annulus shape in the overlapping regions;
• a set of at least two resistive spacers positioned in the overlapping regions and electrically connecting the sets of electrodes;
• at least one control unit electrically coupled to said electrodes for applying, multiplexing, scanning or pulsating first and second control signals to the set of at least two resistive spacers via said electrodes to obtain a temperature variation in the overlapping regions;
• and
• a thermosensitive material covering the electrodes and transforming the temperature variation to a visible dot,
• wherein:
• the control unit applies the first control signals comprising a plurality of low voltage and short duration pulses of electric current until the desired temperature is reached;
• and
• the control unit intermittently applies the second control signals to the electrodes with an amount of energy per time unit to maintain the desired temperature, so that the visible dot remains until a next update of the display, wherein the second control signals are spaced apart further in time compared to the first control signals.