Light-emitting display device and driving method therefor

A light-emitting display device in which light-emitting elements are connected to intersections of positive electrode lines and negative electrode lines arranged in a matrix, either one of the positive electrode lines or the negative electrode lines are employed as scan lines with the other employed as drive lines;

• a scan period during which, while scanning the scan lines, drive sources are connected to desired drive lines in synchronization with the scanning of the scan lines, thus the light-emitting elements connected to the intersections of the scan lines and drive lines are lit, and a reset period for providing a reset voltage to light-emitting elements are alternately repeated for display by light emission, said light-emitting display device comprising:
• scan switch means for enabling either of grounding means for providing a ground potential or a reverse bias voltage source for providing a predetermined reverse bias voltage to connect to each of said scan lines;
• drive switch means for enabling either of said drive source to said each drive lines or reset voltage sources for providing said reset voltage to connect to each of said drive lines;
• and
• control means for controlling the switching of said scan switch means and said drive switch means to apply a reset voltage to all of said light-emitting elements in a forward direction during said reset period,
• wherein the voltage of said reverse bias voltage source is set to be substantially the same as a light emission specifying voltage of said light-emitting elements.

A display apparatus, comprising:

• a plurality of light-emitting devices respectively connected between a plurality of scan lines and a plurality of drive lines;
• a scan circuit which selectively connects said scan lines to a first voltage and a second voltage, wherein a value of said first voltage is different than a value of said second voltage;
• a driving circuit which selectively connects said drive lines to a third voltage and a drive source, wherein a value of said third voltage is different than each of said values of said first voltage and said second voltage;
• and
• control means for controlling said scan circuit and said driving circuit to apply a reset voltage to all of said light-emitting devices in a forward direction during a reset period,
• wherein, during a scan period, a particular light-emitting device is illuminated by connecting a particular scan line connected to said particular light-emitting device to said second voltage and by connecting a particular drive line connected to said particular light-emitting device to said drive source, and
• wherein said value of said first voltage substantially equals a difference between said value of said third voltage and a light emission specifying voltage value of said light-emitting devices.

A display apparatus, comprising:

• a plurality of light-emitting devices respectively connected between a plurality of scan lines and a plurality of drive lines;
• a scan circuit which selectively connects said scan lines to a first voltage and a second voltage, wherein a value of said first voltage is different than a value of said second voltage;
• a driving circuit which selectively connects said drive lines to a third voltage and a drive source, wherein a value of said third voltage is different than each of said values of said first voltage and said second voltage;
• and
• control means for controlling said scan circuit and said driving circuit to apply a reset voltage to all of said light-emitting devices in a forward direction during a reset period,
• wherein, during a scan period, a particular light-emitting device is illuminated by connecting a particular scan line connected to said particular light-emitting device to said second voltage and by connecting a particular drive line connected to said particular light-emitting device to said drive source,
• wherein said value of said first voltage substantially equals a light emission threshold voltage value of said light-emitting devices.

A display apparatus, comprising:

• a plurality of light-emitting devices respectively connected between a plurality of scan lines and a plurality of drive lines;
• a scan circuit which selectively connects said scan lines to a reverse bias voltage and a ground potential, wherein a value of said reverse bias voltage is different than a value of said ground potential;
• a driving circuit which selectively connects said drive lines to a reset voltage and a drive source, wherein a value of said reset voltage is different than each of said values of said reverse bias voltage and said ground potential;
• and
• control means for controlling said scan circuit and said driving circuit to apply a reset voltage to all of said light-emitting devices in a forward direction during a reset period,
• wherein, during a scan period, a particular light-emitting device is illuminated by connecting a particular scan line connected to said particular light-emitting device to said ground potential and by connecting a particular drive line connected to said particular light-emitting device to said drive source, and
• wherein said value of said reverse bias voltage substantially equals a difference between said value of said reset voltage and a light emission specifying voltage value of said light-emitting devices.

A display apparatus, comprising:

• a plurality of light-emitting devices respectively connected between a plurality of scan lines and a plurality of drive lines;
• a scan circuit which selectively connects said scan lines to a reverse bias voltage and a ground potential, wherein a value of said reverse bias voltage is different than a value of said ground potential;
• a driving circuit which selectively connects said drive lines to a reset voltage and a drive source, wherein a value of said reset voltage is different than each of said values of said reverse bias voltage and said ground potential;
• and
• control means for controlling said scan circuit and said driving circuit to apply a reset voltage to all of said light-emitting devices in a forward direction during a reset period,
• wherein, during a scan period, a particular light-emitting device is illuminated by connecting a particular scan line connected to said particular light-emitting device to said ground potential and by connecting a particular drive line connected to said particular light-emitting device to said drive source,
• wherein said value of said reverse bias voltage substantially equals a light emission specifying voltage value of said light-emitting devices.