Driving method of a display device employing electro-light-emitting elements and the same display device

A method of driving a display device, said method comprising the steps of:

• (a) providing the display device, wherein said display device includes a plurality of light-emitting elements which include cathodes including a plurality of stripe lines, anodes across the cathodes and having a plurality of strip lines, and a light-emitting layer between the cathodes and the anodes;
• (b) detecting light in an environment where the display device is used;
• and
• (c) controlling electric current running through the light-emitting layer responsive to the light detected.

A method of driving a display device, said method comprising the steps of:

• (a) providing the display device, wherein said display device includes a plurality of
• cathodes,
• anodes facing the cathodes,
• and a plurality of emitting elements having an organic emitting layer disposed between the cathodes and the anodes;
• (b) applying a direct current to the organic emitting layer;
• (c) setting a luminance level responsive to a time signal sent from a clock;
• and
• (d) controlling a current running through the emitting layer responsive to the luminance level.

A display device comprising:

• (a) a plurality of light-emitting elements including:
• cathodes comprising a plurality of stripe lines;
• anodes across said cathodes and comprising a plurality of stripe lines;
• and
• a light-emitting layer provided between said cathodes and said anodes,
• (b) an anode controller including:
• electric current sources;
• a first point having a given potential;
• and
• a plurality of first switches for opening and closing between said anodes and one of said electric current sources and said first point;
• and
• (c) a cathode controller including:
• a voltage source;
• a second point having a given potential;
• and
• a plurality of second switches for opening and closing between said cathodes and one of said voltage source and said second point,
• wherein said cathode controller applies a voltage to said cathodes sequentially as well as said anode controller supplies electric current to desirable said anodes for illuminating said light-emitting elements at intersections of said cathodes receiving a voltage and said desirable anodes,
• wherein said display device illuminates a first light-emitting element coupled to a first cathode by running electric current through said first element, and for illuminating a second light-emitting element coupled to a second cathode, said first and said second switches—both coupled to the second element—are closed to said first and said second points respectively, and at the same time, anodes coupled to said light-emitting elements other than the second element are opened to both of said current sources and said first point, before electric current runs into said second element.

A display device comprising:

• (a) a plurality of light-emitting elements including:
• cathodes comprising a plurality of stripe lines;
• anodes across said cathodes and comprising a plurality of stripe lines;
• and
• a light-emitting layer provided between said cathodes and said anodes,
• (b) an anode controller including:
• electric current sources;
• a first point having a given potential;
• and
• a plurality of first switches for opening and closing between said anodes and one of said electric current sources and said first point;
• (c) a cathode controller including:
• a voltage source;
• a second point having a given potential;
• and
• a plurality of second switches for opening and closing between said cathodes and one of said voltage source and said second point,
• (d) a brightness setter for determining a brightness level of said light-emitting elements based on external information;
• and
• (e) a controller for controlling electric current running through said light-emitting elements based on the determined brightness level,
• wherein said cathode controller applies a voltage to said cathodes sequentially as well as said anode controller supplies electric current to desirable said anodes for illuminating said light-emitting elements at intersections of said cathodes receiving a voltage and said desirable anodes, and
• wherein, based on the determined brightness level, said controller controls said anode controller for adjusting electric current running through said light-emitting elements.

A display device comprising:

• (a) a plurality of emitting elements including:
• (a-1) a plurality of cathodes;
• (a-2) anodes facing said cathodes;
• (a-3) an emitting layer disposed between said cathodes and said anodes;
• (b) a current source for supplying an electric current to selected members of said emitting elements;
• (c) a luminance setter for setting a luminance level of said emitting elements based on external information;
• and
• (d) a controller for controlling a current running through said emitting elements.