JP2005202372A5

JP2005202372A5 -

Info

Publication number: JP2005202372A5
Application number: JP2004356965A
Authority: JP
Filing date: 2004-12-09
Publication date: 2008-01-24
Anticipated expiration: 2024-12-09

Claims

An anode line, a cathode line, a signal line, a scanning line, a pixel, an analog switch, and a reverse voltage application transistor;
The pixel is
A first transistor having a gate electrode connected to the scan line and a first electrode connected to the signal line;
A second transistor having a gate electrode connected to a second electrode of the first transistor and a first electrode connected to the anode line;
A third transistor having a first electrode connected to a second electrode of the second transistor;
A light-emitting element having a first electrode connected to a second electrode of the third transistor and a second electrode connected to the cathode line;
A reverse bias transistor having a gate electrode connected to the anode line, a first electrode connected to the first electrode of the light emitting element, and a second electrode connected to the potential line;
The analog switch is
A fourth transistor having a gate electrode connected to the anode line;
A fifth transistor connected to the cathode line or the first power line, the gate electrode,
The first electrode of the fourth transistor and the first electrode of the fifth transistor are connected to become an input of the analog switch,
The second electrode of the fourth transistor and the second electrode of the fifth transistor are connected to become an output of the analog switch,
The gate electrode of the reverse voltage application transistor is connected to the cathode line or the second power supply line,
A display device, wherein the first electrode is connected to the anode line, and the second electrode is connected to the output of the analog switch and the scanning line.

An anode line, a cathode line, a signal line, a scanning line, a pixel, a clocked inverter, and a reverse voltage application transistor;
The pixel is
A first transistor having a gate electrode connected to the scan line and a first electrode connected to the signal line;
A second transistor having a gate electrode connected to a second electrode of the first transistor and a first electrode connected to the anode line;
A third transistor having a first electrode connected to a second electrode of the second transistor;
A light-emitting element having a first electrode connected to a second electrode of the third transistor and a second electrode connected to the cathode line;
A reverse bias transistor having a gate electrode connected to the anode line, a first electrode connected to the first electrode of the light emitting element, and a second electrode connected to the potential line;
The clocked inverter is
A fourth transistor in which the first electrode is connected to the high-potential power line;
A fifth transistor having a gate electrode connected to the anode line or the first power supply line, and a first electrode connected to the low potential power supply line;
A sixth transistor connected to a second electrode of the fifth transistor;
The gate electrode of the fourth transistor and the gate electrode of the sixth transistor are connected to become an input of the clocked inverter,
The second electrode of the fourth transistor and the second electrode of the sixth transistor are connected to become the output of the clocked inverter,
The gate electrode of the reverse voltage application transistor is connected to the cathode line or the second power supply line,
The display device, wherein the first electrode is connected to the anode line, and the second electrode is connected to the output of the clocked inverter and the scanning line.

An anode line, a cathode line, a signal line, a scanning line, a pixel, an analog switch, a reverse voltage application transistor, and a control circuit;
The pixel is
A first transistor having a gate electrode connected to the scan line and a first electrode connected to the signal line;
A second transistor having a gate electrode connected to a second electrode of the first transistor and a first electrode connected to the anode line;
A third transistor having a gate electrode connected to a first power supply line and a first electrode connected to a second electrode of the second transistor;
A light-emitting element having a first electrode connected to a second electrode of the third transistor and a second electrode connected to the cathode line;
A reverse bias transistor having a gate electrode connected to the anode line, a first electrode connected to the first electrode of the light emitting element, and a second electrode connected to the potential line;
The analog switch is
A fourth transistor having a gate electrode connected to the anode line;
A fifth transistor having a gate electrode connected to the cathode line or the second power supply line,
The first electrode of the fourth transistor and the first electrode of the fifth transistor are connected to become an input of the analog switch,
The second electrode of the fourth transistor and the second electrode of the fifth transistor are connected to become an output of the analog switch,
The gate electrode of the reverse voltage application transistor is connected to the cathode line or the third power supply line, the first electrode is connected to the anode line, and the second electrode is connected to the output of the analog switch and the scanning line. Connected,
The control circuit includes:
A sixth transistor having a gate electrode connected to the anode line and a first electrode connected to the first power line;
And a seventh transistor having a first electrode connected to the anode line and a second electrode connected to the first power supply line.

An anode line, a cathode line, a signal line, a scanning line, a pixel, a clocked inverter, a reverse voltage application transistor, and a control circuit;
The pixel is
A first transistor having a gate electrode connected to the scan line and a first electrode connected to the signal line;
A second transistor having a gate electrode connected to a second electrode of the first transistor and a first electrode connected to the anode line;
A third transistor having a gate electrode connected to a first power supply line and a first electrode connected to a second electrode of the second transistor;
A light-emitting element having a first electrode connected to a second electrode of the third transistor and a second electrode connected to the cathode line;
A reverse bias transistor having a gate electrode connected to the anode line, a first electrode connected to the first electrode of the light emitting element, and a second electrode connected to the potential line;
The clocked inverter is
A fourth transistor in which the first electrode is connected to the high-potential power line;
A fifth transistor having a gate electrode connected to the anode line or the second power supply line, and a first electrode connected to the low potential power supply line;
A sixth transistor connected to a second electrode of the fifth transistor;
The gate electrode of the fourth transistor and the gate electrode of the sixth transistor are connected to become an input of the clocked inverter,
The second electrode of the fourth transistor and the second electrode of the sixth transistor are connected to become the output of the clocked inverter,
The gate electrode of the reverse voltage application transistor is connected to the cathode line or the third power supply line, the first electrode is connected to the anode line, and the second electrode is the output of the clocked inverter and the scanning line. Connected to
The control circuit includes:
A seventh transistor having a gate electrode connected to the anode line and a first electrode connected to the first power line;
A display device comprising: an eighth transistor having a first electrode connected to the anode line and a second electrode connected to the first power supply line.

4. The display device according to claim 3, wherein the second power supply line and the third power supply line are kept at the same potential.

In any one of Claims 1, 3, and 5,
A display device, wherein the anode line and the cathode line are inverted to apply a reverse voltage to the light emitting element, simultaneously the analog switch is turned off, and the reverse voltage application transistor is turned on. .

The display device according to claim 1, wherein the fourth transistor and the fifth transistor have different polarities.

3. The display device according to claim 1, wherein a gate electrode of the third transistor is connected to the potential line.

5. The reverse voltage application transistor according to claim 2, wherein the potential of the anode line and the cathode line is inverted to apply a reverse voltage to the light emitting element, and at the same time, the clocked inverter is set to a high impedance state, and the reverse voltage application transistor is turned on. A display device characterized by that.

10. The display device according to claim 1, wherein the first transistor is operated in a linear region.

The display device according to claim 1, wherein the second transistor is operated in a linear region.

12. The display device according to claim 1, wherein the third transistor is operated in a linear region or a saturation region.

In any one of Claims 1 thru | or 12,
The pixel is
A display device comprising: an erasing transistor having a first electrode connected to a gate electrode of the second transistor and a second electrode connected to the anode line.

14. The display device according to claim 13, wherein the erasing transistor is operated in a linear region.