Stereoscopic image display device and method for driving the same
A stereoscopic image display device includes a display panel, a scan driver, and a data driver. The display panel includes pixels coupled to data lines and scan lines. The pixels do not emit light during a data pre-addressing period and pixels emit light during a data addressing period. The scan driver supplies scan signals to the scan lines. The data driver supplies data voltages to the data lines in synchronization with the scan signals. The scan driver supplies first scan signals to the scan lines during the data pre-addressing period, and supplies second scan signals to the scan lines during the data addressing period. Each of the first scan signals has one pulse, and each of the second scan signals has a plurality of pulses.
1. A stereoscopic image display device, comprising:
a display panel including a plurality of pixels coupled to data lines and scan lines, wherein the pixels are not to emit light during a data pre-addressing period and the pixels are to emit light during a data addressing period;
a scan driver to supply scan signals to the scan lines; and
a data driver to supply data voltages to the data lines in synchronization with the scan signals, wherein the scan driver is to supply first scan signals of the scan signals to the scan lines during the data pre-addressing period, and is to supply second scan signals of the scan signals to the scan lines during the data addressing period, and wherein each of the first scan signals has one pulse and each of the second scan signals has a plurality of pulses, wherein the scan driver is to supply pulses of the first scan signals to the scan lines according to a non-sequential order during the data pre-addressing period, wherein at least one pixel of the plurality of pixels includes:
a driving transistor to turn on or off according to a voltage supplied to a gate electrode of the driving transistor;
a scan transistor to turn on to supply a data voltage to the gate electrode of the driving transistor in response to scan pulses of the scan signals;
an organic light emitting diode to emit light when the driving transistor is turned on; and
a first capacitor coupled between the gate electrode of the driving transistor and a first power voltage line to which a first power voltage is supplied, and wherein:
a second power voltage is to be supplied to a second power voltage line coupled to a cathode of the organic light emitting diode,
the second power voltage has a first level voltage during the data pre-addressing period and a second level voltage lower than the first level voltage, during the data addressing period.
2. The display device as claimed in claim 1 , wherein data voltages to be supplied to the plurality of pixels during the data pre-addressing period are same values as data voltages to be lastly supplied to the plurality of pixels during the data addressing period.
3. The display device as claimed in claim 1 , wherein the scan driver is to supply pulses of the second scan signals to the scan lines according to a non-sequential order during the data addressing period.
4. The display device as claimed in claim 1 , wherein:
the driving transistor is to turn on when a first data voltage is supplied to the gate electrode of the driving transistor, and
the driving transistor is to turn off when a second data voltage, lower than the first data voltage, is supplied to the gate electrode of the driving transistor.
5. The display device as claimed in claim 1 , wherein:
the display panel includes emission lines parallel to scan lines,
the at least one pixel includes an emission transistor to turn on to connect the gate electrode of the driving transistor with the scan transistor in response to one or more emission signals supplied to the emission lines.
6. The display device as claimed in claim 5 , wherein:
the emission signal is to be supplied as a gate on voltage during a first period of the data pre-addressing period and the data addressing period and to be supplied a gate off voltage during a second period of the data pre-addressing period,
the emission transistor is to be turned on when the emission signal having the gate on voltage is supplied and turned off when the emission signal having the gate off voltage is supplied.
7. The display device as claimed in claim 1 , wherein:
the display panel includes emission lines parallel to scan lines,
the at least one pixel includes an emission transistor to turn on to connect the driving transistor with the organic light emitting diode in response to one or more emission signals supplied to the emission lines.
8. The display device as claimed in claim 7 , wherein:
the emission signal is to be supplied as a gate on voltage during the data addressing period and a gate off voltage during the data pre-addressing period, and
the emission transistor is to be turned on when the emission signal having the gate on voltage is supplied and turned off when the emission signal having the gate off voltage is supplied.
9. A stereoscopic image display device, comprising:
a display panel including a plurality of pixels coupled to data lines and scan lines, wherein the pixels are not to emit light during a data pre-addressing period and the pixels are to emit light during a data addressing period;
a scan driver to supply scan signals to the scan lines; and
a data driver to supply data voltages to the data lines in synchronization with the scan signals, wherein the scan driver is to supply first scan signals of the scan signals to the scan lines during the data pre-addressing period, and is to supply second scan signals of the scan signals to the scan lines during the data addressing period, and wherein each of the first scan signals has one pulse and each of the second scan signals has a plurality of pulses, wherein the scan driver is to supply pulses of the first scan signals to the scan lines according to a sequential order during the data pre-addressing period, wherein at least one pixel of the plurality of pixels includes:
a driving transistor to turn on or turn off according to a voltage supplied to a gate electrode of the driving transistor;
a scan transistor to turn on to supply a data voltage to the gate electrode of the driving transistor in response to the scan signals;
an organic light emitting diode to emit light in accordance with the drain-source current of the driving transistor; and
a storage capacitor coupled between the gate electrode of the driving transistor and a first power voltage line to which a first power voltage is supplied, and wherein:
a second power voltage is to be supplied to a second power voltage line coupled to a cathode of the organic light emitting diode, and
the second power voltage has a first level voltage during the data pre-addressing period and a second level voltage lower than the first level voltage during the data addressing period.
10. The display device as claimed in claim 9 , wherein the driving transistor is to turn on when a first data voltage is supplied to the gate electrode of the driving transistor and to turn off when a second data voltage lower than the first data voltage is supplied to the gate electrode of the driving transistor.
11. The display device as claimed in claim 9 , wherein:
the display panel includes emission lines parallel to scan lines,
the at least one pixel includes an emission transistor to turn on to connect the gate electrode of the driving transistor with the scan transistor in response to emission signals supplied to the emission lines.
12. The display device as claimed in claim 11 , wherein:
the emission signal is to be supplied as a gate on voltage during a first period of the data pre-addressing period and the data addressing period and is to be supplied as a gate off voltage during a second period of the data pre-addressing period, and
the emission transistor is to turn on when the emission signal having the gate on voltage is supplied and is to turn off when the emission signal having the gate off voltage is supplied.
13. The display device as claimed in claim 9 , wherein:
the display panel includes emission lines parallel to scan lines,
the at least one pixel includes an emission transistor to turn on to connect the driving transistor with the organic light emitting diode in response to one or more emission signals supplied to the emission lines.
14. The display device as claimed in claim 13 , wherein:
the emission signal is to be supplied as a gate on voltage during the data addressing period and a gate off voltage during the data pre-addressing period,
the emission transistor is to turn on when the emission signal having the gate on voltage is supplied and is to turn off when the emission signal having the gate off voltage is supplied.