1. A display device, comprising:
a display panel, the display panel including a plurality of pixels that, during one frame, receive a first voltage transmitted through a data line and a second voltage having a higher level than the first voltage, receive and store a third voltage of a first image data signal corresponding to a current frame, and emit light by driving current for a fourth voltage corresponding to a second image data signal corresponding to a previous one of the current frame, wherein, of one frame, a first period for storing the third voltage and a second period for emitting light by the driving current for the fourth voltage overlap each other.
2. The display device as claimed in claim 1, wherein
the first image data signal is a first viewpoint image data signal or a second viewpoint image data signal corresponding to the current one,
the second image data signal is a first viewpoint image data signal or a second viewpoint image data signal corresponding to the previous frame, and
viewpoints of the first image data signal and the second image data signal are different.
3. The display device as claimed in claim 1, wherein one frame comprises:
a reset period for transmitting the first voltage to one end of a compensation capacitor connected to a gate electrode of a driving transistor through the data line;
an initialization period for applying a first power source voltage of a first level from a power supply unit and setting a drain electrode voltage of the driving transistor to the first level;
a compensation period for simultaneously compensating for a threshold voltage of the driving transistor of each of the plurality of pixels;
a data transmission period for transmitting the fourth voltage to one end of the compensation capacitor;
a data writing period for storing the third voltage in response to a scan signal sequentially transmitted to the plurality of pixels; and
a light emission period for allowing an organic light emitting diode of each of the plurality of pixels to simultaneously emit light by the driving current for the fourth voltage transmitted in the data transmission period, the light emission period overlapping the data writing period.
4. The display device as claimed in claim 3, wherein the data writing period is equal to or shorter than the light emission period.
5. The display device as claimed in claim 3, wherein a duration of the reset period during one frame is determined depending on material characteristics of the driving transistor.
6. The display device as claimed in claim 3, wherein all of the pixels do not emit light during the reset period, the initialization period, the compensation period, and the data transmission period.
7. The display device as claimed in claim 1, wherein the first voltage has a gate-on voltage level for turning on elements of each pixel.
8. The display device as claimed in claim 1, wherein the second voltage is set to a voltage value between lowest and highest values of a data voltage of an image data signal.
9. The display device as claimed in claim 1, wherein an amount of driving current is determined by taking into account an amount of voltage change according to a capacitance ratio of a storage element connected to one end of a compensation capacitor connected to a gate electrode of a driving transistor of the pixel, with respect to the fourth voltage.
10. The display device as claimed in claim 1, wherein each of the plurality of pixels comprises:
an organic light emitting diode;
a first transistor that transmits the driving current to the organic light emitting diode;
a second transistor that transmits the fourth voltage to a first contact point connected to one end of a compensation capacitor connected to a gate electrode of the first transistor;
a third transistor that is provided between the gate electrode and a drain electrode of the first transistor and diode-connects the gate electrode and drain electrode of the first transistor;
a fourth transistor that is provided between the data line and the first contact point and transmits the first voltage and the second voltage to the first contact point;
a fifth transistor that transmits a predetermined reference voltage applied from a power supply line to a second contact point connected to one electrode of the second transistor, in response to a corresponding one of a plurality of scan signals;
a storage capacitor, electrodes of which are connected between a source electrode of the first transistor and the first contact point, and which stores a voltage corresponding to a potential difference between the storage capacitor electrodes;
a compensation capacitor, electrodes of which are connected between the gate electrode of the first transistor and the first contact point, and which stores a voltage corresponding to a potential difference between the compensation capacitor electrodes; and
a sustain capacitor, electrodes of which are connected between the data line and the second contact point, and which stores a voltage corresponding to a potential difference between the sustain capacitor electrodes.
11. The display device as claimed in claim 10, wherein the sustain capacitor stores the third voltage until a data transmission period of a next frame, and stores the fourth voltage until a data transmission period of the current frame.
12. The display device as claimed in claim 10, wherein
a first power source voltage applied to the source electrode of the first transistor is transmitted at low level during a reset period and an initialization period,
a second power source voltage applied to the drain electrode of the first transistor is transmitted at low level during the initialization period and a light emission period,
the plurality of scan signals are sequentially transmitted at a gate-on voltage level for each pixel line during a data writing period,
a first control signal transmitted to gate electrodes of the third transistor and fourth transistor is transmitted at a gate-on voltage level during the reset period and a compensation period, and is changed from the gate-on voltage level to a gate-off voltage level and transmitted during the initialization period, and
a second control signal transmitted to the gate electrode of the second transistor is transmitted at a gate-on voltage level during a data transmission period.
13. The display device as claimed in claim 10, wherein
the first voltage is applied through a data line connected to a source electrode of the fourth transistor during a reset period while the third transistor and the fourth transistor are in a turned-on state, and
the second voltage is applied through the data line during an initialization period and a compensation period while the third transistor and the fourth transistor are in the turned-on state.
14. The display device as claimed in claim 1, wherein each of the plurality of pixels receives the first voltage through a power supply line and the second voltage through the data line, during one frame.
15. The display device as claimed in claim 14, wherein one frame includes:
a reset period for transmitting the first voltage to one end of a compensation capacitor connected to a gate electrode of a driving transistor through the power supply line;
an initialization period for applying a first power source voltage of a first level from a power supply unit and setting a drain electrode voltage of the driving transistor of the pixel to the first level;
a compensation period for simultaneously compensating for a threshold voltage of the driving transistor of each of the plurality of pixels;
a data transmission period for transmitting a fourth voltage of a second image data signal corresponding to the previous frame to one end of the compensation capacitor;
a data writing period for storing the third voltage of the first image data signal corresponding to the current frame in response to a scan signal sequentially transmitted to the plurality of pixels; and
a light emission period for allowing an organic light emitting diode of each of the plurality of pixels to simultaneously emit light by the driving current for the fourth voltage transmitted in the data transmission period, the light emission period overlapping the data writing period.
16. The display device as claimed in claim 15, wherein the data writing period is equal to or shorter than the light emission period.
17. The display device as claimed in claim 14, wherein each of the plurality of pixels includes:
an organic light emitting diode;
a first transistor that transmits the driving current to the organic light emitting diode;
a second transistor that is provided between the data line and a third contact point and transmits the second voltage and a data voltage of the first image data signal corresponding to the current frame to the third contact point through the data line in response to a corresponding one of a plurality of scan signals;
a third transistor that is provided between a gate electrode and a drain electrode of the first transistor and diode-connects the gate electrode and drain electrode of the first transistor;
a fourth transistor that is provided between a fourth contact point and a fifth contact point and transmits a voltage stored in response to the second image data signal corresponding to the previous frame to the fifth contact point;
a fifth transistor that is provided between the power supply line and the fourth contact point and transmits the first voltage applied through the power supply line to the fourth contact;
a storage capacitor, electrodes of which are connected between a source electrode of the first transistor and the fifth contact point, and which stores a voltage corresponding to a potential difference between the storage capacitor electrodes;
a compensation capacitor, electrodes of which are connected between the gate electrode of the first transistor and the fifth contact point, and which stores a voltage corresponding to a potential difference between the compensation capacitor electrodes; and
a sustain capacitor, electrodes of which are connected between the third contact point and the fourth contact point, and which stores a voltage corresponding to a potential difference between the sustain capacitor electrodes.
18. The display device as claimed in claim 17, wherein the sustain capacitor maintains a voltage value stored for the data voltage of the first image data signal until a data transmission period of a next frame, and maintains a voltage value stored for the second image data signal until a data transmission period of the current frame.
19. The display device as claimed in claim 17, wherein
a first power source voltage applied to the source electrode of the first transistor is transmitted at a low level during an initialization period,
a second power source voltage applied to the drain electrode of the first transistor is transmitted at a low level during a light emission period,
the plurality of scan signals are simultaneously transmitted at a gate-on voltage level to the gate electrodes of the second transistors of the plurality of pixels during a data transmission period, and sequentially transmitted at the gate-on voltage level to gate electrodes of the second transistors of each pixel line during a data writing period,
a first control signal transmitted to a gate electrode of the third transistor is transmitted at a gate-on voltage level during a compensation period,
a second control signal transmitted to a gate electrode of the fourth transistor is transmitted at a gate-on voltage level during a reset period, the compensation period, and the data transmission period, and
a third control signal transmitted to a gate electrode of the fifth transistor is transmitted at a gate-on voltage level during a remaining period other than the data transmission period.
20. The display device as claimed in claim 17, wherein
the first voltage is applied through the power supply line during a reset period while the fifth transistor is in a turned-on state, and
the second voltage is applied through the data line during a data transmission period in which the plurality of scan signals are simultaneously transmitted at a low level to turn on the second transistor.
21. The display device as claimed in claim 1, further comprising:
a scan driver that generates and transmits a plurality of scan signals for activating driving of the plurality of pixels;
a data driver that transmits the first voltage, the second voltage, or a data voltage of an image data signal corresponding to the plurality of pixels through the data line;
a power supply controller that controls a driving power source voltage supplied to the plurality of pixels and a reference voltage;
a compensation control signal unit that generates and transmits a first control signal and a second control signal to control the transistors included in each of the plurality of pixels depending on periods included in one frame; and
a timing controller that processes an external image signal to generate and transmit an image data signal corresponding to a frame to the data driver, and controls a driving of the scan driver, the data driver, the power supply controller, and the compensation control signal unit.
22. The display device as claimed in claim 21, wherein
the data driver transmits the second data voltage or a data voltage of an image data signal corresponding to the plurality of pixels, and
the compensation control signal unit generates and transmits a third control signal to allow the power supply controller to apply the reference voltage.
23. A method for driving a display device that includes a display panel, the display panel including a plurality of pixels that receive a first voltage transmitted through a data line and a second voltage having a higher level than the first voltage, receive and store a third voltage of a first image data signal corresponding to a current frame, and emit light by driving current for a fourth voltage corresponding to a second image data signal corresponding to a previous frame, the method comprising:
a reset step that includes transmitting the first voltage to one end of a compensation capacitor connected to a gate electrode of a driving transistor through the data line;
an initialization step that includes applying a first power source voltage of a first level from a power supply unit and setting a drain electrode voltage of the driving transistor to the first level;
a compensation step that includes simultaneously compensating for a threshold voltage of the driving transistor of each of the plurality of pixels;
a data transmission step that includes transmitting the fourth voltage to one end of the compensation capacitor;
a data writing step that includes storing the third voltage in response to a scan signal sequentially transmitted to the plurality of pixels; and
a light emission step that includes allowing an organic light emitting diode of each of the plurality of pixels to simultaneously emit light by the driving current for the fourth voltage transmitted in the data transmission step, the light emission step overlapping the data writing step.
24. The method as claimed in claim 23, wherein a period in which the data writing step is performed is equal to or shorter than a period in which the light emission step is performed.
25. The method as claimed in claim 23, wherein the first voltage has a gate-on voltage level for turning on elements of each pixel.
26. The method as claimed in claim 23, wherein the second voltage is set to a voltage value between lowest and highest values of a data voltage of an image data signal.
27. The method as claimed in claim 23, wherein an amount of driving current is determined by taking into account an amount of voltage change according to a capacitance ratio of a storage element connected to one end of the compensation capacitor connected to the gate electrode of the driving transistor, with respect to the fourth voltage.
28. The method as claimed in claim 23, wherein all of the pixels do not emit light during the reset step, the initialization step, the compensation step, and the data transmission step.
29. The method as claimed in claim 23, wherein
the first image data signal is a first viewpoint image data signal or a second viewpoint image data signal corresponding to the current frame,
the second image data signal is a first viewpoint image data signal or a second viewpoint image data signal corresponding to the previous frame, and
viewpoints of the first image data signal and the second image data signal are different.
30. The method as claimed in claim 23, wherein each of the plurality of pixels receives the first voltage through a power supply line in the reset step and receives the second voltage through the data line in the data transmission step.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of producing a fatty acid ester, comprising the step of reacting fat and oil with an alcohol in the presence of at least one third component, wherein the third component is in a supercritical state or subcritical state under the condition of preventing a uniform phase from forming.
2. The method according to claim 1, wherein the third component is carbon dioxide.
3. The method according to claim 1, wherein the third component is a hydrocarbon having 1 to 12 carbon atoms.
4. The method according to any one of claims 1 to 3, wherein the third component is added in an amount of 0.1 to 300 mols based on 1 mol of fat and oil.