KR20090043303A - Organic light emitting display and driving method thereof - Google Patents

Abstract

The present invention provides a first transistor for transmitting a data signal supplied from a data wiring in response to a scan signal supplied from a first wiring, a capacitor for storing a data signal, a second transistor for driving in response to a data signal, A sub pixel including an organic light emitting diode emitting light as the second transistor is driven; A third transistor included in the subpixel and configured to sense an anode voltage value of the organic light emitting diode in response to an activation signal supplied from the second wiring; And a compensation driver which receives a voltage value through a monitor wire connected to the third transistor and generates a data signal to be supplied to the subpixel based on the voltage value.

Organic light emitting display device, compensation driver, compensation time

Description

Organic light emitting display and driving method thereof

The present invention relates to an organic light emitting display device and a driving method thereof.

An organic light emitting display device used in an organic light emitting display device is a self-light emitting device in which a light emitting layer is formed between two electrodes positioned on a substrate.

The organic light emitting device has a top emission type and a bottom emission type depending on the direction of light emission, and a passive matrix type and an active matrix type depending on the driving method. Matrix).

In the organic light emitting display device using an active matrix type of the organic light emitting display device, when a signal is supplied to a plurality of sub pixels arranged in a matrix form on the display unit, a transistor, a capacitor, and an organic light emitting diode positioned inside the sub pixel are driven. The image can be displayed.

However, organic light emitting diodes have a problem in that display quality deteriorates with time, such as deterioration of devices such as thin film transistors, capacitors, and organic light emitting diodes.

Therefore, there is a need to propose a method for solving such a problem in the conventional organic light emitting display device.

SUMMARY OF THE INVENTION An object of the present invention is to provide an organic light emitting display device and a driving method thereof capable of selectively detecting a state of a subpixel and adjusting data to be supplied to the subpixel based on the detected value. To provide.

According to the above-described problem solving means, the present invention provides a first transistor for transmitting a data signal supplied from a data wiring in response to a scan signal supplied from a first wiring, a capacitor for storing a data signal, and a drive for a data signal. A subpixel including a second transistor and an organic light emitting diode emitting light as the second transistor is driven; A third transistor included in the subpixel and configured to sense an anode voltage value of the organic light emitting diode in response to an activation signal supplied from the second wiring; And a compensation driver which receives a voltage value through a monitor wire connected to the third transistor and generates a data signal to be supplied to the subpixel based on the voltage value.

The subpixel may include a first transistor having a gate connected to the first wiring and one end connected to the data wiring, a second transistor connected to a gate of the other end of the first transistor and one end connected to the first power supply wiring, and a second transistor. An organic light emitting diode having a capacitor connected between the gate and one end, an organic light emitting diode having an anode connected to the other end of the second transistor and a cathode connected to the second power line, a gate connected to the second line and one end connected to the monitor wiring, and an organic light emitting diode It may include a third transistor connected to the other end of the anode.

The compensation driver may include a lookup table in which data between a minimum value and a maximum value of a data signal supplied to the subpixel is data, and a reference voltage generator that generates a range of reference voltage values by receiving an arbitrary value from the outside. have.

The compensation driver may compare the reference voltage value and the voltage value detected through the subpixel, select data preset in the lookup table according to the difference between the two values, and generate a data signal to be supplied to the subpixel based on the selected data. .

The third transistor may be turned on in a section in which the organic light emitting diode emits light.

The first, second and third transistors included in the sub pixel may be P-type.

In another aspect, the present invention provides a scan step of turning on a first transistor by supplying a scan signal to a first wiring of a selected subpixel among a plurality of subpixels disposed in a display unit, and a data line connected to one subpixel. A data storage step of supplying a data signal to the capacitor to store a data voltage; a light emitting step of turning on the second transistor using the data voltage and supplying power to the first power line to emit the organic light emitting diode; By supplying an activation signal to the second wiring connected to the subpixel, the third transistor is turned on and the voltage supplied to the organic light emitting diode is sensed through the monitor wiring, and the difference between the detected voltage value and the reference voltage value is compared, and one subpixel It provides a method of driving an organic light emitting display device comprising a compensation step of generating a data signal to be supplied to. do.

In the compensating step, the voltage value sensed through one subpixel may be sensed through an anode of the organic light emitting diode.

In the compensating step, a voltage signal sensed through one subpixel is compared with a reference voltage value, and the data preset in the lookup table is selected according to the difference between the two values, and a data signal to be supplied to one subpixel based on the selected data is selected. Can be generated.

In the compensation step, the minimum time of the compensation time for supplying the generated data signal to one sub-pixel may be longer than the scan time for scanning one scan line in the scan step.

In the compensation step, the maximum time of the compensation time for supplying the generated data signal to the one sub-pixel may be shorter than the scan time for scanning the whole of one frame in the scan step.

In the compensation step, the width of the compensation time for supplying the generated data signal to the one sub-pixel may be equal to the width of the scan signal supplied to the one or more scan lines in the scan step.

In the compensation step, a compensation time for supplying the generated data signal to the one subpixel may be generated as a continuous signal so as not to overlap with the other subpixel.

The present invention has an effect of providing an organic light emitting display device and a driving method thereof capable of selectively detecting a state of a subpixel and adjusting data to be supplied to the subpixel based on the detected value. Accordingly, there is an effect that can solve the problem that the display quality is degraded, such as the driving characteristics are changed by the influence that may occur in the elements included in the sub-pixel.

Hereinafter, with reference to the accompanying drawings, the specific content for the practice of the present invention will be described.

1 is a schematic plan view of an organic light emitting display device according to an embodiment of the present invention.

Referring to FIG. 1, in the organic light emitting display device, a display unit 130 including a plurality of subpixels 120 disposed in a matrix form on a substrate 110 may be located.

The subpixel 120 may include a red subpixel 120R, a green subpixel 120G, and a blue subpixel 120B, but may further emit other colors, such as white subpixels or orange subpixels. It can form more.

Accordingly, three or more subpixels 120 may be formed according to the purpose. In the present invention, three subpixels, that is, the red, green, and blue subpixels 120R, 120G, and 120B are located in a plurality of positions in a matrix form. One example will be described.

On the outer substrate 110 of the display unit 130, a plurality of wires 140 connected to the sub pixel 120 may be positioned. The plurality of wirings 140 may include a first power wiring and a second power wiring for supplying a voltage to the subpixel 120. In addition, the sub-pixel 120 may include a first wiring and a second wiring for supplying a scan signal and an activation signal. In addition, the sub-pixel 120 may include a data line for supplying a data signal. In addition, it may include a monitor wiring that can detect the state of the sub-pixel 120.

The driving unit 150 may be positioned on the outer lower substrate 110 of the display unit 130.

The driver 150 may include a scan driver connected to first and second wires, which are part of the plurality of wires 140, to supply a scan signal and an activation signal to the subpixels 120. In addition, the driver 150 may include a data driver connected to a data line, which is another part of the plurality of wires 140, to supply a data signal to the subpixels 120. In addition, the driver 150 may include a compensation driver connected to a monitor wire, which is another part of the plurality of wires 140, to detect a state of the subpixels 120. A detailed description of the compensation driver is added to the following.

In the present invention, for convenience of description, the scan driver, the data driver, and the compensation driver are positioned on a single chip in the driver 150, but the scan driver and the data driver are separately designed, and the compensation driver may be mounted in the data driver. have. Hereinafter, it is assumed that the data driver and the compensation driver are mounted on the same chip and interoperate with each other.

The pad unit 155 may be located on the outer substrate 110 of the driving unit 150.

The pad unit 155 is intended for electrical connection between the substrate 110 and the external circuit board 160, and the connection between the substrate 110 and the external circuit board 160 is a flexible cable (eg, FPC) ( 165) and the like, but is not limited thereto.

For reference, the driving unit 150 is disposed on the substrate 110 as described above, which is referred to as a chip on glass (COG) method. The driving unit 150 may further include a chip on film disposed on the flexible cable 165. ) Can be designed in such a way as to. That is, the connection with the substrate 110, the driver 150, and the external circuit board 160 may be flexibly designed according to the design method.

On the other hand, on the external circuit board 160, a power supply unit 170 connected to the first power line and the second power line, which is a part of the plurality of wires 140, to supply the voltage to the subpixel 120 may be located. have. In addition, a timing controller 180 may be provided on the external circuit board 160 to supply a scan signal, an activation signal, a data signal, etc. to the driver 150, and other driving devices may be further located.

Hereinafter, the cross-sectional structure of one subpixel will be attached and described in more detail. However, the structure of the subpixel is merely exemplary and is not limited thereto.

2A and 2B are cross-sectional views illustrating subpixels according to an exemplary embodiment of the present invention.

First, referring to FIG. 2A, the substrate 110 may be located.

The substrate 110 may be selected as a material for forming an element having excellent mechanical strength or dimensional stability. As the material of the substrate 110, a glass plate, a metal plate, a ceramic plate or a plastic plate (polycarbonate resin, acrylic resin, vinyl chloride resin, polyethylene terephthalate resin, polyimide resin, polyester resin, epoxy resin, silicone resin, fluorine) Resin, etc.) is mentioned.

The buffer layer 111 may be positioned on the substrate 110. The buffer layer 111 may be formed to protect the thin film transistor formed in a subsequent process from impurities such as alkali ions flowing out of the substrate 110. The buffer layer 111 may use silicon oxide (SiO ₂ ), silicon nitride (SiNx), or the like.

The semiconductor layer 112 may be positioned on the buffer layer 111. The semiconductor layer 112 may include amorphous silicon or polycrystalline silicon obtained by crystallizing the same. Although not shown here, the semiconductor layer 112 may include a channel region, a source region, and a drain region, and the source region and the drain region may be doped with P-type or N-type impurities.

The gate insulating layer 113 may be positioned on the substrate 110 including the semiconductor layer 112. The gate insulating layer 113 may be selectively formed using silicon oxide (SiO ₂ ), silicon nitride (SiNx), or the like.

The gate electrode 114 may be positioned on the gate insulating layer 113 to correspond to the channel region of the semiconductor layer 112. The gate electrode 114 is made of aluminum (Al), aluminum alloy (Al alloy), titanium (Ti), silver (Ag), molybdenum (Mo), molybdenum alloy (Mo alloy), tungsten (W), tungsten silicide (WSi _2). It may include any one of).

An interlayer insulating film 115 may be positioned on the substrate 110 including the gate electrode 114. The interlayer insulating film 115 may be an organic film or an inorganic film, or may be a composite film thereof.

When the interlayer insulating film 115 is an inorganic film, the interlayer insulating film 115 may include silicon oxide (SiO ₂ ), silicon nitride (SiNx), or SOG (silicate on glass). On the other hand, the organic film may include an acrylic resin, a polyimide resin or a benzocyclobutene (BCB) resin. First and second contact holes 115a and 115b may be disposed in the interlayer insulating layer 115 and the gate insulating layer 113 to expose a portion of the semiconductor layer 112.

The first electrode 116a may be positioned on the interlayer insulating film 115. The first electrode 116a may be an anode and may have a single layer structure including a conductive layer such as indium tin oxide (ITO) or indium zinc oxide (IZO). In addition, the first electrode 116a may have a multilayer structure including a conductive layer such as indium tin oxide (ITO) or indium zinc oxide (IZO). The description thereof will be described in more detail with reference to the accompanying drawings.

Source and drain electrodes 116b and 116c may be positioned on the interlayer insulating film 115. The source electrode and the drain electrode 116b and 116c may be electrically connected to the semiconductor layer 112 through the first and second contact holes 115a and 115b. A portion of the drain electrode 116c may be positioned on the first electrode 116a and electrically connected to the first electrode 116a.

The source and drain electrodes 116b and 116c may include a low resistance material to lower the wiring resistance. Here, the source electrode and the drain electrode 116b and 116c may be formed of aluminum (Al), aluminum (Alnd), molybdenum (Mo), chromium (Cr), titanium nitride (TiN), molybdenum nitride (MoN), or chromium. It may be formed into a multilayer structure including a metal layer such as nitride (CrN). The description thereof will be described in more detail with reference to the accompanying drawings.

The transistor located on the ideal substrate 110 may include a gate electrode 114, a source electrode, and a drain electrode 116b and 116c, and a transistor array having a plurality of transistors and capacitors may be electrically connected to the following organic light emitting diodes. have. (However, the structure of the capacitor is omitted)

An insulating layer 117 exposing a portion of the first electrode 116a may be disposed on the first electrode 116a (eg, an anode). The insulating layer 117 may include an organic material such as benzocyclobutene (BCB) resin, acrylic resin, or polyimide resin.

The organic light emitting layer 118 may be disposed on the exposed first electrode 116a, and the second electrode 119 (eg, a cathode) may be positioned on the organic light emitting layer 118. The second electrode 119 may be a cathode for supplying electrons to the organic light emitting layer 118, and may include magnesium (Mg), silver (Ag), calcium (Ca), aluminum (Al), or an alloy thereof. .

The organic light emitting diode connected to the source or drain electrodes 116b and 116c of the transistor included in the transistor array on the ideal substrate 110 includes the first electrode 116a, the organic light emitting layer 118, and the second electrode 119. It may include.

Unlike FIG. 2A, referring to FIG. 2B, the first electrode 116a positioned on the source or drain electrodes 116b and 116c may be positioned on the planarization layer 117a to planarize the surface of the transistor array. In this case, the insulating layer 117b may be positioned to expose a portion of the first electrode 116a (eg, an anode) on the planarization layer 117a.

Meanwhile, in the subpixel structures shown in FIGS. 2A and 2B, the structure of the transistor included in the transistor array may vary depending on whether the gate structure is a top gate or a batam gate. In addition, the structure of the transistor may vary depending on the number of masks used in forming the transistor array and the semiconductor layer material. Therefore, the structure of the subpixel is not limited thereto as described above.

On the other hand, the organic light emitting display device as described above, when the sub-pixel emits light, the sub-pixel circuit that senses the voltage supplied to the sub-pixel and generates and compensates a data signal to be supplied to the sub-pixel based on the detected voltage value. Has a configuration.

The sub-pixel circuit includes a first transistor for transmitting a data signal supplied from the data line in response to a scan signal supplied from the first line, a capacitor for storing the data signal, a second transistor for driving in response to the data signal; The organic light emitting diode may include an organic light emitting diode emitting light as the second transistor is driven. And a third transistor configured to sense an anode voltage value of the organic light emitting diode in response to an activation signal supplied from the second wiring.

Hereinafter, a circuit configuration of one subpixel will be described in more detail with reference to an embodiment. However, the circuit configuration of the sub pixel is not limited to this.

3 is a diagram illustrating a circuit configuration of a subpixel according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the subpixel may include a first transistor T1 having a gate connected to the first line Scan and one end connected to the data line Data. In addition, a gate may be connected to the other end of the first transistor T1 and may include a second transistor T2 having one end connected to the first power line Vdd. In addition, the second transistor T2 may include a capacitor C connected between the gate and one end. The organic light emitting diode D may include an organic light emitting diode D having an anode connected to the other end of the second transistor T2 and a cathode connected to the second power line Gnd. In addition, the transistor may include a third transistor T3 having a gate connected to the second wiring Test, one end connected to the monitor wiring Mon, and the other end connected to the anode of the organic light emitting diode D.

Here, the first, second, and third transistors T1, T2, and T3 included in the subpixel may be P-type transistors.

Here, the first wiring Scan may be a wire for transmitting the scan signal output from the scan driver, and the second wiring Test may be a wire for transmitting an activation signal output from the scan driver or the data driver S-Driver. . The first power line Vdd and the second power line Gnd may be wires for transferring a voltage output from the power supply unit. The data line Data may be a line transferring a data signal output from the data driver S-Driver. The monitor wire Mon may be a wire that senses the voltage supplied to the subpixel and transfers the sensed voltage value to the compensation driver M-Driver.

Hereinafter, the compensation driver will be described in more detail.

4 is a schematic diagram of a compensation driver and a data driver according to an exemplary embodiment of the present invention.

Although not shown in detail, the compensation driver M-Driver illustrated in FIG. 4 may include a lookup table in which values between a minimum value and a maximum value of a data signal supplied to the subpixel are converted into data. The apparatus may further include a reference voltage generator that receives an arbitrary value USR from an external source (eg, a user, a microcomputer, etc.) to generate a range of reference voltage values differently. Here, the data value can be extended to other values, such as registers, instructions, of course.

The compensation driver M-Driver may receive the anode voltage of the organic light emitting diode included in the subpixel through the monitor line Mon. Then, the compensation driver M-Driver may compare the reference voltage value and the voltage value sensed through the subpixels and select data preset in the lookup table by referring to the difference between the two values.

Thereafter, the compensation driver M-Driver may transfer the selected data value FB to the data driver S-Driver. The data driver S-Driver, which receives the data value FB from the compensation driver M-Driver, generates a data signal to be supplied to the subpixel based on the data value FB, and converts the generated data signal into a data line Data. Can be supplied to the subpixel.

Therefore, the compensation driver M-Driver may generate the data value FB to adjust the amount of the data signal or the voltage of the data signal output from the data driver S-Driver. When the compensation driver M-Driver transfers the data value FB to the data driver S-Driver, the data driver S-Driver may adjust a data signal to be supplied to the subpixel based on the data value FB. do.

That is, directly outputting the data signal to be supplied to the subpixel may be a data driver (S-Driver), and indirectly generating the data signal to adjust the data signal to be supplied to the subpixel may be a compensation driver (M-Driver). Can be

To help understand the description, the following assumptions are added.

It is assumed that the data value of the voltage flowing through the organic light emitting diode has a range of 1 to 100. At this time, any value that can be set by the reference voltage generator may be advantageously in the range of 1 to 100, but is not limited thereto.

Here, the range of the data value of the voltage value flowing through the organic light emitting diode corresponds to the total grayscale data signal to be expressed in the sub-pixel, and voltages corresponding to all grayscale data signals of the value flowing through the organic light emitting diode It can be defined as being a range.

In addition to the above assumptions, assuming that an arbitrary value USR input from the outside has a value of 50 and at any point in time, assuming that the voltage value detected through a specific sub-pixel also has 50, the two values are the same. M-Driver) may not adjust the data signal to be supplied to a particular sub-pixel. On the contrary, assuming that an arbitrary value USR input from the outside has 60, and at any point in time, assuming that the voltage value sensed through a specific sub-pixel also has 50, the two values are different. M-Driver) may generate data to adjust a data signal to be supplied to a specific sub-pixel.

Therefore, the random value USR set in the reference voltage generator is a determination condition for detecting whether a value less than the original signal is supplied to a specific sub pixel when the data signal is supplied to the sub pixel. will be.

Therefore, the compensation driver M-Driver may determine whether to adjust data to be supplied to a specific sub-pixel and how much to adjust the data signal in the next scan period based on the information obtained through the above process. Here, the larger the range of the data valued value is, the wider the range of the determination condition becomes, so that the data signal to be supplied to the subpixel can be more accurately adjusted.

Hereinafter, the driving method will be described. However, reference is made to FIG. 3 to help understand the description.

The scan step of turning on the first transistor T1 may be performed by supplying a scan signal to the first wiring Scan of the selected subpixel among the plurality of subpixels arranged in the display unit.

In addition, a data storage step of supplying a data signal to a data line Data connected to one sub pixel to store a data voltage in the capacitor C may be performed.

The light emitting step of turning on the second transistor T3 by using the data voltage and supplying power to the first power line Vdd may emit the organic light emitting diode D.

The third transistor T3 is turned on by supplying an activation signal to the second interconnection test connected to one subpixel, and the voltage supplied to the organic light emitting diode D is sensed through the monitor interconnection Mon. The compensation step of comparing the difference between the voltage value and the reference voltage value and generating a data signal to be supplied to one sub-pixel may be performed.

In the compensating step, the voltage value sensed through one sub-pixel may be sensed through an anode of the organic light emitting diode D.

In addition, in the compensating step, a voltage signal sensed through one subpixel may be compared with a reference voltage value, and a data signal to be supplied to one subpixel may be generated based on the data preset in the lookup table by referring to the difference between the two values. have.

Further, the minimum time of the compensation time for supplying the data signal generated in the compensation step to one sub-pixel may be longer than the scan time for scanning one scan line in the scan step. (A) In addition, in the compensation step, The maximum time of the compensation time for supplying a data signal to the one sub-pixel may be equal to or shorter than the scan time for scanning the entire frame in the scanning step.

Therefore, the range of compensation time may be equal to (A) <compensation time ≤ (B).

In addition, the width of the compensation time for supplying the data signal generated in the compensation step to the one sub-pixel may be equal to the width of the scan signal supplied to the one or more scan lines in the scan step.

In the compensation step, a compensation time for supplying the generated data signal to the one subpixel may be generated as a continuous signal so as not to overlap with the other subpixel.

The present invention has an effect of providing an organic light emitting display device and a driving method thereof capable of selectively detecting a state of a subpixel and adjusting data to be supplied to the subpixel based on the detected value. Accordingly, there is an effect that can solve the problem that the display quality is degraded, such as the driving characteristics are changed by the influence that may occur in the elements included in the sub-pixel.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical configuration of the present invention described above may be modified in other specific forms by those skilled in the art to which the present invention pertains without changing its technical spirit or essential features. It will be appreciated that it may be practiced. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. In addition, the scope of the present invention is shown by the claims below, rather than the above detailed description. Also, it is to be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

1 is a schematic plan view of an organic light emitting display device according to an embodiment of the present invention;

Degree.

2A and 2B illustrate cross-sectional views of subpixels according to an exemplary embodiment of the present invention.

3 is an exemplary circuit configuration of a subpixel according to an embodiment of the present invention.

4 is a schematic diagram of a compensation driver and a data driver according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

110: substrate 120: subpixel

130: display unit 140: a plurality of wirings

150: drive unit 160: external circuit board

170: power supply unit 180: timing controller unit

Claims (13)

A first transistor for transmitting a data signal supplied from the data line in response to a scan signal supplied from the first line, a capacitor for storing the data signal, a second transistor for driving in response to the data signal, and the first transistor; A subpixel including an organic light emitting diode which emits light as the two transistors are driven; A third transistor included in the sub pixel and configured to sense an anode voltage value of the organic light emitting diode in response to an activation signal supplied from a second wiring; And And a compensation driver which receives the voltage value through the monitor wire connected to the third transistor and generates a data signal to be supplied to the subpixel based on the voltage value. The method of claim 1, The sub pixel is, The first transistor having a gate connected to the first wiring and having one end connected to the data line, the second transistor having a gate connected to the other end of the first transistor and one end connected to a first power line, and the second The capacitor connected between the gate and one end of the transistor, the organic light emitting diode having an anode connected to the other end of the second transistor and a cathode connected to a second power supply wiring, and a gate connected to the second wiring, and connected to the monitor wiring. And a third transistor having one end connected to the other end of the organic light emitting diode. The method of claim 1, The compensation driver, An organic light emitting display including a lookup table that dataates a value between a minimum value and a maximum value of a data signal supplied to the subpixel, and a reference voltage generator that receives an arbitrary value from an external source and generates a range of reference voltage values differently Device. The method of claim 3, The compensation driver, Comparing the reference voltage value with the voltage value detected through the subpixel, selecting data preset in the lookup table according to the difference between the two values, and generating a data signal to be supplied to the subpixel based on the selected data; EL display. The method of claim 1, The third transistor, An organic light emitting display device which is turned on in a section in which the organic light emitting diode emits light. The method of claim 1, The first, second and third transistors included in the sub pixel are P-type organic light emitting display device. A scan step of turning on the first transistor by supplying a scan signal to a first wiring of a selected one of the plurality of sub pixels arranged in the display unit; A data storage step of supplying a data signal to a data line connected to the one subpixel to store a data voltage in a capacitor; A light emitting step of turning on a second transistor using the data voltage and supplying power to a first power wiring to emit an organic light emitting diode; By supplying an activation signal to the second wiring connected to the one sub-pixel to turn on the third transistor, sense the voltage supplied to the organic light emitting diode through the monitor wiring, compare the difference between the detected voltage value and the reference voltage value And a compensating step of generating a data signal to be supplied to the one sub-pixel. The method of claim 7, wherein In the compensation step, The voltage value detected through the one subpixel is A method for driving an organic light emitting display device detected through an anode of the organic light emitting diode. The method of claim 7, wherein In the compensation step, Compare the voltage value sensed through the one subpixel with the reference voltage value, select data preset in a lookup table according to the difference between the two values, and select a data signal to supply the one subpixel based on the selected data. A method of driving an organic light emitting display device. The method of claim 7, wherein In the compensation step, A method of driving an organic light emitting display device, wherein a minimum time of a compensation time for supplying a generated data signal to the one subpixel is longer than a scan time for scanning one scan line in the scanning step. The method of claim 7, wherein In the compensation step, The maximum time of the compensation time for supplying the generated data signal to the one sub-pixel is shorter than the scan time for scanning the entire frame in the scanning step. The method of claim 7, wherein In the compensation step, A method of driving an organic light emitting display device, wherein a width of a compensation time for supplying a generated data signal to one subpixel is equal to a width of a scan signal supplied to at least one scan line in the scanning step. The method of claim 7, wherein In the compensation step, A method of driving an organic light emitting display device, wherein a compensation time for supplying a generated data signal to one subpixel is generated as a continuous signal so as not to overlap with another subpixel.

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