KR20180033389A - Organic light emitting display and method for the same - Google Patents

Abstract

The present invention relates to an organic light emitting displaying device and a degradation compensation method thereof. The organic light emitting displaying device comprises a display panel, a drive IC, a test socket, a test drive IC, and a control unit. The display panel includes a plurality of pixels having an organic light emitting diode, is driven by a first driving signal corresponding to a first control signal and outputs the first driving signal by receiving the first control signal. The drive IC senses a pixel voltage applied to the organic light emitting diode from the pixels. The test socket includes a test pattern in which current flows in correspondence with a second driving signal and outputs brightness information corresponding to the current flowing in the test pattern. The test drive IC outputs the second driving signal to the test pattern by receiving a second control signal. The control unit generates the first control signal and the second control signal, generates degradation information by receiving the brightness information and the pixel voltage from the test socket and compensates for the first control signal. According to an embodiment of the present invention, the organic light emitting displaying device can prevent degradation of image quality depending on use time by compensating for the degradation of the organic light emitting displaying device.

Description

TECHNICAL FIELD [0001] The present invention relates to an organic light emitting diode (OLED) display,

The present embodiments relate to an organic light emitting display and a deterioration compensation method thereof.

An active matrix type organic light emitting display device including an organic light emitting diode (OLED) that emits light by itself has a high response speed, and is advantageous in light emitting efficiency, luminance, and viewing angle.

The organic light emitting diode includes an anode electrode, a cathode electrode, and an organic compound layer formed therebetween. The organic compound layer includes a hole injection layer (HIL), a hole transport layer (HTL), an emission layer (EML), an electron transport layer (ETL), and an electron injection layer EIL). When driving voltage is applied to the anode electrode and the cathode electrode, electrons passing through the hole transporting layer (HTL) and the electron transporting layer (ETL) move to the light emitting layer (EML) to form excitons, It is possible to generate visible light.

The OLED display employing the organic light emitting diode includes an organic light emitting diode in each pixel, and the luminance can be adjusted by controlling the amount of driving current flowing in the organic light emitting diode according to the gradation of the video image data. However, the organic light emitting diode has a problem that the operating point voltage (threshold voltage) of the organic light emitting diode increases with the lapse of the light emission time, thereby deteriorating the luminous efficiency. In particular, the characteristics of the organic light emitting diode may not always be constant due to the scattering of the process, and the deterioration of the organic light emitting diode may be compensated for using the degradation compensation due to such a difference in characteristics.

In order to compensate the deterioration, it is necessary to perform characteristic modeling on deterioration of the organic light emitting diode, and deterioration compensation performance is determined by the accuracy of modeling. In addition, the degradation characteristics of the organic light emitting diode are also scattered by the process scattering, and the process for modeling different deterioration according to the date when the organic light emitting display is manufactured is further required.

It is an object of the present embodiments to provide an organic light emitting display device capable of compensating for deterioration by measuring the degree of deterioration of an organic light emitting diode according to use of a display panel, and a method of compensating deterioration thereof.

It is another object of the present invention to provide an organic light emitting display device and a method of compensating deterioration thereof, which can be modeled in a process of using the organic light emitting diode without preparing a manufacturing process for modeling deterioration of the organic light emitting diode.

In one aspect, the present embodiments provide a display panel including a plurality of pixels including an organic light emitting diode, the display panel being driven by a first driving signal corresponding to the first control signal, A driving IC for outputting a first driving signal, sensing a pixel voltage applied to the organic light emitting diode from the pixel, and a test pattern for flowing a current in response to the second driving signal, wherein the luminance information corresponding to the current flowing in the test pattern is A test drive IC for receiving a first control signal and a second control signal and outputting a second drive signal in a test pattern by receiving a second control signal and generating a first control signal and a second control signal, And a controller for generating reception deterioration information and compensating for the first control signal.

According to another aspect of the present invention, there is provided a display device comprising: a display panel divided into a normal display area for displaying a general image and a test display area for displaying a test image; a driving signal for driving the display panel, A driving signal is divided into a normal display period for driving the normal display region in one frame period and a test display period for driving the test display region and a driving signal is applied to the organic light emitting diode included in the pixels included in the test display region A drive IC for sensing the pixel voltage, a sensing unit for generating luminance information corresponding to an amount of current flowing in the test display region, and a driver IC for receiving the brightness information from the sensing unit, The pixel voltage is transmitted to deteriorate Generating information corresponding to the degradation information, and to provide an organic light emitting display device including a control unit for compensating the control signal.

According to another aspect of the present invention, there is provided a deterioration compensation method for compensating deterioration of a display panel by generating deterioration information on a display panel. The deterioration compensation method includes a normal display period for displaying a normal image and a test display interval Generating luminance information in a test display section and sensing a pixel voltage applied to the pixel, and generating deterioration information corresponding to the luminance information and the pixel voltage and compensating the control signal And to provide a deterioration compensation method including the deterioration compensation method.

According to the embodiments, it is possible to provide an organic light emitting display device and a deterioration compensation method thereof that can compensate for deterioration and prevent the deterioration of image quality according to the use time.

In addition, according to the embodiments, there is no need to perform modeling during the manufacturing process, and it is possible to provide an organic light emitting display device and a deterioration compensation method thereof that enable deterioration to be modeled by itself in the course of use.

1 is a structural view showing an embodiment of a display device according to the present embodiment.
FIG. 2A is a plan view showing an embodiment of a printed circuit board on which the control unit shown in FIG. 1 is disposed.
2B is a side view showing a cross-section of II-II of FIG. 2A.
FIG. 3 is a structural diagram showing an embodiment of the control unit shown in FIG. 1. FIG.
4 is a structural view showing an organic light emitting display according to a second embodiment of the present invention.
5A is a front view showing one embodiment of a display panel of the organic light emitting display shown in FIG.
5B is a front view showing one embodiment of a photosensor substrate disposed on a test display area.
6A is a side view showing a first embodiment of an aspect of the organic light emitting diode display shown in FIG. 5A.
6B is a side view showing a second embodiment of an aspect of the organic light emitting diode display shown in FIG. 5A.
6C is a side view showing a third embodiment of an aspect of the organic light emitting diode display shown in FIG. 5A.
7 is a flowchart illustrating a method of compensating deterioration of an OLED display according to an exemplary embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In the drawings, like reference numerals are used to denote like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the components from other components, and the terms do not limit the nature, order, order, or number of the components. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; intervening "or that each component may be" connected, "" coupled, "or " connected" through other components.

1 is a structural view showing an organic light emitting diode display according to a first embodiment of the present invention.

Referring to FIG. 1, the OLED display 100 may include a display panel 110, a driver IC 120, a controller 130, a test socket 140, and a test drive IC 150.

The display panel 110 includes a plurality of pixels and can display an image by light emitted corresponding to a driving current flowing for each pixel. Each pixel may include an organic light emitting diode, and the organic light emitting diode may emit light corresponding to the magnitude of the driving current. To this end, each pixel may receive a first driving signal and a high potential voltage to generate a driving current. The first driving signal may include a data signal and a gate signal. In addition, the display panel 110 may include a plurality of data lines, a plurality of gate lines, and a plurality of power supply lines, and may transmit a data signal, a gate signal, and a high power voltage to each pixel. In addition, the display panel 110 may include an active area AA for displaying an image and an inactive area NAA for not displaying an image. A pad (not shown) connected to the drive IC 120 is disposed in the non-active area NAA to receive the first drive signal from the drive IC 120. A gate in panel (GIP) circuit part 111 connected to the gate wiring is formed in the inactive area on one side of the display panel 110. The GIP circuit part 111 receives the first driving signal from the drive IC 120 And a gate signal is generated and transmitted to each pixel through a gate wiring. The display panel 110 may further include a wiring for transmitting the voltage applied to the organic light emitting diode included in the pixel to the drive IC 150.

The drive IC 120 may receive the first control signal from the controller 130 to generate the first drive signal. The first drive signal may include a data signal and the drive IC 120 may include a data driver (not shown) that generates a data signal. The first driving signal may include a gate signal. The first driving signal may include a first control signal and may be transmitted to the GIP circuit unit 111 disposed in the inactive area NAA of the display panel 110 to generate a gate signal can do. The drive IC 120 is mounted on a PCB (not shown) connected to a pad of the display panel 110 to transmit a first drive signal to the display panel 110. Here, the dry unit IC 110 is shown as one component, but the present invention is not limited thereto, and a plurality of dry unit ICs 110 may be formed according to the size and resolution of the display panel. Further, the drive IC 120 senses the voltage applied to the organic light emitting diode in the pixel and transmits the sensed voltage to the controller 130.

The control unit 130 may generate the first control signal for controlling the drive IC 120 and supply the first control signal to the drive IC 120. [ The drive IC 120 receiving the first control signal can generate a first drive signal including a data signal and a gate signal and supply the first drive signal to the display panel 110. The first control signal includes a vertical synchronization signal Vsync and a horizontal synchronization signal Vsync for controlling the operation of the drive IC 120 and the video image signal supplied from the external device to the drive IC 120, Hsync, and a clock clk. However, the present invention is not limited thereto.

The controller 130 may generate a second control signal for controlling the test drive IC 150 and supply the second control signal to the test drive IC 150. In addition, the controller 130 may receive luminance information from the test socket 140 to compensate the first control signal. Also, the controller 130 may generate deterioration information corresponding to the luminance information, and may use the deterioration information to compensate the first control signal. Also, compensation of the first control signal may be compensation of the video image signal. The deterioration of the organic light emitting diode can be compensated by compensating the first control signal in response to the deterioration information in the control unit 130. [ The controller 130 receives the information on the pixel voltage applied to the organic light emitting diodes of the pixels from the drive IC 150 and receives the luminance information from the test socket 140 to receive the first control signal You can compensate. Therefore, the control unit 130 for controlling the drive IC 120 generates a second control signal for driving the test drive IC 150 without using a separate control unit for driving the test drive IC 150 .

The test socket 140 may output current information on the current flowing corresponding to the second drive signal. In addition, the test socket 140 can output luminance information corresponding to the current information. A plurality of pixels including the organic light emitting diode are disposed in the test socket 140, and deterioration information can be generated by sensing the brightness of light corresponding to the current flowing in each pixel. To this end, the test socket 140 includes a plurality of pixels, a test pattern in which a current flows through each of the pixels by the second driving signal, and a photosensor for sensing the brightness of light emitted from the test pattern . The test pattern includes a first pixel group, a second pixel group, and a third pixel group that emit a plurality of red pixels, a plurality of green pixels, and a plurality of blue pixels by a second driving signal, And may be disposed so as to detect luminance corresponding to each pixel group. Here, the first pixel group, the second pixel group, and the third pixel group may each include a plurality of pixels. In addition, the pixels included in the first to third pixel groups include sub-pixels emitting red, green, and blue, respectively, and the first pixel group includes sub-pixels emitting red light by the second driving signal And the second pixel group emits green light, and the third pixel group emits blue light. Further, the test pattern may further include a fourth pixel group that emits white light.

In addition, the test pattern may include the first to fourth pixel groups, and a color filter for transmitting red, green, and blue light may be disposed on each pixel group. The organic light emitting diodes in each pixel group emit white light, the first pixel group emits red light by a color filter, the second pixel group emits green light by a color filter, Can emit blue light by a color filter. In addition, the fourth pixel group that emits white light can emit white light by preventing the color filter from being disposed on the upper portion.

In addition, the test pattern may be a pattern of pixels made in at least one place around the display panel 110 in the ledger glass to evaluate the characteristics of the organic light emitting diode in the manufacturing process. Therefore, the test pattern can be made when the pixels are deposited on the display panel 110. [ In addition, the test pattern may use a part of the display panel made in the same environment as the manufacturing environment in which the display panel 110 is made. Therefore, the degree of deterioration generated in the test pattern may be equal to the degree of deterioration generated in the display panel 110. [ Here, the same is not meant to be strictly the same, but may include those which are known to those skilled in the art. Further, the test socket 140 can be mounted on the PCB on which the drive IC 120 is mounted. However, the position of the test socket 140 is not limited to this, and may be disposed in the inactive area NAA of the display panel 110.

The test drive IC 150 receives the second control signal from the controller 130, generates the second drive signal, and transmits the second drive signal to the test socket 140. The test driver IC 150 may transmit a second driving signal to a plurality of pixels included in the test pattern of the test socket 140 to emit light in the test pattern. In addition, the test drive IC 150 drives the photosensors of the test socket 140 to receive light emitted from the test pattern, thereby enabling the test socket 140 to output current information flowing in the test pattern.

FIG. 2A is a plan view showing an embodiment of a printed circuit board on which the control unit shown in FIG. 1 is disposed, and FIG. 2B is a side view showing a cross section taken along line II-II 'in FIG. 2A.

Referring to FIGS. 2A and 2B, the controller 230 may be disposed on the printed circuit board 210. A test drive IC 250 may be disposed on the printed circuit board 210 adjacent to the test socket 240 and the test socket 240.

The test socket 240 is configured such that the test pattern 241 is disposed on the printed circuit board 210 and the photosensor substrate 242 on which the photosensor 243 is disposed above the test pattern 241 is the test pattern 241 So that the photosensor 243 can easily detect the brightness of the light emitted from the test pattern 241. In addition, The test pattern 241 and the photosensor substrate 242 can be protected by the housing 240. Further, it is possible to prevent other light from being transmitted to the photosensor 243 by the housing.

The test pattern 241 may be formed of a plurality of test pixels generated by the same process as a plurality of pixels formed on the display panel 110 shown in FIG. Accordingly, the test pixel can have the same characteristics as the organic light emitting diode formed on the display panel 110, and can accurately compensate the deterioration. In the test pattern 241, only the red sub-pixel can emit light in the first pixel group made up of a plurality of pixels by the second driving signal, and in the second pixel group made up of the plurality of pixels, Only light can be emitted. In addition, only the blue sub-pixel can emit light in the third pixel group composed of a plurality of pixels. In addition, when the fourth pixel group further includes a plurality of pixels, only the white sub-pixels can emit light in the fourth pixel group by the second driving signal. Each pixel of the test pattern 241 emits white light, and a color filter (not shown) is disposed on the upper portion of each pixel so that light corresponding to the color emitted from each pixel group by the color filter Lt; / RTI > The light emitted from each pixel group can have red, green, blue, and white, respectively, so that the degree of deterioration can be determined by color.

A plurality of photosensors 243 on the photosensor substrate 242 disposed on the test pattern 241 may be arranged to correspond to each pixel group of the test pattern 241. [ One photo sensor 243 can sense the luminance of light emitted from one pixel group. The photosensor may be a photodiode.

FIG. 3 is a structural diagram showing an embodiment of the control unit shown in FIG. 1. FIG.

Referring to FIG. 3, the controller 330 receives the brightness information and the pixel voltage from the drive IC 150, calculates the deterioration gain according to the deterioration degree, and compensates the video image signal included in the first control signal. The control unit 330 includes an operation unit 331 for calculating the deterioration gain using the brightness information transmitted from the test socket and a compensation processing unit 332 for compensating the video image signal using the deterioration gain output from the operation unit 331 ).

The operation unit 331 receives the luminance information transmitted from the test socket 140 and the voltage information received from the drive IC 150 and calculates the deterioration gain according to the deterioration degree. The degradation gain can be calculated using a predetermined algorithm.

The compensation processing unit 332 can receive the video image signal RGB and compensate the video image signal RGB by using the deterioration gain calculated by the operation unit 331. [ As a result, deterioration of the organic light emitting diode can be compensated. In addition, when the organic light emitting diode is deteriorated, a residual image may be displayed on the display panel 110, and residual image may not be generated by compensating the deterioration. Here, the residual image due to deterioration may be temporary retention image retention, image sticking, or image persistence. However, the present invention is not limited thereto.

4 is a structural view showing an organic light emitting display according to a second embodiment of the present invention.

4, the organic light emitting display 400 may include a display panel 410, a drive IC 420, a sensing unit 430, and a controller 440. Referring to FIG.

The display panel 410 can be divided into a normal display area 410a for displaying a general image and a test display area 410b for displaying a test image for deterioration evaluation. Since the normal display area 410a and the test display area 410b are disposed on one display panel 410, they may be manufactured through one process for manufacturing the display panel 410 and may be similarly deteriorated . Therefore, the deterioration of the normal display region 410a can be modeled by grasping the degree of deterioration of the test display region 410b.

The drive IC 420 receives a control signal from the controller 440 and outputs a drive signal for driving the display panel 410. The drive IC 420 outputs a drive signal for driving the display panel 410, And a test display section for driving the region. In addition, the drive IC 420 can sense voltage characteristic variations of the organic light emitting diodes included in the pixels in the test display region 410b. Therefore, it is possible to transfer the driving signals to the normal display area and the test display area of the display panel 410 in one drive IC, and not to provide the drive display ICs in the test display area 410b The voltage characteristic variation of the organic light emitting diode included in the pixels of the organic light emitting diode can be sensed. The plurality of drive ICs 420 may be arranged in accordance with the resolution, but each drive IC transmits a drive signal to the normal display region 410a and the test display region 410b, and the organic light emitting diode It is possible to sense the fluctuation of the voltage characteristic of the transistor.

The sensing unit 420 may generate deterioration information by sensing the amount of current flowing in the test display area 410b. The sensing unit 420 may include a plurality of photosensors, and each of the photosensors may sense the luminance of red, green, blue, and white, and may generate current amount information corresponding to the sensed luminance.

The controller 430 generates a control signal and transmits the control signal to the drive IC 420 so that the drive IC 420 outputs a drive signal. The control unit 430 receives the current amount information from the sensing unit 420 to generate deterioration information, and can compensate the control signal according to the deterioration information. The control signal transmitted to the drive IC 420 may include a video image signal and the controller 440 may compensate the deterioration by compensating the video image signal corresponding to the deterioration information transmitted from the sensing unit 430 have.

FIG. 5A is a front view showing one embodiment of a display panel of the organic light emitting display shown in FIG. 4, and FIG. 5B is a front view showing an embodiment of a photosensor substrate disposed on a test display area.

5A and 5B, the display panel 510 may be divided into a normal display area 510a in which a general image is displayed and a test display area 510b in which a test image is displayed. The size of the normal display area 510a in the display panel 510 can be set to 3840 X 2160 and the size of the test display area 510b can be set to 3840 X 100. [ Also, the test display area 510b may be disposed below the normal display area 510a. Here, since the normal display area 510a and the test display area 510b are obtained by arbitrarily dividing one display panel 510 into two areas, the sizes and positions of the normal display area 510a and the test display area 510b are But is not limited thereto.

The test display region 510b may include a plurality of pixel groups having a constant size at the bottom and emitting white W1, red R1, green G1, and blue B1, respectively. At this time, the pixel groups that emit white (W1), red (R1), green (G1), and blue (B1) light from left to right can be arranged in a plurality of pixel groups. However, the present invention is not limited thereto. The plurality of pixel groups are arranged in the order of white (W1), red (R1), green (G1), blue (B1), white (W2), red (R2), green ) May be arranged in that order. Therefore, the degree of deterioration can be grasped for each color. At this time, even if the same red, green, blue, and white light are emitted, the gradation of the first white (W1), red (R1), green (G1), and blue ), Green (G2), and blue (B2) may be different. The first pixel groups can emit light at the highest gray level and the second pixel groups can emit light at the middle gray level. Third pixel groups emitting white (W3), red (R3), green (G3), and blue (B3) may be arranged to the right of the second pixel group, and the third pixel groups may emit light with a low gray level. The reason why the pixel groups are caused to emit light in different gradations is because the efficiency of the organic light emitting diodes may be different depending on the high gradation, the intermediate gradation, and the low gradation. Also, the amount of data usage can be calculated for each gradation. However, the present invention is not limited thereto, and the color and gradation of the pixel groups can be arbitrarily limited by the designer.

The photosensor substrate 530 on which the plurality of photosensors 531 shown in FIG. 5B are arranged may be disposed to face the upper portion of the test display region 510b. Thus, one photosensor 531 of the photosensor substrate 530 can detect the luminance corresponding to one pixel group of the test display region 510b. The photosensor substrate 530 may correspond to the sensing unit of FIG.

6A is a side view showing a first embodiment of an organic light emitting display device shown in FIG. 5A, FIG. 6B is a side view showing a second embodiment of an organic light emitting display device shown in FIG. 6C is a side view showing a third embodiment of an aspect of the organic light emitting diode display shown in FIG. 5A.

6A, when the organic light emitting diode 620a is deposited in the front direction of the display panel 610a and the light is emitted in the front direction, in the test display area 631a of the front surface of the display panel 610a, A photosensor substrate 632a is disposed so that the sensor 633a is in contact with the photosensor substrate 632a and a mask 634a in the form of a housing is provided on the front surface of the photosensor substrate in order to prevent the viewer from interfering with viewing of the image by the photosensor substrate 632a, So that the viewer can not recognize the photosensor substrate 632a.

6B, when the organic galvanizing diode 620b is deposited in the rear direction of the display panel 610b and light is emitted in the front direction, a photosensor 633b is formed on the rear surface of the display panel 610b The photosensor substrate may be arranged so as to be in contact with the substrate. In this case, the mask 634b is disposed on the rear surface of the test display area 631b to block the light emitted from the organic light emitting diode disposed on the rear surface of the test display area 631b, It is possible to prevent the light emitted from the test display area 631b from being recognized.

6C, when the display panel 610c is made to be flexible by vaporizing the plastic organic light emitting diode 620c, the lower portion of the display panel 610c is bent so that the viewer can recognize the test display area I can not let them. In this case, a separate mask may not be used.

7 is a flowchart illustrating a method of compensating deterioration of an OLED display according to an exemplary embodiment of the present invention.

Referring to FIG. 7, the deterioration compensation method of an organic light emitting display device displays a display panel, generates current information corresponding to an amount of current for calculating deterioration information for compensating for deterioration in a displayed display panel, Information can be used to compensate the control signal. The deterioration of the organic light emitting diode can be compensated by compensating the control signal.

When displaying a display panel, one frame section can be divided into a normal display section for displaying a normal image and a test display section for displaying a test image. (S700) The normal display region is divided into a normal display region and a dest display region. In the normal display region, the normal display region is driven and the test display region is driven in the test display region. At this time, the normal display period and the test display period exist within one frame. First, the data signal corresponding to the video image signal and the gate signal are transmitted in the normal display period by the first driving signal, The data signal and the gate signal are transmitted to the test display section by the second driving signal so that the test display section is allowed to emit light. Therefore, one display panel can be divided into a normal display area and a test display area, so that deterioration information generated in the display panel can be grasped by using the organic light emitting diodes manufactured in the same process, .

The brightness information may be generated by sensing the brightness of the display panel in the test display period. (S710) The brightness information of the display panel may be information on the brightness of the test display area of the display panel. It is also possible to sense the pixel voltage applied to the plurality of pixels of the display panel in the test display section. The pixel voltage may be a voltage applied to the organic light emitting diode included in the pixel. Further, the current corresponding to the voltage can be sensed (S720)

In addition, it is possible to compensate the control signal by generating the deterioration information using the luminance information and the pixel voltage. (S730) When compensating the control signal in accordance with the deterioration information, It is possible to estimate the usage amount of data corresponding to the video signal, to calculate the deterioration gain corresponding to the actual usage amount of the test display area and the estimated usage amount, and to compensate the control signal according to the calculated deterioration gain. In addition, deterioration information can be generated using the luminance information without converting the luminance into the current amount information.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. , Separation, substitution, and alteration of the invention will be apparent to those skilled in the art. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: display device
110: Display panel
120:
130: Drive IC
140: Test socket
150: Test drive IC

Claims (14)

A display panel including a plurality of pixels including an organic light emitting diode, the display panel being driven by a first driving signal corresponding to a first control signal;
The display panel includes a drive IC which receives the first control signal and outputs the first drive signal, and senses a pixel voltage applied to the organic light emitting diode from the pixel;
A test socket including a test pattern through which a current flows in response to a second drive signal and outputting brightness information corresponding to a current flowing in the test pattern;
A test drive IC receiving the second control signal and outputting the second drive signal in the test pattern; And
And a controller for generating the first control signal and the second control signal, receiving the brightness information and the pixel voltage, and generating deterioration information to compensate the first control signal. The method according to claim 1,
Wherein the test socket includes a photosensor and outputs the brightness information sensed by the photosensor. The method according to claim 1,
Wherein the test pattern includes at least pixels that individually display R, G, and B, respectively. The method according to claim 1,
Wherein,
An operation unit for calculating a deterioration degree in accordance with the brightness information output from the test socket and the pixel voltage transmitted from the drive IC and calculating a deterioration gain; And
And a compensation processor for compensating a video image signal included in the first control signal corresponding to the deterioration gain. The method according to claim 1,
Wherein the test pattern is a pattern of pixels formed in at least one place around the display panel in the primary glass. A display panel divided into a normal display area for displaying a general image and a test display area for displaying a test image;
A normal display period for driving the normal display region in one frame period by the control signal and a test display period for driving the test display region in response to the control signal and outputting a driving signal for driving the display panel, A drive IC for outputting a drive signal and detecting a pixel voltage applied to the organic light emitting diode included in the pixels included in the test display area;
A sensing unit for generating luminance information corresponding to an amount of current flowing in the test display area; And
A control unit which receives the brightness information from the sensing unit and receives the pixel voltage from the driving IC to generate deterioration information and compensates the control signal in accordance with the deterioration information, And an organic light emitting diode (OLED). The method according to claim 6,
Wherein the sensing unit includes a photosensor for outputting the brightness information. The method according to claim 6,
Wherein a plurality of pixel groups having a predetermined size are arranged in the test display region, and each of the plurality of pixel groups displays at least red, green and blue colors. 9. The method of claim 8,
Wherein the plurality of pixel groups display at least two red, two green, and two blue colors having different gradations. The method according to claim 6,
The control unit
An arithmetic unit for calculating the luminance information output from the sensing unit and the pixel information transmitted from the drive IC and calculating a deterioration gain corresponding to the deterioration degree; And
And a compensation processor for compensating a video image signal included in the first control signal corresponding to the deterioration gain. A deterioration compensation method for compensating deterioration of the display panel by generating deterioration information in a display panel including a plurality of pixels,
Dividing one frame section into a normal display section for displaying a normal image and a test display section for displaying a test image corresponding to the control signal;
Generating luminance information in the test display period and sensing a pixel voltage applied to the pixel; And
And generating deterioration information corresponding to the brightness information and the pixel voltage and compensating the control signal. 12. The method of claim 11,
In the displaying step, the display panel is divided into a normal display area and a dest display area, and drives the normal display area in the normal display period and the test display area in the test display period. 12. The method of claim 11,
Wherein the generating the luminance information comprises sensing luminance of light emitted corresponding to an amount of current flowing through the display panel in the test display period. 12. The method of claim 11,
Wherein the step of compensating the control signal corresponding to the deterioration information includes calculating a deterioration degree corresponding to the brightness information and the pixel voltage, calculating a deterioration gain, and calculating a deterioration compensation method for compensating the control signal corresponding to the deterioration gain .

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