TWI423219B - Organic light emitting diode display and image compensation method thereof - Google Patents

Description

Organic light emitting diode display and image compensation method thereof

The present invention relates to an Organic Light Emitting Diode (OLED) display, and more particularly to an OLED display that can compensate for the component characteristics of an OLED display pixel.

In the modern era of rapid technological development, the display panel using the Organic Light Emitting Diode (OLED) as a pixel unit has existed. Generally, a pixel unit in an OLED display panel has a control circuit and an OLED formed by a plurality of transistors and capacitors. For example, the control circuit is a control circuit including two transistors and a capacitor (2T1C) for responding to the OLED corresponding to the data signal and the scan signal to display the corresponding pixel image.

In the prior art, a low temperature polysilicon (LTPS) process or an amorphous silicon (a-Si) process is used to fabricate an OLED display panel. However, since the transistor fabricated by the LTPS and a-Si process technology has a threshold voltage (Vth) and an electronic mobility (Mobility) inside the transistor is unstable, the conventional OLED display panel will be applied. The display has a Mura effect that shows uneven brightness of the screen.

The invention relates to an image compensation method and an organic application thereof The OLED display of the present embodiment has the advantages of a slight Mura effect and a better display effect compared to the conventional OLED display.

According to the present invention, an image compensation method is proposed, which is applied to an OLED display. The OLED display has a display panel having an M×N pixel array, and M and N are natural numbers greater than 1. The image compensation method comprises: first dividing the N rows of pixel rows in the pixel array to divide the M pixels in the i-th pixel row in the display panel into a group, where a is a natural number greater than 1, and i is less than Or equal to the natural number of N; then turn on the jth group of pixels in the a group of pixels, to calculate the average current of the jth group of pixels, j is a natural number less than or equal to a; then calculate at least one according to the average current Equivalent component parameters; then storing at least one equivalent component parameter in the corresponding memory region M(i, j) in the memory; then accessing the memory region M(i, j) during the first frame period to obtain the at least An equivalent component parameter, and according to which the pixel data corresponding to each pixel of the jth pixel in the i-th pixel row is compensated.

According to the present invention, an OLED display includes a display panel, a display panel control circuit, a memory, and an image compensation circuit. The display panel includes an M×N pixel array, and M and N are natural numbers greater than one. The display panel control circuit is configured to provide a control signal to enable pixels in the display panel. The image compensation circuit is configured to divide the M pixels in the i-th pixel row in the display panel into a group, and control the j-th pixel in the a group of pixels through the display panel control circuit to obtain the average of the j-th pixel. Current. The image compensation circuit calculates at least one equivalent component parameter based on the average current, and stores at least one priority. The component parameters are in the corresponding memory region M(i, j) in the memory. Wherein at least one equivalent component parameter corresponds to the jth group of pixels. In the first frame period, the image compensation circuit accesses the memory area M(i, j) to obtain at least one equivalent component parameter, and accordingly corresponds to each pixel of the jth pixel in the i-th pixel row. The picture data is compensated.

According to the present invention, an image compensation method is proposed, which is applied to an OLED display. The OLED display has a display panel having an M×N pixel array, and M and N are natural numbers greater than 1. The image compensation method includes: first turning on the jth pixel in the ith pixel row in the display panel to calculate a current value of the jth pixel, where i is a natural number less than or equal to N, and j is less than or equal to M a natural number; then calculating at least one equivalent component parameter according to the current value; then storing at least one equivalent component parameter in the corresponding memory region M(i, j) in the memory; then storing in the first frame period Taking a memory area M(i, j) to compensate pixel data corresponding to the jth pixel in the i-th pixel row according to at least one equivalent component parameter; and then accessing the memory in the second frame period The region M(i, j) compensates for pixel data corresponding to adjacent pixels adjacent to the jth pixel in the i-th pixel row according to at least one equivalent component parameter.

According to the present invention, an OLED display is provided, including a display panel, a display panel controller, a memory, and an image compensation circuit. The display panel includes an M×N pixel array, and M and N are natural numbers greater than one. The display panel control circuit is configured to provide a control signal to enable pixels in the display panel. The image compensation circuit is configured to turn on the jth pixel in the ith pixel row of the display panel to obtain a current value of the jth pixel. Image compensation circuit is based on current value At least one equivalent component parameter is calculated, and at least one equivalent component parameter is stored in the corresponding memory region M(i, j) in the memory. The image compensation circuit further accesses the memory region M(i, j) during the first frame period to perform pixel data corresponding to the jth pixel in the i-th pixel row according to at least one equivalent component parameter. make up. The image compensation circuit further accesses the memory region M(i, j) during the second frame period to select adjacent paintings adjacent to the jth pixel in the i-th pixel row according to the at least one equivalent component parameter. The pixel data corresponding to the prime is compensated.

In order to make the above-mentioned contents of the present invention more comprehensible, a preferred embodiment will be described below, and in conjunction with the drawings, a detailed description is as follows:

The Organic Light Emitting Diode (OLED) display of the present embodiment establishes and queries a component-like look-up table (LUT) corresponding to each pixel unit on the OLED display panel. Through a variety of different look-up methods to improve the quality of the display screen of the OLED display, and at the same time consider the reduction of the memory space occupied by the component characteristics look-up table.

First embodiment

The image compensation circuit of this embodiment is configured to divide a pixel on the OLED display panel into a plurality of pixel groups according to a specific manner, and each pixel group corresponds to an element characteristic value stored in a memory region of the component characteristic LUT. The image compensation circuit of this embodiment is updated every other frame screen. This component characteristics are the component characteristic values in the LUT.

Please refer to FIG. 1 , which is a block diagram of an organic light emitting diode display according to a first embodiment of the present invention. The OLED display 1 includes a display panel 10, a display panel control circuit 20, an image compensation circuit 30, and a memory 40. The display panel control circuit 20 is configured to provide a control signal to enable pixels in the display panel 10. For example, the display panel control circuit 20 includes, for example, a timing controller 22, a data driver 24, and a scan driver 26.

The scan driver 26 is configured to provide scan signals Sc(1)-Sc(M) via one of the M scan lines (Scan) to enable one of the specific pixel columns in the display panel 10, and the data driver 24 to receive the image data Sv, and The data signals Sd(1)-Sd(N) are provided via N data lines to write them to the N pixels in the particular pixel column. The timing controller 22 is configured to receive the image data Svi' provided by the image compensation circuit 30 and provide the image data Sv to the data driver 24. The timing controller 22 is further configured to perform timing control on the control driver 24 and the scan driver 26.

The display panel 10 includes, for example, an M×N pixel array, and M and N are natural numbers greater than one. For example, the circuit structure of each pixel in the display panel 10 is as shown in FIG. 2, which is a circuit diagram of each pixel in the display panel 10 of FIG. All of the pixels in display panel 10 have substantially the same structure and operation. Taking the pixel P(x, y) as an example, the driving current Id(x, y) is driven to drive the organic light emitting diode in response to the scanning signals Sc(x), Sc(x+1) and the data signal Sd(y). Body D, wherein the drive current Id(x, y) satisfies: (1) Id(x, y) = kμ(V _{SGI -} Vth) ² = kμ{[VDD - (V_Sd(y) - Vth)] - Vth} ² = kμ(VDD-V_Sd(y)) ² where V_sd(y) is the voltage of the data signal Sd(y), Vth is the threshold voltage of the transistor T, and the voltage VDD is the circuit high voltage, k is Regarding the constant of the element size of the transistor T, μ is the carrier mobility of the transistor T (Mobility). Where x and y are respectively a natural number less than or equal to N and a natural number less than or equal to M.

The image compensation circuit 30 is configured to divide the M pixels in each of the N pixel rows in the display panel 10 into a plurality of groups. For example, the grouping of the display panels 10 is as shown in FIG. In one example, the M pixels in each pixel row are grouped in groups of three to divide each pixel row into a group. a is a natural number less than M, for example, a is equal to M/3. In Fig. 3, any three pixels that are adjacent to each other and are indicated by oblique lines in the same direction belong to the same pixel group.

In more detail, the first pixel (coordinate (1, 1)), the second pixel (coordinate (2, 1)), and the third pixel (coordinate (3,) in the first pixel row in the display panel 10. 1)) are divided into the same group, where the fourth pixel (coordinate (4, 1)), the fifth pixel (coordinate (5, 1)), and the sixth pixel (coordinate (6, 1)) The system is divided into the same group, and the M-2 pixel (coordinate (M-2, 1)), the M-1 pixel (coordinate (M-1, 1)), and the Mth pixel (coordinate) (M, 1)) are divided into the same group. Similarly, the other pixel rows in the display panel 10 also have the same grouping, and details are not described herein.

The image compensation circuit 30 is further configured to turn on each group of pixels through the panel control circuit 20 to obtain an average current corresponding to each group of pixels. The image compensation circuit 30 is further configured to calculate equivalent component parameters corresponding to each group of pixels according to the average currents, and store the equivalent component parameters in the memory. The corresponding memory space in the body 40. For example, this equivalent component parameter is the carrier mobility μ corresponding to each group of pixels.

For example, for the jth pixel group Set(j, i) in the i-th pixel row in the display panel 10, the image compensation circuit 30 controls the data driver 24 to provide the data signal Sd(i) to the display panel 10. The i-th pixel line controls the scan driver 26 to provide the scan signal Sc(q)-Sc(q+2) to control the pixel P(q, i)-P(q+2, i) in response to the data signal Sd ( i) Generate a corresponding drive current Id(q, i)-Id(q+2, i). Where i is a natural number less than or equal to N, j is a natural number less than a, and q is a natural number less than or equal to M-2.

The image compensation circuit 30 obtains the average current Avg_Id thereof based on the drive current Id(q, i) - Id(q + 2, i). In this way, the image compensation circuit 30 can bring the average current Avg_Id, the constant k, the voltage VDD, and the data voltage V_Sd(i) into the equation (1) to obtain an equivalent carrier corresponding to the set of pixels (Set, j, i). Movement rate μ (j, i).

The similar operation is applied to other pixel groups in the display panel 10, so that the image compensation circuit 30 can create each pixel group Set(1, 1)-Set(a, N in the pixel array in the memory 40. And LUT Ta with the corresponding equivalent carrier mobility μ, as shown in Fig. 4.

In one example, image compensation circuit 30 performs the aforementioned operation of establishing LUT Ta, for example, during operation corresponding to the first frame picture. During the operation of the first picture light picture, the image compensation circuit 30 further queries the LUT Ta to obtain the equivalent electron mobility μ corresponding to each pixel group, and accordingly performs image data Svi corresponding to the first frame picture. Data compensation to Improve the screen display quality of the first frame screen.

While in the operation corresponding to the second frame picture, the image compensation circuit 30 performs, for example, an operation of establishing another LUT (not shown). The operation of the image compensation circuit 30 in establishing another LUT is similar to the operation of establishing the LUT Ta, which is different in that it separates the pixel groups of the pixel array of the display panel 10 by another method. As shown in Figure 5. The pixels in the fifth graph are not grouped in a group of three pixels, or a group of two pixels. For example, the first pixel (coordinate (1, 1)) and the second pixel (coordinate (2, 1)) in the first pixel row of the display panel 10 are divided into the same group. Thus, in the second frame picture, the image compensation circuit 30 further queries the other LUT to obtain the equivalent electron mobility μ corresponding to each pixel group, and accordingly performs image data Svi corresponding to the second frame picture. Data compensation to improve the picture quality of the second frame picture.

In one example, one of the first and second frame images is, for example, an odd frame picture displayed in the OLED display 1, and the other one is, for example, an even frame picture displayed in the OLED display 1.

In this embodiment, only the image compensation circuit 30 performs pixel group division on the pixel array of the display panel 10 in accordance with the third and fifth figures. However, the image of the embodiment is described. The method of dividing the pixel group by the compensation circuit 30 is not limited to this. In another example, the image compensation circuit 30 can also divide the pixel groups of the display panel 10 in the first and second frame images via the methods as shown in FIGS. 6 and 7 respectively. The grouping method of adjacent two pixel rows in Fig. 6 and Fig. 7 Not the same.

In the present embodiment, the circuit configuration of the pixels in the display panel 10 is as shown in FIG. 2, but the circuit configuration of the pixels in the display panel 10 is not limited thereto. In another example, the circuit structure of the pixels in the display panel 10 is as shown in FIG. Thus, the drive current Id '(x, y) based satisfies: (2) Id' (x , y) = kμ (V SGI -Vth) 2 = kμ {[VDD-V_Sd (y)] - Vth} 2 = kμ (VDD-V_Sd(y)-Vth) ²

According to the equation (2), when the pixel in the display panel 10 has the circuit structure as shown in FIG. 8, the driving current Id' (x, y) is related to the threshold voltage Vth and the carrier mobility μ. Two equivalent component parameters. Thus, in this example, the image compensation circuit 30 stores two LUTs in the memory 40, one of which is used to map each pixel group to a corresponding equivalent threshold voltage Vth, and the other is used to draw each picture. The prime group is mapped to the corresponding equivalent carrier mobility μ. Thus, the image compensation circuit 30 can compensate the data voltage V_sd(i) according to the equivalent threshold voltage Vth and the equivalent carrier mobility μ stored in the two LUTs.

In another example, assume that each pixel in display panel 10 has z grayscale values G1-Gz. Corresponding to the case where each pixel in the display panel 10 is driven by a data voltage corresponding to the same grayscale value Gw, the image compensation circuit 30 measures the driving current Id corresponding to each pixel and establishes a mapping pixel. The LUT T_w to the corresponding drive current is in the memory 40. Where w is a natural number greater than or equal to 1 and less than or equal to z, LUT T_w has M×N storage spaces, respectively stored under the driving condition that the data voltage corresponds to the grayscale value Gw, and each pixel data P(1, 1) -P(M, N) drive current. In other words, the image compensation circuit 30 stores z with M×N stores. The LUT T_1-T_z of the storage space is in the memory 40.

Second embodiment

The image compensation circuit of this embodiment is configured to divide a pixel on the OLED display panel into a plurality of pixel groups according to a specific manner, and each pixel group corresponds to an element characteristic value stored in a memory region of the component characteristic LUT. Corresponding to the different frame pictures, the image compensation circuit of the embodiment is used to refer to the component characteristic values of different pens to compensate the data signals corresponding to the pixels of the same position.

Please refer to FIG. 9 , which is a schematic diagram of pixel division of a pixel array by an image compensation circuit according to a second embodiment of the present invention. Different from the first embodiment, the image compensation circuit (not shown) of the embodiment is used to group the M' pixels in the N' pixel rows in the pixel array in groups of two. To divide each pixel row into groups of a', a' is a natural number less than M. For example, a' is equal to M'/2. In Fig. 9, two pixels, which are indicated by any two diagonal lines adjacent to each other and in the same manner, belong to the same pixel group.

Corresponding to the manner as shown in FIG. 9, the image compensation circuit of the embodiment stores the corresponding LUT Ta' in the memory for mapping the pixel groups in the pixel array to the corresponding carrier mobility, such as Figure 10 shows.

Different from the first embodiment, the image compensation circuit of the embodiment corresponds to different frame pictures, and the different pen carrier movement rates stored in the LUT Ta' are selected to compensate the data signals.

For example, when the received image data Svi' corresponds to the first frame In the picture, the image compensation circuit selects the carrier mobility μ (j', i') stored in the LUT Ta' to the two of the pixel groups Set' (j', i') in the image data Svi'. The pixel data corresponding to the pixels P' (r, i') and P' (r+1, i') are compensated. Where i' is a natural number less than or equal to N', j' is a natural number less than or equal to a', and r is a natural number less than or equal to M'-1.

When the received input image data Svi' corresponds to the second frame screen, the image compensation circuit selects the carrier mobility μ (j'+1, i') stored in the LUT Ta' to the image data Svi' The pixel data corresponding to the two pixels P' (r, i') and P' (r+1, i') in the set group '' (j', i') are compensated.

When the received input image data Svi' corresponds to the third frame screen, the image compensation circuit selects the carrier mobility μ (j'-1, i') stored in the LUT Ta' to the image data Svi' The pixel data corresponding to the two pixels P' (r, i') and P' (r+1, i') in the set group '' (j', i') are compensated.

For example, the first, second, and third frame screens are, for example, three consecutive frame pictures arranged in any order.

In this embodiment, only the image compensation circuit selects the carrier mobility μ (j' stored in the LUT Ta' corresponding to the first, second, and third frame images in the received image data Svi'. i'), μ (j'+1, i') and μ (j'-1, i') compensate for the data signals corresponding to the pixels in the set of groups [''j', i') The case is exemplified. However, the image compensation circuit of this embodiment is not limited to performing this compensation operation.

In another example, when the received image data Svi' corresponds to the first In the first to fifth frame screens, the image compensation circuit selects the carrier mobility μ (j', i'), μ (j'+1, i'), and μ (j'-1, respectively, stored in the LUT Ta'. i'), μ (j', i'+1) and μ (j', i'-1) correspond to the pixels in the image data Svi' and the pixel set Set' (j', i') The picture data is compensated. The first to fifth frame screens are five frame images arranged in an arbitrary order.

Referring to FIG. 11, a flow chart of an image compensation method according to the first and second embodiments of the present invention is shown. Since the various flow steps of the image compensating method of the first and second embodiments of the present invention have been described in the foregoing description, the details are not described herein.

In the OLED display of the first and second embodiments of the present invention, the pixels on the display panel are divided into a plurality of pixel groups according to a specific manner by using an image compensation circuit, and each pixel group is stored in the component characteristic LUT. The component characteristic values of one of the memory regions correspond to each other. The image compensation circuit is further configured to perform data compensation on the input image data according to the component characteristic values stored in the LUT. In this way, compared with the conventional OLED display, the foregoing first and second embodiments of the present invention can compensate for the instability of the threshold voltage and the carrier mobility of the transistor in the process technology, and can avoid the OLED display. The Mura effect occurs on the display screen and the display screen quality of the OLED display can be improved.

In addition, in the first and second embodiments of the present invention, the pixels on the OLED display panel are divided into a plurality of pixel partitions by the image compensation circuit, and the storage element characteristics LUT correspond to the respective pixel partitions. In other words The OLED display of the first and second embodiments of the present invention can apply an LUT (corresponding to all pixel groups) having a small memory capacity to perform data compensation for all pixels in the OLED display panel. In this way, the OLED display of the first and second embodiments of the present invention has the advantages of smaller memory capacity and lower memory cost.

Third embodiment

The image compensation circuit of the embodiment is configured to store the component characteristic value LUT in the memory, and the LUT is used to map each pixel in the OLED display panel to correspond to a component characteristic value data. Corresponding to the different frame pictures, the image compensation circuit of the embodiment is used to refer to the component characteristic values of different pens to compensate the data signals corresponding to the pixels of the same position.

Please refer to FIG. 12, which is a schematic diagram showing the compensation operation of the image compensation circuit according to the third embodiment of the present invention. Different from the first embodiment and the second embodiment, the image compensation circuit of the embodiment does not directly divide the pixel array on the display panel in the OLED display, and directly establishes a component characteristic value corresponding to each pixel to the pixel array. The LUTTb of each corresponding pixel.

For example, the display panel of the OLED display of the present embodiment includes a pixel array of M"×N", and M" and N" are natural numbers greater than 1. In this example, the LUT Tb stores M"×N" pen component characteristic value data, which respectively correspond to corresponding pixels in the display panel, as shown in FIG. For example, the component characteristic value data stored in the LUT Tb is a carrier mobility μ (x', y') corresponding to each pixel, and x' and y' are respectively less than or equal to M" and A natural number less than or equal to N".

The image compensation circuit of the embodiment is further configured to select the same carrier mobility data to correspond to different pixels in the image data Svi" when receiving the image data Svi corresponding to different frame images. The pixel data is compensated.

For example, when the received image data Svi" corresponds to the first frame frame, the image compensation circuit selects the carrier mobility μ (x', y') stored in the LUT Tb for the image data Svi" The pixel data corresponding to the pixel P" (x', y') is compensated. When the input image data Svi" is received corresponding to the second frame picture, the image compensation circuit selects the carrier mobility μ (x ', y') compensates for the pixel data corresponding to one adjacent pixel of the pixel P" (x', y') in the image data Svi". In one example, this neighboring pixel is a pixel P" (x'+1, y').

In an example, when the input image data Svi" corresponds to the second frame picture, the image compensation circuit is further configured to select the corresponding bit in the LUT Tb corresponding to the adjacent pixel P" (x'+1, y') The sub-movement rate μ (x'+1, y') compensates for the pixel data of the pixel P" (x', y') in the image data Svi".

In the present embodiment, the image compensation circuit only pairs the adjacent pixels P" with the carrier mobility μ (x', y') when the input image data Svi" corresponds to the second frame picture. The case where the corresponding pixel data is compensated by x'+1, y') is taken as an example. However, the image compensation circuit of the present embodiment is not limited thereto. In another example, when the input image data Svi" corresponds to the second frame picture, the image compensation circuit can further match the adjacent pixel P" (x' with the carrier mobility μ (x', y'). +1, y'+1), P" (x'+1, y'-1), P" (x', y'+1), P" (x', y'-1), P" (x'-1, y'+1), P" (x'-1, y') and P" (x'-1, y'-1) corresponds to one of the pixel data to compensate.

In this example, the image compensation circuit further corresponds to the adjacent pixels P" (x'+1, y'+1), P" (x) when the input image data Svi" corresponds to the second frame picture. '+1, y'-1), P" (x', y'+1), P" (x', y'-1), P" (x'-1, y'+1), P" One of (x'-1, y') and P" (x'-1, y'-1) corresponds to the carrier mobility μ (x'+1, y'+1), μ (x'+ 1, y'-1), μ (x', y'+1), μ (x', y'-1), μ (x'-1, y'+1), μ (x'-1, y') and μ (x'-1, y'-1) compensate for the pixel data corresponding to the pixel P" (x', y').

Please refer to FIG. 13 , which is a flowchart of an image compensation method according to a third embodiment of the present invention. The various flow steps of the image compensation method according to the third embodiment of the present invention have been described in the foregoing description, and no further description is made herein.

In the OLED display of the third embodiment of the present invention, the component characteristic value data LUT is generated through the image compensation circuit for mapping each display pixel in the display panel of the OLED display to the corresponding one of the pen component characteristic value data. The image compensation circuit of the embodiment is further configured to compensate pixel data corresponding to different pixels in different frame periods according to the same piece of component characteristic value data. Therefore, compared with the conventional OLED display, the third embodiment of the present invention can compensate for the instability of the threshold voltage and the carrier mobility of the transistor in the process technology, and can avoid the Mura effect of the display screen of the OLED display. It can improve the display quality of OLED displays.

In addition, the OLED display of the third embodiment of the present invention has a subcritical conduction region for each pixel (Sub- by alternately referring to different pen component characteristic values to compensate pixel parameters corresponding to the respective pixels. Threshold Region) The advantage of data compensation.

In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

1‧‧‧Organic LED display

10‧‧‧ display panel

20‧‧‧Display panel control circuit

22‧‧‧Timing controller

24‧‧‧Data Drive

26‧‧‧Scan Drive

30‧‧‧Image compensation circuit

40‧‧‧ memory

T‧‧‧O crystal

D‧‧‧Organic Luminescent Diodes

P(x, y)‧‧‧ pixels

1 is a block diagram of an organic light emitting diode display in accordance with a first embodiment of the present invention.

Fig. 2 is a circuit diagram showing the pixels in the display panel 10 of Fig. 1.

FIG. 3 is a schematic diagram showing the operation of the image compensation circuit 30 of FIG. 1.

FIG. 4 is a schematic view showing the look-up table Ta of the present embodiment.

FIG. 5 is another schematic diagram showing the operation of the image compensation circuit 30 of FIG. 1.

FIG. 6 is a schematic diagram showing still another operation performed by the image compensation circuit 30 of FIG. 1.

FIG. 7 is still another schematic diagram of the operation performed by the image compensation circuit 30 of FIG. 1.

FIG. 8 is another circuit diagram of the pixels in the display panel 10 of FIG. 1.

FIG. 9 is a schematic diagram showing pixel division of a pixel array by an image compensation circuit according to a second embodiment of the present invention.

FIG. 10 is a schematic view showing the look-up table Ta' of the embodiment.

11 is a flow chart showing an image compensation method according to the first and second embodiments of the present invention.

FIG. 12 is a schematic diagram showing the look-up table Tb according to the embodiment.

FIG. 13 is a flow chart showing an image compensation method according to a third embodiment of the present invention.

(a)-(e)‧‧‧Operating steps

Claims (38)

An image compensation method is applied to an Organic Light Emitting Diode (OLED) display, the OLED display having a display panel having an M×N pixel array, M and N being greater than The image compensation method includes: (a) dividing the M pixels in an i-th pixel row in the display panel into a group, a is a natural number greater than 1, and i is a natural value less than or equal to N The step (a) includes: (a1) corresponding to a c-frame period, dividing the i-th pixel row such that each of the a group of pixels substantially includes b pixels, c is a natural number, b is a natural number greater than 1; (b) turning on a jth group of pixels in the a group of pixels to generate an average current of the jth group of pixels, j being a natural number less than or equal to a; (c) according to The average current obtains at least one equivalent component parameter; (d) storing the at least one equivalent component parameter in a corresponding memory region M(i,j) in a memory; and (e) in a first frame Accessing the memory area M(i,j) during the period to obtain the at least one equivalent component parameter, and according to the pixel of the jth group in the ith pixel row The pixels corresponding to the pixels are compensated. The image compensation method according to claim 1, further comprising: (e') according to the at least one equivalent component parameter pair and a j-1 in the i-th pixel row in a second frame period The pixel data corresponding to each pixel of the group of pixels is compensated. The image compensation method of claim 1, further comprising: (e"), in a third frame period, according to the at least one equivalent component parameter pair and a j+1 in the i-th pixel row The pixel data corresponding to each pixel of the group of pixels is compensated. The image compensation method of claim 1, further comprising: (e'") in the fourth frame period, according to the at least one equivalent component parameter pair and an i+1th pixel row The pixel data corresponding to each pixel of the j group of pixels is compensated. The image compensation method of claim 1, further comprising: (e"") in a fifth frame period according to the at least one equivalent component parameter pair and an i-1th pixel row The pixel data corresponding to each pixel of the j group of pixels is compensated. The image compensation method of claim 1, wherein the step (a) further comprises: (a2) corresponding to a c+1 frame period, dividing the i-th pixel row so that the a group of pixels One of the first group of pixels includes b-1 pixels, and the a-1 group of pixels in the a group of pixels substantially includes b pixels. An image compensation method is applied to an Organic Light Emitting Diode (OLED) display, the OLED display having a display panel having an M×N pixel array, M and N being greater than The natural number of 1, the image compensation method includes: (a) dividing the M pixels in an i-th pixel row in the display panel into a group, a is a natural number greater than 1, and i is a natural number less than or equal to N, wherein step (a) includes: (a1 ') corresponds to a c-frame period, if i is an odd number, the i-th pixel row is divided such that each a group of pixels substantially includes b pixels, c is a natural number, and b is a natural number greater than 1. And (a2') corresponds to the period of the cth frame, if i is an even number, the i-th pixel row is divided such that one of the first group of pixels in the a group of pixels includes b-1 pixels, After a group of pixels, the a-1 group of pixels substantially includes b pixels; (b) turns on a jth group of pixels in the a group of pixels to generate an average current of the jth group of pixels, j is a natural number less than or equal to a; (c) obtaining at least one equivalent component parameter according to the average current; (d) storing the at least one equivalent component parameter in a memory corresponding to one of the memory regions M(i, j); and (e) accessing the memory region M(i,j) during a first frame period to obtain the at least one equivalent component parameter, and according to the jth in the i-th pixel row The pixel data corresponding to each pixel of the group of pixels Compensated. The image compensation method of claim 7, wherein the step (a) comprises: (a3') corresponding to a c+1 frame period, if i is an odd number, dividing the i-th pixel line, so that the One of the first group of pixels in the a group of pixels includes b-1 pixels, and the a-1 group of pixels in the a group of pixels substantially includes b pixels; (a4') corresponds to the period of the c+1th frame, and if i is an even number, the i-th pixel row is divided such that each of the a group of pixels substantially includes b pixels. An organic light emitting diode (OLED) display comprises: a display panel comprising an M×N pixel array, M and N being a natural number greater than 1; and a display panel control circuit for Providing a control signal to enable a pixel in the display panel; a memory; and an image compensation circuit for dividing the M pixels in an i-th pixel row of the display panel into a group and transmitting the panel through the display panel The control circuit turns on a jth group of pixels in the a group of pixels to obtain an average current of the jth group of pixels, and the image compensation circuit further obtains at least one equivalent component parameter according to the average current, and stores the at least An equivalent component parameter is corresponding to one of the memory regions M(i, j) in the memory; wherein the at least one equivalent component parameter corresponds to the jth group of pixels; wherein, in a first frame During the period, the image compensation circuit accesses the memory area M(i, j) to obtain the at least one equivalent component parameter, and accordingly draws a picture corresponding to each pixel of the jth group of pixels in the i-th pixel row. Compensation for the data; in a period of c frame, The compensation circuit like the lines dividing the i-th pixel row, such that each of the pixel groups a pixel essentially comprises b, c is a natural number, b is a natural number of greater than 1. An OLED display according to claim 9 of the patent application, The at least one equivalent component parameter includes an equivalent electron mobility and a transistor threshold voltage. The OLED display of claim 9, wherein the image compensation circuit is in accordance with the at least one equivalent component parameter pair and the j-1th group in the i-th pixel row in a second frame period The pixel data corresponding to each pixel of the pixel is compensated. The OLED display of claim 9, wherein in a third frame period, the image compensation circuit is based on the at least one equivalent component parameter pair and the j+1th group in the ith pixel row The pixel data corresponding to each pixel of the pixel is compensated. The OLED display of claim 9, wherein in a fourth frame period, the image compensation circuit is based on the at least one equivalent component parameter pair and a jth group in an i+1th pixel row The pixel data corresponding to each pixel of the pixel is compensated. The OLED display of claim 9, wherein in a fifth frame period, the image compensation circuit is based on the at least one equivalent component parameter pair and an i-th pixel row in a j-th group The pixel data corresponding to each pixel of the pixel is compensated. The OLED display of claim 9, wherein in a c+1 frame period, the image compensation circuit divides the i-th pixel row such that one of the a group of pixels is first grouped The prime includes b-1 pixels, and the a-1 group of pixels in the a group of pixels substantially includes b pixels. An Organic Light Emitting Dodie (OLED) display comprising: a display panel comprising an M×N pixel array, M and N being a natural number greater than 1; a display panel control circuit for providing a control signal to enable a pixel in the display panel; a memory; An image compensation circuit is configured to divide the M pixels in an i-th pixel row of the display panel into a group, and use the display panel control circuit to turn on a j-th pixel in the a-group of pixels to obtain An average current of the jth group of pixels, the image compensation circuit further obtaining at least one equivalent component parameter according to the average current, and storing the at least one equivalent component parameter in a corresponding one of the memory regions M(i) And j); wherein the at least one equivalent component parameter corresponds to the jth group of pixels; wherein, during a first frame period, the image compensation circuit accesses the memory region M(i,j) The at least one equivalent component parameter, and according to the pixel data corresponding to each pixel of the jth group of pixels in the i-th pixel row; wherein the image compensation is performed during a c-frame period The circuit divides the i-th pixel row when i is an odd number, so that each of the a group of pixels Qualitatively includes b pixels, and divides the i-th pixel row when i is even, such that one of the first group of pixels in the a group of pixels includes b-1 pixels, after the a group of pixels The a-1 group of pixels essentially includes b pixels; wherein c is a natural number and b is a natural number greater than one. The OLED display of claim 16, wherein the image compensation circuit is odd in i during a c+1 frame period Dividing the i-th pixel row such that one of the first group of pixels of the a group of pixels includes b-1 pixels, and dividing the i-th pixel row when i is even, such that each of the a group of pixels Essentially includes b pixels. An image compensation method is applied to an Organic Light Emitting Diode (OLED) display, the OLED display having a display panel having an M×N pixel array, M and N being greater than 1 The image compensation method includes: (a) turning on a jth pixel in an i-th pixel row of the display panel to generate a current value of the j-th pixel, i being less than or equal to N a natural number, j is a natural number less than or equal to M; (b) obtaining at least one equivalent component parameter according to the current value; (c) storing the at least one equivalent component parameter in a memory corresponding to one of the memory regions M(i,j); (d) accessing the memory region M(i,j) during a first frame period to match the at least one equivalent component parameter pair with the i-th pixel row Compensating the pixel data corresponding to the j pixels; and (e) accessing the memory region M(i,j) during a second frame period, according to the at least one equivalent component parameter pair In the i pixel row, the pixel data corresponding to one adjacent pixel of the jth pixel is compensated. The image compensation method of claim 18, wherein the adjacent pixel is one of the j+1th pixels in the ith pixel row. The image compensation method of claim 18, wherein the adjacent pixel is one of the j-1th pixels in the i-th pixel row. For example, the image compensation method described in claim 18, The adjacent pixel is one of the jth pixels in an i+1th pixel row. The image compensation method of claim 18, wherein the adjacent pixel is one of the j+1th pixels in the i+1th pixel row. The image compensation method of claim 18, wherein the adjacent pixel is one of the j-1th pixels in the i+1th pixel row. The image compensation method of claim 18, wherein the adjacent pixel is one of the jth pixels in the i-1th pixel row. The image compensation method of claim 18, wherein the adjacent pixel is one of the j+1th pixels in the i-1th pixel row. The image compensation method of claim 18, wherein the adjacent pixel is one of the j-1th pixels in the i-1th pixel row. The image compensation method of claim 18, wherein the step (e) further comprises: during the second frame period, accessing a memory area of the memory corresponding to the adjacent pixel, The pixel data corresponding to the jth pixel in the i-th pixel row is compensated according to the corresponding at least one equivalent component parameter. An organic light emitting diode (OLED) display comprises: a display panel comprising an M×N pixel array, M and N being a natural number greater than 1; and a display panel control circuit for Providing a control signal to enable a pixel in the display panel; a memory; and an image compensation circuit for turning on an i-th pixel in the display panel One of the jth pixels in the row to obtain a current value of the jth group of pixels, the image compensation circuit further obtaining at least one equivalent component parameter according to the current value, and storing the at least one equivalent component parameter Corresponding to one memory area M(i,j) in the memory; wherein the image compensation circuit further accesses the memory area M(i,j) during a first frame period, according to the at least one The component parameter compensates for the pixel data corresponding to the jth pixel in the i-th pixel row; wherein the image compensation circuit accesses the memory region M (i, j) during a second frame period And compensating pixel data corresponding to one adjacent pixel of the jth pixel in the i-th pixel row according to the at least one equivalent component parameter. The OLED display of claim 28, wherein the at least one equivalent component parameter comprises an equivalent electron mobility and a transistor threshold voltage. The OLED display of claim 28, wherein the adjacent pixel is one of the j+1th pixels in the ith pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the j-1th pixels in the i-th pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the jth pixels in an i+1th pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the j+1th pixels in the i+1th pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the j-1th pixels in the i+1th pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the jth pixels in the i-1th pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the j+1th pixels in the i-1th pixel row. The OLED display of claim 28, wherein the adjacent pixel is one of the j-1th pixels in the i-1th pixel row. The OLED display of claim 28, wherein the image compensation circuit further accesses a memory area corresponding to the adjacent pixel in the memory during the first frame period, according to at least An equivalent component parameter compensates for the pixel data corresponding to the jth pixel in the i-th pixel row.