Organic light-emitting display panel, and display device and driving method therefor

Abstract

The present application discloses an organic light-emitting display panel (100), and a display device (10) and a driving method therefor. The organic light-emitting display panel (100) comprises a first power supply voltage layer (110), a second power supply voltage layer (120), and a plurality of pixels (130). Both the first power supply voltage layer (110) and the second power supply voltage layer (120) are grid-shaped. The first power supply voltage layer (110) comprises a plurality of first frame portions (111). The second power supply voltage layer (120) comprises a plurality of second frame portions (121). The second frame portions (121) are in one-to-one correspondence with the first frame portions (111). The pixels (130) are arranged, in a one-to-one correspondence manner, in areas defined by the second frame portions (121).

Description

Organic light emitting display panel, display device and driving method thereof

[0001] The present application claims priority to the Chinese patent application No. 2024104741919, filed on April 19, 2024, entitled "Organic light emitting display panel, display device and driving method thereof", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of display, in particular to an organic light emitting display panel, a display device and a driving method thereof. BACKGROUND

[0003] The statements herein are provided only to enhance understanding of the present application and are not necessarily intended to constitute the prior art.

[0004] OLED (Organic-Light-Emitting Diode) and LCD (Liquid-Crystal-Display) have different light emitting principles. OLED display technology has the advantages of self-emission, wide viewing angle, almost infinite contrast, low power consumption and extremely high response speed, and has been widely used in terminal devices.

[0005] At present, in the OLED panel, the light emitting unit of the pixel is provided with high voltage (VDD voltage) and low voltage (VSS voltage) by the power chip, and the structure for conducting low voltage is a film layer structure laid in the OLED panel, only the periphery is connected with the power chip, the conductive path is single, which is equivalent to resistance series, the resistance is superimposed, the farther the pixel, the greater the resistance, the greater the voltage difference, which causes the VSS voltage received by the light emitting unit of different pixels to be different, so that the uniformity of the display panel is poor. When the threshold voltage compensation of the driving switch in the pixel is carried out, the driving switch in all pixels usually needs to be compensated, which leads to a long overall compensation time. SUMMARY

[0006] The purpose of the embodiments of the present application is to provide an organic light emitting display panel, a display device and a driving method thereof, which can improve the uniformity of the organic light emitting display panel, reduce the number of detections and compensations of the driving switch in the pixel, and shorten the overall compensation time of the organic light emitting display panel.

[0007] The application discloses an organic light-emitting display panel, which comprises a first power voltage layer, a second power voltage layer and a plurality of pixels, the first power voltage layer comprises at least one first input end and a plurality of first output ends, a plurality of the first output ends are electrically connected one by one with driving switches in a plurality of the pixels, and high voltage is output to the driving switches; the second power voltage layer comprises at least one second input end and a plurality of second output ends, a plurality of the second output ends are electrically connected one by one with light-emitting units in a plurality of the pixels, and low voltage is output to the light-emitting units; wherein the first power voltage layer and the second power voltage layer are arranged at different layers, the first power voltage layer and the second power voltage layer are both in a grid shape, the first power voltage layer comprises a plurality of first frame parts, the second power voltage layer comprises a plurality of second frame parts, the second frame parts are arranged one by one with the first frame parts, and the pixels are arranged one by one in the areas surrounded by the second frame parts.

[0008] The embodiment of the present application further discloses a display device, which comprises an external compensation circuit and an organic light-emitting display panel, the organic light-emitting display panel comprises a first power voltage layer, a second power voltage layer and a plurality of pixels, the first power voltage layer comprises at least one first input end and a plurality of first output ends, the plurality of first output ends are electrically connected to driving switches in the plurality of pixels one by one, and high voltage is output to the driving switches; the second power voltage layer comprises at least one second input end and a plurality of second output ends, the plurality of second output ends are electrically connected to light-emitting units in the plurality of pixels one by one, and low voltage is output to the light-emitting units; wherein the first power voltage layer and the second power voltage layer are arranged at different layers, the first power voltage layer and the second power voltage layer are both in a grid shape, the first power voltage layer comprises a plurality of first frame parts, the second power voltage layer comprises a plurality of second frame parts, the second frame parts are arranged one by one corresponding to the first frame parts, and the pixels are arranged one by one in the areas surrounded by the second frame parts; the pixel in the organic light-emitting display panel comprises a first scan line, a second scan line, a data line, a sensing line, a first switch, a second switch, a driving switch, a capacitor and a light-emitting unit, the control end of the first switch is connected to the first scan line, the input end of the first switch is connected to the data line, the output end of the first switch is connected to the control end of the driving switch, the input end of the driving switch is connected to the first output end of the first power voltage layer, one end of the driving switch is connected to one end of the light-emitting unit, the other end of the light-emitting unit is connected to the second output end of the second power voltage layer; one end of the capacitor is connected to the output end of the first switch, and the other end of the capacitor is connected to the output end of the driving switch; the control end of the second switch is connected to the second scan line, the input end of the second switch is connected to the output end of the driving switch, and the output end of the second switch is connected to the sensing line; the external compensation circuit comprises a compensation module, a reference voltage line, a third switch and a fourth switch, the sensing line is connected to the reference voltage line through the third switch, the sensing line is connected to one end of the compensation module through the fourth switch, and the other end of the compensation module is connected to the data line.

[0009] The embodiment of the application further discloses a driving method of a display device, the display device comprising an external compensation circuit and an organic light-emitting display panel, the organic light-emitting display panel comprising a first power voltage layer, a second power voltage layer and a plurality of pixels, the first power voltage layer comprising at least one first input end and a plurality of first output ends, the plurality of first output ends being electrically connected to driving switches in the plurality of pixels one by one, and outputting high voltage to the driving switches; the second power voltage layer comprising at least one second input end and a plurality of second output ends, the plurality of second output ends being electrically connected to light-emitting units in the plurality of pixels one by one, and outputting low voltage to the light-emitting units; wherein the first power voltage layer and the second power voltage layer are arranged at different layers, the first power voltage layer and the second power voltage layer are both in a grid shape, the first power voltage layer comprises a plurality of first frame parts, the second power voltage layer comprises a plurality of second frame parts, the second frame parts are arranged one by one corresponding to the first frame parts, and the pixels are arranged one by one in regions surrounded by the second frame parts;

[0010] The pixel in the organic light-emitting display panel comprises a first scan line, a second scan line, a data line, a sensing line, a first switch, a second switch, a driving switch, a capacitor and a light-emitting unit, the control end of the first switch is connected with the first scan line, the input end of the first switch is connected with the data line, the output end of the first switch is connected with the control end of the driving switch, the input end of the driving switch is connected with the first output end of the first power voltage layer, one end of the light-emitting unit is connected with the output end of the driving switch, the other end of the light-emitting unit is connected with the second output end of the second power voltage layer; one end of the capacitor is connected with the output end of the first switch, the other end of the capacitor is connected with the output end of the driving switch; the control end of the second switch is connected with the second scan line, the input end of the second switch is connected with the output end of the driving switch, and the output end of the second switch is connected with the sensing line; the external compensation circuit comprises a compensation module, a reference voltage line, a third switch and a fourth switch, the sensing line is connected with the reference voltage line through the third switch, the sensing line is connected with one end of the compensation module through the fourth switch, and the other end of the compensation module is connected with the data line;

[0011] The driving method comprises the following steps:

[0012] Optically detecting the organic light-emitting display panel to determine whether the uniformity of the organic light-emitting display panel exceeds a preset value;

[0013] When the uniformity of the organic light-emitting display panel exceeds the preset value, only compensating the threshold voltage of the driving switch in the low gray scale pixel; and

[0014] When the uniformity of the organic light emitting display panel is lower than a preset value, the threshold voltages of the driving switches in all pixels are compensated.

[0015] The first power voltage layer and the second power voltage layer providing high voltage and low voltage for the light emitting unit in the pixel are both made into a grid shape in the embodiments of the present application, so that the first power voltage layer forms a plurality of first frame parts arranged around the pixel, and the second power voltage layer forms a plurality of second frame parts arranged around the pixel. At this time, the first power voltage layer and the second power voltage layer are equivalent to a plurality of connection paths, equivalent to a large number of resistances in parallel. When conducting electricity to the pixel, the conducting path will select the shortest path to avoid passing through all the traces at the same time. Therefore, the VDD voltage received by the light emitting unit in each pixel has small difference, and the VSS voltage received by the light emitting unit in each pixel has small difference, thereby facilitating to improve the uniformity of the organic light emitting display panel. When detecting and compensating the organic light emitting display panel, if the uniformity of the organic light emitting display panel is high, only part of the pixels need to be compensated, thereby reducing the number of pixels to be detected and compensated, and shortening the compensation time of the whole organic light emitting display panel. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings included are intended to provide a further understanding of the embodiments of the present application, and constitute a part of the specification, serve to explain the principles of the present application together with the text. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0017] FIG. 1 is a schematic diagram of a display device according to an embodiment of the present application;

[0018] FIG. 2 is a schematic diagram of an analog circuit of an organic light emitting display panel according to an embodiment of the present application;

[0019] FIG. 3 is a schematic diagram of a planar organic light emitting display panel according to an embodiment of the present application;

[0020] FIG. 4 is a flow chart of a driving method of a display device according to an embodiment of the present application;

[0021] FIG. 5 is a further method flow chart based on FIG. 4;

[0022] FIG. 6 is another further method flow chart based on FIG. 4;

[0023] FIG. 7 is another further method flow chart based on FIG. 4. DETAILED DESCRIPTION

[0024] It is to be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting, but is intended to be representative of all alternatives. Many alternatives are possible and equivalents are intended to be encompassed by the scope of the claims.

[0025] In addition, unless specifically stated otherwise and / or limited in context, "adjacent" or "connected" or "connected to" or "connected with" or "connected by" can be understood generally as being either fixedly connected or releasably connected, or as being integrally connected, or as being either mechanically connected or electrically connected, or as being directly connected or indirectly connected via intervening medium, or as being internally connected between two elements. Those of ordinary skill in the art will appreciate that the above terms, in context, can be interpreted to have their specific meaning.

[0026] The application will be further described with reference to the drawings and optional embodiments.

[0027] As shown in FIG. 1, the display device 10 provided by the embodiments of the present application includes an external compensation circuit 200 and an organic light-emitting display panel 100, the organic light-emitting display panel 100 including a plurality of arrayed pixels 130, each pixel 130 including a first scan line scan1, a second scan line scan2, a data line data, a sensing line sen, a first switch T1, a second switch T2, a drive switch DT, a capacitor cst, and a light-emitting unit OLED.

[0028] The control end of the first switch T1 is connected with the first scan line scan1, the input end of the first switch T1 is connected with the data line data, and the output end of the first switch T1 is connected with the control end of the drive switch DT.

[0029] The input end of the drive switch DT receives a VDD voltage, the output end of the drive switch DT is connected with one end of the light-emitting unit OLED, and the other end of the light-emitting unit OLED receives a VSS voltage. One end of the capacitor cst is connected with the output end of the first switch T1, and the other end of the capacitor cst is connected with the output end of the drive switch DT.

[0030] The control end of the second switch T2 is connected with the second scan line scan2, the input end of the second switch T2 is connected with the output end of the drive switch DT, and the output end of the second switch T2 is connected with the sensing line sen.

[0031] The external compensation circuit 200 comprises a compensation module 210, a reference voltage line 220, a third switch T3 and a fourth switch T4, the sensing line sen is connected with the reference voltage line 220 through the third switch T3, the sensing line sen is connected with one end of the compensation module 210 through the fourth switch T4, and the other end of the compensation module 210 is connected with the data line data.

[0032] In the detection stage of the driving switch DT in the pixel 130, the first scan line scan1 needs to be turned on, the first switch T1 is opened, so that the first switch T1 outputs the data voltage, and at the same time, the third switch T3 is opened to rewrite the voltage on the sensing line sen into the reference voltage; then, the third switch T3 is closed, the second scan line scan2 is turned on, and the second switch T2 is opened, at this time, the input end of the driving switch DT receives the VDD voltage, the gate receives the data voltage, the voltage of the output end starts to rise, and the voltage on the sensing line sen also starts to rise, until the voltage on the sensing line sen is equal to the difference between the data voltage and the gate-source voltage difference in the driving switch DT, at this time, the gate-source voltage difference is equal to the threshold voltage, so the threshold voltage can be calculated based on the data voltage and the voltage on the sensing line sen.

[0033] In the compensation stage of the driving switch DT in the pixel 130, the compensation module 210 receives the sensing voltage, calculates the threshold voltage and the voltage to be compensated according to the sensing voltage, and mixes the data voltage through the data line data to compensate the threshold voltage of the driving switch DT.

[0034] In combination with FIG. 2 and FIG. 3, the organic light-emitting display panel 100 further comprises a first power voltage layer 110 and a second power voltage layer 120, the first power voltage layer 110 comprises at least one first input end 113 and a plurality of first output ends 112, a plurality of the first output ends 112 are electrically connected with the driving switches DT in a plurality of the pixels 130 one by one, and output high voltage (VDD voltage) to the driving switches DT; the second power voltage layer 120 comprises at least one second input end 123 and a plurality of second output ends 122, a plurality of the second output ends 122 are electrically connected with the light-emitting units OLED in a plurality of the pixels 130 one by one, and output low voltage (VSS voltage) to the light-emitting units OLED.

[0035] Meanwhile, the first input end 113 and the second input end 123 are connected with a power supply chip in the display device 10, the power supply chip inputs a high voltage (VDD voltage) to the first input end 113, the high voltage passes through the first power supply voltage layer 110 and is then introduced into the corresponding pixel 130 from the first output end 112; the power supply chip inputs a low voltage (VSS voltage) to the second input end 123, the low voltage passes through the second power supply voltage layer 120 and is then introduced into the corresponding pixel 130 from the second output end 122.

[0036] In addition, the first power supply voltage layer 110 and the second power supply voltage layer 120 are arranged in different layers, as an example, the first power supply voltage layer 110 is arranged below the driving switch in the pixel 130, that is, the side of the driving switch away from the light-emitting surface; the second power supply voltage layer 120 is arranged above the light-emitting unit OLED in the pixel 130, that is, the side of the light-emitting unit OLED close to the light-emitting surface. That is, the first power supply voltage layer 110 and the second power supply voltage layer 120 are respectively arranged on the upper and lower sides of the pixel 130 structure.

[0037] The first power supply voltage layer 110 and the second power supply voltage layer 120 are both in a grid shape, referring to FIG. 3, the first power supply voltage layer 110 includes a plurality of first frame parts 111, each first frame part 111 corresponds to surrounding one pixel 130, and one side of one first frame part 111 is distributed between adjacent pixels 130, that is, the orthogonal projection of the pixel 130 on the substrate of the organic light-emitting display panel 100 does not overlap with the orthogonal projection of the first frame part 111 on the substrate of the organic light-emitting display panel 100.

[0038] The second power supply voltage layer 120 adopts the same design idea as the first power supply voltage layer 110, that is, the second power supply voltage layer 120 includes a plurality of second frame parts 121, the second frame parts 121 are arranged one by one corresponding to the first frame parts 111, and the pixels 130 are arranged one by one in the areas surrounded by the second frame parts 121.

[0039] The first power voltage layer 110 and the second power voltage layer 120 are equivalent to a plurality of connection paths, and one straight wire is equivalent to one resistance. At this time, the first power voltage layer 110 and the second power voltage layer 120 are equivalent to a plurality of resistances in parallel. When the pixel 130 is conducted, the shortest path is selected as the conducting path, so that the current does not pass through all the wires in the first power voltage layer 110 or the second power voltage layer 120 at the same time. Therefore, the VDD voltage received by the light emitting unit OLED in each pixel 130 is small, the VSS voltage received by the light emitting unit OLED in each pixel 130 is small, and the uniformity of the organic light emitting display panel 100 is improved. When the organic light emitting display panel 100 is detected and compensated, if the uniformity of the organic light emitting display panel 100 is high, the number of pixels 130 to be detected and compensated can be reduced, and the compensation time of the organic light emitting display panel 100 as a whole can be shortened.

[0040] As shown in FIG. 3, as a specific example, the pixels 130 in the organic light emitting display panel 100 are divided into three types, namely red pixels 131, green pixels 132 and blue pixels 133. The area of each blue pixel 133 is equal to the sum of the area of one red pixel 131 and the area of one green pixel 132. The red pixels 131 and the green pixels 132 are both square and have equal areas. The blue pixels 133 are rectangular. In addition, one red pixel 131, one green pixel 132 and one blue pixel 133 are arranged to form a square structure. In this example, the first frame part 111 and the second frame part 121 are adaptively designed according to the size of the corresponding pixels 130.

[0041] In the embodiment of the present application, the second power voltage layer 120 is made by using a conductive partition structure process, that is, a conductive partition structure is first made by CVD (Chemical Vapor Deposition), and then the second power voltage layer 120 in a grid pattern is formed by evaporation.

[0042] In the embodiment of the present application, the width of the first frame part 111 is equal at each position, and the width of the second frame part 121 is equal at each position, so as to further improve the uniformity of the first power voltage layer 110 at each position and the uniformity of the second power voltage layer 120 at each position, and to further improve the uniformity of the organic light emitting display panel 100.

[0043] In the embodiment of the present application, the pattern of the first power voltage layer 110 and the pattern of the second power voltage layer 120 are the same as the pattern surrounded by the data line data and the first scan line scan1, that is, the orthographic projection of the three on the substrate of the organic light-emitting display panel 100 coincides, and even the width of the first power voltage layer 110 and the width of the second power voltage layer 120 are the same. Through this design, it is beneficial to improve the aperture ratio of the organic light-emitting display panel 100, and can also enhance the light blocking effect between adjacent pixels 130, further weakening the light mixing effect between the pixels 130.

[0044] As shown in FIG. 4, the present application also discloses a driving method of a display device, used to drive the above-mentioned display device 10, and the driving method specifically includes the following steps:

[0045] A: optically detecting the organic light-emitting display panel to determine whether the uniformity of the organic light-emitting display panel exceeds a preset value;

[0046] B: when the uniformity of the organic light-emitting display panel exceeds the preset value, only compensating the threshold voltage of the driving switch in the low gray scale pixel;

[0047] C: when the uniformity of the organic light-emitting display panel is lower than the preset value, compensating the threshold voltage of the driving switch in all pixels.

[0048] In the embodiment of the present application, the grid-like design of the first power voltage layer and the second power voltage layer, the whole surface circuit impedance of the first power voltage layer and the second power voltage layer is small, which can improve the uniformity of the organic light-emitting display panel, so that the light emission of the organic light-emitting display panel is uniform. At this time, the voltage (VGS) at the control end of the driving switch of each pixel changes little, the difference of the VDD voltage of each region is small, the threshold voltage difference between the pixels is small, and the number of driving switches that need to be adjusted is small.

[0049] After the improvement of the first power voltage layer and the second power voltage layer, if the uniformity of the organic light-emitting display panel is still poor, the driving switches in all pixels need to be detected and compensated; if the uniformity of the organic light-emitting display panel is good, only a part of the pixels need to be detected and compensated, or even no detection and compensation is needed, and at this time the display screen is not easy to find abnormalities. The pixels displaying low gray scale are dark in brightness, and when the threshold voltage is abnormal, the display area will be obviously abnormal, so in order to ensure the display effect, the embodiment of the present application still detects and compensates the low gray scale pixels when the uniformity of the organic light-emitting display panel is high.

[0050] As shown in FIG. 5, in step A, specifically includes:

[0051] A1: a plurality of test points are arranged in the organic light-emitting display panel;

[0052] A2: the same voltage signal is input to each pixel corresponding to the test point;

[0053] A3: the brightness of each test point is detected by an optical detector, the ratio of the test points with the same brightness to the total test points is calculated, and whether the uniformity of the organic light-emitting display panel exceeds a preset value is determined.

[0054] The embodiment of the present application adds uniformity detection in the test stage of the display device. According to the size of the organic light-emitting display panel, nine test points, twenty-five test points or one hundred and thirty-five test points can be arranged, and the actual situation is selected. The more test points, the more accurate the uniformity determination. Then, the ratio of the test points with the same brightness to the total test points is detected to determine the uniformity, and of course the ratio of the average brightness to the highest brightness can also be used to determine the uniformity.

[0055] When the gray scale level of the organic light-emitting display panel is 28, the pixels with a brightness below 24 can be low gray scale pixels. In the embodiment of the present application, the requirements for low gray scale pixels are not specifically limited, and the actual situation is selected.

[0056] As shown in FIG. 6, in step B, the preset value is ninety percent. When the uniformity of the organic light-emitting display panel exceeds ninety percent, specifically including:

[0057] B1: identifying the position of the low gray scale pixel;

[0058] B2: turning on the first scan line in the low gray scale pixel, opening the corresponding first switch and inputting the data voltage;

[0059] B3: turning on the third switch, so that the sensing line in the low gray scale pixel inputs the reference voltage;

[0060] B4: turning on the second scan line in the low gray scale pixel, inputting high voltage to the driving switch through the first output end in the first power supply voltage layer;

[0061] B5: turning on the fourth switch, recording the sensing voltage on the sensing line at this time through the compensation module, and calculating the corresponding compensation voltage to compensate the corresponding low gray scale pixel.

[0062] It should be noted that in other embodiments, the preset value can also be eighty percent, ninety-five percent, etc.

[0063] In another embodiment of the present application, the organic light emitting display panel is divided into multiple compensation regions, and when the uniformity of the organic light emitting display panel is lower than a preset value, the threshold voltage of the driving switch in the pixels in only part of the compensation regions is compensated to reduce the detection frequency. For example, the multiple compensation regions are arranged along the length direction of the data lines, and because the compensation region near the side of the driving chip and the external compensation circuit is affected by the heat of the chip, the threshold voltage of the driving voltage in the pixel is more seriously shifted, and the compensation region has a large proportion of abnormally driven switches in the entire panel, so only this region needs to be detected and compensated.

[0064] Alternatively, after the compensation regions are divided, only part of the pixels in some compensation regions are detected and compensated, and all the pixels in some compensation regions are detected and compensated.

[0065] Of course, in other embodiments, the multiple compensation regions of the organic light emitting display panel can also be divided into a grid shape and other shapes, and one or part of the compensation regions are detected and compensated according to needs.

[0066] Further, as shown in FIG. 7, after steps B and C, the driving method further includes steps of:

[0067] D: taking a photo of the compensated display picture;

[0068] E: identifying the pixel region with display unevenness in the photo;

[0069] F: adjusting the data voltage of the pixel region with display unevenness to eliminate the display unevenness region in the display picture.

[0070] The embodiment of the present application further compensates the organic light emitting display panel optically after compensating the threshold voltage of the driving switch in the pixel, to eliminate the place with uneven brightness, first takes a photo of the display picture by using a camera, then records and analyzes the photographed picture by using a De-mura device, adjusts the input voltage for the position with uneven brightness, eliminates the display unevenness region in the display picture, and further improves the uniformity of the display picture.

[0071] It should be noted that the definition of each step involved in the present scheme does not limit the order of the steps without affecting the implementation of the specific scheme, and the steps written in the front can be executed first, or can be executed later, or even can be executed simultaneously. The schemes of different embodiments can be combined and applied without conflict, as long as the present scheme can be implemented, it should be considered to belong to the protection scope of the present application.

[0072] The above are further detailed descriptions of the present application in connection with specific optional embodiments. The present application cannot be recognized as limited to these descriptions. For those skilled in the art to which the present application belongs, some simple deductions or replacements can be made without departing from the concept of the present application, and all these should be considered as falling within the protection scope of the present application.

Claims

1. An organic light emitting display panel, wherein, The organic light-emitting display panel comprises a first power voltage layer, a second power voltage layer and a plurality of pixels, the first power voltage layer comprises at least one first input end and a plurality of first output ends, a plurality of the first output ends are electrically connected to driving switches in the plurality of pixels one by one, and high voltage is output to the driving switches; The second power voltage layer comprises at least one second input end and a plurality of second output ends, a plurality of the second output ends are electrically connected to light-emitting units in the plurality of pixels one by one, and low voltage is output to the light-emitting units; The first power voltage layer and the second power voltage layer are arranged on different layers, the first power voltage layer and the second power voltage layer are both in a grid shape, the first power voltage layer comprises a plurality of first frame portions, the second power voltage layer comprises a plurality of second frame portions, the second frame portions are arranged one by one corresponding to the first frame portions, and the pixels are arranged one by one in the areas surrounded by the second frame portions.

2. The organic light emitting display panel of claim 1, wherein, The widths of the first frame portions are equal, and the widths of the second frame portions are equal.

3. The organic light emitting display panel of claim 2, wherein, The width of the first power voltage layer is the same as the width of the second power voltage layer.

4. The organic light emitting display panel of claim 1, wherein, The first power voltage layer and the second power voltage layer are respectively located on the upper and lower sides of the pixels.

5. The organic light emitting display panel of claim 4, wherein, The first power voltage layer is arranged on the side of the driving switch in the pixel away from the light-emitting surface, and the second power voltage layer is arranged on the side of the light-emitting unit in the pixel close to the light-emitting surface.

6. The organic light emitting display panel of claim 1, wherein, Each of the first frame portions corresponds to one of the pixels. 7.The organic light emitting display panel of claim 1, wherein, The pixels in the organic light-emitting display panel are divided into red pixels, green pixels and blue pixels, and the area of each of the blue pixels is equal to the sum of the area of one of the red pixels and the area of one of the green pixels.

8. The organic light emitting display panel of claim 7, wherein, The red pixels and the green pixels are both in a square structure, and the areas of the red pixels and the green pixels are equal, and the blue pixels are in a rectangular structure. 9.The organic light emitting display panel of claim 8, wherein, The red pixels, the green pixels and the blue pixels are arranged to form a square structure. 10.The organic light emitting display panel of claim 1, wherein, The second power voltage layer is made by a conductive partition structure process. 11.A display device comprising an external compensation circuit and an organic light emitting display panel, wherein, The organic light-emitting display panel comprises a first power voltage layer, a second power voltage layer and a plurality of pixels, the first power voltage layer comprises at least one first input end and a plurality of first output ends, a plurality of the first output ends are electrically connected to driving switches in the plurality of pixels one by one, and high voltage is output to the driving switches; The second power voltage layer comprises at least one second input end and a plurality of second output ends, a plurality of the second output ends are electrically connected to light-emitting units in the plurality of pixels one by one, and low voltage is output to the light-emitting units; wherein the first power voltage layer and the second power voltage layer are arranged on different layers, the first power voltage layer and the second power voltage layer are both in a grid shape, the first power voltage layer comprises a plurality of first frame portions, the second power voltage layer comprises a plurality of second frame portions, the second frame portions are arranged one by one corresponding to the first frame portions, and the pixels are arranged one by one in the areas surrounded by the second frame portions. The pixel in the organic light-emitting display panel comprises a first scan line, a second scan line, a data line, a sensing line, a first switch, a second switch, a driving switch, a capacitor and a light-emitting unit, the control end of the first switch is connected with the first scan line, the input end of the first switch is connected with the data line, the output end of the first switch is connected with the control end of the driving switch, the input end of the driving switch is connected with the first output end of the first power voltage layer, the output end of the driving switch is connected with one end of the light-emitting unit, the other end of the light-emitting unit is connected with the second output end of the second power voltage layer; one end of the capacitor is connected with the output end of the first switch, the other end of the capacitor is connected with the output end of the driving switch; the control end of the second switch is connected with the second scan line, the input end of the second switch is connected with the output end of the driving switch, and the output end of the second switch is connected with the sensing line. The external compensation circuit comprises a compensation module, a reference voltage line, a third switch and a fourth switch, the sensing line is connected with the reference voltage line through the third switch, the sensing line is connected with one end of the compensation module through the fourth switch, and the other end of the compensation module is connected with the data line.

12. The display device of claim 11, wherein, The patterns of the first power voltage layer and the second power voltage layer are the same as the pattern surrounded by the data line and the first scan line.

13. The display device of claim 12, wherein, The widths of the first frame parts are equal, and the widths of the second frame parts are equal.

14. A driving method of a display device, wherein, The display device comprises an external compensation circuit and an organic light-emitting display panel, the organic light-emitting display panel comprises a first power voltage layer, a second power voltage layer and a plurality of pixels, the first power voltage layer comprises at least one first input end and a plurality of first output ends, a plurality of the first output ends are electrically connected with driving switches in the plurality of pixels one by one, and high voltage is output to the driving switches. The second power voltage layer comprises at least one second input end and a plurality of second output ends, a plurality of the second output ends are electrically connected with light-emitting units in the plurality of pixels one by one, and low voltage is output to the light-emitting units; wherein the first power voltage layer and the second power voltage layer are arranged on different layers, the first power voltage layer and the second power voltage layer are both in a grid shape, the first power voltage layer comprises a plurality of first frame parts, the second power voltage layer comprises a plurality of second frame parts, the second frame parts are arranged one by one with the first frame parts, and the pixels are arranged one by one in the areas surrounded by the second frame parts. The pixel in the organic light emitting display panel comprises a first scan line, a second scan line, a data line, a sensing line, a first switch, a second switch, a driving switch, a capacitor and a light emitting unit, a control end of the first switch is connected with the first scan line, an input end of the first switch is connected with the data line, an output end of the first switch is connected with a control end of the driving switch, an input end of the driving switch is connected with a first output end of the first power voltage layer, an output end of the driving switch is connected with one end of the light emitting unit, the other end of the light emitting unit is connected with a second output end of the second power voltage layer; one end of the capacitor is connected with the output end of the first switch, the other end of the capacitor is connected with the output end of the driving switch; a control end of the second switch is connected with the second scan line, an input end of the second switch is connected with the output end of the driving switch, an output end of the second switch is connected with the sensing line; The external compensation circuit comprises a compensation module, a reference voltage line, a third switch and a fourth switch, the sensing line is connected with the reference voltage line through the third switch, the sensing line is connected with one end of the compensation module through the fourth switch, the other end of the compensation module is connected with the data line; The driving method comprises the steps of: optically detecting the organic light emitting display panel to determine whether the uniformity of the organic light emitting display panel exceeds a preset value; when the uniformity of the organic light emitting display panel exceeds the preset value, only compensating the threshold voltage of the driving switch in the low gray scale pixel; and when the uniformity of the organic light emitting display panel is lower than the preset value, compensating the threshold voltage of the driving switch in all pixels.

15. The driving method of a display device according to claim 14, wherein In the step of optically detecting the organic light emitting display panel to determine whether the uniformity of the organic light emitting display panel exceeds a preset value, the step comprises: a plurality of test points are arranged in the organic light emitting display panel; the same voltage signal is input into the pixel corresponding to each test point; and the brightness of each test point is detected by an optical detector, the ratio of the test points with the same brightness to the total test points is calculated, and it is determined whether the uniformity of the organic light emitting display panel exceeds the preset value.

16. The driving method of a display device according to claim 14, wherein In the step of when the uniformity of the organic light emitting display panel exceeds the preset value, only compensating the threshold voltage of the driving switch in the low gray scale pixel, the step comprises: identifying the position of the low gray scale pixel; turning on the first scan line in the low gray scale pixel, opening the corresponding first switch and inputting the data voltage; turning on the third switch to make the sensing line in the low gray scale pixel input the reference voltage; turning on the second scan line in the low gray scale pixel, inputting the high voltage of the driving switch through the first output end in the first power voltage layer; and turning on the fourth switch, recording the sensing voltage on the sensing line at this time through the compensation module, and calculating the corresponding compensation voltage to compensate the corresponding low gray scale pixel.

17. The driving method of a display device according to claim 14, wherein The preset value is ninety percent.

18. The driving method of a display device according to claim 14, wherein The organic light emitting display panel is divided into a plurality of compensation regions, and only the threshold voltage of the driving switch in the pixel in the partial compensation region is compensated when the uniformity of the organic light emitting display panel is lower than a preset value.

19. The driving method of a display device according to claim 14, wherein The driving method further comprises the steps of: taking a photo of the compensated display screen; identifying the pixel region with display non-uniformity in the photo; and adjusting the data voltage of the pixel region with display non-uniformity to eliminate the display non-uniformity region in the display screen.

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