Compensation method of display panel and display panel

Abstract

The application discloses a compensation method of a display panel and the display panel. The compensation method comprises the following steps: selecting a rectangular test region in a display area of the display panel; obtaining a first average current value flowing through all sensing transistors and a second average current value flowing through all driving transistors in the rectangular test region; obtaining a first current curve and a second current curve flowing through the driving transistors based on the first average current value and the second average current value under different driving voltages; determining a transmission loss coefficient of a data signal according to the first current curve and the second current curve; and compensating the driving voltage of each pixel circuit in the rectangular test region based on the transmission loss coefficient. The transmission loss coefficient can compensate the transmission loss of the driving voltage of each pixel circuit, so that the light-emitting current flowing through the driving transistor in the light-emitting stage is ideal, and the phenomenon that the brightness deviates is avoided.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a compensation method for a display panel and a display panel. Background Technology

[0002] During the writing phase of the pixel circuit, the gate and source of the driving transistor are written with corresponding potentials to achieve the desired light emission effect. However, transmission losses occur during the writing process, resulting in undesirable light emission effects. Summary of the Invention

[0003] This application provides a compensation method and a display panel to alleviate the technical problem of brightness shift caused by data signal transmission loss.

[0004] In a first aspect, this application provides a compensation method for a display panel, the compensation method comprising: selecting a rectangular test area in the display area of ​​the display panel, wherein one or more pixel circuits are disposed in each rectangular test area, each pixel circuit including a driving transistor and a sensing transistor, wherein the first terminal of the sensing transistor is connected to the source terminal of the driving transistor; acquiring a first average current value flowing through all sensing transistors and a second average current value flowing through all driving transistors in the rectangular test area; obtaining a first current curve and a second current curve flowing through the driving transistors based on the first average current value and the second average current value under different driving voltages, wherein the driving voltage is the gate-source voltage difference of the driving transistor, the first current curve is the current curve corresponding to the gate-source voltage difference of the driving transistor before the light emission stage, and the second current curve is the current curve corresponding to the gate-source voltage difference of the driving transistor during the light emission stage; determining the transmission loss coefficient of the data signal according to the first current curve and the second current curve; and compensating the driving voltage of each pixel circuit in the rectangular test area based on the transmission loss coefficient.

[0005] In some embodiments, the step of obtaining a first current curve and a second current curve flowing through the driving transistor based on a first average current value and a second average current value under different driving voltages includes: obtaining a first current and a second current flowing through the driving transistor under a driving voltage based on a first average current value and a second average current value under a driving voltage; and fitting the first current curve and the second current curve according to the first current and the second current under different driving voltages.

[0006] In some embodiments, the step of obtaining the first current and the second current flowing through the driving transistor under a driving voltage based on the first average current value and the second average current value under a driving voltage includes: obtaining the first current flowing through the driving transistor under the driving voltage based on the first average current value under a driving voltage; and obtaining the second current flowing through the driving transistor under the driving voltage based on the first average current value and the second average current value under a driving voltage.

[0007] In some embodiments, the step of obtaining the first current flowing through the driving transistor under a driving voltage based on the first average current value under a driving voltage includes: determining the first current based on the number of rows of pixel circuits in the rectangular test area, the number of columns of pixel circuits in the rectangular test area, the number of vertically active display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, and the first average current value.

[0008] In some embodiments, the step of determining the first current based on the number of rows of pixel circuits within the rectangular test area, the number of columns of pixel circuits within the rectangular test area, the number of vertically active display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, and the first average current value includes: configuring the number of columns of pixel circuits within the rectangular test area as m, the number of rows of pixel circuits within the rectangular test area as n, the number of vertically active display rows as v_act, the number of vertically blank rows as v_blk, the number of pre-charge rows as h, the first average current value as I1, and the first current as Ids(wr); and determining the first current according to a first formula, which is as follows:

[0009] I1=Ids(wr)*m*h*n÷(v_act+v_blk).

[0010] In some embodiments, the step of obtaining a second current flowing through the driving transistor under a driving voltage based on a first average current value and a second average current value under a driving voltage includes: determining the second current based on the number of rows of pixel circuits in the rectangular test area, the number of columns of pixel circuits in the rectangular test area, the number of vertically active display rows of the display panel, the number of vertically blank rows of the display panel, the number of precharge rows, the first average current value, and the second average current value.

[0011] In some embodiments, the step of determining the second current based on the number of rows of pixel circuits within the rectangular test area, the number of columns of pixel circuits within the rectangular test area, the number of vertically active display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, a first average current value, and a second average current value includes: configuring the second average current value as I2 and the second current as Ids(em); and determining the first current according to a second formula, which is as follows:

[0012] I2=I1+Ids(em)*m*(v_act+v_blk-h)*n÷(v_act+v_blk).

[0013] In some embodiments, the step of determining the transmission loss coefficient of the data signal based on the first current curve and the second current curve includes: determining the first driving voltage in the first current curve and the second driving voltage in the second current curve under the same current value based on the first current curve and the second current curve; and determining the transmission loss coefficient as the ratio of the second driving voltage to the first driving voltage.

[0014] In some implementations, the step of compensating the driving voltage of each pixel circuit in the rectangular test area based on the transmission loss coefficient includes: configuring the transmission loss coefficient as a and the driving voltage of the pixel circuit in the writing stage before compensation as Vgs(wr); and using a*Vgs(wr) as the driving voltage of the pixel circuit in the light emission stage.

[0015] Secondly, this application provides a display panel that performs the compensation method in at least one of the above embodiments.

[0016] The compensation method and display panel provided in this application first select a rectangular test area in the display area of ​​the display panel, then obtain the first average current value flowing through all sensing transistors and the second average current value flowing through all driving transistors in the rectangular test area, and then obtain the first current curve and the second current curve flowing through the driving transistors based on the first average current value and the second average current value under different driving voltages. Then, the transmission loss coefficient of the data signal is determined according to the first current curve and the second current curve, and then the driving voltage of each pixel circuit in the rectangular test area is compensated based on the transmission loss coefficient. The transmission loss coefficient can compensate for the transmission loss of the driving voltage of each pixel circuit, thereby ensuring that the light-emitting current flowing through the driving transistors during the light-emitting stage is ideal and will not cause a brightness shift.

[0017] Furthermore, since there are certain differences between the design parameters and process parameters of the display panel, the accuracy of the simulation method for obtaining the transmission loss coefficient is low. However, this application obtains the transmission loss coefficient through the actual measurement method of current detection, which can overcome the influence of the difference between the design parameters and process parameters on the acquisition of the transmission loss coefficient and improve the accuracy of the acquisition of the transmission loss coefficient. Attached Figure Description

[0018] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the pixel circuit structure in related technologies.

[0020] Figure 2 for Figure 1 The timing diagram of the pixel circuit is shown.

[0021] Figure 3 This is a schematic flowchart of a compensation method for a display panel provided in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the structure of the display panel provided in an embodiment of this application.

[0023] Figure 5 for Figure 4 A schematic diagram of the corresponding parameters of the display panel shown.

[0024] Figure 6 This is a schematic diagram of the structure for obtaining the first average current value and the second average current value according to an embodiment of this application.

[0025] Figure 7 This is a schematic diagram illustrating the relationship between the luminous current and the driving voltage, provided in an embodiment of this application.

[0026] Figure 8 This is a schematic diagram illustrating the electrical changes of the driving transistor provided in an embodiment of this application.

[0027] Figure 9 This is a schematic diagram illustrating the structure for obtaining the transmission loss coefficient in different rectangular test areas, as provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features thus defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more unless otherwise explicitly specified.

[0030] Figure 1This is a schematic diagram of a pixel circuit in related technologies. The pixel circuit includes at least one of a write transistor T2, a drive transistor T1, a sensing transistor T3, a storage capacitor Cst, and a light-emitting device D1. The drain of the drive transistor T1 is connected to a first power supply line, the source of the drive transistor T1 is connected to the anode of the light-emitting device D1, and the cathode of the light-emitting device D1 is connected to a second power supply line. One end of the storage capacitor Cst is connected to the gate of the drive transistor T1, and the other end of the storage capacitor Cst is connected to the source of the drive transistor T1. The first terminal of the write transistor T2 is connected to a data line, the second terminal of the write transistor T2 is connected to the gate of the drive transistor T1, and the gate of the write transistor T2 is connected to a first scan line. The first terminal of the sensing transistor T3 is connected to the source of the drive transistor T1, the second terminal of the sensing transistor T3 is connected to a reference voltage line, and the gate of the sensing transistor T3 is connected to a second scan line.

[0031] The data lines are used to transmit the data signal "data". The first scan line is used to transmit the first scan signal "WR". The second scan line is used to transmit the second scan signal "RD". The reference voltage line is used to transmit the reference voltage signal "Vref". The first power line is used to transmit the first power signal "VDD", and the second power line is used to transmit the second power signal "VSS". The potential of the first power signal "VDD" is greater than the potential of the second power signal "VSS".

[0032] It should be noted that at least one of the above-mentioned transistors can be either all N-channel thin-film transistors or all P-channel thin-film transistors. Preferably, this application uses the example of at least one of the above-mentioned transistors being an N-channel thin-film transistor.

[0033] Among them, the light-emitting device D1 can be an organic light-emitting diode, a micro light-emitting diode, a mini light-emitting diode, or a quantum dot light-emitting diode.

[0034] Figure 2 for Figure 1 The timing diagram of the pixel circuit shown illustrates that one frame (t-frame) of this pixel circuit includes the following stages:

[0035] During the write phase t-wr: both the first scan signal WR and the second scan signal RD are at high potentials. The write transistor T2 is turned on to initialize the gate potential Vg of the driving transistor T1, and the sensing transistor T3 is turned on to initialize the source potential Vs of the driving transistor T1. In this phase, the gate-source voltage difference between the gate potential and the source potential of the driving transistor T1 is Vgs(wr).

[0036] During the light-emitting stage t-em: both the first scan signal WR and the second scan signal RD are at low potentials, and both the write transistor T2 and the sensing transistor T3 are turned off. In this stage, the gate-source voltage difference between the gate potential and the source potential of the driving transistor T1 is Vgs(em).

[0037] However, during the driving process of the pixel circuit described above, since the parasitic capacitance of the gate of the driving transistor T1 is different from that of the source of the driving transistor T1, the gate-source voltage difference (Vgs) of the driving transistor T1 differs between the writing stage t-wr and the light-emitting stage t-em. This results in the light-emitting current flowing through the driving transistor T1 in the light-emitting stage t-em not being ideal, which in turn causes a shift in brightness.

[0038] In the display panel 100, different pixels are distributed in different positions. Due to the difference in the delay time of at least one of the first scan signal WR, the second scan signal RD, the data signal data, the reference voltage signal Vref, the first power signal VDD, and the second power signal VSS, the ratio of Vgs(wr) to Vgs(em) will be different, which will further aggravate the unevenness of brightness.

[0039] Therefore, in view of the technical problem mentioned above where data signal transmission loss causes brightness shift, this embodiment provides a compensation method for the display panel 100. Please refer to [link to relevant documentation]. Figures 1 to 9 ,like Figure 3 As shown, the compensation method includes the following steps:

[0040] Step S10: Select a rectangular test area in the display area of ​​the display panel, and set one or more pixel circuits in each rectangular test area.

[0041] Each pixel circuit includes a driving transistor T1 and a sensing transistor T3, with the first terminal of the sensing transistor T3 connected to the source terminal of the driving transistor T1.

[0042] Step S20: Obtain the first average current value flowing through all sensing transistors and the second average current value flowing through all driving transistors in the rectangular test area.

[0043] Step S30: Based on the first average current value and the second average current value under different driving voltages, obtain the first current curve and the second current curve flowing through the driving transistor.

[0044] Wherein, the driving voltage is the gate-source voltage difference of the driving transistor T1, the first current curve Q1 is the current curve corresponding to the gate-source voltage difference of the driving transistor T1 before the light emission stage t-em, and the second current curve Q2 is the current curve corresponding to the gate-source voltage difference of the driving transistor T1 during the light emission stage t-em.

[0045] Step S40: Determine the transmission loss coefficient of the data signal based on the first current curve and the second current curve.

[0046] Step S50: Compensate the driving voltage of each pixel circuit in the rectangular test area based on the transmission loss coefficient.

[0047] It is understood that the compensation method of the display panel 100 provided in this embodiment first selects a rectangular test area 101 in the display area of ​​the display panel 100, then obtains the first average current value flowing through all sensing transistors T3 and the second average current value flowing through all driving transistors T1 in the rectangular test area 101, and then obtains the first current curve Q1 and the second current curve Q2 flowing through the driving transistors T1 based on the first average current value and the second average current value under different driving voltages. Then, the transmission loss coefficient of the data signal data is determined according to the first current curve Q1 and the second current curve Q2. Then, the driving voltage of each pixel circuit in the rectangular test area 101 is compensated based on the transmission loss coefficient. The transmission loss coefficient can compensate for the transmission loss of the driving voltage of each pixel circuit, thereby ensuring that the light emission current flowing through the driving transistors T1 in the light emission stage t-em is ideal and will not cause the brightness to shift.

[0048] Furthermore, since there are certain differences between the design parameters and process parameters of the display panel 100, the accuracy of the simulation method for obtaining the transmission loss coefficient is low. However, this embodiment obtains the transmission loss coefficient through the actual measurement method of current detection, which can overcome the influence of the difference between the design parameters and process parameters on the acquisition of the transmission loss coefficient and improve the accuracy of the acquisition of the transmission loss coefficient.

[0049] It should be noted that the first electrode can be either the source or the drain, and the second electrode can be either the source or the drain. For example, when the first electrode is the source, the second electrode is the drain; or, when the first electrode is the drain, the second electrode is the source.

[0050] The display area of ​​the display panel 100 may include one or more such as Figure 4 , Figure 5 The rectangular test area 101 shown contains an array of multiple pixel circuits. In other words, the multiple pixel circuits in each rectangular test area 101 can be divided into... Figure 5 The diagram shows n rows and m columns.

[0051] In one embodiment, the step of obtaining the first current curve Q1 and the second current curve Q2 flowing through the driving transistor T1 based on the first average current value and the second average current value under different driving voltages includes: obtaining the first current and the second current flowing through the driving transistor T1 under a driving voltage based on the first average current value and the second average current value under a driving voltage; and fitting the first current curve Q1 and the second current curve Q2 according to the first current and the second current under different driving voltages.

[0052] It should be noted that, with Figure 1 compared to, Figure 6 A method for obtaining a first current and a second current under a driving voltage is illustrated. Specifically, the first current flowing through the sensing transistor T3 under the driving voltage can be obtained using a first ammeter A1, and the second current flowing through the sensing transistor T3 under the driving voltage can be obtained using a second ammeter A2. This method allows obtaining the first current flowing through the driving transistor T1 and the second current flowing through the sensing transistor T3 for all pixel circuits in a rectangular test area 101 under the driving voltage. Then, summing all the first currents and dividing by the number of pixel circuits in the rectangular test area 101 yields the first average current value under the driving voltage. Similarly, summing all the second currents and dividing by the number of pixel circuits in the rectangular test area 101 yields the second average current value under the driving voltage. Then, by changing the driving voltage, the corresponding first and second currents under each driving voltage can be obtained. Based on the first and second currents corresponding to different driving voltages, a method for obtaining... Figure 7 The first current curve Q1 and the second current curve Q2 are shown.

[0053] The first current curve Q1 represents the change in luminous current before transmission loss factor compensation. The second current curve Q2 represents the change in luminous current after transmission loss factor compensation.

[0054] In one embodiment, the step of obtaining the first current and the second current flowing through the driving transistor T1 under the driving voltage based on the first average current value and the second average current value under the driving voltage includes: obtaining the first current flowing through the driving transistor T1 under the driving voltage based on the first average current value under the driving voltage; and obtaining the second current flowing through the driving transistor T1 under the driving voltage based on the first average current value and the second average current value under the driving voltage.

[0055] In one embodiment, the step of obtaining the first current flowing through the driving transistor T1 under a driving voltage based on the first average current value under a driving voltage includes: determining the first current based on the number of rows of pixel circuits in the rectangular test area 101, the number of columns of pixel circuits in the rectangular test area 101, the number of vertically effective display rows of the display panel 100, the number of vertically blank rows of the display panel 100, the number of pre-charge rows, and the first average current value.

[0056] In one embodiment, such as Figure 5 As shown, the step of determining the first current based on the number of rows of pixel circuits in the rectangular test area 101, the number of columns of pixel circuits in the rectangular test area 101, the number of vertically effective display rows of the display panel 100, the number of vertically blank rows of the display panel 100, the number of pre-charge rows, and the first average current value includes: configuring the number of columns of pixel circuits in the rectangular test area 101 as m, the number of rows of pixel circuits in the rectangular test area 101 as n, the number of vertically effective display rows as v_act, the number of vertically blank rows as v_blk, the number of pre-charge rows as h, the first average current value as I1, and the first current as Ids(wr); and determining the first current according to the first formula, which is as follows:

[0057] I1=Ids(wr)*m*h*n÷(v_act+v_blk).

[0058] It should be noted that the number of precharged rows refers to the number of rows of the pixel circuit that are precharged simultaneously each time. For example, h can be an integer such as 1, 2, 3, 4, etc.

[0059] In one embodiment, the step of obtaining the second current flowing through the driving transistor T1 under a driving voltage based on the first average current value and the second average current value under a driving voltage includes: determining the second current based on the number of rows of pixel circuits in the rectangular test area 101, the number of columns of pixel circuits in the rectangular test area 101, the number of vertically effective display rows of the display panel 100, the number of vertically blank rows of the display panel 100, the number of pre-charge rows, the first average current value, and the second average current value.

[0060] In one embodiment, the step of determining the second current based on the number of rows of pixel circuits within the rectangular test area 101, the number of columns of pixel circuits within the rectangular test area 101, the number of vertically effective display rows of the display panel 100, the number of vertically blank rows of the display panel 100, the number of pre-charge rows, a first average current value, and a second average current value includes: configuring the second average current value as I2 and the second current as Ids(em); and determining the first current according to a second formula, which is as follows:

[0061] I2=I1+Ids(em)*m*(v_act+v_blk-h)*n÷(v_act+v_blk).

[0062] In one embodiment, the step of determining the transmission loss coefficient of the data signal data based on the first current curve Q1 and the second current curve Q2 includes: determining the first driving voltage in the first current curve Q1 and the second driving voltage in the second current curve Q2 under the same current value based on the first current curve Q1 and the second current curve Q2; and determining the transmission loss coefficient as the ratio of the second driving voltage to the first driving voltage.

[0063] It should be noted that, such as Figure 7 As shown, the first driving voltage can be V1. The second driving voltage can be V2.

[0064] In one embodiment, the step of compensating the driving voltage of each pixel circuit in the rectangular test area 101 based on the transmission loss coefficient includes: configuring the transmission loss coefficient as a and the driving voltage of the pixel circuit in the uncompensated writing stage t-wr as Vgs(wr); and using a*Vgs(wr) as the driving voltage of the pixel circuit in the light emission stage t-em.

[0065] It should be noted that, such as Figure 7 As shown, using a*Vgs(wr) as the driving voltage of the pixel circuit in the light-emitting stage t-em, the expected light-emitting current can be obtained, that is, the expected light-emitting brightness can be obtained.

[0066] Then, by using this method to compensate for all pixel circuits in the rectangular test area 101, compensation for all pixel circuits in the rectangular test area 101 can be achieved. Then, for... Figure 9 Other rectangular test areas 101 in the display area of ​​the display panel 100 shown are compensated in the same way as described above, so as to obtain the expected light emission brightness of each pixel circuit in the display panel 100, and at the same time improve the brightness uniformity of the display panel 100.

[0067] It should be noted that, Figure 8 This is a schematic diagram of the electrical changes of the driving transistor T1 provided in an embodiment of this application, and... Figure 2 In comparison, combined Figure 7 It is known that the expected luminous current in the writing stage t-wr is Ids(wr), and the actual luminous current in the luminous stage t-em is Ids(em). Before the compensation method of this application, Ids(wr) and Ids(em) are different. After the compensation method of this application, a*Vgs(wr) can be driven by the expected Vgs(em) after transmission loss, thereby obtaining the expected luminous brightness.

[0068] In one embodiment, this embodiment provides a display panel 100 that performs the compensation method described in at least one of the above embodiments.

[0069] It is understood that since the display panel 100 provided in this embodiment performs the compensation method in at least one of the above embodiments, it is also possible to first select a rectangular test area 101 in the display area of ​​the display panel 100, then obtain the first average current value flowing through all sensing transistors T3 and the second average current value flowing through all driving transistors T1 in the rectangular test area 101, and then obtain the first current curve Q1 and the second current curve Q2 flowing through the driving transistor T1 based on the first average current value and the second average current value under different driving voltages, then determine the transmission loss coefficient of the data signal data based on the first current curve Q1 and the second current curve Q2, and then compensate the driving voltage of each pixel circuit in the rectangular test area 101 based on the transmission loss coefficient. The transmission loss coefficient can compensate for the transmission loss of the driving voltage of each pixel circuit, thereby ensuring that the light emission current flowing through the driving transistor T1 in the light emission stage t-em is ideal and will not cause the brightness to shift.

[0070] Furthermore, since there are certain differences between the design parameters and process parameters of the display panel 100, the accuracy of the simulation method for obtaining the transmission loss coefficient is low. However, this embodiment obtains the transmission loss coefficient through the actual measurement method of current detection, which can overcome the influence of the difference between the design parameters and process parameters on the acquisition of the transmission loss coefficient and improve the accuracy of the acquisition of the transmission loss coefficient.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0072] The compensation method and display panel provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A compensation method for a display panel, characterized in that, The compensation method includes: A rectangular test area is selected in the display area of ​​the display panel. One or more pixel circuits are provided in each rectangular test area. Each pixel circuit includes a driving transistor and a sensing transistor. The first electrode of the sensing transistor is connected to the source electrode of the driving transistor. Obtain the first average current value flowing through all the sensing transistors and the second average current value flowing through all the driving transistors in the rectangular test area; Based on the first average current value and the second average current value under different driving voltages, a first current curve and a second current curve are obtained flowing through the driving transistor. The driving voltage is the gate-source voltage difference of the driving transistor. The first current curve is the current curve corresponding to the gate-source voltage difference of the driving transistor before the light emission stage, and the second current curve is the current curve corresponding to the gate-source voltage difference of the driving transistor during the light emission stage. Based on the first current curve and the second current curve, determine the transmission loss coefficient of the data signal; The driving voltage of each pixel circuit in the rectangular test area is compensated based on the transmission loss coefficient.

2. The compensation method according to claim 1, characterized in that, The step of obtaining the first current curve and the second current curve flowing through the driving transistor based on the first average current value and the second average current value under different driving voltages includes: Based on the first average current value and the second average current value under a driving voltage, the first current and the second current flowing through the driving transistor under the driving voltage are obtained. The first current curve and the second current curve are obtained by fitting the first current and the second current under different driving voltages.

3. The compensation method according to claim 2, characterized in that, The step of obtaining the first current and the second current flowing through the driving transistor under the driving voltage based on the first average current value and the second average current value under a driving voltage includes: Based on the first average current value under a driving voltage, the first current flowing through the driving transistor under the driving voltage is obtained; Based on the first average current value and the second average current value under a driving voltage, the second current flowing through the driving transistor under the driving voltage is obtained.

4. The compensation method according to claim 3, characterized in that, The step of obtaining the first current flowing through the driving transistor under the driving voltage based on the first average current value under a driving voltage includes: The first current is determined based on the number of rows of pixel circuits within the rectangular test area, the number of columns of pixel circuits within the rectangular test area, the number of vertically effective display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, and the first average current value.

5. The compensation method according to claim 4, characterized in that, The step of determining the first current based on the number of rows of pixel circuits within the rectangular test area, the number of columns of pixel circuits within the rectangular test area, the number of vertically effective display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, and the first average current value includes: The number of columns of the pixel circuits in the rectangular test area is m, the number of rows of the pixel circuits in the rectangular test area is n, the number of vertically effective display rows is v_act, the number of vertically blank rows is v_blk, the number of pre-charge rows is h, the first average current value is I1, and the first current is Ids(wr). The first current is determined according to the first formula, which is as follows: I1=Ids(wr)*m*h*n÷(v_act+v_blk).

6. The compensation method according to claim 5, characterized in that, The step of obtaining the second current flowing through the driving transistor under the driving voltage based on the first average current value and the second average current value under a driving voltage includes: The second current is determined based on the number of rows of pixel circuits within the rectangular test area, the number of columns of pixel circuits within the rectangular test area, the number of vertically effective display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, the first average current value, and the second average current value.

7. The compensation method according to claim 6, characterized in that, The step of determining the second current based on the number of rows of pixel circuits within the rectangular test area, the number of columns of pixel circuits within the rectangular test area, the number of vertically effective display rows of the display panel, the number of vertically blank rows of the display panel, the number of pre-charge rows, the first average current value, and the second average current value includes: Configure the second average current value as I2 and the second current as Ids(em); The first current is determined according to the second formula, which is as follows: I2=I1+Ids(em)*m*(v_act+v_blk-h)*n÷(v_act+v_blk).

8. The compensation method according to any one of claims 1-7, characterized in that, The step of determining the transmission loss coefficient of the data signal based on the first current curve and the second current curve includes: Based on the first current curve and the second current curve, determine the first driving voltage in the first current curve and the second driving voltage in the second current curve under the same current value; The transmission loss coefficient is determined to be the ratio of the second driving voltage to the first driving voltage.

9. The compensation method according to claim 8, characterized in that, The step of compensating the driving voltage of each pixel circuit in the rectangular test area based on the transmission loss coefficient includes: The transmission loss coefficient is configured as a, and the driving voltage of the pixel circuit in the writing stage before compensation is Vgs(wr); a*Vgs(wr) is used as the driving voltage of the pixel circuit during the light emission stage.

10. A display panel, characterized in that, The display panel performs the compensation method as described in any one of claims 1-9.

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