Display panel and compensation method

Abstract

The application discloses a display panel and a compensation method. The compensation method establishes a matrix relationship between a whole-surface resistance network parameter and a light-emitting current and a whole-surface distribution voltage matrix of a negative terminal of a power supply based on the whole-surface resistance network parameter of the negative terminal of the power supply. The light-emitting current flowing through a driving transistor and an organic light-emitting diode is obtained according to a characteristic curve of the driving transistor. The voltage across the organic light-emitting diode and the whole-surface distribution voltage matrix of the negative terminal of the power supply are determined according to the light-emitting current. The compensation value of a data signal is obtained based on the voltage across the organic light-emitting diode and the whole-surface distribution voltage matrix of the negative terminal of the power supply. The superposition result of the data signal and the compensation value is input to the gate of the driving transistor. The voltage drop of the corresponding negative terminal of the power supply can be offset by the compensation value of the data signal. The brightness uniformity of each pixel circuit is improved, and the light-emitting brightness of each pixel circuit is improved as a whole.

Description

Technical Field

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

[0002] The power supply traces in an organic light-emitting diode (OLED) display panel contain resistance. When current flows through this resistor, the voltage difference across it is called voltage drop. The longer the power supply trace, the greater the resistance, which not only affects the uniformity of brightness display but also weakens the panel's display brightness. Summary of the Invention

[0003] This application provides a display panel and a compensation method to alleviate the technical problem of low display brightness and uniformity caused by uneven voltage drop at each negative terminal of the power supply.

[0004] In a first aspect, this application provides a compensation method for a display panel, the display panel including an array of pixel circuits, each pixel circuit including a write transistor, a drive transistor, a sensing transistor, a storage capacitor, and an organic light-emitting diode (OLED). The write transistor controls the writing of a data signal to the gate of the drive transistor. The drive transistor and the OLED are connected in series between the positive and negative terminals of a power supply, with the negative terminal of the power supply distributed across the entire surface of the display panel. The compensation method includes: establishing a matrix relationship between the resistive network parameters of the entire surface of the negative terminal of the power supply and the luminous current and the distributed voltage matrix of the entire surface of the negative terminal of the power supply, based on the resistive network parameters of the entire surface of the negative terminal of the power supply; obtaining the luminous current flowing through the drive transistor and the OLED according to the characteristic curve of the drive transistor; determining the voltage across the OLED and the distributed voltage matrix of the entire surface of the negative terminal of the power supply according to the luminous current; obtaining a compensation value for the data signal based on the voltage across the OLED and the distributed voltage matrix of the entire surface of the negative terminal of the power supply; and inputting the superposition result of the data signal and the compensation value to the gate of the drive transistor.

[0005] In some embodiments, the step of establishing a matrix relationship between the overall resistance network parameters and the luminous current and the overall distributed voltage matrix of the negative terminal of the power supply, based on the overall resistance network parameters of the negative terminal of the power supply, includes: establishing the overall resistance network parameters of the negative terminal of the power supply; calculating the reciprocal matrix corresponding to the overall resistance network parameters based on the overall resistance network parameters; and establishing a matrix relationship between the reciprocal matrix and the luminous current and the overall distributed voltage matrix of the negative terminal of the power supply.

[0006] In some embodiments, the step of determining the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply based on the emission current includes: obtaining the characteristic curve of the organic light-emitting diode; and obtaining the voltage across the organic light-emitting diode based on the characteristic curve and the emission current.

[0007] In some embodiments, the step of determining the voltage across the organic light-emitting diode and the full-area distributed voltage matrix of the negative terminal of the power supply based on the luminous current further includes: obtaining the full-area distributed voltage matrix based on the luminous current, the reciprocal matrix, and the matrix relationship.

[0008] In some embodiments, the step of obtaining the compensation value of the data signal based on the voltage across the organic light-emitting diode and the full-area distributed voltage matrix of the negative power supply terminal includes: obtaining the equivalent voltage drop of each negative power supply terminal according to the full-area distributed voltage matrix of the negative power supply terminal; and obtaining the source voltage change of the driving transistor according to the sum of the equivalent voltage drop and the voltage across the organic light-emitting diode.

[0009] In some embodiments, the step of obtaining the compensation value of the data signal based on the voltage across the two ends of the organic light-emitting diode and the full-area distributed voltage matrix of the negative terminal of the power supply further includes: obtaining the potential influence coefficient of the driving transistor, wherein the potential influence coefficient is the ratio of the change in the source potential of the driving transistor to the change in the gate potential of the driving transistor; and obtaining the compensation value of the data signal based on the potential influence coefficient and the change in the source voltage of the driving transistor.

[0010] In some implementations, the step of obtaining the compensation value of the data signal based on the potential influence coefficient and the source voltage change of the driving transistor includes: setting the potential influence coefficient, the source voltage change of the driving transistor, and the compensation value of the data signal as μ, ΔVs(i,j), and δ(i,j), respectively; then the compensation value of the data signal is obtained by formula (1-1):

[0011] δ(i,j)=(1-μ)×ΔVs(i,j)(1-1).

[0012] In some embodiments, the step of obtaining the compensation value of the data signal based on the voltage across the two ends of the organic light-emitting diode and the full-area distributed voltage matrix of the negative terminal of the power supply further includes: obtaining a compensation value corresponding to the display color according to the display color of the organic light-emitting diode.

[0013] In some embodiments, the step of inputting the superposition result of the data signal and the compensation value to the gate of the driving transistor includes: creating a compensation table for each compensation value; calling the corresponding compensation value according to the grayscale; calculating the superposition result of the data signal and the compensation value; and transmitting the superposition result to the gate of the driving transistor.

[0014] Secondly, this application provides a display panel that performs the compensation method in at least one of the above embodiments.

[0015] The display panel and compensation method provided in this application establish a matrix relationship between the parameters of the entire resistive network based on the parameters of the entire resistive network at the negative terminal of the power supply, the luminous current, and the entire distributed voltage matrix at the negative terminal of the power supply. The luminous current flowing through the driving transistor and the organic light-emitting diode is obtained according to the characteristic curve of the driving transistor. The voltage across the organic light-emitting diode and the entire distributed voltage matrix at the negative terminal of the power supply are determined according to the luminous current. The compensation value of the data signal is obtained based on the voltage across the organic light-emitting diode and the entire distributed voltage matrix at the negative terminal of the power supply. The superposition result of the data signal and the compensation value is input to the gate of the driving transistor. The voltage drop at the corresponding negative terminal of the power supply can be offset by the compensation value of the data signal, which not only improves the brightness uniformity of each pixel circuit, but also improves the overall luminous brightness of each pixel circuit. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a flowchart illustrating the compensation method for a display panel provided in an embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the pixel circuit provided in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the equivalent resistance of each power supply negative terminal provided in the embodiments of this application. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] In view of the aforementioned technical problem of uneven voltage drop at the negative terminals of the power supply leading to low display brightness and uniformity, this embodiment provides a compensation method for the display panel. Please refer to [link to relevant documentation]. Figures 1 to 3 ,like Figure 1As shown, the compensation method includes the following steps:

[0023] Step S10: Based on the parameters of the entire resistive network at the negative terminal of the power supply, establish the matrix relationship between the parameters of the entire resistive network and the emission current and the distributed voltage matrix of the entire resistive network at the negative terminal of the power supply.

[0024] Step S20: Based on the characteristic curve of the driving transistor, obtain the luminous current flowing through the driving transistor and the organic light-emitting diode.

[0025] Step S30: Determine the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply based on the luminous current.

[0026] Step S40: Based on the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply, obtain the compensation value of the data signal.

[0027] Step S50: Input the superposition result of the input data signal and the compensation value to the gate of the driving transistor.

[0028] It is understood that the compensation method provided in this embodiment establishes a matrix relationship between the parameters of the entire resistive network based on the parameters of the entire resistive network at the negative terminal VSS of the power supply, the luminous current, and the distributed voltage matrix of the entire distributed voltage at the negative terminal VSS of the power supply. The luminous current flowing through the driving transistor T1 and the organic light-emitting diode (OLED) is obtained based on the characteristic curve of the driving transistor T1. The voltage across the OLED and the distributed voltage matrix of the entire distributed voltage at the negative terminal VSS of the power supply are determined based on the luminous current. The compensation value of the data signal is obtained based on the voltage across the OLED and the distributed voltage matrix of the entire distributed voltage at the negative terminal VSS of the power supply. The superposition result of the data signal and the compensation value is input to the gate of the driving transistor T1. The compensation value of the data signal can offset the voltage drop at the corresponding negative terminal VSS of the power supply, which not only improves the brightness uniformity of each pixel circuit but also improves the overall luminous brightness of each pixel circuit.

[0029] It should be noted that the display panel includes an array of pixel circuits. For example... Figure 2 As shown, 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 an organic light-emitting diode (OLED).

[0030] The positive terminal VDD of the power supply is connected to the first terminal of the driving transistor T1. The second terminal of the driving transistor T1 is connected to the anode of the organic light-emitting diode (OLED), one end of the storage capacitor Cst, and the first terminal of the sensing transistor T3. The cathode of the OLED is connected to the negative terminal VSS of the power supply. In other words, the driving transistor T1 and the OLED are connected in series between the positive terminal VDD and the negative terminal VSS. The negative terminal VSS is distributed across the entire surface of the display panel.

[0031] The second terminal of the sensing transistor T3 is connected to the sensing line SL, and the gate of the sensing transistor T3 is connected to the first gate driving terminal RD.

[0032] The first terminal of the write transistor T2 is connected to the corresponding data signal, Vdata, and the second terminal of the write transistor T2 is connected to the gate of the drive transistor T1. The gate of the write transistor T2 is connected to the second gate drive terminal WR. The write transistor T2 is used to control the writing of the data signal to the gate of the drive transistor T1.

[0033] Where Ids is the luminous current flowing through the driving transistor T1 and the organic light-emitting diode OLED. Rd is the equivalent resistance of the positive terminal VDD of the power supply. Rs is the equivalent resistance of the negative terminal VSS of the power supply.

[0034] The characteristic curve of the driving transistor T1 is known in advance, or it can be derived from the corresponding thin-film transistor that has already been fabricated in the display panel.

[0035] In one embodiment, the step of establishing a matrix relationship between the overall resistance network parameters of the power supply negative terminal VSS and the luminous current and the overall distributed voltage matrix of the power supply negative terminal VSS includes: establishing the overall resistance network parameters of the power supply negative terminal VSS; calculating the reciprocal matrix corresponding to the overall resistance network parameters based on the overall resistance network parameters; and establishing a matrix relationship between the reciprocal matrix and the luminous current and the overall distributed voltage matrix of the power supply negative terminal VSS.

[0036] It should be noted that, such as Figure 3 As shown, the equivalent resistance of each power supply negative terminal VSS at the edge position, as well as the equivalent resistance in the horizontal direction and the equivalent resistance in the vertical direction between pixel circuits, can be accurately obtained. Then, based on these equivalent resistances, the full-area resistance network parameters of the power supply negative terminal VSS can be established.

[0037] in, Figure 2 The equivalent resistance (Rs) of the negative terminal VSS of the power supply is equivalent to Figure 3 The four equivalent resistors are shown in the dashed box.

[0038] The parameters of the entire resistive network are composed of the equivalent resistances of each negative terminal VSS of the power supply arranged in a matrix. The corresponding matrix formed by the reciprocals of the equivalent resistances of each negative terminal VSS is the reciprocal matrix. The above matrix relationship is established based on Kirchhoff's current law, as shown in equation (0-1):

[0039] M*VSIR=Ids (0-1)

[0040] Where M is the reciprocal matrix. VSIR is the full-area distributed voltage matrix of the negative terminal VSS of the power supply. Ids is the luminous current. The size of the reciprocal matrix and the full-area distributed voltage matrix are positively correlated with the resolution of the display panel.

[0041] In one embodiment, the step of determining the voltage across the organic light-emitting diode (OLED) and the full-area distributed voltage matrix of the negative power supply terminal VSS based on the emission current includes: obtaining the characteristic curve of the organic light-emitting diode (OLED); and obtaining the voltage across the organic light-emitting diode (OLED) based on the characteristic curve and the emission current.

[0042] It should be noted that the characteristic curve of an organic light-emitting diode (OLED) is a V (voltage) - I (current) characteristic curve, which is known. Therefore, the voltage across the OLED can be obtained by measuring the luminous current flowing through it.

[0043] In one embodiment, the step of determining the voltage across the two ends of the organic light-emitting diode OLED and the full-area distributed voltage matrix of the negative power supply terminal VSS based on the luminous current further includes: obtaining the full-area distributed voltage matrix based on the luminous current, the reciprocal matrix, and the matrix relationship.

[0044] It should be noted that by substituting the determined luminous current and reciprocal matrix into formula (0-1), the VSIR can be calculated.

[0045] In one embodiment, the step of obtaining the compensation value of the data signal based on the voltage across the organic light-emitting diode (OLED) and the full-area distributed voltage matrix of the negative power supply terminal (VSS) includes: obtaining the equivalent voltage drop of each negative power supply terminal (VSS) according to the full-area distributed voltage matrix of the negative power supply terminal (VSS); and obtaining the source voltage change of the driving transistor T1 according to the sum of the equivalent voltage drop and the voltage across the organic light-emitting diode (OLED).

[0046] It should be noted that since the entire distributed voltage matrix is ​​a matrix composed of the equivalent voltage drops of each negative terminal VSS of the power supply, the equivalent voltage drops of each negative terminal VSS, i.e., VSIR(i,j), can be obtained from the entire distributed voltage matrix; or, the equivalent voltage drops of each negative terminal VSS, i.e., VSIR(i,j), can also be obtained from the product of the parameters of the entire resistive network and the emission current.

[0047] In one embodiment, the step of obtaining the compensation value of the data signal based on the voltage across the two terminals of the organic light-emitting diode (OLED) and the full-area distributed voltage matrix of the negative power supply terminal VSS further includes: obtaining the potential influence coefficient of the driving transistor T1, wherein the potential influence coefficient is the ratio of the change in the source potential of the driving transistor to the change in the gate potential of the driving transistor; and obtaining the compensation value of the data signal based on the potential influence coefficient and the change in the source voltage of the driving transistor T1.

[0048] It should be noted that after the driving transistor T1 is manufactured, its potential influence coefficient is fixed. Therefore, this potential influence coefficient, μ, can be obtained through measurement and other methods.

[0049] In one embodiment, the step of obtaining the compensation value of the data signal based on the potential influence coefficient and the source voltage change of the driving transistor T1 includes: setting the potential influence coefficient, the source voltage change of the driving transistor T1, and the compensation value of the data signal as μ, ΔVs(i,j), and δ(i,j), respectively; then the compensation value of the data signal is obtained by formula (1-1):

[0050] δ(i,j)=(1-μ)×ΔVs(i,j)(1-1).

[0051] It should be noted that the change in gate voltage of driving transistor T1, i.e., ΔVg(i,j), can be obtained by formula (1-2):

[0052] ΔVg(i,j)=μ×ΔVs(i,j) (1-2)

[0053] Where △Vg(i,j) is the change in gate voltage of driving transistor T1. (i,j) are the row and column coordinates of the pixel circuit in the display panel.

[0054] The formula (1-3) for the light-emitting current driving transistor T1 is as follows:

[0055] Ids = K(Vg - Vs - Vth) 2 (1-3)

[0056] Due to the voltage drop across the negative terminal VSS of the power supply, equation (1-3) needs to be transformed into equation (1-4) as shown below:

[0057] Idrop=K[(Vg+ΔVg)-(Vs+ΔVs)-Vth] 2 (1-4)

[0058] Where K is a constant. From the comparison and analysis of formulas (1-3) and (1-4), it can be seen that the decrease in Idrop in formula (1-4) compared to Ids in formula (1-3) is due to the addition of ΔVg-ΔVs. Therefore, by superimposing the compensation value ΔVs-ΔVg on the data signal, the influence of the voltage drop at the negative terminal VSS of the power supply can be avoided, thereby improving the uniformity of the luminous current and brightness.

[0059] Substituting formula (1-2) into △Vs-△Vg, we can obtain the compensation value as (1-μ)*△Vs.

[0060] The result of the superposition of the data signal and the compensation value is Vdata'=Vdata+(1-μ)*△Vs.

[0061] Where μ is less than 1. Vdata is the data signal. Vdata' is the superposition result of the data signal and the compensation value.

[0062] In one embodiment, the step of obtaining the compensation value of the data signal based on the voltage across the two ends of the organic light-emitting diode OLED and the full-area distributed voltage matrix of the negative power supply terminal VSS further includes: obtaining a compensation value corresponding to the display color of the organic light-emitting diode OLED.

[0063] It should be noted that, since the characteristics of the driving transistor T1 for different display colors are different, such as the potential influence coefficient, the data signal connected to the pixel circuit of each display color adopts a corresponding different compensation value, which can further improve the brightness uniformity between the pixel circuits of each display color.

[0064] In one embodiment, the step of inputting the superposition result of the input data signal and the compensation value to the gate of the driving transistor T1 includes: creating a compensation table for each compensation value; calling the corresponding compensation value according to the gray level; calculating the superposition result of the data signal and the compensation value; and transmitting the superposition result to the gate of the driving transistor T1.

[0065] It should be noted that the above compensation table is created based on the row and column coordinates of each pixel circuit in the display panel and the correspondence between the data signal and the compensation value. The corresponding data signal can be retrieved based on the relationship between the actual displayed grayscale (Gray) and the data signal (Vdata), and then the corresponding compensation value can be retrieved through the data signal, thereby displaying the compensation of the data signal.

[0066] In one embodiment, this embodiment provides a display panel that performs the compensation method of at least one of the above embodiments.

[0067] It is understood that, since the display panel provided in this embodiment implements the compensation method in at least one of the above embodiments, it is also possible to establish a matrix relationship between the overall resistance network parameters and the light-emitting current and the overall distributed voltage matrix of the negative power supply terminal VSS based on the overall resistance network parameters of the power supply negative terminal VSS. The light-emitting current flowing through the driving transistor T1 and the organic light-emitting diode OLED is obtained according to the characteristic curve of the driving transistor T1. The voltage across the organic light-emitting diode OLED and the overall distributed voltage matrix of the negative power supply terminal VSS are determined according to the light-emitting current. The compensation value of the data signal is obtained based on the voltage across the organic light-emitting diode OLED and the overall distributed voltage matrix of the negative power supply terminal VSS. The superposition result of the data signal and the compensation value is input to the gate of the driving transistor T1. The voltage drop of the corresponding negative power supply terminal VSS can be offset by the compensation value of the data signal, which not only improves the brightness uniformity of each pixel circuit, but also improves the overall light-emitting brightness of each pixel circuit.

[0068] 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.

[0069] The display panel and compensation method 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 display panel includes an array of pixel circuits. The pixel circuits include a write transistor, a drive transistor, a sensing transistor, a storage capacitor, and an organic light-emitting diode. The write transistor controls the writing of data signals to the gate of the drive transistor. The drive transistor and the organic light-emitting diode are connected in series between the positive terminal and the negative terminal of the power supply. The negative terminal of the power supply is distributed throughout the display panel. The compensation method includes: Based on the parameters of the entire resistive network at the negative terminal of the power supply, a matrix relationship is established between the parameters of the entire resistive network, the luminous current, and the distributed voltage matrix of the entire surface at the negative terminal of the power supply. Based on the characteristic curve of the driving transistor, the luminous current flowing through the driving transistor and the organic light-emitting diode is obtained; Based on the luminous current, determine the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply; The compensation value of the data signal is obtained based on the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply. The result of superimposing the data signal and the compensation value is input to the gate of the driving transistor.

2. The compensation method according to claim 1, characterized in that, The step of establishing the matrix relationship between the parameters of the entire resistive network at the negative terminal of the power supply and the luminous current and the distributed voltage matrix of the entire resistive network at the negative terminal of the power supply includes: Establish the parameters of the full-surface resistor network at the negative terminal of the power supply; Based on the parameters of the entire resistive network, calculate the reciprocal matrix corresponding to the parameters of the entire resistive network; Establish the matrix relationship between the reciprocal matrix, the luminous current, and the full-area distributed voltage matrix at the negative terminal of the power supply.

3. The compensation method according to claim 2, characterized in that, The step of determining the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply based on the luminous current includes: Obtain the characteristic curve of the organic light-emitting diode; The voltage across the organic light-emitting diode is obtained based on the characteristic curve of the organic light-emitting diode and the luminous current.

4. The compensation method according to claim 3, characterized in that, The step of determining the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply based on the luminous current further includes: The whole-surface distributed voltage matrix is ​​obtained based on the luminous current, the reciprocal matrix, and the matrix relationship.

5. The compensation method according to claim 4, characterized in that, The step of obtaining the compensation value of the data signal based on the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply includes: Based on the full-area distributed voltage matrix of the negative terminals of the power supply, the equivalent voltage drop of each negative terminal of the power supply is obtained; The change in source voltage of the driving transistor is obtained by summing the equivalent voltage drop and the voltage across the organic light-emitting diode.

6. The compensation method according to claim 5, characterized in that, The step of obtaining the compensation value of the data signal based on the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply further includes: Obtain the potential influence coefficient of the driving transistor, wherein the potential influence coefficient is the ratio of the source potential change of the driving transistor to the gate potential change of the driving transistor; The compensation value of the data signal is obtained based on the potential influence coefficient and the source voltage change of the driving transistor.

7. The compensation method according to claim 6, characterized in that, The step of obtaining the compensation value of the data signal based on the potential influence coefficient and the source voltage change of the driving transistor includes: The potential influence coefficient, the source voltage change of the driving transistor, and the compensation value of the data signal are set to μ, ΔVs(i,j), and δ(i,j), respectively. The compensation value of the data signal is then obtained from formula (1-1): δ(i,j)=(1-μ)×ΔVs(i,j)(1-1).

8. The compensation method according to any one of claims 1 to 7, characterized in that, The step of obtaining the compensation value of the data signal based on the voltage across the organic light-emitting diode and the full-area distributed voltage matrix at the negative terminal of the power supply further includes: Based on the display color of the organic light-emitting diode, a compensation value corresponding to the display color is obtained.

9. The compensation method according to claim 8, characterized in that, The step of inputting the superposition result of the data signal and the compensation value to the gate of the driving transistor includes: Create a compensation table corresponding to each of the aforementioned compensation values; The corresponding compensation value is applied based on the grayscale level. Calculate the superposition result of the data signal and the compensation value; The superposition result is transmitted to the gate of the driving transistor.

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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