Voltage compensation method and device of display panel, display device and display terminal

Abstract

The embodiment of the invention provides a voltage compensation method and device of a display panel, a display device and a display terminal.The voltage compensation method of the display panel comprises the steps that in-plane equivalent total current of a target display panel is determined, and resistance corresponding to pixels to be compensated in the target display panel is determined; the in-plane equivalent total current represents the sum of the equivalent current of each pixel in the target display panel; according to the in-plane equivalent total current and the resistance of the to-be-compensated pixel, determining a resistance voltage drop compensation amount corresponding to the to-be-compensated pixel; obtaining a threshold voltage compensation amount corresponding to the pixel to be compensated; and performing voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount. According to the scheme of the invention, the voltage drop caused by the current flowing through the resistor and the difference of the threshold voltage of each pixel can be compensated at the same time, so that the brightness uniformity of the display panel can be improved, the color difference of the display panel is reduced, and the display effect of the display panel is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and in particular to a voltage compensation method and device for a display panel, a display device, and a display terminal. Background Art

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] In view of this, embodiments of the present application provide a voltage compensation method and device for a display panel, a display device, and a display terminal to at least partially solve the above-mentioned problems.

[0005] According to a first aspect of an embodiment of the present application, a voltage compensation method for a display panel is provided, comprising: determining an equivalent total current in a surface of a target display panel, and determining a resistance corresponding to a pixel to be compensated in the target display panel; the equivalent total current in a surface represents the sum of equivalent currents of each pixel in the target display panel; determining a resistance voltage drop compensation amount corresponding to the pixel to be compensated based on the equivalent total current in a surface and the resistance of the pixel to be compensated; obtaining a threshold voltage compensation amount corresponding to the pixel to be compensated; and performing voltage compensation on the pixel to be compensated based on the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0006] According to a second aspect of an embodiment of the present application, a voltage compensation device for a display panel is provided, comprising: a parameter determination module, used to determine an equivalent total current in a plane of a target display panel, and to determine a resistance corresponding to a pixel to be compensated in the target display panel; the equivalent total current in a plane represents the sum of equivalent currents of each pixel in the target display panel; a first calculation module, used to determine a resistance voltage drop compensation amount corresponding to the pixel to be compensated based on the equivalent total current in a plane and the resistance of the pixel to be compensated; an acquisition module, used to acquire a threshold voltage compensation amount corresponding to the pixel to be compensated; and a second calculation module, used to perform voltage compensation on the pixel to be compensated based on the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0007] According to a third aspect of an embodiment of the present application, a display device is provided, comprising: a display panel; a computer storage medium configured to store computer program instructions, the computer program instructions being used to execute the voltage compensation method as described in the first aspect of claim 1; and a processor configured to execute the computer program instructions so that the display panel performs voltage compensation.

[0008] According to a fourth aspect of an embodiment of the present application, a display terminal is provided, the display terminal comprising a terminal device body, and a display apparatus as described in the third aspect and arranged on the terminal device body.

[0009] According to the fifth aspect of an embodiment of the present application, there is provided an electronic device, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform an operation corresponding to the method described in the first aspect.

[0010] According to a sixth aspect of an embodiment of the present application, a computer storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the method described in the first aspect is implemented.

[0011] According to a seventh aspect of an embodiment of the present application, a computer program product is provided, comprising computer instructions, wherein the computer instructions instruct a computing device to perform operations corresponding to the method described in the first aspect.

[0012] According to the voltage compensation method, device, display device and display terminal of the display panel provided by the embodiment of the present application, the voltage compensation method of the display panel includes: determining the equivalent total current in the plane of the target display panel, and determining the resistance corresponding to the pixel to be compensated in the target display panel; the equivalent total current in the plane represents the sum of the equivalent currents of each pixel in the target display panel; determining the resistance voltage drop compensation amount corresponding to the pixel to be compensated according to the equivalent total current in the plane and the resistance of the pixel to be compensated; obtaining the threshold voltage compensation amount corresponding to the pixel to be compensated; and performing voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount. The scheme of the present application can simultaneously compensate for the voltage drop caused by the current flowing through the resistor and the difference in the threshold voltage of the pixel. By compensating for the voltage drop caused by the current flowing through the resistor, the brightness uniformity of the display panel displaying a high grayscale image can be ensured, and by compensating for the difference in the threshold voltage of the pixel, the brightness uniformity of the display panel displaying a low grayscale image can be ensured. Therefore, the scheme of this embodiment can improve the brightness uniformity of the display panel displaying the full grayscale domain, thereby reducing the color difference of the display panel and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is a flowchart of a voltage compensation method according to an embodiment of the present application;

[0015] Figure 2A and 2B A schematic diagram of a process of a voltage compensation method according to an embodiment of the present application;

[0016] Figure 3 This is a structural block diagram of a voltage compensation device according to an embodiment of the present application;

[0017] Figure 4 is a schematic diagram of the structure of a display terminal according to an embodiment of the present application;

[0018] Figure 5 It is a schematic diagram of the structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0020] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in the embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items.

[0021] It should be understood that in the description of the embodiments of the present application, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the schemes of the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0022] In addition, when an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, the element or layer may be directly on, directly connected to, or directly coupled to the other element or layer, or intervening elements or layers may be present. However, when an element or layer is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element or layer, there are no intervening elements or layers present.

[0023] The terms first, second, etc. are used to describe various elements, components, pixels, layers and / or parts, but these elements, components, pixels, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, pixel, layer and / or part from another element, component, pixel, layer and / or part.

[0024] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0025] The specific implementation of the embodiment of the present application is further explained below in conjunction with the accompanying drawings of the embodiment of the present application.

[0026] Figure 1 A flow chart of the steps of a voltage compensation method for a display panel according to an embodiment of the present application. According to a first aspect of an embodiment of the present application, a voltage compensation method for a display panel is provided, referring to Figure 1 As shown, the method includes steps S102, S104 and S106, specifically:

[0027] S102 , determining the total equivalent current in the plane of the target display panel, and determining the resistance corresponding to the pixel to be compensated in the target display panel.

[0028] The in-plane equivalent total current represents the sum of the equivalent currents of the pixels in the target display panel.

[0029] Exemplarily, the target display panel may be an OLED display panel, which is an organic light-emitting diode display panel. The OLED may be composed of a substrate, an anode, a hole transport layer, an organic light-emitting layer, an electron transport layer, a cathode, and other parts. The substrate is usually made of glass or flexible plastic and other materials to provide support for the entire device; the anode is generally made of transparent conductive materials (such as indium tin oxide, ITO) for injecting holes; the hole transport layer helps holes to be smoothly transferred to the organic light-emitting layer; the organic light-emitting layer is the core part, which is composed of a variety of organic materials. Different organic materials can emit light of different colors, that is, the organic light-emitting layer can include multiple pixels; the electron transport layer is responsible for transferring electrons to the organic light-emitting layer; and the cathode is used to inject electrons.

[0030] Equivalent current refers to a hypothetical current with a certain equivalent effect that replaces the actual more complex current situation in a specific circuit analysis or physical situation for the purpose of facilitating research, calculation or equivalent substitution. The effect produced by this equivalent current is equivalent to the replaced current in corresponding aspects. Therefore, in this embodiment, the equivalent current of each pixel in the target display panel can be determined, and the equivalent total current in the surface of the target display panel can be obtained by summing the equivalent current of each pixel. Among them, each pixel includes sub-pixels corresponding to three color channels, and the equivalent current of each pixel includes the equivalent current of each sub-pixel.

[0031] The pixel to be compensated may be any pixel in the target display panel, and this embodiment does not limit this. The resistance corresponding to each pixel in the target display panel is different, and the target display panel may be divided into regions in advance, and at least one pixel may be determined from each region to obtain multiple pixels. Afterwards, the resistance corresponding to multiple pixels may be obtained by calibration or the like, and stored, and this embodiment does not limit this. When performing voltage compensation, the resistance corresponding to the pixel to be compensated may be determined from the resistances corresponding to all pixels stored in advance, or the resistance corresponding to the pixel to be compensated may be calculated by the resistances corresponding to some pixels, and this embodiment does not limit this.

[0032] In some optional embodiments, determining the in-plane equivalent total current of the target display panel includes: obtaining a data voltage input to each pixel in the target display panel; determining the equivalent current of each pixel from a preset relationship table based on the data voltage of each pixel, the preset relationship table including a correspondence between different data voltages and equivalent currents; and summing the equivalent currents of each pixel to obtain the in-plane equivalent total current of the target display panel.

[0033] Exemplarily, the data voltage refers to the voltage signal provided by the driving circuit to each pixel in the display panel, and its main function is to control the display state of the pixel, thereby affecting the image content presented by the entire display panel. In the driving circuit of the display panel, a thin film transistor (TFT) is usually used to control the current of each pixel. The data voltage can be applied to the gate of the TFT, and the current from the source to the drain is controlled by changing the conduction degree of the TFT, thereby controlling the brightness of the pixel. In general, the higher the data voltage, the greater the conduction degree of the TFT, the greater the current passing through the pixel, and the brighter the pixel emits. Different data voltages can make the pixel present different gray levels. By controlling the size of the data voltage, a variety of grayscale displays of pixels from the darkest black to the brightest white can be achieved.

[0034] In this embodiment, the data voltage input to each pixel in the target display panel can be obtained first, and the data voltage of each pixel includes the data voltage of the sub-pixel contained in each pixel. Then, based on the data voltage of each pixel, the equivalent current of each pixel is searched from the preset relationship table. Here, refer to Figure 2A , the preset relationship table may include the correspondence between different data voltages and equivalent currents; the preset relationship table may be obtained by inputting different data voltages to the target display panel in advance, measuring the total current in the target display panel under different data voltages, and then determining the equivalent current corresponding to the different data voltages of each pixel through the total current and the number of pixels included in the target panel, and finally, generating a preset relationship table with the different data voltages and the corresponding equivalent currents of each pixel. Among them, for the same data voltage, the equivalent current of each pixel is the same. After obtaining the equivalent current of each pixel, the equivalent current of each pixel is summed up to obtain the in-plane equivalent total current of the target display panel.

[0035] In this embodiment, the equivalent current of each pixel is determined from a preset relationship table through the data voltage input by each pixel, and then the equivalent current of each pixel is summed to obtain the equivalent total current in the plane of the target display panel. The calculation process is simple and the calculation efficiency is high. In addition, this embodiment can quickly count the equivalent total current in the plane of the entire target display panel without counting the equivalent current in different regions. The processing process is simple and efficient.

[0036] In some optional embodiments, determining the in-plane equivalent total current of the target display panel includes: determining the in-plane equivalent total current corresponding to the target display panel displaying the current frame image; or determining the in-plane equivalent total current corresponding to the target display panel displaying the previous frame image; performing voltage compensation on pixels to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount, including: performing voltage compensation on pixels to be compensated corresponding to the current frame image according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0037] Exemplarily, when determining the in-plane equivalent total current of the target display panel, first, the in-plane equivalent total current can be calculated by an external processor that is communicatively connected to the target display panel, for example, the external processor can be a mobile phone processor. The external processor can pre-acquire the data voltage that the target display panel needs to input to display the current frame image, so that the in-plane equivalent total current corresponding to the target display panel displaying the current frame image can be determined, and then the obtained in-plane equivalent total current is sent to the target display panel, so that the target display panel can perform voltage compensation when displaying the current frame image, thereby improving the display effect of the current frame image.

[0038] Secondly, the in-plane equivalent total current can be calculated by the target display panel itself. In this case, it is necessary to determine the in-plane equivalent total current corresponding to the previous frame image displayed by the target display panel after the target display panel displays the previous frame image. Then, based on the obtained in-plane equivalent total current, voltage compensation is performed when the target display panel displays the current frame image, thereby improving the display effect of the current frame image.

[0039] In this embodiment, the in-plane equivalent total current corresponding to the current frame image displayed by the target display panel can be determined; or, the in-plane equivalent total current corresponding to the previous frame image displayed by the target display panel can be determined. Voltage compensation can be performed when the target display panel displays the current frame image, and different statistical methods of the in-plane equivalent total current can be applied according to different application scenarios.

[0040] S104 , determining a resistance voltage drop compensation amount corresponding to the pixel to be compensated according to the in-plane equivalent total current and the resistance of the pixel to be compensated.

[0041] Exemplarily, the calculation formula of the resistance voltage drop compensation amount corresponding to the pixel to be compensated can be I*R, where I is the equivalent total current in the plane, and R is the resistance of the pixel to be compensated. That is, the equivalent total current in the plane can be multiplied by the resistance of the pixel to be compensated to obtain the resistance voltage drop compensation amount corresponding to the pixel to be compensated.

[0042] S106 , obtaining a threshold voltage compensation amount corresponding to the pixel to be compensated.

[0043] Exemplarily, each pixel may correspond to a threshold voltage, and the threshold voltage of a pixel refers to the minimum voltage value that needs to be applied to enable the pixel to begin to produce a perceptible response (such as starting to emit light, changing the light transmittance state, etc., depending on the working mechanism of the specific display technology). In the production and manufacturing process of the display panel, different process conditions, material properties, production batches and other factors will cause differences in the threshold voltage of the pixel. Due to the differences in the threshold voltage of the pixel, different pixels will present different brightness or light transmittance states at the same voltage, causing the display screen to appear uneven. In this regard, in this embodiment, the difference between the threshold voltages of each pixel can be compensated by the threshold voltage compensation amount to improve the uniformity of the display.

[0044] The threshold voltage compensation amount corresponding to the pixel to be compensated can be determined in advance. The threshold voltage compensation amount corresponding to each pixel in the target display panel is different. The threshold voltage compensation amount corresponding to some pixels or all pixels in the target display panel can be obtained by calibration and stored. This embodiment does not limit this. When performing voltage compensation, the threshold voltage compensation amount corresponding to the pixel to be compensated can be determined from the threshold voltage compensation amounts corresponding to all pixels stored in advance, or the threshold voltage compensation amount corresponding to the pixel to be compensated can be calculated by the threshold voltage compensation amounts corresponding to some pixels. This embodiment does not limit this.

[0045] S108 , performing voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0046] When the display panel is working, a basic power supply voltage is usually provided to the pixel through a high-level power supply voltage (ELVDD). The high-level power supply voltage (ELVDD) is the basic power supply voltage for providing a driving current to the driving circuit in the display panel. It is responsible for providing enough energy to the pixel so that the pixel can emit light normally. However, due to the voltage drop caused by the metal wiring resistance and the difference between the threshold voltages of each pixel, the current distribution of each pixel is uneven, resulting in uneven brightness of each pixel. Therefore, the voltage compensation amount of this embodiment includes two parts, one is the resistance voltage drop compensation amount for compensating for the voltage drop caused by the resistor, and the other is the threshold voltage compensation amount for compensating for the difference between the threshold voltages.

[0047] The calculation formula of the voltage compensation amount in this embodiment can be I*R+ΔV th , where I*R is the resistance voltage drop compensation, ΔV this the threshold voltage compensation amount. For the pixel to be compensated, the resistance voltage drop compensation amount and the threshold voltage compensation amount corresponding to the pixel to be compensated can be summed to obtain the voltage compensation amount for the pixel to be compensated. The voltage compensation amount is used to perform voltage compensation on the pixel to be compensated. The voltage compensation amount can be added to the initial data voltage corresponding to the pixel to be compensated (for example, the initial data voltage corresponding to the current frame image) as the target data voltage of the pixel to be compensated. The target data voltage is applied to the pixel to be compensated, so that the brightness displayed by the pixel to be compensated meets the brightness requirement; or, the high-level power supply voltage (ELVDD) of the pixel to be compensated can be adjusted according to the voltage compensation amount to achieve voltage compensation for the pixel to be compensated. Here, adjusting the high-level power supply voltage (ELVDD) can reduce data operations and save power consumption.

[0048] In a specific embodiment, the pixel to be compensated includes sub-pixels corresponding to three color channels (R\G\B), which are R sub-pixels, G sub-pixels and B sub-pixels. In the process of calculating the resistance voltage drop compensation amount and the threshold voltage compensation amount of the pixel to be compensated by the above method, the resistance corresponding to each sub-pixel in the pixel to be compensated can be determined respectively, and the threshold voltage compensation amount corresponding to each sub-pixel in the pixel to be compensated can be obtained. Thereafter, the resistance voltage drop compensation amount corresponding to each sub-pixel is calculated based on the in-plane equivalent total current and the resistance corresponding to each sub-pixel in the pixel to be compensated. According to the resistance voltage drop compensation amount corresponding to each sub-pixel and the threshold voltage compensation amount corresponding to each sub-pixel, voltage compensation can be performed on each sub-pixel in the pixel to be compensated respectively.

[0049] In some optional embodiments, in step S102, determining the resistance corresponding to the pixel to be compensated in the target display panel includes: obtaining the calibrated resistance corresponding to the plurality of target pixels in the target display panel obtained by pre-calibration; determining the resistance corresponding to the pixel to be compensated based on the positional relationship between the plurality of target pixels and the pixel to be compensated, and the calibrated resistance corresponding to the plurality of target pixels. Afterwards, in step S106, obtaining the threshold voltage compensation amount corresponding to the pixel to be compensated includes: obtaining the calibrated threshold voltage compensation amount corresponding to the plurality of target pixels in the target display panel obtained by pre-calibration; determining the threshold voltage compensation amount corresponding to the pixel to be compensated based on the positional relationship between the plurality of target pixels and the pixel to be compensated, and the calibrated threshold voltage compensation amount corresponding to the plurality of target pixels.

[0050] Exemplarily, the multiple target pixels may be M*N pixels in the target display panel, and the pixel division may be flexibly set by a person skilled in the art according to actual conditions, and this embodiment does not limit this. The calibration resistance corresponding to the multiple target pixels may be pre-calibrated and stored. When determining the resistance corresponding to the pixel to be compensated, the calibration resistance corresponding to the multiple target pixels and the positional relationship between the multiple target pixels and the pixel to be compensated may be obtained. Afterwards, according to the positional relationship between the multiple target pixels and the pixel to be compensated, and the calibration resistance corresponding to the multiple target pixels, the resistance corresponding to the pixel to be compensated is calculated. Similarly, the calibration threshold voltage compensation amount corresponding to the multiple target pixels may also be pre-calibrated and stored. When determining the threshold voltage compensation amount corresponding to the pixel to be compensated, the calibration threshold voltage compensation amount corresponding to the multiple target pixels and the positional relationship between the multiple target pixels and the pixel to be compensated may be obtained. Afterwards, according to the positional relationship between the multiple target pixels and the pixel to be compensated, and the calibration threshold voltage compensation amount corresponding to the multiple target pixels, the calibration threshold voltage compensation amount corresponding to the pixel to be compensated is calculated.

[0051] In this embodiment, the resistance corresponding to the pixel to be compensated can be determined by the calibration resistance corresponding to the multiple target pixels in the target display panel obtained by pre-calibration, and the positional relationship between the multiple target pixels and the pixel to be compensated. The threshold voltage compensation amount corresponding to the pixel to be compensated can also be determined by using the calibration threshold voltage compensation amount corresponding to the multiple target pixels in the target display panel obtained by pre-calibration, and the positional relationship between the multiple target pixels and the pixel to be compensated. The calculation method is simple and the calculation efficiency is high. In addition, in this embodiment, it is only necessary to calibrate the calibration resistance and the calibration threshold voltage compensation amount corresponding to the multiple target pixels, and the resistance and threshold voltage compensation amount of any pixel to be compensated can be calculated, which reduces the workload of the calibration process.

[0052] In some optional embodiments, based on the positional relationship between multiple target pixels and the pixels to be compensated, and the calibrated resistances corresponding to the multiple target pixels, the resistance corresponding to the pixel to be compensated is determined, including: using a bilinear interpolation algorithm, combined with the positional relationship between the multiple target pixels and the pixels to be compensated, and the calibrated resistances corresponding to the multiple target pixels, to calculate and obtain the resistance corresponding to the pixel to be compensated; based on the positional relationship between the multiple target pixels and the pixels to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the multiple target pixels, the threshold voltage compensation amount corresponding to the pixel to be compensated is determined, including: using a bilinear interpolation algorithm, combined with the positional relationship between the multiple target pixels and the pixels to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the multiple target pixels, to determine the threshold voltage compensation amount corresponding to the pixel to be compensated. Preferably, according to the position of the pixel to be compensated, the calibrated resistance / calibrated threshold voltage compensation amount of multiple target pixels surrounding the pixel to be compensated is determined from the calibrated resistance / calibrated threshold voltage compensation amount of multiple pixels in the pre-calibrated target display panel.

[0053] Exemplarily, the display panel can be divided into multiple areas, and at least one pixel is selected from each area for resistance calibration and threshold voltage compensation amount calibration, so that the calibrated resistance and calibrated threshold voltage compensation amount corresponding to the multiple pixels can be obtained. Afterwards, according to the position of the pixel to be compensated, multiple target pixels surrounding the pixel to be compensated can be determined from the multiple pixels, and the number of target pixels is greater than or equal to 4, so that the calibrated resistance and calibrated threshold voltage compensation amount corresponding to the multiple target pixels surrounding the pixel to be compensated can be obtained. A linear interpolation algorithm can be used to calculate the resistance and threshold voltage compensation amount corresponding to the pixel to be compensated, and the linear interpolation algorithm can be a bilinear interpolation algorithm. For example, referring to Figure 2B , assuming that the resistance or threshold voltage compensation amount of the pixel to be compensated can be expressed as P, that is, the position of the pixel to be compensated is point P, then it can be determined that the positions of the multiple target pixels can be points Q11, Q12, Q21, and Q22, assuming that the calibration resistance or calibration threshold voltage compensation amount of the multiple target pixels can be expressed as Q11, Q12, Q21, and Q22, the process of linear interpolation calculation based on the positional relationship between the multiple target pixels and the pixels to be compensated, and the calibration resistance corresponding to the multiple target pixels is as follows:

[0054] R1(x,y)=Q11*(x-x2) / (x1–x2)+Q12*(x1–x) / (x1–x2);

[0055] R2(x,y)=Q21*(x-x2) / (x1–x2)+Q22*(x1–x) / (x1–x2);

[0056] P(x,y)=R1*(y–y2) / (y1–y2)+R2*(y1–y) / (y1–y2).

[0057] By the above method, the resistance and threshold voltage compensation amount corresponding to the pixel to be compensated can be calculated respectively.

[0058] In this embodiment, bilinear interpolation calculation can be performed based on the positional relationship between multiple target pixels and the pixels to be compensated, and the calibrated resistances corresponding to the multiple target pixels to obtain the resistances corresponding to the pixels to be compensated; similarly, bilinear interpolation calculation can be performed based on the positional relationship between multiple target pixels and the pixels to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the multiple target pixels to obtain the threshold voltage compensation amounts corresponding to the pixels to be compensated. The calculation process is simple and the calculation efficiency is high.

[0059] In some optional embodiments, the process of calibrating the calibration threshold voltage compensation amount corresponding to multiple target pixels in the target display panel includes: obtaining first display brightness data corresponding to multiple target pixels when the target display panel is in a first target state; the first target state indicates that the target display panel is in a state of displaying a low grayscale image; the brightness level of the low grayscale image is less than a first preset brightness level threshold; and determining the calibration threshold voltage compensation amount corresponding to the multiple target pixels according to the first display brightness data corresponding to the multiple target pixels and the preset first reference brightness data. Preferably, the calibration threshold voltage compensation amount corresponding to the multiple target pixels is determined according to the difference between the first display brightness data corresponding to the multiple target pixels and the preset first reference brightness data.

[0060] Exemplarily, grayscale refers to different gray levels in an image, also known as grayscale, grayscale level or grayscale range, which is usually represented by numbers to indicate the brightness or darkness of pixels in an image, and can usually include 256 grayscale levels (i.e., 0-255 levels), 1024 grayscale levels (0-1023 levels), 4096 grayscale levels (0-4095 levels), 65536 grayscale levels (0-65535 levels), and so on. Low grayscale refers to the relatively dark part of the brightness level in the entire grayscale range, that is, the grayscale level pixels close to the black end. The brightness level of the low grayscale picture of this embodiment is less than the first preset brightness level threshold, that is, the picture with darker brightness or close to the minimum brightness level, such as a picture with a brightness level of 16. The first preset brightness level threshold can be flexibly set by those skilled in the art according to actual conditions, and this embodiment does not limit this.

[0061] The first display brightness data corresponding to a plurality of preset target pixels can be obtained by photographing the target display panel when the target display panel displays a low grayscale image. Afterwards, the brightness difference between the first display brightness data corresponding to the plurality of target pixels and the preset first reference brightness data can be calculated, and then the calibration threshold voltage compensation amount corresponding to the plurality of target pixels can be determined based on the brightness difference. When the target display panel displays a low grayscale image, the first display brightness data can be used to indicate the actual threshold voltage corresponding to the plurality of target pixels, and the first reference brightness data can be used to indicate the theoretical threshold voltage corresponding to the plurality of target pixels. The calibration threshold voltage compensation amount can be understood as the difference between the actual threshold voltage and the theoretical threshold voltage.

[0062] In this embodiment, when the target display panel is used to display a low grayscale image, the display brightness is low, and the current is small, that is, the voltage drop caused by the current flowing through the resistor has a small effect on the brightness. Therefore, the main influencing factor corresponding to the low grayscale brightness is the threshold voltage compensation amount. In this case, the first display brightness data corresponding to multiple target pixels is obtained; and then the calibration threshold voltage compensation amount corresponding to the multiple target pixels is determined according to the first display brightness data corresponding to the multiple target pixels and the preset first reference brightness data, which can improve the accuracy of determining the calibration threshold voltage compensation amount. Furthermore, the threshold voltage compensation amount of the pixel to be compensated is subsequently determined by the calibration threshold voltage compensation amount of the multiple target pixels, which improves the accuracy of the threshold voltage compensation amount.

[0063] In some optional embodiments, the process of calibrating the calibration resistors corresponding to multiple target pixels in the target display panel includes: performing voltage compensation on the multiple target pixels based on the calibration threshold voltage compensation amounts of the multiple target pixels in the target display panel; obtaining second display brightness data corresponding to the multiple target pixels when the target display panel is in a second target state; the second target state represents that the target display panel is in a state of displaying a high grayscale image; the brightness level of the high grayscale image is greater than a second preset brightness level threshold; determining the calibration resistor voltage compensation amounts corresponding to the multiple target pixels based on the second display brightness data corresponding to the multiple target pixels and the preset second reference brightness data; determining the calibration resistors corresponding to the multiple target pixels based on the calibration resistor voltage compensation amounts corresponding to the multiple target pixels and the pre-acquired calibration in-plane equivalent total current of the target display panel, wherein the in-plane equivalent total current represents the in-plane equivalent total current of the target display panel in the second target state.

[0064] Exemplarily, the brightness level of the high grayscale picture of this embodiment is greater than the second preset brightness level threshold, that is, the picture with high brightness or close to the maximum brightness level, for example, the picture with a brightness level of 255. The second preset brightness level threshold is greater than the first preset brightness level threshold, and can be flexibly set by those skilled in the art according to actual conditions, and this embodiment does not limit this.

[0065] First, voltage compensation is performed on multiple target pixels according to the calibration threshold voltage compensation amount of multiple target pixels in the target display panel. Afterwards, the second display brightness data corresponding to the preset multiple target pixels can be obtained by photographing the target display panel when the target display panel displays a high grayscale image. Afterwards, the brightness difference between the second display brightness data corresponding to the multiple target pixels and the preset second reference brightness data can be calculated, and then the calibration resistance voltage compensation amount corresponding to the multiple target pixels can be determined based on the brightness difference. Finally, the equivalent total current in the calibration surface corresponding to the target display panel when displaying a high grayscale image is obtained, and the calibration resistance corresponding to the multiple target pixels is calculated according to the calibration resistance voltage compensation amount corresponding to the multiple target pixels and the equivalent total current in the calibration surface.

[0066] When the target display panel displays a high grayscale image, the second display brightness data can be used to indicate the actual resistance voltage corresponding to the plurality of target pixels, and the second reference brightness data can be used to indicate the theoretical resistance voltage corresponding to the plurality of target pixels. The calibration resistance voltage compensation amount can be understood as the difference between the actual resistance voltage and the theoretical resistance voltage.

[0067] In this embodiment, voltage compensation is performed on multiple target pixels through the calibration threshold voltage compensation amount of multiple target pixels in the target display panel, and the influence of the difference in threshold voltage on brightness can be removed. Afterwards, when the target display panel is used to display a high grayscale picture, the display brightness is high, and the current is large, that is, the voltage drop caused by the current flowing through the resistor has a greater influence on the brightness. Therefore, the main influencing factor corresponding to the high grayscale brightness is the resistor voltage compensation amount. In this case, the second display brightness data corresponding to the multiple target pixels is obtained; the calibration resistor voltage compensation amount corresponding to the multiple target pixels is determined according to the second display brightness data corresponding to the multiple target pixels and the preset second reference brightness data; the calibration resistor corresponding to the multiple target pixels is determined according to the calibration resistor voltage compensation amount corresponding to the multiple target pixels and the pre-acquired equivalent total current in the calibration surface of the target display panel, so as to improve the accuracy of determining the calibration resistor.

[0068] Reference Figure 1 According to an embodiment of the present application, a voltage compensation method for a display panel is provided, which specifically includes the following steps:

[0069] S102, determining an in-plane equivalent total current of a target display panel, and determining a resistance corresponding to a pixel to be compensated in the target display panel; the in-plane equivalent total current represents the sum of equivalent currents of each pixel in the target display panel;

[0070] S104, determining a resistance voltage drop compensation amount corresponding to the pixel to be compensated according to the in-plane equivalent total current and the resistance of the pixel to be compensated;

[0071] S106, obtaining a threshold voltage compensation amount corresponding to the pixel to be compensated;

[0072] S108 , performing voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0073] In summary, the voltage compensation method of this embodiment determines the equivalent total current in the surface of the target display panel, and determines the resistance corresponding to the pixel to be compensated in the target display panel; then determines the resistance voltage drop compensation amount corresponding to the pixel to be compensated according to the equivalent total current in the surface and the resistance of the pixel to be compensated; then, obtains the threshold voltage compensation amount corresponding to the pixel to be compensated; finally, performs voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount. This scheme can simultaneously compensate for the voltage drop caused by the current flowing through the resistor and the difference in the threshold voltage of the pixel. By compensating for the voltage drop caused by the current flowing through the resistor, the brightness uniformity of the display panel displaying high grayscale images can be ensured, and by compensating for the difference in the threshold voltage of the pixel, the brightness uniformity of the display panel displaying low grayscale images can be ensured. Therefore, the scheme of this embodiment can improve the brightness uniformity of the display panel displaying the full grayscale domain, thereby reducing the color difference of the display panel and improving the display effect of the display panel.

[0074] Reference Figure 3 , shows a structural block diagram of a voltage compensation device for a display panel according to an exemplary embodiment of the present application.

[0075] The voltage compensation device for a display panel in this embodiment includes a parameter determination module 302 , a first calculation module 304 , an acquisition module 306 and a second calculation module 308 .

[0076] Among them, the parameter determination module 302 is used to determine the in-plane equivalent total current of the target display panel, and to determine the resistance corresponding to the pixel to be compensated in the target display panel; the in-plane equivalent total current represents the sum of the equivalent currents of each pixel in the target display panel; the first calculation module 304 is used to determine the resistance voltage drop compensation amount corresponding to the pixel to be compensated based on the in-plane equivalent total current and the resistance of the pixel to be compensated; the acquisition module 306 is used to obtain the threshold voltage compensation amount corresponding to the pixel to be compensated; the second calculation module 308 is used to perform voltage compensation on the pixel to be compensated based on the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0077] In some optional embodiments, the parameter determination module 302 also includes: obtaining the calibration resistance corresponding to multiple target pixels in the target display panel obtained in advance; determining the resistance corresponding to the pixel to be compensated based on the positional relationship between the multiple target pixels and the pixels to be compensated, and the calibration resistance corresponding to the multiple target pixels; the acquisition module 306 also includes: obtaining the calibration threshold voltage compensation amount corresponding to the multiple target pixels in the target display panel obtained in advance; determining the threshold voltage compensation amount corresponding to the pixel to be compensated based on the positional relationship between the multiple target pixels and the pixels to be compensated, and the calibration threshold voltage compensation amount corresponding to the multiple target pixels.

[0078] In some optional embodiments, the parameter determination module 302 also includes: using a bilinear interpolation algorithm, combining the positional relationship between multiple target pixels and the pixels to be compensated, and the calibrated resistances corresponding to the multiple target pixels to calculate, to obtain the resistance corresponding to the pixels to be compensated; the acquisition module 306 also includes: using a bilinear interpolation algorithm, combining the positional relationship between multiple target pixels and the pixels to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the multiple target pixels, to determine the threshold voltage compensation amount corresponding to the pixels to be compensated; preferably, according to the position of the pixel to be compensated, the calibrated resistance / calibrated threshold voltage compensation amount of the multiple target pixels surrounding the pixel to be compensated is determined from the calibrated resistance / calibrated threshold voltage compensation amounts of the multiple pixels in the pre-calibrated target display panel.

[0079] In some optional embodiments, the parameter determination module 302 also includes: obtaining a data voltage input for each pixel in the target display panel; determining an equivalent current of each pixel from a preset relationship table based on the data voltage of each pixel, the preset relationship table including a correspondence between different data voltages and equivalent currents; and summing the equivalent current of each pixel to obtain an equivalent total current within the surface of the target display panel.

[0080] In some optional embodiments, the device of this embodiment also includes a calibration module, which is used to: obtain first display brightness data corresponding to multiple target pixels when the target display panel is in a first target state; the first target state represents that the target display panel is in a state of displaying a low grayscale image; an image in which the brightness level of the low grayscale image is less than a first preset brightness level threshold; determine the calibration threshold voltage compensation amount corresponding to the multiple target pixels based on the first display brightness data corresponding to the multiple target pixels and the preset first reference brightness data; preferably, determine the calibration threshold voltage compensation amount corresponding to the multiple target pixels based on the difference between the first display brightness data corresponding to the multiple target pixels and the preset first reference brightness data.

[0081] In some optional embodiments, the calibration module is also used to: perform voltage compensation on multiple target pixels based on the calibration threshold voltage compensation amount of multiple target pixels in the target display panel; obtain second display brightness data corresponding to multiple target pixels when the target display panel is in a second target state; the second target state represents that the target display panel is in a state of displaying a high grayscale image; the brightness level of the high grayscale image is greater than the image of a second preset brightness level threshold; determine the calibration resistance voltage compensation amount corresponding to the multiple target pixels according to the second display brightness data corresponding to the multiple target pixels and the preset second reference brightness data; determine the calibration resistance corresponding to the multiple target pixels according to the calibration resistance voltage compensation amount corresponding to the multiple target pixels and the pre-acquired calibration in-plane equivalent total current of the target display panel, and the in-plane equivalent total current represents the in-plane equivalent total current of the target display panel in the second target state.

[0082] In some optional embodiments, the parameter determination module 302 also includes: determining the in-plane equivalent total current corresponding to the target display panel displaying the current frame image; or determining the in-plane equivalent total current corresponding to the target display panel displaying the previous frame image; performing voltage compensation on the pixels to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount, including: performing voltage compensation on the pixels to be compensated corresponding to the current frame image according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

[0083] The voltage compensation device of this embodiment is used to implement the corresponding voltage compensation method in the multiple method embodiments of the first aspect, and has the beneficial effects of the corresponding method embodiments, which will not be described in detail here. In addition, the functional implementation of each module in the voltage compensation device of this embodiment can refer to the description of the corresponding part in the aforementioned method embodiment, which will not be described in detail here.

[0084] According to a third aspect of an embodiment of the present application, a display device is also provided, comprising: a display panel; a computer storage medium configured to store computer program instructions, the computer program instructions being used to execute the voltage compensation method as described in the first aspect of claim 1; and a processor configured to execute the computer program instructions so that the display panel performs voltage compensation.

[0085] According to a fourth aspect of an embodiment of the present application, a display terminal is further provided, which includes a terminal device body and a display device arranged on the terminal device body, and the display screen can be the display device as described above.

[0086] An exemplary display terminal is as follows Figure 4As shown, it includes a terminal device body 401 and a display device 402. The display device 402 is disposed on the terminal device body 401 and is electrically connected to the terminal device body 401. The display device 402 is the display device described in the above embodiment, and is used to display static images or dynamic images.

[0087] Exemplarily, the above-mentioned display terminal can be implemented in the form of various electronic devices such as mobile phones, tablet computers, handheld computers, PADs, etc.

[0088] According to a fifth aspect of an embodiment of the present application, there is provided an electronic device, comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; the memory is used to store a computer program; and the processor is used to execute the voltage compensation method described in the first aspect above by running the computer program stored in the memory.

[0089] Figure 5 1 shows a block diagram of an optional electronic device in an embodiment of the present application. The present application embodiment does not limit the specific implementation of the electronic device 500. As an example, refer to Figure 5 The electronic device 500 provided in the embodiment of the present application includes: a processor 502, a communication interface 504, a memory 506, and a communication bus 508. Among them:

[0090] The processor 502 , the communication interface 504 , and the memory 506 communicate with each other via a communication bus 508 .

[0091] The communication interface 504 is used to communicate with other electronic devices or servers.

[0092] The processor 502 is used to execute the computer program 510, and specifically can execute the relevant steps in any of the above-mentioned voltage compensation method embodiments.

[0093] Specifically, the computer program 510 may include program codes including computer operation instructions.

[0094] The processor 502 may be a CPU, or a GPU (Graphic Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the smart device may be processors of the same type, such as one or more CPUs; or may be processors of different types, such as one or more CPUs and one or more ASICs.

[0095] The memory 506 is used to store the computer program 510. The memory 506 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0096] The computer program 510 may be specifically configured to enable the processor 502 to execute the voltage compensation method in any of the aforementioned embodiments.

[0097] The specific implementation of each step in the computer program 510 can refer to the corresponding description of the corresponding steps and units in any of the above-mentioned voltage compensation method embodiments, which will not be repeated here. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described devices and modules can refer to the corresponding process description in the above-mentioned method embodiments, which will not be repeated here.

[0098] The electronic device 500 in the embodiment of the present application has been described in detail in the aforementioned voltage compensation method embodiment, so its related contents and beneficial effects can be understood with reference to the aforementioned method embodiment and will not be described in detail here.

[0099] According to the sixth aspect of the embodiments of the present application, the embodiments of the present application further provide a computer storage medium on which a computer program is stored, and when the computer program is executed by a processor, the voltage compensation method described in any of the aforementioned multiple method embodiments is implemented. The computer storage medium includes, but is not limited to: a compact disc read-only memory (CD-ROM), a random access memory (RAM), a floppy disk, a hard disk or a magneto-optical disk, etc.

[0100] According to the seventh aspect of the embodiments of the present application, the embodiments of the present application further provide a computer program product, including a computer program, which, when executed by a processor, implements the voltage compensation method as described in any one of the above-mentioned multiple method embodiments.

[0101] The electronic device 800 / computer storage medium / computer program product embodiment in the embodiment of the present application has been described in detail in the aforementioned voltage compensation method embodiment, so its related content and beneficial effects can be understood with reference to the above-mentioned method embodiment and will not be repeated here.

[0102] It should be pointed out that, according to the needs of implementation, the various components / steps described in the embodiments of the present application can be split into more components / steps, or two or more components / steps or partial operations of components / steps can be combined into new components / steps to achieve the purpose of the embodiments of the present application.

[0103] The above-mentioned method according to the embodiment of the present application can be implemented in hardware, firmware, or implemented as software or computer code that can be stored in a recording medium (such as a CD-ROM, RAM, floppy disk, hard disk or magneto-optical disk), or implemented as a computer code originally stored in a remote recording medium or a non-temporary machine-readable medium downloaded through a network and stored in a local recording medium, so that the method described herein can be stored in such software processing on a recording medium using a general-purpose computer, a dedicated processor or programmable or dedicated hardware (such as an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA)). It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component (e.g., a random access memory (RAM), a read-only memory (ROM), a flash memory, etc.) that can store or receive software or computer code, and when the software or computer code is accessed and executed by a computer, a processor or hardware, the method described herein is implemented. In addition, when a general-purpose computer accesses the code for implementing the method shown here, the execution of the code converts the general-purpose computer into a dedicated computer for executing the method shown here.

[0104] Those of ordinary skill in the art will appreciate that the units and method steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for specific applications, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

[0105] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". It should be noted that the concepts of "first", "second", etc. mentioned in the embodiments of the present application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units. It should be noted that the modifications of "one" and "multiple" mentioned in the embodiments of the present application are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0106] The above implementation methods are only used to illustrate the embodiments of the present application, and are not limitations on the embodiments of the present application. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the embodiments of the present application. Therefore, all equivalent technical solutions also belong to the scope of the embodiments of the present application. The scope of patent protection of the embodiments of the present application should be limited by the claims.

Claims

1. A voltage compensation method for a display panel, characterized in that: include: Determine an in-plane equivalent total current of a target display panel, and determine a resistance corresponding to a pixel to be compensated in the target display panel; the in-plane equivalent total current represents the sum of equivalent currents of each pixel in the target display panel; Determining a resistance voltage drop compensation amount corresponding to the pixel to be compensated according to the in-plane equivalent total current and the resistance of the pixel to be compensated; Obtaining a threshold voltage compensation amount corresponding to the pixel to be compensated; Voltage compensation is performed on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

2. The method according to claim 1, characterized in that The determining the resistance corresponding to the pixel to be compensated in the target display panel includes: Acquire pre-calibrated calibration resistances corresponding to a plurality of target pixels in the target display panel; Determine the resistance corresponding to the pixel to be compensated based on the positional relationship between the plurality of target pixels and the pixel to be compensated, and the calibration resistance corresponding to the plurality of target pixels; The obtaining of the threshold voltage compensation amount corresponding to the pixel to be compensated includes: Acquire a pre-calibrated threshold voltage compensation amount corresponding to a plurality of target pixels in the target display panel; Based on the positional relationship between the plurality of target pixels and the pixels to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the plurality of target pixels, the threshold voltage compensation amounts corresponding to the pixels to be compensated are determined.

3. The method according to claim 2, characterized in that The determining the resistance corresponding to the pixel to be compensated based on the positional relationship between the plurality of target pixels and the pixel to be compensated and the calibration resistance corresponding to the plurality of target pixels comprises: A bilinear interpolation algorithm is used to calculate the resistance corresponding to the pixel to be compensated by combining the positional relationship between the plurality of target pixels and the pixel to be compensated and the calibration resistance corresponding to the plurality of target pixels; The determining the threshold voltage compensation amount corresponding to the pixel to be compensated based on the positional relationship between the plurality of target pixels and the pixel to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the plurality of target pixels, comprises: Using a bilinear interpolation algorithm, combined with the positional relationship between the plurality of target pixels and the pixels to be compensated, and the calibrated threshold voltage compensation amounts corresponding to the plurality of target pixels, to determine the threshold voltage compensation amount corresponding to the pixels to be compensated; Preferably, according to the position of the pixel to be compensated, the calibration resistance / calibration threshold voltage compensation amount of multiple target pixels surrounding the pixel to be compensated is determined from the pre-calibrated calibration resistance / calibration threshold voltage compensation amounts of multiple pixels in the target display panel.

4. The method according to any one of claims 1 to 3, characterized in that: The determining of the in-plane equivalent total current of the target display panel comprises: Acquiring a data voltage input to each pixel in a target display panel; Based on the data voltage of each pixel, determining the equivalent current of each pixel from a preset relationship table, wherein the preset relationship table includes a correspondence between different data voltages and equivalent currents; The equivalent current of each pixel is summed to obtain the in-plane equivalent total current of the target display panel.

5. The method according to claim 2, characterized in that: The process of calibrating the calibration threshold voltage compensation amounts corresponding to a plurality of target pixels in the target display panel includes: Acquire first display brightness data corresponding to the plurality of target pixels when the target display panel is in a first target state; the first target state indicates that the target display panel is in a state of displaying a low grayscale image; and the brightness level of the low grayscale image is less than a first preset brightness level threshold; Determining calibration threshold voltage compensation amounts corresponding to the plurality of target pixels according to first display brightness data corresponding to the plurality of target pixels and preset first reference brightness data; Preferably, the calibration threshold voltage compensation amounts corresponding to the plurality of target pixels are determined according to the difference between the first display brightness data corresponding to the plurality of target pixels and the preset first reference brightness data.

6. The method according to claim 5, characterized in that The process of calibrating calibration resistors corresponding to a plurality of target pixels in the target display panel includes: Based on the calibrated threshold voltage compensation amounts of the plurality of target pixels in the target display panel, voltage compensation is performed on the plurality of target pixels; Acquire second display brightness data corresponding to the plurality of target pixels when the target display panel is in a second target state; the second target state indicates that the target display panel is in a state of displaying a high grayscale image; and the brightness level of the high grayscale image is greater than a second preset brightness level threshold; Determining calibration resistance voltage compensation amounts corresponding to the plurality of target pixels according to second display brightness data corresponding to the plurality of target pixels and preset second reference brightness data; The calibration resistances corresponding to the multiple target pixels are determined based on the calibration resistance voltage compensation amounts corresponding to the multiple target pixels and the pre-acquired calibration in-plane equivalent total current of the target display panel, wherein the in-plane equivalent total current represents the in-plane equivalent total current of the target display panel in the second target state.

7. The method according to claim 1, characterized in that The determining of the in-plane equivalent total current of the target display panel comprises: Determine the equivalent total current in the target display panel corresponding to the current frame image; or, Determine the equivalent total current in the surface of the target display panel corresponding to the previous frame of image; The step of performing voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount comprises: Voltage compensation is performed on the pixel to be compensated corresponding to the current frame image according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

8. A voltage compensation device for a display panel, characterized in that: include: A parameter determination module, used to determine an equivalent total current in a target display panel, and to determine a resistance corresponding to a pixel to be compensated in the target display panel; the equivalent total current in a target display panel represents a sum of equivalent currents of each pixel in the target display panel; A first calculation module, used to determine the resistance voltage drop compensation amount corresponding to the pixel to be compensated according to the in-plane equivalent total current and the resistance of the pixel to be compensated; An acquisition module, used for acquiring a threshold voltage compensation amount corresponding to the pixel to be compensated; The second calculation module is used to perform voltage compensation on the pixel to be compensated according to the resistance voltage drop compensation amount and the threshold voltage compensation amount.

9. A display device, characterized in that: The display device comprises: Display panel; A computer storage medium configured to store computer program instructions for executing the voltage compensation method according to any one of claims 1 to 8; and The processor is configured to execute the computer program instructions to enable the display panel to perform voltage compensation.

10. A display terminal, characterized in that: The display terminal includes a terminal device body, and a display apparatus as claimed in claim 9 arranged on the terminal device body.

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