Image display method, image display structure, and display device

Abstract

An image display method is applied to a display device, and the display device includes a plurality of sub-pixels. The image display method includes: establishing a corresponding relationship table between threshold voltages of the sub-pixels and compensation voltages; the corresponding relationship table includes at least one adjustment interval, the adjustment interval includes a first threshold voltage end point value and a second threshold voltage end point value, the first threshold voltage end point value is less than the second threshold voltage end point value; and the compensation voltage is a constant value in the adjustment interval. The threshold voltage of each sub-pixel is obtained. According to the corresponding relationship table, the adjustment interval in which the threshold voltage is located is determined. According to the corresponding relationship table and the adjustment interval, the compensation voltage corresponding to the threshold voltage is obtained. In the case that the display device displays a black picture, the data voltage required by the sub-pixel is determined according to the threshold voltage and the compensation voltage.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to an image display method, an image display structure, a display device, and a computer-readable storage medium. Background Technology

[0002] Organic light-emitting diodes (OLEDs) have been widely used in the display field due to their advantages such as self-illumination, low driving voltage, high luminous efficiency, fast response speed, and flexible display capabilities. Summary of the Invention

[0003] On one hand, an image display method is provided, applied to a display device. The display device includes a plurality of sub-pixels. The image display method includes: establishing a correspondence table between threshold voltages and compensation voltages of sub-pixels; the correspondence table includes at least one adjustment interval, the adjustment interval including a first threshold voltage endpoint value and a second threshold voltage endpoint value, wherein the first threshold voltage endpoint value is less than the second threshold voltage endpoint value; within the adjustment interval, the compensation voltage is a constant value. The threshold voltage of each sub-pixel is obtained. Based on the correspondence table, the adjustment interval in which the threshold voltage is located is determined. Based on the correspondence table and the adjustment interval, the compensation voltage corresponding to the threshold voltage is obtained. When the display device needs to display a black screen, the data voltage required by the sub-pixel is determined based on the threshold voltage and the compensation voltage.

[0004] In some embodiments, the number of adjustment intervals is multiple. Two adjacent adjustment intervals are respectively designated as a first adjustment interval and a second adjustment interval. The average value of the threshold voltage corresponding to the first adjustment interval is less than the average value of the threshold voltage corresponding to the second adjustment interval. The compensation voltage corresponding to the first adjustment interval is less than the compensation voltage corresponding to the second adjustment interval.

[0005] In some embodiments, the plurality of sub-pixels includes red sub-pixels, green sub-pixels, and blue sub-pixels. The correspondence table includes the correspondence between threshold voltages and compensation voltages of different colored sub-pixels. Determining the adjustment range in which the threshold voltage falls includes: determining the color displayed by the sub-pixel; determining the correspondence corresponding to the color displayed by the sub-pixel; and determining the adjustment range in which the threshold voltage falls within the correspondence based on the threshold voltage.

[0006] In some embodiments, the correspondence between the blue sub-pixels includes a first minimum threshold voltage endpoint value; the correspondence between the red sub-pixels includes a second minimum threshold voltage endpoint value; and the correspondence between the green sub-pixels includes a third minimum threshold voltage endpoint value. The first minimum threshold voltage endpoint value is greater than the second minimum threshold voltage endpoint value; the first minimum threshold voltage endpoint value is greater than the third minimum threshold voltage endpoint value; and the second minimum threshold voltage endpoint value and the third minimum threshold voltage endpoint value are approximately equal.

[0007] In some embodiments, the correspondence between the blue sub-pixels includes a first maximum compensation voltage value; the correspondence between the red sub-pixels includes a second maximum compensation voltage value; and the correspondence between the green sub-pixels includes a third maximum compensation voltage value. The first maximum compensation voltage value is less than the second maximum compensation voltage value; the first maximum compensation voltage value is less than the third maximum compensation voltage value; and the second maximum compensation voltage value and the third maximum compensation voltage value are approximately equal.

[0008] In some embodiments, the plurality of sub-pixels further includes: white sub-pixels. The correspondence relationship corresponding to the white sub-pixels includes a fourth minimum threshold voltage endpoint value. Wherein, when the correspondence relationship corresponding to the blue sub-pixels includes a first minimum threshold voltage endpoint value, the correspondence relationship corresponding to the red sub-pixels includes a second minimum threshold voltage endpoint value, and the correspondence relationship corresponding to the green sub-pixels includes a third minimum threshold voltage endpoint value, the first minimum threshold voltage endpoint value is greater than the fourth minimum threshold voltage endpoint value; the fourth minimum threshold voltage endpoint value and the second minimum threshold voltage endpoint value are approximately equal; the fourth minimum threshold voltage endpoint value and the third minimum threshold voltage endpoint value are approximately equal.

[0009] In some embodiments, the correspondence corresponding to the white sub-pixel includes a fourth maximum compensation voltage value. Where the correspondence corresponding to the blue sub-pixel includes a first maximum compensation voltage value, the correspondence corresponding to the red sub-pixel includes a second maximum compensation voltage value, and the correspondence corresponding to the green sub-pixel includes a third maximum compensation voltage value, the first maximum compensation voltage value is less than the fourth maximum compensation voltage value; the fourth maximum compensation voltage value and the second maximum compensation voltage value are approximately equal; and the fourth maximum compensation voltage value and the third maximum compensation voltage value are approximately equal.

[0010] In some embodiments, the correspondence table further includes a correspondence between the aging degree of different color sub-pixels and the compensation voltage. After determining the color displayed by the sub-pixel, the image display method further includes: determining the aging degree of the sub-pixel; and obtaining the corresponding compensation voltage according to the correspondence and the aging degree. Determining the data voltage required by the sub-pixel based on the threshold voltage and the compensation voltage includes: determining the data voltage required by the sub-pixel based on the threshold voltage, the compensation voltage corresponding to the threshold voltage, and the compensation voltage corresponding to the aging degree.

[0011] In some embodiments, the aging degree of the sub-pixel is negatively correlated with the compensation voltage.

[0012] In some embodiments, the sub-pixel includes a light-emitting device. Determining the aging degree of the sub-pixel includes: determining a target luminance of the light-emitting device; obtaining the actual luminance of the light-emitting device; and determining the aging degree of the light-emitting device based on the target luminance and the actual luminance.

[0013] In some embodiments, obtaining the threshold voltage of the sub-pixel includes: obtaining the threshold voltage of the sub-pixel when the display device performs a power-off operation. Determining the data voltage required for the sub-pixel includes: after the display device performs a power-off operation and then a power-on operation, when the display device is to display a black screen, determining the data voltage based on the threshold voltage and the compensation voltage.

[0014] In some embodiments, the sub-pixel includes a switching transistor, a driving transistor, and a sensing transistor. Obtaining the threshold voltage of the sub-pixel includes obtaining the threshold voltage of the driving transistor through the sensing transistor.

[0015] On the other hand, an image display structure is provided. The image display structure includes a memory, a receiver, and a processor. The memory stores a correspondence table. The correspondence table includes at least one adjustment interval, which includes a first threshold voltage endpoint value and a second threshold voltage endpoint value, wherein the first threshold voltage endpoint value is less than the second threshold voltage endpoint value; within the adjustment interval, the compensation voltage is a constant value. The receiver is electrically connected to a plurality of sub-pixels in the display device and is configured to acquire the threshold voltage of each sub-pixel. The processor is electrically connected to the memory and the receiver and is configured to determine the adjustment interval where the threshold voltage is located according to the correspondence table, acquire the compensation voltage corresponding to the threshold voltage according to the correspondence table and the adjustment interval, and then, when the display device needs to display a black screen, determine the data voltage required by the sub-pixel according to the threshold voltage and the compensation voltage.

[0016] In some embodiments, the plurality of sub-pixels includes red sub-pixels, green sub-pixels, and blue sub-pixels; the correspondence table includes the correspondence between threshold voltages and compensation voltages of different color sub-pixels. The processor is further configured to: determine the color displayed by the sub-pixel; determine the correspondence corresponding to the color displayed by the sub-pixel; and determine the adjustment range in which the threshold voltage falls within the correspondence based on the threshold voltage.

[0017] In some embodiments, the correspondence table further includes a correspondence between the aging degree of different color sub-pixels and the compensation voltage. The processor is further configured to, after determining the color displayed by the sub-pixel, determine the aging degree of the sub-pixel; and obtain the corresponding compensation voltage based on the correspondence and the aging degree. The processor is further configured to determine the data voltage required by the sub-pixel based on the threshold voltage, the compensation voltage corresponding to the threshold voltage, and the threshold voltage corresponding to the aging degree.

[0018] In another aspect, a display device is provided. The display device includes: a display substrate, an image display structure as described in any of the above embodiments, a timing controller electrically connected to a processor in the image display structure, and a source driver electrically connected to the timing controller. The display substrate includes a plurality of sub-pixels. The timing controller is configured to receive a data voltage determined by the processor and generate a source control signal based on the data voltage. The source driver is configured to generate a signal corresponding to the data voltage based on the source control signal.

[0019] In some embodiments, the display device further includes a motherboard electrically connected to the display substrate. The image display structure is disposed in the motherboard.

[0020] In another aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer program instructions that, when executed, cause the computer to perform the image display method as described in any of the above embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual process of the method, etc. involved in the embodiments of this disclosure.

[0022] Figure 1 This is a flowchart of an image display method according to some embodiments of the present disclosure;

[0023] Figure 2 for Figure 1 The flowchart shown is one type of S300;

[0024] Figure 3 This is a flowchart of another image display method according to some embodiments of the present disclosure;

[0025] Figure 4 for Figure 3 One flowchart of S320a is shown in the flowchart below;

[0026] Figure 5 This is a correspondence table according to some embodiments of the present disclosure;

[0027] Figure 6 This is a diagram showing the relationship between the same column of sub-pixels and data voltages according to some embodiments of this disclosure;

[0028] Figure 7 This is a graph showing the relationship between data voltage and time required for the same sub-pixel according to some embodiments of this disclosure;

[0029] Figure 8 This is another correspondence table according to some embodiments of this disclosure;

[0030] Figure 9 This is a graph showing the relationship between compensation voltage and time for the same sub-pixel according to some embodiments of this disclosure;

[0031] Figure 10 This is a structural diagram of an image display structure according to some embodiments of the present disclosure;

[0032] Figure 11 This is a structural diagram of a display device according to some embodiments of the present disclosure;

[0033] Figure 12 This is a structural diagram of another display device according to some embodiments of the present disclosure;

[0034] Figure 13 This is a structural diagram of a sub-pixel according to some embodiments of the present disclosure. Detailed Implementation

[0035] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0036] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0037] Hereinafter, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0038] In describing some embodiments, the term "connection" and its derivative expressions may be used. For example, the term "connection" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0039] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0040] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when”, “in the event of”, “in response to determination”, or “in response to detection”. Similarly, depending on the context, the phrase “if it is determined that…” or “if [the stated condition or event] is detected” may optionally be interpreted as meaning “in the event of determination that…”, “in response to determination that…”, “when [the stated condition or event] is detected”, or “in response to the detection of [the stated condition or event]”.

[0041] The use of “applies to” or “configured to” in this article implies an open and inclusive language that does not preclude applicability to or configuration to devices that perform additional tasks or steps.

[0042] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0043] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0044] This document describes exemplary embodiments with reference to cross-sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Thus, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. For example, etched regions shown as rectangular would typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0045] The transistors used in the circuits provided in the embodiments of this disclosure can be thin-film transistors, field-effect transistors (e.g., oxide thin-film transistors) or other switching devices with the same characteristics. The embodiments of this disclosure are all described using thin-film transistors as an example.

[0046] In the circuits provided in the embodiments of this disclosure, the control terminal of each transistor is the gate of the transistor, the first terminal is one of the source and drain of the transistor, and the second terminal is the other of the source and drain of the transistor. Since the source and drain of a transistor can be structurally symmetrical, they can be structurally indistinguishable. That is, the first and second terminals of the transistors in the embodiments of this disclosure can be structurally indistinguishable. For example, in the case of a P-type transistor, the first terminal is the source and the second terminal is the drain; for example, in the case of an N-type transistor, the first terminal is the drain and the second terminal is the source.

[0047] In the circuits provided in the embodiments of this disclosure, nodes do not represent actual components, but rather represent junctions of related electrical connections in the circuit diagram. In other words, these nodes are equivalent to junctions of related electrical connections in the circuit diagram.

[0048] In the circuits provided in the embodiments of this disclosure, all transistors are N-type transistors, which will be used as an example for explanation.

[0049] like Figure 11 and Figure 12 As shown, some embodiments of this disclosure provide a display device 1000.

[0050] For example, the display device 1000 described above can be any product or component with display function, such as a monitor, television, digital camera, mobile phone, or tablet computer.

[0051] In some embodiments, such as Figure 11 and Figure 12 As shown, the above-mentioned display device 1000 includes: a display substrate 100.

[0052] In some examples, such as Figure 11 and Figure 12 As shown, the display substrate 100 includes a plurality of sub-pixels 1. These plurality of sub-pixels 1 may, for example, be arranged in an array.

[0053] In some examples, such as Figure 13 As shown, each sub-pixel 1 may include a pixel driving circuit 11 and a light-emitting device 12 electrically connected to the pixel driving circuit 11. The pixel driving circuit 11 can provide a driving signal to the light-emitting device 12 to control the light-emitting state of the light-emitting device 12.

[0054] For example, the driving signal provided by the pixel driving circuit 11 can control whether the light-emitting device 12 emits light, or can control the brightness of the light-emitting device 12.

[0055] For example, the light-emitting device 12 described above can be a current-mode light-emitting diode. For instance, the current-mode light-emitting diode can be a micro light-emitting diode (Micro LED), a mini light-emitting diode (Mini LED), an organic light-emitting diode (OLED), or a quantum dot light-emitting diode (QLED).

[0056] The pixel driving circuit 11 described above has various structures, which can be selected and configured according to actual needs. For example, the structure of the pixel driving circuit 11 may include "3T1C", "6T1C", "7T1C", "6T2C" or "7T2C" and so on. Here, "T" represents a transistor, and the number before "T" indicates the number of transistors, and "C" represents a storage capacitor, and the number before "C" indicates the number of storage capacitors.

[0057] Here, during the operation of the display device 1000, the stability of the transistors and light-emitting devices 12 in the pixel driving circuit 11 may decrease (e.g., the threshold voltage of the driving transistors drifts or the light-emitting devices 12 ages), which will affect the display effect of the display device 1000. Therefore, it is necessary to compensate for the sub-pixel 1.

[0058] There are various ways to compensate sub-pixel 1, and the appropriate method can be selected based on actual needs. For example, a pixel compensation circuit can be set in sub-pixel 1 to perform internal compensation. Alternatively, the driving transistor or light-emitting device 12 can be sensed by the transistor inside sub-pixel 1, and the sensed data can be transmitted to an external sensing circuit. This external sensing circuit can then calculate the driving voltage value that needs compensation and provide feedback, thereby achieving external compensation for sub-pixel 1.

[0059] The following is a schematic description of the structure and operation of sub-pixel 1, using an external compensation method (sensing the driving transistor) and a “3T1C” structure for the pixel driving circuit 11 as an example.

[0060] For example, such as Figure 13 As shown, the pixel driving circuit 11 may include: a switching transistor T1, a driving transistor T2, a sensing transistor T3, and a storage capacitor Cst.

[0061] For example, such as Figure 13As shown, the control terminal of the switching transistor T1 is electrically connected to the first gate signal terminal G1, the first terminal of the switching transistor T1 is electrically connected to the data signal terminal Data, and the second terminal of the switching transistor T1 is electrically connected to the first node G. The switching transistor T1 is configured to transmit the data signal received at the data signal terminal Data to the first node G in response to a first gate signal received at the first gate signal terminal G1.

[0062] Here, the data signals include, for example, detection data signals and display data signals. The detection data signals are used during the blanking period, and the display data signals are used during the display period. The display period and blanking period can be referred to in the descriptions of some of the following embodiments, and will not be repeated here.

[0063] For example, such as Figure 13 As shown, the control terminal of the driving transistor T2 is electrically connected to the first node G, the first terminal of the driving transistor T2 is electrically connected to the first voltage signal terminal ELVDD, and the second terminal of the driving transistor T2 is electrically connected to the second node S. The driving transistor T2 is configured to conduct under the control of the voltage at the first node G, generate a driving signal based on the voltage at the first node G and the first voltage signal received at the first voltage signal terminal ELVDD, and transmit this driving signal to the second node S.

[0064] For example, such as Figure 13 As shown, the first terminal of the storage capacitor Cst is electrically connected to the first node G, and the second terminal of the storage capacitor Cst is electrically connected to the second node S. The switching transistor T1 charges the storage capacitor Cst simultaneously while charging the first node G.

[0065] For example, such as Figure 13 As shown, the anode of the light-emitting device 12 is electrically connected to the second node S, and the cathode of the light-emitting device 12 is electrically connected to the second voltage signal terminal ELVSS. The light-emitting device 12 is configured to emit light under the drive of a driving signal.

[0066] For example, such as Figure 13 As shown, the control terminal of sensing transistor T3 is electrically connected to the second gate signal terminal G2, the first terminal of sensing transistor T3 is electrically connected to the second node S, and the second terminal of sensing transistor T3 is electrically connected to the sensing signal terminal Sense. Sensing transistor T3 is configured to detect the electrical characteristics of driving transistor T2 in response to a second gate signal received at the second gate signal terminal G2 to achieve external compensation. These electrical characteristics include, for example, the threshold voltage and / or carrier mobility of driving transistor T2.

[0067] Here, the sensing signal terminal Sense can provide a reset signal or acquire a sensing signal. The reset signal is used to reset the second node S during the display period, and the acquire sensing signal is used to acquire the threshold voltage and / or carrier mobility of the driving transistor T2 during the blanking period.

[0068] In this example, the display phase of a frame may include, for example, a display period and a blanking period performed sequentially.

[0069] During the display period of a frame display phase, the working process of sub-pixel 1 may include, for example, a reset phase, a data writing phase, and a light emission phase.

[0070] During the reset phase, the first gate signal provided by the first gate signal terminal G1 is at a high level, and the data signal provided by the data signal terminal Data is at a low level. The second gate signal provided by the second gate signal terminal G2 is at a high level, and the reset signal provided by the sensing signal terminal Sense is at a low level. Switching transistor T1 is turned on under the control of the first gate signal, receives the data signal, and transmits the data signal to the first node G to reset the first node G. Sensing transistor T3 is turned on under the control of the second gate signal, receives the reset signal, and transmits the reset signal to the second node S to reset the second node S.

[0071] During the data writing phase, the level of the first gate signal provided by the first gate signal terminal G1 is high, and the level of the data signal (e.g., a display data signal) provided by the data signal terminal Data is also high. The switching transistor T1 is turned on under the control of the first gate signal, receives the data signal, transmits the data signal to the first node G, and simultaneously charges the storage capacitor Cst.

[0072] During the light-emitting phase, the level of the first gate signal provided by the first gate signal terminal G1 is low, the level of the second gate signal provided by the second gate signal terminal G2 is low, and the level of the first voltage signal provided by the first voltage signal terminal ELVDD is high. Switching transistor T1 is turned off under the control of the first gate signal, and sensing transistor T3 is turned off under the control of the second gate signal. Storage capacitor Cst begins to discharge, keeping the voltage at the first node G high. Driving transistor T2 is turned on under the control of the voltage at the first node G, receives the first voltage signal, and generates a driving signal (e.g., a current signal), transmitting this driving signal to the second node S to drive the light-emitting device 12 to emit light.

[0073] For example, the formula for calculating the driving signal (e.g., a current signal) is as follows:

[0074] I = K × (Vgs - Vth)². Where K is a fixed parameter, Vgs is the voltage difference between the first node G and the second node S, and Vth is the threshold voltage of the driving transistor T2.

[0075] During the blanking period in a frame display phase, the working process of subpixel 1 may include, for example, a first stage and a second stage.

[0076] In the first stage, the levels of the first gate signal provided by the first gate signal terminal G1 and the second gate signal provided by the second gate signal terminal G2 are both high, and the level of the data signal (e.g., a detection data signal) provided by the data signal terminal Data is also high. The switching transistor T1 is turned on under the control of the first gate signal, receives the data signal, and transmits the data signal to the first node G to charge the first node G. The sensing transistor T3 is turned on under the control of the second gate signal, receives a reset signal from the sensing signal terminal Sense, and transmits the reset signal to the second node S.

[0077] In the second stage, the sensing signal terminal Sense is in a floating state. The driving transistor T2 is turned on under the control of the voltage of the first node G, receives the first voltage signal provided by the first voltage signal terminal ELVDD, and transmits the first voltage signal to the second node S to charge the second node S, causing the voltage of the second node S to rise until the driving transistor T2 is turned off.

[0078] Since sensing transistor T3 is in the ON state and sensing signal terminal Sense is in the Floating state, while driving transistor T2 is charging the second node S, it is also charging sensing signal terminal Sense. By sampling the voltage of sensing signal terminal Sense (i.e., acquiring the sensing signal), the threshold voltage Vth of driving transistor T2 (which is equal to the voltage difference Vgs between the first node G and the second node S) and / or carrier mobility can be calculated based on the relationship between the voltage of sensing signal terminal Sense and the level of the data signal.

[0079] Here, for example, during the display process of the display device 1000, the carrier mobility calculated after the blanking period of each frame display stage is, for example, the carrier mobility of the driving transistor T2; during the power-off process of the display device 1000, the threshold voltage Vth of the driving transistor T2 is calculated for example.

[0080] The high and low levels in this disclosure are relative values ​​and do not therefore limit the high level to a level greater than or equal to 0V, nor do they therefore limit the low level to a level less than or equal to 0V.

[0081] It should be noted that during the display process of the display device 1000, a black screen will be displayed during a certain frame display phase. That is, during the display period of this frame display phase, the light-emitting device 12 does not emit light, and the display brightness is 0. At this time, in order to ensure that the light-emitting device 12 remains in a non-light-emitting state during the light-emitting phase, it is necessary to ensure that the voltage difference (i.e., Vgs) between the data signal written to the first node G via the switching transistor T1 during the data writing phase and the reset signal written to the second node S via the sensing transistor T3 during the reset phase is less than the threshold voltage Vth of the driving transistor T2. This ensures that the driving transistor T2 remains in a turned-off state during the light-emitting phase, thereby making the value of the driving signal 0.

[0082] Understandably, the initial value of the threshold voltage Vth of the driving transistor is generally between -1V and 0V. The driving transistor is susceptible to temperature and / or light, causing its threshold voltage to drift negatively. During the black screen display process, to ensure the driving signal I = 0, i.e., to ensure the driving transistor is not turned on, Vgs needs to be reduced. The magnitude of Vgs is related to the voltage value of the data signal written to the first node via the switching transistor during the data writing phase (hereinafter referred to as data voltage) Vg, and the voltage value of the reset signal written to the second node via the sensing transistor during the reset phase, Vs.

[0083] In related technologies, the data voltage is generally set directly to 0V. During the reset phase, the voltage value Vs of the reset signal written to the second node via the sensing transistor is set to 1V. At this time, Vgs = -1V, and Vgs < Vth, which can satisfy the display of a black screen. However, the driving transistor is affected by the Negative Gate Temperature Stress (NBTS), causing its threshold voltage to continuously drift negatively. Therefore, in order to avoid the driving transistor's threshold voltage drifting negatively and making it difficult to meet the condition of Vgs < Vth, before the display device leaves the factory, the voltage value Vs of the reset signal written to the second node via the sensing transistor during the reset phase is set to a higher value (for example, the voltage value Vs of the reset signal is set to 2.5V) to ensure that Vgs (i.e., -2.5V) < Vth during the light-emitting phase, that is, to ensure that the driving transistor will not be turned on. However, the higher the voltage of the second node is set, the more severe the Negative Gate Temperature Stress (NBTS) generated by the driving transistor becomes, which in turn causes the threshold voltage of the driving transistor to drift negatively more rapidly under the influence of NBTS.

[0084] Based on this, some embodiments of this disclosure provide an image display method. This image display method is applied to the display device 1000 described above. Regarding the display device 1000, please refer to the description of the relevant embodiments herein, which will not be repeated here.

[0085] In some examples, such as Figure 1 As shown, the above image display method includes: S100 to S500.

[0086] S100, such as Figure 5 As shown, a correspondence table is established between the threshold voltage Vth and the compensation voltage ΔV of sub-pixel 1. The correspondence table includes at least one adjustment interval A, which includes a first threshold voltage endpoint value Vth1 and a second threshold voltage endpoint value Vth2, where the first threshold voltage endpoint value Vth1 is less than the second threshold voltage endpoint value Vth2; within this adjustment interval A, the compensation voltage ΔV is a constant value.

[0087] For example, the aforementioned correspondence table can be established and stored in the display device 1000 before it leaves the factory. Therefore, sub-pixel 1 in the aforementioned correspondence table refers to sub-pixel 1 in general, and is different from the specific sub-pixel 1 mentioned below. The threshold voltage Vth of sub-pixel 1 mentioned above, for example, refers to the threshold voltage Vth of the driving transistor T2 in sub-pixel 1.

[0088] For example, the number of adjustment intervals A included in the above correspondence table can be one or more.

[0089] Optionally, if the above correspondence table includes an adjustment range A, the second threshold voltage endpoint value Vth2 is, for example, the initial threshold voltage value of the driving transistor T2.

[0090] Optionally, if the above correspondence table includes multiple adjustment intervals A, the largest second threshold voltage endpoint value Vth2 among the multiple second threshold voltage endpoint values ​​Vth2 is, for example, the initial threshold voltage value of the driving transistor T2.

[0091] For example, the initial threshold voltage of the driving transistor T2 can be any value from -1V to 0V (including the endpoint value).

[0092] The image display method described below will be illustrated using the example of an initial threshold voltage of 0V for the driving transistor T2.

[0093] It should be noted that each adjustment range A includes a smaller first threshold voltage endpoint value Vth1 and a larger second threshold voltage endpoint value Vth2, and the compensation voltage ΔV is a constant within this adjustment range A.

[0094] Since each adjustment range A corresponds to a compensation voltage ΔV, for a certain adjustment range A, its first threshold voltage endpoint value Vth1 and / or second threshold voltage endpoint value Vth2 can be actual values ​​or virtual values.

[0095] For example, such as Figure 5 As shown, in two adjacent adjustment intervals A, the first threshold voltage endpoint value Vth1 of the first adjustment interval A1 is -1V, and the second threshold voltage endpoint value Vth2 of the second adjustment interval A2 is also -1V. This -1V can belong to the first adjustment interval A1; in this case, the first threshold voltage endpoint value Vth1 of the first adjustment interval A1 is the actual value, and the second threshold voltage endpoint value Vth2 of the second adjustment interval A2 is a virtual value. Alternatively, this -1V can belong to the second adjustment interval A2; in this case, the first threshold voltage endpoint value Vth1 of the first adjustment interval A1 is a virtual value, and the second threshold voltage endpoint value Vth2 of the second adjustment interval A2 is the actual value. Figure 5 In the diagram, a solid circle represents the actual value of the corresponding threshold voltage endpoint, while a hollow circle represents the virtual value of the corresponding threshold voltage endpoint.

[0096] S200, obtain the threshold voltage Vth of each sub-pixel 1.

[0097] It is understandable that, in the case of external compensation, the pixel driving circuit 11 included in sub-pixel 1 may have different structures, including at least a switching transistor T1, a sensing transistor T3, and a driving transistor T2. Of course, the pixel driving circuit 11 may also include a light-emitting control transistor, etc.

[0098] For example, in the above S200, obtaining the threshold voltage Vth of each sub-pixel 1 includes: obtaining the threshold voltage Vth of the driving transistor T2 through the sensing transistor T3 in each sub-pixel 1.

[0099] For example, taking the structure of the pixel driving circuit 11 as a 3T1C structure, the specific process of obtaining the threshold voltage Vth of sub-pixel 1 can be referred to the above description of the blanking stage in a frame display stage, and will not be repeated here.

[0100] Optionally, the obtained threshold voltage Vth can be, for example, 0V.

[0101] S300, based on the corresponding relationship table, determine the adjustment range A where the threshold voltage Vth is located.

[0102] For example, after obtaining the threshold voltage Vth of sub-pixel 1, the threshold voltage Vth can be compared with the first threshold voltage endpoint value Vth1 and / or the second threshold voltage endpoint value Vth2 of each adjustment interval A in the corresponding relationship table, and then the adjustment interval A in which the threshold voltage Vth is located can be determined according to the comparison result.

[0103] Optionally, when the correspondence table includes multiple adjustment intervals, the comparison between the above threshold voltage Vth and the threshold voltage endpoint value of each adjustment interval A can start from the first adjustment interval A (i.e., the adjustment interval A with the maximum second threshold voltage endpoint value Vth2) among the multiple adjustment intervals A.

[0104] For example, compare whether the acquired threshold voltage Vth is greater than the second threshold voltage endpoint value Vth2 of the first adjustment interval A.

[0105] If so, then the threshold voltage does not belong to the adjustment range A. Then, the obtained threshold voltage Vth is compared with the second threshold voltage endpoint value Vth2 of the next adjacent adjustment range A, and the above comparison is performed again.

[0106] If not, compare whether the acquired threshold voltage Vth is greater than the first threshold voltage endpoint value Vth1 of the first adjustment interval A. If yes, determine that the threshold voltage Vth1 belongs to the first adjustment interval A; if not, repeat the above comparison between the acquired threshold voltage Vth and the adjacent adjustment interval A until the adjustment interval A in which the acquired threshold voltage Vth belongs is determined.

[0107] For example, the acquired threshold voltage Vth is 0V. Comparing 0V with the second threshold voltage endpoint value Vth2 (also 0V) of the first adjustment range A (-1V to 0V), it can be seen that the acquired threshold voltage Vth is not greater than this second threshold voltage endpoint value Vth2. Then, comparing the acquired threshold voltage Vth with the first threshold voltage endpoint value Vth1 (-1V) of the first adjustment range A, it can be seen that the acquired threshold voltage Vth is greater than this first threshold voltage endpoint value Vth1. Therefore, the adjustment range A corresponding to the acquired threshold voltage Vth (i.e., 0V) in the correspondence table is determined to be the first adjustment range A.

[0108] S400, according to the corresponding relationship table and the above adjustment range A, obtain the compensation voltage ΔV corresponding to the above threshold voltage Vth.

[0109] It is understandable that each adjustment range A corresponds to a compensation voltage ΔV. After determining the adjustment range A corresponding to the aforementioned threshold voltage Vth, the corresponding compensation voltage ΔV can be obtained.

[0110] For example, the adjustment range A corresponding to the threshold voltage Vth (i.e., 0V) is the first adjustment range A (i.e., -1V to 0V), where the compensation voltage ΔV corresponding to the first adjustment range A is 0.2V. Therefore, it can be determined that the compensation voltage ΔV corresponding to the threshold voltage Vth is 0.2V.

[0111] S500, when the display device 1000 is to display a black screen, the data voltage Vg required by sub-pixel 1 is determined based on the threshold voltage Vth and the compensation voltage ΔV.

[0112] It should be noted that the data voltage Vg required by the aforementioned sub-pixel 1 is the voltage value of the data signal written to the first node G via the switching transistor T1 during the data writing phase of a display frame.

[0113] For example, the data voltage Vg required by sub-pixel 1 satisfies the following relationship: Vg=Vs+Vth-ΔV.

[0114] For example, when the display device 1000 displays a black screen, each sub-pixel 1 does not emit light, ensuring that the driving signal I = 0. That is, in the pixel driving circuit 11 of each sub-pixel 1, the voltage value Vs of the reset signal written to the second node S during the reset phase, the data voltage Vg written to the first node G during the data writing phase, and the threshold voltage Vth of the driving transistor T2 need to satisfy the following relationship: Vg - Vs - Vth < 0. At this time, the driving transistor T2 can be in the off state, and the light-emitting device 12 does not emit light.

[0115] For example, during the reset phase, the voltage value Vs of the reset signal written to the second node S is 2.5V, and the obtained threshold voltage Vth is 0V. The compensation voltage ΔV corresponding to this threshold voltage Vth is 0.2V. According to the above relationship Vg=Vs+Vth-ΔV, the data voltage Vg written to the first node G during the data writing phase is 2.3V. At this time, the voltage difference Vgs between the first node G and the second node S is 2.3V-2.5V=-0.2V. However, Vgs in related technologies is -2.5V.

[0116] As can be seen from the above, the pressure difference Vgs between the first node G and the second node S is not only less than 0, but also has a small value (i.e., a small absolute value), which is much smaller than the value of Vgs (i.e., the absolute value) in related technologies. This not only ensures that sub-pixel 1 does not emit light during the display device 1000's black screen display process, preventing the black screen from shining, but also greatly reduces the pressure difference Vgs between the first node G and the second node S, reducing NBTS, and thus significantly slowing down the negative drift rate caused by NBTS.

[0117] The image display method provided in some embodiments of this disclosure establishes a correspondence table between the threshold voltage Vth and the compensation voltage ΔV of sub-pixel 1. After obtaining the threshold voltage Vth of each sub-pixel 1, the adjustment range A in which the threshold voltage Vth is located is obtained. Then, according to the above correspondence table and the adjustment range A, the corresponding compensation voltage ΔV is obtained. Subsequently, when the display device 1000 needs to display a black screen, the data voltage Vg required by sub-pixel 1 can be determined according to the above threshold voltage Vth and compensation voltage ΔV. This disclosure adjusts the method of obtaining the data voltage Vg, which can adjust the magnitude of the data voltage Vg required by sub-pixel 1, making the magnitude of the data voltage Vg closer to the voltage Vs of the second node S. This not only satisfies the condition Vg-Vs-Vth<0, but also reduces the voltage difference between the data voltage Vg and the voltage Vs of the second node S. This not only ensures that sub-pixel 1 does not emit light during the display of a black screen in the display device 1000, preventing the black screen from shining, but also greatly reduces the impact of NBTS caused by the high voltage Vs of the second node S. To a certain extent, it slows down the negative drift rate of the driving transistor T2 in sub-pixel 1, increases the stability of the driving transistor T2 of sub-pixel 1, and improves the display quality of the display device 1000.

[0118] It is understandable that in the display device 1000, the threshold voltage Vth of the driving transistor T2 of different sub-pixels 1 can be different. Since the data voltage Vg required by sub-pixels 1 to display a black screen satisfies the following relationship: Vg=Vs+Vth-ΔV, for the above-mentioned column of sub-pixels 1, the data voltage Vg required by each sub-pixel 1 is different.

[0119] For example, Figure 6 This is a schematic diagram showing the data voltage Vg required for a certain column of sub-pixels 1 in the display device 1000. Since the threshold voltage Vth of the driving transistor T2 for different sub-pixels 1 can be different, the data voltage Vg required for each sub-pixel 1 in the aforementioned column of sub-pixels 1 is different. Specifically, excluding the influence of the compensation voltage ΔV on the data voltage Vg, the data voltage Vg required for each sub-pixel 1 can, for example, change with its threshold voltage Vth.

[0120] This allows for the reduction of the voltage difference between the reduced data voltage Vg in different sub-pixels 1 and the voltage Vs of the second node S when the display device 1000 needs to display a black screen. This slows down the negative drift rate of the driving transistor T2 in different sub-pixels 1, avoiding a situation where the voltage difference between the data voltage Vg in some sub-pixels 1 and the voltage Vs of the second node S is large due to the same data voltage Vg being provided, which in turn leads to a large negative drift rate of the driving transistor T2 in some sub-pixels 1.

[0121] Furthermore, for the same sub-pixel 1, such as Figure 7 As time increases, the threshold voltage Vth gradually becomes negative, and correspondingly, the data voltage Vg required by sub-pixel 1 will also gradually decrease.

[0122] It is understandable that in the correspondence table between the threshold voltage Vth and the compensation voltage ΔV of sub-pixel 1, the number of adjustment intervals A can be one or more.

[0123] In some examples, the above correspondence table includes an adjustment interval A. In this case, as the threshold voltage Vth of the driving transistor T2 in sub-pixel 1 gradually drifts negatively, that is, as the threshold voltage Vth gradually decreases, the compensation voltage ΔV can remain unchanged.

[0124] In other examples, the above correspondence table includes multiple adjustment intervals A. In this case, as the threshold voltage Vth of the driving transistor T2 in sub-pixel 1 gradually drifts negatively, the compensation voltage ΔV can change accordingly. The trend of the compensation voltage ΔV can be selected and set according to actual needs.

[0125] Optional, such as Figure 5 As shown, when there are multiple adjustment intervals A included in the above correspondence table, two adjacent adjustment intervals A are respectively the first adjustment interval A1 and the second adjustment interval A2. The average value of the threshold voltage Vth corresponding to the first adjustment interval A1 is less than the average value of the threshold voltage Vth corresponding to the second adjustment interval A2; the compensation voltage ΔV corresponding to the first adjustment interval A1 is less than the compensation voltage ΔV corresponding to the second adjustment interval A2.

[0126] In other words, as the threshold voltage Vth decreases, the compensation voltage ΔV decreases in a stepwise manner. Since the threshold voltage Vth of the driving transistor T2 gradually drifts negatively over time, it can also be assumed that the compensation voltage ΔV decreases in a stepwise manner over time.

[0127] For example, within a certain adjustment range A in the above correspondence table, the second threshold voltage endpoint value Vth2 can be 0V, and the first threshold voltage endpoint value Vth1 can be -1V. Correspondingly, within this adjustment range A, the compensation voltage ΔV can be 0.2V.

[0128] For example, within a certain adjustment range A in the above correspondence table, the second threshold voltage endpoint value Vth2 can be -1V, and the first threshold voltage endpoint value Vth1 can be -1.5V. Correspondingly, within this adjustment range A, the compensation voltage ΔV can be 0.1V.

[0129] When the display device 1000 needs to display a black screen, the data voltage Vg required by sub-pixel 1 satisfies the following relationship: Vg = Vs + Vth - ΔV. By setting the trend of the compensation voltage ΔV to the above trend, the requirements for displaying a black screen can be met, and it can be ensured that the data voltage Vg will not be too small as the threshold voltage Vth decreases. This makes the magnitude of the data voltage Vg closer to the voltage Vs of the second node S, greatly reducing the impact of NBTS caused by the high voltage Vs of the second node S, and slowing down the negative drift rate of the driving transistor T2 in sub-pixel 1.

[0130] Because the refresh rate of sub-pixel 1 is relatively high, the blanking period in each frame display stage is short during the display process of the display device 1000. Therefore, the carrier mobility of the driving transistor T2 can be calculated during the blanking period; and the threshold voltage Vth of the driving transistor T2 can be calculated during the power-off process of the display device 1000.

[0131] Based on this, in some embodiments, in the above S200, obtaining the threshold voltage Vth of sub-pixel 1 includes: obtaining the threshold voltage Vth of sub-pixel 1 when the display device 1000 performs a power-off operation.

[0132] During the power-off process of the display device 1000, sufficient charging time can be provided for the pixel driving circuit 11 of sub-pixel 1, so that the threshold voltage Vth of the driving transistor T2 can be calculated.

[0133] In some examples, in the above S500, determining the data voltage Vg required for sub-pixel 1 includes: after the display device 1000 performs a power-off operation and a power-on operation, when the display device 1000 is to display a black screen, determining the data voltage Vg based on the above threshold voltage Vth and the above compensation voltage ΔV.

[0134] In other words, before the display device 1000 performs a power-off operation, the threshold voltage Vth of sub-pixel 1 is basically not acquired. The threshold voltage Vth used in the threshold voltage compensation process for sub-pixel 1 is calculated before the display device 1000 performs this power-on operation. During the next power-on operation and display process of the display device 1000, the threshold voltage Vth used in the threshold voltage compensation process for sub-pixel 1 is basically not updated, but remains unchanged. Therefore, during this stage, when the display device 1000 wants to display a black screen, the data voltage Vg can remain unchanged.

[0135] By setting a compensation voltage ΔV, a certain difference can be made between Vgs and the threshold voltage Vth, reserving a certain margin for the negative drift of the threshold voltage Vth of sub-pixel 1. This avoids the situation where Vgs is greater than the negatively drifted threshold voltage Vth due to the large negative drift of the threshold voltage Vth of pixel 1 during the power-on and display process of the display device 1000. This ensures that the display device 1000 can display a black screen after each power-on and before each power-off operation, and makes Vgs have a small absolute value, reducing the impact of NBTS and slowing down the negative drift rate of the driving transistor T2 in sub-pixel 1.

[0136] In some embodiments, the plurality of sub-pixels 1 included in the display device 1000 may include sub-pixels of various colors.

[0137] Based on this, such as Figure 8 As shown, the above correspondence table can include the correspondence between the threshold voltage Vth and the compensation voltage ΔV of different color sub-pixels.

[0138] In some examples, the aforementioned multiple sub-pixels 1 may include red sub-pixels, green sub-pixels, and blue sub-pixels.

[0139] For example, the aforementioned correspondence table may include the correspondence between the threshold voltage Vth and the compensation voltage ΔV of the red sub-pixel, the correspondence between the threshold voltage Vth and the compensation voltage ΔV of the green sub-pixel, and the correspondence between the threshold voltage Vth and the compensation voltage ΔV of the blue sub-pixel. The correspondence between the threshold voltage Vth and the compensation voltage ΔV of different color sub-pixels 10 may, for example, be the same, or may, for example, be different.

[0140] In some examples, such as Figure 2 As shown, in the above S300, the adjustment range A where the threshold voltage Vth is located is determined, including: S310~S330.

[0141] S310, determine the color displayed by sub-pixel 1.

[0142] There are several ways to determine the color displayed by subpixel 1, and you can choose the setting according to your actual needs.

[0143] For example, the light emitted by each sub-pixel 1 can be detected by optical detection, and the color displayed by each sub-pixel 1 can be confirmed by comparing the color of the light.

[0144] For example, the color displayed by subpixel 1 can be determined based on the arrangement or position coordinates of subpixel 1.

[0145] For example, if subpixel 1 displays red, then subpixel 1 is a red subpixel. If subpixel 1 displays green, then subpixel 1 is a green subpixel. If subpixel 1 displays blue, then subpixel 1 is a blue subpixel.

[0146] S320, determine the correspondence between the colors displayed by sub-pixel 1.

[0147] For example, after determining the color displayed by sub-pixel 1, the correspondence between the threshold voltage Vth and the compensation voltage ΔV of the color displayed by sub-pixel 1 can be found according to the correspondence table.

[0148] For example, if we determine that the color displayed by sub-pixel 1 is red, we can then look up the correspondence between the threshold voltage Vth and the compensation voltage ΔV of the red sub-pixel using a correspondence table.

[0149] S330, based on the threshold voltage Vth, determine the adjustment range A in which the threshold voltage Vth falls within the above correspondence.

[0150] For example, it is determined that the color displayed by sub-pixel 1 is red. The threshold voltage Vth can be compared with the first threshold voltage endpoint value Vth1 and / or the second threshold voltage endpoint value Vth2 of each adjustment interval A in the correspondence between the threshold voltage Vth and the compensation voltage ΔV of the red sub-pixel. Then, based on the comparison result, the adjustment interval A in which the threshold voltage Vth is located is determined.

[0151] In this example, the process of determining the adjustment range A in which the threshold voltage Vth falls within the above correspondence can be referred to the explanation in S300 above, and will not be repeated here.

[0152] For example, after determining the adjustment range A in which the threshold voltage Vth of the red sub-pixel falls within the correspondence between the threshold voltage Vth of the red sub-pixel and the compensation voltage ΔV, the compensation voltage ΔV corresponding to the threshold voltage Vth of the red sub-pixel can be obtained based on the correspondence and the adjustment range A.

[0153] It should be noted that the negative drift rate of the driving transistor T2 is different for different color sub-pixels. Therefore, the threshold voltage Vth of the driving transistor T2 for different color sub-pixels acquired at the same time will be different.

[0154] By dividing the correspondence in the above correspondence table according to the color of the sub-pixels, the correspondence between the threshold voltage Vth and the compensation voltage ΔV of different colored sub-pixels is obtained. In determining the adjustment range A where the acquired threshold voltage is located, the adjustment range A can be determined based on the color displayed by sub-pixel 1. Furthermore, the corresponding compensation voltage ΔV and the required data voltage Vg for sub-pixel 1 can be determined from the correspondence corresponding to the color displayed by sub-pixel 1. This improves the accuracy and precision of the acquired compensation voltage ΔV and the determined data voltage Vg, and helps to reduce the difference in the negative drift rate of the threshold voltage Vth of the driving transistor T2 in different sub-pixels 1 while achieving the display of a black screen.

[0155] In some embodiments, such as Figure 8 As shown, the correspondence between blue sub-pixels includes the first minimum threshold voltage endpoint value Vthmin1, the correspondence between red sub-pixels includes the second minimum threshold voltage endpoint value Vthmin2, and the correspondence between green sub-pixels includes the third minimum threshold voltage endpoint value Vthmin3. The first minimum threshold voltage endpoint value Vthmin1 is greater than the second minimum threshold voltage endpoint value Vthmin2. The first minimum threshold voltage endpoint value Vthmin1 is greater than the third minimum threshold voltage endpoint value Vthmin3.

[0156] Understandably, during the display process of the display device 1000, different sub-pixels 1 emit light. A portion of this light is easily reflected by the traces in the display device 1000 (e.g., the traces included in the pixel driving circuit 11) and incident on the driving transistor T2. Research shows that the blue light emitted by the blue sub-pixel affects the driving transistor T2 of the pixel driving circuit 11 in the red and green sub-pixels, causing a negative drift in the threshold voltage of the driving transistor T2 in the red and green sub-pixels; while the red light emitted by the red sub-pixel and the green light emitted by the green sub-pixel have virtually no effect on the driving transistor T2 of the pixel driving circuit 11 in each sub-pixel 1, and basically do not cause a negative drift in the threshold voltage of the driving transistor T2 in each sub-pixel 1.

[0157] In other words, the negative drift rate of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel is lower than the negative drift rate of the threshold voltage Vth of the driving transistor T2 in other color sub-pixels. Within the same time period, the degree of negative drift of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel is lower than the degree of negative drift of the threshold voltage Vth of the driving transistor T2 in other color sub-pixels.

[0158] Therefore, in the correspondence between different color sub-pixels, the first minimum threshold voltage endpoint value Vthmin1 corresponding to the blue sub-pixel will not only be greater than the second minimum threshold voltage endpoint value Vthmin2 corresponding to the red sub-pixel, but also greater than the third minimum threshold voltage endpoint value Vthmin3 corresponding to the green sub-pixel.

[0159] This disclosure does not limit the magnitude relationship between the second minimum threshold voltage endpoint value Vthmin2 corresponding to the red sub-pixel and the third minimum threshold voltage endpoint value Vthmin3 corresponding to the green sub-pixel; the specific relationship can be determined according to the actual situation.

[0160] In some examples, such as Figure 8 As shown, the second minimum threshold voltage endpoint value Vthmin2 corresponding to the red sub-pixel and the third minimum threshold voltage endpoint value Vthmin3 corresponding to the green sub-pixel are approximately equal.

[0161] That is, the second minimum threshold voltage endpoint value Vthmin2 and the third minimum threshold voltage endpoint value Vthmin3 can be equal. Alternatively, due to unavoidable influences such as temperature, there can be a small difference between the second minimum threshold voltage endpoint value Vthmin2 and the third minimum threshold voltage endpoint value Vthmin3.

[0162] In some embodiments, such as Figure 8 As shown, the correspondence between blue sub-pixels includes the first maximum compensation voltage value ΔVmax1, the correspondence between red sub-pixels includes the second maximum compensation voltage value ΔVmax2, and the correspondence between green sub-pixels includes the third maximum compensation voltage value ΔVmax3. The first maximum compensation voltage value ΔVmax1 is less than the second maximum compensation voltage value ΔVmax2. The first maximum compensation voltage value ΔVmax1 is less than the third maximum compensation voltage value ΔVmax3.

[0163] Because the negative drift rate of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel is lower than that in other color sub-pixels, by setting the maximum compensation voltage value in each correspondence so that the first maximum compensation voltage value ΔVmax1 corresponding to the blue sub-pixel is smaller than the maximum compensation voltage value corresponding to other color sub-pixels, the accuracy and precision of the compensation voltages corresponding to the blue sub-pixel and other color sub-pixels can be improved, as can the accuracy and precision of the data voltage Vg required by the determined blue sub-pixel and other color sub-pixels. Reducing the absolute value of Vgs is beneficial for achieving black screen display while minimizing the difference in the negative drift rate of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel and other color sub-pixels.

[0164] This disclosure does not limit the magnitude relationship between the second maximum compensation voltage value ΔVmax2 corresponding to the red sub-pixel and the third maximum compensation voltage value ΔVmax3 corresponding to the green sub-pixel; the specific relationship can be determined according to the actual situation.

[0165] In some examples, such as Figure 8 As shown, the second maximum compensation voltage value ΔVmax2 and the third maximum compensation voltage value ΔVmax3 are approximately equal.

[0166] That is, the second maximum compensation voltage value ΔVmax2 and the third maximum compensation voltage value ΔVmax3 can be equal. Alternatively, the second maximum compensation voltage value ΔVmax2 and the third maximum compensation voltage value ΔVmax3 can have a small difference.

[0167] In some embodiments, the plurality of sub-pixels 1 included in the display device 1000 further include white sub-pixels. Based on this, as Figure 8 As shown, the table of correspondence between the threshold voltage Vth and the compensation voltage ΔV of sub-pixel 1 can also include the correspondence between the threshold voltage Vth and the compensation voltage ΔV of white sub-pixels.

[0168] Here, by setting a white sub-pixel, it is beneficial to improve the contrast of the display device 1000 and improve the display quality of the display device 1000.

[0169] In some examples, such as Figure 8 As shown, the correspondence for the white sub-pixels includes the fourth minimum threshold voltage endpoint value Vthmin4. Where the correspondence for the blue sub-pixels includes the first minimum threshold voltage endpoint value Vthmin1, the first minimum threshold voltage endpoint value Vthmin1 is greater than the fourth minimum threshold voltage endpoint value Vthmin4.

[0170] Research indicates that the blue light emitted by the blue sub-pixel can also affect the driving transistor T2 of the pixel driving circuit 11 in the white sub-pixel, causing the threshold voltage of the driving transistor T2 in the white sub-pixel to drift negatively; while the white light emitted by the white sub-pixel has virtually no effect on the driving transistor T2 of the pixel driving circuit 11 in each sub-pixel 1, and will not cause the threshold voltage of the driving transistor T2 in each sub-pixel 1 to drift negatively.

[0171] In other words, the negative drift rate of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel is lower than that in the white sub-pixel. Within the same time period, the degree of negative drift of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel is also lower than that in the white sub-pixel.

[0172] Therefore, in the correspondence between different color sub-pixels, the first minimum threshold voltage endpoint value Vthmin1 corresponding to the blue sub-pixel will be greater than the fourth minimum threshold voltage endpoint value Vthmin4 corresponding to the white sub-pixel.

[0173] In some examples, such as Figure 8 As shown, when the correspondence of the red sub-pixel includes the second minimum threshold voltage endpoint value Vthmin2 and the correspondence of the green sub-pixel includes the third minimum threshold voltage endpoint value Vthmin3, the fourth minimum threshold voltage endpoint value Vthmin4 and the second minimum threshold voltage endpoint value Vthmin2 are approximately equal; the fourth minimum threshold voltage endpoint value Vthmin4 and the third minimum threshold voltage endpoint value Vthmin3 are approximately equal.

[0174] That is, the fourth minimum threshold voltage endpoint value Vthmin4 and the second minimum threshold voltage endpoint value Vthmin2 can be equal. Alternatively, due to unavoidable influences such as temperature, there can be a small difference between the fourth minimum threshold voltage endpoint value Vthmin4 and the second minimum threshold voltage endpoint value Vthmin2.

[0175] Furthermore, the fourth minimum threshold voltage endpoint value Vthmin4 and the third minimum threshold voltage endpoint value Vthmin3 can be equal. Alternatively, due to unavoidable influences such as temperature, there can be a small difference between the fourth minimum threshold voltage endpoint value Vthmin4 and the third minimum threshold voltage endpoint value Vthmin3.

[0176] In some examples, such as Figure 8As shown, the correspondence for the white sub-pixels also includes the fourth maximum compensation voltage value ΔVmax4. Where the correspondence for the blue sub-pixels includes the first maximum compensation voltage value ΔVmax1, the first maximum compensation voltage value ΔVmax1 is less than the fourth maximum compensation voltage value ΔVmax4.

[0177] Because the negative drift rate of the threshold voltage Vth of the driving transistor T2 in the blue sub-pixel is lower than that in the white sub-pixel, by setting different maximum compensation voltage values ​​in each correspondence, the accuracy and precision of the compensation voltages corresponding to different colors can be improved, as can the accuracy and precision of the data voltage Vg required for different colors. This reduces the absolute value of Vgs, which is beneficial for achieving black screen display while minimizing the difference in the negative drift rate of the threshold voltage Vth of the driving transistor T2 in different color sub-pixels.

[0178] In some examples, such as Figure 8 As shown, when the correspondence of the red sub-pixel includes the second maximum compensation voltage value ΔVmax2 and the correspondence of the green sub-pixel includes the third maximum compensation voltage value ΔVmax3, the fourth maximum compensation voltage value ΔVmax4 and the second maximum compensation voltage value ΔVmax2 are approximately equal; the fourth maximum compensation voltage value ΔVmax4 and the third maximum compensation voltage value ΔVmax3 are approximately equal.

[0179] That is, the fourth maximum compensation voltage value ΔVmax4 and the second maximum compensation voltage value ΔVmax2 can be equal. Alternatively, there can be a small difference between the fourth maximum compensation voltage value ΔVmax4 and the second maximum compensation voltage value ΔVmax2.

[0180] Furthermore, the fourth maximum compensation voltage value ΔVmax4 and the third maximum compensation voltage value ΔVmax3 can be equal. Alternatively, there can be a small difference between the fourth maximum compensation voltage value ΔVmax4 and the third maximum compensation voltage value ΔVmax3.

[0181] In some embodiments, the correspondence table established in S100 above also includes the correspondence between the aging degree of different color sub-pixels and the compensation voltage.

[0182] In some examples, when the display device 1000 includes a plurality of sub-pixels 1, including red sub-pixels, green sub-pixels, and blue sub-pixels, the above-mentioned correspondence table may further include: the correspondence between the aging degree of the red sub-pixels and the compensation voltage, the correspondence between the aging degree of the green sub-pixels and the compensation voltage, and the correspondence between the aging degree of the blue sub-pixels and the compensation voltage. Where the plurality of sub-pixels also includes white sub-pixels, the above-mentioned correspondence table may further include: the correspondence between the aging degree of the white sub-pixels and the compensation voltage.

[0183] In some examples, such as Figure 3 As shown, after S310 above, that is, after determining the color displayed by sub-pixel 1, the image display method provided in this disclosure further includes: S320a to S330a.

[0184] S320a, determine the aging degree of sub-pixel 1.

[0185] For example, before the display device 1000 leaves the factory, an aging test can be performed on the display device 1000 to record the changes in the aging parameters of the sub-pixel 1, form the aging pattern of the sub-pixel 1, and form the correspondence between the aging degree of the sub-pixel 1 and the compensation voltage.

[0186] For example, the aforementioned aging parameters may include, but are not limited to, the luminance and duration of sub-pixel 1. Thus, the aging pattern of sub-pixel 1 can be obtained by recording the relationship between its duration and luminance (e.g., target luminance and actual luminance). During the recording of the aging pattern of sub-pixel 1, a compensation voltage ΔV is provided, and the actual luminance of sub-pixel 1 is detected and compared with the target luminance, thereby obtaining the correspondence between the aging degree of sub-pixel 1 and the compensation voltage.

[0187] It is understandable that the aging patterns of sub-pixels of different colors can be different. For example, if a certain color sub-pixel has a higher aging rate and another color sub-pixel has a lower aging rate, then the trend of the compensation voltage ΔV changing with the degree of aging in these two colors of sub-pixels can be different.

[0188] For example, the aging degree of sub-pixel 1 is negatively correlated with the compensation voltage ΔV. That is, as... Figure 9 As shown, with increasing time, the aging degree of sub-pixel 1 gradually increases, and the compensation voltage ΔV gradually decreases. Here, the method of decreasing the compensation voltage ΔV can be selected and set according to actual needs. This disclosure does not limit it in this regard, as long as it can ensure that the display device 1000 displays a black screen and reduce the negative drift rate of the driving transistor T2.

[0189] For example, as the aging degree of sub-pixel 1 gradually increases, the compensation voltage ΔV decreases in a stepwise manner.

[0190] For example, in the correspondence of sub-pixels of different colors, the rate of decrease of the compensation voltage ΔV can be different.

[0191] Optionally, sub-pixel 1 includes a light-emitting device 12. The aging degree of the sub-pixel 1 mentioned above can refer to the aging degree of the light-emitting material of the light-emitting device 12 in the sub-pixel 1.

[0192] At this time, as Figure 4 As shown, in the above S320a, determining the aging degree of sub-pixel 1 may include: S321a to S323a.

[0193] S321a, determine the target luminous brightness of the light-emitting device 12.

[0194] For example, during the display process of the display device 1000, each sub-pixel 1 displays a corresponding grayscale when the image of each frame is refreshed. The grayscale to be displayed by each sub-pixel 1 can be determined according to the image to be displayed, that is, the target luminous brightness of the light-emitting device 12 of each sub-pixel 1 can be determined.

[0195] S322a, obtain the actual luminous brightness of the light-emitting device 12.

[0196] For example, when the display device 1000 displays an image of a certain frame, the actual luminous brightness of the light-emitting device 12 can be obtained by optical extraction.

[0197] For example, the actual luminous brightness of the light-emitting device 12 can also be determined based on the aging law of sub-pixel 1 (that is, the aging law of the light-emitting material of the light-emitting device 12).

[0198] S323a, the aging degree of the light-emitting device 12 is determined based on the target luminous brightness and the actual luminous brightness.

[0199] For example, after obtaining the target luminous brightness and the actual luminous brightness of the light-emitting device 12, the target luminous brightness and the actual luminous brightness can be compared to determine the magnitude of the difference between the target luminous brightness and the actual luminous brightness, and then the aging degree of the light-emitting device 12 can be determined based on the magnitude of the difference between the target luminous brightness and the actual luminous brightness.

[0200] S330a, based on the above correspondence and aging degree, obtain the corresponding compensation voltage ΔV.

[0201] For example, each aging level corresponds to a compensation voltage ΔV. After determining the color and aging level of sub-pixel 1, the corresponding compensation voltage ΔV can be obtained based on the correspondence between the corresponding color sub-pixels and the aging level of sub-pixel 1.

[0202] In some examples, in the above S500, the data voltage required for sub-pixel 1 is determined based on the threshold voltage Vth and the compensation voltage ΔV, including:

[0203] S500a determines the data voltage Vg required for sub-pixel 1 based on the threshold voltage Vth, the compensation voltage ΔV corresponding to the threshold voltage Vth, and the compensation voltage ΔV corresponding to the aging degree.

[0204] Here, the data voltage Vg required by sub-pixel 1 satisfies the relationship: Vg=Vs+Vth-ΔV, where ΔV can be jointly determined by the compensation voltage ΔV corresponding to the threshold voltage Vth and the compensation voltage ΔV corresponding to the aging degree.

[0205] Understandably, according to the formula for the driving signal: I = K × (Vgs - Vth)², as the aging degree of sub-pixel 1 increases, the driving signal I required for sub-pixel 1 to reach the target luminous brightness becomes larger, and correspondingly, Vgs also becomes larger. Thus, when the display device 1000 needs to display a black screen, for sub-pixel 1 with a higher degree of aging (or more severe aging), the required driving signal I can be larger. Since Vs is a constant, this means that the data voltage Vg required for sub-pixel 1 can be larger, allowing the data voltage Vg to approach Vs, and the corresponding compensation voltage ΔV can be smaller.

[0206] In the case where the display device 1000 needs to display a black screen, this disclosure can satisfy the requirements of black screen display and ensure that the data voltage Vg has a large value, thereby making Vgs have a small value. This helps to further reduce the impact of NBTS on the driving transistor T2 and reduce the negative drift rate of the driving transistor T2.

[0207] Some embodiments of this disclosure also provide an image display structure 200. For example... Figure 10 As shown, the image display structure 200 includes: a memory 2, a receiver 3, and a processor 4.

[0208] For example, the image display structure 200 can be used to implement the image display method described above.

[0209] In some examples, the memory 2 described above stores a correspondence table. This correspondence table includes at least one adjustment interval A, which includes a first threshold voltage endpoint value Vth1 and a second threshold voltage endpoint value Vth2, wherein the first threshold voltage endpoint value Vth1 is less than the second threshold voltage endpoint value Vth2; within this adjustment interval A, the compensation voltage ΔV is a constant value.

[0210] For example, the above correspondence table is the correspondence table established in S100 of the image display method. The memory 2 can store this correspondence table.

[0211] For example, before the display device 1000 leaves the factory, the correspondence table can be pre-stored in the memory 2.

[0212] In some examples, such as Figure 10 and Figure 11 As shown, the receiver 3 can be electrically connected to a plurality of sub-pixels 1 in the display device 1000 and is configured to acquire the threshold voltage Vth of each sub-pixel 1.

[0213] For example, the receiver 3 described above can be electrically connected to the pixel driving circuit 11 in each sub-pixel 1. Specifically, the receiver 3 can be electrically connected, for example, to the second terminal of the sensing transistor T3 in the pixel driving circuit 11 via the sensing signal terminal Sense.

[0214] The acquisition of the threshold voltage Vth of each sub-pixel 1 can be, for example, by having the sensing transistor T3 in the pixel driving circuit 11 acquire the threshold voltage Vth of the driving transistor T2, and then the receiver 3 acquires the threshold voltage Vth acquired by the sensing transistor T3 through the sensing signal terminal Sense.

[0215] In some examples, such as Figure 10 As shown, processor 4 can be electrically connected to memory 2 and receiver 3. Processor 4 can read information from the correspondence table stored in memory 2, and can also read the threshold voltage Vth obtained by receiver 3.

[0216] For example, the processor 4 is configured to determine the adjustment range A where the threshold voltage Vth is located according to the correspondence table, and obtain the compensation voltage ΔV corresponding to the threshold voltage Vth according to the correspondence table and the adjustment range A. Then, when the display device 1000 is to display a black screen, the processor 4 determines the data voltage Vg required by the sub-pixel 1 according to the threshold voltage Vth and the compensation voltage ΔV.

[0217] For example, processor 4 can process the information it reads. That is, processor 4 can process the threshold voltage Vth read from receiver 3 and the correspondence table read from memory 2 to determine the data voltage Vg required by sub-pixel 1.

[0218] The beneficial effects that the image display structure 200 provided in some embodiments of this disclosure can achieve are the same as the beneficial effects that the image display method provided in some embodiments above can achieve, and will not be repeated here.

[0219] In some embodiments, the plurality of sub-pixels 1 included in the display device 1000 include red sub-pixels, green sub-pixels, and blue sub-pixels. The correspondence table includes the correspondence between the threshold voltage Vth and the ΔV compensation voltage of the different colored sub-pixels.

[0220] Based on this, the processor 4 is further configured to: determine the color displayed by sub-pixel 1; determine the correspondence relationship corresponding to the color displayed by sub-pixel 1; and determine the adjustment range A in which the threshold voltage Vth is located in the correspondence relationship based on the threshold voltage Vth.

[0221] That is, when the above-mentioned multiple sub-pixels 1 include multiple color sub-pixels, the processor 4 can further process the threshold voltage Vth read from the receiver 3 and the correspondence table read from the memory 2 to determine the color of the sub-pixel 1 mentioned in the acquired threshold voltage Vth, and the adjustment range A in the corresponding correspondence.

[0222] In some embodiments, the above correspondence table also includes the correspondence between the aging degree of different color sub-pixels and the compensation voltage.

[0223] Based on this, the processor 4 is further configured to, after determining the color displayed by sub-pixel 1, determine the aging degree of sub-pixel 1; and then, according to the correspondence and the aging degree, obtain the corresponding compensation voltage ΔV. After obtaining the compensation voltage ΔV corresponding to the aging degree, the processor 4 is further configured to, according to the threshold voltage Vth, the compensation voltage ΔV corresponding to the threshold voltage Vth, and the threshold voltage ΔV corresponding to the aging degree, determine the data voltage Vg required by sub-pixel 1.

[0224] That is, the processor 4 can further process the threshold voltage Vth read from the receiver 3 and the correspondence table read from the memory 2, and determine the data voltage Vg required by the sub-pixel 1 based on the obtained threshold voltage Vth, the compensation voltage ΔV corresponding to the threshold voltage Vth, and the threshold voltage ΔV corresponding to the aging degree.

[0225] The structure of the display device 1000 provided in some embodiments of this disclosure will now be described.

[0226] In some embodiments, such as Figure 11 and Figure 12As shown, the display device 1000 further includes: an image display structure 200, a timing controller 300, and a source driver 400 as described in some of the above embodiments.

[0227] In some examples, such as Figure 11 and Figure 12 As shown, the timing controller 300 and the processor 4 in the image display structure 200 are electrically connected. The source driver 400 is electrically connected to the timing controller 300. The timing controller 300 is configured to receive a data voltage Vg determined by the processor 4 and generate a source control signal SCS based on the data voltage Vg. The source driver 400 is configured to generate a signal corresponding to the data voltage Vg based on the source control signal SCS.

[0228] For example, after the processor 4 determines the data voltage Vg required for the display device 1000 to display a black screen, it can transmit the data voltage Vg as a target value to the timing controller 300. After receiving the data voltage Vg, the timing controller 300 can generate a corresponding source control signal SCS based on the data voltage Vg.

[0229] After receiving the source control signal SCS, the source driver 400 can generate a corresponding signal. This signal is a data signal, and its voltage corresponds to the data voltage Vg.

[0230] For example, such as Figure 11 and Figure 12 As shown, the source driver 400 can also be electrically connected to the pixel driving circuit 11 in the sub-pixel 1. After generating the data signal, the source driver 400 can transmit the data signal to the pixel driving circuit 11 of the sub-pixel 1.

[0231] The beneficial effects that the display device 1000 provided in some embodiments of this disclosure can achieve are the same as the beneficial effects that the image display method provided in some embodiments above can achieve, and will not be repeated here.

[0232] In some embodiments, such as Figure 12 As shown, the display device 1000 may further include a motherboard 500 electrically connected to the display substrate 100. The motherboard 500 may, for example, be electrically connected to the display substrate 100 via a flip-chip film.

[0233] In some examples, such as Figure 12 As shown, the image display structure 200 described above can be set in the motherboard 500.

[0234] This helps to improve the integration of the display device 1000.

[0235] Some embodiments of this disclosure also provide a computer-readable storage medium storing computer program instructions that, when executed, cause a computer to perform the image display method as described in any of the above embodiments.

[0236] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0237] The beneficial effects of the computer-readable storage medium described above are the same as those of the image display method described in some of the above embodiments, and will not be repeated here.

[0238] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An image display method characterized by, The image display method is applied to a display device, and the display device includes a plurality of sub-pixels. A corresponding relationship table between threshold voltages of the sub-pixels and compensation voltages is established, the corresponding relationship table includes a plurality of adjustment intervals, each adjustment interval includes a first threshold voltage end point value and a second threshold voltage end point value, the first threshold voltage end point value is less than the second threshold voltage end point value, and the compensation voltage is a constant value in the adjustment interval; as the threshold voltage of the sub-pixel decreases, the compensation voltage decreases in a step-by-step manner; the first adjustment interval and the second adjustment interval are adjacent to each other; the average value of the threshold voltage corresponding to the first adjustment interval is less than the average value of the threshold voltage corresponding to the second adjustment interval; and the compensation voltage corresponding to the first adjustment interval is less than the compensation voltage corresponding to the second adjustment interval. The threshold voltage of each sub-pixel is obtained. The adjustment interval in which the threshold voltage is located is determined according to the corresponding relationship table. The compensation voltage corresponding to the threshold voltage is obtained according to the corresponding relationship table and the adjustment interval. In a case where the display device displays a black picture, the data voltage required by the sub-pixel is determined according to the threshold voltage and the compensation voltage, and the data voltage required by the sub-pixel satisfies Vg = Vs + Vth - ΔV. Wherein, Vg is the data voltage required by the sub-pixel, Vth is the threshold voltage of the driving transistor, ΔV is the compensation voltage of the sub-pixel, and Vs is the voltage value of the reset signal written to the second electrode of the driving transistor in the reset stage.

2. The image display method according to claim 1, characterized by, The plurality of sub-pixels includes red sub-pixels, green sub-pixels and blue sub-pixels. The corresponding relationship table includes a corresponding relationship between threshold voltages and compensation voltages of sub-pixels of different colors. The determination of the adjustment interval in which the threshold voltage is located includes: The color displayed by the sub-pixel is determined. The corresponding relationship corresponding to the color displayed by the sub-pixel is determined. The adjustment interval in which the threshold voltage is located in the corresponding relationship is determined according to the threshold voltage.

3. The image display method according to claim 2, wherein The corresponding relationship corresponding to the blue sub-pixel includes a first minimum threshold voltage end point value; The corresponding relationship corresponding to the red sub-pixel includes a second minimum threshold voltage end point value; The corresponding relationship corresponding to the green sub-pixel includes a third minimum threshold voltage end point value; The first minimum threshold voltage end point value is greater than the second minimum threshold voltage end point value; The first minimum threshold voltage end point value is greater than the third minimum threshold voltage end point value; The second minimum threshold voltage end point value is equal to the third minimum threshold voltage end point value.

4. The image display method according to claim 3, characterized by, The plurality of sub-pixels further includes a white sub-pixel. The corresponding relationship corresponding to the white sub-pixel includes a fourth minimum threshold voltage end point value; The first minimum threshold voltage end point value is greater than the fourth minimum threshold voltage end point value; The fourth minimum threshold voltage end point value is equal to the second minimum threshold voltage end point value. The fourth minimum threshold voltage endpoint value and the third minimum threshold voltage endpoint value are equal.

5. The image display method according to claim 2, wherein The correspondence table further comprises a correspondence between the aging degree of the different color sub-pixels and the compensation voltage; After the color displayed by the sub-pixel is determined, the image display method further comprises: determining the aging degree of the sub-pixel; According to the correspondence and the aging degree, a corresponding compensation voltage is obtained; According to the threshold voltage and the compensation voltage, the data voltage required by the sub-pixel is determined, comprising: According to the threshold voltage, the compensation voltage corresponding to the threshold voltage and the compensation voltage corresponding to the aging degree, the data voltage required by the sub-pixel is determined.

6. The image display method according to claim 5, wherein, The aging degree of the sub-pixel and the compensation voltage are negatively correlated.

7. The image display method according to claim 5, wherein The sub-pixel comprises a light emitting device; The determination of the aging degree of the sub-pixel comprises: determining the target light emitting brightness of the light emitting device; obtaining the actual light emitting brightness of the light emitting device; According to the target light emitting brightness and the actual light emitting brightness, the aging degree of the light emitting device is determined.

8. The image display method according to claim 1, wherein, The threshold voltage of each sub-pixel is obtained, comprising: In the case that the display device performs a shutdown action, the threshold voltage of the sub-pixel is obtained; The determination of the data voltage required by the sub-pixel comprises: In the case that the display device performs a shutdown action and a startup action, in the case that the display device is to display a black picture, the data voltage is determined according to the threshold voltage and the compensation voltage.

9. The image display method according to any one of claims 1 to 8, characterized by, The sub-pixel comprises a switching transistor, the driving transistor and a sensing transistor; The threshold voltage of each sub-pixel is obtained, comprising: the threshold voltage of the driving transistor is obtained through the sensing transistor.

10. An image display structure, characterized by comprising: The image display structure comprises: A memory stores a correspondence table; the correspondence table comprises a plurality of adjustment intervals; the adjustment interval comprises a first threshold voltage endpoint value and a second threshold voltage endpoint value; the first threshold voltage endpoint value is smaller than the second threshold voltage endpoint value; within the adjustment interval, the compensation voltage is a constant value; as the threshold voltage of the sub-pixel decreases, the change trend of the compensation voltage is: stepwise decrease; the first adjustment interval and the second adjustment interval are adjacent to each other; the average value of the threshold voltage corresponding to the first adjustment interval is smaller than the average value of the threshold voltage corresponding to the second adjustment interval; the compensation voltage corresponding to the first adjustment interval is smaller than the compensation voltage corresponding to the second adjustment interval; the data voltage required by the sub-pixel satisfies: Vg=Vs+Vth-ΔV; wherein, Vg is the data voltage required by the sub-pixel, Vth is the threshold voltage of the driving transistor, ΔV is the compensation voltage of the sub-pixel, and Vs is the voltage value of the reset signal written to the second electrode of the driving transistor in the reset stage; A receiver is electrically connected with a plurality of sub-pixels in a display device and is configured to obtain the threshold voltage of each sub-pixel; and A processor, electrically connected with the memory and the receiver, is configured to determine an adjusting interval in which the threshold voltage is located according to the correspondence table, and acquire a compensation voltage corresponding to the threshold voltage according to the correspondence table and the adjusting interval, and then determine a data voltage required by the sub-pixel according to the threshold voltage and the compensation voltage in a case that the display device is to display a black picture.

11. The image display structure according to claim 10, wherein The plurality of sub-pixels include red sub-pixels, green sub-pixels and blue sub-pixels; and the correspondence table includes a correspondence between threshold voltages and compensation voltages of sub-pixels of different colors. The processor is further configured to determine a color displayed by the sub-pixel, determine a correspondence corresponding to the color displayed by the sub-pixel, and determine an adjusting interval in which the threshold voltage is located in the correspondence according to the threshold voltage.

12. The image display structure according to claim 11, wherein The correspondence table further includes a correspondence between aging degrees and compensation voltages of sub-pixels of different colors. The processor is further configured to determine an aging degree of the sub-pixel after determining the color displayed by the sub-pixel, and acquire a corresponding compensation voltage according to the correspondence and the aging degree. The processor is further configured to determine the data voltage required by the sub-pixel according to the threshold voltage, the compensation voltage corresponding to the threshold voltage and the compensation voltage corresponding to the aging degree.

13. A display device comprising: The display device includes: a display substrate including a plurality of sub-pixels; The image display structure according to any one of claims 10-12; a timing controller electrically connected with the processor in the image display structure; the timing controller is configured to receive the data voltage determined by the processor, and generate a source control signal according to the data voltage; and a source driver electrically connected with the timing controller; the source driver is configured to generate a signal corresponding to the data voltage according to the source control signal.

14. The display device of claim 13, wherein, The display device further includes a mainboard electrically connected with the display substrate; The image display structure is arranged in the mainboard.

15. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer program instructions, which, when executed, cause the computer to perform the image display method according to any one of claims 1-9. The computer readable storage medium stores computer program instructions, which, when executed, cause the computer to perform the image display method according to any one of claims 1-9.

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