Display method, display panel and display equipment

Abstract

The invention relates to a display method, a display panel and display equipment. The display method is applied to the display panel, the display panel comprises a first display area and a second display area, the refresh frequency of the first display area is different from the refresh frequency of the second display area, and the method comprises the steps that firstly, the refresh frequency of the first display area is larger than that of the second display area; acquiring a first driving parameter of the first display area for controlling the display brightness of the first display area in the local refresh working mode, then determining a second driving parameter for controlling the display brightness of the second display area in the local refresh working mode according to the first driving parameter, and finally controlling the display brightness of the second display area in the local refresh working mode according to the second driving parameter. And determining a target driving time sequence according to the first driving parameter and the second driving parameter, and refreshing the display panel in a local refreshing working mode according to the target driving time sequence. By adopting the method, the difference between the display brightness of the first display area and the display brightness of the second display area can be reduced, so that the problem of different display brightness of different display areas is solved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display method, a display panel and a display device. Background Art

[0002] With the development of display technology, LTPO (Low Temperature Polycrystalline Oxide) technology has emerged. LTPO combines the advantages of two TFT driving technologies, LTPS (Low Temperature Poly-Silicon) and IGZO (Indium Gallium Zinc Oxide), and shows strong competitiveness in terms of lifespan, brightness, resolution and low power consumption. Therefore, it has become an important trend in the field of smart terminal screens.

[0003] At present, AMOLED (Active-matrix organic light-emitting diode) LTPO products have introduced partition refresh display technology. However, the partition refresh method may have the problem of different brightness in the display area. Summary of the invention

[0004] Based on this, it is necessary to provide a display method, a display panel and a display device that can improve the problem of different display brightness in different display areas in response to the above technical problems.

[0005] In a first aspect, the present application provides a display method, which is applied to a display panel, wherein the display panel includes a first display area and a second display area, and a refresh frequency of the first display area is different from a refresh frequency of the second display area, and the method includes:

[0006] Acquire a first driving parameter of the first display area, where the first driving parameter is used to control the display brightness of the first display area in a partial refresh working mode;

[0007] Determining a second driving parameter according to the first driving parameter, wherein the second driving parameter is used to control the display brightness of the second display area in the partial refresh working mode;

[0008] A target driving timing is determined according to the first driving parameter and the second driving parameter, and the display panel is refreshed in the partial refresh working mode according to the target driving timing.

[0009] In one embodiment, the first driving parameter includes a first reset signal, the second driving parameter includes a second reset signal, and determining the second driving parameter according to the first driving parameter includes:

[0010] The pulse width of the second reset signal is determined according to a difference between the pulse width of the first reset signal and a first preset threshold.

[0011] In one embodiment, the first driving parameter includes a first control signal, the second driving parameter includes a second control signal, and determining the second driving parameter according to the first driving parameter includes:

[0012] The pulse width of the second control signal is determined according to the sum of the pulse width of the first control signal and a second preset threshold.

[0013] In one embodiment, the first driving parameter includes a first initialization signal, the second driving parameter includes a second initialization signal, and determining the second driving parameter according to the first driving parameter includes:

[0014] The level of the second initialization signal is determined according to a difference between the level of the first initialization signal and a third preset threshold.

[0015] In one embodiment, the refresh frequency of the first display area is greater than the refresh frequency of the second display area.

[0016] In one embodiment, the first reset signal and the second reset signal are reset signals of a driving transistor.

[0017] In one embodiment, the first control signal and the second control signal are light emitting control signals EM.

[0018] In one embodiment, the first initialization signal and the second initialization signal are positive electrode initialization signals.

[0019] In a second aspect, the present application further provides a display panel, the display panel comprising a first display area and a second display area, the refresh frequency of the first display area is different from the refresh frequency of the second display area, the display panel comprises a plurality of pixel driving circuits, and the display panel refreshes the plurality of pixel driving circuits in a local refresh working mode according to a target driving timing;

[0020] Among them, the target drive timing is determined based on the first drive parameter and the second drive parameter, the first drive parameter is used to control the display brightness of the first display area in the local refresh working mode; the second drive parameter is used to control the display brightness of the second display area in the local refresh working mode, and the second drive parameter is determined based on the first drive parameter of the first display area.

[0021] In a third aspect, the present application further provides a display device, comprising a display panel as described in the second aspect above or a display method as described in any one of the first aspect above for display.

[0022] The above-mentioned display method, display panel and display device, the display method is applied to a display panel, the display panel includes a first display area and a second display area, wherein the refresh frequency of the first display area is different from the refresh frequency of the second display area, and the display method includes: first, obtaining a first driving parameter of the first display area for controlling the display brightness of the first display area in a local refresh working mode, then determining a second driving parameter for controlling the display brightness of the second display area in a local refresh working mode according to the first driving parameter, and finally determining a target driving timing according to the first driving parameter and the second driving parameter, and refreshing the display panel in the local refresh working mode according to the target driving timing. In this way, for the first display area and the second display area with different refresh frequencies, the display brightness of the first display area and the second display area in the local refresh working mode are respectively controlled by different first driving parameters and second driving parameters, the difference in display brightness of the first display area and the second display area is reduced, thereby improving the problem of different display brightness of different display areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic flow chart showing a method in one embodiment;

[0025] Figure 2 is a schematic diagram of the structure of a display panel in one embodiment;

[0026] Figure 3 A schematic diagram of a partition refresh of a display panel in one embodiment;

[0027] Figure 4is a schematic diagram of a pixel driving circuit structure of a display panel in another embodiment;

[0028] Figure 5 It is a schematic diagram of the existing driving timing in another embodiment;

[0029] Figure 6 It is a target driving timing diagram after the pulse width of the SP2 reset signal is modified in another embodiment;

[0030] Figure 7 It is a schematic diagram of the existing driving timing in another embodiment;

[0031] Figure 8 It is a schematic diagram of target driving timing after the pulse width of the light emitting control signal EM is modified in another embodiment;

[0032] Fig. 9 It is a schematic diagram of the existing driving timing in another embodiment;

[0033] Fig.10 It is a target driving timing diagram after the level of the VREFN2 OLED anode initialization signal is modified in another embodiment;

[0034] Fig.11 It is a schematic diagram showing the effect of the method in one embodiment. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0036] Hereinafter, although terms such as "first", "second", etc. may be used to describe various components, these components are not necessarily limited to the above terms. The above terms are only used to distinguish one component from another component. It will also be understood that expressions used in the singular form include plural expressions, unless the expression in the singular form has a significantly different meaning in the context. In addition, in the following embodiments, it will also be understood that the terms "comprising" and / or "having" used herein illustrate the presence of the stated features or components, but do not exclude the presence or addition of one or more other features or components.

[0037] As used in the application documents, the term "and / or" includes any and all combinations of one or more of the related listed items. When a statement such as "at least one (one) of..." is placed after a list of elements (elements), it modifies the entire list of elements (elements), rather than modifying the individual elements (elements) in the list (elements).

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] It should also be understood that the terms “include / comprises” or “having” and the like specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0040] With the development of display technology, LTPO technology has emerged. By combining the advantages of LTPS and IGZO TFT driving technologies, LTPO has demonstrated strong competitiveness in terms of lifespan, brightness, resolution and low power consumption. Therefore, it has become an important trend in the field of smart terminal screens.

[0041] At present, AMOLED LTPO products have a partition refresh display technology, that is, the entire screen is divided into multiple display areas, which are refreshed at different refresh rates, such as 1hz-120hz-1hz. However, the partition refresh method may have the problem of different brightness of display areas with different refresh rates.

[0042] In view of this, an embodiment of the present application provides a display method applied to a display panel, which controls the display brightness of the first display area and the second display area in a local refresh working mode respectively through different first driving parameters and second driving parameters for a first display area and a second display area with different refresh frequencies, thereby reducing the difference in display brightness between the first display area and the second display area, thereby improving the problem of different display brightness in different display areas.

[0043] It should be noted that the display method provided in the embodiment of the present application may be executed by a display panel, which may be integrated into a display device. Various electronic devices may be provided with a display device, and the electronic device may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, and other devices with display functions, which are not fully exemplified here. The following description will be given by taking the application of the method to a display device as an example.

[0044] In one embodiment of the present application, Figure 1 As shown, a display method is provided, which is applied to a display panel, wherein the display panel includes a first display area and a second display area, and the refresh frequency of the first display area is different from the refresh frequency of the second display area, and includes the following steps:

[0045] Step 101: Acquire a first driving parameter of a first display area.

[0046] Among them, the first driving parameter is used to control the display brightness of the first display area in the local refresh working mode. In order to improve the energy efficiency of the display panel, the display panel can be divided into multiple display areas, and the local refresh working mode is that different display areas are refreshed using different refresh frequencies, for example, divided into a first display area and a second display area, and optionally, the refresh frequency of the first display area is greater than the refresh frequency of the second display area. The first display area can be a high-frequency refresh area, and the second display area can be a low-frequency refresh area. The second display area can also include multiple sub-display areas, and the refresh frequencies of the multiple sub-display areas can be the same or different, and the embodiments of the present application do not limit this.

[0047] Optionally, the following description is made by taking an example that the second display area includes two sub-display areas, and the refresh frequencies of the two sub-display areas are the same, that is, the display panel is divided into three display areas in total, such as Figure 2 As shown, it includes a first display area and a second display area, wherein the second display area includes two upper and lower sub-display areas.

[0048] At present, the high and low frequency refresh of LTPO 3.0 partitions is achieved by adding two scan SCAN control signals SWN1 and SWN2 in the GIP (Gate in Panel) circuit, where the gate drive circuit is integrated on the display panel.

[0049] like Figure 3 As shown, Figure 2 When the refresh frequency of the display panel shown is 60hz refresh of the upper second display area, 120hz refresh of the middle first display area, and 60hz refresh of the lower second display area, the refresh mode of the display panel is that in the first frame, SWN1 and SWN2 are both low potential, so that all display areas of 1 frame are fully refreshed, that is, the first frame is a full refresh working mode. In the second frame, the upper second display areas SWN1 and SWN2 are both high potential and not refreshed, the middle first display areas SWN1 and SWN2 are both low potential refreshed, and the lower second display areas SWN1 and SWN2 are both high potential and not refreshed, that is, the second frame is a partial refresh working mode. In this way, two frames are a cycle, that is, the middle first display area of ​​the display panel is refreshed at 120hz, and the upper and lower second display areas of the display panel are refreshed at 60hz.

[0050] Similarly, when Figure 2The refresh rate of the display panel shown is 40 Hz for the upper second display area, 120 Hz for the middle first display area, and 40 Hz for the lower second display area. Figure 3 As shown, the first frame is the full refresh mode, and the second and third frames are the partial refresh modes. When the refresh rate of the display panel is 30 Hz refresh of the upper second display area, 120 Hz refresh of the middle first display area, and 30 Hz refresh of the lower second display area, as shown in FIG. Figure 3 As shown, the first frame is the full refresh mode, and the second, third and fourth frames are partial refresh modes. When the refresh rate of the display panel is 1 Hz refresh of the upper second display area, 120 Hz refresh of the middle first display area and 1 Hz refresh of the lower second display area, as shown in FIG. Figure 3 As shown, the first frame is the full refresh working mode, the second frame, the third frame, the fourth frame to the 119th frame are the partial refresh working modes, and the other partition refresh modes with different frequencies are analogous in this way.

[0051] LTPO pixel driving circuit Figure 4 As shown, since the TFT in the low-frequency refresh area leaks more charge than that in the high-frequency refresh area, there may be a brightness difference between the low-frequency refresh area and the high-frequency refresh area, that is, in the local refresh working mode, the brightness of the low-frequency refresh area is brighter than that of the high-frequency refresh area. Therefore, the display brightness of display areas with different refresh frequencies can be controlled by different driving parameters. Optionally, the driving parameters of the first display area in the local refresh working mode under the existing driving timing are obtained. The driving parameters may include the following: Figure 4 The pixel driving circuit shown includes an SP1 reset signal, an SP2 reset signal, a light emitting control signal EM, a voltage Vrefp, and a voltage Vrefn2.

[0052] Step 102: Determine a second driving parameter according to the first driving parameter.

[0053] The second driving parameter is used to control the display brightness of the second display area in the partial refresh working mode. Optionally, the second driving parameter is determined according to the brightness difference between the first display area and the second display area and the first driving parameter. For example, if the display brightness of the second display area is brighter than that of the first display area, the value of the second driving parameter is adjusted according to the value of the first driving parameter to reduce the display brightness of the second display area, thereby reducing the brightness difference with the first display area.

[0054] Step 103 , determining a target driving timing according to the first driving parameter and the second driving parameter, and refreshing the display panel in a partial refresh working mode according to the target driving timing.

[0055] After the second driving parameter is determined, the value of the second driving parameter in the existing driving timing is updated according to the second driving parameter to obtain the target driving timing, and the display panel is refreshed in the local refresh working mode according to the target driving timing. Therefore, in the local refresh working mode, the driving parameters of the display areas with different frequencies in the target driving timing are different, the first driving parameter controls the display brightness of the first display area, and the second driving parameter controls the display brightness of the second display area, thereby realizing the partition control of the display brightness and reducing the brightness difference of different display areas.

[0056] In the above embodiment, the display method is applied to a display panel, and the display panel includes a first display area and a second display area, wherein the refresh frequency of the first display area is different from the refresh frequency of the second display area, and the display method includes: first, obtaining a first driving parameter of the first display area for controlling the display brightness of the first display area in a local refresh working mode, then determining a second driving parameter for controlling the display brightness of the second display area in a local refresh working mode according to the first driving parameter, and finally determining a target driving timing according to the first driving parameter and the second driving parameter, and refreshing the display panel in the local refresh working mode according to the target driving timing. In this way, for the first display area and the second display area with different refresh frequencies, the display brightness of the first display area and the second display area in the local refresh working mode are respectively controlled by different first driving parameters and second driving parameters, thereby reducing the difference in display brightness between the first display area and the second display area, thereby improving the problem of different display brightness in different display areas.

[0057] In an embodiment of the present application, the first driving parameter includes a first reset signal, the second driving parameter includes a second reset signal, and determining the second driving parameter according to the first driving parameter includes:

[0058] The pulse width of the second reset signal is determined according to the difference between the pulse width of the first reset signal and the first preset threshold.

[0059] Optionally, the first reset signal and the second reset signal are SP2 reset signals. The SP2 reset signal is a reset signal of the driving transistor, which is used to compensate the driving transistor at a low frequency. Figure 4 As shown in Figure 2, the driving transistor is Figure 4The transistor T1 in the circuit. The SP2 reset signal is a pulse signal. In the existing driving timing, the pulse widths of the SP2 reset signal of the first display area and the SP2 reset signal of the second display area are designed to be equal in width. In order to reduce the brightness difference between different display areas, the pulse widths of the SP2 reset signals of different display areas can be adjusted. Usually, within a frame, the more thoroughly the SP2 reset signal is reset, the brighter the display brightness of the display area. Therefore, the pulse width of the SP2 reset signal of the second display area with brighter display brightness is reduced, that is, the difference between the pulse width of the SP2 reset signal of the first display area and the first preset threshold is used as the pulse width of the SP2 reset signal of the second display area, which can reduce the display brightness of the second display area, thereby reducing the brightness difference between the second display area and the first display area. Among them, the first preset threshold can be debugged and determined according to the actual RC load of the second display area, and the first preset threshold is a positive number.

[0060] For example, if the second display area is Figure 2 As shown, it includes two sub-display areas, such as Figure 5 As shown, in the existing driving timing, the pulse width of the SP2 reset signal of all display areas of the display panel is t1. In order to reduce the brightness difference between the second display area and the first display area, the pulse width of the SP2 reset signal of the upper second display area is adjusted to t2, t2=t1-△t1, △t1 is the first preset threshold, and the pulse width of the SP2 reset signal of the lower second display area is t3, t3=t1-△t4, △t4 is the fourth preset threshold, wherein, since the RC loads of the upper second display area and the lower second display area are different, the first preset threshold and the fourth preset threshold may be the same or may be different. According to the SP2 reset signal of each display area, the target driving timing is determined, such as Figure 6 As shown, the display panel is refreshed in the partial refresh working mode according to the target driving timing.

[0061] In one embodiment, the first driving parameter includes a first control signal, the second driving parameter includes a second control signal, and determining the second driving parameter according to the first driving parameter includes:

[0062] The pulse width of the second control signal is determined according to the sum of the pulse width of the first control signal and the second preset threshold.

[0063] Optionally, the first control signal and the second control signal are the light-emitting control signal EM. The light-emitting control signal EM is a pulse signal. In the existing driving timing, the pulse widths of the light-emitting control signal EM of the first display area and the light-emitting control signal EM of the second display area are designed to be equal in width. In order to reduce the brightness difference between different display areas, the pulse widths of the light-emitting control signals EM of different display areas can be adjusted. Usually, within a frame, the wider the high-level pulse width of the light-emitting control signal EM, the darker the display brightness of the display area. Therefore, the pulse width of the light-emitting control signal EM of the second display area with brighter display brightness is increased, that is, the sum of the high-level pulse width of the light-emitting control signal EM of the first display area and the second preset threshold is used as the high-level pulse width of the light-emitting control signal EM of the second display area, which can reduce the display brightness of the second display area, thereby reducing the brightness difference between the second display area and the first display area. Among them, the second preset threshold can be debugged and determined according to the actual RC load of the second display area, and the second preset threshold is a positive number.

[0064] For example, if the second display area is Figure 2 As shown, it includes two sub-display areas, such as Figure 7 As shown, in the existing driving timing, the pulse width of the light-emitting control signal EM of all display areas of the display panel is t1. In order to reduce the brightness difference between the second display area and the first display area, the pulse width of the light-emitting control signal EM of the upper second display area is adjusted to t2, t2=t1+△t2, △t2 is the second preset threshold, and the pulse width of the light-emitting control signal EM of the lower second display area is t3, t3=t1+△t5, △t5 is the fifth preset threshold, wherein, since the RC loads of the upper second display area and the lower second display area are different, the second preset threshold and the fifth preset threshold may be the same or may be different. According to the light-emitting control signal EM of each display area, the target driving timing is determined, such as Figure 8 As shown, the display panel is refreshed in the partial refresh working mode according to the target driving timing.

[0065] In one embodiment, the first driving parameter includes a first initialization signal, the second driving parameter includes a second initialization signal, and determining the second driving parameter according to the first driving parameter includes:

[0066] The level of the second initialization signal is determined according to a difference between the level of the first initialization signal and a third preset threshold.

[0067] Optionally, the first initialization signal and the second initialization signal are VREFN2 OLED anode initialization signals. In the existing driving timing, the level of the VREFN2 OLED anode initialization signal of the first display area is the same as the level of the VREFN2 OLED anode initialization signal of the second display area. In order to reduce the brightness difference between different display areas, the level of the VREFN2 OLED anode initialization signal of different display areas can be adjusted. Generally, within a frame, the larger the level of the VREFN2 OLED anode initialization signal, the brighter the display brightness of the display area. Therefore, the level of the VREFN2 OLED anode initialization signal of the second display area with brighter display brightness is reduced, that is, the difference between the level of the VREFN2 OLED anode initialization signal of the first display area and the third preset threshold is used as the level of the VREFN2OLED anode initialization signal of the second display area, which can reduce the display brightness of the second display area, thereby reducing the brightness difference between the second display area and the first display area. Among them, the third preset threshold can be debugged and determined according to the actual RC load of the second display area, and the third preset threshold is a positive number.

[0068] For example, if the second display area is Figure 2 As shown, it includes two sub-display areas, such as Fig. 9 As shown, in the existing driving timing, the level of the VREFN2 OLED anode initialization signal of all display areas of the display panel is VREFN2. In order to reduce the brightness difference between the second display area and the first display area, the level of the VREFN2 OLED anode initialization signal of the upper second display area is adjusted to VREFN2', VREFN2'=VREFN2-△t3, △t3 is the third preset threshold, and the level of the VREFN2 OLED anode initialization signal of the lower second display area is VREFN2", VREFN2"=VREFN-△t6, △t6 is the sixth preset threshold, wherein, since the RC loads of the upper second display area and the lower second display area are different, the third preset threshold and the sixth preset threshold may be the same or may be different. According to the level of the VREFN2 OLED anode initialization signal of each display area, the target driving timing is determined, such as Fig.10 As shown, the display panel is refreshed in the partial refresh working mode according to the target driving timing.

[0069] In the above embodiment, the driving parameters of the display panel may include the above multiple types, and the brightness of different display areas can be controlled separately by adjusting the SP2 reset signal of the GIP circuit of different display areas, the pulse width of the light control signal EM, or the level of the VREFN2 OLED anode initialization signal, thereby reducing the brightness difference between different display areas. The above driving parameters can be adjusted using only one of them, or two of them can be adjusted at the same time, or three of them can be adjusted at the same time, and the embodiment of the present application does not limit this. Fig.11 As shown, it is a comparison of the display brightness before and after the display panel is adjusted according to the display method. It can be seen that the brightness difference between different display areas of the display panel is reduced after the adjustment.

[0070] In an embodiment of the present application, a display panel is further provided, which executes a display method as described in any of the above embodiments, wherein the display panel includes a first display area and a second display area, the refresh frequency of the first display area is different from the refresh frequency of the second display area, the display panel includes multiple pixel driving circuits, and the display panel refreshes the multiple pixel driving circuits in a local refresh working mode according to a target driving timing; wherein the target driving timing is determined based on a first driving parameter and a second driving parameter, the first driving parameter is used to control the display brightness of the first display area in the local refresh working mode; the second driving parameter is used to control the display brightness of the second display area in the local refresh working mode, and the second driving parameter is determined based on the first driving parameter of the first display area.

[0071] In one embodiment, the present application further provides a display device, which includes a display panel as described in any one of the above embodiments or performs display according to the display method in the above method embodiments.

[0072] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0073] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A display method, applied to a display panel, wherein the display panel comprises a first display area and a second display area, wherein a refresh frequency of the first display area is different from a refresh frequency of the second display area, wherein: The method comprises: Acquire a first driving parameter of the first display area, where the first driving parameter is used to control the display brightness of the first display area in a partial refresh working mode; Determining a second driving parameter according to the first driving parameter, wherein the second driving parameter is used to control the display brightness of the second display area in the partial refresh working mode; A target driving timing is determined according to the first driving parameter and the second driving parameter, and the display panel is refreshed in the partial refresh working mode according to the target driving timing.

2. The method according to claim 1, characterized in that The first driving parameter includes a first reset signal, the second driving parameter includes a second reset signal, and determining the second driving parameter according to the first driving parameter includes: The pulse width of the second reset signal is determined according to a difference between the pulse width of the first reset signal and a first preset threshold.

3. The method according to claim 1, characterized in that The first driving parameter includes a first control signal, the second driving parameter includes a second control signal, and determining the second driving parameter according to the first driving parameter includes: The pulse width of the second control signal is determined according to the sum of the pulse width of the first control signal and a second preset threshold.

4. The method according to claim 1, characterized in that: The first driving parameter includes a first initialization signal, the second driving parameter includes a second initialization signal, and determining the second driving parameter according to the first driving parameter includes: The level of the second initialization signal is determined according to a difference between the level of the first initialization signal and a third preset threshold.

5. The method according to any one of claims 1 to 4, characterized in that: A refresh frequency of the first display area is greater than a refresh frequency of the second display area.

6. The method according to claim 2, characterized in that The first reset signal and the second reset signal are reset signals for driving transistors.

7. The method according to claim 3, characterized in that The first control signal and the second control signal are light emitting control signals EM.

8. The method according to claim 4, characterized in that The first initialization signal and the second initialization signal are positive electrode initialization signals.

9. A display panel, characterized in that: The display panel comprises a first display area and a second display area, the refresh frequency of the first display area is different from the refresh frequency of the second display area, the display panel comprises a plurality of pixel driving circuits, and the display panel refreshes the plurality of pixel driving circuits in a local refresh working mode according to a target driving timing; Among them, the target drive timing is determined based on a first drive parameter and a second drive parameter, the first drive parameter is used to control the display brightness of the first display area in the local refresh working mode; the second drive parameter is used to control the display brightness of the second display area in the local refresh working mode, and the second drive parameter is determined based on the first drive parameter of the first display area.

10. A display device, characterized in that: The display comprises the display panel as claimed in claim 9 or the display method as claimed in any one of claims 1 to 8 for display.

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