Frequency adjustment method of display panel, frequency difference threshold acquisition method and related device

Abstract

The application discloses a frequency adjustment method and a frequency difference threshold acquisition method of a display panel and related devices. The method comprises: in response to a refresh frequency adjustment instruction, obtaining a target refresh frequency of a display area to be adjusted; determining a frequency difference threshold corresponding to the target refresh frequency according to a first correspondence relationship; wherein the first correspondence relationship is a correspondence relationship between the refresh frequency and the frequency difference threshold; adjusting an actual refresh frequency of a first display area according to the target refresh frequency, so that the difference between the maximum refresh frequency and the minimum refresh frequency of multiple display areas in a single image frame is less than or equal to the frequency difference threshold; the display area to be adjusted is at least one of the multiple display areas, and the first display area is at least one of the multiple display areas. According to the embodiment of the application, the difference between the refresh frequencies of different areas can be avoided from being too large during the refresh frequency switching process, the uniformity of the display effect is improved, and the visual experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a frequency adjustment method of a display panel, a frequency difference threshold acquisition method and related devices. BACKGROUND

[0002] At present, a display panel is usually composed of a plurality of light-emitting pixels arranged in an array, and the light-emitting pixels include a pixel circuit and a light-emitting element. The pixel circuit is usually composed of a TFT (Thin Film Transistor) and a capacitor. The light-emitting element can usually include an OLED (Organic Light-Emitting Diode) or other light-emitting devices.

[0003] The display area of the display panel can be divided into a plurality of display regions and be displayed in a partitioned manner. The refresh frequencies of the display regions can be consistent or different from each other. When displaying an image, the refresh frequencies suitable for the display regions can be determined according to the image content to be displayed, and the display regions can be driven to display at different refresh frequencies, so that different display regions can be displayed according to the display content.

[0004] Because the same Gamma register value is used in the display driving process at different refresh frequencies, taking any two display regions in the display panel as an example, when displaying an image at the same brightness level and the same gray scale, the actual light-emitting brightness of the two display regions will be different due to the different refresh frequencies. Moreover, when the difference between the refresh frequencies of the two display regions is large, the uniformity of the display effect will be affected. The user will be able to perceive the brightness difference between the display regions when watching the display image, thereby affecting the user's visual experience. SUMMARY

[0005] Embodiments of the present application provide a frequency adjustment method of a display panel, a frequency difference threshold acquisition method and related devices, which can improve the technical problem that the brightness difference between display regions is large when different display regions are displayed at different refresh frequencies.

[0006] In a first aspect, embodiments of the present application provide a frequency adjustment method of a display panel, applied to a display panel including a plurality of display regions; the method comprises:

[0007] In response to a refresh frequency adjustment instruction, a target refresh frequency of a display region to be adjusted is obtained;

[0008] A frequency difference threshold corresponding to the target refresh frequency is determined according to a first correspondence relationship; wherein the first correspondence relationship is a correspondence relationship between a refresh frequency and a frequency difference threshold;

[0009] According to the target refresh frequency, the actual refresh frequency of the first display area is adjusted, so that in a single image frame, the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas is less than or equal to the frequency difference threshold; the display area to be adjusted is at least one of the plurality of display areas, and the first display area is at least one of the plurality of display areas.

[0010] In a second aspect, the embodiments of the present application provide a frequency difference threshold acquisition method, which comprises:

[0011] A refresh frequency comparison instruction is sent to the to-be-tested panel, so that the to-be-tested panel adjusts the frequency difference of the refresh frequencies of the two display areas when displaying different image frames; wherein one of the two display areas remains a fixed refresh frequency.

[0012] According to the luminous brightness values corresponding to the two display areas under different image frames, the luminance difference under different image frames is determined; the luminous brightness value is obtained by optical detection of the image frame by the optical detection module.

[0013] The frequency difference threshold corresponding to the fixed refresh frequency is determined according to the maximum frequency difference of the plurality of frequency differences corresponding to the image frames with a luminance difference less than the luminous difference threshold.

[0014] A first correspondence relationship is generated according to the plurality of fixed refresh frequencies and the corresponding frequency difference thresholds; the first correspondence relationship is used to implement the frequency adjustment method of the display panel according to any one of claims 1-8.

[0015] In a third aspect, the embodiments of the present application provide a display panel frequency adjustment device, which comprises:

[0016] The acquisition module is configured to acquire a target refresh frequency of a display area to be adjusted in response to a refresh frequency adjustment instruction.

[0017] The frequency difference threshold determination module is configured to determine a frequency difference threshold corresponding to the target refresh frequency according to the first correspondence relationship; wherein the first correspondence relationship is a correspondence relationship between the refresh frequency and the frequency difference threshold.

[0018] The adjustment module is configured to adjust the actual refresh frequency of the first display area according to the target refresh frequency, so that in a single image frame, the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas is less than or equal to the frequency difference threshold.

[0019] In a fourth aspect, the embodiments of the present application provide a display panel frequency adjustment device, which comprises a processor and a memory storing computer program instructions.

[0020] The processor executes the computer program instructions to implement the display panel frequency adjustment method of the first aspect.

[0021] In a fifth aspect, an embodiment of the present application provides a computer storage medium, characterized in that the computer storage medium stores computer program instructions, and the computer program instructions are executed by a processor to implement the frequency adjustment method of the display panel according to the first aspect.

[0022] Compared with the prior art, the frequency adjustment method of the display panel, the frequency difference threshold acquisition method and the related apparatus provided by the embodiments of the present application can determine the target refresh frequency of the display area to be adjusted through the refresh frequency adjustment instruction. According to the first corresponding relationship, the frequency difference threshold corresponding to the target refresh frequency can be determined. Under the limitation of the frequency difference threshold, the actual refresh frequency of the first display area can be adjusted so that the refresh frequency difference between different display areas does not exceed the frequency difference threshold, thereby avoiding that the brightness difference between different display areas is obvious due to the too large refresh frequency difference, improving the uniformity of the display effect, and improving the visual experience of the user. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 is a flowchart of the frequency adjustment method of the display panel provided by an embodiment of the present application;

[0025] Figure 2 is a flowchart of the frequency adjustment method of the display panel provided by another embodiment of the present application;

[0026] Figure 3 is a schematic diagram of the display area of the display panel provided by an embodiment of the present application;

[0027] Figure 4 is a flowchart of the frequency adjustment method of the display panel provided by still another embodiment of the present application;

[0028] Figure 5 is a flowchart of the frequency adjustment method of the display panel provided by yet another embodiment of the present application;

[0029] Figure 6 is a flowchart of the frequency adjustment method of the display panel provided by still another embodiment of the present application;

[0030] Figure 7 is a flowchart of the frequency difference threshold acquisition method provided by an embodiment of the present application;

[0031] Figure 8is a structural schematic diagram of a frequency adjustment device of a display panel provided by an embodiment of the present application.

[0032] Figure 9 is a structural schematic diagram of a frequency adjustment device of a display panel provided by an embodiment of the present application. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present application will be described below in detail, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0034] It should be noted that, in this paper, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The embodiments will be described in detail below in combination with the drawings.

[0036] At present, a display panel is usually composed of a plurality of light-emitting pixels arranged in an array, and the light-emitting pixel includes a pixel circuit and a light-emitting element. The pixel circuit is usually composed of a TFT (Thin Film Transistor) and a capacitor. The light-emitting element can usually include an OLED (Organic Light-Emitting Diode) or other light-emitting devices.

[0037] The display area of the display panel can be divided into multiple display regions and be displayed in partitions, and the refresh frequencies of the display regions can be consistent or different. When displaying an image frame, the appropriate refresh frequency of each display region can be determined according to the image content to be displayed, and each display region is driven to display at different refresh frequencies, so that different display regions can be displayed according to the display content.

[0038] Because the same Gamma register value is used in the display driving process under different refresh frequencies, taking any two display regions in the display panel as an example, when displaying an image frame with the same brightness level and the same gray scale, the difference in actual luminance of the two display regions will be caused by the different refresh frequencies of the two display regions. Moreover, when the difference in refresh frequencies of the two display regions is large, the uniformity of the display effect will be affected. The user will be able to perceive the difference in luminance between the display regions when watching the display image, thereby affecting the user's visual experience.

[0039] To solve the above technical problems, the embodiments of the present application provide a display panel frequency adjustment method, a frequency difference threshold acquisition method and related devices. First, the display panel frequency adjustment method provided by the embodiments of the present application is introduced.

[0040] Figure 1 A flowchart of the display panel frequency adjustment method provided by an embodiment of the present application is shown. The display panel frequency adjustment method is applied to a display panel including multiple display regions, and the display panel frequency adjustment method includes:

[0041] S110, in response to a refresh frequency adjustment instruction, obtaining a target refresh frequency of a display region to be adjusted;

[0042] S120, determining a frequency difference threshold corresponding to the target refresh frequency according to a first correspondence relationship; wherein the first correspondence relationship is a correspondence relationship between refresh frequencies and frequency difference thresholds;

[0043] S130, adjusting the actual refresh frequency of the first display region according to the target refresh frequency, so that the difference between the maximum refresh frequency and the minimum refresh frequency of the multiple display regions in a single image frame is less than or equal to the frequency difference threshold; the display region to be adjusted is at least one of the multiple display regions, and the first display region is at least one of the multiple display regions.

[0044] The frequency adjustment method of the display panel provided in the embodiments of the present application can be applied to a display panel. The device can adjust the refresh frequencies of the display regions according to the refresh frequency adjustment instruction, so that the difference between the refresh frequencies of the display regions after adjustment is not too large. The display panel can be a PC, a television, a display, a mobile terminal, a tablet computer, a wearable device, or the like. The specific form of the display panel is not limited in the embodiments.

[0045] In the embodiments, the target refresh frequency of the display region to be adjusted can be determined through the refresh frequency adjustment instruction. The frequency difference threshold corresponding to the target refresh frequency can be determined according to the first correspondence relationship. Under the limitation of the frequency difference threshold, the actual refresh frequency of the first display region can be adjusted, so that the difference between the maximum value and the minimum value in the refresh frequencies of the display regions satisfies the requirement of the frequency difference threshold, the difference between the refresh frequencies of different display regions does not exceed the frequency difference threshold, the brightness difference between different display regions caused by the large difference between the refresh frequencies is avoided, the uniformity of the display effect is improved, and the visual experience of the user is improved.

[0046] In S110, the frequency adjustment method of the display panel can be applied to a display panel including a plurality of display regions. The plurality of display regions of the display panel can be adjusted in refresh frequency respectively and independently. That is, the refresh frequencies of different display regions in the display panel can be the same or different.

[0047] When the image picture to be displayed has a refresh frequency adjustment requirement for part of the display regions in the plurality of display regions, the application processor or other image data generation module can generate a corresponding refresh frequency adjustment instruction according to the refresh frequency requirement of the actual image picture. The display panel can determine the corresponding display region to be adjusted in the plurality of display regions and determine the target refresh frequency of the display region to be adjusted after refresh frequency adjustment in response to the refresh frequency adjustment instruction.

[0048] The display region to be adjusted can be at least one of the plurality of display regions, and when the display region to be adjusted includes two or more display regions, the target refresh frequencies of the display regions can be the same or different, which is not limited herein.

[0049] In S120, after the display region to be adjusted is determined from the plurality of display regions and the target refresh frequency corresponding to the display region to be adjusted is determined, the first correspondence relationship stored in advance can be obtained, and the correspondence relationship between the target refresh frequency and the frequency difference threshold can be determined according to the first correspondence relationship.

[0050] The first correspondence relationship can be a correspondence relationship between a refresh frequency and a frequency difference threshold obtained when a difference in refresh frequency of different display regions of the display panel is adjusted in a test process of the display panel. As an optional implementation, the first correspondence relationship can be generated in the following manner. Two display regions in the display panel are selected, one of which maintains a fixed refresh frequency, and the other of which continuously adjusts the refresh frequency, and the luminance values of the two display regions are detected respectively. A luminance difference between the two display regions is determined according to the luminance values of the two display regions. When the luminance difference does not reach a level that can be recognized by the human eye, the difference in refresh frequency of the two display regions is continuously increased until the luminance difference between the two display regions reaches a level that can be recognized by the human eye. The maximum difference in refresh frequency of the two display regions at the luminance difference that cannot be recognized by the human eye is taken as the frequency difference threshold. The frequency difference threshold is the frequency difference threshold corresponding to the fixed refresh frequency. By continuously adjusting the fixed refresh frequency and repeating the above test process, a plurality of frequency difference thresholds corresponding to a plurality of refresh frequencies can be obtained, and the first correspondence relationship can be generated.

[0051] Please refer to Figure 2 As an optional embodiment, S120 can include the following steps.

[0052] S210, determining a first refresh frequency according to the target refresh frequency of the display region to be adjusted and the actual refresh frequencies of the other display regions.

[0053] S220, determining a frequency difference threshold corresponding to the first refresh frequency according to the first correspondence relationship.

[0054] In this embodiment, the display panel can determine a first refresh frequency according to the target refresh frequency of the display region to be adjusted and the actual refresh frequencies of the other display regions, and determine a frequency difference threshold corresponding to the first refresh frequency according to the first correspondence relationship. The frequency difference threshold can be used as a limit on the range of refresh frequencies when the refresh frequencies of the display regions are adjusted in this refresh frequency adjustment process. After the refresh frequency is adjusted, the difference between the maximum refresh frequency and the minimum refresh frequency should not exceed the frequency difference threshold.

[0055] In S210, after obtaining the target refresh frequency of the display region to be adjusted, the display panel can also obtain the actual refresh frequencies of the other display regions.

[0056] Since different display areas will have different refresh frequencies at the same brightness level, and the difference in refresh frequency between display areas is related to the difference in luminous brightness, for example, when the refresh frequency of one of the two display areas remains unchanged, and the difference between the refresh frequency of the other display area and the fixed refresh frequency gradually increases, the brightness difference between the two display areas will also gradually increase. If the difference between the refresh frequencies of the two display areas is too large, the brightness difference between the two display areas will increase to a level that can be perceived by the human eye, thereby affecting the display uniformity of the display panel and reducing the actual display effect. Therefore, when adjusting the refresh frequency of the display area to be adjusted, the actual refresh frequency of other display areas also needs to be referred to.

[0057] After determining the target refresh frequency and the actual refresh frequencies of the other display areas, the display panel can determine a first refresh frequency therefrom, which can be one of the target refresh frequency or the actual refresh frequencies.

[0058] In S220, after determining the first refresh frequency, a frequency difference threshold corresponding to the first refresh frequency can be determined from the first correspondence relationship stored in advance.

[0059] It can be understood that, according to the frequency difference threshold, a frequency range with the first refresh frequency as a reference point can be determined, and the refresh frequencies within the frequency range have a difference from the first refresh frequency less than or equal to the frequency difference threshold. When the refresh frequency of a certain display area is the first refresh frequency, and the refresh frequencies of other display areas are within the frequency range, it can be determined that the brightness difference between the display area with the first refresh frequency and the other display areas does not reach a level that can be recognized by the human eye. That is, according to the frequency difference threshold corresponding to the first refresh frequency, a refresh frequency interval of multiple display areas in the display panel can be determined, and when other display areas are within the refresh frequency interval, the difference in refresh frequency between each display area will not produce a brightness difference that can be perceived by the human eye, thereby ensuring the display uniformity during display.

[0060] As an optional embodiment, the first refresh frequency is the maximum refresh frequency or the minimum refresh frequency among the target refresh frequency and the actual refresh frequencies of the other display areas.

[0061] After determining the target refresh frequency and the actual refresh frequencies of the other display areas, the maximum refresh frequency can be determined as the first refresh frequency from the target refresh frequency and the actual refresh frequencies, or the minimum refresh frequency can be determined as the first refresh frequency.

[0062] In an exemplary embodiment, as shown in FIG. 2, the display panel can determine the target refresh frequency of the display area to be adjusted, and the actual refresh frequencies of the other display areas, and then determine the first refresh frequency from the target refresh frequency and the actual refresh frequencies of the other display areas. Figure 3As shown, the display panel can include 3 display regions 01, 02, 03, and in the adjustment process of the refresh frequency, the refresh frequency of the 01 region and the 03 region needs to be adjusted.

[0063] Before adjustment, the refresh frequency of the 3 display regions can be 1 Hz, and after refresh frequency adjustment, the target refresh frequency of the 01 region is 30 Hz, and the target refresh frequency of the 03 region is 120 Hz. Then, the two target refresh frequencies corresponding to the two display regions to be adjusted are determined as 120 Hz and 30 Hz, and the actual refresh frequency corresponding to the display region 02 which does not need to be adjusted is 1 Hz. At this time, the maximum refresh frequency 120 Hz can be taken as the first refresh frequency, or the minimum refresh frequency 1 Hz can be taken as the first refresh frequency.

[0064] In the above embodiment, whether the maximum refresh frequency is selected as the first refresh frequency or the minimum refresh frequency is selected as the first refresh frequency can depend on the numerical symbol of the frequency difference threshold in the first correspondence relationship. For example, in the first correspondence relationship, when the refresh frequency is 120 Hz, the corresponding frequency difference threshold is -90 Hz, and the frequency range with the first refresh frequency as the reference point is 30 Hz-120 Hz. When the refresh frequency of other display regions is within the frequency range, the display region corresponding to the first refresh frequency 120 Hz has a small brightness difference with other display regions and will not be perceived by the human eye. At this time, since the frequency range corresponding to the first refresh frequency is less than the first refresh frequency, when the first refresh frequency is selected, the maximum refresh frequency of the target refresh frequency and the actual refresh frequency can be used.

[0065] Correspondingly, if in the first correspondence relationship, when the refresh frequency is 30 Hz, the corresponding frequency difference threshold is 90 Hz, then the frequency range with the first refresh frequency as the reference point is 30 Hz-120 Hz. When the refresh frequency of other display regions is within the frequency range, the display region corresponding to the first refresh frequency 30 Hz has a small brightness difference with other display regions and will not be perceived by the human eye. At this time, since the frequency range corresponding to the first refresh frequency is greater than the first refresh frequency, when the first refresh frequency is selected, the minimum refresh frequency of the target refresh frequency and the actual refresh frequency can be used.

[0066] In S130, after determining the frequency difference threshold corresponding to the target refresh frequency, the display panel can adjust the actual refresh frequency of the first display region according to the target refresh frequency of the display region to be adjusted.

[0067] After adjusting the actual refresh frequency of the first display region, it is necessary to ensure that the difference between the maximum refresh frequency and the minimum refresh frequency in the plurality of display regions is less than or equal to the frequency difference threshold corresponding to the target refresh frequency.

[0068] The display area to be adjusted can be at least one of a plurality of display areas, and the first display area can also be at least one of the plurality of display areas.

[0069] Taking one of the display areas to be adjusted as an example, after determining the target refresh frequency corresponding to the display area to be adjusted, a frequency difference threshold corresponding to the target refresh frequency can be determined according to the first correspondence relationship. If the difference between the target refresh frequency and the actual refresh frequency of part of the display areas in other display areas is greater than the frequency difference threshold, part of the display areas in the plurality of display areas can be determined as the first display area, and the actual refresh frequency of the first display area can be adjusted, so that after the refresh frequency is switched, the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas is less than the frequency difference threshold.

[0070] In an exemplary embodiment, the display panel can include three display areas 01, 02, and 03. Among the refresh frequencies of the three display areas, the refresh frequency of the 01 area needs to be adjusted. Before adjustment, the refresh frequencies of the three display areas can all be 1 Hz. After refresh frequency adjustment, the target refresh frequency of the 01 area is 120 Hz. According to the refresh frequency adjustment instruction, the display panel can determine that the target refresh frequency of the display area to be adjusted 01 is 120 Hz. According to the first correspondence relationship, the frequency difference threshold corresponding to the target refresh frequency can be determined to be -90 Hz. After refresh frequency adjustment, the actual refresh frequencies of the display area 02 and the display area 03 are both 1 Hz, and the frequency difference between the target refresh frequency of the display area 01, which is 120 Hz, exceeds the frequency difference threshold -90 Hz. At this time, the display area 02 and the display area 03 can be determined as the first display area, and the actual refresh frequency of the first display area can be adjusted. That is, the display panel can adjust the actual refresh frequencies of the display area 02 and the display area 03 to at least 30 Hz, so that after the refresh frequency is switched, the difference between the maximum refresh frequency and the minimum refresh frequency of the three display areas is less than or equal to the frequency difference threshold.

[0071] It can be understood that if the actual refresh frequency of the display area 02 is 30 Hz and the actual refresh frequency of the display area 03 is 1 Hz. After the refresh frequency is switched, the refresh frequency difference between the display area 02 and the display area 01 is not greater than the frequency difference threshold, and the refresh frequency difference between the display area 03 and the display area 01 is greater than the frequency difference threshold. At this time, only the display area 03 can be taken as the first display area, and the actual refresh frequency of the display area 03 can be adjusted to be not less than 30 Hz, so as to satisfy that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas is less than or equal to the frequency difference threshold.

[0072] Please refer to Figure 4 As an optional embodiment, S130 can include:

[0073] S310, in a case where the target refresh frequency of the display region to be adjusted is greater than the actual refresh frequency, adjusting the actual refresh frequency of other display regions so that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions in a single image frame is less than or equal to the frequency difference threshold value;

[0074] S320, in a case where the target refresh frequency of the display region to be adjusted is less than the actual refresh frequency, adjusting the actual refresh frequency of the display region to be adjusted so that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions in a single image frame is less than or equal to the frequency difference threshold value.

[0075] In this embodiment, when the display region to be adjusted is frequency increasing adjustment, if the refresh frequency difference between the adjusted display regions is too large, the display panel can increase the actual refresh frequency of other display regions during the refresh frequency adjustment, so that when the display region to be adjusted is frequency increasing, the refresh frequency of other display regions will not be too small. When the display region to be adjusted is frequency decreasing adjustment, if the refresh frequency difference between the adjusted display regions is too large, the display panel can not directly adjust the display region to be adjusted to the target refresh frequency, but to an actual refresh frequency that can meet the frequency difference threshold value.

[0076] In S310, after determining the target refresh frequency of the display region to be adjusted and the actual refresh frequency of other display regions, if the refresh frequency difference between the display regions after switching is too large, the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions can be satisfied by selecting part of the display regions as the first display region and adjusting the actual refresh frequency of the first display region. The first display region can be the display region to be adjusted in the plurality of display regions, or other display regions in the plurality of display regions that do not need to be adjusted in refresh frequency, or the display region to be adjusted and other display regions are all included in the first display region.

[0077] For example, after the refresh frequency adjustment, the difference between the target refresh frequency of the display region to be adjusted and the actual refresh frequency of other display regions is too large, resulting in a difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions greater than the frequency difference threshold value. The display panel can adjust the actual refresh frequency of the display region to be adjusted to make it closer to the actual refresh frequency of other display regions relative to the target refresh frequency, thereby meeting the requirement of the frequency difference threshold value.

[0078] The display panel can also adjust the actual refresh frequency of other display regions to make the actual refresh frequency of other display regions closer to the target refresh frequency of the display region to be adjusted, to meet the requirement of the frequency difference threshold value.

[0079] The display panel can also simultaneously adjust the actual refresh frequency of the display region to be adjusted and the actual refresh frequencies of other display regions, so that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions is reduced to within the frequency difference threshold.

[0080] The manner in which the display panel determines the first display region can be determined according to the refresh frequency adjustment type of the display region to be adjusted. For example, if the target refresh frequency of the display region to be adjusted is greater than the actual refresh frequency, it indicates that the refresh frequency adjustment type of the display region to be adjusted is frequency up; if the target refresh frequency of the display region to be adjusted is less than the actual refresh frequency, it indicates that the refresh frequency adjustment type of the display region to be adjusted is frequency down.

[0081] In the case where the target refresh frequency of the display region to be adjusted is greater than the actual refresh frequency, the display region to be adjusted is frequency up adjustment, at this time, part of the display regions in the other display regions can be determined as the first display region, and the actual refresh frequency of the first display region is adjusted, so that in a single image frame, the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions is less than or equal to the frequency difference threshold.

[0082] In S320, in the case where the target refresh frequency of the display region to be adjusted is less than the actual refresh frequency, the display region to be adjusted is frequency down adjustment, at this time, the display region to be adjusted can be determined as the first display region, and the actual refresh frequency of the display region to be adjusted is adjusted, so that in a single image frame, the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display regions is less than or equal to the frequency difference threshold.

[0083] It should be noted that in the above embodiment, the display region to be adjusted is switched from 120Hz to 1Hz, and the display region to be adjusted is frequency down adjustment. If the actual refresh frequency of the other display regions is too large after the refresh frequency is switched, the difference between the maximum refresh frequency and the minimum refresh frequency is greater than the frequency difference threshold, at this time, the actual refresh frequency of the display region to be adjusted can be adjusted to a refresh frequency that satisfies the frequency difference threshold. That is, after the refresh frequency adjustment, the display region to be adjusted is not adjusted to 1Hz, but is switched to a refresh frequency value that can satisfy the frequency difference threshold.

[0084] Please refer to Figure 5 , as an optional embodiment, the above S310 can include:

[0085] S410, in the case where the target refresh frequency of the display region to be adjusted is greater than the actual refresh frequency, the second refresh frequency is determined according to the first refresh frequency and the frequency difference threshold;

[0086] S420, adjusting the actual refresh frequency of the other display regions to be no less than the second refresh frequency.

[0087] In the embodiment, when the display area to be adjusted is the frequency increasing adjustment, the second refresh frequency can be calculated according to the first refresh frequency and the frequency difference threshold, and the refresh frequency adjustment can be performed on the display area lower than the second refresh frequency in the other display areas, so that the refresh frequency of any display area is not lower than the second refresh frequency.

[0088] In S410, when the target refresh frequency of the display area to be adjusted is greater than the actual refresh frequency, the display area to be adjusted is the frequency increasing adjustment. The display panel can determine the maximum refresh frequency as the first refresh frequency from the target refresh frequency of the display area to be adjusted and the actual refresh frequencies of the other display areas which do not need to be adjusted.

[0089] After determining the frequency difference threshold corresponding to the first refresh frequency according to the first correspondence relationship, the sum of the first refresh frequency and the frequency difference threshold can be calculated to obtain the second refresh frequency. It can be understood that, since the first refresh frequency is the maximum refresh frequency of each display area after the refresh frequency switching, the numerical symbol of the frequency difference threshold corresponding to the first refresh frequency in the first correspondence relationship is negative. That is, the second refresh frequency should be less than the first refresh frequency.

[0090] In S420, after determining the second refresh frequency, the display panel can match the actual refresh frequencies of the other display areas with the second refresh frequency, and adjust the actual refresh frequencies of the display areas lower than the second refresh frequency to be not lower than the second refresh frequency. For example, when the display panel determines that the second refresh frequency is 30Hz, and the actual refresh frequency of a display area is 1Hz, the actual refresh frequency of the display area can be adjusted to be not lower than 30Hz, so that the frequency difference between the actual refresh frequency of the display area and the first refresh frequency satisfies the frequency difference threshold.

[0091] As an optional embodiment, S420 can include:

[0092] Adjusting the part of the actual refresh frequencies lower than the second refresh frequency in the multiple actual refresh frequencies corresponding to the other display areas to the second refresh frequency.

[0093] In the embodiment, after determining the second refresh frequency, the display panel can match the multiple actual refresh frequencies corresponding to the other display areas with the second refresh frequency respectively, and determine the part of the display areas whose actual refresh frequencies are lower than the second refresh frequency.

[0094] It can be understood that, since the refresh frequencies of the plurality of display areas in the display panel can be adjusted individually, there can be some display areas whose actual refresh frequencies are higher than the second refresh frequency, and some display areas whose actual refresh frequencies are lower than the second refresh frequency. The display panel can perform synchronous adjustment of the refresh frequencies of the display areas whose actual refresh frequencies are lower than the second refresh frequency, so that, after the refresh frequency switching, the refresh frequency of the display area to be adjusted is adjusted to the target refresh frequency, and the refresh frequencies of all other display areas are not lower than the second refresh frequency.

[0095] Please refer to Figure 6 As an optional embodiment, S320 can include:

[0096] S510, in a case where the target refresh frequency of the display area to be adjusted is less than the actual refresh frequency, determining the second refresh frequency according to the first refresh frequency and the frequency difference threshold value;

[0097] S520, adjusting the actual refresh frequency of the display area to be adjusted to be not lower than the second refresh frequency.

[0098] In this embodiment, in a case where the display area to be adjusted is to be adjusted in a frequency reduction manner, the second refresh frequency can be calculated according to the first refresh frequency and the frequency difference threshold value, and in a case where the target refresh frequency of the display area to be adjusted is lower than the second refresh frequency, the refresh frequency of the display area to be adjusted is only reduced to the second refresh frequency, instead of being directly reduced to the target refresh frequency, so as to avoid the influence of the brightness difference caused by directly reducing the refresh frequency of the display area to be adjusted to the target refresh frequency on the visual effect.

[0099] The display areas in the other display areas which are lower than the second refresh frequency are adjusted in the refresh frequency, so that the refresh frequency of any display area is not lower than the second refresh frequency.

[0100] In S510, in a case where the target refresh frequency of the display area to be adjusted is less than the actual refresh frequency, the display area to be adjusted is to be adjusted in a frequency reduction manner. The display panel can determine the maximum refresh frequency as the first refresh frequency from the target refresh frequency of the display area to be adjusted and the actual refresh frequencies of the other display areas which do not need to be adjusted in the refresh frequency.

[0101] After the frequency difference threshold value corresponding to the first refresh frequency is determined according to the first correspondence relationship, the sum of the first refresh frequency and the frequency difference threshold value can be calculated to obtain the second refresh frequency. It can be understood that, since the first refresh frequency is the maximum refresh frequency of each display area after the refresh frequency switching, the numerical symbol of the frequency difference threshold value corresponding to the first refresh frequency in the first correspondence relationship is negative. That is, the second refresh frequency should be less than the first refresh frequency.

[0102] In S520, after determining the second refresh frequency, the display panel can match the target refresh frequency of the display area to be adjusted with the second refresh frequency.

[0103] If the target refresh frequency of the display area to be adjusted is greater than or equal to the second refresh frequency, after the refresh frequency adjustment is completed, the frequency difference between the target refresh frequency and the first refresh frequency will not exceed the frequency difference threshold, and thus the display area to be adjusted can be normally switched in refresh frequency.

[0104] If the target refresh frequency of the display area to be adjusted is less than the second refresh frequency, after the refresh frequency adjustment is completed, the frequency difference between the target refresh frequency and the first refresh frequency will exceed the frequency difference threshold, and thus a relatively obvious brightness difference will be generated between the two display areas and perceived by the user, thereby affecting the display uniformity and visual effect. Therefore, during the refresh frequency switching process, the display panel can not adjust the actual refresh frequency of the display area to be adjusted to the target refresh frequency, but to a refresh frequency not lower than the second refresh frequency.

[0105] In an exemplary embodiment, when the display panel determines that the display area to be adjusted is to be adjusted in a frequency reduction manner, if the second refresh frequency is 30 Hz and the target refresh frequency of the display area to be adjusted is 1 Hz, the brightness difference between the display area to be adjusted and other display areas will be obvious enough to be perceived by the human eye. The display panel can adjust the actual refresh frequency of the display area to be adjusted to a refresh frequency not lower than 30 Hz, so as to improve the problem of obvious brightness difference between different display areas after the refresh frequency adjustment.

[0106] Please continue to refer to Figure 6 As an optional embodiment, after S520, the method can further include:

[0107] S610, in the case that the display area to be adjusted is all the display areas, adjusting the actual refresh frequencies of the display areas to the target refresh frequency.

[0108] In this embodiment, during the frequency adjustment of the display panel, in order to reduce the power consumption of the display panel and achieve the energy-saving effect of image display, the refresh frequencies of the display areas are usually reduced, for example, the refresh frequencies of the display areas are reduced to 1 Hz, so as to reduce the display power consumption of the display panel.

[0109] In the case that the display region to be adjusted is the whole display region, after the display panel determines the second refresh frequency according to the first refresh frequency, the actual refresh frequency of the display region to be adjusted cannot be adjusted to be lower than the second refresh frequency in a single refresh frequency switching process. After the refresh frequency switching, the actual refresh frequency of the display region to be adjusted cannot be adjusted to the target refresh frequency. Therefore, the display panel can perform a second refresh frequency adjustment on each display region, and in the adjustment process, the display panel can adjust the actual refresh frequency of each display region to the target refresh frequency.

[0110] In an exemplary embodiment, the display panel can include three display regions 01, 02, and 03, and the refresh frequencies of the three display regions are 30 Hz, 120 Hz, and 30 Hz, respectively. It is required to reduce the refresh frequencies of the three display regions to 1 Hz, i.e., the target refresh frequency of all display regions is 1 Hz.

[0111] According to the refresh frequency adjustment instruction, the display panel can determine that the first refresh frequency is 120 Hz, and at this time, it can be determined that the frequency difference threshold corresponding to the first refresh frequency is -90 Hz, i.e., the actual refresh frequencies of the multiple display regions to be adjusted cannot be adjusted to be lower than 30 Hz in the first refresh frequency adjustment process. Therefore, the display panel can adjust the refresh frequency of the display region 02 to be not lower than 30 Hz in the first refresh frequency adjustment process.

[0112] After the display panel adjusts the refresh frequency of the display region 02 to 30 Hz, the refresh frequencies of the display regions 01, 02, and 03 are all 30 Hz, and at this time, the actual refresh frequencies of each display region are the same. When the actual refresh frequencies of multiple display regions are the same, the actual refresh frequencies of each display region can be adjusted synchronously. Since the actual refresh frequencies of each display region remain the same before and after the adjustment, the brightness difference between the display regions after the adjustment is small, which cannot be perceived by the human eye of the user, and the uniformity of the display effect can be maintained in the process of the refresh frequency adjustment.

[0113] As an optional embodiment, in the above embodiment, the display region 02 is adjusted to 30 Hz in the first refresh frequency adjustment process, i.e., the refresh frequencies of the display regions 01, 02, and 03 are all 30 Hz. However, when the refresh frequencies of the display regions 01 or 03 are not 30 Hz, or the display panel includes more display regions with inconsistent refresh frequencies, it is still required to adjust the refresh frequencies of each display region to be consistent. That is, in the second refresh frequency adjustment process, the refresh frequencies of each display region are adjusted to the same refresh frequency, and in the third refresh frequency adjustment process, the refresh frequencies of each display region are synchronously adjusted to the target refresh frequency.

[0114] As another optional implementation, in the first refresh frequency adjustment process, after determining the second refresh frequency, the display panel can adjust the refresh frequency of all display areas whose actual refresh frequency is not the second refresh frequency, so that after the first refresh frequency adjustment, the refresh frequency of all display areas is adjusted to the second refresh frequency. For example, the display panel has three display areas 01, 02, and 03, and the refresh frequencies of the three display areas are 30 Hz, 120 Hz, and 60 Hz, respectively, and it is required to reduce the refresh frequencies of the three display areas to 1 Hz. After determining the first refresh frequency 120 Hz and calculating the second refresh frequency 30 Hz according to the frequency difference threshold corresponding to the first refresh frequency -90 Hz, the display panel can adjust the actual refresh frequencies of the display area 02 and the display area 03 to 30 Hz in the first refresh frequency adjustment process, so that after the first adjustment process, the actual refresh frequencies of the three display areas are all the second refresh frequency. In the second refresh frequency adjustment process, the display panel can adjust the actual refresh frequencies of the three display areas to 1 Hz synchronously.

[0115] The embodiment of the present application also provides a frequency difference threshold acquisition method, Figure 7 The flowchart of the frequency difference threshold acquisition method provided by the embodiment of the present application is shown. The frequency difference threshold acquisition method comprises the following steps:

[0116] S710, a refresh frequency comparison instruction is sent to the to-be-tested panel, so that the to-be-tested panel adjusts the frequency difference of the refresh frequencies of two display areas when displaying different image frames; wherein one of the two display areas keeps a fixed refresh frequency;

[0117] S720, the luminance difference under different image frames is determined according to the luminous luminance values corresponding to the two display areas under different image frames; the luminous luminance value is obtained by optical detection of the image frame by an optical detection module;

[0118] S730, the frequency difference threshold corresponding to the fixed refresh frequency is determined according to the maximum frequency difference value of the multiple frequency difference values corresponding to the image frame whose luminance difference is less than the luminous difference threshold;

[0119] S740, a first correspondence relationship is generated according to the multiple fixed refresh frequencies and the frequency difference thresholds corresponding thereto; the first correspondence relationship is used to realize the frequency adjustment method of the display panel in the above embodiment.

[0120] The frequency difference threshold acquisition method provided in the embodiments of the present application can be applied to a frequency difference threshold acquisition device. The device can drive different display regions of a display panel to emit light at different refresh frequencies during production testing of the display panel, and determine a first correspondence relationship according to luminance differences of the different display regions. The specific form of the frequency difference threshold acquisition device is not limited in the embodiments.

[0121] In the embodiments, the display panel under test is driven to display during production testing, so that the two display regions of the display panel under test can obtain image pictures at different frequency differences while keeping one of the refresh frequencies unchanged. According to the luminance values of the two display regions in each image picture, the luminance difference corresponding to each frequency difference threshold can be determined. In the multiple frequency differences with luminance differences less than the light emission difference threshold, the maximum frequency difference can be selected as the frequency difference threshold corresponding to the fixed refresh frequency. According to the multiple fixed refresh frequencies and the corresponding frequency difference thresholds, a first correspondence relationship can be generated and stored in the display panel under test, so as to implement the frequency adjustment method of the display panel in the above embodiments during actual display refresh frequency switching, improve the luminance difference that can be perceived by the human eye during refresh frequency switching, and improve the display effect uniformity of different display regions.

[0122] In S710, the device can determine a certain display panel as a display panel under test, and send a refresh frequency comparison instruction to the display panel under test. The display panel under test can drive two display regions to display images at different refresh frequencies according to the refresh frequency comparison instruction. The images displayed by the two display regions of the display panel under test at different refresh frequencies can be pure white images or other image pictures.

[0123] The display panel under test can adjust the frequency difference of the refresh frequencies of the two display regions, and display image pictures at different frequency differences. Specifically, the display panel under test can keep the refresh frequency of one of the display regions at a fixed refresh frequency, and change the frequency difference of the refresh frequencies of the two display regions by adjusting the refresh frequency of the other display region.

[0124] In S720, the device can drive the display panel under test to display image pictures at different frequency differences, and perform optical detection on the two display regions by an optical detection module to obtain luminance values of the two display regions corresponding to each image picture.

[0125] The refresh frequency of one of the display regions in any two different image frames is a fixed refresh frequency, and the refresh frequencies of the other display regions are different from each other. The device can calculate the difference between the two luminous intensity values according to the luminous intensity values of the two display regions corresponding to each image frame, and obtain the luminance difference of the two display regions. Under a single image frame, the difference between the two luminous intensity values is the luminance difference corresponding to the difference between the two refresh frequencies.

[0126] In S730, after determining the luminance difference corresponding to the difference between the refresh frequencies of each image frame, the device can match the luminance difference of each image frame with the luminous difference threshold.

[0127] If the luminance difference is greater than the luminous difference threshold, it indicates that the luminance difference of the two display regions in the image frame can reach the level of human eye perception. Conversely, if the luminance difference is not greater than the luminous difference threshold, it indicates that the luminance difference of the two display regions in the image frame cannot be perceived by the human eye.

[0128] After matching the luminance difference of each image frame with the luminous difference threshold, the device can screen out part of the image frames whose luminance difference is not greater than the luminous difference threshold.

[0129] After screening out part of the image frames, the device can obtain the frequency difference value corresponding to each image frame in the part of the image frames. The device can determine the maximum frequency difference value in the plurality of frequency difference values as the frequency difference threshold corresponding to the fixed refresh frequency.

[0130] As an optional implementation, the device can drive the refresh frequency of one of the display regions of the display panel to remain at 120Hz, constantly adjust the refresh frequency of the other display region to display image frames with different frequency differences, and capture the luminous intensity values of the two display regions under each image frame through the optical detection module.

[0131] The luminance difference corresponding to each image frame can be the ratio of the difference between the two luminous intensity values to the larger luminous intensity value. After screening out the image frames whose luminance difference is less than the luminous difference threshold from the plurality of image frames, the device can obtain the frequency difference value corresponding to each of the screened image frames.

[0132] If the maximum value of the corresponding frequency difference values in the screened plurality of image frames is -90Hz, it can be determined that the frequency difference threshold corresponding to the fixed refresh frequency of 120Hz is -90Hz.

[0133] In S740, after determining the frequency difference threshold corresponding to a certain fixed refresh frequency, the fixed refresh frequency can be adjusted to the next refresh frequency value, and the above steps are continued to be executed to obtain the frequency difference threshold corresponding to the next refresh frequency value, until the frequency difference thresholds corresponding to a plurality of fixed refresh frequencies are obtained.

[0134] The plurality of fixed refresh frequencies can be refresh frequencies that can be supported by the display panel during image display, for example, can include but are not limited to 1 Hz, 30 Hz, 60 Hz, 90 Hz, 120 Hz, etc.

[0135] After determining the plurality of fixed refresh frequencies and the corresponding frequency difference thresholds, a first correspondence relationship can be generated, and the first correspondence relationship is stored in the to-be-tested panel. The to-be-tested panel can implement the frequency adjustment method of the display panel in the above embodiments according to the stored first correspondence relationship in the actual display process.

[0136] The embodiments of the present application also provide a display panel frequency adjustment device, as shown in Figure 8 The device includes:

[0137] The obtaining module 801 is configured to obtain a target refresh frequency of a display region to be adjusted in response to a refresh frequency adjustment instruction.

[0138] The frequency difference threshold determination module 803 is configured to determine a frequency difference threshold corresponding to the target refresh frequency according to a first correspondence relationship; wherein the first correspondence relationship is a correspondence relationship between a refresh frequency and a frequency difference threshold.

[0139] The adjustment module 803 is configured to adjust an actual refresh frequency of the first display region according to the target refresh frequency, so that a difference between a maximum refresh frequency and a minimum refresh frequency of the plurality of display regions in a single image frame is less than or equal to the frequency difference threshold.

[0140] The embodiments of the present application also provide a frequency difference threshold obtaining device, and the device includes:

[0141] The display driving module is configured to send a refresh frequency comparison instruction to the to-be-tested panel, so that the to-be-tested panel adjusts a frequency difference between the refresh frequencies of the two display regions when displaying different image frames; wherein one of the two display regions maintains a fixed refresh frequency.

[0142] The difference determination module is configured to determine a luminance difference under different image frames according to a plurality of luminous intensity values corresponding to the two display regions under the different image frames; the luminous intensity values are obtained by optical detection of the image frames by the optical detection module.

[0143] The threshold determination module is configured to determine a frequency difference threshold corresponding to a fixed refresh frequency according to a maximum frequency difference value of a plurality of frequency difference values corresponding to the image frames with a luminance difference less than a luminous difference threshold.

[0144] The generating module is configured to generate a first correspondence relationship according to a plurality of fixed refresh frequencies and corresponding frequency difference thresholds; and the first correspondence relationship is used to implement the frequency adjustment method of the display panel in the above embodiments.

[0145] Figure 9 A hardware structure schematic diagram of the frequency adjustment device of the display panel provided by the embodiments of the present application is shown.

[0146] The frequency adjustment device of the display panel can include a processor 901 and a memory 902 storing computer program instructions.

[0147] Specifically, the processor 901 can include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or can be configured to implement one or more integrated circuits of the embodiments of the present application.

[0148] The memory 902 can include a mass storage for data or instructions. By way of example and not limitation, the memory 902 can include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory 902 can include removable or non-removable (or fixed) media. Where appropriate, the memory 902 can be internal or external to the frequency adjustment device of the display panel. In certain embodiments, the memory 902 is a non-volatile solid-state memory.

[0149] In certain embodiments, the memory 902 can include read-only memory (ROM), random access memory (RAM), a disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software that, when executed (e.g., by one or more processors), is operable to perform operations described with reference to the methods according to an aspect of the present disclosure.

[0150] The processor 901 implements any one of the frequency adjustment methods of the display panel in the above embodiments by reading and executing the computer program instructions stored in the memory 902.

[0151] In one example, the frequency adjustment device of the display panel can further include a communication interface 903 and a bus 910. Wherein, as shown in the figure, the bus 910 can be connected to the processor 901, the memory 902, and the communication interface 903. Figure 9As shown, the processor 901, the memory 902, and the communication interface 903 are connected by the bus 910 and complete communication between each other.

[0152] The communication interface 903 is mainly used to realize the communication between the modules, devices, units and / or equipment in the embodiments of the application.

[0153] The bus 910 includes hardware, software or both to couple the components of the frequency adjustment device of the display panel to each other. By way of example, and without limitation, the bus can include an accelerated graphics port (AGP) or other graphics bus, an enhanced industry standard architecture (EISA) bus, a front-side bus (FSB), a hypertransport (HT) interconnect, an industry standard architecture (ISA) bus, an infiniband interconnect, a low pin count (LPC) bus, a memory bus, a microchannel architecture (MCA) bus, a peripheral component interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a serial advanced technology attachment (SATA) bus, a video electronics standards association local (VLB) bus, or another suitable bus or combination of two or more of these. Where suitable, the bus 910 can include one or more buses. Although specific buses are described and shown in the embodiments of the application, the application contemplates any suitable bus or interconnect.

[0154] In addition, in combination with the display panel frequency adjustment method in the above embodiments, the embodiments of the application can provide a computer storage medium to implement. The computer storage medium has computer program instructions stored thereon; the computer program instructions are executed by a processor to implement any one of the display panel frequency adjustment methods in the above embodiments.

[0155] It needs to be clear that the application is not limited to the specific configurations and processes described above and shown in the drawings. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after understanding the spirit of the application.

[0156] The functional blocks shown in the structural block diagrams above can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, functional cards, and the like. When implemented in software, the elements of the present application are program or code segments that are used to perform the required tasks. The program or code segments can be stored in a machine-readable medium, or transmitted through a data signal carried in a carrier wave over a transmission medium or communication link. A "machine-readable medium" includes any medium that can store or transport information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memory, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, and the like. The code segments can be downloaded via computer networks such as the Internet, intranets, and the like.

[0157] It is also important to note that the examples mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the examples, or in an order different from the examples, or several steps can be performed simultaneously.

[0158] The above generally describes aspects of the present disclosure with reference to a flowchart and / or a block diagram of methods, apparatus (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each block of the flowchart and / or block diagram, and combinations of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / acts specified in the flowchart and / or block diagram block or blocks. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special-purpose application processor, or a field programmable logic array (FPLA). It should also be understood that each block of the flowchart and / or block diagram, and combinations of blocks in the flowchart and / or block diagram, can also be implemented by dedicated hardware, or a combination of hardware and computer instructions. The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable data processing apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable data processing apparatus provide steps for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0159] The above is only a specific implementation of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, module and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A frequency adjustment method of a display panel, characterized by, The method is applied to a display panel comprising a plurality of display areas; the method comprises: in response to a refresh frequency adjustment instruction, obtaining a target refresh frequency of a display area to be adjusted; determining a frequency difference threshold corresponding to the target refresh frequency according to a first correspondence relationship; wherein the first correspondence relationship is a correspondence relationship between refresh frequencies and frequency difference thresholds; adjusting an actual refresh frequency of a first display area according to the target refresh frequency, so that a difference between a maximum refresh frequency and a minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold; the display area to be adjusted is at least one of the plurality of display areas, and the first display area is at least one of the plurality of display areas; the adjusting an actual refresh frequency of a first display area according to the target refresh frequency, so that a difference between a maximum refresh frequency and a minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold comprises: in a case where the target refresh frequency of the display area to be adjusted is greater than the actual refresh frequency, adjusting the actual refresh frequencies of other display areas, so that a difference between a maximum refresh frequency and a minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold; in a case where the target refresh frequency of the display area to be adjusted is less than the actual refresh frequency, adjusting the actual refresh frequency of the display area to be adjusted, so that a difference between a maximum refresh frequency and a minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold.

2. The frequency adjustment method of a display panel according to claim 1, wherein the determining a frequency difference threshold corresponding to the target refresh frequency according to a first correspondence relationship comprises: determining a first refresh frequency according to the target refresh frequency and the actual refresh frequencies of other display areas; determining a frequency difference threshold corresponding to the first refresh frequency according to the first correspondence relationship.

3. The frequency adjustment method of a display panel according to claim 2, wherein the first refresh frequency is a maximum refresh frequency or a minimum refresh frequency among the target refresh frequency and the actual refresh frequencies of other display areas.

4. The frequency adjustment method of a display panel according to claim 2, wherein the adjusting the actual refresh frequencies of other display areas in a case where the target refresh frequency of the display area to be adjusted is greater than the actual refresh frequency comprises: in a case where the target refresh frequency of the display area to be adjusted is greater than the actual refresh frequency, determining a second refresh frequency according to the first refresh frequency and the frequency difference threshold; adjusting the actual refresh frequencies of other display areas to be not lower than the second refresh frequency.

5. The frequency adjustment method of a display panel according to claim 4, wherein the adjusting the actual refresh frequencies of other display areas to be not lower than the second refresh frequency comprises: adjusting, from a plurality of actual refresh frequencies corresponding to other display areas respectively, a part of actual refresh frequencies lower than the second refresh frequency to the second refresh frequency.

6. The frequency adjustment method of a display panel according to claim 2, wherein the adjusting the actual refresh frequency of the display area to be adjusted in a case where the target refresh frequency of the display area to be adjusted is less than the actual refresh frequency comprises: in a case where the target refresh frequency of the display area to be adjusted is less than the actual refresh frequency, determining a second refresh frequency according to the first refresh frequency and the frequency difference threshold; adjusting the actual refresh frequency of the display area to be adjusted to be not lower than the second refresh frequency.

7. The frequency adjustment method of a display panel according to claim 6, wherein The method further comprises, after adjusting the actual refresh frequency of the display area to be adjusted to be not lower than the second refresh frequency: In a case where the display area to be adjusted is the whole display area, adjusting the actual refresh frequencies of the plurality of display areas to the target refresh frequency.

8. A frequency difference threshold acquisition method, characterized by, The method comprises: sending a refresh frequency comparison instruction to the panel to be tested, so that the panel to be tested adjusts the frequency difference of the refresh frequencies of the two display areas when displaying different image frames; one of the two display areas remains a fixed refresh frequency; determining the luminance difference under different image frames according to the luminous brightness values corresponding to the two display areas under different image frames; the luminous brightness values are obtained by optical detection of the image frames by an optical detection module; determining the frequency difference threshold corresponding to the fixed refresh frequency according to the maximum frequency difference value of the plurality of frequency difference values corresponding to the image frames whose luminance difference is less than the luminous difference threshold; generating a first corresponding relationship according to the plurality of fixed refresh frequencies and the corresponding frequency difference thresholds; the first corresponding relationship is used to implement the frequency adjustment method of the display panel according to any one of claims 1-7.

9. A frequency adjustment device of a display panel, characterized by comprising: The device comprises: an acquisition module configured to acquire a target refresh frequency of a display area to be adjusted in response to a refresh frequency adjustment instruction; a frequency difference threshold determination module configured to determine a frequency difference threshold corresponding to the target refresh frequency according to a first corresponding relationship; the first corresponding relationship is a corresponding relationship between refresh frequencies and frequency difference thresholds; an adjustment module configured to adjust the actual refresh frequency of a first display area according to the target refresh frequency, so that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold; the adjustment module is specifically configured to, in a case where the target refresh frequency of the display area to be adjusted is greater than the actual refresh frequency, adjust the actual refresh frequencies of other display areas, so that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold; and in a case where the target refresh frequency of the display area to be adjusted is less than the actual refresh frequency, adjust the actual refresh frequency of the display area to be adjusted, so that the difference between the maximum refresh frequency and the minimum refresh frequency of the plurality of display areas in a single image frame is less than or equal to the frequency difference threshold.

10. A frequency adjustment device of a display panel, characterized by, The frequency adjustment device of the display panel comprises a processor and a memory storing computer program instructions; the processor executes the computer program instructions to implement the frequency adjustment method of the display panel according to any one of claims 1-7.

11. A computer storage medium, characterized in that The computer storage medium stores computer program instructions, and the computer program instructions are executed by a processor to implement the frequency adjustment method of the display panel according to any one of claims 1-7.

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