Method and device for improving splash screen during refresh rate switching and display device

Abstract

The embodiment of the invention provides a method and device for improving splash screen during refresh rate switching and a display device. The method for improving the splash screen during refresh rate switching comprises the following steps: acquiring a plurality of invalid region durations corresponding to a plurality of refresh rates; obtaining an inactive area starting moment of a current frame of the display panel; determining a plurality of target inactive area moments according to the inactive area starting moment and the plurality of inactive area durations; and acquiring and writing corresponding target gamma voltage at the multiple target inactive area moments. According to the embodiment of the invention, a plurality of target inactive region moments are determined according to the inactive region starting moment of the current frame of the display panel and the inactive region duration corresponding to a plurality of refresh rates, and the corresponding target gamma voltage is acquired and written at the plurality of target inactive region moments, so that the brightness in the switching process of different refresh rates is basically consistent; the problem of flicker caused by switching of different refresh rates can be improved, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a method, device and display device for improving refresh rate switching screen flashing. Background Art

[0002] Nowadays, more and more people are interested in games, and many people have joined the e-sports industry, which has promoted the development of various large-scale games. With the development of large-scale games, users' display requirements for display screens have also increased. TV SOC (TV system integrated circuit) developers and panel manufacturers have increased the display frequency of e-sports display screens, and basically support a refresh rate of 165Hz. However, when the refresh rate is increased, other problems also exist, such as: screen freeze, tearing, tailing, and screen flicker.

[0003] Screen flicker is caused by different brightness of the display panel due to switching between different refresh rates. Figure 1 When the display panel dynamically switches between different refresh rates, for example, from 60Hz to 165Hz, the active area (VActive) time of the two different refresh rates is the same. Since the duration of each frame (Vtotal) of different refresh rates is different, the corresponding invalid area (Blanking) duration is different. The longer the invalid area duration, the more serious the pixel leakage of the display panel, making the average brightness value of the display panel lower, which leads to different brightness of the display panel at different refresh rates, causing the screen to flicker when the refresh rate is switched. This problem brings a poor experience to users. Summary of the invention

[0004] Therefore, in order to overcome at least some of the defects and shortcomings in the prior art, embodiments of the present invention provide a method for improving refresh rate switching screen flashing, a device for improving refresh rate switching screen flashing, and a display device.

[0005] Specifically, on the one hand, the method for improving the refresh rate switching flash screen provided by an embodiment of the present invention includes: obtaining multiple invalid area durations corresponding to multiple refresh rates; obtaining the invalid area start time of the current frame of the display panel; determining multiple target invalid area times according to the invalid area start time and the multiple invalid area durations; and obtaining and writing corresponding target gamma voltages at the multiple target invalid area times.

[0006] In a specific embodiment of the present invention, acquiring and writing corresponding target gamma voltages at multiple target invalid area moments specifically includes: acquiring and writing corresponding target gamma voltages at multiple target invalid area moments within the invalid area period of the current frame; and when the end moment of the invalid area of ​​the current frame is detected, using the target gamma voltage written for the last time as the gamma voltage of the next frame display stage of the display panel.

[0007] In a specific embodiment of the present invention, the step of acquiring and writing the corresponding target gamma voltage in the multiple target invalid areas specifically includes: reading the initial gamma voltage as a reference target gamma voltage; presetting multiple gamma compensation values ​​corresponding to the multiple refresh rates; and obtaining the multiple target gamma voltages according to the reference target gamma voltage and the multiple gamma compensation values.

[0008] In a specific embodiment of the present invention, each group of gamma voltages includes 7 groups of voltage codes, and the target gamma voltage includes 3 groups of voltage codes in each group of gamma voltages.

[0009] In a specific embodiment of the present invention, the 7 groups of voltage codes are 1-14 bit voltage codes, and the 3 groups of voltage codes are 3-5 bit voltage codes and 10-12 bit voltage codes among the 1-14 bit voltage codes.

[0010] In a specific embodiment of the present invention, the method for improving refresh rate switching screen splash further includes: detecting whether the refresh rate switching function is turned off; and when it is detected that the refresh rate switching function is turned off, writing the initial gamma voltage.

[0011] On the other hand, an embodiment of the present invention also provides a device for improving the refresh rate switching flash screen, including: a first acquisition module, used to obtain multiple invalid area durations corresponding to multiple refresh rates; a second acquisition module, used to obtain the invalid area start time of the current frame of the display panel; a determination module, used to determine multiple target invalid area times according to the invalid area start time and the multiple invalid area durations; and a voltage writing module, used to obtain and write corresponding target gamma voltages at the multiple target invalid area times.

[0012] In a specific embodiment of the present invention, the voltage writing module includes: a voltage writing unit, which is used to obtain and write corresponding target gamma voltages at multiple target invalid area moments within the invalid area period of the current frame; and a voltage correction unit, which is used to use the target gamma voltage written for the last time as the gamma voltage of the next frame display stage of the display panel when the end moment of the invalid area of ​​the current frame is detected.

[0013] In a specific embodiment of the present invention, the device for improving the refresh rate switching flash screen also includes: a detection module for detecting whether the refresh rate switching function is turned off; and an initial voltage writing module for writing the initial gamma voltage when it is detected that the refresh rate switching function is turned off.

[0014] On the other hand, an embodiment of the present invention further provides a display device, including: a display panel and the device for improving refresh rate switching and flashing screen as described above, connected to the display panel.

[0015] As can be seen from the above, the embodiment of the present invention determines multiple target invalid area moments according to the invalid area start time of the current frame of the display panel and the invalid area duration corresponding to multiple refresh rates, and obtains and writes the corresponding target gamma voltage at multiple target invalid area moments, so that the brightness during the switching process of different refresh rates is basically consistent, which can improve the flickering problem caused by switching different refresh rates and improve the user experience. Secondly, by reading the initial gamma voltage as the reference gamma voltage, and obtaining the target gamma voltage according to the reference gamma voltage and the gamma compensation value corresponding to multiple refresh rates, this method is applicable to different display panels, with strong adaptability and high versatility. In addition, by setting the target gamma voltage to 3 of the 7 voltage codes, the stability of the picture can be improved, and the writing time can be saved, which can improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 Schematic diagram of dynamic switching of different refresh rates.

[0018] Figure 2 A flowchart of a method for improving refresh rate switching screen flashing provided by the first embodiment of the present invention.

[0019] Figure 3 for Figure 2 Schematic diagram of the process of step S40.

[0020] Figure 4 for Figure 2 Partial flow chart of step S40 in FIG.

[0021] Figure 5 A partial flow chart of a method for improving refresh rate switching screen flashing provided in the first embodiment of the present invention.

[0022] Figure 6 A schematic structural diagram of a display device provided in the first embodiment of the present invention.

[0023] Figure 7 Schematic diagram of writing target gamma voltages into invalid areas at different refresh rates.

[0024] Figure 8 Schematic diagram of the comparison between different refresh rates of the blank area and the time of writing the target gamma voltage.

[0025] Fig. 9A comparison chart of the brightness effect of the display panel before and after using the method of improving the refresh rate switching flash screen.

[0026] Fig.10 A schematic diagram of a module of a device for improving refresh rate switching screen flashing provided by a second embodiment of the present invention.

[0027] Fig.11 for Fig.10 Module schematic for the medium voltage write module.

[0028] Fig.12 A schematic diagram of a module of another device for improving refresh rate switching screen flashing provided by the second embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments described in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, top, and bottom) in the embodiments of the present invention are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the term "vertical" involved in the embodiments of the invention and the claims means that the angle between the two elements is 90° or there is a deviation of -5° to +5°, and the term "parallel" involved means that the angle between the two elements is 0° or there is a deviation of -5° to +5°.

[0031] In the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] [First embodiment]

[0033] See also Figure 2 A method for improving the screen flash caused by switching refresh rates provided by a first embodiment of the present invention comprises the following steps:

[0034] S10, obtaining multiple invalid area durations corresponding to multiple refresh rates;

[0035] S20, obtaining the start time of the invalid area of ​​the current frame of the display panel;

[0036] S30, determining a plurality of target invalid area times according to the invalid area start time and a plurality of invalid area durations; and

[0037] S40, acquiring and writing corresponding target gamma voltages at the same time in the plurality of target invalid areas.

[0038] See also Figure 3 The step S40 of acquiring and writing corresponding target gamma voltages at the time instants of the plurality of target invalid areas specifically includes:

[0039] S41, acquiring and writing corresponding target gamma voltages at a plurality of target invalid area moments within the invalid area period of the current frame; and

[0040] S42, when the end time of the invalid area of ​​the current frame is detected, the target gamma voltage written last time is used as the gamma voltage of the display panel in the next frame display stage.

[0041] See also Figure 4 In step S40, the step of acquiring and writing corresponding target gamma voltages at the same time in the plurality of target invalid areas, and acquiring the target gamma voltages specifically includes:

[0042] S43, reading the initial gamma voltage as a reference target gamma voltage;

[0043] S44, presetting a plurality of gamma compensation values ​​corresponding to the plurality of refresh rates;

[0044] S45 , obtaining a plurality of target gamma voltages according to the reference target gamma voltage and the plurality of gamma compensation values.

[0045] Each group of gamma voltages includes 7 groups of voltage codes, and the target gamma voltage includes 3 groups of voltage codes in each group of gamma voltages. Further, the 7 groups of voltage codes are 1-14 bit voltage codes, and the 3 groups of voltage codes are 3-5 bit voltage codes and 10-12 bit voltage codes in the 1-14 bit voltage codes.

[0046] See also Figure 5 , the method for improving the refresh rate switching screen splash further includes:

[0047] S50, detecting whether the refresh rate switching function is turned off; and

[0048] S60, when it is detected that the refresh rate switching function is turned off, writing the initial gamma voltage.

[0049] See also Figure 6The method for improving the refresh rate switching screen flashing provided in this embodiment can be applied to a display device 10, for example, and the display device 10 can include a display panel 200 and an apparatus 100 for improving the refresh rate switching screen flashing connected to the display panel 200. In order to facilitate a clearer understanding of this embodiment, the following is combined with Figure 6 , Figure 7 and Figure 8 The method for improving the refresh rate switching screen flashing of this embodiment is described in detail.

[0050] The display panel 200 may have a refresh rate switching function, which means that the refresh rate of the display panel 200 can be switched. The display panel 200 is used to display pictures, and the time from the start of displaying the current frame to the start of displaying the next frame is a frame duration, and each frame duration includes a display phase (also called an effective area) and an invalid area.

[0051] Specifically, for example, a plurality of refresh rates and a plurality of invalid area durations corresponding to the plurality of refresh rates may be stored in advance on the device 100 for improving the refresh rate switching flash screen. The plurality of refresh rates may include, for example, 165Hz, 108Hz, 98Hz, 88Hz, 78Hz, 68Hz, 58Hz and 48Hz, and each refresh rate corresponds to a different invalid area duration. After power-on, for example, it is possible to detect whether the refresh rate switching function is enabled. When it is determined that the refresh rate switching function is enabled, the invalid area start time of the current frame of the display panel is obtained, and the plurality of target invalid area times corresponding to the plurality of refresh rates are determined according to the invalid area start time of the current frame and the plurality of invalid area durations, and the corresponding target gamma voltages are obtained and written at the plurality of target invalid area times.

[0052] See also Figure 7 , for example, the invalid area start time of the current frame of the timing signal DE can be cyclically determined, and multiple target invalid area times can be determined according to the invalid area start time and the invalid area durations corresponding to multiple refresh rates. For example, multiple refresh rates can include 165Hz, 108Hz, 98Hz, 88Hz, 78Hz, 68Hz, 58Hz and 48Hz, and 8 refresh rates correspond to 8 different invalid area durations. Of course, the specific number and value of the refresh rate can be set according to actual needs, and this embodiment is not limited to this. Specifically, for example, each register specific data N*100us can be used as the time interval from the previous target invalid area moment to this target invalid area moment, that is, the invalid area duration. If it is set to 0, the target invalid area moment is canceled. Of course, this is only an example, and this embodiment is not limited to this.

[0053] Figure 7The refresh rate of the current frame shown can be, for example, 48 Hz, and the start time of the invalid area of ​​the current frame plus the invalid area duration of 165 Hz is the first target invalid area moment time1, that is, the first target invalid area moment corresponds to a refresh rate of 165 Hz; the start time of the invalid area of ​​the current frame plus the invalid area duration of 108 Hz is the second target invalid area moment time2, that is, the second target invalid area moment corresponds to a refresh rate of 108 Hz; the start time of the invalid area of ​​the current frame plus the invalid area duration of 98 Hz is the third target invalid area moment time3, that is, the third target invalid area moment corresponds to a refresh rate of 98 Hz; according to the above method, the fourth target invalid area moment time4 corresponding to the refresh rate of 88 Hz, the fifth target invalid area moment time5 corresponding to the refresh rate of 78 Hz, the sixth target invalid area moment time6 corresponding to the refresh rate of 68 Hz, the seventh target invalid time time7 corresponding to the refresh rate of 58 Hz and the eighth target invalid time time8 corresponding to 48 Hz are obtained.

[0054] The corresponding target gamma voltages are obtained and written at multiple target invalid area moments within the invalid area period of the current frame. When the end moment of the invalid area of ​​the current frame is detected, the monitoring of the next target invalid area moment can be ended, and the writing of the corresponding target gamma voltage can be stopped, and the target gamma voltage written for the last time can be used as the gamma voltage of the next frame display stage of the display panel. In this way, the brightness of multiple frames with different refresh rates can be increased to the same brightness to improve the flickering problem when switching between different refresh rates. For example, when the refresh rate of the current frame is 108Hz, there are only target invalid area moments corresponding to 165Hz and 108Hz in the invalid area period, that is, the corresponding first group of target gamma voltages are written at the first target invalid area moment time1, and the corresponding second group of target gamma voltages are written at the second target invalid moment time2, and the written second group of target gamma voltages are used as the gamma voltage of the display stage of the next frame. In this way, the brightness of multiple frames can be increased to the same brightness value to improve the flickering problem when switching between different refresh rates. See. Fig. 9 The refresh rate switching function is set to switch between 165Hz and 48Hz, and the brightness of the display panel is measured. It can be clearly seen that compared with the method for improving the refresh rate switching screen flashing without using this embodiment, the brightness flicker of the display panel is significantly reduced after using the method for improving the refresh rate switching screen flashing of this embodiment.

[0055] See also Figure 8Each target invalid moment corresponds to a target gamma voltage that needs to be written, and multiple gamma compensation values ​​corresponding to multiple refresh rates may be pre-set, for example. When the corresponding target gamma voltage needs to be written at the target invalid moment, the initial gamma voltage may be read as a reference target gamma voltage, or the initial gamma voltage may be used as a first group of target gamma voltages, and then the target gamma voltage corresponding to the current target invalid moment is obtained according to the reference target gamma voltage and the gamma compensation value corresponding to the current target invalid moment. By reading the initial gamma voltage as the reference gamma voltage and obtaining the target gamma voltage according to the reference gamma voltage and the gamma compensation values ​​corresponding to multiple refresh rates, this method is applicable to different display panels, has strong adaptability, and is highly versatile.

[0056] In a specific implementation of this embodiment, each group of gamma voltages may include, for example, 7 groups of voltage codes, which may be, for example, 1 to 14-bit voltage codes, and the target gamma voltage may be written into 3 groups of voltage codes, which may be, for example, 3 to 5-bit voltage codes and 10 to 12-bit voltage codes. In this way, the image stability may be improved, the writing time may be saved, and the processing efficiency may be improved. For example, the initial gamma voltage stored in the device 100 for improving the refresh rate switching flash screen may be Gamma3~Gamma5 and Gamma10~Gamma12, and Gamma3~Gamma5 and Gamma10~Gamma12 are used as the first group of target gamma voltages. The first group of target gamma voltages may, for example, correspond to a refresh rate of 165Hz; the gamma compensation value corresponding to the 108Hz refresh rate is N2offset, and accordingly, the second group of target gamma voltages corresponding to the 108Hz refresh rate obtained according to the benchmark target gamma voltage and the corresponding gamma compensation value are "Gamma3+N2offset3~Gamma5+N2offset5 and Gamma10+N2offset10~Gamma12+N2offset12". The target gamma voltages corresponding to other refresh rates can be obtained through the above method, which will not be elaborated here one by one.

[0057] In a specific implementation of this embodiment, the device 100 for improving refresh rate switching screen flash can also, for example, detect whether the refresh rate switching function is turned off. When it is detected that the refresh rate switching function is turned off, the initial gamma voltage is written to restore the display panel to the initial setting.

[0058] In summary, the embodiment of the present invention determines multiple target invalid area moments according to the invalid area start time of the current frame of the display panel and the invalid area duration corresponding to multiple refresh rates, and obtains and writes the corresponding target gamma voltage at multiple target invalid area moments, so that the brightness during the switching process of different refresh rates is basically consistent, which can improve the flickering problem caused by switching different refresh rates and improve the user experience. Secondly, by reading the initial gamma voltage as the reference gamma voltage, and obtaining the target gamma voltage according to the reference gamma voltage and the gamma compensation value corresponding to multiple refresh rates, this method is applicable to different display panels, with strong adaptability and high versatility. In addition, by setting the target gamma voltage to 3 of the 7 voltage codes, the stability of the picture can be improved, and the writing time can be saved, which can improve the processing efficiency.

[0059] [Second embodiment]

[0060] See also Fig.10 The second embodiment of the present invention provides a device 100 for improving refresh rate switching flash screen. The device 100 for improving refresh rate switching flash screen may include, for example, a first acquisition module 110, a second acquisition module 120, a determination module 130 and a voltage writing module 140.

[0061] A first acquisition module 110 is used to acquire multiple invalid area durations corresponding to multiple refresh rates;

[0062] The second acquisition module 120 is used to acquire the start time of the invalid area of ​​the current frame of the display panel;

[0063] A determination module 130, configured to determine a plurality of target invalid area times according to the invalid area start time and a plurality of invalid area durations; and

[0064] The voltage writing module 140 is used to obtain and write corresponding target gamma voltages at a plurality of target invalid areas at a time.

[0065] See also Fig.11 , the voltage writing module 140 may include, for example:

[0066] A voltage writing unit 141 is used to obtain and write corresponding target gamma voltages at multiple target invalid area moments within the invalid area period of the current frame; and

[0067] The voltage correction unit 142 is used to use the target gamma voltage written last time as the gamma voltage of the next frame display stage of the display panel when detecting the end time of the invalid area of ​​the current frame.

[0068] Among them, obtaining and writing the corresponding target gamma voltage in the multiple target invalid areas at the moment, obtaining the target gamma voltage specifically includes: reading the initial gamma voltage as the reference target gamma voltage; presetting multiple gamma compensation values ​​corresponding to the multiple refresh rates; and obtaining the multiple target gamma voltages according to the reference target gamma voltage and the multiple gamma compensation values.

[0069] In a specific implementation of this embodiment, each group of gamma voltages includes 7 groups of voltage codes, and the target gamma voltage includes 3 groups of voltage codes in each group of gamma voltages.

[0070] In a specific implementation of this embodiment, the 7 groups of voltage codes are 1-14 bit voltage codes, and the 3 groups of voltage codes are 3-5 bit voltage codes and 10-12 bit voltage codes among the 1-14 bit voltage codes.

[0071] See also Fig.12 The device 100 for improving refresh rate switching flash screen may also include, for example: a detection module 160 and an initial voltage writing module 170.

[0072] A detection module 160, used to detect whether the refresh rate switching function is turned off; and

[0073] The initial voltage writing module 170 is used to write the initial gamma voltage when it is detected that the refresh rate switching function is turned off.

[0074] For the specific working process and technical effects of the modules in the device 100 for improving the refresh rate switching splash screen in this embodiment, please refer to the description of the first embodiment mentioned above.

[0075] In addition, it can be understood that the aforementioned embodiments are only exemplary descriptions of the present invention. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the present invention is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method to improve the screen flashing when switching refresh rate. It is characterized in that include: Get multiple invalid zone durations corresponding to multiple refresh rates; Get the start time of the invalid area of ​​the current frame of the display panel; Determine multiple target invalid area times according to the invalid area start time and multiple invalid area durations; as well as The corresponding target gamma voltages are acquired and written at the same time in the plurality of target invalid areas.

2. The method for improving the screen flashing caused by switching refresh rates as claimed in claim 1, It is characterized in that The acquiring and writing corresponding target gamma voltages at the time instants of the plurality of target invalid areas specifically includes: Acquire and write corresponding target gamma voltages at multiple target invalid area moments within the invalid area period of the current frame; and When the end time of the invalid area of ​​the current frame is detected, the target gamma voltage written last time is used as the gamma voltage of the display panel in the next frame display stage.

3. The method for improving the refresh rate switching screen flashing as claimed in claim 1, It is characterized in that The step of acquiring and writing corresponding target gamma voltages into the target invalid areas at the same time, wherein the step of acquiring the target gamma voltages specifically includes: reading an initial gamma voltage as a reference target gamma voltage; Presetting a plurality of gamma compensation values ​​corresponding to the plurality of refresh rates; A plurality of the target gamma voltages are obtained according to the reference target gamma voltage and the plurality of gamma compensation values.

4. The method for improving the screen flashing caused by switching refresh rates as claimed in claim 1, It is characterized in that Each group of gamma voltages includes 7 groups of voltage codes, and the target gamma voltage includes 3 groups of voltage codes in each group of gamma voltages.

5. The method for improving the refresh rate switching screen flashing as claimed in claim 4, It is characterized in that The 7 groups of voltage codes are 1-14 bit voltage codes, and the 3 groups of voltage codes are 3-5 bit voltage codes and 10-12 bit voltage codes among the 1-14 bit voltage codes.

6. The method for improving the screen flashing caused by switching refresh rates as claimed in claim 1, It is characterized in that Also includes: Check whether the refresh rate switching function is turned off; as well as When the refresh rate switching function is detected to be off, the initial gamma voltage is written.

7. A device for improving the screen flashing caused by switching refresh rates. It is characterized in that include: A first acquisition module is used to acquire multiple invalid area durations corresponding to multiple refresh rates; A second acquisition module is used to acquire the start time of the invalid area of ​​the current frame of the display panel; a determination module, configured to determine a plurality of target invalid area times according to the invalid area start time and a plurality of invalid area durations; and The voltage writing module is used to obtain and write corresponding target gamma voltages at a plurality of target invalid areas at a time.

8. The device for improving the screen flashing caused by switching refresh rate as claimed in claim 7, It is characterized in that The voltage writing module comprises: a voltage writing unit, configured to acquire and write corresponding target gamma voltages at a plurality of target invalid area moments within an invalid area period of the current frame; and The voltage correction unit is used to use the target gamma voltage written last time as the gamma voltage of the next frame display stage of the display panel when detecting the end time of the invalid area of ​​the current frame.

9. The device for improving the screen flashing caused by switching refresh rate as claimed in claim 7, It is characterized in that Also includes: A detection module is used to detect whether the refresh rate switching function is turned off; as well as The initial voltage writing module is used to write the initial gamma voltage when it is detected that the refresh rate switching function is turned off.

10. A display device, It is characterized in that include: A display panel and a device for improving refresh rate switching screen flashing as described in any one of claims 7 to 9 connected to the display panel.

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