A display device and a method for driving the display device

Abstract

The present application provides a display device and a method for driving the display device, wherein the display device includes a display panel, a data driver, a scan driver, and an image controller, wherein the display panel is divided into a first display area, a second display area, and a third display area, wherein each display area includes a plurality of pixel units connected to a plurality of data lines and a plurality of scan lines, wherein the data driver is used to drive the plurality of data lines, the scan driver is used to drive the plurality of scan lines, and the image controller is used to control the data driver and the scan driver, and when the operation mode is a multi-frequency mode, the first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency. The display panel can be driven at multiple frequencies, and the refresh rate can be reasonably set according to the display requirements of different display areas of the display panel. Under the premise of meeting the display requirements, the high-frequency driving of the static picture area can be reduced as much as possible to reduce the power consumption of the display panel.

Description

Technical Field

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

[0002] With the continuous development of display technology, the refresh frequency of display panels in display devices such as smart phones and tablets has also become richer, for example, refresh frequencies such as 60HZ and 120HZ can be achieved. However, in the prior art, the refresh frequency of display panels is relatively fixed, with only one frequency, which results in high power consumption of the display panel when the display screen is static when the display panel is driven with a high refresh rate. Summary of the invention

[0003] In view of this, the purpose of this application is to provide a display device and a method for driving the display device, which reasonably sets the refresh rate according to the display requirements of different display areas of the display panel, and reduces the high-frequency driving of the static picture area as much as possible while meeting the display requirements, thereby reducing the power consumption of the display panel. The specific scheme is as follows:

[0004] In a first aspect, the present application provides a display device, comprising:

[0005] A display panel, the display panel comprising a first display area, a second display area and a third display area, each of the first display area, the second display area and the third display area comprising a plurality of pixel units connected to a plurality of data lines and a plurality of scan lines;

[0006] A data driver, used for driving the plurality of data lines;

[0007] A scan driver, used for driving the plurality of scan lines;

[0008] The image controller is used to control the data driver and the scan driver. When the operation mode is a multi-frequency mode, the first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency.

[0009] In a second aspect, an embodiment of the present application further provides a method for driving a display device, the method comprising:

[0010] When the operation mode is the multi-frequency mode, the display panel is divided into a first display area, a second display area and a third display area;

[0011] The first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency.

[0012] The embodiment of the present application provides a display device and a method for driving the display device, wherein the display device includes a display panel, a data driver, a scan driver and an image controller, wherein the display panel is divided into a first display area, a second display area and a third display area, wherein each of the first display area, the second display area and the third display area includes a plurality of pixel units connected to a plurality of data lines and a plurality of scan lines, wherein the data driver is used to drive the plurality of data lines, the scan driver is used to drive the plurality of scan lines, and the image controller is used to control the data driver and the scan driver, and when the operation mode is a multi-frequency mode, the first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency. In this way, multiple refresh rates can be realized in at least three display areas of the display panel, and the display panel can be driven at multiple frequencies. According to the display requirements of different display areas of the display panel, the refresh rate can be reasonably set, and the high-frequency driving of the static picture area can be reduced as much as possible under the premise of meeting the display requirements, thereby reducing the power consumption of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of a display device provided by an embodiment of the present application is shown;

[0015] Figure 2 A schematic diagram of the structure of a display device provided in an embodiment of the present application is shown;

[0016] Figure 3 A schematic diagram of a display panel provided in an embodiment of the present application is shown;

[0017] Figure 4 A partial structural schematic diagram of a display panel provided in an embodiment of the present application is shown;

[0018] Figure 5 A schematic diagram of a scanning signal in a multi-frequency mode provided in an embodiment of the present application is shown;

[0019] Figure 6 An equivalent circuit diagram of a pixel unit provided in an embodiment of the present application is shown;

[0020] Figure 7 A schematic diagram of the structure of an image controller provided by an embodiment of the present application is shown;

[0021] Figure 8 A schematic flow chart of a method for driving a display device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0024] Secondly, the present application is described in detail with reference to the schematic diagram. When describing the embodiments of the present application in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present application. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] For ease of understanding, a display device and a method for driving a display device provided in an embodiment of the present application are described in detail below with reference to the accompanying drawings.

[0026] refer to Figure 1 As shown, it is a schematic diagram of a display device provided in an embodiment of the present application, the display device includes a display panel, the display device has a display area AA and a non-display area NA, the non-display area NA is arranged to surround the display area AA, the display area AA is used to set pixel units to display images, and the non-display area NA is used to set wiring.

[0027] In the embodiment of the present application, the display area of ​​the display panel can be divided into a first display area AA1, a second display area AA2 and a third display area AA3 according to the type of the displayed image. Figure 1 Different display areas are distinguished by dotted lines. For example, the first display area AA1 can display a still image or an image that changes infrequently, the second display area AA2 can display a moving image, and the third display area AA3 can display an image that changes infrequently. The specific range and relative position of the display area are not specifically limited here.

[0028] refer to Figure 2As shown, it is a structural schematic diagram of a display device provided in an embodiment of the present application. The display device includes an image controller, a data driver, a display panel DP and a scan driver SD. Each display area of ​​the display panel may include a plurality of pixel units PX connected to a plurality of data lines and a plurality of scan lines. The plurality of data lines may be recorded as DL1…DLm, and the plurality of scan lines may be recorded as GIL1…GILn, GCL1…GCLn, GWL1…GWLn+1. For example, each pixel unit may be connected to one data line and four scan lines.

[0029] The image controller is used to control a data driver and a scan driver SD. The data driver is used to drive a plurality of data lines DL1 ... DLm. The scan driver is used to drive a plurality of scan lines GIL1 ... GILn, GCL1 ... GCLn, GWL1 ... GWLn+1.

[0030] In an embodiment of the present application, the refresh frequency of the display device can be controlled according to different operating modes. The operating modes may include a normal mode and a multi-frequency mode. In the normal mode, the display device can drive the first display area, the second display area, and the third display area to display at a normal frequency. The three display areas are driven at the same frequency, for example, all 120HZ.

[0031] In multi-frequency mode, the first display area can be driven with a first frequency, the second display area can be driven with a second frequency, and the third display area can be driven with a third frequency. At least two of the first frequency, the second frequency and the third frequency are not equal. Multiple refresh rates can be achieved in at least three display areas of the display panel. The display panel can be driven with multiple frequencies. The refresh rate can be reasonably set according to the display requirements of different display areas of the display panel. On the premise of meeting the display requirements, the high-frequency driving of the static picture area is reduced as much as possible to reduce the power consumption of the display panel.

[0032] In a possible implementation, the first display area AA1 may be located above the second display area AA2 and the third display area AA3. Figure 1 As shown, specifically, the first display area AA1 can be a status bar located at the top of the display panel for displaying information such as time and power, or it can be an area for displaying message reminders. The first frequency can be set to be lower than the second frequency and the third frequency. In this way, for the first display area where the image changes infrequently, the lowest refresh frequency can be set to avoid high-frequency driving of the static picture area, thereby reducing the power consumption of the first display area as much as possible without affecting the display effect of the first display area. For example, the first frequency can be 30HZ, and the second frequency and the third frequency are both greater than 30HZ.

[0033] In another possible implementation, when the first display area is located at the top of the display panel, a moving image is displayed in the second display area, and a still image is displayed in the third display area, the second frequency can be set to be greater than the third frequency. For example, the second display area can be a display area for a video or a chat box, and the third display area can be a text area, a still image area, or the location of a floating keyboard. The second frequency can be set to 120 Hz, and the third frequency can be set to 60 Hz or 40 Hz.

[0034] It is understandable that the display area of ​​the display panel can be divided into a plurality of display areas. Figure 3 As shown, it is a schematic diagram of a display panel provided in an embodiment of the present application, which can be divided into 6 display areas. STV0 to STV4 are frame start signals, which are valid when the input is high level, so that different display areas are driven by different driving frequencies, and the driving frequencies of the 6 display areas are 30HZ, 60HZ, 120HZ, 60HZ, 120HZ and 60HZ respectively.

[0035] In an embodiment of the present application, when the operation mode is a multi-frequency mode, still images and moving images can be displayed simultaneously in the second display area. When it is determined that the duration of the still image reaches a predetermined time, the image controller can change the operation mode to a normal mode to improve the display quality of the display panel and avoid jerky image display.

[0036] Specifically, the image controller 100 can receive the image signal IDAT and the control signal CTRL, and convert the data format of the image signal IDAT so that the image signal IDAT is compatible with the specification of the interface of the data driver 200 to generate the image data signal DATA. The image controller 100 can also output the scanning control signal SCTRL1, the data control signal DCS and the emission control signal SCTRL2.

[0037] The data driver 200 may receive a data control signal DCS and an image data signal DATA from the image controller 100, convert the image data signal DATA into a data signal, and output the data signal to a plurality of data lines DL1 to DLm, the data signal being an analog voltage corresponding to a gradation value of the image data signal DATA. At the same time, according to the data control signal DCS, the data driver may output a data voltage and a blank voltage to a plurality of pixel units.

[0038] The scan driver SD may be disposed at one side of the display panel DP, and the scan lines GIL1 to GILn, GCL1 to GCLn, and GWL1 to GWLn+1 may extend from the scan driver SD in a horizontal direction.

[0039] In a possible implementation, a plurality of regions may be divided in the scan driver, which are recorded as a first drive region, a second drive region, and a third drive region. The plurality of scan lines in the first drive region are used to drive the first display region to display, the plurality of scan lines in the second drive region are used to drive the second display region to display, and the plurality of scan lines in the third drive region are used to drive the third display region to display. In this way, in the multi-frequency mode, by controlling the scan lines in different drive regions of the scan driver, different display regions are controlled to be driven at different frequencies, so as to minimize the high-frequency driving of the static picture region and reduce the power consumption of the display panel.

[0040] refer to Figure 4 As shown, it is a schematic diagram of the local structure of a display panel provided in an embodiment of the present application. The scan driver SD includes a first drive area, a second drive area and a third drive area. The first drive area AA1 includes scan lines GIL1 to GILi-1, GCL1 to GCLi-1 and GWL1 to GWLj-1, so as to drive the first display area AA1 at a first frequency. The second drive area AA2 includes scan lines GILi to GILk-1, GCLi to GCLk-1 and GWLj to GWLl-1, so as to drive the second display area AA2 at a second frequency. The third drive area AA3 includes scan lines GILk to GILn, GCLk to GCLn and GWLl to GWLn+1, so as to drive the third display area AA3 at a third frequency.

[0041] The display device may further include an emission driver EDC, which is arranged on the other side of the display panel DP, from which emission control lines EML1 to EMLn extend, and each pixel unit is connected to an emission control line. Of course, the scan driver SD and the emission driver EDC may be arranged on the same side of the display panel DP.

[0042] The scan lines GIL1 to GILn, GCL1 to GCLn, and GWL1 to GWLn+1 and the emission control lines EML1 to EMLn are arranged to be spaced apart from each other in a vertical direction, and the data lines DL1 to DLm are arranged to be spaced apart from each other in a horizontal direction.

[0043] The display device may further include a voltage generator 300 , which may generate voltages required for operating the display panel, and the voltage generator 300 generates a first driving voltage ELVDD, a second driving voltage ELVSS, a first initialization voltage VINT1 , and a second initialization voltage VINT2 to provide to each pixel unit.

[0044] Specifically, refer to Figure 5As shown, it is a schematic diagram of a scanning signal in a multi-frequency mode provided in an embodiment of the present application, wherein scanning signals GI1 to GI1200 correspond to the first display area, scanning signals GI1201 to GI2400 correspond to the second display area, and scanning signals GI2401 to GI3600 correspond to the third display area. The first display area can be driven to display at a first frequency of 30 Hz, the second display area can be driven to display at a second frequency of 120 Hz, and the third display area can be driven to display at a third frequency of 60 Hz.

[0045] In the first frame, each of the scan signals GI1 to GI3600 is activated to the on level, driving the three display areas to display images. For the first display area, in the second to fourth frames, the scan signals GI1 to GI1200 are activated to the off level, keeping the clock at a low level, stopping the transmission of the scan signal, causing the pixel unit to stop receiving the data signal, and also stopping the sending of the data signal, stopping the transmission of the image to the first display area, and maintaining the picture of the first frame. In the fifth to 120th frames, the first to fourth frames are repeated continuously to achieve a refresh rate of 30HZ for the first display area.

[0046] For the second display area, from the second frame to the 120th frame, the scan signals GI1201 to GI2400 are activated to the on level, and the picture displayed in the second display area is updated in each frame, achieving a refresh rate of 120HZ. In the third display area, in the second frame, the scan signals GI2401 to GI3600 are activated to the off level, the clock remains at a low level, and the transmission of the scan signal is stopped, so that the pixel unit stops receiving the data signal, and also stops sending the data signal, maintaining the picture of the previous frame. The third frame to the 120th frame continuously repeats the first frame and the second frame, so that a refresh rate of 60HZ can be achieved. Three different refresh rates are achieved in the three display areas, saving power consumption of data signal transmission and reducing power consumption of the display device.

[0047] refer to Figure 6 As shown, it is an equivalent circuit diagram of a pixel unit provided in an embodiment of the present application, and the pixel unit may include a first transistor T1 to a seventh transistor T7, a capacitor Cst, and a light-emitting diode ED. A plurality of scan lines GILj, GCLj, GWLj, and GWLj+1 may transmit scan signals GIj, GCj, GWj, and GWj+1, respectively, an emission control line EMLj may transmit an emission signal EMj, a data line DLi may transmit a data signal Di, and a first drive voltage line VL1, a second drive voltage line VL2, a third drive voltage line VL3, and a fourth drive voltage line VL4 of an image controller may transmit a first drive voltage ELVDD, a second drive voltage ELVSS, a first initialization voltage VINT1, and a second initialization voltage VINT2, respectively.

[0048] The first transistor T1 includes a first electrode connected to the first driving voltage line VL1 via a fifth transistor T5, a second electrode electrically connected to the anode of the light emitting diode ED via a sixth transistor T6, and a gate electrode connected to one end of the capacitor Cst. The first electrode of the first transistor T1 may receive a data signal Di supplied from the data line DLi according to a switching operation of the second transistor T2, and the first transistor T1 may supply a driving current Id to the light emitting diode ED in response to an emission signal EMj received through an emission control line EMLj.

[0049] The second transistor T2 may be turned on in response to a scan signal GWj received through the scan line GWLj to transmit a data signal Di received through the data line DLi. The third transistor T3 may be turned on in response to a scan signal GCj received through the scan line GCLj to connect the gate electrode and the second electrode of the first transistor T1 to each other so as to connect the first transistor T1 in a diode manner.

[0050] The fourth transistor T4 is turned on in response to the scan signal GIj received through the scan line GILj, and transmits the first initialization voltage VINT1 to the gate electrode of the first transistor T1 to perform an initialization operation for initializing the voltage of the gate electrode of the first transistor T1. The fifth transistor T5 and the sixth transistor T6 can be turned on at the same time in response to the emission signal EMj received through the emission control line EMLj, so that the first driving voltage ELVDD can be compensated by the first transistor T1 connected in a diode manner, and the compensated first driving voltage ELVDD can be transmitted to the light emitting diode ED.

[0051] The seventh transistor T7 may be turned on in response to the scan signal GWj+1 received through the scan line GWLj+1 to bypass the current of the anode of the light emitting diode ED to the fourth driving voltage line VL4. One end of the capacitor Cst is connected to the gate electrode of the first transistor T1, and the other end of the capacitor Cst is connected to the first driving voltage line VL1. The cathode of the light emitting diode ED may be connected to the second driving voltage line VL2 for transmitting the second driving voltage ELVSS.

[0052] During the initialization period within a frame, a scan signal GIj of a turn-on level (e.g., a high level) is provided through the scan line GILj, the fourth transistor T4 is turned on in response to the scan signal GIj of the turn-on level, and the first initialization voltage VINT1 is transmitted to the gate electrode of the first transistor T1 via the fourth transistor T4 so as to initialize the first transistor T1.

[0053] During the data programming and compensation period, when the scan signal GCj of the on-level is supplied via the scan line GCLj, the third transistor T3 is turned on. The first transistor T1 is connected in a diode manner to the turned-on third transistor T3 and is forward biased. In addition, the second transistor T2 is turned on by the scan signal GWj of the on-level (e.g., low level). Therefore, the compensation voltage Di-Vth obtained by subtracting the threshold voltage Vth of the first transistor T1 from the data signal Di supplied through the data line DLi is applied to the gate electrode of the first transistor T1. That is, the gate voltage applied to the gate electrode of the first transistor T1 may be the compensation voltage Di-Vth.

[0054] The first driving voltage ELVDD and the compensation voltage Di-Vth may be applied to the two electrodes of the capacitor Cst, and a charge corresponding to the difference between the voltages of the two electrodes may be stored in the capacitor Cst. A scanning signal GWj+1 of a conduction level is supplied to the seventh transistor T7 through the scanning line GWLj+1 to turn on the seventh transistor T7. A portion of the driving current Id may flow through the seventh transistor T7 as a bypass current Ibp.

[0055] During the emission period, the emission signal EMj supplied through the emission control line EMLj changes from the off level to the on level, and the fifth transistor T5 and the sixth transistor T6 are turned on by the emission signal EMj of the on level. Therefore, the drive current Id is generated according to the voltage difference between the first drive voltage ELVDD and the gate voltage of the gate electrode of the first transistor T1, and the drive current Id is supplied to the light emitting diode ED via the sixth transistor T6, so that the emission current Ied flows through the light emitting diode ED.

[0056] In the examples of this application, refer to Figure 7 As shown, it is a structural schematic diagram of an image controller provided by an embodiment of the present application. The image controller may include a memory 110, a frequency mode determination part 120 and a signal generator 130. The memory 110 stores the image signal IDATk of the current frame (for example, the kth frame). The frequency mode determination part is used to determine the operation mode based on the image signal and the control signal and output the mode signal MD. The mode signal MD may be a 1-bit signal indicating the normal mode and the multi-frequency mode. The signal generator 130 is used to output the data control signal DCS and the scan control signal SCTRL1 corresponding to the mode signal MD. The data control signal DCS is input to the data driver, and the scan control signal SCTRL1 is input to the scan driver.

[0057] Specifically, when the mode signal MD indicates the normal mode, the signal generator 130 can output the image data signal DATA, the data control signal DCS, the emission control signal SCTRL2 and the scan control signal SCTRL1 for driving each of the first display area DA1, the second display area DA2 and the third display area DA3 at a normal driving frequency.

[0058] When the mode signal MD indicates a multi-frequency mode, the signal generator 130 may output an image data signal DATA, a data control signal DCS, an emission control signal SCTRL2, and a scan control signal SCTRL1 for driving the first display area DA1 at a first frequency, the second display area DA2 at a second frequency, and the third display area DA3 at a third frequency.

[0059] The embodiment of the present application provides a display device, the display device includes a display panel, a data driver, a scan driver and an image controller, the display panel is divided into a first display area, a second display area and a third display area, each of the first display area, the second display area and the third display area includes a plurality of pixel units connected to a plurality of data lines and a plurality of scan lines, the data driver is used to drive the plurality of data lines, the scan driver is used to drive the plurality of scan lines, the image controller is used to control the data driver and the scan driver, when the operation mode is a multi-frequency mode, the first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency. In this way, multiple refresh rates can be realized in at least three display areas of the display panel, the display panel can be driven at multiple frequencies, the refresh rate can be reasonably set according to the display requirements of different display areas of the display panel, and the high-frequency driving of the static picture area can be reduced as much as possible under the premise of meeting the display requirements, thereby reducing the power consumption of the display panel.

[0060] Based on the above display device, the present application embodiment also provides a method for driving the display device, referring to Figure 8 , which is a flow chart of a method for driving a display device provided in an embodiment of the present application, the method includes the following steps.

[0061] S101, when the operation mode is a multi-frequency mode, dividing a display panel into a first display area, a second display area and a third display area.

[0062] S102, driving the first display area to display at a first frequency, driving the second display area to display at a second frequency, and driving the third display area to display at a third frequency.

[0063] In the embodiment of the present application, the method may further include determining whether a still image and a moving image are displayed simultaneously in the second display area; and when the duration of the still image reaches a predetermined time, changing the operation mode to a normal mode.

[0064] The embodiment of the present application provides a method for driving a display device. When the operation mode is a multi-frequency mode, the display panel is divided into a first display area, a second display area, and a third display area. The first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency. In this way, multiple refresh rates can be achieved in at least three display areas of the display panel, and the display panel can be driven at multiple frequencies. According to the display requirements of different display areas of the display panel, the refresh rate is reasonably set. On the premise of meeting the display requirements, the high-frequency driving of the static picture area is reduced as much as possible, thereby reducing the power consumption of the display panel.

[0065] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0066] The above is only a preferred implementation mode of the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of protection of the technical solution of the present application.

Claims

1. A display device, characterized in that: include: A display panel, the display panel comprising a first display area, a second display area and a third display area, each of the first display area, the second display area and the third display area comprising a plurality of pixel units connected to a plurality of data lines and a plurality of scan lines; A data driver, used for driving the plurality of data lines; A scan driver, used for driving the plurality of scan lines; An image controller, used to control the data driver and the scan driver, and when the operation mode is a multi-frequency mode, drives the first display area to display at a first frequency, drives the second display area to display at a second frequency, and drives the third display area to display at a third frequency; The scan driver comprises a first drive area, a second drive area and a third drive area, wherein the plurality of scan lines in the first drive area are used to drive the first display area to display, the plurality of scan lines in the second drive area are used to drive the second display area to display, and the plurality of scan lines in the third drive area are used to drive the third display area to display; In the display panel, the first display area is located above the second display area and the third display area, and the first frequency is lower than the second frequency and the third frequency; when a moving image is displayed in the second display area and a still image is displayed in the third display area, the second frequency is higher than the third frequency; When the operation mode is the multi-frequency mode, the scanning signals of the plurality of scanning lines in the first driving area are transmitted periodically, the scanning signals are activated to a conduction level in the first frame in a single cycle to transmit the scanning signals, and the scanning signals are activated to a cut-off level in other frames in the single cycle to stop transmitting the scanning signals; When the operation mode is the multi-frequency mode, the scanning signals of the plurality of scanning lines in the third driving area are transmitted periodically, the scanning signals are activated to a conduction level in the first frame of a single cycle to transmit the scanning signals, and the scanning signals are activated to a cut-off level in other frames of a single cycle to stop transmitting the scanning signals; When the operation mode is the multi-frequency mode, the scanning signals of the plurality of scanning lines in the second driving area are activated to a conduction level in each frame to transmit the scanning signals; When the operation mode is the multi-frequency mode, a still image and a moving image are displayed in the second display area, and when the duration of the still image reaches a predetermined time, the image controller changes the operation mode to a normal mode; during the normal mode, each of the first display area, the second display area, and the third display area is driven at a normal frequency.

2. The display device according to claim 1, characterized in that The image controller comprises: a frequency mode determination section for determining the operation mode based on an image signal and a control signal and outputting a mode signal; The signal generator is used to output a data control signal and a scan control signal corresponding to the mode signal, wherein the data control signal is input to the data driver, and the scan control signal is input to the scan driver.

3. The display device according to claim 2, characterized in that: The data driver outputs a data voltage and a blank voltage to the plurality of pixel units according to the data control signal.

4. A method for driving a display device, characterized in that: The method comprises: When the operation mode is the multi-frequency mode, the display panel is divided into a first display area, a second display area and a third display area; The first display area is driven to display at a first frequency, the second display area is driven to display at a second frequency, and the third display area is driven to display at a third frequency; The plurality of scan lines in the first driving area are used to drive the first display area to display, the plurality of scan lines in the second driving area are used to drive the second display area to display, and the plurality of scan lines in the third driving area are used to drive the third display area to display; In the display panel, the first display area is located above the second display area and the third display area, and the first frequency is lower than the second frequency and the third frequency; when a moving image is displayed in the second display area and a still image is displayed in the third display area, the second frequency is higher than the third frequency; When the operation mode is the multi-frequency mode, the scanning signals of the plurality of scanning lines in the first driving area are transmitted periodically, the scanning signals are activated to the on level in the first frame in a single cycle to transmit the scanning signals, and the scanning signals are activated to the off level in other frames in the single cycle to stop the transmission of the scanning signals; when the operation mode is the multi-frequency mode, the scanning signals of the plurality of scanning lines in the third driving area are transmitted periodically, the scanning signals are activated to the on level in the first frame in a single cycle to transmit the scanning signals, and the scanning signals are activated to the off level in other frames in the single cycle to stop the transmission of the scanning signals; when the operation mode is the multi-frequency mode, the scanning signals of the plurality of scanning lines in the second driving area are activated to the on level in each frame to transmit the scanning signals; The method further comprises: Determine whether a still image and a moving image are displayed simultaneously in the second display area; and when the duration of the still image reaches a predetermined time, change the operation mode to a normal mode; during the normal mode, drive each of the first display area, the second display area and the third display area at a normal frequency.

Images