Driving method of display device and display device

Abstract

The application discloses a display device driving method and display device, the display device includes data line, scanning line and LED lamp, the display device is divided into multiple display areas, each display area includes at least three scanning lines, the adjacent scanning lines in each display area are connected head to tail, each row LED lamp corresponding to each scanning line is provided with a column driving unit, and the driving method comprises the following steps: generating corresponding row driving signals corresponding to each display area; the scanning lines of each display area receive the same row driving signals; the column driving unit corresponding to each row LED lamp simultaneously outputs column driving signals to each LED lamp respectively; wherein, in the same time, the LED lamps in each display area display simultaneously. The display device is divided into multiple display areas in the application, the scanning lines in the display area are communicated with each other, form a scanning line, avoid the current row LED to bright, other rows are unable to bright, the time of not bright is idle, not conducive to the improvement of refresh rate.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a driving method for a display device and a display device. Background Technology

[0002] With the improvement of living standards, LED displays have placed higher demands on line drivers, from simple P-channel metal-oxide-semiconductor field-effect transistors (PMOSFETs) to multi-functional line drivers with higher integration and stronger functions.

[0003] The existing scanning sequence outputs sequentially based on cascaded shift registers. Because the refresh rate is affected by the line-by-line scanning of SCAN(n), each refresh requires all SCAN registers to be turned on once. When SCAN1 is turned on, only SCAN1 row is lit, and other rows are not lit. Then SCAN2 is turned on, and only SCAN2 row is lit, and other rows are not lit. Then SCAN3 is turned on, and only SCAN3 row is lit, and other rows are not lit. The three rows are lit in turn, forming a cycle that constitutes one refresh. Thus, the refresh rate is naturally limited. How to improve the refresh rate of LED display devices has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this application is to provide a driving method for a display device and a display device that improves the refresh rate of the display device.

[0005] This application discloses a driving method for a display device. The display device includes data lines, scan lines, and LEDs driven by the data lines and scan lines. Along the data line direction, the display device is divided into multiple display areas. Each display area includes at least three scan lines. Adjacent scan lines in each display area are connected end-to-end. Each row of LEDs corresponding to each scan line is provided with a column driving unit. The driving method includes the following steps:

[0006] Generate a corresponding row drive signal for each display area;

[0007] Each scan line in the display area receives the same row drive signal; and

[0008] Each row of LED lights corresponds to a column driver unit that simultaneously outputs a column driver signal to each LED light.

[0009] At the same time, the LEDs in each display area are displayed simultaneously.

[0010] Optionally, in the step of receiving the same row drive signal to the scan line of each display area, the row drive signal includes at least a first scan time, a second scan time, and a third scan time within one cycle, and a scan off time is provided between two adjacent scan times. During the scan off time, the column drive unit does not output a column drive signal to the LED.

[0011] During the first, second, and third scan times, a first level signal is input to the scan line, and the column driving unit outputs a column driving signal to the corresponding LED to emit light; during the scan off time, a second level signal is input to the scan line, and the column driving unit does not output a column driving signal to the LED, so the LED does not emit light.

[0012] Optionally, in the step of receiving the same row drive signal to the scan line of each display area, one cycle of the row drive signal includes at least a first scan time, a second scan time, a third scan time, a fourth scan time, and a fifth scan time;

[0013] During the first, second, and third scan times, a first level signal is input to the scan line, and the column driving unit outputs a column driving signal to the corresponding LED to emit light; during the fourth and fifth scan times, the first level signal is input to the scan line, and the column driving unit does not output a column driving signal to the LED, so the LED does not emit light.

[0014] Optionally, in the step of receiving the same row drive signal to the scan line of each display area, one cycle of the row drive signal includes at least a first scan time, a second scan time, a third scan time, a fourth scan time, a fifth scan time, and a sixth scan time; a first level signal is continuously input to the scan line within one cycle of the row drive signal;

[0015] Specifically, during the first, second, third, and sixth scan times, a first level signal is input to the scan line, and the column driving unit outputs a column driving signal to the corresponding LED to emit light; during the fourth and fifth scan times, the first level signal is input to the scan line, and the column driving unit does not output a column driving signal to the LED, so the LED does not emit light; the voltage value of the first level signal is greater than or equal to the voltage value at the cathode of the LED when it does not emit light.

[0016] Optionally, the display device includes a refresh rate adjustment circuit, which includes a control module and a switch module. The switch module is disposed between two display areas and is used to connect two adjacent scan lines in the two display areas. The step of generating a corresponding row drive signal for each display area further includes the following step:

[0017] Generate refresh rate instructions based on user selection; and

[0018] The corresponding control signal is generated according to the refresh rate instruction to control the corresponding switch module to turn on, so that multiple display areas receive the same row drive signal.

[0019] Optionally, the display device includes a column driver chip, the column driver unit is integrated on the column driver chip, the column driver chip has a column driver signal output selection unit, the column driver signal output selection unit is connected to the column driver unit, and the step of the column driver unit corresponding to each row of LEDs simultaneously outputting column driver signals to each LED includes:

[0020] The column drive signal output by each column drive unit is detected. When the column drive signal is a low level signal, the column drive signal output selection unit controls the corresponding column drive unit to turn off.

[0021] This application also discloses a display device driven by any of the driving methods described above. The display device includes a gate driving circuit and a data driving circuit. The gate driving circuit outputs a row driving signal to a scan line. The data driving circuit includes a column driving chip, which outputs a column driving signal to a data line. The scan line is connected to the anode of an LED, and the data line is connected to the cathode of an LED.

[0022] Optionally, the display device includes multiple display areas and a refresh rate adjustment circuit. The refresh rate adjustment circuit includes a control module and a switch module. The switch module is connected to two adjacent scan lines in two adjacent display areas.

[0023] The switch module includes an active switch, the input of which is connected to the last scan line of the previous display area, the output of which is connected to the first scan line of the current display area, and the control terminal is connected to the control module.

[0024] Optionally, the gate driving circuit provides a row driving signal output terminal for each display area, and the row driving signal output terminal is connected to the first scan line of the display area.

[0025] Optionally, the display device further includes a row drive signal output control unit, which is connected between the output terminal of the gate drive circuit and the scan line. When two adjacent display areas are connected, the control unit controls the scan line of the current display area to disconnect from the gate drive circuit.

[0026] Compared to existing driving methods that change the refresh rate by adjusting the row scan time, this application does not change the scan time. This application mainly utilizes the time when one row is lit and the other rows are not lit. By adding data lines, the number of times each LED is lit and dimmed is controlled. When display is needed, SCAN is pulled low. At this time, all data lines output waveforms according to the display needs of their respective LEDs. Each LED can be displayed in each time period, and there is no LED that needs to wait for the next time period to update data. Therefore, there is no "idle" time span for any LED, thereby improving the refresh rate of the display device. Attached Figure Description

[0027] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0028] Figure 1 This is a flowchart illustrating a driving method according to the first embodiment of this application;

[0029] Figure 2 This is a waveform diagram of the row drive signal and column drive signal according to the first embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the equivalent circuit structure of the display area in the first embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the row drive signal and column drive signal waveforms according to the second embodiment of this application;

[0032] Figure 5 This is a schematic diagram of the row drive signal and column drive signal waveforms according to the third embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the structure of the display area of ​​a display device driven by the driving method of the fourth embodiment of this application;

[0034] Figure 7 This is a flowchart illustrating the driving method of the fifth embodiment of this application;

[0035] Figure 8 This is a schematic diagram of the display area of ​​the display device according to the fifth embodiment of this application;

[0036] Figure 9 This is a schematic diagram of the structure of the display device according to the sixth embodiment of this application;

[0037] Figure 10 This is a schematic diagram of the structure of the display device according to the seventh embodiment of this application;

[0038] Figure 11 This is a schematic diagram of the structure of the display device according to the eighth embodiment of this application.

[0039] Among them, 100 is the display device; 110 is the scan line; 120 is the data line; 130 is the LED light; 140 is the display area; 150 is the refresh rate adjustment circuit; 151 is the control module; 152 is the switch module; 153 is the active switch; 160 is the column drive unit; 170 is the column drive chip; 171 is the column drive signal output selection unit; 180 is the gate drive circuit; 190 is the data drive circuit; and 200 is the row drive signal output control unit. Detailed Implementation

[0040] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0041] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0042] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0045] like Figure 1 As shown, as a first embodiment of this application, a driving method for a display device 100 is disclosed. The display device 100 includes a data line 120, a scan line 110, and LED lights 130 driven by the data line 120 and the scan line 110. Along the direction of the data line 120, the display device 100 is divided into a plurality of display areas 140. Each display area 140 includes at least three scan lines 110. Adjacent scan lines 110 in each display area 140 are connected end to end. Each row of LED lights 130 corresponding to each scan line 110 is provided with a column driving unit 160. The driving method includes the following steps:

[0046] S1: Generates a corresponding row drive signal for each display area;

[0047] S2: Each scan line in the display area receives the same row drive signal; and

[0048] S3: The column driver unit corresponding to each row of LEDs simultaneously outputs column driver signals to each LED.

[0049] refer to Figures 1 to 3 As shown, each data line 120 is connected to one LED 130 in the display area 140. At the same time, the LEDs 130 in each display area 140 are displayed simultaneously. All LEDs 130 in the display area 140 receive the same row drive signal. When the first row of LEDs is lit, the second and third rows are also lit. All data lines 120 output waveforms according to the display needs of their own LEDs. It can be seen that since each LED 130 can be displayed in each time period, there is no LED 130 that needs to be updated in the next time period. Therefore, there is no "idle" time span for all LEDs 130. The data refresh only takes the time of one row. The refresh rate can be increased by n times (n is the original number of rows). Taking three scan lines 110 as an example, the refresh rate can be increased to 3 times the original refresh rate.

[0050] Furthermore, in the step of receiving the same row drive signal to the scan line 110 of each display area 140, the row drive signal includes at least a first scan time t1, a second scan time t2 and a third scan time t3 within one cycle, and a scan off time is provided between two adjacent scan times. During the scan off time, the column drive unit 160 does not output column drive signals to the LED lamp 130.

[0051] Specifically, during the first scan time t1, the second scan time t2, and the third scan time t3, a first level signal is input to the scan line 110, and the column driving unit 160 outputs a column driving signal to the corresponding LED 130 to emit light; during the scan off time, a second level signal is input to the scan line 110, and the column driving unit 160 does not output a column driving signal to the LED 130, so the LED 130 does not emit light.

[0052] like Figure 4 As shown, as a second embodiment of this application, a driving method for a display device 100 is disclosed, referring to... Figure 3 and Figure 4 As shown, unlike the above embodiment, in the step of receiving the same row drive signal to the scan line 110 of each display area 140, the row drive signal includes at least a first scan time t1, a second scan time t2, a third scan time t3, a fourth scan time t4, and a fifth scan time t5 within one cycle.

[0053] Specifically, during the first scan time t1, the second scan time t2, and the third scan time t3, a first level signal is input to the scan line 110, and the column driving unit 160 outputs a column driving signal to the corresponding LED 130 to emit light; during the fourth scan time t4 and the fifth scan time t5, the first level signal is input to the scan line 110, the column driving unit 160 does not output a column driving signal to the LED 130, and the LED 130 does not emit light.

[0054] Taking a three-row, three-column LED as an example: the original three SCAN signals are changed to one SCAN signal, and the original three data lines 120 are changed to nine data lines 120; the SCAN signal changes from multi-line row-by-row scanning to single-line multiple changes; when display is needed, SCAN is pulled low, and all data lines 120 output waveforms according to the display needs of their respective LEDs. It can be seen that because each LED 130 can be displayed in every time period, there is no LED 130 that needs to wait for the next time period to update its data, so there is no "idle" time span for any LED 130; data refresh only takes the time of one line, increasing the refresh rate by 3 times; when display is not needed, SCAN is pulled high, and all data lines 120 output waveforms according to the display needs of their respective LEDs, while each LED 130 does not display.

[0055] like Figure 5 As shown, in the third embodiment of this application, unlike the above embodiments, in the step of receiving the same row drive signal to the scan line 110 of each display area 140, one cycle of the row drive signal includes at least a first scan time t1, a second scan time t2, a third scan time t3, a fourth scan time t4, a fifth scan time t5, and a sixth scan time t6; a first level signal is continuously input to the scan line 110 within one cycle of the row drive signal;

[0056] Specifically, during the first scan time t1, the second scan time t2, the third scan time t3, and the sixth scan time t6, a first level signal is input to the scan line 110, and the column driving unit 160 outputs a column driving signal to the corresponding LED 130 to emit light; during the fourth scan time t4 and the fifth scan time t5, the first level signal is input to the scan line 110, and the column driving unit 160 does not output a column driving signal to the LED 130, so the LED 130 does not emit light; the voltage value of the first level signal is greater than or equal to the voltage value at the cathode of the LED when it is not emitting light.

[0057] like Figure 6As shown, as a fourth embodiment of this application, and an improvement over the above embodiments, in order to reduce the number of driver chips and reduce costs, the column units can be swapped. The column driving data generated by the column driver chip 170 can be selectively transmitted to the column driver units 160 corresponding to different row scan lines 110 through the column driver signal output selection unit 171. This can reduce the number of input channels of the driver IC and save IC costs. Specifically, the display device 100 includes a column driver chip 170, and the column driver unit 160 is integrated on the column driver chip 170. The column driver chip 170 is provided with a column driver signal output selection unit 171, which is connected to the column driver unit 160. The step of the column driver unit 160 corresponding to each row of LED lights 130 simultaneously outputting column driving signals to each LED light 130 includes: detecting the column driving signal output by each column driver unit 160; when the column driving signal is a low-level signal, the column driver signal output selection unit 171 controls the corresponding column driver unit 160 to turn off.

[0058] like Figure 7 As shown, in the fifth embodiment of this application, the display device 100 includes a refresh rate adjustment circuit 150. The refresh rate adjustment circuit 150 includes a control module 151 and a switch module 152. The switch module 152 is disposed between two display areas 140 and is used to connect two adjacent scan lines 110 in the two display areas 140. Before the step of generating a corresponding row drive signal for each display area 140, the following step is also included:

[0059] S01: Generate refresh rate instructions based on user selection; and

[0060] S02: Generate a corresponding control signal according to the refresh rate instruction to control the corresponding switch module 152 to be turned on, so that multiple display areas 140 receive the same row drive signal.

[0061] In this embodiment, a switch module 152 is added between each row of scan lines 110 to control the connection between two scan lines 110, thereby forming the required display area 140. For example, in six scan lines 110, a switch module 152 is provided between adjacent scan lines 110 to control the connection between the upper and lower scan lines 110. Figure 8As shown, if three scan lines 110 are to be used as a display area 140, then only the first two switch modules 152 and the last two switch modules 152 can be turned on, while the middle switch module 152 remains off. If six scan lines 110 are to be used as a display area 140, then all switch modules 152 can be turned on. Of course, the division scheme of the display area 140 in this application is not limited to this. By controlling the switch modules 152 of any two scan lines 110, six, seven, or more scan lines 110 can be connected to form a display area 140, and the resulting refresh rates will also be different. Therefore, when the user selects a high refresh rate, it is necessary to control more scan lines 110 to be connected.

[0062] like Figure 9 As shown, as the sixth embodiment of this application, a display device 100 is disclosed. The display device 100 in this embodiment can be driven by the driving method described in any of the above embodiments. The display device 100 includes a gate driving circuit 180 and a data driving circuit 190. The gate driving circuit 180 outputs a row driving signal to the scan line 110. The data driving circuit 190 includes a column driving chip 170. The column driving chip 170 outputs a column driving signal to the data line 120. The scan line 110 is connected to the anode of the LED lamp 130, and the data line 120 is connected to the cathode of the LED lamp 130.

[0063] Along the data line 120, the display device 100 is divided into multiple display areas 140. Each display area 140 includes three scan lines 110. Taking the first three scan lines 110, SCAN1, SCAN2, and SCAN3, as an example, the input of SCAN1 is connected to the output of the gate drive circuit 180, the output of SCAN1 is connected to the input of SCAN2, and the output of SCAN2 is connected to the input of SCAN3. Only SCAN1 receives the row drive signal. All three scan lines 110 receive the same row drive signal and are driven. Each LED 130 can be displayed in each time period. There is no row of LEDs 130 that needs to be updated in the next time period. Therefore, there is no "idle" time span for all LEDs 130, thus achieving a high refresh rate display.

[0064] like Figure 10As shown, as the seventh embodiment of this application, unlike the embodiments described above, the display device 100 includes a plurality of display areas 140 and a refresh rate adjustment circuit 150. The refresh rate adjustment circuit 150 includes a control module 151 and a switch module 152. The switch module 152 connects two adjacent scan lines 110 in two adjacent display areas 140. The switch module 152 includes an active switch 153. The input terminal of the active switch 153 is connected to the last scan line 110 of the previous display area 140, the output terminal is connected to the first scan line 110 of the current display area 140, and the control terminal is connected to the control module 151.

[0065] The switch module 152 can control the interconnection between two adjacent scan lines 110, and can arbitrarily change the size of the display area 140 to obtain the refresh rate required by the user, providing the user with a wider range of refresh rate options; for example, if the refresh rate is increased by three times, the three scan lines 110 are connected, and if it is increased by six times, the six scan lines 110 are connected, which can be freely selected and adjusted.

[0066] refer to Figure 11 As shown in the eighth embodiment of this application, the display device 100 further includes a horizontal drive signal output control unit 200. The horizontal drive signal output control unit 200 is connected between the output terminal of the gate drive circuit 180 and the scan line 110. When two adjacent display areas 140 are connected, the control unit 200 controls the scan line 110 of the current display area 140 to disconnect from the gate drive circuit 180. When SACN1, SACN2, and SACN3 form a display area 140, only one horizontal drive signal needs to be input to SACN1. That is, the corresponding parts of SACN2 and SACN3 do not need to generate or input horizontal drive signals to SACN2 and SACN3, reducing the operation of the horizontal drive signal circuits corresponding to SACN2 and SACN3, which helps to reduce the power consumption of the entire gate drive circuit 180.

[0067] In addition, generally, when the display area 140 has been divided, for example, three scan lines 110 constitute one display area 140, then the gate driving circuit 180 provides a row driving signal output terminal for each display area 140. The row driving signal output terminal is connected to the first scan line 110 of the display area 140. The internal sub-circuits in the gate driving circuit 180 can be reduced. For example, before the display area 140 is divided, one scan line 110 corresponds to one sub-circuit in the gate driving circuit 180, receiving the row driving signal from the sub-circuit for driving. However, now that the three scan lines 110 are connected together to form one display area 140, only one sub-circuit needs to be retained to output the row driving signal to the three scan lines 110. The sub-circuits of the gate driving circuit 180 can be reduced to one-third of the original. In particular, if the gate driving circuit 180 is formed by a gate driving chip, then two-thirds of the gate driving chip can be reduced, thereby reducing the manufacturing cost.

[0068] It should be noted that the limitations on each step involved in this solution are not considered as limiting the order of steps, provided that they do not affect the implementation of the specific solution. The steps listed first can be executed first, later, or even simultaneously. As long as this solution can be implemented, it should be considered to fall within the scope of protection of this application.

[0069] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0070] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A driving method of a display device including a data line, a scan line, and an LED lamp driven by the data line and the scan line, characterized by, Along the data line direction, the display device is divided into a plurality of display areas, each of the display areas includes at least three scan lines, the scan lines in each of the display areas are connected end to end, each row of LED lamps corresponding to each scan line is provided with a column driving unit, and the driving method comprises the steps of: generating a corresponding row driving signal for each display area; the scan lines of each display area receive the same row driving signal; and the column driving units corresponding to each row of LED lamps simultaneously output a column driving signal to each LED lamp, respectively; wherein, at the same time, the LED lamps in each display area display simultaneously; the display device comprises a refresh rate adjusting circuit, the refresh rate adjusting circuit comprises a control module and a switch module, the switch module is arranged between two display areas and is used for connecting two adjacent scan lines in the two display areas, and the step of generating a corresponding row driving signal for each display area further comprises the steps of: generating a refresh rate instruction according to user selection; and generating a corresponding control signal according to the refresh rate instruction to control the switch module to be turned on, so that the plurality of display areas receive the same row driving signal.

2. The driving method according to claim 1, wherein In the step of the scan lines of each display area receiving the same row driving signal, one period of the row driving signal at least includes a first scanning time, a second scanning time and a third scanning time, and a scanning off time is arranged between the two adjacent scanning times, and the column driving unit does not output a column driving signal to the LED lamp in the scanning off time; wherein, a first level signal is input to the scan line in the first scanning time, the second scanning time and the third scanning time, the column driving unit outputs a column driving signal to the corresponding LED lamp to emit light; in the scanning off time, a second level signal is input to the scan line, and the column driving unit does not output a column driving signal to the LED lamp, and the LED lamp does not emit light.

3. The driving method of claim 1, wherein In the step of the scan lines of each display area receiving the same row driving signal, one period of the row driving signal at least includes a first scanning time, a second scanning time, a third scanning time, a fourth scanning time and a fifth scanning time; wherein, a first level signal is input to the scan line in the first scanning time, the second scanning time and the third scanning time, the column driving unit outputs a column driving signal to the corresponding LED lamp to emit light; in the fourth scanning time and the fifth scanning time, a first level signal is input to the scan line, and the column driving unit does not output a column driving signal to the LED lamp, and the LED lamp does not emit light.

4. The driving method of claim 1, wherein In the step of the scan lines of each display area receiving the same row driving signal, one period of the row driving signal at least includes a first scanning time, a second scanning time, a third scanning time, a fourth scanning time, a fifth scanning time and a sixth scanning time; a first level signal is continuously input to the scan line in one period of the row driving signal; The first level signal is input to the scan line in the first scanning time, the second scanning time, the third scanning time and the sixth scanning time, and the column driving unit outputs the column driving signal to the corresponding LED lamp to emit light.

5. The driving method according to any one of claims 2 to 4, wherein The display device comprises a column driving chip, the column driving unit is arranged on the column driving chip, the column driving chip is provided with a column driving signal output selection unit, the column driving signal output selection unit is connected with the column driving unit, and the column driving unit corresponding to each row of LED lamps simultaneously outputs the column driving signal to each LED lamp. The column driving signal output selection unit controls the corresponding column driving unit to be closed when the column driving signal is a low level signal.

6. A display device, characterized by comprising: The display device is driven by using the driving method in any one of claims 1-5, the display device comprises a gate driving circuit and a data driving circuit, the gate driving circuit outputs a row driving signal to a scan line, the data driving circuit comprises a column driving chip, the column driving chip outputs a column driving signal to a data line, the scan line is connected with an anode of an LED lamp, and the data line is connected with a cathode of the LED lamp. The display device comprises a plurality of display areas and a refresh rate adjusting circuit, the refresh rate adjusting circuit comprises a control module and a switch module, and the switch module is connected with two adjacent scan lines in two adjacent display areas. The switch module comprises a main switch, an input end of the main switch is connected with the last scan line of a previous display area, an output end of the main switch is connected with the first scan line of a current display area, and a control end of the main switch is connected with the control module.

7. The display device of claim 6, wherein The gate driving circuit is provided with one row driving signal output end corresponding to each display area, and the row driving signal output end is connected with the first scan line of the display area.

8. The display device of claim 6, wherein, The display device further comprises a row driving signal output control unit, the row driving signal output control unit is connected between an output end of the gate driving circuit and the scan line, and when the two adjacent display areas are connected, the row driving signal output control unit controls the scan line of the current display area to be disconnected from the gate driving circuit.

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