Driving method and device of display panel

Abstract

The invention discloses a driving method and device of a display panel. The driving method comprises the following steps: when an effective display area of a display panel changes, determining a current effective display area of the display panel according to a data sending signal of a current frame; an effective display area of the display panel comprises at least one of a first display area and a second display area. And adjusting the gate driving signal and the display data according to the current effective display area, so that the gate driving signal and the display data are output to the current effective display area. The display panel comprises a first display area and a second display area, and a gate driving signal and display data are adjusted according to a current effective display area, so that the gate driving signal and the display data are output to the current effective display area. Therefore, foldable display can be realized through one display panel, the number of display panels and the number of driving chips required by the foldable display panel can be reduced, and the cost of the display panel is reduced.

Description

Technical Field

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

[0002] Organic Light-Emitting Diode (OLED) display has many advantages such as self-luminescence and high contrast, and is a display device with broad application prospects. At present, a foldable display module may include at least two display panels, and different driver chips are used for driving, which makes the cost of the foldable display module too high. Summary of the invention

[0003] The present invention provides a method and device for driving a display panel to reduce the cost of the display panel.

[0004] In a first aspect, an embodiment of the present invention provides a method for driving a display panel, wherein the display panel includes a first display area and a second display area; the method for driving the display panel includes:

[0005] When the effective display area of ​​the display panel changes, a signal is sent according to the data of the current frame to determine the current effective display area of ​​the display panel; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area;

[0006] The gate driving signal and the display data are adjusted according to the current effective display area so that the gate driving signal and the display data are output to the current effective display area.

[0007] Optionally, when the previous effective display area overlaps with the current effective display area, adjusting the display data according to the current effective display area includes:

[0008] Determine a difference display area according to the current effective display area and the previous effective display area;

[0009] After the effective display area of ​​the display panel changes, the display data corresponding to the difference display area is black-inserted for the first i frames; wherein i is an integer greater than or equal to 1.

[0010] Optionally, after performing black insertion of the first i frames on the display data corresponding to the difference display area, the method further includes:

[0011] Outputting a first data signal according to the data transmission signal of the current frame;

[0012] The current effective display area is driven to display according to the first data signal.

[0013] Optionally, determining the difference display area according to the current effective display area and the previous effective display area includes:

[0014] When the previous effective display area includes the first display area and the current effective display area is the second display area, determining that the difference display area is the first display area;

[0015] When the previous effective display area includes the second display area and the current effective display area is the first display area, determining the difference display area to be the second display area;

[0016] Preferably, performing black insertion of the first i frames on the display data corresponding to the difference display area includes:

[0017] When the difference display area is the first display area, performing black insertion of the first i frames on the display data corresponding to the first display area;

[0018] When the difference display area is the second display area, black insertion of the first i frames is performed on the display data corresponding to the second display area.

[0019] Optionally, when the last valid display area does not overlap with the current valid display area, adjusting the display data according to the current valid display area includes:

[0020] Outputting a second data signal according to the data transmission signal of the current frame; the second data signal includes the data signal of the first display area and the data signal of the second display area;

[0021] The first display area and the second display area are driven to display according to the second data signal.

[0022] Optionally, the display panel further includes a first gate driving circuit and a second gate driving circuit; the first gate driving circuit is connected to a first pixel in the first display area, and the second gate driving circuit is connected to a second pixel in the second display area; adjusting the gate driving signal according to the current effective display area includes:

[0023] Controlling the first gate driving circuit to provide a first gate driving signal and / or the second gate driving circuit to provide a second gate driving signal according to the current effective display area;

[0024] Preferably, the first gate driving circuit includes a first light emitting control circuit and a first scanning driving circuit; controlling the first gate driving circuit to provide a first gate driving signal according to the current effective display area includes:

[0025] Outputting a first light-emitting start signal to the first light-emitting control circuit according to the current effective display area;

[0026] Outputting a first scan start signal to the first scan driving circuit according to the current effective display area;

[0027] Preferably, the second gate driving circuit includes a second light emitting control circuit and a second scanning driving circuit; controlling the second gate driving circuit to provide a second gate driving signal according to the current effective display area includes:

[0028] Outputting a second light-emitting start signal to the second light-emitting control circuit according to the current effective display area;

[0029] A second scan start signal is output to the second scan driving circuit according to the current effective display area.

[0030] Optionally, the effective display area includes the first display area and the second display area; and the method further includes:

[0031] adjusting a line period of a current data signal according to a first refresh frequency of the first display area and a second refresh frequency of the second display area;

[0032] Driving the first display area and the second display area to display according to the current data signal;

[0033] Preferably, the display panel further includes a first gate driving circuit and a second gate driving circuit; the first gate driving circuit is connected to a first pixel in the first display area, and the second gate driving circuit is connected to a second pixel in the second display area; the method further includes:

[0034] The row period of the first gate driving signal provided by the first gate driving circuit is adjusted according to the first refresh frequency of the first display area, and the row period of the second gate driving signal provided by the second gate driving circuit is adjusted according to the second refresh frequency of the second display area.

[0035] Optionally, adjusting the row period of the current data signal according to the first refresh frequency of the first display area and the second refresh frequency of the second display area includes:

[0036] adjusting a row period of the current data signal according to a first refresh frequency of the first display area, a second refresh frequency of the second display area, a first preset logic signal, and a first preset logic operation;

[0037] Preferably, adjusting the row period of the first gate driving signal provided by the first gate driving circuit according to the first refresh frequency of the first display area, and adjusting the row period of the second gate driving signal provided by the second gate driving circuit according to the second refresh frequency of the second display area, comprises:

[0038] The row period of the first gate driving signal and the row period of the second gate driving signal are adjusted according to the first refresh frequency of the first display area, the second refresh frequency of the second display area, the second preset logic signal and the second preset logic operation.

[0039] Optionally, before determining the current effective display area of ​​the display panel according to the data sending signal of the current frame, the method further includes:

[0040] When the effective display area of ​​the display panel changes, the data transmission signal of the current frame is acquired based on the frame synchronization signal.

[0041] In a second aspect, an embodiment of the present invention further provides a driving device for a display panel, wherein the display panel includes a first display area and a second display area; the driving device for the display panel includes:

[0042] a first determining module, configured to determine a current effective display area of ​​the display panel according to a data transmission signal of a current frame when the effective display area of ​​the display panel changes; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area;

[0043] The regulating module is used for regulating the gate driving signal and the display data according to the current effective display area, so that the gate driving signal and the display data are output to the current effective display area.

[0044] The technical solution of the embodiment of the present invention is to set the display panel to include a first display area and a second display area, and then when the effective display area of ​​the display panel changes, the driving device of the display panel sends a signal according to the data of the current frame to determine the current effective display area of ​​the display panel, and then adjust the gate driving signal and display data according to the current effective display area, so that the gate driving signal and display data are output to the current effective display area. Thus, a foldable display can be realized through a display panel, the number of display panels and the number of driving chips required for the foldable display panel are reduced, and the cost of the display panel is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the structure of a display panel provided for related technology;

[0046] Figure 2 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of a display state of a display panel provided by an embodiment of the present invention;

[0048] Figure 4 A schematic diagram of display status of another display panel provided by an embodiment of the present invention;

[0049] Figure 5 A schematic diagram of display status of another display panel provided by an embodiment of the present invention;

[0050] Figure 6 A flow chart of a method for driving a display panel provided by an embodiment of the present invention;

[0051] Figure 7 A flowchart of another display panel driving method provided by an embodiment of the present invention;

[0052] Figure 8 A waveform diagram of a display panel when an effective display area changes according to an embodiment of the present invention;

[0053] Fig. 9 A schematic diagram of waveforms when an effective display area of ​​another display panel changes according to an embodiment of the present invention;

[0054] Fig.10 A schematic diagram of waveforms when an effective display area of ​​another display panel changes according to an embodiment of the present invention;

[0055] Fig.11 A flowchart of another display panel driving method provided by an embodiment of the present invention;

[0056] Fig.12 A schematic diagram of waveforms when an effective display area of ​​another display panel changes according to an embodiment of the present invention;

[0057] Fig.13 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0058] Fig.14 A flowchart of another display panel driving method provided by an embodiment of the present invention;

[0059] Fig.15 A schematic diagram of waveforms when an effective display area of ​​another display panel changes according to an embodiment of the present invention;

[0060] Fig.16 A schematic diagram of waveforms when an effective display area of ​​another display panel changes according to an embodiment of the present invention;

[0061] Fig.17 A schematic diagram of waveforms when an effective display area of ​​another display panel changes according to an embodiment of the present invention;

[0062] Fig.18 A waveform diagram of a driving signal when different display areas of a display panel have different refresh frequencies provided by an embodiment of the present invention;

[0063] Fig.19A schematic structural diagram of a driving device for a display panel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0065] Figure 1 A schematic diagram of the structure of a display module provided for related technologies. Figure 1 As shown, the display module includes a main screen 1 and a sub-screen 2. The main screen 1 is a display panel, and the sub-screen 2 is another display panel. During the display process of the display module, the display module has three effective display areas, corresponding to the three display modes of the display module, wherein one display mode is that the main screen 1 displays, the sub-screen 2 does not display, and the effective display area is the main screen 1; another display mode is that the main screen 1 does not display, the sub-screen 2 displays, and the effective display area is the sub-screen 2; another display mode is that both the main screen 1 and the sub-screen 2 display, and the effective display area is the main screen 1 and the sub-screen 2. When the display module switches between different display modes, at least one of the main screen 1 and the sub-screen 2 will change its display state. Among them, the display state change may include the main screen 1 or the sub-screen 2 changing from a display state to a non-display state, and may also include the main screen 1 or the sub-screen 2 changing from a non-display state to a display state. The main screen 1 and the sub-screen 2 are different display panels, and are driven by different driver chips, so that the display module requires two display panels and two driver chips, which increases the cost of the display module.

[0066] In view of the above technical problems, an embodiment of the present invention provides a method for driving a display panel, which is used to drive a display panel having at least two display areas. Figure 2 FIG. 1 is a schematic diagram of a display panel provided by an embodiment of the present invention. Figure 2 As shown, the display panel includes a first display area A, a second display area B and a driving unit 101. The driving unit 101 can be arranged on one side of the first display area A or the second display area B, and is used to provide driving signals for pixels in the first display area A and the second display area B to control the pixel states in the first display area A and the second display area B, thereby controlling the display states of the first display area A and the second display area B. Figure 2 exemplarily shows that the driving unit 101 is arranged on a side of the second display area B away from the first display area A.

[0067] The display states of the first display area A and the second display area B are controlled by the driving unit 101, so that the display panel has three effective display areas corresponding to the three display states of the display panel. Specifically, Figure 3 A display state diagram of a display panel provided by an embodiment of the present invention, such as Figure 3 As shown, one of the display states of the display panel may be that the driving unit 101 controls the first display area A to display, and the second display area B to not display. At this time, the effective display area is the first display area A. Figure 4 A schematic diagram of display status of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, another display state of the display panel may be that the driving unit 101 controls the first display area A not to display and the second display area B to display, and at this time the effective display area is the second display area B. Figure 5 A display state diagram of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, another display state of the display panel can be that the driving unit 101 controls both the first display area A and the second display area B to display, and at this time, the effective display area is the first display area A and the second display area B.

[0068] In some embodiments, the display panel may be a foldable display panel. In this case, the first display area A may be a secondary screen of the foldable display panel. When the foldable display panel is in a folded state, the first display area A is disposed on the front of the foldable display panel. The second display area B may be the main screen of the foldable display panel. When the foldable display panel is in an unfolded state, the second display area B is disposed on the front of the foldable display panel. By controlling the display states of the first display area A and the second display area B by the drive unit 101, application scenarios in which the foldable display panel is in different states can be met. Thus, a foldable display can be realized through one display panel, reducing the number of display panels and the number of drive chips required for the foldable display panel, and reducing the cost of the display panel.

[0069] Figure 6 A flow chart of a method for driving a display panel provided in an embodiment of the present invention is provided. This embodiment can be applied to driving a display panel including a first display area A and a second display area B. The display states of the first display area A and the second display area B can be independently controlled, and the effective display area of ​​the display panel has a variable state. The method can be executed by a driving device of the display panel, and the driving device of the display panel can be integrated in the driving unit 101. Figures 2 to 6 As shown, the method includes:

[0070] S110, when the effective display area of ​​the display panel changes, sending a signal according to data of the current frame to determine the current effective display area of ​​the display panel; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area;

[0071] The driving unit of the display panel can receive the data transmission signal corresponding to each frame output by the terminal through the data transmission end, and drive the display panel to display the current frame according to the data transmission signal. The data transmission signal can include display transmission data and display transmission instructions; the display transmission data corresponds to the effective display area, and the driving unit can process the display transmission data according to the display transmission instruction to form corresponding display data, and then form a data signal according to the display data. And generate a corresponding driving signal according to the display transmission instruction to drive the effective display area to display.

[0072] Exemplarily, the data transmission end may be a mobile industry processor interface (MIPI). When the terminal where the display panel is located is a mobile phone, the drive unit 101 of the display panel may be connected to the mobile phone motherboard via MIPI, and receive the data transmission signal corresponding to each frame output by the mobile phone motherboard via MIPI. The data transmission signals corresponding to different frames of the display panel may be different. When the effective display area of ​​the display panel changes, the data transmission signal of the current frame received by the display panel changes.

[0073] The current effective display area may be the display area of ​​the display panel that is displayed in the current frame. Specifically, the display area of ​​the display panel that is displayed in the current frame includes the first display area and the second display area, and the current effective display area of ​​the display panel is the first display area and the second display area; the display area of ​​the display panel that is displayed in the current frame is the first display area, and the current effective display area of ​​the display panel is the first display area; the display area of ​​the display panel that is displayed in the current frame is the second display area, and the current effective display area of ​​the display panel is the second display area.

[0074] The data transmission signal of the current frame may correspond to the data transmission signal received by the display panel when the effective display area of ​​the display panel changes to the current effective display area. The data transmission signal of the current frame may include the display transmission data of the current frame and the display transmission instruction of the current frame, and the display transmission data of the current frame corresponds to the current effective display area. The driving unit processes the display transmission data of the current frame according to the display transmission instruction of the current frame to form the display data corresponding to the current effective display area, and forms the data signal corresponding to the current effective display area according to the display data corresponding to the current effective display area, such as a data voltage. At the same time, a driving signal of the current effective display area is formed according to the display transmission instruction of the current frame to drive the current effective display area to display. Wherein, when the data signal and the driving signal corresponding to the current effective display area are formed according to the data transmission signal of the current frame, the current effective display area can be determined according to the data signal and the driving signal. Exemplarily, when the data corresponding to the first display area in the data signal is in a high-impedance state and the data corresponding to the second display area is a regular data signal, it can be determined that the current effective display area is the second display area; when the data corresponding to the first display area in the data signal is a regular data signal and the data corresponding to the second display area is in a high-impedance state, it can be determined that the current effective display area is the first display area; when the data corresponding to the first display area and the second display area in the data signal are both regular data signals, it can be determined that the current effective display area is the first display area and the second display area.

[0075] S120 , adjusting the gate driving signal and the display data according to the current effective display area, so that the gate driving signal and the display data are output to the current effective display area.

[0076] The display panel may include a gate drive circuit, which is connected to the pixels of the display area and is used to provide a gate drive signal for the pixels of the display area. The display data corresponds to the data signal of the pixels of the display area. After determining the current effective display area, the gate drive signal and the display data can be adjusted according to the current effective display area, so that the gate drive signal drives the pixels corresponding to the current effective display area, and the display data provides a data signal for the current effective display area, so that the current effective display area sends a signal display according to the data of the current frame, thereby realizing the display area switching of the display panel.

[0077] The technical solution of this embodiment is to set the display panel to include a first display area and a second display area, and then when the effective display area of ​​the display panel changes, the driving device of the display panel sends a signal according to the data of the current frame to determine the current effective display area of ​​the display panel, and then adjust the gate driving signal and display data according to the current effective display area, so that the gate driving signal and display data are output to the current effective display area. Thus, a foldable display can be realized through a display panel, reducing the number of display panels and the number of driving chips required for the foldable display panel, and reducing the cost of the display panel.

[0078] Figure 7 FIG. 1 is a flow chart of another method for driving a display panel provided by an embodiment of the present invention. Figure 7 As shown, when the previous effective display area overlaps with the current effective display area, the method includes:

[0079] S210, when the effective display area of ​​the display panel changes, determine the current effective display area of ​​the display panel according to the data of the current frame; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area;

[0080] S220, determining a difference display area according to the current effective display area and the previous effective display area;

[0081] The previous effective display area is the effective display area before the effective display area of ​​the display panel changes to the current effective display area. When the effective display area of ​​the display panel changes from the previous effective display area to the current effective display area, the difference display area may include a display area that changes from a display state to a non-display state, and may also include a display area that changes from a non-display state to a display state.

[0082] In some embodiments, the difference display area may be a display area that changes from a display state to a non-display state. Exemplarily, when the effective display area of ​​the display panel changes, when the previous effective display area is the first display area and the second display area, and the current effective display area is the second display area, the difference display area is the first display area.

[0083] S230, after the effective display area of ​​the display panel changes, perform black insertion of the first i frames on the display data corresponding to the difference display area; wherein i is an integer greater than or equal to 1.

[0084] Among them, when the effective display area of ​​the display panel changes, the display state of the difference display area changes. At this time, the display data corresponding to the difference display area is black-inserted for the first i frames, so that the display state change of the difference display area is transitioned through a black screen, thereby improving the display screen abnormality caused by the display state change of the difference display area, and improving the display effect of the display panel. Exemplarily, when the display state of the difference display area changes from a display state to a non-display state, the first frame at the beginning of the display state change of the difference display area can be black-inserted, so that the difference display area displays a black screen in the first frame after the display state changes. When there is a residual screen before the display state of the difference display area changes, the display abnormality caused by the residual screen can be improved, and the display effect of the display panel is improved.

[0085] According to the technical solution of the present embodiment, when the effective display area of ​​the display panel changes, the difference display area whose display state changes can be determined based on the current effective display area and the previous effective display area, and then the display data corresponding to the difference display area is black-inserted for the first i frames, so that the display state change of the difference display area is transitioned through a black screen, thereby improving the display picture abnormality caused by the display state change of the difference display area and improving the display effect of the display panel.

[0086] In some embodiments, after performing black insertion of the first i frames on the display data corresponding to the difference display area, the method further includes:

[0087] Outputting a first data signal according to a data transmission signal of a current frame;

[0088] Among them, after obtaining the data sending signal of the current frame, the driving unit can form display data corresponding to the current effective display area according to the data sending signal of the current frame, and then form a data signal corresponding to the current effective display area according to the display data corresponding to the current effective display area, that is, the first data signal.

[0089] The current effective display area is driven to display according to the first data signal.

[0090] When the first data signal is output according to the data sending signal of the current frame, a driving signal of the current effective display area can also be formed according to the first display sending instruction to drive the current effective display area to display.

[0091] In some embodiments, determining the difference display area according to the current effective display area and the previous effective display area includes:

[0092] When the last effective display area includes the first display area and the current effective display area is the second display area, determining the difference display area to be the first display area;

[0093] Wherein, when the last effective display area includes the first display area, the last effective display area may be the first display area, or the first display area and the second display area. When the current effective display area is the second display area, when the effective display area of ​​the display panel changes, the first display area changes from a display state to a non-display state, and the difference display area is determined to be the first display area.

[0094] In some embodiments, when the last effective display area is the first display area, the display state of the second display area changes from a non-display state to a display state. When the effective display area of ​​the display panel changes, the second display area does not have a residual image before the display state changes. In the subsequent driving process, the second display area can be prevented from being blacked out after the display state changes, thereby reducing the driving performance requirements of the display panel.

[0095] For example, Figure 8 A waveform diagram of a display panel when the effective display area changes according to an embodiment of the present invention. Figure 8 As shown, the last valid display area of ​​the display panel can be the first display area A, and the current valid display area can be the first display area A and the second display area B. At this time, the display state of the second display area B changes from a non-display state to a display state. Among them, MIPI TX is a waveform diagram showing the transmission data in the data transmission signal, Data path is a waveform diagram showing the display data formed by the driving unit according to the data transmission signal, and Source is a waveform diagram showing the data signal output to the display area. Figure 8 In the first and second frames, the waveform of MIPI TX is Data A, and the driving unit drives the first display area A to display according to the waveform of MIPI TX. Figure 8 In the third frame, the waveform of MIPI TX changes from Data A to Data A+B, and the driving unit forms the display data corresponding to the first display area A and the display data corresponding to the second display area B according to the waveform of MIPI TX, and then outputs them to the first display area A and the second display area B, so that the data signal waveforms of the first display area A and the second display area B are regular data signals, and the first display area A and the second display area B display normally according to Data A+B. Before the third frame, the second display area B does not have a residual picture, so that black insertion of the second display area B in the third frame can be avoided, reducing the driving performance requirements of the display panel.

[0096] Preferably, performing black insertion of the first i frames on the display data corresponding to the difference display area includes:

[0097] When the difference display area is the first display area, black insertion of the first i frames is performed on the display data corresponding to the first display area;

[0098] When the difference display area is the first display area, the first display area can be changed from a display state to a non-display state. When the effective display area of ​​the display panel changes, the display data corresponding to the first display area is blacked out for the first i frames, which can improve the abnormal display image caused by the first display area changing from a display state to a non-display state, thereby improving the display effect of the display panel.

[0099] For example, Fig. 9 A waveform diagram of another display panel when the effective display area changes according to an embodiment of the present invention. Fig. 9As shown, the last valid display area of ​​the display panel can be the first display area A and the second display area B, and the current valid display area can be the second display area B. At this time, the difference display area of ​​the display panel is the first display area A. Among them, MIPITX is a waveform diagram showing the transmission data in the data transmission signal, Data path is a waveform diagram showing the display data formed by the driving unit according to the data transmission signal, and Source is a waveform diagram showing the data signal output to the display area. Fig. 9 In the third frame of the MIPI TX, the waveform of MIPI TX changes from Data A+B to Data B, and the driving unit forms the black insertion display data Black of the first display area A according to the waveform of MIPI TX, and forms the display data corresponding to the second display area B. Then it is output to the first display area A and the second display area B, so that the data signal waveform of the first display area A is in the high impedance state Hiz, and the first display area A displays a black screen; the data signal waveform of the second display area B is a regular data signal, and the second display area B displays normally according to Data B. In this way, the first display area A can be subjected to a black insertion transition, which improves the abnormal display screen phenomenon caused by the first display area A changing from a display state to a non-display state, and improves the display effect of the display panel.

[0100] In some embodiments, the last effective display area of ​​the display panel may be the first display area A, and the current effective display area may be the second display area B. At this time, the difference display area of ​​the display panel is the first display area A. Fig.10 A waveform diagram of another display panel when the effective display area changes according to an embodiment of the present invention. Fig.10 As shown, in Fig.10 In the third frame, the waveform of MIPI TX changes from Data A to Data B, and the driving unit forms the black insertion display data Black of the first display area A according to the waveform of MIPI TX, and forms the display data corresponding to the second display area B. Then it is output to the first display area A and the second display area B, so that the data signal waveform of the first display area A is in the high impedance state Hiz, and the first display area A displays a black screen; the data signal waveform of the second display area B is a regular data signal, and the second display area B displays normally according to Data B. In this way, the first display area A can be subjected to a black insertion transition, which improves the abnormal display screen phenomenon caused by the first display area A changing from a display state to a non-display state, and improves the display effect of the display panel.

[0101] When the last effective display area includes the second display area and the current effective display area is the first display area, determining the difference display area to be the second display area;

[0102] Wherein, when the last effective display area includes the second display area, the last effective display area may be the second display area, or the first display area and the second display area. When the current effective display area is the first display area, when the effective display area of ​​the display panel changes, the second display area changes from a display state to a non-display state, and the difference display area is determined to be the second display area.

[0103] In some embodiments, when the last effective display area is the second display area, the display state of the first display area changes from a non-display state to a display state. When the effective display area of ​​the display panel changes, the first display area does not have a residual image before the display state changes. In the subsequent driving process, black insertion of the first display area after the display state changes can be avoided, thereby reducing the driving performance requirements of the display panel.

[0104] In some embodiments, the last effective display area of ​​the display panel may be the second display area B, and the current effective display area may be the first display area A and the second display area B. At this time, the display state of the first display area A changes from a non-display state to a display state. When the effective display area is the last effective display area, the waveform of MIPI TX is Data B, and the driving unit drives the second display area B to display according to the waveform of MIPI TX. When the effective display area is the current effective display area, the waveform of MIPI TX changes from Data B to Data A+B, and the driving unit forms the display data corresponding to the first display area A and the display data corresponding to the second display area B according to the waveform of MIPI TX, and then outputs them to the first display area A and the second display area B, so that the data signal waveforms of the first display area A and the second display area B are regular data signals, and the first display area A and the second display area B are displayed normally according to Data A+B. Before the third frame, the first display area A does not have a residual picture, so that black insertion of the first display area A in the third frame can be avoided, reducing the driving performance requirements of the display panel.

[0105] Preferably, performing black insertion of the first i frames on the display data corresponding to the difference display area includes:

[0106] When the difference display area is the second display area, black insertion of the first i frames is performed on the display data corresponding to the second display area.

[0107] When the difference display area is the second display area, the second display area can be changed from a display state to a non-display state. When the effective display area of ​​the display panel changes, the display data corresponding to the second display area is blacked out for the first i frames, which can improve the abnormal display image caused by the second display area changing from a display state to a non-display state, thereby improving the display effect of the display panel.

[0108] In some embodiments, the last effective display area of ​​the display panel may be the first display area A and the second display area B, and the current effective display area may be the first display area A. At this time, the difference display area of ​​the display panel is the second display area B. When the effective display area changes, the waveform of MIPI TX changes from Data A+B to Data A, and the driving unit forms the black insertion display data Black of the second display area B according to the waveform of MIPI TX, and forms the display data corresponding to the first display area A. Then it is output to the first display area A and the second display area B, so that the data signal waveform of the second display area B is in the high impedance state Hiz, and the second display area B displays a black screen; the data signal waveform of the first display area A is a conventional data signal, and the first display area A displays normally according to Data A. In this way, the second display area B can be subjected to a black insertion transition, which improves the abnormal display screen phenomenon caused by the second display area B changing from a display state to a non-display state, and improves the display effect of the display panel.

[0109] In some embodiments, the last effective display area of ​​the display panel may be the second display area B, and the current effective display area may be the first display area A. At this time, the difference display area of ​​the display panel is the second display area B. When the effective display area changes, the waveform of MIPI TX changes from Data B to Data A, and the driving unit forms the black display data Black of the second display area B according to the waveform of MIPI TX, and forms the display data corresponding to the first display area A. Then it is output to the first display area A and the second display area B, so that the data signal waveform of the second display area B is in the high impedance state Hiz, and the second display area B displays a black screen; the data signal waveform of the first display area A is a regular data signal, and the first display area A displays normally according to Data A. In this way, the second display area B can be subjected to a black insertion transition, which improves the abnormal display screen phenomenon caused by the second display area B changing from a display state to a non-display state, and improves the display effect of the display panel.

[0110] Continue to refer Figures 8 to 10 , before sending a signal to determine the current effective display area of ​​the display panel according to the data of the current frame, it also includes:

[0111] When the effective display area of ​​the display panel changes, the data transmission signal of the current frame is acquired based on the frame synchronization signal.

[0112] The frame synchronization signal is used to indicate the frame start position. When the frame synchronization signal is obtained, the data transmission signal of the current frame can be obtained, and the current effective display area can be driven to display based on the data transmission signal of the current frame. Figures 8 to 10 TE is a waveform diagram of a frame synchronization signal. At the beginning of each frame, the frame synchronization signal TE can be obtained, and a data transmission signal is obtained based on the frame synchronization signal TE, and then the current effective display area is driven to display according to the data transmission signal.

[0113] Fig.11 FIG. 1 is a flow chart of another method for driving a display panel provided by an embodiment of the present invention. Fig.11 As shown, the method includes:

[0114] S310, when the effective display area of ​​the display panel changes, determine the current effective display area of ​​the display panel according to the data of the current frame; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area;

[0115] S320, outputting a second data signal according to the data transmission signal of the current frame; the second data signal includes a data signal of the first display area and a data signal of the second display area;

[0116] Wherein, when the last effective display area does not overlap with the current effective display area, the data transmission signal of the current frame corresponds to the data transmission signal received by the display panel when the effective display area of ​​the display panel changes to the first display area and the second display area. The data transmission signal of the current frame may include the display transmission data of the current frame and the display transmission instruction of the current frame, and the display transmission data of the current frame corresponds to the first display area and the second display area. The second data signal may be a display data signal output to the first display area and the second display area. When the data transmission signal of the current frame corresponds to the first display area and the second display area, the second data signal corresponds to the data signal of the first display area and the data signal of the second display area. Exemplarily, the second data signal may correspond to the data voltage of the first pixel in the first display area and the data voltage of the second pixel in the second display area. The driving unit processes the display transmission data of the current frame according to the display transmission instruction of the current frame, forms the display data corresponding to the first display area and the second display area, and then forms the data signal corresponding to the first display area and the second display area according to the display data corresponding to the first display area and the second display area.

[0117] In some embodiments, before outputting the second data signal according to the data transmission signal of the current frame, the second data signal can also be acquired according to the frame synchronization signal, and the first display area and the second display area can be driven to display based on the data transmission signal of the current frame.

[0118] S330 , driving the first display area and the second display area to display according to the second data signal.

[0119] When the second data signal is output according to the data transmission signal of the current frame, the driving signals of the first display area and the second display area can also be formed according to the display transmission instruction of the current frame to drive the first display area and the second display area to display. Fig.12 A waveform diagram of another display panel when the effective display area changes according to an embodiment of the present invention. Fig.12As shown, when the effective display area of ​​the display panel changes from the first display area to the second display area, a frame of Data A+B can be added between the MIPI TX waveform changing from Data A to Data B, thereby increasing the change process of the MIPI TX waveform from Data A to Data A+B and then from Data A+B to Data B, and additional transition frames between the first display area and the second display area can be added, which can further improve the display effect of different display areas in the process of display state change when the effective display area of ​​the display panel changes, thereby further improving the display effect of the display panel.

[0120] In some embodiments, Fig.13 FIG. 1 is a schematic diagram of another display panel structure provided by an embodiment of the present invention. Fig.13 As shown, the display panel further includes a first gate driving circuit 102 and a second gate driving circuit 103; the first gate driving circuit 101 is connected to the first pixel in the first display area A, and the second gate driving circuit 103 is connected to the second pixel in the second display area B. The driving unit 101 is also connected to the first gate driving circuit 102 and the second gate driving circuit 103, and is used to control whether the first gate driving circuit 102 provides a first gate driving signal for the first pixel, and control whether the second gate driving circuit 103 provides a second gate driving signal for the second pixel.

[0121] Fig.14 FIG. 1 is a flow chart of another method for driving a display panel provided by an embodiment of the present invention. Fig.14 As shown, the method includes:

[0122] S410, when the effective display area of ​​the display panel changes, determine the current effective display area of ​​the display panel according to the data of the current frame; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area;

[0123] S420, controlling the first gate driving circuit to provide a first gate driving signal, and / or the second gate driving circuit to provide a second gate driving signal according to the current effective display area;

[0124] Wherein, when the current effective display area is the first display area, the driving unit can control the first gate driving circuit to provide the first gate driving signal to the first pixel of the first display area, so that the first pixel can work according to the first gate driving signal and emit light according to the data signal corresponding to the first display area, thereby realizing the display of the first display area. When the current effective display area is the second display area, the driving unit can control the second gate driving circuit to provide the second gate driving signal to the second pixel of the second display area, so that the second pixel can work according to the second gate driving signal and emit light according to the data signal corresponding to the second display area, thereby realizing the display of the second display area. When the current effective display area is the first display area and the second display area, the driving unit can control the first gate driving circuit to provide the first gate driving signal to the first pixel of the first display area, and control the second gate driving circuit to provide the second gate driving signal to the second pixel of the second display area. So that the first pixel can work according to the first gate driving circuit and emit light according to the data signal corresponding to the first display area, and the second pixel can work according to the second gate driving signal and emit light according to the data signal corresponding to the second display area, thereby realizing the display of the first display area and the second display area.

[0125] In some embodiments, the first gate driving circuit includes a first light emitting control circuit and a first scanning driving circuit; the first light emitting control circuit is connected to the first pixel and is used to provide a first light emitting control signal to the first pixel. The first scanning driving circuit is connected to the first pixel and is used to provide a first scanning driving signal to the first pixel. Fig.13 The first light-emitting control circuit includes a first light-emitting start signal input terminal for inputting a first light-emitting start signal EIN1. When the first light-emitting start signal EIN1 is valid, the first light-emitting control circuit outputs the first light-emitting control signal to the first pixel. The first scan drive circuit includes a first scan start signal input terminal for inputting a first scan start signal SIN1. When the first scan start signal SIN1 is valid, the first scan drive circuit outputs the first scan drive signal to the first pixel.

[0126] Controlling the first gate driving circuit to provide a first gate driving signal according to the current effective display area includes:

[0127] Outputting a valid first light-emitting start signal to a first light-emitting control circuit according to the current valid display area;

[0128] Wherein, when the current effective display area includes the first display area, the driving unit may output a valid first light-emitting start signal according to the current effective display area, so that the first light-emitting control circuit may output the first light-emitting control signal. When the current effective display area does not include the first display area, the driving unit may output an invalid first light-emitting start signal according to the current effective display area, so that the first light-emitting control circuit may stop outputting the first light-emitting control signal, so that the first pixel cannot work normally.

[0129] Outputting a first scan start signal to a first scan driving circuit according to the current effective display area;

[0130] Wherein, when the current effective display area includes the first display area, the driving unit can output a valid first scan start signal according to the current effective display area, so that the first scan driving circuit can output the first scan driving signal. At this time, the first pixel works according to the first scan driving signal and the first light-emitting control signal, and emits light according to the data signal corresponding to the first display area to realize the display of the first display area. When the current effective display area does not include the first display area, the driving unit can output an invalid first scan start signal according to the current effective display area, so that the first scan driving circuit can stop outputting the first scan driving signal, so that the first pixel cannot work normally.

[0131] In some embodiments, the second gate driving circuit includes a second light emitting control circuit and a second scanning driving circuit; the second light emitting control circuit is connected to the second pixel and is used to provide a second light emitting control signal to the second pixel. The second scanning driving circuit is connected to the second pixel and is used to provide a second scanning driving signal to the second pixel. Fig.13 The second light-emitting control circuit includes a second light-emitting start signal input terminal for inputting a second light-emitting start signal EIN2. When the second light-emitting start signal EIN2 is valid, the second light-emitting control circuit outputs the second light-emitting control signal to the second pixel. The second scan drive circuit includes a second scan start signal input terminal for inputting a second scan start signal SIN2. When the second scan start signal SIN2 is valid, the second scan drive circuit outputs a second scan drive signal to the second pixel.

[0132] Controlling the second gate driving circuit to provide a second gate driving signal according to the current effective display area includes:

[0133] Outputting a second light-emitting start signal to a second light-emitting control circuit according to the current effective display area;

[0134] Wherein, when the current effective display area includes the second display area, the driving unit may output a valid second light-emitting start signal according to the current effective display area, so that the second light-emitting control circuit may output the second light-emitting control signal. When the current effective display area does not include the second display area, the driving unit may output an invalid second light-emitting start signal according to the current effective display area, so that the second light-emitting control circuit may stop outputting the second light-emitting control signal, so that the second pixel cannot work normally.

[0135] A second scan start signal is output to the second scan driving circuit according to the current effective display area.

[0136] Wherein, when the current effective display area includes the second display area, the driving unit can output a valid second scan start signal according to the current effective display area, so that the second scan driving circuit can output the second scan driving signal. At this time, the second pixel works according to the second scan driving signal and the second light-emitting control signal, and emits light according to the data signal corresponding to the second display area, so as to realize the display of the second display area. When the current effective display area does not include the second display area, the driving unit can output an invalid second scan start signal according to the current effective display area, so that the second scan driving circuit can stop outputting the second scan driving signal, so that the second pixel cannot work normally.

[0137] For example, Fig.15 A waveform diagram of another display panel when the effective display area changes according to an embodiment of the present invention. Fig.15 As shown, SIN1 is a waveform diagram of the first scan start signal, EIN1 is a waveform diagram of the first light-emitting start signal, SIN2 is a waveform diagram of the second scan start signal, and EIN2 is a waveform diagram of the second light-emitting start signal. The first scan start signal, the first light-emitting start signal, the second scan start signal, and the second light-emitting start signal are all high level valid.

[0138] The last effective display area of ​​the display panel may be the first display area, and the current effective display area may be the first display area and the second display area. When the effective display area of ​​the display panel is the first display area, the first scan start signal and the first light emission start signal are effective signals, and the second scan start signal and the second light emission start signal are invalid signals, so that the first light emission control circuit and the first scan drive circuit output the corresponding first light emission control signal and the first scan drive signal to the first pixel, so that the first pixel emits light according to the data signal corresponding to the first display area, and the display of the first display area is realized. When the effective display area of ​​the display panel is the first display area and the second display area, the first scan start signal, the first light emission start signal, the second scan start signal and the second light emission start signal all output effective signals, so that the first light emission control circuit and the first scan drive circuit output the corresponding first light emission control signal and the first scan drive signal to the first pixel, so that the first pixel emits light according to the data signal corresponding to the first display area, and the display of the first display area is realized. At the same time, the second light emission control circuit and the second scan drive circuit output the corresponding second light emission control signal and the second scan drive signal to the second pixel, so that the second pixel emits light according to the data signal corresponding to the second display area, and the display of the second display area is realized.

[0139] In some embodiments, when the last effective display area of ​​the display panel can be the first display area and the second display area, the current effective display area can be the second display area. At this time, the waveforms of the first scan start signal, the first light emission start signal, the second scan start signal, and the second light emission start signal can also be set according to the effective display area. For example, Fig.16 A waveform diagram of another display panel when the effective display area changes according to an embodiment of the present invention. Fig.16 As shown, when the effective display area of ​​the display panel is the first display area and the second display area, the first scan start signal, the first light emission start signal, the second scan start signal and the second light emission start signal all output valid signals. When the effective display area of ​​the display panel is the second display area, the second scan start signal and the second light emission start signal are valid signals, and the first scan start signal and the first light emission start signal are invalid signals.

[0140] In some embodiments, the last effective display area of ​​the display panel may be the first display area, and the current effective display area may be the second display area. In this case, the waveforms of the first scan start signal, the first light emission start signal, the second scan start signal, and the second light emission start signal may also be set according to the effective display area. For example, Fig.17 A waveform diagram of another display panel when the effective display area changes according to an embodiment of the present invention. Fig.17As shown, when the effective display area of ​​the display panel is the first display area, the first scan start signal and the first light emission start signal are valid signals, and the second scan start signal and the second light emission start signal are invalid signals. When the effective display area of ​​the display panel is the second display area, the first scan start signal and the first light emission start signal are invalid signals, and the second scan start signal and the second light emission start signal are valid signals.

[0141] In some embodiments, the last effective display area may not overlap with the current effective display area. Exemplarily, when the last effective display area is the first display area, the current effective display area may be the second display area. When the last effective display area is the second display area, the current effective display area may be the first display area. When the effective display area of ​​the display panel changes, one of the display areas changes from a display state to a non-display state, and the other display area changes from a non-display state to a display state. During the change of the effective display area of ​​the display panel, an additional transition frame may be added so that the first display area and the second display area are displayed simultaneously in the transition frame, which can further improve the display effect of different display areas during the display state change process when the effective display area of ​​the display panel changes, further improving the display effect of the display panel.

[0142] In some embodiments, continue to refer to Fig.12 , when the effective display area of ​​the display panel changes from the first display area to the second display area, when a frame of Data A+B is added between the MIPI TX waveform changing from Data A to Data B, within the frame, the first light-emitting start signal EIN1, the first scan start signal SIN1, the second light-emitting start signal EIN2, and the second scan start signal SIN2 are all valid signals, so that the first light-emitting control circuit outputs the first light-emitting control signal, the second light-emitting control circuit outputs the second light-emitting control signal, the first scan drive circuit outputs the first scan drive signal, and the second scan drive circuit outputs the second scan drive signal. At this time, the first pixel and the second pixel emit light according to the corresponding data signal, realizing the display of the first display area and the second display area.

[0143] In some embodiments, the effective display area includes a first display area and a second display area. When the refresh frequencies of the first display area and the second display area are different, the row period of the data signal can be adjusted according to the first refresh frequency of the first display area and the second refresh frequency of the second display area, so that the data signals of the first display area and the second display area can match the corresponding refresh frequencies, thereby realizing the frequency division display of the display panel and improving the display effect of the display panel. Specifically, based on the above technical solutions, the method also includes:

[0144] The row period of the current data signal is adjusted according to the first refresh frequency of the first display area and the second refresh frequency of the second display area.

[0145] Among them, the current data signal is a data signal corresponding to the first display area and the second display area. When the first refresh frequency and the second refresh frequency are equal, the line period of the current data signal corresponding to the first display area is equal to the line period of the current data signal corresponding to the second display area. When the first refresh frequency and the second refresh frequency are not equal, the line period of the current data signal can be adjusted so that the line period of the current data signal corresponding to the first display area matches the first refresh frequency, and the line period of the current data signal corresponding to the second display area matches the second refresh frequency, so that the display of the first display area and the second display area is realized when the first refresh frequency and the second refresh frequency are not equal, and the frequency division display of the first display area and the second display area is realized.

[0146] The first display area and the second display area are driven to display according to the current data signal.

[0147] After determining the line period of the current data signal corresponding to the first display area and the line period of the current data signal corresponding to the second display area, the first display area and the second display area are driven to display according to the current data signal, thereby realizing the frequency division display of the first display area and the second display area.

[0148] In some embodiments, the display panel also includes a first gate drive circuit and a second gate drive circuit; the first gate drive circuit is connected to the first pixel in the first display area, and the second gate drive circuit is connected to the second pixel in the second display area. In the effective display area, the first display area and the second display area are connected. When the refresh frequencies of the first display area and the second display area are different, the line periods of the first gate drive signal and the second gate drive signal can be synchronously adjusted so that the first gate drive signal and the second gate drive signal can match the corresponding refresh frequencies. At this time, the first pixel can work according to the first gate drive signal, and the second pixel can work according to the second gate drive signal, so as to realize the divided frequency display of the display panel. Specifically, on the basis of the above technical solution, the method also includes:

[0149] The row period of the first gate driving signal provided by the first gate driving circuit is adjusted according to the first refresh frequency of the first display area, and the row period of the second gate driving signal provided by the second gate driving circuit is adjusted according to the second refresh frequency of the second display area.

[0150] Wherein, when the first refresh frequency and the second refresh frequency are equal, the row period of the first gate drive signal can be adjusted to be equal to the row period of the second gate drive signal. When the first refresh frequency and the second refresh frequency are not equal, the row period of the first gate drive signal can be adjusted to match the first refresh frequency, and the row period of the second gate drive signal can be matched with the second refresh frequency, so that the first pixel and the second pixel can work normally when the first refresh frequency and the second refresh frequency are not equal, realizing the frequency division display of the first display area and the second display area. Exemplarily, the first gate drive signal and the second gate drive signal can be P-type scanning drive signals in the first pixel and the second pixel.

[0151] For example, Fig.18 A waveform diagram of a driving signal when different display areas of a display panel have different refresh frequencies is provided in an embodiment of the present invention. Among them, ScanP1 is a waveform diagram of a gate driving signal provided by a gate driving circuit (the gate driving signal corresponding to the first display area A is the first gate driving signal, and the gate driving signal corresponding to the second display area B is the second gate driving signal), and Source is a waveform diagram of a data signal output to the display area. Fig.18 As shown, when the first refresh frequency is greater than the second refresh frequency, the row period of the first gate driving signal is less than the row period of the second gate driving signal, and the row period of the data signal corresponding to the first display area A is less than the row period of the data signal corresponding to the second display area B. This allows the first pixel and the second pixel to work normally when the first refresh frequency and the second refresh frequency are not equal, thereby achieving frequency division display of the first display area A and the second display area B.

[0152] On the basis of the above technical solution, adjusting the row period of the current data signal according to the first refresh frequency of the first display area and the second refresh frequency of the second display area includes:

[0153] The row period of the current data signal is adjusted according to the first refresh frequency of the first display area, the second refresh frequency of the second display area, the first preset logic signal and the first preset logic operation.

[0154] Before adjusting the row period of the current data signal, the driving unit has a first preset logic signal. The driving unit can perform a first preset logic operation on the display data and the first preset logic signal according to the first refresh frequency and the second refresh frequency, so that the row period of the display data corresponding to the first display area matches the first refresh frequency. At the same time, the row period of the display data corresponding to the second display area matches the second refresh frequency, realizing the frequency division display of the first display area and the second display area. The first preset logic operation may include multiple logic operations to meet the operation requirements when the magnitude relationship between the first refresh frequency and the second refresh frequency is different.

[0155] In some embodiments, adjusting the row period of the first gate driving signal provided by the first gate driving circuit according to the first refresh frequency of the first display area, and adjusting the row period of the second gate driving signal provided by the second gate driving circuit according to the second refresh frequency of the second display area, comprises:

[0156] The row period of the first gate driving signal and the row period of the second gate driving signal are adjusted according to the first refresh frequency of the first display area, the second refresh frequency of the second display area, the second preset logic signal and the second preset logic operation.

[0157] Wherein, before adjusting the row period of the gate driving signal, there is a second preset logic signal in the driving unit. When the driving unit forms the driving signal according to the data transmission signal, the driving signal and the second preset logic signal can be subjected to a second preset logic operation according to the first refresh frequency and the second refresh frequency, so that the row period of the first gate driving signal in the gate driving signal matches the first refresh frequency, and the row period of the second gate driving signal in the gate driving signal matches the second refresh frequency, so as to realize the frequency division display of the first display area and the second display area. Wherein, the second preset logic operation can include multiple logic operations to meet the operation requirements when the magnitude relationship between the first refresh frequency and the second refresh frequency is different.

[0158] The embodiment of the present invention further provides a driving device of a display panel, which is used to drive the display panel to display. The display panel includes a first display area and a second display area. Fig.19 FIG. 1 is a schematic diagram of a structure of a driving device for a display panel provided by an embodiment of the present invention. Fig.19 As shown, the driving device includes:

[0159] A determination module 10, configured to determine a current effective display area of ​​the display panel according to a data transmission signal of a current frame when the effective display area of ​​the display panel changes; wherein the effective display area of ​​the display panel includes at least one of a first display area and a second display area;

[0160] The adjustment module 20 is used to adjust the gate driving signal and the display data according to the current effective display area, so that the gate driving signal and the display data are output to the current effective display area.

[0161] The technical solution of this embodiment is to set the display panel to include a first display area and a second display area, and then when the effective display area of ​​the display panel changes, the first determination module sends a signal according to the data of the current frame to determine the current effective display area of ​​the display panel, and then the adjustment module adjusts the gate drive signal and display data according to the current effective display area, so that the gate drive signal and display data are output to the current effective display area. Thus, a foldable display can be realized through a display panel, reducing the number of display panels and the number of drive chips required for the foldable display panel, and reducing the cost of the display panel.

[0162] In some embodiments, when the previous effective display area overlaps with the current effective display area, the adjusting module includes:

[0163] A determination unit, used for determining a difference display area according to a current effective display area and a previous effective display area;

[0164] The black insertion unit is used to perform black insertion of the first i frames of display data corresponding to the difference display area after the effective display area of ​​the display panel changes; wherein i is an integer greater than or equal to 1.

[0165] According to the technical solution of this embodiment, when the effective display area of ​​the display panel changes, the determination unit can determine the difference display area whose display state has changed based on the current effective display area and the previous effective display area, and then the black insertion unit inserts black for the first i frames of the display data corresponding to the difference display area, so that the display state change of the difference display area is transitioned through a black screen, thereby improving the display picture abnormality caused by the display state change of the difference display area and improving the display effect of the display panel.

[0166] In some embodiments, the driving device further comprises:

[0167] A first output module, configured to output a first data signal according to a data transmission signal of a current frame;

[0168] The first driving module is used to drive the current effective display area to display according to the first data signal.

[0169] In some embodiments, the determining unit includes:

[0170] A first determining subunit, configured to determine the difference display area to be the first display area when the last effective display area includes the first display area and the current effective display area is the second display area;

[0171] The second determining subunit is used to determine that the difference display area is the second display area when the previous effective display area includes the second display area and the current effective display area is the first display area.

[0172] Preferably, the black insertion unit comprises:

[0173] A first black insertion subunit is used for performing black insertion of the first i frames on the display data corresponding to the first display area when the difference display area is the first display area;

[0174] The second black insertion subunit performs black insertion of the previous i frames on the display data corresponding to the second display area when the difference display area is the second display area.

[0175] In some embodiments, when the previous effective display area does not overlap with the current effective display area, the driving device further includes:

[0176] A second output module, configured to output a second data signal according to a data transmission signal of a current frame; the second data signal includes a data signal of a first display area and a data signal of a second display area;

[0177] The second driving module is used to drive the first display area and the second display area to display according to the second data signal.

[0178] In some embodiments, the display panel further includes a first gate driving circuit and a second gate driving circuit; the first gate driving circuit is connected to the first pixel in the first display area, and the second gate driving circuit is connected to the second pixel in the second display area. The driving device further includes:

[0179] The control module is used to control the first gate driving signal provided by the first gate driving circuit and / or the second gate driving signal provided by the second gate driving circuit according to the current effective display area.

[0180] Preferably, the first gate driving circuit includes a first light emitting control circuit and a first scanning driving circuit; and the control module includes:

[0181] A first light-emitting control unit, configured to output a first light-emitting start signal to a first light-emitting control circuit according to a current effective display area;

[0182] The first scan control unit is used to output a first scan start signal to the first scan driving circuit according to the current effective display area.

[0183] Preferably, the second gate driving circuit includes a second light emitting control circuit and a second scanning driving circuit; and the control module includes:

[0184] A second light-emitting control unit, used for outputting a second light-emitting start signal to a second light-emitting control circuit according to a current effective display area;

[0185] The second scan control unit is used to output a second scan start signal to the second scan driving circuit according to the current effective display area.

[0186] In some embodiments, the effective display area includes a first display area and a second display area; the driving device further includes:

[0187] A first adjustment module, used for adjusting a line period of a current data signal according to a first refresh frequency of the first display area and a second refresh frequency of the second display area;

[0188] The third driving module is used to drive the first display area and the second display area to display according to the current data signal.

[0189] Preferably, the display panel further includes a first gate driving circuit and a second gate driving circuit; the first gate driving circuit is connected to the first pixel in the first display area, and the second gate driving circuit is connected to the second pixel in the second display area. The driving device also includes:

[0190] The second adjustment module is used to adjust the line period of the first gate driving signal provided by the first gate driving circuit according to the first refresh frequency of the first display area, and adjust the line period of the second gate driving signal provided by the second gate driving circuit according to the second refresh frequency of the second display area.

[0191] Based on the above technical solutions, the first adjustment module is specifically used to adjust the line period of the current data signal according to the first refresh frequency of the first display area, the second refresh frequency of the second display area, the first preset logic signal and the first preset logic operation.

[0192] Based on the above technical solutions, the second adjustment module is specifically used to adjust the row period of the first gate drive signal and the row period of the second gate drive signal according to the first refresh frequency of the first display area, the second refresh frequency of the second display area, the second preset logic signal and the second preset logic operation.

[0193] On the basis of the above technical solutions, the driving device further includes:

[0194] The acquisition module is used to acquire the data transmission signal of the current frame based on the frame synchronization signal when the effective display area of ​​the display panel changes.

[0195] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for driving a display panel, characterized in that: The display panel includes a first display area and a second display area; and the driving method of the display panel includes: When the effective display area of ​​the display panel changes, a signal is sent according to the data of the current frame to determine the current effective display area of ​​the display panel; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area; The gate driving signal and the display data are adjusted according to the current effective display area, so that the gate driving signal and the display data are output to the current effective display area.

2. The method for driving a display panel according to claim 1, wherein: When the last effective display area overlaps with the current effective display area, adjusting the display data according to the current effective display area includes: Determine a difference display area according to the current effective display area and the previous effective display area; After the effective display area of ​​the display panel changes, the display data corresponding to the difference display area is black-inserted for the first i frames; wherein i is an integer greater than or equal to 1.

3. The method for driving a display panel according to claim 2, wherein: After performing black insertion on the display data corresponding to the difference display area for the first i frames, the method further includes: Outputting a first data signal according to the data transmission signal of the current frame; The current effective display area is driven to display according to the first data signal.

4. The method for driving a display panel according to claim 2, wherein: Determining a difference display area according to the current effective display area and the previous effective display area includes: When the previous effective display area includes the first display area and the current effective display area is the second display area, determining that the difference display area is the first display area; When the previous effective display area includes the second display area and the current effective display area is the first display area, determining the difference display area to be the second display area; Preferably, performing black insertion of the first i frames on the display data corresponding to the difference display area includes: When the difference display area is the first display area, performing black insertion of the first i frames on the display data corresponding to the first display area; When the difference display area is the second display area, black insertion of the first i frames is performed on the display data corresponding to the second display area.

5. The method for driving a display panel according to claim 1, wherein: When the last valid display area does not overlap with the current valid display area, adjusting the display data according to the current valid display area includes: Outputting a second data signal according to the data transmission signal of the current frame; the second data signal includes the data signal of the first display area and the data signal of the second display area; The first display area and the second display area are driven to display according to the second data signal.

6. The method for driving a display panel according to claim 1, wherein: The display panel further includes a first gate driving circuit and a second gate driving circuit; the first gate driving circuit is connected to a first pixel in the first display area, and the second gate driving circuit is connected to a second pixel in the second display area; Adjusting the gate drive signal according to the current effective display area includes: Controlling the first gate driving circuit to provide a first gate driving signal and / or the second gate driving circuit to provide a second gate driving signal according to the current effective display area; Preferably, the first gate driving circuit includes a first light emitting control circuit and a first scanning driving circuit; controlling the first gate driving circuit to provide a first gate driving signal according to the current effective display area includes: Outputting a first light-emitting start signal to the first light-emitting control circuit according to the current effective display area; Outputting a first scan start signal to the first scan driving circuit according to the current effective display area; Preferably, the second gate driving circuit includes a second light emitting control circuit and a second scanning driving circuit; controlling the second gate driving circuit to provide a second gate driving signal according to the current effective display area includes: Outputting a second light-emitting start signal to the second light-emitting control circuit according to the current effective display area; A second scan start signal is output to the second scan driving circuit according to the current effective display area.

7. The method for driving a display panel according to any one of claims 1 to 6, characterized in that: The effective display area includes the first display area and the second display area; the method further includes: adjusting a line period of a current data signal according to a first refresh frequency of the first display area and a second refresh frequency of the second display area; Driving the first display area and the second display area to display according to the current data signal; Preferably, the display panel further includes a first gate driving circuit and a second gate driving circuit; the first gate driving circuit is connected to a first pixel in the first display area, and the second gate driving circuit is connected to a second pixel in the second display area; the method further includes: The row period of the first gate driving signal provided by the first gate driving circuit is adjusted according to the first refresh frequency of the first display area, and the row period of the second gate driving signal provided by the second gate driving circuit is adjusted according to the second refresh frequency of the second display area.

8. The method for driving a display panel according to claim 7, wherein: Adjusting the line period of the current data signal according to the first refresh frequency of the first display area and the second refresh frequency of the second display area includes: adjusting a row period of the current data signal according to a first refresh frequency of the first display area, a second refresh frequency of the second display area, a first preset logic signal, and a first preset logic operation; Preferably, adjusting the row period of the first gate driving signal provided by the first gate driving circuit according to the first refresh frequency of the first display area, and adjusting the row period of the second gate driving signal provided by the second gate driving circuit according to the second refresh frequency of the second display area, comprises: The row period of the first gate driving signal and the row period of the second gate driving signal are adjusted according to the first refresh frequency of the first display area, the second refresh frequency of the second display area, the second preset logic signal and the second preset logic operation.

9. The method for driving a display panel according to claim 1, wherein: Before determining the current effective display area of ​​the display panel according to the data sending signal of the current frame, the method further includes: When the effective display area of ​​the display panel changes, the data transmission signal of the current frame is acquired based on the frame synchronization signal.

10. A driving device for a display panel, characterized in that: The display panel includes a first display area and a second display area; and the driving device of the display panel includes: a first determining module, configured to determine a current effective display area of ​​the display panel according to a data transmission signal of a current frame when the effective display area of ​​the display panel changes; wherein the effective display area of ​​the display panel includes at least one of the first display area and the second display area; The regulating module is used for regulating the gate driving signal and the display data according to the current effective display area, so that the gate driving signal and the display data are output to the current effective display area.

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