Display panel, display device and driving method of display panel

Abstract

The invention discloses a display panel, a display device and a driving method of the display panel, belongs to the technical field of display, and can solve the problem that an obvious brightness boundary is easy to appear when an existing display panel is subjected to partitioned variable-frequency display. The display panel has a display area, and the display panel comprises: a plurality of pixel units (101) arranged in an array in the display area; the display area is divided into a first dynamic refresh area (A1), a second dynamic refresh area (A2) and at least one first transition refresh area (B1) between the first dynamic refresh area (A1) and the second dynamic refresh area (A2); the refresh frequency of the pixel units (101) in the first dynamic refresh area (A1) is different from the refresh frequency of the pixel units (101) in the second dynamic refresh area (A2); the refresh frequency of the pixel units (101) in each first transition refresh area (B1) is between the refresh frequency of the pixel units (101) in the first dynamic refresh area (A1) and the refresh frequency of the pixel units (101) in the second dynamic refresh area (A2).

Description

Display panel, display device, and display panel driving method Technical Field

[0001] The present disclosure belongs to the field of display technology, and particularly relates to a display panel, a display device, and a method for driving the display panel. Background Art

[0002] With consumers demanding the ultimate in power-efficient displays, low-temperature polycrystalline silicon oxide (LTPO) display panels have been designed. These panels can achieve low refresh rates, as low as 1Hz, effectively reducing power consumption. Many manufacturers are now proposing zoned frequency conversion solutions, where a display panel is divided into several zones, each with a different refresh rate. Zoned frequency conversion allows refresh zones to update while non-refresh zones remain unchanged, enabling more intelligent refresh rates and greater power savings.

[0003] Currently, frequency conversion is primarily achieved by controlling whether gate drive signals enter the pixel circuits, limiting the minimum refresh rate to an entire row of pixel circuits. However, dividing the display panel into several refresh zones makes it difficult to maintain consistent optical parameters between high- and low-refresh-rate pixel circuits in adjacent areas. This can result in a noticeable brightness boundary, affecting display quality.

[0004] Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides a display panel, a display device, and a method for driving the display panel.

[0006] In a first aspect, an embodiment of the present disclosure provides a display panel, wherein the display panel has a display area, and the display panel includes: a plurality of pixel units arranged in an array in the display area;

[0007] The display area is divided into a first dynamic refresh area and a second dynamic refresh area, and at least one first transition refresh area between the first dynamic refresh area and the second dynamic refresh area;

[0008] A refresh frequency of the pixel units in the first dynamic refresh area is different from a refresh frequency of the pixel units in the second dynamic refresh area;

[0009] The refresh frequency of the pixel units in each of the first transition refresh areas is between the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area;

[0010] The number of rows of pixel units in the first transition refresh area is at least smaller than the number of rows of pixel units in the first dynamic refresh area and the number of rows of pixel units in the second dynamic display area.

[0011] Optionally, a refresh frequency of the pixel units in the first dynamic refresh area is greater than a refresh frequency of the pixel units in the second dynamic refresh area.

[0012] Optionally, the refresh frequency of the pixel units in each of the first transition refresh zones gradually decreases along the direction from the first dynamic refresh zone to the second dynamic refresh zone.

[0013] Optionally, the display area is further divided into a static holding area and at least one second transition refresh area between the second dynamic refresh area and the static holding area;

[0014] The refresh frequency of the pixel unit in the static holding area is 1 Hz;

[0015] The refresh frequencies of the pixel units in the at least one second transition refresh zone are between the refresh frequencies of the pixel units in the second dynamic refresh zone and the static holding zone.

[0016] Optionally, the refresh frequency of the pixel units in each of the second transition refresh zones gradually decreases along the direction from the second dynamic refresh zone to the static holding zone.

[0017] Optionally, the display panel further comprises a peripheral area disposed on at least one side of the display area, and the display panel further comprises: a plurality of shift registers and a gating circuit located in the peripheral area; each of the shift registers is connected to a row of pixel units via the gating circuit; the gating circuit comprises: a signal generating subcircuit, a correction subcircuit, and an output subcircuit;

[0018] The shift register is configured to output the gate drive signal step by step according to a preset timing sequence;

[0019] The signal generating subcircuit is configured to generate a gating signal according to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area;

[0020] The correction subcircuit is configured to correct the strobe signal according to the refresh frequency of the pixel unit in the first transition refresh area;

[0021] The output sub-circuit is configured to input the gate driving signal into the corresponding pixel unit under the control of the modified selection signal.

[0022] Optionally, the correction subcircuit is specifically configured to:

[0023] According to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area, obtaining the number of frames between jumps of the strobe signals corresponding to the first dynamic refresh area and the second dynamic refresh area;

[0024] According to the number of frames between which the strobe signals corresponding to the first dynamic refresh area and the second dynamic refresh area jump, the number of frames between which the strobe signal corresponding to the first transition refresh area jumps is acquired;

[0025] The strobe signal is modified according to the number of frames between jumps of the strobe signal corresponding to the first transition refresh area.

[0026] Optionally, the number of frames between which the strobe signal corresponding to the first transition refresh zone jumps is between the number of frames between which the strobe signal corresponding to the first dynamic refresh zone jumps and the number of frames between which the strobe signal corresponding to the second dynamic refresh zone jumps.

[0027] Optionally, the number of frames between jumps of the selection signals corresponding to the first transition refresh zones gradually increases from the first dynamic refresh zone to the second dynamic refresh zone.

[0028] Optionally, the signal generating subcircuit is further configured to generate a gating signal according to a refresh frequency of the pixel unit in the static holding area;

[0029] The correction subcircuit is further configured to correct the selection signal according to the refresh frequency of the pixel unit in the second transition refresh area.

[0030] Optionally, the correction sub-circuit is further configured to:

[0031] According to the refresh frequency of the pixel unit in the static holding area, obtaining the number of frames between jumps of the strobe signal corresponding to the static holding area;

[0032] According to the number of frames between which the strobe signal corresponding to the second dynamic refresh area and the static hold area jumps, obtaining the number of frames between which the strobe signal corresponding to the second transition refresh area jumps;

[0033] The strobe signal is modified according to the number of frames between jumps of the strobe signal corresponding to the second transition refresh zone.

[0034] Optionally, the number of frames between which the strobe signal corresponding to the second transition refresh zone jumps is between the number of frames between which the strobe signal corresponding to the second dynamic refresh zone and the static hold zone jumps.

[0035] Optionally, the number of frames between jumps of the selection signals corresponding to the second transition refresh zones gradually increases in a direction from the second dynamic refresh zone to the static holding zone.

[0036] Optionally, at the end of a display cycle, the selection signal corresponding to the static holding area is forced to jump once.

[0037] In a second aspect, an embodiment of the present disclosure provides a display device, wherein the display device includes the display panel provided as described above.

[0038] In a third aspect, an embodiment of the present disclosure provides a method for driving a display panel, for driving the display panel provided above, wherein the method for driving the display panel includes:

[0039] According to the preset timing, the gate drive signal is output step by step;

[0040] generating a gating signal according to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area;

[0041] modifying the strobe signal according to the refresh frequency of the pixel unit in the first transition refresh area;

[0042] Under the control of the modified gate signal, the gate driving signal is input into the corresponding pixel unit.

[0043] Optionally, under the control of the modified gate signal, the gate driving signal is input into the corresponding pixel unit, and the method further includes:

[0044] generating a gating signal according to a refresh frequency of the pixel units in the second dynamic refresh area and the static holding area;

[0045] The selection signal is modified according to the refresh frequency of the pixel unit in the second transition refresh area. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] FIG1 is a schematic structural diagram of an exemplary display panel.

[0047] FIG. 2 is a schematic structural diagram of an exemplary pixel circuit in the display panel shown in FIG. 1 .

[0048] FIG. 3 is a schematic diagram showing brightness of various regions of the display panel shown in FIG. 1 .

[0049] FIG4 is a schematic structural diagram of a display panel provided in an embodiment of the present disclosure.

[0050] FIG. 5A is a schematic structural diagram of a gating circuit in the display panel shown in FIG. 4 .

[0051] FIG. 5B is a schematic structural diagram of another gating circuit in the display panel shown in FIG. 4 .

[0052] FIG6 is a schematic diagram of frequency changes in a display panel provided by an embodiment of the present disclosure.

[0053] FIG. 7 is a schematic diagram of a strobe signal transition in a display panel provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0055] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0056] Because LTPO display panels can achieve ultra-high refresh rate displays, they are currently widely used in various fields. Figure 1 is a schematic diagram of the structure of an exemplary display panel. As shown in Figure 1, the display panel has a display area and a side peripheral area arranged on at least one side of the display area. The display panel includes: a plurality of pixel units 101 arranged in an array in the display area, a plurality of shift registers 102 and a gating circuit 103 in the peripheral area; each shift register 102 is connected to a row of pixel units 101 through the gating circuit 103.

[0057] The display area is divided into a first dynamic refresh area A1, a second dynamic refresh area A2 and a static holding area A3, wherein the refresh frequency of the pixel unit 101 in the first dynamic display area A1 can be 120Hz, which can maintain high-frequency refresh, the refresh frequency of the pixel unit 101 in the second dynamic display area A2 can be 40Hz, which can maintain low-frequency refresh, and the refresh frequency of the pixel unit 101 in the static holding area A3 can be 1Hz, which can make the display image remain unchanged within a display cycle, thereby realizing partitioned variable frequency display to save energy. It should be noted that a display cycle here can specifically be 1 second, the first dynamic display area A1 can display 120 frames of display images within 1 second, the second dynamic display area A2 can display 40 frames of display images within 1 second, and the static holding area A3 can display 1 frame of display images within 1 second.

[0058] The pixel unit 101 is provided with a pixel circuit, which can adopt a 7T1C (7 thin-film transistors and 1 storage capacitor) or 8T1C (8 thin-film transistors and 1 storage capacitor) circuit structure. Because the 8T1C circuit structure has a third initial refresh signal for adjustment, it has better frequency switching performance and can avoid flickering. Therefore, the 8T1C circuit structure is generally used.

[0059] Figure 2 is a structural schematic diagram of an exemplary pixel circuit in the display panel described in Figure 1. As shown in Figure 2, the pixel circuit includes: a first initialization transistor T1, a threshold compensation transistor T2, a driving transistor T3, a data writing transistor T4, a first light-emitting control transistor T5, a second light-emitting control transistor T6, a second initialization transistor T7, a third initialization transistor T8, a storage capacitor Cst and a light-emitting device OLED.

[0060] The gate of the driving transistor T3 is connected to the first node N1, the source is connected to the second node N2, and the drain is connected to the third node N3. The gate of the data writing transistor T4 is connected to the scan signal line Gate-P, the source is connected to the data signal line Vdata, and the drain is connected to the second node N2. The gate of the threshold compensation transistor T2 is connected to the threshold compensation signal Gate-N, the source is connected to the third node N3, and the drain is connected to the first node N1. One end of the storage capacitor Cst is connected to the first node N1, and the other end is connected to the first power signal line VDD. The gate of the first emission control transistor T5 is connected to the emission control signal line EM, the source is connected to the first power signal line VDD, and the drain is connected to the second node N2. The gate of the second emission control transistor T6 is connected to the emission control signal line EM, the source is connected to the third node N3, and the drain is connected to the anode of the light-emitting device OLED. The gate of the first initialization transistor T1 is connected to the first reset signal line N-Rreset, the source is connected to the first initialization signal line Vinit1, and the drain is connected to the third node N3. The second initialization transistor T7 has a gate connected to the second reset signal line P-Reset, a source connected to the second initialization signal line Vinit2, and a drain connected to the anode of the light-emitting device OLED. The third initialization transistor T8 has a gate connected to the third reset signal line H-Reset, a source connected to the third initialization signal line Vinit3, and a drain connected to the second node N2. The anode of the light-emitting device OLED is connected to the drain of the second emission control transistor T6, and the cathode is connected to the second power supply signal line VSS.

[0061] The first initialization transistor T1 and the threshold compensation transistor T2 are N-type transistors, for example, N-type metal oxide thin film transistors (MOSTs). MOSTs have low leakage current, thereby preventing leakage of the first node N through the threshold compensation transistor T2 during the light-emitting phase. Meanwhile, the drive transistor T3, the data write transistor T4, the first emission control transistor T5, the second emission control transistor T6, the second initialization transistor T7, and the third initialization transistor T8 are P-type transistors, for example, P-type low-temperature polysilicon thin film transistors (LTPS). LTPSs have high carrier mobility, thereby facilitating the realization of display panels with high resolution, high response speed, high pixel density, and high aperture ratio. The first initialization signal line Vinit1, the second initialization signal line Vinit2, and the third initialization signal line Vinit3 can output the same or different voltage signals depending on actual conditions.

[0062] During the data writing and threshold compensation phase, the data writing transistor T4 and the threshold compensation transistor T2 are turned on, allowing the data signal and the threshold voltage of the driving transistor T3 to be written to the first node N1, i.e., the gate of the driving transistor T3. The brightness of the light-emitting device OLED can be adjusted by controlling the gate opening degree of the driving transistor T3. For each row of pixel units 101, each time the light-emitting device OLED emits light, it is considered a refresh. The gate drive signals for the data writing transistor T4 and the threshold compensation transistor T2 can be provided by the first gate drive circuit Pgate GOA and the second gate drive circuit Ngate GOA, respectively. In practical applications, the gate circuit 103 can be used to control whether the gate drive signal is input to the row of pixel units 101 to achieve control of the refresh frequency. For example, by controlling the gate drive signal provided by the second gate drive circuit Ngate GOA to be input to the corresponding row of pixel units 101, the light-emitting device OLED in the row of pixel units 101 emits light once, and the row of pixel units 101 is refreshed once.

[0063] Although the transistors in the LTPO display panel can maintain the data voltage well and achieve low-frequency display, in actual applications, some transistors in the LTPO display panel still have slight leakage, resulting in different brightness among the first dynamic refresh area A1, the second dynamic refresh area A2 and the static holding area A3 (the brightness diagram is shown in Figure 3). Due to the large brightness difference at the boundary, there is an obvious brightness dividing line problem, which affects the display effect.

[0064] In order to solve at least one of the above-mentioned technical problems, the embodiments of the present disclosure provide a display panel, a display device and a driving method for the display panel. The display panel, the display device and the driving method for the display panel provided by the embodiments of the present disclosure will be further described in detail below in combination with the accompanying drawings and specific embodiments.

[0065] Figure 4 is a structural schematic diagram of a display panel provided by an embodiment of the present disclosure. As shown in Figure 4, the display panel has a display area, and the display panel includes: a plurality of pixel units 101 arranged in an array in the display area; the display area is divided into a first dynamic refresh area A1 and a second dynamic refresh area A2, and at least one first transition refresh area B1 between the first dynamic refresh area A1 and the second dynamic refresh area A2; the refresh frequency of the pixel unit 101 in the first dynamic refresh area A1 is different from the refresh frequency of the pixel unit 101 in the second dynamic refresh area A2; the refresh frequency of the pixel unit 101 in each first transition refresh area B1 is between the refresh frequency of the pixel unit 101 in the first dynamic refresh area A1 and the second dynamic refresh area A2.

[0066] The refresh rate of the pixel units 101 in the first dynamic display area A1 can be 120 Hz, which can maintain a high refresh rate, and the refresh rate of the pixel units 101 in the second dynamic display area A2 can be 40 Hz, which can maintain a low refresh rate. It is understood that the refresh rates of the pixel units 101 in the first dynamic display area A1 and the second dynamic display area A2 can also be set to other values, which are not listed here one by one.

[0067] One or more first transition refresh zones B1 may be provided at the boundary between the first dynamic display area A1 and the second dynamic display area A2. The refresh frequency of the pixel units 101 in each first transition refresh zone B1 is between the refresh frequency of the pixel units 101 in the first dynamic refresh area A1 and the second dynamic refresh area A2. In the embodiment disclosed herein, one first transition refresh zone B1 will be used as an example for explanation. The number of rows of pixel units 101 in the first transition refresh zone B1 is at least less than the number of rows of pixel units 101 in the second dynamic display area A2. For example, the number of rows of pixel units 101 in the first transition refresh zone B1 is between one-fiftieth and one-three-hundredth of the number of rows of pixel units 101 in the second dynamic display area A2. For example, 5 rows, 10 rows, etc. The number of rows of pixel units 101 in the first transition refresh zone B1 is much less than the number of rows of pixel units 101 in the first dynamic display area A1 and the second dynamic display area A2. With this design, the number of rows of pixel units 101 in the first transition refresh area B1 cannot exceed the number of rows of pixel units 101 in the first dynamic display area A1 and the second dynamic display area A2 to avoid affecting the normal display image.

[0068] In the display panel provided by the embodiment of the present disclosure, at least one first transition refresh zone B1 with a refresh frequency between the first dynamic refresh zone A1 and the second dynamic refresh zone A2 is provided. This can prevent the appearance of an obvious boundary area between the first dynamic refresh zone A1 and the second dynamic refresh zone A2, thereby reducing the brightness difference between the two adjacent areas. Therefore, the problem of an obvious brightness dividing line can be avoided, thereby improving the display effect of the display panel and improving the user experience.

[0069] Specifically, the refresh frequency of the pixel units 101 in the first dynamic refresh area A1 is greater than the refresh frequency of the pixel units 101 in the second dynamic refresh area A2.

[0070] The refresh rate of the pixel units 101 in the first dynamic refresh area A can be the highest refresh rate of the entire display panel, such as 120 Hz, to maintain a high refresh rate display. The refresh rate of the pixel units 101 in the second dynamic refresh area A2 can be a low refresh rate, such as 40 Hz, to maintain a low refresh rate display. This allows low refresh rate display when high refresh rate display is not necessary, thereby saving energy consumption.

[0071] In some embodiments, the refresh frequency of the pixel units 101 in each first transition refresh area B1 gradually decreases from the first dynamic refresh area A1 to the second dynamic refresh area A2.

[0072] When there are multiple first transition refresh zones B1, the refresh frequencies of the pixel units 101 in each first transition refresh zone B1 may also be different. Specifically, the refresh frequencies of the pixel units 101 in each first transition refresh zone B1 gradually decrease from the first dynamic refresh zone A1 to the second dynamic refresh zone A2. This allows the brightness of each first transition refresh zone B1 to change slowly, further reducing the brightness difference between two adjacent areas. This avoids the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and the user experience. For example, if there are three first transition refresh zones B1, the refresh frequencies of the pixel units 101 in the three first transition refresh zones B1 may be 90 Hz, 60 Hz, and 50 Hz, respectively.

[0073] In some embodiments, the display area is further divided into a static holding area A3 and at least one second transition refresh area B2 between the second dynamic refresh area A2 and the static holding area A3; the refresh frequency of the pixel unit 101 in the static holding area A3 is 1 Hz; the refresh frequency of the pixel unit 101 in at least one second transition refresh area B2 is between the refresh frequencies of the pixel units 101 in the second dynamic refresh area A2 and the static holding area A3.

[0074] The refresh frequency of the pixel units 101 in the static holding area A3 is 1 Hz. The static holding area A3 can display one frame of display image within one second, so as to further save energy consumption.

[0075] At least one second transition refresh zone B2 with a refresh frequency between the second dynamic refresh zone A2 and the static holding zone A3 is set between the second dynamic refresh zone A2 and the static holding zone A3, which can prevent the appearance of an obvious dividing area between the second dynamic refresh zone A2 and the static holding zone A3, so that the brightness difference between the two adjacent areas is weakened, thereby avoiding the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and improving the user experience.

[0076] In some embodiments, the refresh frequency of the pixel units 101 in each second transition refresh zone B2 gradually decreases from the second dynamic refresh zone A2 to the static holding zone A3.

[0077] When there are multiple second transition refresh zones B2, the refresh frequencies of the pixel units 101 in each second transition refresh zone B2 may also be different. Specifically, the refresh frequencies of the pixel units 101 in each second transition refresh zone B2 gradually decrease from the second dynamic refresh zone A2 to the static hold zone A3. This allows the brightness of each second transition refresh zone B2 to change slowly, further reducing the brightness difference between two adjacent areas. This avoids the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and the user experience. For example, if there are four second transition refresh zones B2, the refresh frequencies of the pixel units 101 in the four second transition refresh zones B2 may be 30 Hz, 20 Hz, 10 Hz, and 6 Hz, respectively.

[0078] It should be noted here that in the subsequent description, the example will be taken as follows: the number of first transition refresh zones B1 is 1, and its refresh frequency is 60Hz; the number of second transition refresh zones is 4, and their refresh frequencies are 30Hz, 20Hz, 10Hz and 6Hz respectively.

[0079] In some embodiments, as shown in Figure 4, the display panel further has a peripheral area arranged on at least one side of the display area, and the display panel also includes: multiple shift registers 102 and a gating circuit 103 located in the peripheral area; each shift register 102 is connected to a row of pixel units 101 through the gating circuit 103.

[0080] In some embodiments, the shift register 102 is a second gate drive circuit Ngate GOA, one end of the selection circuit 103 is connected to the second gate drive circuit Ngate GOA, and the other end is connected to the gate of the threshold compensation transistor T2 in the pixel circuit of the corresponding row pixel unit 101; of course, in other embodiments, the shift register 102 is a first gate drive circuit Pgate GOA and a second gate drive circuit Ngate GOA, one end of the selection circuit 103 is connected to the first gate drive circuit Pgate GOA and the second gate drive circuit Ngate GOA, and the other end is connected to the gate of the data writing transistor T4 and the threshold compensation transistor T2 in the pixel circuit of the corresponding row pixel unit 101.

[0081] It is understood that the gating circuit 103 can be a switching transistor. As shown in FIG5A , the gating circuit 103 includes a gating transistor Tx, one end of which is connected to the second gate drive circuit Ngate GOA, and the other end of which is connected to the first node N1 in the corresponding pixel unit 101, for example, the gate of the threshold compensation transistor T2 and the gate of the data writing transistor T4 in the pixel circuit of the corresponding row of pixel units 101. The gate of the gating transistor Tx is connected to a gating signal GE (General Control, GE). The gating transistor Tx can transmit the gate drive signal of the shift register 102 to the corresponding row of pixel units 101 under the control of the corresponding gating signal GE.

[0082] In some embodiments, as shown in Figures 4 and 5A, a general control (GE) signal that controls the on / off switching of the gating circuit 103 can be provided by a driver integrated circuit (DIC), which can be electrically connected to the display panel processor via a flexible printed circuit (FPC). The GE signal is pulled high or low to control the GOA signal entering the pixel circuit of the corresponding row of pixel units 101, thereby controlling the data refresh rate.

[0083] In some embodiments, since the refresh rate is changing, the strobe signal also needs to change. However, the shape of the strobe signal cannot be predicted in advance, so the frequency transition band and ultra-low frequency issues cannot be solved by presetting. Therefore, the following solution is proposed.

[0084] In some embodiments, FIG5B is another structural schematic diagram of the gating circuit in the display panel shown in FIG4 . As shown in FIG5B , the gating circuit 103 may further include: a gating signal circuit, which includes: a signal generating subcircuit 1031, a correction subcircuit 1032, and an output subcircuit 1033. The gating signal circuit can correct the gating signal to obtain a corrected gating signal, and then control the gate drive signal to enter the pixel circuit of the pixel unit 101 of the corresponding row, thereby controlling the data refresh frequency. The gating signal circuit can be integrated into the DIC or into the gating circuit 103. Of course, it can be understood that in some embodiments, as shown in combination with FIG5A and FIG5B , the output subcircuit 1033 of the gating signal circuit can be connected to the gate of the gating transistor Tx.

[0085] The shift register 102 is configured to output the gate drive signal step by step according to a preset timing; the signal generating sub-circuit 1031 is configured to generate a selection signal according to the refresh frequency of the pixel unit 101 in the first dynamic refresh area A1 and the second dynamic refresh area A2; the correction sub-circuit 1032 is configured to correct the selection signal according to the refresh frequency of the pixel unit 101 in the first transition refresh area B1; the output sub-circuit 1033 is configured to input the gate drive signal into the corresponding pixel unit under the control of the corrected selection signal.

[0086] A timing controller (not shown) in the display panel can provide timing signals to each shift register 102, causing each shift register 102 to output a gate drive signal in a step-by-step manner to refresh each row of pixel units 102. The signal generation subcircuit 1031 can provide a strobe signal. However, conventional strobe signals only control the gate drive signals provided by each shift register 102 based on the refresh frequency of the pixel units 101 in the first dynamic refresh area A1 and the second dynamic refresh area A2, and cannot meet the refresh frequency requirements of the pixel units 101 in the first transition refresh area B1. The correction subcircuit 1032 can correct the strobe signal so that the strobe signal meets the refresh frequency requirements of the pixel units 101 in the first dynamic refresh area A1 and the second dynamic refresh area A2, as well as the refresh frequency requirements of the pixel units 101 in the first transition refresh area B1. The output subcircuit 1033 can input the gate drive signal to the corresponding pixel unit under the control of the corrected strobe signal. In this way, the refresh rate of each area can meet the requirements, and the brightness difference between two adjacent areas can be reduced, thereby avoiding the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and enhancing the user experience.

[0087] In some embodiments, the correction subcircuit 1032 is specifically configured to obtain the number of frames between which the selection signals corresponding to the first dynamic refresh area A1 and the second dynamic refresh area A2 jump according to the refresh frequency of the pixel units in the first dynamic refresh area A1 and the second dynamic refresh area A2; obtain the number of frames between which the selection signal corresponding to the first transition refresh area B1 jumps according to the number of frames between which the selection signal corresponding to the first dynamic refresh area A1 and the second dynamic refresh area A2 jumps; and correct the selection signal according to the number of frames between which the selection signal corresponding to the first transition refresh area A1 jumps.

[0088] Taking the refresh rates of the pixel units in the first dynamic refresh area A1 and the second dynamic refresh area A2 as examples, where the refresh rates are 120 Hz and 40 Hz, respectively, as shown in FIG5 , when the data signal for the first frame of the display image is input, each row of pixel units 101 in the display panel is refreshed once, and the strobe signals corresponding to each area are all low-level signals. The first dynamic refresh area A1 maintains a high refresh rate of 120 Hz, and its corresponding strobe signal maintains a low-level state, with the number of frames between transitions being 0. The second dynamic refresh area A2 maintains a low refresh rate of 40 Hz, and its corresponding strobe signal transitions every two frames. The number of frames between which the selection signal corresponding to the first transition refresh zone B1 jumps can be adjusted to be between the number of frames between which the selection signal corresponding to the first dynamic refresh zone A1 and the second dynamic refresh zone A2 jumps, and the selection signal is corrected so that the selection signal can meet the refresh frequency requirements of the pixel unit 101 in the first transition refresh zone B1. In this way, the refresh frequency of each area can meet the requirements, and the brightness difference between the two adjacent areas is reduced, thereby avoiding the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and improving the user experience. In some embodiments, the number of frames between which the selection signal corresponding to each first transition refresh zone B1 jumps gradually increases from the first dynamic refresh zone A1 to the second dynamic refresh zone A2.

[0089] When there are multiple first transition refresh zones B1, the number of frames between which the selection signals corresponding to each first transition refresh zone B1 jump may also be different. Specifically, the number of frames between which the selection signals corresponding to each first transition refresh zone B1 jump gradually increases from the first dynamic refresh zone A1 to the second dynamic refresh zone A2. This allows the brightness of each first transition refresh zone B1 to change slowly, further reducing the brightness difference between two adjacent areas. This avoids the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and enhancing the user experience. In some embodiments, the signal generation subcircuit 1031 is further configured to generate a selection signal based on the refresh frequency of the pixel unit in the static holding zone A3; the correction subcircuit 1032 is further configured to correct the selection signal based on the refresh frequency of the pixel unit in the second transition refresh zone B2.

[0090] The refresh rate of the pixel units in the static holding area A3 is 1 Hz. As shown in FIG6 , when the data signal of the first display frame is input, each row of pixel units 101 in the display panel is refreshed once, and the strobe signals corresponding to each area are all low-level signals. The static holding area A3 maintains a static display state, and its corresponding strobe signal remains high-level. The number of frames between its transitions is 119. The second dynamic refresh area A2 maintains a low refresh rate of 40 Hz, and its corresponding strobe signal transitions every two frames. The number of frames between transitions of the strobe signal corresponding to the second transition refresh area B2 can be adjusted to be between the number of frames between transitions of the strobe signals corresponding to the second dynamic refresh area A2 and the static holding area A3. The strobe signal is then modified so that it meets the refresh rate requirements of the pixel units 101 in the second transition refresh area B2. This ensures that the refresh rate of each area meets the requirements, reduces the brightness difference between adjacent areas, and thus avoids the problem of a clear brightness dividing line. This improves the display quality of the display panel and enhances the user experience.

[0091] When there are multiple second transition refresh zones B2, the number of frames between which the selection signals corresponding to the respective second transition refresh zones B2 jump may also be different. Specifically, the number of frames between which the selection signals corresponding to the respective second transition refresh zones B2 jump gradually increases along the direction from the second dynamic refresh zone A2 to the static hold zone A3. This allows the brightness of the respective second transition refresh zones B2 to change slowly, further reducing the brightness difference between the two adjacent areas. This avoids the problem of an obvious brightness dividing line, thereby improving the display effect of the display panel and the user experience. For example, if there are four second transition refresh zones B2, the number of frames between which the selection signals corresponding to the four second transition refresh zones B2 jump may be 3, 5, 11, and 19, respectively.

[0092] In some embodiments, as shown in FIG6 , the first transition refresh zone B1 may include multiple refresh frequencies, and the second transition refresh zone B2 may include multiple refresh frequencies; wherein the number of refresh frequencies in the first transition refresh zone B1 is less than the number of refresh frequencies included in the second transition refresh zone B2, and the amplitude of the decrease in the refresh frequency of the first transition refresh zone B1 is greater than the amplitude of the decrease in the refresh frequency of the second transition refresh zone B2. For example: the number of first transition refresh zones B1 is 3, and the refresh frequencies of the pixel units 101 in the 3 first transition refresh zones B1 can be 100 Hz, 80 Hz, and 60 Hz, respectively, with a refresh frequency decrease amplitude of approximately 20 Hz; the number of second transition refresh zones B2 is 4, and the refresh frequencies of the pixel units 101 in the 4 first transition refresh zones B1 can be 30 Hz, 20 Hz, and 6 Hz, respectively, with a refresh frequency decrease amplitude of approximately 10 Hz. Such a design can reduce the brightness difference between two adjacent areas and avoid the problem of obvious brightness dividing lines. Moreover, the refresh frequency changes more frequently in the low refresh frequency area (for example, below 40HZ) than in the high refresh frequency area (for example, above 40HZ), and the refresh frequency changes more gradually, further improving the user experience and reducing power consumption.

[0093] In some embodiments, at the end of a display period, the selection signal corresponding to the static holding area A3 is forced to jump once.

[0094] According to the aforementioned transition rules, the strobe signal corresponding to the static holding area A3 is always maintained at a high level, causing the refresh frequency of the pixel units 101 in this area to be less than 1 Hz, resulting in an ultra-low refresh frequency problem. Current display panels do not support ultra-low refresh frequency display. As shown in FIG7 , at the end of a display cycle, the strobe signal corresponding to the static holding area A3 can be forced to transition once, causing the strobe signal corresponding to the static holding area A3 to jump to a low level, achieving a single refresh, avoiding the ultra-low frequency problem, and ensuring normal display of the display panel.

[0095] In a second aspect, an embodiment of the present disclosure provides a display device, which includes a display panel as provided in any of the above embodiments. The display device can specifically be an electronic device with a display function, such as a mobile phone, a smart TV, a tablet computer, a laptop computer, a car navigation system, etc. Its implementation principle and beneficial effects are the same as the implementation principle and beneficial effects of the above-mentioned display panel, and will not be repeated here.

[0096] In a third aspect, an embodiment of the present disclosure provides a method for driving a display panel, for driving the display panel provided by any of the above embodiments, wherein the method for driving the display panel includes: steps S301 to S304.

[0097] S301 , outputting gate driving signals step by step according to a preset timing sequence.

[0098] S302 , generating a gating signal according to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area.

[0099] S303 , modifying the selection signal according to the refresh frequency of the pixel units in the first transition refresh area.

[0100] S304 , inputting a gate driving signal into a corresponding pixel unit under the control of the modified gate signal.

[0101] Optionally, step S304, inputting a gate drive signal into a corresponding pixel unit under the control of the modified gate signal, may also include:

[0102] S302a, generating a strobe signal according to the refresh frequencies of the pixel units in the second dynamic refresh area and the static holding area.

[0103] S303a, modifying the selection signal according to the refresh frequency of the pixel units in the second transition refresh area.

[0104] In the driving method of the display panel provided in the present application, the selection signal is corrected and the corrected selection signal is used to control the gate drive signal to enter the pixel circuit of the pixel unit of the corresponding row, thereby controlling the data refresh frequency. For example, the refresh frequency of the first transition refresh area B1 is controlled to be between the first dynamic refresh area A1 and the second dynamic refresh area A2, and the refresh frequency of the second transition refresh area B2 is controlled to be between the second dynamic refresh area A2 and the static holding area A3, so as to prevent the appearance of obvious boundary areas between the first dynamic refresh area A1 and the second dynamic refresh area A2 and between the second dynamic refresh area A2 and the static holding area A3, so as to reduce the brightness difference between the two adjacent areas, thereby avoiding the problem of obvious brightness dividing lines, thereby improving the display effect of the display panel and improving the user experience.

[0105] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display panel, in, The display panel has a display area, and the display panel includes: a plurality of pixel units arranged in an array in the display area; The display area is divided into a first dynamic refresh area and a second dynamic refresh area, and at least one first transition refresh area between the first dynamic refresh area and the second dynamic refresh area; The refresh frequency of the pixel units in the first dynamic refresh area is different from the refresh frequency of the pixel units in the second dynamic refresh area; The refresh frequency of the pixel units in each of the first transition refresh areas is between the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area; The number of rows of pixel units in the first transition refresh area is at least smaller than the number of rows of pixel units in the first dynamic refresh area and the number of rows of pixel units in the second dynamic display area.

2. The display panel according to claim 1, in, A refresh frequency of the pixel unit in the first dynamic refresh area is greater than a refresh frequency of the pixel unit in the second dynamic refresh area.

3. The display panel according to claim 2, in, The refresh frequency of the pixel units in each of the first transition refresh areas gradually decreases along the direction from the first dynamic refresh area to the second dynamic refresh area.

4. The display panel according to claim 3, in, The display area is further divided into a static holding area and at least one second transition refresh area between the second dynamic refresh area and the static holding area; The refresh frequency of the pixel unit in the static holding area is 1 Hz; The refresh frequencies of the pixel units in the at least one second transition refresh zone are between the refresh frequencies of the pixel units in the second dynamic refresh zone and the static holding zone.

5. The display panel according to claim 4, in, The refresh frequency of the pixel units in each of the second transition refresh areas gradually decreases along the direction from the second dynamic refresh area to the static holding area.

6. The display panel according to claim 5, in, The display panel also has a peripheral area arranged on at least one side of the display area, and the display panel also includes: a plurality of shift registers and a gating circuit located in the peripheral area; each of the shift registers is connected to a row of pixel units through the gating circuit; the gating circuit includes: a signal generating subcircuit, a correction subcircuit and an output subcircuit; The shift register is configured to output the gate drive signal step by step according to a preset timing sequence; The signal generating subcircuit is configured to generate a gating signal according to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area; The correction subcircuit is configured to correct the gating signal according to the refresh frequency of the pixel unit in the first transition refresh area; The output subcircuit is configured to input the gate driving signal to the corresponding pixel unit under the control of the modified selection signal.

7. The display panel according to claim 6, in, The correction subcircuit is specifically configured as follows: According to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area, obtaining the number of frames between jumps of the strobe signals corresponding to the first dynamic refresh area and the second dynamic refresh area; According to the number of frames at which the strobe signal corresponding to the first dynamic refresh area and the second dynamic refresh area jumps, the number of frames at which the strobe signal corresponding to the first transition refresh area jumps is obtained; The selection signal is modified according to the number of frames between jumps of the selection signal corresponding to the first transition refresh area.

8. The display panel according to claim 7, in, The number of frames between which the strobe signal corresponding to the first transition refresh zone changes is between the number of frames between which the strobe signal corresponding to the first dynamic refresh zone changes and the number of frames between which the strobe signal corresponding to the second dynamic refresh zone changes.

9. The display panel according to claim 7, in, The number of frames between which the selection signals corresponding to the first transition refresh areas change gradually increases from the first dynamic refresh area to the second dynamic refresh area.

10. The display panel according to claim 6, in, The signal generating subcircuit is further configured to generate a gating signal according to a refresh frequency of the pixel unit in the static holding area; The correction subcircuit is further configured to correct the selection signal according to the refresh frequency of the pixel unit in the second transition refresh area.

11. The display panel according to claim 10, in, The correction subcircuit is further specifically configured as: According to the refresh frequency of the pixel unit in the static holding area, the number of frames between jumps of the strobe signal corresponding to the static holding area is obtained; According to the number of frames at which the strobe signal corresponding to the second dynamic refresh area and the static hold area jumps, the number of frames at which the strobe signal corresponding to the second transition refresh area jumps is obtained; The selection signal is modified according to the number of frames between jumps of the selection signal corresponding to the second transition refresh area.

12. The display panel according to claim 11, in, The number of frames between which the selection signal corresponding to the second transition refresh zone changes is between the number of frames between which the selection signal corresponding to the second dynamic refresh zone and the static holding zone changes.

13. The display panel according to claim 11, in, The number of frames between jumps of the selection signals corresponding to the second transition refresh zones gradually increases along the second dynamic refresh zone toward the static holding zone.

14. The display panel according to claim 13, in, At the end of a display cycle, the selection signal corresponding to the static holding area is forced to jump once.

15. A display device, in, The display device comprises the display panel according to any one of claims 1 to 14.

16. A method for driving a display panel, for driving the display panel according to any one of claims 1 to 14, in, The driving method of the display panel includes: According to the preset timing, the gate drive signal is output step by step; generating a gating signal according to the refresh frequencies of the pixel units in the first dynamic refresh area and the second dynamic refresh area; modifying the gating signal according to the refresh frequency of the pixel unit in the first transition refresh area; Under the control of the modified gate signal, the gate driving signal is input into the corresponding pixel unit.

17. The method for driving a display panel according to claim 16, in, Under the control of the modified gate signal, the gate drive signal is input into the corresponding pixel unit, and the method also includes: generating a gating signal according to the refresh frequency of the pixel units in the second dynamic refresh area and the static holding area; The selection signal is modified according to the refresh frequency of the pixel unit in the second transition refresh area.

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