Patent Publication Number: US-2023154384-A1

Title: Display panel and display device

Description:
BACKGROUND OF INVENTION 
     Field of Invention 
     This application relates to the field of display technology, in particular to a display panel and a display device. 
     Description of Prior Art 
     With the development of multimedia, display devices have become more and more important. Correspondingly, the requirements for various types of display devices are getting higher and higher, and especially in the field of smart phones, high-frequency drive displays, ultra-high-frequency drive displays, low-power drive displays, low-frequency drive displays, and ultra-low-frequency drive displays will become the development demand direction at present and in the future. 
     The display panel in the traditional technical solution generally cannot meet the requirements of the high-frequency drive display or the ultra-high frequency drive display, mainly because it cannot meet the writing requirements of the data signals during the high-frequency drive display or the ultra-high frequency drive display. 
     SUMMARY OF INVENTION 
     The present application provides a display panel and a display device, which solves the problem of being unable to meet the writing requirements of data signals during high-frequency drive display or ultra-high-frequency drive display. 
     In a first aspect, the present application provides a display panel, which includes a GOA circuit, a source driving chip, a multiplexing circuit, and a plurality of pixels distributed in an array; the GOA circuit includes N numbers of cascaded GOA units, and an Nth-level one of the GOA units is cascaded with an N+X-level one of the GOA units; the source driving chip has a plurality of output pins; the multiplexing circuit includes a plurality of multiplexing units, wherein each of the multiplexing units includes an input terminal, a first output terminal, and a second output terminal, and one of the output pins is correspondingly connected to the input terminal; the first output terminal is correspondingly connected to odd-numbered rows of the pixels in a same column, and the second output terminal is correspondingly connected to even-numbered rows of the pixels in a same column; N and X are both integers greater than or equal to 2; and working cycles of adjacent ones of the GOA units at least partially overlap. 
     Based on the first aspect, in a first embodiment of the first aspect, there is a first interval cycle between a working cycle of the Nth-level one of the GOA units and a working cycle of an N+2-level one of the GOA units. 
     Based on the first embodiment of the first aspect, in a second embodiment of the first aspect, each of the multiplexing units includes a first transistor and a second transistor; there is a second interval cycle between a working cycle of the first transistor and a working cycle of the second transistor; and the working cycle of the first transistor, the second interval cycle, and the working cycle of the second transistor are in a same working cycle of one of the GOA units. 
     Based on the second embodiment of the first aspect, in a third embodiment of the first aspect, the first interval cycle is different from the second interval cycle. 
     Based on the third embodiment of the first aspect, in a fourth embodiment of the first aspect, the pixels include: a driving transistor; a first transistor, wherein one of a source and a drain of the first transistor is connected to a gate of the driving transistor, and the gate of the first transistor is connected to a first control signal; and a second transistor, wherein one of a source and a drain of the second transistor is connected to another of the source and the drain of the first transistor, the another of the source and the drain of the second transistor is connected to one of the source and the drain of the driving transistor, and the gate of the second transistor is connected to a second control signal, wherein the driving transistor is a polysilicon thin film transistor, and the first transistor and the second transistor are both oxide thin film transistors. 
     Based on the fourth embodiment of the first aspect, in a fifth embodiment of the first aspect, the pixels further include: a third transistor, wherein one of a source and a drain of the third transistor is connected to an initialization signal, another of the source and the drain of the third transistor is connected to one of the source and the drain of the second transistor, and a gate of the third transistor is connected to a third control signal. 
     Based on the fifth embodiment of the first aspect, in a sixth embodiment of the first aspect, the pixels further include: a first light-emitting control transistor, wherein one of a source and a drain of the first light-emitting control transistor is connected to a first power signal, another of the source and the drain of the first light-emitting control transistor is connected to another of the source and the drain of the driving transistor, and a gate of the first light-emitting control transistor is connected to the light-emitting control signal; and a second light-emitting control transistor, wherein one of a source and a drain of the second light-emitting control transistor is connected to one of the source and the drain of the driving transistor, and a gate of the second light-emitting control transistor is connected to the light-emitting control signal. 
     Based on the sixth embodiment of the first aspect, in a seventh embodiment of the first aspect, the pixels further include: a reset transistor, wherein one of a source and a drain of the reset transistor is connected to another of the source and the drain of the second light-emitting control transistor, another of the source and the drain of the reset transistor is connected to the initialization signal or another of the source and the drain of the third transistor, and a gate of the reset transistor is connected to the third control signal or a data writing control signal. 
     Based on the seventh embodiment of the first aspect, in an eighth embodiment of the first aspect, the pixels further include: a writing transistor, wherein one of a source and a drain of the writing transistor is connected to a data signal, another of the source and the drain of the writing transistor is connected to another of the source and the drain of the driving transistor, and a gate of the writing transistor is connected to the data writing control signal. 
     In a second aspect, the present application provides a display device, which includes the display panel in any one of the foregoing embodiments. 
     In the display panel provided in this embodiment, through improvement of the cascade connection between GOA units and the at least partially overlapping between working cycles of adjacent ones of the GOA units, more working cycles can be provided for the writing of the data signals to meet the writing requirements of the data signals during high-frequency drive display or ultra-high frequency drive display. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a schematic diagram of a first structure of a display panel provided by an embodiment of the application. 
         FIG.  2    is a schematic structural diagram of a GOA circuit provided by an embodiment of the application. 
         FIG.  3    is a schematic diagram of a second structure of a display panel provided by an embodiment of the application. 
         FIG.  4    is a timing diagram of corresponding signals in the display panel provided by an embodiment of the application. 
         FIG.  5    is a schematic diagram of a first circuit structure of a pixel provided by an embodiment of the application. 
         FIG.  6    is a schematic diagram of a second circuit structure of a pixel provided by an embodiment of the application. 
         FIG.  7    is a schematic diagram of a third circuit structure of a pixel provided by an embodiment of the application. 
         FIG.  8    is a schematic diagram of a fourth circuit structure of a pixel provided by an embodiment of the application. 
         FIG.  9    is a timing diagram of corresponding signals in the pixels shown in  FIG.  7    and/or  FIG.  8   . 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     In order to make the purpose, technical solutions and effects of this application clearer and clearer, the following further describes this application in detail with reference to the drawings and examples. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application. 
     Referring to  FIGS.  1 - 9   , as shown in  FIG.  1   , the present embodiment provides a display panel, which includes a GOA circuit  10 , a source driving chip  20 , a multiplexing circuit  30 , and a plurality of pixels  40  distributed in an array. The GOA circuit  10  includes N numbers of cascaded GOA units, and an Nth-level one of the GOA units is cascaded with the N+X-level GOA unit one of the GOA units; the source driving chip  20  has a plurality of output pins; the multiplexing circuit  30  includes a plurality of multiplexing units, wherein each of the multiplexing units includes an input terminal, a first output terminal, and a second output terminal, and one of the output pins is correspondingly connected to the input terminal; the first output terminal is correspondingly connected to odd-numbered rows of the pixels  40  in a same column, and the second output terminal is correspondingly connected to even-numbered rows of the pixels  40  in a same column; wherein N and X are both integers greater than or equal to 2; and working cycles of adjacent ones of the GOA units at least partially overlap. As shown in  FIG.  2   , the display panel is provided with a display area and a non-display area located on at least one side of the display area, the GOA circuit  10  is disposed in the non-display area on one side, and each GOA unit in the GOA circuit  10  is cascaded in a single row, wherein the odd-numbered GOA units are sequentially cascaded, and for example, a first scan signal G 1  output by the first-level GOA unit GOA 1  is also used as an input signal of the third-level GOA unit GOA 3 ; the even-numbered GOA units are sequentially cascaded, and for example, a second scan signal G 2  output by the second-level GOA unit GOA 2  is used as an input signal of the fourth-level GOA unit GOA 4  at the same time. A plurality of clock signal lines parallel to each other are provided on a side of the GOA circuit  10  far away from the display area. The first clock signal line CK 1 , the second clock signal line CK 2 , the third clock signal line CK 3 , and the fourth clock signal line CK 4  are arranged in sequence from the nearer to the farthest from the GOA circuit  10 . The first clock signal line CK 1  is connected to the second-level GOA unit GOA 2  and the fourth-level GOA unit GOA 4 , the second clock signal line CK 2  is connected to the first-level GOA unit GOA 1  and the third-level GOA unit GOA 3 , the third clock signal line CK 3  is connected to the second-level GOA unit GOA 2  and the fourth-level GOA unit GOA 4 , and the fourth clock signal line CK 4  is connected to the first-level GOA unit GOA 1  and the third-level GOA unit GOA 3 . 
     It is understandable that in the display panel provided in this embodiment, through improvement of the cascade connection between GOA units and the at least partially overlapping between working cycles of adjacent ones of the GOA units, more working cycles can be provided for the writing of the data signals to meet the writing requirements of the data signals during high-frequency drive display or ultra-high frequency drive display. 
     An active driving chip  20  and a multiplexing circuit  30  are also provided in the non-display area on the other side of the display panel. An output terminal of the source driving chip  20  is connected to the input terminal of the multiplexing circuit  30  correspondingly, a control terminal of the multiplexing circuit  30  is connected to a strobe signal correspondingly, and an output terminal of the multiplexing circuit  30  is connected to the data line. The multiplexing circuit  30  includes a plurality of multiplexing units; an input terminal of each multiplexing unit is connected to an output terminal of the source driving chip  20 , and each multiplexing unit includes at least two output terminals. One output terminal of the multiplexing unit is correspondingly connected to one data line. 
     As shown in  FIG.  3   , a plurality of pixels  40 , a plurality of scan lines, and a plurality of data lines are distributed in an array in the display area, and the plurality of scan lines and the plurality of data lines are perpendicular to and cross each other, thereby dividing a plurality of pixels  40 . Each scan line corresponds to a scan signal to simultaneously control the charging of the pixels  40  in the same row; wherein, a data line is distributed on each of opposite sides of the pixel  40  in the same column, the data line on one side is connected to the odd-numbered rows of the pixels  40  in the same column, and the data line on another side is connected to the even-numbered rows of the pixels  40  in the same column. Two data lines are provided between the pixels  40  in adjacent ones of the columns, one of the data lines is connected to the even-numbered rows of pixels  40  of one column of the pixels  40 , and another one of the data lines is connected to the odd-numbered rows of pixels  40  of another column of the pixels  40 . For example, the first data signal S 1  and the second data signal S 2  are correspondingly output from two pins of the source driving chip  20 , wherein the first data signal S 1  outputs the first data sub-signal and the second data sub-signal after passing through the first multiplexing unit, the first data sub-signal is connected to odd-numbered rows of the pixels  40  in the same column, and the second data sub-signal is connected to even-numbered rows of the pixels  40  in the same column; the second data signal S 2  outputs the third data sub-signal and the fourth data sub-signal after passing through the second multiplexing unit, the third data sub-signal is connected to the odd-numbered row of pixels  40  in another same column, and the fourth data sub-signal is connected to the even-numbered row of pixel  40  in the another same column. The first data sub-signal, the second data sub-signal, the third data sub-signal, and the fourth data sub-signal are sequentially transmitted to the first data line D 1 , the second data line D 1 ′, the third data line D 2 , and the fourth data line D 2 ′ which are adjacent and arranged sequentially. 
     It should be noted that the multiplexing unit may include a first transistor and a second transistor; there is a second interval cycle between the working cycle of the first transistor and the working cycle of the second transistor. As shown in  FIG.  4   , the working cycle of the first transistor, the second interval cycle, and the working cycle of the second transistor are in the same working cycle of the GOA unit. The second interval cycle can ensure that the two transistors in the same multiplexing unit perform orderly and time-sharing operations, and avoid cross-working which causes timing confusion. The second interval cycle is greater than or equal to 0.3 microseconds. The working cycle of the first transistor may be, but is not particularly limited to, the same as the working cycle of the second transistor. For example, the working cycle of the first transistor or the working cycle of the second transistor may be 3.17 microseconds. 
     It should be noted that the working cycle of the corresponding transistor is the effective-level duration of the corresponding strobe signal, and for example, it can be a high-level duration or a low-level duration which is defined as being effective as long as it can turn on the corresponding transistor. 
     The pixels may include, but are not particularly limited to, red pixels R, green pixels G, and blue pixels B, and may also include white pixels. 
     As shown in  FIG.  4   , in one of the embodiments, the first multiplexing unit includes a first thin film transistor and a second thin film transistor of a P-channel type; wherein, the first data signal S 1  is connected to the input terminal of the first thin film transistor and the input terminal of the second thin film transistor, the output terminal of the first thin film transistor is connected to the first data line D 1 , the output terminal of the second thin film transistor is connected to the second data line D 1 ′, the control terminal of the first thin film transistor is connected to the first strobe signal mux 1 , and the control terminal of the second thin film transistor is connected to the second strobe signal mux 2 . The effective-level duration of each of the first strobe signal mux 1  and the second strobe signal mux 2 , for example, may be but not particularly limited to a low-level duration, which may be 3.17 microseconds; and a time interval between the rising edge of the first strobe signal mux 1  and the falling edge of the second strobe signal mux 2  is not more than 0.3 microseconds. Correspondingly, the first data line D 1  and the second data line D 1 ′ will output the corresponding first data sub-signal and second data sub-signal during the effective-level duration. 
     The effective-level duration of each of the first scan signal G 1 , the second scan signal G 2 , the third scan signal G 3 , and the fourth scan signal G 4  can be, but is not particularly limited to, a low-level duration, which can be 5.94 microseconds, and the time interval between the rising edge of a first scan signal G 1  and the falling edge of the third scan signal G 3  is not more than 1 microsecond, and the time interval between the rising edge of the second scan signal G 2  and the falling edge of the fourth scan signal G 4  is not greater than 1 microsecond; the effective-level durations of adjacent first scan signal G 1 , second scan signal G 2 , third scan signal G 3 , and fourth scan signal G 4  sequentially overlap at least partially. Further, the effective-level duration of the first scan signal G 1  at least partially overlaps the effective-level duration of the first strobe signal mux 1  and/or the effective-level duration of the second strobe signal mux 2 . 
     It should be noted that there is a first interval cycle between a working cycle of the Nth-level one of the GOA units and a working cycle of an N+X-level one of the GOA units, to avoid overlapping of the working cycles between the separated GOA units, which causes timing confusion. X can be, but not particularly limited to 2, and can also be 3 or 4. The first interval cycle may be greater than or equal to 1 microsecond. The working cycle of the Nth-level one of the GOA units may be greater than or equal to 5.94 microseconds. 
     It should be noted that the working cycle of the N-th GOA unit is the effective-level duration corresponding to the scan signal, and for example, it can be a high-level duration or a low-level duration, which is defined as being effective as long as it can turn on the corresponding transistor. 
     It is understandable that the data writing control signal in this embodiment can be, but is not particularly limited to, the corresponding scan signal output by the GOA circuit; the data signal in this embodiment is directly written into the pixel in the display area, and the effective-level duration cycle of the data signal may be, but not particularly limited to, consistent with the effective-level duration cycle of the corresponding strobe signal. Obviously, the effective-level duration cycle of the data writing control signals in this embodiment, that is, the effective-level of the scan signal and the data signal lasts, can better improve the writing ability of the data signal. 
     As shown in  FIG.  5   , in one of the embodiments, the pixels can be configured as follows: 
     The first power signal ELVDD is connected to one of the first terminal of the storage capacitor C 11  and one of a source and a drain of the first light-emitting control transistor T 15 ; another of the source and the drain of the first light-emitting control transistor T 15  is connected to one of the source and the drain of the transistor T 12  is connected to one of the source and the drain of the driving transistor T 11 ; another of the source and the drain of the writing transistor T 12  is connected to the data signal data 11 ; a gate of the writing transistor T 12  is connected to the data writing control signal PScan 11 ( n ); another of the source and the drain of the driving transistor T 11  is connected to one of the source and the drain of the second light-emitting control transistor T 16  and one of the source and the drain of the compensation transistor T 13 . Another of the source and the drain of the second light-emitting control transistor T 16  is connected to the anode of the light-emitting device D 11 ; the light-emitting control signal EM 11  is connected to the gate of the first light-emitting control transistor T 15  and the gate of the second light-emitting control transistor T 16 ; the cathode of the light-emitting device D 11  is connected to the second power signal ELVSS; another of the source and the drain of the compensation transistor T 13  is connected to the second terminal of the storage capacitor C 11 , the gate of the driving transistor T 11 , and one of the source and the drain of the initialization transistor T 14 . Another of the source and the drain of the initialization transistor T 14  is connected to the initialization signal Vint 11  and one of the source and the drain of the reset transistor T 17 ; another of the source and the drain of the reset transistor T 17  is connected to the anode of the light-emitting device D 11 ; the first control signal is connected to the gate of the compensation transistor T 13  and the gate of the reset transistor T 17 ; the second control signal is connected to the gate of the initialization transistor T 14 ; wherein, the first control signal can be, but is not particularly limited to, data writing control signal PScan 11 ( n ); and the second control signal can be, but is not particularly limited to, the data writing control signal PScan 11 (n−1). 
     It should be noted that in this embodiment, each of the first light-emitting control transistor T 15 , the writing transistor T 12 , the driving transistor T 11 , the compensation transistor T 13 , the second light-emitting control transistor T 16 , the initialization transistor T 14 , and the reset transistor T 17  may be, but not particularly limited to, a P-channel thin film transistor, and can also be a polysilicon thin film transistor, and further can be configured as a low temperature polysilicon thin film transistor. 
     The compensation transistor T 13  can also be configured as two P-channel type low temperature polysilicon thin film transistors connected in series, the gates of the two thin film transistors are connected; the source of one of the thin film transistors and the drain of the other one of the thin film transistors are connected. The initialization transistor T 14  can be, but is not particularly limited to, configured to have the same structure as the compensation transistor T 13 , which will not be repeated herein for brevity. 
     It can be understood that the increase in the duty cycle of the data signal Data 11 , the data writing control signal PScan 11 ( n ), and the data writing control signal PScan 11 (n−1) in this embodiment can not only increase the writing ability of the data signal Data 11 , but also simultaneously increase the reset time of the light-emitting device D 11  and the initialization time of the gate potential of the driving transistor T 11 , which is beneficial for the display panel to realize the high frequency display state or the ultra high frequency display state. 
     As shown in  FIG.  6   , in one of the embodiments, the pixels can also be configured as follows: 
     The first power signal ELVDD is connected to one of the first terminal of the storage capacitor C 21  and one of a source and a drain of the first light-emitting control transistor T 25 ; another of the source and the drain of the first light-emitting control transistor T 25  is connected to one of the source and the drain of the transistor T 22  is connected to one of the source and the drain of the driving transistor T 21 ; another of the source and the drain of the writing transistor T 22  is connected to the data signal data 2   l ; a gate of the writing transistor T 22  is connected to the data writing control signal PScan 21 (n); another of the source and the drain of the driving transistor T 21  is connected to one of the source and the drain of the second light-emitting control transistor T 26  and one of the source and the drain of the compensation transistor T 23 . Another of the source and the drain of the second light-emitting control transistor T 26  is connected to the anode of the light-emitting device D 21 ; the light-emitting control signal EM 21  is connected to the gate of the first light-emitting control transistor T 25  and the gate of the second light-emitting control transistor T 26 ; the cathode of the light-emitting device D 21  is connected to the second power signal ELVSS; another of the source and the drain of the compensation transistor T 23  is connected to the second terminal of the storage capacitor C 21 , the gate of the driving transistor T 21 , and one of the source and the drain of the initialization transistor T 24 ; another of the source and the drain of the initialization transistor T 24  is connected to the initialization signal Vint 21  and one of the source and the drain of the reset transistor T 27 . Another of the source and the drain of the reset transistor T 27  is connected to the anode of the light emitting device D 21 ; the first control signal is connected to the gate of the compensation transistor T 23  and the gate of the reset transistor T 27 ; the second control signal is connected to the gate of the initialization transistor T 24 ; wherein, the first control signal can be, but is not particularly limited to, data writing control signal PScan 11 ( n ); and the second control signal can be, but is not particularly limited to, the data writing control signal PScan 11 (n−1). 
     It should be noted that in this embodiment, each of the first light-emitting control transistor T 25 , the writing transistor T 22 , the driving transistor T 21 , the second light-emitting control transistor T 26 , and the reset transistor T 27  may be, but are not particularly limited to, a P-channel thin film transistor, and can also be a polysilicon thin film transistor, and further can be configured as a low temperature polysilicon thin film transistor. The compensation transistor T 23  and the initialization transistor T 24  can be, but are not particularly limited to, both N-channel thin film transistors, or oxide thin film transistors, and further can be configured as metal oxide thin film transistors. It can be understood that the compensation transistor T 23  and the initialization transistor T 24  in this embodiment are configured as oxide thin film transistors, which can further reduce the gate leakage current of the driving transistor T 21 , more conducive to reducing the pixel of this embodiment to achieve low power consumption and the display status of different frequencies. 
     Meanwhile, the increase in the duty cycle of the data signal Data 21 , the data writing control signal PScan 21 ( n ), the first control signal, and the second control signal in this embodiment can not only improve the writing ability of the data signal Data 21 , but also can increases the reset time of the light-emitting device D 21  and the initialization time of the gate potential of the driving transistor T 21 , which are more beneficial for the display panel to realize the high frequency display state or the ultra high frequency display state. 
     As shown in  FIGS.  7  and  8   , in one of the embodiments, the pixel may also be configured to include a driving transistor T 1 , a first transistor T 3 , and a second transistor T 8 ; one of the source and the drain of the first transistor T 3  is connected to the gate of the driving transistor T 1 , the gate of the first transistor T 3  is connected to the first control signal; and one of the source and the drain of the second transistor T 8  is connected to another one of the source and the drain of the first transistor T 3 ; another of the source and the drain of the second transistor T 8  is connected to one of the source and the drain of the driving transistor T 1 , and the gate of the second transistor T 8  is connected to the second control signal; wherein the driving transistor T 1  can be, but is not particularly limited to, a polysilicon thin film transistor, and can also be specifically a low temperature polysilicon thin film transistor; and the first transistor T 3  and the second transistor T 8  can be, but not particularly limited to, both N-channel oxide thin film transistors, and can also be specifically metal oxide thin film transistors. 
     One of the source and the drain of the second transistor T 8  is connected to another of the source and the drain of the first transistor T 3 , so that the display panel can better suppress the gate leakage current of the driving transistor T 1  within one frame, and better maintain the gate potential of the driving transistor T 1  and achieve low power consumption. 
     It can be understood that the first transistor T 3  and the second transistor T 8  is configured as N-channel oxide thin film transistors to further reduce the gate leakage current of the driving transistor T 1  and reduce the power consumption of the display panel of this embodiment, so that the gate potential of the driving transistor T 1  in the display panel is easier to maintain, which is beneficial for the display panel to work in both the first working state and the second working state. 
     The first control signal in this embodiment can be, but is not particularly limited to, the (N+1)th-level switch signal NScan(n+1) that is effective at high level; the second control signal can be, but is not particularly limited to, the N-level switching signal NScan(n) that is effective at high level. 
     The aforementioned pixel may further include a third transistor T 4 , one of the source and the drain of the third transistor T 4  is connected to the initialization signal Vint, another of the source and the drain of the third transistor T 4  is connected to one of the source and the drain of the second transistor T 8 , and the gate of the third transistor T 4  is connected to a third control signal. It should be noted that the third transistor T 4  can be, but is not particularly limited to, a polysilicon thin film transistor, and can also be specifically a low temperature polysilicon thin film transistor; configuring the third transistor T 4  to be a P-channel type polysilicon thin film transistor can improve the dynamic performance of initialization, and the use of the second transistor T 8  can reduce the leakage current of the driving transistor T 1 , thereby achieving high dynamic performance of the initialization loop and reducing the gate leakage current of the driving transistor T 1 . 
     The above-mentioned pixel may further include a first light-emitting control transistor T 5  and a second light-emitting control transistor T 6 , one of the source and the drain of the first light-emitting control transistor T 5  is connected to the first power signal ELVDD, and another of the source and the drain of the first light-emitting control transistor T 5  is connected to another of the source and the drain of the driving transistor T 1 , the gate of the first light-emitting control transistor T 5  is connected to the light-emitting control signal EM; one of the source and the drain of the second light-emitting control transistor T 6  is connected to one of the source and the drain of the driving transistor T 1 , and the gate of the second light-emitting control transistor T 6  is connected to the light-emitting control signal EM. The first light-emitting control transistor T 5  and the second light-emitting control transistor T 6  can be, but are not particularly limited to, polysilicon thin film transistors, can also be low temperature polysilicon thin film transistors, or can be P-channel thin film transistors. 
     As shown in  FIG.  7   , the above-mentioned pixel further includes a reset transistor T 7 , one of the source and the drain of the reset transistor T 7  is connected to another of the source and the drain of the second light-emitting control transistor T 6 , another of the source and the drain of the reset transistor T 7  is connected to another of the source and the drain of the third transistor T 4 , and the gate of the reset transistor T 7  is connected to the third control signal. 
     The third control signal may be, but is not particularly limited to, the (N−1)th-level data writing control signal Scan(n−1). 
     As shown in  FIG.  8   , the above-mentioned pixel further includes a reset transistor T 7 , one of the source and the drain of the reset transistor T 7  is connected to another of the source and the drain of the second light-emitting control transistor T 6 , another of the source and the drain of the reset transistor T 7  is connected to the initialization signal Vint, and the gate of the reset transistor T 7  is connected to the data writing control signal Scan(n). The reset transistor T 7  may be, but not particularly limited to, a polysilicon thin film transistor, a low temperature polysilicon thin film transistor, or a P-channel thin film transistor. 
     The above-mentioned pixel may further include a writing transistor T 2 , one of the source and the drain of the writing transistor T 2  is connected to the data signal Data, another of the source and the drain of the writing transistor T 2  is connected to another of the source and the drain of the driving transistor T 1 , and the gate of the writing transistor T 2  is connected to the data writing control signal Scan(n). Specifically, the writing transistor T 2  may be, but not particularly limited to, a polysilicon thin film transistor, a low temperature polysilicon thin film transistor, or a P-channel type thin film transistor. 
     The above-mentioned display panel may further include a light-emitting device D 1 , an anode of the light-emitting device D 1  is connected to one of the source and the drain of the reset transistor T 7 ; a cathode of the light-emitting device D 1  is connected to the second power signal ELVSS. The light-emitting device D 1  can be, but is not particularly limited to, a Micro-LED, a Mini-LED, or an OLED. 
     The above-mentioned pixel may further include a storage capacitor C 1 , a first terminal of the storage capacitor C 1  is connected to the first power signal ELVDD; a second terminal of the storage capacitor C 1  is connected to the gate of the driving transistor T 1 . 
     As shown in  FIG.  9   , it should be explained that the falling edge of the (N−1)th-level data write control signal Scan(n−1) is present at the same time as the rising edge of the Nth-level switch signal NScan(n), which is effective at high level; the rising edge of the (N−1)th-level data writing control signal Scan (n−1) is present at the same time as the rising edge of the (N+1)th-level switching signal NScan (n+1) that is effective at high level; and the rising edge of the (N+1)th-level switch signal NScan(n+1) with effective at a high level is present between the rising edge and the falling edge of the Nth-level switch signal NScan(n), which is effective at a high level. The (N+1)th-level switching signal NScan(n+1) partially overlaps the Nth level switching signal NScan(n) that is effective at a high level. 
     In one of the embodiments, the present application provides a display device, which includes the display panel in any of the foregoing embodiments. 
     It is understandable that in the display panel provided in this embodiment, through improvement of the cascade connection between GOA units and the at least partially overlapping between working cycles of adjacent ones of the GOA units, more working cycles can be provided for the writing of the data signals to meet the writing requirements of the data signals during high-frequency drive display or ultra-high frequency drive display. 
     It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and inventive concepts of the present application, and all these changes or substitutions shall fall within the protection scope of the appended claims of the present application.