CN114299867A - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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Abstract
The invention provides a display panel, a driving method thereof and a display device, comprising: a plurality of sub-pixels including a pixel driving circuit and a light emitting element, a first electrode terminal of the light emitting element and an output terminal of the pixel driving circuit being electrically connected to a first node; and a first controllable switch module is electrically connected between the first nodes of at least two sub-pixels, wherein the first controllable switch module is turned on or off in response to a first control signal. The first controllable switch module is connected between the first nodes of the at least two sub-pixels, and then when the at least two sub-pixels are scanned, when the driving current output to the light-emitting element by the pixel driving circuit of one sub-pixel fluctuates, the purpose of stabilizing the fluctuating driving current can be achieved due to the inflow of the driving current output by other electrically connected pixel driving circuits, the stability of the pixel driving circuit is improved, and the display effect of the display device is improved.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel, a driving method thereof, and a display device.
Background
With the increasing demand for display devices, the self-luminous display devices have been widely used in various electronic devices, including computers and mobile phones, due to their advantages of self-luminous, light and thin, low power consumption, high contrast, high color gamut, and flexible display. The self-luminous elements in the existing self-luminous display devices are generally Organic Light Emitting Diodes (OLEDs), Quantum Dot Light Emitting Diodes (QLEDs), Micro Light Emitting Diodes (Micro LEDs), and the like; in actual display, a pixel driving circuit generally outputs a driving current to drive a light emitting element to emit light, so that the display device achieves the purpose of displaying a picture. However, the display effect of the conventional display device is yet to be improved.
Disclosure of Invention
In view of this, the present invention provides a display panel, a driving method thereof and a display device, which effectively solve the technical problems in the prior art and improve the display effect of the display device.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a display panel, comprising: a plurality of sub-pixels including a pixel driving circuit and a light emitting element, a first electrode terminal of the light emitting element and an output terminal of the pixel driving circuit being electrically connected to a first node;
and a first controllable switch module is electrically connected between the first nodes of at least two sub-pixels, wherein the first controllable switch module is turned on or off in response to a first control signal.
Correspondingly, the invention also provides a driving method of the display panel, which is used for driving the display panel, and the driving method comprises the following steps:
scanning any row of the sub-pixels in the at least one row of the sub-pixels;
the first controllable switch module is turned on or off in response to the first control signal.
Optionally, the turning on or off of the first controllable switch module in response to the first control signal includes:
the first controllable switch module is turned on in response to the first control signal during a light emitting phase of the light emitting element of the sub-pixel.
Correspondingly, the invention further provides a display device which comprises the display panel.
Compared with the prior art, the technical scheme provided by the invention at least has the following advantages:
the invention provides a display panel, a driving method thereof and a display device, comprising: a plurality of sub-pixels including a pixel driving circuit and a light emitting element, a first electrode terminal of the light emitting element and an output terminal of the pixel driving circuit being electrically connected to a first node; and a first controllable switch module is electrically connected between the first nodes of at least two sub-pixels, wherein the first controllable switch module is turned on or off in response to a first control signal.
As can be seen from the above, in the technical solution provided by the present invention, the first controllable switch module is connected between the first nodes of the at least two sub-pixels, and further, when the driving current output from the pixel driving circuit of one of the sub-pixels to the light emitting element fluctuates during scanning of the at least two sub-pixels, due to the inflow of the driving currents output from the other electrically connected pixel driving circuits, the purpose of stabilizing the fluctuating driving current can be achieved, the stability of the pixel driving circuit is improved, and the display effect of the display device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a plurality of connected sub-pixels according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention;
FIG. 6 is a timing diagram according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a plurality of connected sub-pixels according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a plurality of connected sub-pixels according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a plurality of connected sub-pixels according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 15 is a flowchart of a driving method according to an embodiment of the present invention;
fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As background art shows, the demand for display devices has been increasing with the increase of display technology, and among various display technologies, self-luminous display devices have been widely used in various electronic devices including electronic products such as computers and mobile phones due to their advantages of self-luminescence, lightness, thinness, low power consumption, high contrast, high color gamut, and flexible display. The self-luminous elements in the existing self-luminous display devices are generally organic light-emitting diodes, quantum dot light-emitting diodes, micro light-emitting diodes and the like; in actual display, a pixel driving circuit generally outputs a driving current to drive a light emitting element to emit light, so that the display device achieves the purpose of displaying a picture. However, the display effect of the conventional display device is yet to be improved.
Accordingly, embodiments of the present invention provide a display panel, a driving method thereof and a display device, which effectively solve the technical problems in the prior art and improve the display effect of the display device.
To achieve the above object, the technical solutions provided by the embodiments of the present invention are described in detail below, specifically with reference to fig. 1 to 16.
Referring to fig. 1, a schematic structural diagram of a display panel according to an embodiment of the present invention is shown, where the display panel includes:
a plurality of sub-pixels Pi including a pixel driving circuit 100 and a light emitting element 200, a first electrode terminal of the light emitting element 200 and an output terminal of the pixel driving circuit 100 being electrically connected to a first node N1.
A first controllable switch module 310 is electrically connected between the first nodes N1 of at least two of the sub-pixels Pi, wherein the first controllable switch module 310 is turned on or off in response to a first control signal K1.
In an embodiment of the invention, the display panel includes a display area AA and a non-display area NA located at a periphery of the display area AA, wherein the plurality of sub-pixels Pi are located within the display area AA. The plurality of sub-pixels Pi provided by the embodiment of the invention can be arranged in an array; and, at least two sub-pixels Pi of the first controllable switch module 310 connected between the first nodes may be in the structure of the same-row sub-pixels Pi scanned simultaneously. For convenience of illustration, the following embodiments of the present invention are described by taking a plurality of connected sub-pixels Pi as the sub-pixels in the same row scanned at the same time.
It will be appreciated that the present invention provides that at least two sub-pixels Pi to which the first controllable switch module 310 is connected are scanned simultaneously. Further, when the at least two sub-pixels Pi are scanned, the pixel driving circuit 100 of the sub-pixel Pi outputs a driving current to the electrically connected light emitting element 200, and the light emitting element 200 emits light in response to the driving current. Meanwhile, the first controllable switch module 310 is turned on in the process that the pixel driving circuit 100 outputs the driving current, so that when the driving current output by one of the pixel driving circuits 100 is waveguided, the driving current transmitted to the light emitting element 200 can be kept stable due to the inflow of the rest of the driving current, the stability of the pixel driving circuit 100 is improved, and the display effect of the display device is improved.
In an embodiment of the present invention, the first controllable switch module may be implemented by a transistor. Referring to fig. 2, a schematic structural diagram of a plurality of connected sub-pixels provided in an embodiment of the present invention is shown, wherein two of the sub-pixels Pi electrically connected to the first controllable switch module 310 are defined as an adjustment sub-pixel Pit and a to-be-adjusted sub-pixel Pit, respectively, where the first controllable switch module 310 includes: a first controllable transistor M1, a first end of the first controllable transistor M1 is electrically connected to the first node N1 of the adjustment subpixel Pit, a second end of the first controllable transistor M1 is electrically connected to the first node N1 of the to-be-adjusted subpixel pd, and a gate of the first controllable transistor M1 is connected to the first control signal K1.
In an embodiment of the present invention, the conduction type of the first controllable transistor M1 provided in the embodiment of the present invention may be an N type or a P type, and the present invention is not limited in particular. When the first controllable transistor M1 is an N-type transistor, the first control signal K1 is at a high level to control the first controllable transistor M1 to be turned on at least during a part of the time period when the pixel driving circuit 100 of the sub-pixel Pi outputs the driving current. Alternatively, when the first controllable transistor M1 is a P-type transistor, the first control signal K1 is at a low level to control the first controllable transistor M1 to be turned on at least during a part of the time period when the pixel driving circuit 100 of the sub-pixel Pi outputs the driving current.
In an embodiment of the present invention, when more sub-pixels are connected through the first controllable transistor, all the first controllable transistors may have the same conduction type, and the first control signals corresponding to the connected sub-pixels are the same signal. Referring to fig. 3, a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention is shown, wherein in the sub-pixels Pi in the same row, all the first controllable transistors M1 have the same conduction type, and all the first control signals K1 are the same control signal. In which the scanning stages of the sub-pixels Pi connected in the same row are the same, and the first control signals K1 of the sub-pixels connected in the same row are set to be the same signal and supplied from the same signal terminal, so that the number of signal terminals in the wiring can be reduced, and the wiring structure can be simplified.
In other embodiments of the present invention, the first control signals corresponding to the connected sub-pixels may also be mutually independent control signals, and are respectively provided by the respective corresponding signal terminals; in addition, at least one of the first controllable transistors corresponding to the plurality of connected sub-pixels provided in the embodiments of the present invention may have a different conduction type from the others, and thus, the first controllable transistors need to be specifically designed according to practical applications.
In an embodiment of the present invention, the first control signal provided by the present invention can also multiplex the control signal in the pixel driving circuit. Referring to fig. 4, a schematic structural diagram of another connected multiple sub-pixels provided in the embodiment of the present invention is shown, where the pixel driving circuit 100 provided in the embodiment of the present invention includes a driving transistor M0, a first light-emitting control transistor Mf1, and a second light-emitting control transistor Mf2, a first end of the first light-emitting control transistor Mf1 is connected to a first power voltage V1, a second end of the first light-emitting control transistor Mf1 is electrically connected to a first end of the driving transistor M0, and a gate of the first light-emitting control transistor Mf1 is connected to a light-emitting control signal Kf.
The first terminal of the second emission control transistor Mf2 is electrically connected to the second terminal of the driving transistor M0, the second terminal of the second emission control transistor Mf2 is electrically connected to the first electrode terminal of the light emitting device 200, and the gate of the second emission control transistor Mf2 is connected to the emission control signal Kf. In the same row of the sub-pixels Pi, the conduction type of the first controllable transistor M1 is the same as the conduction type of the first light-emitting control transistor Mf1 and the second light-emitting control transistor Mf2, and the first control signal K1 and the light-emitting control signal Kf are the same signal.
It is understood that the light emission control signal Kf provided by the embodiment of the present invention is used to control the first light emission control transistor Mf1 and the second light emission control transistor Mf2, and when the light emission control signal Kf controls the first light emission control transistor Mf1 and the second light emission control transistor Mf2 to be turned on, the driving current generated by the driving transistor M0 will be transmitted to the light emitting element 200. Thus, when the light emission control transistor and the first controllable transistor M1 are of the same conduction type, the first control signal K1 and the light emission control signal Kf are set to be the same signal, and the first controllable transistor M1 can be turned on to connect the first nodes N1 of the connected sub-pixels Pi while the driving current is transmitted to the light emitting element 200.
It should be noted that, the first controllable transistor M1 and the light-emitting control transistor provided in the embodiment of the present invention may be both P-type transistors or both N-type transistors, and the first controllable transistor M1 and the light-emitting control transistor may be specifically selected according to practical applications.
The operation of the pixel driving circuit and the first controllable switch module according to the embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following, the present invention will be described by taking a case where all transistors are P-type transistors. In addition, the following specific structure of the pixel driving circuit provided in the embodiment of the present invention is only one of all applicable circuits in the present invention, and in other embodiments of the present invention, the pixel driving circuit may also have other circuit structures. Referring to fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of another connected plurality of sub-pixels according to an embodiment of the present invention, and fig. 6 is a timing diagram according to an embodiment of the present invention.
The pixel driving circuit 100 according to the embodiment of the present invention further includes a reset transistor Mr, a first data writing transistor Md1, a second data writing transistor Md2, and a storage capacitor C. A first terminal of the reset transistor Mr is connected to a reset voltage Vref, a second terminal of the reset transistor Mr is electrically connected to the gate of the drive transistor M0, and the gate of the reset transistor Mr is connected to a reset control signal Kr.
The first terminal of the first data transistor Md1 is connected to the data voltage Vdata, the second terminal of the first data transistor Md1 is electrically connected to the first terminal of the driving transistor M0, and the gate of the first data transistor Md1 is connected to the data control voltage Kd. The first terminal of the second data transistor Md2 is electrically connected to the second terminal of the driving transistor M0, the second terminal of the second data transistor Md2 is electrically connected to the gate of the driving transistor M0, and the gate of the second data transistor M0 is connected to the data control signal Kd. A first terminal of the storage capacitor C is connected to the first power voltage V1, a second terminal of the storage capacitor C is electrically connected to the gate of the driving transistor M0, and a second electrode terminal of the light emitting device 200 is connected to the second power voltage V2.
The driving of the pixel driving circuit 100 according to the embodiment of the present invention includes a reset stage R101, a data writing stage R102, and a light emitting stage R103, which are performed in sequence.
In the reset phase R101, the reset control signal Kr is at a low level, and the reset transistor Kr is controlled to be turned on, so that the reset voltage Vref is transmitted to the gate of the driving transistor M0, thereby resetting the driving transistor M0. Meanwhile, the data control signal Kd and the light emission control signal Kf are at a high level, so that the first light emission control transistor Mf1, the second light emission control transistor Mf2, the first data writing transistor Md1, and the second data writing transistor Md2 are all turned off. And, the first control signal K1 is high, controlling the first controllable transistor M1 to turn off.
In the data writing phase R102, the data control signal Kd is at a low level, and controls the first data writing transistor Md1 and the second data writing transistor Md2 to be turned on, the data voltage Vdata is transmitted to the first terminal of the driving transistor M0 through the first data writing transistor Md1, and then transmitted to the gate of the driving transistor M0 through the second data writing transistor Md2 after passing through the driving transistor M0, until the voltage level of the gate of the driving transistor M0 is Vdata-Vth, where Vth is the absolute value of the threshold voltage of the driving transistor M0. Meanwhile, the reset control signal Kr and the emission control signal Kf are at a high level, and the reset transistor Mr, the first emission control transistor Mf1, and the second emission control transistor Mf2 are turned off. And, the first control signal K1 is high, controlling the first controllable transistor M1 to turn off.
In the light emitting period R103, the light emitting control signal Kf is at low level, and the first light emitting control transistor Mf1 and the second light emitting control transistor Mf2 are controlled to be turned on, so that the driving current generated by the driving transistor M0 is transmitted to the light emitting element 200. Wherein the driving current I ═ K ═ Vgs (Vgs-Vth)2＝K*(V1-Vdata)2Vgs is V1-Vdata + Vth, and V1 is the first power supply voltage. At the same time, the reset control signal Kr and the data control signal Kd are high, and the reset transistor Mr, the first data writing transistor Md1, and the second data writing transistor Md2 are turned off. And, the first control signal K1 is low, controlling the first controllable transistor M1 to be turned on, so as to connect the first nodes N1 of the connected sub-pixels Pi.
Referring to fig. 7, for a schematic structural diagram of another connected sub-pixels provided in the embodiment of the present invention, two of the sub-pixels Pi electrically connected to the first controllable switch module 310 are defined as an adjustment sub-pixel Pit and a to-be-adjusted sub-pixel pd, respectively, where the display panel further includes:
a second controllable switch module 320, said second controllable switch module 320 being electrically connected between the first node N1 of the adjustment sub-pixel Pit and the first electrode terminal of the light emitting element 200 of the adjustment sub-pixel pd, and the output terminal of the pixel driving circuit 100 of the adjustment sub-pixel Pit and the first controllable switch module 310 being electrically connected to the first node N1 of the adjustment sub-pixel Pit; wherein the second controllable switch module 320 is turned on or off in response to the second control signal K2.
It can be understood that, during the phase when the pixel driving circuit 100 outputs the driving current, i.e. during the light emitting phase R103, the first controllable switch module 310 and the second controllable switch module 320 between two connected sub-pixels are not simultaneously operated; at the first time, the first controllable switch module 310 controls the two first nodes N1 connected to each other to be connected, and the second controllable switch module 320 controls the output end of the pixel driving circuit 100 in the adjustment sub-pixel pin to be disconnected from the first electrode end of the light emitting element 200, so that the driving current of the adjustment sub-pixel pin flows into the light emitting element 200 of the sub-pixel pin to be adjusted at the first time, thereby ensuring high light emitting efficiency of the light emitting element 200 of the sub-pixel pin to be adjusted, and simultaneously controls the light emitting element 200 of the adjustment sub-pixel pin to be in an off state at the first time, thereby preventing the light emitting element 200 of the adjustment sub-pixel pin from being affected; at the second time, the first controllable switch module 310 controls the two first nodes N1 connected to each other to be disconnected, and the second controllable switch module 320 controls the output terminal of the pixel driving circuit 100 in the adjustment sub-pixel Pit to be connected to the first electrode terminal of the light emitting element 200, so as to ensure that the light emitting element 200 of the adjustment sub-pixel Pit is turned on.
Fig. 7 illustrates an example of the present invention including two sub-pixels, and when more sub-pixels are included, the first controllable switch module can be turned on in a time-sharing manner during the light-emitting period. Specifically, referring to fig. 8, a schematic diagram of a plurality of connected sub-pixels according to an embodiment of the present invention is provided, wherein, to avoid aliasing of the control signals, the following description uses the adjustment sub-pixel Pit1 corresponding to the first control signal labeled K1 and the second control signal labeled K2, and the adjustment sub-pixel Pit2 corresponding to the first control signal labeled K1 'and the second control signal labeled K2'. The connected sub-pixels include a sub-pixel to be adjusted Pid and two adjusting sub-pixels Pit1 and Pit 2. During the light-emitting period R103 of the pixel driving circuit 100, at the first time, the first control signal K1 controls the first controllable switch module 310 to connect the adjusting sub-pixel Pit1 and the first node N1 of the to-be-adjusted sub-pixel pd, and the second control signal K2 controls the second controllable switch module 320 to disconnect the output terminal of the pixel driving circuit 100 in the adjusting sub-pixel Pit1 from the first electrode terminal of the light-emitting element 200; meanwhile, the first control signal K1 'controls the first controllable switch module 310 to disconnect the connection between the adjusting subpixel Pit2 and the first node N1 of the to-be-adjusted subpixel pd, and the second control signal K2' controls the second controllable switch module 320 to connect the connection between the output terminal of the pixel driving circuit 100 in the adjusting subpixel Pit2 and the first electrode terminal of the light emitting element 200. Then, at the second time, the first control signal K1 controls the first controllable switch module 310 to disconnect the first node N1 between the adjustment subpixel Pit1 and the subpixel pd to be adjusted, and the second control signal K2 controls the second controllable switch module 320 to connect the output terminal of the pixel driving circuit 100 in the adjustment subpixel Pit1 and the first electrode terminal of the light emitting element 200; meanwhile, the first control signal K1 'controls the first controllable switch module 310 to connect the adjusting subpixel Pit2 to the first node N1 of the to-be-adjusted subpixel pd, and the second control signal K2' controls the second controllable switch module 320 to disconnect the output terminal of the pixel driving circuit 100 in the adjusting subpixel Pit2 from the first electrode terminal of the light emitting element 200.
In an embodiment of the present invention, the second controllable switch module can be implemented by a transistor. Referring to fig. 9, which is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention, the second controllable switch module 320 according to an embodiment of the present invention includes: a second controllable transistor M2, a first terminal of the second controllable transistor M2 is electrically connected to the first node N1, a second terminal of the second controllable transistor M2 is electrically connected to the first electrode terminal of the light emitting device 200, and a gate of the second controllable transistor M2 is connected to the second control signal K2.
In an embodiment of the present invention, the first controllable switch module may be implemented by a transistor. Referring to fig. 10, which is a schematic structural diagram of another connected sub-pixels according to an embodiment of the present invention, the first controllable switch module 310 according to an embodiment of the present invention includes: a first controllable transistor M1, a first end of the first controllable transistor M1 is electrically connected to the first node N1 of the adjustment sub-pixel, a second end of the first controllable transistor M1 is electrically connected to the first node N1 of the to-be-adjusted sub-pixel Pid, a gate of the first controllable transistor M1 is connected to the first control signal K1, and the first controllable transistor M1 and the second controllable transistor M2 have the same conduction type; the at least two sub-pixels include one sub-pixel to be adjusted Pit and a plurality of adjusting sub-pixels, such as an adjusting sub-pixel pd 1 and an adjusting sub-pixel pd 2, wherein a first control signal K1 corresponding to at least one adjusting sub-pixel (such as the adjusting sub-pixel pd 1) and a second control signal K2' corresponding to the remaining adjusting sub-pixels (such as the adjusting sub-pixel pd 2) are the same signal; and/or the second control signal K2 corresponding to the at least one adjusting sub-pixel (e.g., the adjusting sub-pixel Pid1) is the same as the first control signal K1' corresponding to the rest of the adjusting sub-pixels (e.g., the adjusting sub-pixel Pid 2).
It can be understood that, when the plurality of connected sub-pixels provided in the embodiment of the present invention include a plurality of adjustment sub-pixels, because the first controllable switch module corresponding to at least one adjustment sub-pixel is turned on in a time-sharing manner with the other first controllable switch modules, when the conduction types of the first controllable transistor and the second controllable transistor are the same, the second control signal corresponding to the at least one adjustment sub-pixel and the second control signal corresponding to the remaining adjustment sub-pixels are the same signal, and the second control signal corresponding to the at least one adjustment sub-pixel and the first control signal corresponding to the remaining adjustment sub-pixels are the same signal, thereby achieving the purpose of time-sharing controlling two sets of first controllable switch modules.
In the embodiment of the present invention, when the conduction types of the first controllable transistor and the second controllable transistor corresponding to the same adjustment sub-pixel are opposite (i.e., when the first controllable transistor is an N-type transistor, the second controllable transistor is a P-type transistor, or when the first controllable transistor is a P-type transistor, the second controllable transistor is an N-type transistor), and the conduction types of the first controllable transistor of at least one adjustment sub-pixel and the first controllable transistors of the remaining adjustment sub-pixels are opposite, all the first control signals and the second control signals provided in the embodiment of the present invention may be the same signal, so as to achieve the purpose of time-sharing control of different first controllable transistors. Referring to fig. 11, in a schematic structural view of another connected sub-pixels according to an embodiment of the present invention, if the first controllable transistor M1 between the adjusting sub-pixel Pit1 and the sub-pixel Pid to be adjusted is an N-type transistor, the corresponding second controllable transistor M2 is a P-type transistor; and, the first controllable transistor M1 between the adjustment subpixel Pit2 and the subpixel pd to be adjusted is a P-type transistor, and the corresponding second controllable transistor M2 is an N-type transistor, wherein the first control signal K1, the first control signal K1 ', the second control signal K2, and the second control signal K2' are common control signals. If the common control signal is at a low level for the first time in the light-emitting stage of the pixel driving circuit, the first controllable transistor M1 corresponding to the adjustment sub-pixel Pit1 is controlled to be turned off and the second controllable transistor M2 is controlled to be turned on; and simultaneously controls the first controllable transistor M1 corresponding to the adjusting sub-pixel Pit2 to be turned on and the second controllable transistor M2 to be turned off. When the common control signal is at a low level at the second time, the first controllable transistor M1 corresponding to the adjustment sub-pixel Pit1 is controlled to be turned on and the second controllable transistor M2 is controlled to be turned off; at the same time, the first controllable transistor M1 corresponding to the adjusting sub-pixel Pit2 is controlled to be turned off and the second controllable transistor M2 is controlled to be turned on, so that the process of transmitting the driving current to the light emitting element 200 of the sub-pixel to be adjusted pd in time sharing for the adjusting sub-pixels Pit1 and Pit2 is completed.
Referring to fig. 12, a schematic structural diagram of another display panel according to an embodiment of the present invention is shown, wherein in the at least two sub-pixels Pi provided by the present invention, the light-emitting efficiency a1 of the light-emitting element 200 of at least one of the sub-pixels Pi is smaller than the light-emitting efficiency a2 of the light-emitting elements 200 of the other sub-pixels Pi. Therefore, the first node N1 of the sub-pixel Pi with the light extraction efficiency of a1 is connected with the first node N1 of the sub-pixel Pi with the light extraction efficiency of a2, and the driving current of the sub-pixel Pi with the light extraction efficiency of a2 is shunted to flow to the light emitting element 200 of the sub-pixel Pi with the light extraction efficiency of a1 in the light emitting stage R103 of the pixel driving circuit 100, so that the light extraction efficiency of the light emitting element 200 of the sub-pixel Pi with the light extraction efficiency of a1 is improved, and the uniformity of display is ensured.
In an embodiment of the present invention, the light emitting elements of the sub-pixels provided by the invention include a red light emitting element, a green light emitting element, and a blue light emitting element, wherein the at least two sub-pixels include the red light emitting element, the green light emitting element, and the blue light emitting element, and then the driving current of the sub-pixel corresponding to the blue light and the driving current of the green light sub-pixel will flow into the light emitting element of the red light sub-pixel, so as to improve the light extraction efficiency of the red light emitting element. Or, the at least two sub-pixels include the red light emitting element and the green light emitting element, and then the driving current of the green sub-pixel flows into the light emitting element of the red sub-pixel, so as to improve the light extraction efficiency of the red light emitting element; or, the at least two sub-pixels include the red light emitting element and the blue light emitting element, and then the driving current of the blue sub-pixel flows into the light emitting element of the red sub-pixel, so as to improve the light extraction efficiency of the red light emitting element; or, the at least two sub-pixels include the green light emitting element and the blue light emitting element, and then the driving current of the green sub-pixel flows into the light emitting element of the blue sub-pixel, so that the light extraction efficiency of the blue light emitting element is improved.
In one embodiment of the present invention, the first nodes of the at least two sub-pixels are connected, so that the driving current of the sub-pixel with high light extraction efficiency can be shunted to the light emitting element of the sub-pixel with low light extraction efficiency, and thus, the channel width and the channel length of the driving transistor and the light emitting control transistor in the pixel driving circuit provided by the embodiment of the present invention can be reduced, the occupied area of the pixel driving circuit can be reduced, and the pixel density of the panel can be improved. The pixel driving circuit provided by the embodiment of the invention comprises a driving transistor, wherein the channel width of the driving transistor is 1-4 μm and comprises endpoint values; and the channel length of the driving transistor is 8-16 μm, inclusive. Preferably, the channel length of the driving transistor provided by the embodiment of the invention can be 8 μm, and the channel width can be 4 μm.
The pixel driving circuit provided by the embodiment of the invention comprises a driving transistor, a first light-emitting control transistor and a second light-emitting control transistor, wherein a first end of the first light-emitting control transistor is connected to a first power voltage, a second end of the first light-emitting control transistor is electrically connected with a first end of the driving transistor, and a grid electrode of the first light-emitting control transistor is connected to a light-emitting control signal; a first end of the second light emission control transistor is electrically connected to a second end of the driving transistor, a second end of the second light emission control transistor is electrically connected to a first electrode end of the light emitting element, and a gate of the second light emission control transistor is connected to the light emission control signal (specifically, refer to a schematic structural diagram of a pixel driving circuit shown in fig. 5). Wherein at least one of the first and second emission control transistors has a channel width of 1-4 μm inclusive; and, a channel length of 1-4 μm, inclusive. Preferably, the channel length of the light emission control transistor provided by the embodiment of the present invention may be 4 μm, and the channel width may be 4 μm.
Referring to fig. 13, a schematic structural diagram of another display panel according to an embodiment of the present invention is shown, wherein the plurality of sub-pixels Pi are arranged in a pixel array, and the display panel includes a first driving line 410 and a second driving line 420 respectively located at two sides of the pixel array in the row direction X of the sub-pixels Pi. The pixel array comprises a first row to an Nth row of the sub-pixels, wherein N is an integer greater than or equal to 1; any one of the first driving circuit and the second driving circuit includes a first output port to an nth output port, and the ith output port is electrically connected to the first controllable switch module 310 corresponding to the subpixel Pi in the ith row and is configured to output the first control signal K1.
In an embodiment of the present invention, the driving circuit provided in the present invention may be an independent driving circuit, or the driving circuit may also be a driving circuit for generating the light emitting control signal in a multiplexing manner.
Referring to fig. 14, which is a schematic structural diagram of another display panel according to an embodiment of the present invention, when the scheme provided by the embodiment of the present invention further includes a second controllable switch module 320, similarly, the display panel according to the embodiment of the present invention may include a first driving line 410 and a second driving line 420, where an i-th output port of any one driving line is electrically connected to the first controllable switch module 310 and the second controllable switch module 320 corresponding to the ith row of sub-pixels Pi, and is used for outputting a first control signal K1 and a second control signal K2, where the first driving line 410 and the second driving line 420 are independently prepared line structures.
In an embodiment of the present invention, the plurality of sub-pixels provided in the present invention are arranged in a pixel array, at least one row of the sub-pixels includes a plurality of pixel units, and the pixel units include a plurality of the sub-pixels; wherein all of the pixel units comprise the at least two sub-pixels. Alternatively, all the pixel units provided in the embodiment of the present invention include a plurality of first-type pixel units and a plurality of second-type pixel units, where the first-type pixel units include the at least two sub-pixels, and the first nodes of any two sub-pixels in the second-type pixel units are not electrically connected to the first controllable switch module.
Correspondingly, the embodiment of the invention also provides a driving method of the display panel, which is used for driving the display panel provided by any one of the embodiments. Referring to fig. 15, a flowchart of a driving method according to an embodiment of the present invention is shown, where the driving method includes:
and S1, scanning the plurality of sub-pixels.
S2, the first controllable switch module is turned on or off in response to the first control signal.
It can be understood that the first controllable switch module is connected between the first nodes of the at least two sub-pixels, and then, when the at least two sub-pixels are scanned, and when the driving current output from the pixel driving circuit of one of the sub-pixels to the light emitting element fluctuates, the purpose of stabilizing the fluctuating driving current can be achieved due to the inflow of the driving currents output from the other electrically connected pixel driving circuits, so that the stability of the pixel driving circuit is improved, and the display effect of the display device is improved.
In an embodiment of the present invention, the turning on or off of the first controllable switch module in response to the first control signal includes: the first controllable switch module is turned on in response to the first control signal during a light emitting phase of the light emitting element of the sub-pixel.
In an embodiment of the invention, when the display panel includes the second controllable switch module, the turning on or off of the first controllable switch module in response to the first control signal includes: in a light emitting phase of the light emitting element of the sub-pixel, the first controllable switch module corresponding to at least one of the adjusting sub-pixels is turned on for a preset time in response to the first control signal and then turned off, and the second controllable switch module corresponding to at least one of the adjusting sub-pixels is turned on after being turned off for the preset time in response to the second control signal, wherein the preset time is less than the duration of the light emitting phase. Furthermore, the purpose of controlling the conduction of the first controllable switch module in a time-sharing manner can be achieved, more driving current flows into the light-emitting element of the sub-pixel to be adjusted, the light-emitting efficiency of the light-emitting element of the sub-pixel to be adjusted is improved while the light-emitting element of the sub-pixel to be adjusted is ensured to be lightened.
Correspondingly, the embodiment of the invention also provides a display device, and the display device comprises the display panel provided by any one of the embodiments.
Referring to fig. 16, a schematic structural diagram of a display device according to an embodiment of the present invention is shown, where the display device 1000 according to the embodiment of the present invention may be a mobile terminal, and the display device 1000 includes a display panel according to any one of the embodiments.
It should be noted that the display device provided in the embodiment of the present invention may also be a notebook, a tablet, a computer, a wearable device, and the like, and the present invention is not limited in particular.
The embodiment of the invention provides a display panel, a driving method thereof and a display device, wherein the display panel comprises the following components: a plurality of sub-pixels including a pixel driving circuit and a light emitting element, a first electrode terminal of the light emitting element and an output terminal of the pixel driving circuit being electrically connected to a first node; and a first controllable switch module is electrically connected between the first nodes of at least two sub-pixels, wherein the first controllable switch module is turned on or off in response to a first control signal.
As can be seen from the above, in the technical solution provided in the embodiments of the present invention, the first controllable switch module is connected between the first nodes of the at least two sub-pixels, and further, when the driving current output from the pixel driving circuit of one of the sub-pixels to the light emitting element fluctuates during scanning of the at least two sub-pixels, due to the inflow of the driving currents output from the other electrically connected pixel driving circuits, the purpose of stabilizing the fluctuating driving current can be achieved, so that the stability of the pixel driving circuit is improved, and the display effect of the display device is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (17)
1. A display panel, comprising: a plurality of sub-pixels including a pixel driving circuit and a light emitting element, a first electrode terminal of the light emitting element and an output terminal of the pixel driving circuit being electrically connected to a first node;
and a first controllable switch module is electrically connected between the first nodes of at least two sub-pixels, wherein the first controllable switch module is turned on or off in response to a first control signal.
2. The display panel according to claim 1, wherein two of the sub-pixels electrically connected with the first controllable switch module are defined as a regulation sub-pixel and a to-be-regulated sub-pixel, respectively, wherein the first controllable switch module comprises: and a first end of the first controllable transistor is electrically connected with the first node of the adjustment sub-pixel, a second end of the first controllable transistor is electrically connected with the first node of the to-be-adjusted sub-pixel, and a grid electrode of the first controllable transistor is connected with the first control signal.
3. The display panel according to claim 2, wherein all the first controllable transistors in the same row of the sub-pixels have the same conduction type, and all the first control signals are the same control signal.
4. The display panel according to claim 2, wherein the pixel driving circuit comprises a driving transistor, a first light emitting control transistor and a second light emitting control transistor, a first end of the first light emitting control transistor is connected to a first power voltage, a second end of the first light emitting control transistor is electrically connected to a first end of the driving transistor, and a gate of the first light emitting control transistor is connected to a light emitting control signal;
a first end of the second light-emitting control transistor is electrically connected with a second end of the driving transistor, a second end of the second light-emitting control transistor is electrically connected with a first electrode end of the light-emitting element, and a grid electrode of the second light-emitting control transistor is connected with the light-emitting control signal;
in the sub-pixels in the same row, the conduction type of the first controllable transistor is the same as the conduction type of the first light-emitting control transistor and the conduction type of the second light-emitting control transistor, and the first control signal and the light-emitting control signal are the same signal.
5. The display panel according to claim 1, wherein two of the sub-pixels electrically connected with the first controllable switch module are defined as a regulation sub-pixel and a to-be-regulated sub-pixel, respectively, wherein the display panel further comprises:
a second controllable switch module electrically connected between the first node of the adjustment sub-pixel and the first electrode terminal of the light emitting element of the adjustment sub-pixel, and an output terminal of the pixel driving circuit of the adjustment sub-pixel and the first controllable switch module electrically connected to the first node of the adjustment sub-pixel;
wherein the second controllable switch module is turned on or off in response to a second control signal.
6. The display panel of claim 5, wherein the second controllable switch module comprises: and a second controllable transistor, a first terminal of which is electrically connected to the first node, a second terminal of which is electrically connected to the first electrode terminal of the light emitting element, and a gate of which is connected to the second control signal.
7. The display panel of claim 5, wherein the first controllable switch module comprises: a first controllable transistor, a first end of which is electrically connected with the first node of the adjustment sub-pixel, a second end of which is electrically connected with the first node of the to-be-adjusted sub-pixel, a gate of which is connected with the first control signal, and the conduction types of which are the same;
the at least two sub-pixels comprise one sub-pixel to be adjusted and a plurality of sub-pixels to be adjusted, wherein a first control signal corresponding to at least one sub-pixel to be adjusted and a second control signal corresponding to the rest of sub-pixels to be adjusted are the same signal; and/or the second control signal corresponding to the at least one adjusting sub-pixel and the first control signal corresponding to the rest adjusting sub-pixels are the same signal.
8. The display panel according to claim 1, wherein in the at least two sub-pixels, the light emitting efficiency of the light emitting element of at least one of the sub-pixels is smaller than the light emitting efficiency of the light emitting elements of the remaining sub-pixels.
9. The display panel according to claim 8, wherein the light emitting elements of the sub-pixels include a red light emitting element, a green light emitting element, and a blue light emitting element, wherein the red light emitting element, the green light emitting element, and the blue light emitting element are included in the at least two sub-pixels; alternatively, the first and second electrodes may be,
the at least two sub-pixels comprise the red light-emitting element and the green light-emitting element; alternatively, the first and second electrodes may be,
the at least two sub-pixels comprise the red light emitting element and the blue light emitting element; alternatively, the first and second electrodes may be,
the at least two sub-pixels include the green light emitting element and the blue light emitting element.
10. The display panel according to claim 1, wherein the pixel driving circuit comprises a driving transistor, wherein a channel width of the driving transistor is 1-4 μm, inclusive;
and the channel length of the driving transistor is 8-16 μm, inclusive.
11. The display panel according to claim 1, wherein the pixel driving circuit comprises a driving transistor, a first light emitting control transistor and a second light emitting control transistor, a first end of the first light emitting control transistor is connected to a first power voltage, a second end of the first light emitting control transistor is electrically connected to a first end of the driving transistor, and a gate of the first light emitting control transistor is connected to a light emitting control signal; a first end of the second light-emitting control transistor is electrically connected with a second end of the driving transistor, a second end of the second light-emitting control transistor is electrically connected with a first electrode end of the light-emitting element, and a grid electrode of the second light-emitting control transistor is connected with the light-emitting control signal;
wherein at least one of the first and second emission control transistors has a channel width of 1-4 μm inclusive; and, a channel length of 1-4 μm, inclusive.
12. The display panel according to claim 1, wherein the plurality of sub-pixels are arranged in a pixel array, and the display panel includes a first driving line and a second driving line respectively located at both sides of the pixel array in the sub-pixel row direction;
the pixel array comprises a first row to an Nth row of the sub-pixels, wherein N is an integer greater than or equal to 1; any one of the first driving circuit and the second driving circuit comprises a first output port to an Nth output port, and the ith output port is electrically connected with the first controllable switch module corresponding to the sub-pixel in the ith row and is used for outputting the first control signal.
13. The display panel of claim 1, wherein the plurality of sub-pixels are arranged in a pixel array, at least one row of the sub-pixels comprises a plurality of pixel units, and the pixel units comprise a plurality of the sub-pixels;
wherein all of the pixel units comprise the at least two sub-pixels; alternatively, the first and second electrodes may be,
all the pixel units comprise a plurality of first-class pixel units and a plurality of second-class pixel units, the first-class pixel units comprise at least two sub-pixels, and first nodes of any two sub-pixels in the second-class pixel units are not electrically connected with the first controllable switch module.
14. A driving method of a display panel for driving the display panel according to any one of claims 1 to 13, the driving method comprising:
scanning the plurality of sub-pixels;
the first controllable switch module is turned on or off in response to the first control signal.
15. The method according to claim 14, wherein the turning on or off of the first controllable switch module in response to the first control signal comprises:
the first controllable switch module is turned on in response to the first control signal during a light emitting phase of the light emitting element of the sub-pixel.
16. The method according to claim 15, wherein when the display panel includes the second controllable switch module, the first controllable switch module is turned on or off in response to the first control signal, and the method comprises:
in a light emitting phase of the light emitting element of the sub-pixel, the first controllable switch module corresponding to at least one of the adjusting sub-pixels is turned on for a preset time in response to the first control signal and then turned off, and the second controllable switch module corresponding to at least one of the adjusting sub-pixels is turned on after being turned off for the preset time in response to the second control signal, wherein the preset time is less than the duration of the light emitting phase.
17. A display device characterized in that it comprises a display panel according to any one of claims 1 to 13.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115482779A (en) * | 2022-09-26 | 2022-12-16 | 武汉天马微电子有限公司 | Pixel circuit, driving method thereof and display device |
| CN117912411A (en) * | 2024-03-19 | 2024-04-19 | 惠科股份有限公司 | Display panel and display device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100007645A1 (en) * | 2007-06-15 | 2010-01-14 | Panasonic Corporation | Image display device |
| CN106940978A (en) * | 2017-05-15 | 2017-07-11 | 上海天马有机发光显示技术有限公司 | Organic electroluminescence display panel and its driving method, organic light-emitting display device |
| WO2017117983A1 (en) * | 2016-01-04 | 2017-07-13 | 京东方科技集团股份有限公司 | Pixel compensation circuit and amoled display device |
| CN107591124A (en) * | 2017-09-29 | 2018-01-16 | 上海天马微电子有限公司 | Pixel compensation circuit, organic electroluminescence display panel and organic light-emitting display device |
| CN110728946A (en) * | 2018-06-29 | 2020-01-24 | 京东方科技集团股份有限公司 | Pixel circuit, driving method thereof and display panel |
| CN111899684A (en) * | 2020-08-07 | 2020-11-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2021051490A1 (en) * | 2019-09-16 | 2021-03-25 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display device |
| CN113012643A (en) * | 2021-03-01 | 2021-06-22 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
| WO2021218918A1 (en) * | 2020-04-30 | 2021-11-04 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method therefor, display substrate, and display device |
-
2021
- 2021-12-31 CN CN202111676474.4A patent/CN114299867B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100007645A1 (en) * | 2007-06-15 | 2010-01-14 | Panasonic Corporation | Image display device |
| WO2017117983A1 (en) * | 2016-01-04 | 2017-07-13 | 京东方科技集团股份有限公司 | Pixel compensation circuit and amoled display device |
| CN106940978A (en) * | 2017-05-15 | 2017-07-11 | 上海天马有机发光显示技术有限公司 | Organic electroluminescence display panel and its driving method, organic light-emitting display device |
| CN107591124A (en) * | 2017-09-29 | 2018-01-16 | 上海天马微电子有限公司 | Pixel compensation circuit, organic electroluminescence display panel and organic light-emitting display device |
| CN110728946A (en) * | 2018-06-29 | 2020-01-24 | 京东方科技集团股份有限公司 | Pixel circuit, driving method thereof and display panel |
| WO2021051490A1 (en) * | 2019-09-16 | 2021-03-25 | 深圳市华星光电半导体显示技术有限公司 | Pixel driving circuit and display device |
| WO2021218918A1 (en) * | 2020-04-30 | 2021-11-04 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method therefor, display substrate, and display device |
| CN111899684A (en) * | 2020-08-07 | 2020-11-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| WO2022027733A1 (en) * | 2020-08-07 | 2022-02-10 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113012643A (en) * | 2021-03-01 | 2021-06-22 | 上海天马微电子有限公司 | Display panel, driving method thereof and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115482779A (en) * | 2022-09-26 | 2022-12-16 | 武汉天马微电子有限公司 | Pixel circuit, driving method thereof and display device |
| CN117912411A (en) * | 2024-03-19 | 2024-04-19 | 惠科股份有限公司 | Display panel and display device |
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| Publication number | Publication date |
|---|---|
| CN114299867B (en) | 2023-06-06 |
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