CN114170959A - Pixel driving circuit and display panel - Google Patents
Pixel driving circuit and display panel Download PDFInfo
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- CN114170959A CN114170959A CN202111418843.XA CN202111418843A CN114170959A CN 114170959 A CN114170959 A CN 114170959A CN 202111418843 A CN202111418843 A CN 202111418843A CN 114170959 A CN114170959 A CN 114170959A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
Abstract
The invention discloses a pixel driving circuit and a display panel. A pixel driving circuit, comprising: the device comprises a driving module, a threshold compensation module, a data writing module, a first initialization module, a first storage module, a second storage module and a light-emitting module; the data writing module is used for writing the data voltage signal into the driving module; the driving module is used for generating driving current, and the light-emitting module is used for responding to the driving current to emit light; the threshold compensation module is used for capturing the threshold voltage of the driving module to the control end of the driving module and comprises a first double-gate transistor; the first initialization module is used for initializing the driving module and comprises a second double-gate transistor; the first storage module is used for maintaining the electric potential of the control end of the driving module; the second memory module is configured to couple the first power signal to a dual gate node of the first dual-gate transistor and a dual gate node of the second dual-gate transistor. The technical scheme of the invention improves the display effect of the display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a pixel driving circuit and a display panel.
Background
With the development of display technology, the application of display panels is more and more extensive, and the corresponding requirements on display panels are also higher and higher.
The conventional display panel causes unstable potential of the control end of the driving module when some modules are turned off, so that the display brightness of the light emitting module is changed, and the display image quality is influenced.
Disclosure of Invention
The invention provides a pixel driving circuit and a display panel, which are used for improving the display effect of the display panel.
In a first aspect, an embodiment of the present invention provides a pixel driving circuit, where the pixel driving circuit includes: the device comprises a driving module, a threshold compensation module, a data writing module, a first initialization module, a first storage module, a second storage module and a light-emitting module;
the data writing module is used for writing a data voltage signal into the driving module;
the driving module is used for generating a driving current, and the light-emitting module is used for responding to the driving current to emit light;
the threshold compensation module is used for capturing the threshold voltage of the driving module to the control end of the driving module, and comprises a first double-gate transistor;
the first initialization module is used for initializing the driving module and comprises a second double-gate transistor;
the first storage module is used for maintaining the potential of the control end of the driving module;
the second storage module is to couple a first power supply signal to a dual gate node of the first dual gate transistor and a dual gate node of the second dual gate transistor.
Optionally, the first double-gate transistor includes a first sub-transistor and a second sub-transistor, a control end of the first sub-transistor and a control end of the second sub-transistor both access a first scan signal, a first end of the first sub-transistor is electrically connected to a first end of the driving module, a second end of the first sub-transistor is electrically connected to a first end of the second sub-transistor, and a second end of the second sub-transistor is electrically connected to a control end of the driving module;
the second double-gate transistor comprises a third sub-transistor and a fourth sub-transistor, a control end of the third sub-transistor and a control end of the fourth sub-transistor are both connected with a second scanning signal, a first end of the third sub-transistor is connected with an initialization signal, a second end of the third sub-transistor is electrically connected with a first end of the fourth sub-transistor, and a second end of the fourth sub-transistor is electrically connected with a control end of the driving module;
the first end of the second storage module is connected to the first power supply signal, the second end of the second storage module is electrically connected with the second end of the third sub transistor, and the second end of the second storage module is also electrically connected with the second end of the first sub transistor;
a first end of the data writing module is connected with a data voltage signal, a control end of the data writing module is connected with the first scanning signal, and a second end of the data writing module is electrically connected with a second end of the driving module;
the control end of the driving module is electrically connected with the first end of the first storage module, the second end of the first storage module is connected with the first power supply signal, the first end of the driving module is electrically connected with the first end of the light-emitting module, and the second end of the light-emitting module is connected with the second power supply signal.
Optionally, a channel width-to-length ratio of the first sub-transistor is less than or equal to 0.45;
and/or the channel width-length ratio of the third sub-transistor is less than or equal to 0.45.
Optionally, the first storage module includes a first capacitor, a first end of the first capacitor is a first end of the first storage module, and a second end of the first capacitor is a second end of the first storage module;
the second storage module comprises a second capacitor, the first end of the second capacitor is the first end of the second storage module, and the second end of the second capacitor is the second end of the second storage module.
Optionally, the first capacitor comprises two opposing first plates; the second capacitor comprises two opposite second polar plates;
the area of the first polar plate is smaller than that of the second polar plate.
Optionally, the pixel driving circuit further comprises a second initialization module;
the control end of the second initialization module is connected to a third scanning signal, the first end of the second initialization module is connected to the initialization signal, the second end of the second initialization module is electrically connected to the first end of the light emitting module, and the second initialization module is used for initializing the light emitting module in a second initialization stage.
Optionally, the pixel driving circuit further includes a first light emission control module and a second light emission control module;
a control end of the first light emitting control module is connected with a first enabling signal, a first end of the first light emitting control module is connected with the first power supply signal, and a second end of the first light emitting control module is electrically connected with a second end of the driving module;
the first end of the driving module is electrically connected with the first end of the light-emitting module through the second light-emitting control module, the control end of the second light-emitting control module is connected to the first enabling signal, and the first light-emitting control module and the second light-emitting control module are used for controlling the light-emitting module to emit light in response to the driving current in a light-emitting stage.
Optionally, the pixel driving circuit further includes a third initialization module;
the control end of the third initialization module is connected to a third scanning signal, the first end of the third initialization module is connected to the initialization signal, the second end of the third initialization module is electrically connected to the second end of the driving module, and the third initialization module is used for initializing the second end of the driving module in a second initialization stage.
Optionally, the pixel driving circuit further includes a third light emission control module and a fourth light emission control module;
a control end of the third light-emitting control module is connected with a second enabling signal, a first end of the third light-emitting control module is connected with the first power supply signal, and a second end of the third light-emitting control module is electrically connected with a second end of the driving module;
the first end of the driving module is electrically connected with the first end of the light-emitting module through the fourth light-emitting control module, the control end of the fourth light-emitting control module is connected with a third enabling signal, the third light-emitting control module and the fourth light-emitting control module are used for controlling the light-emitting module to respond to the driving current to emit light in the light-emitting stage, and the second initialization module is further used for initializing the first end of the driving module through the fourth light-emitting control module in the second initialization stage.
In a second aspect, an embodiment of the present invention further provides a display panel, where the display panel includes the pixel driving circuit described in any of the first aspects.
The pixel driving circuit of the present invention includes: the device comprises a driving module, a threshold compensation module, a data writing module, a first initialization module, a first storage module, a second storage module and a light-emitting module, wherein in the threshold compensation stage, the data writing module writes a data voltage signal into the driving module, and the threshold compensation module can capture the threshold voltage of the driving module to the control end of the driving module to realize the compensation of the threshold voltage; the first storage module can maintain the electric potential of the control end of the driving module to avoid the electric potential of the control end of the driving module being coupled to change when the first initialization module is turned off, the second storage module can couple the first power supply signal to the double-gate node of the first double-gate transistor and the double-gate node of the second double-gate transistor to maintain the electric potentials of the double-gate node of the first double-gate transistor and the double-gate node of the second double-gate transistor, so that the electric potential difference between the control end of the driving module and the double-gate node of the first double-gate transistor is almost unchanged, and the electric potential difference between the control end of the driving module and the double-gate node of the second double-gate transistor is almost unchanged, so that the leakage current in the pixel driving circuit is reduced, the control end of the driving module can maintain a stable state, and the display brightness of the display panel is not changed, the display effect of the display panel is improved. The invention solves the problem that the display brightness of the light-emitting module is changed to influence the display image quality due to unstable electric potential of the control end of the driving module when some modules are switched off, improves the picture quality of the display panel and improves the display effect of the display panel.
Drawings
Fig. 1 is a schematic structural diagram of a pixel driving circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the invention;
FIG. 4 is a timing diagram of a pixel driving circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the present invention;
FIG. 6 is a timing diagram of a pixel driving circuit according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the conventional display panel has a problem of poor picture quality, and the applicant has found through careful study that the reason for this technical problem is that: in a pixel driving circuit of a display panel, the off current of some modules during off causes the potential of a control end of a driving module to be unstable, so that the display brightness of the display panel is changed, the picture quality of the display panel is influenced, and the problem of screen flicker occurs.
In view of the above problem, an embodiment of the present invention provides a pixel driving circuit, and fig. 1 is a schematic structural diagram of the pixel driving circuit provided in the embodiment of the present invention, and referring to fig. 1, the pixel driving circuit includes: a driving module 101, a threshold compensation module 102, a data writing module 103, a first initialization module 104, a first storage module 105, a second storage module 106, and a light emitting module 107; the data writing module 103 is configured to write a data voltage signal Vdata into the driving module 101; the driving module 101 is used for generating a driving current, and the light emitting module 107 is used for emitting light in response to the driving current; the threshold compensation module 102 is configured to capture a threshold voltage of the driving module 101 to a control terminal a of the driving module 101, and the threshold compensation module 102 includes a first double-gate transistor T1; the first initialization module 104 is used for initializing the driving module 101, and the first initialization module 104 includes a second double-gate transistor T2; the first storage module 105 is used for maintaining the potential of the control terminal a of the driving module 101; the second memory module 106 is for coupling the first power supply signal VDD to the dual gate node B1 of the first dual gate transistor T1 and the dual gate node B2 of the second dual gate transistor T2.
The Light Emitting module 107 can be, for example, an Organic Light-Emitting Diode (OLED), the OLED is a current-type device and can emit Light only under the action of a driving current, and the driving module 101 can generate a corresponding driving current according to the data voltage signal Vdata to drive the Light Emitting module 107 to display different gray scales, so that the display panel can display a picture to be displayed.
Specifically, in the first initialization stage, the first initialization module 104 is turned on, and the first initialization module 104 can initialize the driving module 101, so that the residual charge of the previous frame of picture can be removed, and the display effect of the display panel can be improved;
in the threshold compensation stage, the first initialization module 104 is turned off, the data writing module 103 and the threshold compensation module 102 are turned on, the data writing module 103 writes the data voltage signal Vdata into the driving module 101, and the threshold compensation module 102 can capture the threshold voltage of the driving module 101 to the control end a of the driving module 101 to realize the compensation of the threshold voltage; and the first storage module 105 may maintain the potential of the control terminal a of the driving module 101 to prevent the potential of the control terminal a of the driving module 101 from being coupled to change when the first initialization module 104 is turned off, and the second storage module 106 may couple the first power signal VDD to the dual gate node B1 of the first dual gate transistor T1 and the dual gate node B2 of the second dual gate transistor T2 to maintain the potentials of the dual gate node B1 of the first dual gate transistor T1 and the dual gate node B2 of the second dual gate transistor T2, so that the potential difference between the control terminal a of the driving module 101 and the dual gate node B1 of the first dual gate transistor T1 is almost unchanged and the potential difference between the control terminal a of the driving module 101 and the dual gate node B2 of the second dual gate transistor T2 is almost unchanged to reduce the leakage current in the pixel driving circuit to allow the first initialization module 104 to be turned off, the control terminal a of the driving module 101 can maintain a stable state, so that the display brightness of the display panel is not changed, thereby improving the display effect of the display panel;
in the light emitting stage, the driving module 101 generates a driving current according to the data voltage signal Vdata, and the light emitting module 107 emits light in response to the driving current, thereby displaying the luminance to be displayed.
In the technical solution of this embodiment, the pixel driving circuit includes: the device comprises a driving module, a threshold compensation module, a data writing module, a first initialization module, a first storage module, a second storage module and a light-emitting module, wherein in the threshold compensation stage, the data writing module writes a data voltage signal into the driving module, and the threshold compensation module can capture the threshold voltage of the driving module to the control end of the driving module to realize the compensation of the threshold voltage; the first storage module can maintain the electric potential of the control end of the driving module to avoid the electric potential of the control end of the driving module being coupled to change when the first initialization module is turned off, the second storage module can couple the first power supply signal to the double-gate node of the first double-gate transistor and the double-gate node of the second double-gate transistor to maintain the electric potentials of the double-gate node of the first double-gate transistor and the double-gate node of the second double-gate transistor, so that the electric potential difference between the control end of the driving module and the double-gate node of the first double-gate transistor is almost unchanged, and the electric potential difference between the control end of the driving module and the double-gate node of the second double-gate transistor is almost unchanged, so that the leakage current in the pixel driving circuit is reduced, the control end of the driving module can maintain a stable state, and the display brightness of the display panel is not changed, the display effect of the display panel is improved. The technical scheme of the embodiment solves the problems that the display brightness of the light emitting module is changed and the display image quality is influenced due to unstable electric potential of the control end of the driving module when some modules are turned off, improves the picture quality of the display panel and improves the display effect of the display panel.
With continued reference to fig. 1, the first double-gate transistor T1 includes a first sub-transistor T11 and a second sub-transistor T12, a control terminal of the first sub-transistor T11 and a control terminal of the second sub-transistor T12 both receive the first Scan signal Scan1, a first terminal of the first sub-transistor T11 is electrically connected to the first terminal C of the driving module 101, a second terminal of the first sub-transistor T11 is electrically connected to the first terminal of the second sub-transistor T12, and a second terminal of the second sub-transistor T12 is electrically connected to the control terminal a of the driving module 101; the second double-gate transistor T2 includes a third sub-transistor T21 and a fourth sub-transistor T22, a control terminal of the third sub-transistor T21 and a control terminal of the fourth sub-transistor T22 are both connected to the second Scan signal Scan2, a first terminal of the third sub-transistor T21 is connected to the initialization signal Vref, a second terminal of the third sub-transistor T21 is electrically connected to a first terminal of the fourth sub-transistor T22, and a second terminal of the fourth sub-transistor T22 is electrically connected to the control terminal a of the driving module 101; a first terminal of the second memory module 106 is connected to the first power signal VDD, a second terminal of the second memory module 106 is electrically connected to a second terminal of the third sub-transistor T21, and a second terminal of the second memory module 106 is further electrically connected to a second terminal of the first sub-transistor T11; a first end of the data writing module 103 is connected to the data voltage signal Vdata, a control end of the data writing module 103 is connected to the first scanning signal Scan1, and a second end of the data writing module 103 is electrically connected to a second end of the driving module 101; the control terminal a of the driving module 101 is electrically connected to the first terminal of the first storage module 105, the second terminal of the first storage module 105 is connected to the first power signal VDD, the first terminal C of the driving module 101 is electrically connected to the first terminal of the light emitting module 107, and the second terminal of the light emitting module 107 is connected to the second power signal VSS.
Specifically, the first power signal VDD and the second power signal VSS are voltages with different high and low levels, typically, the first power signal VDD is at a high level, and the second power signal VSS is at a low level, so as to provide a required current path for the light emitting module 107 to emit light in the light emitting phase. The second terminal of the first sub-transistor T11 is the dual-gate node B1 of the first dual-gate transistor T1, the second terminal of the third sub-transistor T21 is the dual-gate node B2 of the second dual-gate transistor T2, and the second storage module 106 may couple the first power signal VDD to the dual-gate node B1 of the first dual-gate transistor T1 and the dual-gate node B2 of the second dual-gate transistor T2 to maintain the potentials of the dual-gate node B1 of the first dual-gate transistor T1 and the dual-gate node B2 of the second dual-gate transistor T2, thereby maintaining the potential of the control terminal a of the driving module 101, so that the potential change of the second Scan signal Scan2 does not cause the potential difference between the dual-gate node B1 of the first dual-gate transistor T1, the dual-gate node B3742 of the second dual-gate transistor T and the control terminal a of the driving module 101 to be almost unchanged when the first initialization module 104 is turned off, so that the potential difference between the dual-gate node B1 and the control terminal a of the driving module T1 is not changed. And the potential difference between the dual-gate node B2 of the second dual-gate transistor T2 and the control terminal a of the driving module 101 is almost unchanged, and the potential difference between the dual-gate node B1 of the first dual-gate transistor T1 and the first terminal C of the driving module 101 is almost unchanged, so that the leakage current is reduced, the stability of the driving module 101 is maintained, the flicker of the picture is avoided, and the picture quality of the display panel is improved.
Alternatively, the channel width-to-length ratio of the first sub-transistor T11 is equal to or less than 0.45; and/or, the channel width-to-length ratio of the third sub-transistor T21 is equal to or less than 0.45.
Specifically, the width of the channel of the first sub-transistor T11 is, for example, 1.8 μm or less, the length of the channel of the first sub-transistor T11 is, for example, 4 μm or more, so that the channel width-to-length ratio of the first sub-transistor T11 is 0.45 or less, thereby reducing the leakage current of the first sub-transistor T11, so that the potential of the dual gate node B1 of the first dual gate transistor T1 can be maintained, so that when the first initialization module 104 is turned off, the change of the potential of the second Scan signal Scan2 does not cause the change of the potentials of the dual-gate node B1 of the first dual-gate transistor T1 and the control terminal a of the driving module 101, so that the potential difference between the dual gate node B1 of the first dual gate transistor T1 and the control terminal a of the driving module 101 is almost constant, and the potential difference between the dual gate node B1 of the first dual gate transistor T1 and the first terminal C of the driving module 101 is almost constant, thereby maintaining the potential of the control terminal a of the driving module 101.
The width of the channel of the third sub-transistor T21 is, for example, 1.8 μm or less, the length of the channel of the first sub-transistor T11 is, for example, 4 μm or more, and the channel width-to-length ratio of the third sub-transistor T21 is 0.45 or less, so that the leakage current of the third sub-transistor T21 is reduced, and thus the potential of the dual-gate node B2 of the second dual-gate transistor T2 can be maintained, so that the potential difference between the dual-gate node B1 of the first dual-gate transistor T1 and the control terminal a of the driving module 101 is almost constant, and thus the potential of the control terminal a of the driving module 101 is maintained.
Fig. 2 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the invention, and optionally, referring to fig. 2, the first memory module 105 includes a first capacitor C1, a first terminal of the first capacitor C1 is a first terminal of the first memory module 105, and a second terminal of the first capacitor C1 is a second terminal of the first memory module 105; the second memory module 106 includes a second capacitor C2, a first terminal of the second capacitor C2 is a first terminal of the second memory module 106, and a second terminal of the second capacitor C2 is a second terminal of the second memory module 106.
Specifically, the capacitor has a capability of storing charges, so the first capacitor C1 can maintain the potential of the control terminal a of the driving module 101, the second capacitor C2 can couple the first power signal VDD to the potentials of the dual-gate node B1 of the first dual-gate transistor T1 and the dual-gate node B2 of the second dual-gate transistor T2, so that when the first initialization module 104 is turned off, the potential change of the second Scan signal Scan2 does not cause the potential change of the dual-gate node B1 of the first dual-gate transistor T1, the dual-gate node B2 of the second dual-gate transistor T2 and the control terminal a of the driving module 101, so that the potential difference between the dual-gate node B1 of the first dual-gate transistor T1 and the control terminal a of the driving module 101 is almost constant, and the potential difference between the dual-gate node B2 of the second dual-gate transistor T2 and the control terminal a of the driving module 101 is almost constant, and the potential difference between the dual-gate node B3638 of the first dual-gate transistor T1 and the control terminal a of the driving module 1 is almost constant, thereby reducing the leakage current and maintaining the stability of the driving module 101, thereby avoiding the flicker of the picture and improving the picture quality of the display panel.
Optionally, the first capacitor C1 includes two opposing first plates; the second capacitor C2 includes two opposite second plates; the area of the first polar plate is smaller than that of the second polar plate.
Specifically, the first capacitor C1 may maintain the potential of the control terminal of the driving module 101; when the first initialization module 104 is turned off, the second capacitor C2 may maintain the potential of the dual-gate node B1 of the first dual-gate transistor T1, so that the potential difference between the control terminal of the driving module 101 and the dual-gate node B1 of the first dual-gate transistor T1 is almost unchanged, thereby maintaining the potential of the control terminal of the driving module 101; moreover, when the driving module 101 generates the driving current, the potential of the first terminal C of the driving module 101 may change, and the second capacitor C2 may maintain the potential of the dual-gate node B1 of the first dual-gate transistor T1, so that the potential of the dual-gate node B1 of the first dual-gate transistor T1 may not change due to the change of the potential of the first terminal C of the driving module 101, thereby maintaining the potential of the control terminal of the driving module 101, so that the capacity of the second capacitor C2 may be increased, so that the second capacitor C2 may better maintain the potential of the dual-gate node B1 of the first dual-gate transistor T1 when the first initializing module 104 is turned off and during the light emitting period, thereby better maintaining the potential of the control terminal of the driving module 101, so that the area of the first plate of the first capacitor C1 may be set smaller than the area of the second substrate of the second capacitor C2, thereby better maintaining the potential of the control terminal of the driving module 101, layout space can be reduced, the area of the display panel can be reduced, and the display panel can not be too large in size even if two capacitors are arranged.
Fig. 3 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the present invention, and optionally, referring to fig. 3, the pixel driving circuit further includes a second initialization module 108; the control terminal of the second initialization module 108 is connected to the third Scan signal Scan3, the first terminal of the second initialization module 108 is connected to the initialization signal Vref, the second terminal of the second initialization module 108 is electrically connected to the first terminal of the light emitting module 107, and the second initialization module 108 is configured to initialize the light emitting module 107 in the second initialization stage.
Specifically, the second initialization module 108 may write the initialization signal Vref into the first end of the light emitting module 107, so as to initialize the light emitting module 107, and may clear the residual charges of the previous frame of picture, so that the light emitting module 107 may more accurately display the luminance to be displayed, thereby improving the picture quality of the display panel. In other embodiments, the control terminal of the second initialization module 108 may also access the first Scan signal Scan1 or the second Scan signal Scan2, so that the second initialization module 108 may initialize the light emitting module 107 in the first initialization stage or the threshold compensation stage, which may reduce the number of Scan lines and achieve the effect of simplifying the layout.
Optionally, referring to fig. 3, the pixel driving circuit further includes a first light emission control module 109 and a second light emission control module 110; a control end of the first light emitting control module 109 is connected to the first enable signal EM1, a first end of the first light emitting control module 109 is connected to the first power signal VDD, and a second end of the first light emitting control module 109 is electrically connected to a second end of the driving module 101; the first end of the driving module 101 is electrically connected to the first end of the light emitting module 107 through the second light emitting control module 110, the control end of the second light emitting control module 110 is connected to the first enable signal EM1, and the first light emitting control module 109 and the second light emitting control module 110 are configured to control the light emitting module 107 to emit light in response to the driving current in the light emitting phase.
Specifically, in the light emitting phase, the first enable signal EM1 controls the first light emitting control module 109 and the second light emitting control module 110 to be turned on, so that the light emitting module 107 can obtain the driving current generated by the driving module 101, and the light emitting module 107 can emit light according to the driving current to display the luminance to be displayed. In the light emitting stage, in order to control the first light emitting control module 109 and the second light emitting control module 110 to be turned on, the first enable signal EM1 may increase or decrease to possibly cause a change in the potential of the first end C of the driving module 101, and since the second storage module 106 may maintain the potential of the dual-gate node B1 of the first dual-gate transistor T1, the channel width and length of the first sub-transistor T11 are relatively small, and the leakage current of the first sub-transistor T11 is relatively small, the change in the potential of the first end C of the driving module 101 may not cause a change in the potential of the dual-gate node B1 of the first dual-gate transistor T1, so that the potential difference between the dual-gate node B1 of the first dual-gate transistor T1 and the control end a of the driving module 101 is almost unchanged, and the potential of the control end of the driving module 101 may be kept stable.
Fig. 4 is a timing diagram of a pixel driving circuit according to an embodiment of the invention, referring to fig. 3 and 4, in a first initialization period t1, when the second Scan signal Scan2 is at a low level, the first initialization module 104 is turned on, and the first initialization module 104 initializes the driving module 101; in the threshold compensation stage t2, the first Scan signal Scan1 is at a low level, the data write module 103 and the threshold compensation module 102 are turned on, the data write module 103 writes the data voltage signal Vdata into the driving module 101, and the threshold compensation module 102 can capture the threshold voltage of the driving module 101 to the control terminal a of the driving module 101 to implement the compensation of the threshold voltage; the first memory module 105 may maintain the voltage level of the control terminal a of the driving module 101, so as to prevent the voltage level of the control terminal a of the driving module 101 from being coupled to change when the first initialization module 104 is turned off, and the second memory module 106 may couple the first power signal VDD to the dual-gate node B1 of the first dual-gate transistor T1 and the dual-gate node B2 of the second dual-gate transistor T2, so as to maintain the voltage levels of the dual-gate node B1 of the first dual-gate transistor T1 and the dual-gate node B2 of the second dual-gate transistor T2; in the second initialization period t3, the third Scan signal Scan3 is at a low level, the second initialization module 108 is turned on, and the second initialization module 108 can initialize the light emitting module 107; in the light-emitting period t4, the first enable signal EM1 is at a low level, the first light-emitting control module 109 and the second light-emitting control module 110 are turned on, the driving module 101 generates a driving current, and the light-emitting module 107 emits light in response to the driving current.
Fig. 4 only shows a case where all the blocks are turned on at a low level, but the present invention is not limited thereto, and in some other embodiments, the types of the turn-on levels of the blocks may be opposite to those of the present embodiment.
Fig. 5 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the present invention, and optionally, referring to fig. 5, the pixel driving circuit further includes a third initialization module 111; the control terminal of the third initialization module 111 is connected to the third Scan signal Scan3, the first terminal of the third initialization module 111 is connected to the initialization signal Vref, the second terminal of the third initialization module 111 is electrically connected to the second terminal of the driving module 101, and the third initialization module 111 is configured to initialize the second terminal of the driving module 101 in the second initialization stage.
Specifically, in the second initialization stage, the third Scan signal Scan3 controls the third initialization module 111 to be turned on, so that the third initialization module 111 can write the initialization signal into the second end of the driving module 101, thereby initializing the second end of the driving module 101, and thus ensuring that the control end of the driving module 101 and the second end of the driving module 101 have the same potential before the light emitting module 107 emits light in each frame, so that the display brightness of each frame is kept consistent, thereby improving the display effect of the display panel.
Alternatively, referring to fig. 5, the pixel driving circuit further includes a third light emission control module 112 and a fourth light emission control module 113; a control end of the third light emitting control module 112 is connected to the second enable signal EM2, a first end of the third light emitting control module 112 is connected to the first power signal VDD, and a second end of the third light emitting control module 112 is electrically connected to a second end of the driving module 101; the first end of the driving module 101 is electrically connected to the first end of the light emitting module 107 through a fourth light emitting control module 113, the control end of the fourth light emitting control module 113 is connected to the third enable signal EM3, the third light emitting control module 112 and the fourth light emitting control module 113 are configured to control the light emitting module 107 to emit light in response to the driving current in the light emitting phase, and the second initialization module 108 is further configured to initialize the first end of the driving module 101 through the fourth light emitting control module 113 in the second initialization phase.
Specifically, in the second initialization phase, the third Scan signal Scan3 controls the second initialization module 108 and the third initialization module 111 to be turned on, the second initialization module 108 may initialize the light emitting module 107, the third initialization module 111 may initialize the second end of the driving module 101, meanwhile, the fourth light-emitting control module 113 is turned on, so that the second initialization module 108 can write the initialization signal Vref into the first end of the driving module 101 through the fourth light-emitting control module 113, and the control end of the driving module 101, the first end of the driving module 101, and the second end of the driving module 101 are all the initialization signal Vref, thereby ensuring that in each frame, before the light emitting module 107 emits light, the control end of the driving module 101, the first end of the driving module 101 and the second end of the driving module 101 have the same potential, so that the display brightness of each frame is kept consistent, and the display effect of the display panel is improved.
Fig. 6 is a timing diagram of another pixel driving circuit according to an embodiment of the invention, referring to fig. 5 and fig. 6, when the refresh frequency is low, for example, the refresh frequency is f, the data refresh frequency can be f, and the display frequency is 4f, that is, the driving circuit of the pixel driving circuit can be divided into four stages of T1, T2, T3 and T4, in the stage of T1, the first initialization stage T11, the second Scan signal Scan2 is at a low level, and the first initialization module 104 can initialize the control terminal of the driving module 101; in the threshold compensation stage T12, the first Scan signal Scan1 is at a low level, the data write module 103 can write the data voltage signal into the driving module 101, the threshold compensation module 102 can capture the threshold voltage of the driving module 101 to the control terminal of the driving module 101 to implement threshold compensation, the first storage module 105 can maintain the potential of the control terminal of the driving module 101, and the second storage module 106 can couple the first power signal VDD to the dual gate nodes of the first dual gate transistor T1 and the second dual gate transistor T2 to further maintain the potential of the control terminal of the driving module 101; in the second initialization phase t13, the third Scan signal Scan3 is at a low level, the second initialization module 108 may initialize the first terminals of the light emitting module 107 and the driving module 101, and the third initialization module 111 may initialize the second terminal of the driving module 101; in the lighting period t14, the driving module 101 generates a driving current, and the lighting module 107 emits light in response to the driving current; in the stage T2, since the data voltage signal Vdata is written into the driving module 101, only the second initialization stage T23 and the lighting stage T24 are needed to initialize the lighting module 107, and initialize the first end and the second end of the driving module 101, so that before lighting, the potentials of the nodes in the pixel driving circuit are kept consistent, and the display brightness in the stage T2 is consistent with the display brightness in the stage T1; correspondingly, in the stage T3, only the second initialization stage T33 and the lighting stage T34 need to be performed, and in the stage T4, only the second initialization stage T43 and the lighting stage T44 need to be performed, so that before the lighting of the lighting module 107, the lighting module 107 is initialized, and the first end and the second end of the driving module 101 are initialized, so that before lighting at each time, the potentials of the nodes in the pixel driving circuit are kept consistent, so that the display brightness of the lighting module 107 during lighting at each time is consistent, thereby realizing low refresh frequency, the display panel can normally display, no flicker phenomenon occurs, and thus improving the display effect of the display panel.
Fig. 6 only shows a case where all the blocks are turned on at a low level, but the present invention is not limited thereto, and in some other embodiments, the types of the turn-on levels of the blocks may be opposite to those of the present embodiment.
Fig. 7 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the invention, and optionally, referring to fig. 7, the driving module 101 includes a third transistor T3, a control terminal of the third transistor T3 is a control terminal of the driving module 101, a first terminal of the third transistor T3 is a first terminal of the driving module 101, and a second terminal of the third transistor T3 is a second terminal of the driving module 101; the data writing module 103 includes a fourth transistor T4, a first terminal of the fourth transistor T4 is a first terminal of the data writing module 103, a second terminal of the fourth transistor T4 is a second terminal of the data writing module 103, and a control terminal of the fourth transistor T4 is a control terminal of the data writing module 103; the light emitting module 107 comprises an organic light emitting diode D1, a first end of the organic light emitting diode D1 is a first end of the light emitting module 107, and a second end of the organic light emitting diode D2 is a second end of the light emitting module 107; the second initialization block 108 includes a fifth transistor T5, a control terminal of the fifth transistor T5 is the control terminal of the second initialization block 108, a first terminal of the fifth transistor T5 is the first terminal of the second initialization block 108, and a second terminal of the fifth transistor T5 is the second terminal of the second initialization block 108; the first light emitting control module 109 includes a sixth transistor T6, a control terminal of the sixth transistor T6 is a control terminal of the first light emitting control module 109, a first terminal of the sixth transistor T6 is a first terminal of the first light emitting control module 109, and a second terminal of the sixth transistor T6 is a second terminal of the first light emitting control module 109; the second light emitting control module 110 includes a seventh transistor T7, a control terminal of the seventh transistor T7 is a control terminal of the second light emitting control module 110, a first terminal of the seventh transistor T7 is a first terminal of the second light emitting control module 110, and a second terminal of the seventh transistor T7 is a second terminal of the second light emitting control module 110.
Fig. 8 is a schematic structural diagram of another pixel driving circuit according to an embodiment of the invention, and optionally, referring to fig. 8, the third initialization block 111 includes an eighth transistor T8, a control terminal of the eighth transistor T8 is the control terminal of the third initialization block 111, a first terminal of an eighth transistor T8 is the first terminal of the third initialization block 111, and a second terminal of an eighth transistor T8 is the second terminal of the third initialization block 111; the third lighting control module 112 includes a ninth transistor T9, a control terminal of the ninth transistor T9 is a control terminal of the third lighting control module 112, a first terminal of the ninth transistor T9 is a first terminal of the third lighting control module 112, and a second terminal of the ninth transistor T9 is a second terminal of the third lighting control module 112; the fourth light emission control module 113 includes a tenth transistor T10, a control terminal of the tenth transistor T10 is a control terminal of the fourth light emission control module 113, a first terminal of the tenth transistor T10 is a first terminal of the fourth light emission control module 113, and a second terminal of the tenth transistor T10 is a second terminal of the fourth light emission control module 113.
Fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and referring to fig. 9, the display panel includes a plurality of pixel driving circuits PX according to any embodiment of the present invention, the display panel may include a plurality of criss-cross scan lines (S1-Sk) and data lines (DL 1-DLj), the pixel driving circuits are located in a region defined by the scan lines and the data lines, and the scan lines may include, for example, a first scan line, a second scan line, and a third scan line, which are respectively electrically connected to a first scan signal terminal, a second scan signal terminal, and a third scan signal terminal of the pixel driving circuits, so as to provide scan signals for the pixel driving circuits PX. The pixel driving circuit provided by any embodiment of the invention has the same beneficial effects, and is not described in detail herein.
Fig. 10 is a schematic structural diagram of a display device according to an embodiment of the present invention, referring to fig. 10, the display device includes a display panel according to any embodiment of the present invention, and the display device may be a mobile phone, a tablet, a display, a smart watch, an MP3, an MP4, or other wearable devices.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A pixel driving circuit, comprising: the device comprises a driving module, a threshold compensation module, a data writing module, a first initialization module, a first storage module, a second storage module and a light-emitting module;
the data writing module is used for writing a data voltage signal into the driving module;
the driving module is used for generating a driving current, and the light-emitting module is used for responding to the driving current to emit light;
the threshold compensation module is used for capturing the threshold voltage of the driving module to the control end of the driving module, and comprises a first double-gate transistor;
the first initialization module is used for initializing the driving module and comprises a second double-gate transistor;
the first storage module is used for maintaining the potential of the control end of the driving module;
the second storage module is to couple a first power supply signal to a dual gate node of the first dual gate transistor and a dual gate node of the second dual gate transistor.
2. The pixel driving circuit according to claim 1,
the first double-gate transistor comprises a first sub transistor and a second sub transistor, a control end of the first sub transistor and a control end of the second sub transistor are both connected with a first scanning signal, a first end of the first sub transistor is electrically connected with a first end of the driving module, a second end of the first sub transistor is electrically connected with a first end of the second sub transistor, and a second end of the second sub transistor is electrically connected with a control end of the driving module;
the second double-gate transistor comprises a third sub-transistor and a fourth sub-transistor, a control end of the third sub-transistor and a control end of the fourth sub-transistor are both connected with a second scanning signal, a first end of the third sub-transistor is connected with an initialization signal, a second end of the third sub-transistor is electrically connected with a first end of the fourth sub-transistor, and a second end of the fourth sub-transistor is electrically connected with a control end of the driving module;
the first end of the second storage module is connected to the first power supply signal, the second end of the second storage module is electrically connected with the second end of the third sub transistor, and the second end of the second storage module is also electrically connected with the second end of the first sub transistor;
a first end of the data writing module is connected with a data voltage signal, a control end of the data writing module is connected with the first scanning signal, and a second end of the data writing module is electrically connected with a second end of the driving module;
the control end of the driving module is electrically connected with the first end of the first storage module, the second end of the first storage module is connected with the first power supply signal, the first end of the driving module is electrically connected with the first end of the light-emitting module, and the second end of the light-emitting module is connected with the second power supply signal.
3. The pixel driving circuit according to claim 2,
the channel width-length ratio of the first sub-transistor is less than or equal to 0.45;
and/or the channel width-length ratio of the third sub-transistor is less than or equal to 0.45.
4. The pixel driving circuit according to claim 1, wherein the first storage module comprises a first capacitor, a first terminal of the first capacitor is a first terminal of the first storage module, and a second terminal of the first capacitor is a second terminal of the first storage module;
the second storage module comprises a second capacitor, the first end of the second capacitor is the first end of the second storage module, and the second end of the second capacitor is the second end of the second storage module.
5. The pixel driving circuit according to claim 4, wherein the first capacitor comprises two opposing first plates; the second capacitor comprises two opposite second polar plates;
the area of the first polar plate is smaller than that of the second polar plate.
6. The pixel driving circuit according to claim 2, further comprising a second initialization module;
the control end of the second initialization module is connected to a third scanning signal, the first end of the second initialization module is connected to the initialization signal, the second end of the second initialization module is electrically connected to the first end of the light emitting module, and the second initialization module is used for initializing the light emitting module in a second initialization stage.
7. The pixel driving circuit according to claim 6, further comprising a first light emission control module and a second light emission control module;
a control end of the first light emitting control module is connected with a first enabling signal, a first end of the first light emitting control module is connected with the first power supply signal, and a second end of the first light emitting control module is electrically connected with a second end of the driving module;
the first end of the driving module is electrically connected with the first end of the light-emitting module through the second light-emitting control module, the control end of the second light-emitting control module is connected to the first enabling signal, and the first light-emitting control module and the second light-emitting control module are used for controlling the light-emitting module to emit light in response to the driving current in a light-emitting stage.
8. The pixel driving circuit according to claim 6, further comprising a third initialization module;
the control end of the third initialization module is connected to a third scanning signal, the first end of the third initialization module is connected to the initialization signal, the second end of the third initialization module is electrically connected to the second end of the driving module, and the third initialization module is used for initializing the second end of the driving module in a second initialization stage.
9. The pixel driving circuit according to claim 8, further comprising a third light emission control module and a fourth light emission control module;
a control end of the third light-emitting control module is connected with a second enabling signal, a first end of the third light-emitting control module is connected with the first power supply signal, and a second end of the third light-emitting control module is electrically connected with a second end of the driving module;
the first end of the driving module is electrically connected with the first end of the light-emitting module through the fourth light-emitting control module, the control end of the fourth light-emitting control module is connected with a third enabling signal, the third light-emitting control module and the fourth light-emitting control module are used for controlling the light-emitting module to respond to the driving current to emit light in the light-emitting stage, and the second initialization module is further used for initializing the first end of the driving module through the fourth light-emitting control module in the second initialization stage.
10. A display panel comprising the pixel drive circuit according to any one of claims 1 to 9.
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| CN114582283A (en) * | 2022-03-30 | 2022-06-03 | 云谷（固安）科技有限公司 | Pixel circuit and display panel |
| CN114613321A (en) * | 2022-03-30 | 2022-06-10 | 云谷（固安）科技有限公司 | Pixel driving circuit, driving method thereof and display panel |
| CN116052586A (en) * | 2023-02-14 | 2023-05-02 | 武汉天马微电子有限公司 | Pixel circuit, driving method and display panel |
| CN116682377A (en) * | 2023-06-21 | 2023-09-01 | 上海和辉光电股份有限公司 | Pixel circuit, driving method thereof and display panel |
| WO2023216239A1 (en) * | 2022-05-07 | 2023-11-16 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| WO2023236289A1 (en) * | 2022-06-08 | 2023-12-14 | 武汉华星光电半导体显示技术有限公司 | Pixel circuit and display panel |
| WO2023245676A1 (en) * | 2022-06-24 | 2023-12-28 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method therefor, display panel and display apparatus |
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| WO2023216239A1 (en) * | 2022-05-07 | 2023-11-16 | 武汉华星光电半导体显示技术有限公司 | Display panel |
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| WO2023245676A1 (en) * | 2022-06-24 | 2023-12-28 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method therefor, display panel and display apparatus |
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