CN108648702A - Pixel driving circuit, driving method thereof, display panel and display device - Google Patents

Pixel driving circuit, driving method thereof, display panel and display device Download PDF

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Publication number
CN108648702A
CN108648702A CN201810251860.0A CN201810251860A CN108648702A CN 108648702 A CN108648702 A CN 108648702A CN 201810251860 A CN201810251860 A CN 201810251860A CN 108648702 A CN108648702 A CN 108648702A
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CN
China
Prior art keywords
pixel
transistor
signal
control signal
electrically connected
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CN201810251860.0A
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Chinese (zh)
Inventor
周良
王会
周九斌
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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Priority to CN201810251860.0A priority Critical patent/CN108648702A/en
Publication of CN108648702A publication Critical patent/CN108648702A/en
Pending legal-status Critical Current

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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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses a pixel driving circuit, a driving method thereof, a display panel and a display device. The pixel driving circuit comprises a first switch unit, a second switch unit, a pixel capacitor, a first storage capacitor, a second storage capacitor, a scanning line, a data line, a common voltage line and a control signal line; the control end of the first switch unit is electrically connected with the scanning line; the control end of the second switch unit is electrically connected with the control signal line, the first end of the second switch unit is electrically connected with the common voltage line, and the second end of the second switch unit is electrically connected with the second pole of the second storage capacitor; the control signal line is used for controlling the second switch unit to be switched on or switched off; the pixel driving circuit comprises a low-frequency output state and a high-frequency output state, and the control signal line provides a first signal in the low-frequency output state; in the high-frequency output state, the control signal line supplies a second signal. The invention can realize the switching between the low-frequency output display and the high-frequency output display during the static display and the dynamic display, and can realize the effect of reducing the power consumption.

Description

Pixel-driving circuit and its driving method, display panel and display device
Technical field
The present invention relates to display technology fields, more particularly, to a kind of pixel-driving circuit and its driving method, display Panel and display device.
Background technology
Existing display panel includes liquid crystal display panel and organic light emitting display panel.It is usually wrapped in liquid crystal display panel Array substrate, color membrane substrates and the layer of liquid crystal molecule between array substrate and color membrane substrates are included, is led in liquid crystal display panel It crosses on pixel electrode and public electrode and applies voltage, form the deflection of electric field controls liquid crystal molecule, realize the transmission of light, into And realize the display of display panel.
With the development of science and technology with the raising of user demand, compete in existing display panel industry more and more fierce.Entirely Face, high screen accounting, high contrast, low-power consumption etc. become the main selling point of all big enterprises.
Therefore it provides pixel-driving circuit and its driving method, the display panel and display device of a kind of low-power consumption, are these Field urgent problem to be solved.
Invention content
In view of this, the present invention provides a kind of pixel-driving circuit and its driving method, display panel and display device, Solves the technical issues of reducing power consumption.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of pixel-driving circuit, including：
First switch unit, second switch unit, pixel capacitance, the first storage capacitance, the second storage capacitance, scan line, Data line, public pressure wire and control signal wire；
The control terminal of first switch unit is electrically connected with scan line, and first end and the data line of first switch unit are electrically connected Connect, the second end of first switch unit be electrically connected the first pole of pixel capacitance, the first storage capacitance the first pole and second First pole of storage capacitance；
The control terminal of second switch unit is electrically connected with control signal wire, the first end and common voltage of second switch unit Line is electrically connected, and the second end of second switch unit is electrically connected with the second pole of the second storage capacitance；
Second pole of pixel capacitance is electrically connected with public pressure wire；
Second pole of the first storage capacitance is electrically connected with public pressure wire；
Scan line provides scanning signal；
Data line provides data-signal；
Public pressure wire provides public voltage signal；
Control signal wire provides the first signal and the second signal, and the first signal controls second switch unit and opens, the second letter Number control second switch unit close；
The working condition of pixel-driving circuit includes low frequency output state and high frequency output state；Scan line and data line, The frequency that signal exports under low frequency output state is less than the frequency that signal exports under high frequency output state；
Wherein, under low frequency output state, control signal wire provides the first signal；Under high frequency output state, control letter Number line provides second signal.
Further, in order to solve the above-mentioned technical problem, the present invention also provides a kind of driving method of pixel-driving circuit, For driving any one pixel-driving circuit provided by the invention,
Under low frequency output state, control scan line provides scanning signal according to first frequency, and data line is according to the first frequency Rate provides data-signal, and public pressure wire provides public voltage signal, and control signal wire provides the first signal；
Under high frequency output state, control scan line provides scanning signal according to second frequency, and data line is according to the second frequency Rate provides data-signal, and public pressure wire provides public voltage signal, and control signal wire provides second signal,
Wherein, first frequency is less than second frequency.
Further, in order to solve the above-mentioned technical problem, the present invention also provides a kind of display panels, including the present invention to provide Any one pixel-driving circuit, pixel-driving circuit is used to drive multiple sub-pixels of display panel,
Sub-pixel includes pixel electrode, public electrode and first electrode, and pixel electrode forms pixel capacitance with public electrode Two pole plates, pixel electrode forms two pole plates of the first storage capacitance, pixel electrode and first with part public pressure wire Electrode forms two pole plates of the second storage capacitance；
Display panel includes low frame rate Flushing status and high frame frequency Flushing status, scan line and data line, in low frame rate brush The frequency that signal exports under new state is less than the frequency that signal exports under high frame frequency Flushing status；
Under low frame rate Flushing status, scan line provides scanning signal, and data line provides data-signal, and public pressure wire carries For public voltage signal, control signal wire provides the first signal control second switch unit and opens；
Under high frame frequency Flushing status, scan line provides scanning signal, and data line provides data-signal, and public pressure wire carries For public voltage signal, control signal wire provides second signal control second switch unit and closes.
Further, in order to solve the above-mentioned technical problem, the present invention also provides a kind of display devices, including the present invention to provide Any one display panel.
Compared with prior art, pixel-driving circuit of the invention and its driving method, display panel and display device, it is real Following advantageous effect is showed：
When pixel-driving circuit provided by the invention is applied in display panel, the sub-pixel in display panel is come It says, the variation of the size of the voltage applied on data line, can realize the brightness change that sub-pixel is shown.Display panel shows picture Usually there will be tableaux and dynamic menu when face, when tableaux, pixel-driving circuit works under low frequency output state, The brightness of sub-pixel is constant；When dynamic menu, pixel-driving circuit works under high frequency output state, and the brightness of sub-pixel occurs Variation.Only there are one fixed storage capacitance or no storage capacitances in conventional pixel-driving circuit, for driving son When pixel is shown, the time of display that can keep of sub-pixel is fixed, so when either dynamic menu is shown also When being tableaux display, the output frequency of pixel-driving circuit is identical.And the present invention is compared with conventional driving circuit, Can realize can be real while the static switching with the low frequency output and high frequency output when Dynamic Announce, guarantee display effect Now reduce the effect of power consumption.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even With its explanation together principle for explaining the present invention.
Fig. 1 is the structural schematic diagram of pixel-driving circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of optional embodiment structural schematic diagram of pixel-driving circuit provided in an embodiment of the present invention；
Fig. 3 is the sequence diagram for the pixel-driving circuit that Fig. 2 embodiments provide；
Fig. 4 is another optional embodiment structural schematic diagram of pixel-driving circuit provided in an embodiment of the present invention；
Fig. 5 is the sequence diagram for the pixel-driving circuit that Fig. 4 embodiments provide；
Fig. 6 is the driving method flow chart of pixel-driving circuit provided in an embodiment of the present invention；
Fig. 7 is a kind of optional embodiment flow chart of driving method of pixel-driving circuit provided in an embodiment of the present invention；
Fig. 8 is a kind of optional embodiment local overlooking schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 9 is the low frame rate Flushing status of display panel provided in an embodiment of the present invention and high frame frequency Flushing status sequential Figure；
Figure 10 is the partial top view of another optional embodiment of display panel provided in an embodiment of the present invention；
Figure 11 is the sectional view of the display panel along Figure 10 at the positions tangent line A-A '；
Figure 12 is the partial top view of another optional embodiment of display panel provided in an embodiment of the present invention；
Figure 13 is the partial top view of another optional embodiment of display panel provided in an embodiment of the present invention；
Figure 14 is display device schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the structural schematic diagram of pixel-driving circuit provided in an embodiment of the present invention.As shown in Figure 1, the present invention provides A kind of pixel-driving circuit, including：First switch unit 1, second switch unit 2, pixel capacitance CLC, the first storage capacitance C1、 Second storage capacitance C2, scan line G, data line D, public pressure wire V and control signal wire S；The control terminal of first switch unit 1 11 are electrically connected with scan line G, and the first end 12 of first switch unit 1 is electrically connected with data line D, and the second of first switch unit 1 End 13 is electrically connected pixel capacitance CLCThe first pole CLC1, the first storage capacitance C1The first pole C1The 1 and second storage capacitance C2 The first pole C21；The control terminal 21 of second switch unit 2 is electrically connected with control signal wire S, the first end of second switch unit 2 22 are electrically connected with public pressure wire V, the second end 23 of second switch unit 2 and the second storage capacitance C2The second pole C22 are electrically connected It connects；Pixel capacitance CLCThe second pole CLC2 are electrically connected with public pressure wire V；First storage capacitance C1The second pole C12 and common electrical Crimping V electrical connections；Scan line G provides scanning signal；Data line D provides data-signal；Public pressure wire V provides common voltage letter Number；Control signal wire S provides the first signal and the second signal, and the first signal controls second switch unit 2 and opens, second switch list Member 2 can realize the second storage capacitance C after opening2The second pole C2Being electrically connected between 2 and public pressure wire V realizes common electrical Crimping V is to the second storage capacitance C2Charging；Second signal controls second switch unit 2 and closes, and second switch unit 2 is closed Afterwards, public pressure wire V and the second storage capacitance C2The second pole C22 connection disconnects, will not be to the second storage capacitance C2Charging； The working condition of pixel-driving circuit includes low frequency output state and high frequency output state；Scan line G and data line D, in low frequency The frequency that signal exports under output state is less than the frequency that signal exports under high frequency output state；Wherein, shape is exported in low frequency Under state, control signal wire S provides the first signal；Under high frequency output state, control signal wire S provides second signal.
Pixel-driving circuit provided in an embodiment of the present invention is for driving display panel sub-pixel to be shown, in circuit In working condition, data line and public pressure wire realize the display of sub-pixel to pixel capacitance charges simultaneously, and for sub-pixel Display is kept for certain time need the first storage capacitance being arranged in pixel-driving circuit in storage capacitance namely the present invention. The second storage capacitance is arranged in the present invention simultaneously, and two pole plates of the second storage capacitance are electrically connected with data line and public pressure wire respectively It connects.In low frequency output state, control signal wire provides the first signal, then the first signal control second switch unit is opened, and second Switch unit can realize being electrically connected between the second pole of the second storage capacitance and public pressure wire after opening, realize common electrical Charging of the crimping to the second storage capacitance, is equivalent under low frequency output state, and the first storage capacitance and the second storage capacitance are all It can discharge pixel capacitance, suitably increase the storage capacitance in pixel-driving circuit, and then sub-pixel can be extended The retention time of display.According to formula：Δ U=Δs Q/Cs, wherein Δ U is the voltage between two-plate in capacitance, and Δ Q is electricity Lotus, Cs is storage capacitance, extended in the retention time, increases storage capacitance, can be reduced because charge loss is led The voltage change of cause maintains sub-pixel display effect.Under high frequency output state, control signal wire provides second signal, then and the Binary signal controls second switch unit and closes, then public pressure wire and the connection of the second pole of the second storage capacitance disconnects, will not It charges to the second storage capacitance, namely under high frequency output state, only the first storage capacitance discharges to pixel capacitance.
When pixel-driving circuit provided by the invention is applied in display panel, the sub-pixel in display panel is come It says, (usual data line is electrically connected with pixel electrode, and pixel electrode is pixel electricity for the variation of the size of the voltage applied on data line The pole plate held), it can realize the brightness change that sub-pixel is shown.Display panel usually there will be static picture when showing picture Face and dynamic menu, when tableaux, pixel-driving circuit works under low frequency output state, and the brightness of sub-pixel is constant；It is dynamic When state picture, pixel-driving circuit works under high frequency output state, and the brightness of sub-pixel changes.It is driven in conventional pixel Only there are one fixed storage capacitance or no storage capacitances in dynamic circuit, when for driving sub-pixel to be shown, sub- picture The time of display that can keep of element is fixed, so when either dynamic menu is shown or when tableaux is shown, as The output frequency of plain driving circuit is identical.And the present invention can realize compared with conventional driving circuit static and dynamic The switching of low frequency output and high frequency output when state is shown, ensures to realize the effect for reducing power consumption while display effect.
Further, Fig. 2 is that a kind of optional embodiment structure of pixel-driving circuit provided in an embodiment of the present invention is shown It is intended to.As shown in Fig. 2, first switch unit 1 includes the first transistor T1, the control terminal T11 and scan line G of the first transistor T1 Electrical connection, the first end T12 of the first transistor T1 are electrically connected with data line D, and the second end T13 of the first transistor T1 is electrically connected respectively Meet pixel capacitance CLCThe first pole CLC1, the first storage capacitance C1The first pole C1The 1 and second storage capacitance C21 the first pole C21； Second switch unit 2 includes second transistor T2, and the control terminal T21 of second transistor T2 is electrically connected with control signal wire S, and second The first end T22 of transistor T2 is electrically connected with public pressure wire V, the second end T23 and the second storage capacitance of second transistor T2 C2The second pole C22 electrical connections.
Fig. 3 is the sequence diagram for the pixel-driving circuit that Fig. 2 embodiments provide.Fig. 3 is the single son of pixel-driving circuit driving The sequence diagram of pixel, the signal on data line D is the data-signal on the sub-pixel at this time, when scan line provides scanning signal, Data line accordingly provides data-signal.As shown in figure 3, at low frequency output state DP, the signal of scan line G and data line D are defeated Go out frequency and is less than the output frequency at high frequency output state GP.In conjunction with Fig. 2, at high frequency output state GP, scan line G is provided Scanning signal, the first transistor T1 are opened, while data line D is to pixel capacitance CLCThe first pole CLC1 provides data voltage letter Number, at high frequency output state GP, the voltage swing that data line D is provided can change in intermediate gray scale voltage value, to realize son The different variations of pixel intensity, public pressure wire V provide constant voltage signal, and control signal wire S provides second signal (with the Binary signal is low level signal, and the first signal is for high level signal), second signal controls second transistor T2 and closes, Then public pressure wire V and the second storage capacitance C2The second pole C22 connection disconnects.Data line D is carried at high frequency output state GP The size of the signal of confession may change, and the size of the voltage data signal provided on data line D in Fig. 3 is only schematically shown.
Shown in Fig. 2 and Fig. 3, at low frequency output state DP, scan line G provides scanning signal, first crystal Pipe T1 is opened, while data line D is to pixel capacitance CLCThe first pole CLC1 provides data voltage signal, in low frequency output state DP Under, the voltage swing that data line D is provided is only in the two kinds of voltage value variations of 0 grayscale and 255 grayscale, to realize sub- picture in certain time Plain brightness does not change because of electric leakage, and public pressure wire V provides constant voltage signal, and control signal wire S provides the first signal, the One signal controls second transistor T2 and opens, then public pressure wire V and the second storage capacitance C2The second pole C22 electrical connection.
In the pixel-driving circuit that the embodiment provides, first switch unit 1 includes the first transistor T1, scan line G On voltage signal control the first transistor T1 open or close state.Second switch unit 2 includes second transistor T2, control Voltage signal control second transistor T1's on signal wire S processed opens or closes state.Under low frequency output state, control letter The first signal is provided on number line S, the first signal controls second transistor T2 and opens, and can realize the second storage capacitance C2Second Pole C2Being electrically connected between 2 and public pressure wire V realizes public pressure wire V to the second storage capacitance C2Charging, it is defeated in low frequency It does well down, the first storage capacitance C1With the second storage capacitance C2It can be to pixel capacitance CLCIt discharges, increases pixel Storage capacitance in driving circuit, and then the retention time that sub-pixel is shown can be extended.Under high frequency output state, control letter Second signal is provided on number line S, second signal controls second transistor T2 and closes, then public pressure wire V and the second storage capacitance C2The second pole C22 connection disconnects, will not be to the second storage capacitance C2Charging, namely under high frequency output state, only first Storage capacitance C1To pixel capacitance CLCIt discharges, realizes the holding that sub-pixel is shown.The embodiment is driven with conventional pixel Dynamic circuit is compared, and can be realized the switching of the low frequency output and high frequency output in static and Dynamic Announce, be ensured display effect While can realize reduce power consumption effect.
Further, Fig. 4 is another optional embodiment structure of pixel-driving circuit provided in an embodiment of the present invention Schematic diagram.As shown in figure 4, first switch unit 1 includes the first transistor T1, control terminal T11 and the scanning of the first transistor T1 Line G electrical connections, the first end T12 of the first transistor T1 are electrically connected with data line D, the second end T13 difference of the first transistor T1 It is electrically connected pixel capacitance CLCThe first pole CLC1, the first storage capacitance C1The first pole C1The 1 and second storage capacitance C2The first of 1 Pole C21；Second switch unit 2 includes second transistor T2 and third transistor T3, third transistor T3 and second transistor T2 Parallel connection, control signal wire include first control signal line S1 and second control signal line S2；Wherein, the control of second transistor T2 End T21 is electrically connected with first control signal line S1, and the first end T22 of second transistor T2 is electrically connected with public pressure wire V, and second The second end T23 of transistor T2 and the second storage capacitance C2The second pole C22 electrical connections；The control terminal T31 of third transistor T3 with The S2 electrical connections of second control signal line, the first end T32 of third transistor T3 are electrically connected with public pressure wire V, third transistor The second end T33 of T3 and the second storage capacitance C2The second pole C22 electrical connections；Under low frequency output state, first control signal line S1 and second control signal line S2 alternately provide the first signal, control second transistor T2 and third transistor T3 is alternately opened； Under high frequency output state, first control signal line S1 and second control signal line S2 are provided which that second signal, control second are brilliant Body pipe T2 and third transistor T3 are turned off.
Fig. 5 is the sequence diagram for the pixel-driving circuit that Fig. 4 embodiments provide.Fig. 5 is the single son of pixel-driving circuit driving The sequence diagram of pixel, the signal on data line D is the data-signal on the sub-pixel at this time, when scan line G provides scanning signal When, data line D accordingly provides data-signal, and the size of the voltage data signal provided on data line D is only schematically shown. As shown in figure 5, at low frequency output state DP, the signal output frequency of scan line G and data line D are less than in high frequency output state Output frequency under GP.At high frequency output state GP, scan line G provides scanning signal, and data line D provides data-signal, the One control signal wire S1 and second control signal line S2 is provided which that second signal (low level signal), second transistor and third are brilliant Body pipe is turned off；At low frequency output state DP, scan line G provides scanning signal, and data line D provides data-signal, the first control Signal wire S1 and second control signal line S2 processed alternately provides the first signal (high level signal), controls second transistor and third Transistor is alternately opened.
In the pixel-driving circuit that the embodiment provides, second switch unit 2 includes that second transistor T2 and third are brilliant Body pipe T3, control line signal wire include first control signal line S1 and second control signal line S2, wherein first control signal line S1 control second transistor T2's opens or closes, and second control signal line S2 control third transistor T3's opens or closes. Under low frequency output state, first control signal line S1 and second control signal line S2 alternately provide the first signal, control second Transistor T2 and third transistor T3 are alternately opened, and are avoided second transistor T2 or third transistor T3 and are in normally open There is leaky.Second transistor T2 and third transistor T3 are alternately opened, and can be realized under low frequency output state, second Storage capacitance C2The second pole C2Being electrically connected between 2 and public pressure wire V realizes public pressure wire V to the second storage capacitance C2 Charging.Under low frequency output state, the first storage capacitance C1With the second storage capacitance C2Pixel capacitance can be put Electricity increases the storage capacitance in pixel-driving circuit, and then can extend the retention time that sub-pixel is shown.In high frequency output Under state, first control signal line S1 and second control signal line S2 are provided which second signal, control second transistor T2 and the Three transistor T3 are turned off, then public pressure wire V and the second storage capacitance C2The second pole C22 connection disconnects, will not be to second Storage capacitance C2Charging, namely under high frequency output state, only the first storage capacitance C1To pixel capacitance CLCIt discharges, it is real The holding that existing sub-pixel is shown.The embodiment can be realized aobvious in static and dynamic compared with conventional pixel-driving circuit Low frequency when showing exports and the switching of high frequency output, ensures to realize the effect for reducing power consumption while display effect, and When low frequency output state, second transistor and third transistor are alternately opened, and second transistor or third transistor are avoided There is leaky in normally open, influences the display effect of sub-pixel.
It should be noted that the transistor in pixel-driving circuit provided by the invention can be that n-type transistor can also It is p-type transistor, is only illustrated by taking n-type transistor as an example in attached drawing of the embodiment of the present invention.
Further, proposed by the present invention for driving the present invention also provides a kind of driving method of pixel-driving circuit Any one pixel-driving circuit, pixel-driving circuit provided by the invention include low frequency output state and high frequency output state. Data line and the signal output frequency (first frequency) of scan line are less than the number under high frequency output state under low frequency output state According to the signal output frequency (second frequency) of line and scan line.
Fig. 6 is the driving method flow chart of pixel-driving circuit provided in an embodiment of the present invention.As shown in fig. 6, of the invention The driving method of offer includes：
Step S101：Under low frequency output state, control scan line provides scanning signal according to first frequency, and data line is pressed Data-signal is provided according to first frequency, public pressure wire provides public voltage signal, and control signal wire provides the first signal；Continue With reference to sequence diagram shown in Fig. 3, wherein at low frequency output state DP, within the single pass period of scan line G, scan line G Sweep time it is shorter, the retention time is longer.Pixel-driving circuit structure chart shown in referring to Fig.1, under low frequency output state, After control signal wire S provides the first signal, control second switch unit 2 is opened, and realizes the second storage capacitance C2The second pole C22 Being electrically connected between public pressure wire V realizes public pressure wire V to the second storage capacitance C2Charging, at this time keep when In, the first storage capacitance C1With the second storage capacitance C2It can be to pixel capacitance CLCIt discharges, suitably increases pixel Storage capacitance in driving circuit, and then the retention time that sub-pixel is shown can be extended.Low frequency output state can adapt in Drive the situation that sub-pixel display brightness is constant in certain time.
Step S102：Under high frequency output state, control scan line provides scanning signal according to second frequency, and data line is pressed Data-signal is provided according to second frequency, public pressure wire provides public voltage signal, and control signal wire provides second signal, In, first frequency is less than second frequency.With continued reference to sequence diagram shown in Fig. 3 and pixel-driving circuit structure chart shown in FIG. 1, At high frequency output state GP, control signal wire S provides second signal, and control second switch unit 2 is closed, then public pressure wire V and the second storage capacitance C2The second pole C22 connection disconnects, will not be to the second storage capacitance C2Charging, namely in the retention time Interior only the first storage capacitance C1To pixel capacitance CLCIt discharges.When the variation of sub-pixel display brightness is frequent, sub-pixel is not The too long of retention time is needed, then needs the signal output frequency of scan line and data line higher, high frequency output state GP is applicable in In drive sub-pixel display brightness variation the case where.
The driving method of pixel-driving circuit provided by the invention includes low frequency output state and high frequency output state.Using It shows that for pixel-driving circuit under low frequency output state, the brightness of sub-pixel is constant when driving in display panel, is suitable for static state Picture is shown；Pixel-driving circuit works under high frequency output state, and the brightness of sub-pixel changes, and is suitable for dynamic menu Display.The present invention can realize display panel switch operating under low frequency output state and high frequency output state, can realize drop The effect of low-power consumption.
Further, in some alternative embodiments, in the driving method of pixel-driving circuit provided by the invention, Control signal wire includes single signal wire, and it includes that control control signal wire persistently provides that control control signal wire, which provides the first signal, First signal；It includes that control control signal wire persistently provides second signal that control control signal wire, which provides second signal,.The implementation The corresponding pixel-driving circuit structure chart of mode is referred to shown in Fig. 2, and control signal wire includes single signal wire, defeated in low frequency It does well down, control scan line provides scanning signal according to first frequency, and data line provides data-signal according to first frequency, public Common voltage line provides public voltage signal, and control signal wire persistently provides the first signal, ensures second in pixel-driving circuit Switch unit is in the open state always under low frequency output state；Under high frequency output state, control scan line is according to second Frequency provides scanning signal, and data line provides data-signal according to second frequency, and public pressure wire provides public voltage signal, control Signal wire processed persistently provides second signal, ensures the second switch unit in pixel-driving circuit under high frequency output state always It is closed.
Further, in some alternative embodiments, in the driving method of pixel-driving circuit provided by the invention, Control signal wire includes first control signal line and second control signal line.The corresponding pixel-driving circuit structure of the embodiment Figure is referred to shown in Fig. 4.Fig. 7 is a kind of optional embodiment party of driving method of pixel-driving circuit provided in an embodiment of the present invention Formula flow chart.As shown in fig. 7, driving method provided by the invention includes：
Step S201：Under low frequency output state, control scan line provides scanning signal according to first frequency, and data line is pressed Data-signal is provided according to first frequency, public pressure wire provides public voltage signal, controls first control signal line and the second control Signal wire processed alternately provides the first signal, ensures that second transistor and third transistor are alternately opened in pixel-driving circuit, real Existing second storage capacitance is electrically connected with public pressure wire.
Step S202：Under high frequency output state, control scan line provides scanning signal according to second frequency, and data line is pressed Data-signal is provided according to second frequency, public pressure wire provides public voltage signal, controls first control signal line and the second control Signal wire processed persistently provides second signal, ensures that second transistor and third transistor are turned off in pixel-driving circuit, the Two storage capacitances are disconnected with public pressure wire.
The driving method for the pixel-driving circuit that the embodiment provides can be realized low in static and Dynamic Announce The switching of frequency output and high frequency output ensures to realize the effect for reducing power consumption while display effect, and is exported in low frequency When state, second transistor and third transistor are alternately opened, and avoid second transistor or third transistor is in normally opened There is leaky in state, influences the display effect of sub-pixel.
Further, the present invention also provides a kind of display panel, Fig. 8 is that display panel provided in an embodiment of the present invention is a kind of Optional embodiment local overlooking schematic diagram, as shown in figure 8, display panel include multiple sub-pixel sp, it is multi-strip scanning line G, more Data line D, a plurality of public pressure wire V and a plurality of control signal wire S.Display panel includes any one picture provided by the invention Plain driving circuit, pixel-driving circuit are used to drive multiple sub-pixels of display panel, pixel-driving circuit provided by the invention Structural schematic diagram can be with refering to what is shown in Fig. 1, pixel-driving circuit includes：First switch unit 1, second switch unit 2, pixel Capacitance CLC, the first storage capacitance C1, the second storage capacitance C2, scan line G, data line D, public pressure wire V and control signal wire S。
Shown in Fig. 8, display panel sub-pixel sp includes pixel electrode 101, public electrode 102 and the first electricity Pole 103, pixel electrode 101 form pixel capacitance C with public electrode 102LCTwo pole plates, pixel electrode 101 and part are public Pressure-wire V-arrangement is at the first storage capacitance C1Two pole plates, pixel electrode 101 and first electrode 103 form the second storage capacitance C2 Two pole plates；It should be noted that the shape of public electrode 102 is only schematically shown in display panel, public electrode 102 It can be entire one piece, or entire display panel includes multiple blocky public electrodes 102, when public electrode 102 is blocky The touch control electrode as display panel can be multiplexed；Various cablings are also only schematically shown in Fig. 8.
Display panel provided by the invention includes low frame rate Flushing status and high frame frequency Flushing status, scan line G and data Line D, the frequency that signal exports under low frame rate Flushing status are less than the frequency that signal exports under high frame frequency Flushing status.
Under low frame rate Flushing status, scan line G provides scanning signal step by step, and data line D provides data-signal, common electrical Crimping V provides public voltage signal, and control signal wire S provides the first signal control second switch unit and opens.Corresponding reference chart 1 In circuit structure diagram, second switch unit open after can realize the second storage capacitance C2The second pole and public pressure wire V Between electrical connection, realize public pressure wire V to the second storage capacitance C2Charging, be equivalent to the first storage capacitance C1With second Storage capacitance C2It can be to pixel capacitance CLCIt discharges, increases the storage capacitance in pixel-driving circuit, and then can Extend the retention time that display panel is shown, display panel low frame rate, which refreshes, shows picture, is suitable for display panel tableaux Display.
Under high frame frequency Flushing status, scan line G provides scanning signal, and data line D provides data-signal, public pressure wire V provides public voltage signal, and control signal wire S provides second signal control second switch unit (not shown) and closes, public Common voltage line V and the second storage capacitance C2The second pole connection disconnect, will not be to the second storage capacitance C2Charging, namely only First storage capacitance C1To pixel capacitance CLCIt discharges, the high frame frequency of display panel, which refreshes, shows picture, is suitable for display panel The display of dynamic menu.
The second storage capacitance is arranged in display panel pixel driving circuit, increases for display panel provided by the invention The storage capacitance of pixel-driving circuit, the second storage capacitance are controlled by second switch unit.When showing tableaux, with low frame Frequency Flushing status brush screen, control second switch unit are opened, and public pressure wire is connected to the second storage capacitance, the first storage capacitance It can discharge to pixel capacitance with the second storage capacitance, extend the picture retention time；When showing dynamic menu, with high frame frequency brush New state brush screen, control second switch unit are closed, and public pressure wire is disconnected with the second storage capacitance, only the first storage capacitance It discharges to pixel capacitance, ensures Dynamic Announce effect.The present invention can be realized shows tableaux under low frame rate Flushing status, Show dynamic menu under high frame frequency Flushing status, according to the renewal rate of picture normal mode (namely high frame frequency refresh shape State) switch between low-power consumption mode (namely low frame rate Flushing status), achieve the effect that reduce power consumption.In addition, in the present invention Since the second storage capacitance is arranged, the storage capacitance of pixel-driving circuit is increased, it, will not be in son in low frame rate Flushing status Pixel light the retention time it is extended in the case of because charge loss leads to pixel voltage change, ensure that low frame rate refresh shape Display effect when state (namely tableaux is shown).
In conventional display panel, in order to ensure that the smoothness of picture, the frame frequency of brush screen are generally 60Hz.Tableaux and Dynamic menu is the same, and display panel all updates picture with identical refreshing frequency.Fig. 9 is display surface provided in an embodiment of the present invention The low frame rate Flushing status of plate and high frame frequency Flushing status sequence diagram.As shown in figure 9, the scan line in display panel is swept step by step It retouches, it is assumed that display panel includes n scan line, and n is positive integer, is completed by first scan line G1 to nth bar scan line Gn Scanning signal after be known as a frame picture display.Wherein Dm represents m data lines, and m is also positive integer, in display panel A data line provides signal for multirow sub-pixel in display panel, so should have multiple arteries and veins on data line in a frame time Rush signal, the pulse signal of m data lines is only schematically shown in Fig. 9.It is normal to refresh the frequency f1 of GPS with high frame frequency 60Hz for, then valid frame refresh time is 1s/60 when high frame frequency refreshes GPS, wherein valid frame is to complete by first Scanning signals of the scan line G1 to nth bar scan line Gn.And the frequency f2 that low frame rate refreshes DPS is less than 60Hz, in low frame rate brush Under new DPS states, the constant refresh time of valid frame is still 1s/60, and extends retention time t, the scan line in retention time t Stop providing signal with data line.Fig. 9 is only for 1s refreshes 1 time namely f2=1Hz with the frequency that low frame rate refreshes.It is high When frame frequency refreshes GPS and low frame rate and refreshes DPS, valid frame refresh time is constant, and when low frame rate refreshes retention time t ( That is discharge time) it is obviously prolonged.In the present invention when low frame rate refreshes, the length of retention time t is with liquid crystal not because at for a long time Occur characteristic under same voltage and destroy or show that apparent ghost occur is advisable, a frame time is 1s in Fig. 9, and the retention time is less than 1s, but retention time t is not limited to shown in Fig. 9 when low frame rate refreshing, such as retention time t might be less that 3~4 seconds.
Further, Figure 10 is the fragmentary top of another optional embodiment of display panel provided in an embodiment of the present invention View, Figure 11 are the sectional view of the display panel along Figure 10 at the positions tangent line A-A '.Wherein, the display which provides The structural schematic diagram of pixel-driving circuit can be with shown in reference chart 2 in panel.
Shown in Figure 10 and Figure 11, wherein Figure 10 only illustrates a sub-pixel, display surface provided by the invention In plate, as shown in figure 11, first switch unit 1 includes the first transistor T1, and the first transistor T1 includes active layer T14, grid T15, source electrode T16 and drain electrode T17；Second switch unit 2 include second transistor T2, second transistor T2 include active layer T24, Grid T25, source electrode T26 and drain electrode T27；Display panel includes the array substrate 11 being oppositely arranged and color membrane substrates 12, in array Liquid crystal layer 13 is additionally provided between substrate 11 and color membrane substrates 12.
It continues to refer to figure 1 shown in 1, array substrate 11 includes the substrate layer 111 being arranged in order, the first metal layer 112, partly leads Body active layer 113, second metal layer 114, first electrode layer 115 and pixel electrode layer 116；Wherein, the first transistor T1's has The active layer T24 of active layer T14 and second transistor T2 are located at semiconductor active layer 113, the grid T15 of the first transistor T1 and the The grid T25 of two-transistor T2 is located at the first metal layer 112, the source electrode T16 and drain electrode T17 of the first transistor T1 and the second crystal The source electrode T26 and drain electrode T27 of pipe T2 is located at second metal layer 114.
Scan line G, public pressure wire V and control signal wire S in display panel are located at the first metal layer 112, data line D Positioned at second metal layer 114, first electrode 103 is located at first electrode layer 115, and pixel electrode 101 is located at pixel electrode layer 116； Wherein, the grid T15 of the first transistor T1 is electrically connected with scan line G, and the source electrode T16 and data line D of the first transistor T1 are electrically connected It connects, the drain electrode T17 of the first transistor T1 is electrically connected by the first via K1 with pixel electrode 101；The grid of second transistor T2 T25 is electrically connected with control signal wire S, and the source electrode T26 of second transistor T2 is electrically connected by the second via K2 and public pressure wire V It connects, the drain electrode T27 of second transistor T2 is electrically connected with first electrode 103.
In display panel provided by the invention, by the way that first electrode and second transistor is arranged so that in second transistor When opening state, first electrode can form capacitance between pixel electrode, can increase during driving sub-pixel display Storage capacitance.It can realize when showing tableaux, with low frame rate Flushing status brush screen, control second transistor is opened, the One electrode is connected to public pressure wire, can be formed storage capacitance between pixel electrode in first electrode, be extended picture and keep Time；When showing dynamic menu, with high frame frequency Flushing status brush screen, control second transistor is closed, public pressure wire and first Electrode disconnects, and storage capacitance is only formed between pixel electrode and part public pressure wire, ensures Dynamic Announce effect.This Invention can be realized shows tableaux under low frame rate Flushing status, and dynamic menu, root are shown under high frame frequency Flushing status According to the renewal rate of picture, in normal mode (namely high frame frequency Flushing status) and low-power consumption mode, (namely low frame rate refreshes shape State) between switch, achieve the effect that reduce power consumption.
Optionally, it continues to refer to figure 1 shown in 1, color membrane substrates 12 include common electrode layer 121, and public electrode 104 is located at public affairs Common electrode layer 121.In the display panel that the embodiment provides, public electrode 104 is connected (not shown) with public pressure wire, After applying voltage on public electrode 104 and pixel electrode 101, the deflection of electric field controls liquid crystal molecule is formed, realizes the saturating of light It crosses, and then realizes the display of display panel.
Further, Figure 12 is the fragmentary top of another optional embodiment of display panel provided in an embodiment of the present invention View.The structural schematic diagram of pixel-driving circuit can be with shown in reference chart 4 in the display panel that the embodiment provides.Such as Figure 12 Shown, second switch unit includes third transistor T3, and third transistor T3 is in parallel with second transistor T2, control signal wire packet Include first control signal line S1 and second control signal line S2；Wherein, third transistor T3 is in display panel film layer structure Position is identical as second transistor T2.Third transistor T3 include active layer T34, grid (be located at active layer T34 underface, Be not shown in figure), source electrode T36 and drain electrode T37, the active layer T34 of third transistor T3 is located at semiconductor active layer, third crystal The grid of pipe T3 is located at the first metal layer, and the source electrode T36 and drain electrode T37 of third transistor T3 are located at second metal layer；Second is brilliant The grid (not shown) of body pipe T2 is electrically connected with first control signal line S1；The grid and second control signal of third transistor T3 Line S2 electrical connections, the source electrode T36 of third transistor T3 are electrically connected by third via K3 with public pressure wire V, third transistor Drain electrode T37 be electrically connected with first electrode 103.
The display panel that the embodiment provides, the first control line traffic control second transistor of setting open or close, the Two control line traffic control third transistor open or close, when low frame rate refreshes, second transistor and third transistor alternating It opens, control first electrode is connected to public pressure wire, can be formed storage capacitance between pixel electrode in first electrode, be prolonged The long picture retention time avoids second transistor or third transistor is in normally open and leaky occurs, influences son The display effect of pixel.
Display panel provided by the invention increases the storage capacitance in pixel-driving circuit when low frame rate refreshes, and ensures The display effect of tableaux.But have small drain conditions unavoidably, and display pixel in the intermediate grayscale of display to electric leakage ten Point sensitivity, the variation that the minor alteration of voltage all can cause light penetration larger, so that picture when display intermediate grayscale There is scintillation, in order to solve the problems, such as that display film flicker, inventor further provide improvement project.
Further, Figure 13 is the fragmentary top of another optional embodiment of display panel provided in an embodiment of the present invention View.As shown in figure 13, display panel sub-pixel sp includes big sub-pixel Dsp and small sub-pixel Xsp, big sub-pixel Dsp's Opening area is more than the opening area of small sub-pixel Xsp；Display panel includes multiple sub-pixel unit spY, each sub-pixel list First spY includes sub-pixel Dsp one big and sub-pixel Xsp one small；Multiple sub-pixel unit spY include the first color sub-pixels Unit spY1, the second color sub-pixels unit spY2 and third color sub-pixels unit spY3.Optionally, the first color sub-pixels The color of unit spY1 is red, and the color of the second color sub-pixels unit spY2 is green, third color sub-pixels unit The color of spY3 is blue.Optionally, multiple sub-pixel unit spY can also include white sub-pixels unit.
In the display panel that the embodiment provides, pixel-driving circuit that sub-pixel provides through the embodiment of the present invention It drives, realizes that low frame rate refreshes and show tableaux, high frame frequency, which refreshes, shows dynamic menu.In the present invention, refresh in low frequency Although state increases storage capacitance, but have small electric leakage unavoidably, and it is single to replace to design big sub-pixel and small sub-pixel The picture of the intermediate grayscale of sub-pixel shows, can be to avoid the film flicker brought to small leakage-responsive due to intermediate grayscale Phenomenon.
A sub-pixel unit includes one big sub-pixel and a small sub-pixel in the embodiment of the present invention, then per height picture 4 kinds of grayscale may be implemented in plain unit, i.e., big sub-pixel and small sub-pixel are turned off, big sub-pixel closes small sub-pixel and opens, is big Sub-pixel is opened small sub-pixel closing, big sub-pixel and small sub-pixel and is opened.Big sub-pixel opens small sub-pixel and closes, is big sub Pixel, which closes small sub-pixel and opens both grayscale modes, can replace the intermediate grayscale mode of script, each sub-pixel or small greatly Sub-pixel only opens or closes two states, both states to it is small electric leakage and it is insensitive, to avoid display panel from going out Existing serious scintillation.
Optionally, when the sub-pixel unit of three kinds of colors forms a display pixel in display panel, 4*4*4 can be realized The picture of=64 colors is shown.The size of the present invention of opening area in to(for) big sub-pixel and small sub-pixel does not limit, Such as the size of the opening area of big sub-pixel and small sub-pixel can be 2:1.
Further, the present invention also provides a kind of display devices, including any one display panel proposed by the present invention.Figure 14 be display device schematic diagram provided in an embodiment of the present invention.Display device provided in an embodiment of the present invention can any be had The electronic product of display function, including but not limited to following classification：Television set, laptop, desktop displays, tablet electricity Brain, mobile phone, Intelligent bracelet, intelligent glasses, Vehicular display device, Medical Devices, industrial control equipment, touches interactive terminal at digital camera Deng.
By above-described embodiment it is found that the pixel-driving circuit and its driving method of the present invention, display panel and display dress It sets, has reached following advantageous effect：
When pixel-driving circuit provided by the invention is applied in display panel, the sub-pixel in display panel is come It says, the variation of the size of the voltage applied on data line, can realize the brightness change that sub-pixel is shown.Display panel shows picture Usually there will be tableaux and dynamic menu when face, when tableaux, pixel-driving circuit works under low frequency output state, The brightness of sub-pixel is constant；When dynamic menu, pixel-driving circuit works under high frequency output state, and the brightness of sub-pixel occurs Variation.Only there are one fixed storage capacitance or no storage capacitances in conventional pixel-driving circuit, for driving son When pixel is shown, the time of display that can keep of sub-pixel is fixed, so when either dynamic menu is shown also When being tableaux display, the output frequency of pixel-driving circuit is identical.And the present invention is compared with conventional driving circuit, Sub- picture under capable of realizing while the static switching with the low frequency output and high frequency output when Dynamic Announce, guarantee display effect The normal display of element can realize the effect for reducing power consumption.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair Bright range is defined by the following claims.

Claims (12)

1. a kind of pixel-driving circuit, which is characterized in that including：
First switch unit, second switch unit, pixel capacitance, the first storage capacitance, the second storage capacitance, scan line, data Line, public pressure wire and control signal wire；
The control terminal of the first switch unit is electrically connected with the scan line, the first end of the first switch unit with it is described Data line is electrically connected, and the second end of the first switch unit is electrically connected the first pole of the pixel capacitance, described first First pole of the first pole of storage capacitance and second storage capacitance；
The control terminal of the second switch unit is electrically connected with the control signal wire, the first end of the second switch unit with The public pressure wire electrical connection, the second end of the second switch unit and the second pole of second storage capacitance are electrically connected It connects；
Second pole of the pixel capacitance is electrically connected with the public pressure wire；
Second pole of first storage capacitance is electrically connected with the public pressure wire；
The scan line provides scanning signal；
The data line provides data-signal；
The public pressure wire provides public voltage signal；
The control signal wire provides the first signal and the second signal, and first signal controls the second switch unit and beats It opens, the second signal controls the second switch unit and closes；
The working condition of the pixel-driving circuit includes low frequency output state and high frequency output state；The scan line and described Data line, the frequency that signal exports under the low frequency output state are less than the frequency that signal exports under the high frequency output state Rate；
Wherein, under the low frequency output state, the control signal wire provides first signal；In the high frequency output shape Under state, the control signal wire provides the second signal.
2. pixel-driving circuit according to claim 1, which is characterized in that
The first switch unit includes the first transistor, and the control terminal of the first transistor is electrically connected with the scan line, The first end of the first transistor is electrically connected with the data line, and the second end of the first transistor is electrically connected described First pole of pixel capacitance, first storage capacitance the first pole and second storage capacitance the first pole；
The second switch unit includes second transistor, and the control terminal of the second transistor is electrically connected with the control signal wire Connect, the first end of the second transistor is electrically connected with the public pressure wire, the second end of the second transistor with it is described Second pole of the second storage capacitance is electrically connected.
3. pixel-driving circuit according to claim 2, which is characterized in that
The second switch unit further includes third transistor, and the third transistor is in parallel with the second transistor, described Control signal wire includes first control signal line and second control signal line；Wherein,
The control terminal of the second transistor is electrically connected with the first control signal line；
The control terminal of the third transistor is electrically connected with the second control signal line, the first end of the third transistor with The public pressure wire electrical connection, the second end of the third transistor are electrically connected with the second pole of second storage capacitance；
Under the low frequency output state, the first control signal line and the second control signal line alternately provide described the One signal, controls the second transistor and the third transistor is alternately opened；Under the high frequency output state, described One control signal wire and the second control signal line are provided which the second signal, control the second transistor and described Three transistors are turned off.
4. a kind of driving method of pixel-driving circuit, for driving the pixel driver electricity described in any one of claims 1 to 3 Road, which is characterized in that
Under the low frequency output state, controls the scan line and provide scanning signal according to first frequency, the data line is pressed Data-signal is provided according to the first frequency, the public pressure wire provides public voltage signal, and the control signal wire provides First signal；
Under the high frequency output state, controls the scan line and provide scanning signal according to second frequency, the data line is pressed Data-signal is provided according to the second frequency, the public pressure wire provides public voltage signal, and the control signal wire provides The second signal,
Wherein, the first frequency is less than the second frequency.
5. the driving method of pixel-driving circuit according to claim 4, which is characterized in that
The control signal wire includes single signal wire, and it includes control institute to control the control signal wire and provide first signal It states control signal wire and first signal is persistently provided；
It includes controlling the control signal wire persistently to provide described second to control the control signal wire and provide the second signal Signal.
6. the driving method of pixel-driving circuit according to claim 4, which is characterized in that
The control signal wire includes first control signal line and second control signal line, controls the control signal wire and provides institute It includes that the control first control signal line and the second control signal line alternately provide first signal to state the first signal；
It includes controlling the first control signal line and second control to control the control signal wire and provide the second signal Signal wire processed persistently provides the second signal.
7. a kind of display panel, which is characterized in that including the pixel-driving circuit described in any one of multiple claims 1 to 3, The pixel-driving circuit is used to drive multiple sub-pixels of the display panel,
The sub-pixel includes pixel electrode, public electrode and first electrode, and the pixel electrode is formed with the public electrode Two pole plates of the pixel capacitance, the pixel electrode form first storage capacitance with the part public pressure wire Two pole plates, the pixel electrode form two pole plates of second storage capacitance with the first electrode；
The display panel includes low frame rate Flushing status and high frame frequency Flushing status, the scan line and the data line, The frequency that signal exports under the low frame rate Flushing status is less than the frequency that signal exports under the high frame frequency Flushing status；
Under the low frame rate Flushing status, the scan line provides scanning signal, and the data line provides data-signal, described Public pressure wire provides public voltage signal, and the control signal wire provides the first signal control second switch unit and beats It opens；
Under the high frame frequency Flushing status, the scan line provides scanning signal, and the data line provides data-signal, described Public pressure wire provides public voltage signal, and the control signal wire provides second signal and controls the second switch unit pass It closes.
8. display panel according to claim 7, which is characterized in that
The first switch unit includes the first transistor, and the first transistor includes active layer, grid, source electrode and drain electrode； The second switch unit includes second transistor, and the second transistor includes active layer, grid, source electrode and drain electrode；
The display panel includes the array substrate being oppositely arranged and color membrane substrates, and the array substrate includes the base being arranged in order Plate layer, the first metal layer, semiconductor active layer, second metal layer, first electrode layer and pixel electrode layer；Wherein
The active layer of the first transistor is located at the semiconductor active with the active layer of the second transistor Layer, the grid of the first transistor is located at the first metal layer with the grid of the second transistor, described The source electrode of the first transistor and the drain electrode and the source electrode of the second transistor and the drain electrode are located at described the Two metal layers；
The scan line, the public pressure wire and the control signal wire are located at the first metal layer, the data line bit In the second metal layer, the first electrode is located at the first electrode layer, and the pixel electrode is located at the pixel electrode Layer；Wherein,
The grid of the first transistor is electrically connected with the scan line, the source electrode of the first transistor with it is described Data line is electrically connected, and the drain electrode of the first transistor is electrically connected by the first via with the pixel electrode；
The grid of the second transistor is electrically connected with the control signal wire, and the source electrode of the second transistor is logical It crosses the second via to be electrically connected with the public pressure wire, the drain electrode and the first electrode of the second transistor are electrically connected It connects.
9. display panel according to claim 8, which is characterized in that
The second switch unit includes third transistor, and the third transistor is in parallel with the second transistor, the control Signal wire processed includes first control signal line and second control signal line；Wherein,
The third transistor includes active layer, grid, source electrode and drain electrode, and the active layer of the third transistor is located at institute Semiconductor active layer is stated, the grid of the third transistor is located at the first metal layer, the institute of the third transistor It states source electrode and the drain electrode is located at the second metal layer；
The grid of the second transistor is electrically connected with the first control signal line；
The grid of the third transistor is electrically connected with the second control signal line, the source of the third transistor Pole is electrically connected by third via with the public pressure wire, the drain electrode and the first electrode electricity of the third transistor Connection.
10. display panel according to claim 8, which is characterized in that
The color membrane substrates include common electrode layer, and the public electrode is located at the common electrode layer.
11. display panel according to claim 7, which is characterized in that
The sub-pixel includes big sub-pixel and small sub-pixel, and the opening area of the big sub-pixel is more than the small sub-pixel Opening area；
The display panel includes multiple sub-pixel units, and each sub-pixel unit includes a big sub-pixel and one A small sub-pixel；
The multiple sub-pixel unit includes the first color sub-pixels unit, the second color sub-pixels unit and third color sub- picture Plain unit.
12. a kind of display device, which is characterized in that including claim 7 to 11 any one of them display panel.
CN201810251860.0A 2018-03-26 2018-03-26 Pixel driving circuit, driving method thereof, display panel and display device Pending CN108648702A (en)

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CN110310600A (en) * 2019-08-16 2019-10-08 上海天马有机发光显示技术有限公司 Driving method, display drive apparatus and the electronic equipment of display panel
CN112331123A (en) * 2020-11-18 2021-02-05 合肥芯颖科技有限公司 Sequential signal control method and device of GOA driving unit
CN112419996A (en) * 2020-12-01 2021-02-26 厦门天马微电子有限公司 Pixel circuit, driving method thereof, display panel and display device
CN112652276A (en) * 2020-12-31 2021-04-13 绵阳惠科光电科技有限公司 Display panel, driving method thereof and display device
CN113506549A (en) * 2021-07-13 2021-10-15 晶门科技（深圳）有限公司 Thin film transistor liquid crystal display device operable at a wide range of frame rates
CN113711298A (en) * 2020-03-18 2021-11-26 京东方科技集团股份有限公司 Shifting register unit and driving method thereof, grid driving circuit and display device
WO2021248566A1 (en) * 2020-06-09 2021-12-16 武汉华星光电技术有限公司 Pixel drive circuit and display panel
CN114187876A (en) * 2021-11-26 2022-03-15 绵阳惠科光电科技有限公司 Pixel driving circuit, display panel and electronic equipment
CN114745586A (en) * 2022-04-14 2022-07-12 福州京东方光电科技有限公司 Image transmission method and device and readable storage medium
CN114937438A (en) * 2022-05-19 2022-08-23 惠科股份有限公司 Common voltage drive circuit, display device and electronic apparatus
WO2022227111A1 (en) * 2021-04-26 2022-11-03 武汉华星光电技术有限公司 Multiplexing circuit, display panel, and method for driving display panel
CN115472137A (en) * 2022-09-16 2022-12-13 北京京东方显示技术有限公司 Pixel circuit, driving method thereof, display panel and display device
WO2023138360A1 (en) * 2022-01-19 2023-07-27 荣耀终端有限公司 Electrowetting substrate, electrowetting display panel and electrowetting display apparatus
WO2024031319A1 (en) * 2022-08-09 2024-02-15 京东方科技集团股份有限公司 Pixel driving method, pixel driving circuit, and display device

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CN109830205A (en) * 2019-04-17 2019-05-31 京东方科技集团股份有限公司 A kind of array substrate, its driving method, display panel and display device
CN109830205B (en) * 2019-04-17 2022-05-20 京东方科技集团股份有限公司 Array substrate, driving method thereof, display panel and display device
CN110310600A (en) * 2019-08-16 2019-10-08 上海天马有机发光显示技术有限公司 Driving method, display drive apparatus and the electronic equipment of display panel
CN113711298A (en) * 2020-03-18 2021-11-26 京东方科技集团股份有限公司 Shifting register unit and driving method thereof, grid driving circuit and display device
CN113711298B (en) * 2020-03-18 2023-02-07 京东方科技集团股份有限公司 Shifting register unit, driving method thereof, grid driving circuit and display device
WO2021248566A1 (en) * 2020-06-09 2021-12-16 武汉华星光电技术有限公司 Pixel drive circuit and display panel
CN112331123A (en) * 2020-11-18 2021-02-05 合肥芯颖科技有限公司 Sequential signal control method and device of GOA driving unit
CN112419996A (en) * 2020-12-01 2021-02-26 厦门天马微电子有限公司 Pixel circuit, driving method thereof, display panel and display device
CN112419996B (en) * 2020-12-01 2022-02-18 厦门天马微电子有限公司 Pixel circuit, driving method thereof, display panel and display device
CN112652276A (en) * 2020-12-31 2021-04-13 绵阳惠科光电科技有限公司 Display panel, driving method thereof and display device
CN112652276B (en) * 2020-12-31 2022-07-08 绵阳惠科光电科技有限公司 Display panel, driving method thereof and display device
WO2022227111A1 (en) * 2021-04-26 2022-11-03 武汉华星光电技术有限公司 Multiplexing circuit, display panel, and method for driving display panel
CN113506549A (en) * 2021-07-13 2021-10-15 晶门科技（深圳）有限公司 Thin film transistor liquid crystal display device operable at a wide range of frame rates
CN114187876A (en) * 2021-11-26 2022-03-15 绵阳惠科光电科技有限公司 Pixel driving circuit, display panel and electronic equipment
WO2023138360A1 (en) * 2022-01-19 2023-07-27 荣耀终端有限公司 Electrowetting substrate, electrowetting display panel and electrowetting display apparatus
CN116500774A (en) * 2022-01-19 2023-07-28 荣耀终端有限公司 Electrowetting substrate, electrowetting display panel and electrowetting display device
CN116500774B (en) * 2022-01-19 2023-10-31 荣耀终端有限公司 Electrowetting substrate, electrowetting display panel and electrowetting display device
CN114745586A (en) * 2022-04-14 2022-07-12 福州京东方光电科技有限公司 Image transmission method and device and readable storage medium
CN114937438A (en) * 2022-05-19 2022-08-23 惠科股份有限公司 Common voltage drive circuit, display device and electronic apparatus
US11915663B2 (en) 2022-05-19 2024-02-27 HKC Corporation Limited Common voltage driving circuit, display device, and electronic device
WO2024031319A1 (en) * 2022-08-09 2024-02-15 京东方科技集团股份有限公司 Pixel driving method, pixel driving circuit, and display device
CN115472137A (en) * 2022-09-16 2022-12-13 北京京东方显示技术有限公司 Pixel circuit, driving method thereof, display panel and display device
CN115472137B (en) * 2022-09-16 2023-11-03 北京京东方显示技术有限公司 Pixel circuit, driving method thereof, display panel and display device

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