CN106652916A - Pixel drive circuit, display device and display method thereof - Google Patents
Pixel drive circuit, display device and display method thereof Download PDFInfo
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- CN106652916A CN106652916A CN201710152969.4A CN201710152969A CN106652916A CN 106652916 A CN106652916 A CN 106652916A CN 201710152969 A CN201710152969 A CN 201710152969A CN 106652916 A CN106652916 A CN 106652916A
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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
- G09G3/3258—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 voltage across the light-emitting element
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Abstract
The invention provides a pixel drive circuit, a display device and a display method thereof, and belongs to the technical field of display, aiming at solving the problem of an existing display device on display uniformity. The pixel drive circuit provided by the invention comprises an enabling unit, an energy storage unit, a driving unit, a discharging unit and a light emitting unit, wherein the enabling unit, under the control of a row control signal which is inputted from a first control line and a column control signal which is inputted from a second control line, is used for charging the energy storage unit and for outputting an enabling signal to the driving unit; the driving unit, under the control of the enabling signal outputted from the enabling unit, is used for outputting gray-scale voltage which is inputted from a gray-scale voltage input end to the light emitting unit; the light emitting unit can emit light under the control of the driving unit; the energy storage unit is used for keeping the driving unit turned on when the enabling unit is turned off; and the discharging unit, under the control of a reset signal inputted from a reset signal input end, is used for discharging the driving unit and the energy storage unit.
Description
Technical field
The invention belongs to display technology field, and in particular to a kind of pixel-driving circuit, display device and its display methods.
Background technology
OLED (Organic Light Emitting Diode, OLED) compares present main flow and shows skill
Art Thin Film Transistor-LCD (Thin Film Transisitor Liquid Crystal Display, TFT-LCD),
Have the advantages that wide viewing angle, high brightness, high-contrast, low energy consumption, volume are more frivolous, be Jiao of current flat panel display concern
Point.
The driving method of OLED is divided into passive matrix type (PM, Passive Matrix) and active matrix
Two kinds of (AM, Active Matrix).And passive matrix type driving is compared, active matrix drives has that display information amount is big, work(
Consume low, device lifetime length, the advantages of picture contrast is high.A kind of picture of the active matrix organic light emitting display of prior art
The equivalent circuit of plain drive circuit, as shown in figure 1, including：First switch transistor M1, driving transistor M2, storage capacitance C1
And luminescent device D1.Wherein, the drain electrode of first switch transistor M1 is connected with the grid of driving transistor M2；Driving transistor
The grid of M2 connects one end of storage capacitance C1 simultaneously, and its source electrode is connected with the storage capacitance C1 other end, and it drains and photophore
Part D1 connects.First switch transistor M1 is opened when scanned signal Vscan (n) of grid is gated, from source electrode call number it is believed that
Number Vdata.Driving transistor M2 is generally operational in saturation region, and its gate source voltage Vgs determines the size for flowing through its electric current, and then
Stable electric current is provided for luminescent device D1.Wherein Vgs=Vdata-VD1, VD1 for luminescent device D1 cut-in voltage, VDD
For voltage stabilizing or stabilized current supply, connect driving transistor M2, for providing the energy required for luminescent device D1 lights.And store
The effect of electric capacity C1 is that stablizing for driving transistor M2 grid voltage is maintained within the time of a frame.
When first high level of scanning signal Vscan (n) starts, line n pixel cell is strobed, by the row pixel
First switch transistor M1 in unit is opened, and is introduced data-signal and is driven Vdata, luminescent device D1 to start to light.By driving
The high level of dynamic data-signal Vdata makes luminescent device D1 luminous by the storage capacitance C1 charging complete in the row pixel cell,
Afterwards, the first switch transistor M1 of the row pixel cell is closed by the first of scanning signal Vscan (n) low level.This
When, storage capacitance C1 maintains voltage when charging, and driving transistor M2 for maintaining the row pixel cell exports stable electric current, makes
The organic light emitting diode D1 continuous illuminations of the row pixel cell are obtained until a frame time terminates.One frame time is usually same a line
The time interval of the double scanned signal gating of pixel cell.
After the charging complete of line n pixel cell, scanning signal gates the (n+1)th row pixel cell, by the (n+1)th row pixel
The first switch transistor M1 of unit is opened, and introducing driving data signal carries out same charging process, passes through after charging complete
Storage capacitance C1 in pixel cell maintains voltage when charging, and maintains driving tube output stabling current so that n+1 row pixel lists
The luminescent device D1 continuous illuminations of unit terminate until a frame time.So sequentially go down, when to the charging of last column pixel cell
After the completion of, just start to rescan charging from the first row pixel cell again.
Although prior art pixel unit circuit is widely used, its still unavoidable presence problems with：
Can there is drift with the increase of use time in the threshold voltage vt h of driving transistor M2, so as to cause for same number
There is change, the i.e. electric current of luminescent device D1 (namely brightness) difference according to the Vgs of drive signal Vdata, so as to affect
The picture uniformity and its luminous mass of whole OLED.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art, there is provided it is homogeneous that one kind solves display screen
The pixel-driving circuit of sex chromosome mosaicism, display device and its display methods.
The technical scheme that solution present invention problem is adopted is a kind of pixel-driving circuit, including：Enabling unit, storage
Can unit, driver element, discharge cell, luminescence unit；Wherein,
The enabling unit, the first control line of connection, the second control line, energy-storage units, and driver element, in institute
It is described under stating the control of the row control signal that the first control line entered and the row control signal that second control line is input into
Energy-storage units charge, and export enable signal to the driver element；
The driver element, connects the enabling unit, the luminescence unit and gray scale voltage input, for described
Enabling unit exported enable signal control under, by the gray scale voltage that the gray scale voltage input is input into export to send out
Light unit；
The luminescence unit, connects the driver element and common voltage terminal, under the control of the driver element
It is luminous；
The energy-storage units, connection gray scale voltage input and driver element, for when enabling unit is turned off, maintaining institute
State driver element unlatching；
The discharge cell, connects the driver element, the energy-storage units, reset signal input and common electric voltage
End, under the control of the reset signal that the reset signal input is input into, to the driver element and the energy storage
Unit is discharged.
Preferably, the enabling unit includes the first transistor and transistor seconds；Wherein,
First pole of the first transistor connects the first control line, and the second pole connects the first pole of transistor seconds, control
Pole processed connects second control line；
First pole of the transistor seconds connects the second pole of the first transistor, and the second pole connects the energy storage mould
Block and the drive module, control pole connects first control line.
Preferably, the driver element includes third transistor；Wherein,
First pole of the third transistor connects the gray scale voltage input, and the second pole connects the luminescence unit,
Control pole connects the energy-storage units and the discharge cell.
Preferably, the discharge cell includes the 4th transistor；Wherein,
First pole of the 4th transistor connects the driver element and the energy-storage module, and the second pole connects the public affairs
Common-battery pressure side, control pole connects the reset signal input.
Preferably, the luminescence unit includes organic electroluminescent LED；Wherein,
The first end of the organic electroluminescent LED connects the driver element, and the second end connects the common electric voltage
End.
Preferably, the energy-storage units include storage capacitance；Wherein,
The first end of the storage capacitance connects the enabling unit and the discharge cell, and the second end connects the driving
Unit and the gray scale voltage input.
The technical scheme that solution present invention problem is adopted is a kind of display device, and it includes above-mentioned pixel driver
Circuit.
Preferably, multiple pixel-driving circuits are arranged in array, and positioned at pixel-driving circuit described in same a line
In enabling unit connection same described in the first control line；Enabling unit in the pixel-driving circuit of same row
Second control line described in connection same.
Preferably, the display device also includes timing control unit, for being controlled according to the grey decision-making of image to be displayed
Produce first control signal and second control signal.
The technical scheme that solution present invention problem is adopted is a kind of display methods of display device, including：
The first control signal of institute and the second control signal are produced according to the control of the grey decision-making of image to be displayed；
Line by line the first control signal is input into for the first control line, and is that the second control line is defeated according to the grey decision-making of display image
Enter the second control signal, selectively turn on the enabling unit in corresponding pixel-driving circuit, and while be the pixel driver
Energy-storage module in circuit charges；
Gray scale voltage input input service level signal is given, so that luminescence unit is luminous；
After the completion of the grey decision-making of image to be displayed shows, reset signal is input into reset signal input, to each
Driver element and energy-storage units in pixel-driving circuit is discharged.
The present invention has the advantages that：
The pixel-driving circuit of the present invention, according to " the time integral effect " of human eye, the length of fluorescent lifetime can be formed
Bright dark vision difference, it is longer to realize different greyscale levels, i.e. fluorescent lifetime by the fluorescent lifetime for controlling luminescence unit,
Corresponding tonal gradation is higher.Meanwhile, the pixel-driving circuit adopts constant current driven luminescence unit, when adjusting electric current driving
Between obtain corresponding GTG, to solve the problems, such as brightness of display screen uniformity.
Description of the drawings
Fig. 1 is the circuit diagram of existing pixel-driving circuit；
Fig. 2 is the structural representation of the pixel-driving circuit of embodiments of the invention 1；
Fig. 3 is the circuit diagram of the pixel-driving circuit of embodiments of the invention 1；
Fig. 4 is the structural representation of the display device of embodiments of the invention 2；
Fig. 5 is the grey decision-making of each pixel cell of image to be displayed in the embodiment of the present invention 2；
Fig. 6 shows when first control signal of the image of Fig. 5 for the display methods of the display device of embodiments of the invention 2
The sequential chart of line；
Fig. 7 shows when second control signal of the image of Fig. 5 for the display methods of the display device of embodiments of the invention 2
The sequential chart of line.
Specific embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula is described in further detail to the present invention.
The transistor for being adopted in the embodiment of the present invention can be thin film transistor (TFT) or FET or other characteristics
Identity unit, due to adopt transistor source electrode and drain electrode be symmetrical, so its source electrode, drain electrode be not different.
It is source electrode and the drain electrode for distinguishing transistor in the embodiment of the present invention, a wherein pole is referred to as into the first pole, another pole is referred to as second
Pole, grid is referred to as control pole.In addition distinguish and transistor can be divided into N-type and p-type, following examples according to the characteristic of transistor
In illustrated with N-type transistor, when using N-type transistor, the source electrode of the first extremely N-type transistor, the second extremely N
The drain electrode of transistor npn npn, during grid input high level, source-drain electrode conducting, p-type is contrary.It is conceivable that using P-type transistor
Realization is that those skilled in the art can readily occur under the premise of creative work is not paid, therefore is also in the present invention
In the protection domain of embodiment.
Embodiment 1：
With reference to shown in Fig. 2, the present embodiment provides a kind of pixel-driving circuit, and it includes：Enabling unit, energy-storage units, drive
Moving cell, discharge cell, luminescence unit；Wherein, enabling unit, the first control line Control1 of connection, the second control line
Control2, energy-storage units, and driver element, for the row control signal and second entered in the first control line Control1
It is that energy-storage units charge under the control of the row control signal that control line Control2 is input into, and exports enable signal to driving
Unit；Driver element, connection enabling unit, luminescence unit and gray scale voltage input Von, for what is exported in enabling unit
Under enabling the control of signal, the gray scale voltage that gray scale voltage input Von is input into is exported to luminescence unit；Luminescence unit,
Connection driver element and common voltage terminal Vcom, for lighting under the control of driver element；Energy-storage units, connect gray scale voltage
Input Von and driver element, for when enabling unit is turned off, maintaining driver element to open；Discharge cell, connection drives single
Unit, energy-storage units, reset signal input Voff and common voltage terminal Vcom, for being input in reset signal input Voff
Reset signal control under, driver element and energy-storage units are discharged.
Specifically, the pixel-driving circuit provided in the present embodiment can be applied to display floater, now each pixel
One pixel-driving circuit is then set in unit, while in order to reduce wiring, can be by positioned at the pixel-driving circuit with a line
In enabling unit connection same the first control line Control1, the enabling unit in the pixel-driving circuit of same row
Connection same the second control line Control2.According to " the time integral effect " of human eye, the length of fluorescent lifetime can be formed
Bright dark vision difference, it is longer to realize different greyscale levels, i.e. fluorescent lifetime by the fluorescent lifetime for controlling luminescence unit,
Corresponding tonal gradation is higher.If the highest GTG of image to be displayed is L255, then need to scan the width image from L255
To L1,255 frames are scanned altogether.Specifically, quickly progressively scan to the first control line Control1 in each frame start time, second
First control line Control1 current scan lines are needed control line Control2 pixel-driving circuit for showing L255 GTGs
In enabling unit open, while energy-storage units are electrically charged, luminescence unit is also turned on, and by gray scale voltage input Von
Light under the driving of the electric current produced by voltage being input into and shown, and luminescence display is remained to into the frame end.Sequential
After control unit waits the t times, the signal being input into by the first control line Control1 and the second control line Control2 lines
Control under by display L254 GTGs in need pixel-driving circuit in enabling unit open, luminescence unit pass through electric current
It is luminous to be shown, and luminescence display is remained to into the frame end.Each pixel driver is opened one by one by GTG decreasing fashion with this
Enabling unit in circuit, makes corresponding luminescence unit be shown by galvanoluminescence, and luminescence display is remained to into the frame
Terminate.It is defeated to reset signal after waiting the 2t times after the completion of the enabling unit in all L1 greyscale pixels drive circuits is opened
Enter to hold Voff input services level to open all discharge cells, the driver element closed in all pixels drive circuit, and will
Electricity in energy-storage units runs out and carry out again next frame and show.
It can thus be seen that, the pixel-driving circuit in the present embodiment adopts constant current driven luminescence unit, adjusts
Current drive time obtains corresponding GTG, to solve the problems, such as brightness of display screen uniformity.
As shown in figure 3, wherein, enabling unit includes the first transistor T1 and transistor seconds T2；The first transistor T1
The first pole connect the first control line Control1, the second pole connects first pole of transistor seconds T2, and control pole connection is described
Second control line Control2；First pole of transistor seconds T2 connects second pole of the first transistor T1, and the second pole connects
The energy-storage module and the drive module are connect, control pole connects the first control line Control1.
That is, the signal that only the first control line Control1 and the second control line Control2 are input into is work
Make level, namely when the first transistor T1 and transistor seconds T2 are opened during high level signal, the enabling unit can
It is opened, can charges for energy-storage units afterwards, and driver element is opened.
Wherein, driver element includes third transistor T3；First pole of third transistor T3 connects the gray scale voltage
Input Von, the second pole connects the luminescence unit, and control pole connects the energy-storage units and the discharge cell.
Specifically, after the enabling unit in pixel-driving circuit is opened, the control pole of third transistor T3 is then received
To operation level signal, while third transistor T3 is also turned on, now can then pass through gray scale voltage input Von inputs
Gray scale voltage produces corresponding electric current, to drive luminescence unit to carry out luminescence display.
Wherein, discharge cell includes the 4th transistor T4；First pole of the 4th transistor T4 connects the driver element
And energy-storage module, the second pole connection common voltage terminal Vcom, the control pole connection reset signal input Voff.
Specifically, when the reset signal input Voff that the control pole of the 4th transistor T4 is connected is written into operation level
After signal (high level signal), then the 4th transistor T4 is opened, simultaneously because the second pole connection of the 4th transistor T4 is public
Voltage end Vcom, now then turns off driver element, and the electricity in energy-storage units is bled off.
Wherein, luminescence unit includes organic electroluminescent LED OLED；The of organic electroluminescent LED OLED
One end connects driver element, and the second end connects common voltage terminal Vcom.Certainly, luminescence unit is not limited to adopt Organic Electricity
Photoluminescence diode OLED, or other display devices, such as inorganic EL diode etc..
Wherein, the energy-storage units in the present embodiment include storage capacitance C1, and certainly, energy-storage units are also not limited to storage electricity
Hold C1, or other have the device of energy-storage function.
Embodiment 2：
As shown in figure 4, the present embodiment provides a kind of display device, it includes the electricity of the pixel driver in multiple embodiments 1
Road, a plurality of first control line (Control1-1 to Control1-n), (Control2-1 is extremely for a plurality of second control line
), and multiple pixel-driving circuits are arranged in array, and the enable in pixel-driving circuit described in same a line Control2-m
First control line Control1 described in unit connection same；Enabling unit in the pixel-driving circuit of same row
Second control line described in connection same.Certainly, the display device in the present embodiment also includes timing control unit, for basis
The grey decision-making control of image to be displayed produces first control signal and second control signal.
For the display device, the present embodiment additionally provides a kind of display methods of display device, and it comprises the steps：
The first control signal of institute and the second control signal are produced according to the control of the grey decision-making of image to be displayed.
Line by line the first control signal is input into for the first control line Control1, and is second according to the grey decision-making of display image
Control line Control2 is input into the second control signal, selectively turns on the enabling unit in corresponding pixel-driving circuit, and
Charge for the energy-storage module in the pixel-driving circuit simultaneously.
Gray scale voltage input Von input service level signals are given, so that luminescence unit is luminous；
After the completion of the grey decision-making of image to be displayed shows, reset signal is input into reset signal input Voff, it is right
Driver element and energy-storage units in each pixel-driving circuit is discharged.
The display methods of display device in order to become apparent from the present embodiment, is included with the enabling unit in pixel-driving circuit
The first transistor T1 and transistor seconds T2；Driver element includes third transistor T3；Discharge cell includes the 4th transistor T4；
Luminescence unit includes organic electroluminescent LED OLED；Energy-storage units are included as a example by storage capacitance C1, and combine accompanying drawing 3-6,
The display methods of the present embodiment display device is described in detail.
Specifically, the first control signal of institute and the second control signal are produced according to the control of the grey decision-making of image to be displayed；It is false
If the highest GTG of wanted display image is L255, such as shown in Fig. 5.
Display process：Show L255 greyscale pixel units：First control line Control1 is input into line scan signals from first
Row starts to the progressive scan of most footline, and the moment that the first control line Control1 starts to scan is designated as ts；Scanning current line correspondence
Pixel cell if desired show L255, then corresponding second control line Control2 input high level signals of the row, now
One transistor T1 and transistor seconds T2 is opened, and storage capacitance C1 is electrically charged, and the control pole of third transistor T3 is set to height,
Third transistor T3 is opened, gray scale voltage input Von input gray scale voltages, the reflective diode of organic electroluminescence flow through electric current and
It is luminous, because storage capacitance C1 is just discharged to the frame end, so third transistor T3 is opened to always the frame end, i.e., should
The reflective diode of organic electroluminescence in pixel-driving circuit then lights always to the frame end.
For example：Such as Fig. 5-7, the pixel cell positioned at the first row first row will show L255, now then to being located at the
During a line control signal wire input high level, while to the second control line Control2 input high levels positioned at first row,
So that the pixel cell can show L255.
Show L254 greyscale pixel units：On in display device the pixel of display L255 GTGs in need flow through electric current
After luminous, timing control unit stand-by period tw, the first control line Control1 line scan signals start full screen scanning next time,
Start to most footline to progressively scan from the first row, the corresponding pixel cell of scanning current line if desired shows L254 GTGs, then should
Arrange corresponding second control line Control2 and be then transfused to operation level, namely be transfused to high level signal, now first crystal
Pipe T1 and transistor seconds T2 is opened, and storage capacitance C1 is electrically charged, and the control pole of third transistor T3 is set to height, and the 3rd is brilliant
Body pipe T3 is opened, and gray scale voltage input Von input gray scale voltages, the reflective diode of organic electroluminescence flows through electric current and lights,
Because storage capacitance C1 is just discharged to the frame end, so third transistor T3 is opened to always the frame end, i.e. the pixel
The reflective diode of organic electroluminescence in drive circuit then lights always to the frame end.
For example：Such as Fig. 5-7, the pixel cell positioned at the second row first row will show L254, now then to being located at the
During two row control signal wire input high levels, while to the second control line Control2 input high levels positioned at first row,
So that the pixel cell can show L254.
By that analogy, the pixel of display L (N+1) (N ＞ 1) GTG in need flow through after galvanoluminescence, SECO
Scan carries out full screen scanning next time after unit stand-by period tw, makes to need the pixel for showing L (N) GTG to flow through electric current
Light.
Show L0 greyscale pixel points：In display device the pixel cell of display L1 GTGs in need flow through galvanoluminescence
Afterwards, timing control unit stand-by period tw, the first control line Control1 line scan signals start full screen scanning next time, from
A line starts to most footline to progressively scan, and now the second control line Control2 keeps low level, makes to need to show L0 GTGs
Third transistor T3 in pixel-driving circuit cannot be opened, and organic electroluminescent LED OLED does not light.Or can show
On showing device the pixel cell of display L1 GTGs in need flow through after galvanoluminescence after timing control unit stand-by period tw+tt
Show for L0 and complete (tt is the time required to Scan is scanned to most footline from the first row).
Discharge regime, namely reseting stage, after the completion of all GTGs show, will be multiple after timing control unit stand-by period tw
Position signal input part Voff input service level signals, namely high level signal, the 4th in all pixels drive circuit is brilliant
Body pipe T4 is opened, and storage capacitance C1 in all pixels drive circuit is discharged and third transistor T3 is closed, next frame
Display starts.
The display methods of the display device provided in the present embodiment is according to " the time integral effect " of human eye, fluorescent lifetime
Length can form bright dark vision difference, by controlling the fluorescent lifetime of luminescence unit realizing different greyscale levels,
I.e. fluorescent lifetime is longer, and corresponding tonal gradation is higher.Meanwhile, using constant current driven luminescence unit, adjust electric current and drive
Time obtains corresponding GTG, to solve the problems, such as brightness of display screen uniformity.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary enforcement for adopting
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, various modifications and improvement can be made, these modifications and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a kind of pixel-driving circuit, it is characterised in that include：Enabling unit, energy-storage units, driver element, discharge cell, send out
Light unit；Wherein,
The enabling unit, the first control line of connection, the second control line, energy-storage units, and driver element, for described the
It is the energy storage under the control of the row control signal that the row control signal and second control line that one control line is entered is input into
Unit charges, and exports enable signal to the driver element；
The driver element, connects the enabling unit, the luminescence unit and gray scale voltage input, in the enable
Under the control of the enable signal that unit is exported, the gray scale voltage that the gray scale voltage input is input into is exported to luminous list
Unit；
The luminescence unit, connects the driver element and common voltage terminal, for lighting under the control of the driver element；
The energy-storage units, connection gray scale voltage input and driver element, for when enabling unit is turned off, maintaining the drive
Moving cell is opened；
The discharge cell, connects the driver element, the energy-storage units, reset signal input and common voltage terminal, uses
Under the control in the reset signal that the reset signal input is input into, the driver element and the energy-storage units are entered
Row electric discharge.
2. pixel-driving circuit according to claim 1, it is characterised in that the enabling unit include the first transistor and
Transistor seconds；Wherein,
First pole of the first transistor connects the first control line, and the second pole connects the first pole of transistor seconds, control pole
Connect second control line；
First pole of the transistor seconds connects the second pole of the first transistor, the second pole connect the energy-storage module and
The drive module, control pole connects first control line.
3. pixel-driving circuit according to claim 1, it is characterised in that the driver element includes third transistor；
Wherein,
First pole of the third transistor connects the gray scale voltage input, and the second pole connects the luminescence unit, control
Pole connects the energy-storage units and the discharge cell.
4. pixel-driving circuit according to claim 1, it is characterised in that the discharge cell includes the 4th transistor；
Wherein,
First pole of the 4th transistor connects the driver element and the energy-storage module, and the second pole connects the common electrical
Pressure side, control pole connects the reset signal input.
5. pixel-driving circuit according to claim 1, it is characterised in that the luminescence unit includes organic electroluminescent
Diode；Wherein,
The first end of the organic electroluminescent LED connects the driver element, and the second end connects the common voltage terminal.
6. pixel-driving circuit according to claim 1, it is characterised in that the energy-storage units include storage capacitance；Its
In,
The first end of the storage capacitance connects the enabling unit and the discharge cell, and the second end connects the driver element
With the gray scale voltage input.
7. a kind of display device, it is characterised in that including the pixel-driving circuit any one of multiple claims 1-6.
8. display device according to claim 7, it is characterised in that multiple pixel-driving circuits are arranged in array,
And the first control line described in the enabling unit connection same in pixel-driving circuit described in same a line；Positioned at same row
Second control line described in enabling unit connection same in the pixel-driving circuit.
9. the display device according to claim 7 or 8, it is characterised in that also including timing control unit, for according to treating
The grey decision-making control of display image produces first control signal and second control signal.
10. a kind of display methods of display device, it is characterised in that include：
The first control signal of institute and the second control signal are produced according to the control of the grey decision-making of image to be displayed；
Line by line the first control signal is input into for the first control line, and is the second control line input the according to the grey decision-making of display image
Two control signals, selectively turn on the enabling unit in corresponding pixel-driving circuit, and while are the pixel-driving circuit
In energy-storage module charge；
Gray scale voltage input input service level signal is given, so that luminescence unit is luminous；
After the completion of the grey decision-making of image to be displayed shows, reset signal is input into reset signal input, to each pixel
Driver element and energy-storage units in drive circuit is discharged.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630152A (en) * | 2018-05-08 | 2018-10-09 | 京东方科技集团股份有限公司 | Display device and its pixel-driving circuit and driving method |
| CN108735155A (en) * | 2018-06-01 | 2018-11-02 | 京东方科技集团股份有限公司 | A kind of pixel circuit, its driving method and display panel, display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003186437A (en) * | 2001-12-18 | 2003-07-04 | Sanyo Electric Co Ltd | Display device |
| CN103400548A (en) * | 2013-07-31 | 2013-11-20 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method and display device thereof |
| CN104916257A (en) * | 2015-07-15 | 2015-09-16 | 京东方科技集团股份有限公司 | Pixel circuit, drive method thereof, display panel and display device |
| CN105096837A (en) * | 2015-09-17 | 2015-11-25 | 京东方科技集团股份有限公司 | Pixel circuit and driving method thereof, display panel and display device |
| WO2015196553A1 (en) * | 2014-06-27 | 2015-12-30 | 京东方科技集团股份有限公司 | Pixel circuit, driving method therefor, organic light-emitting display panel and display device |
-
2017
- 2017-03-15 CN CN201710152969.4A patent/CN106652916B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003186437A (en) * | 2001-12-18 | 2003-07-04 | Sanyo Electric Co Ltd | Display device |
| CN103400548A (en) * | 2013-07-31 | 2013-11-20 | 京东方科技集团股份有限公司 | Pixel driving circuit and driving method and display device thereof |
| WO2015196553A1 (en) * | 2014-06-27 | 2015-12-30 | 京东方科技集团股份有限公司 | Pixel circuit, driving method therefor, organic light-emitting display panel and display device |
| CN104916257A (en) * | 2015-07-15 | 2015-09-16 | 京东方科技集团股份有限公司 | Pixel circuit, drive method thereof, display panel and display device |
| CN105096837A (en) * | 2015-09-17 | 2015-11-25 | 京东方科技集团股份有限公司 | Pixel circuit and driving method thereof, display panel and display device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108630152A (en) * | 2018-05-08 | 2018-10-09 | 京东方科技集团股份有限公司 | Display device and its pixel-driving circuit and driving method |
| US10706789B2 (en) | 2018-05-08 | 2020-07-07 | Boe Technology Group Co., Ltd. | Pixel driving circuit and driving method thereof, and display device |
| CN108735155A (en) * | 2018-06-01 | 2018-11-02 | 京东方科技集团股份有限公司 | A kind of pixel circuit, its driving method and display panel, display device |
| US10726782B2 (en) | 2018-06-01 | 2020-07-28 | Boe Technology Group Co., Ltd. | Pixel circuit, method for driving the same, display panel and display device |
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| CN106652916B (en) | 2019-01-15 |
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