CN110459169A - A kind of digital drive pixel circuit and its driving method and display panel - Google Patents
A kind of digital drive pixel circuit and its driving method and display panel Download PDFInfo
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- CN110459169A CN110459169A CN201910785421.2A CN201910785421A CN110459169A CN 110459169 A CN110459169 A CN 110459169A CN 201910785421 A CN201910785421 A CN 201910785421A CN 110459169 A CN110459169 A CN 110459169A
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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]
-
- 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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
Abstract
The embodiment of the invention discloses a kind of digital drive pixel circuit and its driving method and display panel, wherein digital drive pixel circuit include Data write. module, latch module, at least two light emitting modules and with the one-to-one light emitting control module of light emitting module；Data voltage is written for controlling to latch module in Data write. module；Latch module is used for latch data voltage；Light emitting control module is used for alternate conduction, it is alternately shone with controlling at least two light emitting modules, and then it can be deteriorated to avoid light emitting module long lasting for characteristic caused by work, the problems such as light emitting module fails, so that each light emitting module can carry out the release and cooling of heat when not shining, so that the temperature of each light emitting module will not be excessively high after a period of time that shines, guarantee the superperformance of light emitting module, improves the display effect of the display panel including the digital driver circuitry.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of digital drive pixel circuits and its driving method
And display panel.
Background technique
The job stability of luminescent device has a significant impact to display effect tool in display panel.
In existing display panel, the pixel circuit for generally including multiple luminescent devices and driving luminescent device luminous, still
There are luminescent devices easily to fail in existing display panel, the problem for causing display panel display abnormal.
Summary of the invention
The present invention provides a kind of digital drive pixel circuit and its driving method and display panel, to reduce in display panel
Luminescent device failure, improve the display abnormal problem of display panel.
In a first aspect, the embodiment of the invention provides a kind of digital drive pixel circuit, including Data write. module, latch
Module, at least two light emitting modules and with the one-to-one light emitting control module of light emitting module；
Data voltage is written for controlling to latch module in Data write. module；
Latch module is used for latch data voltage；
Light emitting control module is used for alternate conduction, is alternately shone with controlling at least two light emitting modules.
Optionally, at least two light emitting modules include the first light emitting diode and the second light emitting diode, digital drive picture
Plain circuit includes the first light emitting control module being electrically connected with the first light emitting diode and is electrically connected with the second light emitting diode
Second light emitting control module, the first light emitting diode and the second light emitting diode inverse parallel；
First light emitting control module is used to control the luminance of the first light emitting diode；
Second light emitting control module is used to control the luminance of the second light emitting diode.
Optionally, the first light emitting control module includes the first transistor and second transistor, the second light emitting control module packet
Include third transistor and the 4th transistor；
First clock signal input of the grid of the first transistor, the grid of second transistor and digital drive pixel circuit
End electrical connection, the first pole of the first transistor are electrically connected with latch module, the second pole of the first transistor and the first light-emitting diodes
First pole of pipe is electrically connected, and the second pole of the first light emitting diode is electrically connected with the first pole of second transistor, second transistor
The second pole be electrically connected with the first power voltage input terminal of digital drive pixel circuit；
The second clock signal of the grid of third transistor, the grid of the 4th transistor and digital drive pixel circuit inputs
End electrical connection, the first pole of third transistor are electrically connected with latch module, the second pole of third transistor and the second light-emitting diodes
First pole of pipe is electrically connected, and the second pole of the second light emitting diode is electrically connected with the first pole of the 4th transistor, the 4th transistor
The second pole be electrically connected with the first power voltage input terminal of digital drive pixel circuit.
Optionally, the control terminal of Data write. module is electrically connected with the scanning signal input terminal of digital drive pixel circuit,
The first end of Data write. module is electrically connected with the data voltage input terminal of digital drive pixel circuit, and the of Data write. module
Two ends are electrically connected with the first end of latch module, and the second end of latch module is electrically connected with the first pole of the first transistor, are latched
The second end of module is also electrically connected with the first pole of third transistor；Latch module further includes third end and the 4th end, third end
It is electrically connected with the first power voltage input terminal of digital drive pixel circuit, second electricity at the 4th end and digital drive pixel circuit
The electrical connection of source voltage input end.
Optionally, Data write. module include the 5th transistor, latch module include the 6th transistor, the 7th transistor,
8th transistor, the 9th transistor；Control terminal of the grid of 5th transistor as Data write. module, the of the 5th transistor
First end of one pole as Data write. module, second end of the second pole of the 5th transistor as Data write. module；
The grid of 6th transistor, the grid of the 7th transistor are electrically connected with the second pole of the 5th transistor, the 6th crystal
The grid of pipe, the 7th transistor grid be also electrically connected with the second pole of the 8th transistor, the first pole of the 6th transistor and the
The electrical connection of two power voltage input terminals, the second pole of the 6th crystal are electrically connected with the first pole of the 7th transistor, the 7th transistor
The second pole be electrically connected with the first power voltage input terminal；
The grid of 8th transistor, the grid of the 9th transistor are electrically connected with the second pole of the 6th transistor, the 8th crystal
First pole of pipe is electrically connected with second source voltage input end, and the second pole of the 8th crystal and the first pole of the 9th transistor are electrically connected
It connects, the second pole of the 9th transistor is electrically connected with the first power voltage input terminal；
Wherein, the 6th transistor, the 8th transistor are P-type transistor, and the 7th transistor, the 9th transistor are N-type
Transistor.
Optionally, digital drive pixel circuit further includes drive module, the control terminal and digital drive of Data write. module
The scanning signal input terminal of circuit is electrically connected, and the first end of Data write. module and the data voltage of digital drive pixel circuit are defeated
Enter end electrical connection, the second end of Data write. module is electrically connected with the first end of latch module, the second end and drive of latch module
The control terminal of dynamic model block is electrically connected, the first end of drive module and the second source voltage input end electricity of digital drive pixel circuit
Connection, the second end of drive module is electrically connected with the first pole of the first transistor, the second end of latch module also with third crystal
First pole of pipe is electrically connected；Latch module further includes third end and the 4th end, third end and the first of digital drive pixel circuit
Power voltage input terminal electrical connection, the 4th end is electrically connected with the second source voltage input end of digital drive pixel circuit.
Second aspect, the embodiment of the invention also provides a kind of driving method of digital drive pixel circuit, digital drives
Pixel circuit includes Data write. module, latch module, at least two light emitting modules and shines correspondingly with light emitting module
Control module；The driving method of digital drive pixel circuit includes:
Data write. module conducting is controlled, data voltage is written to latch module；
Control and the one-to-one light emitting control module alternate conduction of at least two light emitting modules, at least two hair of control
Optical module alternately shines.
Optionally, the driving method of digital drive pixel circuit further include:
Grayscale to be shown is needed to adjust the first clock signal input terminal and/or second clock signal input part according to present frame
The pulse width of input, the pulse of the first clock signal input terminal input and the pulse of second clock signal input part input are not deposited
Overlapping.
Optionally, the driving method of digital drive pixel circuit further include:
The pulse width of the data voltage of grayscale adjusting data voltage input terminal input to be shown is needed according to present frame.
The third aspect, the embodiment of the invention also provides a kind of display panel, which includes that first aspect provides
Digital drive pixel circuit.
The embodiment of the invention provides a kind of digital drive pixel circuit and its driving methods and display panel, wherein number
Driving pixel circuit includes Data write. module, latch module, at least two light emitting modules and one-to-one with light emitting module
Light emitting control module；Data voltage is written for controlling to latch module in Data write. module；Latch module is used for latch data
Voltage；Light emitting control module is used for alternate conduction, is alternately shone with controlling at least two light emitting modules, and then can be to avoid luminous
The problems such as module is deteriorated long lasting for characteristic caused by work, and light emitting module fails, so that each light emitting module is luminous one
After the section time, the release and cooling of heat can be carried out when not shining, so that the unlikely mistake of the temperature of each light emitting module
Height guarantees the superperformance of light emitting module, improves the display effect of the display panel including the digital driver circuitry.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of working timing figure of digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 7 is a kind of flow chart of the driving method of digital drive pixel circuit provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
As described in the background art, there are luminescent devices easily to fail in existing display panel, leads to display panel
There is the abnormal problem of display.Through inventor the study found that generally included in existing display panel multiple sub-pixels and with sub- picture
The one-to-one pixel circuit of element generally includes a luminescent device in each sub-pixel, when display panel is shown, often
Luminescent device in a sub-pixel needs persistently to be lit, so that luminescent device works for a long time, luminescent device is persistently grown
Time service makes the characteristic of luminescent device be deteriorated, for example, luminescent device works for a long time will lead to luminescent device fever,
And heat, which is built up, to be discharged, and the characteristic of luminescent device is influenced so that the service life reduction of luminescent device, occur failing or
Not working causes display abnormal.
For these reasons, the embodiment of the invention provides a kind of digital drive pixel circuit, Fig. 1 is the embodiment of the present invention
A kind of structural schematic diagram of the digital drive pixel circuit provided, with reference to Fig. 1, which includes data write-in
Module 110, latch module 120, at least two light emitting modules 130 and with the one-to-one light emitting control module of light emitting module 130
140；
Data voltage is written for controlling to latch module 120 in Data write. module 110；
Latch module 120 is used for latch data voltage；
Light emitting control module 140 is used for alternate conduction, is alternately shone with controlling at least two light emitting modules 130.
Specifically, the data voltage of digital drive pixel circuit usually only includes black state data voltage and illuminated state data electricity
Pressure, black state data voltage and illuminated state data voltage can be definite value, and black state is written to latch module 120 in Data write. module 110
When data voltage, light emitting module 130 does not shine, when illuminated state data voltage is written to latch module 120 in Data write. module 110,
Light emitting module 130 shines.It is usually aobvious by controlling the luminous duration control of each light emitting module 130 in digital drive pixel circuit
Show grayscale.For example, one frame is divided into multiple subframes, is shone in each subframe when scanning each pixel circuit using subfield scanning method
The luminous duration of module 130 is different, by control light emitting module 130 each subframe luminance (including shine and do not shine)
To control luminous duration of the light emitting module 130 in a frame, and then display ash of the control light emitting module 130 in a frame picture
Rank.
Fig. 1 schematically illustrates a kind of structure of digital drive pixel circuit, with reference to Fig. 1, the digital drive pixel electricity
The control terminal of Lu Zhong, Data write. module 110 are electrically connected with scanning signal input terminal Scan, and the first of Data write. module 110
End is electrically connected with data voltage input terminal Vdata, and the second end of Data write. module 110 is electrically connected with latch module 120, is latched
Module 120 is also electrically connected with the first power voltage input terminal VSS and second source voltage input end VDD respectively, latch module 120
It is also electrically connected with light emitting control module 140, each light emitting control module 140 is electrically connected a light emitting module 130, light emitting module 130
It is connected to the first power voltage input terminal VSS.It should be noted that the structure of digital drive pixel circuit shown by Fig. 1 is
A kind of exemplary pixels circuit structure of the embodiment of the present invention, digital drive pixel circuit of the invention can also be other structures.
In digital drive pixel circuit provided in this embodiment, including at least two light emitting modules 130 and with luminous mould
The one-to-one light emitting control module 140 of block 130 controls the luminance of light emitting module 130 by light emitting control module 140,
A light emitting control module 140 light emitting module 130 can be controlled when shining in pixel circuit, other light emitting control modules 140
It controls other light emitting modules 130 not shine, and then light emitting module 130 alternately shines in controllable pixels circuit, alternately shining can
To be that each light emitting module 130 alternately shines in a subframe, it is also possible to each light emitting module 130 in a frame and alternately shines.Example
Property, when in digital drive pixel circuit including two light emitting modules 130, if two light emitting modules 130 of control are in a son
It alternately shines in frame, controllable two light emitting modules 130 are the duration that always shines in the subframe in the fluorescent lifetime in the subframe
Half；If controlling two light emitting modules 130 alternately to shine in a frame, it can control two light emitting modules 130 respectively different
When shining in subframe, such as a frame being divided into four subframes, then when corresponding maximum display grayscale, it can control one of them mould that shines
Block 130 shines in the first subframe and third subframe, another light emitting module 130 shines in the second subframe and the 4th subframe.
Digital drive pixel circuit provided in an embodiment of the present invention controls each light emitting module by light emitting control module and replaces
Shine, can be deteriorated to avoid light emitting module long lasting for characteristic caused by work, light emitting module failure the problems such as so that each
Light emitting module can carry out the release and cooling of heat when not shining, reduce the accumulation of heat, make after a period of time that shines
The temperature for obtaining each light emitting module is not excessively high, guarantees the superperformance of light emitting module, so that the work of pixel circuit is more stable,
Improve the performance and display effect of the display panel including the digital driver circuitry.Also, number provided in an embodiment of the present invention
Pixel circuit, including at least two light emitting modules are driven, and then can be passed through after a light emitting module is damaged or fails
Extend the fluorescent lifetime of other light emitting modules to guarantee the grayscale of display, also, after a light emitting module damages or fails, can lead to
The access for crossing change timing closing damage light emitting module prevents short circuit from causing other and shows exceptions and power consumption increase.
Above in core of the invention thought, the attached drawing in conjunction with the embodiments is continued with, in the embodiment of the present invention
Technical solution is clearly and completely described, it is clear that and described embodiments are only a part of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
It puts, every other embodiment obtained shall fall within the protection scope of the present invention.
Fig. 2 is that the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention can with reference to Fig. 2
Choosing, at least two light emitting modules include the first light emitting diode D1 and the second light emitting diode D2, digital drive pixel circuit
It is electrically connected including the first light emitting control module 141 being electrically connected with the first light emitting diode D1 and with the second light emitting diode D2
Second light emitting control module 142, the first light emitting diode D1 and the second light emitting diode D2 inverse parallel；
First light emitting control module 141 is used to control the luminance of the first light emitting diode D1；
Second light emitting control module 142 is used to control the luminance of the second light emitting diode D2.
Specifically, the first light emitting diode D1 and the second light emitting diode D2 inverse parallel, i.e. the first light emitting diode D1's
Anode is electrically connected with the cathode of the second light emitting diode D2, the cathode of the first light emitting diode D1 and the second light emitting diode D2's
Anode electrical connection.When first light emitting diode D1 shines, the cathode of the first light emitting diode D1 is generally attached to low potential, and first
The anode of light emitting diode D1 is connected to high potential；When second light emitting diode D2 shines, the cathode of the second light emitting diode D2
It is generally attached to low potential, the anode of the second light emitting diode D2 is connected to high potential.The hair of first light emitting diode D1 and second
When optical diode D2 inverse parallel, the first light emitting diode D1 and the second light emitting diode D2 alternately shine, such as first luminous two
When pole pipe D1 shines, the anode of the second light emitting diode D2 is pulled low to current potential identical with the first light emitting diode D1 cathode,
And then the remaining charge of possibility of the second light emitting diode D2 anode can be eliminated, avoid the second light emitting diode D2 anode from remaining
Charge impacts display effect；Correspondingly, when the second light emitting diode D2 shines, the anode electricity of the first light emitting diode D1
Position is pulled low to current potential identical with the cathode of the second light emitting diode D2, and then can eliminate the first light emitting diode D1 anode
Possible remaining charge, avoids the first light emitting diode D1 anode residual charge from impacting display effect.
It should be noted that the first light emitting diode D1 and the second light emitting diode D2 can be in the embodiment of the present invention
Organic Light Emitting Diode, is also possible to inorganic light-emitting diode, such as Micro-LED, and the embodiment of the present invention is not done specifically herein
It limits.
With continued reference to Fig. 2, based on the above technical solution, optionally, the first light emitting control module 141 includes first
Transistor T1 and second transistor T2, the second light emitting control module 142 include third transistor T3 and the 4th transistor T4；
First clock signal of the grid of the first transistor T1, the grid of second transistor T2 and digital drive pixel circuit
Input terminal CK electrical connection, the first pole of the first transistor T1 is electrically connected with latch module 120, the second pole of the first transistor T1 and
The first pole of first light emitting diode D1 is electrically connected, the second pole of the first light emitting diode D1 and the first pole of second transistor T2
Electrical connection, the second pole of second transistor T2 is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit；
The second clock signal of the grid of third transistor T3, the grid of the 4th transistor T4 and digital drive pixel circuit
Input terminal CKB electrical connection, the first pole of third transistor T3 are electrically connected with latch module 120, the second pole of third transistor T3
It is electrically connected with the first pole of the second light emitting diode D2, the second pole of the second light emitting diode D2 and the first of the 4th transistor T4
Pole electrical connection, the second pole of the 4th transistor T4 is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit.
With continued reference to Fig. 2, based on the above technical solution, optionally, the control terminal and number of Data write. module 110
The scanning signal input terminal Scan of word drive pixel circuit is electrically connected, the first end and digital drive picture of Data write. module 110
The data voltage input terminal Vdata of plain circuit is electrically connected, the second end of Data write. module 110 and the first of latch module 120
End electrical connection, the second end of latch module 120 are electrically connected with the first pole of the first transistor T1, the second end of latch module 120
Also it is electrically connected with the first pole of third transistor T3；Latch module 120 further includes third end and the 4th end, and third end and number are driven
The second source electricity of the first power voltage input terminal VSS electrical connection of dynamic pixel circuit, the 4th end and digital drive pixel circuit
Press input terminal VDD electrical connection.
Wherein, the first transistor T1, second transistor T2, third transistor T3 and the 4th transistor T4 can be p-type crystalline substance
Body pipe is also possible to N-type transistor, below with the first transistor T1, second transistor T2, third transistor T3 and the 4th crystal
Pipe T4 be P-type transistor for schematically illustrated.When illuminated state data are written to latch module 120 in Data write. module 110
Voltage, and when the first clock signal input terminal CK input low level signal, the first transistor T1 and second transistor T2 conducting, the
One light emitting diode D1 shines.When Data write. module 110 inputs illuminated state data voltage, and second clock signal input part CKB
When input low level signal, third transistor T3 and the 4th transistor T4 conducting, the second light emitting diode D2 shines, and then passes through
The control of the clock signal of clock signal and second clock signal input part CKB input to the first clock signal input terminal CK input
It makes, realizes that the first light emitting diode D1 of control and the second light emitting diode D2 alternately shines, and then can be to avoid first luminous two
The problems such as pole pipe D1 or the second light emitting diode D2 is deteriorated long lasting for characteristic caused by work, fails, so that first shines
Diode D1 and the second light emitting diode D2 can carry out the release of heat and cold when not shining after a period of time that shines
But, so that the temperature of the first light emitting diode D1 and the second light emitting diode D2 will not be excessively high, guarantee the first light-emitting diodes
The superperformance of pipe D1 and the second light emitting diode D2 improve the display effect of the display panel including the digital driver circuitry.
Also, parasitic capacitance, the second crystal are formed between the source electrode and drain electrode of the first transistor T1 in the first light emitting control module 141
The source electrode and drain electrode of pipe T2 also forms parasitic capacitance, correspondingly, the source of the third transistor T3 in the second light emitting control module 142
Parasitic capacitance is formed between pole and drain electrode, and the source electrode and drain electrode of the 4th transistor T4 also forms parasitic capacitance, and parasitic capacitance can be with
The effect of filtering clutter is played, so that display effect is more preferably.
It should be noted that in the embodiment of the present invention, the first light emitting control module 141 and the second light emitting control module 142
Two transistors can be not limited to only including, can also include greater number of transistor, the present invention is not specifically limited herein.
Fig. 3 is that the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention can with reference to Fig. 3
Choosing, Data write. module 110 includes the 5th transistor T5, and latch module 120 includes the 6th transistor T6, the 7th transistor
T7, the 8th transistor T8, the 9th transistor T9；Control terminal of the grid of 5th transistor T5 as Data write. module 110, the
First end of the first pole of five transistor T5 as Data write. module 110, the second pole of the 5th transistor T5 is write as data
Enter the second end of module 110；
The grid of 6th transistor T6, the grid of the 7th transistor T7 are electrically connected with the second pole of the 5th transistor T5, the
The grid of six transistor T6, the grid of the 7th transistor T7 are also electrically connected with the second pole of the 8th transistor T8, the 6th transistor
The first pole of T6 is electrically connected with second source voltage input end VDD, the second pole of the 6th crystal and the first of the 7th transistor T7
Pole electrical connection, the second pole of the 7th transistor T7 is electrically connected with the first power voltage input terminal VSS；
The grid of 8th transistor T8, the grid of the 9th transistor T9 are electrically connected with the second pole of the 6th transistor T6, the
The first pole of eight transistor T8 is electrically connected with second source voltage input end VDD, the second pole of the 8th crystal and the 9th transistor
The first pole of T9 is electrically connected, and the second pole of the 9th transistor T9 is electrically connected with the first power voltage input terminal VSS；
Wherein, the 6th transistor T6, the 8th transistor T8 are P-type transistor, and the 7th transistor T7, the 9th transistor T9 are
N-type transistor.
Wherein, the first transistor T1, second transistor T2, third transistor T3, the 4th transistor T4 and the 5th transistor
T5 can be P-type transistor, be also possible to N-type transistor, below with the first transistor T1, second transistor T2, third crystal
Pipe T3, the 4th transistor T4 and the 5th transistor T5 be P-type transistor for schematically illustrated.
Fig. 4 is a kind of working timing figure of digital drive pixel circuit provided in an embodiment of the present invention, and number shown in Fig. 4 is driven
The working sequence of dynamic pixel circuit can digital drive pixel circuit shown in corresponding diagram 3, and working sequence shown in Fig. 4 can correspond to one
Working sequence in subframe.With reference to Fig. 3 and Fig. 4, in scanning signal input terminal Scan input low level pulse signal, the 5th is brilliant
Body pipe T5 conducting, data voltage input terminal Vdata input data voltage, with reference to Fig. 3, if data voltage is low level in the subframe
Data voltage, the grid of the 6th transistor T6 and the 7th transistor T7 of the low-level data voltage input to latch module 120,
So that the 6th transistor T6 is connected, the high level voltage of second source input terminal input is transmitted to first by the 6th transistor T6
The first pole of transistor T1 and third transistor T3；Within the period of scanning signal input terminal Scan input low level pulse,
First clock signal input terminal CK and second clock signal input part CKB replaces input low level pulse signal, so that the first hair
Photocontrol module 141 (including the first transistor T1 and second transistor T2) and 142 (third transistor of the second light emitting control module
T3 and the 4th transistor T4) alternate conduction so that latch module 120 export high level signal alternate transport to first hair
The anode of optical diode D1 and the second light emitting diode D2, so that the first light emitting diode D1 and the second light emitting diode D2 are at this
It alternately shines, and then can be made to avoid the first light emitting diode D1 or the second light emitting diode D2 long lasting for work in subframe
At characteristic be deteriorated, failure the problems such as so that the first light emitting diode D1 and the second light emitting diode D2 shine a period of time
Afterwards, the release and cooling that heat can be carried out when not shining, so that the first light emitting diode D1 and the second light-emitting diodes
The temperature of pipe D2 will not be excessively high, guarantees the superperformance of the first light emitting diode D1 and the second light emitting diode D2, and raising includes
The display effect of the display panel of the digital driver circuitry.
With continued reference to Fig. 4, what the pulsewidth of scanning pulse signal was usually fixed, for the display for realizing different grayscale, can lead to
Overregulate the pulse width or the first clock signal input terminal CK input of the data voltage of data voltage input terminal Vdata input
The pulse width of clock signal and/or the pulse width of clock signal of second clock signal input part CKB input adjust
Luminous duration of the light emitting module in each subframe, and then realize the display of different grayscale.
Fig. 5 is that the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention can with reference to Fig. 5
Choosing, digital drive pixel circuit further includes drive module 150, the control terminal and digital driver circuitry of Data write. module 110
Scanning signal input terminal Scan electrical connection, the data electricity of the first end of Data write. module 110 and digital drive pixel circuit
Input terminal Vdata electrical connection is pressed, the second end of Data write. module 110 is electrically connected with the first end of latch module 120, latches mould
The second end of block 120 is electrically connected with the control terminal of drive module 150, first end and digital drive the pixel electricity of drive module 150
The second source voltage input end VDD on road is electrically connected, and the second end of drive module 150 is electrically connected with the first pole of the first transistor T1
It connects, the second end of latch module 120 is also electrically connected with the first pole of third transistor T3；Latch module 120 further includes third end
With the 4th end, third end is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit, and the 4th end and number are driven
The second source voltage input end VDD electrical connection of dynamic pixel circuit.
With reference to Fig. 5, after data voltage is written to latch module 120 in Data write. module 110, latch module 120 is to the number
It is latched according to voltage, and the data voltage is transmitted to the control terminal of drive module 150, drive module 150 can be according to the number
According to voltage turn-on or shutdown, and in conducting by the second source voltage transmission of second source voltage input end VDD input to the
The first pole of one transistor T1 and third transistor T3, when the first transistor T1 and second transistor T2 is connected, drive module
150 can drive the first light emitting diode D1 to shine, when third transistor T3 and the 4th transistor T4 is connected, drive module 150
The second light emitting diode D2 can be driven to shine.
Fig. 6 is the structural schematic diagram of another digital drive pixel circuit provided in an embodiment of the present invention, the digital drive
Pixel circuit can be with the materialization circuit of digital drive pixel circuit shown in corresponding diagram 5.With reference to Fig. 6, drive module 150 includes the
Ten transistor T10, wherein the tenth transistor T10 can be P-type transistor, be also possible to N-type transistor, Fig. 6 is with the tenth crystal
Pipe T10 be P-type transistor for schematically shown.
It should be noted that data voltage input terminal Vdata inputs low electricity when the tenth transistor T10 is P-type transistor
When flat pulse signal, because the output of latch module 120 is high level voltage signal, the tenth transistor T10 shutdown, the first light emitting control
Module (the first transistor T1 and second transistor T2) is unable to control the first light emitting diode D1 and shines, the second light emitting control module
(third transistor T3 and the 4th transistor T4) is also unable to control the second light emitting diode D2 and shines, i.e., defeated in corresponding data voltage
In the subframe for entering to hold Vdata input low level pulse signal, the first light emitting diode D1 and the second light emitting diode D2 are not sent out
Light.When data voltage input terminal Vdata input high level pulse signal, the 7th transistor T7 in latch module 120 is connected, lock
The exportable low level signal of storing module 120, drive module 150 are connected, the second source of second source voltage input end VDD input
Voltage can be transmitted to the first pole of the first transistor T1 and third transistor T3, lead in the first transistor T1 and second transistor T2
When logical, drive module 150 can drive the first light emitting diode D1 to shine, and be connected in third transistor T3 and the 4th transistor T4
When, drive module 150 can drive the second light emitting diode D2 to shine.
The embodiment of the invention also provides a kind of driving methods of digital drive pixel circuit, with reference to Fig. 1, digital drive picture
Plain circuit includes Data write. module 110, latch module 120, at least two light emitting modules and one-to-one with light emitting module
Light emitting control module 140；Fig. 7 is a kind of process of the driving method of digital drive pixel circuit provided in an embodiment of the present invention
Figure, with reference to Fig. 7, the driving method of digital drive pixel circuit includes:
Step 210, control Data write. module conducting, are written data voltage to latch module；
Step 220, control and the one-to-one light emitting control module alternate conduction of at least two light emitting modules, to control extremely
Few two light emitting modules alternately shine.
The driving method of digital drive pixel circuit provided in this embodiment passes through control and at least two light emitting modules one
One corresponding light emitting control module alternate conduction is alternately shone with controlling at least two light emitting modules, can be to avoid light emitting module
Be deteriorated long lasting for characteristic caused by work, light emitting module fail the problems such as so that each light emitting module shine one section when
Between after, the release and cooling of heat can be carried out when not shining, so that the temperature of each light emitting module will not be excessively high, is protected
The superperformance of light emitting module is demonstrate,proved, the display effect of the display panel including the digital driver circuitry is improved.
With reference to Fig. 2, on that basis of the above technical scheme, optionally, at least two light emitting modules include the first light-emitting diodes
Pipe D1 and the second light emitting diode D2, digital drive pixel circuit include that first be electrically connected with the first light emitting diode D1 shines
Control module 141 and the second light emitting control module 142 being electrically connected with the second light emitting diode D2, the first light emitting diode D1 and
Second light emitting diode D2 inverse parallel；
First light emitting control module 141 includes the first transistor T1 and second transistor T2, the second light emitting control module 142
Including third transistor T3 and the 4th transistor T4；
First clock signal of the grid of the first transistor T1, the grid of second transistor T2 and digital drive pixel circuit
Input terminal CK electrical connection, the first pole of the first transistor T1 is electrically connected with latch module 120, the second pole of the first transistor T1 and
The first pole of first light emitting diode D1 is electrically connected, the second pole of the first light emitting diode D1 and the first pole of second transistor T2
Electrical connection, the second pole of second transistor T2 is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit；
The second clock signal of the grid of third transistor T3, the grid of the 4th transistor T4 and digital drive pixel circuit
Input terminal CKB electrical connection, the first pole of third transistor T3 are electrically connected with latch module 120, the second pole of third transistor T3
It is electrically connected with the first pole of the second light emitting diode D2, the second pole of the second light emitting diode D2 and the first of the 4th transistor T4
Pole electrical connection, the second pole of the 4th transistor T4 is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit；
The driving method of digital drive pixel circuit further include:
Grayscale to be shown is needed to adjust the first clock signal input terminal and/or second clock signal input part according to present frame
The pulse width of input, the pulse of the first clock signal input terminal input and the pulse of second clock signal input part input are not deposited
Overlapping.
Specifically, can refer to timing diagram shown in Fig. 4, illustratively, in the data voltage of data voltage input terminal input
It, can be by adjusting the input of the first clock signal input terminal when pulse width is equal with the pulse width that scanning signal input terminal inputs
Clock signal pulse width and/or second clock signal input part input clock signal pulse width so that first
The arteries and veins of the clock signal of the pulse width and second clock signal input part input of the clock signal of clock signal input terminal input
Pulse width of the sum of the width less than or equal to the data voltage of data voltage input terminal input is rushed, and then can control a son
The total luminous duration of light emitting module in frame can be with by adjusting the luminous duration of light emitting module in pixel circuit in each subframe
Realize the display of different grayscale.Also, the clock signal and second clock signal of the input of the first clock signal input terminal are defeated
Enter the clock signal of end input there is no overlapping, the control luminous to the first light emitting diode and light emitting diode alternating may be implemented
System.
With continued reference to Fig. 2, based on the above technical solution, optionally, at least two light emitting modules include the first hair
Optical diode D1 and the second light emitting diode D2, digital drive pixel circuit include be electrically connected with the first light emitting diode D1
One light emitting control module 141 and the second light emitting control module 142 being electrically connected with the second light emitting diode D2, the first light-emitting diodes
Pipe D1 and the second light emitting diode D2 inverse parallel；
First light emitting control module 141 includes the first transistor T1 and second transistor T2, the second light emitting control module 142
Including third transistor T3 and the 4th transistor T4；
First clock signal of the grid of the first transistor T1, the grid of second transistor T2 and digital drive pixel circuit
Input terminal CK electrical connection, the first pole of the first transistor T1 is electrically connected with latch module 120, the second pole of the first transistor T1 and
The first pole of first light emitting diode D1 is electrically connected, the second pole of the first light emitting diode D1 and the first pole of second transistor T2
Electrical connection, the second pole of second transistor T2 is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit；
The second clock signal of the grid of third transistor T3, the grid of the 4th transistor T4 and digital drive pixel circuit
Input terminal CKB electrical connection, the first pole of third transistor T3 are electrically connected with latch module 120, the second pole of third transistor T3
It is electrically connected with the first pole of the second light emitting diode D2, the second pole of the second light emitting diode D2 and the first of the 4th transistor T4
Pole electrical connection, the second pole of the 4th transistor T4 is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit；
The control terminal of Data write. module 110 is electrically connected with the scanning signal input terminal Scan of digital drive pixel circuit,
The first end of Data write. module 110 is electrically connected with the data voltage input terminal Vdata of digital drive pixel circuit, data write-in
The second end of module 110 is electrically connected with the first end of latch module 120, the second end and the first transistor T1 of latch module 120
The electrical connection of the first pole, the second end of latch module 120 is also electrically connected with the first pole of third transistor T3；Latch module 120
It further include third end and the 4th end, third end is electrically connected with the first power voltage input terminal VSS of digital drive pixel circuit, the
Four ends are electrically connected with the second source voltage input end VDD of digital drive pixel circuit；
The driving method of digital drive pixel circuit further include:
The pulse width of the data voltage of grayscale adjusting data voltage input terminal input to be shown is needed according to present frame.
Specifically, the size whether light emitting module can shine also with the data voltage of data voltage input terminal input has
It closes, therefore, the pulse width of the data voltage by adjusting the input of data voltage input terminal can also be realized and be shone to light emitting module
The control of duration, and then grayscale to be shown can be needed according to present frame, adjust the data voltage of data voltage input terminal input
Pulse width controls the luminous duration of light emitting module in each subframe, so control that light emitting module in a frame shines it is total when
It is long, and then realize the display of different grayscale.
The embodiment of the invention also provides a kind of display panel, Fig. 8 is a kind of display panel provided in an embodiment of the present invention
Structural schematic diagram, with reference to Fig. 8, which includes the digital drive pixel electricity that any of the above-described embodiment of the present invention provides
Road 100, wherein digital drive pixel circuit 100 include Data write. module, latch module, at least two light emitting modules and with hair
The one-to-one light emitting control module of optical module；Data voltage is written for controlling to latch module in Data write. module；It latches
Module is used for latch data voltage；Light emitting control module is used for alternate conduction, is alternately shone with controlling at least two light emitting modules,
And then can be deteriorated to avoid light emitting module long lasting for characteristic caused by work, light emitting module failure the problems such as so that each
Light emitting module can carry out the release and cooling of heat when not shining after a period of time that shines, so that each shine
The temperature of module will not be excessively high, guarantees the superperformance of light emitting module, improves the display panel including the digital driver circuitry
Display effect.Optionally, multiple pixel circuits array arrangement in display panel, the display panel further include multiple data lines
(D1, D2, D3, D4 ...), multi-strip scanning line (S1, S2, S3, S4 ...), every scan line connect a line digital drive pixel
Circuit 100, every data line connect a columns word drive pixel circuit 100.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of digital drive pixel circuit, which is characterized in that shine including Data write. module, latch module, at least two
Module and with the one-to-one light emitting control module of the light emitting module；
Data voltage is written for controlling to the latch module in the Data write. module；
The latch module is for latching the data voltage；
The light emitting control module is used for alternate conduction, is alternately shone with controlling at least two light emitting module.
2. digital drive pixel circuit according to claim 1, which is characterized in that at least two light emitting module includes
First light emitting diode and the second light emitting diode, the digital drive pixel circuit include being electrically connected with the first light emitting diode
The first light emitting control module and the second light emitting control module for being electrically connected with second light emitting diode, described first shines
Diode and the second light emitting diode inverse parallel；
The first light emitting control module is used to control the luminance of first light emitting diode；
The second light emitting control module is used to control the luminance of second light emitting diode.
3. digital drive pixel circuit according to claim 2, which is characterized in that the first light emitting control module includes
The first transistor and second transistor, the second light emitting control module include third transistor and the 4th transistor；
First clock of the grid of the first transistor, the grid of the second transistor and the digital drive pixel circuit
Signal input part electrical connection, the first pole of the first transistor are electrically connected with the latch module, the first transistor
Second pole is electrically connected with the first pole of first light emitting diode, the second pole of first light emitting diode and described second
First pole of transistor is electrically connected, the first power supply electricity of the second pole of the second transistor and the digital drive pixel circuit
Press input terminal electrical connection；
The second clock of the grid of the third transistor, the grid of the 4th transistor and the digital drive pixel circuit
Signal input part electrical connection, the first pole of the third transistor are electrically connected with the latch module, the third transistor
Second pole is electrically connected with the first pole of second light emitting diode, the second pole of second light emitting diode and the described 4th
First pole of transistor is electrically connected, the second pole of the 4th transistor and the first power supply electricity of the digital drive pixel circuit
Press input terminal electrical connection.
4. digital drive pixel circuit according to claim 3, which is characterized in that the control terminal of the Data write. module
It is electrically connected with the scanning signal input terminal of the digital drive pixel circuit, the first end of the Data write. module and the number
The data voltage input terminal of word drive pixel circuit is electrically connected, the second end of the Data write. module and the latch module
First end electrical connection, the second end of the latch module are electrically connected with the first pole of the first transistor, the latch module
Second end be also electrically connected with the first pole of the third transistor；The latch module further includes third end and the 4th end, institute
It states third end to be electrically connected with the first power voltage input terminal of the digital drive pixel circuit, the 4th end and the number
Drive the second source voltage input end electrical connection of pixel circuit.
5. digital drive pixel circuit according to claim 4, which is characterized in that the Data write. module includes the 5th
Transistor, the latch module include the 6th transistor, the 7th transistor, the 8th transistor, the 9th transistor；Described 5th is brilliant
First pole of control terminal of the grid of body pipe as the Data write. module, the 5th transistor is written as the data
The first end of module, second end of the second pole of the 5th transistor as the Data write. module；
The grid of 6th transistor, the grid of the 7th transistor are electrically connected with the second pole of the 5th transistor,
The grid of 6th transistor, the grid of the 7th transistor are also electrically connected with the second pole of the 8th transistor, institute
The first pole for stating the 6th transistor is electrically connected with the second source voltage input end, the second pole of the 6th crystal with it is described
First pole of the 7th transistor is electrically connected, and the second pole and first power voltage input terminal of the 7th transistor are electrically connected
It connects；
The grid of 8th transistor, the grid of the 9th transistor are electrically connected with the second pole of the 6th transistor,
First pole of the 8th transistor is electrically connected with the second source voltage input end, the second pole of the 8th crystal and institute
The first pole electrical connection of the 9th transistor is stated, the second pole and first power voltage input terminal of the 9th transistor are electrically connected
It connects；
Wherein, the 6th transistor, the 8th transistor are P-type transistor, the 7th transistor, the 9th crystalline substance
Body pipe is N-type transistor.
6. digital drive pixel circuit according to claim 3, which is characterized in that it further include drive module, the data
The control terminal of writing module is electrically connected with the scanning signal input terminal of the digital driver circuitry, and the of the Data write. module
One end is electrically connected with the data voltage input terminal of the digital drive pixel circuit, the second end of the Data write. module and institute
The first end electrical connection of latch module is stated, the second end of the latch module is electrically connected with the control terminal of the drive module, institute
The first end for stating drive module is electrically connected with the second source voltage input end of the digital drive pixel circuit, the driving mould
The second end of block is electrically connected with the first pole of the first transistor, the second end of the latch module also with the third crystal
First pole of pipe is electrically connected；The latch module further includes third end and the 4th end, the third end and the digital drive picture
First power voltage input terminal of plain circuit is electrically connected, the second source electricity of the 4th end and the digital drive pixel circuit
Press input terminal electrical connection.
7. a kind of driving method of digital drive pixel circuit, which is characterized in that the digital drive pixel circuit includes data
Writing module, latch module, at least two light emitting modules and with the one-to-one light emitting control module of the light emitting module；It is described
The driving method of digital drive pixel circuit includes:
The Data write. module conducting is controlled, data voltage is written in Xiang Suoshu latch module；
Control and the one-to-one light emitting control module alternate conduction of at least two light emitting module, to control described at least two
A light emitting module alternately shines.
8. the driving method of digital drive pixel circuit according to claim 7, which is characterized in that
At least two light emitting module includes the first light emitting diode and the second light emitting diode, the digital drive pixel electricity
Road includes the first light emitting control module being electrically connected with the first light emitting diode and is electrically connected with second light emitting diode
Second light emitting control module, first light emitting diode and the second light emitting diode inverse parallel；
The first light emitting control module includes the first transistor and second transistor, and the second light emitting control module includes the
Three transistors and the 4th transistor；
First clock of the grid of the first transistor, the grid of the second transistor and the digital drive pixel circuit
Signal input part electrical connection, the first pole of the first transistor are electrically connected with the latch module, the first transistor
Second pole is electrically connected with the first pole of first light emitting diode, the second pole of first light emitting diode and described second
First pole of transistor is electrically connected, the first power supply electricity of the second pole of the second transistor and the digital drive pixel circuit
Press input terminal electrical connection；
The second clock of the grid of the third transistor, the grid of the 4th transistor and the digital drive pixel circuit
Signal input part electrical connection, the first pole of the third transistor are electrically connected with the latch module, the third transistor
Second pole is electrically connected with the first pole of second light emitting diode, the second pole of second light emitting diode and the described 4th
First pole of transistor is electrically connected, the second pole of the 4th transistor and the first power supply electricity of the digital drive pixel circuit
Press input terminal electrical connection；
The driving method of the digital drive pixel circuit further include:
Need grayscale adjusting first clock signal input terminal to be shown and/or the second clock signal defeated according to present frame
Enter the pulse width of end input, the pulse of the first clock signal input terminal input and the second clock signal input part are defeated
There is no overlapping for the pulse entered.
9. the driving method of digital drive pixel circuit according to claim 7, which is characterized in that at least two hair
Optical module includes the first light emitting diode and the second light emitting diode, and the digital drive pixel circuit includes and first luminous two
First light emitting control module of pole pipe electrical connection and the second light emitting control module being electrically connected with second light emitting diode, institute
State the first light emitting diode and the second light emitting diode inverse parallel；
The first light emitting control module includes the first transistor and second transistor, and the second light emitting control module includes the
Three transistors and the 4th transistor；
First clock of the grid of the first transistor, the grid of the second transistor and the digital drive pixel circuit
Signal input part electrical connection, the first pole of the first transistor are electrically connected with the latch module, the first transistor
Second pole is electrically connected with the first pole of first light emitting diode, the second pole of first light emitting diode and described second
First pole of transistor is electrically connected, the first power supply electricity of the second pole of the second transistor and the digital drive pixel circuit
Press input terminal electrical connection；
The second clock of the grid of the third transistor, the grid of the 4th transistor and the digital drive pixel circuit
Signal input part electrical connection, the first pole of the third transistor are electrically connected with the latch module, the third transistor
Second pole is electrically connected with the first pole of second light emitting diode, the second pole of second light emitting diode and the described 4th
First pole of transistor is electrically connected, the second pole of the 4th transistor and the first power supply electricity of the digital drive pixel circuit
Press input terminal electrical connection；
The control terminal of the Data write. module is electrically connected with the scanning signal input terminal of the digital drive pixel circuit, described
The first end of Data write. module is electrically connected with the data voltage input terminal of the digital drive pixel circuit, the data write-in
The second end of module is electrically connected with the first end of the latch module, the second end of the latch module and the first transistor
The electrical connection of the first pole, the second end of the latch module is also electrically connected with the first pole of the third transistor；The latch
Module further includes third end and the 4th end, first power voltage input terminal at the third end and the digital drive pixel circuit
Electrical connection, the 4th end is electrically connected with the second source voltage input end of the digital drive pixel circuit；
The driving method of the digital drive pixel circuit further include:
The pulse width of the data voltage of the data voltage input terminal input is adjusted according to present frame need grayscale to be shown.
10. a kind of display panel, which is characterized in that including digital drive pixel circuit described in any one of claims 1-6.
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| CN111261102A (en) * | 2020-03-02 | 2020-06-09 | 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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