CN109616052A - Display panel, pixel circuit and its driving method - Google Patents
Display panel, pixel circuit and its driving method Download PDFInfo
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- CN109616052A CN109616052A CN201811537144.5A CN201811537144A CN109616052A CN 109616052 A CN109616052 A CN 109616052A CN 201811537144 A CN201811537144 A CN 201811537144A CN 109616052 A CN109616052 A CN 109616052A
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- pixel circuit
- switching tube
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- switch
- tube
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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
Abstract
This application discloses a kind of display panel, pixel circuit and its driving methods, it includes first switch tube and electroluminescent cell that wherein pixel circuit, which includes driving chip, several pixel circuit units connecting with driving chip and several circuit for detecting units, pixel circuit unit,；Each circuit for detecting unit includes selection circuit, selection circuit includes second switch and connection switch pipe, first path terminal of second switch connects the anode of electroluminescent cell therein by connection switch pipe with pixel circuit unit, the control terminal of second switch connects the first clock signal end, and the alternate path end of second switch connects driving chip；It is connected between at least two circuit for detecting units being disposed adjacent by connection terminal in a second direction, and connects the same pin of driving chip by the connection terminal.The application can detect convenient for the anode potential of high pixel density display panel, and the display effect of display panel can be improved.
Description
Technical field
The present invention relates to field of display technology, and in particular to a kind of display panel, pixel circuit and its driving method.
Background technique
AMOLED (Active-matrix organic light-emitting diode, active matrix organic light-emitting two
Polar body or active-matrix organic light emitting diode) display screen is mechanical, electrical since the advantages such as wide viewing angle, low-power consumption are widely used in hand
Depending in.
However, as time goes by, OLED (organic light-emitting diode, organic light emitting diode)
Efficiency also can fast decay, this will lead to screen body brightness gradually decrease.Display effect is influenced, influence display panel uses the longevity
Life.
Summary of the invention
The application mainly solves the problems, such as to be to provide a kind of display panel, pixel circuit and its driving method, can be improved
The display effect of display panel improves the service life of display panel.
In order to solve the above technical problems, the technical solution that the application uses is: providing a kind of pixel circuit, pixel electricity
Road includes driving chip and several pixel circuit units connecting with driving chip and several circuit for detecting units,
In, one group of pixel circuit unit that the correspondence of each circuit for detecting unit independently is arranged along first direction, and with one group of picture
Each selectively coupled connection of pixel circuit unit, first direction are the pixel circuit unit being arranged in array in plain circuit unit
Line direction or column direction；Wherein, each pixel circuit unit includes at least first switch tube and electroluminescent cell, and first opens
The path terminal for closing pipe is electrically connected with the anode of electroluminescent cell, and the control terminal of first switch tube connects scanning signal end；Often
One circuit for detecting unit includes at least selection circuit, and selection circuit includes at least second switch and connection switch pipe, and second opens
The first path terminal for closing pipe connects the anode of electroluminescent cell therein by connection switch pipe with respective pixel circuit unit,
The control terminal of second switch connects the first clock signal end, and the alternate path end of second switch connects driving chip；Wherein,
When the second switch in circuit for detecting unit is in the conductive state and the pixel circuit unit of coupled connection in first
When switching tube is also on state, driving chip detects electricity in the corresponding pixel circuit unit of first switch tube of on state
The current potential of the anode of electroluminescent element, the circuit for detecting unit that at least two in this second direction are disposed adjacent are one
Group is connected in one group by connection terminal between at least two circuit for detecting units being disposed adjacent, and passes through the connection terminal
The same pin of the driving chip is connected, the second direction is different from first direction, is the pixel electricity being arranged in array
The column direction or line direction of road unit.
In order to solve the above technical problems, that the application uses another solution is that providing a kind of above-mentioned pixel circuit
Driving method, driving method include: the current potential of the anode of electroluminescent cell in each pixel circuit unit of detecting, and will be electroluminescent
The current potential of the anode of light-emitting component is embodied in formation anode voltage thermal compensation signal in driving chip；Wherein, each pixel circuit list
Member includes at least first switch tube and electroluminescent cell；Each circuit for detecting unit includes at least selection circuit, selection circuit
Including at least second switch and connection switch pipe；Detect the current potential of the anode of electroluminescent cell in each pixel circuit unit
The step of include: input the first clock signal control circuit for detecting unit in second switch conducting, input scanning signal control
First switch tube is connected in respective pixel circuit unit, and controls connection switch pipe conducting so that driving chip with it is right
It answers the anode of electroluminescent cell in pixel circuit unit to be connected, and then obtains the current potential of the anode of electroluminescent cell；Driving
Chip calls anode voltage thermal compensation signal and exports anode voltage thermal compensation signal to corresponding pixel circuit unit；Wherein, defeated
In the step of entering second switch conducting in the first clock signal control circuit for detecting unit, control is located at least two in same group
Second switch in a connected circuit for detecting is individually connected, and obtains respective pixel electricity respectively with section in different times
The current potential of the anode of the electroluminescent cell in the unit of road.
In order to solve the above technical problems, the another technical solution that the application uses is: providing a kind of display panel, the display
Panel includes substrate and the pixel circuit that is set on substrate, and pixel circuit is above-mentioned pixel circuit.
The application includes driving chip and several pixel circuits connecting with driving chip by setting pixel circuit
Unit and several circuit for detecting units, using circuit for detecting unit conducting driving chip with it is electroluminescent in respective pixel circuit unit
The anode of light-emitting component.So as to get the anode potential of electroluminescent cell convenient for driving chip, it is convenient for subsequent display
Compensation of the stage to anode potential, the circuit can be merged preferably with pixel circuit unit, and circuit structure is simple, and the circuit
Structure designs convenient for reconnaissance phase with the display stage independently of each other, so that reconnaissance phase will not have an impact the display stage, and
And it is connected between circuit for detecting unit by connection terminal by that will be located in one group, and drive is correspondingly connected with by the connection terminal
The same pin of dynamic chip, can save the pin on driving chip, convenient for the saving of hardware resource.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.Wherein:
Fig. 1 is the electrical block diagram of the pixel circuit of the application first embodiment；
Fig. 2 is the electrical block diagram of the pixel circuit of the application second embodiment；
Fig. 3 is the schematic illustration of the embodiment of the present application double grid switching tube structure；
Fig. 4 is the flow diagram of the embodiment of the driving method of the pixel circuit of the embodiment of the present application；
Fig. 5 is that a kind of detailed process in display stage of embodiment of the driving method of the pixel circuit of the embodiment of the present application is shown
It is intended to；
Fig. 6 is the structural schematic diagram of the embodiment of the present application display panel.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, rather than whole embodiments.Based on this
Embodiment in application, those of ordinary skill in the art are obtained every other under the premise of not making creative labor
Embodiment shall fall in the protection scope of this application.
Referring to Fig. 1, Fig. 1 is the electrical block diagram of the pixel circuit of the application first embodiment.
In the present embodiment, pixel circuit includes driving chip 10 and several pixels connecting with driving chip 10 electricity
Road unit 20 and several circuit for detecting units 30.
One group of pixel circuit unit 20 that the correspondence of each circuit for detecting unit 30 independently is arranged along first direction, and
With the selectively coupled connection of pixel circuit unit 20 each in one group of pixel circuit unit 20, first direction is arranged in array
The line direction or column direction of pixel circuit unit 20.
For example, first direction can be the column direction for the pixel circuit unit being arranged in array.It is only to illustrate in Fig. 1,
Only illustrate the company of a pixel circuit unit 20 and circuit for detecting unit 30 in several pixel circuit units 20 of a column
Relationship is connect, it can be appreciated that other pixel circuit units 20 and the connection relationship of the circuit for detecting unit 30 of the column are same,
It is not embodied one by one in figure.
It is connected between at least two circuit for detecting units 30 being disposed adjacent by connection terminal in a second direction, and is led to
The same pin of the connection terminal connection driving chip 10 is crossed, second direction is different from first direction, to be arranged in array
Pixel circuit unit 20 column direction or line direction.For example, as shown in Figure 1, two adjacent circuit for detecting units 30 are one
Group is connected by connection terminal between the two；Certainly in a further embodiment, the circuit for detecting unit 30 in one group is not
Be limited to two, can for three, four, it is even more.For example, as shown in Figure 1, second direction is the pixel electricity being arranged in array
The line direction of road unit 20.
Each pixel circuit unit 20 includes at least first switch tube T1 and electroluminescent cell D, first switch tube T1's
One path terminal is electrically connected with the anode of electroluminescent cell D, control terminal connection scanning signal (scan) end of first switch tube T1.
Each circuit for detecting unit 30 include at least selection circuit 31, selection circuit 31 include at least second switch T2 and
The first path terminal of connection switch pipe T0, second switch T2 are connected by connection switch pipe T0 and respective pixel circuit unit 20
The anode of electroluminescent cell D in its (referring to the respective pixel circuit unit), the control terminal connection the of second switch T2
Alternate path end (as connection terminal) the connection driving chip 10 at one clock signal (S1) end, second switch T2 is (corresponding
Pin).The control terminal of connection switch pipe T0 connects prearranged signals end in order to control the switch of connection switch pipe T0；For example, even
The control terminal for connecing switch transistor T 0 connects normally opened signal (S0) end, and connection switch pipe T0 is held on.Wherein, respective pixel electricity
Road unit refers to the pixel circuit unit in the conductive state with circuit for detecting unit 30.
When the second switch T2 in circuit for detecting unit 30 is in the conductive state and the pixel circuit of coupled connection
When first switch tube T1 in unit 20 is also on state, driving chip 10 detects T1 pairs of first switch tube of on state
The current potential of the anode of electroluminescent cell D in the pixel circuit unit 20 answered.
Optionally, the first switch tube T1 in each pixel circuit unit 20 to arrange in a second direction is connected to a scanning
Signal end is shared with scan signal scan.Optionally, each circuit for detecting unit 30 further comprises reset circuit 32,
Reset circuit 32 includes at least third switch transistor T 3, and the first path terminal of third switch transistor T 3 passes through connection switch pipe T0 and correspondence
Pixel circuit unit 20 connects the anode of electroluminescent cell D in its (referring to the respective pixel circuit unit), third switching tube
The control terminal of T3 connects the second clock signal S2, alternate path end connection reset signal (reset) end of third switch transistor T 3.
Referring to Fig. 2, Fig. 2 is the electrical block diagram of the pixel circuit of the application second embodiment.
In the present embodiment, each pixel circuit unit 20 further comprise storage capacitance C and with electroluminescent cell D
One end of the current control driving tube (T5) that anode is of coupled connections, storage capacitance C is selectively of coupled connections with driving chip 10, separately
One end selectivity and the control terminal of current control driving tube (T5) are of coupled connections, for receiving and storing from driving chip 10
Anode voltage thermal compensation signal, and according to anode voltage compensation signal control current control driving tube (T5).
First path terminal of third switch transistor T 3 is (in the feelings of connection switch pipe conducting in each circuit for detecting unit 30
Under condition) selectively it is of coupled connections with storage capacitance C, for carrying out selective reset processing to storage capacitors C.By to storage electricity
Hold C and carry out reset processing, is conducive to improve storage capacitance C to the storage precision of anode voltage thermal compensation signal.
It optionally, further include the tenth switch transistor T 10 in the selection circuit of each circuit for detecting unit, the tenth opens
The first path terminal and one end of storage capacitance C for closing pipe T10 are of coupled connections, the alternate path end of the tenth switch transistor T 10 with connect
Terminal and driving chip 10 connect, and the control terminal of the tenth switch transistor T 10 connects the 5th clock signal end (S5).
Optionally, pixel circuit unit 20 further comprises the 4th switch transistor T 4, the 5th driving tube T5, the 6th switching tube
T6, the 7th switch transistor T 7, the 8th switch transistor T 8 and the 9th switch transistor T 9, wherein the 5th driving tube T5 is current control driving
Pipe.
First path terminal of the 4th switch transistor T 4 connects the first end of the first operating voltage VDD and storage capacitors C, stores up simultaneously
The first end for depositing capacitor C also connects the end the first operating voltage (VDD), the 5th driving of alternate path end connection of the 4th switch transistor T 4
The first path terminal of pipe T5 and the alternate path end of the 9th switch transistor T 9, while the first path terminal of the 5th driving tube T5 also connects
The alternate path end of 9th switch transistor T 9, control terminal connection enable signal (EM) end of the 4th switch transistor T 4.
The alternate path end of 5th driving tube T5 connects the first path terminal and the 7th switch transistor T 7 of the 6th switch transistor T 6
Alternate path end, while the first path terminal of the 6th switch transistor T 6 also connects the alternate path end of the 7th switch transistor T 7；5th drives
The second end of the control terminal connection storage capacitance C of dynamic pipe T5.
The alternate path end of the alternate path end connection first switch tube T1 of 6th switch transistor T 6 and electroluminescent cell D
Anode, control terminal connection enable signal (EM) end of the 6th switch transistor T 6.
First path terminal of the 7th switch transistor T 7 connects the control terminal of the 5th driving tube T5 and the second end of storage capacitors, the
Control terminal connection third clock signal (S3) end of seven switch transistor Ts 7.
The second end of the first path terminal connection storage capacitance C of 8th switch transistor T 8, the alternate path of the 8th switch transistor T 8
End connects the first path terminal of the connection switch pipe T0 and the first path terminal of first switch tube T1, the connection switch pipe T0
Alternate path end connection first switch tube T1 the first path terminal, the first path terminal of second switch T2 and third switching tube
The first path terminal of T3, the control terminal of the 8th switch transistor T 8 connect the 4th clock signal (S4) end.
First path terminal of the 9th switch transistor T 9 connects the first path terminal of the 5th switch transistor T 5, and the of the 9th switch transistor T 9
Two path terminals connect the first path terminal of the tenth switch transistor T 10, and the alternate path end of the tenth switch transistor T 10 connects aforementioned connecting pin
Son and connection driving chip 10 (respective pins), control terminal connection third clock signal (S3) end of the 9th switch transistor T 9, the
The control terminal of ten switch transistor Ts 10 connects the 5th clock signal (S5) end.
First end connection the first operating voltage (VDD) end of storage capacitance C, the cathode connection second of electroluminescent cell D
First path terminal and the 8th at operating voltage (VSS) end, the first path terminal connection first switch tube T1 of second switch T2 is opened
Close the alternate path end of pipe T8, the first path terminal and the 8th of the first path terminal connection first switch tube T1 of third switch transistor T 3
The alternate path end of switch transistor T 8.
Optionally, the first switch tube T1 in each pixel circuit unit 20 to arrange in a second direction shares same scanning letter
The end number (scan)；First switch tube T1 in each pixel circuit unit 20 of first direction arrangement, which is respectively independently connected, accordingly to be swept
Retouch signal；In reconnaissance phase and display stage, pixel circuit unit 20 each in pixel circuit is swept line by line along first direction
It retouches.
Optionally, corresponding to each pixel circuit unit 20 arranged in a second direction, third is opened in circuit for detecting unit 30
It closes pipe T3 and shares same second clock signal S2 and same reset signal reset.
Optionally, corresponding to each pixel circuit unit 20 arranged in a second direction, second is opened in circuit for detecting unit 30
When the control terminal of pass pipe T2 accesses different first according to the luminescent color of electroluminescent cell D in respective pixel circuit unit 20
Sequential signal S1 (R), S1 (G) or S1 (B).
Optionally, corresponding to each group of adjacent two pixel circuit unit 20 arranged in a second direction, circuit for detecting
The alternate path end of second switch T2 is correspondingly connected with the same input and output pin of driving chip 10 in unit 30.
For example, second direction is line direction, with each pixel circuit list of a line as shown in Figure 1, first direction is column direction
First switch tube T1 in member 20 is shared with scan signal scan；First switch in each pixel circuit unit 20 of same row
Pipe T1 is respectively independently connected respective scanned signal, i.e., does not receive scanning signal simultaneously；In reconnaissance phase and display stage, along column side
Each pixel circuit unit 20 progressively scans in pixel circuit.For each pixel circuit unit 20 of same a line, detecting
Third switch transistor T 3 shares same second clock signal S2 and same reset signal reset in circuit unit 30.For same a line
Each pixel circuit unit 20, the control terminal of second switch T2 is according to respective pixel circuit unit 20 in circuit for detecting unit 30
The luminescent color of middle electroluminescent cell D accesses different the first clock signal S1 (R), S1 (G) or S1 (B)；For same
Each group of capable adjacent two pixel circuit unit 20, the alternate path end pair of second switch T2 in circuit for detecting unit 30
The same input and output pin of driving chip 10 should be connected.For example, as shown, four pixels from left to right in the row direction
In circuit unit 20, the connection terminal of the adjacent pixel circuit unit 20 of the first two connects same input and output pin Out (1),
The connection terminal of latter two adjacent pixel circuit unit 20 connects same input and output pin Out (2).
Specifically, each pixel circuit unit 20 correspond to display panel a sub-pixel unit, such as Fig. 2 in from
Left-to-right three sub-pixel units are respectively red sub-pixel unit (R), green sub-pixels unit (G), blue subpixels list
First (B).The sub-pixel unit (RGB) of adjacent three kinds of colors of red, green, blue forms a pixel unit, by controlling sub-pix
The different grayscale of unit, so that sub-pixel unit (RGB) colour mixture of three kinds of colors of red, green, blue realizes that the difference of pixel unit is aobvious
Show color.
A scanning signal scan, which is shared, positioned at the sub-pixel unit of the different colours of same a line (shares same scanning
Line), share the same reset signal reset, share the same second clock signal S2.The company of every group of adjacent sub-pixel unit
The same input and output pin of the correspondingly connected driving chip 10 of connecting terminal.The second switch of the sub-pixel unit of different colours
The connection that the control terminal of T2 connects correspondingly different the first clock signal S1 (R), S1 (G) or S1 (B).
Referring to Fig. 3, Fig. 3 is the schematic illustration of the embodiment of the present application double grid switching tube structure.Optionally, the 7th switch
Pipe T7 and the 8th switch transistor T 8 are double grid switching tube structure, and double grid switching tube structure includes the first sub switch pipe T01 and second
The grid of sub switch pipe T02, the first sub switch pipe T01 and the second sub switch pipe T02 are connected together as double grid switching tube knot
The control terminal of structure, first path terminal of the first path terminal of the first sub switch pipe T01 as double grid switching tube structure, the second son are opened
Close alternate path end of the alternate path end of pipe T02 as double grid switching tube structure, the alternate path end of the first sub switch pipe T01
It is connected with the first path terminal of the second sub switch pipe T02.
By the above-mentioned means, the leakage current of the 7th switch transistor T 7 and the 8th switch transistor T 8 can be reduced, power loss is reduced,
Promote the display effect of electroluminescent cell D.Certainly, in other embodiments, the 7th switch transistor T 7 and the 8th switch transistor T 8
The metal-oxide-semiconductor of single gate can be used, the embodiment of the present application does not limit this.
Optionally, first switch tube T1, second switch T2, third switch transistor T 3, the 4th switch transistor T 4, the 5th driving tube
T5, the 6th switch transistor T 6, the 7th switch transistor T 7, the 8th switch transistor T 8 and the 9th switch transistor T 9 are can be for metal-oxide-semiconductor, specifically
It can be thin film transistor (TFT), and the first path terminal is connected with alternate path end when control terminal accesses low potential, terminated in control
The first path terminal and alternate path end are ended when entering high potential.In other embodiments, opposite configuration can be carried out, for example,
When control terminal accesses low potential, the first path terminal and alternate path end are ended, the first path terminal when control terminal accesses high potential
It is connected with alternate path end.For example, p-type metal-oxide-semiconductor is the conducting when control terminal accesses low-potential signal, when accessing high potential signal
Cut-off；N-type metal-oxide-semiconductor is ended when accessing low potential in control terminal access high potential conducting.
Optionally, first switch tube T1, second switch T2, third switch transistor T 3, the 4th switch transistor T 4, the 5th driving tube
T5, the 6th switch transistor T 6, the 7th switch transistor T 7, the 8th switch transistor T 8 and respective first path terminal of the 9th switch transistor T 9 and
One of them in two path terminals is source electrode, and another one is drain electrode, and respective control terminal is grid.
Optionally, electroluminescent cell can be OLED light-emitting component, specifically can be AMOLED (Active-matrix
Organic light-emitting diode, active matrix organic light-emitting diode or active-matrix organic light emitting diode).
In other embodiments, it can also not limited this using other electroluminescent cells, the embodiment of the present application.
Referring to Fig. 4, Fig. 4 is the flow diagram of the embodiment of the driving method of the pixel circuit of the embodiment of the present application.
In the present embodiment, the driving method of pixel circuit can include:
Step S11: reconnaissance phase: the current potential of the anode of electroluminescent cell in each pixel circuit unit is detected, and will
The current potential of the anode of electroluminescent cell is embodied in formation anode voltage thermal compensation signal in driving chip.
Wherein, each pixel circuit unit 20 includes at least first switch tube T1 and electroluminescent cell D；Each detecting electricity
Road unit 30 includes at least selection circuit 31, and selection circuit includes at least second switch T2 and connection switch pipe T0；Detecting is every
The step of current potential of the anode of electroluminescent cell D, can specifically include in one pixel circuit unit 20: input the first timing letter
The first path terminal and the conducting of alternate path end of second switch T2, inputs scanning signal in number S1 control circuit for detecting unit 30
Scan controls the first path terminal and the conducting of alternate path end of first switch tube T1, and controls the connection switch pipe conducting, with
So that driving chip 10 is connected with the anode of electroluminescent cell D in respective pixel circuit unit 20, and then obtain electroluminescent
The current potential of the anode of element D.
Wherein, in the first clock signal S1 of input control circuit for detecting unit 30 the step of second switch T2 conducting,
Control is located at second switch T2 points in same group (circuit for detecting unit) at least two adjacent circuit for detecting units 30
It is not connected not individually, obtains the anode of the electroluminescent cell D in respective pixel circuit unit 30 respectively with section in different times
Current potential.
For example, as shown in Figure 1, existing at this time in one group of circuit for detecting unit including two circuit for detecting units 30 in Fig. 1
In the step of inputting second switch T2 conducting in the first clock signal S1 control circuit for detecting unit 30, in first time period control
Make the second switch of one of circuit for detecting unit 30 in two adjacent in a second direction pixel circuit units 20
T2 conducting, the second switch T2 cut-off of another circuit for detecting unit 30；In the second time period for being different from first time period
Control the second switch T2 cut-off of one of circuit for detecting unit 30 above-mentioned, another circuit for detecting unit 30 above-mentioned
Second switch T2 conducting, and then obtain corresponding electroluminescent cell D's in first time period and second time period respectively
The current potential of anode.In other words, corresponding (refer to and two adjacent detectings electricity is obtained in first time period and second time period respectively
Road unit is corresponding) adjacent two groups of electroluminescent hairs along the pixel circuit unit 20 of first direction (such as column direction in figure) arrangement
The current potential of the anode of optical element D.
For example, being obtained respectively in first time period and second time period adjacent in the case where being column direction in a first direction
The electroluminescent cell D of the pixel circuit unit 20 of two column.The respective period (first time period and second time period) into
One step controls first switch tube T1 by scanning signal Scan and obtains to 20 timesharing of each pixel circuit unit of same row
The current potential of the anode of electroluminescent cell D in respective pixel circuit unit 20.
Optionally, in reconnaissance phase, the current potential of the current potential of the first clock signal S1 and the second clock signal S2 can not have
It is required that enabling to electroluminescent cell D to shine, but in order to reduce reconnaissance phase for the shadow of electroluminescent cell D
Ring, it is proposed that the current potential of the current potential of the first clock signal S1 and the second clock signal S2 it is small as far as possible.
For the first clock signal S1 can there is no limit as long as keep employed in each reconnaissance phase in the application
First clock signal S1 is identical, and keeps the second clock signal S2 employed in each reconnaissance phase identical, by detecing every time
The potential difference for surveying the anode of electroluminescent cell D forms anode voltage thermal compensation signal.
Step S12: the display stage: driving chip calls anode voltage thermal compensation signal and exports anode voltage thermal compensation signal
To corresponding pixel circuit unit.
Each circuit for detecting unit 30 further comprises reset circuit 32 in the application, and reset circuit 32 includes at least third
Switch transistor T 3 and connection switch pipe T0；Optionally, the electricity of the anode of electroluminescent cell D in each pixel circuit unit 20 is detected
The step of position further include: right in advance in obtaining respective pixel circuit unit 20 before the current potential of the anode of electroluminescent cell D
The current potential of the anode of electroluminescent cell D carries out initialization process.
The step of wherein carrying out initialization process to the current potential of the anode of electroluminescent cell D includes: the second timing of input
Signal S2 controls the first path terminal and the conducting of alternate path end of third switch transistor T 3, and input scanning signal scan control first is opened
The first path terminal and the conducting of alternate path end of pipe T1 are closed, and controls the connection switch pipe conducting, so that reset signal
(reset) end is connected with the anode of electroluminescent cell D in respective pixel circuit unit 20, and then to electroluminescent cell D's
The current potential of anode is initialized.
Optionally, the electroluminescent member in detecting one group of pixel circuit unit 20 corresponding with a circuit for detecting unit 30
During the current potential (including the process initialized to anode) of the anode of part D, the second clock signal S2 of input control the
The first path terminal and alternate path end constant conduction of three switch transistor Ts 3, so that electroluminescent cell D continuous illumination, thus
Influence of the reconnaissance phase for electroluminescent cell D can be reduced.
Referring to Fig. 5, Fig. 5 is a kind of embodiment display stage of the driving method of the pixel circuit of the embodiment of the present application
Idiographic flow schematic diagram.Each pixel circuit unit 20 further includes storage capacitance C and couples company with the anode of electroluminescent cell D
The current control driving tube (T5) connect, the selection circuit of each pixel circuit unit further comprise the tenth switching tube.
Optionally, the display stage can specifically include:
Step S121: signal write-in processing is carried out to storage capacitance C in each pixel circuit unit 20.
Wherein, the step of carrying out signal write-in processing to storage capacitance C in each pixel circuit unit 20 includes: that control is detectd
The tenth switch transistor T 10 and connection switch pipe T0 are in the conductive state in slowdown monitoring circuit unit 30, and control the tenth switch transistor T 10 with it is right
Answer the circuit between the storage capacitance C in pixel circuit unit 20 in the conductive state, so that driving chip 10 and respective pixel
Storage capacitance C in circuit unit 20 is electrically connected, and then 10 Anodic voltage compensation signal of driving chip is exported to corresponding picture
In storage capacitors C in plain circuit unit 20.
Optionally, in the step of carrying out signal write-in processing to storage capacitance C in each pixel circuit unit 20, further include
The step of (before signal write-in) carries out initialization process to the storage capacitance C in respective pixel circuit unit 20 in advance；To right
The step of answering storage capacitance C in pixel circuit unit 20 to carry out initialization process includes: the in control circuit for detecting unit 30
Three switch transistor Ts 3 and connection switch pipe T0 are in the conductive state, and control in third switch transistor T 3 and respective pixel circuit unit 20
Storage capacitance C between circuit it is in the conductive state so that reset signal (reset) end with respective pixel circuit unit 20 in
Storage capacitance C conducting, and then storage capacitance C is initialized.
Wherein, the circuit controlled between the storage capacitance C in the tenth switch transistor T 10 and respective pixel circuit unit 20 is in
In the step of on state, controls second switch T2 in corresponding circuit for detecting unit 30 and be in off state, and control and be located at
The tenth switch transistor T 10 in same group at least two adjacent circuit for detecting units 30 is individually connected, different
Period exports 10 Anodic voltage compensation signal of driving chip in the storage capacitors C into respective pixel circuit unit 20.
Specifically, as shown in Fig. 2, including two circuit for detecting units being disposed adjacent in one group of circuit for detecting unit 30
30, at this point, the circuit controlled between the storage capacitance C in the tenth switch transistor T 2 and respective pixel circuit unit 20 is on shape
In the step of state, one of circuit for detecting unit 30 in two adjacent circuit for detecting units 30 is controlled in the third period
The tenth switch transistor T 10 it is in the conductive state, the tenth switch transistor T 10 of another circuit for detecting unit 20 is in off state；
It is in the tenth switch transistor T 10 that the 4th period for being different from the third period controls one of circuit for detecting unit 30
Tenth switch transistor T 10 of off state, another circuit for detecting unit 30 is in the conductive state, so that in the third period
With the 4th period respectively it is independent to corresponding pixel circuit unit 20 carry out by 10 Anodic voltage compensation of driving chip believe
Number step of the output in storage capacitors C into respective pixel circuit unit 20.
The control terminal of tenth switch transistor T 10 of one of circuit for detecting unit 30 and another circuit for detecting unit 30
The control terminal of the tenth switch transistor T 10 access the 5th different clock signal S5.As shown in Fig. 2, one of circuit for detecting
The control terminal of tenth switch transistor T 10 of unit 30 accesses the 5th clock signal S5 (1), and the of another circuit for detecting unit 30
The control terminal of ten switch transistor Ts 10 accesses the 5th clock signal S5 (2).
Optionally, (the one of detecting electricity above-mentioned of the previous circuit for detecting unit 30 in each group circuit for detecting unit
Road unit 30) the control terminal of the tenth switch transistor T 10 access identical 5th clock signal S5 (1), the latter circuit for detecting
The control terminal of tenth switch transistor T 10 of unit 30 (another circuit for detecting unit 30 above-mentioned) accesses identical 5th timing
Signal S5 (2).
Controlled by the 5th clock signal S5 of input the tenth switch transistor T 10 in corresponding circuit for detecting unit 30 conducting or
Person's cut-off.
Step S122: electroluminescent cell D is driven in each pixel circuit unit 20 to carry out luminous.
Wherein driving in each pixel circuit unit 20 electroluminescent cell D to carry out luminous step includes: release storage
Electric current in capacitor C opens shape to control to be in current control driving tube (T5) storage capacitance C in the conductive state
State, so that corresponding electroluminescent cell D is in luminance.
Optionally, electroluminescent cell D in each pixel circuit unit 20 is driven to carry out luminous step, further include (
Before promoting electroluminescent cell D to shine) anode of the electroluminescent cell D in respective pixel circuit unit 20 is answered in advance
The step of position processing；The step of reset processing is carried out to the anode of the electroluminescent cell D in respective pixel circuit unit 20 packet
Include: third switch transistor T 3 and connection switch pipe T0 are in the conductive state in control circuit for detecting unit 30, and control corresponding picture
First switch tube T1 is in the conductive state in plain circuit unit 20, so that reset signal (reset) end and respective pixel circuit list
The anode conducting of electroluminescent cell D in member 20, carries out reset processing with the anode potential to corresponding electroluminescent cell D.
Current control driving tube optionally, reconnaissance phase use reset signal and the display stage used by reset signal
Difference, specifically, the current potential of reset signal reset is higher than the second operating voltage VSS, and reset signal in reconnaissance phase
The pressure difference of reset and the second operating voltage VSS are greater than the cut-in voltage of electroluminescent cell D.In the display stage, reset signal
The current potential of reset is less than or equal to the current potential of the second operating voltage VSS.By the above-mentioned means, enabling to electroluminescent in reconnaissance phase
Light-emitting component D shines, to reduce influence of the detecting process for electroluminescent cell D.
As shown in Fig. 2, each pixel circuit unit 20 further comprises the 4th switch transistor T 4, the 5th driving tube T5, the 6th
Switch transistor T 6, the 7th switch transistor T 7, the 8th switch transistor T 8 and the 9th switch transistor T 9.
Specifically, in the step of carrying out signal write-in processing to storage capacitance C in each pixel circuit unit 20,
The step of carrying out initialization process to the storage capacitance in respective pixel circuit unit includes: control enable signal
EM to control the first path terminal and the cut-off of alternate path end of the 4th switch transistor T 4, and controls the first of the 6th switch transistor T 6 and leads to
Terminal and the cut-off of alternate path end；Scanning signal scan is controlled, is led to controlling the first path terminal and second of first switch tube T1
Terminal cut-off；Third clock signal S3 is controlled, to control the first path terminal and the cut-off of alternate path end of the 7th switch transistor T 7, and
Control the first path terminal and the cut-off of alternate path end of the 9th switch transistor T 9；The second clock signal S2 is inputted, is opened with controlling third
Close the first path terminal and the conducting of alternate path end of pipe T3；Control connection switch pipe is held on；The 4th clock signal S4 is inputted,
With control the 8th switch transistor T 8 the first path terminal and alternate path end conducting so that reset signal reset to storage capacitance C into
Row resets.
10 Anodic voltage compensation signal of driving chip is exported to the step of the storage capacitors into respective pixel circuit unit
Suddenly include: control enable signal EM, to control the first path terminal and the cut-off of alternate path end of the 4th switch transistor T 4, and control the
First path terminal of six switch transistor Ts 6 and the cut-off of alternate path end；Scanning signal scan is controlled, to control first switch tube T1's
First path terminal and the cut-off of alternate path end；The 4th clock signal S4 is controlled, to control the first path terminal of the 8th switch transistor T 8
End with alternate path end；Third clock signal S3 is inputted, to control the first path terminal and alternate path of the 7th switch transistor T 7
End conducting, and control the first path terminal and the conducting of alternate path end of the 9th switch transistor T 9；The 5th clock signal S5 is inputted, with control
The first path terminal and the conducting of alternate path end for making the tenth switch transistor T 10, so that driving chip 10 is by anode voltage thermal compensation signal
Storage capacitance C is written.
In the step of describing in front, the 5th driving tube T5 is also on state, this is because storage capacitance C exists
After completing initialization process, a constant current can be retained, this portion of electrical current can input the control terminal of the 5th driving tube, with control the 5th
The first path terminal of driving tube T5 and the conducting of alternate path end, the tenth switch transistor T 10, connection switch pipe T0, the 9th switch at this time
Pipe T9, the 5th driving tube T5 and the 7th switch transistor T 7 are on state, and driving chip 10, which can compensate anode voltage, to be believed
Number write-in storage capacitance C, at the same time, 7 first path terminal of the 7th switch transistor T output electric current understand some flow into the 5th drive
The control terminal of dynamic pipe T5, it is in the conductive state with the first path terminal and the alternate path end that control the 5th driving tube T5.
Specifically, electroluminescent cell D in each pixel circuit unit 20 is driven to carry out in luminous step,
The step of carrying out reset processing to the anode of the electroluminescent cell D in respective pixel circuit unit 20 includes: control
Enable signal EM processed to control the first path terminal and the cut-off of alternate path end of the 4th switch transistor T 4, and controls the 6th switching tube
The first path terminal of T6 and the cut-off of alternate path end；Third clock signal S3 is controlled, it is logical with control the 7th switch transistor T 7 first
Terminal and the cut-off of alternate path end, and control the first path terminal and the cut-off of alternate path end of the 9th switch transistor T 9；Control the 4th
Clock signal S4 inputs scanning signal scan to control the first path terminal and the cut-off of alternate path end of the 8th switch transistor T 8, with
Control the first path terminal and the conducting of alternate path end of first switch tube T1；The second clock signal is inputted, to control third switch
The first path terminal of pipe T3 and alternate path end；The first path terminal and alternate path end for controlling connection switch pipe are held on,
So that reset signal reset resets the anode potential of electroluminescent cell D.
So that it includes: control scanning signal scan control that corresponding electroluminescent cell D, which is in the step of luminance,
First path terminal of one switch transistor T 1 and the cut-off of alternate path end；Third clock signal S3 is controlled, to control the 7th switch transistor T 7
The first path terminal and alternate path end cut-off, and control the 9th switch transistor T 9 the first path terminal and alternate path end cut-off；
The 4th clock signal S4 is controlled, to control the first path terminal and the cut-off of alternate path end of the 8th switch transistor T 8；The enabled letter of input
Number EM to control the first path terminal and the conducting of alternate path end of the 4th switch transistor T 4, and controls the first of the 6th switch transistor T 6
Path terminal and the conducting of alternate path end, so that electroluminescent cell D shines.
In above-mentioned any one embodiment, driving method may include inputting normally opened signal S0 control connection switch pipe T0 to protect
Hold on state.For example, control connection switch pipe T0 is tended to remain in entire driving method implementation procedure.
Driving method provided herein is a continuous process, and specifically, control scanning signal scan is to along the
Each pixel circuit unit 20 of one direction arrangement scan line by line (second direction), to positioned at same row (second direction) and even
Be connected to 20 synchronous scanning of each pixel circuit unit positioned at different groups of circuit for detecting unit, with carry out storage capacitance C initialization,
The write-in of storage capacitance C signal, the anode potential reset of electroluminescent cell D, electroluminescent cell D shine；To positioned at same row
(second direction) and each pixel circuit unit 20 for being connected to the circuit for detecting unit positioned at identical group, is successively scanned, with
Carry out storage capacitance C initialization, the write-in of storage capacitance C signal, the anode potential reset of electroluminescent cell D, electroluminescent member
Part D shines；Meanwhile the pixel circuit unit 20 being located in same row (first direction) is successively scanned, with storage capacitance C
Initialization, the write-in of storage capacitance C signal, the anode potential reset of electroluminescent cell D, electroluminescent cell D shine and handle；
That is, when being initialized again to storage capacitance C in pixel circuit unit 20 in the 4th column, to the third for completing storage capacitance C initialization
Storage capacitance C in the pixel circuit unit 20 of column carries out signal write-in, to the secondary series for completing the write-in of storage capacitance C signal
The anode potential of electroluminescent cell D in pixel circuit unit 20 is resetted, to the anode electricity for completing electroluminescent cell D
Electroluminescent cell D in the pixel circuit unit 20 for the first row that position resets carries out luminous.
Referring to Fig. 6, Fig. 6 is the structural schematic diagram of the embodiment of the present application display panel.In this example it is shown that panel
Including substrate 41 and the pixel circuit 42 being set on substrate 41.The pixel circuit 42 can be in above-mentioned any one embodiment
Pixel circuit.
Substrate 41 can may be flexible base board for hard substrate, and the embodiment of the present application does not limit this.
The application includes driving chip and several pixel circuits connecting with driving chip by setting pixel circuit
Unit and several circuit for detecting units, using circuit for detecting unit conducting driving chip with it is electroluminescent in respective pixel circuit unit
The anode of light-emitting component.So as to get the anode potential of electroluminescent cell convenient for driving chip, it is convenient for subsequent display
Compensation of the stage to anode potential, the circuit can be merged preferably with pixel circuit unit, and circuit structure is simple, and the circuit
Structure designs convenient for reconnaissance phase with the display stage independently of each other, so that reconnaissance phase will not have an impact the display stage, and
And it is connected between circuit for detecting unit by connection terminal by that will be located in one group, and drive is correspondingly connected with by the connection terminal
The same pin of dynamic chip, can save the pin on driving chip, convenient for the saving of hardware resource.
The above is only embodiments herein, are not intended to limit the scope of the patents of the application, all to be said using the application
Equivalent structure or equivalent flow shift made by bright book and accompanying drawing content is applied directly or indirectly in other relevant technology necks
Domain similarly includes in the scope of patent protection of the application.
Claims (18)
1. a kind of pixel circuit, which is characterized in that the pixel circuit includes driving chip and connect with the driving chip
Several pixel circuit units and several circuit for detecting units, wherein each circuit for detecting unit is independently
Pixel circuit unit described in corresponding one group to arrange along first direction, and with each picture in pixel circuit unit described in one group
The plain selectively coupled connection of circuit unit, the first direction are line direction or the column side for the pixel circuit unit being arranged in array
To；Wherein,
Each pixel circuit unit includes at least first switch tube and electroluminescent cell, and the one of the first switch tube is logical
Terminal is electrically connected with the anode of the electroluminescent cell, and the control terminal of the first switch tube connects scanning signal end；
Each circuit for detecting unit includes at least selection circuit, and the selection circuit includes at least second switch and connection
First path terminal of switching tube, the second switch is connected wherein by the connection switch pipe with respective pixel circuit unit
Electroluminescent cell anode, the control terminal of the second switch connects the first clock signal end, the second switch
Alternate path end connect the driving chip；
Wherein, when the second switch in the circuit for detecting unit is in the conductive state and the pixel of coupled connection
When first switch tube in circuit unit is also on state, the first switch tube pair of the driving chip detecting on state
The current potential of the anode of electroluminescent cell described in the pixel circuit unit answered；
The circuit for detecting unit that at least two in this second direction are disposed adjacent is one group, described in one group at least
It is connected between two circuit for detecting units being disposed adjacent by connection terminal, and the driving is connected by the connection terminal
The same pin of chip, the second direction is different from first direction, is the column side for the pixel circuit unit being arranged in array
To or line direction.
2. pixel circuit according to claim 1, which is characterized in that each pixel circuit list arranged in a second direction
First switch tube in member is connected to scan signal end.
3. pixel circuit according to claim 1, which is characterized in that
Each circuit for detecting unit further comprises reset circuit, and the reset circuit includes at least third switching tube, institute
State the first path terminal of third switching tube connect by the connection switch pipe with the corresponding pixel circuit unit wherein described in
The control terminal of the anode of electroluminescent cell, the third switching tube connects the second clock signal end, the third switching tube
Alternate path end connects reset signal end.
4. pixel circuit according to claim 3, which is characterized in that
Each pixel circuit unit further comprises storage capacitance and is of coupled connections with the anode of the electroluminescent cell
Current control driving tube, one end of the storage capacitance is selectively of coupled connections with the driving chip, and the other end is selective
It is of coupled connections with the control terminal of the current control driving tube, for receiving and storing the anode voltage compensation from driving chip
Signal, and the current control driving tube according to the anode voltage compensation signal control.
5. pixel circuit according to claim 4, which is characterized in that third switching tube in each circuit for detecting unit
The first path terminal be of coupled connections by the connection switch pipe with the storage capacitance in the corresponding pixel circuit unit,
For carrying out selective reset processing to the storage capacitors.
6. pixel circuit according to claim 4, which is characterized in that the selection circuit further comprises the tenth switch
Pipe, the first path terminal of the tenth switching tube are of coupled connections by the connection switch pipe and one end of the storage capacitance,
Alternate path end is connect with the connection terminal and the driving chip, and control terminal connects the 5th clock signal end.
7. pixel circuit according to claim 4, which is characterized in that each pixel circuit unit further comprises
Four switching tubes, the 5th driving tube, the 6th switching tube, the 7th switching tube, the 8th switching tube and the 9th switching tube, wherein described
5th driving tube is the current control driving tube, and the selection circuit in each circuit for detecting unit further comprises the tenth switch
Pipe；
First path terminal of the 4th switching tube connects the first operating voltage end, and the alternate path end of the 4th switching tube connects
The first path terminal of the 5th driving tube and the alternate path end of the 9th switching tube are connect, the control terminal of the 4th switching tube connects
Connect enable signal end；
The alternate path end of 5th driving tube connect the 6th switching tube the first path terminal and the 7th switching tube
Alternate path end, the control terminal of the 5th driving tube connects the second end of the storage capacitance；
The alternate path end of 6th switching tube connects alternate path end and the electroluminescent member of the first switch tube
The control terminal of the anode of part, the 6th switching tube connects the enable signal end；
First path terminal of the 7th switching tube connects the control terminal of the 5th driving tube, the control of the 7th switching tube
End connection third clock signal end；
First path terminal of the 8th switching tube connects the second end of the storage capacitance, and the second of the 8th switching tube is logical
First path terminal of connection switch pipe described in terminal and the first path terminal of first switch tube T1, the second of the connection switch pipe
Path terminal connects the first path terminal of the second switch and the first path terminal of third switching tube, the 8th switching tube
Control terminal connects the 4th clock signal end；
First path terminal of the 9th switching tube connects the first path terminal of the 5th switching tube, the 9th switching tube
Alternate path end connects the first path terminal of the tenth switching tube, and the alternate path end of the tenth switching tube connects the company
Connecting terminal and the connection driving chip, the control terminal of the 9th switching tube connect third clock signal end, and described the
The control terminal of ten switching tubes connects the 5th clock signal end；
The first end of the storage capacitance connects first operating voltage, and the cathode of the electroluminescent cell connects the second work
Make voltage, the first path terminal of the second switch connects the first path terminal of the first switch tube, the third switch
First path terminal of the first path terminal connection first switch tube of pipe.
8. pixel circuit according to claim 7, which is characterized in that the 7th switching tube and the 8th switching tube are equal
For double grid switching tube structure, the double grid switching tube structure includes the first sub switch pipe and the second sub switch pipe, first son
The grid of switching tube and the second sub switch pipe is connected together as the control terminal of the double grid switching tube structure, and described
First path terminal of first path terminal of one sub switch pipe as the double grid switching tube structure, the of the second sub switch pipe
Alternate path end of two path terminals as the double grid switching tube structure, the alternate path end of the first sub switch pipe and described
First path terminal of the second sub switch pipe connects.
9. a kind of driving method of pixel circuit of any of claims 1-8, which is characterized in that the driving method
Include:
Detect the current potential of the anode of electroluminescent cell in each pixel circuit unit, and by the electricity of the anode of electroluminescent cell
Position is embodied in formation anode voltage thermal compensation signal in driving chip；Wherein, each pixel circuit unit includes at least first
Switching tube and electroluminescent cell；Each circuit for detecting unit includes at least selection circuit, and the selection circuit at least wraps
Include second switch and connection switch pipe；Detect the current potential of the anode of electroluminescent cell in each pixel circuit unit
Step includes: second switch conducting in input the first clock signal control circuit for detecting unit, input scanning signal control pair
Answer in pixel circuit unit first switch tube to be connected, and control the connection switch pipe conducting so that driving chip with it is corresponding
The anode conducting of electroluminescent cell in pixel circuit unit, and then obtain the current potential of the anode of the electroluminescent cell；
The driving chip calls the anode voltage thermal compensation signal and exports the anode voltage thermal compensation signal to corresponding
Pixel circuit unit；
Wherein, in the first clock signal of input control circuit for detecting unit the step of second switch conducting, control is located at same
Second switch in one group in at least two circuit for detecting units being disposed adjacent individually is connected, in different times
Section obtains the current potential of the anode of the electroluminescent cell in respective pixel circuit unit respectively.
10. driving method according to claim 9, which is characterized in that each circuit for detecting unit further comprises
Reset circuit, the reset circuit include at least third switching tube；
The step of detecting the current potential of the anode of electroluminescent cell in each pixel circuit unit further include: corresponded to obtaining
Before the current potential of the anode of electroluminescent cell described in pixel circuit unit, to the current potential of the anode of the electroluminescent cell into
Row initialization process；
Wherein, the step of carrying out initialization process to the current potential of the anode of the electroluminescent cell includes: the second timing of input
Signal controls the third switching tube conducting, and input scanning signal controls the first switch tube conducting, and controls the connection
Switching tube conducting, so that reset signal end is connected with the anode of electroluminescent cell described in respective pixel circuit unit, in turn
The current potential of the anode of the electroluminescent cell is initialized.
11. driving method according to claim 10, which is characterized in that
The anode of electroluminescent cell in detecting one group of pixel circuit unit corresponding with the circuit for detecting unit
During current potential, the second clock signal of input controls the first path terminal of the third switching tube and alternate path supports continuous lead
It is logical.
12. driving method according to claim 9, which is characterized in that each pixel circuit unit further includes storage capacitance
The current control driving tube being of coupled connections with the anode with the electroluminescent cell, the selection of each pixel circuit unit
Circuit further comprises the tenth switching tube,
The driving method includes:
Signal write-in processing is carried out to storage capacitance in each pixel circuit unit；Wherein to being stored in each pixel circuit unit
It includes: in the control circuit for detecting unit at the tenth switching tube and connection switch pipe that capacitor, which carries out the step of signal write-in processing,
In on state, and control the circuit between the storage capacitance in the tenth switching tube and respective pixel circuit unit be in lead
Logical state, so that the driving chip is electrically connected with the storage capacitance in respective pixel circuit unit, and then by the driving core
Piece Anodic voltage compensation signal exports in the storage capacitors into respective pixel circuit unit；And
Electroluminescent cell is driven in each pixel circuit unit to carry out luminous；It wherein drives electroluminescent in each pixel circuit unit
It includes: the electric current discharged in storage capacitance that light-emitting component, which carries out luminous step, is on shape with the storage capacitance with control
The current control driving tube of state is in opening state, so that corresponding electroluminescent cell is in luminance；
Wherein, the circuit controlled between the storage capacitance in the tenth switching tube and respective pixel circuit unit is on shape
In the step of state, controls second switch in corresponding circuit for detecting and be in off state, and control and be located at least two in same group
The tenth switching tube in a circuit for detecting being disposed adjacent individually is connected, with section in different times by the driving chip
Anodic voltage compensation signal exports in the storage capacitors into respective pixel circuit unit.
13. driving method according to claim 12, which is characterized in that storage capacitance in each pixel circuit unit into
It further include being carried out at initialization to the storage capacitance in corresponding pixel circuit unit in advance in the step of row signal write-in processing
The step of reason；The step of carrying out initialization process to the storage capacitance in respective pixel circuit unit includes: the control detecting
Third switching tube and connection switch pipe are in the conductive state in circuit unit, and control the third switching tube and respective pixel electricity
The circuit between storage capacitance in the unit of road is in the conductive state, so that the reset signal end and respective pixel circuit unit
In storage capacitance conducting, and then the storage capacitance is initialized；
It drives electroluminescent cell in each pixel circuit unit to carry out luminous step, further includes in advance to respective pixel circuit
The anode of electroluminescent cell in unit carries out the step of reset processing；To the electroluminescent member in respective pixel circuit unit
It includes: in the control circuit for detecting unit at third switching tube and connection switch pipe that the anode of part, which carries out the step of reset processing,
In on state, and it is in the conductive state to control first switch tube in corresponding pixel circuit unit, so that the reset signal
End is connected with the anode of the electroluminescent cell in respective pixel circuit unit, with the anode potential to corresponding electroluminescent cell
Carry out reset processing current control driving tube.
14. driving method according to claim 13, which is characterized in that each pixel circuit unit further comprises
4th switching tube, the 5th driving tube, the 6th switching tube, the 7th switching tube, the 8th switching tube and the 9th switching tube,
In the step of carrying out signal write-in processing to storage capacitance in each pixel circuit unit,
The step of carrying out initialization process to the storage capacitance in respective pixel circuit unit includes: control the 4th switch
Pipe, the 6th switching tube, the first switch tube, the 7th switching tube and the 9th switching tube cut-off；And control institute
Third switching tube, the connection switch pipe and the 8th switching tube conducting are stated, so that the reset signal is to the storage electricity
Appearance is resetted；
The step of driving chip Anodic voltage compensation signal is exported into the storage capacitors into respective pixel circuit unit
It include: control the 4th switching tube, the 6th switching tube, the first switch tube and the 8th switching tube cut-off；And
The 5th driving tube, the 7th switching tube, the 9th switching tube, the tenth switching tube and connection switch pipe is controlled to lead
It is logical, so that the storage capacitance is written in the anode voltage thermal compensation signal by the driving chip；
Electroluminescent cell in each pixel circuit unit is driven to carry out in luminous step,
The step of carrying out reset processing to the anode of the electroluminescent cell in respective pixel circuit unit includes: control described the
Four switching tubes, the 6th switching tube, the 7th switching tube, the 8th switching tube, the cut-off of the 9th switching tube, and control first and open
Guan Guan, the connection switch pipe and the conducting of third switching tube, so that anode of the reset signal to the electroluminescent cell
Current potential is resetted；
So that it includes: the control first switch tube, the described 7th that corresponding electroluminescent cell, which is in the step of luminance,
Switching tube, the 8th switching tube and the 9th switching tube cut-off, and control the 4th switching tube, the 5th driving tube
It is connected with the 6th switching tube, so that the electroluminescent cell shines.
15. driving method according to claim 9, which is characterized in that each pixel circuit arranged in a second direction
First switch tube in unit shares same scan signal；First in each pixel circuit unit of first direction arrangement
Switching tube is respectively independently connected respective scanned signal；In reconnaissance phase and display stage, along first direction to the pixel circuit
In each pixel circuit unit progressively scanned.
16. driving method according to claim 9, which is characterized in that corresponding to each picture arranged in a second direction
Plain circuit unit, third switching tube shares same second clock signal and same reset signal in the circuit for detecting unit.
17. driving method according to claim 9, which is characterized in that corresponding to each pixel electricity arranged in a second direction
Road unit, the control terminal of second switch is according to electroluminescent cell in respective pixel circuit unit in the circuit for detecting unit
Luminescent color access the first different clock signals.
18. a kind of display panel, which is characterized in that the display panel includes substrate and the pixel circuit that is set on substrate,
The pixel circuit is the pixel circuit as described in claim 1-8 any one.
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| CN201811537144.5A CN109616052A (en) | 2018-12-14 | 2018-12-14 | Display panel, pixel circuit and its driving method |
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| CN110853559A (en) * | 2019-12-26 | 2020-02-28 | 云谷（固安）科技有限公司 | Detection control circuit and detection control method of display panel and display panel |
| CN111028758A (en) * | 2019-12-26 | 2020-04-17 | 云谷（固安）科技有限公司 | Display panel, driving method thereof and display device |
| WO2020119185A1 (en) * | 2018-12-14 | 2020-06-18 | 昆山国显光电有限公司 | Display panel, pixel circuit and driving method therefor |
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