CN106023895A - Organic light-emitting pixel driving circuit, driving method and organic light-emitting display panel - Google Patents

Organic light-emitting pixel driving circuit, driving method and organic light-emitting display panel Download PDF

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Publication number
CN106023895A
CN106023895A CN201610651408.4A CN201610651408A CN106023895A CN 106023895 A CN106023895 A CN 106023895A CN 201610651408 A CN201610651408 A CN 201610651408A CN 106023895 A CN106023895 A CN 106023895A
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China
Prior art keywords
transistor
signal line
grid
scan signal
pole
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Granted
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CN201610651408.4A
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Chinese (zh)
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CN106023895B (en
Inventor
陈泽源
李玥
钱栋
吴桐
邹文晖
向东旭
朱仁远
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Tianma Microelectronics Co Ltd
Wuhan Tianma Microelectronics Co Ltd
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Tianma Microelectronics Co Ltd
Shanghai Tianma AM OLED Co Ltd
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Priority to CN201610651408.4A priority Critical patent/CN106023895B/en
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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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3266—Details of drivers for scan electrodes

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses an organic light-emitting pixel driving circuit, a driving method and an organic light-emitting display panel. The organic light-emitting pixel driving circuit comprises an encoding unit, a storage unit, a light-emitting control unit, a driving transistor and a light-emitting element; the encoding unit is connected with a data line and transmits signals on the data line to a gird of the driving transistor and an anode of the light-emitting element based on signals of a first scanning signal line and a second scanning signal line; the storage unit is connected with the driving transistor and the light-emitting element and used for storing the signals transmitted to the driving transistor and the light-emitting element; the light-emitting control unit is connected with a light-emitting control signal line and used for controlling the light-emitting element to emit light. A cathode of the light-emitting element is connected with the voltage end of a first power source; the data line is reused as a reference voltage wire and an initialized signal line. According to the scheme, the domain area occupied by the organic light-emitting pixel driving circuit can be saved, and the high-PPI organic light-emitting display panel can be achieved.

Description

Organic light emissive pixels drive circuit, driving method and organic electroluminescence display panel
Technical field
The disclosure relates generally to Display Technique field, particularly relates to a kind of organic light emissive pixels and drives Circuit, driving method and organic electroluminescence display panel.
Background technology
Along with the development of Display Technique, the dimensions of display is maked rapid progress.Such as, In order to meet the portability of electronic equipment, the demand of the display screen that dimensions is less is continuous Increase.
Additionally, along with the development of Display Technique, the display quality of display screen be it is also proposed by user Higher requirement.Such as, user is more likely to like high PPI (Pixels per Inch, every English Very little pixel) display screen, with improve display accuracy and continuity.And OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display, just as possess frivolous, The characteristics such as power saving, are used in various portable electric appts more and more widely.
In OLED display, normally comprise organic LED array (i.e. pel array), And each Organic Light Emitting Diode in array provides the pixel-driving circuit driving electric current.
But, circuit layout shared by the pixel-driving circuit of prior art is bigger, it is impossible to adapt to The demand that OLED display develops towards high PPI direction.
Summary of the invention
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide a kind of organic light emissive pixels Drive circuit, driving method and organic electroluminescence display panel, to solving to deposit in prior art Technical problem.
First aspect, the embodiment of the present application provides a kind of organic light emissive pixels drive circuit, bag Include coding unit, memory element, luminous controling unit, driving transistor and light-emitting component, number According to line, the first scan signal line, the second scan signal line, LED control signal line；Coding is single Unit is connected with data wire, and signal based on the first scan signal line and the second scan signal line will Signal transmission on data wire is to grid and the anode of light-emitting component driving transistor；Storage is single Unit is connected with driving transistor and light-emitting component, is used for storing transmission to driving transistor and luminescence The signal of element；Luminous controling unit is connected with LED control signal line, is used for controlling luminous unit Part is luminous；The negative electrode of light-emitting component and the first power voltage terminal connect；Data wire is multiplexed with reference Pressure-wire and initializing signal line.
Second aspect, the embodiment of the present application additionally provides a kind of the most organic for driving The driving method of light emitting pixel drive circuit, including: during resetting, data wire is as initially Changing holding wire transmission initialization voltage, coding unit is based on the first scan signal line and the second scanning Initialization voltage transmission is extremely driven grid and the sun of light-emitting component of transistor by the signal of holding wire Pole, drives transistor and light-emitting component to complete to initialize；During threshold value is detected, data wire is made Transmitting reference voltage for reference voltage line, coding unit is swept based on the first scan signal line and second Retouch the signal grid by reference voltage transmission to driving transistor of holding wire, and complete driving The threshold value detecting of transistor；At data address period, data line transfer data voltage, coding is single Data voltage is transmitted to driving by unit's signal based on the first scan signal line and the second scan signal line The grid of dynamic transistor, pixel-driving circuit completes data write；During luminescence, coding is single Unit's signal based on the first scan signal line and the second scan signal line cut-off, luminous controling unit Turning on based on LED control signal line, light-emitting component is luminous.
The third aspect, the embodiment of the present application additionally provides a kind of organic electroluminescence display panel, including Multirow pixel cell, often row pixel cell includes that multiple organic light emissive pixels as above drives Circuit.
According to organic light emissive pixels drive circuit and the organic electroluminescence display panel of the application, pass through Data wire is multiplexed with reference voltage line and initializing signal line, saves organic light emissive pixels and drive The chip area on galvanic electricity road, the realization of the organic electroluminescence display panel of the highest PPI.
In the organic electroluminescence display panel of some embodiments of the application, the pixel cell of adjacent lines Between can share scan line come to each pixel-driving circuit provide corresponding signal, can be further Save the chip area of organic light emissive pixels drive circuit.Additionally, the organic light emission picture of the application Element drive circuit and driving method, it is possible to achieve to the driving in organic light emissive pixels drive circuit The valve value compensation of transistor, improves the display homogeneity of organic electroluminescence display panel.
Accompanying drawing explanation
The detailed description that non-limiting example is made made with reference to the following drawings by reading, Other features, purpose and advantage will become more apparent upon:
Fig. 1 shows the schematic of the organic light emissive pixels drive circuit of one embodiment of the application Structure chart；
Fig. 2 shows the signal of the organic light emissive pixels drive circuit of another embodiment of the application Property structure chart；
Fig. 3 is the optional realization of one of the organic light emissive pixels drive circuit of embodiment illustrated in fig. 2 The schematic diagram of mode；
Fig. 4 is the sequential for driving the organic light emissive pixels drive circuit shown in Fig. 2, Fig. 3 Figure；
Fig. 5 shows the signal of the organic light emissive pixels drive circuit of another embodiment of the application Property structure chart；
Fig. 6 is the optional realization of one of the organic light emissive pixels drive circuit of embodiment illustrated in fig. 5 The schematic diagram of mode；
Fig. 7 is the schematic knot of the organic light emissive pixels drive circuit of the application further embodiment Composition；
Fig. 8 is the sequential chart for driving the organic light emissive pixels drive circuit shown in Fig. 7；
Fig. 9 is the driving of the organic light emissive pixels drive circuit for driving each embodiment of the application The indicative flowchart of method；
Figure 10 is the schematic structure of an embodiment of the organic electroluminescence display panel of the application Figure；
Figure 11 is the schematic knot of another embodiment of the organic electroluminescence display panel of the application Composition；
Figure 12 is the first scan signal line that can be applicable to organic electroluminescence display panel shown in Figure 11 The sequential chart of the signal applied on the signal of upper applying and the second scan signal line.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is appreciated that , specific embodiment described herein is used only for explaining related invention, rather than to this Bright restriction.It also should be noted that, for the ease of describe, accompanying drawing illustrate only with The part that invention is relevant.
It should be noted that in the case of not conflicting, the embodiment in the application and embodiment In feature can be mutually combined.Describe this below with reference to the accompanying drawings and in conjunction with the embodiments in detail Application.
Shown in Figure 1, for organic light emissive pixels drive circuit one embodiment of the application Schematic diagram.
The organic light emissive pixels drive circuit of the application include coding unit 110, memory element 120, Luminous controling unit 130, drive transistor 140, light-emitting component 150, data wire D1, the Scan signal line S1, the second scan signal line S2 and LED control signal line E1.
Coding unit 110 is connected with data wire D1, and based on the first scan signal line S1 and Signal on data wire D1 is transmitted to driving transistor 140 by the signal of two scan signal line S2 Grid and the anode of light-emitting component 150.Memory element 120 with drive transistor 140 and Optical element 150 connects, for storing transmission to driving transistor 140 and light-emitting component 150 Signal.Luminous controling unit 130 is connected with LED control signal line E1, is used for controlling luminescence Element 150 is luminous.The negative electrode of light-emitting component 150 and the first power voltage terminal V1 connect.
Additionally, in the present embodiment, data wire D1 is multiplexed with reference voltage line and initializing signal Line.In other words, in the present embodiment, data wire D1 can be not only used for coding unit 110 provide data signal, it is also possible to provide reference voltage signal with initial to coding unit 110 Change signal.
So, the organic light emissive pixels drive circuit of the present embodiment is without arranging extra letter Number line provides reference voltage signal and/or initializing signal to coding unit 110, has saved Chip area shared by machine light emitting pixel drive circuit.On the other hand, answering by data wire D1 With, it is to avoid to provide unlike signal to organic light emissive pixels drive circuit by many signal line Time, interfering between each holding wire.
Shown in Figure 2, for another enforcement of the organic light emissive pixels drive circuit of the application The schematic diagram of example.
Similar with embodiment illustrated in fig. 1, the organic light emissive pixels drive circuit of the present embodiment is same Including coding unit 210, memory element 220, luminous controling unit 230, drive transistor 240, Light-emitting component 250, data wire D1, the first scan signal line S1, the second scan signal line S2 And LED control signal line E1.
Additionally, in Fig. 2, coding unit 210 is connected with data wire D1, and sweep based on first Signal on data wire D1 is transmitted by the signal retouching holding wire S1 and the second scan signal line S2 To the grid and the anode of light-emitting component 250 that drive transistor 240.Memory element 220 with drive Dynamic transistor 240 and light-emitting component 250 connect, and are used for storing transmission to driving transistor 240 Signal with light-emitting component 250.Luminous controling unit 230 is with LED control signal line E1 even Connect, be used for controlling light-emitting component 250 luminous.The negative electrode of light-emitting component 250 and the first power supply electricity Pressure side V1 connects.
Unlike embodiment illustrated in fig. 1, in the present embodiment further to coding unit 210, The structure of memory element 220 and luminous controling unit 230 has carried out specific description.
In the present embodiment, coding unit 210 can include the first transistor T1, transistor seconds The grid of T2, the first transistor T1 and the first scan signal line S1 connect, the first transistor First pole of T1 is connected with the grid driving transistor 240, second pole of the first transistor T1 It is connected with the source electrode driving transistor 240, the grid of transistor seconds T2 and the second scanning letter Number line S2 connects, first pole of transistor seconds T2 is connected with data wire D1, the second crystal Second pole of pipe T2 is connected with the grid driving transistor 240.
Continuing referring to shown in Fig. 2, in the present embodiment, memory element 220 can farther include First electric capacity C1 and the second electric capacity C2, luminous controling unit includes third transistor T3, first First end of electric capacity C1 with drive transistor 240 grid be connected, the second of the first electric capacity C1 The source electrode held and drive transistor 240 is connected, the grid of third transistor T3 and light emitting control Holding wire E1 connects, the first pole of third transistor T3 is connected with second source voltage end V2, Second pole of third transistor T3 is connected with the drain electrode driving transistor 240.Second electric capacity C2 The first end and the first electric capacity C1 second end connect, second end and second of the second electric capacity C2 Power voltage terminal V2 connects.
The organic light emissive pixels drive circuit of the present embodiment, by same holding wire (data wire D1) come to apply data signal, reference voltage signal and/or just to organic light emissive pixels drive circuit Beginningization signal, saves chip area shared by organic light emissive pixels drive circuit.On the other hand, Multiplexing by data wire D1, it is to avoid driven to organic light emissive pixels by many signal line When galvanic electricity road provides unlike signal, interfering between each holding wire.
Shown in Figure 3, for the structure of the optional implementation of another kind of embodiment illustrated in fig. 2 Figure.
Similar with Fig. 2, the organic light emissive pixels drive circuit shown in Fig. 3 includes that coding is single equally Unit 310, memory element 320, luminous controling unit 330, driving transistor 340, luminous unit Part 350, data wire D1, the first scan signal line S1, the second scan signal line S2 and send out Optical control signal line E1.Coding unit 310 is connected with data wire D1, and based on the first scanning Signal on data wire D1 is transmitted extremely by the signal of holding wire S1 and the second scan signal line S2 Drive grid and the anode of light-emitting component 350 of transistor 340.Memory element 320 and driving Transistor 340 and light-emitting component 350 connect, and are used for storing transmission to driving transistor 240 He The signal of light-emitting component 350.Luminous controling unit 330 is connected with LED control signal line E1, Luminous for controlling light-emitting component 350.The negative electrode of light-emitting component 350 and the first power voltage terminal V1 connects.
Additionally, in Fig. 3, coding unit 310 includes that the first transistor T1 and second is brilliant equally Body pipe T2.Wherein, the grid of the first transistor T1 and the first scan signal line S1 connect, the Second pole of one transistor T1 is connected with the source electrode driving transistor 340.Transistor seconds T2 Grid and the second scan signal line S2 connects, first pole of transistor seconds T2 and data wire D1 connects, second pole of transistor seconds T2 is connected with the grid driving transistor 340.
Memory element 320 includes the first electric capacity C1 and the second electric capacity C2, light emitting control list equally Unit includes third transistor T3, first end of the first electric capacity C1 and the grid driving transistor 340 Pole connects, second end of the first electric capacity C1 is connected with the source electrode driving transistor 340, and the 3rd The grid of transistor T3 is connected with LED control signal line E1, the first of third transistor T3 Pole is connected with second source voltage end V2, the second pole of third transistor T3 with drive transistor The drain electrode of 340 connects.Second end of first end of the second electric capacity C2 and the first electric capacity C1 connects, Second end of the second electric capacity C2 is connected with second source voltage end V2.
Unlike Fig. 2, in Fig. 3, first pole of the first transistor T1 and data wire D1 Connect.So, when the first scan signal line being connected with the grid of the first transistor T1 When S1 makes the first transistor T1 turn on, the first of the first transistor extremely can directly receive The signal applied on data wire D1.Further, owing to the first transistor T1 is without by Two-transistor T2 receives the signal of transmission on data wire D1 so that the resistance in whole transmission path Anti-reduction, second pole of the first transistor T1 reaches the current potential of the signal of transmission on data wire D1 Value required time is shorter so that the organic light emissive pixels drive circuit of the present embodiment is being applied to height During the organic electroluminescence display panel of PPI, within the shorter charging interval, the first transistor T1's Second pole reaches to reach intended current potential.
Although it should be noted that in Fig. 2 and embodiment illustrated in fig. 3, the first transistor T1, Transistor seconds T2, third transistor T3 and driving transistor 240,340 are NMOS Transistor, but this is only illustrative.In actual application, can be according to application scenarios Needs the type of transistor is set.Additionally, use in organic light emissive pixels drive circuit Same type of transistor, can make the transistor in this drive circuit simultaneously, thus simplify The manufacturing process of drive circuit.
Below, will be with the first transistor T1, transistor seconds T2, third transistor T3 with drive As a example by dynamic transistor 240,340 is nmos pass transistor, in conjunction with sequential as shown in Figure 4 Figure describes the operation principle of Fig. 2 and embodiment illustrated in fig. 3.
At first stage P1, apply to the first scan signal line S1 and the second scan signal line S2 High level signal, applies low level signal to LED control signal line E1, and to data wire D1 Apply initializing signal Vinit, the first transistor T1 and transistor seconds T2 conducting, so that Grid potential Vg and source potential Vs that must drive transistor 240,340 reach Vinit.
Then, in second stage P2, to the second scan signal line S2 and LED control signal line E1 applies high level signal, applies low level signal to the first scan signal line S1, and to number Reference signal Vref is applied according to line D1, so that transistor seconds T2, third transistor T3 With driving transistor 240,340 conducting, drive grid potential Vg of transistor 240,340 Reach Vref, and drive source potential Vs of transistor 240,340 to reach Vref-| Vth |.? Here, Vth is the threshold voltage driving transistor 240,340.
At phase III P3, apply high level signal to the second scan signal line S2, to first Scan signal line S1, LED control signal line E1 apply low level signal and to data wire D1 Apply data signal Vdata.Now, drive the grid voltage Vg=Vdata of transistor 240,340, The the first electric capacity C1 comprised due to memory element 220,320 again and the coupling of the second electric capacity C2 Cooperation use, the source voltage of driving transistor 240,340 is:
V s = V r e f - | V t h | + c 1 ( V d a t a - V r e f ) c 1 + c 2 + c o l e d - - - ( 1 )
Wherein, c1, c2 are respectively the first electric capacity C1 and the capacitance of the second electric capacity C2, coledFor The capacitance of equivalent capacity Coled of light-emitting component 250,350 self.
In fourth stage P4, apply high level signal and to first to LED control signal line E1 Scan signal line S1, the second scan signal line S2 apply low level signal.Now, is trimorphism Body pipe T3 turns on driving transistor 240,340, and light-emitting component 250,350 is luminous.
From glow current formula, in fourth stage P4, flow through light-emitting component 250,350 Glow current be:
I = k ( V g s - | V t h | ) 2 = k [ V d a t a - V r e f + | V t h | - c 1 ( V d a t a - V r e f ) c 1 + c 2 + c o l e d ( V d a t a - V r e f ) - | V t h | ] 2 - - - ( 2 )
Wherein, Vgs is to drive the voltage difference between transistor 240,340 grid and source electrode；
k = 1 2 μc o x w l ;
μ is the mobility driving transistor 240,340, coxFor driving transistor 240,340 The capacitance of unit are gate oxide capacitance,For driving the breadth length ratio of transistor 240,340.
The above-mentioned formula of abbreviation (2) can obtain, and in fourth stage P4, flows through light-emitting component 250,350 Glow current be:
I = k c 2 + c o l e d c 1 + c 2 + c o l e d ( V d a t a - V r e f ) 2 - - - ( 3 )
From formula (3) it can be seen that glow current I with drive transistor 240,340 threshold Threshold voltage Vth is unrelated.Therefore, at capacitance, the electricity of the second electric capacity C2 of the first electric capacity C1 Capacitance and the capacitance c of light-emitting component 250,350oledTime constant, organic to the present embodiment Light emitting pixel drive circuit applies identical data signal Vdata and reference signal Vref, permissible Obtain identical glow current I, it is to avoid drive the threshold voltage of transistor 240,340 to sending out The impact that photoelectric current I produces.
Although additionally, the light-emitting component 250,350 in organic light emissive pixels drive circuit is respectively provided with One equivalent capacity Coled, but due to its capacitance coledThe least, can from formula (3) Going out, if being not provided with the second electric capacity C2, inputting certain data signal Vdata and reference signal During Vref, the glow current I of generation is the least, driving of organic light emissive pixels drive circuit Kinetic force is more weak.
On the other hand, due to c2>>coled, the organic light emissive pixels drive circuit of the present embodiment with The organic light emissive pixels drive circuit not having the second electric capacity C2 is compared, in the data that offer is identical Under conditions of signal Vdata and reference signal Vref, bigger glow current can be produced, carry The driving force of high organic light emissive pixels drive circuit, reduces power consumption.
Further, when the organic light emissive pixels drive circuit of the present embodiment is applied to organic Time on light display floater, owing to glow current is unrelated with the threshold voltage driving transistor, will not Because driving the threshold value difference of transistor to cause showing that unequal phenomenon occurs.
Shown in Figure 5, for the organic light emissive pixels drive circuit of the application another embodiment Schematic diagram.
Similar with embodiment illustrated in fig. 2, the organic light emissive pixels drive circuit of the present embodiment is same Including coding unit 510, memory element 520, luminous controling unit 530, drive transistor 540, Light-emitting component 550, data wire D1, the first scan signal line S1, the second scan signal line S2 And LED control signal line E1.
Additionally, in Fig. 5, coding unit 510 is connected with data wire D1, and sweep based on first Signal on data wire D1 is transmitted by the signal retouching holding wire S1 and the second scan signal line S2 To the grid and the anode of light-emitting component 550 that drive transistor 540.Memory element 520 with drive Dynamic transistor 540 and light-emitting component 550 connect, and are used for storing transmission to driving transistor 540 Signal with light-emitting component 550.Luminous controling unit 530 is with LED control signal line E1 even Connect, be used for controlling light-emitting component 550 luminous.The negative electrode of light-emitting component 550 and the first power supply electricity Pressure side V1 connects.
Additionally, in the present embodiment, coding unit 510 include equally the first transistor T1, second The grid of transistor T5, the first transistor T1 and the first scan signal line S1 connect, the first crystalline substance First pole of body pipe T1 is connected with the grid driving transistor 540, the of the first transistor T1 Two poles are connected with the source electrode driving transistor 540, and the grid of transistor seconds T2 and second is swept Retouch holding wire S2 connect, first pole of transistor seconds T2 be connected with data wire D1, second Second pole of transistor T2 is connected with the grid driving transistor 540.
In the present embodiment, memory element 520 farther includes the first electric capacity C1 and second equally Electric capacity C2, luminous controling unit includes third transistor T3.First end of the first electric capacity C1 with Drive the second end and the driving transistor 540 of the grid connection of transistor 540, the first electric capacity C1 Source electrode connect, the grid of third transistor T3 is connected with LED control signal line E1, the 3rd First pole of transistor T3 is connected with second source voltage end V2, the of third transistor T3 Two poles are connected with the drain electrode driving transistor 540.
Unlike the embodiments above, in the present embodiment, first end of the second electric capacity C2 with Second end connection, second end of the second electric capacity C2 and first power voltage terminal of the first electric capacity C1 V1 connects.
The organic light emissive pixels drive circuit of the present embodiment, by same holding wire (data wire D1) come to apply data signal, reference voltage signal and/or just to organic light emissive pixels drive circuit Beginningization signal, saves chip area shared by organic light emissive pixels drive circuit.On the other hand, Multiplexing by data wire D1, it is to avoid driven to organic light emissive pixels by many signal line When galvanic electricity road provides unlike signal, interfering between each holding wire.
Shown in Figure 6, for the structure of the optional implementation of another kind of embodiment illustrated in fig. 5 Figure.
Organic light emissive pixels drive circuit shown in Fig. 6 drives electricity with the organic pixel shown in Fig. 5 Differing only in of road, in Fig. 6, first pole of the first transistor T1 is connected with data wire D1. So, make as the first scan signal line S1 being connected with the grid of the first transistor T1 During the first transistor T1 conducting, the first of the first transistor extremely can directly receive data wire The signal of the upper applying of D1.
In application scenes, the organic light emissive pixels drive circuit shown in Fig. 5 and Fig. 6 is same Sample can use the sequential of Fig. 4 to be driven, and when using the sequential of Fig. 4 to be driven, The work process in P1～P4 stage and the organic light emissive pixels drive circuit shown in Fig. 2, Fig. 3 Work process is identical, shown in the glow current finally given formula (3) described above equally.
Therefore, from formula (3) it can be seen that glow current I with drive transistor 540,640 Threshold voltage vt h unrelated.Therefore, at capacitance, the second electric capacity C2 of the first electric capacity C1 Capacitance and the capacitance c of light-emitting component 550,650oledTime constant, to the present embodiment Organic light emissive pixels drive circuit applies identical data signal Vdata and reference signal Vref, Identical glow current I can be obtained, it is to avoid drive the threshold voltage of transistor 540,640 The impact that glow current I is produced.
Further, when the organic light emissive pixels drive circuit of the present embodiment is applied to organic Time on light display floater, owing to glow current is unrelated with the threshold voltage driving transistor, will not Because driving the threshold value difference of transistor to cause showing that unequal phenomenon occurs.
In conjunction with Fig. 2～embodiment illustrated in fig. 3 and Fig. 5～embodiment illustrated in fig. 6 it can be seen that nothing Two ends second end with the first electric capacity C1 respectively of opinion the second electric capacity C2 is connected, the first power supply is electric Pressure side V1 connects, or the two ends of the second electric capacity C2 respectively with second end of the first electric capacity C1 Connect, second source voltage end V2 connects, by formula (3) it can be seen that above-described embodiment The glow current that finally gives of organic light emissive pixels drive circuit all with drive transistor 240, 340, the threshold voltage vt h of 540,640 is unrelated, thus, above-described embodiment all can realize To the valve value compensation driving transistor 240,340,540,640.So, by above-mentioned When the organic light emissive pixels drive circuit of embodiment is applied to organic electroluminescence display panel, Ke Yigen Concrete arrangement situation according to panel adjusts the link position of the second electric capacity C2 so that above-mentioned reality The organic light emissive pixels drive circuit executing example has wider application scope.
Shown in Figure 7, for the organic light emissive pixels drive circuit of the application further embodiment Schematic diagram.
Similar with the various embodiments described above, the organic light emissive pixels drive circuit of the present embodiment wraps equally Include coding unit 710, memory element 720, luminous controling unit 730, drive transistor 740, Light-emitting component 750, data wire D1, the first scan signal line S1, the second scan signal line S2 And LED control signal line E1.
Additionally, in Fig. 7, coding unit 710 is connected with data wire D1, and sweep based on first Signal on data wire D1 is transmitted by the signal retouching holding wire S1 and the second scan signal line S2 To the grid and the anode of light-emitting component 750 that drive transistor 740.Memory element 720 with drive Dynamic transistor 740 and light-emitting component 750 connect, and are used for storing transmission to driving transistor 740 Signal with light-emitting component 750.Luminous controling unit 730 is with LED control signal line E1 even Connect, be used for controlling light-emitting component 750 luminous.The negative electrode of light-emitting component 750 and the first power supply electricity Pressure side V1 connects.
Additionally, in Fig. 7, coding unit 710 includes that the first transistor T1 and second is brilliant equally Body pipe T2.Memory element 720 includes the first electric capacity C1 and the second electric capacity C2, luminous control equally Unit 730 processed includes third transistor T3, first end of the first electric capacity C1 and driving transistor The grid of 740 connects, second end of the first electric capacity C1 is connected with the source electrode driving transistor 740, The grid of third transistor T3 is connected with LED control signal line E1, third transistor T3 First pole is connected with second source voltage end V2, the second pole of third transistor T3 is brilliant with driving The drain electrode of body pipe 740 connects；First end of the second electric capacity C2 and second end of the first electric capacity C1 Connect, second end of the second electric capacity C2 is connected with second source voltage end V2.
Unlike the various embodiments described above, the grid of the first transistor T1 and the second scanning letter Number line S2 connects, first pole of the first transistor T1 is connected with the grid of driving transistor 740, Second pole of the first transistor T1 is connected with the source electrode driving transistor 740.Transistor seconds The grid of T2 and the first scan signal line S1 connection, first pole of transistor seconds T2 and data Line D1 connects, second pole of transistor seconds T2 is connected with the grid driving transistor 740.
Or, in some optional implementations, in the coding unit of the present embodiment, first The grid of transistor and the connection of the second scan signal line, the first pole of the first transistor and data wire Connect, the second pole of the first transistor is connected with the source electrode driving transistor, transistor seconds Grid and the first scan signal line connect, the first pole of transistor seconds is connected with data wire, the Second pole of two-transistor is connected with the grid driving transistor.In other words, by first crystal The first of pipe is extremely directly connected with data wire.
The organic light emissive pixels drive circuit of the present embodiment, by same holding wire (data wire D1) come to apply data signal, reference voltage signal and/or just to organic light emissive pixels drive circuit Beginningization signal, saves chip area shared by organic light emissive pixels drive circuit.On the other hand, Multiplexing by data wire D1, it is to avoid driven to organic light emissive pixels by many signal line When galvanic electricity road provides unlike signal, interfering between each holding wire.
In application scenes, the organic light emissive pixels drive circuit of the present embodiment can use Sequential as shown in Figure 8 is driven.
Below, will be with the first transistor T1, transistor seconds T2, third transistor T3 with drive As a example by dynamic transistor 740 is nmos pass transistor, retouch in conjunction with sequential chart as shown in Figure 8 State the operation principle of embodiment illustrated in fig. 7.
Specifically, at first stage P1, to the first scan signal line S1 and second scanning letter Number line S2 applies high level signal, applies low level signal to LED control signal line E1, and Initializing signal Vinit, the first transistor T1 and transistor seconds T2 is applied to data wire D1 Conducting, so that drive grid potential Vg of transistor 740 and source potential Vs to reach Vinit。
Then, in second stage P2, to the first scan signal line S1 and LED control signal line E1 applies high level signal, applies low level signal to the second scan signal line S2, and to number Reference signal Vref is applied according to line D1, so that transistor seconds T2, third transistor T3 Turn on driving transistor 740, drive grid potential Vg of transistor 740 to reach Vref, And drive source potential Vs of transistor 740 to reach Vref-| Vth |.Here, Vth is for driving The threshold voltage of dynamic transistor 740.
At phase III P3, apply high level signal to the first scan signal line S1, to second Scan signal line S2, LED control signal line E1 apply low level signal and to data wire D1 Apply data signal Vdata.Now, drive the grid voltage Vg=Vdata of transistor 740, The the first electric capacity C1 comprised due to memory element 720 again and the coupling of the second electric capacity C2, The source voltage of driving transistor 740 is:
V s = V r e f - | V t h | + c 1 ( V d a t a - V r e f ) c 1 + c 2 + c o l e d - - - ( 4 )
Wherein, c1, c2 are respectively the first electric capacity C1 and the capacitance of the second electric capacity C2.
In fourth stage P4, apply high level signal and to first to LED control signal line E1 Scan signal line S1, the second scan signal line S2 apply low level signal.Now, is trimorphism Body pipe T3 turns on driving transistor 740, and light-emitting component 750 is luminous.
From glow current formula, in fourth stage P4, flow through the luminescence of light-emitting component 750 Electric current is:
I = k ( V g s - | V t h | ) 2 = k [ V d a t a - V r e f + | V t h | - c 1 ( V d a t a - V r e f ) c 1 + c 2 + c o l e d ( V d a t a - V r e f ) - | V t h | ] 2 - - - ( 5 )
Wherein, Vgs is to drive the voltage difference between transistor 740 grid and source electrode；
k = 1 2 μc o x w l ;
μ is the mobility driving transistor 740, coxFor driving the unit are of transistor 740 The capacitance of gate oxide capacitance,For driving the breadth length ratio of transistor 740.
The above-mentioned formula of abbreviation (2) can obtain, and in fourth stage P4, flows through light-emitting component 750 Glow current is:
I = k c 2 + c o l e d c 1 + c 2 + c o l e d ( V d a t a - V r e f ) 2 - - - ( 6 )
From formula (6) it can be seen that glow current I with drive transistor 740 threshold voltage Vth is unrelated.Therefore, the capacitance of the first electric capacity C1, the capacitance of the second electric capacity C2 with And the capacitance c of light-emitting component 750oledTime constant, drive to the organic light emissive pixels of the present embodiment Galvanic electricity road applies identical data signal Vdata and reference signal Vref, can obtain identical Glow current I, it is to avoid drive the shadow that glow current I is produced by the threshold voltage of transistor 740 Ring.
Additionally, due to c2>>coled, the organic light emissive pixels drive circuit of the present embodiment with do not have The organic light emissive pixels drive circuit of the second electric capacity C2 is compared, in the data signal that offer is identical Under conditions of Vdata and reference signal Vref, can produce bigger glow current, raising has The driving force of machine light emitting pixel drive circuit, reduces power consumption.
Further, when the organic light emissive pixels drive circuit of the present embodiment is applied to organic Time on light display floater, owing to glow current is unrelated with the threshold voltage driving transistor, will not Because driving the threshold value difference of transistor to cause showing that unequal phenomenon occurs.
Additionally, in some optional implementations of the present embodiment, the second electric capacity C2 also may be used To use connected mode as shown in Figure 5 and Figure 6, in other words, can be by the second electric capacity C2 Two ends the second end with the first power voltage terminal V1 and the first electric capacity C1 respectively be connected.
From various embodiments above it can be seen that the organic light emissive pixels drive circuit of the application, nothing Opinion the second electric capacity C2 is connected to the first power voltage terminal V1 and second end of the first electric capacity C1 Between, or be connected between second end of second source voltage end V2 and the first electric capacity C1, The most no matter first pole of the first transistor T1 is connected with the grid of driving transistor, or directly It is connected to data wire D1, timesharing can be realized to organic by the multiplexing of data wire D1 Light pixel drive circuit applies data signal, reference voltage signal and/or initializing signal, thus Save chip area shared by organic light emissive pixels drive circuit.On the other hand, data wire is passed through The multiplexing of D1, it is to avoid to provide not to organic light emissive pixels drive circuit by many signal line During with signal, interfering between each holding wire.
Additionally, use the application organic light emissive pixels drive circuit generate glow current with drive The threshold voltage of dynamic transistor is unrelated, it is to avoid drive the threshold drift of transistor cause application this There is the phenomenon that display is uneven in the display floater of the organic light emissive pixels drive circuit of application.
Additionally, disclosed herein as well is the driving method of a kind of organic light emissive pixels drive circuit, For driving the organic light emissive pixels drive circuit of the various embodiments described above.
Fig. 9 shows that the driving method of the organic light emissive pixels drive circuit of the application is at a frame Indicative flowchart in cycle.
Step 910, during resetting, data wire initializes electricity as the transmission of initializing signal line Pressure, coding unit signal based on the first scan signal line and the second scan signal line will initialize Voltage transmission extremely drives grid and the anode of light-emitting component of transistor, drives transistor and luminescence Element completes to initialize.
Step 920, during threshold value is detected, the transmission of data wire line as the reference voltage is with reference to electricity Pressure, coding unit signal based on the first scan signal line and the second scan signal line will be with reference to electricity Pressure transmission extremely drives the grid of transistor, and completes the threshold value detecting driving transistor.
Step 930, at data address period, data line transfer data voltage, coding unit base Data voltage is transmitted to driving crystalline substance by the signal in the first scan signal line and the second scan signal line The grid of body pipe, pixel-driving circuit completes data write.
Step 940, during luminescence, coding unit is swept based on the first scan signal line and second Retouching the signal cut-off of holding wire, luminous controling unit turns on based on LED control signal line, luminous Element is luminous.
Here, when the driving method of the organic light emissive pixels drive circuit of the present embodiment is applied When organic light emissive pixels drive circuit as shown in Fig. 2, Fig. 3, Fig. 5 or Fig. 6, step 910～the sequential chart of each signal of step 940 may refer to shown in Fig. 4.When by the present embodiment The driving method of organic light emissive pixels drive circuit is applied to organic light emissive pixels as shown in Figure 7 During drive circuit, the sequential chart of each signal of step 910～step 940 may refer to shown in Fig. 8.
Alternatively, in the driving method of the present embodiment, reference voltage can be less than the first power supply The voltage of voltage end output, so, can avoid during threshold value is detected (such as Fig. 4 and Tu During P2 shown in 8), owing to the voltage being applied in emissive element anode is more than being applied to send out The leakage current that voltage on optical element negative electrode produces makes light-emitting component luminous, thus improves application The organic light emissive pixels drive circuit of the driving method of the present embodiment and the dark-state of display floater show Effect.
Shown in Figure 10, for the showing an of embodiment of the organic electroluminescence display panel of the application Meaning property structure chart.
Organic electroluminescence display panel shown in Figure 10 includes multirow pixel cell 1010, often goes picture Element unit 1010 includes the organic light emissive pixels drive circuit of each embodiment of multiple the application.Such as, Often each pixel cell in row pixel cell 1010 all comprises an organic light emissive pixels and drives Galvanic electricity road.
Often row pixel cell connects first scan signal line and second scan signal line. Such as, in application scenes, signal S1～Sm of the first scan signal line and second scanning The signal S1 ' of holding wire～Sm ' can be generated by two shift registers 1020,1030 respectively. In these application scenarios, signal S1～Sm of the first scan signal line can have with in Fig. 4 Waveform identical for S1, and the signal S1 ' of the second scan signal line～Sm ' can have and Fig. 4 In waveform identical for S2.
The organic electroluminescence display panel of the present embodiment, owing to have employed organic light emission as above Pixel-driving circuit so that image element circuit shared chip area in display floater is less, favorably Realization in high PPI display floater.Additionally, due to organic light emissive pixels as above drives Circuit can realize, to the valve value compensation driving transistor, improve the organic light emission of the present embodiment The brightness homogeneity of display floater.
Shown in Figure 11, for the showing of organic electroluminescence display panel of another embodiment of the application Meaning property structure chart.
Similar with the organic electroluminescence display panel shown in Figure 10, the organic light emitting display of the present embodiment Panel includes multirow pixel cell 1110 equally, and often row pixel cell 1110 includes this Shen multiple Please the organic light emissive pixels drive circuit of each embodiment.Such as, often in row pixel cell 1110 Each pixel cell all comprises an organic light emissive pixels drive circuit.Additionally, every row pixel Unit is all connected with first scan signal line and second scan signal line.
Unlike embodiment illustrated in fig. 10, in the present embodiment, with the i-th row pixel cell The second scan signal line connected is multiplexed with the first scan signal line of i+1 row pixel cell, i For positive integer.
Specifically, as shown in figure 11, the second scan signal line S2 multiplexing of the first row pixel It it is the first scan signal line of the second row pixel.So, each organic light emissive pixels drives electricity Scan signal and the second scanning signal needed for road can pass through same shift register 1120 generate, thus further reduce chip area shared by circuit in organic electroluminescence display panel.
Each organic light emissive pixels drive circuit in the organic electroluminescence display panel of the present embodiment is such as Sequential as shown in Figure 8 can be used to be driven.
With the sequential of Figure 12, each scan signal line in adjacent rows pixel cell will be described below Multiplexing relation.
As shown in figure 12, for the exemplary timing diagram of scan signal line in Figure 11.From Figure 12 It can be seen that execute on the driving signal relative scanning holding wire S1 applied on scan signal line S2 One line period of the driving signal delay added, therefore, the driving letter that scan signal line S1 applies Number and the upper driving signal applied of scan signal line S2 can be by the shift register in Figure 11 Adjacent two shifting deposit unit outputs in 1120.Similarly, scan signal line Si+1Upper applying Drive signal relative scanning holding wire SiOne line period of the driving signal delay of upper applying, therefore, Scan signal line Si1The driving signal applied on the driving signal of upper applying and scan signal line Si2 Can be by two shifting deposit unit outputs adjacent in the shift register 1120 in Figure 11.At this In, i1 and i2 is two adjacent natural numbers, and satisfied 0 ＜ i≤m, m is organic light emitting display The line number of the pixel cell of panel.Additionally, drive the first row pixel time period (namely figure The first row time period shown in 12) time, scan signal line S2 is used as in the first row pixel to be respectively arranged with The second scan signal line in machine light emitting pixel drive circuit.And drive the second row pixel time Between section (namely second row time period shown in Figure 12) time, scan signal line S2 be used as second The first scan signal line in each organic light emissive pixels drive circuit in row pixel.Similarly, exist When driving the time period (namely i-th row time period shown in Figure 12) of the i-th row pixel, scanning Holding wire Si+1As the second scanning in organic light emissive pixels drive circuit each in the i-th row pixel Holding wire.And driving time period (namely the i+1 row shown in Figure 12 of i+1 row pixel Time period) time, scan signal line Si+1Drive as each organic light emissive pixels in i+1 row pixel The first scan signal line in galvanic electricity road.
Additionally, it can also be seen that drive the LED control signal line E2 of the second row from Figure 12 The control signal of upper applying can be by driving applying on the LED control signal line E1 of the first row Control signal postpones a line period and obtains.It is likewise possible to infer, drive sending out of the i-th row The control signal applied on optical control signal line Ei can be by the light emitting control letter driving the i-th-1 row The control signal applied on number line postpones a line period and obtains.
Knowable to the sequential shown in Figure 12, for driving each organic light emission picture of i+1 row pixel First scan signal line reusable of element drive circuit does for driving each organic of the i-th row pixel Second scan signal line of light emitting pixel drive circuit, and the glow phase of the i-th row pixel rise Time beginning is identical with the initial time in the P1 stage of i+1 row pixel.Here, i is nature Number, and 0 ＜ i≤m.
It is inferred that when driving the m row pixel cell of the present embodiment, scan signal line The signal of the upper applying of Sm+1 can also be by the signal delay one applied on scan signal line Sm Line period obtains.
If contrast the organic electroluminescence display panel shown in Figure 10 and Figure 11 it is known that Figure 10 and Organic electroluminescence display panel shown in Figure 11 all comprises m row pixel cell, having shown in Figure 10 Machine light emitting display panel need 2m bar scan signal line to drive each row pixel cell, and Figure 11 Shown organic electroluminescence display panel, due to the organic light emissive pixels for driving adjacent lines pixel A wherein scan signal line can be shared between drive circuit, thus only need m+1 bar to scan Holding wire just can drive each row pixel cell, thus the organic light emitting display face of further reducing Chip area shared by circuit in plate.
It will be appreciated by those skilled in the art that invention scope involved in the application, do not limit In the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain simultaneously without departing from In the case of described inventive concept, above-mentioned technical characteristic or its equivalent feature carry out combination in any And other technical scheme formed.Such as features described above and (but not limited to) disclosed herein The technical characteristic with similar functions is replaced mutually and the technical scheme that formed.

Claims (10)

1. an organic light emissive pixels drive circuit, it is characterised in that include coding unit, deposit Storage unit, luminous controling unit, driving transistor and light-emitting component, data wire, the first scanning Holding wire, the second scan signal line, LED control signal line；
Described coding unit is connected with described data wire, and based on described first scan signal line and Signal on described data wire is transmitted and drives crystalline substance to described by the signal of described second scan signal line The grid of body pipe and the anode of described light-emitting component；
Described memory element is connected with described driving transistor and described light-emitting component, is used for storing Transmission is to described driving transistor and the signal of described light-emitting component；
Described luminous controling unit is connected with described LED control signal line, is used for controlling described sending out Optical element is luminous；
The negative electrode of described light-emitting component and the first power voltage terminal connect；
Described data wire is multiplexed with reference voltage line and initializing signal line.
Organic light emissive pixels drive circuit the most according to claim 1, it is characterised in that Described coding unit includes the first transistor, transistor seconds,
The grid of described the first transistor is connected with described first scan signal line, described first crystalline substance First pole of body pipe is connected with the grid of described driving transistor, the second of described the first transistor Pole is connected with the source electrode of described driving transistor, the grid of described transistor seconds and described second Scan signal line connect, the first pole of described transistor seconds be connected with described data wire, described Second pole of transistor seconds is connected with the grid of described driving transistor；Or
The grid of described the first transistor is connected with described first scan signal line, described first crystalline substance First pole of body pipe is connected with described data wire, the second pole of described the first transistor is driven with described The source electrode of dynamic transistor connects, the grid of described transistor seconds and described second scan signal line Connect, the first pole of described transistor seconds is connected with described data wire, described transistor seconds The second pole be connected with the grid of described driving transistor.
Organic light emissive pixels drive circuit the most according to claim 1, it is characterised in that Described coding unit includes the first transistor, transistor seconds, the grid of described the first transistor Be connected with described second scan signal line, the first pole of described the first transistor drives crystalline substance with described Grid connection, the second pole of described the first transistor and the source electrode of described driving transistor of body pipe Connecting, the grid of described transistor seconds is connected with described first scan signal line, described second First pole of transistor is connected with described data wire, the second pole of described transistor seconds is with described The grid driving transistor connects；
Or, the grid of described the first transistor is connected with described second scan signal line, described First pole of the first transistor is connected with described data wire, the second pole of described the first transistor with The source electrode of described driving transistor connects, the grid of described transistor seconds and described first scanning Holding wire connect, the first pole of described transistor seconds be connected with described data wire, described second Second pole of transistor is connected with the grid of described driving transistor.
Organic light emissive pixels drive circuit the most according to claim 1, it is characterised in that Described memory element includes the first electric capacity and the second electric capacity, and described luminous controling unit includes the 3rd Transistor, the first end of described first electric capacity is connected with the grid of described driving transistor, described Second end of the first electric capacity is connected with the source electrode of described driving transistor, described third transistor Grid is connected with described LED control signal line, the first pole of described third transistor is electric with second Source voltage end connects, the second pole of described third transistor connects with the drain electrode of described driving transistor Connect；First end of described second electric capacity is connected with the second end of described first electric capacity, described second Second end of electric capacity is connected with described second source voltage end.
Organic light emissive pixels drive circuit the most according to claim 1, it is characterised in that Described memory element includes the first electric capacity and the second electric capacity, and described luminous controling unit includes the 3rd Transistor, the first end of described first electric capacity is connected with the grid of described driving transistor, described Second end of the first electric capacity is connected with the source electrode of described driving transistor, described third transistor Grid is connected with described LED control signal line, the first pole of described third transistor is electric with second Source voltage end connects, the second pole of described third transistor connects with the drain electrode of described driving transistor Connect；First end of described second electric capacity is connected with the second end of described first electric capacity, described second Second end of electric capacity is connected with described first power voltage terminal.
6. one kind is used for driving driving of organic light emissive pixels drive circuit as claimed in claim 1 Dynamic method, it is characterised in that including:
During resetting, described data wire transmits initialization voltage, institute as initializing signal line Stating coding unit signal based on described first scan signal line and described second scan signal line will The grid of described initialization voltage transmission extremely described driving transistor and the anode of described light-emitting component, Described driving transistor and described light-emitting component complete to initialize；
During threshold value is detected, described data wire line as the reference voltage transmission reference voltage, institute Stating coding unit signal based on described first scan signal line and described second scan signal line will The grid of described reference voltage transmission extremely described driving transistor, and complete described driving The threshold value detecting of transistor；
In data address period, described data line transfer data voltage, described coding unit based on Described data voltage is passed by the signal of described first scan signal line and described second scan signal line Transporting to the grid of described driving transistor, described pixel-driving circuit completes data write；
During luminescence, described coding unit is based on described first scan signal line and described second The signal cut-off of scan signal line, described luminous controling unit is based on described LED control signal line Conducting, described light-emitting component is luminous.
The driving method of organic light emissive pixels drive circuit the most according to claim 6, its Being characterised by, described reference voltage is less than the voltage of described first power voltage terminal output.
8. an organic electroluminescence display panel, including multirow pixel cell, often goes described pixel list Unit includes multiple organic light emissive pixels drive circuit as claimed in claim 1.
Organic electroluminescence display panel the most according to claim 8, it is characterised in that often go Described pixel cell connects described first scan signal line and a described second scanning signal Line.
Organic electroluminescence display panel the most according to claim 9, it is characterised in that with The second scan signal line that i-th row pixel cell connects is multiplexed with the of i+1 row pixel cell Scan signal line, i is positive integer.
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