CN105976764A - Power supply chip and AMOLED driving system - Google Patents
Power supply chip and AMOLED driving system Download PDFInfo
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- CN105976764A CN105976764A CN201610587544.1A CN201610587544A CN105976764A CN 105976764 A CN105976764 A CN 105976764A CN 201610587544 A CN201610587544 A CN 201610587544A CN 105976764 A CN105976764 A CN 105976764A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
-
- 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]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
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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 Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a power supply chip and an AMOLED driving system. The power supply chip comprises a plurality of voltage generation modules and at least one output selection module electrically connected with the plurality of voltage generation modules. The plurality of voltage generation modules can generate a plurality of different power voltages and enable the power voltages to be input to the output selection module; the output selection module can select and output one of the plurality of different power voltages according to input control signals, so that a plurality of different voltage combinations can be output according to combination of the control signals and the output selection module, output voltage switching of a power supply chip can be simplified, and voltage change adjustment range of the power supply chip is enlarged; and when the power supply chip is applied to the AMOLED driving system, the service life of an organic light emitting diode can be prolonged, and threshold voltage excursion of a driving thin film transistor is reduced.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of power supply chip and AMOLED drivetrain
System.
Background technology
Organic Light Emitting Diode (Organic Light Emitting Display, OLED) display device has certainly
Luminous, driving voltage is low, luminous efficiency is high, response time is short, definition is high, nearly 180 ° with contrast
Visual angle, use temperature range width, can realize the plurality of advantages such as Flexible Displays and large area total colouring, quilt
Industry is known as the display device being there is most development potentiality.
OLED display can be divided into passive matrix OLED (Passive Matrix according to type of drive
OLED, PMOLED) and active array type OLED (Active Matrix OLED, AMOLED) two big
Class, i.e. direct addressin and thin film transistor (TFT) (Thin Film Transistor, TFT) matrix addressing two class.Wherein,
AMOLED has the pixel of arrangement in array, belongs to actively display type, and luminous efficacy is high, generally
Large scale display device as fine definition.
AMOLED is current driving apparatus, when there being electric current to flow through Organic Light Emitting Diode, and organic light emission
LED lighting, and luminosity is by the electric current decision flowing through Organic Light Emitting Diode self.Major part is
Some integrated circuits (Integrated Circuit, IC) the most only transmit voltage signal, therefore the picture of AMOLED
Element drive circuit has needed to be changed into voltage signal the task of current signal.
Refer to the schematic diagram that Fig. 1, Fig. 1 are existing a kind of power supply chip for AMOLED, this electricity
First voltage generating module the 100, second voltage generating module 200 it is provided with in source chip (Power IC),
External power source inputs a supply voltage Vin, this supply voltage Vin respectively via the first electricity to this power supply chip
Pressure generation module 100 and the second voltage generating module 200 produce the first output voltage V1 and the second output voltage
Positive one negative (one high and one low) of V2, described first output voltage V1 and the second output voltage V2 mono-, finally will
This first output voltage V1 and the second output voltage V2 is supplied to AMOLED pixel-driving circuit, and driving has
Machine lumination of light emitting diode, carries out image and shows.Above-mentioned power supply chip output voltage regulation inconvenience, can
Tune scope is less, and output voltage determine after can not do sign change.
Summary of the invention
It is an object of the invention to provide a kind of power supply chip, it is possible to the output voltage simplifying power supply chip is cut
Change, increase the change in voltage range of accommodation of power supply chip.
The present invention also aims to provide a kind of AMOLED drive system, this AMOLED drive system
Can the supply voltage of real-time change incoming pixel drive circuit, extend the Organic Light Emitting Diode life-span, reduce
Drive the threshold voltage shift of thin film transistor (TFT).
For achieving the above object, the invention provides a kind of power supply chip, including: multiple voltage generating modules,
And at least one output selection module being all electrically connected with the plurality of voltage generating module；
The plurality of voltage generating module produces multiple different supply voltages and input and output select module, institute
Stating output selects module to select to export in the plurality of different supply voltage according to its control signal accessed
One.
Described output selects module to be multiplexer.
Described voltage generating module and output select the quantity of module to be two, are respectively defined as: the first electricity
Pressure generation module, the second voltage generating module, the first output select module and the second output to select module；
Described first voltage generating module selects module and the second output to select module to carry to described first output
For the first supply voltage, described second voltage generating module selects module and the second output choosing to stating the first output
Selecting module provides second source voltage, described first output to select module to access the first control signal and according to the
One control signal selects output the first supply voltage or second source voltage, described second output to select module to connect
Enter the second control signal and select output the first supply voltage or second source voltage according to the second control signal,
Described first supply voltage is more than second source voltage；
First output selects module and the second output to select the voltage difference that module exports in the same time.
The present invention also provides for a kind of AMOLED drive system, including: the first voltage generating module, second
Voltage generating module, the first output select module, the second output to select module and display floater；
Described first output selects module and the second output to select module all to include: two inputs, a control
End and an outfan；Described first output selects two inputs of module to be electrically connected with the first voltage
Generation module and the second voltage generating module, control to terminate into the first control signal, and outfan is electrically connected with aobvious
Show panel；Described second output select module two inputs be electrically connected with the first voltage generating module with
Second voltage generating module, controls to terminate into the second control signal, and outfan is electrically connected with display floater；
Described first voltage generating module selects module and the second output to select module to carry to described first output
For the first supply voltage, described second voltage generating module selects module and the second output choosing to stating the first output
Selecting module and provide second source voltage, it is defeated that described first output selects module to control it according to the first control signal
Going out end output the first supply voltage or second source voltage, described second output selects module to control according to second
Signal controls its outfan and exports the first supply voltage or second source voltage；
Described first supply voltage is more than second source voltage, and the first output selects module to select with the second output
Module is different at the voltage that the same time exports.
Described display floater includes multiple pixel-driving circuits of array arrangement, and each pixel-driving circuit is equal
Including: the first film transistor, the second thin film transistor (TFT), storage electric capacity and Organic Light Emitting Diode；
The grid of described the first film transistor accesses scanning signal, source electrode incoming data signal, and drain electrode is electrically
Connect primary nodal point；The grid of described second thin film transistor (TFT) is electrically connected with primary nodal point, and source electrode is electrically connected with
Select the outfan of module in the first output, drain electrode is electrically connected at the anode of Organic Light Emitting Diode；Described
One end of storage electric capacity is electrically connected with primary nodal point, and the other end is electrically connected with the first output and selects the output of module
End；The negative electrode of described Organic Light Emitting Diode is electrically connected at described second output and selects the outfan of module.
When described display floater normally shows, described first control signal is high potential, described second control
Signal processed is electronegative potential, and the outfan of described first voltage generating module exports the first supply voltage, described
The outfan output second source voltage of two power supply generation modules, the voltage of described data signal is the first data
Signal voltage；
When described display floater carries out frame blanking, described first control signal is electronegative potential, and described second controls
Signal is high potential, the outfan output second source voltage of described first voltage generating module, described second
The outfan of power supply generation module exports the first supply voltage, and the voltage of described data signal is the second data letter
Number voltage；
Described first supply voltage ＞ the first voltage data signal ＞ second source voltage ＞ the second data signal
Voltage.
Described first output selects module and the second output to select module to be alternative multiplexer.
Also including: time schedule controller, described time schedule controller and the first output select module and the second output choosing
The control end selecting module is electrically connected with, and selects module and the second output to select the control of module to described first output
End processed divides offer the first control signal and the second control signal.
Beneficial effects of the present invention: the invention provides a kind of power supply chip, this power supply chip includes: multiple
Voltage generating module and at least one output selection being all electrically connected with the plurality of voltage generating module
Module, the plurality of voltage generating module can produce multiple different supply voltage and input and output select mould
Block, described output selects module can select to export the plurality of different electricity according to its control signal accessed
In the voltage of source one such that it is able to select the combination of module to export multiple different from output by control signal
Combinations of voltages, it is possible to simplify power supply chip output voltage switching, increase power supply chip change in voltage adjust
Adjusting range.The present invention also provides for a kind of AMOLED drive system, and this AMOLED drive system can be real
The supply voltage of Shi Bianhua incoming pixel drive circuit, extends the Organic Light Emitting Diode life-span, reduces driving thin
The threshold voltage shift of film transistor.
Accompanying drawing explanation
In order to be able to be further understood that inventive feature and technology contents, refer to below in connection with the present invention
Detailed description and accompanying drawing, but accompanying drawing only provide with reference to and explanation use, not be used for the present invention is limited
System.
In accompanying drawing,
Fig. 1 is the schematic diagram of existing a kind of power supply chip for AMOLED；
Fig. 2 is power supply chip and the schematic diagram of AMOLED drive system of the present invention；
Fig. 3 is the schematic diagram of the pixel-driving circuit in the AMOLED drive system of the present invention.
Detailed description of the invention
By further illustrating the technological means and effect thereof that the present invention taked, below in conjunction with the present invention's
Preferred embodiment and accompanying drawing thereof are described in detail.
Refer to Fig. 2, the invention provides a kind of power supply chip, including: multiple voltage generating modules, with
And at least one output selection module being all electrically connected with the plurality of voltage generating module；
The plurality of voltage generating module produces multiple different supply voltages and input and output select module, institute
Stating output selects module to select to export in the plurality of different supply voltage according to its control signal accessed
One.
Specifically, described output selects module to be multiplexer (multiplex, mux), according to design
This output is needed to select module can be alternative multiplexer, four select a multiplexer or 16 choosings
All kinds of multiplexers such as one multiplexer.
Specifically, the supply voltage that the plurality of voltage generating module produces derives from external power source input power
The input voltage vin of chip.
As in figure 2 it is shown, in a preferred embodiment of the invention, described voltage generating module selects mould with output
The quantity of block is two, is respectively defined as: first voltage generating module the 1, second voltage generating module 2,
First output selects module 3 and the second output to select module 4.Wherein, described first voltage generating module
1 selects module 3 and the second output to select module 4 to provide the first supply voltage V1 to described first output, described
Second voltage generating module 2 selects module 3 and the second output to select module 4 to provide the second electricity to stating the first output
Source voltage V2, described first output selects module 3 access the first control signal Sel1 and control letter according to first
Number Sel1 selects output the first supply voltage V1 or second source voltage V2, described second output to select module 4
Access the second control signal Sel2 and according to second control signal Sel2 select output the first supply voltage V1 or
Second source voltage V2, described first supply voltage V1 are more than second source voltage V2.Further, first is defeated
Go out to select module 3 and the second output to select the voltage difference that module 4 exports in the same time.
It is noted that the power supply chip of the present invention is by increasing and institute in multiple voltage generating module rear ends
State the output selection module that multiple voltage generating module is all electrically connected with so that the output voltage of power supply chip can
The control signal selecting module by accessing output is controlled, and power supply chip output voltage modulation scope is wide,
And control mode is simple, and the indoor design of power supply chip is simple, it is easy to accomplish, and can be according to reality
Needs are applied on border, are combined different voltage modules, increase the multiformity of voltage output selection with flexible
Property.
Please continue to refer to Fig. 2, based on above-mentioned power supply chip, the present invention also provides for a kind of AMOLED drivetrain
System, including: first voltage generating module the 1, second voltage generating module the 2, first output selection module 3,
Second output selects module 4 and display floater 5；
Described first output selects module 3 and the second output to select module 4 all to include: two inputs, a control
End processed and an outfan；Described first output selects two inputs of module 3 to be electrically connected with first
Voltage generating module 1 and the second voltage generating module 2, control to terminate into the first control signal Sel1, outfan
It is electrically connected with display floater 5；Described second output selects two inputs of module 4 to be electrically connected with the first electricity
Pressure generation module 1 and the second voltage generating module 2, control to terminate into the second control signal Sel2, outfan electricity
Property connect display floater 5；
Described first voltage generating module 1 selects module 3 and the second output to select module 4 to described first output
Thering is provided the first supply voltage V1, described second voltage generating module 2 selects module 3 and the to stating the first output
Two outputs select module 4 to provide second source voltage V2, described first output to select module 3 according to the first control
Signal Sel1 processed controls its outfan and exports the first supply voltage V1 or second source voltage V2, and described second
Output selects module 4 to control its outfan according to the second control signal Sel2 and exports the first supply voltage V1 or the
Two supply voltage V2；
Described first supply voltage V1 is more than second source voltage V2, and the first output selects module 3 defeated with second
Go out to select the voltage difference that module 4 exports in the same time.
Specifically, described first supply voltage V1 and second source voltage V2 derives from external power source input electricity
The input voltage vin of source chip.
Specifically, described first output selects module 3 and the second output to select module 4 to be alternative multichannel again
Use device.
Further, described AMOLED drive system also includes: time schedule controller (not shown), institute
State time schedule controller and the first output select module 3 and the second output to select the control end of module 4 to be electrically connected with,
Module 3 and the second output is selected to select the control end of module 4 to divide offer the first control letter to described first output
Number Sel1 and the second control signal Sel2.
Preferably, referring to Fig. 3, described display floater 5 includes multiple pixel-driving circuits of array arrangement,
Each pixel-driving circuit all includes: the first film transistor T1, the second thin film transistor (TFT) T2, storage
Electric capacity C1 and Organic Light Emitting Diode D1；
The grid of described the first film transistor T1 accesses scanning signal Scan, source electrode incoming data signal
Data, drain electrode is electrically connected with primary nodal point P；The grid of described second thin film transistor (TFT) T2 is electrically connected with first
Node P, source electrode is electrically connected at the first output and selects the outfan of module 3, drain electrode to be electrically connected at organic
The anode of optical diode D1；One end of described storage electric capacity C1 is electrically connected with primary nodal point P, and the other end is electrical
Connect the first output and select the outfan of module 3；The negative electrode of described Organic Light Emitting Diode D1 is electrically connected at
Described second output selects the outfan of module 4.
During it should be noted that described display floater 5 normally shows, described first control signal Sel1
For high potential, described second control signal Sel2 is electronegative potential, the output of described first voltage generating module 1
End output the first supply voltage V1, the outfan output second source voltage of described second source generation module 2
V2, the voltage of described data signal Data is the first voltage data signal,
When described display floater 5 carries out frame blanking (Blanking), described first control signal Sel1 is low electricity
Position, described second control signal Sel2 is high potential, the outfan output of described first voltage generating module 1
Second source voltage V2, the outfan of described second source generation module 2 exports the first supply voltage V1, institute
The voltage stating data signal Data is the second voltage data signal.
Specifically, described first supply voltage V1 ＞ the first voltage data signal ＞ second source voltage V2 ＞
Second voltage data signal, thus when display floater 5 normally shows, described second thin film transistor (TFT)
T2 opens, Organic Light Emitting Diode D1 normal luminous, when described display floater 5 carries out frame blanking, organic
Light emitting diode D1 and the second thin film transistor (TFT) T2 is in reverse-bias state.
It is noted that so-called frame blanking, it is a frame picture scanning display knot of described display floater 5
Bundle and next frame display picture scanning do not start during this period of time, and now Organic Light Emitting Diode D1 is not
Needing luminescence, if the most still keeping luminance, Organic Light Emitting Diode D1 can be caused
Service life reduction, and in the present invention, during this period of time, Organic Light Emitting Diode D1 cathode voltage is first
Supply voltage V1, anode voltage are the first voltage data signal and the threshold voltage of the second thin film transistor (TFT) T2
Difference, thus described Organic Light Emitting Diode D1 is in reverse bias, and the second thin film transistor (TFT) T2 (drives
Dynamic thin film transistor (TFT)) grid voltage be the second voltage data signal, source voltage is second source voltage
V2, drain voltage is the difference of the threshold voltage of the first voltage data signal and the second thin film transistor (TFT) T2,
Thus described second thin film transistor (TFT) T2 is also at reverse-bias state, namely carry out at described display floater 5
During frame blanking, described Organic Light Emitting Diode D1 and the second thin film transistor (TFT) T2 is in reverse-bias state,
The service life of Organic Light Emitting Diode D1 can be extended by reverse bias, reduce by the second thin film transistor (TFT)
The threshold voltage shift of T2, promotes display effect.
In sum, the invention provides a kind of power supply chip, this power supply chip includes: multiple voltages produce
Module and at least one output selection module being all electrically connected with the plurality of voltage generating module, institute
State multiple voltage generating module and can produce multiple different supply voltage input and output selection module, described
Output selects module can select to export the plurality of different supply voltage according to its control signal accessed
In one such that it is able to by control signal and output select module combination export multiple different voltage
Combination, it is possible to simplify the output voltage switching of power supply chip, increase the change in voltage range of accommodation of power supply chip.
The present invention also provides for a kind of AMOLED drive system, and this AMOLED drive system can real-time change connect
Enter the supply voltage of pixel-driving circuit, extend the Organic Light Emitting Diode life-span, reduce and drive thin film transistor (TFT)
Threshold voltage shift.
The above, for the person of ordinary skill of the art, can be according to the technical side of the present invention
Other various corresponding changes and deformation are made in case and technology design, and all these change and deformation are all answered
Belong to the protection domain of the claims in the present invention.
Claims (8)
1. a power supply chip, it is characterised in that including: multiple voltage generating modules and at least
The individual output being all electrically connected with the plurality of voltage generating module selects module；
The plurality of voltage generating module produces multiple different supply voltages and input and output select module, institute
Stating output selects module to select to export in the plurality of different supply voltage according to its control signal accessed
One.
2. power supply chip as claimed in claim 1, it is characterised in that described output selects module to be multichannel
Multiplexer.
3. power supply chip as claimed in claim 1, it is characterised in that described voltage generating module and output
The quantity selecting module is two, is respectively defined as: the first voltage generating module (1), the second voltage
Generation module (2), the first output select module (3) and the second output to select module (4)；
Described first voltage generating module (1) selects module (3) and the second output choosing to described first output
Select module (4) and the first supply voltage (V1), described second voltage generating module (2) Xiang Shu are provided
One output selects module (3) and the second output to select module (4) to provide second source voltage (V2),
Described first output selects module (3) to access the first control signal (Sel1) and according to the first control signal
(Sel1) output the first supply voltage (V1) or second source voltage (V2) is selected, described second defeated
Go out to select module (4) access the second control signal (Sel2) and select according to the second control signal (Sel2)
Export the first supply voltage (V1) or second source voltage (V2), described first supply voltage (V1)
More than second source voltage (V2)；
First output selects module (3) and the second output to select module (4) to export in same time
Voltage is different.
4. an AMOLED drive system, it is characterised in that including: the first voltage generating module (1),
Second voltage generating module (2), first output select module (3), second output select module (4),
And display floater (5)；
Described first output selects module (3) and the second output to select module (4) to be respectively provided with: two inputs
End, control end and an outfan；Described first output selects two inputs of module (3) respectively
It is electrically connected with the first voltage generating module (1) and the second voltage generating module (2), controls to terminate into first
Control signal (Sel1), outfan is electrically connected with display floater (5)；Described second output selects module
(4) two inputs are electrically connected with the first voltage generating module (1) and the second voltage generating module (2),
Controlling to terminate into the second control signal (Sel2), outfan is electrically connected with display floater (5)；
Described first voltage generating module (1) selects module (3) and the second output choosing to described first output
Select module (4) and the first supply voltage (V1), described second voltage generating module (2) Xiang Shu are provided
One output selects module (3) and the second output to select module (4) to provide second source voltage (V2),
Described first output selects module (3) to control its outfan output the according to the first control signal (Sel1)
One supply voltage (V1) or second source voltage (V2), described second output selects module (4) basis
Second control signal (Sel2) controls its outfan and exports the first supply voltage (V1) or second source voltage
(V2)；
Described first supply voltage (V1) is more than second source voltage (V2), and the first output selects module
(3) different from the voltage that the second output selects module (4) to export in the same time.
5. AMOLED drive system as claimed in claim 4, it is characterised in that described display floater
(5) including multiple pixel-driving circuits of array arrangement, each pixel-driving circuit all includes: first
Thin film transistor (TFT) (T1), the second thin film transistor (TFT) (T2), storage electric capacity (C1) and organic
Optical diode (D1)；
The grid of described the first film transistor (T1) accesses scanning signal (Scan), and source electrode accesses data
Signal (Data), drain electrode is electrically connected with primary nodal point (P)；Described second thin film transistor (TFT) (T2)
Grid is electrically connected with primary nodal point (P), and source electrode is electrically connected at the first output and selects the output of module (3)
End, drain electrode is electrically connected at the anode of Organic Light Emitting Diode (D1)；Described storage electric capacity (C1)
One end is electrically connected with primary nodal point (P), and the other end is electrically connected with the first output and selects the output of module (3)
End；The negative electrode of described Organic Light Emitting Diode (D1) is electrically connected at described second output and selects module (4)
Outfan.
6. AMOLED drive system as claimed in claim 5, it is characterised in that described display floater
(5) when normally showing, described first control signal (Sel1) is high potential, and described second controls
Signal (Sel2) is electronegative potential, and the outfan of described first voltage generating module (1) exports the first power supply
Voltage (V1), outfan output second source voltage (V2) of described second source generation module (2),
The voltage of described data signal (Data) is the first voltage data signal；
When described display floater (5) carries out frame blanking, described first control signal (Sel1) is electronegative potential,
Described second control signal (Sel2) is high potential, the outfan of described first voltage generating module (1)
Output second source voltage (V2), outfan output first electricity of described second source generation module (2)
Source voltage (V1), the voltage of described data signal (Data) is the second voltage data signal；
Described first supply voltage (V1) ＞ the first voltage data signal ＞ second source voltage (V2) ＞
Second voltage data signal.
7. AMOLED drive system as claimed in claim 4, it is characterised in that described first output
Module (3) and the second output is selected to select module (4) to be alternative multiplexer.
8. AMOLED drive system as claimed in claim 4, it is characterised in that also include: sequential
Controller, described time schedule controller and the first output select module (3) and the second output to select module (4)
Control end be electrically connected with, to described first output select module (3) and second output selection module (4)
Control end the first control signal (Sel1) and the second control signal (Sel2) are provided respectively.
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