CN106782316A - Drive device and data output method - Google Patents
Drive device and data output method Download PDFInfo
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- CN106782316A CN106782316A CN201710095859.9A CN201710095859A CN106782316A CN 106782316 A CN106782316 A CN 106782316A CN 201710095859 A CN201710095859 A CN 201710095859A CN 106782316 A CN106782316 A CN 106782316A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Abstract
The embodiment of the invention provides a driving device and a data output method, and belongs to the technical field of AMOLED display panels. The driving device is applied to the AMOLED display panel. The drive device includes: the device comprises a logic control module, a delay module and a plurality of groups of driving modules. The input end of each delay module is coupled with the output end of the logic control module, the input end of each group of driving modules is coupled with the output end of each delay module, and each group of driving modules is used for being coupled with an external power supply. The logic control module generates and outputs a plurality of groups of voltage selection data, and the delay module respectively delays and outputs each group of voltage selection data to the corresponding driving module according to different preset delay time lengths, so that the total peak signal is greatly reduced, and the display stability of the AMOLED display panel is effectively improved.
Description
Technical field
The present invention relates to AMOLED technical field of display panel, in particular to a kind of drive device and data output
Method.
Background technology
Continuing to develop and improving, active matrix organic light-emitting diode (AMOLED, Active- with science and technology
Matrix organic light emitting diode) it is widely used in the Display Technique of mobile phone.
In the prior art, if each electric capacity two ends applies different voltages in AMOLED display panels, corresponding to the electric capacity
Organic Light Emitting Diode (Organic Light-Emitting Diode, UIV OLED) display it is just different.Therefore, by not
The magnitude of voltage of each electric capacity two ends loading, just can realize showing picture on AMOLED display panels in disconnected change AMOLED display panels
The change in face.But due to the process for constantly changing into the continuous discharge and recharge of electric capacity of electric capacity two ends on-load voltage, it can constantly be produced
Instantaneous peak current.And multiple electric capacity two ends on-load voltages change in AMOLED display panels, the instantaneous peak of multiple that it is produced
Total instantaneous peak current that value electric current is formed can cause very big on the power supply of the driving chip of AMOLED display panels
Instantaneous pressure drop.The instantaneous pressure drop can influence the precision of voltage needed for AMOLED display panel output displays, cause AMOLED to show
Show that panel occurs that the recognizable aberration of human eye, output voltage be incorrect, the even undesirable condition such as circuit operation irregularity, and then greatly
The exhibit stabilization for reducing AMOLED display panels.
The content of the invention
In view of this, it is an object of the invention to provide a kind of drive device and data output method, it can effectively change
Kind drawbacks described above.
What embodiments of the invention were realized in：
In a first aspect, the embodiment of the invention provides a kind of drive device, AMOLED display panels, the driving are applied to
Device includes：Logic control module, Postponement module and multigroup drive module.The input of the Postponement module and the logic control
The output end coupling of molding block, output end of the input of drive module with the Postponement module is coupled described in every group, every group
The drive module is used to be coupled with external power source.The Logic control module, for generating multigroup voltage selection data, and
Voltage selection data described in every group are exported to the Postponement module.The Postponement module, for the every group of institute that will be got
State voltage selection data to distinguish time delay by different pre-set delay durations and export to the corresponding drive module, to reduce every group
Peak signal of the drive module according to produced by the corresponding voltage selection data is superimposed the total peak signal to be formed.Institute
Drive module is stated, the electric energy of the voltage selection data regulation storage for being obtained according to correspondence.
Second aspect, the embodiment of the invention provides a kind of drive device, and the drive device includes：Logic control mould
Block, Postponement module and multigroup drive module.The input of the Postponement module is coupled with the output end of the Logic control module,
The input of the drive module respectively with the output end and the output end coupling of the Logic control module of the Postponement module
Close, drive module described in every group is used to be coupled with external power source and be grounded, and drive device described in every group is equipped with switch.It is described
Logic control module, for generating multigroup voltage selection data, and voltage selection data described in every group is exported to the drive
Dynamic model block, is additionally operable to generate multigroup switch controlling signal, and switch controlling signal described in every group is exported to the delay mould
Block.The Postponement module, time delay is distinguished for will get switch controlling signal described in every group by different pre-set delay durations
Output is produced with reducing drive module described in every group to the corresponding drive module according to the corresponding voltage selection data
Raw peak signal is superimposed the total peak signal to be formed.The drive device, for the switch control obtained according to correspondence
The electric energy of the voltage selection data regulation storage that signal and correspondence are obtained.
The third aspect, the embodiment of the invention provides a kind of data output method, be applied to the drive device；The drive
Dynamic device includes：Logic control module, Postponement module and multigroup drive module.The input of the Postponement module and the logic
The output end coupling of control module, output end of the input of drive module with the Postponement module is coupled described in every group, often
The group drive module is used to be coupled with external power source.Methods described includes：The Logic control module generates multigroup voltage
Selection data, and voltage selection data described in every group are exported to the Postponement module.The Postponement module will get
Voltage selection data are distinguished time delay and are exported to the corresponding drive module by different pre-set delay durations described in every group, to drop
Peak signal of the drive module described in low every group according to produced by the corresponding voltage selection data is superimposed the total peak value to be formed
Signal.The electric energy of the voltage selection data regulation storage that the drive module is obtained according to correspondence.
Fourth aspect, the embodiment of the invention provides a kind of data output method, be applied to the drive device；The drive
Dynamic device includes：Logic control module, Postponement module and multigroup drive module.The input of the Postponement module and the logic
The output end coupling of control module, the input of the drive module respectively with the output end of the Postponement module and described patrol
The output end coupling of control module is collected, drive module described in every group is used to be coupled with external power source and be grounded, is driven described in every group
Dynamic device is equipped with switch.Methods described includes：The Logic control module generates multigroup voltage selection data, and by every group of institute
State voltage selection data to export to the drive module, also generate multigroup switch controlling signal, and control will be switched described in every group
Signal processed is exported to the Postponement module.The Postponement module will get switch controlling signal described in every group by different pre-
Exported to the corresponding drive module if postponing duration and distinguishing time delay, to reduce drive module described in every group according to corresponding institute
State the peak signal produced by voltage selection data and be superimposed the total peak signal to be formed.The drive device is obtained according to correspondence
The electric energy of the voltage selection data regulation storage that the switch controlling signal and correspondence are obtained.
The beneficial effect of the embodiment of the present invention is：
, by the coupling with the output end of Logic control module, Logic control module can be by life for the input of Postponement module
Multigroup voltage selection data into correspondence drive module quantity are exported to the Postponement module.Every group of input of drive module
Coupled by the output end with Postponement module, every group of voltage that time delay module will can get selection data are by different pre-
Exported to corresponding drive module if postponing duration and distinguishing time delay, so that every group of drive module obtains the voltage choosing matched with itself
The moment that the moment and remaining drive module for selecting data obtain the voltage selection data matched with itself is different.Every group of driving
Module is coupled by with external power source again, and every group of drive module can provide electric energy according in external power source, and correspondence is obtained
The voltage selection data for taking amplify to adjust the electric energy of storage.Every group of drive module electric energy can produce instantaneous peak value to believe when adjusting
Number, but because moment that every group of drive module obtains voltage match with itself selection data obtains and certainly with remaining drive module
The moment of the voltage selection data of body matching is different, therefore every group of drive module produces the moment of instantaneous peak signal mutual
Stagger.And then multiple drive modules produce total peak signal that instantaneous peak signal is formed by stacking to be can be effectively reduced.Therefore, patrol
Volume control module is generated and exports multigroup voltage selection data, and every group of voltage is selected data by different pre- by Postponement module
Exported to corresponding drive module if postponing duration and distinguishing time delay, greatly reduce total peak signal, and effectively increase
The exhibit stabilization of AMOLED display panels.
Other features and advantages of the present invention will illustrate in subsequent specification, also, partly become from specification
It is clear that or being understood by implementing the embodiment of the present invention.The purpose of the present invention and other advantages can be by being write
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.By the way that shown in accompanying drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole
Identical reference indicates identical part in accompanying drawing.Deliberately accompanying drawing, emphasis are not drawn by actual size equal proportion scaling
It is that purport of the invention is shown.
Fig. 1 shows a kind of first structure block diagram of drive device that first embodiment of the invention is provided；
Fig. 2 shows a kind of the second structured flowchart of drive device that first embodiment of the invention is provided；
Fig. 3 shows a kind of the 3rd structured flowchart of drive device that first embodiment of the invention is provided；
Fig. 4 shows the structured flowchart of GTG driver element in a kind of drive device that first embodiment of the invention is provided；
Fig. 5 shows a kind of structured flowchart of drive device that second embodiment of the invention is provided；
Fig. 6 shows the structured flowchart of GTG driver element in a kind of drive device that second embodiment of the invention is provided；；
Fig. 7 shows the analogous diagram for producing total peak signal in the prior art；
Fig. 8 shows the analogous diagram that total peak signal is produced in the embodiment of the present invention；
Fig. 9 shows a kind of flow chart of data output method that first embodiment of the invention is provided；
Figure 10 shows a kind of flow chart of data output method that second embodiment of the invention is provided.
Icon：100- drive devices；110- Logic control modules；120- Postponement modules；121- delay cells；130- drives
Module；131- GTG driver elements；1311- voltages select subelement；1312- drives enhanson；1313- energy storage is single
Unit.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Present invention implementation generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.Additionally, term " the
One ", " second " etc. is only used for distinguishing description, and it is not intended that indicating or implying relative importance.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " connection ",
" coupling " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention
In concrete meaning.
The embodiment provides a kind of drive device for being applied to AMOLED display panels.Drive device is by adding
The Organic Light Emitting Diode of voltage to AMOLED display panels is carried, this of AMOLED display panels has the machine light emitting diode just can
It is enough corresponding to be lighted, wherein, the voltage for being loaded is different, and the glow color of the Organic Light Emitting Diode or brightness are then corresponded to
Change.Therefore, drive device is loaded into each machine light emitting diode magnitude of voltage in AMOLED display panels by constantly change, just
It is capable of achieving the change of display picture on AMOLED display panels.
First embodiment
Fig. 1 is referred to, the first embodiment of the present invention provides a kind of drive device 100, and the drive device 100 includes：
Logic control module 110, Postponement module 120 and multigroup drive module 130.
Logic control module 110 is used for according to pre-set programs or obtains the control instruction of user input and generates corresponding many
Group voltage selection data.The multigroup voltage selection data that will be generated again are exported to Postponement module 120.
Every group of voltage selection data that Postponement module 120 is used to get distinguish time delay by different pre-set delay durations
Export to corresponding drive module 130, to reduce the peak value that every group of drive module 130 selects data to produce according to corresponding voltage
Total peak signal that Signal averaging is formed.Wherein, the inside of Postponement module 120 has multiple delay circuits, each delay circuit
Delay often can be with identical.Postponement module 120 is coupled by the delay circuit of its varying number with every group of drive module 130,
Can then select data by the different duration of the different delay circuit delays of quantity every group of voltage, every group of voltage is selected
Data are distinguished time delay and are exported to corresponding coupled drive module 130 by different pre-set delay durations.
Drive module 130 is used for according to acquisition corresponding voltage selection data, and selects data output correspondence according to the voltage
Voltage, to be stored by exporting corresponding voltage or be discharged electric charge, and then realize the regulation to storing electric energy.Need
Illustrate, drive module 130 is multigroup, and it can be the arbitrary integer more than or equal to 2, and the present embodiment is with four groups of drive modules
Illustrated as a example by 130, quantity during its practical application can not done herein according to depending on being actually needed of AMOLED display panels
It is specific to limit.
Fig. 2 is referred to, Logic control module 110 can be a kind of IC chip with signal handling capacity.On
The Logic control module 110 stated can be general processor, and it can include central processing unit (Central Processing
Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.；Can also be digital signal processor
(DSP), application specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other PLDs, discrete gate
Or transistor logic, discrete hardware components.Can realize or perform disclosed each method in the embodiment of the present invention,
Step and logic diagram.General processor can be microprocessor or the processor can also be any conventional processor
Deng.
Logic control module 110 can be generated corresponding many according to the control instruction of pre-set programs or acquisition user input
Group voltage selection data.Wherein, multiple voltage datas are contained in every group of voltage selection data, the quantity of voltage data can be with
Determined by the resolution ratio of AMOLED display panels.Specifically, when Logic control module 110 can obtain equipment operation, running journey
Sequence produce operating instruction, according to the operating instruction, Logic control module 110 can be generated according to the pre-set programs of itself with
The multigroup voltage selection data of 130 groups of number identicals of drive module.Additionally, Logic control module 110 can also obtain user using
During equipment, the operational order produced by user's operation equipment, according to the operational order, Logic control module 110 also can be according to
The pre-set programs of itself and generate and 130 groups of number identicals of drive module multigroup voltage selection data.Logic control module 110
Output end is coupled by computer data bus (DATE-BUS) with the input of Postponement module 120, the energy of Logic control module 110
It is enough that the multigroup voltage for generating selection data are passed through into DATE-BUS bus output valves Postponement module 120.It should be noted that this
Drive module 130 in embodiment is four groups, then voltage selection data are also four groups.
Postponement module 120 includes multiple delay cells 121, and each delay cell 121 can be RC retardation ratio circuit, i.e., often
Individual delay cell 121 can be the delay circuit being made up of resistance and electric capacity.When voltage selects data by delay cell 121
When, by electric capacity energy storage and release can the carryover effects that be brought, voltage selects the data will be by via the delay cell 121 output
Postpone.Delay cell 121 can be by the resistance value and capacitance in the delay cell 121 to the delay duration of voltage selection data
Determine.As a kind of implementation method, to ensure the carryover effects of delay cell 121, but the aobvious of AMOLED display panels is not influenceed
Show effect, each delay cell 121 by its RC retardation ratio circuit to voltage select data pre-set delay duration be 50 nanoseconds-
200 nanoseconds.As another embodiment, during to make every group of drive module 130 obtain voltage selection data corresponding with itself
Time interval it is identical, to ensure the stability that AMOLED display panels show, the pre-set delay of each delay cell 121 postpones
Often equal and other delay cells 121 are identical.
In the present embodiment, the input of drive module 130 described in every group couples at least one and prolongs by DATE-BUS buses
Slow unit 121 is coupled with the output end of Logic control module 110, and delay cell 121 is single with delay cell 121 and delay
Unit 121 couples with Logic control module 110 also by DATE-BUS buses.Wherein, every group of drive module 130 passes through and logic control
The quantity of the delay cell 121 coupled between molding block 110 is different.So that multiple delays that Postponement module 120 passes through itself
Unit 121, can select data to distinguish time delay by different pre-set delay durations every group of voltage and export to corresponding driving mould
Block 130, so that each drive module 130 obtains moment and remaining drive module 130 of voltage selection data corresponding with itself
It is different.Furthermore, the input of the delay cell 121 coupled with Logic control module 110 is the input of Postponement module 120,
The output end of the delay cell 121 coupled with drive module 130 is the output end of Postponement module 120.It should be understood that this implementation
By taking four groups of drive modules 130 as an example, then in the present embodiment, the quantity of delay cell 121 can be 5 to example in Postponement module 120.
Specifically, the input of drive module 130 described in a group in four groups of drive modules 130 directly with Logic control module 110
Output end is coupled.And in 3 delay cells 121, the input of delay cell 121 and the output end of adjacent delay unit 121 according to
Secondary coupling formed series connection, positioned at cascaded structure one end delay cell 121 input then with the output of Logic control module 110
End coupling, positioned at the cascaded structure other end delay cell 121 output end then with one group of drive in other three groups of drive modules 130
The input coupling of dynamic model block 130.In remaining other 2 delay cell 121, an input for delay cell 121 with patrol
Collect the input coupling of the output end coupling of control module 110, the output end of the delay cell 121 and another delay cell 121
Close, and the output end of another delay cell 121 is then coupled with another group of drive module 130 in other three groups of drive modules 130.
The input of last group of drive module 130 in other three groups of drive modules 130 then with the delay positioned at cascaded structure one end
The output end coupling of unit 121.By above-mentioned coupled modes, so that between four groups of drive modules 130 and Logic control module 110
The quantity of the delay cell 121 for being coupled is respectively：0th, 1,2 and 3.Therefore Postponement module 120 selects data by by four groups of voltages
In one group of voltage selection data exported to corresponding one group of drive module 130, another group of voltage choosing by 0 delay cell 121
Select data and exported to corresponding another group of drive module 130, another group voltage selection data by 1 delay cell 121 and pass through 2
Individual delay cell 121 is exported to corresponding another group of drive module 130, and last group of voltage selection data postpone list by 3
The output of unit 121 is to corresponding last group of drive module 130, so that every group of drive module 130 obtains corresponding voltage selection number
According to moment it is then different with remaining drive module 130.Certainly, in the present embodiment, the quantity and coupled modes of delay cell 121
Only as a kind of implementation method in the present embodiment, other quantity and coupled modes, excessive detailed description is not just done herein, its
The quantity that the delay cell 121 coupled between every group of drive module 130 and Logic control module 110 need to be met is different.
Fig. 3 is referred to, every group of drive module 130 includes multiple GTG driver elements 131, in every group of drive module 130
The quantity of GTG driver element 131 can also be determined by the resolution ratio of AMOLED display panels.Every group of drive module 130 be used to
External power source is coupled, and each the GTG driver element 131 in every group of drive module 130 is also used to be coupled with external power source.With
The input of the GTG driver element 131 in the drive module 130 of the coupling of Logic control module 110 is by coupling
DATE-BUS buses are coupled with Logic control module 110, each GTG in the every group of drive module 130 coupled with delay unit
The input of driver element 131 is coupled also by coupling DATE-BUS buses with corresponding delay cell 121.Every group of driving mould
When block 130 obtains corresponding voltage selection data, the elder generation of each GTG driver element 131 arrangement in every group of drive module 130
Order is identical with the sequencing that each voltage data in voltage selection data is arranged afterwards, then in every group of drive module 130
Each GTG driver element 131 can get voltage data corresponding with itself in voltage selection data.Each GTG
Driver element 131 according to the voltage data selection corresponding voltage of output, being stored by exporting corresponding voltage or
Release electric charge, and then GTG driver element 131 realizes the regulation to storing electric energy.
Fig. 3 and Fig. 4 is referred to, each GTG driver element 131 includes：Multiple voltage selection subelements 1311, multiple
Drive enhanson 1312 and multiple energy storage subelements 1313.
Voltage selection subelement 1311, driving enhanson 1312 are identical with the quantity of energy storage subelement 1313, and electricity
The quantity of pressure selection subelement 1311, driving enhanson 1312 and energy storage subelement 1313 can be by AMOLED display panels
Resolution ratio determine.Specifically, in each GTG driver element 131, the input of each voltage selection subelement 1311 is
The input of GTG driver element 131, the output end of each voltage selection subelement 1311 drives enhanson with each
1312 input coupling, each drives enhanson 1312 to be used to be coupled with external power source and be grounded, and each drives and increases
The output end of hadron unit 1312 is coupled with each energy storage subelement 1313.
In the present embodiment, each voltage data includes multiple voltage values, wherein the quantity of the voltage value and
The sequencing of arrangement selects the quantity of subelement 1311 and the priority of arrangement with the voltage in each GTG driver element 131
It is sequentially identical.Therefore each voltage selection subelement 1311 in GTG driver element 131 can obtain voltage choosing described in every group
Select the voltage value matched with itself in data.As a kind of mode, there are multiple ports in voltage selection subelement 1311, its
The quantity of port can be 1024.Voltage selects subelement 1311 after corresponding voltage value is got, and voltage selection is sub
Unit 1311 can then be selected according to the voltage in multiple ports to should voltage value one of port, therefore the voltage is selected
Subelement 1311 can export the output voltage matched with voltage value by the port for turning on.
Driving enhanson 1312 is used to be amplified the output voltage of acquisition.Specifically, driving enhanson
1312 can be the IC chip with signal amplification.Enhanson 1312 is driven by coupling 6V-7.2V's
External power source, and ground connection forms closed-loop path.Enhanson 1312 is driven after output voltage is got, by external electrical
The incentive action in source, then can amplify the output voltage.Additionally, drive enhanson 1312 again by with energy storage subelement
1313 coupling, drives enhanson 1312 then to export to energy storage subelement 1313 output voltage after amplification.
Energy storage subelement 1313 is used for the electric energy according to the magnitude of voltage regulation storage for obtaining output voltage.Specifically, each
Energy storage subelement 1313 includes：Output resistance R1 and pixel capacitance C1.One end of output resistance R1 and driving enhanson
1312 output end coupling, the other end of output resistance R1 is coupled with one end of pixel capacitance C1, the other end of pixel capacitance C1
Ground connection.Output voltage is by the way that after the partial pressure of output resistance R1, the output voltage after partial pressure can be carried in the two of pixel capacitance C1
End.Pixel capacitance C1 can then carry out storing the storage of electric charge according to the magnitude of voltage of the output voltage and release electric charge releases energy.
Pixel capacitance C1 can then realize the regulation of the electric energy to storage by storing or discharging electric charge.It should be understood that passing through pixel
The storage of electric capacity C1 or release electric charge, the pixel voltage for being carried in pixel capacitance C1 two ends also changes accordingly, and then is loaded into
The pixel voltage value of the machine light emitting diode also changes on AMOLED display panels, thus the display of AMOLED display panels then for
Change.
Pixel voltage can be equivalent to resistance capacitance string by the path that driving enhanson 1312 is sent to pixel capacitance C1
Connection circuit model, the pixel voltage change that pixel capacitance C1 two ends are loaded meets negative exponential function relation, i.e. pixel with the time
The change of the pixel voltage that electric capacity C1 two ends are loaded causes to drive enhanson 1312 between external power source and ground potential
The time of upper super-high-current occurred in the very short time after the pixel voltage change of pixel capacitance C1 two ends, and the high current is
Drive the peak point current of enhanson 1312.The high current is increased over time, first in the linear increase of very big slope to peak
Value, then reduce in negative exponent.Because each GTG driver element 131 obtains the voltage of itself matching in every group of drive module 130
The moment of data is identical with remaining GTG driver element 131 in this group of drive module 130, thus in every group of drive module 130 each
The peak of driving enhanson 1312 for driving enhanson 1312 to be produced because pixel capacitance C1 two ends pixel voltage changes
The moment for being worth electric current is also identical with remaining driving enhanson 1312 in this group of drive module 130.Multiple drives enhancer list
First 1312 peak point currents just form peak value at the moment by each superposition for driving the common external power source of enhanson 1312
Signal, as peak point current.The peak point current is also to increase over time, first in the linear increase of very big slope to peak value,
Reduce in negative exponent again.But every group of drive module 130 obtains the voltage matched with itself and selects the moment of data every with remaining
Group drive module 130 is different due to delay, therefore every group of drive module 130 can be in negative in the peak signal of itself
When index reduces, next group of drive module 130 just starts to produce peak signal.Thus every group of drive module 130 produces peak value letter
Number moment effectively staggered, and then the peak signal that produces of four groups of drive modules 130 is superimposed the total peak signal to be formed and has
What is imitated is reduced, and the exhibit stabilization of AMOLED display panels is also effectively improved.
Second embodiment
Fig. 5 and Fig. 6 is referred to, the second embodiment of the present invention provides a kind of drive device 100, the drive device 100
Also include：Logic control module 110, Postponement module 120 and multigroup drive module 130.Compared to first embodiment, its difference exists
Coupled with Logic control module 110 in the output end of each drive module 130, and every group of drive device 100 is equipped with switch
S。
Logic control module 110 also can generate four groups of voltages according to the control instruction of pre-set programs or acquisition user input
Selection data, and select data to export to corresponding drive module 130 every group of voltage.Additionally, Logic control module 110 is also
According to pre-set programs or control instruction four groups of switch controlling signals of generation of user input can be obtained, and every group of switch is controlled
Signal is exported to Postponement module 120.
Also multiple delay cells 121 are included in Postponement module 120, its coupled modes is identical with first embodiment.Therefore postpone
Module 120 is exported to corresponding by by one group of switch controlling signal in four groups of switch controlling signals by 0 delay cell 121
One group of drive module 130, another group of switch controlling signal is exported to corresponding another group of driving mould by 1 delay cell 121
Block 130, another group switch controlling signal are exported to corresponding another group of drive module 130 by 2 delay cells 121, finally
One group of switch controlling signal is exported to corresponding last group of drive module 130 by 3 delay cells 121, so that every group of drive
The moment that dynamic model block 130 obtains corresponding switch controlling signal is then different with remaining drive module 130.
In every group of each GTG driver element 131 of drive module 130, each of which drive enhanson 1312 and each
Switch S is equipped between energy storage subelement 1313, and switch S is in an initial condition off-state.Every group of drive module 130
By being coupled with Logic control module 110, then every group of drive module 130 can get logic control mould in synchronization
Block 110 sends voltage selection data corresponding with itself.It should be understood that all of voltage selection subelement 1311 can be
Synchronization complete according to for the voltage selection corresponding output voltage of data output, all of driving enhanson 1312
Also corresponding output voltage is amplified and is exported to switch S in synchronization.But due to being disconnection shape under the original state for switching S
State, and then now the pixel voltage at pixel capacitance C1 two ends can't change.
When every group of drive module 130 get with itself for switch controlling signal when, every group of drive module 130
Switch S can be changed into closure state by disconnecting according to the switch controlling signal.And then, each pixel capacitance C1 two ends are loaded
Pixel voltage change cause it is corresponding driving the upper excessive electricity between external power source and ground potential of enhanson 1312
Stream, the high current first in the linear increase of very big slope to peak value, then reduces also with the increase of time in negative exponent.Due to
Each GTG driver element 131 obtains the moment of the switch controlling signal of itself matching and the group is driven in every group of drive module 130
Remaining GTG driver element 131 is identical in dynamic model block 130, therefore each drives enhanson 1312 in every group of drive module 130
Due to pixel capacitance C1 two ends pixel voltage change and produce driving the peak point current of enhanson 1312 moment also with this
Remaining drives enhanson 1312 identical in group drive module 130.Multiple drives the peak point current of enhanson 1312 at this
Moment just also form peak signal by each superposition for driving the common external power source of enhanson 1312.The peak point current
To increase over time, first in the linear increase of very big slope to peak value, then reduce in negative exponent.But every group of drive module
130 obtain the moment of switch controlling signal and remaining every group of drive module 130 that are matched with itself due to delay not
Together, i.e., the moment of the switch closure of every group drive module 130 and remaining every group of drive module 130 due to delay not
Together.Therefore every group of drive module 130 can be when the peak signal of itself be in and reduces in negative exponent, next group of drive module 130
Just start to produce peak signal.Thus every group of drive module 130 produces the moment of peak signal effectively to be staggered, and then four groups
The peak signal that drive module 130 is produced is superimposed the total peak signal to be formed and is effectively reduced, AMOLED display panels it is aobvious
Show that stability is also effectively improved.
Fig. 7 and Fig. 8 is referred to, transverse axis T is the current value of time, longitudinal axis I corresponding to peak signal in figure.Fig. 7 is existing
There is technology to produce the analogous diagram of total peak signal, AM-OLED display panels display tableaux, total peak point current very little.Work as AM-
The picture that OLED display panel shows, due to no carryover effects, can now be superimposed and produce larger total peak in t1 time changings
Value signal.In the case of FHD resolution ratio (1920*1080 pixel), total peak point current is to rise to maximum at A1
I1, I1 can greatly to 180mA.Resolution ratio more and more higher this development trend according to AM-OLED display screens.Differentiated with WQHD
Rate (2560*1440 pixel), pixel output channel quantity increases than FHD on the AM-OLED display panels of WQHD resolution ratio
33%, therefore, total peak point current I1 can greatly to 240mA.Fig. 8 is the emulation of first embodiment of the invention and second embodiment
Figure.When the picture that AM-OLED display panels show is in t1 time changings, first peak signal is produced at the t1 moment, and first
Individual peak signal begins to decline after maximum i1 is risen at a1.First peak signal is in the t2 for starting to reduce by crest i1
When, produce second peak signal.Second peak signal begins to decline after maximum i2 is risen at a2.Second peak value letter
Number by crest i2 start reduce t3 when, produce the 3rd peak signal.3rd peak signal rises to maximum at a3
Begun to decline after value i3.3rd peak signal produces the 4th peak signal when the t4 for reducing is started by crest i3, and
The I2 that peak value is risen at a4 of the 4th peak signal is four peak signals and is superimposed the total peak signal I2 to be formed.Phase
Compared with prior art, in the case of FHD resolution ratio (1920*1080 pixel), total peak point current I2 can as little as 70mA.
And in the case of WQHD resolution ratio (2560*1440 pixel), total peak point current I2 then can as little as 100mA.
Fig. 9 is referred to, the embodiment of the present invention additionally provides a kind of data output method, is applied to first embodiment of the invention
Drive device.The data output method includes：Step S110, step S120 and step S130.
Step S110：The Logic control module generates multigroup voltage selection data, and voltage described in every group is selected into number
According to exporting to the Postponement module.
Step S120：When voltage selects data by different pre-set delays described in the Postponement module will get every group
Time delay respectively long is exported to the corresponding drive module, is selected according to the corresponding voltage with reducing drive module described in every group
Select the peak signal produced by data and be superimposed the total peak signal to be formed.
Step S130：The electric energy of the voltage selection data regulation storage that the drive module is obtained according to correspondence.
Figure 10 is referred to, the embodiment of the present invention additionally provides a kind of data output method, be applied to the present invention second and implement
The drive device of example.The data output method includes：Step S210, step S220 and step S230.
Step S210：The Logic control module generates multigroup voltage selection data, and voltage described in every group is selected into number
According to exporting to the drive module, it is additionally operable to generate multigroup switch controlling signal, and switch controlling signal described in every group is equal
Export to the Postponement module.
Step S220：The Postponement module will get switch controlling signal described in every group by different pre-set delay durations
Time delay respectively is exported to the corresponding drive module, is selected according to the corresponding voltage with reducing drive module described in every group
Peak signal produced by data is superimposed the total peak signal to be formed.
Step S230：The electricity that the switch controlling signal and correspondence that the drive device is obtained according to correspondence are obtained
The electric energy of pressure selection data regulation storage.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the method for foregoing description
Specific work process, may be referred to the corresponding process in aforementioned means, will not be repeated here.
In sum, the embodiment of the present invention provides a kind of drive device and data output method, and the drive device is applied to
AMOLED display panels.Drive device includes：Logic control module, Postponement module and multigroup drive module.Postponement module it is defeated
Enter end to be coupled with the output end of Logic control module, every group of input of drive module is coupled with the output end of Postponement module,
Every group of drive module is used to be coupled with external power source.
, by the coupling with the output end of Logic control module, Logic control module can be by life for the input of Postponement module
Multigroup voltage selection data into correspondence drive module quantity are exported to the Postponement module.Every group of input of drive module
Coupled by the output end with Postponement module, every group of voltage that time delay module will can get selection data are by different pre-
Exported to corresponding drive module if postponing duration and distinguishing time delay, so that every group of drive module obtains the voltage choosing matched with itself
The moment that the moment and remaining drive module for selecting data obtain the voltage selection data matched with itself is different.Every group of driving
Module is coupled by with external power source again, and every group of drive module can provide electric energy according in external power source, and correspondence is obtained
The voltage selection data for taking amplify to adjust the electric energy of storage.Every group of drive module electric energy can produce instantaneous peak value to believe when adjusting
Number, but because moment that every group of drive module obtains voltage match with itself selection data obtains and certainly with remaining drive module
The moment of the voltage selection data of body matching is different, therefore every group of drive module produces the moment of instantaneous peak signal mutual
Stagger.And then multiple drive modules produce total peak signal that instantaneous peak signal is formed by stacking to be can be effectively reduced.Therefore, patrol
Volume control module is generated and exports multigroup voltage selection data, and every group of voltage is selected data by different pre- by Postponement module
Exported to corresponding drive module if postponing duration and distinguishing time delay, greatly reduce total peak signal, and effectively increase
The exhibit stabilization of AMOLED display panels.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of drive device, it is characterised in that be applied to AMOLED display panels, the drive device includes：Logic control
Module, Postponement module and multigroup drive module；The output end coupling of the input of the Postponement module and the Logic control module
Close, output end of the input of drive module with the Postponement module is coupled described in every group, and drive module described in every group is used
Coupled in external power source；
The Logic control module, for generating multigroup voltage selection data, and voltage selection data described in every group is exported
To the Postponement module；
The Postponement module, is prolonged respectively for voltage selection data described in will get every group by different pre-set delay durations
When export to the corresponding drive module, produced according to corresponding voltage selection data with reducing drive module described in every group
Raw peak signal is superimposed the total peak signal to be formed；
The drive module, the electric energy of the voltage selection data regulation storage for being obtained according to correspondence.
2. drive device according to claim 1, it is characterised in that the Postponement module includes：Multiple delay cells；Its
In one group described in the input of drive module coupled with the output end of the Logic control module, remaining multigroup described driving
The input of drive module described in every group in module is by delay cell and the logic control mould described in coupling at least one
The output end coupling of block, wherein, the delay cell coupled between drive module and the Logic control module described in every group
Quantity it is different.
3. drive device according to claim 2, it is characterised in that during the pre-set delay of each delay cell
Length is nanosecond 50 nanosecond -200.
4. drive device according to claim 2, it is characterised in that drive module described in every group includes：Multiple GTGs
Driver element, the input of each the GTG driver element in the drive module coupled with the Logic control module
Output end with the Logic control module is coupled, each in drive module described in every group coupled with the delay unit
The input of the GTG driver element is coupled with the delay cell, GTG driver element described in every group be used to it is described
External power source is coupled；
The GTG driver element, for obtaining the voltage data matched with itself in voltage selection data, and according to
The electric energy of the voltage data regulation storage matched somebody with somebody.
5. drive device according to claim 4, it is characterised in that each described GTG driver element includes：It is multiple
Voltage selection subelement, multiple driving enhansons and multiple energy storage subelements；In GTG driver element described in every group each
The input of the voltage selection subelement is the input of the GTG driver element, each described voltage selection subelement
Output end with each described drive enhanson input couple, each it is described drive enhanson be used to
The external power source is coupled and is grounded, each it is described drive enhanson output end with energy storage subelement coupling each described
Close；
The voltage selects subelement, for obtaining the voltage value matched with itself in voltage selection data described in every group, and
The voltage value according to matching selects the conducting port of itself, is exported and the voltage value with by the port for turning on
The output voltage matched somebody with somebody；
The driving enhanson, the output voltage for that will obtain amplifies, and the output voltage that will amplify is defeated
Go out to the energy storage subelement；
The energy storage subelement, for the electric energy according to the magnitude of voltage regulation storage for obtaining the output voltage.
6. drive device according to claim 5, it is characterised in that each described energy storage subelement includes：Output electricity
Resistance and pixel capacitance, one end of the output resistance couple with the output end of the driving enhanson, the output resistance
The other end coupled with one end of the pixel capacitance, the other end of pixel capacitance ground connection.
7. drive device according to claim 2, it is characterised in that the input of drive module described in a group therein leads to
Cross DATE-BUS buses to be coupled with the output end of the Logic control module, every group of institute in remaining multigroup described drive module
The input for stating drive module couples delay cell and the logic control described at least one by the DATE-BUS buses
The output end coupling of molding block.
8. a kind of drive device, it is characterised in that the drive device includes：Logic control module, Postponement module and multigroup drive
Dynamic model block；The input of the Postponement module is coupled with the output end of the Logic control module, the input of the drive module
End respectively couples with the output end of the Postponement module and the output end of the Logic control module, drive module described in every group
It is used to be coupled with external power source and be grounded, drive device described in every group is equipped with switch；
The Logic control module, for generating multigroup voltage selection data, and voltage selection data described in every group is exported
To the drive module, it is additionally operable to generate multigroup switch controlling signal, and switch controlling signal described in every group is exported to institute
State Postponement module；
The Postponement module, time delay is distinguished for will get switch controlling signal described in every group by different pre-set delay durations
Output is produced with reducing drive module described in every group to the corresponding drive module according to the corresponding voltage selection data
Raw peak signal is superimposed the total peak signal to be formed；
The drive device, the voltage that the switch controlling signal and correspondence for being obtained according to correspondence are obtained selects number
According to the electric energy of regulation storage.
9. a kind of data output method, it is characterised in that be applied to the drive device as described in claim any one of 1-7；Institute
Stating drive device includes：Logic control module, Postponement module and multigroup drive module；The input of the Postponement module with it is described
Logic control module output end coupling, the input of drive module described in every group with the output end coupling of the Postponement module
Close, drive module described in every group is used to be coupled with external power source；Methods described includes：
The Logic control module generates multigroup voltage selection data, and voltage selection data described in every group are exported to described
Postponement module；
Voltage selection data described in the Postponement module will get every group are defeated by different pre-set delay duration difference time delays
Go out to the corresponding drive module, to reduce drive module described in every group according to produced by corresponding voltage selection data
Peak signal be superimposed the total peak signal to be formed；
The electric energy of the voltage selection data regulation storage that the drive module is obtained according to correspondence.
10. a kind of data output method, it is characterised in that be applied to drive device as claimed in claim 8；It is described to drive dress
Put including：Logic control module, Postponement module and multigroup drive module；The input of the Postponement module and the logic control
The output end coupling of module, the input of drive module output end respectively with the Postponement module and the logic control
The output end coupling of molding block, drive module described in every group is used to be coupled with external power source and be grounded, and dress is driven described in every group
Put and be equipped with switch；Methods described includes：
The Logic control module generates multigroup voltage selection data, and voltage selection data described in every group are exported to described
Drive module, also generates multigroup switch controlling signal, and switch controlling signal described in every group is exported to the Postponement module；
The Postponement module will get switch controlling signal described in every group and be exported by different pre-set delay duration difference time delays
To the corresponding drive module, to reduce drive module described in every group according to produced by the corresponding voltage selection data
Peak signal is superimposed the total peak signal to be formed；
The voltage selection data that the switch controlling signal and correspondence that the drive device is obtained according to correspondence are obtained are adjusted
Save the electric energy of storage.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947534A (en) * | 2017-12-01 | 2018-04-20 | 京东方科技集团股份有限公司 | A kind of power IC and its driving method, display device |
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