CN110335562A - Source drive device and driving method, display device - Google Patents
Source drive device and driving method, display device Download PDFInfo
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- CN110335562A CN110335562A CN201910384434.9A CN201910384434A CN110335562A CN 110335562 A CN110335562 A CN 110335562A CN 201910384434 A CN201910384434 A CN 201910384434A CN 110335562 A CN110335562 A CN 110335562A
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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
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Abstract
The disclosure is directed to a kind of source drive device and driving methods, display device, the source drive device includes substrate, the first Source drive, the second Source drive and switching circuit, first Source drive is set to the side of the substrate, exports source electrode driving signal for power source-responsive signal；Second Source drive is set to the substrate backwards to first Source drive, exports source electrode driving signal for responding the power supply signal；Switching circuit selects for power supply signal to be transmitted to the first Source drive or the second Source drive for responding selection control signal.Selection control signal is responded by switching circuit, and power supply signal is transmitted to the first Source drive or the second Source drive, realize that two Source drives for being set to same substrate work alternatively, reduce the calorific value of single Source drive, reduces operating temperature, increase the service life of Source drive.
Description
Technical field
This disclosure relates to which field of display technology, fills in particular to a kind of source drive device and driving method, display
It sets.
Background technique
With the development of technology and progress, the high high-resolution display device of refreshing frequency using more and more extensive, and
And the application of 10bit Source drive is also gradually increasing, these can all increase the calorific value of Source drive, lead to Source drive temperature
Height is spent, the normal work and use service life of Source drive is influenced.
Currently, the heat dissipation for mainly realizing Source drive by attaching cooling fin on Source drive, but cooling fin is scattered
Thermal energy power is limited, has been unable to satisfy the radiating requirements of Source drive, leads to the reduction of Source drive service life.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of source drive device and driving method, display device, and then at least certain journey
Overcome on degree in the related technology Source drive heat-sinking capability it is poor, what Source drive service life caused by operating temperature is high reduced asks
Topic.
According to the disclosure in a first aspect, providing a kind of source drive device, the source drive device includes:
Substrate；
First Source drive exports source electrode driving signal for power source-responsive signal set on the side of the substrate；
Second Source drive, set on the side backwards to first Source drive of the substrate, for responding the electricity
Source signal and export source electrode driving signal；
Switching circuit, for respond select control signal and selecting the power supply signal is transmitted to the first Source drive or
The second Source drive of person.
According to an embodiment of the disclosure, the selection control signal includes first choice control signal and the second selection
Signal is controlled, power supply signal includes the first power supply signal and second source signal, and the switching circuit includes:
First switch sub-circuit is connected for responding the first choice control signal, first power supply is believed
Number it is transmitted to the first power input of first Source drive；
Second switch sub-circuit is connected for responding the first choice control signal, the second source is believed
Number it is transmitted to the second source input terminal of first Source drive；
Third switchs sub-circuit, is connected for responding the second selection control signal, first power supply is believed
Number it is transmitted to the first power input of second Source drive；
4th switch sub-circuit is connected for responding the second selection control signal, the second source is believed
Number it is transmitted to the second source input terminal of second Source drive.
According to an embodiment of the disclosure, the first switch sub-circuit includes the first transistor, the first crystal
The first end of pipe is connected to the first power supply signal end, and the second end of the first transistor is connected to the first of the first Source drive
Power input, the control terminal of the first transistor are connected to first choice control signal end, first power supply signal end
For exporting first power supply signal, the first choice control signal end is for exporting the first choice control signal；
The second switch sub-circuit includes second transistor, and the first end of the second transistor is connected to second source
Signal end, the second end of the second transistor are connected to the second source input terminal of the first Source drive, second crystal
The control terminal of pipe is connected to the first choice control signal end, and the second source signal end is for exporting the second source
Signal；
The third switch sub-circuit includes third transistor, and the first end of the third transistor is connected to the first power supply
Signal end, the second end of the third transistor are connected to the first power input of the second Source drive, the third crystal
The control terminal of pipe is connected to the second selection control signal end, and the second selection control signal end is for exporting second selection
Control signal；
The 4th switch sub-circuit includes the 4th transistor, and the first end of the 4th transistor is connected to second source
Signal end, the second end of the 4th transistor are connected to the second source input terminal of the second Source drive, the 4th crystal
The control terminal of pipe is connected to the second selection control signal end.
According to an embodiment of the disclosure, the source drive device further include:
Sequence controller is connected with the switching circuit, for exporting the selection control signal, the selection control letter
Number include first choice control signal and second selection control signal.
According to an embodiment of the disclosure, the source drive device further include:
Level shifting circuit, the input terminal of the level shifting circuit are connected to the sequence controller, and the level turns
The output end for changing circuit is connected to the switching circuit, and the level shifting circuit is defeated for converting the sequence controller
The level of selection control signal out.
According to an embodiment of the disclosure, the source drive device further include:
Sequence controller is connected with the switching circuit, for exporting the selection control signal, the selection control letter
Number include first choice control signal and second selection control signal.
According to an embodiment of the disclosure, the source drive device further include:
Level shifting circuit, the input terminal of the level shifting circuit are connected to the sequence controller, and the level turns
The output end for changing circuit is connected to the switching circuit, and the selection for converting the sequence controller output controls signal
Level.
According to an embodiment of the disclosure, the substrate includes:
Flip chip, the first Source drive are set to the side of the flip chip, and the second Source drive is set to the flip
The other side of film.
According to an embodiment of the disclosure, first Source drive includes the first common signal input terminal, and described the
Two Source drives include the second common signal input terminal, the first common signal input terminal and second common signal input
End is connected to common signal end.
According to an embodiment of the disclosure, first Source drive projection on the substrate and second source
The projection of driver on the substrate is at least partly overlapped；
The source drive device further include:
Thermal insulation layer is set between the Source drive and the substrate.
According to the second aspect of the disclosure, a kind of source drive device driving method is provided, is used for above-mentioned source drive device, institute
The method of stating includes:
Switching circuit is controlled using selection control signal, power supply signal is transmitted to the first Source drive, the driving of the first source
Device exports source electrode driving signal；
Switching circuit is controlled using selection control signal, power supply signal is transmitted to the second Source drive, the driving of the second source
Device exports source electrode driving signal.
It is described when the switching circuit includes first to fourth switch sub-circuit according to an embodiment of the disclosure
Method further include:
Signal conduction first switch sub-circuit and second switch sub-circuit are controlled using first choice, is controlled using the second selection
Signal shutdown third switch sub-circuit processed and the 4th switch sub-circuit, the first power supply signal and second source signal are transmitted to
First Source drive；
Using first choice control signal shutdown first switch sub-circuit and second switch sub-circuit, controlled using the second selection
Signal conduction third switch sub-circuit processed and the 4th switch sub-circuit, the first power supply signal and second source signal are transmitted to
Second Source drive.
According to the third aspect of the disclosure, a kind of display device is provided, including above-mentioned source drive device.
The source drive device that the disclosure provides responds selection control signal by switching circuit and power supply signal is transmitted to the
One Source drive or the second Source drive realize that two Source drives for being set to same substrate work alternatively, reduce list
The calorific value of a Source drive reduces operating temperature, increases the service life of Source drive.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
Its example embodiment is described in detail by referring to accompanying drawing, the above and other feature and advantage of the disclosure will become
It is more obvious.
Fig. 1 is a kind of schematic block diagram for source drive device that disclosure exemplary embodiment provides；
Fig. 2 is a kind of Source drive distribution schematic diagram that disclosure exemplary embodiment provides；
Fig. 3 is a kind of schematic block diagram for switching circuit that disclosure exemplary embodiment provides；
Fig. 4 is the schematic block diagram for another switching circuit that disclosure exemplary embodiment provides；
Fig. 5 is a kind of switching circuit control sequential figure that disclosure exemplary embodiment provides；
Fig. 6 is a kind of flow chart of the driving method for source drive device that disclosure exemplary embodiment provides；
Fig. 7 is the flow chart of the driving method for another source drive device that disclosure exemplary embodiment provides.
In figure:
100, substrate；200, the first Source drive；300, the second Source drive；400, switching circuit；410, first switch
Sub-circuit；420, second switch sub-circuit；430, third switchs sub-circuit；440, the 4th switch sub-circuit；500, timing control
Device；600, level shifting circuit.
T1, the first transistor；T2, second transistor；T3, third transistor；T4, the 4th transistor.
DVDD, the first power supply signal；AVDD, second source signal；ODD, first choice control signal；EVEN, the second choosing
Select control signal；DVDD ', the first sub- power supply signal；AVDD ', the second sub- power supply signal；ODD_H, high pressure first choice control letter
Number；EVEN_H, the selection control signal of high pressure second.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be real in a variety of forms
It applies, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will be comprehensively and complete
It is whole, and the design of example embodiment is comprehensively communicated to those skilled in the art.Identical appended drawing reference indicates in figure
Same or similar part, thus repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to provide and fully understand to embodiment of the disclosure.However,
It will be appreciated by persons skilled in the art that can be with technical solution of the disclosure without one in the specific detail or more
It is more, or can be using other methods, constituent element, material, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization, material or operation are to avoid fuzzy all aspects of this disclosure.
Block diagram shown in the drawings is only functional entity, not necessarily must be corresponding with physically separate entity.
I.e., it is possible to realize these functional entitys using software form, or these are realized in the unit of one or more softwares hardening
A part of functional entity or functional entity, or realized in heterogeneous networks and/or processor device and/or microcontroller device
These functional entitys.
This illustrative embodiment provides a kind of source drive device first, as depicted in figs. 1 and 2, the source drive device
Including substrate 100, the first Source drive 200, the second Source drive 300 and switching circuit 400, the first Source drive 200 is set to
The side of the substrate 100 exports source electrode driving signal for power source-responsive signal；Second Source drive 300 is set to described
The other side of substrate 100 exports source electrode driving signal for power source-responsive signal；Switching circuit 400 is for responding selection control
Signal processed and select for power supply signal to be transmitted to the first Source drive 200 or the second Source drive.
Wherein, the first Source drive 200 and the second Source drive 300 may include Source drive.First Source drive 200
At work with the second Source drive 300, source electrode driving signal is independently exported, that is to say the first Source drive 200 and the
Two Source drives 300 independently drive display device to work, and the first Source drive 200 and the second Source drive 300 exist
It is worked alternatively under the control of switching circuit 400.The source drive signal may include data-signal.
The source drive device that the embodiment of the present disclosure provides responds selection control signal by switching circuit 400 and believes power supply
It number is transmitted to the first Source drive 200 or the second Source drive 300, realizes that two Source drives for being set to same substrate are handed over
Temporary substitute is made, and the calorific value of single Source drive is reduced, and reduces operating temperature, increases the service life of Source drive.
Each composition circuit devcie of the source drive device provided the embodiment of the present disclosure is described in detail below:
The power supply signal provided in the embodiment of the present disclosure may include the first power supply signal DVDD and second source signal
AVDD, for example, the first power supply signal DVDD can be driver efforts power supply voltage signal, second source signal AVDD can
To be analog power voltage signal.First power supply signal end exports the first power supply signal DVDD, second source signal end output the
Two power supply signal AVDD.First Source drive 200 and the second Source drive 300 can be identical Source drive and be also possible to not
Same Source drive, Source drive may include the first power input and second source input terminal, be respectively used to input driving
Device working power voltage signal and analog power voltage signal.For example, the first power input input driver working power electricity
Signal is pressed, second source input terminal inputs analog power voltage signal.Selection control signal may include first choice control letter
The selection control signal EVEN of number ODD and second, first choice control signal end export first choice and control signal ODD, the second choosing
Select control signal end output the second selection control signal EVEN.
As shown in figure 3, the switching circuit 400 may include: first switch sub-circuit 410, second switch sub-circuit
420, third switch sub-circuit 430 and the 4th switch sub-circuit 440；The first end of first switch sub-circuit 410 is connected to first
Power supply signal end, the second end of first switch sub-circuit 410 are connected to the first power input of the first Source drive 200, the
The control terminal connection first choice of one switch sub-circuit 410 controls signal ODD, and first switch sub-circuit 410 is for responding first
Selection controls signal ODD and is connected, and the first power supply signal DVDD is transmitted to the first power input of the first Source drive 200
End；The first end of second switch sub-circuit 420 is connected to second source signal end, and the second end of second switch sub-circuit 420 connects
It is connected to the second source input terminal of the first Source drive 200, the control terminal connection first choice control of second switch sub-circuit 420
Signal ODD, second switch sub-circuit 420 is used to control signal ODD in response to first choice and be connected, by second source signal
AVDD is transmitted to the second source input terminal of the first Source drive 200；The first end of third switch sub-circuit 430 is connected to first
The second end at power supply signal end, third switch sub-circuit 430 is connected to the first power input of the second Source drive 300, the
Control terminal connection the second selection control signal EVEN of three switch sub-circuits 430, third switch sub-circuit 430 for responding second
Selection controls signal EVEN and is connected, and the first power supply that the first power supply signal DVDD is transmitted to the second Source drive 300 is defeated
Enter end；The first end of 4th switch sub-circuit 440 is connected to second source signal end, the second end of the 4th switch sub-circuit 440
It is connected to 300 second source input terminal of the second Source drive, control terminal connection the second selection control of the 4th switch sub-circuit 440
Signal EVEN, the 4th switch sub-circuit 440 is connected for responding the second selection control signal EVEN, by second source signal
AVDD is transmitted to the second source input terminal of the second Source drive 300.
As shown in figure 4, the first switch sub-circuit 410 includes the first transistor T1, the first end of the first transistor T1
It is connected to the first power supply signal end, the second end of the first transistor T1 is connected to the first power input of the first Source drive 200
End, the control terminal of the first transistor T1 are connected to first choice control signal end；The second switch sub-circuit 420 includes second
Transistor T2, the first end of second transistor T2 are connected to second source signal end, and the second end of second transistor T2 is connected to
The second source input terminal of first Source drive 200, the control terminal of second transistor T2 are connected to first choice control signal end；
The third switch sub-circuit 430 includes third transistor T3, and the first end of third transistor T3 is connected to the first power supply signal
End, the second end of second transistor T2 are connected to the first power input of the second Source drive 300, the control of second transistor T2
End processed is connected to the second selection control signal end；The 4th switch sub-circuit 440 includes the 4th transistor T4, the 4th transistor
The first end of T4 is connected to second source signal end, and the second end of the 4th transistor T4 is connected to the of the second Source drive 300
Two power inputs, the control terminal of the 4th transistor T4 are connected to the second selection control signal end.
It should be noted that the first power supply signal DVDD after switching circuit 400, is being changed into the first sub- power supply signal
DVDD ', the first sub- power supply signal DVDD ' are transferred to the first Source drive 200 or the second Source drive 300.Second electricity
Source signal A VDD after switching circuit 400, is being changed into the second sub- power supply signal AVDD ', the second sub- power supply signal AVDD '
It is transferred to the first Source drive 200 or the second Source drive 300.
Wherein, it can be source electrode, second end can be drain electrode that the control terminal of each transistor, which can be grid, first end,；
Alternatively, it can be drain electrode, second end can be source electrode that the control terminal of each transistor, which can be grid, first end,.In addition, each
Transistor can also be enhancement transistor or depletion mode transistor, this example embodiment is not especially limited this.
First to fourth transistor can be N-type transistor, at this point, first to fourth transistor is high level conducting,
As shown in figure 5, the high level of the first choice selection control of control signal ODD and second signal EVEN can be alternately present, realize
Power supply signal alternately is provided to the first Source drive 200 and the second Source drive 300, the first Source drive 200 and the second source are driven
Dynamic 300 power source-responsive signal of device works alternatively.
It should be understood that all transistors are N-type transistor in above-mentioned specific embodiment；But this field skill
Art personnel are easy the pixel-driving circuit according to provided by the disclosure and obtain the pixel driver that all transistors are P-type transistor
Circuit.In a kind of illustrative embodiments of the disclosure, all transistors can be P-type transistor, at this time first choice
The selection control of control signal ODD and second signal EVEN can be low level.Had using full P-type TFT following excellent
Point: for example strong to noise suppressed power；Such as due to being low level conducting, and low level is easy to accomplish in Charge Management；Such as p-type
Thin film transistor (TFT) processing procedure is simple, and relative price is lower；Such as the stability of P-type TFT is more preferable etc..Certainly, the disclosure
Provided switching circuit is also readily modified as CMOS (Complementary Metal Oxide Semiconductor, complementary gold
Belong to oxide semiconductor) circuit etc., it is not limited to pixel-driving circuit provided in the present embodiment, which is not described herein again.
The substrate 100 includes that can be set to described with flip chip (COF, chip on film), the first Source drive 200
The side of flip chip, the second Source drive 300 are set to the other side of the flip chip.First Source drive 200 and second
Projection of the Source drive 300 in flip chip can be overlapped or not be overlapped.When first Source drive 200 is in the base
Projection and second Source drive 300 on plate 100 is when the projection on the substrate 100 is at least partly overlapped, the source
Driving device can also include thermal insulation layer, and thermal insulation layer is set between the Source drive and the substrate 100.
Wherein, thermal insulation layer can be set between the first Source drive 200 and substrate 100 or thermal insulation layer can be set to the
Between two Source drives 300 and substrate 100, or in substrate 100 and the first Source drive 200 and the second Source drive 300
Between be respectively provided with thermal insulation layer, that is to say that 100 two sides of substrate are respectively provided with thermal insulation layer.The material of thermal insulation layer may include glass fibre,
The one or more of asbestos, rock wool, silicate, gel felt, evacuated panel, aluminium foil or thermal insulating paper etc..
First Source drive 200 may include the first common signal input terminal, and the second Source drive 300 may include second
Common signal input terminal, the first common signal input terminal and the second common signal input terminal are connected to common signal end
COM.Wherein, for common signal end COM for exporting common signal, common signal may include gamma adjusting signal and differential signal
Deng.
Further, as shown in Figure 1, the source drive device can also include sequence controller 500 and level conversion electricity
Road 600；The output end of sequence controller 500 is connected with the input terminal of the level shifting circuit 600, and sequence controller 500 is used
Signal is controlled in exporting the selection, the selection control signal includes the first choice selection control of control signal ODD and second
Signal EVEN.The output end of level shifting circuit 600 is connected to the control terminal of the switching circuit 400, level conversion electricity
Road 600 is used to convert the level for the selection control signal that the sequence controller 500 exports.
Wherein, sequence controller 500 exports the first choice selection control signal EVEN of control signal ODD and second, one
In a period first choice control signal ODD and second selection control signal EVEN be arranged alternately, such as in one cycle before
Half time sequence controller 500 exports first choice and controls signal ODD, in rear half time sequence controller
500 output the second selection control signal EVEN.Certainly, in practical applications, sequence controller 500 exports first choice control letter
The selection control of number ODD and second signal EVEN is also possible to anisochrouous, and the embodiment of the present disclosure is not specifically limited in this embodiment.Selection
The period of control signal can be written and be modified by sequence controller 500.
The level that level shifting circuit 600 is used to adjust the signal of the output of sequence controller 500 is adjusted, for example, rising
The voltage of high 500 output signal of sequence controller, level shifting circuit can export high pressure first choice control signal at this time
The ODD_H and selection control of high pressure second signal EVEN_H.Certainly in practical applications, level shifting circuit can be used for reducing
The voltage for the signal that the voltage or inversion timing controller 500 for the signal that sequence controller 500 exports export, the disclosure are implemented
Example is not specifically limited in this embodiment.
Further, heat dissipation patch can be set on the first Source drive 200 and the second Source drive 300, on the one hand passes through
First Source drive 200 and the second Source drive 300 work alternatively the temperature for reducing Source drive, on the other hand pass through heat dissipation patch
Accelerate heat dissipation, the temperature of Source drive can be effectively reduced, extend the operating temperature of Source drive.
The source drive device that the embodiment of the present disclosure provides responds selection control signal by switching circuit 400 and believes power supply
It number is transmitted to the first Source drive 200 or the second Source drive 300, realizes that two Source drives for being set to same substrate are handed over
Temporary substitute is made, and the calorific value of single Source drive is reduced, and reduces operating temperature, increases the service life of Source drive.
It should be noted that although being referred to several modules or circuit of source drive device in the above detailed description,
This division is not enforceable.In fact, according to embodiment of the present disclosure, two or more above-described modules or
The feature and function of circuit can embody in a module or circuit.Conversely, an above-described module or electricity
The feature and function on road can be to be embodied by multiple modules or circuit with further division.
Disclosure illustrative embodiments also provide a kind of driving method of source drive device, for above-mentioned source driving dress
It sets, as shown in fig. 6, the driving method of the source drive device includes the following steps:
Step S610 controls switching circuit 400 using selection control signal, power supply signal is transmitted to the first Source drive
200, the first Source drive 200 exports source electrode driving signal；
Step S620 controls switching circuit 400 using selection control signal, power supply signal is transmitted to the second Source drive
300, the second Source drive 300 exports source electrode driving signal.
It can be that the first Source drive 200 is first powered or the second Source drive 300 is first powered, the disclosure in the course of work
Embodiment does not limit the job order of the first Source drive 200 and the second Source drive 300, it is only necessary to realize that the first source is driven
Dynamic device 200 and the second Source drive 300 work alternatively.For example, under the driving of clock signal as shown in Figure 5, first
Source drive 200 works, and then the second Source drive 300 works.
The driving method for the source drive device that the embodiment of the present disclosure provides responds selection control letter by switching circuit 400
Number power supply signal is transmitted to the first Source drive 200 or the second Source drive 300, realizes two for being set to same substrate
Source drive works alternatively, and reduces the calorific value of single Source drive, reduces operating temperature, increases the use of Source drive
Service life.
When the switching circuit 400 includes first to fourth switch sub-circuit, as shown in Figure 7, which comprises step
Rapid S710 utilizes the using first choice control signal ODD conducting first switch sub-circuit 410 and second switch sub-circuit 420
Two selection control signal EVEN shutdown third switch sub-circuits 430 and the 4th switch sub-circuit 440, by the first power supply signal
DVDD and second source signal AVDD are transmitted to the first Source drive 200.
Exemplary, first to fourth switch sub-circuit respectively includes first to fourth transistor, first to fourth transistor
Can be N-type transistor, in the t1 period, first choice control signal ODD be high level, second select control signal EVEN for
Low level.The first transistor T1 and second transistor T2 receives high level signal conducting, third transistor T3 and the 4th transistor
The shutdown of T4 grid low level signal.First power supply signal DVDD and second source signal AVDD are transferred to the first Source drive
200,200 outputting data signals of the first Source drive to pixel circuit, driving display device shows picture.
Step S720 utilizes first choice control signal ODD shutdown first switch sub-circuit 410 and second switch sub-circuit
420, using the second selection control signal EVEN conducting third switch sub-circuit 430 and the 4th switch sub-circuit 440, by first
Power supply signal DVDD and second source signal AVDD are transmitted to the second Source drive 300.
Exemplary, first to fourth switch sub-circuit respectively includes first to fourth transistor, first to fourth transistor
Can be N-type transistor, in the t2 period, first choice control signal ODD be low level, second select control signal EVEN for
High level.The first transistor T1 and second transistor T2 receives low level signal shutdown, third transistor T3 and the 4th transistor
The conducting of T4 grid high level signal.First power supply signal DVDD and second source signal AVDD are transferred to the second Source drive
300,300 outputting data signals of the second Source drive to pixel circuit, driving display device shows picture.
It should be noted that although describing each step of method in the disclosure in the accompanying drawings with particular order,
This does not require that or implies must execute these steps in this particular order, or have to carry out step shown in whole
Just it is able to achieve desired result.Additional or alternative, it is convenient to omit multiple steps are merged into a step and held by certain steps
Row, and/or a step is decomposed into execution of multiple steps etc..
Disclosure illustrative embodiments also provide a kind of display device, which includes above-mentioned source driving dress
It sets.The display device can also include the components such as pixel circuit, gate driving circuit and luminescence unit, because it is existing
The technology embodiment of the present disclosure does not repeat again herein.Wherein, the display device for example may include mobile phone, tablet computer, TV
Any products or components having a display function such as machine, laptop, Digital Frame, navigator.
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can also be realized by hardware realization by way of the necessary software of combination of hardware.Therefore, according to the disclosure
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server, mobile terminal or network equipment etc.) is executed according to disclosure embodiment
Method.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
His embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Adaptive change follow the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure or
Conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by claim
It points out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the attached claims.
Claims (11)
1. a kind of source drive device, which is characterized in that the source drive device includes:
Substrate；
First Source drive exports source electrode driving signal for power source-responsive signal set on the side of the substrate；
Second Source drive, set on the side backwards to first Source drive of the substrate, for responding the power supply letter
Number and export source electrode driving signal；
Switching circuit selects control signal and selecting that the power supply signal is transmitted to the first Source drive or for responding
Two Source drives.
2. source drive device as described in claim 1, which is characterized in that the selection control signal includes first choice control
Signal and the second selection control signal, power supply signal includes the first power supply signal and second source signal, the switching circuit packet
It includes:
First switch sub-circuit is connected for responding the first choice control signal, first power supply signal is passed
Transport to the first power input of first Source drive；
Second switch sub-circuit is connected for responding the first choice control signal, the second source signal is passed
Transport to the second source input terminal of first Source drive；
Third switchs sub-circuit, is connected for responding the second selection control signal, first power supply signal is passed
Transport to the first power input of second Source drive；
4th switch sub-circuit is connected for responding the second selection control signal, the second source signal is passed
Transport to the second source input terminal of second Source drive.
3. source drive device as claimed in claim 2, which is characterized in that the first switch sub-circuit includes first crystal
Pipe, the first end of the first transistor are connected to the first power supply signal end, and the second end of the first transistor is connected to the
First power input of one Source drive, the control terminal of the first transistor are connected to first choice control signal end, institute
The first power supply signal end is stated for exporting first power supply signal, the first choice control signal end is for exporting described the
One selection control signal；
The second switch sub-circuit includes second transistor, and the first end of the second transistor is connected to second source signal
End, the second end of the second transistor are connected to the second source input terminal of the first Source drive, the second transistor
Control terminal is connected to the first choice control signal end, and the second source signal end is for exporting the second source letter
Number；
The third switch sub-circuit includes third transistor, and the first end of the third transistor is connected to the first power supply signal
End, the second end of the third transistor are connected to the first power input of the second Source drive, the third transistor
Control terminal is connected to the second selection control signal end, and the second selection control signal end is for exporting the second selection control
Signal；
The 4th switch sub-circuit includes the 4th transistor, and the first end of the 4th transistor is connected to second source signal
End, the second end of the 4th transistor are connected to the second source input terminal of the second Source drive, the 4th transistor
Control terminal is connected to the second selection control signal end.
4. source drive device as described in claim 1, which is characterized in that the source drive device further include:
Sequence controller, the sequence controller are connected with the switching circuit, and the sequence controller is for exporting the choosing
Control signal is selected, the selection control signal includes first choice control signal and the second selection control signal.
5. source drive device as claimed in claim 4, which is characterized in that the source drive device further include:
Level shifting circuit, the input terminal of the level shifting circuit are connected to the sequence controller, the level conversion electricity
The output end on road is connected to the switching circuit, and the level shifting circuit is used to convert the sequence controller output
The level of selection control signal.
6. source drive device as described in claim 1, which is characterized in that the substrate includes:
Flip chip, the first Source drive are set to the side of the flip chip, and the second Source drive is set to the flip chip
The other side.
7. source drive device as described in claim 1, which is characterized in that first Source drive includes the first common signal
Input terminal, second Source drive include the second common signal input terminal, the first common signal input terminal and described the
Two common signal input terminals are connected to common signal end.
8. source drive device as described in claim 1, which is characterized in that the throwing of first Source drive on the substrate
The projection of shadow and second Source drive on the substrate is at least partly overlapped；
The source drive device further include:
Thermal insulation layer is set between the Source drive and the substrate.
9. a kind of driving method of source drive device, which is characterized in that for any one of the claim 1-8 source driving dress
It sets, the driving method includes:
Switching circuit is controlled using selection control signal, power supply signal is transmitted to the first Source drive, the first Source drive is defeated
Source drive signal out；
Switching circuit is controlled using selection control signal, power supply signal is transmitted to the second Source drive, the second Source drive is defeated
Source drive signal out.
10. the driving method of source drive device as claimed in claim 9, which is characterized in that when the switching circuit includes the
When one to the 4th switch sub-circuit, the driving method further include:
Signal conduction first switch sub-circuit and second switch sub-circuit are controlled using first choice, utilizes the second selection control letter
Number shutdown third switch sub-circuit and the 4th switch sub-circuit, the first power supply signal and second source signal are transmitted to first
Source drive；
Using first choice control signal shutdown first switch sub-circuit and second switch sub-circuit, the second selection control letter is utilized
Number conducting third switch sub-circuit and the 4th switch sub-circuit, the first power supply signal and second source signal are transmitted to second
Source drive.
11. a kind of display device, which is characterized in that including the described in any item source drive devices of claim 1-8.
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| CN201910384434.9A CN110335562B (en) | 2019-05-09 | 2019-05-09 | Source driving device, driving method and display device |
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| CN201910384434.9A CN110335562B (en) | 2019-05-09 | 2019-05-09 | Source driving device, driving method and display device |
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