CN109754748A - A kind of driving circuit of display panel, display panel and display device - Google Patents
A kind of driving circuit of display panel, display panel and display device Download PDFInfo
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- CN109754748A CN109754748A CN201711071004.9A CN201711071004A CN109754748A CN 109754748 A CN109754748 A CN 109754748A CN 201711071004 A CN201711071004 A CN 201711071004A CN 109754748 A CN109754748 A CN 109754748A
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Abstract
The embodiment of the invention discloses a kind of driving circuit of display panel, display panel and display devices.Driving circuit includes driving mainboard, and driving mainboard includes the first drive module, the first and second interface modules；Drive subplate, driving mainboard is independently arranged with driving subplate, driving subplate includes power module and third interface module, the electrical connection corresponding with the connecting pin of third interface module of the power supply signal output end and enable signal input terminal of power module, third interface module and second interface module are detachably electrically connected, the second electrical connection corresponding with the connecting pin of first interface module；The enable signal that power module is used to be inputted according to enable signal input terminal controls power supply signal output end out-put supply signal, and the power supply signal of output passes sequentially through third interface module, second interface module and first interface module transfer to display panel.According to the technical solution of the present invention, the utilization rate for improving the driving circuit of display panel reduces the maintenance cost of driving circuit.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of driving circuits of display panel, display panel
And display device.
Background technique
Currently, being directed to organic electroluminescence device, power module is typically integrated in the entire of organic electroluminescence device
A part work in driving circuit, as driving circuit.But since the load that power module is born is much larger than driving circuit
In other circuit modules, therefore the power module partial destruction in driving circuit is very fast, and when driving organic electroluminescence
When power module damage in the driving circuit of part is more serious, it may cause the entire wiring board of driving circuit and scrap, so that driving
The utilization rate of circuit board is extremely low, increases the maintenance cost of driving circuit wiring board, increases electronic waste.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of driving circuit of display panel, display panel and display device,
By being integrated in and being driven in the mutually independent driving subplate of mainboard by power module, i.e., setting power module is led independently of driving
Plate, and the third interface module being arranged in driving mainboard in second interface module and driving subplate is detachably electrically connected, and works as power supply
When module damage, driving subplate can be directly replaced, the utilization rate of the driving circuit of display panel is improved, reduces display surface
The maintenance cost of the driving circuit of plate.
In a first aspect, the embodiment of the invention provides a kind of driving circuits of display panel, comprising:
Mainboard is driven, the driving mainboard includes the first drive module, first interface module and second interface module, described
First drive module provides driving signal to the display panel by the first interface module；
Subplate is driven, the driving mainboard is independently arranged with the driving subplate, and the driving subplate includes power module
With third interface module, the power module includes multiple first signal ends, and first signal end includes power supply signal output
End and enable signal input terminal, the power supply signal output end and the enable signal input terminal and the third interface module
The corresponding electrical connection in connecting pin, the third interface module and the second interface module are detachably electrically connected, the second interface
The electrical connection corresponding with the connecting pin of the first interface module of the connecting pin of module；
The enable signal that the power module is used to be inputted according to the enable signal input terminal controls the power supply signal
Output end out-put supply signal, the power supply signal of output pass sequentially through the third interface module, the second interface module and
The first interface module transfer is to the display panel.
Further, the power supply signal output end include the first power supply signal output end, second source signal output end,
Third power supply signal output end, the enable signal input terminal include that the first enable signal input terminal and the second enable signal input
End；
The enable signal control described first that the power module is used to be inputted according to the first enable signal input terminal
Power supply signal output end out-put supply signal, the power module according to what the second enable signal input terminal inputted for making
It can the signal control second source signal output end and third power supply signal output end end out-put supply signal.
Further, the power module is also used to the enable signal tune inputted according to the second enable signal input terminal
Save the level value of the power supply signal of the first power supply signal output end and third power supply signal output end output.
Further, the third interface module includes multiple second signal ends and third signal end, the second signal
End is connected to third signal end one-to-one correspondence；The second interface module includes multiple fourth signal ends and the 5th signal
End, the fourth signal end are connected to the 5th signal end one-to-one correspondence；The first interface module includes multiple 6th letters
Number end and the 7th signal end, the 6th signal end and the 7th signal end are corresponded and are connected to；
The first power supply signal output end, the second source signal output end, the third of the power module
Power supply signal output end, the first enable signal input terminal and the second enable signal input terminal and the third interface mould
The corresponding electrical connection in the second signal end of block, the 4th of the third signal end of the third interface module and the second interface module the
The corresponding electrical connection of signal end, the 5th signal end of the second interface module and the 6th signal end pair of the first interface module
It should be electrically connected, the first power supply signal input of the 7th signal end of the first interface module and the display panel, second
Power supply signal input, third power supply signal input, the first enable signal output end and the second enable signal output end are corresponding
Electrical connection；
The power supply signal of the first power supply signal output end output passes sequentially through the third interface module, described second
Interface module and the first interface module transfer are to first power supply signal input, the second source signal output end
The power supply signal of output passes sequentially through the third interface module, the second interface module and the first interface module transfer
To the second source signal input part, the power supply signal of the third power supply signal output end output passes sequentially through the third
Interface module, the second interface module and the first interface module transfer are to the third power supply signal input；
The enable signal of the first enable signal output end output passes sequentially through the first interface module, described second
Interface module and the third interface module are transmitted to the first enable signal input terminal, the second enable signal output end
The enable signal of output passes sequentially through the first interface module, the second interface module and third interface module transmission
To the second enable signal input terminal.
Further, the driving mainboard further includes external power interface module, and the external power interface module includes
External power supply signal input part and the first external power supply signal output end, the external power supply signal input part and external power supply electricity
Connection；
First signal end of the power module further includes the first external power supply signal input part and the second external power supply letter
The external power supply signal of number input terminal, the first external power supply signal output end output passes sequentially through the second interface module
The first external power supply signal input part, the second external power supply signal input part are transmitted to the third interface module
Be electrically connected to ground.
Further, the external power interface module further includes the second external power supply signal output end, and described first drives
Dynamic model block includes third external power supply signal input part, the second external power supply signal output end and the third external power supply
Signal input part electrical connection.
Further, the power module further includes the first capacitive reactive element, the second capacitive reactive element, third capacitive reactive element and steady
Press element；
One end of first capacitive reactive element is electrically connected with the first power supply signal output end, and the other end is electrically connected with ground wire
It connects, the capacitance of first capacitive reactive element is more than or equal to 16 μ F, is less than or equal to 25 μ F；
One end of second capacitive reactive element is electrically connected with the second source signal output end, and the other end is electrically connected with ground wire
It connects, the capacitance of second capacitive reactive element is more than or equal to 16 μ F, is less than or equal to 25 μ F；
The first end of one end of the third capacitive reactive element and the third power supply signal output end and the voltage stabilizing element
Electrical connection, the other end are electrically connected with the second end of ground wire and the voltage stabilizing element, and the capacitance of the third capacitive reactive element is greater than
Equal to 22 μ F, it is less than or equal to 25 μ F, the pressure drop of its first end and second end is more than or equal to 0.15V when the voltage stabilizing element works,
Less than or equal to 0.45V.
Further, the power module further includes the 4th capacitive reactive element, the 5th capacitive reactive element and the 6th capacitive reactive element；
The first end of 4th to the 6th capacitive reactive element is electrically connected with the first external power supply signal input part, institute
The second end for stating the 4th to the 6th capacitive reactive element is electrically connected to ground with described, the capacitance of the 4th to the 6th capacitive reactive element
It is all larger than and is equal to 9 μ F, be less than or equal to 12 μ F.
Further, the second interface module and the third interface module are connector.
Further, one in the second interface module and the third interface module is public connector, another
For female connectors.
Second aspect, the present invention also provides a kind of display surfaces of driving circuit including display panel described in first aspect
Plate.
Further, display panel includes:
Second drive module, pixel-driving circuit, gate driving circuit and source electrode drive circuit；
The power supply signal output end includes the first power supply signal output end, second source signal output end, third power supply
Signal output end, the enable signal input terminal include the first enable signal input terminal and the second enable signal input terminal；
Second drive module includes driving power signal input part, the first driving power signal output end and the second drive
Dynamic signal output end, the driving power signal input part is as the first power supply signal input of the display panel and described
The power supply signal that first power supply signal output end of power module is brought out passes sequentially through the third interface module, described second connects
To the driving power signal input part, the first driving power signal is exported for mouth mold block and the first interface module transfer
End is electrically connected with the gate driving circuit, and second driving signal output end is electrically connected with the source electrode drive circuit, institute
State power supply signal control of second drive module for inputting according to the driving power signal input part the first driving electricity
Source signal output end outputs signal to the gate driving circuit, and second drive module is used to be believed according to the driving power
The power supply signal of number input terminal input controls second driving signal output end and outputs signal to source electrode drive circuit；
The pixel-driving circuit includes the first pixel power signal input part and the second pixel power signal input part, institute
State the second source signal input part and the power module of the first pixel power signal input part as the display panel
The power supply signal that second source signal output end is brought out passes sequentially through the third interface module, the second interface module and institute
First interface module transfer is stated to the first pixel power signal input part, the second pixel power signal input part conduct
The power supply that the third power supply signal input of the display panel and the third power supply signal output end of the power module are brought out
Signal passes sequentially through the third interface module, the second interface module and the first interface module transfer to described second
Pixel power signal input part, the pixel-driving circuit are used for according to the first pixel power signal input part and described the
The signal of two pixel power signal input parts input drives the display panel to be shown.
The third aspect, the embodiment of the invention also provides a kind of display devices including display panel described in second aspect.
The embodiment of the invention provides a kind of driving circuit of display panel, display panel and display device, by will be electric
Source module is integrated in the driving mutually independent driving subplate of mainboard, i.e., setting power module is independently of driving mainboard, and sets
It sets the third interface module in driving mainboard in second interface module and driving subplate to be detachably electrically connected, the signal of power module
End passes sequentially through third interface module, second interface module and first interface module and power supply signal is transmitted to display panel.When
When power module damages, driving subplate can be directly replaced, the utilization rate of the driving circuit of display panel is improved, is reduced aobvious
Show the maintenance cost of the driving circuit of panel.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do one simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram of the driving circuit for display panel that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram for pixel-driving circuit that the embodiment of the present invention one provides；
Fig. 3 is a kind of connecting pin schematic diagram for first interface module that the embodiment of the present invention one provides；
Fig. 4 is a kind of connecting pin schematic diagram of power module provided by Embodiment 2 of the present invention；
Fig. 5 is a kind of structural schematic diagram for display panel that the embodiment of the present invention three provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, clearly and completely describes technical solution of the present invention by embodiment, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is a kind of structural schematic diagram of the driving circuit for display panel that the embodiment of the present invention one provides, such as Fig. 1 institute
Show, the driving circuit of display panel includes the driving mainboard 1 being independently arranged and driving subplate 2, and driving mainboard 1 includes the first driving
Module 11, first interface module 12 and second interface module 13, driving subplate 2 include power module 21 and third interface module
22, power module 21 includes multiple first signal ends, and the first signal end includes power supply signal output terminals A and enable signal input terminal
B, power supply signal output terminals A and enable signal input terminal B electrical connection corresponding with the connecting pin of third interface module 22, third interface
Module 22 and second interface module 13 are detachably electrically connected, the connecting pin of second interface module 13 and the company of first interface module 12
The corresponding electrical connection in end is connect, the enable signal control power supply signal that power module 21 is used to input according to enable signal input terminal B is defeated
Outlet A out-put supply signal, the power supply signal of output passes sequentially through third interface module 22, second interface module 13 and first connects
Mouth mold block 12 is transmitted to display panel 3.
Optionally, power supply signal output terminals A may include the first power supply signal output terminals A 1, second source signal output end
A2, third power supply signal output terminals A 3, enable signal input terminal B may include the first enable signal input terminal B1 and second enabled
Signal input part B2.The enable signal that power module 21 is used to be inputted according to the first enable signal input terminal B1 controls the first power supply
Signal output end A1 out-put supply signal, power module 21 are used for the enable signal inputted according to the second enable signal input terminal B2
Control second source signal output end A2 and 3 end out-put supply signal of third power supply signal output terminals A.
Optionally, third interface module 22 includes multiple second signal end C and third signal end D, second signal end C and the
Three signal end D correspond connection；Second interface module 13 includes multiple fourth signal end E and the 5th signal end F, fourth signal
End E is connected to the 5th signal end F one-to-one correspondence；First interface module 12 includes multiple 6th signal end G and the 7th signal end H,
6th signal end G is connected to the 7th signal end H one-to-one correspondence.
First power supply signal output terminals A 1 of power module 21, second source signal output end A2, third power supply signal are defeated
The second signal end of outlet A3, the first enable signal input terminal B1 and the second enable signal input terminal B2 and third interface module 22
The corresponding electrical connection of C, the third signal end D of the third interface module 22 and fourth signal end E of second interface module 13 is corresponding is electrically connected
It connects, the 5th signal end F of second interface module 13 electrical connection corresponding with the 6th signal end G of first interface module 12, first connects
7th signal end H of mouth mold block 12 and the first power supply signal input K1, the second source signal input part K2, of display panel
Three power supply signal input K3, the first enable signal output end L1 and the corresponding electrical connection of the second enable signal output end L2.
The power supply signal of first power supply signal output terminals A 1 output passes sequentially through third interface module 22, second interface module
13 and first interface module 12 be transmitted to the first power supply signal input K1, the power supply letter of second source signal output end A2 output
It number passes sequentially through third interface module 22, second interface module 13 and first interface module 12 and is transmitted to the input of second source signal
K2 is held, the power supply signal that third power supply signal output terminals A 3 exports passes sequentially through third interface module 22, second interface module 13
Third power supply signal input K3 is transmitted to first interface module 12.The enable signal of first enable signal output end L1 output
It passes sequentially through first interface module 12, second interface module 13 and third interface module 22 and is transmitted to the first enable signal input terminal
The enable signal of B1, the second enable signal output end L2 output passes sequentially through first interface module 12,13 and of second interface module
Third interface module 22 is transmitted to the second enable signal input terminal B2.
Specifically, as shown in Figure 1, display panel can be defeated by the first enable signal output end L1 output enable signal
Enable signal out can pass sequentially through first interface module 12, second interface module 13 and third interface module 22 and be transmitted to electricity
The first enable signal input terminal B1 of first enable signal input terminal B1 of source module 21, power module 21 then can be according to receptions
The the first power supply signal output terminals A 1 of enable signal control arrived whether out-put supply signal.Illustratively, when the first enable signal
When the enable signal that input terminal B1 is received is high level, 1 out-put supply signal of the first power supply signal output terminals A.Make when first
Can the enable signal that receives of signal input part B1 when being low level, the first power supply signal output terminals A 1 not out-put supply signal.
Display panel can also export enable signal by the second enable signal output end L2, and the enable signal of output can be with
Passing sequentially through first interface module 12, second interface module 13 and third interface module 22 and being transmitted to the second of power module 21 makes
Energy signal input part B2, the second enable signal input terminal B2 of power module 21 can then be controlled according to the enable signal received
Second source signal output end A2 and third power supply signal output terminals A 3 whether out-put supply signal.Illustratively, when second makes
When the enable signal that energy signal input part B2 is received is high level, second source signal output end A2 and third power supply signal are defeated
Outlet A3 out-put supply signal.When the enable signal that the second enable signal input terminal B2 is received is low level, second source
Signal output end A2 and third power supply signal output terminals A 3 not out-put supply signal.
It should be noted that the high level and low level mentioned in above-described embodiment are relative concept, the present invention is implemented
Example is not construed as limiting the size of high level and low level level value.
Illustratively, display panel may include driving chip, pixel-driving circuit, gate driving circuit and source drive
Circuit, driving chip are electrically connected with gate driving circuit and source electrode drive circuit, and gate driving circuit and source electrode drive circuit are equal
It is electrically connected with pixel-driving circuit, gate driving circuit can provide gate drive signal, source drive to pixel-driving circuit
Circuit can provide source drive signal to pixel-driving circuit.
The power supply signal of the first power supply signal output end output of power module can pass through the first power supply of display panel
Driving chip of the signal input part into display panel provides power supply signal, and driving chip can pass through the power supply signal received
Gate drive voltage is converted to by gate driving circuit, gate drive voltage for example can be the alternate pulse letter of low and high level
Number.The power supply signal received can also be converted to source drive voltage via source electrode drive circuit by driving chip, and source electrode drives
Dynamic voltage is related to the grayscale value of pixel in the pre-display picture of display panel, and the pixel-driving circuit in display panel is in grid
Display panel is driven to realize display function under the action of driving voltage and source drive voltage.
Fig. 2 is a kind of structural schematic diagram for pixel-driving circuit that the embodiment of the present invention one provides.As shown in Fig. 2, here
Illustratively setting pixel-driving circuit 33 is made of two thin film transistor (TFT) T and a capacitor C, and the embodiment of the present invention is to pixel
The number of thin film transistor (TFT) T and capacitor C are not construed as limiting in driving circuit 33.If Fig. 2, thin film transistor (TFT) T1 are switching transistor,
Thin film transistor (TFT) T2 is driving transistor, and thin film transistor (TFT) T1 is used to be written data-signal the grid of thin film transistor (TFT) T2, thin
The driving plate electric current that film transistor T2 is generated is used to drive the pixel unit 311 in display panel to shine and realizes the aobvious of display panel
Show function.The power supply signal of the second source signal output end A2 output of power module 21 can be by aobvious combined with Figure 1 and Figure 2,
One end ELVDD for showing that the second source signal input part K2 of panel is not electrically connected with pixel unit 311 to thin film transistor (TFT) T2 is mentioned
It powers source signal, the power supply signal that the third power supply signal output terminals A 3 of power module 21 exports can pass through the of display panel
Three one end that pixel unit 311 is not electrically connected with thin film transistor (TFT) T2 into pixel-driving circuit 33 power supply signal input K3
ELVSS provides power supply signal, and the driving current and thin film transistor (TFT) T2 that thin film transistor (TFT) T2 is generated are not electrically connected with pixel unit 311
The voltage phase of one end ELVSS that the voltage and pixel unit 311 of one end ELVDD connect is not electrically connected with driving transistor T2
It closes.
Since the power module 21 in driving subplate 2 provides main power source signal required for display panel, such as drive
Power supply signal needed for dynamic chip power signal and pixel-driving circuit, power module 21 relative to other circuits its loads more
Weight, rate of decay faster, by by power module 21 be integrated in drive the mutually independent driving subplate 2 of mainboard 1 in so that working as
When power module 21 damages, driving subplate 2 can be directly replaced, the maintenance cost of the driving circuit of display panel is reduced.
Optionally, power module can be also used for adjusting first according to the enable signal that the second enable signal input terminal inputs
The level value of power supply signal output end and the power supply signal of third power supply signal output end output.Specifically, combined with Figure 1 and Figure 2,
Power module 21 can also pass sequentially through first interface module 12, second according to the second enable signal output end L2 of display panel
Interface module 13 and third interface module 22 are transmitted to the enable signal of the second enable signal input terminal B2 of power module 21, adjust
It saves the first power supply signal output terminals A 1 and passes sequentially through third interface module 22, second interface module 13 and the biography of first interface module 12
The level value of the power supply signal of the first power supply signal input K1 of display panel is transported to, that is, adjusts to be transmitted in display panel and drive
The level value of the power supply signal of dynamic chip.The enabled letter that power module 21 can also be inputted according to the second enable signal input terminal B2
Number adjust third power supply signal output terminals A 3 pass sequentially through third interface module 22, second interface module 13 and first interface module
12 are transmitted to the level value of the power supply signal of the third power supply signal input K3 of display panel, that is, adjust and be transmitted to display panel
Pixel unit 311 is not electrically connected the level value of the power supply signal of one end ELVSS with thin film transistor (TFT) T2 in pixel-driving circuit 33.
Optionally, as shown in Figure 1, driving mainboard 1 can also include external power interface module 14, external power interface mould
Block 14 includes external power supply signal input part (not shown in figure 1) and the first external power supply signal output end M1, external power supply letter
Number input terminal is electrically connected with external power supply (not shown in figure 1), and external power supply for example can be power supply adaptor.Power module 21
The first signal end can also include the first external power supply signal input part N1 and the second external power supply signal input part N2, first
External power supply signal output end M1 output external power supply signal pass sequentially through the corresponding connecting pin R1 of second interface module 13 and
S1 and third interface module 22 are correspondingly connected with end P1 and Q1 and are transmitted to the first external power supply signal input part N1, the second external power supply
Signal input part N2 be electrically connected to ground, and the second external power supply signal input part N2 pass through the corresponding company of third interface module 22
Connect end Q2 and P2, the corresponding connecting pin S2 and R2 of second interface module 13 and the corresponding connecting pin T2 of first interface module 12 and
U2 grounding connection corresponding with display panel end V2 electrical connection, external power supply can be by external power interface modules 14 to power supply
Module 21 provides external power supply signal.
Optionally, as shown in Figure 1, external power interface module 14 further includes the second external power supply signal output end M2, the
One drive module 11 includes third external power supply signal input part W1, the second external power supply signal output end M2 and third external electrical
Source signal input terminal W1 electrical connection, i.e. external power supply can pass through external power interface module 14 first into driving mainboard 1
Drive module 11 provides external power supply signal.
Fig. 3 is a kind of connecting pin schematic diagram for first interface module that the embodiment of the present invention one provides.In conjunction with Fig. 1 and Fig. 3,
Fig. 3 exemplarily only shows first interface module 12 and is electrically connected side with the first drive module 11 and second interface module 13
(connecting pin of first interface module 12 is labeled in by Fig. 3 to be electrically connected with the strip pins of first interface module 12 for specific connecting pin
On lead).Specifically, being directed to the connection relationship of first interface module 12 and second interface module 13, connecting pin OLED_EN passes through
Second interface module 13 and third interface module 22 are electrically connected with the first enable signal input terminal B1 of power module 21, connecting pin
SWIRE is electrically connected by second interface module 13 and third interface module 22 and the second enable signal input terminal B2 of power module 21
It connects, connecting pin VSP is exported by the first power supply signal of second interface module 13 and third interface module 22 and power module 21
Hold A1 electrical connection, the second electricity that connecting pin ELVDD passes through second interface module 13 and third interface module 22 and power module 21
Source signal output terminals A 2 is electrically connected, and connecting pin ELVSS passes through second interface module 13 and third interface module 22 and power module
21 third power supply signal output terminals A 3 is electrically connected.
For the connection relationship of first interface module 12 and the first drive module 11, the first drive module 11 passes through connecting pin
The initial code memory module of VPP driving chip into display panel provides power supply signal, and the first drive module 11 passes through company
It connects driving chip analog circuit of the end VDD into display panel and power supply signal is provided, the first drive module 11 passes through connecting pin
Signal input output interface of the VDDIO into display panel provides power supply signal, and the first drive module 11 is real by connecting pin ID
The now communication between display panel, such as the first drive module 11 can be provided by first interface module 12 to display panel
Driving signal, the first drive module 11 by connecting pin RESET in display panel driving chip carry out reset processing, first
Drive module 11 by connecting pin D0 to D3 (i.e. connecting pin D0N, connecting pin D0P, connecting pin D1N, connecting pin D1P in Fig. 3,
Connecting pin D2N, connecting pin D2P, connecting pin D3N and connecting pin D3P) to display panel export MIPI (Mobile Industry
Processor Interface, mobile industry processor interface) data-signal, it is real that the first drive module 11 passes through connecting pin TE
Now with the synchronous communication of display panel, connecting pin CP and connecting pin CN are then the clock signal terminals for controlling MIPI.
It should be noted that Fig. 1 only schematically indicates display using a conductive lead wire (lead of overstriking in Fig. 1)
The electrical connection of panel 3 and first interface module 12 and first interface module 12 and the first drive module 11, does not represent
The two is only correspondingly connected with end electrical connection for one group, and specific electrical connection is referred to the structure of first interface module shown in Fig. 3
Schematic diagram.In addition, Fig. 1 is only exemplary putting in order for the connecting pin for showing each module, the embodiment of the present invention to this not
It limits.
Optionally, second interface module and third interface module can be connector, and the two is detachably electrically connected, and second connects
One in mouth mold block and third interface module is public connector, another is female connectors, i.e., second interface module is public connects
Device is connect, third interface module is female connectors or second interface module is female connectors, and third interface module is public connection
Device.
The embodiment of the present invention one is set by being integrated in and being driven in the mutually independent driving subplate of mainboard by power module
Power module is set independently of driving mainboard, and the third interface mould in driving mainboard in second interface module and driving subplate is set
Block is detachably electrically connected, and the signal end of power module passes sequentially through third interface module, second interface module and first interface mould
Power supply signal is transmitted to display panel by block.When power module damage, driving subplate can be directly replaced, display surface is improved
The utilization rate of the driving circuit of plate reduces the maintenance cost of the driving circuit of display panel.
Embodiment two
On the basis of the above embodiments, Fig. 4 is that a kind of connecting pin of power module provided by Embodiment 2 of the present invention shows
It is intended to.In conjunction with Fig. 1, Fig. 3 and Fig. 4, first power supply signal output terminals A 1 of the connecting pin VSP ' as power module 21, connecting pin
ELVDD ' is electric as the third of power module 21 as second source the signal output end A2, connecting pin ELVSS ' of power module 21
Source signal output terminals A 3, first enable signal input terminal B1 of the connecting pin OLED_EN ' as power module 21, connecting pin
Second enable signal input terminal B2 of the SWIRE ' as power module 21.Illustratively, connecting pin VSP ', connecting pin OLED_EN '
It can be electrically connected respectively by light emitting diode D3 with ground terminal GND with connecting pin ELVDD ', light emitting diode D3 can be passed through
Luminance monitoring connecting pin VSP ', on connecting pin OLED_EN ' and connecting pin ELVDD ' current potential variation.
In conjunction with Fig. 1 and Fig. 4, power module 21 can also include the first capacitive reactive element C6, the second capacitive reactive element C4, third appearance
Anti- element C5 and voltage stabilizing element D2.One end of first capacitive reactive element C6 is electrically connected with the first power supply signal output terminals A 1, the other end
Be electrically connected to ground, the capacitance of the first capacitive reactive element C6 is more than or equal to 16 μ F, is less than or equal to 25 μ F；Second capacitive reactive element C4's
One end is electrically connected with second source signal output end A2, the other end be electrically connected to ground, the capacitance of the second capacitive reactive element C4 is big
In being equal to 16 μ F, it is less than or equal to 25 μ F；One end of third capacitive reactive element C5 and third power supply signal output terminals A 3 and voltage stabilizing element
The first end of D2 is electrically connected, and the other end is electrically connected with the second end of voltage stabilizing element D2, and the capacitance of third capacitive reactive element C5 is greater than
Equal to 22 μ F, it is less than or equal to 25 μ F, the pressure drop of its first end and second end is more than or equal to 0.15V when voltage stabilizing element works, and is less than
Equal to 0.45V.First capacitive reactive element C6 can make the first power supply signal output terminals A 1 of power module 21, i.e. connecting pin VSP ' is defeated
Power supply signal out is more stable, and the second capacitive reactive element C4 can make the second source signal output end A2 of power module 21, i.e.,
The power supply signal for connecting ELVDD ' output is more stable, and third capacitive reactive element C5 can make the third power supply signal of power module 21
The power supply signal of output terminals A 3, i.e. connecting pin ELVSS ' output is more stable, and voltage stabilizing element D2 can guarantee third power supply signal
The level value of the power supply signal of output terminals A 3, i.e. connecting pin ELVSS ' output will not mutate, illustratively, voltage stabilizing element D2
It can be zener diode.
Optionally, in conjunction with Fig. 1 and Fig. 4, power module 21 can also include the 4th capacitive reactive element C1, the 5th capacitive reactive element C2
With the 6th capacitive reactive element C3, the first end of the 4th capacitive reactive element C1, the 5th capacitive reactive element C2 and the 6th capacitive reactive element C3 are with
One external power supply signal input part N1 electrical connection, the 4th capacitive reactive element C1, the 5th capacitive reactive element C2 and the 6th capacitive reactive element C3's
Second end is electrically connected with ground terminal GND, the capacitor of the 4th capacitive reactive element C1, the 5th capacitive reactive element C2 and the 6th capacitive reactive element C3
Value is all larger than equal to 9 μ F, is less than or equal to 12 μ F.First external power supply signal output end M1 of external power interface module 14 is exported
External power supply signal the first external electrical of power module 21 is transmitted to by second interface module 13 and third interface module 22
Source signal input terminal N1, the 4th capacitive reactive element C1, the 5th capacitive reactive element C2 and the 6th capacitive reactive element C3 being capable of steady external source of power
First external power supply signal output end M1 of interface module 14 is exported to the first external power supply signal input part of power module 21
N1, i.e. the external power supply signal of connecting pin VIN '.
In conjunction with Fig. 1 and Fig. 4, the pin CT of power module 21 is used to be arranged the arithmetic speed of power module 21, i.e. pin CT
The second enable signal input terminal B2 can be controlled, i.e. connecting pin SWIRE ' adjusts the first power supply signal output terminals A 1, i.e. connecting pin
The speed and connecting pin SWIRE ' of VSP ' adjusts third power supply signal output terminals A 3, i.e. connecting pin ELVSS ' speed, and pin
CT is electrically connected by a capacitive reactive element C7 with ground terminal GND, and capacitive reactive element C7 plays filter action.The pin of power module 21
For SELP2 for controlling whether power module 21 discharges, pin SWP1 is used to control the voltage of connecting pin ELVDD ', and pin SWN is used
In the voltage of control connecting pin ELVSS ', pin FBS is for receiving the first power supply signal output terminals A 1, i.e. on connecting pin ELVDD '
The voltage of feedback is monitored the voltage of connecting pin ELVDD ' output.In addition, the resistive element R in figure plays current limliting work
With inductance component L plays the role of energy storage.
The embodiment of the present invention two passes through the setting of capacitive reactive element and voltage stabilizing element, so that the first power supply signal of power module
The voltage signal of output end, second source signal output end and the output of third power supply signal output end is more stable, i.e., power supply is believed
Number level will not mutate, reduce in the driving circuit of display panel power module damage probability.
Embodiment three
On the basis of the above embodiments, Fig. 5 is a kind of structural representation for display panel that the embodiment of the present invention three provides
Figure, it further includes the second drive module 32, pixel driver that display panel, which includes the driving circuit 31 of the display panel of above-described embodiment,
Circuit 33, gate driving circuit 34 and source electrode drive circuit 35, the second drive module 32 here for example can be display panel
In driving chip.
In conjunction with Fig. 1 and Fig. 5, the power supply signal output terminals A of power module 21 includes the first power supply signal in driving circuit 31
Output terminals A 1, second source signal output end A2, third power supply signal output terminals A 3, enable signal input terminal B make including first
It can signal input part B1 and the second enable signal input terminal B2.Second drive module 32 include driving power signal input part K11,
First driving power signal output end and the second driving signal output end, driving power signal input part K11 is as display panel 3
The first power supply signal input K1 and the power supply signal that brings out of the first power supply signal output terminals A 1 of power module 21 successively lead to
It crosses third interface module 22, second interface module 13 and first interface module 12 and is transmitted to driving power signal input part K11, the
One driving power signal output end K12 is electrically connected with gate driving circuit 34, the second driving signal output end K13 and source drive
Circuit 35 is electrically connected, and the power supply signal that the second drive module 32 is used to input according to driving power signal input part K11 controls the
One driving power signal output end K12 outputs signal to gate driving circuit 34, and the second drive module 32 is used for according to driving electricity
The power supply signal of source signal input terminal K11 input controls the second driving signal output end K13 and outputs signal to source electrode drive circuit
35。
Pixel-driving circuit 33 includes the first pixel power signal input part K21 and the second pixel power signal input part
The second source signal input part K2 and power module 21 of K22, the first pixel power signal input part K21 as display panel 3
The power supply signal that brings out of second source signal output end A2 pass sequentially through third interface module 22, second interface module 13 and
One interface module 12 is transmitted to the first pixel power signal input part K21, and the second pixel power signal input part is as display surface
The power supply signal that the third power supply signal input K3 of plate and the third power supply signal output terminals A 3 of power module 21 are brought out is successively
The second pixel power signal input part is transmitted to by third interface module 22, second interface module 13 and first interface module 12
K22, pixel-driving circuit 33 are used for according to the first pixel power signal input part K21 and the second pixel power signal input part
The signal driving display panel of K22 input is shown.
The embodiment of the present invention is arranged by being integrated in and being driven in the mutually independent driving subplate of mainboard by power module
The third interface module in driving mainboard in second interface module and driving subplate is arranged independently of driving mainboard in power module
Detachable electrical connection, the signal end of power module pass sequentially through third interface module, second interface module and first interface module
Power supply signal is transmitted to display panel.When power module damage, driving subplate can be directly replaced, display panel is improved
The utilization rate of driving circuit reduces the maintenance cost of display panel, drive circuit.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The present invention is not limited to specific embodiments here, be able to carry out for a person skilled in the art it is various it is apparent variation, again
Adjustment and substitution are without departing from protection scope of the present invention.Therefore, although by above embodiments to the present invention carried out compared with
For detailed description, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, can be with
Including more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (13)
1. a kind of driving circuit of display panel characterized by comprising
Drive mainboard, the driving mainboard include the first drive module, first interface module and second interface module, described first
Drive module provides driving signal to the display panel by the first interface module；
Subplate is driven, the driving mainboard is independently arranged with the driving subplate, and the driving subplate includes power module and the
Three interface modules, the power module include multiple first signal ends, first signal end include power supply signal output end and
Enable signal input terminal, the connection of the power supply signal output end and the enable signal input terminal and the third interface module
The corresponding electrical connection in end, the third interface module and the second interface module are detachably electrically connected, the second interface module
Connecting pin it is corresponding with the connecting pin of the first interface module electrical connection；
The enable signal that the power module is used to be inputted according to the enable signal input terminal controls the power supply signal and exports
Out-put supply signal is held, the power supply signal of output passes sequentially through the third interface module, the second interface module and described
First interface module transfer is to the display panel.
2. driving circuit according to claim 1, which is characterized in that the power supply signal output end is believed including the first power supply
Number output end, second source signal output end, third power supply signal output end, the enable signal input terminal include first enabled
Signal input part and the second enable signal input terminal；
The enable signal that the power module is used to be inputted according to the first enable signal input terminal controls first power supply
Signal output end out-put supply signal, the power module are used for the enabled letter inputted according to the second enable signal input terminal
Number control the second source signal output end and third power supply signal output end end out-put supply signal.
3. driving circuit according to claim 2, which is characterized in that the power module is also used to make according to described second
The enable signal of energy signal input part input adjusts the first power supply signal output end and the third power supply signal output end
The level value of the power supply signal of output.
4. driving circuit according to claim 2, which is characterized in that the third interface module includes multiple second signals
End and third signal end, the second signal end are connected to third signal end one-to-one correspondence；The second interface module packet
Multiple fourth signal ends and the 5th signal end are included, the fourth signal end is connected to the 5th signal end one-to-one correspondence；It is described
First interface module includes multiple 6th signal ends and the 7th signal end, and the 6th signal end and the 7th signal end are one by one
Corresponding connection；
The first power supply signal output end, the second source signal output end, the third power supply of the power module
Signal output end, the first enable signal input terminal and the second enable signal input terminal and the third interface module
The corresponding electrical connection in second signal end, the fourth signal of the third signal end of the third interface module and the second interface module
The corresponding electrical connection in end, the 5th signal end of second interface module electricity corresponding with the 6th signal end of the first interface module
Connection, the 7th signal end of the first interface module and the first power supply signal input, the second source of the display panel
Signal input part, third power supply signal input, the first enable signal output end and the second enable signal output end correspondence are electrically connected
It connects；
The power supply signal of the first power supply signal output end output passes sequentially through the third interface module, the second interface
To first power supply signal input, the second source signal output end is exported for module and the first interface module transfer
Power supply signal pass sequentially through the third interface module, the second interface module and the first interface module transfer to institute
Second source signal input part is stated, the power supply signal of the third power supply signal output end output passes sequentially through the third interface
Module, the second interface module and the first interface module transfer are to the third power supply signal input；
The enable signal of the first enable signal output end output passes sequentially through the first interface module, the second interface
Module and the third interface module are transmitted to the first enable signal input terminal, the second enable signal output end output
Enable signal pass sequentially through the first interface module, the second interface module and the third interface module and be transmitted to institute
State the second enable signal input terminal.
5. driving circuit according to claim 1, which is characterized in that the driving mainboard further includes external power interface mould
Block, the external power interface module include external power supply signal input part and the first external power supply signal output end, described outer
Portion's power supply signal input is electrically connected with external power supply；
First signal end of the power module further includes that the first external power supply signal input part and the second external power supply signal are defeated
Enter end, the external power supply signal of the first external power supply signal output end output passes sequentially through the second interface module and institute
It states third interface module and is transmitted to the first external power supply signal input part, the second external power supply signal input part and ground
Line electrical connection.
6. driving circuit according to claim 5, which is characterized in that the external power interface module further includes outside second
Portion's power supply signal output end, first drive module include third external power supply signal input part, second external power supply
Signal output end is electrically connected with the third external power supply signal input part.
7. driving circuit according to claim 2, which is characterized in that the power module further include the first capacitive reactive element,
Second capacitive reactive element, third capacitive reactive element and voltage stabilizing element；
One end of first capacitive reactive element is electrically connected with the first power supply signal output end, the other end be electrically connected to ground,
The capacitance of first capacitive reactive element is more than or equal to 16 μ F, is less than or equal to 25 μ F；
One end of second capacitive reactive element is electrically connected with the second source signal output end, the other end be electrically connected to ground,
The capacitance of second capacitive reactive element is more than or equal to 16 μ F, is less than or equal to 25 μ F；
One end of the third capacitive reactive element and the first end of the third power supply signal output end and the voltage stabilizing element are electrically connected
It connects, the other end is electrically connected with the second end of ground wire and the voltage stabilizing element, and the capacitance of the third capacitive reactive element is more than or equal to
22 μ F are less than or equal to 25 μ F, and the pressure drop of its first end and second end is more than or equal to 0.15V when the voltage stabilizing element works, and is less than
Equal to 0.45V.
8. driving circuit according to claim 5, which is characterized in that the power module further include the 4th capacitive reactive element,
5th capacitive reactive element and the 6th capacitive reactive element；
The first end of 4th to the 6th capacitive reactive element is electrically connected with the first external power supply signal input part, and described
The second end of four to the 6th capacitive reactive elements is electrically connected to ground with described, and the capacitance of the 4th to the 6th capacitive reactive element is big
In being equal to 9 μ F, it is less than or equal to 12 μ F.
9. driving circuit according to claim 1, which is characterized in that the second interface module and the third interface mould
Block is connector.
10. driving circuit according to claim 9, which is characterized in that the second interface module and the third interface
One in module is public connector, another is female connectors.
11. a kind of display panel, which is characterized in that the driving electricity including the described in any item display panels of claim 1-10
Road.
12. display panel according to claim 11 characterized by comprising
Second drive module, pixel-driving circuit, gate driving circuit and source electrode drive circuit；
The power supply signal output end includes the first power supply signal output end, second source signal output end, third power supply signal
Output end, the enable signal input terminal include the first enable signal input terminal and the second enable signal input terminal；
Second drive module includes driving power signal input part, the first driving power signal output end and the second driving letter
Number output end, first power supply signal input and the power supply of the driving power signal input part as the display panel
The power supply signal that first power supply signal output end of module is brought out passes sequentially through the third interface module, the second interface mould
Block and the first interface module transfer to the driving power signal input part, the first driving power signal output end with
Gate driving circuit electrical connection, second driving signal output end are electrically connected with the source electrode drive circuit, and described the
The power supply signal that two drive modules are used to be inputted according to the driving power signal input part, which controls first driving power, to be believed
Number output end outputs signal to the gate driving circuit, and second drive module is used for defeated according to the driving power signal
The power supply signal for entering end input controls second driving signal output end and outputs signal to source electrode drive circuit；
The pixel-driving circuit includes the first pixel power signal input part and the second pixel power signal input part, and described the
One pixel power signal input part as the display panel second source signal input part and the power module second
The power supply signal that power supply signal output end is brought out passes sequentially through the third interface module, the second interface module and described
One interface module is transmitted to the first pixel power signal input part, described in the second pixel power signal input part is used as
The power supply signal that the third power supply signal input of display panel and the third power supply signal output end of the power module are brought out
The third interface module, the second interface module and the first interface module transfer are passed sequentially through to second pixel
Power supply signal input, the pixel-driving circuit are used for according to the first pixel power signal input part and second picture
The signal of plain power supply signal input input drives the display panel to be shown.
13. a kind of display device, which is characterized in that including the display panel described in claim 12.
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| CN201711071004.9A CN109754748B (en) | 2017-11-03 | 2017-11-03 | Display panel's drive circuit, display panel and display device |
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| CN201711071004.9A CN109754748B (en) | 2017-11-03 | 2017-11-03 | Display panel's drive circuit, display panel and display device |
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