CN104916249B - A kind of drive circuit and display device for display panel - Google Patents
A kind of drive circuit and display device for display panel Download PDFInfo
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- CN104916249B CN104916249B CN201510367224.0A CN201510367224A CN104916249B CN 104916249 B CN104916249 B CN 104916249B CN 201510367224 A CN201510367224 A CN 201510367224A CN 104916249 B CN104916249 B CN 104916249B
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Abstract
The invention discloses a kind of drive circuit and display device for display panel, the drive circuit includes：Control circuit, on-off circuit and integrated circuit, wherein：The control signal of the output end connecting valve circuit of control circuit, for on-off circuit transmission of control signals, with being turned on or off for controlling switch circuit；The signal input part of the output end connecting valve circuit of integrated circuit, for on-off circuit transmission at least shift LD signal all the way；The output end connection display panel of on-off circuit, for when control signal controlling switch circuit turn-on, on-off circuit output end will at least shift LD signal be transmitted to display panel all the way, to drive display panel.The present invention controls the output of shift LD signal by the control circuit and on-off circuit of hardware, it is not necessary to control parameter is set in IC to control the output per shift LD signal all the way, therefore the process controlled by hardware mode is simple.
Description
Technical field
The present invention relates to Display Technique, more particularly to a kind of drive circuit and display device for display panel.
Background technology
Existing display device mainly includes display panel and drives the IC of display panel, and IC is with showing
Show that panel connects, for transmitting shift LD signal to display panel to drive display panel to show.
The shift LD signal of driving display panel comprises at least：Display panel input signal (STV), display panel scanning
Clock signal (CKV), display panel data switch signal (CKH), display panel forward scan signal (U2D), display panel are anti-
To scanning signal (D2U), display panel reset signal (GRESET).
In the prior art, the shift LD such as STV, CKV, CKH, U2D, D2U, GRESET signal is controlled by IC settings
Whether system is exported to display panel.Specifically, display panel has the shift LD signal that multiple signal input parts receive IC, passes through
To different control parameters is write in IC, IC controls certain road shift LD signal according to the control parameter
Whether export.
Prior art is to control whether shift LD signal exports by the control parameter set in IC, can not
Output control to shift LD signal is realized by hardware circuit.
The content of the invention
The present invention provides a kind of drive circuit and display device for display panel, to solve problem of the prior art.
In a first aspect, a kind of drive circuit for display panel provided by the invention, including：Control circuit, switch electricity
Road and integrated circuit, wherein：
The output end of the control circuit connects the control signal of the on-off circuit, for being passed to the on-off circuit
Defeated control signal, to control being turned on or off for the on-off circuit；
The output end of the integrated circuit connects the signal input part of the on-off circuit, for being passed to the on-off circuit
Transport to few shift LD signal all the way；
The output end of the on-off circuit connects the display panel, for when the control signal control switch electricity
Road turn on when, the on-off circuit output end will at least the shift LD signal be transmitted to the display panel all the way.
Second aspect, the present invention also provide a kind of display device, including drive circuit as described in relation to the first aspect.
A kind of drive circuit and display device for display panel provided by the invention, drive circuit pass through control circuit
The conducting and disconnection of controlling switch circuit, shift LD signal is transmitted to on-off circuit by IC, on-off circuit exists
When being turned under the control of control circuit, then on-off circuit by reception at least shift LD signal is transmitted to display panel all the way,
To drive display panel.The present invention controls the output of shift LD signal by the control circuit and on-off circuit of hardware, is not required to
Control parameter is set in IC to control the output per shift LD signal all the way, therefore passes through hardware mode control
The process of system is simple.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to do one and simply introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic diagram of drive circuit for display panel provided in an embodiment of the present invention；
Fig. 2 a are a kind of schematic diagrames of drive circuit for display panel provided in an embodiment of the present invention；
Fig. 2 b be it is provided in an embodiment of the present invention another be used for display panel drive circuit schematic diagram；
Fig. 2 c be it is provided in an embodiment of the present invention another be used for display panel drive circuit schematic diagram；
Fig. 3 be it is provided in an embodiment of the present invention another be used for display panel drive circuit schematic diagram.
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, technical scheme is clearly and completely described by embodiment, it is clear that described embodiment is the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
With reference to shown in figure 1, a kind of signal of the drive circuit for display panel provided for first embodiment of the invention
Figure.The technical scheme of the embodiment of the present invention is applied to control display panel to receive shift LD control signal by hardware circuit
Situation.As illustrated, the drive circuit for being used for display panel 400 includes：Control circuit 100, IC 200 and open
Powered-down road 300.
Wherein, the control signal of the output end connecting valve circuit 300 of control circuit 100, IC 200 it is defeated
Go out to hold the signal input part of connecting valve circuit 300, the output end connection display panel 400 of on-off circuit 300.
Control circuit 100 is used for the control signal transmission of control signals to on-off circuit 300, with controlling switch circuit
300 are turned on or off.Optionally, the control signal that control circuit 100 is transmitted to the control signal of on-off circuit 300 includes
First control signal or the second control signal, it is preferably provided with the first control signal controlling switch circuit 300 and turns on, and the second control
Signal control switch circuit 300 processed disconnects.Whether control circuit 100 exports shift LD signal for controlling switch circuit 300.
IC 200 is used for the signal input part transmission at least shift LD signal all the way to on-off circuit 300,
To export at least shift LD signal all the way to display panel 400 by on-off circuit 300.Specifically, IC 200 is used
In output at least shift LD signal all the way, at least shift LD all the way that on-off circuit 300 receives that IC 200 transmits
Signal, after on-off circuit 300 turns on, at least shift LD signal output all the way of reception can be worked as switch by on-off circuit 300
After circuit 300 disconnects, the output end of on-off circuit 300 is hanging, not output signal.
The control signal of on-off circuit 300 receives the control signal that control circuit 100 exports, in control circuit
Be turned on or off under 100 control, the signal input part of on-off circuit 300 receive that IC 200 exports at least all the way
Shift LD signal, for the output at least shift LD signal all the way in conducting.Specifically, on-off circuit 300 is used for when control
When the control signal controlling switch circuit 300 that circuit 100 processed exports turns on, the output end of on-off circuit 300 inputs a signal into end
Receive at least shift LD signal is transmitted to display panel 400 all the way, to drive display panel 400.
It should be noted that the signal input part of on-off circuit 300 receives at least shift LD signal all the way, on-off circuit
The control signal that 300 control signal receives is specifically used for every shift LD all the way that controlling switch circuit 300 respectively receives
Whether signal is transmitted to display panel 400, therefore corresponds to corresponding control signal, control circuit per shift LD signal all the way
100 realize to per the independent control that whether shift LD signal exports all the way respectively.
Display panel 400 receives the shift LD signal that on-off circuit 300 exports, and according to the shift LD signal of reception
Perform corresponding operating.
Optionally, control circuit 100 is flexible print circuit board (FPC).The control signal of on-off circuit 300 is connected to
FPC, by being turned on or off for FPC control signal controlling switch circuit 300, to control per the defeated of shift LD signal all the way
Go out mode.In the prior art, whether IC 200 controls defeated per shift LD signal all the way according to default parameter value
Go out；And in the present embodiment, the circuit for controlling shift LD signal output and line are arranged in FPC, with FPC controlling switches electricity
Whether road 300 realizes and is controlled by hardware circuit FPC, on-off circuit 300 by shift LD signal output to display panel 400
Whether system exports per shift LD signal all the way.
Signal input part transmission at least all the way shift LD signal of the IC 200 to on-off circuit 300, it is optional
, the shift LD signal comprises at least display panel input signal (STV), display panel scanning sequence signal (CKV), display
It is panel data switching signal (CKH), display panel forward scan signal (U2D), display panel reverse scan signal (D2U), aobvious
Show one kind in panel reset signal (GRESET), but not limited to this.Display panel input signal (STV) is used to drive display surface
The gate driving circuit of plate 400, display panel scanning sequence signal (CKV) are used for the scan line for driving display panel 400, display
Panel data switching signal (CKH) is used for the data wire for driving display panel 400, and display panel forward scan signal (U2D) is used
Scanned successively from top to bottom in the scan line of driving display panel 400, display panel reverse scan signal (D2U) is aobvious for driving
Show that the scan line of panel 400 scans successively from top to bottom, display panel reset signal (GRESET) is used to drive display panel 400
Circuit reset.
It should be noted that if the shift LD that IC 200 transmits to the signal input part of on-off circuit 300 is believed
Number be only display panel 400 needed for transposition of partial deposit signal when, then for it is remaining do not pass through hardware circuit switch electricity
Transposition of partial deposit signal is directly transferred to display panel by the shift LD signal that road 300 is transmitted, IC 200
400.Specifically, for the remaining shift LD signal not transmitted by hardware circuit on-off circuit 300, integrated circuit
Control parameter is provided with IC200, for controlling whether transposition of partial deposit signal is exported to display panel 400.
Drive circuit provided in an embodiment of the present invention for display panel 400, pass through the controlling switch of control circuit 100 electricity
The conducting and disconnection on road 300, shift LD signal, on-off circuit 300 are transmitted to on-off circuit 300 by IC 200
When being turned under the control of control circuit 100, then on-off circuit 300 by reception at least shift LD signal is transmitted to aobvious all the way
Show panel 400, to drive display panel 400.The present invention controls displacement by the control circuit 100 and on-off circuit 300 of hardware
Deposit the output of signal, it is not necessary to which control parameter is set in IC 200 to control per shift LD signal all the way
Output, therefore the process controlled by hardware mode is simple.
With reference to shown in figure 2a, a kind of signal of the drive circuit for display panel provided for another embodiment of the present invention
Figure.The technical scheme of the embodiment of the present invention is applied to control display panel to receive shift LD control signal by hardware circuit
Situation.As shown in Figure 2 a, the drive circuit for being used for display panel 400 includes：Control circuit 100, on-off circuit 300 and integrated
Circuit 200.
Wherein, the control signal of the output end connecting valve circuit 300 of control circuit 100, for on-off circuit 300
Transmission of control signals, with being turned on or off for controlling switch circuit 300；The output end connecting valve circuit 300 of integrated circuit 200
Signal input part, for transmitting at least shift LD signal all the way to on-off circuit 300；The output end of on-off circuit 300 connects
Display panel 400 is connect, for when control signal controlling switch circuit 300 turns on, the output end of on-off circuit 300 will at least one
Road shift LD signal is transmitted to display panel 400, to drive display panel 400.
On-off circuit 300 is set to include at least one first switch 310, each first switch 310 corresponds to move all the way respectively
Position deposit signal, multiple first switches 310 and multichannel shift LD signal, which correspond, to be transmitted, multiple first switches 310 also with
Control signal corresponds transmission.The signal input part of first switch 310 is connected with IC 200, receives integrated circuit
The shift LD signal all the way of IC200 transmission；The control signal of first switch 310 is connected with control circuit 100, receives control
What circuit 100 transmitted is used to control the control signal whether the shift LD signal exports；The output end of first switch 310 is with showing
Show that panel 400 connects.Control circuit 100 controls each first switch 310 to be turned on or off respectively, when control circuit 100 control to
When a few first switch 310 turns on, at least one first switch 310 inputs a signal into the shift LD signal transmission that end receives
To display panel 400, to drive display panel 400 according to shift LD signal.
It is optional to set first switch 310 to include the first transistor, the reason is that transistor is used as one kind is variable to open
Close, the electric current of the voltage control output based on input, therefore transistor can be as the switch of electric current, the crystal compared with mechanical switch
The advantage of pipe is to be controlled using electric signal and switching speed is very fast, in vitro switch speed is up to 100GHz
More than.The output end of the control signal connection control circuit 100 of the first transistor, controls the first transistor to lead for receiving
Control signal that is logical or closing, the output end of the signal input part connection IC 200 of the first transistor, for receiving
To should the first transistor shift LD signal all the way, the first transistor output end connection display panel 400, for when control
When signal processed controls the first transistor conducting, the signal of shift LD all the way that the signal input part of the first transistor is received passes
Transport to display panel 400.It is P-type transistor to be preferably provided with the first transistor.The control signal that control circuit 100 exports may be controlled
Make at least one the first transistor conducting in multiple the first transistors.
As described previously for any one first switch 310, when setting first switch 310 is p-type the first transistor, that
When controlling the control signal of the p-type the first transistor to be high-level control signal of the output of control circuit 100, the high level control
Signal processed can control the p-type the first transistor to disconnect, and the output end of p-type the first transistor is hanging, not output signal；Control circuit
When controlling the control signal of the P-type transistor to be low level control signal of 100 outputs, the high-level control signal is controllable should
P-type the first transistor turns on.When p-type the first transistor turns on, the p-type the first transistor inputs a signal into end and received all the way
Shift LD signal is transmitted to display panel 400 to drive display panel 400.
As illustrated, using IC 200 to the shift LD signal that on-off circuit 300 exports as display panel all the way
Exemplified by input signal (STV), IC 200 exports a STV output end and the signal input part of corresponding first switch 310
Connection, the first switch 310 receive the STV signals that IC 200 exports, and control circuit 100 exports STV control signals
One output end is connected with the control signal of the first switch 310, and the first switch 310 receives the STV that control circuit 100 exports
Control signal, the input that display panel 400 receives STV signals are connected with the output end of the first switch 310.Control circuit
The STV control signals of 100 outputs are used to control whether STV signals are exported to display panel 400, specifically in control circuit 100
The control mode of STV control signals is provided with, control circuit 100 exports STV control signals, first switch according to the control mode
310 are turned on or off according to STV control signals, and when first switch 310 turns on, first switch 310 transmits STV signals to aobvious
Show panel 400, to drive the gate driving circuit of display panel 400.It follows that at least one is provided with control circuit 100
The control mode of road shift LD signal, and according to the control mode control corresponding at least one first switch 310 turn on or
Disconnect, to drive display panel 400.
It should be noted that the shifting that IC 200 transmits to the signal input part of on-off circuit 300 as shown in Figure 2 a
Position deposit signal is only display panel input signal needed for display panel 400, then for remaining CKV, CKH, U2D,
Transposition of partial deposit signal is directly transferred to display panel 400 by D2U, GRESET signal, IC 200.Specifically,
For the remaining shift LD signal not transmitted by hardware circuit on-off circuit 300, control is provided with IC 200
Parameter processed, for controlling whether transposition of partial deposit signal is exported to display panel 400.
It should be noted that the schematic diagram of the drive circuit for display panel as shown in Figure 2 a, on-off circuit 300 is only
With there is provided a first switch 310, i.e., only using IC 200 to the shift LD signal that on-off circuit 300 exports as
It is illustrated, but is not limited thereto exemplified by signal (display panel input STV) all the way, multiple the can be arranged as required to
One switch 310, and the displacement that the IC 200 corresponding with multiple first switches 310 exports to on-off circuit 300 are posted
Signal is deposited, is not repeated one by one herein.
On the basis of above-mentioned technical proposal, it is N-type transistor that can also be preferably provided with the first transistor, then control circuit
When the control signal of 100 outputs is high-level control signal, control circuit 100 controls the conducting of N-type the first transistor, control circuit
When the control signal of 100 outputs is low level control signal, control circuit 100 controls N-type the first transistor to disconnect.When N-type
During one transistor turns, the transistor input a signal into end receive the signal of shift LD all the way transmit to display panel 400 with
Drive display panel 400.
With reference to shown in figure 2b, for it is provided in an embodiment of the present invention another be used for display panel drive circuit signal
Figure.The technical scheme of the embodiment of the present invention is applied to control display panel to receive shift LD control signal by hardware circuit
Situation.As illustrated, the drive circuit for being used for display panel includes：Control circuit 100, on-off circuit 300 and integrated circuit
200。
Wherein, the control signal of the output end connecting valve circuit 300 of control circuit 100, for on-off circuit 300
Transmission of control signals, with being turned on or off for controlling switch circuit 300；The output end connecting valve circuit 300 of integrated circuit 200
Signal input part, for transmitting at least shift LD signal all the way to on-off circuit 300；The output end of on-off circuit 300 connects
Display panel 400 is connect, for when control signal controlling switch circuit 300 turns on, the output end of on-off circuit 300 will at least one
Road shift LD signal is transmitted to display panel 400, to drive display panel 400.
Set on-off circuit 300 to include at least one set to switch, the corresponding shift LD signal all the way of every group of switch, any one group
Switch includes a second switch 321 and one the 3rd switch 322.For any one group of switch, the signal input part of one group of switch connects
Connecing IC 200 and receive shift LD signal all the way, multichannel shift LD signal is corresponded with multigroup switch and set,
The control signal connection control circuit 100 and one control signal of reception of one group of switch, the control signal that control circuit 100 exports
Whether exported for shift LD signal corresponding to controlling by on-off circuit 300, the output end connection display surface of one group of switch
Plate 400 and to display panel 400 transmit shift LD signal.
It is N-type transistor that optional setting second switch 321 and the 3rd, which switchs 322,.For any one group of switch, second
The control signal of switch 321 and the control signal of the 3rd switch 322 connect the output end of control circuit 100 respectively, are used for
Receive same control signal, the signal input part of the signal input part of second switch 321 and the 3rd switch 322 connects integrated respectively
The output end of IC circuit 200, for receiving with shift LD signal all the way, the output end of second switch 321, the 3rd switch 322
Output end connect display panel 400 respectively, drive display panel 400 with shift LD signal all the way.
The control signal that control circuit 100 exports controls the second switch 321 and the 3rd in one group of switch to switch 322 simultaneously
Conducting ends simultaneously, when control signal controls the switch of second switch 321 and the 3rd 322 in one group of switch to simultaneously turn on,
The second switch 321 and the 3rd switch 322 transmits the same signal of shift LD all the way of reception to display panel 400.Specifically,
The control circuit 100 output controls the control signal of one group of switch whether to control shift LD signal that group switch receives
Export to the control signal of display panel 400, for different groups of switches, control circuit 100 exports corresponding control signal.
Specifically, for any one group of switch, for control circuit 100 to that should organize switch, the control signal of output is high electricity
Flat control signal or low level control signal, when the control signal for controlling the group to switch that control circuit 100 exports is high level
During control signal, the high-level control signal controls the switch of second switch 321 and the 3rd 322 in group switch to simultaneously turn on,
Group switch transmits the signal of shift LD all the way of reception to display panel 400；When the control of the output of control circuit 100 group
When the control signal of switch is low level control signal, the low level control signal controls the second switch 321 in group switch
Simultaneously switched off with the 3rd switch 322, the output end that the group switchs is hanging, does not export shift LD signal.Control circuit 100 is distinguished
Different groups of switch is controlled to export shift LD signal.
The embodiment provided for Fig. 2 b, two groups of switches are included with on-off circuit 300, respectively output display panel is swept
Retouch to enter exemplified by first group of switch of clock signal (CKV) and second group of switch of output display panel data switching signal (CKH)
Row explanation.For first group of switch, the signal input part of its second switch 321 and the 3rd switch 322 with IC 200
CKV output end connection is exported, the control signal of its second switch 321 and the 3rd switch 322 exports CKV with control signal
The output end connection of control signal, the output end of its second switch 321 and the 3rd switch 322 receive CKV with display panel 400
The scan line connection of control signal.For second group of switch, the signal input part of its second switch 321 and the 3rd switch 322 is equal
With IC 200 export CKH output end be connected, its second switch 321 and the 3rd switch 322 control signal with
The output end connection of control signal output CKH control signals, the output end of its second switch 321 and the 3rd switch 322 is with showing
Show that panel 400 receives the data wire connection of CKH control signals.
It follows that the control signal and control data wiretap of control scan line sequential are provided with control circuit 100
Control signal, control circuit 100 transmits scan line timing control signal to first group of switch, and controls first group of switch to be
No conducting, and/or data line switch control signal is transmitted to second group of switch, and control whether second group of switch turns on.
When first group of switch and/or second group of switch conduction, display panel 400 receives first group of switch and/or second group of switch transmission
Corresponding clock signal.
It should be noted that as shown in Figure 2 b for remaining STV, U2D, D2U, GRESET signal, IC 200
Transposition of partial deposit signal is directly transferred to display panel 400.Specifically, do not switched for remaining by hardware circuit
The shift LD signal that circuit 300 transmits, control parameter is provided with IC 200, for controlling the transposition of partial to post
Deposit whether signal is exported to display panel 400.
On the basis of above-mentioned technical proposal, it is p-type that can also be preferably provided with the switch of second switch 321 and the 3rd 322
Transistor.When the control signal that control circuit 100 exports is low level control signal, the low level control signal controls one group
The switch of second switch 321 and the 3rd 322 in switch simultaneously turns on, and the group, which switchs, transmits the signal of shift LD all the way of reception
To display panel 400；When the control signal that control circuit 100 exports is high-level control signal, the high-level control signal
Control the second switch 321 and the 3rd in one group of switch to switch 322 to simultaneously switch off, the output end that the group switchs is hanging, does not export
Shift LD signal.
It should be noted that the schematic diagram of the drive circuit for display panel as shown in Figure 2 b, on-off circuit 300 is only
With there is provided two groups of switches, i.e. the respectively first group of switch and output display of output display panel scan clock signal (CKV)
Illustrate, but be not limited thereto exemplified by second group of switch of panel data switching signal (CKH), can be arranged as required to
Multigroup switch, and the shift LD signal that the IC 200 corresponding with multigroup switch exports to multigroup switch, herein
Do not repeat one by one.
With reference to shown in figure 2c, for it is provided in an embodiment of the present invention another be used for display panel drive circuit signal
Figure.The technical scheme of the embodiment of the present invention is applied to control display panel to receive shift LD control signal by hardware circuit
Situation.As illustrated, the drive circuit for being used for display panel includes：Control circuit 100, on-off circuit 300 and integrated circuit
200。
Wherein, the control signal of the output end connecting valve circuit 300 of control circuit 100, for on-off circuit 300
Transmission of control signals, with being turned on or off for controlling switch circuit 300；The output end connecting valve circuit of IC 200
300 signal input part, for transmitting at least shift LD signal all the way to on-off circuit 300；The output end of on-off circuit 300
Display panel 400 is connected, for when control signal controlling switch circuit 300 turns on, the output end of on-off circuit 300 will at least
Shift LD signal is transmitted to display panel 400 all the way, to drive display panel 400.
On-off circuit 300 is set to include at least one set of switch 330, every group of switch corresponds to shift LD signal all the way, arbitrarily
One group of switch 330 includes one the 4th switch 331 and one the 5th switch 332.Optionally, for any one group of switch, the 4th switch
331 be N-type transistor, and the 5th switch 332 includes a phase inverter and P-type transistor.For any one group of switch, the 5th switch
The output end of 332 phase inverter is connected with the control signal of the transistor of the 5th switch 332, and the control of the 4th switch 331 is defeated
Enter end, the input of phase inverter of the 5th switch 332 connects the output end of control circuit 100 respectively, for receiving same control
Signal, the signal input part of the 4th switch 331, the signal input part of the 5th transistor for switching 332 connect integrated circuit respectively
200 output end, for receiving with shift LD signal all the way, the output end of the 4th switch 331, the crystal of the 5th switch 332
The output end of pipe connects display panel 400 respectively, and display panel 400 is driven with shift LD signal all the way.
The control signal that control circuit 100 exports controls the 4th switch 331 and the 5th in one group of switch to switch 332 simultaneously
Conducting ends simultaneously, when control signal controls the 4th switch 331 in one group of switch and the 5th switch 332 to simultaneously turn on,
4th switch 331 and the 5th switch 332 simultaneously transmit the signal of shift LD all the way of reception to display panel 400.
Specifically, the control signal that control circuit 100 exports is high-level control signal or low level control signal, work as control
When the control signal that circuit 100 processed exports be high-level control signal, the in the high-level control signal one group of switch of control
Four switches 331 and the 5th switch 332 simultaneously turn on, and group switch transmits the signal of shift LD all the way of reception to display panel
400；When the control signal that control circuit 100 exports is low level control signal, the low level control signal controls one group and opened
4th switch 331 in the Central Shanxi Plain and the 5th switch 332 simultaneously switch off, and the output end that the group switchs is hanging, does not export shift LD letter
Number.
As described above, increase on-off circuit 300 in the driving circuit, by the controlling switch circuit 300 of control circuit 100,
The output of corresponding displaced deposit signal is controlled with the high and low level by the control signal of each shift LD signal.
At least six groups of switches are included with on-off circuit 300, include output STV first group of switch respectively, for by opening
Powered-down road 300 drives the gate driving circuit of display panel 400, includes output CKV second group of switch, is shown for controlling
The scan line sequential of panel 400, include output CKH the 3rd group of switch, for controlling the data wire of display panel 400 to open
Close, include output U2D the 4th group of switch, for controlling scan line sequential from top to bottom, include the 5th of output D2U
Group switch, for controlling scan line sequential from top to bottom, and also include output GRESET the 6th group of switch, for resetting
The circuit of display panel 400.The signal input part of each group of switch is corresponding with shift LD signal all the way, the control of each group of switch
Input processed is corresponding with control signal, the output end of each group of switch correspond to the same input of display panel 400 all the way.
On the basis of above-mentioned technical proposal, it is P-type transistor that can also be preferably provided with the 4th switch 331, and the 5th switchs
332 include a phase inverter and N-type transistor.When the control signal that control circuit 100 exports is low level control signal, this is low
The 4th switch 331 and the 5th switch 332 in level controling signal one group of switch of control are simultaneously turned on, and the group is switched reception
Shift LD signal is transmitted to display panel 400 all the way；When the control signal that control circuit 100 exports is high-level control signal
When, the high-level control signal controls the 4th switch 331 in one group of switch and the 5th switch 332 to simultaneously switch off, group switch
Vacantly, shift LD signal is not exported.
It should be noted that for the schematic diagram of the drive circuit for display panel shown in Fig. 3, on-off circuit 300
Illustrate, but be not limited thereto exemplified by there is provided six groups of switches, any number of multigroup open can be arranged as required to
Close, and the shift LD signal that the IC 200 corresponding with multigroup switch exports to multigroup switch, herein not one by one
Repeat.
It is a kind of schematic diagram of drive circuit for display panel provided in an embodiment of the present invention with reference to shown in figure 3.This
The technical scheme of inventive embodiments is applied to the situation for controlling display panel to receive shift LD control signal by hardware circuit.
As illustrated, the drive circuit for being used for display panel includes：Control circuit 100, on-off circuit 300 and integrated circuit 200.
Wherein, the control signal of the output end connecting valve circuit 300 of control circuit 100, for on-off circuit 300
Transmission of control signals, with being turned on or off for controlling switch circuit 300；The output end connecting valve circuit 300 of integrated circuit 200
Signal input part, for transmitting at least shift LD signal all the way to on-off circuit 300；The output end of on-off circuit 300 connects
Display panel 400 is connect, for when control signal controlling switch circuit 300 turns on, the output end of on-off circuit 300 will at least one
Road shift LD signal is transmitted to display panel 400, to drive display panel 400.
Whether the signal of shift LD all the way that known control circuit 100 controls each group of switch to receive respectively is exported to display
Panel 400, therefore one group of switch corresponding with per shift LD signal all the way, control circuit 100 can export corresponding control letter
Number with control the group switch be turned on or off, with cause the group switch conducting when the signal of shift LD all the way of reception is defeated
Go out to display panel 400.It follows that be preferably provided with control circuit 100 include at least one set of parallel connection first resistor R1 and
Second resistance R2, this group first resistor R1 and second resistance R2 in parallel are used to be connected with one group of switch, for controlling all the way
Whether shift LD signal exports.
Wherein, first resistor R1 first end electrical connection high level signal end VGH, the second end electrical connection on-off circuit 300
Control signal, second resistance R2 first end electrical connection low level signal end VGL, the second end electrical connection on-off circuit 300
Control signal.When first resistor R1 short circuits, second resistance R2 open circuits, control of the control circuit 100 to on-off circuit 300
Input transmits the control signal of high level；When first resistor R1 open circuits, second resistance R2 short circuits, control circuit 100 is to opening
The control signal on powered-down road 300 transmits low level control signal.
Being preferably provided with on-off circuit 300 includes at least one set of switch, and every group of switch corresponds to shift LD signal all the way, arbitrarily
One group of switch includes one the 4th switch 331 and one the 5th switch 332.It is for any one group of switch, the 4th switch 331 optionally
N-type transistor, the 5th switch 332 include a phase inverter and P-type transistor.For any one group of switch, the 5th switch 332 it is anti-
The output end of phase device be connected with the control signal of transistor of the 5th switch 332, the 4th switch 331 control signal, the
The input of the phase inverter of five switches 332 connects the output end of control circuit 100 respectively, for receiving same control signal, the
The signal input part of four switches 331, the signal input part of the 5th transistor for switching 332 connect the defeated of integrated circuit 200 respectively
Go out end, for receiving with shift LD signal all the way, the output end of the 4th switch 331, the 5th switch 332 transistor output
End connects display panel 400 respectively, and display panel 400 is driven with shift LD signal all the way.On-off circuit 300 can also be set
Other forms are set to, do not do excessive example herein.
For shift LD signal all the way and corresponding one group of switch and corresponding control signal, when the corresponding first electricity
When hindering R1 short circuits, second resistance R2 open circuits, the control of the 4th switch 331 and the 5th switch 332 that control circuit 100 switchs to the group
Input processed transmits the control signal of high level, and the 4th switch 331 of group switch and the 5th switch 332 simultaneously turn on, that
The output end of 4th switch 331 and the 5th switch 332 exports the shift LD signal all the way of reception.When the corresponding first electricity
When hindering R1 open circuits, second resistance R2 short circuits, the control of the 4th switch 331 and the 5th switch 332 that control circuit 100 switchs to the group
Input processed transmits low level control signal, and the 4th switch 331 of group switch and the 5th switch 332 simultaneously switch off, and the 4th
The output end of switch 331 is hanging, the output end of the 5th switch 332 is hanging.Thus control circuit 100 is in parallel by any one group
First resistor R1 and second resistance R2 realizes the output control to corresponding shift LD signal all the way.
As noted previously, as first resistor R1 and second resistance R2 need that output is applied and can not changed as conduction resistance
The high and low of level is held, therefore first resistor R1 and second resistance R2 resistance are all close to 0 Ω.
The embodiment of the present invention also provides a kind of display device, and the display device includes any one described in example is performed as described above
Drive circuit.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (12)
- A kind of 1. drive circuit for display panel, it is characterised in that including：Control circuit, on-off circuit and integrated circuit, Wherein：The output end of the control circuit connects the control signal of the on-off circuit, is controlled for being transmitted to the on-off circuit Signal processed, to control being turned on or off for the on-off circuit；The output end of the integrated circuit connects the signal input part of the on-off circuit, for the on-off circuit transmit to Few shift LD signal all the way；The output end of the on-off circuit connects the display panel, for controlling the on-off circuit to lead when the control signal When logical, the on-off circuit output end will at least the shift LD signal be transmitted to the display panel all the way, it is described to open Powered-down road includes at least one transistor switch, and the control signal of the transistor switch electrically connects the control circuit, the crystalline substance The signal input part of body pipe switch electrically connects the integrated circuit, and the output end of the transistor switch electrically connects the display surface Plate.
- 2. drive circuit according to claim 1, it is characterised in that the control circuit is flexible print circuit board.
- 3. drive circuit according to claim 1, it is characterised in that the shift LD signal comprises at least display panel Input signal, display panel scanning sequence signal, display panel data switch signal, display panel forward scan signal, display One kind in panel reverse scan signal, display panel reset signal.
- 4. drive circuit according to claim 3, it is characterised in that the on-off circuit is opened including at least one first Close, each first switch corresponds to shift LD signal described all the way respectively.
- 5. drive circuit according to claim 4, it is characterised in that the first switch includes the first transistor；The control signal of the first transistor connects the output end of the control circuit, for receiving the control signal, The signal input part of the first transistor connects the output end of the integrated circuit, for receiving the shift LD letter all the way Number, the output end of the first transistor connects the display panel, for controlling the first crystal when the control signal When pipe turns on, the shift LD signal described all the way that the signal input part of the first transistor receives is transmitted to the display Panel.
- 6. drive circuit according to claim 5, it is characterised in that the first transistor is P-type transistor；Or The first transistor is N-type transistor.
- 7. drive circuit according to claim 3, it is characterised in that the on-off circuit includes at least one set of switch, often The corresponding shift LD signal described all the way of the group switch, switch described in any one group include a second switch and one the 3rd and opened Close.
- 8. drive circuit according to claim 7, it is characterised in that the second switch and it is described 3rd switch be N Transistor npn npn；Or the second switch and the 3rd switch are P-type transistor；For being switched described in any one group,The control signal of the second switch, the control signal of the 3rd switch connect the defeated of the control circuit respectively Go out end, for receiving the control signal, the signal input part of the second switch, the signal input part point of the 3rd switch The output end of the integrated circuit is not connected, for receiving the shift LD signal all the way, the output end of the second switch, The output end of 3rd switch connects the display panel respectively；The control signal of the control circuit output controls the second switch and the 3rd in one group of switch to switch simultaneously Conducting ends simultaneously, when simultaneously the second switch in the control signal one group of switch of control and the 3rd switch are led When logical, the second switch and the 3rd switch simultaneously transmit the shift LD signal described all the way of reception to the display panel.
- 9. drive circuit according to claim 3, it is characterised in that the on-off circuit includes at least one set of switch, often The corresponding shift LD signal described all the way of the group switch, switch described in any one group include one the 4th switch and one the 5th and opened Close.
- 10. drive circuit according to claim 9, it is characterised in that for switch described in any one group, the described 4th opens Close includes a phase inverter and P-type transistor for N-type transistor, the 5th switch；Or the 4th switch is P-type crystal Pipe, the 5th switch include a phase inverter and N-type transistor；For switch described in any one group, output end and the transistor of the described 5th switch of the phase inverter of the 5th switch Control signal connects,The control signal of 4th switch, the input of the described 5th phase inverter switched connect the control circuit respectively Output end, for receiving the control signal, the signal input part of the 4th switch, the transistor of the 5th switch Signal input part connects the output end of the integrated circuit respectively, for receiving the shift LD signal all the way, the described 4th The output end of switch, the output end of the described 5th transistor switched connect the display panel respectively；The control signal of the control circuit output controls the 4th switch and the 5th in one group of switch to switch simultaneously Conducting ends simultaneously, when simultaneously the control signal controls the 4th switch and the described 5th switch in one group of switch to lead When logical, the 4th switch and the 5th switch simultaneously transmit the shift LD signal described all the way of reception to the display panel.
- 11. according to the drive circuit described in claim any one of 1-10, it is characterised in that the control circuit includes parallel connection First resistor and second resistance；First end electrical connection high level signal end, the second end of the first resistor electrically connect the control input of the on-off circuit End, first end electrical connection low level signal end, the second end of the second resistance electrically connect the control input of the on-off circuit End；When the first resistor is short-circuit, the second resistance open circuit when, control of the control circuit to the on-off circuit is defeated Enter the control signal of end transmission high level；When the first resistor is breaking, the second resistance short circuit when, control of the control circuit to the on-off circuit is defeated Enter end and transmit low level control signal.
- 12. a kind of display device, it is characterised in that including the drive circuit as described in claim any one of 1-11.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105976759B (en) * | 2016-07-29 | 2019-09-06 | 京东方科技集团股份有限公司 | Driving circuit, display panel, display equipment and driving method |
| CN108630155B (en) * | 2017-03-24 | 2019-12-31 | 合肥鑫晟光电科技有限公司 | Reset circuit, shift register unit, gate drive circuit, display device and drive method |
| CN107103889B (en) * | 2017-06-29 | 2019-08-06 | 惠科股份有限公司 | The driving method and display device of a kind of driving circuit of display panel, driving circuit |
| CN109389953A (en) | 2017-08-08 | 2019-02-26 | 京东方科技集团股份有限公司 | Scan drive circuit and its driving method, display device |
| CN107610664B (en) | 2017-09-25 | 2019-08-13 | 惠科股份有限公司 | A kind of circuit board and display |
| CN109326254B (en) * | 2018-11-07 | 2020-09-08 | 深圳市华星光电技术有限公司 | Output signal control circuit and control method |
| CN109697966A (en) * | 2019-02-28 | 2019-04-30 | 上海天马微电子有限公司 | A kind of array substrate, display panel and its driving method |
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