CN110164346A - Repair system and repair method for driving circuit - Google Patents
Repair system and repair method for driving circuit Download PDFInfo
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- CN110164346A CN110164346A CN201910564924.7A CN201910564924A CN110164346A CN 110164346 A CN110164346 A CN 110164346A CN 201910564924 A CN201910564924 A CN 201910564924A CN 110164346 A CN110164346 A CN 110164346A
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- 230000008439 repair process Effects 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002159 abnormal effect Effects 0.000 claims abstract description 116
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 239000010409 thin film Substances 0.000 claims description 41
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000000875 corresponding effect Effects 0.000 description 34
- 238000010586 diagram Methods 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 9
- 238000005067 remediation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000036632 reaction speed Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a repair system and a repair method of a drive circuit, the repair system comprises a drive circuit, a detection circuit and a repair circuit, whether an output signal of the drive circuit is abnormal is detected through the detection circuit, when the abnormal is detected, the position of an abnormal drive module is directly and quickly judged and a repair signal is generated, so that the repair circuit quickly disconnects the abnormal drive module from a drive module to be input corresponding to the next stage according to the repair signal and connects a normal drive module at the same stage with the drive module to be input, thereby avoiding the normal drive module from being interfered and quickly transmitting the repair signal, improving the repair efficiency and keeping the display picture normal.
Description
Technical field
The present invention relates to field of liquid crystal display, more particularly to the repair system and restorative procedure of a kind of driving circuit.
Background technique
With the continuous development of display technology, design, artistry and visual experience side of the people to display device
The requirement in face is also higher and higher.For example the currently prevailing narrow frame shows product, the frame of traditional display panel is further
Constriction reaches more advanced visual experience and product design aesthetic feeling with the area of further expansion display area.GOA
(Gate Driver on Array, the driving of array substrate row) technology has reduction production cost and realizes panel narrow frame design
The advantages of, it is used by a variety of displays.
However, being easy to cause signal that can not transmit when GOA driving circuit is applied to middle large size product and generates bad
And picture exception is led to the problem of, while largely effecting on piece yield.
Summary of the invention
Based on this, it is necessary to provide one kind can be realized driving circuit there are it is bad when repair circuit so that signal is normal
The repair system and restorative procedure of the driving circuit of transmitting.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
A kind of repair system of driving circuit, comprising:
At least two-stage drive circuit, the driving circuit is for driving scan line；Wherein, every stage drive circuit includes at least
Two drive modules at the same level, the drive module of adjacent two-stage correspond, and when the output signal of grade drive module is as adjacent
Next stage corresponds to the enabling signal of drive module；
Detection circuit connects the driving circuit, and the output signal for detecting each drive module whether there is exception,
And abnormal drive module and normal driving module are distinguished when having abnormal, generate repair signal；
Circuit is repaired, the detection circuit and the driving circuit are connected, for disconnecting abnormal according to the repair signal
The connection of drive module drive module to be entered corresponding with next stage is also turned on normal driving module at the same level with described to defeated
Enter the connection of drive module.
The detection circuit includes: in one of the embodiments,
Acquisition unit connects the drive module, for obtaining the real time output of each drive module；
Comparing unit connects the acquisition unit, preset standard output signal is used for, according to real time output and standard
Output signal judges whether there is exception；
Discrimination unit connects the comparing unit, for depositing when abnormal in real time output, distinguishes abnormal driving mould
Block and normal driving module generate repair signal.
The output signal includes driving signal and control signal, the drive module packet in one of the embodiments,
It includes:
First output unit, for receiving clock signal, output drive signal to corresponding scan line in conducting；
It is single to output control signals to adjacent next stage input for receiving clock signal in conducting for second output unit
Member；
Input unit is separately connected first output unit and second output unit, for receiving adjacent upper one
The control signal of grade the second output unit output controls first output unit and described second defeated as enabling signal respectively
The turn-on time of unit out；
Control unit is separately connected the input unit, first output unit and second output unit, uses
In the deadline for controlling first output unit and second output unit respectively.
The reparation circuit includes: in one of the embodiments,
Control unit is cut off, the second output unit and the adjacent next stage input for being separately connected abnormal drive module are single
Member, for disconnecting the second output unit and the adjacent next stage input unit of abnormal drive module according to the repair signal
Connection；
Control unit is connected, the first output unit and the adjacent next stage input for being separately connected normal driving module are single
Member, for connecting the first output unit and the adjacent next stage input unit of normal driving module according to the repair signal
Connection.
The input unit is also used to receive adjacent the first output unit of upper level output in one of the embodiments,
Driving signal is as power supply signal；
The reparation circuit includes:
Cut off control unit, be separately connected the second output unit of abnormal drive module, abnormal drive module it is first defeated
Unit and the adjacent next stage input unit out, for disconnecting the second defeated of abnormal drive module according to the repair signal
The connection of unit and the adjacent next stage input unit out, disconnect the first output unit of abnormal drive module with it is described adjacent
The connection of next stage input unit；
Control unit is connected, the first output unit and the adjacent next stage for being separately connected normal driving module input
Unit, the first output unit and the adjacent next stage for connecting normal driving module according to the repair signal input single
The connection of member.
First output unit includes: in one of the embodiments,
Thin film transistor (TFT) M1 and capacitor C1；
The grid of the thin film transistor (TFT) M1 is separately connected the first end of the capacitor C1, the control terminal of the input unit
And the control terminal of described control unit, the drain electrode input clock signal of the thin film transistor (TFT) M1, the thin film transistor (TFT) M1
Source electrode and the second end of the capacitor C1 be connected to corresponding scan line altogether.
Second output unit includes: in one of the embodiments,
Thin film transistor (TFT) M2；
The grid of the thin film transistor (TFT) M2 is separately connected the control of the control terminal and described control unit of the input unit
End processed, the drain electrode input clock signal of the thin film transistor (TFT) M2, the thin film transistor (TFT) M2 source electrode connection it is described it is adjacent under
Level-one input unit.
A kind of repair system of driving circuit, comprising:
At least two-stage drive circuit, the driving circuit is for driving scan line；Wherein, every stage drive circuit includes at least
Two drive modules at the same level, the drive module of adjacent two-stage correspond, and when the output signal of grade drive module is as adjacent
Next stage corresponds to the enabling signal of drive module；
Detection circuit connects the driving circuit, and the output signal for detecting each drive module whether there is exception,
And abnormal drive module and normal driving module are distinguished when having abnormal, generate repair signal；
Circuit is repaired, the detection circuit and the driving circuit are connected, for disconnecting abnormal according to the repair signal
The connection of drive module drive module to be entered corresponding with next stage is also turned on normal driving module at the same level with described to defeated
Enter the connection of drive module；
Wherein, the detection circuit includes:
Acquisition unit connects the drive module, for obtaining the real time output of each drive module；
Comparing unit connects the acquisition unit, preset standard output signal is used for, according to real time output and standard
Output signal judges whether there is exception；
Discrimination unit connects the comparing unit, for depositing when abnormal in real time output, distinguishes abnormal driving mould
Block and normal driving module generate repair signal；
Wherein, the output signal includes driving signal and control signal, and the drive module includes:
First output unit, for receiving clock signal, output drive signal to corresponding scan line in conducting；
It is single to output control signals to adjacent next stage input for receiving clock signal in conducting for second output unit
Member；
Input unit is separately connected first output unit and second output unit, for receiving adjacent upper one
The control signal of grade the second output unit output, controls the conducting of first output unit and second output unit respectively
Time；
Control unit is separately connected the input unit, first output unit and second output unit, uses
In the deadline for controlling first output unit and second output unit respectively.
A kind of restorative procedure of driving circuit, comprising:
At least two-stage drive circuit is provided, the driving circuit is for driving scan line；Wherein, every stage drive circuit includes
At least two drive modules at the same level, the drive module of adjacent two-stage corresponds, and works as the output signal conduct of grade drive module
Adjacent next stage corresponds to the enabling signal of drive module；
The output signal of each drive module is detected with the presence or absence of exception, and distinguishes abnormal drive module when having abnormal
With normal driving module, repair signal is generated；
According to the repair signal, the connection of abnormal drive module drive module to be entered corresponding with next stage is disconnected,
It is also turned on the connection of normal driving module at the same level Yu the drive module to be entered.
The output signal of each drive module of detection whether there is abnormal step in one of the embodiments,
Include:
Obtain the real time output of each drive module；
Preset standard output signal judges whether there is exception according to real time output and standard output signals；
It is deposited when abnormal in real time output, distinguishes abnormal drive module and normal driving module, generate repair signal.
Above-mentioned repair system, including driving circuit, detection circuit and reparation circuit, pass through detection circuit and detect driving electricity
The output signal on road deposits when detection with the presence or absence of exception and directly quickly determines abnormal drive module present position and life when abnormal
At repair signal, reparation circuit is made quickly to disconnect the driving to be entered corresponding with next stage of abnormal drive module according to repair signal
The connection of module, connects the connection of at the same level normal driving module and drive module to be entered, thus avoid normal driving module by
To the transmitting for interfering and repairing rapidly signal, remediation efficiency is improved, keeps display picture normal.
Detailed description of the invention
Fig. 1 is the system construction drawing of the repair system of driving circuit in an embodiment；
Fig. 2 is the system construction drawing of 1 repair system of corresponding diagram in an embodiment；
Fig. 3 is the structure chart that driving circuit does not deposit driving circuit when abnormal in an embodiment；
Fig. 4 is the structure chart that driving circuit deposits the driving circuit after repairing when abnormal in an embodiment；
Fig. 5 is that there are the specific structure panel figures of the driving circuit of foreign matter in an embodiment；
Fig. 6 is the simulation schematic diagram of abnormal output signal and standard output signals in an embodiment；
Fig. 7 is the concrete structure diagram of drive module in an embodiment；
Fig. 8 is the concrete structure diagram of the driving circuit of corresponding diagram 3；
Fig. 9 is the concrete structure diagram of the driving circuit of corresponding diagram 4；
Figure 10 is the concrete structure diagram of detection circuit in an embodiment；
Figure 11 is the circuit diagram of 7 driving circuit of corresponding diagram；
Figure 12 is the circuit diagram of input unit in an embodiment；
Figure 13 is the circuit diagram of input unit in another embodiment；
Figure 14 is the circuit diagram of the input unit after repairing in an embodiment；
Figure 15 is the flow chart of the restorative procedure of driving circuit in an embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give alternative embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more related
Listed item any and all combinations.
It is the system construction drawing of the repair system of driving circuit in an embodiment referring to Fig. 1, Fig. 1.
In the present embodiment, which includes that at least (Fig. 1 is to include that two-stage drive circuit is for two-stage drive circuit 10
Example, be denoted as N stage drive circuit 101 and N+1 stage drive circuit 102 respectively), detection circuit 20 and repair circuit 30.
At least two-stage drive circuit 10, driving circuit 10 is for driving scan line；Wherein, every stage drive circuit 10 includes extremely
Few two drive modules at the same level, the drive module of adjacent two-stage correspond, and when the output signal of grade drive module is as phase
Adjacent next stage corresponds to the enabling signal of drive module.
Detection circuit 20 connects driving circuit 10, and the output signal for detecting each drive module whether there is exception,
And abnormal drive module and normal driving module are distinguished when having abnormal, generate repair signal.
Circuit 30, connection detection circuit 20 and driving circuit 10 are repaired, for disconnecting abnormal driving mould according to repair signal
The connection of block drive module to be entered corresponding with next stage, is also turned on normal driving module at the same level and drive module to be entered
Connection.
In the present embodiment, repair system includes cascade multiple driving circuits 10, for driving scan line.Every grade of driving
Circuit 10 includes that (referring to fig. 2, Fig. 2 is by taking two drive modules at the same level as an example, and two driving moulds at least two at the same level drive modules
Block is located on the non-display area of viewing area two sides, is symmetrical arranged, is denoted as N grades of drive modules 1011, N grades of drive modules
1012, N+1 grades of drive modules 1021 and N+1 grades of drive modules 1022.Detection circuit is not shown in Fig. 2), each drive module
Output signal export to corresponding scan line, such as N grades of drive modules 1011 and N grades of drive modules 1012 respectively drive it is corresponding
N grades of scan lines (both sides that two N grades of scan line is located at display area).The drive module of adjacent two-stage corresponds (N grades
Drive module 1011 is corresponding with N+1 grades of drive modules 1021).
Specifically, it is not deposited when abnormal in driving circuit, referring to Fig. 3, (driving circuit is not deposited when abnormal, is repaired
Circuit 30 maintains current action, this figure, which is ignored, repairs circuit 30), when the output signal of grade drive module is as adjacent next stage pair
Answer enabling signal (starting letter of the output signal of N grades of drive modules 1011 as N+1 grades of drive modules 1021 of drive module
Number).To, it is not deposited when abnormal in driving circuit, the corresponding scan line of drive module driving of every level-one, and every level-one
The output signal of drive module corresponds to the enabling signal of drive module as adjacent next stage, to trigger adjacent next stage driving mould
Block drives next horizontal scanning line.
Specifically, it is deposited when abnormal in driving circuit, referring to Fig. 4, (N grades of drive modules 1011 are abnormal driving mould in figure
Block, " X " number representative are cut off by reparation circuit 30, and " √ " representative is connected by reparation circuit 30), abnormal drive module and next stage pair
The connection for the drive module to be entered answered disconnects, and (N grades of drives are connected in the connection of normal driving module at the same level and drive module to be entered
Dynamic model block 1011 and the connection of N+1 grade drive modules 1021 disconnect, N grades of drive modules 1021 and N+1 grades of drive modules 1021
Connection is connected).To, the transmitting of signal between different stage drive circuits is kept while direct cutting abnormal drive module,
Keep display picture normal.
In the present embodiment, detection circuit 20 connects each drive module of driving circuit, for detecting each driving mould
The output signal of block with the presence or absence of exception, and when having abnormal, repair by the abnormal drive module of differentiation and normal driving module, generation
Complex signal.Wherein, repair signal refers to the output of detection circuit 20 to the signal for repairing circuit 30, so as to repair circuit 30 according to repairing
Complex signal executes corresponding actions.Specifically, repair signal includes trigger signal, and abnormal drive module and normal driving module
Location information.
Wherein, output signal, which exists, abnormal be usually foreign matter by generating in technical process and short, breaking problem is caused to make
At (such as shown in Fig. 5, in a certain section of circuit of drive module, since the source-drain electrode A1 of device due to conductive foreign matter B1 and is led
Electric foreign matter B2 generates short circuit, and wherein A2 is the grid and semiconductor regions of device), make can not normally working for drive module,
And these foreign matters some can clearly find specific location, but some can not find abnormal occurrence cause, cause current drive module
The degree of difficulty of reparation increases.
Also, when drive module is symmetricly set on viewing area two sides, if the output signal of side exception drive module
Handle not in time, it would be possible to influence opposite side normal driving module (referring to Fig. 6, Fig. 6 be this implementation to unilateral drive module and when
The analog waveform obtained when clock signal shorts, wherein waveform a is standard output signals waveform, and waveform b is abnormal output signal wave
Shape, waveform c are normal drive module since opposite side exception drive module cuts off the abnormal output letter for being disturbed and exporting not in time
Number).And the present embodiment directly carries out detection judgement to output signal by detection circuit 20, does not need to spend a lot of time and determines
Device position locating for abnormal point directly quickly determines that abnormal drive module present position is existed side by side and is repaired even if reparation circuit
It is multiple, abnormal drive module can be quickly cut off, avoids normal driving module from being interfered and repairs the transmitting of signal rapidly, is improved
Remediation efficiency.
In one embodiment, detection circuit 20 can acquire real time output, by comparing real time output and mark
Quasi- output signal judges whether there is exception.For example, judging the output when real time output is not equal to standard output signals
There is exception in signal, therefore, it is determined that the corresponding drive module is abnormal drive module, generate repair signal.It is real-time by acquiring
Output signal judges, and can accurately be repaired to abnormal circuit with express delivery, improves repairing efficiency.
In another embodiment, detection circuit 20 can be by acquiring the normal alternation for showing picture and abnormal show picture
Point determines output signal with the presence or absence of abnormal.When collecting the alternation point of normal display picture and abnormal show picture, determine
The corresponding drive module of alternation point is abnormal drive module, generates repair signal.
In the present embodiment, 30 connection detection circuit 20 of circuit and driving circuit 10 are repaired, is not receiving repair signal
When, keep current action；When receiving repair signal, then abnormal drive module and next stage are quickly disconnected according to repair signal
The connection of corresponding drive module to be entered is also turned on the connection of normal driving module and drive module to be entered at the same level, from
And cut off abnormal drive module, avoid abnormal output signal from influencing the output of normal driving module, while keeping signal just
Often transmitting makes to show that picture keeps normal display state.
In one embodiment, its function for cutting off circuit and connecting circuit can be realized by switch block by repairing circuit 30
Energy.
In one embodiment, repairing circuit 30 can realize that it cuts off circuit with the reparation of picture element laser or other special energy
With the function of connecting circuit.Such as abnormal signal line is cut off or connected by radium-shine (energy of laser), it connects again in this way
Logical signal wire will not occupy too many space layout, it is also possible that repairing simpler.
Above-mentioned repair system, including driving circuit, detection circuit and reparation circuit, pass through detection circuit and detect driving electricity
The output signal on road deposits when detection with the presence or absence of exception and directly quickly determines abnormal drive module present position and life when abnormal
At repair signal, reparation circuit is made quickly to disconnect the driving to be entered corresponding with next stage of abnormal drive module according to repair signal
The connection of module, connects the connection of at the same level normal driving module and drive module to be entered, thus avoid normal driving module by
To the transmitting for interfering and repairing rapidly signal, remediation efficiency is improved, keeps display picture normal.
It is the structure chart of drive module in an embodiment referring to Fig. 7, Fig. 7.
In the present embodiment, the output signal of drive module includes driving signal and control signal.Wherein, driving signal is defeated
Out to corresponding scan line so that TFT (Thin Film Transistor, thin film field-effect crystal all in the scan line
Pipe) it opens；Control signal exports to adjacent next stage and corresponds to drive module driven to trigger adjacent next stage as enabling signal
Dynamic model BOB(beginning of block) executes movement.When driving circuit is deposited when abnormal, such as a certain drive module of the same level is deposited when abnormal, then the same level
The driving signal of another normal driving module believes the starting as the corresponding adjacent next stage drive module of abnormal drive module
Number, start to execute movement to trigger adjacent next stage drive module.
In the present embodiment, drive module 1021 includes the first output unit 1021a, the second output unit 1021b, input
Unit 1021c and control unit 1021d (by taking a drive module in N+1 stage drive circuit as an example).
First output unit 1021a, for receiving clock signal, output drive signal to corresponding scanning in conducting
Line.
Second output unit 1021b exports the control of adjacent next stage input unit for receiving clock signal in conducting
Signal processed.
Input unit 1021c is separately connected the first output unit 1021a and the second output unit 1021b, for receiving phase
The control signal of adjacent the second output unit of upper level output controls the first output unit 1021a and the as enabling signal respectively
The turn-on time of two output unit 1021b.Specifically, input unit 1021c by control respectively the first output unit 1021a and
The opening time of second output unit 1021b internal components and control the first output unit 1021a and the second output unit 1021b
Whole turn-on time.
Wherein, input unit 1021c can also receive the driving signal of adjacent the first output unit of upper level output simultaneously
As power supply signal, or directly to control signal as enabling signal and power supply signal.Alternatively, input unit 1021c can also
To be directly accessed the power supply signal of external circuit offer.Wherein, the power supply signal for being directly accessed external circuit offer can be significantly
Improve reaction speed and driving capability.
Control unit 1021d is separately connected input unit 1021c, the first output unit 1021a and the second output unit
1021b, for controlling the deadline of the first output unit 1021a and the second output unit 1021b respectively.Specifically, it controls
Output signal of the unit 1021d by exporting input unit 1021c in first time closes the letter down for low potential
Number, to control the deadline of the first output unit 1021a and the second output unit 1021b respectively.
Specifically, it is not deposited when abnormal in driving circuit, refers to Fig. 8, the output of the first output unit 1011a and first
Unit 1012a is respectively to corresponding N grades of scan line output drive signal, and the second output unit 1011b is to input unit
1021c output control signal.To, the corresponding scan line of drive module driving of every level-one, and the drive module of every level-one
Control signal corresponds to the enabling signal of drive module as adjacent next stage, next to trigger adjacent next stage drive module driving
Horizontal scanning line.
Specifically, it is deposited when abnormal in driving circuit, referring to Fig. 9, (N grades of drive modules 1011 are abnormal driving mould in figure
Block, " X " number representative are cut off by reparation circuit 30), after repairing, the first output unit 1011a and the second output unit 1011b
Stop output signal, the first output unit 1012a is exported to each N grades of scan line output drive signal, and to input unit 1021c
Driving signal is as enabling signal.To the corresponding scan line of the same level normal driving module drive itself and abnormal drive module
Corresponding scan line, and the driving signal of the same level normal driving module corresponds to the starting letter of drive module as adjacent next stage
Number, next horizontal scanning line is driven to trigger adjacent next stage drive module, realizes the normal transmitting of signal, so that display picture is just
Often display.
It is the concrete structure diagram of detection circuit in an embodiment referring to Figure 10, Figure 10.
In the present embodiment, detection circuit 20 includes acquisition unit 201, comparing unit 202 and discrimination unit 203.
Acquisition unit connects drive module, for obtaining the real time output of each drive module.
Comparing unit connects acquisition unit, preset standard output signal is used for, according to real time output and standard output
Signal judges whether there is exception.
Discrimination unit connects comparing unit, for being deposited when abnormal in real time output, distinguish abnormal drive module and
Normal driving module generates repair signal.
In one embodiment, output signal can be voltage signal or current signal, and acquisition unit can be voltage inspection
Device or current detector are surveyed, is also possible to that the resistance device etc. of voltage value or current value can be obtained.Comparing unit can be
Comparator, an input terminal of comparator input real-time voltage output valve, and another input terminal inputs standard voltage value, thus comparator
Judge output signal with the presence or absence of abnormal according to real-time voltage output valve and standard voltage value.Discrimination unit can handle device,
Real time output is deposited when abnormal, is distinguished abnormal drive module and normal driving module, is generated repair signal.
The present embodiment additionally provides the specific structure of the reparation circuit of an embodiment.
In the present embodiment, repair circuit include cutting control unit with connect control unit.
Control unit is cut off, the second output unit and adjacent next stage input unit of abnormal drive module are separately connected,
For disconnecting the connection of the second output unit and adjacent next stage input unit of abnormal drive module according to repair signal.Pass through
Control unit is cut off, to realize the cutting function for repairing circuit.
In one embodiment, cutting control unit includes controller and normally closed switch, when controller receives repair signal
When, control normally closed switch disconnects the connection of the second output unit and adjacent next stage input unit of abnormal drive module.
In another embodiment, cutting control unit also may include controller and swash with the radium-shine of cutting circuit function
Optical assembly controls the second output list that radium-shine laser module cuts off abnormal drive module when controller receives repair signal
First connection with adjacent next stage input unit.
Control unit is connected, the first output unit and adjacent next stage input unit of normal driving module are separately connected,
For connecting the connection of the first output unit and adjacent next stage input unit of normal driving module according to repair signal.
In one embodiment, connecting control unit includes controller and normal open switch, when controller receives repair signal
When, control normal open switch closure connects the connection of the first output unit and adjacent next stage input unit of normal driving module.
In another embodiment, cutting control unit also may include controller and with connection line function it is radium-shine swash
Optical assembly controls the second output list that radium-shine laser module connects normal driving module when controller receives repair signal
First connection with adjacent next stage input unit.
Wherein, it when input unit is using adjacent upper level the first output unit driving signal as power supply signal, then cuts off
Connection of the control unit also with the first output unit of abnormal drive module, to disconnect abnormal drive module according to repair signal
The connection of first output unit and adjacent next stage input unit, to solve the first output unit and the second output unit simultaneously
The problem of exception causes signal that can not transmit.
Referring to the circuit diagram that Figure 11, Figure 11 are driving circuit in above-described embodiment (to be located at the N+1 on the left of viewing area
For grade drive module 1021).
In the present embodiment, the first output unit 1021a includes thin film transistor (TFT) M1 and capacitor C1.
The grid of thin film transistor (TFT) M1 is separately connected the first end of capacitor C1, the control terminal and control of input unit 1021c
The control terminal of unit 1021d processed, the source electrode and capacitor of drain electrode the input clock signal CK, thin film transistor (TFT) M1 of thin film transistor (TFT) M1
The second end of C1 is connected to corresponding scan line altogether.To which the first output unit 1021a is defeated by thin film transistor (TFT) M1 and capacitor C1
Driving signal G outN+1-L。
In the present embodiment, the second output unit 1021b includes thin film transistor (TFT) M2.
The grid of thin film transistor (TFT) M2 is separately connected the control terminal of input unit 1021c and the control of control unit 1021d
The source electrode at end, drain electrode the input clock signal CK, thin film transistor (TFT) M2 of thin film transistor (TFT) M2 connects adjacent next stage input unit.
To which the second output unit 1021b passes through thin film transistor (TFT) M2 output control signal FN+1-L。
In the present embodiment, input unit 1021c includes thin film transistor (TFT) M3.
Driving circuit without it is abnormal when, it is second defeated to correspond to drive module for the grid access upper level of thin film transistor (TFT) M3
The control signal F of unit output outN-LAs enabling signal.The drain electrode of thin film transistor (TFT) M3 can access the corresponding driving of upper level
The driving signal G of first output unit of moduleN-LIt, can also directly and thin film transistor (TFT) as power supply signal (referring to Figure 11)
The grid of M3 is connected (referring to Figure 12), or can also be directly accessed external power supply Vdd as power supply signal (referring to Figure 13).
The controlled end of the source electrode of thin film transistor (TFT) M3 and the first output unit 1021a, the controlled end of the second output unit 1021b and control
The control terminal of unit 1021d processed connects altogether, exports QN+1Signal.To which input unit 1021c receives control by thin film transistor (TFT) M3
Signal FN-LAnd power supply signal, start the control to the first output unit 1021a and the second output unit 1021b opening time.
It is deposited when abnormal in driving circuit, after repairing, the grid of thin film transistor (TFT) M3 and drain electrode access upper level
The driving signal G of the first output unit output of normal driving moduleN-R, i.e. enabling signal and power supply signal is driving signal
GN-R(referring to Figure 14, Figure 14 is by taking N grades of 1011 exceptions of drive module as an example, driving signal GN-RBy normal N grades of drive module 1012
Output).
In the present embodiment, control unit 1021d includes multiple thin film transistor (TFT)s.
In one embodiment, control unit 1021d include thin film transistor (TFT) M4, thin film transistor (TFT) M5, thin film transistor (TFT) M6,
Thin film transistor (TFT) M7 and other one or more thin-film transistor components, specific connection relationship referring to Figure 11.
It is the flow chart of the restorative procedure of driving circuit in an embodiment referring to Figure 15, Figure 15.
In the present embodiment, restorative procedure includes step S101, S102 and S103.Details are as follows:
Step S101 provides at least two-stage drive circuit, and driving circuit is for driving scan line.Wherein, every grade of driving electricity
Road includes at least two drive modules at the same level, and the drive module of adjacent two-stage corresponds, and when the output of grade drive module is believed
The enabling signal of drive module number is corresponded to as adjacent next stage.
Wherein, the specific descriptions of driving circuit are referring to the associated description in above-described embodiment about driving circuit, herein not
It repeats again.
Step S102 detects the output signal of each drive module with the presence or absence of abnormal, and distinguishes when having abnormal different
Normal drive module and normal driving module, generate repair signal.
In the present embodiment, step S102 is executed by the detection circuit in above-described embodiment, about the specific of implementation procedure
Description is referring to the associated description of detection circuit in above-described embodiment, and details are not described herein.
In one embodiment, step S102 includes step S1021, step S1022 and step S1023.
Step S1021 obtains the real time output of each drive module.
Step S1022, preset standard output signal, judges whether there is according to real time output and standard output signals
It is abnormal.
Step S1023 is deposited when abnormal in real time output, distinguishes abnormal drive module and normal driving module, raw
At repair signal.
Wherein, step S1021, step S1022 and step S1023 by acquisition unit, the comparison list in above-described embodiment
Member and the corresponding execution of discrimination unit, the specific descriptions of implementation procedure are referring to acquisition unit, comparing unit and discrimination unit
Associated description, details are not described herein.
Step S103 disconnects abnormal drive module drive module to be entered corresponding with next stage according to repair signal
Connection, is also turned on the connection of normal driving module and drive module to be entered at the same level.
In the present embodiment, step S103 is executed by the reparation circuit in above-described embodiment, about the specific of implementation procedure
Description is referring to the associated description for repairing circuit in above-described embodiment, and details are not described herein.
In one embodiment, step S103 includes step S1031 and step S1032.
Step S1031 disconnects the second output unit of abnormal drive module according to repair signal and adjacent next stage inputs
The connection of unit.
Step S1032 connects the first output unit of normal driving module according to repair signal and adjacent next stage inputs
The connection of unit.
Wherein, step S1031 and step S1032 by above-described embodiment cutting control unit with connect control unit
Corresponding to execute, the specific descriptions of implementation procedure are referring to the associated description cut off control unit with connect control unit, herein no longer
It repeats.
Above-mentioned restorative procedure, the output signal by detecting driving circuit whether there is exception, when detection is deposited when abnormal
Directly quickly determine abnormal drive module present position and generate repair signal, abnormal driving mould is quickly disconnected according to repair signal
The company of normal driving module and drive module to be entered at the same level is connected in the connection of block drive module to be entered corresponding with next stage
It connects, to avoid normal driving module from being interfered and repair the transmitting of signal rapidly, improves remediation efficiency, keep display picture
Normally.
It should be noted that in the case where no appended drawing reference, " the first output unit ", " the second output in the application
Unit ", " input unit " and " control unit " refer to the unit in this stage drive circuit；" adjacent next stage input unit " is made
It is integral title, refers to the input unit in adjacent next stage drive circuit；" adjacent the first output unit of upper level " conduct
One whole title, refers to the first output unit in adjacent upper level driving circuit；" adjacent the second output unit of upper level " is made
It is integral title, refers to the second output unit in adjacent upper level driving circuit.Wherein, by taking N stage drive circuit as an example, then
Its adjacent upper level is (N-1) stage drive circuit, and adjacent next stage is (N+1) stage drive circuit
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of repair system of driving circuit characterized by comprising
At least two-stage drive circuit, the driving circuit is for driving scan line；Wherein, every stage drive circuit includes at least two
The drive module of drive module at the same level, adjacent two-stage corresponds, and when the output signal of grade drive module is as adjacent next
The enabling signal of the corresponding drive module of grade；
Detection circuit connects the driving circuit, and the output signal for detecting each drive module whether there is extremely, and
There are abnormal drive module and normal driving module is distinguished when exception, repair signal is generated；
Circuit is repaired, the detection circuit and the driving circuit are connected, for disconnecting abnormal driving according to the repair signal
The connection of module drive module to be entered corresponding with next stage, is also turned on normal driving module at the same level and the drive to be entered
The connection of dynamic model block.
2. repair system according to claim 1, which is characterized in that the detection circuit includes:
Acquisition unit connects the drive module, for obtaining the real time output of each drive module；
Comparing unit connects the acquisition unit, preset standard output signal is used for, according to real time output and standard output
Signal judges whether there is exception；
Discrimination unit connects the comparing unit, for being deposited when abnormal in real time output, distinguish abnormal drive module and
Normal driving module generates repair signal.
3. repair system according to claim 1, which is characterized in that the output signal includes driving signal and control letter
Number, the drive module includes:
First output unit, for receiving clock signal, output drive signal to corresponding scan line in conducting；
Second output unit outputs control signals to adjacent next stage input unit for receiving clock signal in conducting；
Input unit is separately connected first output unit and second output unit, for receiving adjacent upper level
The control signal of two output units output controls first output unit respectively and second output is single as enabling signal
The turn-on time of member；
Control unit is separately connected the input unit, first output unit and second output unit, for dividing
The deadline of first output unit and second output unit is not controlled.
4. repair system according to claim 3, which is characterized in that the reparation circuit includes:
Control unit is cut off, the second output unit and the adjacent next stage input unit of abnormal drive module are separately connected,
For disconnecting the second output unit and the adjacent next stage input unit of abnormal drive module according to the repair signal
Connection；
Control unit is connected, the first output unit and the adjacent next stage input unit of normal driving module are separately connected,
For connecting the first output unit and the adjacent next stage input unit of normal driving module according to the repair signal
Connection.
5. repair system according to claim 3, which is characterized in that the input unit is also used to receive adjacent upper level
The driving signal of first output unit output is as power supply signal；
The reparation circuit includes:
Control unit is cut off, the first output of the second output unit, abnormal drive module that are separately connected abnormal drive module is single
The first and described adjacent next stage input unit, the second output for disconnecting abnormal drive module according to the repair signal are single
First connection with the adjacent next stage input unit, disconnect the first output unit of abnormal drive module with it is described adjacent next
The connection of grade input unit；
Control unit is connected, the first output unit and the adjacent next stage input for being separately connected normal driving module are single
Member, for connecting the first output unit and the adjacent next stage input unit of normal driving module according to the repair signal
Connection.
6. repair system according to claim 3, which is characterized in that first output unit includes:
Thin film transistor (TFT) M1 and capacitor C1；
The grid of the thin film transistor (TFT) M1 be separately connected the first end of the capacitor C1, the control terminal of the input unit and
The control terminal of described control unit, the drain electrode input clock signal of the thin film transistor (TFT) M1, the source of the thin film transistor (TFT) M1
The second end of pole and the capacitor C1 are connected to corresponding scan line altogether.
7. repair system according to claim 3, which is characterized in that second output unit includes:
Thin film transistor (TFT) M2；
The grid of the thin film transistor (TFT) M2 is separately connected the control terminal of the input unit and the control terminal of described control unit,
The drain electrode input clock signal of the thin film transistor (TFT) M2, it is defeated that the source electrode of the thin film transistor (TFT) M2 connects the adjacent next stage
Enter unit.
8. a kind of repair system of driving circuit characterized by comprising
At least two-stage drive circuit, the driving circuit is for driving scan line；Wherein, every stage drive circuit includes at least two
The drive module of drive module at the same level, adjacent two-stage corresponds, and when the output signal of grade drive module is as adjacent next
The enabling signal of the corresponding drive module of grade；
Detection circuit connects the driving circuit, and the output signal for detecting each drive module whether there is extremely, and
There are abnormal drive module and normal driving module is distinguished when exception, repair signal is generated；
Circuit is repaired, the detection circuit and the driving circuit are connected, for disconnecting abnormal driving according to the repair signal
The connection of module drive module to be entered corresponding with next stage, is also turned on normal driving module at the same level and the drive to be entered
The connection of dynamic model block；
Wherein, the detection circuit includes:
Acquisition unit connects the drive module, for obtaining the real time output of each drive module；
Comparing unit connects the acquisition unit, preset standard output signal is used for, according to real time output and standard output
Signal judges whether there is exception；
Discrimination unit connects the comparing unit, for being deposited when abnormal in real time output, distinguish abnormal drive module and
Normal driving module generates repair signal；
Wherein, the output signal includes driving signal and control signal, and the drive module includes:
First output unit, for receiving clock signal, output drive signal to corresponding scan line in conducting；
Second output unit outputs control signals to adjacent next stage input unit for receiving clock signal in conducting；
Input unit is separately connected first output unit and second output unit, for receiving adjacent upper level
The control signal of two output units output, when controlling the conducting of first output unit and second output unit respectively
Between；
Control unit is separately connected the input unit, first output unit and second output unit, for dividing
The deadline of first output unit and second output unit is not controlled.
9. a kind of restorative procedure of driving circuit characterized by comprising
At least two-stage drive circuit is provided, the driving circuit is for driving scan line；Wherein, every stage drive circuit includes at least
Two drive modules at the same level, the drive module of adjacent two-stage correspond, and when the output signal of grade drive module is as adjacent
Next stage corresponds to the enabling signal of drive module；
The output signal of each drive module is detected with the presence or absence of abnormal, and distinguishes when having abnormal abnormal drive module and just
Normal drive module generates repair signal；
According to the repair signal, the connection of abnormal drive module drive module to be entered corresponding with next stage is disconnected, simultaneously
Connect the connection of normal driving module and the drive module to be entered at the same level.
10. restorative procedure according to claim 9, which is characterized in that the output signal of each drive module of detection
With the presence or absence of abnormal step, comprising:
Obtain the real time output of each drive module；
Preset standard output signal judges whether there is exception according to real time output and standard output signals；
It is deposited when abnormal in real time output, distinguishes abnormal drive module and normal driving module, generate repair signal.
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| CN201910564924.7A CN110164346A (en) | 2019-06-27 | 2019-06-27 | Repair system and repair method for driving circuit |
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| CN201910564924.7A CN110164346A (en) | 2019-06-27 | 2019-06-27 | Repair system and repair method for driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112671254A (en) * | 2019-10-16 | 2021-04-16 | 广州汽车集团股份有限公司 | Inverter circuit |
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