CN101533621A - Method for restoring grid drive - Google Patents
Method for restoring grid drive Download PDFInfo
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- CN101533621A CN101533621A CN200910049775A CN200910049775A CN101533621A CN 101533621 A CN101533621 A CN 101533621A CN 200910049775 A CN200910049775 A CN 200910049775A CN 200910049775 A CN200910049775 A CN 200910049775A CN 101533621 A CN101533621 A CN 101533621A
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Abstract
The invention relates to a method for restoring a grid drive. A device comprises a plurality of cascade shift registers, at least one standby shift register, a first restoration line and a second restoration line, wherein an output terminal of each-level shift register is provided with a grid wire lead; each standby shift register comprises a first clock input terminal, a second clock input terminal, a voltage terminal, an input terminal and an output terminal; and the first restoration line and the grid wire lead of the each-level shift register are insulated and crossed. The method for restoring the grid drive only uses two restoration lines, cuts the first restoration line and the second restoration line below a current laser fusion point after each restoration, and then can repeatedly utilize the first restoration line and the second restoration line to restore a plurality of failure shift registers so as to reduce restoration wiring and lower cost.
Description
Technical field
The present invention relates to a kind of restorative procedure of drive unit, particularly relate to a kind of restorative procedure of gate drivers of LCD.
Background technology
LCD has thin and lightweight advantage, and size all can be used from big to small.Therefore, in recent years, LCD has obtained development and application widely, as on knee and monitor, large-sized monitor and mobile terminal display desktop computer.In LCD, can control the light quantity of emission according to the picture signal that is applied to a plurality of gauge tap, thereby show the image of wishing.
LCD comprises the LCD panel that is used for display image and the data and the gate driver circuit that are used to drive the LCD panel.The LCD panel comprises many gate lines, data line and a plurality of pixel.Each pixel includes thin film transistor (TFT) (TFT) and liquid crystal capacitor.Data drive circuit exports data-signal to data line, and gate driver circuit exports gate drive signal to gate line.
In order to reduce cost, gate driver circuit can be made on the panel.At present, amorphous silicon has been used to make integrated gate drivers, because do not need extra operation and suitable large-scale production.Gate driver circuit is identical with the technology that forms TFT and be formed on the LCD panel with TFT.
Fig. 1 is existing gate drive apparatus structure principle chart, please refer to Fig. 1, and existing gate drive apparatus comprises a plurality of shift registers 104, connects with series system, and each drives a gate line 105 respectively.Positive clock cable 101, inversion clock signal wire 102, DC reference voltage signal wire 103, and incite somebody to action the connecting line 106 of two-stage series connection up and down.Except that first order shift register signal input end ST port directly inserts the start signal ST, the input end of all the other each grade shift registers all receives the output signal of previous stage shift register respectively as enabling signal.Shift register receives positive phase clock CK1 simultaneously, inversion clock CK2, DC reference voltage Vss operate, the clock that shift register received of front and back level must be anti-phase, for example, the shift register of odd level receives positive clock signal C K1, the shift register of even level receives inversion clock signal CK2, and so start signal ability one-level one-level hands on gate line (G1, G2, G3 ...) be driven successively.
Yet if wherein the one-level shift register damages in manufacture process, the gate line that it connected can't be driven, and moreover, even can have influence on the circuit running of the shift register after this grade.When big or sharpness is higher when panel size, the situation of this damage to yield to influence meeting more serious.Therefore to improve the yield of making screen display, after certain one-level shift register damages, still have remedial measures just to seem particularly important.
A kind of repair structure that proposes among the Chinese patent CN200610126737.3 sees also Fig. 2, among the figure a plurality of shift registers is divided into a group, and is equipped with a standby shift register 107, is used to replace the shift register of damage.This repair structure is provided with 3 and repairs line R1, R2, R3, wherein the ST port of R1 and standby shift register 107 is electrically connected by input terminal lead-in wire 110, R2 and standby shift register output port N are electrically connected by lead-out terminal lead-in wire 111, and R2 and R3 are provided with between each level and repair line line 113.Standby shift register clock port stretches out lead-in wire and positive clock signal lead-in wire 108, inversion clock signal lead 109 intersections but electric connection not.Gate line extended line 112 extends to and intersects with R1 but electric connection not, and gate line and R3 intersect but electric connection not.Damaging with Gn-1 institute corresponding displaced register below is example explanation repair process: cut off with laser beam and damage the shift register input/output port, shown in laser cutting point C1.With laser beam welding Gn-2 grid lead and reparation line R1, shown in the W2, introduce standby shift register initial pulse signal.With laser beam welding gate lines G n-1 and reparation line R3, shown in laser welding point W1, make standby shift register output terminal connect gate line.Go between with laser beam welding clock according to the shift register clock situation of damaging, shown in laser welding point W3 and W4.So, just use standby shift register to replace the shift register that damages, finish reparation, device keeps normal operation.
This scheme distribution is more, designs loaded down with trivial detailsly, is unfavorable for that integral layout and technology realize.And if there are a plurality of damage shift registers to exist, repair process can be cumbersome.
Summary of the invention
Technical matters to be solved by this invention provides a kind of restorative procedure of gate drivers, reduces and repairs distribution, reduces the cost.
The present invention solves the problems of the technologies described above the restorative procedure that the technical scheme that adopts provides a kind of gate drivers, this driving device of gate line comprises: a plurality of cascade shift registers, the lead-out terminal of every grade of shift register are provided with gate line and the grid lead that is electrically connected; At least one standby shift register, each standby shift register comprises first clock input terminal, second clock input terminal, voltage terminal, input terminal and lead-out terminal; First repairs line and second repairs line, and the described first grid lead insulation of repairing line and every grade of shift register intersects, and the described second gate line insulation of repairing line and every grade of shift register intersects; The voltage terminal of described standby shift register links to each other with the DC reference voltage signal wire, first clock input terminal, second clock input terminal are provided with the terminal lead that intersects with positive clock cable, the insulation of inversion clock signal wire, input terminal is provided with the terminal lead that intersects with the described first reparation line insulation, and lead-out terminal is provided with the terminal lead with the described second reparation line insulation intersection;
Wherein, described restorative procedure may further comprise the steps:
(a) shift register that connects when the capable gate line of i lost efficacy, and i is a positive integer, and the input terminal of the shift register that the capable gate line of i is connected and the lead-in wire of lead-out terminal cut off;
(b) select a backup shift register for repairing shift register, the clock input terminal lead-in wire of described reparation shift register is linked to each other with positive clock cable, inversion clock signal wire, and the connected mode of the connected mode of the clock signal of reparation shift register and the clock signal of inefficacy shift register is consistent;
(c) grid lead of the shift register that the capable gate line of i-1 is connected links to each other by the first laser welding point and the first reparation line, repairs line with first and links to each other with the input terminal lead-in wire of repairing shift register by the second laser welding point;
(d) repairing line with first below the first laser welding point and the second laser welding point cuts off;
(e) the lead-out terminal lead-in wire that will repair shift register is repaired line with second and is linked to each other with the capable gate line of i by the 4th laser welding point by linking to each other by the 3rd laser welding point and the second reparation line;
(f) repairing line with second below the 3rd laser welding point and the 4th laser welding point cuts off.
The restorative procedure of above-mentioned gate drivers, described standby shift register is positioned at the side of described driving device of gate line.
The restorative procedure of above-mentioned gate drivers, described with the first reparation line and the second reparation line cut-out, be by laser pulse the first reparation line and second to be repaired line to fuse.
The present invention contrasts prior art following beneficial effect: the restorative procedure of gate drivers provided by the invention, only use two to repair line, make full use of gate line that terminal lead and inefficacy shift register be expert to the reparation of inefficacy shift register, whenever finish once the reparation back and below current laser welding point, repair the line and the second reparation line cut-out first, can reuse first then repairs line and second and repairs line and repair the shift register of a plurality of inefficacies, reduce the reparation distribution, lowered cost.
Description of drawings
Fig. 1 is existing gate drive apparatus structure principle chart.
Fig. 2 is existing gate drive apparatus and repairs synoptic diagram.
Fig. 3 is gate drive apparatus of the present invention and repairs intention.
Among the figure:
101 positive clock cables, 102 inversion clock signal wires
103 DC reference voltage signal wires, 104 shift registers
The connecting line of 105 gate lines, 106 series connection
107 standby shift register 108 positive clock signals lead-in wires
109 inversion clock signal leads, 110 input terminals lead-in wire
111 lead-out terminals, the 112 grid extended lines that go between
113 repair line line 114,117 grid leads
115,118 lead-out terminals lead-in wire, 116,119 input terminals lead-in wire
CK1 positive clock signal C K2 inversion clock signal
Vss DC reference voltage SR shift register
The standby shift register R1 of SR ', R2, R3 repairs line
R first repairs line R ' second and repairs line
C1, C2, C3, C4, C5 laser cutting point
W1, W2, W3, W4, W5, W6, W7, W8, W9, W10, W11, W12 laser welding point
Embodiment
The invention will be further described below in conjunction with accompanying drawing and exemplary embodiments.
Fig. 3 is gate drive apparatus of the present invention and repairs intention.
See also Fig. 3, driving device of gate line of the present invention comprises a plurality of shift register SR, and each shift register comprises the first clock input terminal CK1, second clock input terminal CK2, voltage terminal Vss, input terminal ST and lead-out terminal N.
The first clock input terminal CK1, the second clock input terminal CK2 of described shift register link to each other with positive clock cable 108, inversion clock signal wire 109 respectively, and the phase place of the clock cable that the clock input terminal of adjacent two line shift registers connects is opposite.The first clock input terminal CK1 as the shift register on the odd-numbered line links to each other with positive clock cable 108, and second clock input terminal CK2 links to each other 109 with the inversion clock signal wire; The first clock input terminal CK1 of the shift register on the even number line links to each other with inversion clock signal wire 109, and second clock input terminal CK2 links to each other 108 with the positive clock cable.The voltage terminal of described shift register links to each other with the DC reference voltage signal wire.
Described a plurality of shift register is chained together successively, the input terminal of the first row G1 shift register links to each other with inceptive impulse, the input terminal ST of all the other shift registers links to each other with the lead-out terminal N of previous row shift register, and the lead-out terminal N of each line shift register links to each other with the current line gate line.
Driving device of gate line of the present invention also is manufactured with standby shift register SR ', and first repairs line R and second repairs line R '.Standby shift register SR ' voltage terminal links to each other with the DC reference voltage signal wire; The first clock input terminal CK1, second clock input terminal CK2 are provided with terminal lead and positive clock cable 108 and inversion clock signal wire 109 intersections but default electric connection; Lead-out terminal N is provided with terminal lead and first and repairs line R intersection but default not electric connection.Standby shift register SR ' is arranged in the same row of gate drivers shift register array, and the terminal lead that input end and output terminal are provided with intersects with corresponding signal lines respectively, but is in vacant state.
Specifically describe the repair process of the present invention below to single inefficacy shift register:
(a) shift register that connects when the capable gate line of i lost efficacy, and i is a positive integer, and the input terminal of the shift register that the capable gate line of i is connected and the lead-in wire of lead-out terminal cut off;
(b) select a backup shift register for repairing shift register, the clock input terminal lead-in wire of described reparation shift register is linked to each other with positive clock cable, inversion clock signal wire, and the connected mode of the connected mode of the clock signal of reparation shift register and the clock signal of inefficacy shift register is consistent;
(c) grid lead of the shift register that the capable gate line of i-1 is connected links to each other by the first laser welding point and the first reparation line, repairs line with first and links to each other with the input terminal lead-in wire of repairing shift register by the second laser welding point;
(d) repairing line with first below the first laser welding point and the second laser welding point cuts off;
(e) the lead-out terminal lead-in wire that will repair shift register is repaired line with second and is linked to each other with the capable gate line of i by the 4th laser welding point by linking to each other by the 3rd laser welding point and the second reparation line;
(f) repairing line with second below the 3rd laser welding point and the 4th laser welding point cuts off.
The restorative procedure of gate drivers provided by the invention, repair line R, second by first and repair gate line that line R ', terminal lead and inefficacy shift register be expert at the reparation of inefficacy shift register, below current laser welding point, repair the line R and the second reparation line R ' cut-out respectively after finishing once reparation with first, therefore can repair line R ' by the first reparation line R and second and repeat to repair the shift register of a plurality of inefficacies, reduce the reparation distribution, lowered cost.
In addition, the restorative procedure of gate drivers provided by the invention is easy to repair for extreme case.Please continue referring to Fig. 3, be example with more extreme damaged condition below, Gn-1 and the corresponding register of Gn damage simultaneously and are example, and n is a positive integer, repair process is as follows: the shift register input and output side that cuts off this damage with laser beam, shown in laser cutting point C1; Select welding input clock signal lead-in wire 108,109 according to the clock input condition of the shift register that damages, shown in laser welding point W1, W2; With laser beam welding upper level gate lines G n-2 lead-in wire 114 and reparation line R, shown in laser welding point W3, with input port (ST port) lead-in wire 116 of laser beam welding first reparation line R and standby shift register, shown in laser welding point W4; Repair line R ' and standby shift register output port (N port) lead-in wire 115 with laser beam welding second, shown in laser welding point W5; Repair line R ' and gate lines G n-1 with laser beam welding second, shown in laser welding point W6; Cut off first with laser beam and repair line R, shown in laser cutting point C2; Cut off second with laser beam and repair line R ', shown in laser cutting point C3.Output signal from upper level Gn-2 is transmitted to W3 by grid lead, be transmitted to reparation line R by W3, be transmitted to W4, be transmitted to standby shift register input port lead-in wire by W4, under the cooperation of clock signal, standby shift register produces output signal, be transmitted to W5 by the output port lead-in wire, be transmitted to second by W5 and repair line R ', be transmitted to W6, be transmitted to gate lines G n-1 by W6.So, replaced the shift register that damages, the device operate as normal.Because cut off reparation line R, R ', avoided signal by two influences of repairing line to the prosthetic device work of back.
Equally, the shift register input and output side that cuts off this damage with laser beam is shown in laser cutting point C4; Clock input condition according to the shift register that damages is selected the welding input clock signal, as laser welding point W7, W8; Repair line R with laser beam welding upper level gate lines G n-1 lead-in wire 117 and first, shown in laser welding point W9, the input port (ST port) of repairing line R and standby shift register with laser beam welding first goes between 119, shown in the W10; Repair line R ' and standby shift register output port (N port) lead-in wire 118 with laser beam welding second, shown in the W11; Repair line R ' and gate lines G n with laser beam welding second, shown in the W12; Cut off first with laser beam and repair line R, shown in laser cutting point C5; Cut off second with laser beam and repair line R ', shown in laser cutting point C6.Output signal from upper level Gn-1 is transmitted to W9 by grid lead, be transmitted to first by W9 and repair line R, be transmitted to W10, be transmitted to standby shift register input port lead-in wire by W10, under the cooperation of clock signal, standby shift register produces output signal, be transmitted to W11 by the output port lead-in wire, be transmitted to second by W11 and repair line R ', be transmitted to W12, be transmitted to gate lines G n by W12.So, replaced the shift register of the damage of gate lines G n correspondence.The signal normal delivery is gone down, and the assurance gate drivers is correctly worked.
In sum, the restorative procedure of gate drivers provided by the invention, after utilizing the first reparation line R and the second reparation line R ' to finish the capable inefficacy shift register reparation of Gn-1, repair line R by below laser welding point W3, W4, cutting off first, repair line R ' by below laser welding point W5, W6, cutting off second.Can continue to utilize the first reparation line R and second to repair line R ' repairs becoming the capable inefficacy shift register of Gn.Therefore, this programme can utilize two repairs repeatedly of repairing the line realization to device very easily, is particularly suitable for the repair process under the extreme condition.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (3)
1, a kind of restorative procedure of gate drivers, this driving device of gate line comprises:
A plurality of cascade shift registers, the lead-out terminal of every grade of shift register are provided with gate line and the grid lead that is electrically connected;
At least one standby shift register, each standby shift register comprises first clock input terminal, second clock input terminal, voltage terminal, input terminal and lead-out terminal;
First repairs line and second repairs line, and the described first grid lead insulation of repairing line and every grade of shift register intersects, and the described second gate line insulation of repairing line and every grade of shift register intersects;
The voltage terminal of described standby shift register links to each other with the DC reference voltage signal wire, first clock input terminal, second clock input terminal are provided with the terminal lead that intersects with positive clock cable, the insulation of inversion clock signal wire, input terminal is provided with the terminal lead that intersects with the described first reparation line insulation, and lead-out terminal is provided with the terminal lead with the described second reparation line insulation intersection;
It is characterized in that described restorative procedure may further comprise the steps:
(a) shift register that connects when the capable gate line of i lost efficacy, and i is a positive integer, and the input terminal of the shift register that the capable gate line of i is connected and the lead-in wire of lead-out terminal cut off;
(b) select a backup shift register for repairing shift register, the clock input terminal lead-in wire of described reparation shift register is linked to each other with positive clock cable, inversion clock signal wire, and the connected mode of the connected mode of the clock signal of reparation shift register and the clock signal of inefficacy shift register is consistent;
(c) grid lead of the shift register that the capable gate line of i-1 is connected links to each other by the first laser welding point and the first reparation line, repairs line with first and links to each other with the input terminal lead-in wire of repairing shift register by the second laser welding point;
(d) repairing line with first below the first laser welding point and the second laser welding point cuts off;
(e) the lead-out terminal lead-in wire that will repair shift register is repaired line with second and is linked to each other with the capable gate line of i by the 4th laser welding point by linking to each other by the 3rd laser welding point and the second reparation line;
(f) repairing line with second below the 3rd laser welding point and the 4th laser welding point cuts off.
2, the restorative procedure of gate drivers according to claim 1 is characterized in that, described standby shift register is positioned at the side of described driving device of gate line.
3, the restorative procedure of gate drivers according to claim 1 is characterized in that, and is described with the first reparation line and the second reparation line cut-out, is by laser pulse the first reparation line and second to be repaired line to fuse.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049775A CN101533621A (en) | 2009-04-22 | 2009-04-22 | Method for restoring grid drive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049775A CN101533621A (en) | 2009-04-22 | 2009-04-22 | Method for restoring grid drive |
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| CN101533621A true CN101533621A (en) | 2009-09-16 |
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| WO2014134877A1 (en) * | 2013-03-07 | 2014-09-12 | 京东方科技集团股份有限公司 | Shift register, gate electrode drive circuit and repairing method thereof, and display device |
| CN104122685A (en) * | 2013-08-08 | 2014-10-29 | 深超光电（深圳）有限公司 | Repairing structure of liquid crystal display panel |
| WO2016011756A1 (en) * | 2014-07-24 | 2016-01-28 | 京东方科技集团股份有限公司 | Array substrate, display panel and repair method therefor |
| CN105511128A (en) * | 2016-01-28 | 2016-04-20 | 武汉华星光电技术有限公司 | Display panel and quickly repaired multiplexer circuit and repair method thereof |
| CN105654886A (en) * | 2016-01-25 | 2016-06-08 | 重庆京东方光电科技有限公司 | Grid drive circuit, repairing method thereof and display device |
| WO2017041432A1 (en) * | 2015-09-09 | 2017-03-16 | 京东方科技集团股份有限公司 | Array substrate, display apparatus and method for repairing fault in array substrate |
| CN108010490A (en) * | 2017-11-29 | 2018-05-08 | 武汉华星光电半导体显示技术有限公司 | A kind of drive circuit |
| CN108230986A (en) * | 2018-02-01 | 2018-06-29 | 京东方科技集团股份有限公司 | Gate driving circuit, display device and its restorative procedure |
| WO2019104826A1 (en) * | 2017-11-29 | 2019-06-06 | 武汉华星光电技术有限公司 | Array substrate and repair method therefor |
| CN110277065A (en) * | 2019-07-11 | 2019-09-24 | 武汉京东方光电科技有限公司 | Drive element of the grid and its driving method, gate driving circuit and display panel |
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| WO2014134877A1 (en) * | 2013-03-07 | 2014-09-12 | 京东方科技集团股份有限公司 | Shift register, gate electrode drive circuit and repairing method thereof, and display device |
| US9384686B2 (en) | 2013-03-07 | 2016-07-05 | Boe Technology Group Co., Ltd | Shift register, gate driving circuit and repairing method therefor, and display device |
| CN104122685A (en) * | 2013-08-08 | 2014-10-29 | 深超光电（深圳）有限公司 | Repairing structure of liquid crystal display panel |
| WO2016011756A1 (en) * | 2014-07-24 | 2016-01-28 | 京东方科技集团股份有限公司 | Array substrate, display panel and repair method therefor |
| US9704448B2 (en) | 2014-07-24 | 2017-07-11 | Boe Technology Group Co., Ltd. | Array substrate, display panel and repairing method thereof |
| US10565915B2 (en) | 2015-09-09 | 2020-02-18 | Boe Technology Group Co., Ltd. | Array substrate, display device, and fault repair method for array substrate |
| WO2017041432A1 (en) * | 2015-09-09 | 2017-03-16 | 京东方科技集团股份有限公司 | Array substrate, display apparatus and method for repairing fault in array substrate |
| CN105654886A (en) * | 2016-01-25 | 2016-06-08 | 重庆京东方光电科技有限公司 | Grid drive circuit, repairing method thereof and display device |
| CN105511128A (en) * | 2016-01-28 | 2016-04-20 | 武汉华星光电技术有限公司 | Display panel and quickly repaired multiplexer circuit and repair method thereof |
| CN105511128B (en) * | 2016-01-28 | 2019-04-26 | 武汉华星光电技术有限公司 | Display panel, the multiplexer circuit and its restorative procedure that can fast repair |
| WO2019104826A1 (en) * | 2017-11-29 | 2019-06-06 | 武汉华星光电技术有限公司 | Array substrate and repair method therefor |
| CN108010490A (en) * | 2017-11-29 | 2018-05-08 | 武汉华星光电半导体显示技术有限公司 | A kind of drive circuit |
| CN108230986A (en) * | 2018-02-01 | 2018-06-29 | 京东方科技集团股份有限公司 | Gate driving circuit, display device and its restorative procedure |
| CN110277065A (en) * | 2019-07-11 | 2019-09-24 | 武汉京东方光电科技有限公司 | Drive element of the grid and its driving method, gate driving circuit and display panel |
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Open date: 20090916 |