CN109725469B - Electrostatic protection structure and electrostatic protection method - Google Patents
Electrostatic protection structure and electrostatic protection method Download PDFInfo
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- CN109725469B CN109725469B CN201811589920.6A CN201811589920A CN109725469B CN 109725469 B CN109725469 B CN 109725469B CN 201811589920 A CN201811589920 A CN 201811589920A CN 109725469 B CN109725469 B CN 109725469B
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Abstract
The invention relates to an electrostatic protection structure and an electrostatic protection method, wherein the electrostatic protection structure is arranged in an array substrate and comprises the following components: the scanning lines are arranged in parallel, the tail ends of the scanning lines are connected through a metal wire, and a first discharging piece is arranged on the metal wire; the common electrode wire is provided with a second discharging piece opposite to the first discharging piece; and an insulating layer disposed between the metal line and the common electrode line. The invention releases static charges in a fixed area, reduces the probability of damaging the circuit of the effective display area of the display panel due to the accumulation of the static charges on the substrate and improves the production yield.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to an electrostatic protection structure and an electrostatic protection method.
Background
In the manufacturing process of thin film transistor liquid crystal display (TFT-LCD), since the substrate of the display is glass, which is an insulating material (its conductivity is only 10-14S/cm), in other words, the static elimination Rate (Decay Rate) is relatively slow. When the surface of the glass substrate is subjected to serial manufacturing steps (such as dry etching) and during the transportation of the substrate, a lot of static charges are accumulated on the surface of the substrate, and the static charges stay on the surface of the glass substrate unless a proper discharge channel is provided, and circuits of the display panel are a large number of circuits formed by metal, and the accumulated static charges are released in the display panel to damage the circuits, so that the display panel is irreparable. As the display progresses toward the target of larger panel sizes, the static charge build up on the substrate will only increase.
Disclosure of Invention
Accordingly, there is a need to provide an electrostatic protection structure and an electrostatic protection method, which can discharge electrostatic charges in a fixed area, reduce the probability of damaging the circuits in the effective display area of the display panel due to the accumulation of electrostatic charges on the substrate, and improve the production yield.
An electrostatic protection structure disposed in an array substrate, comprising:
the scanning lines are arranged in parallel, the tail ends of the scanning lines are connected through a metal wire, and a first discharging piece is arranged on the metal wire;
the common electrode wire is provided with a second discharging piece opposite to the first discharging piece;
and an insulating layer disposed between the metal line and the common electrode line.
In one embodiment, the metal line is a first metal layer, the common electrode line is a second metal layer, and the insulating layer is located between the first metal layer and the second metal layer.
In one embodiment, one end of the first discharge element is connected to the first metal layer, and the other end of the first discharge element is connected to the insulating layer.
In one embodiment, one end of the second discharge element is connected to the second metal layer, and the other end of the second discharge element is connected to the insulating layer.
In one embodiment, every two scan lines are provided, one first discharge element and one second discharge element opposite to the first discharge element.
In one embodiment, the first discharge element and the second discharge element are each provided with a tip, and the tip of the first discharge element is disposed opposite to the tip of the second discharge element.
Based on the inventive concept, an electrostatic protection structure is provided, which comprises:
the scanning lines are arranged in parallel, the tail ends of the scanning lines are connected through a metal wire, and a first discharging piece is arranged on the metal wire;
the common electrode wire is provided with a second discharging piece opposite to the first discharging piece;
an insulating layer disposed between the metal line and the common electrode line;
the first discharging piece and the second discharging piece are both provided with tips, and the tip of the first discharging piece is opposite to the tip of the second discharging piece;
the metal wire is a first metal layer, the common electrode wire is a second metal layer, and the insulating layer is positioned between the first metal layer and the second metal layer;
one end of the first discharging piece is connected with the first metal layer, and the other end of the first discharging piece is connected with the insulating layer;
one end of the second discharge element is connected with the second metal layer, and the other end of the second discharge element is connected with the insulating layer;
a pair of the first discharge element and the second discharge element is provided every two scan lines apart.
Based on the inventive concept, a static protection method is provided, which comprises the following steps:
the tail ends of a plurality of scanning lines which are arranged in parallel are connected through a metal wire;
a first discharging piece is arranged on the metal wire;
a second discharge part opposite to the first discharge part is arranged on the common electrode wire;
an insulating layer is disposed between the metal line and the common electrode line.
In one embodiment, the electrostatic protection method further comprises: and disconnecting the scanning line from the metal line.
In one embodiment, tips are respectively disposed on the first discharge element and the second discharge element, and the tip on the first discharge element is disposed opposite to the tip on the second discharge element.
According to the electrostatic protection structure and the electrostatic protection method, a large amount of electrostatic charges formed on the common electrode wire and the scanning wire are guided to the fixed area, the electrostatic charges are released through the first discharging part and the second discharging part, the first discharging part and the second discharging part are oppositely arranged, the insulating layer is arranged between the metal wire connected with the first discharging part and the common electrode wire connected with the second discharging part, the electrostatic charges are released in the middle area where the first discharging part and the second discharging part are opposite, the probability of blasting a circuit of an effective display area of the display panel can be effectively reduced, and the production yield is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of an electrostatic discharge protection structure;
FIG. 2 is a flow diagram of a method for electrostatic protection in one embodiment;
fig. 3 is a schematic structural diagram of an electrostatic protection structure in another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
An electrostatic discharge protection structure, as shown in fig. 1, disposed in an array substrate 100, includes:
the scanning lines 110 are arranged in parallel, the tail ends of the scanning lines 110 are connected through a metal wire 120, and a first discharging piece 121 is arranged on the metal wire 120;
a common electrode line 130, on which the second discharge element 131 is disposed opposite to the first discharge element 121, i.e., the first discharge element 121 and the second discharge element 131 exist in pairs;
and an insulating layer 140 disposed between the metal line 120 and the common electrode line 130.
The first and second discharge elements 121 and 131 are used to concentrate static electricity formed on the array substrate 100 in the insulating layer 140 for discharge. The first discharge elements 121 and the second discharge elements 131 are provided in several pairs, and are distributed on the array substrate 100 in an array, and the specific arrangement manner or the interval is determined according to actual needs, which is not specifically limited in this embodiment.
In the electrostatic protection structure of the embodiment, a large amount of electrostatic charges formed on the common electrode line 130 and the scan line 110 are guided to a fixed area, and the electrostatic charges are released in the insulating layer 140 through the first discharge element 121 and the second discharge element 131, so that the probability of damaging the circuit of the effective display area of the display panel by explosion can be effectively reduced, and the production yield is improved.
In one embodiment, with reference to fig. 1, the first discharging element 121 and the second discharging element 131 are both provided with tips, and the tips of the first discharging element 121 and the tips of the second discharging element 131 are disposed opposite to each other, so that the electrostatic charges can be concentrated on one point for releasing, thereby avoiding scattering of the electrostatic charges and effectively reducing an area affected by the electrostatic charges on the array substrate when the electrostatic charges are released.
Specifically, the tips of the first and second discharging members 121 and 131 are each cone to enhance the discharging effect of the tips.
The metal line 120 is a first metal layer, the common electrode line 130 is a second metal layer, and the insulating layer 140 is located between the first metal layer and the second metal layer, that is, the first metal layer, the insulating layer 140, and the second metal layer are sequentially stacked.
One end of the first discharge element 121 is connected to the first metal layer, and the other end is connected to the insulating layer 140; one end of the second discharge element 131 is connected to the second metal layer, and the other end is connected to the insulating layer 140. Specifically, the tip of the first discharge element 121 and the tip of the second discharge element 131 are respectively connected to the insulating layer 140, so that static charges are discharged from the insulating layer 140, the probability of damaging the circuits in the effective area of the array substrate during static discharge is effectively reduced, and the production yield is improved.
In one embodiment, with continued reference to fig. 1, a pair of first and second discharge elements 121 and 131 are provided every two scan lines 110 apart. The array substrate 100 is further provided with a plurality of pixels 150, each pixel 150 is respectively connected to the common electrode line 130 and the scan line 110, a distance between each pair of the first discharge element 121 and the second discharge element 131 may be 0.5 times, 1 times, 2 times or 4 times of a pixel pitch, and an appropriate distance may be selected according to actual needs to ensure that electrostatic discharge areas of each pair of the first discharge element 121 and the second discharge element 131 do not overlap. Specifically, the first and second discharge elements 121 and 131 are disposed on the edge side of the array substrate 100, further reducing the influence on the array substrate caused when the electrostatic charge is discharged; meanwhile, the area of the display area of the array substrate 100 is not occupied by the arrangement of the electrostatic protection structure, and the influence of the arrangement of the electrostatic protection structure on the wiring on the array substrate 100 is reduced.
In the electrostatic protection structure in this embodiment, the first discharge element 121 and the second discharge element 131 are both provided with tips, and the tips of the first discharge element 121 and the tips of the second discharge element 131 are arranged oppositely, so that electrostatic charges can be released at one point in a concentrated manner due to the arrangement of the tips, thereby avoiding electrostatic charge scattering, and effectively reducing the area affected by the electrostatic charges on the array substrate when the electrostatic charges are released; the electrostatic charges formed on the common electrode line 130 and the scan line 110 are guided to a fixed area, and are discharged in the insulating layer 140 through the first discharge element 121 and the second discharge element 131, so that the probability of damaging the circuit of the effective display area of the display panel by explosion can be effectively reduced, and the production yield is improved.
Based on the above inventive concept, an electrostatic protection method is provided, as shown in fig. 2-3, including:
s201, connecting the tail ends of a plurality of scanning lines 310 which are arranged in parallel through a metal wire 320;
s202, a first discharge element 321 is disposed on the metal wire 320;
s203, arranging a second discharge element 331 opposite to the first discharge element 321 on the common electrode line 330, that is, the first discharge element 321 and the second discharge element 331 exist in pairs;
and S204, arranging an insulating layer 340 between the metal wire 320 and the common electrode wire 330.
The electrostatic protection method is applied to the array substrate 300, and the first discharge element 321 and the second discharge element 331 are used for concentrating the static electricity formed on the array substrate 300 in the insulating layer 340 for releasing. The first discharge elements 321 and the second discharge elements 331 are provided with a plurality of pairs, and are distributed on the array substrate 300 in an array, the specific arrangement manner or the interval is determined according to actual needs, and reference may be made to the arrangement manner and the interval of the first discharge elements 321 and the second discharge elements 331 in the previous embodiment, which is not specifically limited in this embodiment.
In the electrostatic protection method in this embodiment, a large amount of electrostatic charges formed on the common electrode line 330 and the scan line 310 are guided to a fixed region, and are discharged in the insulating layer 340 through the first discharge element 321 and the second discharge element 331, so that the probability of damaging the circuit of the effective display region of the display panel by explosion can be effectively reduced, and the production yield can be improved.
In one embodiment, with continued reference to fig. 2-3, the electrostatic protection method further comprises disconnecting the scan line 310 from the metal line 320.
The method in this embodiment therefore comprises the steps of:
s201, connecting the tail ends of a plurality of scanning lines 310 which are arranged in parallel through a metal wire 320;
s202, a first discharge element 321 is disposed on the metal wire 320;
s203, arranging a second discharge element 331 opposite to the first discharge element 321 on the common electrode line 330, that is, the first discharge element 321 and the second discharge element 331 exist in pairs;
s204, disposing an insulating layer 340 between the metal line 320 and the common electrode line 330;
and S205, disconnecting the scanning line 310 from the metal line 320.
In step S205, the connection between the scan lines 310 and the metal lines 320 is broken, and the ends of the plurality of scan lines 310 arranged in parallel and connected to the metal lines 320 can be cut off, so that the original connection state between the scan lines 310 is restored, and the display panel can be used normally after the connection between the scan lines 310 and the metal lines 320 is broken. Specifically, the manner of cutting off the ends of the scan lines 310 connected to the metal lines 320 may be laser cutting, where the laser cuts along the cutting lines 360 in fig. 3, so as to restore the original connection state between the scan lines 310.
In the electrostatic protection method in this embodiment, a large amount of electrostatic charges formed on the common electrode line 330 and the scan line 310 are guided to a fixed region, and the electrostatic charges are discharged in the insulating layer 340 through the first discharge element 321 and the second discharge element 331, so that the probability of damaging the circuit in the effective display region of the display panel by explosion can be effectively reduced, and the production yield can be improved.
In one embodiment, the tips are respectively disposed on the first discharging element 321 and the second discharging element 331, and the tips on the first discharging element 321 are disposed opposite to the tips on the second discharging element 331, so that the electrostatic charge can be concentrated on one point for releasing, thereby avoiding electrostatic charge scattering, and effectively reducing the area affected by the electrostatic charge on the array substrate when releasing.
The metal line 320 is a first metal layer, the common electrode line 330 is a second metal layer, and the insulating layer 340 is located between the first metal layer and the second metal layer, that is, the first metal layer, the insulating layer 340, and the second metal layer are sequentially stacked.
One end of the first discharge element 321 is connected to the first metal layer, and the other end is connected to the insulating layer 340; one end of the second discharge element 331 is connected to the second metal layer, and the other end is connected to the insulating layer 340. The tip of the first discharge element 321 and the tip of the second discharge element 331 are respectively connected to the insulating layer 340, so that static charges are discharged from the insulating layer 340, thereby effectively reducing the probability of damaging the circuits in the effective area of the array substrate during static discharge and improving the production yield.
In the electrostatic protection method in this embodiment, the tips are respectively disposed on the first discharging element 321 and the second discharging element 331, and the tips on the first discharging element 321 are disposed opposite to the tips on the second discharging element 331, so that the electrostatic charges can be released at one point by the disposition of the tips, thereby avoiding electrostatic charge scattering, and effectively reducing the area affected by the electrostatic charges on the array substrate when the electrostatic charges are released; a large amount of static charges formed on the common electrode line 330 and the scan line 310 are guided to a fixed area, and are discharged in the insulating layer 340 through the first discharge part 321 and the second discharge part 331, so that the probability of damaging the circuit of the effective display area of the display panel by explosion can be effectively reduced, and the production yield is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electrostatic protection structure is arranged in an array substrate, and is characterized by comprising:
the scanning device comprises a plurality of scanning lines arranged in parallel, wherein the tail ends of the scanning lines are connected through a metal wire, and a first discharging piece is arranged on the metal wire;
the common electrode wire is provided with a second discharging piece opposite to the first discharging piece;
an insulating layer disposed between the metal line and the common electrode line, the metal line, the insulating layer, and the common electrode line being sequentially stacked such that an electrostatic charge formed on the common electrode line and the scan line is guided to a fixed region, the electrostatic charge being discharged in the insulating layer by the first discharging member and the second discharging member.
2. The ESD structure of claim 1 wherein the metal line is a first metal layer, the common electrode line is a second metal layer, and the insulating layer is between the first metal layer and the second metal layer.
3. The electrostatic protection structure of claim 2, wherein one end of the first discharge element is connected to the first metal layer, and the other end of the first discharge element is connected to the insulating layer.
4. The electrostatic protection structure of claim 2, wherein one end of the second discharge element is connected to the second metal layer, and the other end of the second discharge element is connected to the insulating layer.
5. The electrostatic protection structure according to claim 1, wherein one of said first discharge elements and one of said second discharge elements opposite to said first discharge element are provided every two scan lines apart.
6. An electrostatic protection structure according to any one of claims 1 to 5, wherein the first discharge element and the second discharge element are each provided with a tip, the tip of the first discharge element being disposed opposite the tip of the second discharge element.
7. An electrostatic protection structure, comprising:
the scanning lines are arranged in parallel, the tail ends of the scanning lines are connected through a metal wire, and a first discharging piece is arranged on the metal wire;
the common electrode wire is provided with a second discharging piece opposite to the first discharging piece;
an insulating layer disposed between the metal line and the common electrode line, the metal line, the insulating layer, and the common electrode line being sequentially stacked such that an electrostatic charge formed on the common electrode line and the scan line is guided to a fixed region, the electrostatic charge being discharged in the insulating layer by the first discharging member and the second discharging member;
the first discharging piece and the second discharging piece are both provided with tips, and the tip of the first discharging piece is opposite to the tip of the second discharging piece;
the metal wire is a first metal layer, the common electrode wire is a second metal layer, and the insulating layer is positioned between the first metal layer and the second metal layer;
one end of the first discharging piece is connected with the first metal layer, and the other end of the first discharging piece is connected with the insulating layer;
one end of the second discharge element is connected with the second metal layer, and the other end of the second discharge element is connected with the insulating layer;
and a pair of the first discharging part and the second discharging part is arranged every two scanning lines.
8. An electrostatic discharge protection method, comprising:
the tail ends of a plurality of scanning lines arranged in parallel are connected through a metal wire;
a first discharging piece is arranged on the metal wire;
a second discharge part opposite to the first discharge part is arranged on the common electrode wire;
an insulating layer is disposed between the metal line and the common electrode line, the metal line, the insulating layer, and the common electrode line are sequentially stacked such that electrostatic charges formed on the common electrode line and the scan line are guided to a fixed region, and the electrostatic charges are discharged in the insulating layer by the first discharging member and the second discharging member.
9. The electrostatic protection method according to claim 8, further comprising: and disconnecting the scanning line from the metal line.
10. The electrostatic protection method according to claim 8, wherein a tip is provided on each of the first discharge element and the second discharge element, and the tip on the first discharge element is disposed opposite to the tip on the second discharge element.
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| CN109725469B true CN109725469B (en) | 2022-05-06 |
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| CN114446260B (en) * | 2022-03-24 | 2023-08-22 | 北京京东方显示技术有限公司 | Array substrate and display device |
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| CN101236315A (en) * | 2007-02-02 | 2008-08-06 | 群康科技(深圳)有限公司 | LCD device |
| CN101256986A (en) * | 2008-03-21 | 2008-09-03 | 上海广电光电子有限公司 | Manufacturing method of LCD device and TFT completing substrate thereof |
| CN103676378A (en) * | 2013-12-16 | 2014-03-26 | 深圳市华星光电技术有限公司 | Array substrate, liquid crystal display panel and manufacturing method of array substrate |
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| CN207424484U (en) * | 2017-11-27 | 2018-05-29 | 京东方科技集团股份有限公司 | A kind of array substrate and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1228669C (en) * | 2003-10-17 | 2005-11-23 | 友达光电股份有限公司 | Static discharging protection structure |
| CN206301112U (en) * | 2016-10-18 | 2017-07-04 | 京东方科技集团股份有限公司 | A kind of array base palte and display device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236315A (en) * | 2007-02-02 | 2008-08-06 | 群康科技(深圳)有限公司 | LCD device |
| CN101256986A (en) * | 2008-03-21 | 2008-09-03 | 上海广电光电子有限公司 | Manufacturing method of LCD device and TFT completing substrate thereof |
| CN103676378A (en) * | 2013-12-16 | 2014-03-26 | 深圳市华星光电技术有限公司 | Array substrate, liquid crystal display panel and manufacturing method of array substrate |
| CN107703691A (en) * | 2017-10-12 | 2018-02-16 | 惠科股份有限公司 | Array base palte |
| CN207424484U (en) * | 2017-11-27 | 2018-05-29 | 京东方科技集团股份有限公司 | A kind of array substrate and display device |
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