CN102033373B - Liquid crystal display device having a plurality of pixel electrodes - Google Patents
Liquid crystal display device having a plurality of pixel electrodes Download PDFInfo
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- CN102033373B CN102033373B CN2009101968998A CN200910196899A CN102033373B CN 102033373 B CN102033373 B CN 102033373B CN 2009101968998 A CN2009101968998 A CN 2009101968998A CN 200910196899 A CN200910196899 A CN 200910196899A CN 102033373 B CN102033373 B CN 102033373B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 85
- 239000002184 metal Substances 0.000 claims abstract description 85
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 23
- 238000005260 corrosion Methods 0.000 claims description 20
- 230000007797 corrosion Effects 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 17
- 239000007769 metal material Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 2
- 239000011241 protective layer Substances 0.000 abstract 2
- 239000010408 film Substances 0.000 description 8
- 230000002269 spontaneous effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a liquid crystal display device which comprises a substrate, wherein the substrate comprises a display area and a non-display area which are adjacent, a plurality of driving wires are arranged on the surface of the display area, at least one group of switch elements, at least one detection point and a plurality of metal wires are arranged on the surface of the non-display area, a protective layer covers the metal wires, the at least one group of switch elements comprises a plurality of switch elements, one end of each switch element is electrically connected with one driving wire of the display area through one metal wire, the other end of each switch element is electrically connected with the at least one detection point through the other metal wire, and an opening is formed in the protective layer on the metal wire at least one end of each switch element so that the metal wire can be in direct contact with the outside air. Therefore, in the normal working process of the liquid crystal display device, the metal wire is naturally corroded by the outside air through the opening hole, and then the metal wire is disconnected, so that short circuit or discharge between the driving wires of the display area is avoided.
Description
Technical field
The present invention relates to technical field of semiconductor device, particularly a kind of liquid crystal indicator.
Background technology
At present, liquid crystal indicator generally includes has the adjacent viewing area and the substrate of non-display area, and non-display area can be tested the viewing area, and this non-display area still kept and being electrically connected of viewing area after test was accomplished.
Fig. 1 is a kind of synoptic diagram of circuit structure of the liquid crystal indicator of prior art.Among Fig. 1, this circuit structure adopts five cluster film transistors as on-off element, the transmission of the drive wire (for example, controlling grid scan line or data line) of control test signal from the test port to the viewing area.Be communicated to test port GE again after in the first cluster film transistor in the drain electrode of each thin film transistor (TFT) 100 or the source electrode extremely all is electrically connected to check point 101, and another utmost point is connected respectively to one group of controlling grid scan line of viewing area.Be communicated to test port GO again after in the second cluster film transistor in the drain electrode of each thin film transistor (TFT) 200 or the source electrode extremely all is electrically connected to check point 201, and another utmost point is connected respectively to another group controlling grid scan line of viewing area.Be communicated to test port S1 again after in the 3rd cluster film transistor in the drain electrode of each thin film transistor (TFT) 300 or the source electrode extremely all is electrically connected to check point 301, and another utmost point is connected respectively to first group of data line of viewing area.Be communicated to test port S2 again after in the 4th cluster film transistor in the drain electrode of each thin film transistor (TFT) 400 or the source electrode extremely all is electrically connected to check point 401, and another utmost point is connected respectively to second group of data line of viewing area.Be communicated to test port S3 again after in the 5th cluster film transistor in the drain electrode of each thin film transistor (TFT) 500 or the source electrode extremely all is electrically connected to check point 501, and another utmost point is connected respectively to the 3rd group of data line of viewing area.The grid of all thin film transistor (TFT)s links together and is communicated to test port SW.When beginning to test, give test port SW, open all thin film transistor (TFT)s, test signal is sent to all drive wires of viewing area from test port GE, GO, S1, S2, S3 with high voltage.When the liquid crystal indicator operate as normal, give test port SW with low-voltage, turn-off all thin film transistor (TFT)s, and test port GE, GO, S1, S2, S3 open circuit.Yet; In actual use, when the liquid crystal indicator operate as normal, because one in drain electrode or the source electrode of each thin film transistor (TFT) extremely all is electrically connected to a check point in the cluster film transistor; And another utmost point is connected respectively to the drive wire of viewing area; If have the characteristic of at least two thin film transistor (TFT)s bad in this cluster film transistor (that is, not turn-offing fully), then short circuit or discharge might appear at least between the drive wire that these two thin film transistor (TFT)s connect; Form excessive leakage current loop, and then cause power consumption excessive and make the work of viewing area occur unusual.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal indicator, dysgenic problem is caused in the viewing area with the on-off element that solves non-display area in the prior art.
The invention provides a kind of liquid crystal indicator; Said liquid crystal indicator comprises a substrate; Said substrate comprises adjacent viewing area and non-display area, and surface, said viewing area is provided with many drive wires, and said non-display area surface is provided with at least one group of on-off element, at least one check point and many metal line; Be coated with protective seam on said many metal line; Said at least one group of on-off element comprises a plurality of on-off elements, is electrically connected through a metal wire between an end of each on-off element and the drive wire of said viewing area, and the other end of said on-off element is electrically connected through another metal wire with said at least one check point; Wherein, on the protective seam on the metal wire of at least one end of said each on-off element, be formed with perforate so that said metal wire directly contacts with outside air.
Preferably, said perforate is between said on-off element and said drive wire, and the metal wire between said perforate and said drive wire is formed with first gap, and the metal wire of the said first gap both sides is electrically connected through an articulamentum.Further, the metal wire between said perforate and said on-off element is formed with second gap, and the metal wire of the said second gap both sides is electrically connected through an articulamentum.
Preferably, said perforate is between said on-off element and said at least one check point, and the metal wire between said perforate and said at least one check point is formed with the 3rd gap, and the metal wire of said the 3rd gap both sides is electrically connected through an articulamentum.Further, the metal wire between said perforate and said on-off element is formed with the 4th gap, and the metal wire of said the 4th gap both sides is electrically connected through an articulamentum.
Preferably, said metal wire adopts the corrosion resistivity metal material to process, and preferably, said metal material is the alloy that a kind of or two or more at least above-mentioned metal materials among Cr, W, Ti, Ta, Mo, Al, the Cu are combined to form.
Preferably, the material of said formation articulamentum is the corrosion resistivity conductive material, and preferably, said conductive material is a tin indium oxide.
Preferably, said articulamentum is formed on the said protective seam, further on protective seam, forms two via holes, and these metal wire gap two ends are connected with this articulamentum through this via hole.
Preferably, said on-off element is a thin film transistor (TFT).
Preferably, said drive wire is controlling grid scan line or data line.
Compared with prior art; Liquid crystal indicator provided by the invention; Be electrically connected through a metal wire between one end of each on-off element in every group of on-off element of non-display area and the drive wire of viewing area, and the other end is electrically connected through another metal wire with check point, through on the protective seam on the metal wire of at least one end of said each on-off element, being formed with perforate so that said metal wire directly contacts with outside air; Thereby in the course of normal operation of liquid crystal indicator; Said metal wire by the outside air spontaneous corrosion, and then breaks off said metal wire through said perforate, has avoided short circuit or discharge between the drive wire of viewing area.
Description of drawings
Fig. 1 is a kind of electrical block diagram of the liquid crystal indicator of prior art;
Fig. 2 is the electrical block diagram of liquid crystal indicator of the present invention;
Fig. 3 is a liquid crystal indicator shown in Figure 2 cross-sectional view along A-A ' line.
Embodiment
For making the object of the invention, characteristic more obviously understandable, be further described below in conjunction with the accompanying drawing specific embodiments of the invention.
Core concept of the present invention is; Through on the protective seam on the metal wire of at least one end of each on-off element of the non-display area of liquid crystal indicator, forming perforate; Make said metal wire directly contact and by spontaneous corrosion, thereby break off said metal wire with short circuit between the drive wire of avoiding the viewing area or discharge with outside air.
Please consult Fig. 2 and Fig. 3 simultaneously, Fig. 2 is the electrical block diagram of liquid crystal indicator of the present invention; Fig. 3 is a liquid crystal indicator shown in Figure 2 cross-sectional view along A-A ' line.This liquid crystal indicator comprises a substrate, and said substrate comprises adjacent viewing area 20 and non-display area 30.Be formed with thin film transistor (TFT) array in the said viewing area 20, said thin film transistor (TFT) array comprises controlling grid scan line arranged in a crossed manner and data line, is formed with thin film transistor (TFT) at the infall of said controlling grid scan line and said data line.In the present embodiment, said controlling grid scan line and said data line are lip-deep many drive wires that are arranged at said viewing area 20.Said non-display area 30 surfaces are provided with at least one group of on-off element, at least one check point and many metal line 10.Said in the present embodiment non-display area 30 surfaces are provided with three groups of on-off elements and three check points, i.e. first group of on-off element 41, second group of on-off element 42, the 3rd group of on-off element 43 and first check point 51, second check point 52, the 3rd check point 53.Certainly, 1 group of on-off element and a check point or more on-off element and check point organized also can only be set in other embodiments of the invention.Non-display area 30 also is provided with many metal line 10, is coated with protective seam 11 on said many metal line 10.Said 3 groups of on-off elements comprise a plurality of on-off elements respectively.Be electrically connected through a metal wire 10 between one end of each on-off element in first group of on-off element 41 and the drive wire of said viewing area 20, and the other end is electrically connected through another metal wire 10 with first check point 51.Be electrically connected through a metal wire 10 between one end of each on-off element in second group of on-off element 42 and the drive wire of said viewing area 20, and the other end is electrically connected through another metal wire 10 with second check point 52.Be electrically connected through a metal wire 10 between one end of each on-off element in the 3rd group of on-off element 43 and the drive wire of said viewing area 20, and the other end is electrically connected through another metal wire 10 with the 3rd check point 53.Among Fig. 2, the protective seam 11 on the metal wire 10 at the two ends of said each on-off element all is formed with perforate 12 so that said metal wire 10 directly contacts with outside air.
Optional, said on-off element is a thin film transistor (TFT).In the course of normal operation of said liquid crystal indicator; Make said metal wire 10 by the outside air spontaneous corrosion through said perforate 12; And then break off said metal wire 10; Avoided between the drive wire of viewing area 20 short circuit or discharge because of interior two above on-off element characteristics bad (that is, turn-offing fully) on the same group.Preferably, said metal wire 10 adopts the relatively poor metal material of corrosion resistivity.Said metal material is the alloy that a kind of or two or more at least above-mentioned metal materials among Cr, W, Ti, Ta, Mo, Al, the Cu are combined to form.
Among Fig. 3, on metal wire 10, be formed with protective seam 11, on said protective seam 11, be formed with perforate 12.Said perforate 12 is between the drive wire of on-off element and viewing area 20, and the metal wire 10 between said perforate 12 and said drive wire is formed with first gap 131.On the protective seam 11 on the metal wire 10 of said first gap 131 both sides, all be formed with via hole 14, and through said via hole 14 with one formation with protective seam 11 on articulamentum 151 be electrically connected.Preferably, the material that constitutes said articulamentum 151 is the stronger conductive material of corrosion resistivity.Said conductive material can be tin indium oxide (ITO).Because said articulamentum 151 corrosion resistivities are stronger, corrosion is not easy diffusion, therefore can prevent that spontaneous corrosion from developing to said drive wire, avoids excessive corrosion.Simultaneously, the metal wire 10 between said perforate 12 and said on-off element also is formed with second gap 132.All be formed with via hole 14 on the protective seam 11 on the metal wire 10 of said second gap 132 both sides, and be electrically connected with articulamentum 151 on the protective seam 11 through said via hole 14 and formation.Can prevent that thus spontaneous corrosion from developing to said on-off element, avoid excessive corrosion.In other embodiments of the invention, also can be only forming gaps at said perforate 12 and metal wire 10 between the said drive wire also is electrically connected through 1.
Continue to consult Fig. 2, have on the metal wire 10 between on-off element and the check point and on-off element and viewing area 20 drive wires between identical structure on the metal wire 10.Then the metal wire 10 between said another perforate 12 and said check point is formed with the 3rd gap.All be formed with via hole on the protective seam 11 of the metal wire 10 of said the 3rd gap both sides, and be electrically connected with an articulamentum 151, can prevent that thus spontaneous corrosion from developing to said check point, avoids excessive corrosion through said via hole.Simultaneously; Metal wire 10 between said another perforate 12 and said on-off element is formed with the 4th gap; All be formed with via hole 14 on the protective seam 11 of the metal wire 10 of said the 4th gap both sides; And be electrically connected with an articulamentum 151 through said via hole 14, can prevent that thus spontaneous corrosion from developing to said on-off element, avoids excessive corrosion.In other embodiments of the invention; Can be only form gaps with metal wire 10 between the said check point and is electrically connected, can also also be electrically connected with metal wire 10 formation gaps between the said on-off element through an articulamentum 151 in said another perforate 12 through an articulamentum 151 in said another perforate 12.
In addition; In other embodiments of the invention; Perforate 12 can be only on the protective seam 11 on the metal wire 10 between the drive wire of each on-off element and viewing area 20, formed, perforate 12 can also be only on the protective seam on the metal wire between each on-off element and the check point 10 11, formed.
In sum; Liquid crystal indicator provided by the invention; Be electrically connected through a metal wire 10 between one end of each on-off element in every group of on-off element of non-display area 20 and the drive wire of viewing area 20; And the other end is electrically connected through another metal wire 10 with check point; Through on the protective seam 11 on the metal wire 10 of at least one end of said each on-off element, being formed with perforate so that said metal wire 10 directly contacts with outside air, thus in the course of normal operation of liquid crystal indicator, said metal wire 10 through said perforate by the outside air spontaneous corrosion; And then break off said metal wire 10, avoided short circuit or discharge between the drive wire of viewing area 20.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. liquid crystal indicator; Said liquid crystal indicator comprises a substrate; Said substrate comprises adjacent viewing area and non-display area, and surface, said viewing area is provided with many drive wires, and said non-display area surface is provided with at least one group of on-off element, at least one check point and many metal line; Be coated with protective seam on said many metal line; Said at least one group of on-off element comprises a plurality of on-off elements, is electrically connected through a metal wire between an end of each on-off element and the drive wire of said viewing area, and the other end of said on-off element is electrically connected through another metal wire with said at least one check point; It is characterized in that, on the protective seam on the metal wire of at least one end of said each on-off element, be formed with perforate so that said metal wire directly contacts with outside air; Said metal wire adopts the metal material of corrosion resistivity difference to process.
2. liquid crystal indicator as claimed in claim 1; It is characterized in that; Said perforate is between said on-off element and said drive wire; Metal wire between said perforate and said drive wire is formed with first gap, and the metal wire of the said first gap both sides is electrically connected through an articulamentum.
3. liquid crystal indicator as claimed in claim 2 is characterized in that, the metal wire between said perforate and said on-off element is formed with second gap, and the metal wire of the said second gap both sides is electrically connected through an articulamentum.
4. liquid crystal indicator as claimed in claim 1; It is characterized in that; Said perforate is between said on-off element and said at least one check point; Metal wire between said perforate and said at least one check point is formed with the 3rd gap, and the metal wire of said the 3rd gap both sides is electrically connected through an articulamentum.
5. liquid crystal indicator as claimed in claim 4 is characterized in that, the metal wire between said perforate and said on-off element is formed with the 4th gap, and the metal wire of said the 4th gap both sides is electrically connected through an articulamentum.
6. liquid crystal indicator as claimed in claim 1 is characterized in that, said metal material is the alloy that a kind of or two or more at least above-mentioned metal materials among Cr, W, Ti, Ta, Mo, Al, the Cu are combined to form.
7. like claim 2 or 4 described liquid crystal indicators, it is characterized in that the material of said formation articulamentum is the conductive material of corrosion resistivity.
8. liquid crystal indicator as claimed in claim 7 is characterized in that said articulamentum is formed on the said protective seam.
9. liquid crystal indicator as claimed in claim 8 is characterized in that, comprises that further two are formed at the via hole of protective seam, and these metal wire gap two ends are connected with this articulamentum through this via hole.
10. liquid crystal indicator as claimed in claim 7 is characterized in that, said conductive material is a tin indium oxide.
11. liquid crystal indicator as claimed in claim 1 is characterized in that, said on-off element is a thin film transistor (TFT).
12. liquid crystal indicator as claimed in claim 1 is characterized in that, said drive wire is controlling grid scan line or data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101968998A CN102033373B (en) | 2009-09-30 | 2009-09-30 | Liquid crystal display device having a plurality of pixel electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101968998A CN102033373B (en) | 2009-09-30 | 2009-09-30 | Liquid crystal display device having a plurality of pixel electrodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102033373A CN102033373A (en) | 2011-04-27 |
| CN102033373B true CN102033373B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101968998A Active CN102033373B (en) | 2009-09-30 | 2009-09-30 | Liquid crystal display device having a plurality of pixel electrodes |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106647054B (en) * | 2016-11-21 | 2019-08-13 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display |
| CN107579103A (en) * | 2017-08-31 | 2018-01-12 | 京东方科技集团股份有限公司 | A kind of array base palte, display panel, display device and preparation method thereof |
| CN112987351B (en) * | 2021-02-10 | 2022-08-05 | 深圳市华星光电半导体显示技术有限公司 | Short-circuit bar, display panel and display device |
| CN113506519B (en) * | 2021-09-09 | 2021-12-24 | 惠科股份有限公司 | Display panel and test terminal thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7110057B2 (en) * | 2001-12-26 | 2006-09-19 | Lg. Philips Lcd Co., Ltd. | Liquid crystal display device |
| CN101252136A (en) * | 2008-03-31 | 2008-08-27 | 昆山龙腾光电有限公司 | Thin-film transistor substrate and LCD device with the same |
-
2009
- 2009-09-30 CN CN2009101968998A patent/CN102033373B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7110057B2 (en) * | 2001-12-26 | 2006-09-19 | Lg. Philips Lcd Co., Ltd. | Liquid crystal display device |
| CN101252136A (en) * | 2008-03-31 | 2008-08-27 | 昆山龙腾光电有限公司 | Thin-film transistor substrate and LCD device with the same |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-287662A 2002.10.04 |
| JP特开2003-114447A 2003.04.18 |
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Effective date of registration: 20210224 Address after: 5-6 / F, building D, huilongda Industrial Park, Shuitian Private Industrial Park, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Haiyun Communication Co.,Ltd. Address before: 201201, 889, Qing Qing Road, Shanghai, Pudong New Area Patentee before: SHANGHAI TIANMA MICROELECTRONICS Co.,Ltd. |
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Effective date of registration: 20210311 Address after: Room a-430, 4 / F, block a, phase II, Guangxi Huike Technology Co., Ltd., No. 336, Beihai Avenue East extension line, Beihai Industrial Park, Guangxi Zhuang Autonomous Region Patentee after: BEIHAI HKC PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 5-6 / F, building D, huilongda Industrial Park, Shuitian Private Industrial Park, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Haiyun Communication Co.,Ltd. |