CN101231398A - Liquid crystal panel having electrostatic braking measure - Google Patents
Liquid crystal panel having electrostatic braking measure Download PDFInfo
- Publication number
- CN101231398A CN101231398A CNA2007100026497A CN200710002649A CN101231398A CN 101231398 A CN101231398 A CN 101231398A CN A2007100026497 A CNA2007100026497 A CN A2007100026497A CN 200710002649 A CN200710002649 A CN 200710002649A CN 101231398 A CN101231398 A CN 101231398A
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- vcom
- cabling
- liquid crystal
- crystal panel
- drive
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Abstract
The invention relates to a liquid crystal panel with anti-electrostatic effect, which is implemented by defining an active display area (A/A, Active Area) in a liquid crystal plane; and arranging a Vcom route and at least one driving IC respectively on a substrate in the liquid crystal panel. The Vcom route is connected with the driving IC, surrounds the active display area and then is electrically connected with a shared electrode on a relevant upper substrate to provide a stable reference voltage. Additionally, the Vcom route has an anti-electrostatic mechanism close to one end of the driving IC, which can efficiently attenuate or eliminate the electrostatic surge discharged to the Vcom route, thereby protecting the driving IC against the attack of electrostatic surges penetrating through the Vcom route.
Description
Technical field
The invention relates to a kind of liquid crystal panel, refer to a kind of liquid crystal panel that electrostatic braking measure is arranged that on the Vcom cabling, designs especially.
Background technology
As shown in Figure 8, exposure has the synoptic diagram of a liquid crystal panel (70), define an effective viewing area (A/A who forms by plural picture element on the liquid crystal panel (70), Active Area), this liquid crystal panel (70) is provided with drive IC (71) and connects the Vcom cabling (72) of aforementioned drive IC (71) in a substrate wherein, this Vcom cabling (72) also is electrically connected to a common electrode of relative upper substrate, except that a stable reference voltage is provided, also is used to get rid of the usefulness of static surging at present.
As shown in Figure 9, mainly be to make the scanning linear of each picture element of the last connection of liquid crystal panel (70) or the pin of data line (not shown) and drive IC (71) be connected to Vcom cabling (72) through transistor T 1, T2.In other words, the design concept of these electrostatic discharged mechanism is when scanning linear, data line or drive IC (71) pin suffers the invasion and attack of static surging, utilizes aforementioned emission mechanism to arrive on the Vcom cabling (72), to reach the purpose of protection electrostatic discharged.Yet; the probably difficult electrostatic defending purpose that reaches distribution of aforementioned electrostatic discharged mechanism; reason is: the static surging is disposed on the Vcom cabling (72); though got rid of scanning linear; electrostatic interference on data line or drive IC (71) pin; but Vcom cabling (72) still takes back to drive IC (71); in case the static surging is disposed on the Vcom upper substrate; then drive IC (71) promptly suffers the interference of static surging unavoidably and abnormal occurrence occurs; this shows; aforementioned existing liquid crystal panel, needs to be further reviewed and seeks feasible solution to the Vcom upper substrate effect of distribution protection to the greatest extent yet electrostatic discharged.
Summary of the invention
Therefore, fundamental purpose of the present invention is at the liquid crystal panel that a kind of tool electrostatic protection effect is provided, and it produces further braking measure for the static surging that is disposed on the Vcom cabling, can prevent effectively that drive IC from attacked by the static surging via the Vcom cabling.
For reaching the major technique means that aforementioned purpose takes is to define an effective viewing area (A/A in a liquid crystal panel, Active Area), and be arranged with Vcom cabling and at least one drive IC at least one substrate in liquid crystal panel, this Vcom cabling is to be connected with drive IC, and has static inhibition means in an end of contiguous drive IC;
When the static surging is discharged into the Vcom cabling, must give effective attenuation or eliminating, avoid the static surging to see through the Vcom cabling thus and attack drive IC and occur unusual.
The foregoing liquid crystal panel is to be provided with drive IC, Vcom cabling and plural connection pad in infrabasal plate, this Vcom cabling also sees through the common electrode that connection pad is electrically connected to upper substrate, and these static inhibition means are to be provided with bilateral diode between a connection pad that is close to drive IC and an earth terminal.
Aforementioned static inhibition means are to make the Vcom cabling form a high line resistance section in an end of contiguous drive IC, are disposed to static surging on the Vcom cabling with decay.
The continuous tortuous line segment of aforementioned high line resistance Duan Weiyi higher density is to form bigger line resistance.
Aforementioned high line resistance Duan Weiyi compares other end of Vcom cabling and is the wide line segment than big live width, with the bigger line resistance of generation.
Aforementioned static inhibition means are to be formed with a ground metal layer on the substrate of liquid crystal panel, this ground metal layer is the end with respect to the contiguous drive IC of Vcom cabling, to form a coupling capacitance, because ground metal layer is to be connected to earth terminal, so the Vcom cabling will constitute an electrostatic discharged path between an end that is close to drive IC and earth terminal.
Aforementioned ground metal layer can be defined by the first metal layer in the thin film transistor (TFT) processing procedure in the liquid crystal panel (metal1) or second metal level (metal 2) and be formed.
Aforementioned static inhibition means are relays, and it utilizes Vcom signal controlling one electric signal on the Vcom cabling whether to deliver to drive IC.
Aforementioned static inhibition means are to be provided with a surge absorber between an end of the contiguous drive IC of Vcom cabling and this drive IC.
The foregoing liquid crystal panel is provided with a circuit board in an end that is provided with drive IC, and this Vcom cabling one end is to extend on the circuit board, takes back drive IC again, and these static inhibition means are provided in a side of on the circuit board.
Description of drawings
Fig. 1: the organigram that is a preferred embodiment of the present invention.
Fig. 2: the planar configuration synoptic diagram that is a preferred embodiment of the present invention.
Fig. 3: be the first possible embodiments synoptic diagram that static of the present invention suppresses means.
Fig. 4: be the second possible embodiments synoptic diagram that static of the present invention suppresses means.
Fig. 5: be the 3rd possible embodiments synoptic diagram that static of the present invention suppresses means.
Fig. 6: be the 4th possible embodiments synoptic diagram that static of the present invention suppresses means.
Fig. 7: the planar configuration synoptic diagram that is the present invention's second preferred embodiment.
Fig. 8: the planar configuration synoptic diagram that is existing liquid crystal panel.
Fig. 9: the electrostatic defending measure synoptic diagram that is existing liquid crystal panel control module.
The primary clustering symbol description
(10) liquid crystal panel
(101) infrabasal plate (102) common electrode
(103) connection pad (11) Vcom cabling
(12) drive IC (13) ground metal layer
(110) high line resistance section (111) tortuous line segment
(112) wide line segment (13) ground metal layer
(20) relay (30) circuit board
(70) liquid crystal panel (71) drive IC
(72) Vcom cabling
Embodiment
As shown in Figure 1, exposure has the planar configuration synoptic diagram of a liquid crystal panel (10), have plural number on this liquid crystal panel (10) and be the picture element (not shown) of arranged, and the zone definitions at this picture element place goes out an effective viewing area (A/A, Active Area), as known to, liquid crystal panel (10) is to be become by two relative substrate in batch, and be arranged with Vcom cabling (11) and at least one drive IC (12) on the substrate (101) therein, this Vcom cabling (11) is to be connected with drive IC (12), and carry out a static at an end of contiguous drive IC (12) and suppress means, use effective attenuation or eliminating, avoid the static surging to see through Vcom cabling (11) thus and attack drive IC (12) and occur unusual.
In present embodiment, mainly be on the infrabasal plate (101) of liquid crystal panel (10), to be provided with drive IC (12), the connection pad (103) of Vcom cabling (11) and plural number, wherein this connection pad (103) can be a gold medal connection pad (Au Pad), and this connection pad (103) is in order to this Vcom cabling (11) is electrically connected with common electrode (102) on the upper substrate (not shown), make Vcom cabling (11) be electrically connected to the common electrode of upper substrate (102), in the present embodiment, aforesaid static inhibition means are to be located between the connection pad (103) and earth terminal (GND) of a contiguous drive IC (12), it is by bilateral diode D1, D2 constitutes, thus, when Vcom cabling (11) is gone up the big electric current of experience, this big electric current will be through common electrode (102) through connection pad (103), bilateral diode D1, D2 conducts to earth terminal GND, with the big electric current of effective inhibition because of the static focus generation.
Except that previous embodiment, Fig. 2 discloses the another possible embodiments that has aforementioned static to suppress means, mainly be to utilize higher line resistance, avoid the static surging to enter the unstable situation that drive IC (12) is caused with the static surging of decay through Vcom cabling (11) discharging.Its principle of work is to make aforementioned Vcom cabling (11) form a high line resistance section (110) in an end of contiguous drive IC, is disposed to static surging on the Vcom cabling with decay.Wherein a kind of concrete practice is to make Vcom cabling (11) form the continuous tortuous line segment (111) (as shown in Figure 3) of a higher density in an end of contiguous drive IC (12), so that bigger line resistance to be provided.The another kind of concrete practice of aforementioned high line resistance section (110), be a end in Vcom cabling (11) in contiguous drive IC (12) form one compare Vcom cabling (11) in addition end be the wide line segment (112) (as shown in Figure 4) of big live width, utilize this practice also can produce bigger line resistance, be disposed to the electric current of IC with minimizing.
See also shown in Figure 5 again, be the another embodiment that aforementioned static suppresses means, be on the substrate of liquid crystal panel (10), to be formed with a ground metal layer (13), this ground metal layer (13) is parallel and mutual isolation with an end of the contiguous drive IC of Vcom cabling (12), so promptly constitute two parallel-plates under the state, thereby constitute a coupling capacitance, aforementioned again ground metal layer (13) also further is connected to earth terminal, therefore Vcom cabling (11) will constitute an electrostatic discharged path between an end that is close to drive IC (12) and earth terminal, when for example data line, electrostatic discharged when the Vcom cabling (11) on the sweep trace can further see through aforesaid electrostatic discharged path and be discharged into earth terminal.
And aforementioned ground metal layer (13) can be defined by the first metal layer (metal 1) of the thin film transistor (TFT) processing procedure of liquid crystal panel or second metal level (metal 2) and formed.In addition, also can paste a metallic film on substrate, metallic film is isolated mutually with an end of the contiguous drive IC of Vcom cabling (11) (12) and is relative, is connected with earth terminal in addition, so also can constitute one is connected to the coupling capacitance of earth terminal, thereby constitutes an electrostatic discharged path.
See also shown in Figure 6 again, aforementioned static suppresses means can establish a relay (20) between Vcom cabling (11) and drive IC (12), the excitatory end of this relay (20) is to be connected with Vcom cabling (11), its contact two ends connect respectively positive supply (+5V) and drive IC (12), thus by the control of Electric potentials positive supply on the Vcom cabling (11) (+5V) whether deliver to drive IC (12), see through relay (20) thus and can form buffer action, avoid that the static surging is unprocessed to be delivered to drive IC (12) and impact the static surging on the Vcom cabling (11).Except that adopting relay, this Vcom cabling (11) can be established with a surge absorber between an end that is close to drive IC (12) and this drive IC (12), also can be used to suppress the static surging.
See also shown in Figure 7, it is another embodiment of the present invention, mainly be to be provided with a circuit board (30) in an end that is provided with drive IC (12) in foregoing liquid crystal panel (10), these Vcom cabling (11) one ends are to extend on the circuit board (30), take back drive IC (12) again, under this state, an end of the contiguous drive IC of Vcom cabling (11) (12) is to be positioned on the circuit board (30), thus before take off the various embodiment that described static suppresses means and all can go up realization at circuit board (30).
Have for affiliated field and to know usually for the knowledgeable that the difference correction and the variation of doing according to the present invention all do not depart from scope of the present invention and spirit.Though the present invention has narrated particular specific embodiment, it must be appreciated that the present invention should be limited on these certain specific embodiments undeservedly.Implementing of the present invention having stated aspect the pattern, apparent and easy to know different the correction also is included within the claim for the person with usual knowledge in their respective areas.
Claims (17)
1. the liquid crystal panel of a tool electrostatic protection effect comprises:
One substrate has an effective viewing area, and is provided with at least one Vcom cabling and at least one drive IC in non-this effective viewing area part, and this Vcom cabling is to be connected with this drive IC; And
One static suppresses means, is located at an end of contiguous this drive IC of this Vcom cabling, makes when external static surging is discharged into the Vcom cabling, must give effective attenuation or eliminating, avoids the static surging to see through the Vcom cabling thus and attacks drive IC and occur unusual.
2. have the liquid crystal panel of electrostatic protection effect according to claim 1, it is characterized in that: this substrate more comprises plural connection pad, the signal that this Vcom cabling is transmitted sees through those connection pads at least, and one of them is electrically connected to the common electrode of another substrate that subtend is provided with, and these static inhibition means are to be provided with at least one group of reverse diode that is connected in series between a connection pad wherein and the earth terminal of contiguous this drive IC in those connection pads.
3. have the liquid crystal panel of electrostatic protection effect according to claim 1, it is characterized in that: these static inhibition means are to make the Vcom cabling form a high line resistance section in an end of contiguous drive IC, are disposed to static surging on the Vcom cabling with decay.
4. as the liquid crystal panel of tool electrostatic protection effect as described in the claim 3, it is characterized in that: the continuous tortuous line segment of this high line resistance Duan Weiyi, to form bigger line resistance.
5. as the liquid crystal panel of tool electrostatic protection effect as described in the claim 3, it is characterized in that: this high line resistance Duan Weiyi compare the Vcom cabling in addition end be the wide line segment of big live width, to produce bigger line resistance.
6. have the liquid crystal panel of electrostatic protection effect according to claim 1, it is characterized in that: these static inhibition means are to be formed with a ground metal layer on the substrate of liquid crystal panel, this ground metal layer is the end with respect to the contiguous drive IC of Vcom cabling, forming a coupling capacitance, and this ground metal layer is to be connected to this earth terminal.
7. as the liquid crystal panel of tool electrostatic protection effect as described in the claim 6, it is characterized in that: this ground metal layer is defined by the first metal layer in the thin film transistor (TFT) processing procedure in the liquid crystal panel or second metal level and is formed.
8. have the liquid crystal panel of electrostatic protection effect according to claim 1, it is characterized in that: these static inhibition means are relays, and it utilizes Vcom signal controlling one electric signal on the Vcom cabling whether to deliver to drive IC.
9. have the liquid crystal panel of electrostatic protection effect according to claim 1, it is characterized in that: these static inhibition means are to be provided with a surge absorber between an end of the contiguous drive IC of Vcom cabling and this drive IC.
10. have the liquid crystal panel of electrostatic protection effect according to claim 1, it is characterized in that: this Vcom cabling to small part around this effective viewing area.
11. the liquid crystal panel module of a tool electrostatic protection effect is characterized in that comprising:
One substrate has an effective viewing area, and is provided with at least one Vcom cabling and at least one drive IC in non-this effective viewing area part, and this Vcom cabling is to couple with this drive IC;
One circuit board couples this substrate, and this Vcom cabling extends on this circuit board; And
One static suppresses means, is located on this circuit board and couples this Vcom cabling, makes when external static surging is discharged into the Vcom cabling, must give effective attenuation or eliminating.
12. liquid crystal panel module as tool electrostatic protection effect as described in the claim 11, it is characterized in that: this substrate more comprises plural connection pad, the signal that this Vcom cabling is transmitted sees through those connection pads at least, and one of them is electrically connected to the common electrode of another substrate that subtend is provided with, and these static inhibition means are to be provided with at least one group of reverse diode that is connected in series between a connection pad wherein and the earth terminal of contiguous this drive IC in those connection pads.
13. the liquid crystal panel module as tool electrostatic protection effect as described in the claim 11 is characterized in that: these static inhibition means are to make the Vcom cabling form a high line resistance section in an end of contiguous drive IC, are disposed to static surging on the Vcom cabling with decay.
14. liquid crystal panel module as tool electrostatic protection effect as described in the claim 13, it is characterized in that: these static inhibition means are to be formed with a ground metal layer on the substrate of liquid crystal panel, this ground metal layer is the end with respect to the contiguous drive IC of Vcom cabling, forming a coupling capacitance, and this ground metal layer is to be connected to this earth terminal.
15. as the liquid crystal panel module of tool electrostatic protection effect as described in the claim 13, it is characterized in that: these static inhibition means are relays, it utilizes Vcom signal controlling one electric signal on the Vcom cabling whether to deliver to drive IC.
16. the liquid crystal panel module as tool electrostatic protection effect as described in the claim 13 is characterized in that: these static inhibition means are to be provided with a surge absorber between an end of the contiguous drive IC of Vcom cabling and this drive IC.
17. the liquid crystal panel module as tool electrostatic protection effect as described in the claim 11 is characterized in that: this Vcom cabling to small part around this effective viewing area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100026497A CN101231398A (en) | 2007-01-24 | 2007-01-24 | Liquid crystal panel having electrostatic braking measure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100026497A CN101231398A (en) | 2007-01-24 | 2007-01-24 | Liquid crystal panel having electrostatic braking measure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101231398A true CN101231398A (en) | 2008-07-30 |
Family
ID=39898007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100026497A Pending CN101231398A (en) | 2007-01-24 | 2007-01-24 | Liquid crystal panel having electrostatic braking measure |
Country Status (1)
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| CN (1) | CN101231398A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193259A (en) * | 2010-03-15 | 2011-09-21 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN102967975A (en) * | 2012-11-16 | 2013-03-13 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN103296021A (en) * | 2012-06-29 | 2013-09-11 | 上海天马微电子有限公司 | TFT array substrate |
| US8558822B2 (en) | 2009-03-05 | 2013-10-15 | Wintek Corporation | Liquid crystal display |
| CN103513459A (en) * | 2013-10-14 | 2014-01-15 | 北京京东方光电科技有限公司 | Array substrate and preparing method thereof, display device and preparing method thereof |
| CN103874311A (en) * | 2012-12-12 | 2014-06-18 | 胜华科技股份有限公司 | Composite line structure |
| CN105097847A (en) * | 2015-09-15 | 2015-11-25 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
| US9250489B2 (en) | 2012-11-16 | 2016-02-02 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LCD panel with anti-electrostatic discharge function and LCD device using same |
| CN107505747A (en) * | 2017-07-25 | 2017-12-22 | 武汉华星光电技术有限公司 | A kind of preparation method of array base palte, display panel and substrate |
| CN107742498A (en) * | 2017-11-24 | 2018-02-27 | 京东方科技集团股份有限公司 | Reference voltage circuit, reference voltage provide module and display device |
| CN107807467A (en) * | 2017-11-07 | 2018-03-16 | 深圳市华星光电半导体显示技术有限公司 | Prevent panel periphery cabling from the structure of damage by static electricity occurs |
| CN108335634A (en) * | 2018-03-15 | 2018-07-27 | 华勤通讯技术有限公司 | A kind of flexible circuit board FPC, liquid crystal display die set and display equipment |
| CN112104351A (en) * | 2020-09-03 | 2020-12-18 | Oppo（重庆）智能科技有限公司 | Capacitor key, capacitor key module and electronic device |
| WO2021097926A1 (en) * | 2019-11-20 | 2021-05-27 | Tcl华星光电技术有限公司 | Liquid crystal display device |
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2007
- 2007-01-24 CN CNA2007100026497A patent/CN101231398A/en active Pending
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8558822B2 (en) | 2009-03-05 | 2013-10-15 | Wintek Corporation | Liquid crystal display |
| CN102193259A (en) * | 2010-03-15 | 2011-09-21 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN102193259B (en) * | 2010-03-15 | 2015-07-22 | 上海天马微电子有限公司 | Liquid crystal display device |
| CN103296021A (en) * | 2012-06-29 | 2013-09-11 | 上海天马微电子有限公司 | TFT array substrate |
| CN103296021B (en) * | 2012-06-29 | 2016-12-07 | 上海天马微电子有限公司 | TFT array substrate |
| CN102967975B (en) * | 2012-11-16 | 2015-12-09 | 深圳市华星光电技术有限公司 | A kind of display panels and liquid crystal indicator |
| CN102967975A (en) * | 2012-11-16 | 2013-03-13 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| WO2014075331A1 (en) * | 2012-11-16 | 2014-05-22 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| US9250489B2 (en) | 2012-11-16 | 2016-02-02 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | LCD panel with anti-electrostatic discharge function and LCD device using same |
| CN103874311B (en) * | 2012-12-12 | 2017-03-01 | 胜华科技股份有限公司 | Composite line structure |
| CN103874311A (en) * | 2012-12-12 | 2014-06-18 | 胜华科技股份有限公司 | Composite line structure |
| CN103513459A (en) * | 2013-10-14 | 2014-01-15 | 北京京东方光电科技有限公司 | Array substrate and preparing method thereof, display device and preparing method thereof |
| CN105097847B (en) * | 2015-09-15 | 2018-10-23 | 京东方科技集团股份有限公司 | A kind of array substrate, display panel and display device |
| CN105097847A (en) * | 2015-09-15 | 2015-11-25 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
| US10199400B2 (en) | 2015-09-15 | 2019-02-05 | Boe Technology Group Co., Ltd. | Array substrate, display panel and display device |
| CN107505747A (en) * | 2017-07-25 | 2017-12-22 | 武汉华星光电技术有限公司 | A kind of preparation method of array base palte, display panel and substrate |
| WO2019090894A1 (en) * | 2017-11-07 | 2019-05-16 | 深圳市华星光电半导体显示技术有限公司 | Structure for preventing electrostatic damage to peripheral wiring of panel |
| CN107807467A (en) * | 2017-11-07 | 2018-03-16 | 深圳市华星光电半导体显示技术有限公司 | Prevent panel periphery cabling from the structure of damage by static electricity occurs |
| CN107807467B (en) * | 2017-11-07 | 2023-08-22 | 深圳市华星光电半导体显示技术有限公司 | Structure for preventing panel peripheral wiring from electrostatic injury |
| CN107742498A (en) * | 2017-11-24 | 2018-02-27 | 京东方科技集团股份有限公司 | Reference voltage circuit, reference voltage provide module and display device |
| CN107742498B (en) * | 2017-11-24 | 2021-02-09 | 京东方科技集团股份有限公司 | Reference voltage circuit, reference voltage providing module and display device |
| CN108335634A (en) * | 2018-03-15 | 2018-07-27 | 华勤通讯技术有限公司 | A kind of flexible circuit board FPC, liquid crystal display die set and display equipment |
| WO2021097926A1 (en) * | 2019-11-20 | 2021-05-27 | Tcl华星光电技术有限公司 | Liquid crystal display device |
| CN112104351A (en) * | 2020-09-03 | 2020-12-18 | Oppo（重庆）智能科技有限公司 | Capacitor key, capacitor key module and electronic device |
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Open date: 20080730 |