CN2745315Y - A circuit board capable of preventing static discharge - Google Patents
A circuit board capable of preventing static discharge Download PDFInfo
- Publication number
- CN2745315Y CN2745315Y CN 200420081159 CN200420081159U CN2745315Y CN 2745315 Y CN2745315 Y CN 2745315Y CN 200420081159 CN200420081159 CN 200420081159 CN 200420081159 U CN200420081159 U CN 200420081159U CN 2745315 Y CN2745315 Y CN 2745315Y
- Authority
- CN
- China
- Prior art keywords
- circuit board
- conductive layer
- static discharge
- insulating barrier
- directly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a circuit board capable of preventing static discharge, which is provided with an insulation layer. The insulation layer is provided with a conducting layer. The insulation layer isolates the conducting layer and the circuit board. In addition, the conducting layer is properly lengthened corresponding to the insulation layer. The lengthened part is directly connected with the ground electricity of large area. When striking on the conducting layer, the high voltage static electricity can directly be conducted to the ground with large area along the conducting layer, which effectively prevents devices and lines on the circuit board from being damaged because of the electrostatic discharge.
Description
[technical field]
The utility model relates to a kind of circuit board, or rather, relates to a kind of circuit board that can prevent static discharge.
[background technology]
Collapsible mobile telephone more and more is subjected to user's welcome on market at present, but along with such as very color display screen, the high-pixel camera head, the application of elements such as photoflash lamp, line constantly increases between the Collapsible mobile telephone upper and lower plates, owing to be subjected to the restriction of mobile phone casing design, connecting plate (Link Board) width that connects upper and lower plates in the Collapsible mobile telephone is limited, and because connecting plate adopts FPC (FlexiblePrinted Circuit, flexible print circuit) material is made, be subjected to the influence of processing technology and production cost, FPC flaggy number has certain restriction, therefore the ground wire on main ground (Main GND) that is used to connect the ground (GND) of upper plate and lower plate on the connecting plate is just wide inadequately, on, ground switching performance between the lower plate thereby be subjected to significantly weakening, when high-pressure electrostatic impacts on the upper plate, Collapsible mobile telephone just can't in time conduct to the on the ground main of lower plate with high-pressure electrostatic by the ground wire on the connecting plate, thereby causes the mobile phone display abnormality, fall problems such as net even deadlock.
The prior art relevant with the utility model, can consult No. the 01145306.0th, the Chinese patent application of December 31 calendar year 2001 application, this invention has disclosed a kind of earthing device that prevents static discharge, in this device, the flexible print circuit that is electrically connected on the liquid crystal display module is outward extended with a metal grounded part at least, described metal grounded part is electrically connected with the main body inner surface, and described main body inner surface is coated with and is coated with electric material.Though this scheme has increased contact area, but still do not solve wide inadequately this problem of ground wire on the connecting plate, in this case, if there is static directly to impact on the board component, high-pressure electrostatic still can not conduct to the on the ground main of mobile phone lower plate rapidly, and that the ground of upper plate bears electrostatic capacity is limited, can produce electrostatic discharge problem equally, and mobile phone is caused damage.
[utility model content]
The purpose of this utility model is to provide a kind of circuit board that prevents static discharge, and the ground switching performance that can effectively overcome between the upper and lower plate is got well this defective inadequately.
The purpose of this utility model is achieved through the following technical solutions: a kind of circuit board that prevents static discharge, it is characterized in that: described circuit board is provided with an insulating barrier, described insulating barrier is provided with a conductive layer, described insulating barrier comes described conductive layer and described circuit boards, described in addition conductive layer is with respect to described insulating barrier proper extension, described prolongation directly with contact in large area.
Described insulating barrier can be an insulation polyester film, and described conductive layer can be a conducting adhesive cloth.
Described conducting adhesive cloth directly is produced on described insulation polyester film.
Described insulation polyester film and conducting adhesive cloth are fixed on the described circuit board by stickum.
Described circuit board can be the upper plate in the Collapsible mobile telephone folding part.
Described circuit board can be to be electrically connected in the folding part connecting plate between the lower plate in the upper plate and main part in the Collapsible mobile telephone.
Described can be the screening cover on the lower plate in the Collapsible mobile telephone main part in large area.
Compared with prior art, the utility model is by being provided with an insulating barrier on circuit board, one conductive layer is set on described insulating barrier again, and described conductive layer with respect to the prolongation of described insulating barrier directly be electrically connected in large area, make to impact originally and directly impact on conductive layer at the static on the circuit board, conduct in large area fast along conductive layer then and go up, the infringement of having avoided components and parts on the circuit board and circuit to be subjected to effectively owing to static discharge.
[description of drawings]
Fig. 1 is a kind of schematic cross-section that prevents the circuit board of static discharge of the utility model;
The schematic cross-section of the board application that Fig. 2 prevents static discharge for the utility model is a kind of in Collapsible mobile telephone the time.
[embodiment]
See also shown in Figure 1ly, orlop is a circuit board 3 among the figure, and circuit board 3 can be the PCB (Printed Circuit Board, printed circuit board (PCB)) that is equipped with certain components and parts, also can be the soft board that adopts the FPC material.The intermediate layer is an insulating barrier 2, and insulating barrier 2 covers on the circuit board 3, generally adopts insulation polyester film as insulating barrier, and insulation polyester film has certain antistatic performance, to prevent by electrostatic breakdown.The superiors are conductive layers 1 among the figure, and conductive layer 1 covers on the insulating barrier 2, and conductive layer 1 can be a conducting adhesive cloth, keep apart because conductive layer 1 is insulated layer 2 with circuit board 3, therefore can not cause the short circuit on the circuit.Conductive layer 1 is with respect to insulating barrier 2 proper extensions, its prolongation directly with is electrically connected (not showing among the figure) in large area, owing to the conducting adhesive cloth itself as conductive layer 1 has viscosity, so can directly stick in large area and go up.When high-pressure electrostatic directly impacts on conductive layer 1, owing to be provided with the insulating barrier 2 of insulation of one deck tool and antistatic performance between conductive layer 1 and the circuit board 3, therefore high-pressure electrostatic can not impact on the components and parts of circuit board 3, only can conduct in large area and go up, the infringement of having avoided components and parts on the circuit board 3 and circuit to be subjected to effectively owing to static discharge along conductive layer 1.
In the utility model, in order to fix insulating barrier 2 and conductive layer 1 easily, they directly can be produced on together, directly insulating barrier 2 and conductive layer 1 are fixed on the circuit board 3 by stickum such as viscose glue etc. then.
See also shown in Figure 2ly, a kind of circuit board of static discharge that prevents of the utility model can be applicable in the Collapsible mobile telephone, and the superiors and intermediate layer are respectively conductive layer 1 and insulating barrier 2 among the figure.The part that orlop is thicker is the upper plate 4 in the Collapsible mobile telephone folding part, the part that is connected with upper plate 4 is to be electrically connected in the folding part connecting plate 5 between the lower plate in the upper plate and main part in the Collapsible mobile telephone, wherein upper plate 4 is PCB, connecting plate 5 is made up of several layers FPC, be generally four layers (not showing among the figure), these four layers of FPC are except that two ends are fixed together, and remainder is disconnected from each other.Insulating barrier 2 covers other All Ranges and the whole connecting plate 5 except that the display screen and the first-class position of making a video recording in the upper plate 4.Usually the screening cover on the lower plate is considered in large area in the Collapsible mobile telephone main part, and conductive layer 1 directly sticks on the screening cover with respect to the prolongation of insulating barrier 2.Insulating barrier 2 and conductive layer 1 directly are fixed on the upper plate 4 by viscose glue, and for fear of connecting plate connect on 5 with behind the viscose glue since frequent turnover problem such as cause easily fractureing only coat viscose glue with upper plate 4 junctions and connecting plate 5 with the lower plate junction insulating barrier 2 and conductive layer 1 sticked on the connecting plate 5 at connecting plate 5.Because insulating barrier 2 adopts insulation polyester film, conductive layer 1 adopts conducting adhesive cloth, and insulation polyester film and conducting adhesive cloth are all more frivolous and pliability is pretty good, therefore can not give the use of connecting plate 5 and cause adverse effect useful life, insulating barrier 2 and conductive layer 1 can not rupture owing to often following connecting plate 5 to turn down together yet simultaneously.
When directly sticking to screening cover on respect to the prolongation of insulating barrier 2 conductive layer 1, although the components and parts on the lower plate all are housed in the screening cover the inside basically, but may touch some components and parts outside the screening cover for fear of conductive layer 1, can also be at connecting plate 5 and lower plate junction proper extension insulating barrier 2 so that these components and parts and conductive layer 1 be kept apart, but in order to guarantee that conductive layer 1 contacts with screening cover well, conductive layer 1 also needs proper extension, to guarantee still having certain prolongation with respect to insulating barrier 2.
In Collapsible mobile telephone, when high-pressure electrostatic directly impacts on the conductive layer 1 on upper plate 4, to be directly conducted on the screening cover of lower plate along conductive layer 1, because conductive layer 1 has covered whole connecting plate 5, the ground line width of its width on the connecting plate 5, therefore conductive layer 1 has obtained very big improvement with the ground switching performance between the lower plate compared to the ground switching performance between upper plate 4 and the lower plate, the static conduction of velocity is accelerated greatly, thereby can in time static be conducted on the screening cover from conductive layer 1, prevent that mobile phone is owing to static discharge suffers damage.
The utility model is by being provided with an insulating barrier on circuit board, one conductive layer is set on described insulating barrier again, and described conductive layer with respect to the prolongation of described insulating barrier directly be electrically connected in large area, make to impact originally and directly impact on conductive layer at the static on the circuit board, conduct in large area fast along conductive layer then and go up, the infringement of having avoided components and parts on the circuit board and circuit to be subjected to effectively owing to static discharge.
Claims (7)
1. circuit board that can prevent static discharge, it is characterized in that: described circuit board is provided with an insulating barrier, described insulating barrier is provided with a conductive layer, described insulating barrier comes described conductive layer and described circuit boards, described in addition conductive layer is with respect to described insulating barrier proper extension, described prolongation directly be electrically connected in large area.
2. the circuit board that prevents static discharge as claimed in claim 1 is characterized in that: described insulating barrier can be an insulation polyester film, and described conductive layer can be a conducting adhesive cloth.
3. the circuit board that prevents static discharge as claimed in claim 2 is characterized in that: described conducting adhesive cloth directly is produced on described insulation polyester film.
4. the circuit board that prevents static discharge as claimed in claim 3 is characterized in that: described insulation polyester film and conducting adhesive cloth are fixed on the described circuit board by stickum.
5. as claim 1,2, the 3 or 4 described circuit boards that prevent static discharge, it is characterized in that: described circuit board can be the upper plate in the Collapsible mobile telephone folding part.
6. as claim 1,2, the 3 or 4 described circuit boards that prevent static discharge, it is characterized in that: described circuit board can be to be electrically connected in the folding part connecting plate between the lower plate in the upper plate and main part in the Collapsible mobile telephone.
7. as claim 1,2, the 3 or 4 described circuit boards that prevent static discharge, it is characterized in that: described can be the screening cover on the lower plate in the Collapsible mobile telephone main part in large area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081159 CN2745315Y (en) | 2004-07-27 | 2004-07-27 | A circuit board capable of preventing static discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081159 CN2745315Y (en) | 2004-07-27 | 2004-07-27 | A circuit board capable of preventing static discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2745315Y true CN2745315Y (en) | 2005-12-07 |
Family
ID=35580090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420081159 Expired - Fee Related CN2745315Y (en) | 2004-07-27 | 2004-07-27 | A circuit board capable of preventing static discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2745315Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021081735A1 (en) * | 2019-10-29 | 2021-05-06 | 京东方科技集团股份有限公司 | Adhesive tape, vehicle-mounted display module and vehicle-mounted display device |
-
2004
- 2004-07-27 CN CN 200420081159 patent/CN2745315Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021081735A1 (en) * | 2019-10-29 | 2021-05-06 | 京东方科技集团股份有限公司 | Adhesive tape, vehicle-mounted display module and vehicle-mounted display device |
| US11964464B2 (en) | 2019-10-29 | 2024-04-23 | Beijing Boe Optoelectronics Technology Co., Ltd. | Tape, vehicle-mounted display module and vehicle-mounted display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109658831B (en) | Display panel and display device | |
| US10942612B2 (en) | Touch panel and display device including the same | |
| US8531411B2 (en) | Display device | |
| CN109634459B (en) | Organic light emitting display panel and display device | |
| CN112930516B (en) | Display module and display device | |
| CN101825784A (en) | Liquid crystal display apparatus, antistatic method for liquid crystal display apparatus, and electronic apparatus | |
| JP2012089102A (en) | Capacitive touch screen and method for manufacturing the same | |
| US20180018044A1 (en) | Touch sensor and display device having the same | |
| CN1977232A (en) | Hinge for an electronic device | |
| CN111243508A (en) | Display panel, driving circuit thereof and display device | |
| KR100671660B1 (en) | Flexible printed circuits and display device having the same | |
| CN104864310A (en) | Light-emitting device and backlight | |
| US11256359B2 (en) | Touch screen, touch display screen and display device | |
| CN203217211U (en) | Display panel and display device | |
| CN2745315Y (en) | A circuit board capable of preventing static discharge | |
| CN210245029U (en) | Display panel, driving circuit thereof and display device | |
| US8687369B2 (en) | Apparatus for creating resistive pathways | |
| CN109709697B (en) | Display panel and display device | |
| CN110827673A (en) | Display substrate and display device | |
| CN110673408A (en) | Display screen | |
| CN114596795B (en) | Display module and display device | |
| US11126314B2 (en) | Touch substrate, touch control display apparatus, and method of fabricating a touch substrate | |
| US20100053839A1 (en) | Electronic device with electrostatic protection structure | |
| CN202435710U (en) | Improved circuit board with ESD (Electro-Static Discharge) protective structure | |
| CN112820765A (en) | Display panel and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Diao Wenkui Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |