CN202857135U - Short circuit prevention type printed circuit board - Google Patents
Short circuit prevention type printed circuit board Download PDFInfo
- Publication number
- CN202857135U CN202857135U CN 201220578668 CN201220578668U CN202857135U CN 202857135 U CN202857135 U CN 202857135U CN 201220578668 CN201220578668 CN 201220578668 CN 201220578668 U CN201220578668 U CN 201220578668U CN 202857135 U CN202857135 U CN 202857135U
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- CN
- China
- Prior art keywords
- short circuit
- circuit board
- printed circuit
- layer
- ink
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- 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 - Lifetime
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Abstract
The utility model discloses a short circuit prevention type printed circuit board. The short circuit prevention type printed circuit board comprises a component surface for installing components. The component surface comprises a base material layer which is used for insulation and isolation and a copper rubber-covered line layer which is arranged on the base material layer. The component surface is further provided with a solder resist ink layer for isolating the soldering region and the non-soldering region, wherein the solder resist ink layer is coated with a layer of insulation ink. According to the short circuit prevention type printed circuit board of the utility model, on the base of the conventional solder resist ink layer, a layer of insulation ink which is used for preventing the solder resist ink layer portion from coming off is coated, the insulation ink has advantages of good adhesion, scratch and wear resistance and adhesiveness, so the electrically-conductive copper surface of the signal line which is adjacent to the component installation region can be effectively prevented from being exposed, wherein the baring will lead to the defect that a short circuit occurs between the signal line and the adjacent component. The short circuit prevention type printed circuit board can be used to improve the insulating property between signal lines designed in a high density and components, and can be used to ensure the finished product safety and quality reliability of electronic products.
Description
Technical field
The utility model relates to printed circuit board and makes the field, relates in particular to a kind of anti-short circuit printed circuit plate structure.
Background technology
Along with popularizing and extensive use of electronic product, printed circuit board becomes the important parts of electronic applications as the substrate of carrying electronic component, design of printed circuit board and create a very important ring in the IT industry chain, the quality of printed circuit board is also fundamentally determining the reliability of electronic product performance.Along with the development of the microminiaturization of components and parts and IC chip, printed circuit board is also towards the future development of high stratification and high precision.Because the face that mounts of components and parts is all metal covering or exposes metal pin, on printed circuit board, during the modelled signal circuit, generally all to avoid the components and parts pasting area.But, along with the density that connects up on the printed circuit board is more and more higher, when design, be difficult to holding wire is avoided fully the zone of components and parts to be installed.Like this, when repeatedly assembling or mounting components and parts, the green welding resistance ink lay on printed circuit board top layer easily part comes off, thereby easily causes segment signal line and components and parts short circuit, affects the qualification rate of electronic product finished product.
The utility model content
The purpose of this utility model is: a kind of anti-short circuit printed circuit board is provided, and this printed circuit board can effectively prevent the circuit defect between signal line and the components and parts welding region.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of anti-short circuit printed circuit board, comprise the component side for mounting related components, described component side comprises for the substrate layer of insulation isolation and is arranged on copper sheet line layer on the described substrate layer, also be provided with the welding resistance ink lay for isolation welding region and non-welding region on the described component side, be coated with the dielectric ink that one deck prevents that described welding resistance ink lay from coming off on the described welding resistance ink lay.
Preferably, described dielectric ink is positioned at welding resistance ink lay corresponding to copper sheet line layer adjacent with the welding region that is used for mounting related components, so just avoided when repeatedly mounting or assembling components and parts, assembly welding ink lay on the copper sheet line layer adjacent with welding region partly comes off, thus the short circuit of the signal line that causes and components and parts.
Preferably, described dielectric ink is white ink.The main component of white ink comprises high viscosity oligomer, pigment, defoamer and polymerization inhibitor, white ink is after correctly and thoroughly drying up, be good tack, scrape abrasion resistance and adherence, because its scratch resistance mill can play good insulating properties, in case the short circuit between stop signal circuit and the adjacent components and parts.
The beneficial effects of the utility model are: compared with prior art, the anti-short circuit printed circuit board of the utility model also is coated with the dielectric ink that one deck prevents that the welding resistance ink lay from partly coming off on the basis of traditional welding resistance ink lay, because this dielectric ink has good tack, scrape abrasion resistance and adherence, the conduction copper face that can effectively prevent the signal line adjacent with mounting related components zone is exposed, thereby causes the defective of signal line and the components and parts short circuit of adjoining.Should improve in the holding wire of high density designs and the insulation property between the components and parts by anti-short circuit printed circuit board, guaranteed finished product fail safe and the reliability of electronic product.
Description of drawings
Fig. 1 is the cross-sectional view of the anti-short circuit printed circuit board of the utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing and preferred embodiment, but execution mode of the present utility model is not limited to this.
With reference to Fig. 1, a kind of anti-short circuit printed circuit board, comprise the component side 10 for mounting related components, described component side 10 comprises for the substrate layer 12 of insulation isolation and is arranged on copper sheet line layer 14 on the described substrate layer 12, also be provided with the welding resistance ink lay 20 for isolation welding region and non-welding region on the described component side 10, be coated with the dielectric ink 30 that one deck prevents that described welding resistance ink lay 20 from coming off on the described welding resistance ink lay 20.
In actual applications, the anti-short circuit printed circuit board of the utility model can be lamina or multi-layer sheet, and substrate layer 12 adopts insulating resin layer to make, and for example adopts the FR4 plate; Copper sheet line layer 14 is for to make through acid etching technique or alkali etching technique with the copper sheet of substrate layer 12 pressings, and concrete signal line arranges according to the function needs.The welding region that welding resistance ink lay 20 is on the signals layer 10 is windowed, and at non-welding region substrate layer 12 and copper sheet line layer 14 is solidified welding resistance printing ink, thereby avoids tin on the non-welding region.But because printed circuit board is when wiring density is large, the welding region of holding wire and components and parts to be installed is very approaching, and repeatedly install or mount the components and parts meeting so that the welding resistance ink lay 20 of welding region periphery comes off under the effect of external force, thereby the defective that holding wire is connected with the component's feet short circuit easily occurs.In order to improve the reliability of electronic product finished product, the utility model also is coated with one and prevents the dielectric ink 30 that welding resistance ink lay 20 comes off on welding resistance ink lay 20.
Preferably, dielectric ink 30 is positioned at welding resistance ink lay 20 corresponding to the copper sheet line layer adjacent with the welding region that is used for mounting related components 14, so just avoided when repeatedly mounting or assembling components and parts, assembly welding ink lay 20 parts on the copper sheet line layer 14 adjacent with welding region come off, thus the short circuit of the signal line that causes and components and parts.
Preferably, described dielectric ink 30 is white ink.The main component of white ink comprises high viscosity oligomer, pigment, defoamer and polymerization inhibitor, white ink is after correctly and thoroughly drying up, be good tack, scrape abrasion resistance and adherence, because its scratch resistance mill can play good insulating properties, in case the short circuit between stop signal circuit and the adjacent components and parts.
Compared with prior art, the anti-short circuit printed circuit board of the utility model also is coated with the dielectric ink 30 that one deck prevents that welding resistance ink lay 20 parts from coming off on the basis of traditional welding resistance ink lay 20, because this dielectric ink 30 has good tack, scrape abrasion resistance and adherence, the conduction copper face that can effectively prevent the signal line adjacent with mounting related components zone is exposed, thereby causes the defective of signal line and the components and parts short circuit of adjoining.Should improve in the holding wire of high density designs and the insulation property between the components and parts by anti-short circuit printed circuit board, guaranteed finished product fail safe and the reliability of electronic product.
More than be that better enforcement of the present utility model is specified, but the invention is not limited to described embodiment, those of ordinary skill in the art make all equivalent variations or replacement also can doing under the prerequisite of the utility model spirit, the distortion that these are equal to or replace all is included in the application's claim limited range.
Claims (3)
1. anti-short circuit printed circuit board, comprise the component side for mounting related components, described component side comprises for the substrate layer of insulation isolation and is arranged on copper sheet line layer on the described substrate layer, also be provided with the welding resistance ink lay for isolation welding region and non-welding region on the described component side, it is characterized in that: be coated with the dielectric ink that one deck prevents that described welding resistance ink lay from coming off on the described welding resistance ink lay.
2. anti-short circuit printed circuit board as claimed in claim 1 is characterized in that: described dielectric ink is positioned at welding resistance ink lay corresponding to copper sheet line layer adjacent with the welding region that is used for mounting related components.
3. anti-short circuit printed circuit board as claimed in claim 1, it is characterized in that: described dielectric ink is white ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578668 CN202857135U (en) | 2012-11-05 | 2012-11-05 | Short circuit prevention type printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578668 CN202857135U (en) | 2012-11-05 | 2012-11-05 | Short circuit prevention type printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202857135U true CN202857135U (en) | 2013-04-03 |
Family
ID=47988275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578668 Expired - Lifetime CN202857135U (en) | 2012-11-05 | 2012-11-05 | Short circuit prevention type printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202857135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139465A (en) * | 2019-03-28 | 2019-08-16 | 厦门大学 | A kind of high current pcb board |
-
2012
- 2012-11-05 CN CN 201220578668 patent/CN202857135U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110139465A (en) * | 2019-03-28 | 2019-08-16 | 厦门大学 | A kind of high current pcb board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
|
| CX01 | Expiry of patent term |