CN206674303U - It is a kind of to reveal copper circuit board without carbon oil - Google Patents
It is a kind of to reveal copper circuit board without carbon oil Download PDFInfo
- Publication number
- CN206674303U CN206674303U CN201720501422.6U CN201720501422U CN206674303U CN 206674303 U CN206674303 U CN 206674303U CN 201720501422 U CN201720501422 U CN 201720501422U CN 206674303 U CN206674303 U CN 206674303U
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- circuit board
- carbon oil
- pin
- solder mask
- mask window
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Abstract
The utility model provides a kind of without carbon oil dew copper circuit board, including circuit board substrate, welding resisting layer is covered with circuit board substrate, circuit board substrate is provided with and presses key mapping, it is described to include two adjacent pin pads by key mapping, each pin pad is corresponded on welding resisting layer and is respectively equipped with solder mask window, solder mask window big 0 ~ 3mil more unilateral than pin pad, corresponding carbon oil layer, carbon oil layer big 4 ~ 8 mil more unilateral than pin pad are provided with above solder mask window.
Description
Technical field
Wiring board art is the utility model is related to, more particularly to it is a kind of without carbon oil dew copper circuit board.
Background technology
Because carbon oil has good electric conductivity, not oxidizable, stable performance, there is the anticorrosive spies such as acid and alkali resistance and solvent
Property, protection and conductive effect can be played, and its adhesive force and wearability are strong, cost is cheap, cost-effective, is widely used in
Calculator, remote controller, the wiring board of communication apparatus are pressed in key mapping, but because of plate harmomegathus and half tone tension force and carbon during silk-screen carbon oil
The factors such as oil itself baking contraction, it is easy to cause dew copper below carbon oil position, influence performance and outward appearance.Routine avoids revealing doing for copper
Method is to try to increase carbon oil width, ensures carbon oil covering unilateral minimum more than the 8mil of line pad, in actual design, due to past
Smaller toward the pin spacing for pressing key mapping, the mode that generally use opens window carries out solder mask window, and on pin between carbon oil and carbon oil
Away from smaller, short circuit is easily caused, to prevent that the minimum spacing of short-circuit carbon oil and carbon oil from being 10mil, therefore for line pad spacing
In the case of 26mil, carbon oil width can not be increased to the standard for not revealing copper.
Utility model content
In view of the above-mentioned problems, the utility model provides one kind reveals copper circuit board, including circuit board substrate, circuit without carbon oil
Welding resisting layer is covered with plate substrate, circuit board substrate, which is provided with, presses key mapping, described to include two adjacent pin pads by key mapping, prevents
Each pin pad is corresponded on layer and is respectively equipped with solder mask window, solder mask window big 0 ~ 3mil more unilateral than pin pad, welding resisting layer
Anti-solder ink dividing strip is formed between two pin pads；Corresponding carbon oil layer, the carbon oil layer are provided with above solder mask window
Big 4 ~ 8 mil more unilateral than pin pad.
Preferably, the width of solder mask window corresponding to short of width 5mil part is 5mil on pin pad, and pin welds
Solder mask window corresponding to part on disk more than width 5mil and pin pad etc. are big.
Preferably, the minimum range between the carbon oil layer as corresponding to two pin pads in key mapping is 10 mil.
No carbon oil dew copper circuit board provided by the utility model, it is corresponding each anti-welding by two pin pads setting of key mapping
Windowing to substitute opens window, the region that the ink of welding resisting layer can be outside covering pin pad as much as possible, because welding resisting layer is adopted
Printed and made with ink, precision is high, can more preferably cover the outer edge region of pin pad, and form weight with carbon oil on width
Superimposition lid, copper will not be also revealed when carbon oil layer One-sided Widths are smaller, while to form anti-solder ink between two pin pads
Dividing strip, due to the stop of anti-solder ink dividing strip, when the distance between carbon oil layer is smaller corresponding to two pin pads also not
Short circuit is easily caused, improves the product quality of wiring board.
Brief description of the drawings
Fig. 1 is no carbon oil dew copper circuit board example structure schematic diagram provided by the utility model.
Embodiment
For ease of skilled artisan understands that the utility model, below in conjunction with specific embodiments and the drawings to this practicality
It is new to be described in further detail.
Reveal copper circuit board embodiment, including circuit board substrate 1 without carbon oil as shown in Figure 1, be covered with circuit board substrate 1 anti-
Layer 3, circuit board substrate 1 be provided with by two adjacent pin pads 2 form by key mapping, it is corresponding on welding resisting layer 3 each to draw
Pin pad 2 is respectively equipped with solder mask window 4, i.e., the region that welding resisting layer ink does not cover, solder mask window 4 and the grade of pin pad 2 are big, prevents
Layer 3 forms anti-solder ink dividing strip 30 between two pin pads 2, and the top of solder mask window 4 is provided with corresponding with pin pad 2
Carbon oil layer 5, the big 4mil more unilateral than pin pad 2 of carbon oil layer 5, carbon oil layer 5 fill solder mask window 4 simultaneously it is close with pin pad 2
Contact, while be covered on the welding resisting layer ink at the edge of pin pad 2.Welding resisting layer 3 and carbon oil layer 5 are in the edge shape of pin pad 2
Into overlapping covering, pin pad 2 can be effectively avoided to reveal copper, anti-solder ink dividing strip 30 can be prevented corresponding to two pin pads 2
Carbon oil layer 5 causes short circuit because of hypotelorism.
Can not to prevent from having on pin pad 2 subregion windowing part corresponding on solder mask window 4 excessively narrow and small
Fully being contacted with carbon oil layer causes conductive bad, and the windowing part on pin pad 2 corresponding to short of width 5mil part is wide
Degree should be widened to 5mil, and solder mask window corresponding to remainder and pin pad etc. are big.Further to avoid short circuit, two pins
The distance between carbon oil layer 5 corresponding to pad 2 is preferably 10mil.
Although to description of the present utility model being carried out with reference to embodiments above, it is familiar with the art
Personnel many replacements, modifications and variations can be carried out according to above-mentioned content, be obvious.Therefore, it is all such
Substitute, improvement and change are included in scope of the appended claims.
Claims (3)
1. a kind of reveal copper circuit board, including circuit board substrate without carbon oil, welding resisting layer, circuit board substrate are covered with circuit board substrate
It is provided with and presses key mapping, it is described to include two adjacent pin pads by key mapping, it is characterised in that：It is corresponding on welding resisting layer each to draw
Pin pad is respectively equipped with solder mask window, solder mask window big 0 ~ 3mil more unilateral than pin pad, welding resisting layer two pin pads it
Between formed anti-solder ink dividing strip；Corresponding carbon oil layer is provided with above solder mask window, the carbon oil layer is more unilateral than pin pad big by 4
~8 mil。
2. reveal copper circuit board without carbon oil according to described in claim 1, it is characterised in that：Short of width 5mil portion on pin pad
The width of solder mask window is 5mil corresponding to point, solder mask window and pin corresponding to more than width 5mil part on pin pad
Pad etc. is big.
3. reveal copper circuit board without carbon oil according to described in claim 1, it is characterised in that：It is described to press two pin pads pair in key mapping
Minimum range between the carbon oil layer answered is 10mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501422.6U CN206674303U (en) | 2017-05-08 | 2017-05-08 | It is a kind of to reveal copper circuit board without carbon oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501422.6U CN206674303U (en) | 2017-05-08 | 2017-05-08 | It is a kind of to reveal copper circuit board without carbon oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206674303U true CN206674303U (en) | 2017-11-24 |
Family
ID=60370708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720501422.6U Active CN206674303U (en) | 2017-05-08 | 2017-05-08 | It is a kind of to reveal copper circuit board without carbon oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206674303U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109413881A (en) * | 2018-11-22 | 2019-03-01 | 奥士康科技股份有限公司 | A kind of production method of carbon oil wiring board and solder mask window |
| CN109548307A (en) * | 2018-12-21 | 2019-03-29 | 遂宁市广天电子有限公司 | A kind of carbon oil plate and preparation method thereof |
| CN109819601A (en) * | 2019-02-15 | 2019-05-28 | 格力电器（合肥）有限公司 | A kind of backlight source pin welding resistance method and backlight |
-
2017
- 2017-05-08 CN CN201720501422.6U patent/CN206674303U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109413881A (en) * | 2018-11-22 | 2019-03-01 | 奥士康科技股份有限公司 | A kind of production method of carbon oil wiring board and solder mask window |
| CN109413881B (en) * | 2018-11-22 | 2021-10-22 | 奥士康科技股份有限公司 | Manufacturing method of carbon oil circuit board and solder-mask windowing |
| CN109548307A (en) * | 2018-12-21 | 2019-03-29 | 遂宁市广天电子有限公司 | A kind of carbon oil plate and preparation method thereof |
| CN109819601A (en) * | 2019-02-15 | 2019-05-28 | 格力电器（合肥）有限公司 | A kind of backlight source pin welding resistance method and backlight |
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