CN205093033U - Circuit board base plate - Google Patents

Abstract

The utility model provides a circuit board base plate, have on the base plate and be used for making the off -the -shelf workspace of circuit board, the base plate with the shape of workspace is the rectangle, the workspace makes the base plate has four edges, the width at an edge in four edges is greater than the width at an arbitrary edge in the other three edge.

Description

A kind of circuit board substrate

Technical field

The utility model relates to board production field, is specifically related to a kind of circuit board substrate.

Background technology

In board production process, first by the method for the copper-clad base plate in full plate face by selective etch, etch other figure of layer and circuit, removed by copper sheet unnecessary for part, the copper remained is as the circuit of conduction (signal); Then completing substrate two sides paving PP prepreg and the Copper Foil of circuit, completing pressing by high temperature and high pressure mode and increasing layer, then carrying out the conducting of electric current and signal between complete layer by boring, plating.Wherein, plating flow process is by the galvanic effect in the external world, carries out cell reaction in the solution, makes the process of the surface deposition last layer metal or alloy layer of electric conductor.In plating flow process, usually utilize metal fixture to be clipped on substrate edges of boards, after energising, metallic copper enters plating solution with ionic condition, and constantly to the migration of plate face, on plank, finally obtain electron reduction is metallic copper.

As shown in Figure 1, in circuit board substrate design process, in order to improving production efficiency; usually can multiple sub-circuit board be come on same large substrates 11; electronic circuit version is wherein final finished product, and the region at multiple sub-circuit board place is called service area 12, or effective district.Directly in process of production carry out each manufacturing procedure for substrate, after machining, by the method for cutting, substrate is cut into final finished to during shaping flow process in board production.In the typesetting design of circuit board, in order to ensure its working condition and shipment quality, the edge 13 of certain size can be stayed in all directions of substrate 11 for plating flow process contained side, each edge measure-alike, plating flow process contained side is all can be used for use, so the layout design effective area of substrate accounts for total plate area ratio (utilance) and generally can be less than 90% (under normal circumstances, substrate utilization is 80%-85%), therefore the utilance of existing circuit board substrate is lower, can affect production efficiency and production cost thus.

Utility model content

Therefore, the technical problems to be solved in the utility model is to overcome the low defect of the utilance of circuit board substrate of the prior art.

For solving the problem, the utility model provides a kind of circuit board substrate, described substrate has the service area for making circuit board finished product, the shape of described substrate and described service area is rectangle, described service area makes described substrate have four edges, and the width at an edge in described four edges is greater than the width at any one edge in other three edges.

Preferably, the width at described other three edges is equal.

Preferably, the edge with Breadth Maximum is provided with the mark for identifying.

Preferably, breach is labeled as described in.

Preferably, the width with the edge of Breadth Maximum is 10mm-15mm, and the width of remaining edge is 2mm-5mm.

The circuit board substrate that the utility model provides wherein while be reserved with the edge meeting plating flow process contained side, each limit only has a small amount of plate staying frontier defense to stop in production process to damage in addition, this programme can add the utilance of circuit board substrate thus, improving production efficiency and reduction production cost.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is execution modes more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is existing circuit board substrate structural representation;

The circuit board substrate structural representation that Fig. 2 provides for the utility model embodiment.

Embodiment

Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

In description of the present utility model, it should be noted that, term " " center ", " on ", D score, "left", "right", etc. the orientation of instruction or position relationship be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.

In addition, if below in the described different execution mode of the utility model involved technical characteristic do not form conflict each other and just can be combined with each other.

The utility model embodiment provides a kind of circuit board substrate 21, as shown in Figure 2, described substrate 21 has the service area 22 for making circuit board finished product, described service area 22 is positioned within described substrate 21 scope, the described substrate 21 of the present embodiment and the shape of described service area 22 are all preferably rectangle, described service area 22 makes described substrate 21 have four edges (surrounding is equipped with edge), and the width at one of them edge (upper end edge 23) is greater than the width at any one edge in other three edges (left and right, lower end edge).

The width at upper end edge 23 is unsuitable excessive or too small, and only need to ensure that electroplating clamp can firm grip substrate 21 and can not damage service area 22, its width is preferably 10mm-15mm.The width of remaining edge can reduce as much as possible, but needs the plate preventing to cause in following process process (such as electroplate, cut) to damage, and should leave certain leeway, therefore the width of remaining edge is preferably 2mm-5mm for this reason.In order to simplified processing process, and increase substrate utilization further, other three edges are preferably equal wide.Not only when utilizing foregoing circuit base board 21 to produce circuit board finished product, can choose upper end edge 23 and carry out contained side conduction in plating flow process, electroplating clamp can firm grip substrate 21 but also can not contact service area 22 thus.

Such scheme at circuit board substrate 21 wherein while the reserved edge meeting plating flow process contained side, each limit only has a small amount of plate staying frontier defense to stop in production process to damage in addition, this programme can add the utilance of circuit board substrate 21 thus, improving production efficiency and reduction production cost.

Although the width at a wherein edge, place of substrate 21 is greater than the width at other edges, each border width is grade, so for identifying that the width of each edge still exists certain obstacle.Therefore as one preferred embodiment, the edge (upper end edge 23 place) with Breadth Maximum in the present embodiment is provided with the mark 24 for identifying, such as, can process a through hole at upper end-face edge place or add a conspicuous color mark.More preferably, in order to simplified processing process, can a breach be set at upper end-face edge place.

Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.

Claims (5)

1. a circuit board substrate, described substrate has the service area for making circuit board finished product, the shape of described substrate and described service area is rectangle, described service area makes described substrate have four edges, it is characterized in that, the width at an edge in described four edges is greater than the width at any one edge in other three edges.

2. circuit board substrate according to claim 1, is characterized in that, the width at described other three edges is equal.

3. circuit board substrate according to claim 1, is characterized in that, the edge with Breadth Maximum is provided with the mark for identifying.

4. circuit board substrate according to claim 3, is characterized in that, described in be labeled as breach.

5. the circuit board substrate according to any one of claim 1-4, is characterized in that, the width with the edge of Breadth Maximum is 10mm-15mm, and the width of remaining edge is 2mm-5mm.