CN204069490U

CN204069490U - Printed substrate

Info

Publication number: CN204069490U
Application number: CN201490000033.XU
Authority: CN
Inventors: 魏晓敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-09
Filing date: 2014-04-09
Publication date: 2014-12-31
Anticipated expiration: 2024-04-09
Also published as: WO2015154243A1

Abstract

This application discloses a kind of printed substrate, it is formed with at least two root bead shape bars that intersection point is pad center at pad place, thus drill bit and contact pads area less, produce heat less, avoid the problem that boring aperture is bigger than normal, extend bit life.In addition, owing to being formed with intersection point, boring position under making drill bit can accurate assurance.

Description

Printed substrate

Technical field

The application relates to circuit field, particularly relates to a kind of printed substrate.

Background technology

When carrying out multiple plate pressing and forming multilayer circuit board, its internal layer plate can arrange pad, and hole at pad locations place.By arranging pad to ensure that between adjacent inner layer plate, signal of telecommunication conducting is smooth and easy.

Please refer to Fig. 1, existing pad 100 form is rounded.In the process that this pad is holed, because pad and bit contact area are comparatively large, can amount of heat be produced, boring aperture can be caused bigger than normal, and affect bit life.

Summary of the invention

The application is intended to one of solve the problems of the technologies described above at least to a certain extent.

The application provides a kind of printed substrate, comprising: the pad of annular, and is overlapped at least two root bead shape bars on this pad by this pad center, two ends.

Further, between adjacent described weldering shape bar, angle is 90 degree.

Further, between adjacent described weldering shape bar, angle is 60 degree.

The beneficial effect of the application is:

By providing a kind of printed substrate, it is formed with at least two root bead shape bars that intersection point is pad center at pad place, thus drill bit and contact pads area less, produce heat less, avoid the problem that boring aperture is bigger than normal, extend bit life.In addition, owing to being formed with intersection point, boring position under making drill bit can accurate assurance.

Accompanying drawing explanation

Fig. 1 is the structural representation of the pad of prior art.

Fig. 2 is the structural representation of the pad of the embodiment of the present application.

Embodiment

Be described below in detail the embodiment of the application, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the application, and the restriction to the application can not be interpreted as.

In the description of the application, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the application and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the application can not be interpreted as.

In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In the description of the application, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In this application, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in this application can be understood as the case may be.

In this application, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.

By reference to the accompanying drawings the application is described in further detail below by embodiment.

Please refer to Fig. 2, the application provides a kind of printed substrate, comprising: the pad 1 of annular, and is overlapped at least two root bead shape bars 2 on this pad 1 by this pad 1 center, two ends.Between adjacent weldering shape bar 2, angle is 90 degree.

Like this, be formed with at least two root bead shape bars that intersection point is pad center at pad place, thus drill bit and contact pads area less, produce heat less, avoid the problem that boring aperture is bigger than normal, extend bit life.In addition, owing to being formed with intersection point, boring position under making drill bit can accurate assurance.

In addition, as another kind of execution mode, between adjacent weldering shape bar, angle is 60 degree, now can adopt 3 root bead shape bars.

In the description of this specification, at least one embodiment that specific features, structure, material or feature that the description of reference term " execution mode ", " some execution modes ", " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained in the application or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.

Above content is the further description done the application in conjunction with concrete execution mode, can not assert that the concrete enforcement of the application is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite not departing from the application's design, some simple deduction or replace can also be made.

Claims

1. a printed substrate, is characterized in that, comprising: the pad of annular, and is overlapped at least two root bead shape bars on this pad by this pad center, two ends.

2. printed substrate as claimed in claim 1, it is characterized in that, between adjacent described weldering shape bar, angle is 90 degree.

3. printed substrate as claimed in claim 1, it is characterized in that, between adjacent described weldering shape bar, angle is 60 degree.