CN202503815U

CN202503815U - Point discharge proof high voltage resistance aluminum substrate

Info

Publication number: CN202503815U
Application number: CN 201220063866
Authority: CN
Inventors: 李长生; 胡卓; 文泽生
Original assignee: Shenzhen Sun & Lynn Circuits Co Ltd
Current assignee: Shenzhen Sun & Lynn Circuits Co Ltd
Priority date: 2012-02-24
Filing date: 2012-02-24
Publication date: 2012-10-24
Anticipated expiration: 2022-02-24

Abstract

The utility model discloses a point discharge proof high voltage resistance aluminum substrate which comprises an aluminum substrate layer. An insulation dielectric layer is arranged on the aluminum substrate layer. A circuit layer is arranged on the insulation dielectric layer. The circuit layer is composed of circuit open windows and a conductive circuit which connects the circuit open windows. The corners around the windows of the circuit open windows are fillets. According to the utility model, the circuit open windows are arranged on the circuit layer, and the corners around the windows of the circuit open windows are fillets. Corresponding circuit open windows are subjected to surface treatment such as antioxidation film (OSP), solder coating or Ni/Au immersion to form pads whose shape is the same with that of the windows. Compared with the prior art, the point discharge proof high voltage resistance aluminum substrate provided by the utility model effectively prevents the phenomenon of point discharge of electrical equipment under transient overvoltage conditions such as lightning, voltage fluctuation, powering on and powering off and the like, thus the breakdown resistance strength of the aluminum substrate is enhanced, and the reliability and the safety of the use of the electrical equipment are improved.

Description

A kind of high pressure resistant aluminium base of anti-point discharge

Technical field

The utility model belongs to the wiring board manufacture technology field, and what be specifically related to is a kind of high pressure resistant aluminium base of anti-point discharge, this aluminium base under action of high voltage electric current through the time, can effectively prevent the generation of point discharge phenomenon.

Background technology

Along with the high speed development of microelectronics integrated technology, make the volume of electronic component, logical circuit greatly dwindle, and because operating frequency sharply increases, power consumption constantly increase, and causes the components and parts operational environment to change to high pressure, high temperature direction.Make electronic devices and components high reliability and long operate as normal if desired, must improve its high-voltage resistance capability, and in time distribute the heat that components and parts produce and accumulate, guarantee its useful life and precision.

For satisfying this requirement; High pressure resistant aluminium base has appearred; High pressure resistant aluminium base is as the substrate of electronic product; Be widely used in fields such as backlit display screen, large power supply, extraordinary lamp, auto lamp, street lamp, industrial light, LED lamp, wherein high pressure resistant aluminium base uses the most extensive on the LED lamp.

In view of being in, the LED lighting not only to dispel the heat under the environment that works long hours well; But also should be able to satisfy the pernicious environmental requirement under the instantaneous overvoltage situation such as thunder and lightning, voltage fluctuation, open and close; Therefore the breakdown voltage resistant of aluminium base is very crucial index; Sufficiently high anti-breakdown strength must be arranged, just can avoid electric equipment to break down.

When but the aluminum current substrate manufacturers designs at high pressure resistant aluminium base line pattern; Generally line pattern and solder pad are designed to square (being that corner is 90 degree right angles); Adopt the high pressure resistant aluminium base of this design to have very big defective: because corner's shape of line pattern and solder pad is square; When electric equipment under instantaneous overvoltage situation such as thunder and lightning, voltage fluctuation, open and close, point discharge phenomenon very easily takes place in high pressure resistant aluminium base corner, produces leakage current; Greatly reduce the anti-breakdown strength of aluminium base; Gently then cause electrical equipment malfunction, heavy then can cause fire incident, greatly reduced the whole aircraft reliability and the fail safe of electric equipment.

The utility model content

For this reason; The purpose of the utility model is to provide a kind of high pressure resistant aluminium base of anti-point discharge; Point discharge phenomenon very easily takes place in the corner to solve present high pressure resistant aluminium base; Produce leakage current, cause the anti-breakdown strength of aluminium base to reduce the problem that causes electric equipment reliability and fail safe to reduce.

For realizing above-mentioned purpose, the utility model mainly adopts following technical scheme:

A kind of high pressure resistant aluminium base of anti-point discharge; Comprise aluminum base layer (1); Said aluminum base layer (1) is provided with insulating medium layer (2); This insulating medium layer (2) is provided with line layer (3), and said line layer (3) is windowed (301) by circuit and connection line is windowed (301) conducting wire (302) constitutes, and said circuit is windowed, and the corner is a rounding around the window of (301).

Also be provided with a solder mask (4) on the wherein said line layer (3), this solder mask (4) is provided with and the above-mentioned circuit corresponding window in (301) position of windowing.

Wherein said insulating medium layer (2) is a prepreg.

The wherein said circuit correspondence of windowing in (301) is provided with the identical pad (303) of (301) shape of windowing with circuit.

The line layer of the utility model is provided with circuit and windows; The corner is a rounding around the window that these circuits are windowed, and corresponding circuit is windowed through forming shape and the above-mentioned circuit identical pad of window of windowing after the surface treatments such as oxidation-resistant film (OSP), spray tin or heavy nickel gold.Compared with prior art; The utility model has effectively avoided electric equipment under instantaneous overvoltage situation such as thunder and lightning, voltage fluctuation, open and close; The point discharge phenomenon that occurs has strengthened the anti-breakdown strength of aluminium base, has improved reliability and fail safe that electric equipment uses.

Description of drawings

Fig. 1 is the structural representation of the high pressure resistant aluminium base of the utility model.

Identifier declaration among the figure: aluminum base layer 1, insulating medium layer 2, line layer 3, circuit window 301, conducting wire 302, pad 303, solder mask 4, through hole 5.

Embodiment

For setting forth the thought and the purpose of the utility model, will combine accompanying drawing and specific embodiment that the utility model is done further explanation below.

See also shown in Figure 1ly, Fig. 1 is the structural representation of the high pressure resistant aluminium base of the utility model.The utility model provides a kind of high pressure resistant aluminium base of anti-point discharge; Rounding is arranged in all corners through window that circuit on the line layer is windowed; Through the arc-shaped transition of rounding, avoid forming wedge angle, thereby avoid taking place the phenomenon of point discharge in the outside of window.

The high pressure resistant aluminium base of the described anti-point discharge of the utility model through hole 5 that includes aluminum base layer 1, insulating medium layer 2, line layer 3, solder mask 4 and penetrate this high pressure resistant aluminium base wherein.Aluminum base layer 1 is processed by aluminum material, is installed on the radiator, is used for realizing heat radiation, and heat can be exhaled fast; Insulating medium layer 2 is fitted on the aluminum base layer 1; It is the insulator of electricity; The conductor of heat energy is generally prepreg, pure epoxy resin material or is filled with epoxy resin material of ceramic powder etc., and its effect is: to electrical insulation; But can make the thermal energy conduction that produces on the line layer 3 on following aluminum base layer 1, and then distribute; Line layer 3 is positioned on the insulating medium layer 2; Be through resulting after the etching by aluminium base copper-clad plate surface copper layer; Comprise that circuit windows 301, conducting wire 302 and circuit are windowed 301 pads 303 through forming after the surface treatments, and that described circuit is windowed is 301 identical with pad 303 shapes, and window 301 edge all around of circuit does not have wedge angle; All be rounding, realize seamlessly transitting through camber line; Solder mask 4 is one deck solder resist that covers on line layer 3 and the insulating medium layer 2 in fact; Mainly play insulation, protection circuit and effect attractive in appearance, solder mask 4 covers on the conducting wire 302, and window 301 part of circuit is then exposed; Through forming pad 303 after the surface treatments such as oxidation-resistant film (OSP), spray tin or heavy nickel gold; Be used for the welding of parts, surface treatment is played anti-oxidation and protective effect, and said conducting wire 302 forms a closed-loop path with each pad 303 series connection; Through hole 5 forms through boring, is circle, and its madial wall does not have copper layer, when being mainly used in welding part as the jack of plug-in unit.

The operation principle of the utility model is: on all circuits on the high pressure resistant aluminium base are windowed the position, form pad and be used for welding part, this moment, all parts formed a closed circuit under the series connection of conducting wire.Under action of high voltage, electric current gets into from positive pole, through behind the conducting wire through each parts, flow out the parts operate as normal that all are connected from negative pole.

The high pressure resistant aluminium base that more than is a kind of anti-point discharge that the utility model is provided has carried out detailed introduction; Used concrete example among this paper the structural principle and the execution mode of the utility model are set forth, above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.

Claims

1. the high pressure resistant aluminium base of an anti-point discharge; It is characterized in that comprising aluminum base layer (1); Said aluminum base layer (1) is provided with insulating medium layer (2); This insulating medium layer (2) is provided with line layer (3), and said line layer (3) is windowed (301) by circuit and connection line is windowed (301) conducting wire (302) constitutes, and said circuit is windowed, and the corner is a rounding around the window of (301).

2. the high pressure resistant aluminium base of anti-point discharge according to claim 1 is characterized in that also being provided with on the said line layer (3) solder mask (4), and this solder mask (4) is provided with and the above-mentioned circuit corresponding window in (301) position of windowing.

3. the high pressure resistant aluminium base of anti-point discharge according to claim 1 is characterized in that said insulating medium layer (2) is a prepreg.

4. the high pressure resistant aluminium base of anti-point discharge according to claim 1 is characterized in that the said circuit correspondence of windowing in (301) is provided with the identical pad (303) of (301) shape of windowing with circuit.