CN203407069U

CN203407069U - Circuit board with hydrophobic property waterproof and moisture-proof coating layer

Info

Publication number: CN203407069U
Application number: CN201320464472.3U
Authority: CN
Inventors: 李宏伟
Original assignee: Shenzhen Strong Female New Peak Communication Science And Technology Ltd
Current assignee: He Shuo (Xiamen) energy saving and Environmental Protection Technology Co. Ltd.
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2014-01-22
Anticipated expiration: 2023-07-31

Abstract

The utility model discloses a circuit board with a hydrophobic property waterproof and moisture-proof coating layer. The circuit board comprises a substrate and a hydrophobic property coating layer. The surface of the substrate is provided with a circuit or electronic elements. The hydrophobic property coating layer is laid on the surface of the substrate. The hydrophobic property coating layer surface is provided with multiple micro structures with subtle protrusions. The surfaces of the micro structures are covered with a non-hydrophilic base material. Size of each micro structure is from 5 to 15 micrometers. Water can be effective prevented by the circuit board, and water on the surface can be shrunk into a bead shape by utilizing waterproof and moisture-proof properties of the circuit board so that drying and cleaning of the surface can be conveniently maintained. Besides, self-conduction is not generated after coating due to material characteristics. However, a phenomenon of poor contact or disconnection due to the fact that each metal contact is coated into film thickness is not generated.

Description

The circuit board with the waterproof and dampproof coating of hydrophobicity

Technical field

The utility model relates to circuit board, relates in particular to a kind of circuit board with the waterproof and dampproof coating of hydrophobicity.

Background technology

Electronic product has become role indispensable in daily life, such as clothing, live, go, educate, find pleasure in, closely bound up interwoveness invariably, electronic product has very large contribution to people's convenience of making the life better.

And electronic product equipment, maximum mortal wound is exactly its inner member, and especially the careful circuit board of precise structure, poor to the resistance capabilities of aqueous vapor, once electronic equipment is intake or made moist, will cause irredeemable loss.Not that whole equipment scrapping pulled down maintenance exactly, beyond property causes damage, cause equipment to stop yet.

Present stage, electronic product equipment was if any carrying out especially waterproof and dampproof processing, was mostly to see through mechanism design to become waterproof and dampproof shell, added shell seam crossing and carried out seam protection with rubber washer, and reach certain classification of waterproof.Such as: the Chinese utility model patent that the patent No. is 200820140843.1 discloses a kind of waterproof, protection against the tide, insect protected battery circuit board; comprise power supply, power stage and control section, it is characterized in that: all circuit board positive and negatives all have fluid sealant or resin-sealed protection except radiator.Circuit board and components and parts above thereof comprise that pin all has fluid sealant or resin-sealed protection, and fluid sealant or resin preferably transparent or semitransparent.Its advantage is: can thoroughly stop the fault that causes into water, steam and insects, especially can in wet environment, work and not make moist.But such be designed with mechanism and thickness problem first in the sky, so the electronic equipment external form that has at present waterproofing design heaviness is very not light and handy.

Therefore, be in the rainy area that has a humid climate, how for electronic product equipment, especially circuit board, seeks a waterproof and dampproof method that has each side advantage concurrently, has become industry to be eager to seek the problem of solution.

Utility model content

The purpose of this utility model is, overcome the above-mentioned defect of prior art, provide a kind of tool hydrophobicity waterproof and dampproof painting layer circuit board, the hydrophobicity of utilization itself can be effectively waterproof and dampproof, can avoid aqueous vapor to cause circuit or element infringement, and be convenient to keep the dry and clean of surface.

For achieving the above object, the technical scheme that the utility model provides is as follows:

A circuit board for the waterproof and dampproof coating of hydrophobicity, comprising:

One substrate, surface is provided with circuit or electronic component.

One hydrophobic coating, utilizes coating or contains soaking technology and be layed in substrate surface, and hydrophobic coating surface possesses the micro-structural that has most fine protrusions, and micro-structure surface is covered with non-hydrophilic base.By structure like this, make substrate surface have hydrophobicity, the water that drops on hydrophobic coating surface can be subject to micro-structural and itself surface tension effects, and assemble, forms the globule.

By structure like this, made the circuit board of the waterproof and dampproof coating of the utility model hydrophobicity or its surperficial circuit or electronic component there is waterproof and dampproof property, and produce the lotus leaf effect of similar lotus leaf surface, the water that drops on hydrophobic coating surface can be subject to these micro-structurals and itself surface tension effects, and assemble, forms the globule.Moreover hydrone is effectively intercepted outside this layer of hydrophobic layer, its hydrone can not contacted with each contact on circuit board, reach waterproof and dampproof effect.

Generally speaking, the contact angle contactangle on globule hydrophobic coating surface can be greater than 110 degree, therefore, compared with on general surface, the globule on hydrophobic coating surface can more can shrink formation pearl, user can make its landing with toppling over mode easily, or utilizes the ground wiping of rag small size can remove the globule.

Usefulness of the present utility model is, effectively waterproof, more can utilize its waterproof and dampproof property to make lip-deep moisture be punctured into pearl, and convenient the dry and clean of surface that keep.And due to material behavior, after being coated with, can't oneself conduct electricity, but each metallic contact can't become thickness to cause loose contact or the phenomenon such as open circuit because of coating.

Accompanying drawing explanation

Fig. 1 is the structural representation of the waterproof and dampproof painting layer circuit board of the utility model tool hydrophobicity;

Fig. 2 is the part enlarged drawing of the waterproof and dampproof painting layer circuit board of the utility model hydrophobicity;

Fig. 3 is the enforcement view of the waterproof and dampproof painting layer circuit board of the utility model hydrophobicity.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, with regard to the technical solution of the utility model, be further described.

Shown in Fig. 1, the waterproof and dampproof painting layer circuit board of the utility model tool hydrophobicity, comprising:

Substrate 1, surface is provided with circuit or electronic component etc.The material of substrate 1 is phenolic resins, glass fibre/epoxy resin, Polyimide, BT/Epoxy etc. organic material, or aluminium, Copper-invar-copper, ceramic etc. possess the inorganic of heat sinking function;

Hydrophobic coating 2, utilizes coating or contains soaking technology and be layed in substrate 1 surface, and hydrophobic coating 2 surfaces possess and have the micro-structural of most fine protrusions 20, and micro-structural 20 surface coverage hydrophilic base 21; Wherein, the size of micro-structural 20 is 5～15 microns, but not hydrophilic base 21 is wax.

Shown in Fig. 2, aforementioned hydrophobic coating 2 can make substrate 1 surface have hydrophobicity.The water that drops on hydrophobic coating 2 surfaces can be subject to micro-structural 20 and itself surface tension effects, and assemble, forms the globule.

In summary, by hydrophobic coating 2, be layed in the structure on substrate 1 surface, the utlity model has the circuit board of the waterproof and dampproof coating of hydrophobicity or its surperficial circuit or electronic component itself and can there is waterproof and dampproof property, and produce the Flos Nelumbinis effect of similar lotus leaf surface, the water that drops on hydrophobic coating 2 surfaces can be subject to these micro-structurals 20 and itself surface tension effects, and assemble, form the globule, thereby be difficult for adhesive water and dirt.

Please refer to shown in Fig. 3, the contacting contactangle and can be greater than 120 degree of the globule and hydrophobic coating 2 surfaces, therefore, compared with on general surface, the globule on hydrophobic coating 2 surfaces more can shrink and form globule shape, user can utilize easily and topple over mode and make its landing, or utilizes the ground wiping of rag small size.

To sum up, the circuit board of the waterproof and dampproof coating of the utility model tool hydrophobicity, effective waterproof not only, more can utilize its waterproof and dampproof dry and clean.And due to material behavior, after being coated with, can't oneself conduct electricity, but each metallic contact can not become thickness to cause loose contact or the phenomenon such as open circuit because of coating.In addition also possesses moistureproof antirust characteristic, even because accidentally fall into the infringement that also can not cause electronic component or circuit in water for the moment, allow the electronic product that user has can obtain good waterproof and dampproof protection.

Above-described is only principle of the present utility model and preferred embodiment.It should be pointed out that to those skilled in the art, not departing under the prerequisite of the utility model principle, can also make some modification and improvement, also should be considered as belonging to protection range of the present utility model.

Claims

1. a circuit board with the waterproof and dampproof coating of hydrophobicity, is characterized in that:

Comprise:

One substrate, surface is provided with circuit or electronic component; And

One hydrophobic coating, is layed in substrate surface, and hydrophobic coating mask has the micro-structural of most fine protrusions, and micro-structure surface is covered with non-hydrophilic base.

2. the circuit board with the waterproof and dampproof coating of hydrophobicity according to claim 1, is characterized in that: the size of described micro-structural is 5～15 microns.

3. the circuit board with the waterproof and dampproof coating of hydrophobicity according to claim 1, is characterized in that: described non-hydrophilic base is wax.

4. the circuit board with the waterproof and dampproof coating of hydrophobicity according to claim 1, is characterized in that: described baseplate material is organic material.

5. the circuit board with the waterproof and dampproof coating of hydrophobicity according to claim 1, is characterized in that: described baseplate material is the inorganic material that possesses heat sinking function.