CN203840631U

CN203840631U - High-heat-conductivity self-adhesive LED flexible circuit board

Info

Publication number: CN203840631U
Application number: CN201420098894.8U
Authority: CN
Inventors: 李迪
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-06
Filing date: 2014-03-06
Publication date: 2014-09-17
Anticipated expiration: 2024-03-06

Abstract

The utility model discloses a high-heat-conductivity self-adhesive LED flexible circuit board. The circuit board comprises an upper layer, a lower layer, an intermediate layer, a first interlayer between the upper layer and the intermediate layer, and a second interlayer between the lower layer and the intermediate layer. The upper and lower layers are weather-resistant layers. The intermediate layer is an electricity-conductive layer. The first interlayer is an insulated layer. The second interlayer is a self-adhesive layer. According to the utility model, one weather-resistant layer, the self-adhesive layer, the electricity-conductive layer, and the insulated layer are laminated sequentially; PI films with an excellent high and low temperature resisting property are adopted in the weather-resistant layers; a heat-conductive double-faced adhesive tape with a high heat conductivity coefficient and a high voltage withstanding property is adopted in the self-adhesive layer, which can be tightly combined with cooling fins and fill the concave-convex surfaces of the cooling fins; an electricity-conductive and heat-conductive copper foil which is the best one people have ever used is adopted in the electricity-conductive layer; and high-temperature hot melt adhesive is adopted in the insulated layer. The circuit board of the utility model is enabled to have high heat conductivity, wide heat conduction range, good insulating effect, high voltage resistance and easy manufacture process, and to be a green product. No chemical agent is used during the whole manufacture process of the circuit board, and the circuit board is applicable to products generally requiring high heat conductivity.

Description

High heat-conductive self-sticky LED flexible PCB

Technical field

The utility model relates to circuit board, particularly a kind of high heat-conductive self-sticky LED flexible PCB.

Background technology

It is that base material is made that existing PCB circuit board normally adopts aluminium base, resin plate, copper base, adopt the circuit board of above-mentioned board making, its thickness is thicker, radiating effect is poor, can not be crooked, can not be surperficial for being directly mounted on the electronic-device radiator that caloric value is large, and in manufacturing process, need to use chemical solvent, quite large to environmental impact, and not environmental protection.

Utility model content

The purpose of this utility model is, for the above-mentioned defect of prior art, provides a kind of high heat-conductive self-sticky LED flexible PCB.

The utility model is achieved in that a kind of high heat-conductive self-sticky LED flexible PCB, comprise the first interlayer between upper strata, lower floor, intermediate layer, upper strata and intermediate layer and the second interlayer between lower floor and intermediate layer, described the upper and lower are heat-resistant layer, described intermediate layer is conductive layer, described the first interlayer is insulating barrier, and described the second interlayer is from glutinous layer.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described heat-resistant layer is PI film member.PI film has good resistant of high or low temperature, electric insulating quality, caking property, radiation resistance, can in the temperature range of-40 ℃ ~ 280 ℃, use for a long time, and temperature when short-term is used can reach 400 ℃, and electric insulation endurance is up to 22KV/mm.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described conductive layer is Copper Foil member.Copper Foil is to use now the highest conductive heat conducting material, makes heat conduction scope of the present utility model reach maximum area.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described insulating barrier is high temperature PUR member.Adopt high temperature PUR as of the present utility model from glutinous layer, can effectively fit PI film and Copper Foil, to copper foil circuit gap-fill and increase the insulating properties of Copper Foil spacing.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described is double-sided adhesive members from glutinous layer.Because the conductive coefficient scope of double faced adhesive tape is at 1 ~ 6W/mk, insulate high pressure resistant up to 3 ~ 6KV, the scope of 40 ℃ ~ 180 ℃, can normally work, can combine closely with fin, and can fill the male and fomale(M&F) of fin surface; Taking off the PI of lower floor release film part can directly stick on the fin above sticky radiator.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described PI film member thickness is selected in following scope: 0.03mm ~ 1mm.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described Copper Foil member thickness is selected in following scope: 0.03mm ~ 1mm.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described high temperature PUR member thickness is selected in following scope: 0.03mm ~ 1mm.

As a kind of improvement of the high heat-conductive self-sticky LED of the utility model flexible PCB, described double-sided adhesive members thickness is selected in following scope: 0.03mm ~ 1mm.

Compared with prior art, the advantage of the high heat-conductive self-sticky LED of the utility model flexible PCB is: the utility model adopts heat-resistant layer, certainly glutinous layer, conductive layer and insulating barrier to stack gradually, heat-resistant layer is selected has good resistant of high or low temperature PI film, from glutinous layer, select and there is high thermal conductivity coefficient and high withstand voltage bond plies, can combine closely with fin, and can fill the male and fomale(M&F) of fin surface; Conductive layer is selected the Copper Foil of the highest conductive and heat-conductive of use now, and insulating barrier is selected high temperature PUR, and can effectively fit PI film and Copper Foil, to copper foil circuit gap-fill and increase the insulating properties of Copper Foil spacing.Make the utlity model has high-termal conductivity, heat conduction scope is wide, insulation effect good, high pressure resistant, processing procedure easily, green product, full manufacturing process is without using any chemical agent,, be applicable to the product of the high heat conduction of primary demand.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation.

Reference numeral title: 1, upper strata 2, lower floor 3, intermediate layer 4, the first interlayer 5, the second interlayer.

Embodiment

Below just with reference to the accompanying drawings the utility model is described in further detail.

As shown in Figure 1, a kind of high heat-conductive self-sticky LED flexible PCB, comprise the first interlayer 4 between upper strata 1, lower floor 2, intermediate layer 3, upper strata 1 and intermediate layer 3 and the second interlayer 5 between lower floor 2 and intermediate layer 3, described upper strata 1 and lower floor 2 are heat-resistant layer, described intermediate layer 3 is conductive layer, described the first interlayer 4 is insulating barrier, and described the second interlayer 5 is from glutinous layer.

Wherein, heat-resistant layer is selected PI film, PI film has good resistant of high or low temperature, electric insulating quality, caking property, radiation resistance, can in the temperature range of-40 ℃ ~ 280 ℃, use for a long time, and temperature when short-term is used can reach 400 ℃, and electric insulation endurance is up to 22KV/mm; PI film thickness is selected in following scope: 0.03mm ~ 1mm.

Conductive layer is selected Copper Foil.Copper Foil is to use now the highest conductive heat conducting material, makes heat conduction scope of the present utility model reach maximum area; Copper thickness is selected in following scope: 0.03mm ~ 1mm.

Insulating barrier is selected high temperature PUR.Adopt high temperature PUR as of the present utility model from glutinous layer, can effectively fit PI film and Copper Foil, to copper foil circuit gap-fill and increase the insulating properties of Copper Foil spacing; High temperature PUR thickness is selected in following scope: 0.03mm ~ 1mm.

From glutinous layer, select double faced adhesive tape.Because the conductive coefficient scope of double faced adhesive tape is at 1 ~ 6W/mk, insulate high pressure resistant up to 3 ~ 6KV, the scope of 40 ℃ ~ 180 ℃, can normally work, can combine closely with fin, and can fill the male and fomale(M&F) of fin surface; Taking off the PI of lower floor release film part can directly stick on the fin above sticky radiator.Double faced adhesive tape thickness is selected in following scope: 0.03mm ~ 1mm.

The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the utility model is not limited to embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection range of claim of the present utility model.In addition,, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.

Claims

1. one kind high heat-conductive self-sticky LED flexible PCB, it is characterized in that, comprise the first interlayer between upper strata, lower floor, intermediate layer, upper strata and intermediate layer and the second interlayer between lower floor and intermediate layer, described the upper and lower are heat-resistant layer, described intermediate layer is conductive layer, described the first interlayer is insulating barrier, and described the second interlayer is from glutinous layer.

2. high heat-conductive self-sticky LED flexible PCB according to claim 1, is characterized in that, described heat-resistant layer is PI film member.

3. high heat-conductive self-sticky LED flexible PCB according to claim 1, is characterized in that, described conductive layer is Copper Foil member.

4. high heat-conductive self-sticky LED flexible PCB according to claim 1, is characterized in that, described insulating barrier is high temperature PUR member.

5. high heat-conductive self-sticky LED flexible PCB according to claim 1, is characterized in that, described is double-sided adhesive members from glutinous layer.

6. high heat-conductive self-sticky LED flexible PCB according to claim 2, is characterized in that, described PI film member thickness is selected in following scope: 0.03mm ~ 1mm.

7. high heat-conductive self-sticky LED flexible PCB according to claim 3, is characterized in that, described Copper Foil member thickness is selected in following scope: 0.03mm ~ 1mm.

8. high heat-conductive self-sticky LED flexible PCB according to claim 4, is characterized in that, described high temperature PUR member thickness is selected in following scope: 0.03mm ~ 1mm.

9. high heat-conductive self-sticky LED flexible PCB according to claim 5, is characterized in that, described double-sided adhesive members thickness is selected in following scope: 0.03mm ~ 1mm.

10. high heat-conductive self-sticky LED flexible PCB according to claim 1, is characterized in that, the flexible or bending of described high heat-conductive self-sticky LED flexible PCB, and can directly stick on the fin being bonded at above radiator.