CN213662047U

CN213662047U - Promote flexible line way board of waterproof function

Info

Publication number: CN213662047U
Application number: CN202022443799.5U
Authority: CN
Inventors: 谭儒峰
Original assignee: Injection Precision Rubber Suzhou Co ltd
Current assignee: Injection Precision Rubber Suzhou Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-07-09
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a flexible circuit board for improving waterproof function, which comprises an upper layer PET, an upper layer circuit, an upper layer insulation UV, an upper layer jumper, an upper layer waterproof PET printing ink, a lower layer jumper, a lower layer insulation UV, a lower layer circuit and a lower layer PET which are arranged from top to bottom in sequence; the upper layer waterproof PET printing ink fully covers the upper layer circuit, the upper layer insulation UV and the upper layer jumper; the lower layer waterproof PET printing ink fully covers the lower layer circuit, the lower layer insulation UV and the lower layer jumper; and a layer of exhaust channel is printed on the upper layer of waterproof PET printing ink or the lower layer of waterproof PET printing ink in a full-page manner. The utility model discloses a mode through whole version cover prints whole layer waterproof PET printing ink on upper PET or lower floor's PET to greatly promoted flexible line way board's waterproof performance, and reduced flexible line way board thickness on the whole and made flexible line way board more frivolous, pressing performance better, and the exhaust ditch of whole layer printing makes the exhaust performance better.

Description

Promote flexible line way board of waterproof function

Technical Field

The utility model relates to a flexible line way board technical field, in particular to promote flexible line way board of waterproof function.

Background

The flexible circuit board is mainly applied to the field of equipment with functions of household appliance keys, computer keys and various keys, and electric functions are realized by printing conductive silver paste, insulating UV, carbon and the like on PET.

As shown in fig. 1 and 2, the flexible printed circuit board usually uses upper and lower layers printed with local waterproof glue to achieve the waterproof function, and the upper and lower layers of waterproof glue are both required to be designed with exhaust grooves to achieve the exhaust function of the key device. In the prior art, waterproof glue is printed on the part corresponding to the electric part such as conductive silver paste and the like, so that the whole flexible circuit board has poor waterproof and moistureproof performance and cannot meet the high requirement of the flexible circuit board on waterproof performance; and the exhaust groove is directly arranged on the waterproof adhesive, so that the exhaust performance is poor, and the hand feeling is poor when the key is pressed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a flexible circuit board for improving the waterproof function, which comprises an upper layer PET, an upper layer circuit, an upper layer insulation UV, an upper layer jumper, an upper layer waterproof PET printing ink, a lower layer jumper, a lower layer insulation UV, a lower layer circuit and a lower layer PET which are arranged from top to bottom in sequence;

the upper circuit, the upper insulating UV, the upper jumper and the upper waterproof PET printing ink are sequentially printed on the upper PET, and the upper circuit, the upper insulating UV and the upper jumper are fully covered by the upper waterproof PET printing ink;

the lower circuit, the lower insulating UV, the lower jumper and the lower waterproof PET printing ink are sequentially printed on the lower PET, and the lower circuit, the lower insulating UV and the lower jumper are fully covered by the lower waterproof PET printing ink;

wherein, the upper layer of waterproof PET printing ink is printed with an upper layer of exhaust channel in a full-page manner; or a lower-layer exhaust channel is printed on the lower-layer waterproof PET printing ink in a full-page mode; or, the upper layer of waterproof PET printing ink is printed with an upper layer of exhaust groove in a full-page mode, and the lower layer of waterproof PET printing ink is printed with a lower layer of exhaust groove in a full-page mode.

Through the technical scheme, the utility model discloses following beneficial effect has:

1. the waterproof PET printing ink is used for replacing conventional waterproof glue, and is developed specially for PET materials, so that the waterproof PET printing ink is combined with the PET materials more firmly, and the whole layer of waterproof PET printing ink is printed on the upper layer of PET or the lower layer of PET in a full-page covering mode, so that the waterproof performance of the flexible circuit board is greatly improved;

2. because the structure of printing the waterproof PET printing ink by full-page covering is adopted, the upper and lower electrical parts are not required to be isolated by the middle layer PET spacer, so that the thickness of the flexible circuit board is integrally reduced, the flexible circuit board is lighter and thinner, and the pressing performance is better;

3. because the whole layer of exhaust groove is directly printed on the waterproof PET printing ink covered by the whole plate, the exhaust performance is better, and the sensitivity and the hand feeling when the key is pressed are effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic view of a prior art upper waterproof glue with an exhaust channel;

FIG. 2 is a partially enlarged view of FIG. 1;

fig. 3 is an exploded schematic view of the flexible printed circuit disclosed in embodiment 1 of the present invention;

FIG. 4 is a schematic view of an upper waterproof PET printing ink disclosed in embodiment 1 of the present invention;

fig. 5 is a schematic view of an upper exhaust duct disclosed in embodiment 1 of the present invention.

1. Upper PET layer; 2. an upper layer circuit; 3. insulating the upper layer with UV; 4. an upper layer jumper wire; 5. the upper layer is waterproof PET printing ink; 6. an upper exhaust channel; 7. lower waterproof PET printing ink; 8. a lower layer jumper wire; 9. insulating UV of the lower layer; 10. a lower layer circuit; 11. and lower PET layer.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Example 1:

referring to fig. 3-5, the utility model provides a flexible printed circuit board with improved waterproof function, which comprises an upper PET1 layer, an upper circuit 2 layer, an upper insulating UV3 layer, an upper jumper 4 layer, an upper waterproof PET ink 5 layer, an upper exhaust duct 6 layer, a lower waterproof PET ink 7 layer, a lower jumper 8 layer, a lower insulating UV9 layer, a lower circuit 10 layer and a lower PET11 layer, which are arranged from top to bottom; wherein, the upper layer exhaust groove 6 is printed on the upper layer waterproof PET printing ink 5 in a whole printing way.

The upper-layer circuit 2, the upper-layer insulating UV3, the upper-layer jumper wire 4, the upper-layer waterproof PET printing ink 5 and the upper-layer exhaust groove 6 are sequentially printed on the upper-layer PET1, and the upper-layer waterproof PET printing ink 5 completely covers the upper-layer circuit 2, the upper-layer insulating UV3 and the upper-layer jumper wire 4; lower floor's circuit 10, the insulating UV9 of lower floor, lower floor's wire jumper 8 and the waterproof PET printing ink 7 of lower floor print in proper order on the lower floor PET11, just the waterproof PET printing ink 7 of lower floor will lower floor's circuit 10, the insulating UV9 of lower floor and the full coverage of lower floor's wire jumper 8.

In the embodiment 1, the conventional waterproof glue is replaced by the waterproof PET printing ink which is developed specially for the PET material, so that the combination of the waterproof PET printing ink and the PET material is firmer, and the whole layer of waterproof PET printing ink is printed on the upper layer of PET1 or the lower layer of PET11 in a full-page covering mode, so that the waterproof performance of the flexible circuit board is greatly improved; because the structure of printing the waterproof PET printing ink by full-page covering is adopted, the upper and lower electrical parts are not required to be isolated by the middle layer PET spacer, so that the thickness of the flexible circuit board is integrally reduced, the flexible circuit board is lighter and thinner, and the pressing performance is better; because the whole upper layer exhaust groove 6 is directly printed on the whole-plate covered upper layer waterproof PET printing ink 5, the exhaust performance is better, and the sensitivity and the hand feeling when the key is pressed are effectively improved.

Example 2:

the difference between this example 2 and example 1 is that the vent grooves were printed in full-page on the lower water repellent PET ink 7 only, i.e., one lower vent groove was printed in full-page on the lower water repellent PET ink 7.

Example 3:

example 3 differs from examples 1 and 2 in that the vent grooves were printed in full-page on both the upper waterproof PET ink 5 and the lower waterproof PET ink 7, i.e., the upper waterproof PET ink 5 was printed in full-page with an upper vent groove 6 and the lower waterproof PET ink 7 was printed in full-page with a lower vent groove.

Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible circuit board with a waterproof function is characterized by comprising an upper layer of PET (1), an upper layer of circuit (2), an upper layer of insulating UV (3), an upper layer of jumper (4), upper layer of waterproof PET printing ink (5), lower layer of waterproof PET printing ink (7), a lower layer of jumper (8), lower layer of insulating UV (9), a lower layer of circuit (10) and a lower layer of PET (11), which are sequentially arranged from top to bottom;

the upper circuit (2), the upper insulating UV (3), the upper jumper (4) and the upper waterproof PET printing ink (5) are sequentially printed on the upper PET (1), and the upper waterproof PET printing ink (5) completely covers the upper circuit (2), the upper insulating UV (3) and the upper jumper (4);

the lower-layer circuit (10), the lower-layer insulating UV (9), the lower-layer jumper wire (8) and the lower-layer waterproof PET printing ink (7) are sequentially printed on the lower-layer PET (11), and the lower-layer circuit (10), the lower-layer insulating UV (9) and the lower-layer jumper wire (8) are fully covered by the lower-layer waterproof PET printing ink (7);

and a layer of exhaust groove is printed on the upper waterproof PET printing ink (5) or the lower waterproof PET printing ink (7) in a full-page manner.

2. The flexible circuit board with improved waterproof function as claimed in claim 1, wherein the upper layer waterproof PET printing ink (5) is printed with an upper layer exhaust groove (6) in full page.

3. The flexible circuit board with the waterproof function improved as claimed in claim 1, wherein the lower waterproof PET printing ink (7) is printed with a lower exhaust groove in a full-page mode.

4. The flexible circuit board with the waterproof function improved as claimed in claim 1, wherein the upper layer of waterproof PET printing ink (5) is printed with an upper layer of exhaust groove (6) in an integral mode, and the lower layer of waterproof PET printing ink (7) is printed with a lower layer of exhaust groove in an integral mode.