CN216795367U - Flexible circuit board with polyester film type protective layer - Google Patents
Flexible circuit board with polyester film type protective layer Download PDFInfo
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- CN216795367U CN216795367U CN202123351975.3U CN202123351975U CN216795367U CN 216795367 U CN216795367 U CN 216795367U CN 202123351975 U CN202123351975 U CN 202123351975U CN 216795367 U CN216795367 U CN 216795367U
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- circuit board
- flexible circuit
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- connector
- copper foil
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Abstract
The utility model provides a flexible circuit board with a polyester film type protective layer, which comprises: the flexible circuit board, the first connector and the second connector; the flexible circuit board is formed by combining a covering film protection film, an adhesive, a copper foil, an electromagnetic shielding film and a reinforcing plate from top to bottom in sequence, wherein the thickness of the covering film protection film is 1mil or 1/2 mil. According to the flexible circuit board with the polyester film type protective layer, the release paper is arranged at the top of the cover film protective film, so that circuit blocking cannot be caused even if the non-silicon release agent is transferred to the colloid and the circuit board when the flexible circuit board is used, and meanwhile, the release paper is also arranged at the bottom of the cover film protective film, so that the cover film protective film is in a closed state before the adhesive is pressed, foreign matters cannot be adhered to the cover film protective film and the copper foil before the cover film protective film and the copper foil are pressed through the adhesive, and the integral pressing effect of the adhesive is effectively improved.
Description
Technical Field
The utility model relates to the field of flexible circuit boards, in particular to a flexible circuit board with a polyester film type protective layer.
Background
The flexible printed circuit board is a flexible printed circuit board which is made of polyimide or polyester film as a base material and has high reliability and excellent performance. The flexible printed circuit board has the characteristics of high wiring density, light weight, thin thickness and good bending property, and is mainly used in products such as mobile phones, notebook computers, PDA (personal digital assistant), digital cameras, liquid crystal display modules LCM (liquid crystal module) and the like.
By embedding the circuit design on a bendable light and thin plastic sheet, a large number of precision components are stacked and embedded in a narrow and limited space, thereby forming a bendable flexible circuit. The circuit can be bent at will, is folded, has light weight, small volume, good heat dissipation and convenient installation, and breaks through the traditional interconnection technology.
However, in the production process of the conventional flexible circuit board, when the adhesive is not bonded, foreign matters such as dust are easily adhered, so that the adhesive loses the original function, the bonding effect is low, and the copper foil and the protective layer are easily separated or a gap is easily generated. Therefore, it is necessary to provide a flexible circuit board with a mylar shield to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flexible circuit board with a polyester film type protective layer, which solves the problem that foreign matters are easy to adhere to the circuit board before an adhesive is bonded.
In order to solve the above technical problems, the flexible circuit board with a mylar-type shield layer according to the present invention includes: the flexible circuit board, the first connector and the second connector;
the flexible circuit board is formed by combining a covering film protective film, an adhesive, a copper foil, an electromagnetic shielding film and a reinforcing plate from top to bottom in sequence, wherein the thickness of the covering film protective film is 1mil or 1/2 mil;
release paper is arranged at the top and the bottom of the cover film protective film;
adopt non-silicon from type paper, from type paper for carbamate from type coating, flexible circuit board is provided with two V type dog-ears for the Z style of calligraphy, the second connector passes through the soldering in one side at flexible circuit board top, cover the membrane protection film, electromagnetic shielding membrane all is connected through the adhesive bonding with the stiffening plate.
Preferably, the copper foil is electrolytic copper, the side with a glossy surface is a top, the side with a dull surface is a bottom, the thickness of the copper foil is 1oz or 1/2oz, and the copper foil is used for a circuit conduction function.
Preferably, the thickness of the reinforcing plate is 3-9 mil.
Preferably, a plurality of conducting strip grooves are formed in one side of the flexible circuit board, the first connector is mounted on the outer portion of one side of the flexible circuit board, a plug connector is mounted inside the first connector, the plug connector is an existing device, and a plurality of golden finger conducting connecting pieces are arranged inside the plug connector.
Preferably, the connecting block is all installed to the both sides of first connector, two the connecting rod is all installed at the back of connecting block, one side of connecting rod is provided with protruding button, the connecting rod is the U style of calligraphy, protruding button is the semicircle column type.
Preferably, the front and the back of the flexible circuit board are both provided with a clamping groove, one side of the inner wall of the clamping groove is provided with an arc surface, the other side of the inner wall of the clamping groove is provided with a groove, and the clamping groove is used for clamping one end of a connecting rod.
Preferably, the protection blocks are installed at two inner folding angles of the flexible circuit board and are made of rubber, and the protection blocks are V-shaped.
Compared with the related art, the flexible circuit board with the polyester film type protective layer provided by the utility model has the following beneficial effects:
the utility model provides a flexible circuit board with a polyester film type protective layer, wherein release paper is arranged at the top of a cover film protective film, the release paper adopts non-silicon release paper, mainly a carbamate release coating, so that circuit blocking cannot be caused even if the non-silicon release agent is transferred to colloid and a circuit board when the flexible circuit board is used, and the release paper is also arranged at the bottom of the cover film protective film, so that the cover film protective film is in a closed state before an adhesive is pressed, foreign matters cannot be adhered to the cover film protective film and a copper foil before the cover film protective film and the copper foil are pressed by the adhesive, and the integral pressing effect of the adhesive is effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a flexible circuit board with a mylar shield according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of the whole flexible circuit board provided by the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic structural diagram of a flexible circuit board with a mylar shield according to a second embodiment of the present invention;
reference numbers in the figures: 1. the flexible printed circuit board comprises a flexible printed circuit board body, 2, a first connector, 3, a conducting strip groove, 4, a plug connector, 5, a connecting block, 6, a connecting rod, 7, a protective block, 8, a second connector, 9, a groove, 10, a clamping groove, 11, an arc surface, 12, a convex button, 101, an electromagnetic shielding film, 102, a reinforcing plate, 103, a copper foil, 104, an adhesive, 105, a cover film protection film, 106 and release paper.
Detailed Description
The utility model is further described with reference to the following figures and embodiments.
First embodiment
Referring to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic structural diagram of a flexible circuit board with a mylar protective layer according to a first embodiment of the present invention; fig. 2 is a schematic structural diagram of the whole flexible circuit board provided by the present invention; fig. 3 is a partially enlarged view of a portion a in fig. 2. The flexible circuit board with the mylar-type shield layer includes: flexible circuit board 1, first connector 2 and second connector 8.
The flexible circuit board 1 is formed by combining a cover film protection film 105, an adhesive 104, a copper foil 103, an electromagnetic shielding film 101 and a reinforcing plate 102 in sequence from top to bottom, wherein the thickness of the cover film protection film 105 is 1mil or 1/2 mil.
The top and the bottom of cover film protection film 105 all are provided with from type paper 106, it adopts non-silicon from type paper to leave type paper from type paper 106, it leaves the type coating for the carbamate from type paper 106, flexible circuit board 1 is provided with two V type dog-ears for the Z style of calligraphy, second connector 8 is through tin soldering in one side at flexible circuit board 1 top, cover film protection film 105 adopts the polyester film material preparation, cover film protection film 105's surface is used for insulating, cover film protection film 105 bottom from type paper 106 tear when adhesive 104 pastes, electromagnetic shielding film 101 all is connected through the adhesive with reinforcing plate 102.
The copper foil 103 is electrolytic copper, one side with a glossy surface is a top, the surface of a dark side is a bottom, the thickness of the copper foil 103 is 1oz or 1/2oz, and the copper foil 103 is used for a circuit conduction function.
The thickness of stiffening plate 102 is 3mil ~9mil, a plurality of conducting strip grooves 3 have been seted up to one side of flexible circuit board 1, first connector 2 is installed in one side of flexible circuit board 1 outside, the internally mounted of first connector 2 has bayonet joint 4, bayonet joint 4 is current device, and inside is provided with a plurality of golden finger conductive contact pieces, and contacts with the conducting strip of conducting strip groove 3 inside.
Connecting block 5, two are all installed to the both sides of first connector 2 connecting rod 6 is all installed at the back of connecting block 5, one side of connecting rod 6 is provided with convex button 12, connecting rod 6 is the U style of calligraphy, convex button 12 is the semicircle column type.
The front and the back of flexible circuit board 1 have all been seted up joint groove 10, one side of joint groove 10 inner wall is provided with cambered surface 11, recess 9 is seted up to the opposite side of joint groove 10 inner wall, joint groove 10 is used for the one end of joint connecting rod 6, recess 9 is used for joint convex button 12.
When the flexible circuit board 1 is produced and assembled, the reinforcing plate 102 is bonded with the electromagnetic shielding film 101 through glue, then the electromagnetic shielding film 101 is bonded with the copper foil 103, the circuit in the circuit board is protected from external interference through the arrangement of the electromagnetic shielding film 101, then the top of the copper foil 103 is coated with the adhesive 104, the release paper 106 at the bottom of the cover film protection film 105 is torn off, the copper foil 103 and the cover film protection film 105 are pressed into a whole through the adhesive 104, and then the release paper 106 is attached to the top of the cover film protection film 105.
After the flexible circuit board 1 is assembled, the first connector 2 is inserted into the flexible circuit board 1 on one side of the conductive sheet grooves 3, and the connecting rod 6 drives the convex button 12 to be clamped into the clamping groove 10 and the groove 9 through pushing, so that the first connector 2 is more stably connected with the flexible circuit board 1.
Compared with the related art, the flexible circuit board with the polyester film type protective layer provided by the utility model has the following beneficial effects:
through set up release paper 106 at the top of covering membrane protection film 105, release paper 106 adopts non-silicon release paper, mainly for carbamate release coating, even non-silicon release agent shifts colloid and circuit board itself during the use, can not lead to the circuit separation yet, the bottom that lies in covering membrane protection film 105 simultaneously is provided with release paper 106 equally, thereby make covering membrane protection film 105 be in airtight state before adhesion agent 104 is pressed, thereby make covering membrane protection film 105 and copper foil 103 can not adhere the foreign matter before pressing through adhesion agent 104, the effectual effect that adhesion agent 104 whole was pressed that has improved.
Second embodiment
Referring to fig. 4, in particular, the flexible circuit board with the mylar protective layer according to the second embodiment of the present application is different in that protective blocks 7 are mounted at two inner corners of the flexible circuit board 1, the two protective blocks 7 are made of rubber, and the protective blocks 7 are V-shaped and used for bonding the inner corners of the flexible circuit board 1 by using an adhesive to prevent the flexible circuit board from being torn due to a force applied by a mistake.
Compared with the related art, the flexible circuit board with the polyester film type protective layer provided by the utility model has the following beneficial effects:
through adding in flexible circuit board 1 internal bend angle department and establishing protective block 7, protective block 7 is the rubber material, is connected with the internal bend angle department hot melt of flexible circuit board 1 for personnel can not touch or exert oneself too greatly because of the mistake and lead to tearing of circuit board when using flexible circuit board 1, make the very big promotion that the safety and stability of circuit board can obtain.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A flexible circuit board with a mylar-type protective layer, comprising: a flexible circuit board (1), a first connector (2) and a second connector (8);
the flexible circuit board (1) is formed by sequentially combining a covering film protection film (105), an adhesive (104), a copper foil (103), an electromagnetic shielding film (101) and a reinforcing plate (102) from top to bottom, wherein the thickness of the covering film protection film (105) is 1mil or 1/2 mil;
release paper (106) is arranged at the top and the bottom of the cover film protective film (105);
the release paper (106) is non-silicon release paper, and the release paper (106) is a carbamate release coating.
2. The mylar-shielded flexible circuit board of claim 1, wherein said copper foil (103) is electrolytic copper, the glossy side being the top and the dull side being the bottom, and the thickness of said copper foil (103) is 1oz or 1/2 oz.
3. The FPCB with the POF shield of claim 1, wherein the thickness of the stiffening plate (102) is 3-9 mils.
4. The flexible circuit board with mylar shield according to claim 1, wherein a plurality of conductive sheet slots (3) are formed in one side of the flexible circuit board (1), the first connector (2) is mounted on an outer portion of one side of the flexible circuit board (1), and the plug connector (4) is mounted inside the first connector (2).
5. The FPCB with the POM protective layer according to claim 1, wherein the first connector (2) is provided with connecting blocks (5) at two sides, the connecting rods (6) are arranged at the back of the two connecting blocks (5), and one side of each connecting rod (6) is provided with a convex button (12).
6. The flexible circuit board with the mylar protective layer according to claim 1, wherein the front surface and the back surface of the flexible circuit board (1) are both provided with a clamping groove (10), one side of the inner wall of the clamping groove (10) is provided with an arc surface (11), and the other side of the inner wall of the clamping groove (10) is provided with a groove (9).
7. The flexible circuit board with the mylar shield according to claim 1, wherein the two inner corners of the flexible circuit board (1) are provided with the shield blocks (7), and the two shield blocks (7) are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123351975.3U CN216795367U (en) | 2021-12-28 | 2021-12-28 | Flexible circuit board with polyester film type protective layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123351975.3U CN216795367U (en) | 2021-12-28 | 2021-12-28 | Flexible circuit board with polyester film type protective layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216795367U true CN216795367U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123351975.3U Active CN216795367U (en) | 2021-12-28 | 2021-12-28 | Flexible circuit board with polyester film type protective layer |
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| CN (1) | CN216795367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021184A1 (en) * | 2022-07-27 | 2024-02-01 | 瑞声光电科技(常州)有限公司 | Flexible circuit board |
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2021
- 2021-12-28 CN CN202123351975.3U patent/CN216795367U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021184A1 (en) * | 2022-07-27 | 2024-02-01 | 瑞声光电科技(常州)有限公司 | Flexible circuit board |
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