CN216930403U - Transparent flexible circuit board and electronic product - Google Patents
Transparent flexible circuit board and electronic product Download PDFInfo
- Publication number
- CN216930403U CN216930403U CN202220439806.0U CN202220439806U CN216930403U CN 216930403 U CN216930403 U CN 216930403U CN 202220439806 U CN202220439806 U CN 202220439806U CN 216930403 U CN216930403 U CN 216930403U
- Authority
- CN
- China
- Prior art keywords
- layer
- circuit board
- transparent
- base material
- flexible circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a transparent flexible circuit board and an electronic product, wherein the circuit board comprises a transparent PET (polyethylene terephthalate) base material, an upper base material adhesive, a circuit layer and an electroplated copper-tin layer, the upper base material adhesive is adhered on the transparent PET base material, the circuit layer is arranged on the upper base material adhesive, the electroplated copper-tin layer is arranged above the circuit layer, and the electroplated copper-tin layer is arranged at a welding disc or a welding pin position on the circuit layer. The transparent flexible circuit board is used as a special and novel flexible circuit board and has the bending characteristic of a common flexible circuit board and the automatic installation function of the rigid PCB which is suitable for element installation and reflow soldering.
Description
Technical Field
The utility model relates to the technical field of circuit boards, in particular to a transparent flexible circuit board and an electronic product.
Background
Along with the continuous development and progress of the electronic technology industry, electronic products are more and more abundant, the requirements for electronic product accessories are more and more high, a circuit board is one of essential accessories in the electronic products, the traditional circuit board is a PCB (printed circuit board), commonly called a hard board, has higher hardness, cannot be bent, and is not convenient enough to be applied in some special occasions, so that people invent an FPC (flexible printed circuit), commonly called a soft board and also called a flexible circuit board. The transparency of both PCB and FPC is low, and the transparent flexible circuit board can not meet the requirements of people gradually when applied to certain occasions with special requirements, so that the transparent flexible circuit board is urgently needed in the industry.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a transparent flexible circuit board, aiming at improving the transparency of the flexible circuit board.
In order to achieve the purpose, the transparent flexible circuit board provided by the utility model comprises a transparent PET substrate, an upper substrate adhesive, a circuit layer and an electroplated copper-tin layer;
the upper base material adhesive is adhered to the transparent PET base material, the circuit layer is arranged on the upper base material adhesive, the copper-tin electroplating layer is arranged above the circuit layer, and the copper-tin electroplating layer is arranged on a bonding pad or a welding pin on the circuit layer.
Optionally, a transparent cover film is fixedly arranged above the circuit layer.
Optionally, a cover film adhesive layer is arranged between the transparent cover film and the circuit layer, and the transparent cover film and the circuit layer are bonded together through the cover film adhesive layer.
Optionally, a hardness reinforcing area is arranged on the circuit board, and a reinforcing PET layer is fixedly arranged below the transparent PET substrate at the hardness reinforcing area.
Optionally, a bottom base material adhesive is arranged between the reinforced PET layer and the transparent PET base material, and the reinforced PET layer is fixedly adhered below the transparent PET base material through the bottom base material adhesive.
Optionally, the number of the reinforced PET layers is multiple segments, and the multiple segments of the reinforced PET layers are arranged at intervals along the length or width direction of the circuit board.
Optionally, the relation between the total area S1 of the reinforced PET layer and the area S2 of one side of the transparent PET base material is satisfied, and S1: S2 is 1/6-1/3.
Optionally, the relation between the thickness d1 of the reinforced PET layer and the thickness d2 of the transparent PET base material is satisfied, and d1: d2 is 1/4-1.
The utility model also provides an electronic product which comprises a transparent flexible circuit board, wherein the circuit board comprises a transparent PET (polyethylene terephthalate) base material, an upper base material adhesive, a circuit layer and an electroplated copper-tin layer;
the upper base material adhesive is adhered to the transparent PET base material, the circuit layer is arranged on the upper base material adhesive, the copper-tin electroplating layer is arranged above the circuit layer, and the copper-tin electroplating layer is arranged on a bonding pad or a welding pin on the circuit layer.
The utility model has the beneficial effects that: the transparent flexible circuit board is used as a special and novel flexible circuit board and has the bending characteristic of a common flexible circuit board and the automatic installation function of the rigid PCB which is suitable for element installation and reflow soldering. The utility model overcomes the defects that the film-made and PET printed conductor circuit board can not resist high and low conductor resistance. The SPET transparent flexible circuit board with high transparency can be widely applied to illumination electric decoration of entertainment equipment, peripheral driving of liquid crystal and organic EL, vehicle-mounted LED reflectors and tail lamps, various traffic indicators, display surfaces (electrostatic sensors), indoor space electric decoration of a concert hall and a storefront, outdoor advertising electric decoration, portable guitars, antennas, medical equipment and the like, and has bright market prospect.
The utility model will be further described with reference to the accompanying drawings and specific embodiments.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a partial cross-sectional structure of a transparent flexible circuit board according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of another embodiment of a transparent flexible circuit board according to the present invention;
fig. 3 is a schematic structural diagram of a transparent flexible circuit board according to an embodiment of the utility model.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
2 | Upper base material adhesive |
| 3 | |
4 | Copper tin layer of electroplating |
| 5 | Adhesive layer of |
6 | |
| 7 | Adhesive for |
8 | Reinforced PET layer |
| 9 | |
10 | Region of increased hardness |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, "and/or" in the whole text includes three schemes, taking a and/or B as an example, including a technical scheme, and a technical scheme that a and B meet simultaneously; in addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model mainly provides a transparent flexible circuit board which is mainly applied to electronic products.
The specific structure of the transparent flexible circuit board will be mainly described below.
Referring to fig. 1 to 3, in an embodiment of the present invention, the transparent flexible circuit board
Referring to fig. 1, the utility model mainly includes a transparent PET substrate 1, an upper substrate adhesive 2, a circuit layer 3 and an electroplated copper-tin layer 4, the upper substrate adhesive 2 is adhered on the transparent PET substrate 1, the circuit layer 3 is disposed on the upper substrate adhesive 2, the circuit layer 3 is a circuit on a circuit board, the structure is determined according to the circuit design on the circuit board, the circuit layer 3 is adhered on the transparent PET substrate 1 through the upper substrate adhesive 2, in this embodiment, the circuit layer 3 is formed by a copper plating process, the electroplated copper-tin layer 4 is disposed above the circuit layer 3, and the electroplated copper-tin layer 4 is disposed at a pad, a soldering pin, and other positions.
In this embodiment, a transparent cover film 6 is fixedly arranged above the circuit layer 3 and used for protecting the circuit layer 3, a cover film adhesive layer 5 is arranged between the transparent cover film 6 and the circuit layer 3, and the transparent cover film 6 is adhered to the circuit layer 3 through the cover film adhesive layer 5.
The structure is a basic structure of the utility model, the basic structure is soft, the basic structure is defined as a flexible area 9, some parts need to be reinforced in hardness, a hardness reinforcing area 10 is arranged at the position, a bottom layer substrate adhesive 7 is arranged below a transparent PET substrate 1 at the hardness reinforcing area 10, a reinforcing PET layer 8 is fixedly arranged below the bottom layer substrate adhesive 7, namely, the reinforcing PET layer 8 is fixedly adhered below the transparent PET substrate 1 through the bottom layer substrate adhesive 7, and the local hardness reinforcing effect is achieved.
The transparent flexible circuit board is used as a special and novel flexible circuit board and has the bending characteristic of a common flexible circuit board and the automatic installation function of the rigid PCB which is suitable for element installation and reflow soldering. The utility model overcomes the defects that the film manufacturing and PET printed conductor circuit board can not resist high and low conductor resistance. The SPET transparent flexible circuit board with high transparency can be widely applied to illumination electric decoration of entertainment equipment, peripheral driving of liquid crystal and organic EL, vehicle-mounted LED reflectors and tail lamps, various traffic indicators, display surfaces (electrostatic sensors), indoor space electric decoration of a concert hall and a storefront, outdoor advertising electric decoration, portable guitars, antennas, medical equipment and the like, and has bright market prospect.
Referring to fig. 2 to 3, in some embodiments, in order to improve the compatibility between the strength and the flexibility of the transparent flexible circuit board, a relationship between a total area S1 of the reinforced PET layer and an area S2 of a side of the transparent PET substrate is satisfied, and S1: S2 are 1/6 to 1/3. In this embodiment, the total area S1 of the reinforced PET layer refers to the bonding area between the reinforced PET layer and the transparent PET substrate, and when the number of the reinforced PET layers is plural, the total area S1 refers to the total bonding area between the reinforced PET layers and the transparent PET substrate. The area S2 on the side of the transparent PET substrate means the area on the side to which the reinforcing PET layer is attached, and can be understood as the sum of the total areas of the flexible region and the hardness reinforcing region. The ratio of the total area S1 of the reinforcing PET layer to the area S2 of the side of the transparent PET substrate on which it is located, S1: S2, cannot be too large or too small. When the ratio of S1 to S2 is smaller than 1/6, the area covered by the reinforced PET layer is small, and the strength requirement of the transparent flexible circuit board under some working conditions is difficult to guarantee, so that the working stability of the transparent flexible circuit board is unreliable. When the ratio of S1 to S2 is greater than 1/3, the area covered by the reinforced PET layer is large, which affects the flexibility of the transparent flexible circuit board and is not beneficial to the use of the transparent flexible circuit board in some occasions with high flexibility.
Also, in some embodiments, in order to improve the compatibility between the strength and the flexibility of the transparent flexible circuit board, the relation between the thickness d1 of the reinforced PET layer and the thickness d2 of the transparent PET substrate is satisfied, and d1: d2 is 1/4-1. The ratio d1: d2 between the thickness d1 of the reinforcing PET layer and the thickness d2 of the transparent PET substrate cannot be too large nor too small. When d1: d2 is smaller than 1/4, the thickness of the reinforced PET layer is small, and the strength requirement of the transparent flexible circuit board under some working conditions is difficult to guarantee, so that the working stability of the transparent flexible circuit board is not reliable enough. When d1: d2 is larger than 1, the thickness of the reinforced PET layer is larger, which affects the flexibility of the transparent flexible circuit board and is not beneficial to the use of the transparent flexible circuit board in some occasions with higher flexibility.
It is worth mentioning that, in some embodiments, in order to further improve the compatibility between the strength and the flexibility of the transparent flexible circuit board, the number of the reinforced PET layers is multiple, and the multiple reinforced PET layers are arranged at intervals along the length or width direction of the circuit board. Through the multistage that sets up to interval arrangement to strengthening the PET layer for transparent flexible circuit board's bulk strength obtains even increase, simultaneously, guarantees the flexibility in flexible region again. Especially, the arrangement of the area and the thickness of the reinforced PET layer is combined, so that the strength and the flexibility of the transparent flexible circuit board can reach a better state.
The present invention further provides an electronic product, which includes a housing and a transparent flexible circuit board, and the specific structure of the transparent flexible circuit board refers to the above embodiments, and since the electronic product adopts all the technical solutions of all the above embodiments, the electronic product at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. Wherein the transparent flexible circuit board is mounted within the housing.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A transparent flexible circuit board, its characterized in that: the circuit board comprises a transparent PET substrate, an upper substrate adhesive, a circuit layer and an electroplated copper-tin layer;
the upper base material adhesive is adhered to the transparent PET base material, the circuit layer is arranged on the upper base material adhesive, the copper-tin electroplating layer is arranged above the circuit layer, and the copper-tin electroplating layer is arranged on a bonding pad or a welding pin on the circuit layer.
2. The transparent flexible circuit board according to claim 1, wherein: and a transparent covering film is fixedly arranged above the circuit layer.
3. The transparent flexible circuit board of claim 2, wherein: a cover film adhesive layer is arranged between the transparent cover film and the circuit layer, and the transparent cover film and the circuit layer are adhered together through the cover film adhesive layer.
4. The transparent flexible circuit board of claim 1, wherein: the circuit board is provided with a hardness reinforcing area, and a reinforcing PET layer is fixedly arranged below the transparent PET base material at the hardness reinforcing area.
5. The transparent flexible circuit board of claim 4, wherein: the bottom base material viscose is arranged between the reinforced PET layer and the transparent PET base material, and the reinforced PET layer is fixedly adhered below the transparent PET base material through the bottom base material viscose.
6. The transparent flexible circuit board of claim 4, wherein: the quantity of strengthening the PET layer is the multistage, the multistage strengthen the PET layer and follow the length or the width direction interval setting of circuit board.
7. The transparent flexible circuit board of claim 4, wherein: the relation between the total area S1 of the reinforced PET layer and the area S2 of one side of the transparent PET base material on which the reinforced PET layer is arranged is satisfied, and S1: S2 is 1/6-1/3.
8. The transparent flexible circuit board of claim 4, wherein: the relation between the thickness d1 of the reinforced PET layer and the thickness d2 of the transparent PET base material is satisfied, and the ratio of d1 to d2 is 1/4-1.
9. An electronic product, characterized by comprising the transparent flexible circuit board according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220439806.0U CN216930403U (en) | 2022-03-02 | 2022-03-02 | Transparent flexible circuit board and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220439806.0U CN216930403U (en) | 2022-03-02 | 2022-03-02 | Transparent flexible circuit board and electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216930403U true CN216930403U (en) | 2022-07-08 |
Family
ID=82225469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220439806.0U Active CN216930403U (en) | 2022-03-02 | 2022-03-02 | Transparent flexible circuit board and electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216930403U (en) |
-
2022
- 2022-03-02 CN CN202220439806.0U patent/CN216930403U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6864187B2 (en) | Touch sensor | |
| CN216930403U (en) | Transparent flexible circuit board and electronic product | |
| CN111047993A (en) | Bendable transparent LED display screen and processing method | |
| CN206711515U (en) | LED display | |
| CN217588651U (en) | SMD transformer and PCBA circuit board | |
| JP6764974B1 (en) | Internally illuminated lighting device and a component for attaching a translucent surface material of the lighting device | |
| CN207268920U (en) | A kind of flexible and transparent LED display that can be self-driven | |
| CN105452755A (en) | Printed circuit board and illumination unit comprising same printed circuit board | |
| CN101673725A (en) | Flexible circuit board | |
| CN211019413U (en) | Wiring type flexible circuit board | |
| CN202144992U (en) | FPC (flexible printed circuit board) illuminating device capable of being multi-directionally bent | |
| CN205071457U (en) | Multilayer flexible circuit board of static is prevented in realization | |
| CN220554197U (en) | PCB board with buffering protective structure | |
| JP2006058828A (en) | Display device and light source therefor | |
| CN215453419U (en) | Electronic component mounting apparatus and display apparatus | |
| CN220324107U (en) | Flexible luminous device with staff | |
| CN214796552U (en) | Vehicle-mounted display screen with photosensitive function | |
| CN210925316U (en) | Transparent display screen | |
| CN218631233U (en) | Anti-dazzle horse race lamp screen structure | |
| CN216743999U (en) | Prevent torn on-vehicle backlight of circuit board | |
| CN220087554U (en) | FPC reinforcement steel sheet with good bending property | |
| CN210350090U (en) | POS machine non-contact antenna and POS machine of printing storehouse dysmorphism | |
| CN220870647U (en) | Multidirectional bending LED soft lamp strip | |
| CN208402197U (en) | A kind of anti-break double flexible circuit board of POS machine | |
| CN212876194U (en) | Flexible circuit board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |