CN213462436U - Flexible circuit board assembly, fingerprint identification module and electronic equipment - Google Patents
Flexible circuit board assembly, fingerprint identification module and electronic equipment Download PDFInfo
- Publication number
- CN213462436U CN213462436U CN202022260252.1U CN202022260252U CN213462436U CN 213462436 U CN213462436 U CN 213462436U CN 202022260252 U CN202022260252 U CN 202022260252U CN 213462436 U CN213462436 U CN 213462436U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- flexible circuit
- electronic components
- reinforcing
- fingerprint identification
- 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
Landscapes
- Structure Of Printed Boards (AREA)
Abstract
The utility model discloses a flexible circuit board subassembly and fingerprint identification module and electronic equipment, wherein, the flexible circuit board subassembly includes a plurality of electronic components, flexible circuit board and strengthens the subassembly, and electronic components locates flexible circuit board one side and is connected with flexible circuit board, strengthens the subassembly and locates the flexible circuit board opposite side and be connected with flexible circuit board, strengthens the subassembly and includes a plurality of reinforcement pieces, and electronic components corresponds the setting with the reinforcement piece, and the reinforcement piece is connected with flexible circuit board. Through cutting apart into a plurality of reinforcement pieces with strengthening the subassembly, the reinforcement piece corresponds the setting with electronic components to on a plurality of reinforcement pieces are shared in a plurality of electronic components's warpage, can avoid overlapping all electronic components's warpage on a reinforcement piece, with the reinforcing subassembly warpage degree that reduces greatly, make whole flexible circuit board structure roughness more.
Description
Technical Field
The utility model relates to a flexible circuit board technical field especially relates to a flexible circuit board subassembly and fingerprint identification module and electronic equipment.
Background
The flexible circuit board is present more common circuit board, and one side of flexible circuit board is equipped with many electronic components, and the flexible circuit board opposite side is equipped with the reinforcement piece and is used for improving the intensity of flexible circuit board, but some electronic components self have certain warpage, and electronic components's warpage also can lead to the reinforcement piece and then the warpage, and the warpage range that can lead to the reinforcement piece on a reinforcement piece is superimposed to a plurality of electronic components increases to lead to the roughness further variation of flexible circuit board.
At present, fingerprint identification technology has also become a standard on mobile phones. As shown in fig. 1 to 5, the fingerprint identification module includes a fingerprint identification chip 1, a flexible circuit board 2 and a reinforcing sheet 3 (reinforcing steel sheet), the fingerprint identification chip 1 is disposed above the flexible circuit board 2 and electrically connected to the flexible circuit board 2, and the reinforcing sheet 3 is disposed below the flexible circuit board 2 and enhances the strength of the flexible circuit board 2. On present ultra-thin optics fingerprint scheme, the multi-chip scheme (a plurality of fingerprint identification chips 1 that use are used for fingerprint identification promptly) has appeared, is favorable to improving fingerprint identification's area, like whole screen can all carry out fingerprint identification's module, great improvement user's fingerprint identification human-computer interaction's experience.
What adopt in the conventional multichip scheme is that the reinforcing steel sheet of great area bears, and the reinforcing steel sheet area is big more, the internal stress of reinforcing steel sheet is big more, there is crooked warpage more easily, and single fingerprint identification chip 1 self has certain warpage, fingerprint identification chip 1 combines the back with the reinforcing steel sheet, because stress is great in the glue curing process, arouse the reinforcing steel sheet and then a plurality of fingerprint identification chips 1 further stack deformation (like figure 5), therefore caused the whole roughness of fingerprint identification module further variation, influence the whole function of fingerprint identification module.
SUMMERY OF THE UTILITY MODEL
In order to overcome the shortcoming and the deficiency that exist among the prior art, the utility model aims to provide a flexible circuit board subassembly and fingerprint identification module and electronic equipment to solve at least one kind of problem among the prior art.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a flexible circuit board assembly, including a plurality of electronic components, flexible circuit board and enhancement subassembly, electronic components locates flexible circuit board one side and with flexible circuit board is connected, it locates to strengthen the subassembly flexible circuit board opposite side and with flexible circuit board is connected, it includes a plurality of reinforcement pieces to strengthen the subassembly, electronic components with the reinforcement piece corresponds the setting, just the reinforcement piece with flexible circuit board is connected.
Further, the electronic component is a chip.
Further, the reinforcing sheet is a steel sheet.
Further, at least one side of the reinforcing sheet is nonlinear.
Further, the side edges of the adjacent reinforcing pieces can be mutually embedded.
Further, a gap is arranged between every two adjacent reinforcing pieces, and the width of the gap is smaller than or equal to the distance between every two adjacent electronic components.
Furthermore, each electronic component is at least correspondingly provided with one reinforcing sheet, or each reinforcing sheet is at least correspondingly provided with one electronic component.
The utility model also provides a fingerprint identification module, include above the flexible circuit board subassembly.
Furthermore, the electronic component in the flexible circuit board assembly is a fingerprint identification chip.
The utility model also provides an electronic equipment, include as above fingerprint identification module.
The utility model has the advantages that: the flexible circuit board assembly comprises a plurality of electronic components, a flexible circuit board and a reinforcing assembly, the electronic components are arranged on one side of the flexible circuit board and connected with the flexible circuit board, the reinforcing assembly is arranged on the other side of the flexible circuit board and connected with the flexible circuit board, the reinforcing assembly comprises a plurality of reinforcing pieces, the electronic components correspond to the reinforcing pieces, and the reinforcing pieces are connected with the flexible circuit board. Through cutting apart into a plurality of reinforcement pieces with strengthening the subassembly, the reinforcement piece corresponds the setting with electronic components to on a plurality of reinforcement pieces are shared in a plurality of electronic components's warpage, can avoid overlapping all electronic components's warpage on a reinforcement piece, with the reinforcing subassembly warpage degree that reduces greatly, make whole flexible circuit board structure roughness more.
Drawings
FIG. 1 is a schematic top view of a fingerprint recognition module in the prior art;
FIG. 2 is a schematic cross-sectional view of a fingerprint recognition module in the prior art;
FIG. 3 is a schematic bottom view of a fingerprint recognition module according to the prior art;
FIG. 4 is a schematic top view of a reinforcing sheet of the prior art;
FIG. 5 is a schematic diagram of a side view of a reinforcing sheet in the prior art;
fig. 6 is a schematic top view of a fingerprint identification module according to an embodiment of the present invention;
fig. 7 is a schematic bottom view of a fingerprint identification module according to an embodiment of the present invention;
fig. 8 is a schematic top view of a reinforcement assembly according to a first embodiment of the present invention;
fig. 9 is a schematic top view of a reinforcement assembly according to a second embodiment of the present invention;
fig. 10 is a schematic top view of a reinforcement assembly according to a third embodiment of the present invention.
In the figure: the electronic component 10, the flexible circuit board 20, the external component 21, the reinforcing layer 22, the signal transmission interface 23, the reinforcing assembly 30, the reinforcing sheet 31, and the gap 32.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments for the specific embodiments, structures, features and effects of the flexible circuit board assembly, the fingerprint identification module and the electronic device according to the present invention as follows:
[ example one ]
Fig. 6 is the structural schematic diagram of overlooking of flexible circuit board assembly in the first embodiment of the present invention, fig. 7 is the structural schematic diagram of overlooking of flexible circuit board assembly in the first embodiment of the present invention, and fig. 8 is the structural schematic diagram of overlooking of reinforcement assembly in the first embodiment of the present invention.
As shown in fig. 6 to 8 and refer to fig. 2, the embodiment of the utility model provides a pair of fingerprint identification module, the fingerprint identification module includes flexible circuit board assembly, flexible circuit board assembly includes a plurality of electronic components 10, flexible circuit board 20 and reinforcement assembly 30, a plurality of electronic components 10 set up in one side of flexible circuit board 20 and all are connected with flexible circuit board 20, reinforcement assembly 30 locates the opposite side of flexible circuit board 20 and is connected with flexible circuit board 20, reinforcement assembly 30 includes a plurality of reinforcement pieces 31, electronic components 10 corresponds the setting with reinforcement piece 31, and reinforcement piece 31 is connected with flexible circuit board 20.
Further, each reinforcing patch 31 corresponds to at least one electronic component 10, or each electronic component 10 corresponds to at least one reinforcing patch 31. In the present embodiment, referring to fig. 2, the plurality of electronic components 10 are disposed on the upper side of the flexible circuit board 20, and the reinforcement member 30 is disposed on the lower side of the flexible circuit board 20. The number of the reinforcing pieces 31 is the same as the number of the electronic components 10, and the reinforcing pieces 31 correspond to the electronic components 10 one by one (one reinforcing piece 31 corresponds to one electronic component 10). Of course, in other embodiments, one reinforcing patch 31 may correspond to two or three electronic components 10, or a plurality of reinforcing patches 31 may correspond to each electronic component 10, for example, two or three reinforcing patches 31 correspond to one electronic component 10.
Wherein, electronic components 10 are the chip, and electronic components 10 is the fingerprint identification chip in this embodiment, and the fingerprint identification chip contains chip silicon chip and the regional surperficial microlens structure of response, has a plurality of little integrated circuits on the electronic components 10. The flexible printed circuit board 20 may be a flexible printed circuit board or a relatively thin rigid flexible printed circuit board, and the flexible printed circuit board is a flexible printed circuit board with high reliability and excellent performance, which is made of polyimide or polyester film as a base material. The flexible printed circuit board or FPC for short has the characteristics of high wiring density, light weight and thin thickness. The rigid flexible circuit board is made of a phenolic aldehyde paper laminated board, an epoxy paper laminated board, a polyester glass felt laminated board or an epoxy glass cloth laminated board serving as a base material. The flexible circuit board 20 has a plurality of lines printed thereon. The electronic component 10 is attached above the flexible circuit board 20 by a die attach adhesive (DAF adhesive or thermosetting adhesive) and electrically connected to the flexible circuit board 20, and for further details of the electronic component 10 and the flexible circuit board 20, reference is made to the prior art, which is not repeated herein.
In the present embodiment, the number of the electronic components 10 is preferably four, and the reinforcing member 30 is divided into four reinforcing pieces 31, and each electronic component 10 corresponds to one reinforcing piece 31. The reinforcing member 30 is adhered to the lower side of the flexible circuit board 20 by an adhesive, and the reinforcing member 30 is preferably made of steel. In other embodiments, the number of the electronic components 10 may be two or more, for example, three or five.
Further, at least one side of the reinforcing plate 31 is non-linear, the sides of two adjacent reinforcing plates 31 can be inserted into each other, specifically, the sides of two adjacent reinforcing plates 31 are matched, and the sides of two adjacent reinforcing plates 31 can be connected to each other correspondingly, or the sides of two adjacent reinforcing plates 31 are matched, a gap 32 is formed between two adjacent reinforcing plates 31, and the side of one reinforcing plate 31 can be inserted into one side of the adjacent reinforcing plate 31 correspondingly (specifically, refer to fig. 8). In this embodiment, the adjacent side edges of two adjacent reinforcing pieces 31 are both of a zigzag structure (for example, a zigzag structure), and the adjacent side edges of two adjacent reinforcing pieces 31 are both bent along the side edge of the corresponding electronic component 10, as shown in fig. 6 to 8. The reinforcing component 30 is divided by adopting a broken line type structure, and the adjacent two reinforcing pieces 31 are embedded end to end, so that the flexible circuit board 20 can be effectively prevented from being bent and broken in the same direction due to the embedded design of the broken line type structure. Of course, in other embodiments, the adjacent sides of two adjacent reinforcing sheets 31 may also be both wave-shaped structures, and the adjacent sides of two adjacent reinforcing sheets 31 both extend along the side between the corresponding electronic components 10, or the adjacent sides of two adjacent reinforcing sheets 31 may also be both linear structures.
In this embodiment, a gap 32 is provided between two adjacent reinforcing sheets 31, and the gap 32 corresponds to the gap between two adjacent electronic components 10. The shape of the gap 32 is the same as the shape of the side edge between two adjacent reinforcing plates 31, and the shape of the gap 32 may also be a broken line type structure, a straight line type structure or a wave type structure. Of course, in other embodiments, there may be no gap 32 between two adjacent reinforcing sheets 31, i.e., two sides between two adjacent reinforcing sheets 31 are disposed closely.
Further, the width of the gap 32 is smaller than or equal to the distance between two adjacent electronic components 10, so that the projection of the reinforcing sheet 31 on the flexible circuit board 20 completely covers the electronic components 10, and the electronic components 10 are prevented from being damaged when being bent.
Further, the reinforcement member 30 is preferably a steel plate, and the reinforcing sheet 31 is preferably a steel sheet.
In this embodiment, the external component 21 is disposed on the flexible circuit board 20, and the external component 21 and the reinforcing component 30 are staggered in the corresponding region of the flexible circuit board 20. The external component 21 may be a component of a protection circuit or a component for converting signals received by the electronic component 10.
Furthermore, a reinforcing layer 22 is further disposed on the flexible printed circuit 20, the external component 21 and the reinforcing layer 22 are corresponding to each other and disposed on the upper and lower sides of the flexible printed circuit 20, the external component 21 is disposed on the upper side of the flexible printed circuit 20, and the reinforcing layer 22 is disposed on the lower side of the flexible printed circuit 20. The stiffening layer 22 is preferably a steel sheet to improve the strength of the flexible circuit board 20 and prevent the external component 21 from being broken.
Further, the flexible circuit board 20 is further provided with a signal transmission interface 23, and the signal transmission interface 23 is disposed at a distal end of the flexible circuit board 20 away from the electronic component 10. The signal transmission interface 23 is connected to the processor of the mobile phone and is used for transmitting the signal sensed by the electronic component 10 to the processor for processing.
[ example two ]
Fig. 9 is a schematic top view of a reinforcement assembly according to a second embodiment of the present invention. As shown in fig. 9, the fingerprint identification module according to the second embodiment of the present invention is substantially the same as the fingerprint identification module according to the first embodiment (fig. 6 to 8), except that, in this embodiment, the number of the reinforcing pieces 31 is half of the number of the electronic components 10, and one reinforcing piece 31 corresponds to two electronic components 10. For example, the number of the reinforcing sheets 31 is two, and the number of the electronic components 10 is four.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
[ third example ]
Fig. 10 is a schematic top view of a reinforcement assembly according to a third embodiment of the present invention. As shown in fig. 10, the fingerprint identification module according to the third embodiment of the present invention is substantially the same as the fingerprint identification module according to the first embodiment (fig. 6 to 8), except that in this embodiment, the number of the electronic components 10 is half of the number of the reinforcing pieces 31, and one electronic component 10 corresponds to two reinforcing pieces 31. For example, the number of the reinforcing sheets 31 is four, and the number of the electronic components 10 is two.
It should be understood by those skilled in the art that the rest of the structure and the operation principle of the present embodiment are the same as those of the first embodiment, and are not described herein again.
The utility model also provides an electronic equipment, include as above fingerprint identification module.
To sum up, the utility model discloses a cut apart into a plurality of reinforcement pieces 31 and correspond the setting with electronic components 10 with strengthening the subassembly 30, can avoid a plurality of electronic components 10's warpage stack to strengthen subassembly 30 warpage degree, make whole fingerprint identification module modular structure roughness more greatly reduces.
In this document, the terms upper, lower, left, right, front, rear and the like are used for defining the positions of the structures in the drawings and the positions of the structures relative to each other, and are only used for the clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims. It is also to be understood that the terms "first" and "second," etc., are used herein for descriptive purposes only and are not to be construed as limiting in number or order.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description in any form, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make some changes or modifications within the technical scope of the present invention without departing from the technical scope of the present invention, and the technical contents of the above disclosure can be utilized to make equivalent embodiments, but the technical contents of the present invention are not broken away from, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a flexible circuit board assembly, its characterized in that includes a plurality of electronic components, flexible circuit board and strengthens the subassembly, electronic components locates flexible circuit board one side and with flexible circuit board is connected, strengthen the subassembly and locate flexible circuit board opposite side and with flexible circuit board is connected, it includes a plurality of reinforcement pieces to strengthen the subassembly, electronic components with the reinforcement piece corresponds the setting, just the reinforcement piece with flexible circuit board is connected.
2. The flexible circuit board assembly of claim 1, wherein the electronic component is a chip.
3. The flexible circuit board assembly of claim 1, wherein the stiffener is a steel sheet.
4. The flexible circuit board assembly of claim 1, wherein at least one side of the stiffener is non-linear.
5. The flexible circuit board assembly of claim 1, wherein the side edges of adjacent reinforcing patches are capable of being inserted into each other.
6. The flexible circuit board assembly of claim 1, wherein a gap is disposed between adjacent reinforcing patches, and a width of the gap is smaller than or equal to a distance between two adjacent electronic components.
7. The flexible circuit board assembly of claim 1, wherein at least one stiffener is disposed for each electronic component, or at least one electronic component is disposed for each stiffener.
8. A fingerprint identification module comprising the flexible circuit board assembly of any one of claims 1-7.
9. The fingerprint identification module of claim 8, wherein the electronic component in the flexible circuit board assembly is a fingerprint identification chip.
10. An electronic device comprising the fingerprint recognition module of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260252.1U CN213462436U (en) | 2020-10-12 | 2020-10-12 | Flexible circuit board assembly, fingerprint identification module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022260252.1U CN213462436U (en) | 2020-10-12 | 2020-10-12 | Flexible circuit board assembly, fingerprint identification module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213462436U true CN213462436U (en) | 2021-06-15 |
Family
ID=76291296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022260252.1U Active CN213462436U (en) | 2020-10-12 | 2020-10-12 | Flexible circuit board assembly, fingerprint identification module and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213462436U (en) |
-
2020
- 2020-10-12 CN CN202022260252.1U patent/CN213462436U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109859642B (en) | Display panel and display device | |
| CN110062524B (en) | Binding structure, display module and display device | |
| JP2003317060A (en) | Ic card | |
| WO2023206916A1 (en) | Ultrasonic fingerprint recognition apparatus and electronic device | |
| CN206136449U (en) | FPC board | |
| CN113436530B (en) | Display module, manufacturing method thereof and display device | |
| CN114822234A (en) | Flexible display module and preparation method thereof | |
| CN113543476B (en) | Circuit board assembly, manufacturing method thereof and display device | |
| CN101593053A (en) | Touch control display apparatus | |
| CN115424306A (en) | Ultrasonic fingerprint identification device and electronic equipment | |
| US11138407B2 (en) | Fingerprint recognition module and manufacturing method therefor, display panel and display apparatus | |
| CN213462436U (en) | Flexible circuit board assembly, fingerprint identification module and electronic equipment | |
| CN215581236U (en) | Screen module, display assembly and electronic equipment | |
| WO2024093585A1 (en) | Display device | |
| CN209911948U (en) | Non-cavity type laminated assembly structure suitable for flexible screen | |
| CN111191635A (en) | Fingerprint identification module and fingerprint identification display device | |
| CN205912335U (en) | Regional FPC golden finger connection structure of FOGBonding | |
| CN115641619A (en) | Ultrasonic fingerprint identification device and electronic equipment | |
| CN210776724U (en) | Optical fingerprint module and electronic equipment | |
| CN210868314U (en) | Substrate, circuit board and electronic device | |
| CN211700096U (en) | Backlight control module for keyboard | |
| CN113345331A (en) | Display module | |
| CN218755572U (en) | Single copper foil tape of leading of twice type | |
| CN213874740U (en) | SMD flexible pressure sensor, forced induction module and electronic equipment | |
| CN218825598U (en) | Ultrasonic fingerprint identification device and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |