CN106648220B - Curved surface biological recognition module and manufacturing method thereof - Google Patents
Curved surface biological recognition module and manufacturing method thereof Download PDFInfo
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- CN106648220B CN106648220B CN201611021722.0A CN201611021722A CN106648220B CN 106648220 B CN106648220 B CN 106648220B CN 201611021722 A CN201611021722 A CN 201611021722A CN 106648220 B CN106648220 B CN 106648220B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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Abstract
The utility model provides a curved surface biological identification module, includes apron, chip, flexible circuit board and the stiffening plate that from top to bottom set gradually, the periphery of apron and chip is equipped with metal ring, its characterized in that: the chip is a flexible chip, the cover plate is a curved cover plate, the bottom surface of the metal ring is set to be a curved surface, and the chip, the flexible circuit board and the reinforcing plate are mutually attached together and bent along the same direction to be matched with the bottom surfaces of the curved cover plate and the metal ring so as to form a curved surface structure integrally. The curved surface biological recognition module can meet the requirements of curved surface appearance and curved surface structure, and the circuit is reliable in operation. The manufacturing method of the curved surface biological recognition module is convenient to process, reliable in connection of all parts and capable of meeting the requirements of curved surface appearance and curved surface structures.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a curved surface biological recognition module and a manufacturing method thereof.
Background
Along with the development of fingerprint identification technology, fingerprint identification functions have been widely applied to various electronic products. Especially, the requirements for disposing the biometric module on the front surface of the mobile phone are increasing, but the existing biometric module products are planar structures, which are difficult to satisfy the requirements for curved surface appearance and curved surface structure, such as mobile phones with curved surface screens.
Disclosure of Invention
The invention aims to solve the technical problems that: the curved surface biological recognition module can meet the requirements of curved surface appearance and curved surface structures and is reliable in circuit operation.
The technical scheme of the invention is as follows: the utility model provides a curved surface biological identification module, includes apron, chip, flexible circuit board and the stiffening plate that from top to bottom set gradually, the periphery of apron and chip is equipped with metal ring, its characterized in that: the chip is a flexible chip, the cover plate is a curved cover plate, the bottom surface of the metal ring is set to be a curved surface, and the chip, the flexible circuit board and the reinforcing plate are mutually attached together and bent along the same direction to be matched with the bottom surfaces of the curved cover plate and the metal ring so as to form a curved surface structure integrally.
The curved surface biological recognition module is used for mutually attaching the chip, the flexible circuit board and the reinforcing plate together and bending the chip, the flexible circuit board and the reinforcing plate along the same direction to be matched with the curved surfaces of the curved surface cover plate and the metal ring, so that a curved surface structure is integrally formed, the requirements of curved surface appearance and the curved surface structure can be met, the flexible chip and the flexible circuit board cannot be damaged in the bending process, and the normal operation of the circuit can be ensured.
Preferably, the curved cover plate is made of any one of sapphire, ceramic or glass, or is replaced by a coating. The coating is firm and durable by adopting sapphire, ceramic or glass, is not easy to damage, and has the advantages of light weight, strong adhesive force, firm adhesion, low cost and rich color selection.
Preferably, the reinforcing plate is made of any one of stainless steel, FR4 or PI. Stainless steel, FR4 or PI can provide good support strength and is strong and durable.
Preferably, the metal ring is made of stainless steel or aluminum alloy material. The stainless steel is firm and durable, the aluminum alloy is convenient to process, and the material selection requirement of the metal ring can be well met.
The invention aims to solve the other technical problems that: the manufacturing method of the curved surface biological recognition module is convenient to process, reliable in connection of all parts and capable of meeting the requirements of curved surface appearance and curved surface structures.
The technical scheme of the invention is as follows: a manufacturing method of a curved surface biological recognition module is characterized in that: it comprises the following steps:
(1) Taking a reinforcing plate, a flexible circuit board and a flexible chip in a plane state, bonding the reinforcing plate below the flexible circuit board, and welding the chip above the flexible circuit board;
(2) The reinforcing plate, the flexible circuit board and the chip are bent in the same direction through the first concave-convex die to be matched with the curved cover plate and the metal ring with the curved bottom surface, and the curved cover plate and the chip are well adhered;
(3) Taking a metal ring with a curved bottom surface, and pre-adhering the metal ring to a flexible circuit board;
(4) And compacting and bonding the metal ring on the flexible circuit board through the second concave-convex die.
After the method is adopted, the invention has the following advantages:
the manufacturing method of the curved surface biological recognition module is characterized in that the reinforcing plate, the flexible circuit board and the chip are bonded together in a planar state, so that the operation is convenient and the bonding is firm; then, the reinforcing plate, the flexible circuit board and the chip are pressed into a curved surface state only through the first concave-convex die, the curved surface is easy to form, and the connection between the parts is firmer in the pressing process; finally, the metal ring which is pre-adhered to the flexible circuit board and has the bottom surface of the curved surface is pressed and adhered through the second concave-convex die, so that the curved surface biological recognition module is manufactured, the whole processing process is very convenient, all the parts are adhered and pressed twice, all the parts can be bent into the curved surface along the same direction to meet the requirements of the appearance and the curved surface structure of the curved surface, and the connection of all the parts is more reliable in the pressing process.
Preferably, the curved cover plate is made of any one of sapphire, ceramic or glass, and before the reinforcing plate, the flexible circuit board and the chip are pressed into a curved surface state by the first concave-convex die in the step (2), the curved cover plate is pre-adhered to the chip in a planar state, so that the curved cover plate and the chip are well adhered by the first concave-convex die in the pressing process. The arrangement can ensure that the curved cover plate made of any one of sapphire, ceramic or glass can be reliably adhered to the chip.
Preferably, the curved cover plate is replaced by a coating, and after the reinforcing plate, the flexible circuit board and the chip are pressed into a curved surface state by the first concave-convex die in the step (2), the coating is coated on the chip in the curved surface state to form the curved cover plate. The arrangement is convenient for forming the curved cover plate.
Preferably, the first concave-convex mold comprises a first upper mold and a first lower mold, a first groove is formed in the center of the bottom of the first upper mold, the top surface of the first groove, the bottom surface of the first upper mold and the upper surface of the first lower mold are all curved surfaces, when the curved surface cover plate is made of any one of sapphire, ceramic or glass, the height of the first groove is matched with the sum of the height of the curved surface cover plate and the height of the chip, and when the curved surface cover plate is replaced by a coating, the height of the first groove is matched with the height of the chip. The first concave-convex mould has a simple structure, can conveniently and reliably press the chip, the flexible circuit board and the reinforcing plate into a curved surface shape, and ensures reliable connection of all layers.
Preferably, the second concave-convex mold comprises a second upper mold and a second lower mold, a second groove is formed in the center of the bottom of the second upper mold, the center of the top surface of the second groove and the upper surface of the second lower mold are set to be curved surfaces, and a first propping surface and a second propping surface for positioning the metal ring are respectively arranged on the edge of the top surface of the second groove and the bottom surface of the second upper mold. The second concave-convex mould has simple structure and can conveniently and reliably connect the metal ring with the flexible circuit board.
Description of the drawings:
FIG. 1 is a schematic diagram of a curved surface biometric module according to the present invention;
FIGS. 2 to 4 are schematic views illustrating a first embodiment of the present invention;
fig. 5 to 8 are schematic views illustrating a processing procedure according to a second embodiment of the present invention;
in the figure: the manufacturing method comprises the following steps of 1-cover plate, 2-chip, 3-flexible circuit board, 4-reinforcing plate, 5-metal ring, 6-first concave-convex mold, 7-second concave-convex mold, 8-first upper mold, 9-first lower mold, 10-first groove, 11-second upper mold, 12-second lower mold, 13-second groove, 14-first propping surface and 15-second propping surface.
Detailed Description
The invention will be further described with reference to the accompanying drawings, in conjunction with examples.
Embodiment one:
the utility model provides a curved surface biological identification module, includes apron 1, chip 2, flexible circuit board 3 and the stiffening plate 4 that from top to bottom set gradually, the periphery of apron 1 and chip 2 is equipped with metal ring 5, chip 2 is flexible chip, apron 1 is curved surface apron, the bottom surface of metal ring 5 is established to the curved surface, chip 2, flexible circuit board 3 and stiffening plate 4 are laminated together and are used for cooperating with the bottom surface of curved surface apron 1 and metal ring 5 along the same direction bending so that wholly form curved surface structure. The curved cover plate 1 is made of any one material of sapphire, ceramic or glass, the upper surface and the lower surface of the curved cover plate are curved and are bent along the same direction, the reinforcing plate 4 is made of a hard material and has the property of being bent, such as stainless steel, FR4 or PI, the function of reinforcing and supporting the flexible circuit board 3 and supplementing the thickness is achieved, the metal ring 5 is made of stainless steel or aluminum alloy materials, the upper surface and the lower surface of the chip 2, the upper surface and the lower surface of the flexible circuit board 3 and the upper surface and the lower surface of the reinforcing plate 4 are mutually attached together and are bent along the same direction, and the bending direction is matched with the bottom surfaces of the curved cover plate 1 and the metal ring 5.
The manufacturing method of the curved surface biological recognition module in the embodiment is as follows:
(1) Taking a reinforcing plate 4, a flexible circuit board 3 and a flexible chip 2 in a plane state, bonding the reinforcing plate 4 below the flexible circuit board 3, and welding the chip 2 above the flexible circuit board 3;
(2) The method comprises the steps that a curved cover plate 1 is pre-adhered to a chip 2 in a plane state, a reinforcing plate 4, a flexible circuit board 3 and the chip 2 are bent along the same direction through a first concave-convex die 6 to be matched with a curved metal ring 5 of the curved cover plate 1 and the bottom surface, the curved cover plate 1 and the chip 2 are well adhered in the pressing process of the first concave-convex die 6, the first concave-convex die 6 comprises a first upper die 8 and a first lower die 9, a first groove 10 is formed in the center of the bottom of the first upper die 8, the top surface of the first groove 10, the bottom surface of the first upper die 8 and the upper surface of the first lower die 9 are all set to be curved surfaces, the height of the first groove 10 is matched with the sum of the height of the curved cover plate 1 and the height of the chip 2, and when the upper surface of the flexible circuit board 3 and the lower surface of the reinforcing plate 4 are respectively bent and adhered to the bottom surface of the first upper die 8 and the upper surface of the first lower die 9, the top surface of the first groove 10 is tightly matched with the curved cover plate 1.
(3) Taking a metal ring 5 with a curved bottom surface, and pre-adhering the metal ring on the flexible circuit board 3;
(4) The metal ring 5 is pressed and adhered to the flexible circuit board 3 through the second concave-convex die 7, the second concave-convex die 7 comprises a second upper die 11 and a second lower die 12, a second groove 13 is formed in the center of the bottom of the second upper die 11, the center of the top surface of the second groove 13 and the upper surface of the second lower die 12 are set to be curved surfaces, a first propping surface 14 and a second propping surface 15 for positioning the metal ring 5 are respectively arranged on the edge of the top surface of the second groove 13 and the bottom surface of the second upper die 11, and when the upper surface of the flexible circuit board 3 and the lower surface of the reinforcing plate 4 are respectively and flexibly attached to the bottom surface of the metal ring 5 and the upper surface of the second lower die 12, the top surface of the second groove 13 is in close fit with the curved cover plate 1.
Embodiment two:
the curved surface biometric module in this embodiment is different from the curved surface biometric module in the first embodiment only in that: the curved cover plate 1 is replaced by a coating, for example a resin or ink coating.
The manufacturing method of the curved surface biological recognition module in this embodiment is different from the first embodiment only in the step (2), in the step (2) in this embodiment, after the stiffener 4, the flexible circuit board 3 and the chip 2 are pressed into a curved surface state by the first concave-convex mold 6, a coating is coated on the chip 2 in the curved surface state to form the curved surface cover plate 1, and the height of the first groove 10 of the first upper mold 8 is matched with the height of the chip 2, and the complete manufacturing method finally formed is as follows:
(1) Taking a reinforcing plate 4, a flexible circuit board 3 and a flexible chip 2 in a plane state, bonding the reinforcing plate 4 below the flexible circuit board 3, and welding the chip 2 above the flexible circuit board 3;
(2) The reinforcing plate 4, the flexible circuit board 3 and the chip 2 are bent in the same direction through the first concave-convex die 6 to be matched with the curved cover plate 1 and the metal ring 5 with the bottom surface being a curved surface, and the chip 2 in the curved surface state is coated with a coating to form the curved cover plate 1. The first concave-convex mold 6 comprises a first upper mold 8 and a first lower mold 9, a first groove 10 is formed in the center of the bottom of the first upper mold 8, the top surface of the first groove 10, the bottom surface of the first upper mold 8 and the upper surface of the first lower mold 9 are all set to be curved surfaces, the height of the first groove 10 is matched with the height of the chip 2, and when the upper surface of the flexible circuit board 3 and the lower surface of the reinforcing plate 4 are respectively and flexibly attached to the bottom surface of the first upper mold 8 and the upper surface of the first lower mold 9, the top surface of the first groove 10 is in tight fit with the chip 2.
(3) Taking a metal ring 5 with a curved bottom surface, and pre-adhering the metal ring on the flexible circuit board 3;
(4) The metal ring 5 is pressed and adhered to the flexible circuit board 3 through the second concave-convex die 7, the second concave-convex die 7 comprises a second upper die 11 and a second lower die 12, a second groove 13 is formed in the center of the bottom of the second upper die 11, the center of the top surface of the second groove 13 and the upper surface of the second lower die 12 are set to be curved surfaces, a first propping surface 14 and a second propping surface 15 for positioning the metal ring 5 are respectively arranged on the edge of the top surface of the second groove 13 and the bottom surface of the second upper die 11, and when the upper surface of the flexible circuit board 3 and the lower surface of the reinforcing plate 4 are respectively and flexibly attached to the bottom surface of the metal ring 5 and the upper surface of the second lower die 12, the top surface of the second groove 13 is in close fit with the curved cover plate 1.
Claims (5)
1. The utility model provides a manufacturing approach of curved surface biological identification module, curved surface biological identification module includes apron (1), chip (2), flexible circuit board (3) and stiffening plate (4) that from top to bottom set gradually, the periphery of apron (1) and chip (2) is equipped with metal ring (5), chip (2) are flexible chip, apron (1) is curved surface apron, the bottom surface of metal ring (5) is established to the curved surface, chip (2), flexible circuit board (3) and stiffening plate (4) are laminated together and are used for with curved surface apron (1) and the bottom surface of metal ring (5) match in order to make the whole curved surface structure that forms along the same direction each other, its characterized in that: it comprises the following steps:
the method comprises the steps of (1) taking a reinforcing plate (4), a flexible circuit board (3) and a flexible chip (2) in a plane state, bonding the reinforcing plate (4) below the flexible circuit board (3), and welding the chip (2) above the flexible circuit board (3);
(2) The reinforcing plate (4), the flexible circuit board (3) and the chip (2) are bent in the same direction through the first concave-convex die (6) to be matched with the curved cover plate (1) and the metal ring (5) with the curved bottom surface, and the curved cover plate (1) and the chip (2) are well adhered;
(3) Taking a metal ring (5) with a curved bottom surface, and pre-adhering the metal ring to the flexible circuit board (3);
(4) And the metal ring (5) is pressed and adhered on the flexible circuit board (3) through the second concave-convex die (7).
2. The method for manufacturing the curved surface biometric module according to claim 1, wherein:
the curved cover plate (1) is made of any one of sapphire, ceramic or glass, and before the reinforcing plate (4), the flexible circuit board (3) and the chip (2) are pressed into a curved surface state through the first concave-convex die (6) in the step (2), the curved cover plate (1) is pre-adhered to the chip (2) in a planar state, so that the curved cover plate (1) and the chip (2) are well adhered by the first concave-convex die (6) in the pressing process.
3. The method for manufacturing the curved surface biometric module according to claim 1, wherein:
the curved cover plate (1) is made of a coating, after the reinforcing plate (4), the flexible circuit board (3) and the chip (2) are pressed into a curved surface state through the first concave-convex die (6) in the step (2), the coating is coated on the chip (2) in the curved surface state to form the curved cover plate (1).
4. The method for manufacturing the curved surface biometric module according to claim 1, wherein:
the first concave-convex die (6) comprises a first upper die (8) and a first lower die (9), a first groove (10) is formed in the center of the bottom of the first upper die (8), the top surface of the first groove (10), the bottom surface of the first upper die (8) and the upper surface of the first lower die (9) are all designed to be curved surfaces, when the curved surface cover plate (1) is made of any one of sapphire, ceramic or glass, the height of the first groove (10) is matched with the sum of the height of the curved surface cover plate (1) and the height of the chip (2), and when the curved surface cover plate (1) is made of a coating, the height of the first groove (10) is matched with the height of the chip (2).
5. The method for manufacturing the curved surface biometric module according to claim 1, wherein:
the second concave-convex die (7) comprises a second upper die (11) and a second lower die (12), a second groove (13) is formed in the center of the bottom of the second upper die (11), the center of the top surface of the second groove (13) and the upper surface of the second lower die (12) are set to be curved surfaces, and the edge of the top surface of the second groove (13) and the bottom surface of the second upper die (11) are respectively provided with a first propping surface (14) and a second propping surface (15) for positioning the metal ring (5).
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CN107451579A (en) * | 2017-08-23 | 2017-12-08 | 江西合力泰科技有限公司 | A kind of bio-identification module for being embedded in panel and its production technology |
CN107949186A (en) * | 2017-12-01 | 2018-04-20 | 江西合力泰科技有限公司 | A kind of curved surface bio-identification module and its manufacture method |
CN108080894A (en) * | 2017-12-12 | 2018-05-29 | 东莞市精亿五金有限公司 | A kind of processing technology of circle fingerprint ring |
CN108080895A (en) * | 2017-12-12 | 2018-05-29 | 东莞市精亿五金有限公司 | A kind of processing technology of racetrack aluminium alloy fingerprint ring |
CN108108681A (en) * | 2017-12-14 | 2018-06-01 | 江西合力泰科技有限公司 | With high bio-identification module for resisting external force ability and preparation method thereof |
CN110032943B (en) * | 2019-03-18 | 2024-06-21 | 江西合力泰科技有限公司 | Biological recognition module and manufacturing method thereof |
CN114020192B (en) * | 2021-09-18 | 2024-04-02 | 特斯联科技集团有限公司 | Interaction method and system for realizing nonmetal plane based on curved surface capacitor |
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