CN106203403A - Fingerprint module and mobile terminal with same - Google Patents

Abstract

The invention discloses a fingerprint module and a mobile terminal with the same, wherein the fingerprint module comprises: a fingerprint identification component; the front side of the decoration is provided with an embedded groove, and the fingerprint identification component is embedded in the embedded groove; one end of the circuit board assembly extends into the embedded groove, the end part of the circuit board assembly is attached to the rear end face of the fingerprint identification assembly, and the other end of the circuit board assembly is provided with a grounding terminal; and the conductive piece is clamped between the end part of the circuit board assembly and the inner bottom wall of the embedded groove so as to electrically connect the decoration piece and the circuit board assembly. According to the fingerprint module, the aim of grounding the decorating part can be fulfilled, so that the phenomenon of static electricity generated on the decorating part can be avoided, the bad influence on the fingerprint module is avoided, and the working reliability of the fingerprint module is further ensured.

Description

Fingerprint module and mobile terminal with same

technical field

The invention relates to the technical field of electronic equipment, in particular to a fingerprint module and a mobile terminal with the same.

Background technique

In the related art, the decorative ring of the fingerprint module of the mobile terminal is a metal piece, and static electricity will be generated when the human hand touches the decorative ring or the decorative ring rubs, and the static electricity generated by the decorative ring will have a bad influence on the fingerprint module.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the present invention proposes a fingerprint module, which has the advantage of anti-static.

The present invention also proposes a mobile terminal, which includes the above-mentioned fingerprint module.

The fingerprint module according to the embodiment of the present invention includes: a fingerprint identification component; a decoration, the front side of the decoration has an embedded groove, and the fingerprint identification component is embedded in the embedded groove; a circuit board assembly, the circuit One end of the board assembly extends into the insertion groove, the end of the circuit board assembly is attached to the rear end surface of the fingerprint identification assembly, and the circuit board assembly is provided with a grounding terminal; and a conductive member, the The conductive member is sandwiched between the end of the circuit board assembly and the inner bottom wall of the insertion groove so that the decorative member is electrically connected to the ground terminal through the circuit board assembly.

According to the fingerprint module of the embodiment of the present invention, one end of the circuit board assembly is inserted into the embedding groove, and a grounding terminal is provided on the circuit board assembly, and between the end of the circuit board assembly and the inner bottom wall of the embedding groove Conductive parts are arranged between the decorative parts to electrically connect the decorative parts to the ground terminal through the circuit board assembly, which can achieve the purpose of grounding the decorative parts, so as to avoid the phenomenon of static electricity on the decorative parts and avoid adverse effects on the fingerprint module, thereby ensuring the fingerprint module. Reliability of group work.

According to some embodiments of the present invention, an installation groove is provided on the inner bottom wall of the insertion groove, and the conductive member is embedded in the installation groove.

According to some embodiments of the present invention, the conductive member is conductive foam.

According to some embodiments of the present invention, the circuit board assembly includes: a flexible circuit board, one end of the flexible circuit board protrudes into the insertion groove, and the end of the flexible circuit board is connected to the fingerprint identification component The rear end surface of the flexible circuit board is bonded, the ground terminal is arranged on the flexible circuit board; and the reinforcing plate is bonded to the flexible circuit board and electrically connected to the flexible circuit board, and the The reinforcement board is located on a side of the flexible circuit board away from the fingerprint identification component, and the conductive member is electrically connected to the reinforcement board.

According to some embodiments of the present invention, a seal is sheathed on the outer peripheral wall of the decoration.

In some embodiments of the present invention, a sealing groove is formed on the outer peripheral wall of the decoration member, and the sealing member is embedded in the sealing groove.

In some embodiments of the present invention, it further includes: a cover plate, the cover plate is embedded in the embedding groove and is located at the front side of the fingerprint identification assembly.

In some embodiments of the present invention, the cover plate is a glass cover plate or a ceramic cover plate.

A mobile terminal according to an embodiment of the present invention includes the above-mentioned fingerprint module.

According to the mobile terminal of the embodiment of the present invention, one end of the circuit board assembly is inserted into the insertion groove, and a grounding terminal is provided on the circuit board assembly, and between the end of the circuit board assembly and the inner bottom wall of the insertion groove The purpose of grounding the decorative part can be achieved by setting the conductive part so that the decorative part is electrically connected to the ground terminal through the circuit board assembly, so as to avoid the phenomenon of static electricity on the decorative part to avoid adverse effects on the fingerprint module, thereby ensuring that the fingerprint module work reliability.

Description of drawings

Fig. 1 is a schematic structural diagram of a fingerprint module according to an embodiment of the present invention;

Fig. 2 is an exploded diagram of a fingerprint module according to an embodiment of the present invention;

Fig. 3 is an exploded view of a fingerprint module according to an embodiment of the present invention;

Fig. 4 is a cross-sectional view of a fingerprint module according to an embodiment of the present invention.

Reference signs:

fingerprint module 100,

Encapsulation layer 1, raised portion 11,

Decorative part 2, embedding groove 21, recessed part 22, via hole 23, installation groove 24, sealing groove 25,

circuit board assembly 3, flexible circuit board 31, reinforcement board 32,

Conductive element 4, cover plate 5, fingerprint pressing plate 6, sealing element 7.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "transverse", "thickness", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", "axial", "radial", and "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The following describes a fingerprint module 100 according to an embodiment of the present invention with reference to FIGS. 1-4 .

As shown in FIGS. 1-4 , the fingerprint module 100 according to the embodiment of the present invention includes: a fingerprint identification component, a decorative part 2 , a circuit board component 3 and a conductive part 4 .

Specifically, the front side of the decorative part 2 has an embedding groove 21, and the fingerprint recognition component is embedded in the embedding groove 21, thereby making the appearance of the fingerprint recognition component more exquisite. One end of the circuit board assembly 3 extends into the insertion groove 21, and the end of the circuit board assembly 3 is attached to the rear end surface of the fingerprint identification assembly to ensure the tight connection between the fingerprint identification assembly and the circuit board assembly 3. A grounding terminal is provided, and the conductive member 4 is sandwiched between the end of the circuit board assembly 3 and the inner bottom wall of the insertion groove 21 to electrically connect the decoration 2 to the grounding terminal through the circuit board assembly 3 . After the decorative part 2 is electrically connected to the ground terminal through the circuit board assembly 3, the purpose of grounding the decorative part 2 can be realized, and the phenomenon of static electricity in the decorative part 2 can be avoided, thereby avoiding adverse effects on the fingerprint module 100 and ensuring fingerprint The reliability of the operation of the module 100.

According to the fingerprint module 100 of the embodiment of the present invention, one end of the circuit board assembly 3 is inserted into the insertion groove 21, and a ground terminal is provided on the circuit board assembly 3, and the end of the circuit board assembly 3 and the insertion groove Conductive member 4 is provided between the inner bottom wall of 21 so that the decorative part 2 is electrically connected to the ground terminal through the circuit board assembly 3, and the purpose of grounding the decorative part 2 can be realized, so that the phenomenon of static electricity on the decorative part 2 can be avoided to avoid fingerprints The module 100 produces adverse effects, thereby ensuring the reliability of the fingerprint module 100 .

In some embodiments of the present invention, as shown in FIG. 2 and FIG. 4 , an installation groove 24 is provided on the inner bottom wall of the insertion groove 21 , and the conductive member 4 is embedded in the installation groove 24 . The installation groove 24 can play a position-limiting effect on the conductive member 4, preventing the conductive member 4 from moving on the bottom wall of the embedded groove 21, thereby ensuring that the conductive member 4 and the inner bottom wall of the embedded groove 21 and the conductive member 4 and the circuit board Reliability of connections between components 3.

Specifically, the conductive member 4 is conductive foam. Conductive foam is a conductive cloth wrapped on a flame-retardant sponge. After a series of treatments, it has good surface conductivity and can be easily fixed on the device to be shielded with adhesive tape. The cost of using conductive foam is low, the processing technology is simple, and the reliability of grounding can be guaranteed at the same time. When the circuit board assembly 3 and the decorative part 2 are assembled, the conductive foam between the circuit board assembly 3 and the decorative part 2 has a certain amount of compression, which can ensure that between the conductive foam and the decorative part 2 and between the conductive foam and the decorative part 2 The reliable connection between the circuit board components 3 ensures a good grounding of the decorative part 2 and prevents the static electricity of the decorative part 2 from adversely affecting the fingerprint module 100 .

In some embodiments of the present invention, as shown in FIGS. 2-4 , the circuit board assembly 3 includes a flexible circuit board 31 and a reinforcing board 32 . One end of the flexible circuit board 31 extends into the insertion groove 21, and the end of the flexible circuit board 31 is attached to the rear end surface (rear end as shown in FIG. 4 ) of the fingerprint recognition component, thereby ensuring that the fingerprint recognition component is compatible with the The tight connection between the flexible circuit boards 31 ensures the reliability of the fingerprint module 100 . The ground terminal is arranged on the flexible circuit board 31, the reinforcing board 32 is attached to the flexible circuit board 31 and electrically connected with the flexible circuit board 31, and the reinforcing board 32 is located on the side of the flexible circuit board 31 away from the fingerprint recognition component, The conductive member 4 is electrically connected to the reinforcing plate 32 (that is, the reinforcing plate 32 is a conductive component). The reinforcement board 32 can enhance the structural strength of the flexible circuit board 31, prevent the flexible circuit board 31 from bending, etc., thereby ensuring the reliability of the operation of the flexible circuit board 31, and at the same time, the reinforcement board 32 and the flexible circuit board 31 can be electrically connected, The conductive part 4 is electrically connected to the reinforcing plate 32 to realize the electrical connection between the decorative part 2 and the flexible circuit board 31, so that the electrical connection between the decorative part 2 and the ground terminal through the flexible circuit board 31 can be realized, and then the grounding of the decorative part 2 can be realized. effect, so as to avoid the negative influence of the static electricity of the decoration part 2 on the fingerprint module 100 .

In some embodiments of the present invention, as shown in FIG. 4 , a sealing member 7 is sleeved on the outer peripheral wall of the decoration member 2 . When the fingerprint module 100 is installed on a mobile terminal such as a mobile phone, it can prevent sweat or other liquids from intruding into the mobile terminal and damaging components inside the mobile terminal, thereby ensuring the reliability of the mobile terminal.

Further, as shown in FIG. 4 , a sealing groove 25 is provided on the outer peripheral wall of the decoration part 2 , and the sealing part 7 is embedded in the sealing groove 25 . Therefore, it is possible to prevent the sealing member 7 from moving along the axial direction of the decorative member 2 (the front-rear direction as shown in FIG. 4 ), thereby ensuring the reliability of the sealing.

In some embodiments of the present invention, as shown in FIGS. 2-4 , the fingerprint module 100 also includes a cover plate 5, which is arranged in the insertion groove 21 and is located on the front side of the fingerprint recognition component (as shown in FIG. 4 ). front side shown). On the one hand, the cover plate 5 can further protect the fingerprint recognition component and the circuit board component 3 , and on the other hand, the cover plate 5 can also increase the aesthetics of the fingerprint module 100 .

Optionally, the cover plate 5 can be a glass cover plate 5 or a ceramic cover plate 5 , the glass cover plate 5 or the ceramic cover plate 5 has high gloss, which can improve the aesthetics of the fingerprint module 100 .

In some embodiments of the present invention, the fingerprint identification assembly includes an encapsulation layer 1, the rear wall surface of the encapsulation layer 1 (rear side as shown in FIG. 1 is embedded in the embedding groove 21, and the embedding groove 21 is provided with a second fitting part, and the first fitting and the second fitting are fitted to each other. Thus, when the encapsulation layer 1 is embedded in the embedding groove 21, and the first mating portion and the second mating portion are engaged with each other, it is possible to reduce the mating of the encapsulation layer 1 and the decorative part 2 along the front and rear directions (as shown in FIG. 4 ). The thickness of the fingerprint module 100 can be reduced, thereby adapting to the ultra-thin design of the mobile terminal and meeting the needs of users.

As shown in FIGS. 2-4 , the first mating portion is the raised portion 11 formed on the rear wall surface of the encapsulation layer 1 (rear as shown in FIG. 4 ), and the second mating portion is formed in the embedding groove 21. In the recessed portion 22 , at least part of the raised portion 11 is located in the recessed portion 22 . Therefore, when assembling the encapsulation layer 1 and the decorative part 2, at least part of the raised part 11 is embedded in the recessed part 22, the thickness of the decorative part 2 and the encapsulation layer 1 along the front and rear direction can be reduced after assembly, thereby reducing the The thickness of the small fingerprint module 100 can further adapt to the ultra-thin design of the mobile terminal and meet the needs of users.

For example, in the example shown in FIG. 3 and FIG. 4 , the rear wall surface of the encapsulation layer 1 has a first fitting portion, the first fitting portion is formed as a raised portion 11, the decorative part 2 has an embedding groove 21, and the encapsulation layer 1 is arranged on Embedding in the groove 21, the bottom wall of the embedding groove 21 is provided with a second matching portion, the second matching portion is formed as a concave portion 22, the convex portion 11 is located in the concave portion 22, the side wall surface of the convex portion 11 is in contact with the surface of the packaging layer 1 The rear wall surface forms a first stepped surface, the bottom wall of the insertion groove 21 and the side wall of the recessed part 22 form a second stepped surface, and the first stepped surface and the second stepped surface are engaged, thereby limiting the direction of the packaging layer 1 in the backward direction. Displacement, so as to ensure the reliability of the fingerprint module 100 work. And when the thickness of the protruding portion 11 along the front-back direction is a, the overall thickness of the fingerprint module 100 can be reduced by a.

Specifically, as shown in FIG. 3 , there is one raised portion 11 . Thus, the structure and processing technology of the encapsulation layer 1 can be simplified, the production cycle can be saved, and the production cost can be reduced. For example, in the example shown in FIG. 3 , the rear wall surface of the encapsulation layer 1 is provided with a raised portion 11, and the raised portion 11 is one and is located at the center of the encapsulation layer 1. When processing the encapsulation layer 1, it can be processed first. The encapsulation layer 1 with uniform thickness is then processed with a circle of steps along the circumferential direction on the rear wall of the encapsulation layer 1 .

The following describes a fingerprint module 100 according to a specific embodiment of the present invention with reference to FIGS. 1-4 . The following description is only exemplary and intended to explain the present invention, but should not be construed as a limitation of the present invention.

As shown in FIGS. 1-4 , a fingerprint module 100 according to an embodiment of the present invention includes a fingerprint recognition component, a decorative component 2 , a circuit board component 3 , a conductive component 4 and a cover plate 5 .

Specifically, as shown in Fig. 3 and Fig. 4, the fingerprint identification assembly includes an encapsulation layer 1, and a first matching portion is provided on the rear wall surface of the encapsulation layer 1, and the first mating portion is a protrusion formed on the rear wall surface of the encapsulation layer 1 part 11, the raised part 11 is one and is located in the middle of the encapsulation layer 1, when the raised part 11 is processed, a circle of steps can be processed along the circumferential direction of the encapsulation layer 1, the encapsulation layer 1 and the rear wall surface and the raised part The side wall surface of 11 forms a first stepped surface. As shown in Fig. 2 and Fig. 4, the decorative part 2 has an embedding groove 21, the encapsulation layer 1 is arranged in the embedding groove 21, and a second fitting part is arranged in the embedding groove 21, and the second fitting part is formed in the embedding groove 21. The concave portion 22 , the protruding portion 11 is located in the concave portion 22 . The bottom wall of the insertion groove 21 and the side wall of the recessed portion 22 form a second stepped surface, and the first stepped surface engages with the second stepped surface. After the decoration part 2 and the encapsulation layer 1 are assembled, the thicknesses of the decoration part 2 and the encapsulation layer 1 in the front and back direction can be reduced, thereby reducing the thickness of the fingerprint module 100, which can further meet the requirements of ultra-thin mobile terminals.

It should be noted that when the thickness of the protruding portion 11 along the front-rear direction is a, the thickness of the decorative part 2 and the encapsulation layer 1 after assembly can be reduced by a in the front-rear direction. For example, when the thickness of the protruding portion 11 along the front-rear direction is 0.2 mm, the thickness of the decorative part 2 and the encapsulation layer 1 can be reduced by 0.2 mm in the front-rear direction after being assembled.

As shown in Figures 2-4, the circuit board assembly 3 includes a flexible circuit board 31 and a reinforcement board 32, and a via hole 23 is provided on the bottom wall of the recessed part 22 of the decorative part 2, through which one end of the flexible circuit board 31 passes. The hole 23 protrudes into the recessed portion 22 , and the end of the flexible circuit board 31 protruding into the recessed portion 22 is attached to the free end surface of the raised portion 11 (ie, the rear wall of the raised portion 11 ). On the one hand, the encapsulation layer 1 can protect the flexible circuit board 31, and can prevent impurities in the air from corroding the circuit and causing electrical performance degradation; The tight connection of the flexible circuit board 31 ensures the reliability of the fingerprint module 100 . The reinforcing plate 32 can be a reinforcing steel plate, and the reinforcing plate 32 is attached to the side of the flexible circuit board 31 away from the packaging layer 1 and is electrically connected to the flexible circuit board 31, that is, the reinforcing plate 32 is attached to the flexible circuit board 31 on the rear wall. The reinforcing plate 32 can strengthen the structural strength of the flexible circuit board 31 and prevent the flexible circuit board 31 from being bent and damaged.

In addition, as shown in Figures 2-4, the decorative part 2 is a conductive metal part, the other end of the flexible circuit board 31 (the end that does not extend into the recessed part 22) is provided with a grounding terminal, and the reinforcing plate 32 and the recessed part 22 A conductive piece 4 is provided between the inner bottom wall of the hood, and the decorative piece 2 is electrically connected to the ground terminal through the conductive piece 4, the reinforcing plate 32 and the flexible circuit board 31, so as to realize the purpose of grounding the decorative piece 2 and prevent the static electricity of the decorative piece 2. produce adverse effects on the fingerprint module 100 . Wherein, the conductive member 4 is conductive foam, the shape of the cross-section of the conductive foam is rectangular, and the bottom wall of the recess 22 is provided with a mounting groove 24 with a rectangular cross-section, and the conductive foam is embedded in the mounting groove 24, Thus, the conductive foam can be prevented from moving, thereby ensuring the reliability of the electrical connection between the decorative part 2 and the flexible circuit board 31 .

As shown in FIG. 4 , the cover plate 5 is a glass cover plate 5 . The cover plate 5 is disposed in the embedding groove 21 and is located on the front side of the encapsulation layer 1 . The cover plate 5 can block the front opening of the embedding groove 21 . The cover plate 5 can not only further protect the circuit board assembly 3 , but also increase the aesthetics of the fingerprint module 100 .

As shown in Figure 4, the outer peripheral wall of the decorative part 2 is covered with a sealing member 7, and the sealing member 7 is embedded in the sealing groove 25 on the outer peripheral wall of the decorative part 2. When the fingerprint module 100 is installed on a mobile terminal such as a mobile phone, During this time, sweat or other liquids on hands can be prevented from intruding into the interior of the mobile terminal and damaging components inside the mobile terminal, thereby ensuring the reliability of the operation of the mobile terminal.

As shown in FIGS. 2-4 , the fingerprint module 100 also includes a fingerprint pressing plate 6 , which is arranged on the rear side of the decorative part 2 .

In the process of processing the fingerprint module 100, the cover plate 5, the packaging layer 1, the flexible circuit board 31 and the reinforcing plate 32 can be processed together, and then the conductive foam is pasted into the installation groove 24 of the decorative part 2, and the The processed cover plate 5 , encapsulation layer 1 , flexible circuit board 31 and reinforcing plate 32 are assembled together with the processed decorative part 2 by dispensing around a circle of glue and maintained under pressure. At the same time, through dispensing assembly, the conductive foam between the reinforcing plate 32 and the decorative part 2 passes a certain amount of compression, and after dispensing and maintaining pressure for a certain period of time, the glue is cured to ensure good grounding between the two.

A mobile terminal according to an embodiment of the present invention includes the above-mentioned fingerprint module 100 .

According to the mobile terminal of the embodiment of the present invention, one end of the circuit board assembly 3 is inserted into the insertion groove 21, and a ground terminal is provided on the circuit board assembly 3, and the end of the circuit board assembly 3 and the insertion groove 21 A conductive member 4 is arranged between the inner bottom wall to electrically connect the decorative part 2 to the ground terminal through the circuit board assembly 3, so as to achieve the purpose of grounding the decorative part 2, thereby avoiding static electricity on the decorative part 2 and avoiding damage to the fingerprint module. 100 produces adverse effects, thereby ensuring the reliability of the work of the fingerprint module 100 and the work of the mobile terminal.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (9)

1. a fingerprint module, it is characterised in that including:

Fingerprint recognition assembly；

Decoration, has embedded groove on front side of described decoration, described fingerprint recognition assembly is embedded in described embedded groove；

Circuit board assemblies, one end of described circuit board assemblies stretches in described embedded groove, the end patch of described circuit board assemblies Being located on the rear end face of described fingerprint recognition assembly, described circuit board assemblies is provided with ground terminal；With

Electric-conductor, described electric-conductor is folded between the end of described circuit board assemblies and the interior diapire of described embedded groove so that institute State decoration to be electrically connected with described ground terminal by described circuit board assemblies.

Fingerprint module the most according to claim 1, it is characterised in that the interior diapire of described embedded groove is provided with mounting groove, Described electric-conductor is embedded in described mounting groove.

Fingerprint module the most according to claim 1, it is characterised in that described electric-conductor is conducting foam.

Fingerprint module the most according to claim 1, it is characterised in that described circuit board assemblies includes:

Flexible PCB, one end of described flexible PCB stretches in described embedded groove, and the end of described flexible PCB Fitting with the rear end face of described fingerprint recognition assembly, described ground terminal is located on described flexible PCB；With

Stiffening plate, described stiffening plate is fitted on described flexible PCB and electrically connects with described flexible PCB, and described benefit Strong plate is positioned at the side away from described fingerprint recognition assembly of described flexible PCB, and described electric-conductor is electrically connected with described stiffening plate Connect.

Fingerprint module the most according to claim 1, it is characterised in that be cased with sealing member on the periphery wall of described decoration.

Fingerprint module the most according to claim 5, it is characterised in that seal groove on the periphery wall of described decoration, described Sealing member is embedded in described seal groove.

7. according to the fingerprint module according to any one of claim 1-6, it is characterised in that also include:

Cover plate, described cover plate is embedded in described embedded groove and is positioned on front side of described fingerprint recognition assembly.

Fingerprint module the most according to claim 7, it is characterised in that described cover plate is glass cover-plate or ceramic cover plate.

9. a mobile terminal, it is characterised in that include according to the fingerprint module according to any one of claim 1-8.