CN105844237B - Fingerprint sensing assembly for terminal and terminal with fingerprint sensing assembly - Google Patents

Abstract

The invention discloses a fingerprint sensing assembly for a terminal and the terminal with the same, wherein the fingerprint sensing assembly comprises: ornamental ring, fingerprint chip and sealed glue, the mounting hole is injectd to the inner circle of ornamental ring, has first ring channel on the ornamental ring, and the fingerprint chip assembly has the second ring channel on the fingerprint chip in the mounting hole, and the annular groove is glued in order injecteing jointly with first ring channel intercommunication to the second ring channel, and sealed glue is filled in the annular is glued the inslot and is in order to seal the annular gap between mounting hole and the fingerprint chip. According to the fingerprint sensing assembly for the terminal, disclosed by the invention, liquid can be prevented from entering the inner side of the fingerprint chip from the annular gap between the mounting hole and the fingerprint chip, so that the problem that a welding pin of the fingerprint chip is corroded by the liquid and short-circuit failure is caused is solved, and the waterproof effect is realized by arranging the annular glue groove for dispensing, so that the processing and assembling difficulty of the decoration ring and the fingerprint chip can be effectively reduced, and the structure of the fingerprint sensing assembly is more compact and exquisite.

Description

Fingerprint sensing component for terminal and terminal having same

technical field

The invention relates to the field of communication equipment, in particular to a fingerprint sensing component for a terminal and a terminal with the same.

Background technique

More and more mobile terminals have been equipped with fingerprint sensing components. The fingerprint sensing component is usually composed of a metal decorative ring and a fingerprint chip. After the decorative ring and the fingerprint chip are assembled together, there will be a gap of 0.05mm between the decorative ring and the fingerprint chip. With a fitting gap of 0.2mm, during the normal use of the mobile phone terminal, liquids such as water or sweat will enter the interior of the fingerprint sensor component along the fitting gap, corroding the solder pins of the fingerprint chip, causing the fingerprint chip to short circuit or fail, and the matching gap It affects the overall aesthetics of the mobile terminal, and there are often problems such as dust accumulation and easy dirt.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a fingerprint sensing component for a terminal, the fingerprint sensing component has good waterproof effect and high working reliability.

The present invention also proposes a terminal having the above-mentioned fingerprint sensing component.

The fingerprint sensing assembly for a terminal according to the first aspect of the present invention includes: a decoration ring, the inner circle of the decoration ring defines a mounting hole, and the end surface of the decoration ring adjacent to the interior of the terminal has a first An annular groove, the inner peripheral wall of the first annular groove is open toward the installation hole; a fingerprint chip, the fingerprint chip is assembled in the installation hole, and the end surface of the fingerprint chip adjacent to the interior of the terminal There is a second annular groove, the outer peripheral wall of the second annular groove is open toward the installation hole and communicated with the first annular groove to jointly define an annular glue groove; and a sealant, the sealant is filled in the The annular glue groove is used to seal the annular gap between the installation hole and the fingerprint chip.

According to the fingerprint sensing component for terminals of the present invention, liquid can be prevented from entering the inner side of the fingerprint chip from the annular gap between the mounting hole and the fingerprint chip, thereby preventing the short-circuit failure of the solder leg of the fingerprint chip from being corroded by the liquid, and Waterproofing by dispensing glue in an annular glue tank can effectively reduce the difficulty of processing and assembling the decoration ring and the fingerprint chip, making the structure of the fingerprint sensing component more compact and delicate.

In some embodiments, the second annular groove is formed by indenting an outer peripheral edge of an end surface of the fingerprint chip on a side adjacent to the interior of the terminal toward a direction away from the terminal.

In some embodiments, the first annular groove is formed by indenting an inner peripheral edge of the decorative ring on a side end surface adjacent to the interior of the terminal in a direction away from the terminal.

In some embodiments, the bottom wall of the second annular groove is flush with the bottom wall of the first annular groove.

In some embodiments, the section of the annular glue tank is rectangular or trapezoidal.

In some embodiments, the section of the annular glue groove is triangular, semicircular or semielliptical.

In some embodiments, along the extending direction of the annular glue groove, the section of the annular glue groove is the same everywhere.

In some embodiments, the cross-sectional area of the mounting hole gradually increases along the direction from the outside of the terminal to the inside of the terminal on the axis of the mounting hole.

The terminal according to the second aspect of the present invention includes the fingerprint sensing component for the terminal according to the first aspect of the present invention; and a main board, the main board is arranged on one side of the fingerprint sensing component and connected to the fingerprint chip .

According to the terminal of the present invention, the overall performance of the terminal is improved by setting the fingerprint sensing component for the terminal according to the first aspect above.

In some embodiments, the terminal is a mobile terminal.

In some embodiments, the mobile terminal is a mobile phone, a tablet computer or a vehicle-mounted computer.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is an exploded diagram of a fingerprint sensor assembly and a motherboard according to an embodiment of the present invention;

Fig. 2 is an assembly diagram of a fingerprint sensing component and a main board according to an embodiment of the present invention;

FIG. 3 is a partially enlarged view of FIG. 2 .

Reference signs:

1: decorative ring; 1A: inner peripheral edge; 11: first annular groove; 11A: bottom wall of the first annular groove; 12: installation hole;

2: fingerprint chip; 2A: peripheral edge; 21: second annular groove; 21A: bottom wall of the second annular groove;

3: sealant; 4: main board; B: annular gap.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. 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.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, various specific process and material examples are provided herein, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

A fingerprint sensing component for a terminal according to an embodiment of the first aspect of the present invention will be described below with reference to FIGS. 1-3 .

As shown in FIG. 2 , the fingerprint sensor assembly for a terminal according to the embodiment of the first aspect of the present invention includes: a decoration ring 1 , a fingerprint chip 2 and a sealant 3 .

Specifically, as shown in FIG. 1, the inner ring of the decorative ring 1 defines a mounting hole 12, and the end surface of the decorative ring 1 adjacent to the interior of the terminal (such as the inner end surface shown in FIG. 2) has a first annular groove 11. , the inner peripheral wall of the first annular groove 11 (that is, the peripheral wall adjacent to the central axis of the first annular groove 11) is open toward the mounting hole 12, in other words, the first annular groove 11 does not have an inner peripheral wall, and the fingerprint chip 2 is assembled in the mounting hole 12, The fingerprint chip 2 has a second annular groove 21 on one side end surface adjacent to the interior of the terminal (for example, the inner end surface shown in FIG. ) is open toward the mounting hole 12, in other words, the second annular groove 21 does not have an outer peripheral wall, and the second annular groove 21 communicates with the first annular groove 11 to jointly define an annular glue groove.

2 and 3, the sealant 3 is filled in the annular groove to seal the annular gap B between the installation hole 12 and the fingerprint chip 2, that is to say, the sealant 3 (such as ordinary glue or curing glue, etc.) Point in the annular rubber groove, and ensure that the sealant 3 is filled in the circumferential direction of the annular rubber groove, so as to at least seal the inner end of the annular gap B between the mounting hole 12 and the fingerprint chip 2 (the end adjacent to the inside of the terminal), As a result, the liquid located on the side of the fingerprint chip 2 away from the interior of the terminal (that is, the outside of the fingerprint chip 2 ) cannot flow along the annular gap B between the mounting hole 12 and the fingerprint chip 2 under the blocking effect of the sealant 3 . The inner side of the fingerprint chip 2, so as to avoid the problem that the liquid corrodes the solder pins at the inner end of the fingerprint chip 2, resulting in short circuit failure of the solder pins, thereby ensuring that the fingerprint chip 2 can work reliably.

According to the fingerprint sensor assembly for the terminal according to the embodiment of the present invention, the first annular groove 11 and the second annular groove 21 are respectively processed on the decorative ring 1 and the fingerprint chip 2 to reserve an annular glue groove for dispensing , so that the sealant 3 can be placed in the annular rubber groove to seal, thereby preventing the liquid from entering the inner side of the fingerprint chip 2, preventing the liquid from corroding the solder feet on the inner side of the fingerprint chip 2 and causing the fingerprint chip 2 to fail, and achieving the ultimate goal of protecting the fingerprint chip 2 . In addition, by setting the annular glue groove and cooperating with glue dispensing to play the role of sealing and waterproofing, the difficulty of processing and assembling the decoration ring 1 and the fingerprint chip 2 can be effectively reduced, and the structural complexity and production cost of the fingerprint sensing component can be reduced. This makes the structure of the fingerprint sensing component more compact and delicate.

In one embodiment of the present invention, on the central axis of the mounting hole 12, along the direction from the outside of the terminal to the inside of the terminal, the cross-sectional area of the mounting hole 12 gradually increases (not shown in the figure), and the fingerprint chip 2 is formed into a shape that matches the shape of the mounting hole 12 and is assembled in the mounting hole 12, so that the decorative ring 1 and the fingerprint chip 2 can be assembled with zero gap, thereby further improving the waterproof effect of the fingerprint sensing component and improving the fingerprint sensor. Reliability of sensing component work.

In one embodiment of the present invention, referring to Fig. 1 and Fig. 3, the second annular groove 21 is formed by the outer peripheral edge 2A (i.e. The edge away from the central axis of the second annular groove 21 is concavely formed toward the direction away from the terminal (ie, the outer side shown in FIG. 1 ). That is to say, the second annular groove 21 is formed by the outer peripheral edge 2A of the inner end of the fingerprint chip 2 being recessed outward. Therefore, the second annular groove 21 is convenient for processing and dispensing, and the sealing reliability of dispensing is higher.

Further, referring to FIG. 1 and FIG. 3 , the first annular groove 11 is formed by the inner peripheral edge 1A (that is, adjacent to the first annular groove) of the decorative ring 1 on the side end surface adjacent to the interior of the terminal (ie, the inner end surface shown in FIG. 1 ). 11) is concavely formed toward the direction away from the terminal (ie, the outer side shown in FIG. 1 ). That is to say, the first annular groove 11 is formed by the inner peripheral edge 1A of the inner end of the decoration ring 1 being recessed outward. Therefore, the first annular groove 11 is convenient to process, and the communication between the first annular groove 11 and the second annular groove 21 is more reliable, which is more convenient for dispensing, and the sealing reliability of dispensing is higher.

Preferably, referring to FIG. 3 , the bottom wall 21A of the second annular groove 21 (the side wall farther from the interior of the terminal) is flush with the bottom wall 11A of the first annular groove 11 (the side wall farther away from the interior of the terminal). As a result, the dispensing effect is better and the waterproof reliability is higher. Further, referring to FIG. 3 , the section of the annular glue tank can be rectangular or trapezoidal. Therefore, the first annular groove 11 and the second annular groove 21 are more convenient to process and produce, and have better sealing reliability. In some other embodiments of the present invention, the section of the annular glue tank can also be formed in a triangle, semicircle, or semiellipse, etc. Therefore, processing is also convenient and the sealant 3 can be saved, thereby reducing production costs. Here, it should be noted that the section refers to the section obtained by cutting the annular rubber groove along the radial direction of the annular rubber groove. In some embodiments of the present invention, along the extension direction of the annular glue groove, that is, along the circumferential direction of the annular glue groove, the shape and size of the section of the annular glue groove are all the same everywhere, thus, the sealing effect is better, and the annular glue Grooves are easier to machine.

The terminal according to the embodiment of the second aspect of the present invention is described below. Wherein, the terminal may be a fixed terminal or a mobile terminal, wherein the fixed terminal may be a desktop computer, and the mobile terminal may be a mobile phone, a tablet computer, or a vehicle-mounted computer. In the following, only a mobile phone is used as an example for illustration. After reading the technical solution below, those skilled in the art can obviously understand the technical solution that the terminal is other devices.

The terminal according to the embodiment of the second aspect of the present invention includes: a main board 33 and the fingerprint sensor assembly for the terminal according to the above-mentioned embodiment of the first aspect of the present invention, the main board 33 is arranged on one side of the fingerprint sensor assembly (for example, FIG. 2 The inner side shown in , that is, the side of the fingerprint sensing component adjacent to the interior of the terminal) and is connected (for example, electrically connected) to the fingerprint chip 22 . Thus, the fingerprint sensing component can enable the terminal to have functions such as fingerprint recognition. It can be understood that the concept of the main board 33 of the terminal should be well known to those skilled in the art, and will not be described in detail here.

In a preferred embodiment of the present invention, the terminal such as a mobile phone can also include a casing, the main board 33 can be installed in the casing, and the fingerprint sensor assembly can be installed under the screen on the front surface of the casing, or installed on the bottom of the casing. The upper middle part of the side surface and other positions, thereby facilitating the operation and making the overall appearance of the mobile phone beautiful. Other configurations and operations of the terminal according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

According to the terminal of the embodiment of the present invention, by setting the fingerprint sensing component of the embodiment of the first aspect, the overall appearance and waterproof reliability of the terminal are improved.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "inner", "outer", "axial", "radial", and "circumferential" are based on the orientations shown in the drawings Or positional relationship is only for the convenience of describing the present invention and simplifying the description, but 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 therefore should not be construed as limiting the present invention.

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 ; It can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

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, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (7)

1. A fingerprint sensor assembly for a terminal, characterized in that it comprises: a decoration ring, the inner circle of the decoration ring defines a mounting hole, the cross-sectional area of the mounting hole gradually increases along the axis of the mounting hole along the direction from the outside of the terminal to the inside of the terminal Large, the inner periphery of the end face of the decorative ring adjacent to the interior of the terminal is recessed toward the direction away from the terminal to form a first annular groove, and the inner peripheral wall of the first annular groove is open toward the installation hole ; A fingerprint chip, the fingerprint chip is formed into a shape that matches the shape of the mounting hole and is assembled in the mounting hole, and the outer peripheral edge of the end face of the fingerprint chip that is adjacent to the interior of the terminal faces away from the The direction of the terminal is recessed to form a second annular groove, the bottom wall of the second annular groove is flush with the bottom wall of the first annular groove, and the outer peripheral wall of the second annular groove is open toward the mounting hole and is in line with the mounting hole. The first annular groove communicates to jointly define an annular glue groove; and Sealant, the sealant is filled in the annular glue groove to seal the annular gap between the installation hole and the fingerprint chip. 2. The fingerprint sensor assembly for a terminal according to claim 1, wherein the section of the annular glue groove is rectangular or trapezoidal. 3. The fingerprint sensor assembly for a terminal according to claim 1, wherein the section of the annular glue groove is triangular, semicircular or semielliptical. 4 . The fingerprint sensor assembly for a terminal according to claim 1 , wherein along the extending direction of the annular glue groove, the section of the annular glue groove is the same everywhere. 5. A terminal, characterized in that, comprising: The fingerprint sensing component for a terminal according to any one of claims 1-4; and A main board, the main board is arranged on one side of the fingerprint sensing component and connected with the fingerprint chip. 6. The terminal according to claim 5, wherein the terminal is a mobile terminal. 7. The terminal according to claim 6, wherein the mobile terminal is a mobile phone, a tablet computer or a vehicle-mounted computer.