WO2021008389A1

WO2021008389A1 - Terminal device

Info

Publication number: WO2021008389A1
Application number: PCT/CN2020/100179
Authority: WO
Inventors: 杨子东; 王建峰
Original assignee: 维沃移动通信有限公司
Priority date: 2019-07-18
Filing date: 2020-07-03
Publication date: 2021-01-21
Also published as: CN110417963A

Abstract

A terminal device, comprising a housing (100) and a fingerprint module (200). The fingerprint module (200) comprises a fingerprint chip (210) and a circuit board (220). The housing (100) has a hole (110). A part of the fingerprint chip (210) is provided in the hole (110). The fingerprint chip (210) is connected to the circuit board (220). The housing (100) is fixedly connected to the circuit board (220).

Description

Terminal Equipment

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910652074.6 filed in China on July 18, 2019, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the field of communication equipment, and in particular to a terminal device.

Background technique

As a product of the information age, terminal equipment has brought great changes to people's production and lifestyles. With the continuous emergence of various new technologies, terminal devices are no longer limited to simple call functions. Users can also conduct electronic banking transactions, wireless securities transactions, wireless online shopping and other applications through terminal devices. Terminal devices are bringing convenience to people. At the same time, personal privacy leakage and other issues pose severe challenges to the information security system.

The security risks of terminal equipment have attracted more and more attention, which has promoted the development of new technologies. Fingerprint recognition technology is one of the best. The uniqueness and security of fingerprints are favored by major manufacturers, which also makes various configurations Fingerprint recognition terminal equipment is popularized.

The decorative ring is a component of the fingerprint recognition module in the design of related technologies. It is above the fingerprint module circuit board and surrounds the fingerprint chip. It is connected to the ground non-functional part of the motherboard through conductive foam to protect and decorate. And the role of static electricity.

In order to make fingerprint recognition more obvious, the fingerprint surface and the outer surface of the housing have a certain height difference, that is, there is a certain level difference. The smaller the level difference, the better the hand feel. However, due to the existence of the decorative ring, the shell is directly bonded to the skirt of the decorative ring, so the thickness of the skirt of the decorative ring will make the difference between the fingerprint surface and the outer surface of the shell large, which will affect the user's touch feeling. , Which ultimately leads to poor user experience.

Summary of the invention

The embodiments of the present disclosure provide a design solution for a terminal device to solve the problem of a large gap between the fingerprint chip and the housing of the terminal device.

In order to solve the above problems, the present disclosure adopts the following technical solutions:

A terminal device includes a fingerprint module and a housing, the fingerprint module includes a fingerprint chip and a circuit board, the housing has an opening, a part of the fingerprint chip is arranged in the opening, and the The fingerprint chip is connected with the circuit board, and the housing is fixedly connected with the circuit board.

The technical solution adopted by the present disclosure can achieve the following beneficial effects:

In the terminal device disclosed in the present disclosure, compared with the related art, the circuit board is fixedly connected to the housing through the skirt of the fingerprint decorative ring, and the fixed connection between the circuit board and the housing can undoubtedly make the circuit board spaced from the hole. The distance is closer, so that the fingerprint chip mounted on the circuit board can be closer to the outer port of the opening, that is, the step difference between the chip and the outer surface of the housing can be reduced, thereby improving the touch feel of the finger during the fingerprint recognition process . At the same time, since the terminal device disclosed in the embodiment of the present disclosure can omit the fingerprint decorative ring, the manufacturing cost of the fingerprint identification module can be reduced, which indirectly makes the manufacturing cost of the terminal device lower.

Description of the drawings

The drawings described here are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure, and do not constitute an improper limitation of the present disclosure. In the attached picture:

Figure 1 is a schematic structural diagram of a terminal device disclosed in an embodiment of the disclosure;

Fig. 2 is a partial structural diagram of a fingerprint module of a terminal device disclosed in an embodiment of the disclosure.

Description of reference signs:

100-shell, 200-fingerprint module,

110-opening, 210-fingerprint chip, 220-circuit board,

211-chamfer, 221-first groove, 222-second groove,

230-pad, 240-adhesive, 250-filler.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the technical solutions of the present disclosure will be described clearly and completely in conjunction with specific embodiments of the present disclosure and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

The technical solutions disclosed in each embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1-2, embodiments of the present disclosure disclose a terminal device, which includes a housing 100 and a fingerprint module 200.

The housing 100 is a peripheral component of the terminal device, and the housing 100 can provide an installation location for other components of the terminal device. In the embodiment of the present disclosure, the fingerprint module 200 is installed on the housing 100, so as to realize the assembly in the terminal device. The housing 100 has an opening 110 and an inner cavity, and the opening 110 communicates with the inner cavity. The shape of the opening 110 may be a square, a circle, or other shapes, which is not limited in the present disclosure.

The fingerprint module 200 includes a fingerprint chip 210 and a circuit board 220, and the fingerprint chip 210 is connected to the circuit board 220. Under normal circumstances, the fingerprint chip 210 can be fixed on the circuit board 220 to realize the assembly with the circuit board 220.

The fingerprint module 200 is arranged in the inner cavity, and a part of the fingerprint chip 210 is arranged in the opening 110, so that the fingerprint sensing part of the fingerprint chip 210 is exposed from the housing 100 and can be touched by the user's finger for fingerprint identification.

In the embodiment of the present disclosure, the housing 100 and the circuit board 220 are fixedly connected, so as to realize the assembly of the entire fingerprint module 200 on the housing 100.

The terminal device disclosed in the embodiments of the present disclosure transforms the structure of the terminal device in the related technology, removes the fingerprint decorative circle in the fingerprint module 200 in the related technology, and directly connects the circuit board 220 and the housing 100 to achieve The fingerprint module 200 is assembled on the housing 100. Compared with the related art, the circuit board 220 is fixedly connected to the housing 100 through the skirt of the fingerprint decoration ring, the fixed connection of the circuit board 220 and the housing 100 can undoubtedly make the distance between the circuit board 220 and the opening 110 be longer. Therefore, the fingerprint chip 210 mounted on the circuit board 220 can be closer to the outer port of the opening 110, that is, the step difference between the fingerprint chip 210 and the outer surface of the housing 100 can be reduced, thereby improving the fingerprint recognition process The touch of the finger.

At the same time, since the terminal device disclosed in the embodiment of the present disclosure can omit the fingerprint decorative ring, the manufacturing cost of the fingerprint identification module can be reduced, which indirectly makes the manufacturing cost of the terminal device lower.

The fingerprint chip 210 is connected to the circuit board 220. The circuit board 220 provides an installation basis for the fingerprint chip 210 and can also supply power to the fingerprint chip 210. Therefore, the fingerprint chip 210 is electrically connected to the circuit board 220. There are many ways to realize the electrical connection between the fingerprint chip 210 and the circuit board 220. For example, the fingerprint chip 210 and the circuit board 220 may be electrically connected by metal wires. In another optional solution, the circuit board 220 may be provided with a pad 230, and the fingerprint chip 210 and the pad 230 are welded and fixed. In this case, the pad 230 can not only realize a fixed connection between the fingerprint chip 210 and the circuit board 220, but also realize an electrical connection between the two, so that the fingerprint chip 210 is powered by the circuit board 220.

The bonding pad 230 is usually made of soldering material. Of course, the bonding pad 230 may also be made of other materials that can realize the electrical connection and fixed connection between the fingerprint chip 210 and the circuit board 220.

The fingerprint chip 210 is soldered to the circuit board 220 through the soldering pad 230. In order to ensure the stability of the soldering, the soldering pad 230 usually protrudes from the surface of the circuit board 220 to ensure that there is enough solder to melt during the soldering process to connect the fingerprint Chip 210. In this case, the fingerprint chip 210 is supported on the surface of the circuit board 220 through the pad 230. At this time, a gap is formed between the fingerprint chip 210 and the circuit board 220. When the terminal device is bumped or dropped, the fingerprint chip 210 is easily detached from the pad 230. It can be seen that the solder connection between the fingerprint chip 210 and the pad 230 is poorly assembled.

Based on this, in another optional solution, the gap between the fingerprint chip 210 and the circuit board 220 may be filled with a filler 250. In this case, the fingerprint chip 210 and the circuit board 220 are connected through the pad 230 and the filler 250, so that the assembly firmness can be better. At the same time, the filler 250 is arranged in the gap to seal the gap, thereby preventing foreign objects from entering the gap and damaging the fingerprint chip 210 or the circuit board 220.

Under normal circumstances, the larger the amount of the filler 250, the better the stability of the bonding. Based on this, in an optional solution, the bottom edge of the fingerprint chip 210 can be provided with a chamfer 211, and the setting of the chamfer 211 can be The space for accommodating the filler 250 is larger, and the connection between the fingerprint chip 210 and the circuit board 220 is stronger. Specifically, the shape of the chamfer 211 may be a flat corner, a rounded corner, or other shapes of chamfers, and the embodiment of the present disclosure does not limit the shape of the chamfer 211. At the same time, the chamfer 211 is arranged on the bottom edge of the fingerprint chip 210, so as to better prevent the fingerprint chip 210 from interfering with the housing 100 during the assembly process. Moreover, due to the setting of the chamfer 211, It can alleviate the glue overflow of the filler 250 during the filling process and the adhesion of the shell 100.

At the same time, the amount of filler 250 can also be increased in other ways. In another optional solution, the circuit board 220 may be provided with a first groove 221, and a part of the filler 250 may be filled in the first groove 221. The opening of the first groove 221 is essentially a part of the circuit board 220. The structure, thereby forming a larger space to accommodate the filler 250. Specifically, the first groove 221 is opened in an area covered by the fingerprint chip 210 on the circuit board 220 and is arranged at a position on the circuit board 220 opposite to the bottom edge of the fingerprint chip 210.

In the specific working process, the terminal equipment will generate static electricity, and the existence of static electricity will have an adverse effect on the operation of the terminal equipment. Generally, in order to prevent static electricity from damaging components such as the fingerprint chip 210, the terminal equipment in the related art usually discharges static electricity through a decorative ring. In the terminal device disclosed in the embodiment of the present disclosure, the circuit board 220 may be provided with a second groove 222. The bottom surface of the second groove 222 is a metal surface, and the bottom surface of the second groove 222 can be connected to the grounding part of the circuit board 220. The metal surface has good electrical conductivity, and static electricity can pass through the metal surface of the second groove 222 to achieve Static discharge. At the same time, the insulating properties of the above-mentioned filling glue 250 prevent static electricity from entering the gap between the fingerprint chip 210 and the circuit board 220, so that important components such as the fingerprint chip 210 are protected.

Specifically, the second groove 222 may be opened in an area covered by the housing 100 on the circuit board 220, so as to achieve a waterproof function.

In the terminal device disclosed in the present disclosure, there are many ways to connect the housing 100 and the circuit board 220, such as welding, riveting, and bonding. In another alternative solution, the housing 100 and the circuit board 220 are adhered by an adhesive 240. Adhesive 240 has the advantages of simple operation and stable connection.

At the same time, in order to ensure full utilization of the adhesive 240 without hindering the operation of other components, the adhesive 240 can be arranged between the edge of the circuit board 220 and the housing 100, so that the housing 100 is on the circuit board 220. Effective connection.

The aforementioned circuit board 220 may be a flexible circuit board or a rigid circuit board. In another optional solution, the circuit board 220 may be a flexible circuit board, which has the advantages of good deformability, solderability, ease of assembly, and low overall cost. At the same time, a fingerprint reinforcing plate may be provided on the side of the flexible circuit board away from the fingerprint chip 210, and the reinforcing plate can carry and strengthen the circuit board 220.

As described above, the opening 110 is opened in the housing 100. In another optional solution, the housing 100 includes a battery cover, and the opening 110 may be opened on the battery cover. This method can make it easier for the fingerprint identification device to collect fingerprint information of the finger, thereby achieving corresponding functions faster.

The terminal devices disclosed in the embodiments of the present disclosure may be electronic devices such as smart phones, tablet computers, e-book readers, and wearable devices. Of course, the terminal device may also be other devices, and the embodiments of the present disclosure do not limit the specific types of terminal devices.

The above embodiments of the present disclosure focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the conciseness of the text, here is No longer.

The foregoing descriptions are merely embodiments of the present disclosure, and are not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the scope of the claims of the present disclosure.

Claims

A terminal device includes a housing (100) and a fingerprint module (200). The fingerprint module (200) includes a fingerprint chip (210) and a circuit board (220). The housing (100) has an opening (110), part of the fingerprint chip (210) is arranged in the opening (110), and the fingerprint chip (210) is electrically connected to the circuit board (220), and the housing (100) is connected to The circuit board (220) is fixedly connected.
The terminal device according to claim 1, wherein the circuit board (220) is provided with a pad (230), and the fingerprint chip (210) and the pad (230) are welded and fixed.
The terminal device according to claim 2, wherein a gap is formed between the pad (230) and the fingerprint chip (210), and a filler (250) is filled in the gap.
The terminal device according to claim 3, wherein the bottom edge of the fingerprint chip (210) is provided with a chamfer (211).
The terminal device according to claim 3, wherein the circuit board (220) is provided with a first groove (221), and the first groove (221) is arranged on the circuit board (220) and At positions opposite to the bottom edge of the fingerprint chip (210), part of the filler (250) is filled in the first groove (221).
The terminal device according to claim 1, wherein the circuit board (220) is provided with a second groove (222), and the second groove (222) is opened on the circuit board (220) and is The area covered by the casing (100) and the bottom surface of the second groove (222) is a metal surface.
The terminal device according to claim 1, wherein the circuit board (220) is a flexible circuit board.
The terminal device according to claim 1, wherein the housing (100) and the circuit board (220) are adhesively connected by an adhesive (240), and the adhesive (240) is arranged on the Between the edge of the circuit board (220) and the housing (100).
The terminal device according to claim 1, wherein the housing (100) comprises a battery cover, and the opening (110) is provided on the battery cover.