CN102143306B - Camera module and electronic product using the camera module - Google Patents

Abstract

The invention discloses a camera module, which comprises a substrate, a lens module and a driving circuit, wherein the substrate comprises a first surface and a second surface opposite to the first surface; the lens module is arranged on the first surface of the substrate; and the driving circuit is arranged on the first surface of the substrate and is electrically connected with the lens module. The camera module also comprises an electromagnetic shielding case which is fixed on the first surface of the substrate and shields the driving circuit. The invention also provides an electronic product employing the camera module.

Description

Camera module and electronic product using the camera module

technical field

The invention relates to a camera module and an electronic product using the camera module, in particular to a camera module with an electromagnetic interference shielding cover and an electronic product using the camera module.

Background technique

The rapid development of multimedia technology has made electronic products such as mobile phones and notebook computers with shooting functions more and more widely used. With the continuous improvement of consumers' requirements for the use of such electronic products and the intensification of competition in the electronic product market, manufacturers have become more and more strict in controlling the quality of their manufactured products.

The driving circuit of the lens module in the existing electronic products has no electromagnetic protection device, so it is easily affected by electromagnetic interference from other electronic components on the body, resulting in poor imaging of the lens module, so that such electronic products cannot pass the anti-electromagnetic interference (Electromagnetic Interference) Magnetic Interference (EMI) testing, resulting in an increase in the defective rate of finished products and an increase in the corresponding production costs.

Contents of the invention

In view of this, it is necessary to provide a camera module and an electronic product using the camera module that can improve the problems existing in electronic products with a shooting function in the prior art.

A camera module comprising a substrate, the substrate comprising a first surface and a second surface opposite to the first surface; a lens module mounted on the first surface of the substrate; and a lens module mounted on the substrate The drive circuit on the first surface is electrically connected to the lens module. The camera module further includes an electromagnetic shielding cover fixed on the first surface of the substrate and shielding the driving circuit. A plurality of first installation holes surrounding the driving circuit are opened on the first surface of the substrate. The electromagnetic shielding cover includes a housing part that shields the driving circuit and a plurality of pins extending from the housing part that are matched with the first mounting holes one by one.

An electronic product, which includes a camera module, the camera module includes a substrate, the substrate includes a first surface and a second surface opposite to the first surface; installed on the first surface of the substrate a lens module; and a drive circuit installed on the first surface of the substrate, the drive circuit is electrically connected to the lens module. The camera module further includes an electromagnetic shielding cover fixed on the first surface of the substrate and shielding the driving circuit. A plurality of first installation holes surrounding the driving circuit are opened on the first surface of the substrate. The electromagnetic shielding cover includes a housing part that shields the driving circuit and a plurality of pins extending from the housing part that are matched with the first mounting holes one by one.

Compared with the prior art, the camera module of the present invention has the following advantages: first, the camera module has anti-electromagnetic interference, and is easy to realize anti-static function, which can ensure the normal operation of the lens module in the camera module, Obtain a better imaging effect; second, the camera module is easy to implement, each component is easy to connect and install stably, and the phenomenon of component falling off is not easy to occur, which can fully ensure that the camera module passes the anti-electromagnetic interference test and electrostatic protection Test, improve the yield rate of finished products, and reduce the corresponding production costs.

Description of drawings

FIG. 1 is a schematic diagram of a camera module provided by a first embodiment of the present invention. The camera module includes a substrate, a lens module, a driving circuit and an electromagnetic shielding cover.

FIG. 2 is a schematic diagram of another viewing angle of the camera module shown in FIG. 1 .

FIG. 3 is a schematic diagram of the camera module shown in FIG. 1 before assembly.

FIG. 4 is a schematic diagram of the state before the electromagnetic shielding cover of the camera module shown in FIG. 1 is assembled.

FIG. 5 is a schematic diagram of the state after the pins of the electromagnetic shielding cover shown in FIG. 4 are bent.

FIG. 6 is a schematic diagram of a notebook computer using the camera module shown in FIG. 1 provided by a second embodiment of the present invention.

Description of main component symbols

Substrate 10

First Surface 11

Second Surface 12

The first mounting hole 13

Second mounting hole 14

Lens module 20

Lens drive circuit 30

Electromagnetic shielding cover 40, 70

Shell part 41

Pin 43

Fixed part 45

Ground wire 50, 80

Drive circuit 60

Camera module 100

Laptop 200

screen 201

Screen frame 203

Detailed ways

The technical solution will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIGS. 1 to 3 , the first embodiment of the present invention provides a camera module 100 , which includes a substrate 10 , a lens module 20 , a lens driving circuit 30 and an electromagnetic shield 40 .

The substrate 10 has a first surface 11 and a second surface 12 opposite to the first surface 11 . The first surface 11 defines four first mounting holes 13 and two second mounting holes 14 leading to the second surface 12 . The first installation hole 13 is used for installing the electromagnetic shielding cover 40 . The second mounting hole 14 cooperates with a screw or a bolt (not shown), so that the camera module 100 is mounted on an electronic product (not shown).

It can be understood that a buckle structure can also be designed on the substrate 10, and the camera module 100 can be mounted on an electronic product through the buckle structure, thereby avoiding opening a second mounting hole on the substrate 10. 14.

The lens module 20 is installed on the first surface 11 of the substrate 10 . The lens module 20 includes a lens group and an image sensing element (not shown).

The lens driving circuit 30 is installed on the first surface 11 of the substrate 10, the lens driving circuit 30 is adjacent to the lens module 20, and the lens driving circuit 30 is electrically connected to the lens module 20. Sexual connection, thus, through the lens driving circuit 30, the lens module 20 can be electrically driven to realize the shooting function of the lens module 20.

Please refer to FIG. 4 , the electromagnetic shielding case 40 has a shell portion 41 and four pins 43 extending from the shell portion 41 . The four pins 43 are matched with the four first installation holes 13 on the substrate 10 one by one.

In this embodiment, the housing part 41 of the electromagnetic shielding cover 40 is a square structure, and the pins 43 are a sheet structure. The four pins 43 respectively extend from four corners of the casing part 41 .

Preferably, the electromagnetic shielding cover 40 is made of metal material or composite material containing metal, so as to realize the function of electromagnetic interference shielding.

Preferably, the housing part 41 completely covers the lens driving circuit 30, thereby, the electromagnetic shielding cover 40 can effectively shield electromagnetic waves generated by other electronic components, protect the lens driving circuit 30, and ensure that the lens module Group 20 works fine. At the same time, the electromagnetic shielding cover 40 can also effectively shield the electromagnetic waves generated by the lens driving circuit 30 , preventing other electronic components from being interfered by the electromagnetic waves generated by the lens driving circuit 30 to affect their normal operation.

In this embodiment, in order to facilitate the installation of the electromagnetic shielding cover 40 and ensure that the electromagnetic shielding cover 40 completely covers the lens driving circuit 30 , the first installation hole 13 of the substrate 10 is arranged around the lens driving circuit 30 .

In this embodiment, the electromagnetic shielding cover 40 shields the lens driving circuit 30 so that the lens driving circuit 30 is in a closed state. Of course, the electromagnetic shielding cover 40 can also be configured according to the actual structure of the lens driving circuit 30. It can be designed as other structures, as long as it can realize the function of electromagnetic interference shielding.

Please refer to FIG. 2 and FIG. 5 together. Each of the pins 43 protrudes from the corresponding first mounting hole 13 to the second surface 12 of the substrate 10 and then bends to form a fixing portion 45 . The fixing portion 45 fixes the electromagnetic shielding cover 40 to the substrate 10 .

Further, in order to ensure that the electromagnetic shielding cover 40 is fixed on the substrate 10, the fixing part 45 is fixed on the substrate 10 by conductive silver glue, thus, dispensing equipment can also be used according to actual conditions for manual or automatic Dispensing.

Further, one of the fixing parts 45 is connected to the grounding wire 50 , thus, the electrostatic protection (Electro-Static discharge, ESD) of the camera module 100 can be realized, and the electrostatic protection test of the camera module 100 can be satisfied.

Preferably, the ground wire 50 is directly connected to the conductive silver glue that fixes the fixing portion 45, thereby facilitating the connection of the ground wire 50 to the electromagnetic shield 40 and realizing the anti-static protection of the camera module 100 .

Please refer to FIG. 1 to FIG. 3 again. In this embodiment, another driving circuit 60 is installed on the first surface 11 of the substrate 10 , and the driving circuit 60 is used to drive other components (not shown). Correspondingly, the driving circuit 60 is shielded by an electromagnetic shielding cover 70 to realize electromagnetic shielding protection. At the same time, the electromagnetic shielding cover 70 is connected to the ground wire 80 .

It can be understood that, the grounding wire 50 and the grounding wire 80 can be connected to each other and lead out together, thereby facilitating unified electrostatic protection for the camera module 100 .

Referring to FIG. 6 , the second embodiment of the present invention provides a notebook computer 200 equipped with the camera module 100 provided by the first embodiment of the present invention.

In this embodiment, the camera module 100 is installed above the screen 201 of the notebook computer 200 , and the camera module 100 as a whole is accommodated inside the casing of the screen frame 203 of the notebook computer 200 .

Compared with the prior art, the camera module of the present invention has the following advantages: first, the camera module has anti-electromagnetic interference, and is easy to implement anti-static function, which can ensure the normal operation of the lens module in the camera module, Obtain a better imaging effect; second, the camera module is easy to implement, and the components are easy to connect and install stably, and the phenomenon of components falling off is not easy to occur, which can fully ensure that the camera module passes the anti-electromagnetic interference test and electrostatic protection Test, improve the yield rate of finished products, and reduce the corresponding production costs.

In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims (8)

1. A camera module, comprising: A substrate comprising a first surface and a second surface opposite to the first surface; a lens module mounted on the first surface of the substrate; and a drive circuit installed on the first surface of the substrate, the drive circuit is electrically connected to the lens module; It is characterized in that the camera module further includes an electromagnetic shielding cover fixed on the first surface of the substrate and shielding the drive circuit, and a plurality of first shields surrounding the drive circuit are opened on the first surface of the substrate. Mounting holes, the electromagnetic shielding cover includes a housing part that shields the driving circuit and a plurality of pins extending from the housing part that are matched with the first mounting holes one by one. 2. The camera module according to claim 1, wherein each of the pins protrudes from the corresponding first mounting hole to the second surface of the substrate and then bends to form a fixing portion, so The fixing part fixes the electromagnetic shielding cover to the substrate. 3. The camera module according to claim 2, wherein the fixing part is further fixed on the substrate by conductive silver glue. 4. The camera module according to claim 2, wherein one of the fixing parts is connected to a ground element. 5 . The camera module according to claim 1 , wherein the casing part of the electromagnetic shielding cover completely covers the driving circuit. 6 . 6. The camera module according to claim 4, wherein the ground element is a ground wire. 7. The camera module according to claim 1, wherein the electromagnetic shield is made of a metal or a composite material containing a metal material. 8. An electronic product comprising the camera module according to any one of claims 1-7.

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