CN106998410B - camera module - Google Patents

Abstract

The present invention discloses a camera module and an assembly method of the camera module, wherein the camera module comprises a lens assembly, a power element having a first circuit board, a second circuit board and a welding element. The first circuit board is bent so that the electrical contacts of the first circuit board are exposed on the side of the power element. The second circuit board has a via corresponding to the electrical contact, and the via is exposed on one side of the second circuit board. The welding element is arranged on the side of the power element and the side of the second circuit board, and contacts the electrical contact and the via respectively to establish an electrical connection between the first circuit board and the second circuit board.

Description

camera module

technical field

The present invention relates to a camera module, in particular to a camera module with zoom function.

Background technique

Portable electronic devices such as mobile communication devices and PDAs (Personal Digital Assistant, PDA) with a photographing function are increasingly popular, and due to the portable electronic device's easy-to-carry characteristics, the photographing function has become a basic feature of portable electronic devices. function, that is, a camera module is provided in the portable electronic device. Generally speaking, a camera module with basic functions includes a lens assembly and a sensing chip. The function of the lens assembly is to refract external light and allow the external light to pass through for imaging work. The sensing chip has a sensing area, and the function of the sensing area is Then, the external light is received to form an image thereon, thereby generating an image.

Next, the structure of the conventional camera module will be described. Please refer to FIG. 1 , which is a schematic exploded view of the structure of a conventional camera module. The camera module 1 includes a lens assembly 10, a voice coil motor 11 and a circuit board 12. The lens assembly 10 is combined with the voice coil motor 11, and its function is to capture an object to obtain an image, and the voice coil motor 11 has a flexible circuit board. 111. The flexible circuit board 111 is disposed on the side of the lens assembly 1 so that the plurality of first electrical contacts 112 on the flexible circuit board 111 can be exposed on the side of the lens assembly 1 . The circuit board 12 includes a sensing chip 121 and a plurality of second electrical contacts 122 . The sensing chip 121 is disposed on the circuit board and has the functions described above. A plurality of second electrical contacts 122 are disposed on the side of the circuit board 12 , and each second electrical contact 122 corresponds to a first electrical contact 112 .

Next, please refer to FIG. 2 , which is a schematic structural diagram of a conventional camera module. FIG. 2 shows the combined structure of the lens assembly 10 , the voice coil motor 11 and the circuit board 12 . After the voice coil motor 11 is placed on the circuit board 12 , the plurality of first electrical contacts 112 on the flexible circuit board 111 The plurality of second electrical contacts 122 on the circuit board 12 are close to, and the plurality of first electrical contacts 112 and the plurality of second electrical contacts are connected by disposing a plurality of soldering elements 13 on the side of the circuit board 12 122 , so that electrical connections between the plurality of first electrical contacts 112 and the plurality of second electrical contacts 122 can be established. After the electrical connection between the voice coil motor 11 and the circuit board 12 is established, the camera module 1 can be operated.

In the existing camera module 1 , since a plurality of second electrical contacts 122 are disposed on the side of the circuit board 12 , and a plurality of soldering elements 13 must be disposed on the side of the circuit board 12 , they must be on the side of the circuit board 12 . A reserved area 123 is reserved on the side, so that the width T1 of the circuit board 12 is greater than the width T2 of the voice coil motor 11 . On the other hand, as the volume of the portable electronic device becomes thinner and lighter, the portable electronic device must have rich functionality, which makes it difficult to configure the internal components of the portable electronic device. In short, it is difficult for many internal components to be properly arranged inside a portable electronic device with limited space. That is to say, the circuit board 12 provided with the reserved area 123 will make it difficult for the existing camera module 1 to be installed inside the portable electronic device.

Therefore, there is a need for a camera module with a thin and light volume.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a camera module with a light and thin volume.

In a preferred embodiment, the present invention provides a camera module including a lens assembly, a power element, a second circuit board and a soldering element. The power element is connected to the lens assembly for moving the lens assembly, and the power element has a first circuit board; wherein, the first circuit board has an electrical contact, and the electrical contact is exposed on the power element side. The second circuit board is disposed below the first circuit board, and has a through hole corresponding to the electrical contact; wherein, the through hole is exposed on one side of the second circuit board. The soldering element is disposed on the side of the power element and the side of the second circuit board, and is in contact with the electrical contact and the via hole, respectively, for establishing the first circuit board and the second circuit board Electrical connections to the circuit board.

In a preferred embodiment, the present invention provides a method for assembling a camera module, comprising the following steps: (A) providing the camera module; wherein the camera module has a power element, and a first circuit board of the power element An electrical contact of the camera module is exposed on one side of the power element; (B) a via hole is provided on a second circuit board of the camera module, so that the via hole is exposed on one side of the second circuit board and (C) disposing a soldering element on the side of the first circuit board and the side of the second circuit board to connect the electrical contact and the via hole to establish the first circuit The electrical connection between the board and the second circuit board.

In a preferred embodiment, the present invention provides a method for assembling a camera module, comprising the following steps: (B) disposing a via hole on a first circuit board of the camera module so that the via hole is exposed on the camera module; One side of the first circuit board; (A) providing the camera module; wherein the camera module has a power element, and an electrical contact of a second circuit board of the power element is exposed on one side of the power element and (C) disposing a soldering element on the side of the first circuit board and the side of the second circuit board to connect the electrical contact and the via hole to establish the first circuit The electrical connection between the board and the second circuit board.

In short, the camera module of the present invention is provided with a via hole on one side of the second circuit board, and one side of the second circuit board is cut according to the size of the power element, so that the cut via hole can be exposed on the first circuit board. Two sides of the circuit board. The size of the cut second circuit board is similar to the size of the power element. Therefore, the side of the second circuit board does not need to reserve a reserved area as in the prior art, and a smaller volume of the second circuit board can be combined with the power element to reduce the volume of the camera module. Therefore, the camera module of the present invention has a smaller volume, and is helpful for the configuration of the internal components of the portable electronic device.

Description of drawings

FIG. 1 is a schematic diagram of an exploded structure of a conventional camera module.

FIG. 2 is a schematic structural diagram of a conventional camera module.

FIG. 3 is a schematic exploded view of the structure of the camera module of the present invention in a preferred embodiment.

FIG. 4 is a schematic structural diagram of the combination of the power element of the camera module and the second circuit board in a preferred embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a camera module of the present invention in a preferred embodiment.

FIG. 6 is a schematic block diagram of a method for assembling a camera module of the present invention in a preferred embodiment.

FIG. 7 is a schematic block diagram of an assembling method of a camera module in another preferred embodiment of the present invention.

Among them, the reference numerals are described as follows:

1 camera module

2 camera module

10 Lens Components

20 Lens Components

11 Voice coil motor

12 circuit boards

13 Soldering Components

23 Soldering Components

21 Power element

22 Second circuit board

111 Flexible circuit board

112 The first electrical contact

121 Induction chip

122 Second electrical contact

123 Reserved area

211 First circuit board

212 Electrical contacts

221 Via hole

222 opening

223 Conductive materials

Width of T1 board

Width of T2 voice coil motor

A step

A* step

B step

C step

D step

Step B1

Step B2

Step B3

L dotted line

Detailed ways

In view of the problems of the prior art, the present invention provides a camera module that can solve the problems of the prior art. First, the structure of the camera module of the present invention will be described. Please refer to FIG. 3 and FIG. 4 at the same time. FIG. 3 is a schematic exploded view of the structure of the camera module of the present invention in a preferred embodiment, and FIG. 4 is the power element and the first camera module of the present invention. A schematic diagram of the structure of the combination of two circuit boards in a preferred embodiment. The camera module 2 includes a lens assembly 20, a power element 21 having a first circuit board 211, a second circuit board 22, and a plurality of soldering elements 23, and the structure and function of the lens assembly 20 are the same as those of the existing lens assembly 10, but not the same. Repeat. The power element 21 is connected to the lens assembly 20 , which can move the lens assembly 20 along the axial direction, and the first circuit board 211 of the power element 21 is disposed at the bottom of the power element 21 , and the first circuit board 211 has a plurality of electrical contacts 212. The first circuit board 211 is partially bent, and a plurality of electrical contacts 212 are arranged on the bent area, so that the plurality of electrical contacts 212 are exposed on the side of the power element 21 . In this preferred embodiment, the power element 21 is a voice coil motor, and the first circuit board 211 is a flexible flexible circuit board.

The second circuit board 22 is disposed under the first circuit board 211 and has a plurality of via holes 221 corresponding to the plurality of electrical contacts 212 , and the plurality of via holes 221 are exposed on the side of the second circuit board 22 . Each via hole 221 includes an opening 222 and a conductive material 223 . The opening 222 penetrates the second circuit board 22 and is disposed on the side of the second circuit board 22 . The conductive material 223 is disposed in the corresponding opening 222 , and the plurality of openings 222 and the plurality of conductive materials 223 are exposed on the side of the second circuit board 22 , as shown in FIG. 4 . In this preferred embodiment, the second circuit board 22 can be selected from one of a rigid-flex board, a ceramic substrate, a FR4 copper foil substrate and a FR5 copper foil substrate.

In order to establish the electrical connection between the first circuit board 211 and the second circuit board 22, a plurality of soldering elements 23 are arranged on the side of the power element 21 and the side of the second circuit board 22, and are respectively connected with a plurality of electrical contacts 212 and the conductive materials 223 in the plurality of via holes 221 are in contact to establish electrical connections between the plurality of electrical contacts 212 and the plurality of via holes 221, that is, to establish the first circuit board 211 and the second circuit The electrical connection of the board 22 is shown in FIG. 5 .

Next, an assembling method of the camera module 2 of the present invention will be described. Please refer to FIG. 6 , which is a schematic block diagram of the assembling method of the camera module of the present invention in a preferred embodiment. The assembly method of the camera module includes the following steps:

Step A: Provide a camera module, and bend the first circuit board of the power element, so that a plurality of electrical contacts of the first circuit board are exposed on the side of the first circuit board.

Step B: Disposing a plurality of through holes on the second circuit board so that the plurality of through holes are exposed on the side of the second circuit board.

Step C: Combine the power element and the second circuit board.

Step D: Arrange a plurality of soldering components on the side of the first circuit board and the side of the second circuit board, and connect a plurality of electrical contacts and a plurality of via holes to establish the first circuit board and the second circuit electrical connection of the board.

Wherein, step B includes the following steps:

Step B1: Disposing a plurality of openings on one side of the second circuit board.

Step B2 : respectively disposing a plurality of conductive materials in the plurality of openings to form a plurality of via holes.

Step B3 : cutting one side of the second circuit board according to the size of the power element to expose a plurality of openings and a plurality of conductive materials on the side of the second circuit board.

The assembling method of the camera module 2 firstly performs step A: bending the first circuit board 211 so that the plurality of electrical contacts 212 are exposed on the side of the power element 21 . Next, step B1 is performed: a plurality of openings 222 are arranged on one side of the second circuit board 22, and then a plurality of conductive materials 223 are placed in the corresponding openings 222 to form a plurality of vias 221, That is, step B2 is performed. Next, step B3 is performed: according to the size of the power element 21 , one side of the second circuit board 212 is cut to expose a plurality of openings 222 and a plurality of conductive materials 223 on the side of the second circuit board 22 . The cut side of the two circuit boards 212 is defined as the side of the second circuit board 22 . The size of the cut second circuit board 212 is quite close to the size of the power element 21, as shown in FIG. 3 . In a preferred practice, the size of the cut second circuit board is the same as the size of the power element, but not limited to this.

After step B is completed, step C is performed: placing the power element 21 on the second circuit board 212 to combine the power element 21 and the second circuit board 212 , as shown in FIG. 4 . Finally, proceed to step D: disposing a plurality of soldering elements 23 on the side of the first circuit board 211 and the side of the second circuit board 22 to connect the plurality of electrical contacts 212 and the plurality of through holes 221 to establish the first circuit board The electrical connection between a circuit board 211 and the second circuit board 22 is shown in FIG. 5 . The assembly method of the camera module 2 is completed.

5 shows that the side of the second circuit board 22 and the side of the power element 21 are aligned with the dotted line L, that is, the side of the second circuit board 22 does not need to reserve a reserved area as in the prior art, The smaller volume of the second circuit board 22 can be combined with the power element 21 to reduce the overall volume of the camera module 2 , thereby solving the problem that the camera module is difficult to install inside the portable electronic device.

It should be noted that, in step A, the first circuit board 211 is disposed on the bottom of the power element 21 , so the first circuit board 211 must be bent to expose the plurality of electrical contacts 212 on the side of the power element 21 . It is only an example, not a limitation. In another preferred embodiment, the first circuit board can also be directly disposed on the side of the power element, so that the first circuit board can be exposed to expose a plurality of electrical contacts on the side of the power element without bending the first circuit board.

In addition, the present invention further provides another preferred embodiment which is different from the above method. Please refer to FIG. 7 , which is a schematic block diagram of an assembling method of a camera module according to another preferred embodiment of the present invention. The assembling method of the camera module of the present invention comprises the following steps:

Step B: Disposing a plurality of through holes on the second circuit board so that the plurality of through holes are exposed on the side of the second circuit board.

Step A*: a camera module is provided, and a plurality of electrical contacts of the first circuit board are exposed on the side of the first circuit board.

Step C: Combine the power element and the second circuit board.

Step D: Arrange a plurality of soldering components on the side of the first circuit board and the side of the second circuit board, and connect a plurality of electrical contacts and a plurality of via holes to establish the first circuit board and the second circuit electrical connection of the board.

The steps of the assembling method of the camera module of the present preferred embodiment are substantially the same as the steps of the assembling method of the camera module of the above-mentioned preferred embodiment, and the similarities will not be repeated. The only difference between the two is that the sequence of step B in this preferred embodiment is earlier than that of step A*, wherein the operation of step B is the same as step B1 to step B3 in the above preferred embodiment. The structure of the camera module of the present preferred embodiment is the same as that of the camera module 3 of the aforementioned preferred embodiment, so it will not be repeated. It should be noted that, in step A*, the first circuit board is arranged on the side of the power element, so that a plurality of electrical contacts are exposed on the side of the first circuit board, and it is not necessary to In step A of the embodiment, bending of the first circuit board must be performed.

As can be seen from the above, the camera module of the present invention is provided with through holes on one side of the second circuit board, and one side of the second circuit board is cut according to the size of the power element, so that the cut through holes can be exposed on the first circuit board. Two sides of the circuit board. The size of the cut second circuit board is similar to the size of the power element. Therefore, the side of the second circuit board does not need to reserve a reserved area as in the prior art, and a smaller volume of the second circuit board can be combined with the power element to reduce the volume of the camera module. Therefore, the camera module of the present invention has a smaller volume, and is helpful for the configuration of the internal components of the portable electronic device.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Therefore, any other equivalent changes or modifications made without departing from the spirit disclosed in the present invention shall be included in the claims of the present invention. within the scope of the book.

Claims (6)

1. A camera module, comprising: a lens assembly; A power element is connected to the lens assembly for moving the lens assembly, the power element has a first circuit board; wherein, the first circuit board is a flexible circuit board, and the first circuit board has an electrical property a contact point, and the first circuit board is arranged in a partially bent manner, so that the electrical contact is arranged on the bent area of the first circuit board and exposed on one side of the power element; A second circuit board is disposed below the first circuit board and has a cut through hole corresponding to the electrical contact. One side of the second circuit board has been cut to form The cut via hole makes the size of the cut second circuit board equal to the size of the power element, the cut via hole includes an opening and a conductive material, the opening is A hole penetrates the second circuit board and is disposed on the side of the second circuit board, the conductive material is disposed in the opening, and the opening and the conductive material are exposed on the side of the second circuit board; and A soldering element is disposed on the side of the power element and the side of the second circuit board, and is in contact with the electrical contact and the conductive material respectively, so as to establish the electrical contact and the cutout Electrical connection of vias. 2 . The camera module of claim 1 , wherein the second circuit board is a rigid-flex composite board, a ceramic substrate, a FR4 copper foil substrate or a FR5 copper foil substrate. 3 . 3. The camera module of claim 1, wherein the power element is a voice coil motor. 4. The camera module of claim 1, wherein the side of the second circuit board is aligned with the side of the power element. 5 . The camera module of claim 1 , wherein the first circuit board is disposed on a bottom of the power element, and the first circuit board is bent so that the electrical contacts are exposed on the side of the power element 5 . side. 6 . The camera module of claim 1 , wherein the first circuit board is disposed on the side of the power element, and the electrical contact is exposed on the side of the power element. 7 .

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