WO2021092854A1 - 电路板、摄像头模组及移动终端 - Google Patents

电路板、摄像头模组及移动终端 Download PDF

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Publication number
WO2021092854A1
WO2021092854A1 PCT/CN2019/118535 CN2019118535W WO2021092854A1 WO 2021092854 A1 WO2021092854 A1 WO 2021092854A1 CN 2019118535 W CN2019118535 W CN 2019118535W WO 2021092854 A1 WO2021092854 A1 WO 2021092854A1
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WO
WIPO (PCT)
Prior art keywords
board
camera module
base
plate
circuit board
Prior art date
Application number
PCT/CN2019/118535
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English (en)
French (fr)
Inventor
瞿佳佳
李勇
安在煜
Original Assignee
南昌欧菲光电技术有限公司
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Filing date
Publication date
Application filed by 南昌欧菲光电技术有限公司 filed Critical 南昌欧菲光电技术有限公司
Priority to US17/768,210 priority Critical patent/US20240098369A1/en
Priority to EP19952573.4A priority patent/EP4040923A1/en
Priority to PCT/CN2019/118535 priority patent/WO2021092854A1/zh
Publication of WO2021092854A1 publication Critical patent/WO2021092854A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/14—Structural association of two or more printed circuits
    • H05K1/148—Arrangements of two or more hingeably connected rigid printed circuit boards, i.e. connected by flexible means

Definitions

  • the present invention relates to the technical field of optical imaging, in particular to a circuit board, a camera module and a mobile terminal.
  • Optical image stabilization is a widely recognized anti-shake technology. It compensates for the vibration of the light path through movable parts, so as to achieve the effect of reducing the blur of the photo.
  • Optical image stabilization technology is mainly divided into two categories, namely, lens movable optical image stabilization, and photosensitive chip movable optical image stabilization.
  • the lens movable optical image stabilization structure is complex, and is generally not suitable for application to the camera module of a mobile terminal. Therefore, the mobile optical image stabilization of the photosensitive chip has received more and more attention.
  • the core principle of the mobile optical image stabilization of the photosensitive chip is that under the action of the driving force, the photosensitive chip can be displaced, thereby compensating for the shift of the optical axis of the lens caused by jitter.
  • the photosensitive chip needs to be connected to the main board of the mobile terminal.
  • the photosensitive chip moves, it will be pulled by the motherboard due to relative movement. Under the action of pulling force, it is easy to cause loosening of each connection. Moreover, the resistance is greater during the movement. Therefore, when implementing the mobile optical image stabilization of the photosensitive chip, the reliability of the existing camera module is not high.
  • a circuit board, a camera module, and a mobile terminal are provided.
  • a circuit board applied to a camera module including:
  • the surface of the first plate body is provided with a photosensitive chip
  • the second board body is provided with output pins,
  • the connecting piece is connected between the second board and the first board, and when the first board and the second board are relatively close to or far away from each other, at least Part of it is deformed.
  • a camera module includes:
  • a lens carrier with lens components installed on the base A lens carrier with lens components installed on the base;
  • the side of the first board body facing away from the photosensitive chip is slidably mounted on the base, and the second board is fixed to the base
  • the first board is arranged between the lens assembly and the base, and the first board is arranged perpendicular to the optical axis of the lens assembly.
  • a mobile terminal characterized by comprising the camera module according to any one of the above embodiments.
  • FIG. 1 is a schematic diagram of the structure of a camera module in a preferred embodiment of the present invention
  • Figure 2 is an exploded view of the camera module shown in Figure 1;
  • Fig. 3 is a cross-sectional view of the camera module shown in Fig. 1;
  • FIG. 4 is a schematic diagram of the structure of the circuit board in the camera module shown in FIG. 1.
  • the present invention provides a circuit board 120 and a camera module 100.
  • the present invention also provides a mobile terminal including the camera module 100 correspondingly. With the help of the camera module 100, the mobile terminal can realize the shooting function.
  • the mobile terminal can be an electronic product such as a mobile phone, a PAD, and a camera.
  • the camera module 100 in the preferred embodiment of the present invention includes a base 110, a circuit board 120, a lens carrier 130 and a lens assembly 140.
  • the base 110 plays a bearing role, and is generally integrally formed of a metal material. According to different styling requirements of the camera module 100, the outer contour of the base 110 can be in various shapes such as a circle or a rectangle.
  • the lens carrier 130 is installed on the base 110 so that a space for preventing the circuit board 120 is formed between the lens assembly 140 and the base 110.
  • the lens assembly 140 is generally formed by stacking multiple lenses with different focal lengths, and the optical axis of the lens assembly 140 generally coincides with the central axis of the lens assembly 140. For a circular lens, the optical axis passes through the center of the circle.
  • the circuit board 120 is generally a PCB board on which many electronic components are integrated.
  • the circuit board 120 includes a first board 121, a second board 123 and a connecting member 125.
  • the first board body 121 and the second board body 123 can be regarded as two parts formed by cutting a common circuit board, and electronic components are respectively integrated thereon.
  • the connecting member 125 enables the first plate body 121 and the second plate body 123 to still form a whole functionally.
  • a photosensitive chip 127 is provided on the first board 121.
  • the photosensitive chip 127 is used to convert light into electrical signals to achieve imaging.
  • the second board body 123 is provided with output pins (not shown) for electrical connection with the main board of the mobile terminal.
  • the camera module 100 further includes a filter 150 that can filter out invisible light, and the filter 150 is covered on the surface of the photosensitive chip 127.
  • the filter 150 may be blue glass, which is used to filter out invisible light, which can avoid interference and prevent noise from being generated on the image.
  • the circuit board 120 may also integrate a gyroscope (not shown), a driving chip (not shown), a driving mechanism (not shown), etc.
  • the gyroscope detects the jitter and quantifies the degree of jitter, the drive chip generates a drive current according to the amount of jitter, and the drive mechanism performs jitter compensation under the action of the drive current.
  • the connecting member 125 is connected between the second plate body 123 and the first plate body 121, and when the first plate body 121 and the second plate body 123 are relatively close to or far away from each other, at least a part of the connecting member 125 is deformed. In other words, the second plate 123 and the first plate 121 can move independently of each other without interfering with each other.
  • the first plate 121 is slidably mounted on the base 110 on the side facing away from the photosensitive chip 127, and the second plate 123 is fixed to the base 110.
  • the first board 121 is disposed between the lens assembly 140 and the base 110, and the first board 121 is disposed perpendicular to the optical axis of the lens assembly 140.
  • Light can enter the photosensitive chip 127 through the lens assembly 140 to achieve imaging.
  • the first plate 121 can slide in a direction perpendicular to the optical axis of the lens assembly 140.
  • the first plate 121 is driven to slide in a direction perpendicular to the optical axis of the lens assembly 140, thereby driving the photosensitive chip 127 on the first plate 123 to move to compensate for the deviation of the optical axis of the lens assembly 140. Realize the mobile optical image stabilization of the photosensitive chip.
  • the photosensitive chip 127 moves with the first board 121, there is no relative movement between the two. There will be no pulling between the photosensitive chip 127 and the circuit board 120, which effectively avoids the loosening of the connection.
  • the second plate body 123 is fixed to the base 110. When the first board 121 moves, the position of the second board 123 can be kept fixed, so there will be no pulling between the second board 123 and the motherboard, and the connection between the output pins and the motherboard will not loosen .
  • the second plate 123 does not restrict the movement of the first plate 121. Therefore, the resistance of the first plate 121 during the sliding process is also relatively small.
  • the form of the connecting member 125 may be various, as long as the second plate body 123 and the first plate body 121 can be linked into one body, and the two can be moved independently. for example:
  • the connecting member 125 is a flexible connecting member.
  • the bending degree of the flexible connecting member changes.
  • the flexible connector can be a flexible and conductive structure such as a flat cable or a silver wire, and can be deformed under the action of squeezing and pulling. Specifically, the length of the flexible connecting member is greater than the distance d between the first board 121 and the second board 123 in the initial state. Therefore, the flexible connector may bend. As the first plate 121 moves, the flexible connecting member can be gradually expanded and the degree of curvature becomes smaller, so the first plate 121 will not be dragged. Therefore, when relative movement occurs between the first plate body 121 and the second plate body 123, the resistance is small.
  • the flexible connector is a plurality of flexible cables arranged side by side and spaced apart, one end of each flexible cable is electrically connected to the first board 121, and the other end of each flexible cable is electrically connected ⁇ 123 ⁇ At the second board 123.
  • a plurality of separate flexible cables realize the electrical connection between the first board 121 and the second board 123, so the wire diameter of a single flexible cable can be set to be smaller and its flexibility is better.
  • the flexible cable can be folded or unfolded, and its resistance is small.
  • the first plate body 121 and the second plate body 123 are laterally shifted from each other (that is, the first plate body 121 and the second plate body 123 relatively move in a direction perpendicular to the extension direction of the flexible cable), due to the flexibility
  • the cable is relatively soft, so the hindering effect on the first board 121 is also small. Therefore, the resistance of the first plate 121 when moving in all directions can be reduced.
  • the flexible connector may also be other flexible members.
  • the flexible connector can also be a soft board.
  • the connecting piece 125 is a stretchable elastic piece.
  • the elastic piece 125 undergoes elastic deformation to change its length.
  • the elastic elastic member may be a metal spring, or a spiral structure formed by a common wire. After the length of the elastic stretcher changes, it will generate an elastic restoring force. In this way, when the force of the anti-shake response disappears, the first plate 121 will automatically reset under the action of the elastic telescopic member. Moreover, due to the spiral structure, the wires can be regularly placed between the first board 121 and the second board 123, so as to avoid the wire entanglement inside the camera module 100.
  • the camera module 100 further includes a plurality of balls 160 arranged on the base 110, and the first plate 121 faces away from one of the photosensitive chips 127.
  • the side bearing is leaned against the side of the plurality of balls 111 facing away from the base 110.
  • the ball 160 has a spherical shape and can roll relative to the base 110. Moreover, the ball 160 needs to have a relatively high hardness and is not easily deformed. Specifically, the ball 160 may be formed of a material with high hardness such as metal, ceramic, glass, sapphire and the like.
  • the diameters of the plurality of balls 160 are generally the same and can be directly scattered on the base 110.
  • a plane can be provided on the base 110, and the ball 160 is directly placed in the plane and can roll in the plane.
  • the edge of the plane is provided with a boundary to prevent the ball 160 from rolling outside the range of the plane.
  • the ball 160 is confined to the base 110 by the pressing effect of the first plate 121.
  • receiving structures such as grooves, holes, sleeves, etc. may be formed on the base 110 for accommodating the balls 160 to prevent the balls from being scattered, thereby facilitating assembly and improving the reliability of the camera module 100.
  • the side of the first plate 121 facing away from the photosensitive chip 127 bears against the side of the plurality of balls 160 facing away from the base 110.
  • the first plate 121 and the base 110 are supported by a plurality of balls 160, and the two are in point contact.
  • the plurality of balls 160 can jointly define a sliding plane (not shown) that is tangent to the plurality of balls 160, and the first plate 121 can slide along the sliding plane. Since three points define a plane. Therefore, the number of balls 160 is at least three.
  • the balls 160 Since the first plate 121 and the balls 160 are in point contact, when the electric first plate 121 slides, the balls 160 will also roll relative to the base 110 under the action of friction. Therefore, the friction force received by the first plate body 121 during the sliding process is relatively small rolling friction. Therefore, only a small driving force is required to drive the circuit board 120 to slide, so the anti-shake response is fast, the sensitivity is higher, and the energy consumption is lower.
  • the ball 160 may roll with the sliding of the first plate 121.
  • the surface of the ball 160 is a spherical surface, and its rolling does not cause the height fluctuation of the sliding plane defined by it. Therefore, the first plate 121 will always remain on the same plane when sliding, that is, the flatness is better.
  • the first board 121 may also be slidably mounted on the base 110 by means of suspension wire, electric drive bracket, or the like.
  • the image head module 100 in this embodiment further includes a position limiting member 170.
  • the position-limiting member 170 is used to provide a force directed to the ball 160 on the first plate 121.
  • the force exerts on the first plate 121 to keep the first plate 121 in contact with the ball 160 at all times. Otherwise, a stable support cannot be formed between the first plate 121 and the balls 160, and the first plate 121 will be separated from the balls 160 when shaking or turning over.
  • the force provided by the limiting action member 170 may be pressure or pulling force; the limiting action member 170 may directly apply force to the first plate 121 in contact or non-contact force.
  • the limiting effect member 170 may have various forms, as long as it does not interfere with the sliding of the first plate 121.
  • the limiting action member 170 is a magnet provided on the base 110, and the first plate 121 is provided with a ferromagnetic member 129 that can be attracted by the magnet.
  • the ferromagnetic member 129 may be a member formed of iron, nickel, or cobalt, and is attracted to the ferromagnetic member 129 by a magnet, thereby generating a pulling force directed to the ball 160 to the first plate 121. Moreover, through the attraction of the magnet, the position-limiting member 170 exerts a non-contact force on the first plate 121. Therefore, the first plate 121 will not receive the friction force from the limiting action member 170, so the sliding resistance of the first plate 121 is smaller.
  • the magnet is always fixed in the magnetic field. Therefore, when the ferromagnetic member 129 deviates from the initial position due to the sliding of the first plate 121, the attraction force of the magnet to the ferromagnetic member 129 will cause the ferromagnetic member 129 to have a tendency to reset. In other words, when the jitter is eliminated and the driving force acting on the first plate 121 disappears, the first plate 121 can also be automatically reset under the drive of the ferromagnetic member 129.
  • the position-limiting member 170 may also be in other forms. for example:
  • the position-limiting member 170 may be a stretched elastic cord, one end of which is fixed to the base 110 and the other end to the first plate 121. Through the pulling force of the elastic cord, a force directed to the ball 160 can also be applied to the first plate 121. Moreover, when the shaking is eliminated and the driving force acting on the first plate 121 disappears, the elastic cord can also pull the first plate 121 to automatically reset.
  • the limiting action member 170 may also be a structure composed of a sleeve, a spring, and a rolling ball (the structure may be the same as that of the rolling ball 160).
  • the spring and the rolling ball are contained in the sleeve, and the compression of the spring generates a force on the rolling ball.
  • the sleeve points to the surface of the first plate 121 facing away from the ball 160 (ie, the upper surface shown in the figure), and the ball abuts against the upper surface.
  • the rolling ball exerts a force directed toward the rolling ball 160 on the first plate 121.
  • the upper and lower surfaces of the first plate 121 are all supported by rolling, so its sliding is not affected.
  • the lens carrier 130 is a voice coil motor.
  • the lens carrier 130 includes a housing 131 and a movable carrier 133 installed in the housing 131 and movable along the optical axis direction of the lens assembly 140 relative to the housing 131.
  • the lens assembly 140 is installed on the movable carrier 133, and the housing 131 is installed on the base. 110.
  • the housing 131 is generally integrated with a coil and a magnet. After the coil is energized, an electromagnetic force will be generated between the coil and the magnet. The electromagnetic force drives the movable carrier 133 to move, thereby realizing the automatic zooming of the camera module 100.
  • the lens carrier 130 also has a pin 135 extending from the end of the housing 131 close to the base 110 toward the side where the base 110 is located.
  • the pin 135 is welded to the second board 123. Disk welding.
  • the pins 135 may be soldered to the second board 123 by solder paste, so as to electrically connect the voice coil motor and the circuit board 120. Therefore, the voice coil motor can receive the current signal sent by the circuit board 120 to realize automatic zooming. At the same time, the pins 135 can also serve to fix the second board 123 to the base 110, so that there is no need to additionally provide a fixing structure between the second board 123 and the base 110.
  • the pins 135 and the pads on the second board 123 are bonded by conductive glue.
  • the conductive glue can also realize the electrical connection between the voice coil motor and the circuit board 120 and fix the second board 123. Moreover, there is no need to solder the circuit board 120 during assembly, and the operation is more convenient.
  • the camera module 100 further includes a suspension wire 180 connected to the lens carrier 130 at one end and connected to the first board 121 of the circuit board at the other end, and the suspension wire 180 can extend along its extension direction. Elastic stretch.
  • suspension wires 180 there are generally multiple suspension wires 180, and one end is generally connected to the edge of the first board 121.
  • the four suspension wires 180 are respectively connected to the four top corners of the first plate 121.
  • the suspension wire 180 can be a common elastic rope, so it can be elastically stretched and deformed. In the initial state, the suspension wire 180 may be in a natural state or a stretched state.
  • the suspension wire 180 When the first plate 121 deviates from the initial position, the suspension wire 180 will be elastically stretched, so a certain pulling force can be provided to the first plate 121. Therefore, when the anti-shake response does not occur, the suspension wire 180 can prevent the first board 121 from moving randomly. When the anti-shake response occurs, the suspension wire 180 can also play a traction effect on the first board 121.
  • the first board 121 of the circuit board 120 can slide relative to the base 110 under the action of driving force, thereby driving the photosensitive chip 127 to move relative to the lens assembly 140 to compensate for the lens assembly caused by shaking
  • the 140's optical axis is offset to achieve optical image stabilization. Since the photosensitive chip 127 is integrated on the first board 121 of the circuit board 120 and moves accordingly, there is no relative movement between the two.
  • the output pins of the second board body 123 of the circuit board 120 can be electrically connected to the main board of the mobile terminal, and the second board body 123 is fixed to the base 110.
  • the position of the second board 123 can be kept fixed, so there is no pulling between the second board 123 and the main board. Therefore, it is effectively avoided that the joints are loosened due to the pulling force. Moreover, the second plate 123 will not restrict the movement of the first plate 121. Therefore, the resistance that the first board body 121 of the circuit board 120 receives during the sliding process is also relatively small. It can be seen that the aforementioned camera module 100 has high reliability while realizing optical anti-shake.

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

一种电路板及摄像头模组，电路板的第一板体在驱动力的作用下可滑动，从而带动感光芯片相对于镜头组件发生位移，实现光学防抖。电路板第二板体的输出引脚可与移动终端的主板进行电连接，而第二板体固定于底座。第一板体移动时，第二板体的位置可保持固定，故第二板体与主板之间也不会产生拉扯。因此，有效地避免了各连接处因受到拉扯力而松动。进一步的，连接件可随第一板体的移动发生形变，故不会对第一板体的移动造成限位。因此，电路板的第一板体在滑动过程中受到的阻力也较小。可见，上述摄像头模组在实现光学防抖的同时，还具有较高的可靠性。

Description

电路板、摄像头模组及移动终端 技术领域
本发明涉及光学成像技术领域，特别涉及一种电路板、摄像头模组及移动终端。
背景技术
光学防抖是被广泛认可的一种防抖技术，它通过可移动式的部件，对发生震动的光路进行补偿，从而达到减轻照片模糊程度的效果。光学防抖技术主要分为两大类，分别是镜片移动式光学防抖，以及感光芯片移动式光学防抖。
镜片移动式光学防抖结构复杂，一般不适合应用在移动终端的摄像头模组上。因此，感光芯片移动式光学防抖受到越来越多的重视。感光芯片移动式光学防抖的核心原理是，在驱动力的作用下，使得感光芯片能够发生位移，从而补偿因抖动而造成的镜头光轴的偏移。
感光芯片需要与移动终端的主板连接。感光芯片移动时，由于产生相对运动会受到主板的拉扯。在拉扯力的作用下，容易导致各连接处发生松动。而且，移动过程中受到阻力也更大。因此，在实现感光芯片移动式光学防抖时，现有摄像头模组的可靠性不高。
发明内容
根据本申请的各种实施例，提供一种电路板、摄像头模组及移动终端。
一种电路板，应用于摄像头模组，包括：
第一板体，其表面设置有感光芯片；及
第二板体，设置有输出引脚，
连接件，连设于所述第二板体与所述第一板体之间，且在所述第一板体和所述第二板体相对彼此靠近或远离时，所述连接件的至少一部分发生形变。
一种摄像头模组，包括：
底座；
安装有镜头组件的镜头载体，安装于所述底座；及
如上述优选实施例中任一项所述的电路板，所述第一板体背向所述感光芯片的一侧可滑动第安装于所述底座，所述第二板体固定于所述底座，所述第一板体设置于所述镜头组件与所述底座之间，且所述第一板体垂直于所述镜头组件的光轴设置。
一种移动终端，其特征在于，包括如上述实施例中任一项所述的摄像头模组。
本发明的一个或多个实施例的细节在下面的附图和描述中提出。本发明的其他特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
图1为本发明较佳实施例中摄像头模组的结构示意图；
图2为图1所示摄像头模组的爆炸图；
图3为图1所示摄像头模组的剖视图；
图4为图1所示摄像头模组中电路板的结构示意图。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳的实施例。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本发明的公开内容的理解更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1，本发明提供了一种电路板120及摄像头模组100。本发明还相应提供包括该摄像头模组100的移动终端。借助该摄像头模组100，移动终端可以实现拍摄功能。移动终端可以为手机、PAD及相机等电子产品。
请一并参阅图2及图3，本发明较佳实施例中的摄像头模组100包括底座110、电路板120、镜头载体130及镜头组件140。
底座110起承载作用，一般由金属材料一体成型。根据摄像头模组100 不同的造型需求，底座110的外部轮廓可相应呈圆形、矩形等各种形状。镜头载体130安装于底座110，并使得镜头组件140与底座110之间形成有用于防止电路板120的空间。镜头组件140一般由多块焦距不同的镜片层叠形成，其光轴一般与镜头组件140中轴线重合，对于圆形的镜片而言，光轴穿过其圆心。
请一并参阅图4，电路板120一般为PCB板，其上集成有众多电子元件。其中，电路板120包括第一板体121、第二板体123及连接件125。
其中，第一板体121及第二板体123可以看作是将普通电路板切割而成的两部分，其上分别集成有电子元件。但是，连接件125使得第一板体121及第二板体123在功能上仍构成一个整体。具体的，第一板体121上设置有感光芯片127。感光芯片127用于将光线转化成电信号，以实现成像。第二板体123设置有输出引脚(图未示)，用于与移动终端的主板实现电连接。
为了提升感光芯片127的成像效果，在本实施例中，摄像头模组100还包括可滤除不可见光的滤光片150，滤光片150覆设于感光芯片127的表面。具体的，滤光片150可为蓝玻璃，用于滤除不可见光，可避免干扰，从而防止在图像上生成噪点。
此外，为了感测摄像头模组100的抖动并实现防抖，电路板120上还可集成陀螺仪(图未示)、驱动芯片(图未示)及驱动机构(图未示)等。陀螺仪检测到抖动并将抖动程度量化，驱动芯片根据抖动量产生驱动电流，驱动机构在驱动电流的作用下执行抖动补偿。
连接件125连设于第二板体123与第一板体121之间，且在第一板体121和第二板体123相对彼此靠近或远离时，连接件125的至少一部分发生形变。也就是说，第二板体123与第一板体121之间可彼此单独运动而互不干扰。
进一步的，第一板体121背向感光芯片127的一侧可滑动地安装于底座110，第二板体123固定于底座110。而且，第一板体121设置于镜头组件140与底座110之间，且第一板体121垂直于镜头组件140的光轴设置。光线可经镜头组件140进入感光芯片127，实现成像。具体的，第一板体121可沿垂直于镜头组件140光轴的方向滑动。驱动机构执行抖动补偿时，将驱动第一板体121沿垂直于镜头组件140光轴的方向滑动，从而带动第一板体123上的感光芯片127移动，以补偿镜头组件140光轴的偏差，实现感光芯片移动式光学防抖。
由于感光芯片127随第一板体121运动，故两者之间不会产生相对移动。感光芯片127与电路板120之间便不会发生拉扯，有效地避免了连接处松动。而且，第二板体123固定于底座110。第一板体121移动时，第二板体123的位置可保持固定，故第二板体123与主板之间也不会产生拉扯，输出引脚与主板之间的连接处也不会发生松动。而且，第二板体123也并不会对第一板体121的移动造成限位。因此，第一板体121在滑动过程中受到的阻力也较小。
连接件125的形式可以是多种，只要能实现将第二板体123与第一板体121链接为一体，并使两者可独立移动即可。譬如：
具体在本实施例中，连接件125为柔性连接件，第一板体121和第二板体123相对彼此靠近或远离时，柔性连接件弯曲度发生改变。
柔性连接件可以是排线、银丝等具有较好可挠性并可导电的结构，可在挤压、拉扯作用下变形。具体的，柔性连接件的长度大于初始状态下第一板体121与第二板体123之间的间距d。因此，柔性连接件会发生弯折。随着第一板体121移动，柔性连接件可逐步展开，弯曲度变小，故不会对第一板 体121造成牵扯。因此，第一板体121与第二板体123之间发生相对移动时，阻力较小。
进一步的，在本实施例中，柔性连接件为多个并列且间隔设置的柔性线缆，每个柔性线缆的一端电连接于第一板体121，每个柔性线缆的另一端电连接于第二板体123。
具体的，多个相互分立的柔性线缆实现第一板体121与第二板体123的电连接，故单个柔性线缆的线径可设置较小，其可挠性较佳。第一板体121与第二板体123相互靠近或远离时，柔性线缆可折叠或展开，其阻力较小。而且，当第一板体121与第二板体123彼此横向错开(即，第一板体121与第二板体123在与柔性线缆的延伸方向垂直的方向上相对移动)时，由于柔性线缆较软，故对第一板体121的阻碍作用也很小。因此，可使第一板体121在各个方向移动时受到的阻力均较小。
需要指出的是，在其他实施例中，柔性连接件也可是其他柔性构件。譬如，柔性连接件还可以为软板。
在另一个实施例中，连接件125为可伸缩的弹性伸缩件，第一板体121相对第二板体123靠近或远离时，弹性伸缩件125发生弹性形变使自身长度改变。
具体的，弹性伸缩件可以是金属弹簧，也可是普通导线绕成的螺旋状结构。弹性伸缩件在自身长度变化后，会产生弹性回复力。如此，当防抖响应的作用力消失后，第一板体121将在弹性伸缩件的作用下实现自动复位。而且，由于螺旋状的结构可使导线有规律的置于第一板体121与第二板体123之间，从而还可避免摄像头模组100内部线材缠绕。
为了进一步减小第一板体121滑动过程中受到的阻力，在本实施例中， 摄像头模组100还包括设置于底座110的多个滚珠160，第一板体121背向感光芯片127的一侧承靠于多个滚珠111背向底座110的一侧。
滚珠160呈球形，可相对于底座110进行滚动。而且，滚珠160需具有较高的硬度而不易变形。具体的，滚珠160可以由金属、陶瓷、玻璃、蓝宝石等硬度较高的材料成型。
多个滚珠160的直径一般相同，可直接散布于底座110上。具体的，可在底座110上设置一平面，滚珠160直接置于该平面内并可在该平面内滚动。该平面的边缘设置有边界，以防止滚珠160滚动至该平面的范围之外。进一步的，通过第一板体121的压持作用将滚珠160限位于底座110。此外，底座110上还可形成槽、孔、套筒等收容结构用于收纳滚珠160，以避免滚珠散落，从而便于装配并提升摄像头模组100可靠性。
其中，第一板体121背向感光芯片127的一侧承靠于多个滚珠160背向底座110的一侧。也就是说，第一板体121与底座110之间由多个滚珠160实现支撑，两者之间为点接触。此时，多个滚珠160可共同限定一与多个滚珠160均相切的滑动平面(图未示)，第一板体121可沿滑动平面滑动。由于三点确定一个平面。因此，滚珠160的数量至少为三个。
由于第一板体121与滚珠160之间为点接触，而电第一板体121滑动时，滚珠160在摩擦力的作用下也会相对于底座110发生滚动。因此，第一板体121在滑动过程中受到的摩擦力为较小的滚动摩擦。所以，只需较小的驱动力即可驱动电路板120滑动，故防抖响应迅速、灵敏度更高且能耗较低。
而且，滚珠160虽然会随第一板体121滑动而进行滚动。但是，滚珠160的表面为球面，其滚动并不会造成其限定的滑动平面的高度波动。因此，第一板体121滑动时也将始终保持在同一个平面，即平面度也更好。
需要指出的是，在其他实施例中，第一板体121也可通过悬线吊装、电驱支架等方式可滑动地安装于底座110上。
进一步的，本实施例中的像头模组100还包括限位作用件170。限位作用件170用于对第一板体121提供一指向滚珠160的作用力。该作用力对第一板体121可使第一板体121始终与滚珠160保持接触。否则，第一板体121与滚珠160之间将无法形成稳定的支撑，在抖动或翻转时，第一板体121将与滚珠160分离。
限位作用件170提供的作用力可以是压力，也可以是拉力；限位作用件170可以直接对第一板体121接触施力，也可以非接触施力。限位作用件170的形式可以是多种，只要不对第一板体121的滑动造成干扰即可。
进一步的，在本实施例中，限位作用件170为设置于底座110上的磁铁，第一板体121上设置有可供磁铁吸附的铁磁件129。
铁磁件129可以是铁、镍、钴成型的构件，通过磁铁与铁磁件129相吸附，从而对第一板体121产生一指向滚珠160的拉力。而且，通过磁铁的吸附作用，限位作用件170对第一板体121为非接触式施力。因此，第一板体121并不会受到来自限位作用件170的摩擦力，故第一板体121的滑动阻力更小。
而且，由于磁铁在磁场始终保持固定。因此，当铁磁件129因随第一板体121滑动而偏离初始位置后，磁铁对铁磁件129的吸附力将使铁磁件129具有复位的趋势。也就是说，当抖动消除而作用于第一板体121的驱动力消失后，第一板体121还可在铁磁件129的带动下自动复位。
需要指出的是，在其他实施例中，限位作用件170还可以为其他形式。譬如：
限位作用件170可以是被拉伸的弹性绳，其一端固定于底座110，另一端固定于第一板体121。通过弹性绳的拉力，也可对第一板体121施加一指向滚珠160的作用力。而且，当抖动消除而作用于第一板体121的驱动力消失后，弹性绳也可拉动第一板体121自动复位。又譬如：
限位作用件170还可以是套筒、弹簧及滚球(与滚珠160结构可以相同)共同构成的结构。其中，弹簧及滚球收容于套筒内，弹簧压缩对滚球产生作用力。套筒指向第一板体121背向滚珠160的表面(即，图中所示上表面)，且滚球与上表面抵接。在弹簧弹性力的作用下滚球对第一板体121施加一指向滚珠160的作用力。此时，第一板体121的上下表面均为滚动支撑，故不影响其滑动。
在本实施例中，镜头载体130为音圈马达。镜头载体130包括壳体131及安装于壳体131内且相对于壳体131沿镜头组件140的光轴方向可移动的活动载体133，镜头组件140安装于活动载体133，壳体131安装于底座110。
具体的，壳体131一般还集成有线圈、磁铁，线圈通电后，线圈与磁铁之间将产生电磁作用力。该电磁作用力将驱动活动载体133移动，从而实现摄像头模组100自动变焦。
进一步的，在本实施例中，镜头载体130还具有由壳体131靠近所述底座110一端朝向底座110所在一侧延伸而出的引脚135，引脚135与第二板体123上的焊盘焊接。
具体的，引脚135可通过焊锡膏焊接于第二板体123，从而将音圈马达与电路板120实现电连接。因此，音圈马达可接受经电路板120发出的电流信号，实现自动变焦。同时，引脚135还可起到将第二板体123固定于底座110的作用，从而无需额外在第二板体123与底座110之间设置固定结构。
在另一个实施例中，引脚135与第二板体123上的焊盘通过导电胶粘接。导电胶亦可实现音圈马达与电路板120之间电连接，并对第二板体123起到固定作用。而且，组装时无需对电路板120进行焊接，操作更方便。
请再次参阅图2，在本实施例中，摄像头模组100还包括一端连接于镜头载体130，另一端连接于电路板第一板体121的悬线180，且悬线180沿其延伸方向可弹性拉伸。
具体的，悬线180一般为多个，且一端一般连接于第一板体121的边缘。针对矩形的第一板体121而言，4个悬线180分别连接于第一板体121的四个顶角。悬线180可以为常见的弹性绳，故可被弹性拉伸并恢复形变。初始状态时，悬线180可处于自然状态或被拉伸状态。
第一板体121偏移初始位置时，悬线180将被弹性拉伸，故可对第一板体121提供一定的拉力。因此，在不发生防抖响应时，悬线180可以防止第一板体121随机运动。而发生防抖响应时，悬线180还可对第一板体121起到牵引作用。
上述摄像头模组100，电路板120的第一板体121在驱动力的作用下可相对于底座110滑动，从而带动感光芯片127相对于镜头组件140发生位移，以补偿因抖动而造成的镜头组件140的光轴偏移，实现光学防抖。由于感光芯片127集成于电路板120的第一板体121并随之运动，故两者之间不会产生相对移动。而且，电路板120第二板体123的输出引脚可与移动终端的主板进行电连接，而第二板体123固定于底座110。第一板体121移动时，第二板体123的位置可保持固定，故第二板体123与主板之间也不会产生拉扯。因此，有效地避免了各连接处因受到拉扯力而松动。而且，第二板体123不会对第一板体121的移动造成限位。因此，电路板120的第一板体121在滑 动过程中受到的阻力也较小。可见，上述摄像头模组100在实现光学防抖的同时，还具有较高的可靠性。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种电路板，应用于摄像头模组，其特征在于，包括：
    第一板体，其表面设置有感光芯片；及
    第二板体，设置有输出引脚，
    连接件，连设于所述第二板体与所述第一板体之间，且在所述第一板体和所述第二板体相对彼此靠近或远离时，所述连接件的至少一部分发生形变。
  2. 根据权利要求1所述的电路板，其特征在于，所述连接件为柔性连接件，所述第一板体和所述第二板体相对彼此靠近或远离时，所述柔性连接件弯曲度发生改变。
  3. 根据权利要求2所述的电路板，其特征在于，所述柔性连接件为多个并列且间隔设置的柔性线缆，每个所述柔性线缆的一端电连接于所述第一板体，每个所述柔性线缆的另一端电连接于所述第二板体；或者
    所述柔性连接件为电连接所述第一板体及所述第二板体的软板。
  4. 根据权利要求1所述的电路板，其特征在于，所述连接件为可伸缩的弹性伸缩件，所述第一板体相对所述第二板体靠近或远离时，所述弹性伸缩件发生弹性形变使自身长度改变。
  5. 一种摄像头模组，其特征在于，包括：
    底座；
    安装有镜头组件的镜头载体，安装于所述底座；及
    如上述权利要求1-4任意一项所述的电路板，所述第一板体背向所述感光芯片的一侧可滑动地安装于所述底座，所述第二板体固定于所述底座，所 述第一板体设置于所述镜头组件与所述底座之间，且所述第一板体垂直于所述镜头组件的光轴设置。
  6. 根据权利要求5所述的摄像头模组，其特征在于，所述镜头载体包括壳体及安装于所述壳体内且相对于所述壳体沿所述镜头组件的光轴方向可移动的活动载体，所述镜头组件安装于所述活动载体，所述壳体安装于所述底座。
  7. 根据权利要求6所述的摄像头模组，其特征在于，所述镜头载体还具有由所述壳体延伸而出引脚，所述引脚与所述第二板体上的焊盘焊接。
  8. 根据权利要求6所述的摄像头模组，其特征在于，所述镜头载体还具有由所述壳体延伸而出引脚，所述引脚与所述第二板体上的焊盘通过导电胶粘接。
  9. 根据权利要求5所述的摄像头模组，其特征在于，还包括设置于所述底座的多个滚珠，所述第一板体背向所述感光芯片的一侧承靠于所述多个滚珠背向所述底座的一侧。
  10. 一种移动终端，其特征在于，包括如上述权利要求5至9任一项所述的摄像头模组。
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