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CN-111045278-B - Image pickup element driving mechanism, camera device, and electronic apparatus

CN111045278BCN 111045278 BCN111045278 BCN 111045278BCN-111045278-B

Abstract

Provided are a thin imaging element driving mechanism having a sensor shift structure, which can be mounted on a thin electronic device such as a smart phone, a camera device having such an imaging element driving mechanism, and an electronic device. The driving mechanism includes a coil portion for driving the imaging element assembly in the second axial direction or the third axial direction with respect to the fixing portion, and a magnet portion facing the coil portion, the coil portion is disposed on one of the imaging element assembly and the fixing portion, the magnet portion is disposed on the other of the imaging element assembly and the fixing portion, and the support mechanism supports the imaging element assembly so as to be movable with respect to the fixing portion.

Inventors

  • He Chudagui

Assignees

  • 新思考电机股份有限公司
  • 新思考电机有限公司

Dates

Publication Date
20260421
Application Date
20191012
Priority Date
20181012

Claims (10)

  1. 1. An image pickup device driving mechanism, comprising: A fixing portion, an image pickup device assembly that moves relative to the fixing portion, a driving mechanism, a supporting mechanism, a terminal, and a circuit board, wherein the terminal is composed of an FPC, and the circuit board is composed of an FPC; the image pickup device assembly has a rectangular image pickup device, wherein a normal direction of a light receiving surface of the image pickup device is a first axial direction, a direction orthogonal to the first axial direction is a second axial direction and a third axial direction, The driving mechanism includes a coil part for driving the image pickup device assembly in the second axial direction or the third axial direction with respect to the fixing part, a magnet part opposing the coil part, the coil part being disposed on the image pickup device assembly, The support mechanism supports the image pickup device assembly so as to be movable relative to the fixing portion; the fixing part comprises a box body fixedly arranged in the photographic device, wherein the box body is provided with a box body part which is square when seen from a first axis direction and a plate-shaped bottom plate which is square when seen from the first axis direction, the box body part is provided with a front side wall and four side walls, a lens driving mechanism which enables a lens of the photographic device to move towards the first axis direction is arranged on the rear side surface of the front side wall, the magnet part is fixed on a bottom surface part at the rear side of the lens driving mechanism, the image pickup element assembly is accommodated in a space formed by the rear end of the side wall of the box body part arranged at the outer side edge of the bottom plate, and the upper end sides of the four side walls of the box body part are designed to be different in section; The supporting mechanism is provided with a spring and a plurality of suspension wire components, wherein the spring and the terminals are formed into a sheet shape with four corners in a ring shape, a wide part is designed at the central part of each side, and holes for fixing the suspension wire components are designed at each corner; Holes for fixing the suspension wire members are respectively provided at four corners of the coil part or four corners of the image pickup element assembly; The front end of each suspension wire member is fitted into the hole in the spring and the terminal, and the rear end of each suspension wire member is fitted into the hole in the coil part or the imaging element assembly to fix the suspension wire member; each suspension wire member extends in the first axial direction, is connected to the case and the imaging element assembly, and is elastically supported by the spring; the suspension wire member is electrically connected to the terminal and the coil portion, but the suspension wire member is not electrically connected to the spring; The terminal has a coil connecting portion extending rearward in the first axial direction from the wide portions on opposite sides of one side, the coil connecting portion being exposed outward from the rear end of the case body portion, and the coil connecting portion being electrically connected to the coil portion; the coil part is supplied with power through the terminals and the suspension wire components; the circuit substrate is provided with a flat plate and side plates, the side plates are respectively erected from two opposite sides of the flat plate to the front side in the first axial direction, further, the side plates extend in the second axial direction and the third axial direction, and the end parts of the side plates are arranged on the inner side of the side wall of the box body part and are exposed outside; The image pickup device assembly is fixed to the front side surface of the flat plate, and is supplied with power through each of the side plates.
  2. 2. The image pickup device driving mechanism according to claim 1, wherein the coil portion has a first coil that drives the image pickup device assembly in the third axis direction with respect to the fixing portion, and a second coil that drives the image pickup device assembly in the second axis direction.
  3. 3. The image pickup element driving mechanism according to claim 2, wherein the first coil and the second coil are arranged at 90-degree intervals with respect to the image pickup element.
  4. 4. The image pickup element driving mechanism according to claim 2, wherein there are two of the first coils, the two first coils are arranged along the third axis direction, and the two second coils are arranged along the second axis direction.
  5. 5. The image pickup device driving mechanism according to claim 4, wherein the two first coils are arranged offset from each other in the second axis direction, and the two second coils are arranged offset from each other in the third axis direction.
  6. 6. The image pickup element driving mechanism according to claim 4, wherein the first coil is composed of a plurality of first small coils, The second coil is composed of a plurality of second small coils, A plurality of the first small coils of the first coil are arranged along the second axis direction, The plurality of second small coils of the second coil are arranged along the third axis direction.
  7. 7. The image pickup element driving mechanism according to claim 2, wherein the first coil and the second coil are wound around the first axis direction, The first coil is opposed to a magnetization surface of the magnet portion in the first axial direction, the magnetization surface opposed to the first coil is magnetized in the third axial direction at mutually different magnetic poles, The second coil is opposed to the magnetization surface of the magnet unit in the first axial direction, and the magnetization surface opposed to the second coil is magnetized in the second axial direction at mutually different magnetic poles.
  8. 8. The image pickup device driving mechanism according to claim 7, wherein the coil portion side is disposed on a surface facing a front side in the first axial direction or a surface facing a rear side of the image pickup device assembly.
  9. 9. A photographic apparatus comprising the image pickup device driving mechanism according to any one of claims 1 to 8.
  10. 10. An electronic apparatus comprising the imaging device driving mechanism according to any one of claims 1 to 8.

Description

Image pickup element driving mechanism, camera device, and electronic apparatus [ Field of technology ] The present invention relates to an imaging element driving mechanism used in electronic devices such as smart phones, a camera device equipped with the imaging element driving mechanism, and an electronic device. [ Background Art ] Not only the shake compensation of the camera device is realized by moving the lens, but also the sensor is shifted, and by this means, the image pickup element can be moved in a direction orthogonal to the incident direction of light. For example, a mechanism shown in patent document 1 is configured such that a1 st stage moving in an X-axis direction and a 2 nd stage moving in a Y-axis direction are superimposed in a Z-axis direction on a substrate. The substrate is fixed to the photo frame body, and the imaging device is fixed to the 2 nd stage. The 1 st stage and the 2 nd stage are driven by a transmission device using a piezoelectric element and a driving shaft. [ Prior Art literature ] [ Patent literature ] Japanese patent application laid-open No. 2004-274242 [ Invention ] [ Problem to be solved by the invention ] The structure shown in patent document 1 is generally a structure used for a digital camera, and has a large Z-direction thickness, and is difficult to be applied to a camera device mounted on a thin electronic device such as a smart phone. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a thin imaging element driving mechanism having a sensor shift system structure, which can be mounted on a thin electronic device such as a smart phone, a camera device and an electronic device on which such an imaging element driving mechanism is mounted. [ Technical solution ] An image pickup device driving mechanism having A fixing part, an image pickup element assembly moving relative to the fixing part, a driving mechanism and a supporting mechanism, The image pickup device assembly has a rectangular image pickup device, wherein a normal direction of a light receiving surface of the image pickup device is a first axial direction, a direction orthogonal to the first axial direction is a second axial direction and a third axial direction, The driving mechanism includes a coil portion for driving the image pickup device assembly in the second axial direction or the third axial direction with respect to the fixing portion, and a magnet portion facing the coil portion, The coil part is disposed on one of the imaging element assembly and the fixing part, The magnet part is arranged on the other of the imaging element assembly and the fixing part, The support mechanism supports the image pickup device assembly so as to be movable relative to the fixing portion. In one or more embodiments of the imaging element driving mechanism, the coil portion includes a first coil that drives the imaging element assembly in the third axis direction with respect to the fixing portion, and a second coil that drives the imaging element assembly in the second axis direction. In one or more embodiments of the imaging element driving mechanism, the first coil and the second coil are arranged at 90-degree intervals around the imaging element. In one or more embodiments of the imaging element driving mechanism, there are two first coils, the two first coils are arranged along the third axis direction, and there are two second coils, the two second coils are arranged along the second axis direction. In one or more embodiments of the imaging element driving mechanism, the two first coils are arranged offset from each other in the second axis direction, and the two second coils are arranged offset from each other in the third axis direction. In one or more embodiments of the imaging element driving mechanism, the first coil is composed of a plurality of first small coils, The second coil is composed of a plurality of second small coils, A plurality of the first small coils of the first coil are arranged along the second axis direction, The plurality of second small coils of the second coil are arranged along the third axis direction. In one or more embodiments of the imaging element driving mechanism, the first coil and the second coil are wound around the first axis direction, The first coil is opposed to a magnetization surface of the magnet portion in the first axial direction, the magnetization surface opposed to the first coil is magnetized in the third axial direction at mutually different magnetic poles, The second coil is opposed to the magnetization surface of the magnet unit in the first axial direction, and the magnetization surface opposed to the second coil is magnetized in the second axial direction at mutually different magnetic poles. In one or more embodiments of the imaging element driving mechanism, the first coil forms a coil with the third axis direction as a winding axis, The first coil is opposed to a m