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CN-122029828-A - Camera module and electronic equipment

CN122029828ACN 122029828 ACN122029828 ACN 122029828ACN-122029828-A

Abstract

The application provides a camera module and electronic equipment. The camera shooting module comprises a voice coil motor, a lens, a module circuit board and an image sensor, wherein the voice coil motor comprises a base, a driving mechanism and a shell, the lens is installed on the driving mechanism, the driving mechanism is connected with the base, the base and the image sensor are both arranged on the module circuit board, the image sensor is located on the light emitting side of the lens, the shell is fixed on the base and covers at least part of the driving mechanism, the base comprises a plastic part and a metal part, the metal part is fixed on the plastic part, the shell comprises a metal part, the metal part is fixedly connected with the metal part, and the metal part is electrically connected with a grounding pin of the module circuit board. On one hand, the shell of the application can avoid the whole nickel plating, and the shell can not generate magnetic interference on the magnetic part of the voice coil motor, on the other hand, the metal part of the shell of the application can be grounded through the metal part, thereby avoiding the radio frequency interference and electrostatic interference on the camera module caused by other parts of the electronic equipment.

Inventors

  • HOU QING
  • LIU BIN
  • LI DENGFENG
  • ZHANG BAILIANG
  • WAN YULIN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20240830
Priority Date
20230918

Claims (20)

  1. An image pickup module (100) is characterized by comprising a voice coil motor (1), a lens (2), a module circuit board (3) and an image sensor (4); The voice coil motor (1) comprises a base (10), a driving mechanism (20) and a shell (30), wherein the lens (2) is installed on the driving mechanism (20), the driving mechanism (20) is connected with the base (10), the base (10) and the image sensor (4) are both arranged on the module circuit board (3), the image sensor (4) is positioned on the light emitting side of the lens (2), and the shell (30) is fixed on the base (10) and covers at least part of the driving mechanism (20); the base (10) comprises a plastic part (11) and a metal part (12), and the metal part (12) is fixed on the plastic part (11); The shell (30) comprises a metal part (36), the metal part (36) is fixedly connected with the metal piece (12), and the metal piece (12) is electrically connected with the grounding pin (3 a) of the module circuit board (3).
  2. The camera module (100) of claim 1, wherein the metal portion (36) is fixedly connected to the metal piece (12) by laser welding.
  3. The camera module (100) according to claim 2, wherein the housing (30) includes a top plate (31) and a side frame (32), the side frame (32) being connected to a periphery of the top plate (31); a bump (35) is arranged on the surface of the side frame (32) far away from the top plate (31), and the bump (35) forms at least part of the metal part (36).
  4. A camera module (100) according to claim 3, wherein the metal piece (12) comprises a fixing area (121) and a first connection area (122), the first connection area (122) being connected to the periphery of the fixing area (121); the fixing area (121) is fixed on the plastic part (11), the first connecting area (122) extends out relative to the side face (111) of the plastic part (11), and the first connecting area (122) is fixedly connected with the protruding block (35) through laser welding.
  5. The camera module (100) according to claim 4, wherein the metal piece (12) further comprises a second connection region (123), the second connection region (123) is connected to the periphery of the fixing region (121) and is spaced from the first connection region (122), and the second connection region (123) is exposed opposite to the side surface (111) of the plastic piece (11); the second connecting area (123) is fixedly connected with the grounding pin (3 a) of the module circuit board (3) through soldering.
  6. The camera module (100) according to claim 5, wherein the second connection area (123) is bent away from the module circuit board (3) and is fixed to a side surface (111) of the plastic member (11).
  7. The camera module (100) according to any one of claims 1 to 6, wherein the voice coil motor (1) further comprises a buffer member (34), and the buffer member (34) is made of an insulating material; The buffer member (34) is connected to the inner surface of the housing (30), and the buffer member (34) is disposed opposite to the driving mechanism (20).
  8. The camera module (100) of claim 7, wherein the buffer (34) is formed as an integral structure with the housing (30) by an injection molding process.
  9. The camera module (100) according to any one of claims 1 to 8, wherein the camera module (100) comprises an electronic component (5), the electronic component (5) being fixed to the module circuit board (3) and being electrically connected to the module circuit board (3); At least part of the metal piece (12) is exposed relative to the bottom surface (113) of the plastic piece (11) and is fixed on the module circuit board (3), and part of the metal piece (12) surrounds the electronic component (5).
  10. The camera module (100) according to claim 9, wherein the electronic component (5) comprises a driving chip (5 a), the driving chip (5 a) is electrically connected with the voice coil motor (1) through the module circuit board (3), and the driving chip (5 a) is used for calculating anti-shake data of the voice coil motor (1), and/or calculating focusing data, and/or controlling current conditions.
  11. The camera module (100) according to any one of claims 1 to 10, wherein the driving mechanism (20) includes an anti-shake mount (213), a first anti-shake coil (2111), a first anti-shake magnetic element (2112), a second anti-shake coil (2113), and a second anti-shake magnetic element (2114); The first anti-shake magnetic member (2112) and the second anti-shake magnetic member (2114) are fixed to the anti-shake bracket (213) at intervals; The anti-shake support (213) is movably connected with the plastic part (11), the first anti-shake coil (2111) and the second anti-shake coil (2113) are fixed on the plastic part (11) at intervals, the first anti-shake coil (2111) faces the first anti-shake magnetic part (2112) and is used for driving the anti-shake support (213) to move along a first direction relative to the base (10), the second anti-shake coil (2113) faces the second anti-shake magnetic part (2114) and is used for driving the anti-shake support (213) to move along a second direction relative to the base (10), and the second direction intersects with the first direction; The driving mechanism (20) further comprises a focusing support (21), a focusing magnetic piece (222) and a focusing coil (221), the focusing support (21) is located on the inner side of the anti-shake support (213), the focusing magnetic piece (222) is fixed on the focusing support (21), the focusing coil (221) is fixed on the anti-shake support (213) and faces the focusing magnetic piece (222) and is used for driving the focusing support (21) to move along the third direction relative to the anti-shake support (213), and the third direction is intersected with the second direction and the first direction.
  12. The camera module (100) of claim 11, wherein the drive mechanism (20) further comprises a guide bracket (212), the guide bracket (212) being L-shaped; the guide bracket (212) comprises a first supporting part (2121), a first connecting part (2122), a second supporting part (2123), a second connecting part (2124) and a third supporting part (2125) which are sequentially connected, wherein the first supporting part (2121), the second supporting part (2123) and the third supporting part (2125) are connected with the plastic piece (11) through a plurality of first supporting pieces (214) and are connected with the anti-shake bracket (213) through a plurality of second supporting pieces (215), so that the relative movement direction of the anti-shake bracket (213) and the guide bracket (212) is different from the relative movement direction of the guide bracket (212) and the base (10); The first connecting portion (2122) and the second connecting portion (2124) are made of a metal material.
  13. The camera module (100) of claim 12, wherein the guide bracket (212) includes a metal skeleton (212 a), a first plastic block (212 b), a second plastic block (212 c), and a third plastic block (212 d); The metal framework (212 a) is L-shaped, the metal framework (212 a) comprises a first long strip section (2121 a) and a second long strip section (2122 a), and a second end (2124 a) of the first long strip section (2121 a) is connected with a first end (2125 a) of the second long strip section (2122 a); The first plastic block (212 b) wraps around the first end (2123 a) of the first elongated segment (2121 a), the second plastic block (212 c) wraps around the second end (2124 a) of the first elongated segment (2121 a) and the first end (2125 a) of the second elongated segment (2122 a), and the third plastic block (212 d) wraps around the second end (2126 a) of the second elongated segment (2122 a); The first end (2123 a) of the first long strip section (2121 a) of the metal framework (212 a) and the first plastic block (212 b) form a first supporting part (2121) of the guide bracket (212), the second end (2124 a) of the first long strip section (2121 a) of the metal framework (212 a), the first end (2125 a) of the second long strip section (2122 a) and the second plastic block (212 c) form a second supporting part (2123) of the guide bracket (212), the second end (2126 a) of the second long strip section (2122 a) of the metal framework (212 a) and the third plastic block (212 d) form a third supporting part (2125) of the guide bracket (212), the middle part of the first long strip section (2121 a) of the metal framework (212 a) forms a first connecting part (2122) of the guide bracket (212), and the middle part of the second long strip section (2122 a) of the metal framework (212 a) forms a second supporting part (2124) of the guide bracket (212).
  14. The camera module (100) according to any one of claims 11 to 13, wherein the anti-shake support (213) comprises an insulating body (2131) and a metal insert (2132), the metal insert (2132) being embedded within the insulating body (2131); The metal insert (2132) is grounded.
  15. The camera module (100) according to claim 14, wherein the driving mechanism (20) includes a focusing circuit board (2231) and a focusing driving chip (2232), the focusing coil (2221) and the focusing driving chip (2232) are fixed to the focusing circuit board (2231), and the focusing circuit board (2231) is fixed to the anti-shake bracket (213); The anti-shake support (213) comprises a first conductive piece (2138 a), the first conductive piece (2138 a) is embedded in the insulating body (2131), and the first conductive piece (2138 a) is electrically connected with a power negative electrode of the focusing driving chip (2232) through the focusing circuit board (2231); the metal insert 2132 is electrically connected with the first conductive element (2138 a).
  16. The camera module (100) of claim 15, wherein a surface of the metal insert (2132) is provided with protruding bumps (2132 c), the first conductive element (2138 a) is provided with recessed areas (2138 e), and the protruding bumps (2132 c) are located in the recessed areas (2138 e) and contact walls of the recessed areas (2138 e).
  17. The camera module (100) according to claim 15 or 16, wherein the anti-shake support (213) further comprises a second conductive member (2138 b), the second conductive member (2138 b) is embedded in the insulating body (2131), and the second conductive member (2138 b) is electrically connected to a power supply positive electrode of the focus driving chip (2232) through the focus circuit board (2231); The anti-shake support (213) is provided with a first communication hole (127 a), the first communication hole (127 a) is communicated with the inside and the outside of the anti-shake support (213), and a first end (128 a) of the first conductive member (2138 a) and a first end (128 b) of the second conductive member (2138 b) extend into the first communication hole (127 a); The hole wall of the first communication hole (127 a) is provided with a first isolation groove (131), and the first isolation groove (131) is positioned between the first end (128 a) of the first conductive piece (2138 a) and the first end (128 b) of the second conductive piece (2138 b).
  18. The imaging module (100) according to any one of claims 14 to 17, wherein the metal insert (2132) is a magnetically permeable material, and the first anti-shake magnetic element (2112) and the second anti-shake magnetic element (2114) are disposed opposite the metal insert (2132).
  19. The camera module (100) according to any one of claims 11 to 18, wherein the anti-shake mount (213) is connected to the focus mount (21) by a plurality of third supports (224); The third support piece (224) comprises a shaft body (2241) and a protrusion (2242), the protrusion (2242) is convexly arranged on a first end face (2244) of the shaft body (2241), a part of the peripheral side face of the shaft body (2241) is fixedly connected with the anti-shake support (213), and the protrusion 2242 is inserted into a fixing hole (2137) of the anti-shake support (213).
  20. The camera module (100) according to claim 19, wherein the module circuit board (3) is provided with a first avoidance space (3 b), and an opening of the first avoidance space (3 b) is located on a surface of the module circuit board (3) facing the base (10); The anti-shake support (213) comprises a fixing part (126), and the fixing hole (2137) is positioned on the fixing part (126); The metal piece (12) comprises a sinking part (124), the sinking part (124) is opposite to the fixing part (126), the sinking part (124) is sunk to the first avoidance space (3 b) and is positioned in the first avoidance space (3 b), the sinking part (124) encloses a second avoidance space (125), and at least part of the fixing part (126) is positioned in the second avoidance space (125).

Description

Camera module and electronic equipment The present application claims priority from the chinese patent application filed by the chinese national intellectual property agency, application number 202311203807.0, at month 9 of 2023, and the priority from the chinese patent application entitled "camera module and electronic device", the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of imaging technologies, and in particular, to an imaging module and an electronic device. Background Along with the gradual strong shooting function of a camera of a smart phone, each large manufacturer puts forward a more severe requirement on the imaging quality of a camera module. The conventional camera module includes a housing, a voice coil motor, and a module circuit board. The voice coil motor is arranged on the module circuit board and is used for bearing the lens. The outer shell is welded on the module circuit board through soldering and covers the voice coil motor. However, to ensure that the housing can be tin plated during the soldering process, the surface of the housing needs to be electroplated with nickel. The entire surface of the housing is nickel plated due to the high cost of partial nickel plating on the housing. In this way, the nickel layer has weak magnetism, and attracts the magnet inside the voice coil motor, thereby generating magnetic interference. Disclosure of Invention The embodiment of the application aims to provide a camera module and electronic equipment, wherein the shell of the camera module is not easy to generate magnetic interference on a magnetic part of a voice coil motor, and the camera module can obtain better shooting experience. In a first aspect, the present application provides an image capturing module. The camera shooting module comprises a voice coil motor, a lens, a module circuit board and an image sensor; the voice coil motor comprises a base, a driving mechanism and a shell, the lens is arranged on the driving mechanism, the driving mechanism is connected with the base, the base and the image sensor are both arranged on a module circuit board, the image sensor is positioned on the light emitting side of the lens, the shell is fixed on the base, and at least part of the driving mechanism is covered; The base comprises a plastic part and a metal part, wherein the metal part is fixed on the plastic part, the shell comprises a metal part, the metal part is fixedly connected with the metal part, and the metal part is electrically connected with a grounding pin of the module circuit board. It can be appreciated that by fixing the metal piece on the plastic piece, the metal piece can improve the strength of the plastic piece. At this time, the overall strength of the base formed by the plastic part and the metal part is high. In one embodiment, the housing may be fixedly attached to the module circuit board directly by soldering. In the soldering process, nickel needs to be plated on the surface of the shell to ensure that the shell can be plated with tin in the soldering process, so that the connection reliability of the shell and the module circuit board is ensured. Because of the relatively high cost of plating nickel in localized areas of the housing, the entire housing is typically plated directly to reduce cost. However, after the housing is plated with nickel, the nickel may magnetically interfere with the magnetic element of the voice coil motor, thereby affecting the operation of the voice coil motor. In the present embodiment, the metal member is fixed to the plastic member, and the metal member is fixedly connected to the metal portion of the housing. At this point, the housing may not be entirely nickel plated. The shell can not generate magnetic interference on the magnetic part of the voice coil motor, and the cost input can not be increased due to nickel plating. In one embodiment, the housing may be fixedly attached to the module circuit board directly by soldering. It can be appreciated that the assembly difficulty of the housing and the module circuit board is high due to the smaller pin end area of the module circuit board. In the present embodiment, the metal member is fixed to the plastic member, and the metal member is fixedly connected to the metal portion of the housing. At this time, the size of metalwork can set up enough big according to the demand to guarantee that the shell can be more convenient with metalwork fixed connection, thereby solve the shell because of the problem that the pin end area of module circuit board is little is difficult to fixed connection. It is understood that the metal piece is electrically connected with the grounding pin of the module circuit board. At this time, the metal part of the outer shell is fixedly connected with the metal piece. Thus, the metal part of the shell can be connected to the grounding pin of the module circuit board through the me