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US-20260126619-A1 - CAMERA MODULE

US20260126619A1US 20260126619 A1US20260126619 A1US 20260126619A1US-20260126619-A1

Abstract

Disclosed is a camera module. The camera module includes: a lens barrel disposed in a housing to receive a lens assembly, an elastic member in at least one of the housing and the lens barrel; a driving unit moving the lens barrel relative to the housing; and a sensor unit fixed to the housing.

Inventors

  • In Jae Yeo

Assignees

  • LG INNOTEK CO., LTD.

Dates

Publication Date
20260507
Application Date
20251231
Priority Date
20120629

Claims (20)

  1. 1 . A lens driving apparatus comprising: a first housing; a second housing, the first housing disposed on the second housing; a lens barrel disposed in the first housing; a first coil disposed around the lens barrel; a first magnet coupled to the first housing and facing the first coil in a first direction; a second coil disposed on the second housing and facing the first magnet in a second direction that is perpendicular to the first direction; and a first elastic member coupling an upper portion of the lens barrel and an upper portion of the first housing; wherein the first coil and the second coil share the first magnet, and wherein the lens driving apparatus is configured such that: the lens barrel is movable relative to the first housing by a first magnetic force between the first magnet and the first coil; and the first housing is movable relative to the second housing by a second magnetic force between the first magnet and the second coil.
  2. 2 . The lens driving apparatus according to claim 1 , the first housing comprises: a side plate that overlaps the first magnet in the first direction; an upper plate extending from the side plate, the upper plate having an overlapping portion with the first magnet in the second direction and a portion extending inward beyond an inner side surface of the first magnet so as to be non-overlapping with the first magnet in the second direction; and an opening located on a side of the first housing opposite to the upper plate in the second direction, the opening permitting the first magnet to face the second coil in the second direction.
  3. 3 . The lens driving apparatus according to claim 1 , wherein, measured in the first direction, a width of the first housing is smaller than a width of the second housing.
  4. 4 . The lens driving apparatus according to claim 1 , wherein the first magnet is coupled to an inner portion of the first housing.
  5. 5 . The lens driving apparatus according to claim 1 , wherein the first housing surrounds the lens barrel in the first direction.
  6. 6 . The lens driving apparatus according to claim 1 , wherein the first magnet is coupled to an inner side of the first housing.
  7. 7 . The lens driving apparatus according to claim 2 , wherein, measured in the first direction, a width of a lower surface of the first magnet is smaller than a width of the second coil.
  8. 8 . The lens driving apparatus according to claim 2 , wherein the upper plate of the first housing overlaps the second coil in the second direction.
  9. 9 . The lens driving apparatus according to claim 7 , wherein a height in the second direction of the inner side surface of the first magnet is greater than a height of the first coil in the second direction.
  10. 10 . The lens driving apparatus according to claim 9 , wherein the height in the second direction of the inner side surface of the first magnet is greater than the width in the first direction of the lower surface of the first magnet.
  11. 11 . The lens driving apparatus according to claim 2 , wherein the second coil includes a first portion that overlaps the side plate of the first housing in the second direction, a second portion that overlaps the first magnet in the second direction, and a third portion that overlaps the upper plate of the first housing in the second direction.
  12. 12 . The lens driving apparatus according to claim 2 , wherein the second housing overlaps the side plate and the upper plate of the first housing in the second direction.
  13. 13 . The lens driving apparatus according to claim 2 , comprising a second elastic member, wherein the second elastic member overlaps the second housing in the second direction, and wherein the second elastic member overlaps the side plate of the first housing in a direction that is perpendicular to the second direction.
  14. 14 . The lens driving apparatus according to claim 2 , wherein the first coil is disposed between the side plate of the first housing and the lens barrel in the first direction.
  15. 15 . The lens driving apparatus according to claim 7 , wherein the second coil is disposed between the lower surface of the first magnet and an upper surface of the second housing.
  16. 16 . The lens driving apparatus according to claim 1 , wherein the first magnet and the second coil are configured to move the first housing so that the lens barrel moves relative to the second housing.
  17. 17 . The lens driving apparatus according to claim 1 , wherein no other first magnet is disposed between the first magnet and the second coil in the second direction.
  18. 18 . The lens driving apparatus according to claim 2 , wherein the side plate of the first housing is extending from an end of the upper plate in the second direction.
  19. 19 . The lens driving apparatus according to claim 1 , comprising: a circuit board; an image sensor fixed to the circuit board; wherein the second housing is disposed between the first housing and the circuit board, and wherein the second housing is fixed to the circuit board.
  20. 20 . A camera module comprising the lens driving apparatus according to claim 1 .

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 18/334,807, filed Jun. 14, 2023; which is a continuation of U.S. application Ser. No. 17/807,809, filed Jun. 20, 2022, now U.S. Pat. No. 11,714,265, issued Aug. 1, 2023; which is a continuation of U.S. application Ser. No. 17/223,802, filed Apr. 6, 2021, now U.S. Pat. No. 11,391,917, issued Jul. 19, 2022; which is a continuation of U.S. application Ser. No. 16/523,635, filed Jul. 26, 2019, now U.S. Pat. No. 11,029,491, issued Jun. 8, 2021; which is a continuation of U.S. application Ser. No. 15/827,814, filed Nov. 30, 2017, now U.S. Pat. No. 10,412,284, issued Sep. 10, 2019; which is a continuation of U.S. application Ser. No. 14/411,788, filed Dec. 29, 2014, now U.S. Pat. No. 9,860,432, issued Jan. 2, 2018; which is the U.S. national stage application of International Patent Application No. PCT/KR2013/005777, filed Jun. 28, 2013; which claims priority to Korean Application No. 10-2012-0071201, filed Jun. 29, 2012; all of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD The embodiment relates to a camera module. BACKGROUND ART Recently, a camera module has been installed in a mobile communication terminal, an information technology (IT) device, such as a PDA or an MP3 player, a vehicle, and an endoscope. As the technology has been developed toward the high-pixel camera module from the conventional VGA camera equipped with 0.3 mega pixels, the camera module has been manufactured in a small size with a slim structure according to targets to which the camera module is installed. In addition, the camera module has been equipped with various additional functions, such as auto-focusing or optical zoom functions, at the low manufacturing cost. Meanwhile, the camera module manufactured in these days is equipped with an image sensor module, which is manufactured through a COB (chip of board) scheme, a COF (chip of flexible) scheme or a CSP (chip scale package) scheme, and is usually connected to a main substrate through an electric connection unit, such as a PCB (printed circuit board) or an FPCB (flexible printed circuit board). However, users recently request the camera module, which can be directly mounted on the main substrate similar to a general passive element, in such a manner that the manufacturing process for the camera module can be simplified while reducing the manufacturing cost. The camera module is generally manufactured by attaching an image sensor, such as a CCD or a CMOS, to a substrate through a wire bonding scheme or a flip chip scheme. An image of a subject is focused by the image sensor and the focused image is stored as data in a memory, which is installed inside or outside the camera module. In addition, the stored data are converted into electric signals and the electric signals are displayed as images through a display medium, such as an LCD or a PC monitor provided in a device. A camera module according to the related art includes a housing, an image sensor supported on a bottom of the housing to convert an image signal received through a lens into an electric signal, a lens group to focus an image signal of a subject to the image sensor, and a barrel in which the lens group are stacked. The housing, the lens group and the barrel are sequentially coupled with each other. In addition, an FPCB mounted thereon with chip components, which are electric components serving as a condenser and a resistor to drive the image sensor including a CCD or a CMOS, is electrically connected to the bottom of the housing. In the camera module having the above structure according to the related art, in a state that a plurality of circuit components have been mounted on the FPCB, an ACF (anisotropic conductive film) is inserted between the substrate and the image sensor, and heat and pressure are applied thereto in such a manner that the substrate, the image sensor and the ACF are fixedly bonded and conducted with each other and an IR cut-off filter is attached to an opposite side. In addition, in a state that the barrel provided therein with a plurality of lens groups is temporally screw-coupled with the housing, as described above, the assembled PCB used for mounting devices is fixedly bonded to the bottom of the housing by an adhesive. Meanwhile, after the PCB, to which the image sensor is attached, has been fixedly bonded to the housing coupled with the barrel, a focus adjustment is carried out with respect to a subject (resolution chart) located in front of the barrel and spaced apart from the barrel by a predetermined distance. At this time, the focus adjustment of the camera module can be achieved between the lens group and the image sensor while adjusting the vertical displacement by rotating the barrel screw-coupled with the housing. DISCLOSURE Technical Problem The embodiment provides a camera module capable of effectively inhibiting hand-shaking. Technical Solution Acco