Optical member driving module

• US 10,708,475 B2
• Filed: 01/28/2019
• Issued: 07/07/2020
• Est. Priority Date: 04/08/2016
• Status: Active Grant

• Current Assignee: Tdk Taiwan Corp. (TDK Corporation)
• Original Assignee: Tdk Taiwan Corp. (TDK Corporation)
• Inventors: Hu, Chao-Chang, Fan, Chen-Hsien
• Primary Examiner(s): Camargo, Marly S
• Application Number:
  US16/259,227
• Publication Number:
  US 20190158711A1
• Time in Patent Office: 526 Days
• Field of Search: 348308, 348335, 348360, 348373-376, 348126, 348133, 34820811, 257291, 257292, 257 28, 257 27, 257324, 257464, 257508, 257635, 396 91, 396133, 396219, 396529, 396444, 396535, 2502081, 359425, 359822-826
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils

Abstract

A camera module is provided, including a bottom, an electromagnetic driving assembly, and a lens assembly. The bottom includes a metal member, a first insulation layer formed on the metal member, and a first conductive layer formed on the first insulation layer. The first conductive layer is electrically connected to the electromagnetic driving assembly. The electromagnetic driving assembly can drive the lens assembly to move relative to the bottom.

Claims

1. An optical member driving module for driving an optical member having an optical axis, comprising:

a bottom, comprising a metal member and a conductive layer;

a holder, supporting the optical member and movably connected to the bottom;

a first driving assembly, driving the holder to move relative to the bottom, wherein the first driving assembly comprises a driving coil electrically connected to the conductive layer;

a housing, comprising an upper shell perpendicular to the optical axis and a side shell extending from the periphery of the upper shell along the optical axis;

a frame; and

a second driving assembly, driving the holder to move relative to the frame and electrically connected to the conductive layer, wherein the housing is affixed to the bottom via the side shell, the metal member has an opening and a surface, the optical axis passes through the opening, and the surface surrounds the opening.

2. The optical member driving module as claimed in claim 1, wherein the metal member has a lateral side corresponding to the side shell, and the surface is directly connected to the opening and the lateral side.

3. The optical member driving module as claimed in claim 2, wherein the housing comprises metal, and the metal member is affixed to the housing by welding.

4. The optical member driving module as claimed in claim 1, wherein the optical member driving module further comprises an image sensor corresponding to the optical member, and the metal member is disposed between the image sensor and the first driving assembly.

5. The optical member driving module as claimed in claim 1, wherein the optical member driving module further comprises a suspension wire, the frame is movably connected to the bottom via the suspension wire, and the holder is movably connected to the frame, wherein the metal member has a receiving portion for receiving the suspension wire.

6. The optical member driving module as claimed in claim 5, wherein suspension wire and the metal member are overlapped as observed from a direction perpendicular to the optical axis.

7. The optical member driving module as claimed in claim 5, wherein the surface is directly connected to the opening and the receiving portion.

8. The optical member driving module as claimed in claim 7, wherein the conductive layer is disposed on the metal member and electrically connected to the first driving assembly.