Camera module having MEMS actuator, connecting method for shutter coil of camera module and camera module manufactured by the same method

• US 8,970,781 B2
• Filed: 05/20/2011
• Issued: 03/03/2015
• Est. Priority Date: 05/20/2010
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Ryou, Chungsang
• Primary Examiner(s): CHEN, CHIA WEI A
• Application Number:
  US13/698,218
• Publication Number:
  US 20130057757A1
• Time in Patent Office: 1,383 Days
• Field of Search: 3482081-20899, 348373-376, 348345-357
• US Class Current: 348/374
• CPC Class Codes: B81B 7/0006 Interconnects
• CPC Class Codes: B81B 7/007 Interconnections between the MEMS and external electrical signals
• CPC Class Codes: B81B 7/02 containing distinct electrical or optical devices of particular relevance for their function, e.g. microelectro-mechanical systems [MEMS] B81B7/04 takes precedence
• CPC Class Codes: G02B 7/08 adapted to co-operate with a remote control mechanism
• CPC Class Codes: G03B 2205/0084 using other types of actuators
• CPC Class Codes: G03B 3/10 Power-operated focusing
• CPC Class Codes: G03B 9/08 Shutters
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Abstract

Disclosed is a camera module including a substrate which is provided with an electrode pad and an image sensor; a housing which is stacked on the substrate and of which an upper portion is opened so that light is incident to the image sensor; a MEMS actuator which is installed at the housing and has an electrode terminal at one side thereof, and a conductive pattern which is formed at the housing, wherein a lower end of the conductive pattern is connected with the electrode pad of the substrate, and an upper end thereof is connected with the electrode terminal of the MEMS actuator, whereby it is possible to improve electrical reliability between the electrode terminal of the MEMS actuator and the electrode pad of the substrate and facilely form the electrical connection therebetween, thereby reducing the number of processes.

Claims

1. A camera module comprising:

a substrate including an electrode pad;

an image sensor disposed on the substrate;

a housing including a holder disposed on the substrate and a lens barrel comprising at least one lens, the lens barrel being coupled to the holder;

a micro electromechanical systems (MEMS) actuator disposed on the housing and including an electrode terminal; and

a conductive pattern formed at the housing,

wherein one end of the conductive pattern is electrically connected to the electrode pad and the other end of the conductive pattern is electrically connected to the electrode terminal,

wherein the conductive pattern includes a first pattern and a second pattern, and

wherein the first pattern is formed on an inner surface of the holder and the second pattern is formed on an outer surface of the lens barrel.

2. The camera module according to claim 1, wherein one end of the first pattern is electrically connected to the electrode pad and one end of the second pattern is electrically connected to the electrode terminal of the MEMS actuator.

3. The camera module according to claim 1, wherein the electrode pad of the substrate comprises two terminals, and the conductive pattern electrically connects the electrode pad and the electrode terminal.

4. The camera module according to claim 3, wherein the electrode pad is formed at a side surface of the substrate, and opposite terminals has the same polarity.

5. The camera module according to claim 1, wherein an extended portion is formed at an upper end of the lens barrel so as to be contacted with the electrode terminal of the MEMS actuator, and the second pattern is extended to an upper surface of the extended portion.

6. The camera module according to claim 1, wherein the MEMS actuator has an opening for fixing a moving lens.

7. The camera module according to claim 1, wherein the one end of the first pattern is bonded to the electrode pad by a conductive adhesive.

8. The camera module according to claim 1, wherein the one end of the second pattern is bonded to the MEMS actuator by a conductive adhesive.

9. The camera module according to claim 1, further comprising:

a shutter disposed on the MEMS actuator,

wherein a shutter coil extended from the shutter is welded to an output terminal pad formed at the substrate.

10. The camera module according to claim 9, wherein the shutter coil and the output terminal pad are respectively provided in a pair so as to be corresponding to a positive pole and a negative pole.

11. The camera module according to claim 10, wherein the shutter coil is welded by a welding machine.

12. A phone having a camera module of claim 1.