Digital camera module and method for assembling the same

• US 7,697,056 B2
• Filed: 03/16/2007
• Issued: 04/13/2010
• Est. Priority Date: 11/27/2006
• Status: Expired due to Fees

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Huang, Shih-Lung
• Primary Examiner(s): Chan; Jason
• Assistant Examiner(s): Kao; Yih-Sien
• Application Number:
  US11/687,114
• Publication Number:
  US 20080122967A1
• Time in Patent Office: 1,124 Days
• Field of Search: 348/340, 348/373, 348/374
• US Class Current: 348/340
• CPC Class Codes: G02B 7/08 adapted to co-operate with a remote control mechanism
• 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

An exemplary digital camera module (200) includes a lens module (20), a chip package (30) and a focusing structure (40). The lens module includes a holder (24) and a barrel slidably received in the holder. At least one lens element (222) is fixed in the barrel. The holder has several channels (246) defined therein. Each channel respectively has an enlarged end opening (2468) and receives a corresponding wire (28) therein. The focusing structure is attached to the holder. Several pads (36) are formed on the surface of the chip package. Each wire electrically connects with a given pad using a conductive adhesive (52), and, via such a connection, the chip package is able to control the focusing structure to drive movement of the barrel. The respective enlarged end openings serve to help retain the corresponding conductive adhesive proximate/adjacent a given pad.

Claims

1. A digital camera module comprising:

a lens module comprising a holder, a barrel slidably received in the holder, and at least one lens element fixed in the barrel, the holder defining a plurality of channels therein, each channel defining an enlarged end opening;

a plurality of wires each received in a corresponding channel;

a focusing structure attached to the holder; and

a chip package comprising a plurality of pads formed on the surface thereof, the positions of the pads corresponding to the enlarged end openings of the channels;

wherein an amount of conductive adhesive is deposited on the pads and retained by the enlarged end openings of the channels, the lens module is attached to the chip package by means of the conductive adhesive, and each wire is electrically coupled to a corresponding pad so that the chip package is thereby configured for controlling the focusing structure to selectably drive movement of the barrel.

2. The digital camera module as claimed in claim 1, wherein the base has a plurality of recesses defined therein, and the pads are respectively received upon a corresponding recess.

3. The digital camera module as claimed in claim 2, wherein a corresponding air vent is defined beside a given recess and communicates the given recess to the ambient.

4. The digital camera module as claimed in claim 1, wherein the holder comprising a holder body and a flange, the flange includes a connecting board and a plurality of sidewalls, and the sidewalls are attached to the base.

5. The digital camera module as claimed in claim 4, wherein each channel respectively includes a horizontal hole and a vertical hole, each respective horizontal hole is defined in the connecting board, each respective vertical hole is defined in a corresponding sidewall and communicate with a corresponding horizontal hole, and each vertical hole extends through a corresponding sidewall and forms the corresponding enlarged end opening of a given channel.

6. The digital camera module as claimed in claim 5, wherein each wire has a connecting end, the connecting end is bent to be approximately perpendicular to the axis of the vertical hole.

7. The digital camera module as claimed in claim 6, wherein the connecting end of each wire is in a shape selected from the group consisting of curve-shaped and hook-shaped.

8. The digital camera module as claimed in claim 1, wherein the enlarged end openings of the channels are bell-shaped.

9. The digital camera module as claimed in claim 1, wherein the chip package comprises a base and a chip module, the chip module is mounted on the base, and the pads electrically connect with the chip module.

10. The digital camera module as claimed in claim 1, wherein each wire is offset from the axis of a corresponding channel.

11. A digital camera module comprising:

a lens module comprising a holder, a barrel slidably received in the holder, and at least one lens element fixed in the barrel, the holder defining a plurality of channels therein, each channel defining an enlarged end opening;

a plurality of wires each received in a corresponding channel;

a focusing structure attached to the holder; and

a chip package comprising a chip module and a base, the chip module mounted on the base, the base defining a plurality of recesses, the chip package further comprising a plurality of pads and defining an air vent respectively communicating a corresponding recess to ambient, each recess receiving a corresponding pad, the pads respectively corresponding to a given channel, each pad electrically coupling with the chip module;

wherein an amount of conductive adhesive is deposited on the pads of the base and retained by the enlarged end openings, the lens module is attached to the chip package by means of the conductive adhesive, each wire respectively electrically couples with a corresponding pad, and the chip module controls the focusing structure to selectably drive a movement of the barrel to move.

12. The digital camera module as claimed in claim 11, wherein the holder comprising a holder body and a flange, the flange comprising a connecting board and a plurality of sidewalls, the sidewalls being attached to the base, each channel comprising a horizontal hole and a vertical hole, each horizontal hole being respectively defined in the connecting board, each vertical hole being respectively defined in a given sidewall and communicating with a corresponding horizontal hole, and each vertical hole extending through a corresponding sidewall and forming the corresponding enlarged end opening, the corresponding enlarged end opening being adjacent a corresponding pad of the base.

13. The digital camera module as claimed in claim 12, wherein each wire comprises a connecting end, the connecting end is bent to be approximately perpendicular to the axis of the vertical hole, and the connecting end of each wire is curve-shaped or hook-shaped.

14. A method for assembling a digital camera module, comprising:

providing a lens module, the lens module comprising, a holder, and a barrel slidably received in the holder, and at least one lens element fixed in the barrel, the holder defining a plurality of channels therein, each channel defining an enlarged end opening;

providing a plurality of wires, each wire being received in a corresponding channel;

providing a focusing structure, the focusing structure being fixed in the holder and configured for selectably driving movement of the lens barrel;

providing a chip package, the chip package comprising a chip module, a base, and a plurality of pads, the chip module mounted on the base, the pads being mounted on the base, each pad being respectively electrically coupled with the chip module;

providing a respective amount of conductive adhesive, the conductive adhesive being deposited on a corresponding pad;

placing the lens module on the chip package, each pad being positioned adjacent a corresponding enlarged end opening of a given channel, the conductive adhesive being substantially retained proximately a corresponding pad by the respective enlarged end opening; and

attaching the lens module to the chip package upon solidifying each respective amount of the conductive adhesive.

15. The method as claimed in claim 14, wherein each channel comprises a horizontal hole and a vertical hole, each vertical hole defines the enlarged end opening of a given channel, and the method further comprises a insulating adhesive into each vertical hole of a corresponding channel for sealing the channel.