Patent Application
20080095528
Many aspects of the present portable electronic device can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the portable electronic device. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Referring to
The housing 20 is configured for accommodating conventional electronic components therein. The housing 20 has an optimized aperture 21 defined therethrough, and a shielding surface 23 conforming to the aperture 21. The aperture 21 has a diameter which shrinks from an outer side of the housing 20 to an inner side of the housing 20. The aperture 21 should preferably to have a stepped shape, as shown in the preferred embodiment. Alternatively, the aperture 21 can also be cone shaped. Accordingly, the shielding surface 23 can be stepped shaped or cone shaped with respect to the aperture 21. The aperture 21 is shaped to allow sufficient image light to pass therethrough, whilst the shielding surface 23 can block as much as possible stray/scatter light.
The digital camera module 30 includes a lens module 40, a holder 50 and a chip package 60, and the lens module 40 and the chip package 60 are mounted on two opposite ends of the holder 50.
The lens module 40 includes a lens barrel 41, a transparent cover 43, and at least one lens 45. The lens barrel 41 is a hollow cylinder in shape, and has a half closed end and a screwed end positioned opposite to the half closed end. The half closed end of the lens barrel 41 has an opening 412 defined in a middle portion thereof. The opening 412 has a uniform diameter. The screwed end of the lens barrel 41 has an external thread 414 formed thereon. The transparent cover 43 is mounted on the half closed end of the barrel 41, and encloses the opening 412 of the barrel 41, so as to allow light to enter into the barrel 41 and avoid dust particles entering into the barrel 41. The at least one lens 45 is received in the lens barrel 41 abutting the half closed end thereof, to receive image light transmitted from the through hole 412 of the lens barrel 41 and form a focused object image.
The holder 50 is a cylinder, and has a through hole penetrating therethrough. The holder 50 has an inner wall 51 surrounding the through hole, and an annular ring 53 radially projecting from the inner wall 51 of the holder 50. The annular ring 53 divides the through hole into a first cavity 54 for receiving the lens module 40 and a second cavity 55 for receiving the chip package 60. An internal thread 511 is formed on the inner wall 51, surrounding the first cavity 54, for screwable attachment with the external thread 414 of the lens barrel 41.
The chip package 60 includes a substrate 61, a chip 63, a plurality of wires 65, an adhesive 67, and a transparent lid 69. The substrate 61 has a plurality of contacts 611 arranged thereon, a connector 613 for connecting with other electronic components, and a plurality of conductive tracks (not shown) formed thereon to electrically connect the contacts 611 to the connector 613. The chip 63 can be, for example a complementary metal-oxide-semiconductor transistor (CMOS) image sensor, or a charge coupled device (CCD) image sensor, and is attached to the substrate 61, surrounded by the contacts 611. The chip 63 has an active area (not shown) and a plurality of pads (not shown) formed on a top surface thereof. Each wire 65 electrically connects a pad of the chip 63 to a corresponding contact 611 of the substrate 61. The adhesive 67 is applied on a periphery of the top surface of the chip 63, over the wires 65. In order to protect the wires from cracking due to external force, the adhesive 67 can be further applied around the chip 63 in a manner so as to cover the whole of each wire 65. The lid 69 is placed over the chip 63, and is adhered to the adhesive 37. The lid 69 and the adhesive 67 cooperatively enclose/seal the active area of the chip 63.
The lens module 40 is received in the first cavity 54 of the holder 50, and the external thread 414 of the lens barrel 41 engages with the internal thread 511 of the holder 41. The chip package 60 is mounted in the second cavity 55 of the holder 50, wherein an end of the holder 50 adjacent the second cavity 55 is attached to the substrate 61, and the annular ring 53 abuts against a periphery of a top surface of the lid 69 of the chip package 60. The active area of the chip 63 is located in the light path of the lens module 40.
The digital camera module 40 is received inside of the housing 20, with the transparent cover 43 contacting with the inner side of the housing 20. The aperture 21 of the housing 20 aligns with the opening 412 of the lens module 40.
In the aforesaid portable electronic device 200, the optimized aperture 21 is defined in the housing 20, and the housing 20 is of a thickness which is thick enough for defining the aperture 21. Thus, the digital camera module 40 can omit the optimized aperture and have a relatively small height thereof. Accordingly, the portable electronic device 200 using the relatively small digital camera module 200 may have a reduced volume.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 200610063160.6 | Oct 2006 | CN | national |
