1. Field of the Invention
The present invention relates to housings, particularly to housings used in electronic devices.
2. Description of Related Art
With the development of wireless communication and information processing technology, portable electronic devices (such as mobile telephones and electronic notebooks) are now in widespread use. External appearance of the housing of the portable electronic device has become a key factor for attracting consumers.
The external appearance of the housing can usually be made by In-Mold Labeling (IML) on the housing. A decorative film with predetermine patterns is disposed and adhered on the housing within a die. However, the decorative film has a deformation coefficient different from the housing. Thus, stress may occur between the decorative film and the housing while injecting melted plastic to mold the housing, which may cause a birefringence between the decorative film and the housing. Thus, the transparent quality of the housing may be degraded.
Therefore, there is room for improvement within the art.
Many aspects of the exemplary housing of an electronic device can be better understood with reference to the following drawings. These drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present methods. Moreover, in the drawings like reference numerals designate corresponding parts throughout the several views. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.
Referring to
The film layer 122 may be made of transparent plastic selected from a group including polymethyl methacrylate and polystyrene. The film layer 122 has a thickness ranging from about 0.5 millimeter to about 1.5 millimeters. The shading layer 124 may be ink film, painted film or metallic film.
Referring to
The latching member 14 may be made of a material selected from a group including polyvinyl chloride (PVC), polycarbonate, polystyrene, and any other thermoplastic resins.
The window 1228 has no thermoplastic plastic injected thereon. Accordingly, no stresses occurr on the window 1228. The window 1228 can prevent birefringence to improve the transparent quality of the housing 10.
It is to be understood, however, that even through numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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200810301976.7 | Jun 2008 | CN | national |