Patent Abstract:
The present invention provides a faceplate having keys. The keys are defined between protrusions under a film. By pressing down a key, a contact is pushed to be in touch with a circuit board to control the circuit board. Consequently, the faceplate is easily assembled and has a reduced production cost.

Full Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to a faceplate; more particularly, relates to a faceplate easily assembled, where components of the faceplate are saved and a production cost is reduced.  
       DESCRIPTION OF THE RELATED ART  
       [0002]     A general keypad for an electrical device, as shown in  FIG. 6 , has a faceplate  6  with a first opening  61  and a few second openings  62  of the same figure or of various figures. The first opening  61  is set with a transparent window area. The second opening  62  is set with keys  64 ; and a soft fixing layer  65  is set at button of the keys  64 . The fixing layer  65  has bulges  66  corresponding to the keys  64 . The faceplate  6  can be fixed with an electrical device  7 , where the bulges  66  on the fixing layer  65  are corresponding to conducting parts  711  on a circuit board  71  of the electrical device  7  severally. When using the keypad, one of the keys  64  is pressed down, a corresponding one of the bulges  66  is pushed to move toward a corresponding one of the conducting parts  711  on the circuit board  71  to be in touch with the corresponding conducting part  711  for operating the electrical device  7 .  
         [0003]     The components of the keys  63  and the window area  64  are produced through specific and complex processes individually to be assembled with the faceplate  6  separately under required procedures and quality controls. Although the above keypad controls the electrical device  7  by touching the conducting parts  711 , the following disadvantages are obvious:  
         [0004]     1. The keys  64  and the window area  63  are produced separately so that the total cost are high.  
         [0005]     2. The shapes of the keys  63  and the window area  64  have to be tied in with the faceplate  6 , which increases the production difficulties.  
         [0006]     3. The faceplate  6  has already met its limitation over space utilization and thickness reduction, where it is quite hard to make a further improvement in the industrial design.  
         [0007]     Hence, the prior art does not fulfill users&#39; requests on actual use.  
       SUMMARY OF THE INVENTION  
       [0008]     The main purpose of the present invention is to assemble a faceplate easily, to save components of the faceplate, and to reduce a production cost.  
         [0009]     To achieve the above purpose, the present invention is a faceplate having keys for a mobile phone, comprising a transparent film, a thermoplastic urethane (TPU) layer, a buttons layer and a fixing layer, where the transparent film comprises a window area and a keys area; the keys area has a plurality of butting parts defining a plurality of pressing parts; the keys area has a patterns layer being deposed on an end surface of the keys area; the TPU layer is deposed on an end surface of the patterns layer; the buttons layer is deposed on an end surface of the TPU layer; the buttons layer is deposed with a plurality of contacts; the plurality of contacts are corresponding to the plurality of pressing parts one on one; and the fixing layer is deposed on an end surface of the buttons layer. Accordingly, a novel faceplate having keys for a mobile phone is obtained.  
     
    
     BRIEF DESCRIPTIONS OF THE DRAWINGS  
       [0010]     The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention, taken in conjunction with the accompanying drawings, in which  
         [0011]      FIG. 1  is a perspective view of a preferred embodiment according to the present invention;  
         [0012]      FIG. 2  is an explosive view;  
         [0013]      FIG. 3  is a cross-sectional view;  
         [0014]      FIG. 4  is an enlarged view of A in  FIG. 3 ;  
         [0015]      FIG. 5  is a view showing a state of use; and  
         [0016]      FIG. 6  is a perspective view of a prior art. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0017]     The following description of the preferred embodiment is provided to understand the features and the structures of the present invention.  
         [0018]     Please refer to  FIG. 1  and  FIG. 2 , which are a perspective and an explosive views of a preferred embodiment according to the present invention. As shown in the figures, the present invention is a faceplate having keys for a mobile phone, comprising a transparent film  1 , a thermoplastic urethane (TPU) layer  2 , a buttons layer  3  and a fixing layer  4 , where the faceplate is easily assembled; the components of the faceplate are saved; and the production cost is reduced.  
         [0019]     The transparent film  1  is processed through an abrasion proof treatment and comprises a window area  11  and a keys area  12 , where the keys area  12  has a plurality of butting parts  121  defining a plurality of pressing parts  122 . The keys area  12  is deposed with a patterns layer  13  on an end surface of the keys area  12 ; and the patterns layer  13  has a plurality of patterns  131  corresponding to the plurality of pressing parts  122 .  
         [0020]     The TPU layer  2  is deposed on an end surface of the patterns layer  13 ; and the TPU layer  2  has a plurality of protrusions  21  corresponding to the plurality of butting parts  121  one on one on an end surface of the TPU layer  2 .  
         [0021]     The buttons layer  3  is made of rubber, being deposed on an end surface of the TPU layer  2 ; and the buttons layer  3  is deposed with a plurality of contacts  31  corresponding to the plurality of pressing parts  122  one on one.  
         [0022]     The fixing layer  4  is made of plastics, deposed on an end surface of the buttons layer  3 ; and the fixing layer  4  has a plurality of holes  41  corresponding to the plurality of contacts  31  one on one. Thus, a faceplate having keys for a mobile phone is obtained.  
         [0023]     Please refer to  FIG. 3  and  FIG. 4 , which are a cross-sectional view and an enlarged view of A in  FIG. 3 . As shown in the figures, when assembling the present invention, the transparent film  1  is first processed through an abrasion proof treatment. The transparent film  1  is printed with a patterns layer  13  deposed on the back surface of the transparent film  1 , where the patterns layer  13  has a plurality of patterns  131  corresponding to a plurality of pressing parts  122 . The transparent film  1  and the TPU layer  2  are gummed together with a surfactant, where the plurality of protrusions  21  are corresponding to the plurality of butting parts  121  one on one. The plurality of contacts  31  are simultaneously corresponding to the plurality of pressing parts  122  one on one. Thus, a faceplate  10  comprising a window area  11  and a keys area  12  is obtained, where the faceplate  10  is easily assembled; the components of the faceplate  10  are saved; and the production cost is reduced.  
         [0024]     Please refer to  FIG. 5 , which is a view showing a state of use. As shown in the figure, when using a faceplate  10  according to the present invention, the faceplate  10  is bond with a key circuit module  5  and then a pressing part  122  on the keys area  12  is directly pressed to push a contact  31  on the buttons layer  3  coordinated with the TPU layer  2  so that the contact  31  is connected with a conducting part  51  of the key circuit module  5  to operate the key circuit module  5 .  
         [0025]     To sum up, the present invention is a faceplate having keys for a mobile phone, where the faceplate is easily assembled; the components of the faceplate are saved; and the production cost is reduced.  
         [0026]     The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.

Technology Classification (CPC): 7