Patent Publication Number: US-2007096280-A1

Title: Image sensor module structure and a method for manufacturing the same

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The invention relates an image sensor module structure and a method for manufacturing the same, and particular to a structure for packaging image sensor module, the manufacturing cost may be decreased, and the size of the package may be decreased.  
      2. Description of the Related Art  
      Referring to  FIG. 1 , it is an image sensor module structure includes a substrate  10 , a chip  20 , a plurality of wires  24 , an adhered layer  26 , a lens holder  28  and a lens barrel  32 .  
      The substrate  10  has an upper surface  12  on which plurality of first electrodes  16  are formed, and a lower surface  14  on which plurality of second electrodes  18  are formed, the first electrodes  16  are corresponding to electrically connect to the second electrodes  18 . The chip  20  is arranged on the upper surface  12  of the substrate  101 , and is formed with bonding pads  22 . Each wire  24  is electrically connected the bonding pad  22  to the first electrodes  16  of the substrate  10 . The adhered layer  26  is coated on the upper  12  of the substrate  10 . The lens holder  28  is formed with internal thread  30 , and is adhered on the upper surface  12  of the substrate  10  by the adhered layer  26 . The lens barrel  32  is formed with external thread  34  screwed on the internal thread  30  of the lens holder  28 .  
      Therefore, the adhered layer  26  may be flowed to out of the lens holder  28  to product a bigger size of module, so that the reliability of the product is decreased.  
     SUMMARY OF THE INVENTION  
      An objective of the invention is to provide an image sensor module structure and a method for manufacturing the same, and capable of decreasing the manufacturing cast of the image sensor.  
      An objective of the invention is to provide an image sensor module structure a method for manufacturing the same, and capable of decreasing the size of the structure.  
      To achieve the above-mentioned object, the invention includes An image sensor module structure and method for manufacturing the same includes a substrate having an upper surface and a lower surface, a chip is mounted on the upper surface of the substrate, a plurality of wires are electrically connected the bonding pads of the chip to the first electrodes of the substrate, a adhered layer is coated on the upper surface of the substrate, a lens holder has a lateral wall and internal thread, the lateral wall is adhered on the upper surface of the substrate by the adhered layer to encapsulate the chip, so that the adhered layer is pressed to cover the wires, cutting the lateral wall of the lens holder and the substrate adhered on the lateral wall of the lens holder; and a lens barrel is formed with external thread screwed on the internal thread of the lens holder.  
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a schematic illustration showing a conventional image sensor module structure.  
       FIG. 2  is a first schematic illustration showing an image sensor module structure.  
       FIG. 3  is a second schematic illustration showing an image sensor module structure. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      Please refer to  FIG. 2 , an image sensor module structure of the present invention includes substrate  40 , a chip  42 , wires  44 , an adhered layer  46 , lens holder  48 , and a lens barrel  50 .  
      The substrate  40  has an upper surface  52 , which is formed with first electrodes  56 , and a lower surface  54 , which is formed with second electrodes  58  corresponding to electrically connect to the first electrodes  56  The chip  42  is mounted on the upper surface  52  of the substrate  40 , the chip  42  has a sensor region  60  and a plurality of bonding pads  62  located at the side of the sensor region  60  of the chip  42 .  
      The plurality of wires  44  are electrically connected the bonding pads  62  of the chip  40  to the first electrodes  56  of the substrate  40 .  
      The adhered layer  46  is coated on the upper surface  52  of the substrate  40 .  
      The lens holder  48  has a lateral wall  49  and internal thread  64 , the lateral wall  49  is adhered on the upper surface  52  of the substrate  40  by the adhered layer  46  to encapsulate the chip  40 , so that the adhered layer  46  is pressed to cover the wires  44  and chip  42  to fix the chip  42 .  
      The lens barrel  50  is formed with external thread  66  screwed on the internal thread  64  of the lens holder  48 .  
      Cutting the lateral wall  49  of the lens holder  48  and the substrate  40  adhered on the lateral wall  49  of the lens holder  48 .  
      Please refer to  FIG. 3 , wherein the present invention includes a frame layer  43  mounted on the upper surface  52  of the substrate  40 , a cavity  45  is formed between the substrate  40  and the frame layer  43 . The adhered layer  46  is coated on the frame layer  43 , the lateral wall  49  of the lens holder  48  is adhered on the frame layer  43  to press the adhered layer  43  to cover the wires  44  and chip  42 .  
      Cutting the lateral wall  49  of the lens holder  48 , frame layer  43 , and the substrate  40  adhered on the lateral wall  49  of the lens holder  48  to product a signal module.  
      While the invention has been described by the way of an example and in terms of a preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications. Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications.