Abstract:
A method of manufacturing a substrate structure is disclosed, including: providing a carrier board having a first surface; and forming a circuit layer and metallic lines on the first surface. The metallic lines and the carrier board constitute a two dimensional code, thereby eliminating the need to form 2D codes by laser or inkjet after the substrate structure is manufactured. Therefore, the method is simplified, and the substrate structure has a reduced cost. The present invention further provides the substrate structure.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to substrate structures, and, more particularly, to a substrate structure and a simplified method of manufacturing the same. 
         [0003]    2. Description of Related Art 
         [0004]    As the technology continues to advance, industrial and commercial developments are growing rapidly, leading to convenience orientated global economics. Barcode technology is therefore developed to enhance efficiency in organizing tasks and information. 
         [0005]    A barcode is an optical machine-readable representation of data relating to the object to which it is attached, such as catalog number, company number or examination number. Up to date, this barcode technology has been widely applied in commercial industries and in daily life. As the demand of accommodating data is increasing everyday, the barcode technology has been developed from one dimensional bar code (such as JAN13) to two dimensional barcode (such as Matrix code, PDF417). The size of the barcode is also decreasing. 
         [0006]    In general, a barcode is often tagged on an appropriate place of the package or surface of the product. A common form of a barcode label is an image having alternating black-white strips. After illuminating the barcode by infrared, due to the properties in which black color tends to absorb light while white color reflects the light, information of the product can be recognized through converting the light waves into electronic pulses and then to obtain the hidden information behind the barcode. Accordingly, clarity of the barcode is a very important aspect in research to correctly distinguish the barcodes to obtain the information. 
         [0007]      FIGS. 1A to 1D  are cross-sectional views illustrating a method of manufacturing a 2D barcode on a conventional substrate. 
         [0008]    As shown in  FIG. 1A , a board  10  has a first surface  101  and an opposing second surface  102 , and a metallic layer  11  is formed on the first surface  101  and second surface  102 . 
         [0009]    As shown in  FIG. 1B , a patterning process is performed to etch the metallic layer  11 , so as to form a patterned metallic layer  12  having a plurality of holes  121 , and a portion of the first surface  101  and a portion of the second surface  102  are exposed from the holes  121 . 
         [0010]    As shown in  FIG. 1C , a protective layer  13  having a plurality of holes  131  is formed on the portions of the first surface  101  and the second surface  102  that are exposed from the holes  121 . A portion of the patterned metallic layer  12  is exposed from the holes  131 . 
         [0011]    As shown in  FIG. 1D , a laser process is performed on the protective layer  13  to form a protective pattern  130 , which forms the 2D image. Alternatively, as shown in FIG.  1 D′, inkjet is used to form an applying layer  14  on the protective layer  13 , so as to form another protective pattern  130 ′ for forming the 2D barcode image. 
         [0012]    However, the 2D barcode image is formed on the protective layer  13  in the aforementioned method of manufacture of the 2D barcode on the substrate by laser or inkjet This increases the cost of the equipment and human resources, and also has the problem of prolonged manufacture process. Moreover, the conventional 2D barcode image is displayed in grey scale, resulting in a decrease in clarity of the displayed barcode image, undesirably making it difficult to be recognized. 
         [0013]    Therefore, there is an urgent need for solving the prior art problems. 
       SUMMARY OF THE INVENTION 
       [0014]    According to the foregoing drawbacks, the present invention provides a method of manufacturing a substrate structure, comprising: providing a carrier board having a first surface; and forming a circuit layer and metallic lines on the first surface. 
         [0015]    The present invention further comprises a method of manufacturing a substrate structure, comprising: providing a carrier board having a first surface; forming a circuit layer and an unpatterned metallic layer on the first surface; and forming an insulative protective layer on the first surface, the circuit layer, and the unpatterned metallic layer, wherein the insulative protective layer has insulative protective lines and a plurality of holes, the unpatterned metallic layer is exposed from the insulative protective lines, and the circuit layer is exposed from the holes. 
         [0016]    The present invention further provides a substrate structure, comprising: a carrier board having a first and a second opposing surface; and a circuit layer and metallic lines formed on the first surface. 
         [0017]    The present invention further provides a substrate structure, comprising: a carrier board having a first surface; a circuit layer and an unpatterned metallic layer formed on the first surface; and a protective insulative layer formed on the first surface, the circuit layer and the unpatterned metallic layer, wherein the insulative protective layer has insulative protective lines and a plurality of holes, the unpatterned metallic layer is exposed from the insulative protective lines, and the circuit layer is exposed from the holes. 
         [0018]    The substrate structure and the method of manufacturing the same according to the present invention are characterized by forming a barcode at the same time when the substrate is formed by a patterning process, so as to replace the laser process to form the barcode after the substrate is completely, thereby simplifying the manufacturing processes, without the need of preparing extra laser equipment and human resources, and the overall costs are reduced as a result. 
         [0019]    In comparison with the conventional grey scale barcode made by laser, the color difference between the protective insulative layer and other layers provided by the present invention allows the 2D codes to be more easily recognized 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0020]    The present invention can be more fully understood by reading the following detailed description of the preferred embodiments, with reference made to the accompanying drawings, wherein: 
           [0021]      FIGS. 1A to 1D  are cross-sectional views illustrating a method of manufacturing a conventional substrate, wherein FIG.  1 D′ is another method of  FIG. 1D ; 
           [0022]    FIGS.  2 A to  2 C″ are cross-sectional views illustrating a method of manufacturing a substrate structure according to the present invention; wherein  FIGS. 2A to 2B  illustrate a first half portion of a method of manufacturing the substrate of a first preferred embodiment according to the preset invention, and FIGS.  2 A′ to  2 B′ illustrate a first half portion of the method of manufacturing the substrate of a second preferred embodiment according to the preset invention. FIGS.  2 C′ and  2 C″ are different embodiments of  FIG. 2C ; 
           [0023]      FIG. 3  is a top view of the 2D codes of the first embodiment according to the present invention; and 
           [0024]      FIG. 4  is a top view of the 2D codes of another embodiment according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
       [0025]    The present invention is described in the following with specific embodiments, so that one skilled in the pertinent art can easily understand other advantages and effects of the present invention from the disclosure of the present invention. 
         [0026]    It should be noted that all the drawings are not intended to limit the present invention. Various modification and variations can be made without departing from the spirit of the present invention. Further, terms, such as “first”, “second”, “third”, “fourth” and “one” etc., are merely for illustrative purpose and should not be construed to limit the scope of the pre FIGS.  2 A to  2 C″ are cross-sectional views of a manufacturing method of a substrate structure of the present invention; wherein  FIGS. 2A to 2B  illustrate the first half part of the manufacturing process of the substrate of the first preferred embodiment of the preset invention while FIGS.  2 A′ to  2 B′ illustrate the first half part of the manufacturing process of the substrate of the second preferred embodiment of the preset invention. 
         [0027]    In a first embodiment, as shown in  FIG. 2A , a carrier board  20  having a first surface  201  and a second surface  202  is prepared, and a metallic layer  12  formed on the first surface  201  and the second surface  202 . 
         [0028]    As shown in  FIG. 2B , a patterning process is performed to etch the metallic layer  21 , allowing the metallic layer  21  to be defined in a pattering region D 1  and a non-pattering region D 2 , and a circuit layer  211 , the metallic lines  212  and a plurality of first holes  213  are formed in the pattering region D 1 , so as to form a first stage substrate  2   a  for the subsequent processes. 
         [0029]    In a second embodiment, as shown in FIG.  2 A′, a carrier board  20  having a first surface  201  and a second surface  202  is formed. 
         [0030]    As shown in FIG.  2 B′, a patterning process is performed on the first surface  201  and the second surface  202  of the carrier board  20  to deposit a metallic material, allowing the circuit layer  211 , the metallic lines  212  and a plurality of the first holes  213  to be formed in the patterning region D 1  and the unpatterned metallic layer  22  is formed in the unpatterned region D 2  to form the first stage substrate  2   a  for the subsequent processes. 
         [0031]    In an embodiment, the depositing process is achieved by at least one of, but is not limited to the following processes: electroplating or chemical vapor deposition (CVD) or physical vapor deposition (PVD), such as evaporation deposition, ion plating and sputtering deposition. 
         [0032]    In an embodiment, the metallic layer is made of one of the materials including copper, iron or a combination thereof, the selection of which depends on practical requirements but is not limited to the aforesaid materials. 
         [0033]    In an embodiment, the metallic lines  212  is formed with at least one second hole  2122 , and the metallic lines  212  can be formed by at least one metallic metal pillar  2121 , and a portion of the first surface  201  and a portion of the second surface  202  are exposed from the first holes  213  and the second holes  2122 . 
         [0034]      FIG. 2C  is a cross-sectional view of a first stage substrate  2   a  after the first stage process disclosed in first and second embodiments, preparing for subsequent processes. 
         [0035]    As shown in  FIG. 2C , an insulative protective layer  23  is formed on the first surface  201 , the second surface  202 , the circuit layer  211 , the metallic lines  212  and the unpatterned metallic layer  22 . The protective insulative layer  23  has a plurality of third holes  231  and protective insulative lines  232 , and is exposed from the first surface  201  of the second holes  2122 . The circuit layer  211  and the metallic lines  212  are exposed from the third holes  231 , and the protective insulative lines  232  have at least one fourth holes  2322 . The insulative protective lines  232  are formed by at least one insulative pillar  2321 , allowing the unpatterned metallic layer  22  to be exposed from the fourth holes  2322 . 
         [0036]    Accordingly, 2D codes A are formed by the metallic lines  212  and the first surface  201  (referring also to  FIG. 3  which is a top view of 2D codes A), and 2D codes B are formed at the same by the unpatterned  22  being exposed from the fourth holes  2322  and the insulative protective lines  232  (referring to  FIG. 4  which is the top view of the 2D codes B), so as to form the substrate structure having 2D codes. 
         [0037]    In the present embodiment, the insulative protective layer  23  can be a solder mask layer, and a color difference is established between the insulative layer  23  and the first surface  201 , the second surface  202 , the circuit layer  211 , the metallic lines  212  and the unpatterned metallic layer  22 . The 2D codes A and B include material number, wholesale number, board number and defect position, etc. 
         [0038]    It should be noted that the 2D codes A and B can be both formed on the substrate structure  2 , or one of the 2D codes A and B is selectively formed on the substrate structure  2  (as shown in FIGS.  2 C′ and  2 C″). Additional it is not necessary to form the 2D codes A and B at the same time, and also the 2D codes A and B are not limited to the periphery of the substrate structure  2 , but on the other hand can be formed at any appropriate places on the substrate structure  2 . 
         [0039]    In conclusion, the substrate structure and the method of manufacture of the present invention is characterized by forming a barcode at the same time when the substrate is formed by a patterning process, so as to replace the laser process to form the barcode after the substrate is completely, thereby simplifying the manufacturing processes, without the need of preparing extra laser equipment and human resources, and the overall costs are reduced as a result. 
         [0040]    Besides, through the protective insulative layer and obvious color difference between the layers, the present invention can greatly enhance the recognizability of 2D codes. 
         [0041]    The present invention has been described using exemplary preferred embodiments. However, it is to be understood that the scope of the present invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements. The scope of the claims, therefore, should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.