Patent Publication Number: US-8535068-B2

Title: USB connector

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a USB connector, especially to a USB connector supporting both protocols of USB2.0 and USB3.0. 
     2. Description of Related Art 
     A peripheral device having USB interfaces provides a plug-and-play function, so after relevant products are launched, the products really catch consumers attention. The USB2.0 protocol is capable of providing a transmission speed up to 480M bits/sec. With the development of multimedia technology, if a multimedia file having a volume of 25 GB is desired to be downloaded through the USB2.0 protocol, it may take quite a while and may not satisfy consumer&#39;s needs. As a result, the USB3.0 protocol is launched, the USB3.0 protocol is capable of providing a transmission speed up to 4.8 G bits/sec, if the same 25 GB multimedia file is desired to be downloaded through the USB 3.0 protocol, the required time is only one tenth of the original time that the USB2.0 protocol may take. 
     However, the USB2.0 protocol is still the main stream in the market, and most peripheral devices having USB interfaces can only support the USB2.0 protocol, so how to design an electric connector capable of supporting both of the USB2.0 and USB3.0 protocols is an issue to be concerned. 
     Referring to  FIG. 1   a  and  FIG. 1   b , wherein  FIG. 1   a  is a schematic view illustrating the front of a substrate of a conventional USB connector not being formed with a lead angle structure and  FIG. 1   b  is a schematic view illustrating the substrate of a conventional USB connector being inserted with the terminal of a USB plug. As shown in  FIG. 1   a , the terminal  10  of a conventional USB connector is abutted against the front edge of a substrate  20 , so there is no space for forming a lead angle at the front edge of the substrate  20  for guiding the terminal  10  to be smoothly inserted in a USB plug  30 ; as shown in  FIG. 1   b , when the terminal  10  is inserted in the USB plug  30 , the front edge of a terminal  31  of the USB plug  30  is very likely to be picked and backwardly squeezed then deformed due to the front edge of the substrate  20  not being formed with a lead angle, said condition may cause imperfect contact relative to the USB plug  30 . 
     With respect to the mentioned disadvantages of conventional connectors, the present invention provides a novel USB connector for improving said disadvantages. 
     SUMMARY OF THE INVENTION 
     One primary objective of the present invention is to provide a USB connector in which the front of a substrate is formed with a lead angle, so when being inserted with a USB plug, the lead angle allows the front edge of the substrate to be in forward contact with terminals of the USB plug without squeezing the front edges of the terminals of the USB plug. 
     Another objective of the present invention is to provide a USB connector in which plural first contact pads and plural second contact pads are installed, and the plural first contact pads and the plural second contact pads can staggeringly arranged at the same side or oppositely arranged. 
     One another objective of the present invention is to provide a USB connector having a USB2.0 connector and a USB3.0 connector having different transmission speed, for meeting the needs of transmitting with different transmission speeds. 
     Still one another objective of the present invention is to provide a USB connector having advantages of thinner thickness, lower production cost and not limiting to be applied in certain models when being used. 
     For achieving said objectives, the present invention provides a USB connector, which comprises: a connector main body having plural open slots, plural first terminals and plural second terminals, every two open slots are spaced by a slot column, wherein one end of the plural first terminals are respectively disposed in front of the plural slot columns, the lateral sides thereof are respectively and downwardly bent then further bent towards right or left thereby forming a first solder end, one end of the plural second terminals are respectively provided in the plural open slots and exposed outside the open slots, the other ends are respectively and downwardly bent then horizontally extended thereby forming a second solder end, the front of the connector main body is downwardly extended thereby forming a stop part having a first lead angle; and a substrate having plural first contact pads and plural second contact pads, wherein the plural first contact pads are disposed at the front portion of the substrate and at the locations corresponding to the first solder ends thereby allowing the plural first terminals to be coupled with, the plural second contact pads are disposed at the rear portion of the substrate and at the locations corresponding to the second solder ends thereby allowing the plural second terminals to be coupled with, so as to form a USB connector. 
     For achieving said objectives, the present invention provides a USB connector, which comprises: a connector main body having plural open slots, plural first terminals and plural second terminals, wherein every two open slots are spaced by a slot column, one end of the plural first terminals are respectively disposed below the plural slot columns and exposed outside the plural slot columns then forwardly extended, the other ends are respectively and downwardly bent then horizontally extended thereby forming a first solder end, one end of the plural second terminals are respectively provided in the plural open slots and exposed outside the open slots, the other ends are respectively and downwardly bent then horizontally extended thereby forming a second solder end, the front of the connector main body is downwardly extended thereby forming a stop part having a first lead angle; and a substrate having plural first contact pads and plural second contact pads, and the plural first contact pads and the plural second contact pads are staggeringly arranged for being respectively coupled to the plural first terminals and the plural second terminals, thereby forming a USB connector. 
     For achieving said objectives, the present invention provides a USB connector, which comprises: a connector main body having plural open slots, plural first terminals and plural second terminals, every two open slots are spaced by a slot column, wherein one end of the plural first terminals are respectively disposed in front of the plural slot columns, the lateral sides thereof are respectively and downwardly bent then further bent towards right or left thereby forming a first solder end, one end of the plural second terminals are respectively provided in the plural open slots and exposed outside the open slots, the other ends are respectively and downwardly bent then horizontally extended, thereby forming a second solder end, the front of the connector main body is formed with a first lead angle; and a substrate having plural first contact pads and plural second contact pads, wherein the plural first contact pads are disposed at the front portion of the substrate and at the locations corresponding to the first solder ends thereby allowing the plural first terminals to be coupled with, the plural second contact pads are disposed at the rear portion of the substrate and at the locations corresponding to the second solder ends thereby allowing the plural second terminals to be coupled with, so as to form a USB connector. 
     For achieving said objectives, the present invention provides a USB connector, which comprises: a connector main body having plural open slots, plural first terminals and plural second terminals, wherein every two open slots are spaced by a slot column, one end of the plural first terminals are respectively disposed below the plural slot columns and exposed outside the plural slot columns then forwardly extended, the other ends are respectively and downwardly bent then horizontally extended thereby forming a first solder end, one end of the plural second terminals are respectively provided in the plural open slots and exposed outside the open slots, the other ends are respectively and downwardly bent then horizontally extended thereby forming a second solder end, the front of the connector main body is formed with a first lead angle; and a substrate having plural first contact pads and plural second contact pads, and the plural first contact pads and the plural second contact pads are staggeringly arranged for being respectively coupled to the plural first terminals and the plural second terminals, thereby forming a USB connector. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which: 
         FIG. 1   a  is a schematic view illustrating the front of a substrate of a conventional USB connector not being formed with a lead angle structure; 
         FIG. 1   b  is a schematic view illustrating the substrate of a conventional USB connector being inserted with the terminal of a USB plug; 
         FIG. 2  is a schematic exploded view showing the USB connector according to one preferred embodiment of the present invention; 
         FIG. 3  is a schematic view showing the assembly of the connector main body according to one preferred embodiment of the present invention; 
         FIG. 4  is a schematic view showing the assembly of the USB connector according to one preferred embodiment of the present invention; 
         FIG. 5  is a schematic view illustrating the substrate of the USB connector being inserted with the terminal of a USB plug according to one preferred embodiment of the present invention; 
         FIG. 6  is a schematic exploded view showing the USB connector according to another preferred embodiment of the present invention; 
         FIG. 7  is a schematic view showing the assembly of the connector main body according to another preferred embodiment of the present invention; 
         FIG. 8  is a schematic view showing the assembly of the USB connector according to another preferred embodiment of the present invention; 
         FIG. 9  is a schematic exploded view showing the USB connector according to one another preferred embodiment of the present invention; 
         FIG. 10  is a schematic view showing the assembly of the connector main body according to one another preferred embodiment of the present invention; 
         FIG. 11  is a schematic view showing the assembly of the USB connector according to one another preferred embodiment of the present invention; 
         FIG. 12  is a schematic exploded view showing the USB connector according to still one another preferred embodiment of the present invention; 
         FIG. 13  is a schematic view showing the assembly of the connector main body according to still one another preferred embodiment of the present invention; and 
         FIG. 14  is a schematic view showing the assembly of the USB connector according to still one another preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention, wherein  FIG. 2  is a schematic exploded view showing the USB connector according to one preferred embodiment of the present invention;  FIG. 3  is a schematic view showing the assembly of the connector main body according to one preferred embodiment of the present invention;  FIG. 4  is a schematic view showing the assembly of the USB connector according to one preferred embodiment of the present invention; and  FIG. 5  is a schematic view illustrating the substrate of the USB connector being inserted with the terminal of a USB plug according to one preferred embodiment of the present invention. 
     As shown in figures, the USB connector provided by the present invention comprises a connector main body  100  and a substrate  200 . 
     The connector main body  100  is made of an insulation material, e.g. but not limited to plastic, and is formed with plural open slots  101 , plural first terminals  110  and plural second terminals  120 , wherein every two open slots  101  are spaced by a slot column  102 , one end of the plural first terminals  110 , e.g. but not limited to the right end, are respectively disposed in front of the plural slot columns  102 , the lateral sides thereof are respectively and downwardly bent then further bent towards right or left thereby forming a surface, wherein the two first terminals  110  at the right side are bent towards right, the two first terminals  110  at the left side are bent towards left, thereby respectively forming a first solder end  111 . Wherein, the quantity of the plural first terminals  110  is the same as that of the plural slot columns  102 , and the quantity is e.g. but not limited to four. 
     One end of the plural second terminals  120 , e.g. but not limited to the right end, are respectively provided in the plural open slots  101  and exposed outside the open slots  101 , the other ends, e.g. but not limited to the left end, are respectively and downwardly bent then horizontally extended, thereby forming a second solder end  121 . The front of the connector main body  100  is downwardly extended for forming a stop part  130  having a first lead angle  131 , e.g. but not limited to 30 degree. Wherein, the stop part  130  is served to stop and position the substrate  200 , such that plural first contact pads  210  and plural second contact pads  220  are able to be aligned with the first solder ends  111  of the plural first terminals  110  and the second solder ends  121  of the plural second terminals  120 . The quantity of the plural second terminals  120  is the same as that of the plural open slots  101 , and the quantity is e.g. but not limited to five. 
     In addition, one end of each second terminal  120  is exposed outside the open slot  101  then further upwardly bent then downwardly bent. 
     The substrate  200  has the plural first contact pads  210  and the plural second contact pads  220  respectively exposed outside the substrate  200 , wherein the plural first contact pads  210  are disposed at the front portion of the substrate  200  and at the locations corresponding to the first solder ends  111  thereby allowing the plural first terminals  110  to be coupled with, the plural second contact pads  220  are disposed at the rear portion of the substrate  200  and at the locations corresponding to the second solder ends  121  thereby allowing the plural second terminals  120  to be coupled with, so as to form a USB connector. 
     In addition, the front of each first terminal  110  is further formed with a second lead angle  140 , e.g. but not limited to 30 degree. 
     Moreover, the substrate  200  is, e.g. but not limited to, a Chip-On-Board (COB) substrate or a printed circuit board substrate; in this embodiment, the COB substrate is adopted for illustration and not served as a limitation. The COB technology has properties of thin thickness, compact wiring and small area, so it is widely used in the package of LCD driving chips or NAND flash memories. 
     The quantity of the plural first contact pads  210  is e.g. but not limited to four, thereby forming a USB2.0 connector, wherein the plural first contact pads  210  are able to respectively transmit V BUS , D−, D+ and GND signals of USB2.0 specification. The quantity of the plural second contact pads  220  is e.g. but not limited to five, wherein the plural second contact pads  220  are able to respectively transmit StdA_SSRX−, StdA_SSRX+, GND_DRAIN, StdA_SSTX− and StdA_SSTX+ signals of USB3.0 specification. 
     According to the USB connector provided by the present invention, the substrate  200  further includes a USB controller  230  and at least a flash memory  240  respectively coupled to the plural first contact pads  210  and the plural second contact pads  220 . The USB controller  230  and the flash memory  240  are installed on the substrate  200  with the Chip-On-Board (COB) means, wherein the Chip-On-Board technique is a conventional art therefore no further illustration is provided. 
     Referring to  FIG. 3  and  FIG. 4 , when being manufactured, firstly the plural first terminals  110  are disposed in front of the plural second terminals  120 , then integrally formed with the connector main body  100  for assembling as one piece; then the connector main body  100  is disposed on the substrate  200  and one end of the substrate  200  abuts against the stop part  130  for allowing the first solder ends  111  of the plural first terminals  110  and the second solder ends  121  of the plural second terminals  120  to be respectively aligned with the plural first contact pads  210  and the plural second contact pads  220 , then respectively soldered on the plural first contact pads  210  and the plural second contact pads  220  with a Surface Mount Technology (SMT), thereby forming the USB connector of the present invention. According to the USB connector provided by the present invention, the four first terminals  110  can form a USB2.0 connector, the five second terminals  120  of the USB connector can form a USB3.0 connector, thereby respectively allowing a USB2.0 plug or a USB3.0 plug to be inserted. As such, the USB connector provided by the present invention has advantages of the substrate being prevented from squeezing the front edges of terminals of a USB plug, having thinner thickness, lower production cost and not limiting to be applied in certain models when being used. 
     As shown in  FIG. 5 , when the USB connector of the present invention is inserted with a USB plug  300 , through being guided by the first lead angle  131  and the second lead angle  140 , the front edge of the substrate  200  is enabled to be in forward contact with a terminal  310  of the USB plug  300  without squeezing the front edge of the terminal  310  of the USB plug  300 . As such, the USB connector of the present invention is capable of being in contact with the USB plug  300  with a smoother manner, thereby improving the disadvantages of the conventional USB connector. 
     Referring from  FIG. 6  to  FIG. 8 , wherein  FIG. 6  is a schematic exploded view showing the USB connector according to another preferred embodiment of the present invention;  FIG. 7  is a schematic view showing the assembly of the connector main body according to another preferred embodiment of the present invention; and  FIG. 8  is a schematic view showing the assembly of the USB connector according to another preferred embodiment of the present invention. 
     As shown in figures, the USB connector provided by the present invention comprises a connector main body  400  and a substrate  500 . 
     The connector main body  400  is made of an insulation material, e.g. but not limited to plastic, and is formed with plural open slots  401 , plural first terminals  410  and plural second terminals  420 , wherein every two open slots  401  are spaced by a slot column  402 , one end of the plural first terminals  410 , e.g. but not limited to the right end, are respectively disposed below the plural slot columns  402 , exposed outside the plural slot columns  402  then forwardly extended, the other ends, e.g. but not limited to the left end, are respectively and downwardly bent then horizontally extended, thereby forming a first solder end  411 . Wherein, the quantity of the plural first terminals  410  is the same as that of the plural slot columns  402 , and the quantity is e.g. but not limited to four. In addition, the front of the connector main body  400  is downwardly extended for forming a stop part  430  having a first lead angle  431 , wherein the stop part  430  is served to stop and position the substrate  500 , the first lead angle  431  is e.g. but not limited to 30 degree. 
     One end of the plural second terminals  420 , e.g. but not limited to the right end, are respectively provided in the plural open slots  401  and exposed outside the open slots  401 , the other ends, e.g. but not limited to the left end, are respectively and downwardly bent then horizontally extended, thereby forming a second solder end  421 . Wherein, the quantity of the plural second terminals  420  is the same as that of the plural open slots  401 , and the quantity is e.g. but not limited to five. 
     In addition, one end of each second terminal  420  is exposed outside the open slot  401  then further upwardly bent then downwardly bent. 
     The substrate  500  has plural first contact pads  510  and plural second contact pads  520  respectively exposed outside the substrate  500 , and the plural first contact pads  510  and the plural second contact pads  520  are, for example, staggeringly arranged. The plural first contact pads  510  and the plural second contact pads  520  are respectively served to allow the first solder ends  411  of the plural first terminals  410  and the second solder ends  421  of the plural second terminals  420  to be soldered thereon. 
     In addition, the front of each first terminal  410  is further formed with a second lead angle  440 , e.g. but not limited to 30 degree. The function of the first lead angle  431  and the second lead angle  440  is the same as that of the first lead angle  131  and the second lead angle  140 , therefore no further illustration is provided. 
     Moreover, the substrate  500  is, e.g. but not limited to, a Chip-On-Board (COB) substrate or a printed circuit board substrate; in this embodiment, the COB substrate is adopted for illustration and not served as a limitation. The COB technology has properties of thin thickness, compact wiring and small area, so it is widely used in the package of LCD driving chips or NAND flash memories. 
     The quantity of the plural first contact pads  510  is e.g. but not limited to four, thereby forming a USB2.0 connector, wherein the plural first contact pads  510  are able to respectively transmit V BUS , D−, D+ and GND signals of USB2.0 specification. 
     The plural second contact pads  520  are, for example, staggeringly arranged with the plural first contact pads  510 , the quantity thereof is e.g. but not limited to five, wherein the plural second contact pads  520  are able to respectively transmit StdA_SSRX−, StdA_SSRX+, GND_DRAIN, StdA_SSTX− and StdA_SSTX+ signals of USB3.0 specification. 
     According to the USB connector provided by the present invention, the substrate  500  further includes a USB controller  530  and at least a flash memory  540  respectively coupled to the plural first contact pads  510  and the plural second contact pads  520 . The USB controller  530  and the flash memory  540  are installed on the substrate  500  with the Chip-On-Board (COB) means, wherein the Chip-On-Board technique is a conventional art therefore no further illustration is provided. 
     Referring to  FIG. 7  and  FIG. 8 , when being manufactured, firstly the plural first terminals  410  and the plural second terminals  420  are staggeringly arranged, then integrally formed with the connector main body  400  for assembling as one piece; then the connector main body  400  is disposed on the substrate  500  and one end thereof abuts against the stop part  430  for allowing the first solder ends  411  of the plural first terminals  410  and the second solder ends  421  of the plural second terminals  420  to be respectively aligned with the plural first contact pads  510  and the plural second contact pads  520 , then respectively soldered on the plural first contact pads  510  and the plural second contact pads  520  with a Surface Mount Technology (SMT), thereby forming the USB connector of the present invention. According to the USB connector provided by the present invention, the four first terminals  410  can form a USB2.0 connector, the five second terminals  420  of the USB connector can form a USB3.0 connector, thereby respectively allowing a USB2.0 plug or a USB3.0 plug to be inserted. As such, the USB connector provided by the present invention has advantages of the substrate being prevented from squeezing the front edges of terminals of a USB plug, having thinner thickness, lower production cost and not limiting to be applied in certain models when being used. 
     Referring from  FIG. 9  to  FIG. 11 , wherein  FIG. 9  is a schematic exploded view showing the USB connector according to one another preferred embodiment of the present invention;  FIG. 10  is a schematic view showing the assembly of the connector main body according to one another preferred embodiment of the present invention; and  FIG. 11  is a schematic view showing the assembly of the USB connector according to one another preferred embodiment of the present invention. 
     As shown in figures, the USB connector provided by the present invention comprises a connector main body  600  and a substrate  700 . 
     The connector main body  600  is made of an insulation material, e.g. but not limited to plastic, and is formed with plural open slots  601 , plural first terminals  610  and plural second terminals  620 , wherein every two open slots  601  are spaced by a slot column  602 , one end of the plural first terminals  610 , e.g. but not limited to the right end, are respectively disposed in front of the plural slot columns  602 , the lateral sides thereof are respectively and downwardly bent then further bent towards right or left thereby forming a surface, wherein the two first terminals  610  at the right side are bent towards right, the two first terminals  610  at the left side are bent towards left thereby respectively forming a first solder end  611 . Wherein, the quantity of the plural first terminals  610  is the same as that of the plural slot columns  602 , and the quantity is e.g. but not limited to four. 
     One end of the plural second terminals  620 , e.g. but not limited to the right end, are respectively provided in the plural open slots  601  and exposed outside the open slots  601 , the other ends, e.g. but not limited to the left end, are respectively and downwardly bent then horizontally extended, thereby forming a second solder end  621 . The front of the connector main body  600  is formed with a first lead angle  631 , e.g. but not limited to 30 degree. Wherein, the quantity of the plural second terminals  620  is the same as that of the plural open slots  601 , and the quantity is e.g. but not limited to five. 
     In addition, one end of each second terminal  620  is exposed outside the open slot  601  then further upwardly bent then downwardly bent. 
     The substrate  700  has plural first contact pads  710  and plural second contact pads  720  respectively exposed outside the substrate  700 , wherein the plural first contact pads  710  are disposed at the front portion of the substrate  700  and at the locations corresponding to the first solder ends  611  thereby allowing the plural first terminals  610  to be coupled with, the plural second contact pads  720  are disposed at the rear portion of the substrate  700  and at the locations corresponding to the second solder ends  621  thereby allowing the plural second terminals  620  to be coupled with, so as to form a USB connector. 
     Moreover, the substrate  700  is, e.g. but not limited to, a Chip-On-Board (COB) substrate or a printed circuit board substrate; in this embodiment, the COB substrate is adopted for illustration and not served as a limitation. The COB technology has properties of thin thickness, compact wiring and small area, so it is widely used in the package of LCD driving chips or NAND flash memories. 
     The quantity of the plural first contact pads  710  is e.g. but not limited to four, thereby forming a USB2.0 connector, wherein the plural first contact pads  710  are able to respectively transmit V BUS , D−, D+ and GND signals of USB2.0 specification. 
     The quantity of the plural second contact pads  720  is e.g. but not limited to five, wherein the plural second contact pads  720  are able to respectively transmit StdA_SSRX−, StdA_SSRX+, GND_DRAIN, StdA_SSTX− and StdA_SSTX+ signals of USB3.0 specification. 
     In addition, the front of each first terminal  610  is further formed with a second lead angle  640 , e.g. but not limited to 30 degree. The function of the first lead angle  631  and the second lead angle  640  is the same as that of the first lead angle  131  and the second lead angle  140 , therefore no further illustration is provided. 
     According to the USB connector provided by the present invention, the substrate  700  further includes a USB controller  730  and at least a flash memory  740  respectively coupled to the plural first contact pads  710  and the plural second contact pads  720 . The USB controller  730  and the flash memory  740  are installed on the substrate  700  with the Chip-On-Board (COB) means, wherein the Chip-On-Board technique is a conventional art therefore no further illustration is provided. 
     Referring to  FIG. 10  and  FIG. 11 , when being manufactured, firstly the plural first terminals  610  are disposed in front of the plural second terminals  620 , then integrally formed with the connector main body  600  for assembling as one piece; then the connector main body  600  is disposed on the substrate  700 , such that the front edge of the substrate  700  is aligned with the front edge of the connector main body  600  thereby allowing the first solder ends  611  of the plural first terminals  610  and the second solder ends  621  of the plural second terminals  620  to be respectively aligned with the plural first contact pads  710  and the plural second contact pads  720 , then respectively soldered on the plural first contact pads  710  and the plural second contact pads  720  with a Surface Mount Technology (SMT), thereby forming the USB connector of the present invention. According to the USB connector provided by the present invention, the four first terminals  610  can form a USB2.0 connector, the five second terminals  620  of the USB connector can form a USB3.0 connector, thereby respectively allowing a USB2.0 plug or a USB3.0 plug to be inserted. As such, the USB connector provided by the present invention has advantages of the substrate being prevented from squeezing the front edges of terminals of a USB plug, having thinner thickness, lower production cost and not limiting to be applied in certain models when being used. 
     Referring from  FIG. 12  to  FIG. 14 , wherein  FIG. 12  is a schematic exploded view showing the USB connector according to still one another preferred embodiment of the present invention;  FIG. 13  is a schematic view showing the assembly of the connector main body according to still one another preferred embodiment of the present invention; and  FIG. 14  is a schematic view showing the assembly of the USB connector according to still one another preferred embodiment of the present invention. 
     As shown in figures, the USB connector provided by the present invention comprises a connector main body  800  and a substrate  900 . 
     The connector main body  800  is made of an insulation material, e.g. but not limited to plastic, and is formed with plural open slots  801 , plural first terminals  810  and plural second terminals  820 , wherein every two open slots  801  are spaced by a slot column  802 , one end of the plural first terminals  810 , e.g. but not limited to the right end, are respectively disposed below the plural slot columns  802 , exposed outside the plural slot columns  802  then forwardly extended, the other ends, e.g. but not limited to the left end, are respectively and downwardly bent then horizontally extended, thereby forming a first solder end  811 . Wherein, the quantity of the plural first terminals  810  is the same as that of the plural slot columns  802 , and the quantity is e.g. but not limited to four. Moreover, the front of the connector main body  800  is formed with a first lead angle  831 , e.g. but not limited to 30 degree. 
     One end of the plural second terminals  820 , e.g. but not limited to the right end, are respectively provided in the plural open slots  801  and exposed outside the open slots  801 , the other ends, e.g. but not limited to the left end, are respectively and downwardly bent then horizontally extended, thereby forming a second solder end  821 . Wherein, the quantity of the plural second terminals  820  is the same as that of the plural open slots  801 , and the quantity is e.g. but not limited to five. 
     In addition, one end of each second terminal  820  is exposed outside the open slot  801  then further upwardly bent then downwardly bent. 
     The substrate  900  has plural first contact pads  910  and plural second contact pads  920  respectively exposed outside the substrate  900 , and the plural first contact pads  910  and the plural second contact pads  920  are, for example, staggeringly arranged. The plural first contact pads  910  and the plural second contact pads  920  are respectively served to allow the first solder ends  811  of the plural first terminals  810  and the second solder ends  821  of the plural second terminals  820  to be soldered thereon. 
     Moreover, the substrate  900  is, e.g. but not limited to, a Chip-On-Board (COB) substrate or a printed circuit board substrate; in this embodiment, the COB substrate is adopted for illustration and not served as a limitation. The COB technology has properties of thin thickness, compact wiring and small area, so it is widely used in the package of LCD driving chips or NAND flash memories. 
     The quantity of the plural first contact pads  910  is e.g. but not limited to four, thereby forming a USB2.0 connector, wherein the plural first contact pads  910  are able to respectively transmit V BUS , D−, D+ and GND signals of USB2.0 specification. The plural second contact pads  920  are, for example, staggeringly arranged with the plural first contact pads  910 , the quantity thereof is e.g. but not limited to five, wherein the plural second contact pads  920  are able to respectively transmit StdA_SSRX−, StdA_SSRX+, GND_DRAIN, StdA_SSTX− and StdA_SSTX+ signals of USB3.0 specification. 
     In addition, the front of each first terminal  810  is further formed with a second lead angle  840 , e.g. but not limited to 30 degree. The function of the first lead angle  831  and the second lead angle  840  is the same as that of the first lead angle  131  and the second lead angle  140 , therefore no further illustration is provided. 
     According to the USB connector provided by the present invention, the substrate  900  further includes a USB controller  930  and at least a flash memory  940  respectively coupled to the plural first contact pads  910  and the plural second contact pads  920 . The USB controller  930  and the flash memory  940  are installed on the substrate  900  with the Chip-On-Board (COB) means, wherein the Chip-On-Board technique is a conventional art therefore no further illustration is provided. 
     Referring to  FIG. 13  and  FIG. 14 , when being manufactured, firstly the plural first terminals  810  and the plural second terminals  820  are staggeringly arranged, then integrally formed with the connector main body  800  for assembling as one piece; then the connector main body  800  is disposed on the substrate  900  for allowing the first solder ends  811  of the plural first terminals  810  and the second solder ends  821  of the plural second terminals  820  to be respectively aligned with the plural first contact pads  910  and the plural second contact pads  920 , then respectively soldered on the plural first contact pads  910  and the plural second contact pads  920  with a Surface Mount Technology (SMT), thereby forming the USB connector of the present invention. According to the USB connector provided by the present invention, the four first terminals  810  can form a USB2.0 connector, the five second terminals  820  can form a USB3.0 connector, thereby respectively allowing a USB2.0 plug or a USB3.0 plug to be inserted. As such, the USB connector provided by the present invention has advantages of the substrate being prevented from squeezing the front edges of terminals of a USB plug, having thinner thickness, lower production cost and not limiting to be applied in certain models when being used. 
     As what is disclosed above, the USB connector of the present invention has following advantages: 1. having a USB2.0 connector and a USB3.0 connector having different transmission speed, for meeting the needs of USB connector having different transmission speed; 2. the front of the substrate being formed with a lead angle, so when being inserted with a USB plug, the lead angle allows the front edge of the substrate being in forward contact with terminals of the USB plug without squeezing the front edges of the terminals of the USB plug; 3. having plural first contact pads and plural second contact pads which can be arranged at the same side or oppositely arranged; and 4. Having thinner thickness, lower production cost and not limiting to be applied in certain models when being used. Therefore the USB connector provided by the present invention is novel compared to conventional USB connectors. 
     Many modifications and other embodiments of the inventions set forth herein will come to mind to one skilled in the art to which these inventions pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific examples of the embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.