Abstract:
The present device is a Universal Serial Bus (USB) connector which includes a first terminal set and a second terminal set. By increasing the width of a connection portion of a ground terminal of the second terminal set, and bending two pairs of the signal terminal within the second terminal set toward one side respectively and surrounding two sides of the ground terminal connecting section so as to let two pairs of the signal terminals away from the signal terminals in the first terminal set so as avoid the crosstalk interference caused by the first pair of the signals terminals in the second pair of the signal terminals and the third pair of the signal terminals to stabilize the transmission.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a field of USB connector, and more particularly relates to a USB connector able to avoid or reduce crosstalk interference. 
     BACKGROUND OF THE INVENTION 
     Universal Serial Bus (USB) connector is a serial bus standard of a connection between 3C device and a peripheral device and also a technique specification for an input/output interface. The USB connector is widely used in 3C device (for example an information communication device (such as a personal computer, a mobile device and so on), a camera device, a digital TV, a game machine and so on). Accordingly, the USB connector is divided into a USB receptacle connector and a USB plug connector. The USB receptacle connector is installed in the electronic devices described above and the USB plug connector is electrically connected to the connecting cable for information transmission. Therefore, the most signification advantage of the USB connector is hot-plugging and plug-and-play. Since USB 1.0 is released in 1996, the transmission speed thereof is 12 Mbit/s and USB 2.0 is improved to be 480 Mbit/s (Hi-speed). And now, USB 3.0 is 5 Mbit/s (super-speed) and the transmission speed is much faster and supported duplex transmission, fiber transmission and so on. 
     The design of the USB 3.0 is not to replace USB 2.0 and is to upgrade and assistant capability thereof. If the product includes a USB 2.0 interface, only USB 2.0 capability is required. Therefore, from a view of transmission interface technique, both are two different protocols. Accordingly, in order to downward compatibility, the hardware, software and connector for USB 2.0 and USB 3.0 are designed to be similar and USB 2.0 and USB 3.0 can be compatible to each other. 
     Please refer to  FIG. 1A , it is a view illustrating a USB receptacle connector in prior art. As shown in  FIG. 1A , a regular USB 3.0 receptacle connector includes a receptacle connector shell  901  and the shell  901  is surrounded by a receptacle connector tongue plate  902 . A top surface of the receptacle connector tongue plate  902  includes four USB 2.0 receptacle connector terminals (VBUS, D+, D− and GND) able to compatible with USB 2.0. In addition, it also includes five USB 3.0 receptacle connector terminals  904  (SSRX+, SSRX−, GND_DRAIN, SSTX+, and SSTX−) able to connect to the USB 3.0 interface. The USB 3.0 receptacle connector terminals are disposed in a front end of the receptacle connector tongue plate  902  and the USB 2.0 receptacle connector terminals are disposed in a back end of the USB 3.0 receptacle connector terminals  904 . 
     Thereafter, please refer to  FIG. 1B , it is a view illustrating a USB plug connector in prior art. The USB 3.0 connector includes a USB 3.0 plug connector  90  and a USB 3.0 receptacle connector  92 . As shown in  FIG. 1B , the USB 3.0 plug connector  92  includes a plug connector shell  921  surrounded by a plug connector tongue plate  922 . The top surface of the plug connector tongue plate  922  also includes four USB 2.0 plug connector terminals  923  (VBUS, D+, D− and GND) and five USB 3.0 plug connector terminal  924  (SSRX+, SSRX−, GND_DRAIN, SSTX+ and SSTX−). The different from the USB 3.0 plug connector  8  is that the USB 3.0 plug connector terminal  924  is disposed in a back end of the USB 2.0 plug connector terminal  923 . 
     Now, please refer to  FIG. 1C , it is a sectional view illustrating the connection between the USB receptacle connector and the USB plug connector in prior art. As shown in  FIG. 1C , when the USB 3.0 plug connector  90  is connected to the USB 3.0 plug connector  92 , the plug connector shell  92  is plugged into the receptacle connector shell  90  and a portion of the receptacle connector tongue plate  902  and the plug connector tongue plate  922  are overlapped without contacting to each other. The USB 2.0 receptacle connector terminal  903  is connected to the USB 2.0 plug connector terminal  923  and the USB 3.0 receptacle connector terminal  904  is connected and conducted to the USB 3.0 plug connector terminal  924  so as to transmit and receive signal. 
     Please refer to  FIG. 1D , it is a top transparent view illustrating the conventional USB receptacle connector. The USB 2.0 receptacle connector terminals  903  in the conventional USB 3.0 receptacle connector are arranged in parallel and the USB 3.0 receptacle connector terminals  904  are also arranged in parallel on top and bottom respectively. The four USB 2.0 receptacle connector terminals  903  are arranged alternatively in the cavities between the five USB 3.0 receptacle connector terminals  904 . In accordance to  FIG. 1A  and  FIG. 1D , the four USB 2.0 receptacle connector terminals  903  and the five USB 3.0 receptacle terminals  904  are very close to each other, and it is easy to have crosstalk interference in D+/D−, SSTX+/SSTX− and SSRX+/SSRX− so as to affect the quality of the transmission. Similarly, the same problem is occurred in the USB 3.0 plug connector  92 . 
     SUMMARY OF THE INVENTION 
     In order to solve the aforementioned problems, an object of the present invention is to a receptacle connector to reduce or avoid the crosstalk interference. 
     According to the object above, a receptacle connector comprising a tongue plate including a plurality of first terminal slots and a plurality of second terminal slots, a first terminal set with a plurality of terminals and each of the terminals includes a first contacting section, a first soldering section and a first connecting section for connecting the first contacting section and the first soldering section, the first terminal set disposed within the first terminal slots, a second terminal set with a plurality of terminals, each of the terminals includes a second contacting section, a second soldering section and a second connecting section for connecting the second contacting section and the second soldering section, wherein the receptacle connector is characterized in that the first terminal set comprises: a first pair of signal terminals disposed within two of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; a power terminal disposed within one of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; and a ground terminal disposed within one of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; wherein the power terminal and the ground terminal are disposed at two sides of the first pair of the signal terminals; the second terminal set comprises: a second pair of signal terminals divided into a second internal signal terminal and a second external signal terminal, and the second pair of the signal terminals are disposed within the second terminal slots of the tongue plate at right side of the ground terminal to expose the second contacting section on the tongue plate; and a third pair of signal terminals divided into a third internal signal terminal and a third external signal terminal, and disposed within the second terminal slots of the tongue plate at left side of the ground terminal to expose the second contacting section on the tongue plate; wherein the second contacting section of the ground terminal widens at two sides and covers the two first contacting sections of the first pair of the signal terminals. 
     The receptacle connector provided in the present invention can widen the second connecting section of the ground terminal within the tongue plate to let the second pair of the signal terminals and the third pair of the signal terminals away from the first pair of the signal terminal to avoid the crosstalk interference caused by the first pair of the signal terminals in the second pair of the signal terminals and the third pair of the signal terminals to stabilize the transmission. 
     Another object of the present invention is to provide a plug connector to reduce the crosstalk interference. 
     According to object above, the present invention provides a plug connector comprising: a tongue plate including a plurality of first terminal slots and a plurality of second terminal slots, a first terminal set with a plurality of terminals and each of the terminals includes a first contacting section, a first extending section, a first soldering section and a first connecting section, the first terminal set disposed within the first terminal slots, a second terminal set with a plurality of terminals, each of the terminals includes a second contacting section, a second extending section, a second soldering section and a second connecting section, the second terminal set disposed within the second terminal slots, wherein the receptacle connector is characterized in that the first terminal set comprises: a first pair of signal terminals disposed within the two of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; a power terminal disposed within the one of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; and a ground terminal disposed within one of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; wherein the power terminal and the ground terminal are disposed at two side of the first pair of the signal terminals; the second terminal set comprises: a ground terminal disposed within the one of the second terminal slots of the tongue plate to expose the second contact on the tongue plate; a second pair of signal terminals divided into a second internal signal terminal and a second external signal terminal, and the second pair of the signal terminals are disposed within two of the second terminal slots of the tongue plate at left side of the ground terminal to expose the second contacting section on the tongue plate; and a third pair of signal terminals divided into a third internal signal terminal and a third external signal terminal, and disposed within two of the second terminal slots of the tongue plate at right side of the ground terminal to expose the second contacting section on the tongue plate; wherein the second contacting section of the ground terminal widens at two sides and covers the two first contacting section of the first pair of the signal terminals. 
     According to the object above, the present invention provides a plug connector comprising: a tongue plate including a plurality of first terminal slots and a plurality of second terminal slots, a first terminal set with a plurality of terminals and each of the terminals includes a first contacting section, a first extending section, a first soldering section and a first connecting section, the first terminal set disposed within the first terminal slots, a second terminal set with a plurality of terminals, each of the terminals includes a second contacting section, a second extending section, a second soldering section and a second connecting section, the second terminal set disposed within the second terminal slots, wherein the receptacle connector is characterized in that the first terminal set comprises: a first pair of signal terminals disposed within two of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; a power terminal disposed within one of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; and a ground terminal disposed within one of the first terminal slots of the tongue plate to expose the first contacting section on the tongue plate; wherein the power terminal and the ground terminal are disposed at two side of the first pair of the signal terminals; the second terminal set comprises: a ground terminal disposed within one of the second terminal slots of the tongue plate to expose the second contact on the tongue plate; a second pair of signal terminals divided into a second internal signal terminal and a second external signal terminal, and the second pair of the signal terminals are disposed within two of the second terminal slots of the tongue plate at left side of the ground terminal to expose the second contacting section on the tongue plate; and a third pair of signal terminals divided into a third internal signal terminal and a third external signal terminal, and disposed within two of the second terminal slots of the tongue plate at right side of the ground terminal to expose the second contacting section on the tongue plate; wherein the second extending section of the ground terminal widens at two sides and covers the two first extending section of the first pair of the signal terminals. 
     The above-mentioned description of the present invention can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  is a view illustrating a USB receptacle connector in prior art; 
         FIG. 1B  is a view illustrating a USB plug connector in prior art; 
         FIG. 1C  is a sectional view illustrating the connection between the USB receptacle connector and the USB plug connector in prior art; 
         FIG. 1D  is a top transparent view illustrating the conventional USB receptacle connector 
         FIG. 2  is a exploded view illustrating the USB receptacle connector in the present invention; 
         FIG. 3A  and  FIG. 3B  are a top view and a sectional view of the tongue plate of the USB receptacle connector in the present invention; 
         FIG. 4 , it is a transparent top view of the first terminal set and the second terminal set of the USB receptacle connector in one embodiment of the present invention; 
         FIG. 5  is a transparent bottom view of the first terminal set and the second terminal set of the USB receptacle connector in second embodiment of the present invention; 
         FIGS. 6A and 6B  are a transparent bottom view and a plan view of the first terminal set and the second terminal set of the USB receptacle connector in third embodiment of the present invention; 
         FIG. 7A  is a transparent top view of the first terminal set and the second terminal set of the USB receptacle connector in a fourth embodiment of the present invention; 
         FIG. 7B  is a transparent bottom view illustrating the first terminal set and the second terminal set of the USB receptacle connector in a fifth embodiment of the present invention; 
         FIG. 8A  and  FIG. 8B  are comparison views between the first terminal set and the second terminal sec of the USB receptacle connector in the present invention; 
         FIG. 9  is an explored view illustrating the USB plug connector in the present invention; 
         FIG. 10  is a section side view of the tongue plate of the USB plug connector in the present invention; 
         FIG. 11  is a transparent top view illustrating the first terminal set and the second terminal set in the first embodiment of the present invention; 
         FIG. 12  is a transparent top view of the first terminal set and the second terminal set in the second embodiment of the present invention; and 
         FIG. 13  is a transparent top view of the first terminal set and the second terminal set in the third embodiment of the present invention 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof; and as shown by way of illustration specific embodiments in which the invention may be practiced. In this regard, directional terminology, such as “top,” “bottom,” “front,” “back,” “left,” “right,” “inside,” “outside,” “side,” etc., is used with reference to the orientation of the Figure(s) being described. As such, the directional terminology is used for purposes of illustration and is in no way limiting the present invention. 
     Firstly, please refer to  FIG. 2 , it is an explored view illustrating a USB receptacle connector in the present invention. As shown in  FIG. 2 , the USB receptacle connector  1  includes: a tongue plate  20  and a top surface thereof consists of a first surface  2011  and a second surface  2031 . A plurality of first terminal slots  2013  are formed on the first surface  2011  and a plurality of second terminal slots  2033  are formed on the second surface  2031 . The first terminal set  30  consists of a plurality of terminals and each of the terminals includes a first contacting section  301 , a first soldering section  303  and a first connecting section  305  for connecting the first contacting section  301  and the first soldering section  303 . The first terminal set  30  is disposed within the first terminal slots  2013 . The second terminal set  40  consists of a plurality of terminals and each of the terminals includes a second contacting section  401 , a second soldering section  403  and a second connecting section  405  for connecting the second contacting section  401  and the second soldering section  403 . The second terminal set  40  disposes within the second terminal slots  2033 . 
     The second terminal set  40  exposes the second contacting section  401  when the second terminal set  40  is disposed within the second terminal slots  2033 . The first soldering section  303  bends upward to form a first soldering pin  3031  and the second soldering section  403  bends upward to form a second soldering pin  4031 . A shell body  10  includes an open end  101  and covers the tongue plate  20 . The top and bottom walls  103  at the internal of the tongue plate  20  and the shell body  10  keeps an interval from each other. The first contacting section  301  and the second contacting section  401  are disposed near the open end  101 . A rear organizer  12  covers the back end of the tongue plate  20  and includes a plurality of holes to contain the first soldering pin  3031  and the second soldering pin  4031  so as to make the first soldering pin  3031  and the second soldering pin  4031  protrude upward from the rear organizer  12 . The first contacting section  301  is a protruding contact point and the second contacting section  401  is a flat contact point. 
     Now, please refer to  FIG. 3A  and  FIG. 3B , which are a top view and a sectional view of the tongue plate of the USB receptacle connector in the present invention. As shown in  FIG. 3A , a plurality of the first contacting sections  301  exposes on the first surface  2011  of the tongue plate  20 . The first contacting sections  301  are arranged and separated in parallel with a first interval a 1 . A plurality of the second contacting sections  401  expose on the second surface  2031  of the tongue plate  20 . The second contact contacting sections  401  are arranged and separated in parallel with a second interval a 2 . There is a third interval a 3  between the first contacting sections  301  and the second contacting sections  401  to seperate the first contacting sections  301  from the second contacting sections  401 . 
     In addition, each of the first contacting sections  301  is disposed above an interval formed between terminals of the second terminal set  40 , especially between each the second contacting section  401  and each second connecting section  405 , to avoid the first contacting sections  301  overlapping the second contacting sections  401  and the second connecting sections  405  of the second terminal so as to reduce and avoid the crosstalk interference caused by a first pair of signal terminals  32  in a second pair of signal terminals  44  and a third pair of signal terminals  46 . 
     In addition, since the first terminal set  30  is close to the first surface  2011  of the tongue plate  20 , the first connecting section  305  can also expose on the top surface  2011  of the top plate  201 . In the present embodiment, the first contacting sections  301  are arranged in parallel with a first interval a 1  therebetween to separate each first contacting section  301 . The second contacting sections  401  are also arranged in parallel with a second interval a 2  therebetween to separate each second contacting section  401 . There is a third interval a 3  between each first contacting section  301  and each second contacting section  401 . It should be noted that the description above is an example and it is not to limit the present invention. In other words, the interval between the first contacting sections  301 , between the second contacting sections  401  or between first contacting sections  301  and the second contacting sections  401  may not be the same. 
     Please refer to  FIG. 3B , since the second terminal set  40  within the tongue plate  20  is disposed at the bottom of the first terminal set  30 , the second contacting sections  401  bend upward to expose when the second contacting sections  401  of the second terminal set  40  are required to expose over the contacting surface  22  of a free end  201 . Since the first terminal set  30  is on top, the second contacting sections  401  can expose on the first surface  2011  of the tongue plate  20  directly. The first soldering sections  303  of the first terminal set  30  and the second soldering sections  403  of the second terminal set  40  bend upward to be the first soldering pins  3031  and the second soldering pins  4031  for electrically connecting to external devices. The terminals in the first terminal set  30  and the second terminal set  40  are made integrally by copper integrated or installed with the tongue plate  20 . 
     Please refer to  FIG. 4 , it is a transparent top view of the first terminal set and the second terminal set of the USB receptacle connector in one embodiment of the present invention. As shown in  FIG. 4 , the first terminal set  30  includes the first pair of signal terminals  32  arranged in parallel and disposed within two of the first terminal slots  2013  of the tongue plate  20  to expose the first contacting sections  301 ′ (as shown in  FIG. 3A ) on the first surface  2011  of the tongue  20 . The first pair of signal terminals  32  are half-duplex differential signal lines (D+/D−) for transmitting or receiving signal in one direction. A power terminal  34  is arranged in parallel to the first pair of signal terminals  32  and disposed within one of the first terminal slots  2013  of the tongue plate  20  to expose the first contacting section  301 ″ (as shown in  FIG. 3A ) on the first surface  2011  of the tongue plate  20 . In accordance with the top view, the power terminal  34  is disposed at right side of the first pair of signal terminals  32  to provide power. In accordance with the bottom view, the power terminal  34  is disposed at left side of the first pair of signal terminals  32 . The ground terminal  36  is arranged in parallel to the first pair of the signal terminals  32  and disposed within one of the first terminal slots  2013  of the tongue plate  20  to expose the first contacting section  301 ′″ (as shown in  FIG. 3A ) on the first surface  2011  of the tongue plate  20 . In accordance with the bottom view, the ground terminal  36  is disposed at left side of the first pair of signal terminals  32  to provide a grounding path for electro static discharge so as to avoid the damage of the electronic devices because of the static electricity. In accordance with the top view, the ground terminal  36  is disposed at right side of the first pair of signal terminals. It should be noted that the first pair of signal terminals  32 , the power terminal  34  and the ground terminal  36  in the first terminal set  30  are for providing USB 2.0 contact points. 
     Please still refer to  FIG. 4 , the second terminal set  40  includes a ground terminal  42  in parallel to the first terminal set  30  and disposed within one of the second terminal slots  2033  of the tongue plate  20  to expose the second contacting sections  401 ′″(as shown in  FIG. 3A ) on the second surface  2031  of the tongue plate  20 . The ground terminal  42  is used to provide a reference voltage level and to provide a standard voltage level for the whole circuit. A second pair of signal terminals  44  are parallel to the first terminal set  30  and disposed within two of the second terminal slots  2033  of the tongue plate  20 . In accordance with the bottom view, the second pair of signal terminals  44  are disposed at right side of the ground terminal  42  to expose the second contacting section  401 ″ (as shown in  FIG. 3A ) on the second surface  2031  of the tongue plate  20 . The second pair of signal terminals  44  are simplex differential action signal lines (SSTX+/SSTX−) to transmit signal in one direction. A third pair of signal terminals  46  are arranged in parallel to the first terminal set  30  and disposed within two of the second terminal slots  2033  of the tongue plate  20 . In accordance with the bottom view, the third pair of signal terminals  46  are disposed at left side of the ground terminal  42  to expose the second contacting sections  401 ′″ (as shown in  FIG. 3A ) on the second surface  2031  of the tongue plate  20 . The third pair of signal terminals  46  are simplex differential signal line (SSRX+/SSRX−) to receive signal in one direction. It should be noted that the ground terminal  42 , the second pair of signal terminals  44  and the third pair of signal terminals  46  in the second terminal set  40  are used for providing the USB 3.0 contact points and each terminal thereof is consisted of the second contacting section  401 , the second connecting section  405  and the second soldering section  403 . 
     The width of the connecting section  421  of the ground terminal  42  is greater than the width of the first pair of signal terminals  32 . As shown in the bottom view in  FIG. 4 , the width of the connecting section  421  (i.e. the second contacting section  405 ) of the ground terminal  42  is greater than the width of the first pair of signal terminals  32  and a portion thereof covers the first pair of signal terminals  32 . The connecting section  421  in the of the ground terminal  42  in present invention covers a portion of the first connecting section  305  (as shown in FIG.  2 )of the first pair of signal terminals  32  to expose a portion of the first contacting sections  301 . The second pair of signal terminals  44  are divided into a second internal signal terminal  441  and a second external signal terminal  443 . The third pair of the signal terminals  46  are divided into a third internal signal terminal  461  and a third external signal terminal  463 . 
     Since the width of the ground terminal  42  within the tongue plate  20  is increased, it is necessary to extend the shape of the second pair of signal terminals  44 . The second internal connecting section  4411  (i.e. the second connecting section  405 ) of the second internal signal terminal  441  bends and surrounds at right side of the connecting section  421  of the ground terminal  42  so as to form an interval to avoid overlapping therebetween. The second external connecting section  4431  of the second external connecting section  443  is a straight line shape and shift to right side in parallel to the second internal connecting section  4411 . Similarly, the third internal connecting section  4611  (i.e. the second connecting section  405 ) of the third internal signal terminal  461  at left side of the ground terminal  42  bends to one side and surrounds at left side of the connecting section  421  of the ground terminal  42  to form an interval to avoid overlapping therebetween. The third external connecting section  4631  of the third external signal terminal  463  is a straight line shape and shift to left side in parallel to the third internal connecting section  4611 . The connecting section  421  within the tongue plate  20  is widened to make the second pair of signal terminals  44  and the third pair of signal terminal  46  bend to one side and surround the connecting section  421  so as to avoid the crosstalk interference caused by the first pair of signal terminals  32  in the second pair of signal terminals  44  and the third pair of signal terminals  46 . 
     Now, please refer to  FIG. 5 , it is a transparent bottom view of the first terminal set and the second terminal set of the USB receptacle connector in second embodiment of the present invention. As shown in  FIG. 5 , the different of the second embodiment from the first embodiment is that the connecting section  421  of ground terminal  42  is the same as the width of the first pair of signal terminals  32 . The rest of the components in the second embodiment are the same as thereof in the first embodiment and the description thereof is omitted herein. The function is similar to avoid the crosstalk interference caused by the first pair of signal terminals  32  in the second pair of signal terminals  44  and the third pair of signal terminals  46 . 
     Now, please refer to  FIGS. 6A and 6B , which are a transparent bottom view and a plan view of the first terminal set and the second terminal set of the USB receptacle connector in third embodiment of the present invention. As shown in  FIG. 6A , the different of the third embodiment from the first embodiment is that the connecting section  421  within the tongue plate  20  partially covers the first pair of the signal terminals  32 . The two covered side walls  4211  and  4213  of the connecting section  421  bend toward the direction of the first pair of the signal terminals  32 . 
     As shown the sectional view in  FIG. 6B , the two side walls  4211  and  4213  of the connecting section  421  bend toward the direction of the first pair of the signal terminal  32  and covers an area in the first pair of the signal terminals  32  to avoid the crosstalk interference caused by the first pair of the signal terminals  32  in the second pair of the signal terminals  44  and the third pair of the signal terminals  46 . The rest of the components in the third embodiment are the same as thereof in the first embodiment and the description thereof is omitted herein. 
     Please refer to  FIG. 7A , it is a transparent top view of the first terminal set and the second terminal set of the USB receptacle connector in a fourth embodiment of the present invention. As shown in  FIG. 7A , a portion of the connecting section  421  (i.e. the second connecting section  405  of the ground terminal  42 ) of the ground terminal  42  in the fourth embodiment widens to cover a portion of the first pair of the signal terminal  32  and the width thereof is less than the width of the first pair of the signal terminal  32 . The second internal signal terminal  441  and the third internal signal terminal  461  are straight line shape and parallel to the ground terminal  42 . A portion of the second external section  4431  of the second external signal terminal  443  and the third external connecting section  4631  of the third external signal terminal  463  shift to one side and parallel to the second internal signal terminal  441  and the third internal signal terminal  461 . By widening the connecting section  421 , it is to reduce or avoid the crosstalk interference in the second pair of the signal terminal  44  and the third pair of the signal terminal  46  caused by the first pair signal terminal  32 . 
     Please refer to  FIG. 7B , it is a transparent bottom view illustrating the first terminal set and the second terminal set of the USB receptacle connector in a fifth embodiment of the present invention. As shown in  FIG. 7B , the difference of the fifth embodiment from the fourth embodiment is that there is an alar section  4413  extending to the second external signal terminal  443  in the second internal connecting section  4411  of the second internal signal terminal  441  and away from the second external signal terminal  443  with an interval. And an alar section  4613  extends to the third external signal terminal  463  in the third internal connecting section  4611  of the third internal signal terminal  461  and is away from the third external signal terminal  463  with an interval. The rest of the components in the fifth embodiment are the same as thereof in the fourth embodiment and the description is omitted herein. The function thereof is the same as to avoid the crosstalk interference caused by the first pair of the signal terminals  32  in the second pair of the signal terminals  44  and the third pair of the signal terminals  46 . 
     Please refer to  FIG. 8A  and  FIG. 8B , which are comparison views between the first terminal set and the second terminal set of the USB receptacle connector in the present invention. As shown in  FIG. 8A  and  FIG. 1 , the width of the connecting section  421  in the present invention is D, and the width of the first pair of the signal terminals  32  is d 1 . According to figures, D is greater than d 1 . In addition, the interval between the side wall  4211  of connecting section  421  and the second pair of signal terminal  44  is d 3 , and the interval between side wall  4213  of the connecting section  421  and the third pair of signal terminals  46  is d 2 , and the width of d 2  and d 3  are greater than 0.4 mm. 
     In accordance with the first, second, third, fourth and fifth embodiments of the USB receptacle connector in the present invention, the width of the connecting section  421  within the tongue plate  20  of the USB receptacle connector  1  is greater than the width of the first pair of the signal terminals  32  to fully or partially cover the connecting sections of the first pair of the signal terminals  32  to avoid the crosstalk interference caused by the first pair of the signal terminals  32  in the second pair of the signal terminals  44  and the third pair of the signal terminals  46  so as to stabilize the transmission. 
     It is necessary to have a corresponding USB plug connector  5  for the USB receptacle connector  1 . Please refer to  FIG. 9 , it is an explored view illustrating the USB plug connector in the present invention. The USB plug connector  5  includes a tongue plate  60 , a first terminal set  70 , and a second terminal set  80 . The tongue plate  60  includes a bottom plate  601  and a top plate  603 . The top surface  6011  of the bottom plate  601  includes a plurality of first terminal slots  6013  and the bottom surface  6031  of the top plate  603  includes a plurality of second terminal slots  6033 . Each of the terminals in the first terminal set  70  includes a first contacting section  701 , a first extending section  702 , a first connecting section  703 , and a first soldering section  704 . The first terminal set  70  is disposed within the first terminal slots  6013  and the first soldering sections  704  extend from the rear ends of the first terminal slots  6013 . Each of the terminals in the second terminal set  80  includes a second contacting section  801 , a second extending section  802 , a second connecting section  803  and a second soldering  804 . The second terminal set  80  is disposed within the second terminal slots  6033  and the second contacting sections  801  and the second soldering contacting sections  804  extend from the front ends and the rear ends of the second terminal slots  6033 . 
     When the bottom plate  601  covers the top surface  6031  of the top plate  603 , the first contacting sections  701  and the second contacting sections  802  are exposed. A shell body  50  includes an open end  501  and covers the tongue plate  60  and the terminal side of the first contacting sections  701  and the second contacting sections  801  keep an interval from the side wall  503  of the shell body  50  and disposed at the open end  501 . The first contacting sections  701  are plane contact points and the second contacting sections  801  are arch shape protruding contact points. Although the tongue  60  in the present invention is made by overlapping the bottom plate  601  and the top plate  603 , it is not limited herein. The tongue plate  60  can be an integrated structure instead of the structure overlapped by the bottom plate  601  and the top plate  603 . 
     Now, please refer to  FIG. 10 , it is a section side view of the tongue plate of the USB plug connector in the present invention. As shown in  FIG. 10 , when the first terminal set  70  and the second terminal set  80  are disposed in the tongue plate  60 , the first terminal set  70  is under the second terminal set  80 . Each first contacting section  701  of the first terminal set  70  extends and bends toward one end of the first extend section  702 , and a height difference formed between the first extend section  702  and the first contacting section  701 . The first connecting section  703  extends and bends toward another end of the first extend section  702 , and a height different formed between the first extend section  702  and the first connecting  703 . Therefore, each first extend section  702  becomes a U shape structure. The second contacting sections  801  and the second extend sections  802  of the second terminal set  80  are disposed above the first extend sections  702  and the second contacting sections  801  and the first contacting sections  701  keep at the same level. Each second connecting section  803  extends and bends toward one end of the second extend section  802  and a height difference formed between the second extend section  802  and the section connecting section  803 . The first terminal sides of the first contacting sections  701  and the second contacting sections  801  on the tongue plate  60  keep intervals from side wall  503  of the shell body  50  for plugging in the tongue plate  60  of the USB receptacle connector  1  so as to let the terminals contact to each other. 
     Please refer to  FIG. 11 , it is a transparent top view illustrating the first terminal set and the second terminal set in the first embodiment of the present invention. As shown in  FIG. 11 , the first terminal set  70  includes a first pair of signal terminals  72  parallel to each other and disposed within two of the first terminal slots  6013  to expose the first contacting sections  701 ′ on the top surface  6011  of the bottom plate  601 . The first pair of the signal terminals  702  are half-duplex differential action signal lines (D+/D−) for transmitting or receiving signal in one direction. A power terminal  74  is parallel to the first pair of the signal terminals  72  and disposed within one of the first terminal slots  6013  of the tongue  60  to expose the first contacting section  701 ″ on the top surface  6011  of the top plate  603 . According to the transparent top view, the power terminal  74  is disposed at left side of the first pair of the signal terminals  72  for providing power. A ground terminal  76  is parallel to the first pair of the signal terminals  72  and disposed within one of the first terminal slots  6013  of the tongue plate  60  to expose the first contacting section  701 ′″ on the top surface  6011  of the top plate  603 . According to the transparent top view, the ground terminal  76  is disposed at right side of the first pair of the signal terminals  72  for providing a discharge path of the static electricity so as to avoid the damage of the electronic components. It should be noted that the first pair of the signal terminals  72 , the power terminal  74  and the ground terminal  76  in the first terminal set  70  are the USB 2.0 contact points. 
     Please still refer to  FIG. 11 , the second terminal set includes a ground terminal  82  parallel to the first terminal set  70  and disposed within one of the second terminal slots  6033  of the tongue plate  60  to extend from the front end of the bottom plate  601  of the second contacting section  801 ′. A ground terminal  82  is used as a reference point for voltage level to provide a baseline potential. A second pair of signal terminals  84  are parallel to the first terminal set  70  and disposed within two of the second terminal slots  6033  of the tongue plate  60 . According to the transparent top view, the second pair of the signal terminals is disposed at left side of the ground terminal  82  to extend the second contacting section  801 ′″ at front end of the bottom plate  601 . The second pair of the signal terminals  84  are simplex differential action signal lines to transmit signal in one direction. A third pair of signal terminals  86  are parallel to the first terminal set  70  and disposed within two of the second terminal slots  6033  of the tongue plate  70 . According to the transparent top view, the third pair of the signal terminal  86  is disposed at right side of the ground terminal  82  to extend the second contacting sections  801 ′″ in front end of the bottom plate  601 . The third pair of the signal terminals  86  are simplex differential signal lines to transmit signal in one direction. It should be noted that the ground terminal  82 , the second pair of the signal terminals  84  and the third pair of the signal terminal  86  in the second terminal set  86  are used for providing USB 3.0 contact points. 
     The ground terminal  82  is disposed at the connecting section  821  (i.e. the second connecting section  803  of the ground terminal  82 ) and widens at two sides. A portion of the ground terminal  82  covers the first signal terminal connecting sections  721  of the first signal terminal  72 . Each of the first signal terminals  72  shifts internally, and the first signal terminal connecting sections  721  are disposed within the covering area of the connecting section  821 . In accordance with the structure above, it is to avoid the crosstalk interference caused by the first pair of the signal terminals  72  in the second pair of the signal terminals  84  and the third pair of the signal terminals  86 . 
     Please refer to  FIG. 12 , it is a transparent top view of the first terminal set and the second terminal set in the second embodiment of the present invention. As shown in  FIG. 12 , the difference of the USB plug connector  5  in the second embodiment from the previous first embodiment is that the extending section  823  (i.e. the second extending section  803 ) of the ground terminal  82  widens at two sides to cover the first signal terminal extending sections  723  (i.e. the first extending section  702 ) of the first pair of the signal terminals  72 . Each of the first signal terminal extending sections  723  shifts internally to let the first signal terminal extending sections  723  in the covering area of the extending section  823 . In accordance with the structure above, it is to avoid the crosstalk interference caused by the first pair of the signal terminals  72  in the second pair of the signal terminals  84  and the third pair of the signal terminals  86 . The rest of the components in the second embodiment are the same as thereof in the first embodiment, the description thereof is omitted herein. 
     Please refer to  FIG. 13 , it is a transparent top view of the first terminal set and the second terminal set in the third embodiment of the present invention. As shown in  FIG. 13 , the difference of the USB plug connector  5  in the third embodiment from the previous first and second embodiment is that the connecting section  821  of the ground terminal  82  is connected to a portion of the extending section  823  and widens at two sides to partially cover the connecting area where connecting section  721  of the first pair of the signal terminal  72  connected to a portion of the first signal terminal extending section  723 . The connecting area where the connecting section  721  of the first pair of the signal terminal  72  connected to a portion of the first signal terminal extending section  723  shifts internally to let the connecting area where the connecting section  721  of the first pair of the signal terminal  72  connected to a portion of the first signal terminal extending section  723  in the covering area where the connecting section  821  of the ground terminal  82  connected to a portion of the extending section  823 . In accordance with the structure above, it is to avoid the crosstalk interference caused by the first pair of the signal terminals  72  in the second pair of the signal terminals  84  and the third pair of the signal terminals  86 . The rest of the components in the third embodiment are the same as thereof in the first embodiment, the description thereof is omitted herein. 
     According to the first, second, third and fourth embodiments of the USB plug connector  5  in the present invention, the connecting section  821  and the extending section  823  within the tongue plate  60  of the USB plug connector  5  are widened to reduce or avoid the crosstalk interference caused by the first pair of the signal terminals  72  in the second pair of the signal terminals  84  and the third pair of the signal terminals  86  so as to stabilize the transmission. 
     As described above, the present invention has been described with preferred embodiments thereof and it is understood that many changes and modifications to the described embodiments can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.