201029279 六、發明說明： 【發明所屬之技術領域】 本創作涉及一種電連接器’尤其涉及一種具有可傳輸高頻訊號之電 連接器。 【先前技術】 與本創作相關之習知技術可參閲於2007年1月9日發行之日本意匠 ' 專利登錄第D1290558號，該專利揭示了一種C型HDMI連接器，其包 括：絕緣本體、固持於絕緣本體上之19根導電端子及包覆於絕緣本體 週邊之遮蔽殼體。其中，所述絕緣本體設有水平延伸之舌板，所述舌 板之下表面設有複數間隔排列的端子收容槽。所述導電端子設有與絕 ^ 緣本體相固持之固持部、延伸出絕緣本體之焊接部及收容於端子收容 槽内之接觸部。從HDMI連接器之對接面向内觀察，所述導電端子之接 觸部呈一排水平設置於舌板之下表面。 根據HDMI協會發佈之HDMI標準來看，所述19根導電端子包括用 以傳輸數據之三對差分訊號端子(D+、D-)、分別與每對差分訊號端子 配合的二根接地端子(G)、一對時鐘訊號端子(Clock+、Clock-)、與該對 時鐘訊號端子配合之接地端子(G) ’除此之外，亦包括CEC訊號端子、 SCL訊號端子、SDA訊號端子、Reserved訊號端子、+5V電源端子及熱 插拔偵測端子等。 Ο 由以上分析得知，習知的c型HDMI連接器導電端子對應之功能複 雜多樣、對應之晶片設計同樣很複雜，由此導致使用該種類型之連接 器介面成本較高。另，相鄰兩對差分訊號端子(D+、D-)之間僅有一根 接地端子(G)，該兩對差分訊號端子(CH_、〇_)之間容易產生比較大的串 擾(Cross-talk)。 所以’有必要對習知的電連接器進行改良以克服上述缺陷。 【發明内容】 鐾於上述内谷’本創作之目的在於提供一種成本較低之電連接器。 本創作之另一目的在於提供一種抗干擾能力較強之電連接器。 ^為達成前述目的，本創作電連接器，係包括：本體部、固定於本體 部上之複數導電端子及包覆於本體部週邊之金屬遮蔽殼體，所述遮蔽 3 201029279 殼體設有用以收容對接插頭之收容空間，所述本體部設有延伸入收容 空間内之舌板’所述導電端子包括平板狀之接觸部，所述接觸部呈一 排佈置於舌板之同一側，所述導電端子僅包括接地端子及複數對差分 訊號端子兩種類型。 為達成上述另一目的，本創作採用如下技術方案：一種電連接器， ' 其包括：本體部、固定於本體部上之複數導電端子及包覆於本體部週 邊之金屬遮蔽殼體’所述遮蔽殼體設有用以收容對接插頭之收容空 間，所述本體部設有延伸入收容空間内之舌板，所述導電端子設有延 伸至舌板之接觸部’所述接觸部呈一排佈置於舌板之同一側，所述導 電端子僅包括複數接地端子及複數對差分訊號端子，其中相鄰兩對差 Φ 分訊號端子之間設有兩個接地端子。 與習知技術相比，本創作具有如下有益效果：首先，本創作電連接 器之導電端子僅包括接地端子及差分訊號端子兩種類型，導電端子對 應之功能設計比較簡單’設計容易且成本較低；另，相鄰兩對差分訊 號端子之間設有兩個接地端子’從而拉大了該兩對差分訊號端子之間 的距離’遮罩效果較好，抗干擾能力較強。 【實施方式】 請參閱第一圖至第五圖所示，本創作電連接器100包括本體部1、 固持於本體部1上之複數導電端子2及包覆本體部1之金屬遮蔽殼體3， ^ 所述遮蔽殼體3設有用以收容對接插頭(未圖示)之收容空間30。 所述本體部1包括基部11及向前突出基部11之舌板12。所述舌板12 沿水平方向延伸，其包括上表面121及與上表面121相對之下表面122， 所述下表面〗22設有複數間隔排列之端子收容槽1221，用以將各導電端 子2間隔開以防止相互接觸而產生串擾。於本實施方式中，所述本體部 1係由絕緣材料製成，所述本體部1與舌板12—體延伸而成。然，於其 他實施方式中，所述舌板12可與基部11分開設置，然後係以組裝之方 式結合在一起。 請參閱第三圖及第五圖所示，所述導電端子2僅包括接地端子及複 數對差分訊號端子兩種類型，所述複數對差分訊號端子包括四對差分 訊號端子，其中，所述四對差分訊號端子包括第一對差分訊號端子21、 201029279 第二對差分訊號端子22、第三對差分訊號端子23及第四對差分訊號端 子24。所述每一對差分訊號端子均包括一個正訊號端子及一個負訊號 端子。所述每一對差分訊號端子21，22,23,24位於相鄰兩個接地端子〇之 間，從而減弱相鄰之兩對差分訊號端子之間的干擾。所述第一對、第 二對及第三對差分訊號端子21,22,23用以單向傳輸數據；而第四對差分 訊號端子24為混合訊號端子(Hibrid Channel)，用以雙向傳輸數據，以 . 達到更快的傳輪速度。另，本創作的導電端子2共13根，數目較少，進 而可以減小電連接器100的體積及用料成本，以適應電子產品小型化的 發展趨勢。另’所述導電端子2僅包括兩種類型’導電端子2對應的功 能相對簡單、不複雜，進而便於與之相配合的電路板或晶片的設計， • 便於電連接器100的推廣利用。除此之外，所述僅13根導電端子2中就 包括四對差分訊號導電端子21，22,23,24，能夠達到更快的數據傳輸速 度。 請參閱第三圖所示’從結構上看，每一導電端子2設有固定於與基 部11上之固持部25、自固持部25向前延伸且被收容於端子收容槽1221 内之平板狀接觸部26、自固持部25彎折延伸之焊接部27及連接固持部 25與焊接部27之連接部28，所述接觸部26及焊接部27均沿水平方向延 伸’所述連接部28沿豎直方向延伸。請參閱第二圖所示，從電連接器 100之對接方向上看’所述接觸部26沿水平方向上排列為一排。並且所 述接觸部26位於舌板12的同一側(於本實施方式中為舌板〗2之下側），以 ® 使舌板12的厚度減小，電連接器100的總體厚度也得以降低。所述接觸 部26向下暴露於收容空間30内，以方便與對接插頭電性連接。所述焊 接部27係以表面安裝的方式焊接於電路板上。 在本實施方式中，所述導電端子2係由金屬料帶衝壓而成，並以 組裝的方式安裝於本體部1上。然，在其他實施方式中，所述舌板12 可以用印刷電路板(PCB)代替，此時，可以利用在印刷電路板之表面設 置金手指代替上述接觸部26，並用轉接端子的一端電性連接於接觸部 26上，而轉接端子的另一端焊接於印刷電路板上，同樣可以達成本創 作的目的。 所述遮蔽威體3係由一片金屬材料衝麼、弯折形成。所述遮蔽殼 5 201029279 體3包括前殼體38及與前殼體38相扣持的後殼體39，其中，前殼體38 包括頂壁31、底壁32及兩側壁33，所述收容空間3〇位於頂壁31及底壁 32之間，所述底壁32兩端與兩側壁33分別用斜面34連接。所述斜面34 用以防止其他不匹配的插頭插入該收容空間3〇内。 請參第六圖所示，作為本創作電連接器100第一實施例的進一步 改進，在本創作的第二實施例中，所述第三對差分訊號端子23與第四 對差分訊號端子24之間設有兩個接地端子G1，G2。所述接地端子G1，G2 :別與第二、第四對差分訊號端子23,24相鄰設置。在這種情況下，可 以增大第三及第四對差分訊號端子23,24之間距離，同時，兩個接地端 子G1，G2可以使第三及第四對差分訊號端子2324之間具有更小的干 ❹ 擾。 综上所述’本創作夺已符合發明專利要件，爰依法提出專利申請。 惟，以上所述者僅為本發明之較佳實施方式，本發明之範圍並不以上 述實施方式為限，舉凡熟習本案技藝之人士援依本發明之精神所作之 等效修飾或變化，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 第一圖係本創作電連接器之立體組合圖。 第二圖係本創作電連接器之前視圖。 第三圖係本創作電連接器之立體分解圖。 第四圖係本創作電連接器的另一角度之立體分解圖。 © 第五圖係本創作電連接器的導電端子之立體組合圖。 第六圖係本創作電連接器另一實施方式中導電端子之立體圖。 【主要元件符號說明】 電連接器 100 本體部 1 基部 11 舌板 12 上表面 121 下表面 122 端子收容槽 1221 導電端子 2 第一對差分訊號端子21 弟一對差分訊號端子 22 第三對差分訊號端子 23 第四對差分訊號端子 24 接地端子 G，G1，G2 固持部 25 6 201029279 接觸部 26 焊接部 27 連接部 28 遮蔽殼體 3 收容空間 30 頂壁 31 底壁 32 兩側壁 33 斜面 34 前殼體 38 後殼體 39 參 7201029279 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an electrical connector', and more particularly to an electrical connector having a high-frequency transmission signal. [Prior Art] The prior art related to the present invention can be referred to Japanese Patent Application No. D1290558, issued on Jan. 9, 2007, which discloses a C-type HDMI connector including: an insulative body, 19 conductive terminals held on the insulating body and a shielding shell covering the periphery of the insulating body. Wherein, the insulating body is provided with a horizontally extending tongue plate, and the lower surface of the tongue plate is provided with a plurality of terminal receiving grooves arranged at intervals. The conductive terminal is provided with a holding portion that is held by the main body, a welded portion that extends out of the insulating body, and a contact portion that is received in the terminal receiving groove. Viewed from the abutting side of the HDMI connector, the contacts of the conductive terminals are horizontally disposed in a row on the lower surface of the tongue. According to the HDMI standard issued by the HDMI Association, the 19 conductive terminals include three pairs of differential signal terminals (D+, D-) for transmitting data, and two ground terminals (G) respectively for mating with each pair of differential signal terminals. a pair of clock signal terminals (Clock+, Clock-), and a ground terminal (G) matching the pair of clock signal terminals', in addition to CEC signal terminals, SCL signal terminals, SDA signal terminals, Reserved signal terminals, +5V power terminal and hot plug detection terminal. Ο From the above analysis, the functions of the conventional c-type HDMI connector conductive terminals are complex and the corresponding chip design is also complicated, which results in a higher cost of using this type of connector interface. In addition, there is only one ground terminal (G) between two adjacent pairs of differential signal terminals (D+, D-), and the two pairs of differential signal terminals (CH_, 〇_) are prone to relatively large crosstalk (Cross-talk). ). Therefore, it is necessary to modify the conventional electrical connector to overcome the above drawbacks. SUMMARY OF THE INVENTION The purpose of the present invention is to provide a lower cost electrical connector. Another object of the present invention is to provide an electrical connector with strong anti-interference capability. In order to achieve the above objective, the present invention includes a main body portion, a plurality of conductive terminals fixed on the main body portion, and a metal shielding shell covering the periphery of the main body portion, and the shielding 3 201029279 housing is provided for a receiving space for receiving the mating plug, wherein the body portion is provided with a tongue plate extending into the receiving space. The conductive terminal comprises a flat contact portion, and the contact portions are arranged in a row on the same side of the tongue plate. The conductive terminals include only two types of ground terminals and a plurality of pairs of differential signal terminals. In order to achieve the above other object, the present invention adopts the following technical solution: an electrical connector, 'which includes: a body portion, a plurality of conductive terminals fixed to the body portion, and a metal shielding case covered around the body portion The shielding case is provided with a receiving space for receiving the mating plug, the body portion is provided with a tongue plate extending into the receiving space, and the conductive terminal is provided with a contact portion extending to the tongue plate. The contact portions are arranged in a row. On the same side of the tongue plate, the conductive terminal includes only a plurality of ground terminals and a plurality of pairs of differential signal terminals, wherein two adjacent ground terminals are provided between the two pairs of differential Φ signal terminals. Compared with the prior art, the present invention has the following beneficial effects: Firstly, the conductive terminals of the present electrical connector only include two types of grounding terminals and differential signal terminals, and the functional design corresponding to the conductive terminals is relatively simple, the design is easy and the cost is relatively simple. In addition, two grounding terminals are provided between two adjacent pairs of differential signal terminals, thereby widening the distance between the two pairs of differential signal terminals. The masking effect is good and the anti-interference ability is strong. [Embodiment] Referring to the first to fifth figures, the present electrical connector 100 includes a body portion 1, a plurality of conductive terminals 2 held on the body portion 1, and a metal shielding case 3 covering the body portion 1. The shielding housing 3 is provided with a receiving space 30 for receiving a mating plug (not shown). The body portion 1 includes a base portion 11 and a tongue plate 12 that projects forwardly from the base portion 11. The tongue plate 12 extends in a horizontal direction, and includes an upper surface 121 and a lower surface 122 opposite to the upper surface 121. The lower surface 22 is provided with a plurality of terminal receiving slots 1221 arranged at intervals to support the conductive terminals 2 They are spaced apart to prevent crosstalk from each other. In the present embodiment, the body portion 1 is made of an insulating material, and the body portion 1 and the tongue plate 12 are integrally extended. However, in other embodiments, the tongue panels 12 can be disposed separately from the base 11 and then joined together in an assembled manner. Referring to the third and fifth figures, the conductive terminal 2 includes only two types: a ground terminal and a plurality of pairs of differential signal terminals, and the plurality of pairs of differential signal terminals includes four pairs of differential signal terminals, wherein the four The pair of differential signal terminals includes a first pair of differential signal terminals 21, 201029279, a second pair of differential signal terminals 22, a third pair of differential signal terminals 23, and a fourth pair of differential signal terminals 24. Each pair of differential signal terminals includes a positive signal terminal and a negative signal terminal. Each pair of differential signal terminals 21, 22, 23, 24 is located between two adjacent ground terminals , to attenuate interference between two adjacent pairs of differential signal terminals. The first pair, the second pair and the third pair of differential signal terminals 21, 22, 23 are used for transmitting data in one direction; and the fourth pair of differential signal terminals 24 are mixed signal terminals (Hibrid Channel) for transmitting data in both directions. To achieve faster transfer speed. In addition, the total number of the conductive terminals 2 of the present invention is 13 and the number is small, which can reduce the volume of the electrical connector 100 and the cost of materials, so as to adapt to the development trend of miniaturization of electronic products. In addition, the conductive terminal 2 includes only two types of conductive terminals 2 corresponding to a relatively simple and uncomplicated function, thereby facilitating the design of a circuit board or a wafer to be matched thereto, and facilitating the popularization and utilization of the electrical connector 100. In addition, the only 13 conductive terminals 2 include four pairs of differential signal conducting terminals 21, 22, 23, 24, enabling faster data transmission speeds. Referring to the third figure, each of the conductive terminals 2 is provided with a holding portion 25 fixed to the base portion 11 and a flat plate extending forward from the holding portion 25 and housed in the terminal receiving groove 1221. a contact portion 26, a welded portion 27 bent from the holding portion 25, and a connecting portion 28 connecting the holding portion 25 and the welded portion 27, the contact portion 26 and the welded portion 27 both extending in a horizontal direction. Extends vertically. Referring to the second figure, the contact portions 26 are arranged in a row in the horizontal direction as seen from the mating direction of the electrical connector 100. And the contact portion 26 is located on the same side of the tongue plate 12 (in the present embodiment, the lower side of the tongue plate 2), so that the thickness of the tongue plate 12 is reduced, and the overall thickness of the electrical connector 100 is also reduced. . The contact portion 26 is exposed downwardly in the receiving space 30 to facilitate electrical connection with the mating plug. The soldering portion 27 is soldered to the circuit board in a surface mount manner. In the present embodiment, the conductive terminal 2 is stamped from a metal strip and attached to the body portion 1 in an assembled manner. However, in other embodiments, the tongue plate 12 may be replaced by a printed circuit board (PCB). In this case, a gold finger may be provided on the surface of the printed circuit board instead of the contact portion 26, and one end of the adapter terminal is used. The connection is made to the contact portion 26, and the other end of the adapter terminal is soldered to the printed circuit board, and the purpose of the present invention can also be achieved. The shielding core 3 is formed by punching and bending a piece of metal material. The shielding shell 5 201029279 body 3 includes a front housing 38 and a rear housing 39 that is fastened to the front housing 38. The front housing 38 includes a top wall 31, a bottom wall 32 and two side walls 33. The space 3 is located between the top wall 31 and the bottom wall 32. The two ends of the bottom wall 32 and the side walls 33 are respectively connected by a slope 34. The inclined surface 34 is used to prevent other mismatched plugs from being inserted into the receiving space 3〇. Referring to FIG. 6 , as a further improvement of the first embodiment of the present invention, in the second embodiment of the present invention, the third pair of differential signal terminals 23 and the fourth pair of differential signal terminals 24 are shown. There are two ground terminals G1, G2 between them. The ground terminals G1, G2 are not disposed adjacent to the second and fourth pairs of differential signal terminals 23, 24. In this case, the distance between the third and fourth pairs of differential signal terminals 23, 24 can be increased, and at the same time, the two ground terminals G1, G2 can have a greater relationship between the third and fourth pairs of differential signal terminals 2324. Small dry disturbances. In summary, the creation of this creation has met the requirements of the invention patent, and the patent application was filed according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. It should be covered by the following patent application. [Simple description of the diagram] The first figure is a three-dimensional combination diagram of the original electrical connector. The second figure is a front view of the present electrical connector. The third figure is an exploded perspective view of the present electrical connector. The fourth figure is an exploded perspective view of another angle of the present electrical connector. © Figure 5 is a three-dimensional combination of the conductive terminals of the original electrical connector. Figure 6 is a perspective view of a conductive terminal in another embodiment of the present electrical connector. [Description of main components] Electrical connector 100 Main body 1 Base 11 Tongue 12 Upper surface 121 Lower surface 122 Terminal receiving groove 1221 Conductive terminal 2 First pair of differential signal terminals 21 Pair of differential signal terminals 22 Third pair of differential signals Terminal 23 Fourth pair of differential signal terminals 24 Ground terminal G, G1, G2 Holding portion 25 6 201029279 Contact portion 26 Weld portion 27 Connecting portion 28 Shading housing 3 Housing space 30 Top wall 31 Bottom wall 32 Two side walls 33 Bevel 34 Front case Body 38 rear housing 39 reference 7