TWI377743B - Electrical connector with esd protection - Google Patents

Electrical connector with esd protection Download PDF

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Publication number
TWI377743B
TWI377743B TW094123866A TW94123866A TWI377743B TW I377743 B TWI377743 B TW I377743B TW 094123866 A TW094123866 A TW 094123866A TW 94123866 A TW94123866 A TW 94123866A TW I377743 B TWI377743 B TW I377743B
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Taiwan
Prior art keywords
connector
ground
sheet
contact pad
electrical
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TW094123866A
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English (en)
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TW200614603A (en
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John Joseph Consoli
Brent Ryan Rothermel
Graham Harry Smith
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Tyco Electronics Corp
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/6485Electrostatic discharge protection
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581Shield structure
    • H01R13/6585Shielding material individually surrounding or interposed between mutually spaced contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70Coupling devices
    • H01R12/71Coupling devices for rigid printing circuits or like structures
    • H01R12/72Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Elimination Of Static Electricity (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Description

1377743 九、發明說明: 【發明所屬之技術領域】 本發明關於一種具有靜電放電(ESD)防護之電氣連 接器。 ' 【先前技術】 某些電氣連接器具有一匹配端,其中暴露傳導端子 以供嵌合匹配連接器之端子。此常見於用於互連電路板 之直角角度連接器’例如背平面與子板。該背平面一般 ,有連接器-般稱為總連接器,匹配子板連接器一般稱 暴露該插座中該端子之部分以供嵌合該總 當匹配該連接器時,於該連接器介面之相對電荷可 ϋ該兩連接關之靜電放電。事實上,靜電放電可 人接近或接觸該連接器介面或接觸該端子接點 般而言’極少電流結合於靜電放電;然而, ^可旎很南而足以損害或毀壞特定型 半導體裝置。因此,當該連接器接點或㈡ 上之此裝置時’該靜電放電可能損害或毀 裘°哀電路板上之電氣裝置。 供防為^咸輕該靜電放電問題,某些電氣連接器包含提 ^有盤in特性。於至少某些連接器中,咖防護提 連ίίϊίΓ形式之防護置於接近該連接器介面,且 連接至_脑上或接近該連接H之地。“ =護之供應增加該連接器之成本。供應必須 == 連r殼體中做成,且咖通道必= 複雜度 這些結構亦增加該連㈣之成本與 5 數個:η些直角角度插座連接器,,該插座包含複 接點藝與接帶軌跡與接地轨跡以及信號 珂表面,且士技,该接點墊與軌跡限制至一 之目的。地平面配置於該後表面·^,以達防護 實質部分;^。’違接地平面覆盖該薄片之後表面之 1不延伸υ於信號完整性的理甴’該接地平面 器,各薄片义二點墊後之區域。欲有效防護該連接 士磚月必須遮蔽ESDe 饮 不需姆*分、±、有成本效益之方式提供ESD防護且 【發明V容x】接器之大小或複雜度之電氣連接器。 片之人二士月係種電氣連接器,包含固持複數個電氣薄 ==體:每-電氣薄片具有第-側、相對it 向前匹緣配邊緣、及複數個接點塾於凹入該 靠近該向前匹配中之—側上’且比該接點墊更 【實施方式】 , 圖例示根據本發明之範例實施例形成之電氣 之立體圖。該連接111G係配置以安裝於範例 例中係子板之電路板12上之插座連制。該連接 =0具有匹配面14與包含用以安裝該連接器10至該 ^路板=之介面之安裝面16。於範例實施例中,該安 ,16只質垂直5亥匹配面I#,使得該插座連接器1〇互 連實質互相於直角角度之電氣組件。該連接器1〇之匹 j面14之義为平面連接器電路板。在實施例中,連接 10可用於互連子板至背平面電路板。於其他實施例 1377743 中’該連接器 電氣組件。 10可配置以 &連並非互相為直肖角度之 雖然本發明將就攜帶差別信號之連接 以描述,應了解下列說明僅為示範 σ方面加 之發明概念之可能應用。應了解本發明之利=在此 相等產生至其他㈣之㈣連接器與薄片&^、優點可 八,接器10包含具有上殼體部22與下。殼體部24 之;丨電殼體20。該上殼體22包含分別接近該連接哭 之匹配面14之上遮蔽物26與下遮蔽物28 ◎上遮&
26與下遮蔽物28以亦為該連接器10之匹配方向之箭頭 Α之方向自上殼體22向前延伸。該殼體22包含端^口 3〇位在第一端32與第二端34。該上殼體22與下&體 24耦合在一起形成開口架構,用以保持接收至具有卡緣 連接之殼體20中之複數個薄片40。該上遮蔽物'26盥下 遮蔽物28分別包含放置與對齊該薄片4〇之複數^槽 36 ’以容易與匹配連接器(未顯示於第一圖中)匹配。曰
該薄片40包含信號接點墊44與接地接點整46。該 接地接點墊46具有大於該信號接點墊44之對應長度= 以箭頭A之方向測量之長度。於實施例中,該連接器1〇 係攜帶差別信號之高速連接器,且該信號接點整與 接地接點墊46以交替方式配置,其中成對之信號接^ 墊44由接地接點墊46分離。例如,該薄片4〇Α開始於 接地接點墊46相鄰該上遮蔽物26,且結束於一對^號 接點墊44相鄰該上遮蔽物28,反之該相鄰薄片4〇Β°^ 始於一對信號接點墊44相鄰該上遮蔽物26,且結束於 接地接點墊46相鄰該上遮蔽物28。由於其較短^度,、 該薄片40Β上之信號接點塾44於第—圖中被片 7 40A遮住;鈇 點墊46而顯1 ’該方式之交替本質藉由效置該接地接 與接地接點C接器10中之各薄片之信號接點墊 t,且於第Γ樣式不同。該連接器1〇模組化於架構 有總共48 之實施例中包含十二個薄片4〇具 中,可#用^轉之差別信號。應了解於其他實施例 自該fit夕或較少數量之薄片4〇。該薄片40突出 之;Ρ堂敝-6與28,且可能易受到來自靜電放電(ESD) 描徂:c κ接地接點墊46之目的係為該信號接點墊44 焚"1,、liSD防護。 f =圖係例示薄片第一側50之範例薄片40之前視 Θ 。玄薄片40包含具有向前匹配邊緣或背平面邊緣54 =匹配端52。該匹配端52配置以匹配可為背平面連接 窃(未顯示於第二圖中)之匹配連接器。該薄片4〇亦包含 有於與忒電路板12(第一圖)之介面處接枚於該下殼體 24(第圖)中之文裝邊緣或子板邊緣56。該安裝邊緣56 實質垂直該匹配邊緣5心該薄片4〇於該匹配端52處具 有凹槽角落58,以促進與該匹配連接器之匹配過程。 ▲ 一於範例實施例中,該薄片40係印刷電路板薄片。 片40分別包含一些信號接點墊44與接地接點墊邨 化著该匹配邊緣54配置及一些信號接點墊6〇與接地接 塾* 62 /σ著該女裝邊緣56配置。由於其較短長度,讀 化號接點墊44相對該接地接點墊46自該薄片匹配邊緣 =向後凹入。傳導仏號執跡66分別互連該匹配邊緣與 ,裝邊緣54與56上之信號接點墊44與6〇。接地接點 =跡68互連於該薄片40之匹配邊緣54處之接地接點 墊46與於該安裝邊緣56處之接地接點墊62 ;然而,埃 地接點塾46與62之間不需嚴格―對—關係,如下方將 1377743 解釋般。該薄片40僅於該第一側5〇上具 46、60、62與信號轨跡的。 1占堅44 第三圖例示自指尖7〇觸碰至該薄片匹 工央電放電(ESD)之薄片4〇之部分前視 圖。备ESD發生時,該電荷尋找最 若有足夠電壓或電位存在,银Dd傳導物件。 導物杜。於當-同士跳躍空氣間隙至傳 44 Lt指尖7〇觸碰與該信號接點塾 C、矣塾46之間之匹配邊緣54。箭頭 及F代表可能放電路徑。箭 箭頭D或E,使得若發生放電,該f d白短於 墊46而非信號接點墊44。 _走到接地接點
接點墊46有效防護盥p方護;月况中,該接地 之損壞。 m仏戒接點塾44以免受ESD 第四圖例示自指尖70接收 40A與40B(見第一圖)之部分 相蝻薄片,例如 該信號接點墊44 一致之^片4Λ視圖。該指尖70接觸與 頭。-、及!代表。該 較長接地接點46代表最短放=相—片上之 將會被採用之路徑。再一次,二路位,且若發生放電時 護與防護該信號接點塾44以/Λ接地接點墊46有效防 第五圖例示於該薄片4〇,ESD之損壞。 收ESD之薄片4〇之部分前視^槽 處自指尖接
可能放電隸由導向信號接點 、況中’ ESD 向接地接點墊46之箭頭l代參 前頭J與K及導 地接點塾46之放電路彳l長私:此晴开> 中,至該接 電路經J與Κ,使得“接點墊44之放 第六圖係例示該薄片40 咖之損壞。 第一側8〇之薄片4〇之 9 Ξ⑺亥二專片40之第二側80包含接地平面82。該接 質覆蓋該薄片40之第二側80;然而,基於 由’雜料面82不超出至該第一側 ·‘· 44、46後方區域84之線ΒΒ。延伸該接 複域%中於高速信號效能上具有反效果。 複數個通逼86延伸通過薄片40連接至該薄片4〇之第 之接地執跡與接地平面82。該接地平面82提供 共同接點,使得該薄月4〇夕笛 紐無須個別接地接點62。之弟—側5〇上之各接地執跡 為了點出第五圖中所示之弱點’該薄片4 =導接:跡90之形式防護之額外⑽,約該匹配 螭54之周圍且放置於該薄片4〇 地執跡90橫跨唁簿片筮_彳目彳弟—側80上。该接 片第一相㈤Γ 4 〇之周圍’並分別於該薄 之信號與接地接點墊44與46之向後線 處、該接地平面該接地執跡9〇 緣54與該薄片第一伽5〇 置於3匹配遺 46之間,為發生接近薄5#一、接地接點墊44與 Μ短放之匹配端52之励提 了範例實施例中,該ESD防護亦包含 、 之第一側80上且於該薄片第一側50上 該接地接點塾46後方之次接地執跡92。帛側5上 第一 Zo該上咖防護之軌跡9〇與92 —體成形於該薄片 第一側上。該執跡9〇與92較靠近該 =且=遮住^防護該信號接點:。於第 ill 46 〇 =====地接點塾46。該次接 -側50上^ 且於該薄片40之第 μ接點墊4 4與4 6後面之線B B處結合該接地 ί面地_ 92㈣祕無墊46之 90提供額外流動路徑區域镜效能,而仍為該接地執跡 9〇二2連;^可形成該薄片4〇,使得該軌跡 面接地接點塾而非該接地平 轨跡90與92可連接之可提供有接地接點墊至該 地。於範例實施例中,=接地電路,例如專用ESD接 第二侧80上、。或者若1 軌跡90與92於該薄片40之 該薄片40之第一側5〇,求許可,該轨跡90可放置於 無電源供騎匹配,暫^ 若該連接11 10僅於 點將無關緊要,且二,地該匹配連接器中之信號接 之第一側50上。以D防護執跡90可置於該薄片40 第-’有嘱料魏料過絲體2〇之 轨跡66二咖。該開口 30暴露該信號 或轉換該已暴露薄片40A至有效犧 = ¾ Ιϋ、之功能將該薄片4〇A變為防護薄片之接地 ,^ ^以避免。由於不利地影響該連接器10之成 別吸帶容Γ或兩者皆是’這些選項無一特 考虞。…、'而,兩者皆可實行,且可於關鍵應用中被 第广圖係適用於該連接器10之總連接器刚之立 圖。該總連接器100係適用於背平面電路板或背平面 =件(未顯不)上之已知連接器。該總連接器100包含殼 租102二固持有複數個接點1〇4,其中某些係信號接點 而某-係接地接點,以該插座連接器10上之接點墊44、
互補方式配置。該總連接器100包含匹配面10ό。 ΐί體1〇2包含複數個槽108,配置以魏該插座連接 逯技。。中之薄片40之匹配邊緣54。一般而言,安裝該總 五。。使知其比该插座連接器1 〇較不可存取,使得 =人較不可能觸碰該總連接器100。常態地,當該連接 森100、10結合時,該插座連接器1〇帶至該總連接器 100。結果,導致靜電放電之損壞相對於該總連接器 相當不重要。
述之實施例提供具有一體成形於該哭 周圊值暮勒秘蔓連接益。透過增加電氣接地之 11圍專導軌跡提供該ESD p方護。該防i方法利 器薄片係電糾玄連接 刻時設計至該薄月佑片…貝㈣趼m路板蝕 知ESD防護技形成°因此’相較於已 ΑI $ Μ支何,5亥溥片上之一體成形ESD防護降低 成本與複雜性以提供ESD防護。 万隻降低 12 1377743 【圖式簡單說明】 第一圖係根據本發明之範例實施例形成之插座連 接器之立體圖。 第二圖係根據本發明之範例實施例形成之薄片之 前視圖。 第三圖係接收指尖靜電放電(ESD)之薄片之部分前 視圖。 第四圖係接收指尖ESD之相鄰薄片之部分端視圖。 第五圖係於該薄片之凹槽角落處接收指尖ESD之 薄片之部分前視圖。 第六圖係第二圖所示之薄片之後視圖。 第七圖係根據本發明之範例實施例形成之總連接 器之立體圖。 【主要元件符號說明】 10 電氣連接器 20 介電殼體 40 薄片 44 信號接點墊 46 接地接點墊 50 薄片第一側 54 向前匹配邊緣或背平面邊緣 80 第二侧 82 接地平面 90 傳導接地執跡 92 次接地執跡 13

Claims (1)

101年5月9曰 Μ年D],日修(更)正替換頁 申請專利範圍: 一種電氣連接器(10),包含:介電殼體(20),固持複數 個電氣薄片(40),每一電氣薄片具有第一側(5〇)、相對 該第一側之第二側(8〇)、向前匹配邊緣(54)、及複數個 接點墊(44、46)位於凹入該向前匹配邊緣之第一侧 上,其特徵在於: 電氣接地之周圍傳導軌跡(9〇)係配置於該第二側 上且比該接點墊更靠近該向前匹配邊緣; 其中該複數個接點墊具有信號接點墊(44)與接地 接f墊(46),次接地轨跡(92)配置於該第二側上/且對齊 一侧上之接地接點墊,該次接地執跡自該周圍傳 導執跡延伸至接地平面(82)。 如,,專利範圍第1項所述之電氣連接器,其中每一 電氣薄片具有該接地平面(82)位於該第二側上,且該 周圍傳導軌跡連接至該接地平面。
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