TW535250B - Apparatus for mounting of semiconductor chips - Google Patents
Apparatus for mounting of semiconductor chips Download PDFInfo
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- TW535250B TW535250B TW090121294A TW90121294A TW535250B TW 535250 B TW535250 B TW 535250B TW 090121294 A TW090121294 A TW 090121294A TW 90121294 A TW90121294 A TW 90121294A TW 535250 B TW535250 B TW 535250B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/68—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for positioning, orientation or alignment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67259—Position monitoring, e.g. misposition detection or presence detection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
- B65G47/91—Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
- B65G47/917—Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers control arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6838—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping with gripping and holding devices using a vacuum; Bernoulli devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53087—Means to assemble or disassemble with signal, scale, illuminator, or optical viewer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53143—Motor or generator
- Y10T29/53148—Means to assemble commutator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
- Y10T29/53178—Chip component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53174—Means to fasten electrical component to wiring board, base, or substrate
- Y10T29/53183—Multilead component
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Description
535250 五、發明説明(1 ) 本發明係關於一種敘述在申§靑專利範圍第1項序文中 之半導體晶片安置裝置。 對於半導體晶片的安置,係使用一種所謂的晶粒打線 機之自動組合機器,其具有一打線頭,可以抓取放在第 一位置之半導體晶片,然後將其安置在第二位置的基板 上。打線頭具有一抓取工具,其擁有一在傳送時可以持 住半導體晶片之真空吸嘴。用以檢驗半導體晶片是否已 成功抓取之不同的量測系統已發展出來了。對於第一種 量測系統而言,感光器係位在打線頭之中的真空吸嘴上 端。當沒有半導體晶片位在抓取工具之上時,抓取工具 在從第一位置到達基板的途中,會有光源通過,當沒有 半導體晶片位在抓取工具上時,會產生一光引發脈衝。 基於空間因素’因爲具有最低可能質量之打線頭,必須 執行各種不同的功能,所以量測系統不可能有最佳的發 展。 對於另一種已知的量測系統,半導體晶片在運送期間 ’會被引導通過一個光柵器。此種系統的缺點就是光柵 器必須很精確地調整在運送高度。 因爲具有晶粒夾頭抓取工具之半導體晶片的密封常常 很差’所以當半導體晶片已被抓取且吸嘴密封只部分證 實時’應該較強之真空吸嘴的真空強度量測會很適當。 本發明的目的係要發展一種量測系統,其可以可靠地 檢測半導體晶片是否位在抓取工具之上.,及其不須調整 535250 五、發明説明(2 ) 根據本發明所給定之工作係依申請專利範圍第1項之 特徵解決。 工作的解決係用具有自光源發射的光線之量測系統達 成,其中,在沒有半導體晶片時,通過抓取工具之縱向 鑽孔的光線,會依據正交放射的偏光組件,偏射到縱向 鑽孔,然後引導利用於檢測之感光器上。此外,量測系 統最好用反射鏡應對,以將部分橫向出現的光,儘可能 大的偏射在感光器上。 下面,將根據圖式更詳細的說明本發明之實施例。圖 式並未標示尺寸。 第1圖爲具有打線頭之半導體晶片安置裝置,其中打 線頭擁有一抓取工具; 第2圖爲根據本發明,具有量測系統之打線頭的橫截 面圖; 第3圖爲量測系統之第一實施例的平面圖; 第4圖爲抓取工具之細部圖; 第5圖爲量測系統之第二實施例; 弟6圖爲產生平彳了光束之光源。 第1圖圖示’例如,由歐洲專利申請案EP 923 1 1 1號 知道’要瞭解本發明之半導體晶片安置裝置所必須之零 件部分。該裝置包含一可在2個卡式座標方向2、3移 動之所謂的取放系統1,其具有一可以與抓取工具6 — 起在垂直方向4上升和下降之打線頭,用以將半導體晶 片7從第一位置A運送到第二位置B,其中該半導體晶 -4- 535250 五、發明説明(3 ) 片7係放置在基板8之上。 抓取工具6具有縱向鑽孔9,使可以抽真空,以抓住 半導體晶片7。在從位置A到位置B的途中,打線頭5 通過精密配置的光源1 0。當半導體晶片7附著在抓取工 具6之上,通過光源1 〇時,來自光源1 〇的光線不會通 過縱向鑽孔9。若半導體晶片7並沒有出現在抓取工具 6之上,則來自光源1 〇的光線就會通過縱向鑽孔9。 第2圖爲具有抓取工具6和量測系統之打線頭5的橫 截面圖,其中量測系統係用以在沒有出現半導體晶片7 時,檢測通過縱向鑽孔9之來自光源1 0的光線。抓取 工具6可以相對於打線頭5作垂直方向4的移動,且可 在其縱軸作旋轉。抓取工具6包含都不透光之上部1 1 和下部1 2。上部1 1和下部1 2係以能夠穿透光源1 0的 光線之耦合片1 3連接。耦合片1 3係在上部1 1插入縱 向鑽孔9和在下部1 2插入縱向鑽孔9。耦合片1 3之本 體1 5具有一位在縱向鑽孔9之對稱軸1 4的中心之反射 尖頂1 6。尖頂1 6相對於縱向鑽孔9的縱軸1 4係旋轉對 稱。例如,形成尖頂1 6的表面係圓錐形的,且相對於 垂直方向4,係45°角,所以由下進入縱向鑽孔9,來 自光源1 0的光線,會在尖頂1 6偏射進入水平面1 7,然 後橫向自抓取工具6射出。用以量測橫向射出的光線之 感光器1 8,和至少一個用以將射在水平面1 7上的光線 偏射且/或集中在感光器8上之光學組件1 9,都位在打 線頭5之上。基於淸楚說明,光學阻件丨9只圖示,有 535250 五、發明説明(4 ) 關於其詳細的位置和範圍可以由下面的第3圖和第5圖 獲得。例如,感光器1 8可以爲光二極體或光電晶體。 對於第一實施例,光學組件丨9係一具有橢圓形之反 射鏡’因此反射尖頂1 6係位在橢圓形的一焦點20上( 第3圖)’而感光器1 8則是位在橢圓形的另一焦點2 1 上(第3圖)。在此情形下,射在水平面17上的光線 會偏射在感光器18之上,而不管其在水平面17上之方 向。 第3圖圖示橫切過水平面17之橢圓形反射鏡19'、反 射尖頂1 6和感光器1 8。此外,也有圖示橢圓形的兩個 焦點20和2 1,及在尖頂1 6偏射之不同的光束路徑22 .。因爲自橢圓形反射鏡19'反射的光線必須落在感光器 18的前面,所以橢圓形反射鏡IV不用完全封閉。對於 橢圓形反射鏡19’而言,大約有80%橫向射出的光線可 以被集中在感光器18之上。 第4圖圖示第二實施例,其具有兩個可以將偏射在水 平面17的光線引導在感光器18上之光學組件19.1和 19.2。第一光組件19.1係一可以將一部分偏射在尖頂16 的光線聚焦在感光器1 8上之透鏡。透鏡的數値鏡徑要 儘可能的大。對於0.5的數値鏡徑而言,鏡徑角等於 60°,所以大約有17%射在水平面17的光線可以被引導 在感光器18之上。對稱軸14貫穿透鏡的焦點20。感光 器1 8係位在透鏡的焦點2 1之上。第二光組件1 9 · 2係一 具有近柱狀形’同時也具有大約60°的圓周角’可以將 -6- 535250 五、發明説明(5 ) 射在其上之光線反射回去之反射鏡,所以光線也可以,經 由透鏡抵達感光器丨8。反射鏡會反射光線’所以光線會 通過本體1 5的尖頂而到達透鏡◦但因本體1 5的尖頂1 6 會造成遮蔽,所以一定要考慮大約相當於1 0 -4 0 %的損失 。因此對於透鏡而言,例如,可以使用具有抗反射塗層 之雙球面塑膠透鏡。 在第三實施例方面,量測系統只包含第二實施例的第 一光學組件19.1,即透鏡,但不包含第二光學組件19· 2 ,即反射鏡。但是,此只允許小部分偏射在尖頂1 6上 的光線聚焦在感光器1 8之上。 由光源1 0發射且通過縱向鑽孔9的光線具有一定的 光束寬度。因此感光器1 8的光感知區域在垂直方向的 延伸要夠,以儘可能獲取所有來自光源1 〇的光線。但 是,當本體1 5的偏光尖頂1 6和/或反射鏡適應發射自光 源1 0的光束2 3 (第5圖)之特性時,可以減少感光器 18在垂直方向4的延伸。 例如,若使用沒有額外光學組件之商業發光二極體當 作光源時,則自其所發射的光束不會平行行進,而會發 散。 因此,如第5圖所示,本體15之尖頂16的表面最好 要形成曲線狀,使反射在本體1 5上之光束26能聚焦在 垂直方向的感光器1 8之上。對於第一實施例而言,曲 率一方面必須要適應光束2 3的散度’而另一方面也必 須要適應從本體1 5到達感光器1 8之光束路徑22的長
535250 五、發明説明(7 ) 由於尖頂1 6係旋轉對稱,所以M測結果與抓取工鸟6 實際的旋轉位置無關。 本發明的實施例和應用已圖示及說明,明顯地,那些 具有比上述更多的本發明修正例之利益之技術上的技巧 ,很可能沒有脫離此處本發明的槪念。因此,本發明不 會侷制在所附申請專利範圍及其等效範圍的精神之中。 符號說明 1…取放系統 2、3…卡式座標方向 4 ···垂直方向 5…打線頭 6···抓取工具 7…半導體晶片 8 ···基板 9···鑽孔 10…光源 11…鑽孔上部 12···鑽孔下部 13…耦合片 14…對稱軸 15…本體 16…本體尖頂 1 7…水平面 18…感光器 -9- 535250 五、發明説明(8 ) 19…光學組件 1 9 . 1…光學組件 19.2···光學組件 20…焦點 21…焦點 22···光束路徑 23…光束 24…發光二極體 25…透鏡 26···光束 -10
Claims (1)
- 535250 六、申請專利範圍 1. 一種關於安置半導體晶片的裝置,包含具有抓取工具 (6) 之打線頭(5)、光源(1〇)和感光器(18),其中抓取工 具(6)具有可以應用真空,以抓緊及運送半導體晶片(7) 之縱向鑽孔(9),而感光器(18)則是要檢測抓取工具(6) 是否已抓緊半導體晶片(7),因此,在沒有半導體晶片 (7) 時’來自光源(1〇)的光線會通過進入抓取工具(6)的 縱向鑽孔(9),而到達感光器(18),其中具有之特徵爲 :具有反射面形成在其上之本體(15),係配置在抓取 工具(6)的縱向鑽孔(9)之上,其可以將自其下發射的光 線偏射進入抓取工具(6)的縱向鑽孔(9),然後到達水平 面(1 7);抓取工具(6)具有可穿透光源(1 0)的光線之位置 ;及至少一個光學組件(1 9; 19.1,1 9.2)配置在打線頭(5) 之上,至少可以將一部分自抓取工具(6)橫向射出的偏 射光線集中在感光器(18)上。 2. 如申請專利範圍第1項之裝置,其中光學組件(19)係 一橢圓形之反射鏡,因此本體(15)的反射面係位在橢 圓形的第一焦點(20),而感光器(18)則是位在橢圓形的 第二焦點(21)。 3·如申請專利範圍第1項之裝置,其中光學組件(19.1) 係透鏡,而第二光學組件(19.2)係以反射鏡的形式出現 〇 4.如申請專利範圍第1項之裝置,其中光學組件(19.1) 係透鏡,而感光器(18)則是位在透鏡的焦點(21)上。 5·如申請專利範圍第1項之裝置,其中光學組件或組件 -11 - 535250 六、申請專利範圍 (19)和感光器(18)都被安裝在不透光的盒子中。 6. 如申請專利範圍第2項之裝置,其中光學組件或組件 (19)和感光器(18)都被安裝在不透光的盒子中。 7. 如申請專利範圍第3項之裝置,其中光學組件或組件 (19)和感光器(18)都被安裝在不透光的盒子中。 8. 如申請專利範圍第4項之裝置,其中光學組件或組件 (19)和感光器(18)都被安裝在不透光的盒子中。 9. 如申請專利範圍第1項到第8項中任一項之裝置,其 中還有提供一透鏡(25),以產生一幾乎平行之光束(23) ,因此光源(24)要位在透鏡(25)的焦點上。 -12-
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CH17742000 | 2000-09-13 |
Publications (1)
Publication Number | Publication Date |
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TW535250B true TW535250B (en) | 2003-06-01 |
Family
ID=4566218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW090121294A TW535250B (en) | 2000-09-13 | 2001-08-29 | Apparatus for mounting of semiconductor chips |
Country Status (6)
Country | Link |
---|---|
US (1) | US6839958B2 (zh) |
KR (1) | KR100779771B1 (zh) |
CN (1) | CN1206715C (zh) |
HK (1) | HK1044853A1 (zh) |
SG (1) | SG95672A1 (zh) |
TW (1) | TW535250B (zh) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE522925T1 (de) * | 2003-01-16 | 2011-09-15 | Nxp Bv | Chiptransferverfahren und vorrichtung |
CN100448038C (zh) * | 2005-08-09 | 2008-12-31 | 中强光电股份有限公司 | 发光模块与发光二极管封装结构 |
KR20070047676A (ko) * | 2005-11-02 | 2007-05-07 | 가부시끼가이샤 도리온 | 발광 다이오드 실장 기판 |
US8294760B2 (en) * | 2009-04-21 | 2012-10-23 | Samsung Techwin Co., Ltd. | Electronic part recognition apparatus and chip mounter having the same |
JP2012006088A (ja) * | 2010-06-22 | 2012-01-12 | Hitachi High-Technologies Corp | ワーク端部検出機構及びワーク搬送機構 |
KR102350555B1 (ko) * | 2015-06-18 | 2022-01-14 | 세메스 주식회사 | 반도체 패키지 이송 장치 및 방법 |
CN105000380B (zh) * | 2015-07-02 | 2017-10-10 | 邹海英 | Z轴逼近机构 |
CN107838328A (zh) * | 2017-12-15 | 2018-03-27 | 徐文龙 | 一种自动绕线点焊成型机 |
CN110137127B (zh) * | 2019-05-07 | 2021-06-11 | 杨业 | 一种具有调节和定位功能的半导体芯片拾取装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6012799A (ja) | 1983-07-01 | 1985-01-23 | 三洋電機株式会社 | チップ状電子部品の自動装着装置 |
DE3474750D1 (en) | 1983-11-05 | 1988-11-24 | Zevatech Ag | Method and device positioning elements on a work piece |
JPS62144255U (zh) | 1986-02-28 | 1987-09-11 | ||
JPS63277166A (ja) | 1987-05-09 | 1988-11-15 | Hitachi Ltd | チツプ電子部品供給装置 |
US4937511A (en) | 1987-07-21 | 1990-06-26 | Western Technologies Automation, Inc. | Robotic surface mount assembly system |
US4810154A (en) | 1988-02-23 | 1989-03-07 | Molex Incorporated | Component feeder apparatus and method for vision-controlled robotic placement system |
US4819326A (en) | 1988-06-16 | 1989-04-11 | Stannek Karl H | Method for robotic placement of electronic parts on a circuit board |
US4943342A (en) | 1988-08-29 | 1990-07-24 | Golemon Valia S | Component feeding device for circuit board mounting apparatus |
JP2803221B2 (ja) | 1989-09-19 | 1998-09-24 | 松下電器産業株式会社 | Ic実装装置及びその方法 |
US5157734A (en) | 1989-12-19 | 1992-10-20 | Industrial Technology Research Institute | Method and apparatus for picking and placing a surface mounted device with the aid of machine vision |
JPH0824234B2 (ja) * | 1990-01-24 | 1996-03-06 | 松下電器産業株式会社 | 電子部品の吸着装置 |
JPH0797599B2 (ja) * | 1990-04-27 | 1995-10-18 | 株式会社芝浦製作所 | 基板検出装置 |
JPH1068759A (ja) * | 1996-05-31 | 1998-03-10 | Advantest Corp | 吸着物検知装置、該装置を用いた吸着物検知方法、該装置を用いた位置ずれ検知方法、および該装置を用いた清掃方法 |
-
2001
- 2001-08-28 KR KR1020010052029A patent/KR100779771B1/ko not_active IP Right Cessation
- 2001-08-29 TW TW090121294A patent/TW535250B/zh not_active IP Right Cessation
- 2001-09-03 SG SG200105437A patent/SG95672A1/en unknown
- 2001-09-12 CN CNB011328843A patent/CN1206715C/zh not_active Expired - Fee Related
- 2001-09-12 US US09/951,832 patent/US6839958B2/en not_active Expired - Fee Related
-
2002
- 2002-08-29 HK HK02106389.4A patent/HK1044853A1/zh unknown
Also Published As
Publication number | Publication date |
---|---|
US6839958B2 (en) | 2005-01-11 |
SG95672A1 (en) | 2003-04-23 |
KR20020020999A (ko) | 2002-03-18 |
CN1206715C (zh) | 2005-06-15 |
KR100779771B1 (ko) | 2007-11-27 |
HK1044853A1 (zh) | 2002-11-01 |
CN1344015A (zh) | 2002-04-10 |
US20020031423A1 (en) | 2002-03-14 |
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