KR102361988B1 - wafer alignment method of wafer transfer - Google Patents

wafer alignment method of wafer transfer Download PDF

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KR102361988B1
KR102361988B1 KR1020210049789A KR20210049789A KR102361988B1 KR 102361988 B1 KR102361988 B1 KR 102361988B1 KR 1020210049789 A KR1020210049789 A KR 1020210049789A KR 20210049789 A KR20210049789 A KR 20210049789A KR 102361988 B1 KR102361988 B1 KR 102361988B1
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wafer
seating
target
transfer
wafer transfer
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KR20210084355A (en
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박종익
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주식회사 세정로봇
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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
    • 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
    • H01L21/677—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 conveying, e.g. between different workstations
    • H01L21/67739—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 conveying, e.g. between different workstations into and out of processing chamber
    • H01L21/67742—Mechanical parts of transfer devices
    • 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
    • H01L21/677—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 conveying, e.g. between different workstations
    • H01L21/67739—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 conveying, e.g. between different workstations into and out of processing chamber
    • H01L21/67745—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 conveying, e.g. between different workstations into and out of processing chamber characterized by movements or sequence of movements of transfer devices
    • 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
    • H01L21/687—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 using mechanical means, e.g. chucks, clamps or pinches
    • H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
    • H01L21/68728—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a plurality of separate clamping members, e.g. clamping fingers

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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)
  • Robotics (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)

Abstract

본 발명은 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법에 관한 것으로, 보다 상세하게는 웨이퍼를 이송 및 안착시킬 때, 웨이퍼가 안착 위치로부터 벗어나지 않도록 안착시키기 위한 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법에 관한 것이다.
또한, 웨이퍼 트랜스퍼가 웨이퍼를 픽업하여 이송시키는 웨이퍼 이송단계와 픽업된 웨이퍼를 안착 대상에 올리는 웨이퍼 안착단계와 안착 대상에 올려진 웨이퍼의 위치를 확인하는 위치 확인단계와 웨이퍼의 위치를 안착 대상의 중앙으로 정위치시키킨 후 안착 대상에 내려놓는 위치 보정단계를 포함하는 것을 특징으로 한다.The present invention relates to a method for aligning the position of a wafer of a wafer transfer, and more particularly, to a method for aligning the position of a wafer of a wafer transfer for seating the wafer so as not to deviate from a seating position when transferring and seating the wafer.
In addition, the wafer transfer step in which the wafer transfer picks up and transfers the wafer, the wafer seating step of placing the picked up wafer on the seating target, the positioning step of confirming the position of the wafer placed on the seating target, and the position of the wafer at the center of the seating target It is characterized in that it includes a position correction step of placing it on a seating target after placing it in the correct position.

Description

웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법{wafer alignment method of wafer transfer}Wafer alignment method of wafer transfer

본 발명은 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법에 관한 것으로, 보다 상세하게는 웨이퍼를 이송 및 안착시킬 때, 웨이퍼가 안착 위치로부터 벗어나지 않도록 안착시키기 위한 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법에 관한 것이다.The present invention relates to a method for aligning the position of a wafer of a wafer transfer, and more particularly, to a method for aligning the position of a wafer of a wafer transfer for seating the wafer so as not to deviate from a seating position when transferring and seating the wafer.

반도체 등의 전자부품을 생산하기 위한 소재로 사용되는 웨이퍼는, 단결정 실리콘 잉곳을 얇게 절단하는 슬라이싱을 실시한 후 일정한 두께를 가지도록 정밀하게 연마를 실시하게 된다.A wafer used as a material for producing electronic components such as semiconductors is precisely polished to have a constant thickness after slicing to thinly cut a single crystal silicon ingot.

웨이퍼 연마 장치는 상정반과 하정반 사이에 웨이퍼가 안착된 캐리어를 배치한 후 연마용 입자가 혼합된 슬러리를 공급하면서 상정반 또는 하정반을 회전시켜 웨이퍼의 표면을 연마하게되며, 이후 웨이퍼 세척 장치를 통해 연마된 웨이퍼의 이물질을 제거하게 된다.In the wafer polishing apparatus, the wafer surface is polished by placing the carrier on which the wafer is mounted between the upper and lower surface plates and then rotating the upper or lower surface while supplying the slurry mixed with abrasive particles. This removes foreign substances from the polished wafer.

이와 같은 웨이퍼 연마 장치 및 웨이퍼 세척 장치로 웨이퍼를 이송시키는 작업은 한국공개특허 제10-2016-0047907호 "웨이퍼 이송 장치"와 같은 자동화된 웨이퍼 트랜스퍼를 통해 웨이퍼를 이송시키고 안착시키게 된다.The operation of transferring a wafer to such a wafer polishing apparatus and a wafer cleaning apparatus is to transfer and seat the wafer through an automated wafer transfer such as "Wafer Transfer Device" in Korean Patent Application Laid-Open No. 10-2016-0047907.

종래의 웨이퍼 트랜스퍼는 웨이퍼를 이송시킨 후 안착 대상에 내려놓을 때, 안착 위치를 벗어나는 것을 방지하기 위해 카메라를 이용한 비전인식을 통해 웨이퍼를 안착 대상에 정위치시키고 있다.In the conventional wafer transfer, when the wafer is transferred and then placed on the seating target, the wafer is placed on the seating target through vision recognition using a camera to prevent deviation from the seating position.

반면, 웨이퍼 세척 장치와 같이, 세정액이 지속적으로 공급되는 환경에서는 카메라를 이용한 비전인식을 통해 웨이퍼의 위치나, 안착 대상의 위치 검출이 쉽지 않아, 안착 불량이 자주 발생되는 문제점이 있었다.On the other hand, like a wafer cleaning device, in an environment in which a cleaning solution is continuously supplied, it is not easy to detect the position of the wafer or the position of a seating target through vision recognition using a camera.

이에 따라, 보다 간단한 방법으로 안착 대상에 올려진 웨이퍼의 위치를 검출하고, 웨이퍼의 위치를 정위치시키기 위한 기술개발의 필요성이 제기되고 있다.Accordingly, there is a need for technology development for detecting the position of the wafer mounted on the seating target in a simpler way and for positioning the wafer in the correct way.

한국공개특허 제10-2016-0047907호 "웨이퍼 이송 장치"Korean Patent Application Laid-Open No. 10-2016-0047907 "Wafer transfer device"

본 발명의 목적은 상술한 바와 같은 문제점을 해결하기 위해 안출된 것으로서, 카메라를 이용한 비전인식이 어려운 환경에서 보다 간단한 방법으로 웨이퍼의 위치를 검출하고 정위치시키기 위한 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 제공하는 것이다.An object of the present invention is to provide a method for aligning the position of a wafer of a wafer transfer for detecting and positioning the position of a wafer in a simpler way in an environment where vision recognition using a camera is difficult, as devised to solve the above problems will do

본 발명의 다른 목적은 웨이퍼를 보다 간단하게 정위치로 안착시키기 위한 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 제공하는 것이다.Another object of the present invention is to provide a method for aligning a wafer position of a wafer transfer for mounting a wafer in a more simple position.

상기 목적을 달성하기 위해 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법은 웨이퍼 트랜스퍼가 웨이퍼를 픽업하여 이송시키는 웨이퍼 이송단계와 픽업된 웨이퍼를 안착 대상에 올리는 웨이퍼 안착단계와 안착 대상에 올려진 웨이퍼의 위치를 확인하는 위치 확인단계와 웨이퍼의 위치를 안착 대상의 중앙으로 정위치시키킨 후 안착 대상에 내려놓는 위치 보정단계를 포함하는 것을 특징으로 한다.In order to achieve the above object, the wafer position alignment method of the wafer transfer according to the present invention includes a wafer transfer step in which the wafer transfer picks up and transfers a wafer, a wafer seating step of placing the picked-up wafer on a seating target, and a wafer mounted on a seating target. It characterized in that it comprises a positioning step of confirming the position and a position correction step of placing the wafer on the seating target after positioning the wafer at the center of the seating target.

또한, 상기 위치 확인단계는 안착 대상의 가장자리를 따라 일정 간격으로 배치되어 웨이퍼의 측면을 지지하기 위해 상향으로 돌출된 안착 가이드에 웨이퍼가 측면이 지지되지 않고, 안착 가이드 위에 올려진 상태를 검출하도록 구성된 것을 특징으로 한다.In addition, the positioning step is arranged at regular intervals along the edge of the seating target to detect a state in which the side of the wafer is not supported by the seating guide that protrudes upward to support the side of the wafer, and is mounted on the seating guide. characterized in that

또한, 상기 위치 확인단계는 탐침봉이 상부에서 안착 가이드까지 이송하면서 안착 가이드 위에 올려진 웨이퍼를 검출하도록 구성된 것을 특징으로 한다.In addition, the positioning step is characterized in that the probe is configured to detect the wafer mounted on the seating guide while transferring from the upper portion to the seating guide.

또한, 상기 위치 확인단계는 비접촉 방식으로 상부에서 안착 가이드의 상면까지의 거리를 측정하여 안착 가이드 위에 올려진 웨이퍼를 검출하도록 구성된 것을 특징으로 한다.In addition, the positioning step is characterized in that it is configured to detect the wafer mounted on the seating guide by measuring the distance from the top to the upper surface of the seating guide in a non-contact manner.

또한, 상기 위치 보정단계는 웨이퍼가 안착 대상의 중앙에 정위치되도록 웨이퍼를 수평 방향으로 요동시킨 후 내려놓도록 구성된 것을 특징으로 한다.In addition, the position correction step is characterized in that it is configured to put the wafer down after swinging it in a horizontal direction so that the wafer is positioned in the center of the seating target.

또한, 상기 위치 보정단계는 위치 확인단계를 통해 검출된 웨이퍼가 올려진 안착 가이드의 반대 방향으로 웨이퍼를 진동시키면서 내려놓도록 구성된 것을 특징으로 한다.In addition, the position correction step is characterized in that it is configured to put the wafer down while vibrating in the opposite direction of the mounting guide on which the wafer detected through the positioning step is placed.

상술한 바와 같이, 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법에 의하면, 웨이퍼가 안착 대상으로부터 벗어난 위치를 직접 검출하고, 웨이퍼를 이송시켜 정위치시킴으로써, 카메라를 이용한 비전인식이 어려운 환경에도 간단하게 웨이퍼의 위치를 검출하고 정위치시킬 수 있는 효과가 있다.As described above, according to the wafer position alignment method of the wafer transfer according to the present invention, the position of the wafer deviating from the seating target is directly detected, and the wafer is transferred and positioned so that it can be easily recognized even in an environment where vision recognition using a camera is difficult. There is an effect that can detect and position the position of the wafer.

또한, 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법에 의하면, 웨이퍼를 수평 방향으로 요동시킴으로써, 웨이퍼를 간단하게 정위치 시킬 수 있는 효과가 있다.In addition, according to the method for aligning the position of the wafer of the wafer transfer according to the present invention, by swinging the wafer in the horizontal direction, there is an effect that the wafer can be easily positioned.

도 1은 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 순서대로 도시한 순서도.
도 2는 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 통해 웨이퍼가 안착되는 세척 장치를 도시한 도면.
도 3은 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 통해 웨이퍼가 안착된 세척 장치를 도시한 도면.
도 4 또는 도 5는 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법의 실시예를 도시한 도면.1 is a flowchart sequentially showing a method for aligning a wafer position of a wafer transfer according to the present invention.
Figure 2 is a view showing a cleaning apparatus in which the wafer is seated through the wafer position alignment method of the wafer transfer according to the present invention.
3 is a view showing a cleaning apparatus on which a wafer is seated through a wafer position alignment method of a wafer transfer according to the present invention.
4 or 5 is a view showing an embodiment of the wafer position alignment method of the wafer transfer according to the present invention.

본 명세서에 개시되어 있는 본 발명의 개념에 따른 실시 예들에 대해서 특정한 구조적 또는 기능적 설명은 단지 본 발명의 개념에 따른 실시 예들을 설명하기 위한 목적으로 예시된 것으로서, 본 발명의 개념에 따른 실시 예들은 다양한 형태들로 실시될 수 있으며 본 명세서에 설명된 실시 예들에 한정되지 않는다.Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are only exemplified for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention are It may be implemented in various forms and is not limited to the embodiments described herein.

본 발명의 개념에 따른 실시 예들은 다양한 변경들을 가할 수 있고 여러 가지 형태들을 가질 수 있으므로 실시 예들을 도면에 예시하고 본 명세서에서 상세하게 설명하고자 한다. 그러나, 이는 본 발명의 개념에 따른 실시 예들을 특정한 개시 형태들에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물, 또는 대체물을 포함한다.Since the embodiments according to the concept of the present invention may have various changes and may have various forms, the embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 순서대로 도시한 순서도이며, 도 2는 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 통해 웨이퍼가 안착되는 세척 장치를 도시한 도면이고, 도 3은 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법을 통해 웨이퍼가 안착된 세척 장치를 도시한 도면이며, 도 4 또는 도 5는 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법의 실시예를 도시한 도면이다.1 is a flowchart sequentially illustrating a method for aligning the position of a wafer of a wafer transfer according to the present invention, and FIG. 2 is a view showing a cleaning apparatus in which a wafer is seated through the method for aligning the position of a wafer of a wafer transfer according to the present invention; 3 is a view showing a cleaning apparatus in which a wafer is seated through a wafer position alignment method of a wafer transfer according to the present invention, and FIG. 4 or 5 shows an embodiment of a wafer position alignment method of a wafer transfer according to the present invention it is one drawing

도 1에 도시된 바와 같이, 본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법은 웨이퍼 연마 장치 및 웨이퍼 세척 장치로 웨이퍼를 이송시키는 작업을 실시하기 위한 웨이퍼 트랜스퍼가 웨이퍼를 픽업하여 이송한 후 안착 대상에 내려놓을 때, 웨이퍼가 안착 위치를 벗어나는 것을 검출하고, 이를 보정하여 웨이퍼를 안착 대상에 정위치시키기 위한 것이다.As shown in FIG. 1 , in the method for aligning the position of a wafer of a wafer transfer according to the present invention, a wafer transfer for carrying out the operation of transferring a wafer to a wafer polishing apparatus and a wafer cleaning apparatus picks up a wafer and transfers it to a seating target It is for detecting that the wafer is out of a seating position when putting it down, and correcting this to place the wafer on a seating target.

보다 상세하게는, 도 2 또는 도 3에 도시된 바와 같이, 연마가 완료된 웨이퍼(1)가 올려지는 안착 대상(2)이 적어도 하나 이상 배치되어 있고, 안착 대상(2)에 안착된 웨이퍼(1)를 세정하기 위해 세정액을 웨이퍼(1)에 분사하도록 구성된 세척 장치에 웨이퍼(1)를 정위치 시켜 안착시키기 위한 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법이다.More specifically, as shown in FIG. 2 or FIG. 3 , at least one seating target 2 on which the polished wafer 1 is mounted is disposed, and the wafer 1 is seated on the seating target 2 . ) is a wafer position alignment method of wafer transfer for placing and seating the wafer 1 in a cleaning device configured to spray a cleaning solution onto the wafer 1 for cleaning.

본 발명에 따른 웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법은 도 1 내지 도 3에 도시된 바와 같이 웨이퍼 트랜스퍼가 웨이퍼(1)를 픽업하여 이송시키는 웨이퍼 이송단계(S1)와 픽업된 웨이퍼(1)를 안착 대상(2)에 올리는 웨이퍼 안착단계(S2)와 안착 대상(2)에 올려진 웨이퍼(1)의 위치를 확인하는 위치 확인단계(S3)와 웨이퍼(1)의 위치를 안착 대상(2)의 중앙으로 정위치시키킨 후 안착 대상(2)에 내려놓는 위치 보정단계(S4)를 포함하여 구성된다.As shown in FIGS. 1 to 3, the wafer transfer step (S1) in which the wafer transfer picks up and transfers the wafer 1 and the picked-up wafer 1 are mounted on the wafer transfer step (S1) according to the present invention. Wafer seating step (S2) placed on (2) and positioning step (S3) of confirming the position of the wafer (1) placed on the seating target (2) and the position of the wafer (1) in the center of the seating target (2) It is configured to include a position correction step (S4) of placing it on the seating target (2) after placing it in the correct position.

특히, 상기 웨이퍼 안착단계(S2)는 웨이퍼(1)를 안착 대상(2)에 완전히 내려 놓지 않고, 안착 대상(2)에 웨이퍼(1)가 올려진 상태에서 웨이퍼 확인단계(S3)를 실시한 후 바로 웨이퍼(1) 위치를 보정하여 정위치시키는 위치 보정단계(S4)를 실시하여 웨이퍼(1)를 내려놓도록 구성됨이 바람직하나, 상기 웨이퍼 안착단계(S2)가 웨이퍼(1)를 안착 대상(2)에 내려 놓은 다음 위치 보정단계(S4)에서 다시 웨이퍼(1)를 픽업하여 위치를 보정한 후 내려놓도록 구성될 수도 있다.In particular, the wafer seating step (S2) does not completely put the wafer (1) on the seating target (2), but after performing the wafer checking step (S3) in a state where the wafer (1) is placed on the seating target (2) It is preferable to perform a position correction step (S4) of immediately correcting the position of the wafer (1) to place the wafer (1) down, but the wafer seating step (S2) is to place the wafer (1) on the target ( It may be configured to pick up the wafer 1 again in the position correction step (S4) after placing it in 2), correct the position, and then put it down.

또한, 도 4에 도시된 바와 같이 상기 위치 확인단계(S3)는 안착 대상(2)의 가장자리를 따라 일정 간격으로 배치되어 웨이퍼(1)의 측면을 지지하기 위해 상향으로 돌출된 안착 가이드(3)에 웨이퍼(1)가 측면이 지지되지 않고, "A" 위치와 같이 안착 가이드(3) 위에 올려진 상태를 검출하도록 구성된다.In addition, as shown in FIG. 4 , the positioning step (S3) is arranged at regular intervals along the edge of the seating target 2 and protruding upward to support the side of the wafer 1, the seating guide 3 It is configured to detect a state in which the wafer 1 is not supported on the side, and is placed on the seating guide 3 as in the "A" position.

이때, 상기 위치 확인단계(S3)는 탐침봉(4)이 상부에서 안착 가이드(3)까지 이송하면서 안착 가이드(3) 위에 올려진 웨이퍼(1)를 직접적으로 검출하도록 구성되거나, 레이저 또는 초음파와 같은 비접촉 방식으로 상부에서 안착 가이드(3)의 상면까지의 거리를 측정하여 안착 가이드(3) 위에 올려진 웨이퍼(1)를 검출하도록 구성될 수도 있다.At this time, the positioning step (S3) is configured to directly detect the wafer 1 mounted on the seating guide 3 while the probe 4 is transferred from the upper portion to the seating guide 3, or such as a laser or ultrasonic wave. It may be configured to detect the wafer 1 mounted on the seating guide 3 by measuring the distance from the top to the upper surface of the seating guide 3 in a non-contact manner.

또한, 상기 위치 보정단계(S4)는 웨이퍼(1)가 안착 대상(2)의 중앙에 정위치되도록 웨이퍼(1)를 수평 방향으로 요동시킨 후 내려놓도록 구성되며,In addition, the position correction step (S4) is configured to put the wafer 1 down after swinging it in the horizontal direction so that the wafer 1 is positioned at the center of the seating target 2,

또는, 상기 위치 보정단계(S4)는 위치 확인단계(S3)를 통해 검출된 웨이퍼(1)가 올려진 안착 가이드(3)의 반대 방향으로 웨이퍼(1)를 진동시키면서 내려놓도록 구성되어, 웨이퍼(1)가 진동에 의해 반대 방향으로 이송되면서 정위치로 이송되면서 안착되도록 실시될 수도 있다.Alternatively, the position correction step (S4) is configured to put the wafer 1 down while vibrating the wafer 1 in the opposite direction to the mounting guide 3 on which the wafer 1 detected through the positioning step S3 is mounted, (1) may be carried out so as to be seated while being transferred to the correct position while being transferred in the opposite direction by vibration.

다른 실시예로써, 도 6에 도시된 바와 같이 상기 안착 대상(2)으로부터 웨이퍼(1)를 상,하 이송시키기 위해 안착 대상(2)의 가장자리를 따라 배치된 복수 개의 지그 가이드(5)가 상승된 상태에서 웨이퍼 안착단계(S2)가 안착 대상(2) 대신 상승된 지그 가이드(5)에 거치되도록 웨이퍼를 지그 가이드(5)의 상부에 올려놓도록 구성될 수 있다.As another embodiment, as shown in FIG. 6 , a plurality of jig guides 5 disposed along the edge of the seating target 2 to move the wafer 1 up and down from the seating target 2 rises. It may be configured to put the wafer on top of the jig guide 5 so that the wafer seating step S2 is mounted on the raised jig guide 5 instead of the seating target 2 in the state where the wafer is mounted.

이후, 상기 위치 확인단계(S3)는 지그 가이드(5)에 올려진 웨이퍼(1)의 위치가 정중앙에 위치하는지 확인하게 되며, 보정단계(S4)가 웨이퍼(1)의 위치를 지그 가이드(5)의 중앙으로 정위치시킨 후 지그 가이드(5)에 내려놓으며, 지그 가이드(5)에 웨이퍼(1)가 올려지면 지그 가이드(5)가 하강하여 안착 대상(2)에 웨이퍼(1)를 내려놓도록 구성될 수 있다.Thereafter, the positioning step (S3) is to check whether the position of the wafer (1) mounted on the jig guide (5) is located at the exact center, and the correction step (S4) is to determine the position of the wafer (1) by the jig guide (5) ), put it down on the jig guide 5, and when the wafer 1 is placed on the jig guide 5, the jig guide 5 descends and lowers the wafer 1 on the seating target 2 It can be configured to put


이때, 상기 위치 보정단계의 지그 가이드는 웨이퍼를 중앙으로 정위치시킬 수 있도록 원뿔 형태의 제1 정렬부(5a)와 상기 제1 정렬부(5a)의 하부로 연장되는 원기둥 형태의 제2 정렬부(5b)와 상기 제2 정렬부(5b)의 하부로 연장되는 원뿔대 형태의 제3 정렬부(5c)로 구성된다.
In this case, the jig guide of the position correction step includes a first aligning part 5a in a conical shape and a second aligning part in a cylindrical shape extending below the first aligning part 5a to properly position the wafer in the center. (5b) and a third alignment part 5c in the form of a truncated cone extending downward of the second alignment part 5b.

이상과 같이 본 발명은 첨부된 도면을 참조하여 바람직한 실시예를 중심으로 기술되었지만 당업자라면 이러한 기재로부터 본 발명의 범주를 벗어남이 없이 많은 다양한 자명한 변형이 가능하다는 것은 명백하다. 따라서 본 발명의 범주는 이러한 많은 변형의 예들을 포함하도록 기술된 청구범위에 의해서 해석되어져야 한다.As described above, the present invention has been described based on preferred embodiments with reference to the accompanying drawings, but it is apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the present invention from these descriptions. Accordingly, the scope of the present invention should be construed by the appended claims including examples of many such modifications.

1 : 웨이퍼
2 : 안착 대상
3 : 안착 가이드
4 : 검출부재
5 : 지그 가이드
10 : 세정 장치1: Wafer
2: Settling target
3: Seating guide
4: detection member
5: Jig guide
10: cleaning device

Claims (6)

웨이퍼 트랜스퍼가 웨이퍼를 픽업하여 이송시키는 웨이퍼 이송단계와;
픽업된 웨이퍼를 안착 대상의 가장자리를 따라 배치되어 상승된 상태의 복수 개의 지그 가이드에 거치시키는 웨이퍼 안착단계와;
웨이퍼의 위치를 지그 가이드의 중앙으로 정위치시키킨 후 지그 가이드를 하강시켜 안착 대상에 웨이퍼를 내려놓는 위치 보정단계를 포함하며,
상기 위치 보정단계의 지그 가이드는 웨이퍼를 중앙으로 정위치시킬 수 있도록
원뿔 형태의 제1 정렬부와;
상기 제1 정렬부의 하부로 연장되는 원기둥 형태의 제2 정렬부와;
상기 제2 정렬부의 하부로 연장되는 원뿔대 형태의 제3 정렬부로 구성된 것을 특징으로 하는
웨이퍼 트랜스퍼의 웨이퍼 위치 정렬방법.
a wafer transfer step in which the wafer transfer picks up and transfers the wafer;
A wafer seating step of placing the picked-up wafer on a plurality of jig guides arranged along the edge of the seating target and in a raised state;
Positioning the wafer to the center of the jig guide and then lowering the jig guide to place the wafer on a seating target.
The jig guide of the position correction step allows the wafer to be positioned in the center.
a first alignment part in the form of a cone;
a second alignment part having a cylindrical shape extending downward of the first alignment part;
characterized in that it is composed of a third alignment part in the form of a truncated cone extending downward of the second alignment part
Wafer position alignment method of wafer transfer.
 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
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