[go: up one dir, main page]

KR100806589B1 - Transparent substrate sensing device and method - Google Patents

Transparent substrate sensing device and method Download PDF

Info

Publication number
KR100806589B1
KR100806589B1 KR1020010087681A KR20010087681A KR100806589B1 KR 100806589 B1 KR100806589 B1 KR 100806589B1 KR 1020010087681 A KR1020010087681 A KR 1020010087681A KR 20010087681 A KR20010087681 A KR 20010087681A KR 100806589 B1 KR100806589 B1 KR 100806589B1
Authority
KR
South Korea
Prior art keywords
light
substrate
transparent substrate
light emitting
amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
KR1020010087681A
Other languages
Korean (ko)
Other versions
KR20030057608A (en
Inventor
서풍부
Original Assignee
엘지.필립스 엘시디 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지.필립스 엘시디 주식회사 filed Critical 엘지.필립스 엘시디 주식회사
Priority to KR1020010087681A priority Critical patent/KR100806589B1/en
Publication of KR20030057608A publication Critical patent/KR20030057608A/en
Application granted granted Critical
Publication of KR100806589B1 publication Critical patent/KR100806589B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00Photometry, e.g. photographic exposure meter
    • G01J1/42Photometry, e.g. photographic exposure meter using electric radiation detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/58Arrangements comprising a monitoring photodetector

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)

Abstract

본 발명은 투명기판의 감지장치 및 방법에 관한 것으로, 발광부와 수광부가 일측에 위치하고, 타측에는 흡수판을 구비한 감지장치를 제공하고, 일측과 타측 사이에 투명기판이 위치하게 하여 감지하도록 한다.The present invention relates to a sensing device and a method for a transparent substrate, and provides a sensing device having a light emitting part and a light receiving part on one side, and an absorbing plate on the other side, so that the transparent substrate is located between one side and the other side. .

투명기판이 없는 경우, 발광부에서 나온 빛이 흡수판에 거의 흡수되어 수광부에는 빛이 감지되지 않도록 하고, 투명기판이 있는 경우에는 발광부에서 나온 빛이 투명기판에 (난)반사되어 수광부에서 광량이 일정치 이상 되어 감지하게 된다.In the absence of a transparent substrate, the light emitted from the light emitting unit is almost absorbed by the absorber plate so that the light is not sensed by the light receiving unit. This is over a certain value and will be detected.

이런 설정방법을 사용하면, 기판이 있는 경우와 없는 경우와의 광량의 기준점이 크게 차이가 나게 되므로 감지오류가 거의 발생되지 않는 효과가 있다.
Using this setting method, the reference point of the amount of light between the presence and absence of the substrate is greatly different, so that there is almost no detection error.

Description

투명기판 감지장치 및 방법{Apparatus and method for sensing a transparent substrate} Apparatus and method for sensing a transparent substrate}             

도 1은 종래의 투명기판 감지장치에서 기판이 없는 경우를 나타낸 개략도       1 is a schematic view showing a case where no substrate in the conventional transparent substrate sensing device

도 2는 종래의 투명기판 감지장치에서 기판이 있는 경우를 나타낸 개략도       Figure 2 is a schematic diagram showing a case where the substrate in the conventional transparent substrate sensing device

도 3a 내지 도 3c는 각각 종래의 장치에서 나타나는 광량의 변화를 나타낸 것으로 도 3a는 정상적으로 기판이 없는 경우, 도 3b는 정상적으로 기판이 있는 경우, 도 3c는 비정상적인 환경으로 인하여 기판이 없음에도 있는 것으로 판정하는 경우를 나타낸다.3A to 3C show changes in the amount of light shown in the conventional apparatus, respectively. FIG. 3A shows that there is no substrate normally, FIG. 3B shows that the substrate normally exists, and FIG. 3C determines that there is no substrate due to an abnormal environment. The case is shown.

도 4는 본 발명에 따른 투명기판 감지장치에서 기판이 없는 경우를 나타낸 개략도Figure 4 is a schematic diagram showing a case where no substrate in the transparent substrate detecting apparatus according to the present invention

도 5는 본 발명에 따른 투명기판 감지장치에서 기판이 있는 경우를 나타낸 개략도Figure 5 is a schematic diagram showing a case where the substrate in the transparent substrate detecting apparatus according to the present invention

도 6a와 도 6b는 각각 도 4와 도 5에 따른 광량의 변화를 나타낸 그래프6A and 6B are graphs showing changes in the amount of light according to FIGS. 4 and 5, respectively.

(도면의 부호에 대한 간단한 설명)(Short description of the signs in the drawings)

10: 발광부 20: 수광부10: light emitting unit 20: light receiving unit

130: 흡수판 40: 투명기판130: absorber plate 40: transparent substrate

본 발명은 기판의 존재유무를 파악하여 후속공정을 진행하기 위한 장치에 관한 것으로, 특히 유리와 같은 투명기판의 존재유무를 감지하는 장치 및 방법에 관한 것이다.The present invention relates to a device for carrying out a subsequent process by determining the presence of a substrate, and more particularly, to a device and a method for detecting the presence of a transparent substrate such as glass.

최근에 반도체와 디스플레이장치산업에 있어서, 유리기판 또는 석영기판과 같이 투명한 기판이 공정에 많이 사용되고 있다. 이러한 투명한 기판은 보통 로봇이나 반송장치에 의해 수행되는 공정장비쪽으로 이동된다. 그런데 이러한 투명기판의 존재유무에 따라 후속공정진행이 결정되므로, 기판이 제 위치에 안착되었는지를 파악하는 감지장치는 필수적이다.Recently, in the semiconductor and display device industries, transparent substrates such as glass substrates or quartz substrates have been used in many processes. These transparent substrates are usually moved towards process equipment performed by robots or conveying devices. However, since the subsequent process is determined according to the presence or absence of such a transparent substrate, a sensing device for determining whether the substrate is seated in place is essential.

예를 들어, 액정표시장치(liquid crystal display)에서 건식식각(dry etching)을 위해 이송챔버(transfer chamber)로 기판이 이송된 후 기판을 에칭하게 되는 바, 이 경우 이송챔버내에 기판이 정위치에 도달했는지를 감지하는 센서가 필요하게 된다.For example, the substrate is etched after the substrate is transferred to a transfer chamber for dry etching in a liquid crystal display. In this case, the substrate is positioned in the transfer chamber. You will need a sensor to detect if it has arrived.

이러한 센서 즉, 감지장치는 도 1에 그 원리가 도시되어 있는 바, 발광부(10)와 수광부(20)를 갖춘 센서(100)와 저면의 반사판(30)으로 구성된다. 센서(100)와 반사판(30)사이에 투명기판이 위치하게 된다. 투명기판이 제 위치에 없는 경우에는 센서의 발광부(10)에서 나온 빛이 반사판(30)에 반사되어 거의 모든 빛이 그대로 수광부(20)로 들어간다. 이때 발광부(10)에서 나온 광량의 일정한도 이상이 수광부(20)로 들어오면 정상적으로 기판이 없는 것으로 감지되는 것이다. The sensor, i.e., the sensing device, is illustrated in FIG. The transparent substrate is positioned between the sensor 100 and the reflecting plate 30. When the transparent substrate is not in place, the light emitted from the light emitting unit 10 of the sensor is reflected by the reflecting plate 30 so that almost all the light enters the light receiving unit 20 as it is. At this time, when a certain degree or more of the light amount emitted from the light emitting unit 10 enters the light receiving unit 20, it is detected that there is no substrate normally.

한편, 투명기판이 있는 경우에는 도 2에 도시된 바와 같이, 센서 발광부(10)에서 나온 빛이 기판(40)을 통과하면서 난 반사가 일어나 수광부(20)로 들어가는 광량은 떨어지면서 설정치 이하로 감지되어 기판(40)이 있는 것을 정상적으로 감지한다.On the other hand, if there is a transparent substrate, as shown in Figure 2, the light emitted from the sensor light emitting unit 10 passes through the substrate 40, the reflection occurs and the amount of light entering the light receiving unit 20 falls below the set value. It is detected that the substrate 40 is normally detected.

그런데, 수광부(20)에서 감지되는 광량이 일정치 이하로 감지되어 기판(40)이 없음에도 기판(40)이 있는 것으로 감지되는 경우가 발생된다. 이는 이송챔버(transfer chamber)의 분위기나, 발광부(10)로 들어오는 광의 경로인 광케이블(15)에서 광손실이 일어나는 경우와, 기판(40)이 없음에도 불구하고 수광부(20)에서 인식되는 광량이 설정치 이하로 떨어지게 되어 기판이 있는 것으로 인식하게 되는 문제점이 있다.However, when the amount of light detected by the light receiving unit 20 is sensed below a predetermined value, the case where the substrate 40 is detected even though there is no substrate 40 occurs. This is because the light loss occurs in the atmosphere of the transfer chamber or in the optical cable 15, which is the path of the light entering the light emitting unit 10, and the amount of light recognized by the light receiving unit 20 despite the absence of the substrate 40. There is a problem in that it falls below this set value and recognizes that there is a substrate.

이를 그래프를 이용해서 도 3a 내지 도 3c에 나타내고 있는 바, 도 3a의 "a"만큼의 광량이 들어와서 설정치 "s" 보다 높으면, 기판이 없는 것으로 감지되고, 도 3b의 경우 수광부의 광량이 설정치 "s" 보다 낮으면 기판이 있는 것을 정상적으로 감지하지만, 발광부에서 나온 광량이 일정치 보다 작거나 주위 환경으로 수광량이 떨어지는 경우, 기판이 없는 경우에도 불구하고, 도 3c와 같이 기판이 있는 것으로 감지되는 것이다.3A to 3C by using the graph, when the amount of light as much as "a" of FIG. 3A comes in and is higher than the set value "s", it is detected that there is no substrate, and in the case of FIG. If it is lower than "s", it is normally detected that there is a substrate, but if the amount of light emitted from the light emitting unit is smaller than a predetermined value or the amount of received light is dropped into the surrounding environment, even though there is no substrate, the substrate is detected as shown in FIG. 3C. Will be.

본 발명은 상기와 같은 종래기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 투명기판의 존재유무를 정확히 판정할 수 있는 개선된 감지 장치를 제공하는 것이다.      The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide an improved sensing device that can accurately determine the presence or absence of a transparent substrate.

본 발명의 기타 장점이나 목적은 추후 설명하는 실시예를 통해 이해할 수 있을 것이다.
Other advantages or objects of the present invention will be understood through the embodiments described later.

본 발명은 상기 목적을 달성하기 위하여, 발광부와 수광부가 일측에 위치하고, 타측에는 흡수판을 구비한 감지장치를 제공하고, 일측과 타측 사이에 투명기판이 위치하게 하여 감지하도록 한다.In order to achieve the above object, the present invention provides a sensing device having a light emitting part and a light receiving part at one side, and an absorbing plate at the other side, and having a transparent substrate positioned between the one side and the other side.

즉, 투명기판이 없는 경우, 발광부에서 나온 빛이 흡수판에 거의 흡수되어 수광부에는 빛이 감지되지 않도록 하고, 투명기판이 있는 경우에는 발광부에서 나온 빛이 투명기판에 (난)반사되어 수광부에서 광량이 일정치 이상 되어 감지하게 된다.That is, when there is no transparent substrate, the light emitted from the light emitting part is almost absorbed by the absorber plate so that the light is not sensed by the light receiving part. When there is a transparent substrate, the light emitted from the light emitting part is (reflected) on the transparent substrate, The amount of light in the sensor detects a certain value.

이런 설정방법을 사용하면, 기판이 있는 경우와 없는 경우와의 광량의 기준점이 크게 차이가 나게 되므로 감지오류가 거의 발생되지 않는 효과가 있다.
Using this setting method, the reference point of the amount of light between the presence and absence of the substrate is greatly different, so that there is almost no detection error.

이하, 본 발명에 따른 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다. 종래와 동일, 유사한 부분에 대하여는 동일, 유사한 참조부호를 부여하였다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same and similar reference numerals are given to the same and similar parts as before.

도 4는 본 발명에 따른 감지장치를 개략 도시하고 있으며, 도시한 바와 같이, 광케이블(15)과 연결된 발광부(10)와 상기 발광부(10)에서 발광된 빛이 반사되는 위치에 자리한 수광부(20)와, 상기 발광부(10)의 빛이 입사되는 흡수판(130)으로 이루어져 있다. 이 흡수판(130)의 모양은 본 발명의 핵심이 아님은 물론이다.FIG. 4 schematically illustrates a sensing device according to the present invention. As shown in FIG. 4, the light emitting unit 10 connected to the optical cable 15 and the light receiving unit positioned at the position where the light emitted from the light emitting unit 10 is reflected ( 20 and an absorbing plate 130 through which the light of the light emitting part 10 is incident. Of course, the shape of the absorber plate 130 is not the core of the present invention.

먼저 기판이 없는 경우에, 발광부(10)의 빛이 흡수판(130)에 흡수되므로, 수광부(20)에서 감지되는 광량은 극히 적으므로 거의 "0"에 가까운 경우 기판이 없는 것으로 인식하게 된다.First, when there is no substrate, since the light of the light emitting unit 10 is absorbed by the absorbing plate 130, since the amount of light detected by the light receiving unit 20 is very small, it is recognized that there is no substrate when near to "0". .

한편, 도 5와 같이, 발광부(10)와 흡수판(130) 사이에 투명기판(40)이 위치하게 되면, 발광부(10)에서 나온 빛이 투명기판(40)에서 반사되므로, 수광부(20)에서는 일정량의 광량이 감지된다.On the other hand, as shown in FIG. 5, when the transparent substrate 40 is positioned between the light emitting unit 10 and the absorbing plate 130, the light emitted from the light emitting unit 10 is reflected by the transparent substrate 40. In 20), a certain amount of light is detected.

이를 도 6a와 도 6b에서 그래프로 도시하고 있는 바, 도 6a는 기판이 없는 경우에 광량이 거의 "0"임을 알 수 있다. 따라서 설정치(s)를 아주 낮게, 바람직하게는 "0"의 값보다 조금 크게 잡는 것이 좋다. 6A and 6B, which are shown graphically, it can be seen from FIG. 6A that the amount of light is almost "0" when there is no substrate. Therefore, it is better to set the set value s very low, preferably slightly larger than the value of "0".

그런데 기판이 있는 경우에는 도 6b에 나타낸 바와 같이, 광량이 설정치(s) 이상으로 나타나게 되는 것이다. By the way, when there is a substrate, as shown in Fig. 6B, the amount of light appears to be above the set value s.

이상에서 알 수 있는 바와 같이, 발광부(10)의 광량이 조금 적어지더라도, 발광부에서 발광되는 광량과 수광부(20)에서 감지되는 광량 사이에는 큰 마진(margin)을 가지게 되고, 기판의 유무에 따라 수광부(20)에서 감지되는 광량은 현저한 차이를 보이므로, 감지에러는 발생하지 않게 된다.As can be seen from above, even if the light amount of the light emitting unit 10 decreases slightly, there is a large margin between the light amount emitted from the light emitting unit and the light amount detected by the light receiving unit 20, and the presence or absence of the substrate As the amount of light detected by the light receiving unit 20 shows a remarkable difference, a detection error does not occur.

이상에서 본 발명에 따른 바람직한 실시예를 설명하였으나, 이는 예시이며, 본 발명의 정신을 벗어나지 않고 다양한 변화와 변형이 가능할 것이나, 이러한 다 양한 변화와 변형이 본 발명의 권리범위를 벗어나지 않는다는 것은 첨부된 청구범위를 통해 이해할 수 있을 것이다.Although the preferred embodiments according to the present invention have been described above, these are merely examples, and various changes and modifications may be made without departing from the spirit of the present invention, but the various changes and modifications do not depart from the scope of the present invention. It will be understood from the claims.

예를 들어, 본 발명에서 적용가능한 투명기판이 반드시 유리기판에 한정되는 것은 아니며, 흡수판의 모양 및 재질에 한정되는 것도 아니다. 아울러 액정표시장치의 제조공정 뿐 만 아니라 다양한 분야에서도 적용 가능하다.
For example, the transparent substrate applicable in the present invention is not necessarily limited to the glass substrate, and is not limited to the shape and material of the absorbing plate. In addition to the manufacturing process of the liquid crystal display device can be applied to various fields.

이상에서 알 수 있는 바와 같이, 본 발명에 따른 투명기판 감지장치로 인하여, 기판유무에 따른 결과치 광량의 차이가 종래의 반사판을 사용할때와 비교하여 커지게 되어 감지오류의 발생이 줄어들게 된다. As can be seen from above, due to the transparent substrate sensing apparatus according to the present invention, the difference in the resultant light amount according to the presence or absence of the substrate is increased compared to when using a conventional reflector plate, thereby reducing the occurrence of a detection error.

이에 따라 기판의 반송작업이 안정화되므로 기판의 파손피해을 방지할 수 있음은 물론이고, 기판 반송이 잘못된 경우, 중간에 수정할 수 있어 수율향상에 기여하게 된다.Accordingly, the transfer operation of the substrate is stabilized, thereby preventing damage to the substrate, and in the case of incorrect transfer of the substrate, it can be corrected in the middle, thereby contributing to yield improvement.

Claims (4)

광을 발광하는 발광부와;A light emitting unit for emitting light; 상기 발광부에서 발광된 빛이 반사되는 위치에 자리잡은 수광부와;A light receiving unit positioned at a position where the light emitted from the light emitting unit is reflected; 상기 발광부의 빛이 도달하는 흡수판Absorbing plate that the light of the light emitting portion 을 포함하고 있으며, 상기 흡수판과 상기 발광부 사이에 투명기판이 위치하도록 하는 투명기판감지장치And a transparent substrate sensing device such that a transparent substrate is positioned between the absorbing plate and the light emitting unit. 제 1 항에 있어서,  The method of claim 1, 상기 투명기판은 액정표시장치용 유리기판인 투명기판감지장치The transparent substrate is a transparent substrate sensing device that is a glass substrate for a liquid crystal display device 제 2 항에 있어서,  The method of claim 2, 상기 발광부 및 수광부는 액정표시장치용 건식식각 장비의 반송챔버내 위치한 투명기판 감지장치The light emitting unit and the light receiving unit are transparent substrate sensing devices located in a transport chamber of a dry etching device for a liquid crystal display device. 기판이 놓여질 위치를 기준으로 이의 일측에 위치하는 발광부 및 수광부 그리고 상기 발광부 및 수광부의 타측에 위치하는 흡수판을 포함하는 투명기판 감지장치에 있어서, A transparent substrate sensing device comprising a light emitting part and a light receiving part positioned on one side thereof based on a position on which a substrate is placed, and an absorbing plate located on the other side of the light emitting part and the light receiving part, 상기 발광부를 통해 기판이 놓여질 위치에 빛을 발광하는 단계와;Emitting light to a position where the substrate is to be placed through the light emitting unit; 상기 발광된 빛 중 상기 기판이 놓여질 위치에서 반사되어 상기 수광부로 수광되는 빛의 광량을 체크하는 단계와;Checking an amount of light reflected from the light-emitting portion at the position where the substrate is to be placed and received by the light receiving portion; 상기 수광된 광량이 설정치 이상이면, 상기 기판이 있는 것으로 판정하고, 상기 수광된 광량이 일정치 이하면 상기 기판이 없는 것으로 판정하는 단계Determining that the substrate exists if the amount of received light is greater than or equal to a set value, and determining that the substrate does not exist if the amount of received light is less than a predetermined value. 를 포함하는 투명기판 감지방법Transparent substrate detection method comprising a
KR1020010087681A 2001-12-29 2001-12-29 Transparent substrate sensing device and method Expired - Fee Related KR100806589B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020010087681A KR100806589B1 (en) 2001-12-29 2001-12-29 Transparent substrate sensing device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020010087681A KR100806589B1 (en) 2001-12-29 2001-12-29 Transparent substrate sensing device and method

Publications (2)

Publication Number Publication Date
KR20030057608A KR20030057608A (en) 2003-07-07
KR100806589B1 true KR100806589B1 (en) 2008-02-28

Family

ID=32215381

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010087681A Expired - Fee Related KR100806589B1 (en) 2001-12-29 2001-12-29 Transparent substrate sensing device and method

Country Status (1)

Country Link
KR (1) KR100806589B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11224856B2 (en) 2015-05-18 2022-01-18 Korea Research Institute Of Chemical Technology Adsorbents comprising organic-inorganic hybrid nanoporous materials for sorption of water or alcohol and use thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200164997Y1 (en) * 1995-12-22 2000-03-15 Samsung Electronics Co Ltd Apparatus for detecting wafer insertion status

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200164997Y1 (en) * 1995-12-22 2000-03-15 Samsung Electronics Co Ltd Apparatus for detecting wafer insertion status

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11224856B2 (en) 2015-05-18 2022-01-18 Korea Research Institute Of Chemical Technology Adsorbents comprising organic-inorganic hybrid nanoporous materials for sorption of water or alcohol and use thereof

Also Published As

Publication number Publication date
KR20030057608A (en) 2003-07-07

Similar Documents

Publication Publication Date Title
JP2007227781A (en) Misregistration inspection mechanism of substrate, processing system, and misregistration inspection method of substrate
CN100401465C (en) System and method for integrated multi-use optical alignment
JPH07153818A (en) Semiconductor wafer recognition equipment
KR100806589B1 (en) Transparent substrate sensing device and method
JPH11195695A (en) Electronic device manufacturing apparatus
JP2908227B2 (en) Semiconductor manufacturing equipment
JP2006080345A (en) Wafer carrying arm, and wafer carrying apparatus
KR20050016607A (en) Angled sensors for detecting substrates
KR100504695B1 (en) Semiconductor wafer mapping apparatus
JP2001313327A (en) Wafer support plate
CN219890369U (en) Wafer position protrusion recognition device
KR101087977B1 (en) Substrate Processing Equipment and Substrate Processing Method
KR100575561B1 (en) Wafer Seating Device
KR0125237Y1 (en) Wafer chuck for an etching apparatus
KR20050030025A (en) Wafer transferring apparatus
KR20050011403A (en) Semiconductor etching apparatus having a wafer detecting sensor in a shadow ring, and etching method using the same
KR19980044057A (en) Wafer Transfer System for Semiconductor Process
KR20020075583A (en) apparatus for controlling a substrate transfer using a semiconductor fabricating
JPH07113876A (en) Glass substrate detector
JPH10116878A (en) Photoelectric sensor and wafer detecting device
KR20050095932A (en) Wafer transferring apparatus
KR20030083370A (en) Wafer sensing apparatus of multifunction for semiconductor fabrication instruments
KR20010106893A (en) Robot arm apparatus for carrying wafer
KR19980068609A (en) Wafer photosensitive agent
KR20010086513A (en) Semiconductor wafer transfer equipment

Legal Events

Date Code Title Description
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

A201 Request for examination
P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PA0201 Request for examination

St.27 status event code: A-1-2-D10-D11-exm-PA0201

R17-X000 Change to representative recorded

St.27 status event code: A-3-3-R10-R17-oth-X000

E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

GRNT Written decision to grant
PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PG1601 Publication of registration

St.27 status event code: A-4-4-Q10-Q13-nap-PG1601

G170 Re-publication after modification of scope of protection [patent]
PG1701 Publication of correction

St.27 status event code: A-5-5-P10-P19-oth-PG1701

Patent document republication publication date: 20080408

Republication note text: Request for Correction Notice (Document Request)

Gazette number: 1008065890000

Gazette reference publication date: 20080228

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

FPAY Annual fee payment

Payment date: 20111221

Year of fee payment: 5

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 5

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 20130219

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

Not in force date: 20130219

P22-X000 Classification modified

St.27 status event code: A-4-4-P10-P22-nap-X000