WO2007135917A1 - 欠陥分布パターンの照合方法および装置 - Google Patents
欠陥分布パターンの照合方法および装置 Download PDFInfo
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- WO2007135917A1 WO2007135917A1 PCT/JP2007/060047 JP2007060047W WO2007135917A1 WO 2007135917 A1 WO2007135917 A1 WO 2007135917A1 JP 2007060047 W JP2007060047 W JP 2007060047W WO 2007135917 A1 WO2007135917 A1 WO 2007135917A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
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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
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67155—Apparatus for manufacturing or treating in a plurality of work-stations
- H01L21/67207—Apparatus for manufacturing or treating in a plurality of work-stations comprising a chamber adapted to a particular process
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
-
- 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
- H01L21/67288—Monitoring of warpage, curvature, damage, defects or the like
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30148—Semiconductor; IC; Wafer
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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
- H01L21/681—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 using optical controlling means
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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
- H01L21/687—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
- H01L21/68742—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 lifting arrangement, e.g. lift pins
Definitions
- the present invention relates to a distribution pattern of defects generated on the surface of an object to be processed such as a semiconductor wafer (hereinafter referred to as "pattern").
- the present invention relates to a method and an apparatus for matching a “defect distribution pattern” with a reference pattern indicating a characteristic shape such as a specific part of a processing system that contacts or approaches an object to be processed.
- various processing devices are arranged in a processing system that constitutes a manufacturing line, and a film forming process, an oxidative diffusion process, and an etching process are performed on a semiconductor wafer.
- various processes such as a modification process and an annealing process are repeatedly performed to manufacture a desired semiconductor device such as an IC (for example, JP-A-10-223732, JP-A-2001-338969, JP 2005-236094 A).
- the worker visually compares the defect distribution pattern obtained by the measurement as described above with the characteristic shape of the specific part of the processing system, and specifies the cause.
- the characteristic shapes of various parts of the processing system based on the design drawings and the memory of the operator, for example, the arrangement shape of the gas injection holes in the shower head of each processing container, and the defect distribution pattern on the wafer surface are compared. To do. Then, by identifying the parts such as the shower head that best match the two, the cause of the defect is identified.
- probe inspection is performed after completion of a product such as an integrated circuit, etc., and the inspection map and the defect map at that time are compared with the apparatus causing the failure. Can also be specified.
- the cause of the defect is identified by inspection. For this reason, many wafers processed during the operation are affected by the same cause of defects, and there is a risk that a large amount of defects and waste will occur. Disclosure of the invention
- the present invention has been devised to pay attention to the above problems and to effectively solve them.
- the object of the present invention is to determine the degree of coincidence between a specific shape of a specific part of a processing system that contacts or approaches the object to be processed and a defect distribution pattern generated on the surface of the object to be processed. It is an object of the present invention to provide a defect distribution pattern matching method and apparatus that can be quickly and quantitatively determined.
- the present invention provides, from a first aspect, a method for collating a distribution pattern of defects generated on a surface of an object to be processed processed by a processing system.
- the method when the degree of coincidence obtained is a certain reference value or more and less than Z, a specific part of the processing system corresponding to the reference pattern may be a cause of the occurrence of a defect. It is preferable that the method further includes a step of determining that high Z is low.
- the processing system includes a plurality of processing devices, and each processing device includes a processing container that accommodates an object to be processed, and a shower head having a plurality of gas injection holes that supply gas into the processing container.
- each processing device includes a processing container that accommodates an object to be processed, and a shower head having a plurality of gas injection holes that supply gas into the processing container.
- the characteristic arrangement pattern of the gas injection hole in each processing apparatus can be used as the reference pattern.
- Each processing apparatus also includes a processing container for storing the object to be processed, a mounting table for the processing object provided in the processing container, and a vertical movement with respect to the mounting table.
- a characteristic arrangement pattern of the lift pins in each processing apparatus can be used as the reference pattern.
- the processing system includes a plurality of transfer arms that transfer the object to be processed, and each transfer arm has a plurality of pads that support the back surface of the object to be processed, the characteristic of the pad in each transfer arm An arrangement pattern can be used as the reference pattern.
- the present invention provides defects generated on the surface of the object to be processed that are processed by the processing system using a plurality of cassette containers having a support shelf that supports the back surface of the object to be processed. How to match the distribution pattern of
- a defect distribution pattern matching method characterized by comprising: [0013]
- the present invention provides, from a second viewpoint, an apparatus for collating a distribution pattern of defects generated on the surface of a workpiece to be processed by a processing system.
- a reference pattern storage unit that stores in advance a reference pattern indicating a characteristic shape of a specific part that is in contact with and close to the object to be processed in the processing system;
- a defect inspection unit for inspecting an object processed by the processing system to obtain a distribution pattern of defects generated on the surface
- a pattern matching unit that matches the distribution pattern of the defect obtained by the defect inspection unit with the reference pattern stored in the storage unit;
- a matching result processing unit for obtaining a degree of matching between both patterns
- the collation result processing unit may further cause a specific part of the processing system corresponding to the reference pattern to cause a defect when the degree of coincidence is greater than or less than a certain reference value. It is preferable to be configured to determine that there is a high / low possibility.
- the defect distribution pattern matching method and apparatus According to the defect distribution pattern matching method and apparatus according to the present invention, the following excellent operational effects can be exhibited.
- the degree of coincidence between both patterns can be quickly and quantitatively determined. Therefore, the degree of coincidence can be obtained with high accuracy without depending on the experience and knowledge of the worker.
- matching with the defect distribution pattern to obtain the degree of coincidence enables effective prioritization of maintenance for solving the cause of the defect occurrence.
- FIG. 1 is a schematic diagram showing an example of a processing system which is a target of a defect distribution pattern matching method according to the present invention
- FIG. 2 is a schematic sectional view showing one of the processing apparatuses provided in the processing system of FIG. 1;
- FIG. 3 is a bottom view showing arrangement patterns (A) to (D) of gas injection holes of a shower head in the processing apparatus of FIG. 2;
- FIG. 4 is a plan view showing an arrangement pattern of lift pins in the processing apparatus of FIG. 2;
- FIG. 5 is a plan view showing a transfer arm provided in the processing system of FIG. 1;
- FIG. 6 is a block diagram showing an embodiment of a defect distribution pattern matching device according to the present invention.
- FIG. 7 is a plan view showing an example of a defect distribution pattern obtained by a defect inspection unit of the apparatus of FIG. 6;
- FIG. 8 is a flowchart showing a defect distribution pattern matching method executed by the apparatus shown in FIG. 6;
- FIG. 9 is a diagram showing an example of the matching degree and possibility determination result for each reference pattern.
- the processing system 2 includes a processing unit 4 having four processing devices, and a transfer unit 6 for loading and unloading the wafer W with respect to the processing unit 4.
- the processing unit 4 is configured to perform various processes such as a film forming process, a diffusion process, and an etching process on a semiconductor wafer (substrate) W as an object to be processed by each processing apparatus.
- the processing unit 4 includes a common transfer chamber 8 that can be evacuated and four processing apparatuses.
- Each processing apparatus has processing containers 12A to 12D connected to the transfer chamber 8 through gate valves 10A to 10D, respectively.
- Each container 12A to 12D is subjected to the same or different type of processing on the wafer W.
- mounting tables 14A to 14D for mounting the wafer W are provided in each of the containers 12A to 12D.
- the common transfer chamber 8 is provided with a first transfer mechanism 16 that can be bent and stretched so that the wafer W can be transferred between the containers 12A to 12D and between the load lock chambers described later. It has become.
- the first transport mechanism 16 has two transport arms 16A and 16B.
- Four pads 17A and 17B for supporting the back surface of the wafer W are provided on the upper surfaces of the transfer arms 16A and 16B, respectively.
- Each pad 17A, 17B directly contacts the back side of the wafer W on it. It is structured to touch and support.
- the transfer unit 6 includes a cassette stage 18 on which a cassette container is placed, and a transfer stage 22 having a second transfer mechanism 20 that transfers a wafer W.
- the cassette stage 18 is provided with a container mounting table 24 on which four cassette containers 26A to 26D can be mounted.
- 25 support shelves 28 that support the outer periphery of the bottom surface of the wafer W are provided at equal intervals in the vertical direction.
- the transport stage 22 is provided with a guide rail 30 that extends in the longitudinal direction X.
- the second transport mechanism 20 is supported on the guide rail 30 so as to be slidable.
- a moving mechanism for moving the second transport mechanism 20 along the guide rail 30 for example, a ball screw (not shown) is juxtaposed with the guide rail 30.
- the second transfer mechanism 20 has two transfer arms 20A and 20B. On the upper surface of each transfer arm 20A and 20B, four pads 21A and 21B for supporting the rear surface of the wafer W are provided. It has been. Each pad 21A, 21B is configured to support the back surface of the wafer W by directly contacting the pad 21A, 21B.
- an orienter 36 as a wafer W positioning mechanism is provided at one end of the transfer stage 22.
- Two load lock chambers 38 A and 38 B that are evacuated to connect the common transfer chamber 8 are provided on the side surface of the transfer stage 22 opposite to the cassette stage 18.
- substrate mounting tables 40A and 40B on which the wafer W is mounted are provided in each of the load lock chambers 38A and 38B.
- Gate valves 42A, 42B and 44A, 44B are provided between the load lock chambers 38A, 38B and the common transfer chamber 8 and the transfer stage 22, respectively.
- the orienter 36 has a turntable 46 and is rotated with the wafer W mounted thereon.
- An optical sensor 48 for detecting the peripheral edge of the wafer W is provided on the outer periphery of the turntable 46, and this fluctuation is detected by irradiating the edge of the wafer with light and formed on the wafer W. It has become possible to recognize notches and notches that have been.
- each processing apparatus each processing container 12A to 12D and the inside thereof
- each processing container 12A is removed except for the gas injection hole arrangement pattern in the shower head described later.
- ⁇ 12D and its basic configuration are set in the same way. Therefore, in FIG. 2, one processing container 12A is shown as a representative example.
- the gate valves 10A to 10D are provided on the side walls of the processing containers 12A to 12D.
- Heaters 50A to 50D such as resistance opening heaters are mounted on the mounting tables 14A to 14D provided in the processing containers 12A to 12D.
- a plurality of pin through holes 52A to 52D are formed in the mounting tables 14A to 14D, respectively.
- lifter pin mechanisms 54A to 54D are respectively provided corresponding to the mounting tables 14A to 14D.
- Each lifter pin mechanism 54A to 54D has lift pins 56A to 56D corresponding to the pin insertion holes 52A to 52D of the mounting table, respectively.
- the bases of the lift pins 56A to 56D are connected to arc-shaped pin holding plates 58A to 58D, for example, as shown in FIG.
- each pin holding plate 58A-58D is connected with the raising / lowering rod 60 (refer FIG. 2) provided by penetrating the bottom part of each processing container 12A-: 12D.
- the lift pins 56A to 56D are configured to be lifted and lowered with respect to the loading platforms 14A to 14D and to support the back surface of the wafer W when lifted.
- a bellows 62 that allows the ascending / descending of the ascending / descending rod 60 while maintaining airtightness inside the container is interposed in the penetrating portion of the ascending / descending rod 60.
- Exhaust ports 64 are provided at the bottoms of the processing containers 12A to 12D.
- Each processing apparatus includes an exhaust system (not shown) that exhausts the atmosphere in the containers 12A to 12D through the exhaust port 64.
- shower heads 66A to 66D having a plurality of gas injection holes 68A to 68D for supplying gas into the containers are provided above the processing containers 12A to 12D.
- gas injection holes 68A to 68D are formed on the bottom surfaces that face and face the mounting tables 14A to 14D.
- the arrangement patterns of the gas injection holes 68A to 68D on the bottom surfaces of the shower heads 66A to 66D form different characteristic arrangement patterns. For this reason, each shower head can be specified by the arrangement pattern of the gas injection holes 68A to 68D.
- the arrangement patterns of the gas injection holes 68A to 68D in the shower heads 66A to 66D are set as shown in FIGS. 3 (A) to (D), respectively.
- the arrangement patterns shown in FIGS. 3 (A) and 3 (B) are both grid-like, but the pitch P1 between the injection holes 68A shown in FIG. 3 (A) is the injection hole shown in FIG. 3 (B). Smaller than pitch P2 between 68B Is set.
- the arrangement pattern of the injection holes 68C shown in Figs. 3 (C) and (D) is a double cam, but the pitch P4 between the injection holes 68D shown in Fig. 3 (D) is shown in Fig. 3 (C). It is set smaller than the pitch P3 between the injection holes 68C shown.
- the arrangement patterns of the lift pins 56A to 56D in the processing containers 12A to 12D also form different characteristic arrangement patterns.
- the lift pins 56A to 56D have an arrangement pattern in which the pitch P5 between the lift pins is slightly different from each other (the pitch P5 between the lift pins 56A is representatively shown in FIG. 4).
- each transfer arm 16A, 16B, 20A, 20B has an arrangement pattern in which the pitch P6 between the pads is slightly different from each other (the pitch P6 between the pads 17A in FIG. 5). As a representative).
- a defect distribution pattern matching device 70 shown in FIG. 6 includes a defect inspection unit 72, a reference pattern storage unit 74, a pattern matching unit 76, a matching result processing unit 78, and an output unit 80.
- the inspection unit 72 inspects the wafer W processed by the processing system 2 and obtains a distribution pattern of defects generated on the surface thereof.
- the storage unit 74 stores in advance a reference pattern indicating a characteristic shape such as a specific part that contacts or is close to the wafer W in the processing system 2.
- the collation unit 76 collates the defect distribution pattern obtained by the inspection unit 72 with the reference pattern stored in the storage unit 74.
- the matching result processing unit 78 obtains the matching degree of both patterns based on the matching in the matching unit 76.
- the output unit 80 outputs data such as the obtained degree of coincidence.
- the storage unit 74, the collation unit 76, and the collation result processing unit 78 can be configured by a computer 82 that processes these functions in software.
- the computer 82 may be any type of computer such as a computer that controls the entire processing system 2, a dedicated computer, or a general-purpose computer.
- the defect detection unit 72 is a device that obtains this defect distribution pattern by detecting and mapping defects generated on the surface of the wafer W, and can use a known defect measuring machine.
- the reference patterns stored in advance in the storage unit 74 are:
- the pattern of the characteristic shape of the support shelf 28 of each cassette container 26A-26D can be used.
- the storage unit 74 can be partially deleted, supplemented, changed, etc. in accordance with replacement of parts in the processing system 2, repair, increase / decrease of the processing equipment, or change of the cassette container. It has become.
- the matching result processing unit 78 obtains a matching degree between the two patterns for each reference pattern based on the comparison between each reference pattern and the defect distribution pattern in the matching unit 76.
- the matching result processing unit 78 uses a known image recognition software or pattern matching software to quantitatively determine the degree of matching, for example, in units of percentage.
- the matching result processing unit 78 determines that a specific part of the processing system corresponding to the reference pattern (or a support shelf of a specific cassette container) is the cause of the occurrence of the defect. Judge that the possibility is high / low.
- the match criterion value is set to 50%, if the match is 50% or more, it is determined that the defect is likely to be the cause (NG), and is not 50% If it is full, it is determined that “the possibility of the occurrence of the defect is low ( ⁇ K)”.
- the judgment criterion value for the degree of coincidence can be variably set by an operator.
- the output unit 80 outputs the data including the degree of coincidence obtained by the collation result processing unit 78 and the determination result, for example, through a display 80 and a printer 80. Based on this output data, the operator makes a decision regarding the maintenance of the relevant parts.
- FIGS. 1 and 2 Prior to this explanation, the processing system 2 shown in FIGS. 1 and 2 is used. Each process for the semiconductor wafer w will be described. Here, in order to facilitate understanding of the invention, it is assumed that various processing is sequentially performed on the wafer in each of the processing containers 12A to 12D.
- a reciprocating transfer line between the cassette stage 18 on which the cassette containers 26A to 26D are placed and the processing containers 12A to 12D is a production line.
- an unprocessed semiconductor wafer W is taken out from a predetermined cassette container of the cassette stage 18, for example, the cassette container 26C, by one of the transfer arms of the second transfer mechanism 20, for example, the transfer arm 20B.
- the wafer W is transferred to an orienter 36 provided at one end of the transfer stage 22 and positioned.
- the positioned wafer W is held again by one of the transfer arms of the second transfer mechanism 20 and is carried into one of the two load lock chambers 40A and 40B.
- the wafer W in the load lock chamber is shifted by one of the two transfer arms 16A and 16B of the first transfer mechanism 16 in the same way. It is carried into the processing container, for example, the processing container 12A.
- the wafer W is supported on the lift pins 56A by moving the lift pins 56A in the processing container 12A up and down, and then placed on the mounting table 14A.
- the inside of the processing vessel 12A is airtight, the inside of the processing vessel 12A is maintained at a predetermined process pressure and process temperature while jetting a predetermined processing gas from each gas injection hole 68A of the shower head 66A. Thereby, a predetermined process such as a film forming process is performed on the wafer W, for example.
- the wafers W are sequentially transported to the other processing containers 12B to 12D using the first transport mechanism 16, and each processing capacity is processed each time.
- a path opposite to the above-described transport path is provided (however, it is not necessary to pass the orienter 36), and the original cassette container 26C has been processed. Wafer W is accommodated. In the same manner, all planned wafers W are processed.
- the processed wafer W is inspected to determine whether or not there is a defect exceeding the allowable amount on the surface. If there is a defect exceeding the allowable amount, the source of the defect is generated. I have to identify the cause and perform maintenance work. for that reason,
- the defect distribution pattern matching method according to the present invention is implemented using the matching device 70 shown in FIG.
- FIG. 7 is a diagram showing an example of the obtained defect distribution pattern, which is a pattern in which defects (indicated by dots) are scattered.
- the defect distribution pattern obtained by the inspection unit 72 is transferred as data to the pattern matching unit 76.
- the collation unit 76 collates the transferred defect distribution pattern with each reference pattern previously stored in the storage unit 74 (S2 in FIG. 8). This matching is performed by matching the coordinates of both patterns.
- the matching result processing unit 78 obtains the matching degree of both patterns for each reference pattern based on the matching in the matching unit 76 (S3 in FIG. 8). For example, as shown in FIG. 9, the degree of coincidence is obtained in percentage units. When 100%, the two patterns are completely matched, and when 0%, the two patterns are completely mismatched. It shows that there is.
- the matching result processing unit 78 performs matching degree determination for each reference pattern based on a preset matching degree determination reference value (S4 in FIG. 8). Specifically, if the criterion value for the degree of coincidence is set to 50%, as shown in Fig. 9, if the degree of coincidence is 50% or more, “there is a possibility that the defect is caused (NG If it is less than 50%, it is determined that the possibility of the occurrence of the defect is low (OK).
- the output unit 80 outputs the degree of coincidence and the determination result obtained by the collation result processing unit 78, for example, in a format as shown in FIG.
- the form of this output is arbitrary. For example, it is possible to display an image on the display 80A or print it on paper with the printer 80B and output it.
- the matching degree (%) and the possibility determination display (“NG" or " ⁇ K”) are displayed, and each reference pattern is distributed in the descending order of the matching degree. Is output.
- the arrangement pattern of the gas injection holes 68 ⁇ of the shower head 66 ⁇ is 90%, and the next highest is the arrangement pattern of the gas injection holes 68 ⁇ of the shower head 66 ⁇ of 60%.
- the arrangement pattern of the gas injection holes 68C of the shower head 66C is 30%
- the arrangement pattern of the gas injection holes 68D of the shower head 66D is 20%, etc., and gradually decreases.
- the defect distribution pattern force shown in FIG. 7 is a pattern that is very close to the arrangement pattern of the gas injection holes 68B in the shower head 66B shown in FIG. It has become. Accordingly, it is determined that there is a high possibility (NG) that the gas injection hole 68B is a cause of the occurrence of a defect (for example, a generation source of particles). Therefore, the operator refers to the results shown in Fig. 9 and conducts maintenance such as cleaning, repair, replacement, etc., preferentially in order from the highest degree of agreement, or only for parts with a possibility determination of "NG". Can do work.
- the lifter pins, transfer arm pads, and cassette container support shelves may cause defects in the corresponding parts of the wafer surface due to the influence of particles generated when contacting the edge of the wafer backside. . Therefore, it is possible to identify the cause of the occurrence of defects in these parts and the like based on the defect distribution pattern on the wafer surface.
- the reference pattern indicating the characteristic shape recorded (stored) in advance and the defect distribution pattern obtained by the inspection are collated by the pattern collation unit 76 of the computer 82, whereby both patterns are obtained.
- the degree of coincidence can be obtained quickly and quantitatively. Therefore, not only can the degree of coincidence be determined with high accuracy without being affected by the experience and knowledge of the operator, but also the specific part of the processing system and the cassette container that cause the occurrence in a short time can be accurately identified. Can be specified.
- the degree of coincidence is obtained by collating with the defect distribution pattern, and the output unit 80 distributes them in the descending order of the degree of coincidence and outputs them to solve the cause of the defect occurrence. Can be effectively prioritized for maintenance.
- each processing apparatus may be configured to perform different processes such as a film forming process, an etching process, an oxidation diffusion process, a modification process, and an annealing process.
- it may be a processing apparatus that does not have a shower head.
- a processing apparatus that does not have a shower head.
- a part or article that may cause a defect is used as a reference pattern of the present invention, such as an arrangement pattern indicating the characteristic shape thereof. be able to.
- one processing system 2 shown in FIG. 1 is a verification target
- the verification target is not limited to this.
- a production line for a pre-process or a post-process different from the processing system 2 can be targeted.
- the defect distribution pattern data may be classified into defect categories such as “attachment of foreign matter” and “short circuit pattern”, for example, and the defect pattern and the reference pattern may be collated for each category. .
- the category of “attachment of foreign matter” may be further subdivided into subcategories such as “adhesion of organic particles”.
- the present invention is not limited thereto, and the present invention can also be applied to a glass substrate, an LCD substrate, a ceramic substrate, and the like.
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US12/301,467 US8131057B2 (en) | 2006-05-19 | 2007-05-16 | Defect distribution pattern comparison method and system |
CN2007800154031A CN101432866B (zh) | 2006-05-19 | 2007-05-16 | 缺陷分布图案的对照方法和装置 |
KR1020087028045A KR101187516B1 (ko) | 2006-05-19 | 2007-05-16 | 결함 분포 패턴의 대조 방법 및 장치 |
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JP2006-140060 | 2006-05-19 | ||
JP2006140060A JP4882505B2 (ja) | 2006-05-19 | 2006-05-19 | 異物分布パターンの照合方法及びその装置 |
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WO2007135917A1 true WO2007135917A1 (ja) | 2007-11-29 |
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PCT/JP2007/060047 WO2007135917A1 (ja) | 2006-05-19 | 2007-05-16 | 欠陥分布パターンの照合方法および装置 |
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US (1) | US8131057B2 (ja) |
JP (1) | JP4882505B2 (ja) |
KR (1) | KR101187516B1 (ja) |
CN (1) | CN101432866B (ja) |
WO (1) | WO2007135917A1 (ja) |
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JP2015026671A (ja) * | 2013-07-25 | 2015-02-05 | 大日本印刷株式会社 | 欠陥解析方法、凹凸パターン構造体の製造方法及びインプリントシステム |
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JP2009218570A (ja) * | 2008-02-15 | 2009-09-24 | Fujitsu Microelectronics Ltd | 欠陥管理システム及び欠陥管理方法 |
JP5444092B2 (ja) * | 2010-04-06 | 2014-03-19 | 株式会社日立ハイテクノロジーズ | 検査方法およびその装置 |
KR101579448B1 (ko) | 2013-05-30 | 2015-12-23 | 삼성에스디에스 주식회사 | 불량 샘플의 결함 맵을 이용한 문제 설비 판정 방법 및 그 장치 |
JP6459940B2 (ja) * | 2015-12-08 | 2019-01-30 | 株式会社Sumco | 特定欠陥の検出方法、特定欠陥の検出システムおよびプログラム |
JP6333871B2 (ja) * | 2016-02-25 | 2018-05-30 | ファナック株式会社 | 入力画像から検出した対象物を表示する画像処理装置 |
JP2022072520A (ja) * | 2020-10-30 | 2022-05-17 | 株式会社ディスコ | ノッチ検出方法 |
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- 2007-05-16 WO PCT/JP2007/060047 patent/WO2007135917A1/ja active Application Filing
- 2007-05-16 US US12/301,467 patent/US8131057B2/en not_active Expired - Fee Related
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Also Published As
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CN101432866B (zh) | 2011-05-25 |
KR20080112383A (ko) | 2008-12-24 |
CN101432866A (zh) | 2009-05-13 |
JP2007311611A (ja) | 2007-11-29 |
US8131057B2 (en) | 2012-03-06 |
KR101187516B1 (ko) | 2012-10-02 |
US20090316980A1 (en) | 2009-12-24 |
JP4882505B2 (ja) | 2012-02-22 |
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