WO2014148604A1 - ガラス基板生産管理システム及びガラス基板生産管理方法 - Google Patents
ガラス基板生産管理システム及びガラス基板生産管理方法 Download PDFInfo
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- WO2014148604A1 WO2014148604A1 PCT/JP2014/057755 JP2014057755W WO2014148604A1 WO 2014148604 A1 WO2014148604 A1 WO 2014148604A1 JP 2014057755 W JP2014057755 W JP 2014057755W WO 2014148604 A1 WO2014148604 A1 WO 2014148604A1
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- glass substrate
- defects
- sided glass
- sided
- upstream
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0637—Strategic management or analysis, e.g. setting a goal or target of an organisation; Planning actions based on goals; Analysis or evaluation of effectiveness of goals
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/037—Controlling or regulating
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/401—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35162—Determine workpiece placement, nesting in blank, optimize, minimize loss material
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- the present invention relates to a glass substrate production management system, and more specifically, a multi-sided glass substrate having a plurality of virtual single surfaces produced in an upstream process is subjected to product-related processing in a downstream process and a plurality of single-surface glasses.
- the present invention relates to a glass substrate production management system including a procedure for dividing into plates.
- glass substrates and organic ELs used in flat panel displays such as plasma displays, liquid crystal displays, field emission displays (including surface emission displays), electroluminescence displays, and organic EL displays.
- FPDs flat panel displays
- a glass substrate used for lighting, a glass substrate used for tempered glass that is a constituent element of a touch panel, a panel of a solar cell, or a glass substrate used for other electronic devices is a so-called multiple surface for the purpose of improving productivity. The actual situation is that the use as a glass substrate is promoted.
- the mother glass is sequentially produced one by one as the most upstream process, and the mother glass is cut into a plurality of single-sided glass as the downstream process. It is divided into a plurality of single-sided glass plates after being divided into plates, or subjected to product-related processing such as formation of films and circuit patterns corresponding to a plurality of display screens on the surface of the mother glass.
- Patent Document 1 a multi-sided glass substrate having a defect at a specific location is wasted in the process from the upstream process to the downstream process by handling it as a non-defective product. Is disclosed.
- each multi-surface glass substrate is not wasteful so that all of the multi-surface glass substrates for four surfaces are not wasted due to a defect of one surface.
- Defect information such as the position, type and size of the defect is transmitted from the upstream processer to the downstream processer. It is discarded as a glass plate.
- Patent Document 1 needs to study and install a method for transmitting defect information from a processor in an upstream process to a processor in a downstream process, and to do so. Therefore, the complexity of inventory management and the complexity of product production planning become remarkable, and there is a problem that actual operation becomes difficult.
- the technique disclosed in this document simply discards the single-sided glass plate that has been subjected to product-related processing in the downstream process, based on the defect information transmitted from the upstream process to the downstream process. Therefore, it is not clear whether or not the processor in the downstream process suffers a significant loss, and as a result, the processor in the downstream process suffers a very large loss. Yes.
- the present invention has been made in view of the above circumstances, and eliminates the need to transmit individual defect information of a multi-sided glass substrate from an upstream process to a downstream process, and the upstream processers and downstream It is an object of the present invention to provide a glass substrate production management system in consideration of total profit and loss with a processor in a side process.
- the first aspect of the present invention created to solve the above problems is a procedure for dividing a multi-sided glass substrate produced in an upstream process into a plurality of single-sided glass plates by performing product-related processing in a downstream process.
- a glass substrate production management system including a defect data relating to a defect in a single lot of multi-sided glass substrate in an upstream process and a defect in the single lot of multi-sided glass substrate in an upstream process.
- the multi-sided glass substrate is considered as a non-defective product, and the benefits received by the processor in the upstream process by sending it to the downstream side process.
- the above-mentioned “one lot” means, in a narrow sense, a collection of products manufactured under the same conditions, but is not limited thereto, and in a broad sense, the same kind whose quality is controlled by the same manager. Means a collection of products (same below).
- the benefit received by the processor in the upstream process and the loss received by the processor in the downstream process are based on the defect data created in the upstream process, and there are defects in the multi-sided glass substrate. It is calculated based on the number of virtual single planes that are being used. Therefore, it is possible to send individual multi-sided glass from the upstream process to the downstream process so that the result that the profit exceeds the loss is obtained. As a result, the profit received by the processor in the upstream process and the loss received by the processor in the lower process can be made a total profit, so if this profit is distributed between the two, both You can make a profit.
- the upstream processer considering the total profit and loss between the upstream processer and the downstream processer, it is determined whether the multi-sided glass substrate is a good product or a defective product, so the upstream processer Thus, there will be no adverse effects such as only the person in charge of the process or the downstream inversion process receiving an undue loss.
- the second aspect of the present invention created to solve the above problems is a procedure for dividing a multi-sided glass substrate produced in an upstream process into a plurality of single-sided glass plates by performing product-related processing in a downstream process.
- defect data obtained by performing defect inspection by extracting 10 or more multi-sided glass substrates from 10 or more lots of multi-sided glass substrates in the upstream process Based on this, the total number of defects present in the extracted multi-surface glass substrate is detected, and the total number of defects is divided by the total area of the multi-surface glass substrate surface to be inspected.
- the first inspection means for calculating the multi-sided glass substrate of the one lot in the upstream process, and the multi-sided glass substrate in which the defect exists is preliminarily regarded as a non-defective product and sent to the downstream process. And the presence of the defects when the product is processed into a single-sided glass plate by performing product-related processing on a multi-sided glass substrate preliminarily regarded as a non-defective product.
- the loss received by the processor in the downstream process due to the occurrence of defective products is caused by using the lot average defect density and varying the number of virtual single surfaces on which the defects exist several times. If the profit exceeds the loss based on the result of the trial calculation, the virtual single surface in which the defect exists is regarded as the absence of the defect.
- Trial calculation means for calculating the allowable number of faces indicating the number of faces in a single multi-sided glass substrate, and the defect exists by inspecting the total number of multi-sided glass substrates of the one lot in the upstream process.
- Total number of virtual single faces The multi-sided glass substrate in which the second inspection means and the real number of virtual single faces where the defects exist are within the allowable number of faces calculated by the trial calculation means. It is characterized in that it includes a non-defective product which is a non-defective product which is sent to the downstream process in addition to the picked glass substrate, and which is a defective product which is discarded in the upstream process.
- the “benefits received by the processor in the upstream process” in the above-mentioned calculation means are the profits that can be obtained in comparison with the conventional system in which the multi-sided glass substrate in which even one defect exists is discarded.
- “loss received by the processor in the downstream process” means that if there is a conventional system, there were no defects due to the upstream process on the entire surface of the multi-faced glass substrate. It is a loss that occurs in comparison with the fact that all single-sided glass plates obtained by performing product-related treatment on them were good.
- the “product-related process” is a process for forming a film, a circuit pattern, or the like corresponding to a display screen on the surface of a multi-sided glass substrate.
- the “allowable number of surfaces” means that when a multi-faced glass that has been treated as a defective product due to the presence of one or more defects is allowed as a non-defective product, the multi-faced glass substrate has a defect.
- the number of virtual single faces hereinafter the same).
- a processor in the upstream process sequentially manufactured a multi-faced glass substrate such as a rectangle using a molding apparatus or the like, and the production of a multi-faced glass substrate of 10 or more lots was completed.
- the first inspection means counts the number of defects existing on the entire surface of each multi-faced glass based on the defect data of defect inspection performed by extracting an appropriate number of pieces,
- the lot average defect density of a group of multi-faced glass substrates is calculated by dividing the total number by the total area of the surface of the inspected multi-face glass substrate.
- the trial calculation means sequentially changes the number of virtual single surfaces on which the defect exists, and the benefits received by the processor in the upstream process over a plurality of times in advance, and the processor in the downstream process. Is estimated using the above-mentioned lot average defect density.
- the trial calculation means uses the allowable number of cases in which the above profit exceeds the above loss (if the multi-sided glass that was treated as a defective product in the conventional system is allowed as a non-defective product, the The number of virtual single surfaces having defects on the chamfered glass substrate is calculated.
- the multi-surface picking is performed based on the unit price per multi-surface glass substrate in the upstream process and the lot average defect density, and the number of virtual single surfaces on which the defect exists is the allowable number of surfaces. From the yield of the glass substrate (non-defective product rate), the benefit received by the processor in the upstream process is clarified.
- the defect is calculated from the unit price per single-surface glass plate and lot average defect density when product-related processing is performed on the multi-surface glass substrate in the downstream process and divided into a plurality of single-surface glass plates, and the defect
- the multi-faced glass substrate including the virtual single face where the present is present being sent to the downstream process corresponding to the allowable number of faces
- the single glass sheet after the division in the downstream process contains defects.
- the loss experienced by the processor in the downstream process is determined from the failure rate.
- the pass / fail judgment means actually checks for defects.
- the existing virtual single surface is the allowable number of surfaces calculated by the trial calculation means, it is considered as a non-defective product and sent to the downstream process together with the multi-surface glass substrate having no defects at all.
- the collected glass substrate is discarded as a defective product in the upstream process.
- the profit received by the processor in the upstream process and the loss received by the processor in the lower process become a total profit, so if this profit is distributed between the two, both can make a profit. .
- the upstream process By performing the operation as described above, it is possible to judge the quality of the multi-sided glass substrate only in the upstream process in a state where the edge from the downstream process is cut, and accordingly, the upstream process Since it is no longer necessary to transmit defect information from the processor in the side process to the processor in the downstream process, it is advantageous in terms of equipment, inventory management, production planning, etc., and actual operations can be performed easily. It becomes.
- the multi-sided glass substrate is a non-defective product or a defective product. No adverse effects occur such as only the person who is in the process or only the person who is in the downstream inversion process receives an undue loss.
- the third aspect of the present invention which was created to solve the above-described problems, divides a multi-sided glass substrate produced in the upstream process into a plurality of single-sided glass plates by performing product-related processing in the downstream process.
- a glass substrate production management system including a procedure for performing a defect inspection by extracting 10 or more multi-sided glass substrates from one or more lots of multi-sided glass substrates in an upstream process. Based on the data, the total number of defects present in the extracted multi-surface glass substrate is detected, and the total number of defects is divided by the total area of the multi-surface glass substrate surface to be inspected.
- the inspection means for inspecting the total number of the multi-surface glass substrates of the one lot and counting the actual number of virtual single surfaces on which the defect exists, For the multi-faced glass substrate, the benefits received by the processor in the upstream process by preliminarily considering the multi-faced glass substrate with defects as a good product and sending it to the downstream process, and the preliminary good product Loss incurred by the processor in the downstream process due to the occurrence of defective products due to the presence of the defects when product-related processing is performed on a multi-sided glass substrate regarded as being divided into a plurality of single-sided glass plates And using the lot average defect density, the number of virtual single surfaces on which the defect exists is varied over a plurality of times, and the profit is calculated based on the result of the trial calculation.
- the number of allowable planes indicating the number of virtual single planes on which a single-sided glass substrate is regarded as having no defects when the virtual single planes with the defects exist are considered to be non-defects.
- the glass substrate it is characterized in that it includes a non-defective product that is sent as a non-defective product to be sent to the downstream process, and other multi-sided glass substrate is a defective product that is discarded in the upstream process.
- This third aspect of the present invention differs from the above-mentioned second aspect of the present invention in that a single inspection means is used to calculate a lot average defect density, and there are defects in the total number of multi-sided glass substrates in one lot. This is the point that the actual number of virtual single planes being counted is performed at the same time. Since the other configuration is the same, description of the operation or effect thereof is omitted here.
- the fourth invention of the present invention which was created to solve the above-mentioned problems, divides a multi-sided glass substrate produced in the upstream process into a plurality of single-sided glass plates by performing product-related processing in the downstream process.
- a glass substrate production management system including a procedure for performing a defect inspection by extracting 10 or more multi-sided glass substrates from one or more lots of multi-sided glass substrates in an upstream process. Based on the data, the total number of defects present in the extracted multi-surface glass substrate is detected, and the total number of defects is divided by the total area of the multi-surface glass substrate surface to be inspected.
- the inspection means for inspecting the total number of the multi-sided glass substrates of one lot and counting the actual number of virtual single surfaces on which the defects exist, and the size and arrangement of the virtual single surfaces Is determined, and the upstream process by sending the multi-faced glass substrate in which defects are present to the downstream process preliminarily as a non-defective product for the one-lot multi-faced glass substrate in the upstream process.
- the product is processed into a single-sided glass plate by performing product-related processing on those multi-sided glass substrates that are preliminarily regarded as non-defective products, defective products due to the presence of the defects
- the tentatively determined virtual single surface is made different in size and arrangement, and is calculated several times. Based on the results of the calculation, the tentatively determined virtual one surface is determined when the profit exceeds the loss.
- the number of virtual single planes on which a single-sided glass substrate is considered to be a virtual single side where the defects exist is regarded as a non-existent defect is determined. While calculating the allowable number of surfaces shown, using the defect data obtained by the inspection means, the trial calculation means for calculating the actual number of virtual single surface where the defect exists for each glass substrate, A multi-faced glass substrate in which the actual number of virtual single faces on which defects counted by the inspection means are present is within the allowable number of faces calculated by the trial calculation means is taken on multiple faces without any defects.
- the glass substrate In addition to the glass substrate, it is characterized in that it includes a non-defective product that is sent as a non-defective product to be sent to the downstream process, and other multi-sided glass substrate is a defective product that is discarded in the upstream process.
- the fourth aspect of the present invention differs from the third aspect of the invention described above in that the calculation of the allowable number of faces in the trial calculation means is performed after determining the size and arrangement of the virtual single face.
- the actual number of virtual single faces where the defects exist is calculated for each multi-faced glass substrate. This is the point. Since the other configuration is the same, description of the operation or effect thereof is omitted here.
- the harmless area relief rate is defined as a harmless area relief rate obtained by dividing the area of the harmless area into multiple harmless areas and dividing the area of the harmless area by the area of the glass substrate, and calculating the harmless area relief rate by the calculation means. Can be used.
- the processor in the upstream process is a manufacturer of mother glass as a multi-sided glass substrate for a flat panel display
- the processor in the downstream process is a middle panel of a flat panel display. It may be the final manufacturer.
- the processor in the upstream process sequentially manufactures the rectangular mother glass by the downdraw method or the float method, and performs the above-described operation, there is a defect in the mother glass that is finally handled as a non-defective product.
- the number of existing virtual single planes can be estimated.
- the panel manufacturer performs a normal inspection and eliminates defective products, so that the mother glass manufacturer and the panel manufacturer gain a profit when the profits and losses of both are totaled. .
- the processor in the upstream process is a manufacturer of mother glass as a multi-sided glass substrate for a flat panel display, and the processor in the downstream process simply cuts from the mother glass of the flat panel display.
- the manufacturer who processes into a surface glass plate may be sufficient.
- the fifth aspect of the present invention which was created to solve the above problems, is a procedure for dividing a multi-sided glass substrate produced in an upstream process into a plurality of single-sided glass plates by performing product-related processing in a downstream process.
- a glass substrate production management method including the step of creating defect data relating to defects in a single lot of multi-sided glass substrates in an upstream process, and the presence of defects in the single lot of multi-sided glass substrates in an upstream step
- the multi-sided glass substrate is considered as a non-defective product, and the benefits received by the processor in the upstream process by sending it to the downstream side process.
- the loss incurred by the processor in the downstream process due to the occurrence of a defective product due to the presence of the defect when divided into single-sided glass plates is the multi-faced glass. Whether to send each multi-sided glass substrate from the upstream process to the downstream process based on the comparison result between the profit and the loss. It is characterized by determining.
- the fifth aspect of the present invention relates to the glass substrate production management method, but the substantial operation or effect is the same as that of the glass substrate production management system according to the first aspect of the present invention. Then, the explanation is omitted.
- the sixth aspect of the present invention devised to solve the above problems is a procedure for dividing a multi-sided glass substrate produced in an upstream process into a plurality of single-sided glass plates by performing product-related processing in a downstream process.
- the defect data obtained by extracting 10 or more multi-sided glass substrates from a multi-sided glass substrate of 10 or more lots in the upstream process and performing defect inspection Based on this, the total number of defects present in the extracted multi-surface glass substrate is detected, and the total number of defects is divided by the total area of the multi-surface glass substrate surface to be inspected.
- the first inspection step for calculating the multi-sided glass substrate of the one lot in the upstream side process is preliminarily regarded as a non-defective multi-sided glass substrate with defects and sent to the downstream side process. Due to the existence of the above-mentioned defects when it is divided into a plurality of single-sided glass plates by performing product-related processing on the multi-sided glass substrate preliminarily regarded as non-defective products.
- the loss received by the processor in the downstream process due to the occurrence of a defective product, and using the lot average defect density, the number of the virtual single surface where the defect exists is different multiple times
- a virtual single face where the virtual single face where the defect exists is regarded as a non-existent defect when the profit exceeds the loss based on the result of the trial calculation Is a trial calculation process for calculating the number of allowable surfaces indicating how many are in a single multi-sided glass substrate, and the defect exists by inspecting the total number of multi-sided glass substrates in one lot in the upstream process.
- the actual number of virtual faces The second inspection step and a multi-surface glass substrate in which the actual number of virtual single surfaces on which the defect exists is within the allowable number of surfaces calculated by the trial calculation means, and multi-surface sampling on which no defect exists at all
- the non-defective product is provided as a non-defective product to be sent to the downstream process
- the other multi-sided glass substrate is a defective product to be discarded in the upstream process.
- the sixth aspect of the present invention relates to the glass substrate production management method, but the substantial operation or effect is the same as that of the glass substrate production management system according to the second aspect of the present invention. Then, the explanation is omitted.
- the seventh aspect of the present invention which was created to solve the above problems, divides a multi-sided glass substrate produced in the upstream process into a plurality of single-sided glass plates by performing product-related processing in the downstream process.
- a glass substrate production management method including a procedure for performing a defect inspection by extracting 10 or more multi-sided glass substrates from one or more multi-sided glass substrates of 10 or more lots in an upstream process. Based on the data, the total number of defects present in the extracted multi-surface glass substrate is detected, and the total number of defects is divided by the total area of the multi-surface glass substrate surface to be inspected.
- the benefits received by the processor of the upstream process by preliminarily considering the multi-sided glass substrate with defects as a non-defective product and sending it to the downstream process, and preliminarily regarded as the non-defective product
- the loss received by the processor in the downstream process due to the occurrence of defective products due to the presence of the defects when product-related processing is performed on the multi-sided glass substrate that has been divided into a plurality of single-sided glass plates
- the lot average defect density the number of virtual single surfaces on which the defect is present is varied to make a trial calculation several times, and the profit exceeds the loss based on the result of the trial calculation.
- the number of allowable planes indicating the number of virtual single planes on a single multi-sided glass substrate that considers the virtual single planes with the defects to be non-existent.
- the non-defective product is provided as a non-defective product to be sent to the downstream process
- the other multi-sided glass substrate is a defective product to be discarded in the upstream process.
- the seventh aspect of the present invention relates to a glass substrate production management method, but the substantial operation or effect is the same as that of the above-described glass substrate production management system according to the third aspect of the present invention. Then, the explanation is omitted.
- the eighth invention of the present invention which was created to solve the above problems, divides a multi-sided glass substrate produced in an upstream process into a plurality of single-sided glass plates by performing product-related processing in the downstream process.
- a glass substrate production management method including a procedure for performing a defect inspection by extracting 10 or more multi-sided glass substrates from one or more multi-sided glass substrates of 10 or more lots in an upstream process. Based on the data, the total number of defects present in the extracted multi-surface glass substrate is detected, and the total number of defects is divided by the total area of the multi-surface glass substrate surface to be inspected.
- a defect density is calculated, and an inspection step of performing defect inspection on the total number of the multi-surface glass substrates of the one lot to count the actual number of virtual single surfaces on which the defects exist, and the size and arrangement of the virtual single surfaces
- the multi-sided glass substrate of the one lot in the upstream side process is preliminarily regarded as a non-defective product and sent to the downstream side process.
- a product-related process is performed on a multi-sided glass substrate that is preliminarily regarded as a good product and divided into a plurality of single-sided glass plates, defective products are generated due to the existence of the defects.
- a trial calculation step of calculating the allowable number of surfaces and using the defect data obtained in the inspection step to calculate the actual number of virtual single surfaces where the defects exist for each glass substrate, and the inspection A multi-sided glass substrate in which the actual number of virtual single faces on which defects counted in the process are present is within the allowable number of faces calculated by the trial calculation means, multi-sided glass having no defects at all
- the non-defective product is provided as a non-defective product to be sent to the downstream process
- the other multi-sided glass substrate is a defective product to be discarded in the upstream process.
- the eighth aspect of the present invention relates to the glass substrate production management method, the substantial operation or effect is the same as that of the glass substrate production management system according to the fourth aspect of the present invention. Then, the explanation is omitted.
- the surface of the multi-sided glass substrate on which the product-related processing is performed in the downstream process is harmful to the defects that are harmful to the product-related processing.
- the harmless area relief rate is determined by dividing the area into harmless areas where defects are harmless to product-related processing, and taking the area of the harmless area and dividing it by the area of the glass substrate. , And can be used for calculations performed in the trial calculation means (trial calculation step).
- the processor in the upstream process is a manufacturer of mother glass as a multi-sided glass substrate for a flat panel display
- the processor in the downstream process may be an intermediate or final manufacturer of the panel of the flat panel display, or the processor in the upstream process is a mother glass as a multi-sided glass substrate for a flat panel display.
- disconnects from the mother glass of a flat panel display, and processes it into a single-sided glass plate may be sufficient.
- the present invention it is not necessary to transmit the defect information of the multi-sided glass substrate from the upstream process to the downstream process, and the total of the processor in the upstream process and the processor in the downstream process.
- Glass substrate production management system that takes into account the overall profit and loss.
- FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and shows a multi-sided glass substrate subjected to manufacturing-related processing.
- FIG. FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and shows a multi-sided glass substrate subjected to manufacturing-related processing.
- FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and a plurality of multi-sided glass substrates subjected to manufacturing-related processing; It is the schematic which shows the state divided
- FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and a plurality of multi-sided glass substrates subjected to manufacturing-related processing; It is the schematic which shows the state divided
- FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and a plurality of multi-sided glass substrates subjected to manufacturing-related processing; It is the schematic which shows the state divided
- FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and a plurality of multi-sided glass substrates subjected to manufacturing-related processing; It is the schematic which shows the state divided
- FIG. 1 is a diagram for explaining a process of actually manufacturing a single-sided glass plate using a glass substrate production management system according to an embodiment of the present invention, and a plurality of multi-sided glass substrates subjected to manufacturing-related processing; It is the schematic which shows the state divided
- FIG. 1 is a schematic configuration diagram illustrating a main configuration of a glass substrate production management system (hereinafter simply referred to as a production management system) according to an embodiment of the present invention
- FIG. 2 is a flowchart illustrating a procedure of the production management system.
- FIGS. 3 to 7 are schematic diagrams showing the implementation status of the production management system.
- the multi-sided glass substrate 1 has a rectangular shape, and a region excluding the edges of the four sides is virtually divided into eight virtual single surfaces 2.
- the multi-sided glass substrate 1 is formed by a downdraw method or a float method in an upstream process and cut into a predetermined size (for example, a horizontal dimension of 1400 to 2600 mm and a vertical dimension of 1600 to 2800 mm).
- FIG. 3 b shows a state where processing such as formation of a film or a circuit pattern is performed on all virtual single surfaces 2 of the multi-faced glass substrate 1 in the downstream step
- FIG. 3 c shows the downstream step.
- Each processed virtual single surface 2 is shown as being divided into single glass plates 3.
- the production management system S includes a first inspection means A that is obtained by extracting a predetermined number of glass substrates 1 from a multi-sided glass substrate 1 of 10 or more lots in an upstream process, and detection by the first inspection means A. Pass / fail judgment performed based on the trial calculation means B performed based on the result, the second inspection means C performed on the total number of one lot, the calculation result of the trial calculation means B, and the detection result of the second inspection means. Means D. And the result of this quality determination means D is reflected in a downstream process. Therefore, all the processes for one lot of the multi-sided glass substrate 1 are performed in the upstream process.
- the first inspection means A was extracted based on defect data of defect inspection performed by extracting 10 or more multi-sided glass substrates 1 from 10 or more multi-sided glass substrates 1.
- the total number of defects present in the multi-sided glass substrate 1 is detected, and the lot average defect density is calculated by dividing the total number of defects by the total area of the surface of the glass substrate 1 to be inspected. is there.
- the defect here means a defect that causes a problem in the downstream process.
- the trial calculation means B first treats a lot of multi-sided glass substrate 1 as an upstream side process by preliminarily considering the multi-sided glass substrate 1 having defects as a non-defective product and sending it to the downstream side process. Seeking the profits that will receive. This calculation is based on the unit price per multi-surface glass substrate in the upstream process and the lot average defect density, and the number of virtual single surfaces 2 on which the defects exist is the provisional allowable number of surfaces. It is calculated
- a product-related process (a process of forming a film, a circuit pattern, or the like corresponding to a display screen on the surface of the multi-sided glass substrate 1) is performed on the multi-sided glass substrate 1 that is preliminarily regarded as a non-defective product.
- segments into this single-sided glass plate 3 is calculated
- the defect corresponding to the provisional allowable number of surfaces is sent to the downstream process and is obtained from the yield that is included in the single-sided glass plate 3 and becomes defective.
- the trial calculation means B makes a trial calculation several times to obtain the above-mentioned profit and the above-mentioned loss by varying the number of virtual single surfaces on which the above defects exist, Based on the above, the true allowable number of virtual single faces on which the defect exists is calculated when the above-mentioned profit exceeds the above-mentioned loss (more preferably, the profit is the maximum within the estimated range). To do.
- the second inspection means C performs defect inspection on the total number of the multi-sided glass substrates 1 of the one lot, stores the inspection results, and stores the defect data as the stored inspection results on the multi-sided glass substrate 1.
- the allowable number of virtual single surfaces on which defects are present is counted based on the defect data while collating with virtual lines defining each virtual single surface 2.
- the trial calculation means B calculates the actual number of virtual single faces in which the defects actually measured by the second inspection means C are present from one lot of the multi-surface glass substrate 1.
- the multi-sided glass substrate 1 that is the true allowable number of virtual single surfaces having defects is a non-defective product that is sent to the downstream process in addition to the multi-sided glass substrate 1 having no defects. And let other multi-sided glass substrate 1 be inferior goods discarded in an upstream process.
- Step S1 corresponds to the first detection means A, and here, for 10 or more lots of multi-sided glass substrates 1 formed by a downdraw method, a float method or the like and subjected to predetermined processing, About the multi-surface glass substrate 1 from which 10 or more are extracted, defects are inspected, the total number of defects is counted, and a lot average defect density is calculated by dividing it by the total inspection area.
- an optical automatic defect detection device is used, but in the first inspection means A, each virtual single surface 2 of the multi-sided glass substrate 1 is partitioned. It is not necessary to know the virtual line in advance.
- step S2 when it is assumed that the inspected multi-sided glass substrate 1 is regarded as a non-defective product in the downstream process, the number i of virtual single sides 2 having defects in the multi-sided glass substrate 1 is counted from 1. The number is determined one by one in order up to 8 (in some cases, the maximum number less than 8).
- step S3 the cumulative profit received by the processor in the upstream process is compared with the cumulative loss received by the processor in the downstream process for all cases from 1 to 8.
- the accumulation here refers to the cumulative value of profit and the cumulative value of loss calculated by sequentially incrementing i from one to one.
- the calculation of the profit is based on the multi-surface sampling in which the number of virtual single surfaces where the defects are present is calculated from the unit price per multi-surface glass substrate in the upstream process and the lot average defect density, and the number of virtual single surfaces on which the defects exist is the allowable number of surfaces. It is obtained from the yield of the glass substrate 1.
- the loss is calculated from the unit price per single-sided glass plate 3 and lot average defect density when product-related processing is performed on the multi-sided glass substrate in the downstream process and divided into multiple single-sided glass plates.
- the yield corresponding to the above-mentioned allowable number of faces is determined from the yield that is sent to the downstream process and included in the single-sided glass plate 3 to become defective. In each case, to obtain the yield from the lot average defect density, it may be obtained probabilistically by an equation using a binomial cumulative distribution function.
- step S4 if the accumulated profit exceeds the accumulated loss, the process proceeds to step S5. If not, the process proceeds to step S7.
- step S5 if i is the largest accumulated profit compared to the previous trial calculation results in a series of trial calculations in which i is incremented one by one, the process proceeds to step S6 and compared with the previous trial calculation results. If it is not the maximum accumulated profit, the process proceeds to step S8.
- step S6 the value of i at that time is set as a temporary allowable number of faces (appropriate number of virtual single faces having defects), and the process proceeds to step S7.
- step S7 it is determined whether i at that time has reached the number of virtual single surfaces (in the present embodiment, the number of 8 surfaces) configured in one multi-sided glass substrate. Proceed to step S8, and if not reached, return to step S2. In step S8, the provisional allowable number of faces at that time is set as the final allowable number of faces (true allowable number of faces), and the process proceeds to step S9.
- Step S9 corresponds to the second inspection means C, but here, with respect to the total number of the multi-sided glass substrates 1 of one lot, there is a defect on the basis of the virtual lines that divide each virtual single surface.
- the actual number of virtual single planes is counted, and the process proceeds to step S10.
- Step S10 corresponds to the pass / fail judgment means D.
- the non-defective product and the defective product are determined from the actual number of virtual single surfaces in which defects are present in the multi-sided glass substrate 1 and the true allowable number of surfaces. Select.
- Completion of the above operation reveals whether the defect has only one virtual single surface 2 as a non-defective product, or whether it has two or three defects as a non-defective product. Then, 100% inspection is selected based on the result.
- the above-mentioned profits and losses are obtained as shown in FIGS. 3a, 3b, and 3c.
- the product-related processing is performed on the multi-sided glass substrate 1 having no defects, eight single sides are obtained.
- the glass plate 3 is divided, there is no profit and loss due to defects on the upstream side and the downstream side, so the profit and loss in the present invention are zero.
- the price equivalent of all the multi-sided glass substrates 1 that are determined to be defective will be lost. Then, since it was regarded as a loss, in the present invention for comparing with the conventional system, the profit is determined assuming that the loss is zero in such a case.
- one defect 4 exists in one virtual single side 2, and in the multi-sided glass substrate 1 shown in FIG. One defect 4 is present on each single face 2, and one defect 4 is present on each of the three virtual single faces 2 in the multi-faced glass substrate 1 shown in FIG. 6a, as shown in FIG. 7a. It is assumed that the single-sided glass substrate 1 has one defect 4 on each of the four virtual single surfaces 2.
- the first inspection means A simply detects the total number of defects 4 (10 in this example), and divides this total number by the total area of the multi-faced glass substrate 1 for four sheets. The lot average defect density is calculated. Then, in the process of trial calculation by the trial calculation means B based on this lot average defect density, as shown in FIG. 4a, the multi-sided glass substrate 1 is a non-defective product before the product-related processing is performed. Comparing the profit obtained by considering the loss with the loss caused by discarding one single-sided glass plate 3 as shown in FIG. 4c after performing product-related processing as shown in FIG. 4b However, when the profit exceeds the loss, the multi-sided glass substrate 1 is sent as a non-defective product from the upstream process to the downstream process.
- the loss generated by discarding the single-sided glass plate 3 is compared, and it is determined whether or not the profit exceeds the loss.
- the number of glass substrates is 1, 2, or 3
- the multi-sided glass substrate 1 in the previous stage where the product-related processing is performed is sent from the upstream process to the downstream process. In the case of more than one, the multi-sided glass substrate 1 in the previous stage where the product-related processing is performed is discarded in the upstream process.
- the harmless area relief rate ( ⁇ ) used in this calculation means that there is a defect that becomes defective in the upstream process from design information such as a circuit pattern formed on the glass substrate in the downstream process, for example.
- design information such as a circuit pattern formed on the glass substrate in the downstream process, for example.
- the area ratio is replaced as a probability from the design information of the circuit pattern.
- the accumulated profit is the maximum (96 yen), so in one lot of multi-sided glass substrate 1 there is a single virtual single side where a defect exists, but there is no defect at all. It is sent from the upstream process to the downstream process together with what is not.
- ⁇ is 0% and Cbs is 10,000 yen
- the accumulated profit is all zero or less, so in the multi-surface glass substrate 1 of one lot, only the one having no defects is upstream. It is sent from the process to the downstream process.
- the harmless area relief rate ( ⁇ ) will be described in detail.
- the circuit pattern Pa when it is planned that a plurality of linear circuit patterns Pa (regions with rough cross-hatching) are arranged in parallel on the multi-sided glass substrate 1, the circuit pattern Pa If there is a defect or a defect exists in a region Ba (region with fine cross-hatching) where the circuit pattern Pa is close, a disconnection or a short circuit may occur. Therefore, the region composed of Pa and Ba is defined as a harmful region where the existence of defects is not allowed, and the other region Ca (region hatched with parallel diagonal lines) is defined as a harmless region.
- a value obtained by dividing the area of Ca by the area of the entire area (effective area) of the multi-sided glass substrate 1 is defined as a harmless area relief rate ( ⁇ ).
- the defect information is transmitted from the processor in the upstream process to the processor in the downstream process. This is advantageous in terms of equipment, inventory management, production planning, and the like, and allows actual operations to be easily performed. Further, in the defect inspection, it is only necessary to detect the total number of defects for obtaining the lot average defect density and the number of virtual single planes 2 on which the defects 4 for the multi-sided glass substrate 1 are present. This eliminates the need for careful inspection of defects, and the defect inspection work is greatly simplified, thereby improving the work efficiency.
- the multi-sided glass substrate 1 is configured to determine whether it is a non-defective product or a defective product. Defects such as only the processor or only the processor of the downstream process suffering an undue loss will not occur.
- the processor in the upstream process is a manufacturer of mother glass as a multi-sided glass substrate for flat panel displays, and the processor in the downstream process is an intermediate or final manufacturer of flat panel display panels.
- the processor of the upstream process is a manufacturer of mother glass as a multi-sided glass substrate for flat panel displays, and the processor of the downstream process cuts from the mother glass of the flat panel display. Or a manufacturer who processes the glass into a single-sided glass plate.
- the first detection means A, the trial calculation means B, the second inspection means C, and the non-defective product determination means D in the above embodiment may be performed continuously almost simultaneously. That is, an optical automatic defect detection apparatus in which an inspection object flows continuously is used.
- a single inspection means A1 inspects with both purposes.
- the non-defective product determination means C1 is immediately performed based on the result, and finally the inspection object is selected.
- the detection of the lot average defect density by the detection means A1 may use a moving average according to the input of 10 or more consecutive inspection objects.
- the second inspection means C compares the function of inspecting the total number of the multi-sided glass substrates 1 of one lot with the virtual lines that define each virtual single side 2 of the multi-sided glass substrate 1 while checking the defects.
- the latter function is replaced with the expression “calculation” instead of the expression “count”, and is included in the trial calculation means B1 instead of the inspection means A1, and is executed at the end of the trial calculation means B1. Also good. In such a case, it is possible to select a more preferable size and arrangement of the virtual single plane according to the result of the lot average defect density.
- the plurality of virtual single surfaces configured in one multi-sided glass substrate are basically the same size, but may be different sizes.
- the present invention is applied as the glass substrate production management system S.
- the first inspection step A2, the trial calculation step B2, 2 inspection process C2 and pass / fail judgment process D2 may be provided, and as shown in FIG. 11, similarly as glass substrate production management method S3, single inspection process A3, trial calculation process B3, and pass / fail judgment You may make it provide the process C3.
- the inspection process C3 has a function of inspecting the entire number of the multi-sided glass substrate 1 of one lot and the virtual single side 2 of the multi-sided glass substrate 1 in a virtual manner.
- the binomial cumulative distribution function is used to calculate the allowance between the profit received by the processor in the upstream process and the loss received by the processor in the downstream process.
- the distribution is adopted on the premise that the distribution is binomial, and other distribution functions corresponding to the premise may be used.
- the present invention is not limited to such a calculation method, as long as it is a method capable of calculating the profit received by the processor of the upstream process and the loss received by the processor of the downstream process, Other calculation techniques may be used.
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Abstract
Description
2 仮想単面
3 単面ガラス板
4 欠陥
A 第1検査手段
B 試算手段
C 第2検査手段
S ガラス基板生産管理システム
A1 検査手段
B1 試算手段
C1 良否判定手段
A2 第1検査工程
B2 試算工程
C2 第2検査工程
D2 良否判定工程
S2 ガラス基板生産管理方法
A3 検査工程
B3 試算工程
C3 良否判定工程
S3 ガラス基板生産管理方法
Claims (14)
- 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理システムであって、
上流側工程で一ロットの多面採りガラス基板について、欠陥に関する欠陥データを作成すると共に、
上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記多面採りガラスにおける欠陥が存在している仮想単面の個数に基づいて算出し、
前記利益と前記損失との比較結果に基づいて、個々の多面採りガラス基板を上流側工程から下流側工程に送るか否かを判定するように構成したことを特徴とするガラス基板生産管理システム。 - 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理システムであって、
上流側工程で10枚以上の一ロットの多面採りガラス基板から、10枚以上の多面採りガラス基板を抜き取って欠陥検査をして得られた欠陥データに基づいて、その抜き取られた多面採りガラス基板に存在している欠陥の総個数を検出し、その欠陥の総個数を検査対象とした多面採りガラス基板の面の総面積で除したロット平均欠陥密度を算出する第1検査手段と、
上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を予備的に良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの予備的に良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記ロット平均欠陥密度を使用して、前記欠陥が存在している仮想単面の個数を異ならせて複数回に亘って試算し、それらの試算結果に基づいて、前記利益が前記損失を上回っている場合に、前記欠陥が存在している仮想単面を欠陥が存在していないものと見做す仮想単面が一枚の多面採りガラス基板に何個あるかを示す許容面数を算出する試算手段と、
上流側工程における前記一ロットの多面採りガラス基板の全数を欠陥検査して前記欠陥が存在している仮想単面の実個数を計数する第2検査手段と、
前記欠陥が存在している仮想単面の実個数が前記試算手段で算出された許容面数の範囲内にある多面採りガラス基板を、欠陥が全く存在していない多面採りガラス基板に加えて下流側工程に送る良品とし、その他の多面採りガラス基板を、上流側工程で廃棄する不良品とする良否判定手段と、
を備えたことを特徴とするガラス基板生産管理システム。 - 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理システムであって、
上流側工程で10枚以上の一ロットの多面採りガラス基板から、10枚以上の多面採りガラス基板を抜き取って欠陥検査をして得られた欠陥データに基づいて、その抜き取られた多面採りガラス基板に存在している欠陥の総個数を検出し、その欠陥の総個数を検査対象とした多面採りガラス基板の面の総面積で除したロット平均欠陥密度を算出すると共に、前記一ロットの多面採りガラス基板の全数を欠陥検査して前記欠陥が存在している仮想単面の実個数を計数する検査手段と、
上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を予備的に良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの予備的に良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記ロット平均欠陥密度を使用して、前記欠陥が存在している仮想単面の個数を異ならせて複数回に亘って試算し、それらの試算結果に基づいて、前記利益が前記損失を上回っている場合に、前記欠陥が存在している仮想単面を欠陥が存在していないものと見做す仮想単面が一枚の多面採りガラス基板に何個あるかを示す許容面数を算出する試算手段と、
前記検査手段により計数された欠陥が存在している仮想単面の実個数が、前記試算手段で算出された許容面数の範囲内にある多面採りガラス基板を、欠陥が全く存在していない多面採りガラス基板に加えて下流側工程に送る良品とし、その他の多面採りガラス基板を、上流側工程で廃棄する不良品とする良否判定手段と、
を備えたことを特徴とするガラス基板生産管理システム。 - 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理システムであって、
上流側工程で10枚以上の一ロットの多面採りガラス基板から、10枚以上の多面採りガラス基板を抜き取って欠陥検査をして得られた欠陥データに基づいて、その抜き取られた多面採りガラス基板に存在している欠陥の総個数を検出し、その欠陥の総個数を検査対象とした多面採りガラス基板の面の総面積で除したロット平均欠陥密度を算出すると共に、前記一ロットの多面採りガラス基板の全数を欠陥検査して前記欠陥が存在している仮想単面の実個数を計数する検査手段と、
前記仮想単面のサイズと配置とを仮に決定した上で、上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を予備的に良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの予備的に良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記ロット平均欠陥密度を使用して、前記欠陥が存在している仮想単面の個数を異ならせて、更には必要に応じて前記仮に決定した仮想単面のサイズと配置とを異ならせて、複数回に亘って試算し、それらの試算結果に基づいて、前記利益が前記損失を上回っている場合に、前記仮に決定した仮想単面のサイズと配置とを本決定した上で、前記欠陥が存在している仮想単面を欠陥が存在していないものと見做す仮想単面が一枚の多面採りガラス基板に何個あるかを示す許容面数を算出すると共に、前記検査手段で得られた欠陥データを利用して、前記欠陥が存在している仮想単面の実個数を多面採りガラス基板毎に算出する試算手段と、
前記検査手段により計数された欠陥が存在している仮想単面の実個数が、前記試算手段で算出された許容面数の範囲内にある多面採りガラス基板を、欠陥が全く存在していない多面採りガラス基板に加えて下流側工程に送る良品とし、その他の多面採りガラス基板を、上流側工程で廃棄する不良品とする良否判定手段と、
を備えたことを特徴とするガラス基板生産管理システム。 - 下流側工程で製品関連処理が施される多面採りガラス基板の面を、欠陥が製品関連処理に対して有害となる有害領域と、欠陥が製品関連処理に対して無害となる無害領域とに区分して、無害領域の面積を多面採りガラス基板の面積で除した値を無害領域救済率とし、この無害領域救済率を、前記試算手段で行われる計算に使用することを特徴とする請求項2~4の何れかに記載のガラス基板生産管理システム。
- 前記上流側工程の処理者が、フラットパネルディスプレイ用の多面採りガラス基板としてのマザーガラスの製造者であり、前記下流側工程の処理者が、フラットパネルディスプレイのパネルの中間または最終製造者であることを特徴とする請求項1~5の何れかに記載のガラス基板生産管理システム。
- 前記上流側工程の処理者が、フラットパネルディスプレイ用の多面採りガラス基板としてのマザーガラスの製造者であり、前記下流側工程の処理者が、フラットパネルディスプレイのマザーガラスから切断して単面ガラス板に加工する製造者であることを特徴とする請求項1~5の何れかに記載のガラス基板生産管理システム。
- 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理方法であって、
上流側工程で一ロットの多面採りガラス基板について、欠陥に関する欠陥データを作成すると共に、
上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記多面採りガラスにおける欠陥が存在している仮想単面の個数に基づいて算出し、
前記利益と前記損失との比較結果に基づいて、個々の多面採りガラス基板を上流側工程から下流側工程に送るか否かを判定することを特徴とするガラス基板生産管理方法。 - 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理方法であって、
上流側工程で10枚以上の一ロットの多面採りガラス基板から、10枚以上の多面採りガラス基板を抜き取って欠陥検査をして得られた欠陥データに基づいて、その抜き取られた多面採りガラス基板に存在している欠陥の総個数を検出し、その欠陥の総個数を検査対象とした多面採りガラス基板の面の総面積で除したロット平均欠陥密度を算出する第1検査工程と、
上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を予備的に良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの予備的に良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記ロット平均欠陥密度を使用して、前記欠陥が存在している仮想単面の個数を異ならせて複数回に亘って試算し、それらの試算結果に基づいて、前記利益が前記損失を上回っている場合に、前記欠陥が存在している仮想単面を欠陥が存在していないものと見做す仮想単面が一枚の多面採りガラス基板に何個あるかを示す許容面数を算出する試算工程と、
上流側工程における前記一ロットの多面採りガラス基板の全数を欠陥検査して前記欠陥が存在している仮想単面の実個数を計数する第2検査工程と、
前記欠陥が存在している仮想単面の実個数が前記試算手段で算出された許容面数の範囲内にある多面採りガラス基板を、欠陥が全く存在していない多面採りガラス基板に加えて下流側工程に送る良品とし、その他の多面採りガラス基板を、上流側工程で廃棄する不良品とする良否判定工程と、
を備えたことを特徴とするガラス基板生産管理方法。 - 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理方法であって、
上流側工程で10枚以上の一ロットの多面採りガラス基板から、10枚以上の多面採りガラス基板を抜き取って欠陥検査をして得られた欠陥データに基づいて、その抜き取られた多面採りガラス基板に存在している欠陥の総個数を検出し、その欠陥の総個数を検査対象とした多面採りガラス基板の面の総面積で除したロット平均欠陥密度を算出すると共に、前記一ロットの多面採りガラス基板の全数を欠陥検査して前記欠陥が存在している仮想単面の実個数を計数する検査工程と、
上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を予備的に良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの予備的に良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記ロット平均欠陥密度を使用して、前記欠陥が存在している仮想単面の個数を異ならせて複数回に亘って試算し、それらの試算結果に基づいて、前記利益が前記損失を上回っている場合に、前記欠陥が存在している仮想単面を欠陥が存在していないものと見做す仮想単面が一枚の多面採りガラス基板に何個あるかを示す許容面数を算出する試算工程と、
前記検査工程で計数された欠陥が存在している仮想単面の実個数が、前記試算手段で算出された許容面数の範囲内にある多面採りガラス基板を、欠陥が全く存在していない多面採りガラス基板に加えて下流側工程に送る良品とし、その他の多面採りガラス基板を、上流側工程で廃棄する不良品とする良否判定工程と、
を備えたことを特徴とするガラス基板生産管理方法。 - 上流側工程で作製された多面採りガラス基板を、下流側工程で製品関連処理を施して複数の単面ガラス板に分割する手順を含むガラス基板生産管理方法であって、
上流側工程で10枚以上の一ロットの多面採りガラス基板から、10枚以上の多面採りガラス基板を抜き取って欠陥検査をして得られた欠陥データに基づいて、その抜き取られた多面採りガラス基板に存在している欠陥の総個数を検出し、その欠陥の総個数を検査対象とした多面採りガラス基板の面の総面積で除したロット平均欠陥密度を算出すると共に、前記一ロットの多面採りガラス基板の全数を欠陥検査して前記欠陥が存在している仮想単面の実個数を計数する検査工程と、
前記仮想単面のサイズと配置とを仮に決定した上で、上流側工程における前記一ロットの多面採りガラス基板について、欠陥が存在している多面採りガラス基板を予備的に良品とみなして下流側工程に送ることによる上流側工程の処理者が受ける利益と、それらの予備的に良品とみなされた多面採りガラス基板に製品関連処理を施して複数の単面ガラス板に分割した場合に前記欠陥の存在に起因して不良品が発生したことによる下流側工程の処理者が受ける損失とを、前記ロット平均欠陥密度を使用して、前記欠陥が存在している仮想単面の個数を異ならせて、更には必要に応じて前記仮に決定した仮想単面のサイズと配置とを異ならせて、複数回に亘って試算し、それらの試算結果に基づいて、前記利益が前記損失を上回っている場合に、前記仮に決定した仮想単面のサイズと配置とを本決定した上で、前記欠陥が存在している仮想単面を欠陥が存在していないものと見做す仮想単面が一枚の多面採りガラス基板に何個あるかを示す許容面数を算出すると共に、前記検査工程で得られた欠陥データを利用して、前記欠陥が存在している仮想単面の実個数を多面採りガラス基板毎に算出する試算工程と、
前記検査工程で計数された欠陥が存在している仮想単面の実個数が、前記試算手段で算出された許容面数の範囲内にある多面採りガラス基板を、欠陥が全く存在していない多面採りガラス基板に加えて下流側工程に送る良品とし、その他の多面採りガラス基板を、上流側工程で廃棄する不良品とする良否判定工程と、
を備えたことを特徴とするガラス基板生産管理方法。 - 下流側工程で製品関連処理が施される多面採りガラス基板の面を、欠陥が製品関連処理に対して有害となる有害領域と、欠陥が製品関連処理に対して無害となる無害領域とに区分して、無害領域の面積を多面採りガラス基板の面積で除した値を無害領域救済率とし、この無害領域救済率を、前記試算工程で行われる計算に使用することを特徴とする請求項9~11の何れかに記載のガラス基板生産管理方法。
- 前記上流側工程の処理者が、フラットパネルディスプレイ用の多面採りガラス基板としてのマザーガラスの製造者であり、前記下流側工程の処理者が、フラットパネルディスプレイのパネルの中間または最終製造者であることを特徴とする請求項8~12の何れかに記載のガラス基板生産管理方法。
- 前記上流側工程の処理者が、フラットパネルディスプレイ用の多面採りガラス基板としてのマザーガラスの製造者であり、前記下流側工程の処理者が、フラットパネルディスプレイのマザーガラスから切断して単面ガラス板に加工する製造者であることを特徴とする請求項8~12の何れかに記載のガラス基板生産管理方法。
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WO2015029847A1 (ja) * | 2013-08-27 | 2015-03-05 | 日本電気硝子株式会社 | ガラス基板生産管理システム及びガラス基板生産管理方法 |
JP2018100199A (ja) * | 2016-12-20 | 2018-06-28 | 日本電気硝子株式会社 | ガラス基板の製造方法 |
WO2018123406A1 (ja) * | 2016-12-26 | 2018-07-05 | 日本電気硝子株式会社 | ガラス板の製造方法 |
JP2021011394A (ja) * | 2019-07-03 | 2021-02-04 | 日本電気硝子株式会社 | 割断装置及びガラス板の製造方法 |
JP7415235B2 (ja) | 2017-08-10 | 2024-01-17 | Agc株式会社 | Tft用ガラス基板 |
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CN106908449B (zh) * | 2017-02-17 | 2019-09-06 | 福州东旭光电科技有限公司 | 一种通过测量液晶玻璃板缺陷深度寻找产生缺陷的工段的方法 |
CN107421959A (zh) * | 2017-07-25 | 2017-12-01 | 昆山国显光电有限公司 | 缺陷像素检测方法和装置、计算机设备和机器可读存储介质 |
CN109426013B (zh) * | 2017-08-23 | 2020-06-23 | 京东方科技集团股份有限公司 | 一种彩膜基板缺陷的分析方法、检测修复方法及装置 |
CN108447800B (zh) * | 2018-01-31 | 2019-12-10 | 北京铂阳顶荣光伏科技有限公司 | 薄膜电池的制造方法 |
KR20230022722A (ko) | 2021-08-09 | 2023-02-16 | 현대자동차주식회사 | 시트벨트 무선통신 시스템 및 그 방법 |
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