CN100533657C - Alarming device - Google Patents
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- CN100533657C CN100533657C CNB2007101122646A CN200710112264A CN100533657C CN 100533657 C CN100533657 C CN 100533657C CN B2007101122646 A CNB2007101122646 A CN B2007101122646A CN 200710112264 A CN200710112264 A CN 200710112264A CN 100533657 C CN100533657 C CN 100533657C
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Abstract
The invention provides an alarm apparatus which can automatically detect the factory abnormality based on the inspection result of the product. The factory is provided with a producing apparatus, a detecting apparatus to produce the products by treating the lining. The alarm apparatus compares the defect generating degree in the respective monitoring unit region with the reference based on the inspection result of the lining surface in the production progress to summation defect generating degree in the respective monitoring unit region with a predetermined dimension according to the abnormal category, transmits the alarm when the defect generating degree in the monitoring unit region is higher than the reference and outputs the summation result.
Description
Technical field
The present invention relates to alarm device, particularly relate to supervision, detect the unusual alarm device that produces in this factory by handling the factory that substrate manufactures a product.
Background technology
In the past, generally be the number of defects of each sheet of Utility Engineers's visualization tool investigation product to the unusual supervision that produces in the factory, detect unusually according to number of defects, concentration degree, and report., in such operation, often exist unusual leakage to see.In addition, even detect unusually, can not determine its reason automatically yet.Therefore, even in factory, produce the unusual of some, detect in trend that this is unusual according to the defective of product, and determine reason before, time lag of half a day to a few days is arranged usually, become the very big reason of decrease in yield this time lag.In addition, also exist trend to detect unusual generation, determine that the operation of its reason depends on engineer's sensation or experience, by the problem about engineer individual's ability according to number of defects, concentration degree.
On the other hand, from device (for example, with reference to patent documentation 1) that just to propose with automatic detection defective be purpose in the past.Usually, even during the manufacturing installation operate as normal, also the frequency with certain degree produces defective.And, in manufacturing installation, producing when unusual, the generation of defects degree worsens, but the mode that should worsen is according to unusual kind and various.Therefore, be difficult to detect the unusual of manufacturing installation automatically from the check result of product.
[patent documentation 1] spy opens the 2005-197629 communique
Summary of the invention
The object of the present invention is to provide check result, can detect the unusual alarm device of factory automatically according to product.
According to a mode of the present invention, a kind of alarm device is provided, with the unusual generation in the factory that manufactures a product by the processing substrate is detected, this alarm device is characterised in that: according to the check result of the described substrate surface in the manufacture process of described product, each of the given size set by described each unusual kind monitored that the defective generation degree of unit area adds up to; Generation of defects degree described in each described supervision unit area and benchmark are compared; When detecting described generation of defects degree, send alarm and also export described aggregate result than the also high supervision unit area of described benchmark.
According to the present invention, can obtain check result according to product, can detect the unusual alarm device of factory automatically.
Description of drawings
Following brief description accompanying drawing.
Fig. 1 is that illustration comprises alarm device about embodiments of the present invention, the figure of the gerentocratic quality control system of the factory of the object that monitors as this alarm device, this factory.
Fig. 2 (a) is the stereogram that illustration has produced the substrate of defective, (b) is the figure of the aggregate result of this substrate of illustration.
Fig. 3 is the flow chart of the alarm device of illustration present embodiment.
Fig. 4 is that illustration comprises alarm device about first object lesson, the figure of the gerentocratic quality control system of the factory of the object that monitors as this alarm device, this factory.
Fig. 5 is the figure of the manufacture method of pattern ground illustration liquid crystal panel.
Fig. 6 is the figure of each step of expression array processes.
Fig. 7 is the flow chart of illustration about the action of the alarm device of this object lesson.
Fig. 8 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, get the lengthwise position (X coordinate) of glass substrate at the longitudinal axis, the figure of the aggregate result of illustration defective, expression is cut apart the surf zone of glass substrate vertical 19, cut apart horizontal 15, the situation of each zone after cutting apart as the monitored object zone.
Fig. 9 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, get the lengthwise position (X coordinate) of glass substrate at the longitudinal axis, the figure of the aggregate result of illustration defective, expression is cut apart the surf zone of glass substrate vertical 3, cut apart horizontal 3, the situation of each zone after cutting apart as the monitored object zone.
Figure 10 is the figure of display packing of the tabulation of illustration reason candidate device.
Figure 11 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, gets the lengthwise position (X coordinate) of glass substrate, the figure of the aggregate result of the defective in first variation of illustration first object lesson at the longitudinal axis.
Figure 12 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, gets the lengthwise position (X coordinate) of glass substrate, the figure of the aggregate result of the defective in second variation of illustration first object lesson at the longitudinal axis.
Figure 13 is the position longitudinally (X coordinate) of getting glass substrate in X-axis, gets the lateral attitude (Y coordinate) of glass substrate in Y-axis, gets the degree of defective, the three-dimensional distribution map of the aggregate result of the defective in the 4th variation of illustration first object lesson at the Z axle.
Figure 14 is the figure of the manufacture method of pattern ground illustration semiconductor chip.
Embodiment
Embodiments of the present invention are described with reference to the accompanying drawings.
Fig. 1 is that illustration comprises alarm device about present embodiment, the figure of the gerentocratic quality control system of the factory of the object that monitors as this alarm device, this factory.
In Fig. 1, information flow represents that with solid line the flow process of product dots.
As shown in Figure 1, in quality control system 101, there is the factory 102 that becomes monitored object.Many manufacturing installation 103a～103f (below be generically and collectively referred to as " manufacturing installation 103 "), many testing fixture 104a～104c (below be generically and collectively referred to as " testing fixture 104 ") are set in factory 102.Factory 102 is by handling the factory that substrate manufactures a product by many manufacturing installations 103, for example making products such as liquid crystal panel or semiconductor chip.
It should be noted that, in this manual, " factory " be meant have be mutually related many manufacturing installations and between these manufacturing installations the supply unit of conveying products or semi-finished product etc., and, set the place of one or more production line according to the product that will make.Exist when multiple at the product of making, many production lines also are set sometimes, these many production lines are shared the manufacturing installation of a part in addition.At this moment, many production lines intersect at this manufacturing installation." factory " might not be arranged in the room, can stride a plurality of rooms or land used and exists, and also can only be provided with in a part of zone in a clean room.
The step of the part in the manufacturing step of manufacturing installation 103 enforcement products.In the present embodiment, by each step of many manufacturing installations 103 executed in parallel, in example shown in Figure 1, manufacturing installation 103a implements identical step with 103b, manufacturing installation 103c implements other identical steps with 103d, and manufacturing installation 103e implements other identical steps with 103f.
Testing fixture 104 is in the manufacture process of product and makes the surface that substrate is checked in the back, the testing fixture that the coordinate of the existence of defective on this substrate exported, for example, be the particulate testing fixture that has or not, the inspection apparatus for pattern that detects the quality that is formed on the circuit pattern on the substrate of checking dust, check the electronic circuit that is formed on the substrate normal array detection device whether on electricity.In example shown in Figure 1, factory's 102 layouts are after handling substrate by manufacturing installation 103a or 103b, to be checked by testing fixture 104a, after manufacturing installation 103c or 103d processing, check by testing fixture 104b, after handling by manufacturing installation 103e or 103f, check by testing fixture 104c.
In addition, in quality control system 101, be provided with,, store these database of information 105 from the check result of testing fixture 104 input products from the result of manufacturing installation 103 input products.
And, alarm device 1 is set in quality control system 101.The record information that alarm device 1 is imported information and the coordinate information thereof of about the defect information of product defects, promptly representing the defective on the substrate and represented to handle the manufacturing installation 103 of this product from database 105.Then, alarm device 1 when generation is unusual in factory 102, detects it according to defect information, and manager 106 is sent alarms.In addition, alarm device 1 is inferred to produce unusual manufacturing installation 103 according to record information.Alarm device 1 both can utilize the PC that has existed to be realized by program, also can (Large Scale Integrated circuit: large scale integrated circuit) constitute, the aggregate that also can be used as a plurality of parts of undertaking each function be assembled by a system LSI.
The following describes the action of present embodiment.
Fig. 2 (a) is the stereogram of the substrate of illustration defective generation, (b) is the figure of the aggregate result of this substrate of illustration.
Fig. 3 is the flow chart of illustration about the alarm device of present embodiment.
At first, manager 106 sets the size (pixel size) that monitors unit area by each unusual kind in advance, to alarm device 1 input.The so-called unit area that monitors is the check result that adds up to substrate, becomes the zone of the benchmark when monitoring unusual generation.The optimum size that monitors unit area is according to unusual kind and difference, if as monitored object be generation of static electricity unusually, the supervision unit area wishes to be for example vertical 5 millimeters, the zone of horizontal 5 millimeter.In addition, if as monitored object be from the falling of the dust of the top of substrate unusually, monitor that then it is vertical 300 millimeters, the zone of horizontal 200 millimeter that unit area is for example wished.In view of the above, shown in Fig. 2 (a), on the surface of the substrate 21 of product, 12 monitor that unit area 31a～311 (below be generically and collectively referred to as " monitoring unit area 31 ") are set at the matrix of 4 row, 3 row.
On the other hand, as shown in Figure 1, in factory 102, manufacture a product.After the substrate 21 of product (with reference to Fig. 2 (a)) is handled by manufacturing installation 103a or 103b, check by testing fixture 104a, behind manufacturing installation 103c or 103d processing substrate, check by testing fixture 104b, after handling by manufacturing installation 103e or 103f then, check by testing fixture 104c.At this moment, in process, producing defective 41a～41g (below be generically and collectively referred to as " defective 41 ") on the substrate 21 based on the processing of manufacturing installation 103, this defective 41 by than it more the testing fixture 104 of downstream one side detect.
Then, the result of product is imported into database 105 from each manufacturing installation 103, and the check result of product is imported into database 105 from each testing fixture 104.Then, the information in the database 105 of being stored in is imported into alarm device 1 as the defect information of the existence of representing defective with its coordinate and the record information of resume of expression product.
Shown in the step S1 of Fig. 3, alarm device 1 the check result addition calculation of the substrate 21 of regulation number, monitors that by each unit area 31 adds up to the generation degree of defective 41 according to the defect information of input.Then shown in step S2,, each is monitored that the generation of defects degree of unit area and benchmark compare according to this aggregate result.In view of the above, detect the high supervision unit area of generation of defects degree (below be also referred to as " defective concentrated area ").Particularly, for example each is monitored the quantity and specified reference value comparison of the defective 41 that produces in unit area 31, the supervision unit area 31 that number of defects is Duoed than fiducial value is as the defective concentrated area.
In the example shown in Fig. 2 (a), monitor that the number of defects among the unit area 31g is 3, monitor that the number of defects among the unit area 31f is 2, monitor that the number of defects among unit area 31b and the 31c is 1, the number of defects in the supervision unit area in addition is 0.For example, if fiducial value is 2, then number of defects is that 3 supervision unit area 31g becomes the defective concentrated area.
And, when detecting the generation of defects degree supervision unit area also higher (defective concentrated area), enter step S3 than benchmark, manager 106 is sent alarm, and the output aggregate result.At this moment, shown in Fig. 2 (b), by showing the surface of substrate 21, generate to set the drawing 22 of the coordinate corresponding with coordinate on the substrate 21, represent the diagram 42a～42g (following also be generically and collectively referred to as " diagram 42 ") of defective in the position display of the generation position that is equivalent to the defective 41 on the substrate 21 on the drawing 22, thereby carry out this output.In addition, in drawing 22, set and the corresponding unit of display zone 32a～32l of supervision unit area 31a～31l on the substrate 21, for example use the number of defects of the regional corresponding supervision unit area of numeral (not shown) expression and each unit of display.
Then, enter step S4, according to record information from database 105 inputs, judge whether to exist the manufacturing installation 103 (below be also referred to as " reason candidate device ") of the above substrate of the regulation ratio in the substrate that detects the defective concentrated area handled, when reason candidate device exists, enter step S5, the information of this reason candidate device of expression is exported manager 106.
Then, enter step S6, only in the substrate that detects the defective concentrated area by a substrate of handling in the reason candidate device of extracting out among the step S4, monitor that by each unit area adds up to defect level once again.Carry out this total for whole reason candidate devices.Then, shown in step S7, to manager's 106 these aggregate result of output.Carry out this output equally with step S3.
Then, the effect with regard to present embodiment is illustrated.
In the present embodiment, because each supervision unit area of setting its size according to unusual kind is added up to the generation of defects degree,, can detect reliably so can not miss the variation of the various defectives that cause unusually.
In addition, in the present embodiment, extract the manufacturing installation (reason candidate device) of having handled the substrate more than the regulation ratio in the substrate that detects the defective concentrated area out, its information of output expression.In view of the above, can support the manufacturing installation that the manager determines to become the reason of defective.
And then in the present embodiment, only the substrate that detects the defective concentrated area, promptly the substrate of being handled by reason candidate device monitors that at each unit area adds up to the degree of defective once again as object.In view of the above, can be limited to the unusual kind that produces in the reason candidate device, position etc., more effectively support the reason that the manager determines defective.
In addition, in the present embodiment, the check result of a plurality of substrates of addition calculation adds up to, so can carry out the high detection of reliability.
Like this, according to present embodiment,, can detect the unusual of factory automatically according to the check result of product.
Below, the object lesson that is used for the above-mentioned execution mode of concrete manifestation is described.
At first, first object lesson is described.
Alarm device about this object lesson is the alarm device that monitors the factory that makes liquid crystal panel.
Fig. 4 is that illustration comprises alarm device about this object lesson, the figure of the gerentocratic quality control system of the factory of the object that monitors as this alarm device, this factory.
Fig. 5 is the figure of the manufacture method of pattern ground illustration liquid crystal panel.
Fig. 6 is the figure of each step of expression array processes.
It should be noted that in Fig. 4, information flow represents that with solid line goods batch dots.
As shown in Figure 4, in quality control system 111, there is the factory 112 that becomes monitored object.In factory 112, be provided with many manufacturing installations 103 and Duo Tai testing fixture 104, make liquid crystal panel as product.Testing fixture 104 for example is particulate testing fixture, inspection apparatus for pattern or array detection device etc.
The step of making liquid crystal panel can roughly be divided into array processes and cell process.Promptly as shown in Figure 5, at first on glass substrate 201, form electronic circuit 202 as precursor structures.At this moment, according to the size of the liquid crystal panel that will make, on each glass substrate 201, form a plurality of electronic circuits 202.In example shown in Figure 5, on each glass substrate 201, form 9 electronic circuits 202 with 3 row 3 row rectangularly.Then, glass substrate 201 is cut apart by each electronic circuit 202.In view of the above, make the array substrate (not shown) of liquid crystal panel.Be array processes so far.Then, the liquid crystal (not shown) that drips on each array substrate is pasted opposed substrate and sealing.This is a cell process.Thus, produce liquid crystal panel 203.
Above-mentioned explanation is a summary, but in fact in order to make liquid crystal panel, needs more than 100 step.And, in factory 112 (with reference to Fig. 4), by each step of many manufacturing installations 103 parallel processings.For example as shown in Figure 6, in making the array processes of array substrate, be arranged on the polysilicon process that makes the polysilicon layer growth on the glass substrate, on this polysilicon layer, form the grid technology of grid, this grid as mask and to polysilicon layer doping P
+The doping P of ion
+Ion processes, form interlayer dielectric on the polysilicon layer and on it, form the contact hole technology of contact hole, on interlayer dielectric, form wiring Wiring technique, form the color filter technology of colored filter (COA:Color filter on Array) by each cell columns, each technology is made of several steps respectively.
It should be noted that in Fig. 6, represent that each technology is made of 9 manufacturing steps and 1 inspection step respectively, the inspection step of each technology monitors the manufacturing step that belongs to same process, the example of the inspection of the array substrate of finishing in checking step 61.In addition, in Fig. 4, the manufacturing step 6～9 of an illustration polysilicon process and inspection step 10.For example, (step 6) is by 3 manufacturing installation 103 parallel processings of " #1 "～" #3 " for the 6th step, (step 7) is by 9 manufacturing installation 103 parallel processings of " #1 "～" #9 ", and (step 10) is carried out the inspection of substrate to the 10th step by testing fixture 104a for the 7th step.The pass course of the liquid crystal panel in the factory 112 is pressed each batch and difference.
And, if in a manufacturing installation 103 of a step, produce unusually, will improve by the possibility that produces defective in the product of this manufacturing installation 103.For example, if in the manufacturing installation 103 of the part of the manufacturing step of undertaking electronic circuit 202, produce unusual, produce defective 204 in the electronic circuit 202 that is formed by this manufacturing installation 103, the liquid crystal panel 203 that comprises this defective 204 becomes invalid panel 205.
On the other hand, in quality control system 111, be provided with, and, store these database of information 105 from the check result of testing fixture 104 input products from the result of each manufacturing installation 103 input products.It should be noted that in Fig. 4, for reduced graph, still in fact the arrow of record expression from the manufacturing installation 103 of " #1 " of " step 6 " to the signal flow of database 105 only, be that the result with whole manufacturing installations 103 is input to database 105.
And, in quality control system 111, be provided with in the input database 105 data of storage, produces in factory 112 according to these data and detect it when unusual, and to the alarm device 11 of manager's 106 transmission alarms.From the data of 105 pairs of alarm devices of database 11 input, comprise defect information that is illustrated in the coordinate on the detected defective and this glass substrate 201 in each testing fixture 104 and the record information of representing the manufacturing installation 103 relevant with the manufacturing of this product.
For example utilize the PC that has existed, utilize and realize alarm device 11 on the program software.It should be noted that alarm device 11 also can be made of on hardware a system LSI, the aggregate that perhaps also can be used as a plurality of parts of undertaking each function is assembled.
In addition, alarm device 11 and manager 106 are connected by electric network.For example (Local AreaNetwork: local area network (LAN)) 107 are connected the terminal installation (not shown) of manager's 106 uses by LAN with alarm device 11.In view of the above, manager 106 can carry out various settings to alarm device 11 by LAN107.In addition, alarm device 11 can be by LAN107 to manager's 106 notice alarms and wherein subsidiary various information.
The following describes action about the alarm device of this object lesson.
Fig. 7 is the flow chart of illustration about the action of the alarm device of this object lesson.
Fig. 8 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, get the position longitudinally (X coordinate) of glass substrate at the longitudinal axis, the figure of the aggregate result of illustration defective, expression is cut apart the surf zone of glass substrate vertical 19, cut apart horizontal 15, the situation of each zone after cutting apart as the monitored object zone.
Fig. 9 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, get the position longitudinally (X coordinate) of glass substrate at the longitudinal axis, the figure of the aggregate result of illustration defective, expression is cut apart the surf zone of glass substrate vertical 3, cut apart horizontal 3, the situation of each zone after cutting apart as the monitored object zone.
Figure 10 is the figure of display packing of the tabulation of illustration reason candidate device.
As shown in Figure 4, make manufacturing installation 103 work of factory 112, make liquid crystal panel.Promptly as shown in Figure 5, after forming a plurality of electronic circuits 202 on each glass substrate 201, glass substrate 201 is cut apart by each electronic circuit 202, be encapsulated into liquid crystal and make liquid crystal panel 203.Then, in each technology in this manufacture process,, detect defective 204 by the surface of testing fixture 104 inspection glass substrate 201.At this moment, from 103 pairs of databases of each manufacturing installation, 105 output results, from 104 pairs of databases of testing fixture, 105 outgoing inspection results.
Under this state, carry out the supervision of factory 112.At first, shown in the step S11 of Fig. 7, alarm device 11 is set the size (pixel size) with each corresponding unusually supervision unit area.The size of this supervision unit area is determined by rule of thumb by manager's 106 grades, by LAN107 alarm device 11 is imported in advance.If for example as monitored object be the generation of static unusually, monitor that unit area is made as smaller zone, in an example, be made as vertical 5 millimeters, horizontal 5 millimeters foursquare zone.In addition, if as monitored object be from the falling of the dust of the top of substrate unusually, monitor that unit area is made as bigger zone, in an example, be made as vertical 300 millimeters, horizontal 200 millimeters rectangular zone.In addition, about monitor unusual during, the number of the substrate that adds up to, each fiducial value etc. all are input to alarm device 11 in advance.
Then, shown in step S12, the result of the glass substrate 201 (with reference to Fig. 5) of number is stipulated in inspection according to testing fixture 104 (with reference to Fig. 4), and alarm device 11 monitors that at each unit area adds up to number of defects.Particularly, as Fig. 8 and shown in Figure 9, in the orthogonal coordinates of setting two dimension as the surface of the glass substrate 201 (with reference to Fig. 5) of checking object, generate to set the figure of the coordinate corresponding, charge to the diagram 42 corresponding in the figure with detected defective in the glass substrate of regulation number with coordinate on this glass substrate.Promptly the coordinate of the diagram among the figure 42 equals the coordinate on glass substrate of the defective of this diagram expression.
Then,, the surf zone of the glass substrate that the figure shows is divided into and the unit of display zone 32 that monitors that unit area is corresponding, in each unit of display zone, shows the numeral of expression number of defects as Fig. 8 and shown in Figure 9.This number of defects becomes the information that expression respectively monitors the defect level in the unit area.In Fig. 8, the surf zone of expression glass substrate is cut apart vertical 19, and cuts apart horizontal 15, the situation of each zone after cutting apart as the supervision unit area.In addition, Fig. 9 represents the surf zone of glass substrate is cut apart vertical 3, cuts apart horizontal 3, the situation of each zone after cutting apart as the monitored object zone.At this moment, in numeral at unit of display zone 32 each demonstration expression number of defects corresponding with monitoring unit area.It should be noted that the information of the degree of expression defective is not limited to number of defects, also can represent this grade to the grading of defective.
Then shown in step S13, judge that whether having the degree that monitors defective in the unit area is the defective concentrated area than the also high supervision unit area of stipulating of benchmark.Particularly, when representing the degree of defective with number of defects, number of defects than the also high supervision unit area of predefined stated number as the defective concentrated area.Then, enter step S14 when detecting the defective concentrated area, enter step S19 when not detecting.
In step S14, alarm device 11 sends alarm by LAN107 to manager 106.At this moment, with alarm with the aggregate result of unusual kind, Fig. 8 or defective shown in Figure 9 together to manager's 106 outputs.For example notify alarm by Email to 106 of managers, attached information such as unusual kind and aggregate result are published on the website.For example, on the website, publish Fig. 8 or figure shown in Figure 9 about aggregate result.In view of the above, manager 106 by with reference to above-mentioned website, can obtain necessary information after identifying generation unusually by Email.It should be noted that outputs such as the transmission of the alarm shown in the step S14 and aggregate result also can be carried out simultaneously with the output shown in the step S18 that describes later.
Then shown in step S15, according to from the record information of database 105 (with reference to Fig. 4) input, promptly represent the information that certain product by which manufacturing installation 103 is handled, to each manufacturing installation 103 calculation element common point.So-called " device is concomitant " is illustrated in the ratio of the glass substrate of being handled by this manufacturing installation 103 in the glass substrate that detects the defective concentrated area.Be A (individual) promptly in the number of establishing the glass substrate that detects the defective concentrated area, when the number that detects the glass substrate of being handled by this manufacturing installation 103 in the glass substrate (A) of this defective concentrated area was B (individual), the concomitant X of the device of certain manufacturing installation (%) was defined by following mathematical expression (1).
X(％)＝B/A×100 (1)
Then, shown in step S16, judge that whether having the concomitant manufacturing installation 103 that surpasses specified reference value of device in each manufacturing installation 103 (with reference to Fig. 4) is reason candidate device.In view of the above, extract reason candidate device out.Then, when having extracted reason candidate device out, enter step S17, when not extracting out, enter step S19.
In step S17,, monitor that at each unit area adds up to number of defects once again about in the glass substrate that detects the defective concentrated area, by the handled glass substrate of a table apparatus in the reason candidate device of extracting out among the step S16.In view of the above, which position is the glass substrate of being handled by this reason candidate device can clear and definite defective concentrate on.Whole reason candidate devices are implemented this to be added up to again.
Then enter step S18, alarm device 11 is by the result that again add up to of LAN107 to calculating among the tabulation of the reason candidate device extracted out among the manager 106 output step S16, the step S17.For example by on the website, publishing Fig. 8 or figure shown in Figure 9, the result's who adds up to again output.In addition, for example by on the website, publishing the tabulation of reason candidate device shown in Figure 10, the tabulation of exporting reason candidate device.In Figure 10, show the inspection step that detects the defective concentrated area, the degree (defect rank) of this defective, the common point that is speculated as the unusual step (reason step) of generation and installs (reason candidate device), this reason candidate device.In addition, in the display frame of website, manager 106 is by clicking the button area of " adding up to figure " shown in Figure 10, displayed map 8 or figure shown in Figure 9.After carrying out this output, enter step S19.
Then, shown in step S19, if unusual about as all categories of analytic target, analyze to finish, then finish the action of alarm device 11, if the unusual of the kind also analyzed arranged, just get back to step S11, monitor the setting again of unit area, continue to analyze.It should be noted that unusual about all categories analyzed when finishing, and also gets back to step S11, repeats above-mentioned a series of actions.At this moment, alarm device 11 is an edge work always, on one side the replicate analysis check result, identifying when unusual, just to manager's 106 transmission alarms.
The following describes the effect of this object lesson.
In this object lesson, in the step shown in the step S12 of Fig. 7,, set and be suitable for this unusual supervision unit area at unusual each of the reason that becomes defective, each adds up to number of defects to monitor unit area at this, concentrates so can detect the various defectives that cause unusually.For example can detect reliably the engineer only by the check result of observing defective unconcernedly note less than the defective defective concentrating, can't detect with the testing fixture of simple instrumentation number of defects concentrated.
In addition, according to this object lesson,, produce unusual manufacturing installation (reason candidate device) so can extract out to be estimated as owing in the step shown in the step S15,, calculate the device common point of each manufacturing installation for the glass substrate that detects the defective concentrated area.In view of the above, can support the manufacturing installation that the manager determines to become defect cause.
Further, in this object lesson, in the step shown in the step S17, about in the glass substrate that detects the defective concentrated area, by the glass substrate of each reason candidate device, each adds up to number of defects again at monitoring unit area.In view of the above, which position that can be identified in glass substrate by this reason candidate device produces defective, and supporting the manager, that what kind of determines to produce in this reason candidate device is unusual.
In addition, in this object lesson,, be mapped on the figure that sets the coordinate corresponding by the result that will add up to and show with coordinate on the glass substrate as Fig. 8 and shown in Figure 9.In view of the above, the manager can discern the collected state of the defective on the glass substrate intuitively.In addition, relation and all generation of defects of glass substrate that also can discern easily between the adjacent supervision unit area is inclined to.
In addition, according to this object lesson, in step S12 and S17, because the check result of a plurality of glass substrate of addition calculation adds up to number of defects, so can disperse less, analysis that stability is high.
In addition, in this object lesson, when generation is unusual, the direct send Email of manager is notified, in the website, published about attached information in the alarm by alarm self.In view of the above, the manager can be reliably and is promptly discerned unusual generation, and about attached information in the alarm, works hard by structure of web page and layout to the website, can efficiently obtain necessary information.
According to this object lesson, can shorten after factory, producing unusually like this, should be unusual to detecting, determine to become the manufacturing installation of reason, and the time that takes some countermeasures.Can realize unusual early detection and early stage reply, suppress the decline of rate of finished products.In addition, about the defective that produces chronically, can determine its reason one by one and break up it.In view of the above, can improve the baseline of the rate of finished products of factory.
It should be noted that, in this object lesson, monitor that the size of unit area is determined by rule of thumb by the manager, and the input alarm device.This is based on following reason.Even detect defective in the general product in manufacturing process, this product also not necessarily becomes invalid product after finishing.Therefore, only, carry out unusual judgement, can't effectively improve rate of finished products by the number of defects of the product in the instrumentation manufacture process merely.In addition, the existence that is unprofitable to the defective of rate of finished products like this becomes noise, is difficult to detect the significant deficiency of the reason that becomes invalid product., knowing on the experience in manufacture process, producing defective, will produce invalid product in a large number if in the zone of certain size of substrate, concentrate.Therefore, in this object lesson, actively utilize the knowledge of this experience, can effectively improve the rate of finished products of factory.
The following describes first variation of this object lesson.
Figure 11 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, gets the lengthwise position (X coordinate) of glass substrate, the figure of the aggregate result of the defective in this variation of illustration at the longitudinal axis.Figure 11 represents the result identical with check result shown in Figure 9.
As Fig. 8 and shown in Figure 9, in described first object lesson, when the manager is exported aggregate result, represent each defective with diagram, each monitors the number of defects of unit area with numeral.Relative therewith, in this variation, as shown in figure 11, when the output aggregate result, the generation of defects grading in each supervision unit area, represent each grade by mark of all kinds according to number of defects.It should be noted that, in Figure 11, for convenience's sake, utilize rectangle (), at the mark of the internal record cross spider (*) of rectangle () or smear part or all mark of the inside of rectangle (), represent mark of all kinds.
For example, to monitor unit area each, the degree of defective is categorized as 6 grades, the supervision unit area the highest to the intensity grade of defective, it is the red mark of configuration in the many supervision unit areas of number of defects, to the yellow mark of configuration in the high supervision unit area of the intensity grade second of defective, to the green mark of configuration in the high supervision unit area of the intensity grade the 3rd of defective, to configuration mark azury in the high supervision unit area of grade the 4th, to the navy blue mark of configuration in the high supervision unit area of grade the 5th, in the supervision unit area that does not produce defective configuration flag not.In view of the above, the manager can visually hold the collected state of defective.Above-mentioned structure, action and the effect in addition of this variation is identical with described first object lesson.
The following describes second variation of this object lesson.
Figure 12 is the lateral attitude (Y coordinate) of getting glass substrate at transverse axis, gets the lengthwise position (X coordinate) of glass substrate, the figure of the aggregate result of the defective in this variation of illustration at the longitudinal axis.Figure 12 represents and Fig. 9 and the identical result of check result shown in Figure 11.
As shown in figure 12, in this variation, when in described first object lesson, representing the aggregate result of defective, do not represent the aggregate result of whole supervision unit areas, only represent the defective concentrated area by mark.Promptly in the display frame of aggregate result, only to the red mark R of defective concentrated area configuration, in addition supervision unit area configuration flag not.In view of the above, can emphasize the display defect concentrated area, the collected state that the manager can easier assurance defective.Above-mentioned structure, action and effect in addition in this variation is identical with first variation of described first object lesson.
The following describes the 3rd variation of this object lesson.
In this variation, when in first variation of described first object lesson, representing the aggregate result of defective, the aggregate result of a plurality of supervision unit areas that dispose is continuously gathered expression as a result.Unit of display zone when being about to show aggregate result is made as than monitoring the big zone of unit area.In view of the above, the manager observes aggregate result easily, can hold the tendency of integral body of the collected state of defective easily.This variation is monitoring that a unit area sets hour effective especially.Above-mentioned structure, action and the effect in addition of this variation is identical with first variation of described first object lesson.
The following describes the 4th variation of this object lesson.
Figure 13 is the lengthwise position (X coordinate) of getting glass substrate in X-axis, gets the lateral attitude (Y coordinate) of glass substrate in Y-axis, gets number of defects at the Z axle, the three-dimensional distribution map of the aggregate result of the defective in this variation of illustration.It should be noted that Figure 13 represents the result identical with check result shown in Figure 9.
As shown in figure 13, in this variation, when in described first object lesson, representing the aggregate result of defective, utilize three-dimensional distribution map, represent the distribution of the collected state of defective three-dimensionally.In view of the above, can emphasize the display defect concentrated area, the manager can be easily and is held the integral body tendency of the collected state of defective quantitatively.Above-mentioned structure, action and the effect in addition of this variation is identical with first variation of described first object lesson.
It should be noted that, when the aggregate result of expression defective, emphasize that the method for display defect concentrated area is not limited to described second～the 4th variation.For example, in first variation, make the brightness difference of mark, show the mark of expression defective concentrated area brightly, near the demonstration defective concentrated area " sidenote ".
The following describes second object lesson.
The structure of the alarm device of this object lesson and described first object lesson are same, but in this object lesson, use this alarm device in the supervision of the factory that makes semiconductor chip.
Figure 14 is the figure of the manufacture method of pattern ground illustration semiconductor chip.
As shown in figure 14, the manufacturing step of semiconductor chip at first for example on the wafer 301 that is made of monocrystalline silicon, forms a plurality of electronic circuits 302 as precursor structures.Then, wafer 301 cutting, each is cut apart at electronic circuit 302.In view of the above, make semiconductor chip 303.Above-mentioned explanation is a summary, in fact, in order to make semiconductor chip, needs hundreds of steps.And, in the factory that makes semiconductor chip, by many each step of manufacturing installation parallel processing.Therefore, the pass course of the semiconductor chip of factory is pressed each batch and difference.
At this moment, if in a manufacturing installation of a step, produce unusually, then improve by the possibility that produces defective in the semiconductor chip of this manufacturing installation.For example, if in the manufacturing installation of the part of the manufacturing step of undertaking electronic circuit 302, produce unusual, generation defective 304 in the electronic circuit 302 that forms by this manufacturing installation then, the semiconductor chip 303 that comprises this defective 304 becomes invalid chip 305.
In this object lesson, by with the identical method of described first object lesson, alarm device is according to about the check result of wafer 301, monitor the generation tendency of defective 304, detect the unusual generation of factory, when unusual the generation, the manager of factory is given the alarm.
It should be noted that the alarm device of any variation among first of described first object lesson～4th also can resemble and use this second object lesson in the purposes of the manufacturing works that monitor semiconductor chip.Promptly in this second object lesson, can resemble each variation of first object lesson when the aggregate result of output defective, emphasize the display defect concentrated area.
In addition, in described each object lesson, be illustrated in the example of the transmission of carrying out alarm in the process of analysis successively and result's output, but also can be unusual for all categories as analytic target, after analyze finishing, gather the transmission of carrying out alarm and result's output.
Further, in described each object lesson, expression sends alarm by Email, on the website, publish the example of attached information in the alarm, but the present invention is not limited thereto, for example, can notify alarm and attached information both sides wherein to the manager by Email.Perhaps on alarm device, connect display unit, printer or loud speaker, carry out the demonstration, printing of alert content or based on the output of sound by them, thereby, also can send alarm in the place that alarm device is being set by electric network.
In addition, also can not pass through database from the manufacturing installation of factory and the information of testing fixture, directly to the alarm device input, perhaps the operator is transported to alarm device to the medium of these information of record, and alarm device reads information from these medium.
In addition, in described each object lesson, after the expression alarm device detects the defective concentrated area, about manufacturing installation calculation element common point, extract the example of reason candidate device out, but the present invention is not limited thereto, also can be after detecting the defective concentrated area, common point more than in chamber common point, sheet position common point, chip position common point, kind common point, material common point and the method for making common point any one is calculated with the device common point, and perhaps the replacement device common point is calculated.In view of the above, defective former can be inferred this reason because when chamber, sheet position, chip position, kind, material or method for making.
Claims (8)
1. alarm device is used for detecting by the unusual generation of handling the factory that substrate manufactures a product, and this alarm device is characterised in that:
According to the check result of the described substrate surface in the manufacture process of described product, each of the given size set by described each unusual kind monitored that the defective generation degree of unit area adds up to;
Generation of defects degree described in each described supervision unit area and benchmark are compared;
When detecting described generation of defects degree, send alarm and also export described aggregate result than the also high supervision unit area of described benchmark.
2. alarm device according to claim 1 is characterized in that:
Judge whether exist handled in the substrate that detects the described generation of defects degree supervision unit area also higher than described benchmark, the creating conditions of the described substrate more than the regulation ratio;
Handled creating conditions of the described substrate more than the regulation ratio when existing described, expression has been handled the described information of creating conditions of the substrate more than the regulation ratio and exported with described alarm and described aggregate result.
3. alarm device according to claim 2 is characterized in that:
Described the creating conditions when existing of handling the substrate more than the regulation ratio, only, add up to the generation of defects degree at described each supervision unit area to by the described handled substrate of creating conditions of having handled the substrate in the substrate that detects the described generation of defects degree supervision unit area also higher, more than the regulation ratio than described benchmark;
Export this aggregate result.
4. according to any described alarm device in the claim 1 to 3, it is characterized in that:
By generation set with described substrate on the figure of the corresponding coordinate of coordinate, on the position that is equivalent to the described generation of defects position on the described substrate of described figure, show the information of the described defective of expression, carry out the output of described aggregate result.
5. alarm device according to claim 4 is characterized in that:
In the demonstration of described figure, emphasize the supervision unit area that shows that described generation of defects degree is also higher than described benchmark.
6. alarm device according to claim 5 is characterized in that:
In the demonstration of described figure, the supervision unit area configuration flag also higher than described benchmark to described generation of defects degree is in addition described supervision unit area configuration flag not.
7. alarm device according to claim 4 is characterized in that:
In the demonstration of described figure, by with the check result of the described substrate of each region representation of described supervision unit area different size.
8. according to any described alarm device in the claim 1 to 3, it is characterized in that:
Check result to a plurality of described substrates is carried out additional calculation, carries out the total of described generation of defects degree.
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| JP2006182548 | 2006-06-30 |
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| CN102142355B (en) * | 2010-02-02 | 2013-07-17 | 吕一云 | Application method of object manufacture defect |
| CN102522350B (en) * | 2011-11-29 | 2014-05-28 | 上海华力微电子有限公司 | Method and device for detecting failed production machine platforms |
| CN102412168B (en) * | 2011-11-30 | 2013-10-30 | 上海华力微电子有限公司 | Wafer defect defection method and system |
| CN110223929B (en) * | 2019-05-07 | 2022-01-04 | 徐州鑫晶半导体科技有限公司 | Method for determining defect source of wafer |
| WO2020224612A1 (en) * | 2019-05-07 | 2020-11-12 | 徐州鑫晶半导体科技有限公司 | Method and system for automated detection and control of defects on wafer |
| CN110907135A (en) * | 2019-11-14 | 2020-03-24 | 深圳市华星光电半导体显示技术有限公司 | Control method and device of manufacturing equipment |
| CN110987493A (en) * | 2019-11-14 | 2020-04-10 | 深圳市华星光电半导体显示技术有限公司 | Equipment abnormality detection method and device, storage medium and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5815397A (en) * | 1994-10-27 | 1998-09-29 | Fanuc Ltd. | Method of analyzing factors affecting product quality and adjusting molding conditions for injection molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5815397A (en) * | 1994-10-27 | 1998-09-29 | Fanuc Ltd. | Method of analyzing factors affecting product quality and adjusting molding conditions for injection molding machine |
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