CN100476416C - Defect dispay unit - Google Patents

Defect dispay unit Download PDF

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Publication number
CN100476416C
CN100476416C CNB2004800185074A CN200480018507A CN100476416C CN 100476416 C CN100476416 C CN 100476416C CN B2004800185074 A CNB2004800185074 A CN B2004800185074A CN 200480018507 A CN200480018507 A CN 200480018507A CN 100476416 C CN100476416 C CN 100476416C
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image data
defect
original digital
digital image
defects detection
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CN1813185A (en
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大西孝明
秋山周次
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Olympus Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing

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  • General Health & Medical Sciences (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
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  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
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Abstract

Each original image data of a glass substrate is retained in an image retaining unit (6), and the detection result of each defect unit (G1-G6) is displayed on the screen of a display (3) when inspection conditions such as respective defect detection levels and contrasts are manually or automatically set or changed by an inspection condition changing unit (9) with respect to these elements of original image data.

Description

Defect dispay unit
Technical field
The present invention relates to a kind of defect dispay unit, it can set change to the defects detection level of the defective part on the inspection objects such as glass substrate that are suitable for extracting semiconductor wafer for example or LCD most.
Background technology
In the manufacturing process of LCD, the use base board checking device carries out the inspecting substrate to glass substrate.Open technology below having put down in writing in the 2003-100827 communique the spy: be presented on the display picture glass substrate being carried out the obtained view data of macroscopic view shooting, on this picture, operating personnel extract and to comprise defect part and preserves as the defect image data at interior a part of image-region, and are synthesized to the defect image data on the benchmark image data and are presented on the display picture.
As the preservation/technique for displaying of carrying out defect image, for example there is the spy to open the 2002-192699 communique.Technology below in this communique, having put down in writing: benchmark image with check that object images compares, cut to comprise defective part, preserve this defect image data, these defect image data are sticked on the benchmark image data reproduce in interior zone.
Under the situation of checking glass substrate, because of each operation of LCD manufacturing makes the state of glass substrate, the number of the layer that for example forms on glass substrate changes, and perhaps applies resist etc. and makes the figure that forms on glass substrate or the diopter of defective change because of having or not.In this case, the inspection condition (detailed (recipe)) as to glass substrate is necessary Change Example such as defects detection level.
Open in 2003-100827 communique and the Te Kai 2002-192699 communique the spy, only reproduce the defect image data that demonstration is preserved, do not change the defects detection level that is used for detecting the defective part of checking object image data.
The present situation of glass substrate inspection is, obtains each defect image data of the defective part on the glass substrate and is presented on the display picture, confirms the state of the glass substrate that this is shown, the defects detection level set change then and there.
Therefore, do not setting under the situation of best defects detection level according to each operation of LCD manufacturing or the batch of glass substrate, can not the detection meeting defective part that manufacturing exerts an influence to LCD, perhaps the unnecessary portions flase drop that is not defective part is surveyed to Artifact, can not be carried out inspecting substrate accurately.
And the setting change of defects detection level is very time-consuming, must suspend inspecting substrate before setting the change end.And, the defects detection level is being carried out setting after changing, each defect image data that must obtain the defective part on the glass substrate are to confirm whether suitably the defects detection level has been carried out setting change.Under the situation that the setting of defects detection level is failed, must obtain defective data once more, require the setting of defects detection level is wanted skilled.
The spy opens and only carries out in the 2002-192699 communique the defect image data presentation on display picture, so the setting of defects detection level change result is not reflected on these shown defect image data.Therefore, must obtain the defect image data once more with setting defects detection level after changing confirms.
Summary of the invention
The purpose of this invention is to provide a kind of defect dispay unit, even the state of glass substrate changes, also can be easily and set the corresponding best inspection condition of state variation of change and glass substrate at short notice.
According to main points of view of the present invention, a kind of defect dispay unit is provided, have: image preservation portion, it is preserved to cut from by base board checking device the whole face of checking object substrate is made a video recording the substrate image data obtained and comprises the original digital image data that defective part obtains at interior periphery; Inspection condition changing unit, it shows the variable button that is used to change the defects detection level on display picture, utilize described variable button that the described original digital image data that is kept in the described image preservation portion is changed described defects detection level; The defective extraction unit, it has carried out setting the defects detection level that changes according to the described variable button by the condition of inspection changing unit, extracts the defect image data at original digital image data; And display control unit, according to the described defects detection level of having been carried out change by described inspection condition changing unit, the described defect image data presentation of extracting again at described original digital image data is on described display picture by described defective extraction unit for it.
Description of drawings
Fig. 1 is the structural drawing that an embodiment of defect dispay unit of the present invention is shown.
Fig. 2 is the synoptic diagram that cuts that the original digital image data of this device is shown.
Fig. 3 A is the figure that illustrates for the original digital image data that uses by these device making overlay image data.
Fig. 3 B is the figure that illustrates for the defect image data of using by these device making overlay image data.
Fig. 3 C illustrates the figure that selects the overlay image data of demonstration by this device.
Fig. 4 A is the figure to the setting change of the detection level of the defective part of white level that this device is shown.
Fig. 4 B is the figure to the setting change of the detection level of the defective part of black level that this device is shown.
Fig. 5 A is used for the figure that the emulation (emulation) to the defects detection level of this device describes.
Fig. 5 B is used for the figure that the emulation to the defects detection level of this device describes.
Fig. 6 A is the figure that the employed original digital image data of defects detection level in this device of automatic setting is shown.
Fig. 6 B is the figure that the original digital image data that laterally moves when the defects detection level in this device of automatic setting is shown.
Fig. 6 C illustrates the original digital image data when the defects detection level in this device of automatic setting and the figure of the difference image data of the original digital image data that laterally moves.
Fig. 6 D illustrates employed number of degrees distribution plan when the defects detection level in this device of automatic setting.
Fig. 7 A is that the contrast that illustrates in this device is emphasized the figure that the setting number of degrees before changing of level distribute.
Fig. 7 B is that the contrast that illustrates in this device is emphasized the figure that the setting number of degrees after changing of level distribute.
Embodiment
Below, with reference to accompanying drawing one embodiment of the present invention is described.
Fig. 1 is the structural drawing of defect dispay unit.Master control part 1 has CPU.This master control part 1 connects the display 3 of liquid crystal or CRT etc. by efferent 2.Master control part 1 connects manually input part 5 such as keyboard and mouse by input part 4.
Master control part 1 carry out to the preservation of the view data of image preservation portion 6 with read and writing and reading the information relevant of defect information storage part 7 with defective part.1 pair of display control unit 8 of master control part, inspection condition changing unit 9, defective extraction unit 10 and defect information display part 11 send action command.
In image preservation portion 6, preserve and for example check and original image (defect image) data of defective part on the detected inspection object by the inspection objects such as glass substrate of 12 pairs of semiconductor wafers of base board checking device or LCD.Below, describe as the example of checking object with the glass substrate that uses flat-panel monitor.Original digital image data for example is as shown in Figure 2, comprises defective part G at interior peripheral view data Dm from base board checking device the whole face of glass substrate being made a video recording to cut among whole the obtained view data D 1The data of gained.If on glass substrate, there are a plurality of defective part G, 6 defective part G for example 1～G 6, then in image preservation portion 6, preserve 6 original digital image data Dm 1～Dm 6
Defect information storage part 7 internal memories contain with glass substrate on each defective part G 1～G 6Relevant information, for example 6 defective part G 1～G 6Information such as each coordinate, each brightness, each defect kind, each size.
Display control unit 8 is according to the manual operation to manual input part 5, each the original digital image data Dm that is kept in the image preservation portion 6 1～Dm 6Guide look shows that (breviary demonstration) is on the picture of display 3.This display control unit 8 only comprises each defective part G to what the extraction the result of the action according to defective extraction unit 10 obtained 1～G 6Each defect image data Dg 1～Dg 6Guide look is presented on the picture of display 3, and the extraction the result of the action of described defective extraction unit 10 is to by the inspection condition of checking that condition changing unit 9 is changed, for example at each the defective part G on the glass substrate 1～G 6The extraction the result of the action of inspection condition when having carried out change.Guide look shows for example each defect image data Dg on the picture of display shown in Figure 13 1～Dg 6These defect image data Dg 1～Dg 6Has each defective part G respectively 1～G 6
Display control unit 8 selects to show each original digital image data Dm according to the manual operation to manual input part 5 on the picture of display 3 1～Dm 6, by what defective extraction unit 10 was extracted each defective part G only arranged 1～G 6Each defect image data Dg 1～Dg 6, or merge each original digital image data Dm respectively 1～Dm 6With each defect image data Dg 1～Dg 6And each the overlay image data Dr that obtains 1～Dr 6In any one data.In addition, display control unit 8 also can be only each overlay image data Dr 1～Dr 6Be presented on the picture of display 3.
For example, Fig. 3 A shows original digital image data Dm 1An example.This original digital image data Dm 1Be to have taken the original digital image data that formed regular figure on glass substrate (for example baseline) P obtains, and wherein also have defective part G 1Fig. 3 B shows defect image data Dg 1An example, only have defective part G 1Fig. 3 C shows overlay image data Dr 1An example, with original digital image data Dm 1With defect image data Dg 1Merge and make.
When display control unit 8 shows for example each defect image data Dg on the picture of display 3 1～Dg 6Perhaps each overlay image data Dr 1～Dr 6The time, change each defective part G by each kind of defective 1～G 6Show Color show output.
8 couples of each original digital image data Dm of display control unit 1～Dm 6, each defect image data Dg 1～Dg 6, or each overlay image data Dr 1～Dr 6Sort and be presented on the picture of display 3.The item that sorts be stored in the defect information storage part 7 with glass substrate on each defective part G 1～G 6Relevant information, i.e. each defective part G for example 1～G 6Each coordinate order, each brightness order, each defect kind order, each size sequential scheduling.
Display control unit 8 is according to the manual selection indication to manual input part 5, from each original digital image data Dm 1～Dm 6, each defect image data Dg 1～Dg 6, or each overlay image data Dr 1～Dr 6In select arbitrarily that view data is presented on the picture of display 3.
9 pairs of inspection condition changing units are from being kept at each the original digital image data Dm in the image preservation portion 6 1～Dm 6Middle each defective part G that extracts 1～G 6The inspection condition set change.The setting change of inspection condition is the setting change of horizontal La of the 1st defects detection and the horizontal Lb of the 2nd defects detection, and the horizontal La of the 1st defects detection is at having than each original digital image data Dm 1～Dm 6The white level of the high brightness (luminance level) of normal level, the horizontal Lb of the 2nd defects detection is at the black level with brightness lower than normal level.The setting change of inspection condition is at each original digital image data Dm 1～Dm 6Contrast emphasize the setting change of level.
The variable method of the horizontal La of these the 1st, the 2nd defects detection, Lb is as described below.
Inspection condition changing unit 9 shows the defects detection level change piece BL that is used for the horizontal La of the 1st, the 2nd defects detection, Lb are set change as shown in Figure 1 on the picture of display 3.In this defects detection level change piece BL, has each the 1st variable button Bh as the 1st variable operation end 1, Bh 2With each the 2nd variable button Bd as the 2nd variable operation end 1, Bd 2, described the 1st variable operation end makes at each the original digital image data Dm shown in Fig. 4 A 1～Dm 6In the horizontal La of the 1st defects detection of defective part Gh of white level of for example broken string etc. variable, described the 2nd variable operation end makes at the horizontal Lb of the 2nd defects detection of the defective part Gd of the black level that is for example caused by dust etc. shown in Fig. 4 B variable.
In addition, inspection condition changing unit 9 can be set change in the lump at each original digital image data Dm 1～Dm 6The horizontal La of the 1st, the 2nd defects detection, Lb.Inspection condition changing unit 9 also can be passed through the mouse of the manual input part 5 of operation etc., uses pointer to specify each original digital image data Dm 1～Dm 6, come individually the horizontal La of the 1st, the 2nd defects detection, Lb to be set change.
Have emulation button EB and automatic setting button AB in defects detection level change piece BL, this emulation button EB is each the defective part G when being used for can changing the horizontal La of the 1st, the 2nd defects detection, Lb arbitrarily by the manual operation to manual input part 5 1～G 6Testing result be presented at the affirmation operating side of confirming on the picture of display 3, this automatic setting button AB is used for the horizontal La of automatic setting the 1st, the 2nd defects detection, Lb.
Each the 1st variable button Bh 1, Bh 2And each the 2nd variable button Bd 1, Bd 2By the manual operation of manual input part 5 is set.1st, the 2nd variable button Bh 1, Bd 1Set the horizontal La of the 1st, the 2nd defects detection, Lb higherly respectively.1st, the 2nd variable button Bh 2, Bd 2Set the horizontal La of the 1st, the 2nd defects detection, Lb lowlyer respectively.
For example shown in Fig. 5 A and Fig. 5 B, if brightness toward the left side be low-level, turn right under the high-caliber situation, if for example shown in Fig. 5 A, at original digital image data Dm 1The horizontal La of the 1st defects detection be set in low-level side, then at defective part G 1Accuracy of detection become strict, if be set in high-level side, then at defective part G 1Accuracy of detection become loose.
Therefore, if defective part G 1Be on the high level of the horizontal La of brightness ratio the 1st defects detection, then this defective part G 1In the Wa of detection level territory and can detect.Shown in Fig. 5 B, if defective part G 1Be positioned at low horizontal side, then this defective part G than the horizontal La of defects detection 1In can not detecting territory Wb and can not detect.
In addition, for the horizontal Lb of the 2nd defects detection, if defective part G 1Be on the low level of the horizontal Lb of brightness ratio the 2nd defects detection, then this defective part G 1In the Wa of detection level territory and can detect.Therefore, if at original digital image data Dm 1The horizontal Lb of the 2nd defects detection be set in low-level side, then at defective part G 1Accuracy of detection become loose, if be set in high-level side, then at defective part G 1Accuracy of detection become strict.
Like this when to each the 1st variable button Bh 1, Bh 2With each the 2nd variable button Bd 1, Bd 2When carrying out manual operation and having set under the state of the horizontal La of the 1st, the 2nd defects detection, Lb operational simulation button EB arbitrarily, check that condition changing unit 9 uses the horizontal La of the 1st defects detection that carried out setting change or the horizontal Lb of the 2nd defects detection to being kept at each the original digital image data Dm in the image preservation portion 6 1～Dm 6Carry out each defective part G 1～G 6Detection, each the defect image data Dg that extracts again according to this testing result 1～Dg 6Guide look is presented on the picture of display 3.
When operation automatic setting button AB, check that condition changing unit 9 difference automatic settings are at each original digital image data Dm 1～Dm 6, or 1 original digital image data Dm 1..., or Dm 6The horizontal La of the 1st and the 2nd defects detection, Lb.
1st, the automatic setting of the horizontal La of the 2nd defects detection, Lb is performed as follows.
For example, at automatic setting at the original digital image data Dm shown in Fig. 6 A 1The situation of the horizontal La of the 1st defects detection under, at first, shown in Fig. 6 B, check that condition changing unit 9 makes original digital image data Dm 1Laterally moved the landscape images data Dm that obtains for 1 cycle that is formed at the regular figure on the glass substrate just 1'.
Then, shown in Fig. 6 C, check condition changing unit 9 making original digital image data Dm 1With view data Dm 1' difference image data Dm 1SAt these difference image data Dm 1SIn, because 1 cycle of just laterally having moved the regular figure that is formed on the glass substrate, thereby the figure on the glass substrate offsets, and retained original digital image data Dm 1On defective part G 1The view data Dm that laterally moves 1' on defective part G 1'.
Then, check 9 pairs of difference image data of condition changing unit Dm 1SIn brightness (the original digital image data Dm of each pixel 1With view data Dm 1' the luminance difference of each pixel) the data number count the number of degrees distribution plan of the brightness shown in the construction drawing 6D.In the number of degrees distribution plan of this brightness, distribution K 1Represent each defective part G 1, G 1', distribution K 2Represent low-level noise.
Therefore, in order to detect each defective part G 1, G 1', check that condition changing unit 9 is automatically made the horizontal La of the 1st defects detection than distribution K 1Low level.
As shown in Figure 1, check that condition changing unit 9 shows that on the picture of display 3 being used to set the change contrast emphasizes that the contrast of level emphasizes that level changes piece BC.
Contrast emphasizes that the setting change of level is as described below.
9 pairs of inspection condition changing units are original digital image data Dm for example 1In the data number of brightness of each pixel count the number of degrees distribution plan of the brightness shown in the construction drawing 7A.
Then, check condition changing unit 9 shown in Fig. 7 B, the width of brightness is broadened, be transformed to view data Dm according to the number of degrees distribution plan of the brightness after the width of this brightness is broadened at the number of degrees distribution plan of brightness 1'.Acquired image data Dm like this 1' become the image that the light and shade difference becomes clear, to defective part G 1Emphasize, on the picture that is presented at display 3.
Defective extraction unit 10 is according to carried out setting the horizontal La of the 1st, the 2nd defects detection, the Lb of change and the inspection condition that contrast is emphasized level by the condition of inspection changing unit 9, to each original digital image data Dm 1～Dm 6Carry out the extraction action of defective part in the lump.Defective extraction unit 10 is passed through the mouse of the manual input part 5 of operation etc., uses pointer to specify each original digital image data Dm 1～Dm 6, individually carry out the extraction action of defective part.
When the mouse that uses manual input part 5 etc. to each the defective part G on the glass substrate on the picture that is presented at display 3 1～G 6When manually indicating, defect information display part 11 is read from defect information storage part 7 and this defective part G 1～G 6Relevant information, i.e. each defective part G 1～G 6Each coordinate, each brightness, various types of, each size etc., on display picture, with each original digital image data Dm 1～Dm 6, each defect image data Dg 1～Dg 6, or each overlay image data Dr 1～Dr 6Together, be presented on the picture area of the sky on the display picture.
Below, the action of the device of above-mentioned formation is described.
Be formed in inspection under the situation of the regular figure on the glass substrate of LCD, when for example being formed on number of plies difference on the glass substrate because of the manufacturing process of glass substrate makes, when perhaps making that because of having or not of the coating of resist etc. the diopter of figure on the glass substrate etc. changes, must change at the inspection condition of glass substrate.
In image preservation portion 6, preserved each the defective part G that has on the glass substrate 1～G 6Each original digital image data Dm 1～Dm 6And, contain each defective part G on the glass substrate at defect information storage part 7 internal memories 1～G 6The information such as kind, each size of each coordinate, each brightness, each defective.
When having imported each original digital image data Dm by manual input part 5 operations 1～Dm 6When having a guide look of the indication of demonstration, display control unit 8 is read each the original digital image data Dm that is kept in the image preservation portion 6 1～Dm 6And guide look is presented on the picture of display 3.
These have carried out each original digital image data Dm that guide look shows 1～Dm 6In each defective part G of having 1～G 6Comprise: thus since to LCD exert an influence defective part (each defective part G for example of certain needs detection of manufacturing 1～G 3), and manufacturing does not exert an influence and the defective part that do not need to detect (each defective part G for example to LCD 4～G 6).Therefore, each defective part G in order only certain needs to be detected 1～G 3Detect reliably, carry out the setting change of the horizontal La of the 1st, the 2nd defects detection, Lb.
Under the situation of the setting change of manually carrying out the horizontal La of the 1st, the 2nd defects detection, Lb, as shown in Figure 1, by checking condition changing unit 9, change each the 1st variable button Bh the defects detection level change piece BL on the picture that is presented at display 3 by manual operation from manual input part 5 1, Bh 2Like this, set change at original digital image data Dm shown in Figure 4 1In the horizontal La of defects detection of defective part Gh of white level.
And, change each the 2nd variable button Bd from manual input part 5 by manual operation 1, Bd 2Thereby, set the 2nd defects detection horizontal Lb of change at the defective part Gd of the black level shown in Fig. 4 B.
The horizontal La of the 1st, the 2nd defects detection, Lb are being carried out setting after changing like this, when operational simulation button EB, defective extraction unit 10 is according to the horizontal La of the 1st, the 2nd defects detection, the Lb that have been carried out setting change by the condition of inspection changing unit 9, to each original digital image data Dm 1～Dm 6Carry out the extraction action of defective part.
When the extraction release of this defective part, display control unit 8 is only each the defective part G that extracted by defective extraction unit 10 1～G 6Each defect image data Dg 1～Dg 6Guide look is presented on the picture of display 3.Like this, by checking each the defect image data Dg that is had a guide look of on the picture that is presented at display 3 1～Dg 6, can confirm based on each the defective part G that has carried out setting the horizontal La of each defects detection, the Lb of change 1～G 6Testing result.
That is, on the picture of display 3, show each the defective part G that includes certain necessary detection 1～G 3Each defect image data Dg 1～Dg 3, and do not show each defective part (Artifact) G that need not to detect 4～G 6Like this, can judge immediately by manually having carried out setting whether the horizontal La of each defects detection, the Lb that change are suitable levels.
In addition, if each the defective part G that need not to detect 4～G 6In one be shown each the 1st variable button Bh of manual operation once more then 1, Bh 2With each the 2nd variable button Bd 1, Bd 2, the horizontal La of the 1st, the 2nd defects detection, Lb are set change.
Under the situation of the setting change of carrying out the horizontal La of the 1st, the 2nd defects detection, Lb automatically, when operating automatic setting button AB, check that condition changing unit 9 difference automatic settings are at each original digital image data Dm by manual input part 5 1～Dm 6, or 1 original digital image data Dm 1..., or Dm 6The horizontal La of the 1st, the 2nd defects detection, Lb.
For example, in order not detect each the defective part G that is judged as Artifact 4～G 6And under the situation of the horizontal La of automatic setting the 1st, the 2nd defects detection, Lb, check that condition changing unit 9 is with original digital image data Dm 4～Dm 6Just in 1 cycle of laterally moving the figure on the glass substrate, shown in Fig. 6 C, make original digital image data Dm then 4～Dm 6Laterally move view data Dm 4'～Dm 6' difference image data Dm 4S～Dm 6S
Then, check condition changing unit 9 making difference image data Dm 4S～Dm 6SThe number of degrees distribution plan of brightness, be used to detect each defective part G according to the number of degrees distribution plan automatic setting of this brightness 4～G 6, G 4'～G 6' the horizontal La of the 1st, the 2nd defects detection, Lb.
When the automatic setting of the horizontal La of the 1st defects detection finished, defective extraction unit 10 was according to having carried out the horizontal La of the 1st, the 2nd defects detection, the Lb of automatic setting to each original digital image data Dm 1～Dm 6Carry out the extraction action of defective part.
Display control unit 8 is only including each defective part (true defect) G that is extracted by defective extraction unit 10 1～G 3Each defect image data Dg1～Dg3 guide look be presented on the picture of display 3.Like this, by checking each the defect image data Dg that is had a guide look of on the picture that is presented at display 3 1～Dg 3, whether the horizontal La of the 1st, the 2nd defects detection, the Lb that can confirm to have carried out automatic setting immediately are suitable levels.
When the manual setting of carrying out the horizontal La of the 1st, the 2nd defects detection, Lb or automatic setting, in order to emphasize each original digital image data Dm 1～Dm 6On each defective part G 1～G 6Be presented on the picture of display 3, can emphasize each original digital image data Dm 1～Dm 6Contrast.
According to an above-mentioned embodiment, preserve each original digital image data Dm of glass substrate like this 1～Dm 6, owing to can on the picture of display 3, confirm at these original digital image datas Dm 1～Dm 6Each defective part G when having changed the horizontal La of each defects detection, Lb by manual or automatic setting 1～G 6Testing result, thereby can be easily and the short time in set the horizontal La of only the 1st, the 2nd defects detection of change, Lb.The result, by the horizontal La of the 1st, the 2nd defects detection, Lb after resetting are fed back to base board checking device 12, even when variation has taken place the state of glass substrate, also can shorten the Time Created (が り Time Inter on the upright Chi) of inspecting substrate by base board checking device 12.
When the manual setting of carrying out the horizontal La of the 1st, the 2nd defects detection, Lb or automatic setting, by to each original digital image data Dm 1～Dm 6Degree of comparing is emphasized to handle, and can emphasize to be presented at each the original digital image data Dm that shows on the picture of display 3 1～Dm 6On each defective part G 1～G 6, discern each defective part G easily 1～G 6
About each original digital image data Dm 1～Dm 6, comprise defect part in interior part zone by from obtained view data D that the whole face of glass substrate is made a video recording, only cutting, make each original digital image data Dm 1～Dm 6Data capacity reduce, can significantly cut down the preservation capacity of image preservation portion 6, and at short notice can be on the picture of display 3 original digital image data, defect image data and overlay image data presentation.
Display control unit 8 can use only at each original digital image data Dm 1～Dm 6In for example original digital image data by 5 indications of manual input part (each original digital image data Dm for example 1, Dm 3) carried out setting the horizontal La of the 1st, the 2nd defects detection, the Lb that changes, detect each defective part G 1, G 3That is, can use the horizontal La of the 1st, the 2nd defects detection, Lb to detect each defective part G 1～G 6Brightness, the black level defective part Gd that causes such as white level defective part Gh such as broken string and dust for example.1st, the horizontal La of the 2nd defects detection, Lb can use the 1st variable button Bh 1, Bh 2With the 2nd variable button Bd 1, Bd 2Change, can change each defective part G arbitrarily 1～G 6Accuracy of detection.
In addition, the horizontal La of the 1st, the 2nd defects detection, Lb also can be set, and 1 defects detection level is set, use 1 variable button to change this defects detection level, thereby detect the defective part Gh of white level and the defective part Gd of black level respectively.
Display control unit 8 can be according to the selection indication from manual input part 5, from each original digital image data Dm 1～Dm 6, each defect image data Dg 1～Dg 6, or the overlay image data in select arbitrarily that view data is presented on the picture of display 3, perhaps according to each defective part G 1～G 6Each coordinate order, each brightness order, various types of order, each size sequential scheduling sort and be presented on the picture of display 3 so that check each defective part G easily 1～G 6
Display control unit 8 can be on the picture of display 3, according to each defective part G 1～G 6Inspection, making ins all sorts of ways shows each defect image data Dg 1～Dg 3Deng.For example, only each the defect image data Dg that is extracted by defective extraction unit 10 when having changed the condition of inspection 1～Dg 3Guide look is presented on the picture of display 3.Each overlay image data Dr 1～Dr 6Be presented on the picture of display 3.Each defect image data Dg 1～Dg 3, each original digital image data Dm 1～Dm 6, or each overlay image data Dr 1～Dr 6In any one data select to be presented on the picture of display 3.Can change Show Color each defective part G by defect kind 1～G 6Be presented on the picture of display 3.
Inspection condition changing unit 9 can be according to each defective part G 1～G 6Inspection, set in the lump or respectively the horizontal La of change the 1st, the 2nd defects detection, Lb.And, having emulation button EB, this emulation button EB is used for each the defective part G when having changed the horizontal La of the 1st, the 2nd defects detection, Lb 1～G 6Testing result be presented on the picture of display 3 and confirm.
In addition, an above-mentioned embodiment can be out of shape as described below.
Each the 1st variable button Bh as the 1st variable operation end 1, Bh 2, as each the 2nd variable button Bd of the 2nd variable operation end 1, Bd 2, and be not limited to be presented on the picture of display 3 as the emulation button EB that confirms the operating side, can use the switch that is separately positioned on the operation board etc., perhaps also can operate by the key operation of keyboard.
Utilizability on the industry
The invention is not restricted in the base board checking device for the glass substrate of liquid crystal display, use The setting change of defects detection level, also can be applied to be formed with the semiconductor die of regular figure The inspection of sheet.

Claims (8)

1. defect dispay unit is characterized in that having:
Image preservation portion, it is preserved to cut from by base board checking device the whole face of checking object substrate is made a video recording the substrate image data obtained and comprises the original digital image data that defective part obtains at interior periphery;
Inspection condition changing unit, it shows the variable button that is used to change the defects detection level on display picture, utilize described variable button that the described original digital image data that is kept in the described image preservation portion is changed described defects detection level;
The defective extraction unit, it extracts described defective part according to the described defects detection level that the described variable button by described inspection condition changing unit has carried out change at described original digital image data; And
Display control unit, according to the described defects detection level of having been carried out change by described inspection condition changing unit, the described defect image data presentation of extracting again at described original digital image data is on described display picture by described defective extraction unit for it.
2. defect dispay unit according to claim 1 is characterized in that, described display control unit is had a guide look of demonstration to the described original digital image data that is kept in the described image preservation portion on described display picture,
The described variable button of described inspection condition changing unit changes described defects detection level in the lump at having a guide look of the whole described original digital image data that shows or utilize the specified described original digital image data of indicator on described display picture.
3. defect dispay unit according to claim 1, it is characterized in that the variable button that the variable button and being used to that described inspection condition changing unit will be used for changing the described defects detection level of the high white level defective part of the brightness ratio normal level of described original digital image data changes the described defects detection level of the low black level defective part of the described normal level of brightness ratio separately shows on described display picture.
4. defect dispay unit according to claim 1 and 2 is characterized in that, described inspection condition changing unit emphasizes that the setting change of contrast of described view data is as described defects detection level.
5. defect dispay unit according to claim 1, it is characterized in that described display control unit will merge overlay image data presentation that the defect image data of described original digital image data and the described defective part of being extracted by described defective extraction unit obtain on described display picture.
6. defect dispay unit according to claim 5 is characterized in that, described display control unit is with described overlay image data presentation on described display picture the time, and the color that changes the described defective part of described defect image data shows.
7. defect dispay unit according to claim 5, it is characterized in that, described display control unit on described display picture, select to show described defect image data, described original digital image data or merged described defect image data and described overlay image data that described original digital image data obtains in any one view data.
8. defect dispay unit according to claim 7 is characterized in that, described display control unit sorts to described original digital image data, described defect image data or described overlay image data or selects to be presented on the described display picture.
CNB2004800185074A 2003-06-30 2004-06-28 Defect dispay unit Expired - Fee Related CN100476416C (en)

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KR100791195B1 (en) 2008-01-02
WO2005001455A1 (en) 2005-01-06

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