WO2022109949A1 - 不良图片缺陷等级识别的方法、装置及存储介质 - Google Patents
不良图片缺陷等级识别的方法、装置及存储介质 Download PDFInfo
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- 230000007547 defect Effects 0.000 title claims abstract description 355
- 238000000034 method Methods 0.000 title claims abstract description 39
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- 239000002245 particle Substances 0.000 claims description 30
- 238000002161 passivation Methods 0.000 claims description 28
- 238000003062 neural network model Methods 0.000 claims description 12
- 239000010409 thin film Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 15
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- 238000012545 processing Methods 0.000 description 5
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- 230000006870 function Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000010200 validation analysis Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
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- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
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- G—PHYSICS
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20084—Artificial neural networks [ANN]
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- G—PHYSICS
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
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- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30168—Image quality inspection
Definitions
- the present disclosure relates to the field of image recognition, and in particular, to a method, device and storage medium for identifying defect levels of bad pictures.
- the defects occurring in each process of the product can be detected by automatic optical inspection (Auto Optical Inspection, AOI), and the defective pictures containing the defects can be taken.
- Automatic optical inspection Auto Optical Inspection, AOI
- the present disclosure provides a method, device and storage medium for identifying defect levels of bad pictures, which are used to solve the technical problem in the prior art that bad pictures that have a substantial impact on product yield cannot be quickly and accurately determined.
- the technical solution of a method for identifying defect levels of bad pictures is as follows:
- the defect level of the defect is determined; wherein, the defect level is the degree of influence of the defect on the product yield.
- a possible implementation, to determine the defect size of the defect from the bad picture includes:
- the maximum length of the defect in the first direction and the second direction is determined as the defect size; wherein the first direction is perpendicular to the second direction.
- a possible implementation manner according to the defect type to which the defect belongs, and the size relationship between the defect size and the design size, determine the defect level of the defect, including:
- the grade defect is determined according to the judgment result.
- the bad type when the bad picture is a bad picture in the display panel, the bad type includes bad particles and bad breakage of the passivation layer.
- the defect type to which the defect belongs is determined by the neural network model in the defect automatic classification system, and the defect level judgment condition used for the defect is determined, including:
- the defect type is particle defect
- the value range of the set magnification is 1.3-1.7;
- the failure type is failure of passivation layer fracture
- the conditions for determining poor particles include:
- the defect level is determined to be defective Quality risk; if the ratio of the defect size to the design size of the channel is greater than the set magnification, the defect level is determined to be bad without quality risk;
- the defect level is determined to be defective with quality risk; if the ratio of the defect size to the design size of the intersection position is greater than the set magnification, the defect level is determined to be Bad quality without risk.
- the conditions for determining the poor fracture of the passivation layer include:
- the defect level is bad and repairable
- the design distance between the defect size and the two adjacent data lines is greater than the set magnification, it is determined that the defect level is non-repairable.
- a possible implementation manner, after determining the defect level of the bad picture, further includes:
- the defects are marked with different marks for different defect grades.
- an embodiment of the present disclosure provides a device for identifying defect levels of bad pictures, including:
- Defect size determination unit which is used to determine the defect size of defects from bad pictures
- a design size determination unit configured to determine the design size of the pattern corresponding to the adjacent parts at the location of the defect according to the product model corresponding to the defective picture;
- a defect level determination unit configured to determine the defect level of the defect according to the defect type to which the defect belongs and the size relationship between the defect size and the design size; wherein, the defect level is the defect-to-product yield rate degree of influence.
- the defect size determination unit is used for:
- the maximum length of the defect in the first direction and the second direction is determined as the defect size; wherein the first direction is perpendicular to the second direction.
- the defect level determination unit is used for:
- the grade defect is determined according to the judgment result.
- the bad type when the bad picture is a bad picture in the display panel, the bad type includes bad particles and bad breakage of the passivation layer.
- the defect level determination unit is further used for:
- the defect type is particle defect
- the value range of the set magnification is 1.3-1.7;
- the failure type is failure of passivation layer fracture
- the conditions for determining poor particles include:
- the defect is determined The grade is bad with quality risk; if the ratio of the defect size to the channel is greater than the set magnification, the defect grade is determined to be bad without quality risk;
- the defect level is determined to be defective with quality risk; if the ratio of the defect size to the design size of the intersection position is greater than the set magnification, the defect level is determined to be Bad quality without risk.
- the PVX Open bad judgment condition includes:
- the defect level is bad and repairable
- the design distance between the defect size and the two adjacent data lines is greater than the set magnification, it is determined that the defect level is non-repairable.
- the defect level determination unit is further used for:
- the defects are marked with different marks for different defect grades.
- an embodiment of the present disclosure provides an apparatus for automatically identifying a defect level of a bad picture, including: at least one processor, and
- a memory connected to the at least one processor
- the memory stores instructions that can be executed by the at least one processor, and the at least one processor executes the above-mentioned automatic identification method for defective picture defect levels by executing the instructions stored in the memory.
- an embodiment of the present disclosure further provides a device for automatically identifying defect levels of bad pictures, including:
- a memory connected to the at least one processor
- the memory stores instructions executable by the at least one processor, and the at least one processor executes the method according to the first aspect above by executing the instructions stored in the memory.
- an embodiment of the present disclosure further provides a readable storage medium, including:
- the memory is used to store instructions that, when executed by the processor, cause an apparatus including the readable storage medium to perform the method as described in the first aspect above.
- FIG. 1 is a flowchart for identifying a defect level of a bad picture according to an embodiment of the present disclosure
- FIG. 2 is a schematic diagram of determining a defect size of a defect from a bad picture according to an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of particle defects located in a channel of a thin film transistor according to an embodiment of the present disclosure
- FIG. 4 is a schematic diagram of particle defects located at the intersections of scan lines and data lines according to an embodiment of the present disclosure
- FIG. 5 is a schematic diagram illustrating that the particle defect provided by the embodiment of the present disclosure is a poor fracture of the passivation layer
- FIG. 6 is a schematic structural diagram of a defect level identification of a bad picture according to an embodiment of the present disclosure.
- Embodiments of the present disclosure provide a method, a device, and a storage medium for automatically identifying the defect level of a bad picture, so as to solve the technology in the prior art that cannot quickly and accurately determine a bad picture that has a substantial impact on product yield. question.
- an embodiment of the present disclosure provides a method for automatically identifying a defect level of a bad picture, and the processing process of the method is as follows.
- Step 101 Determine the defect size of the defect from the bad picture.
- the maximum length of the defect in the first direction and the second direction can be determined as the defect size; wherein the first direction is perpendicular to the second direction.
- FIG. 2 a schematic diagram of determining a defect size of a defect from a bad picture according to an embodiment of the present disclosure.
- the defect in Fig. 2 is a particle (Particle, PT) defect, as shown in the black continuous area in the dotted line area in Fig. 2.
- the maximum length of the PT defect is determined as X1 in the first direction (X) shown in Fig. 2.
- the two directions (Y) determine the maximum length of the PT defect as Y1, and take the larger of X1 and Y1 as the defect size of the PT defect.
- step 101 can be executed.
- Step 102 Determine the design size of the pattern corresponding to the adjacent parts at the location of the defect according to the product model corresponding to the defective picture.
- the pattern corresponding to the adjacent components at the location of the defect may be, for example, the pattern corresponding to components such as components, traces, and film layers located around the defect in the inspected product (eg, display panel, circuit board, chip).
- the pattern corresponding to the adjacent components at the location of the defect can be Thin Film Transistor (TFT), Data Line, and Gate Line.
- TFT Thin Film Transistor
- Data Line Data Line
- Gate Line You can obtain the relevant design dimensions of TFT, data lines, and scan lines, such as the design dimensions of the channel (Channel) in the TFT, the width of the data lines, and the design spacing.
- step 103 After determining the design size of the pattern corresponding to the adjacent component at the location of the defect, step 103 can be executed.
- Step 103 Determine the defect level of the defect according to the defect type to which the defect belongs and the relationship between the defect size and the design size; wherein, the defect level is the degree of influence of the defect on the product yield.
- the bad type of the defect in the bad picture may include bad particle (PT bad), bad passivation layer fracture (Passivation Open, PVX Open) and the like.
- the defect level may be, for example, defective without quality risk, defective with quality risk, defective can be repaired, defective can not be repaired, and the like. Of course, these defect levels can also be quantified. For example, 0 means bad without quality risk, 3 means bad can be repaired, 8 means bad cannot be repaired, and 9 means bad with quality risk; or graded, such as high, The risk levels are medium, low, and no. No means bad and no quality risk, low means bad can be repaired, high means bad cannot be repaired, and high means bad has quality risk, etc. Defect levels can be designed according to actual needs, and are not limited to the above examples.
- the defect level of the defect in the bad picture is determined according to the bad type to which the defect belongs in the bad picture, and the size relationship between the defect size and the design size, which can be achieved in the following ways:
- the defective type of the defect in the defective image is judged, and the defect level judgment condition used for the defect in the defective image is determined; The ratio of the size and the size relationship of the set magnification are judged to obtain the judgment result; the grade defect is determined according to the judgment result.
- ADC Automatic Defect Classification
- the neural network model of the ADC it is usually necessary for the user to use the collected sample pictures to train the model (such as a neural network model), and after the training is completed and reaches After the online use standard, the trained model is used to automatically obtain bad pictures from a specific storage location (such as a shared disk dedicated to storing bad pictures output by AOI), and classify the bad pictures.
- the classified pictures can be classified according to bad types (such as The presence of defective particles or defective passivation layer fracture) is marked.
- Training a neural network model usually requires collecting enough different types of sample images, labeling the sample images by type, and then dividing the sample images into a training set and a validation set, using the training set to train the model, and using the validation set for training. After the model is verified, the user also manually judges the bad pictures in the verification set, and determines the accuracy and recall rate of the trained model based on the results of the manual judgment. After setting the value, it is determined that the model is successfully trained and can be automatically identified online. If any one does not reach the corresponding preset value, add samples for retraining and verification until both the precision and recall rate reach their respective preset values.
- the trained model After the trained model is online, it will automatically obtain the bad pictures taken by AOI from a specific storage location for identification, and output a corresponding confidence level after automatic identification of each picture.
- the confidence level > 90% can be determined as the bad classification judgment is correct. If the confidence level is > 90%, the bad picture can enter the bad positioning, labeling, and classification links; After extraction, these bad pictures are used to update and iterate the trained model to improve the algorithm's ability to identify bad pictures in the future.
- the trained model is the neural network model used online in the ADC system.
- the neural network model can be used to classify bad pictures to determine whether the bad type of bad pictures is bad particles (poor PT) or bad passivation layer fracture ( Bad PVX Open).
- the defect level judgment condition used for the defect in the defective image can be determined, and the corresponding defect level can be set for each defect type in advance Judgment condition:
- the defect type is particle defect (PT defect)
- the particle defect (PT defect) judgment condition for the defective image it is determined to use the particle defect (PT defect) judgment condition for the defective image, and the value range of the set magnification is 1.3-1.7.
- the set magnification may be 1.5.
- the conditions for determining bad particles can be:
- the defect level is determined to be poor and of good quality Risk; if the ratio of the defect size to the design size of the channel is greater than the set magnification, the defect level is determined to be bad without quality risk.
- FIG. 3 is a schematic diagram of particle defects located in the channel of a thin film transistor provided by an embodiment of the present disclosure. It is assumed that the defect in FIG. 3 belongs to PT failure through ADC, the magnification is set to 1.5, and the PT in FIG. 3 has been determined.
- the defect size of the defect is L1
- the design size of the channel of the TFT (the U-shaped area with a diagonal line in Figure 3, that is, the vertical space corresponding to the U-shaped area above the gate of the TFT, between the source and drain) is S1
- X1/S1 ⁇ 1.5 it can be determined that the defect level of the PT defect in Figure 3 is bad with quality risk
- X1/S1>1.5 it can be determined that the defect level of the PT defect in Figure 3 is bad without quality risk .
- the defect is black, and the ratio of the defect size to the design size of the intersection position is less than or equal to the set magnification, the defect is determined.
- the grade is bad with quality risk; if the ratio of the defect size to the design size of the intersection position is greater than the set magnification, the defect grade is determined to be bad without quality risk.
- FIG. 4 is a schematic diagram of particle defects located at intersections of scan lines and data lines according to an embodiment of the present disclosure.
- Fig. 4 is a PT defect, and the set magnification is 1.5.
- the defect size of the elliptical PT defect is L1
- the defect size of the circular PT defect is L2
- the design size of the intersection position is S2.
- L2 ⁇ S2 (satisfies L2/S2 ⁇ 1.5)
- L1/S2>1.5 so it can be determined
- the defect level of the oval PT defect at the intersection in FIG. 4 is bad without quality risk.
- the defect type is poor passivation layer fracture (PVX Open)
- the value range of the set magnification is 0.8 to 1.2.
- the value of the set magnification is 1.
- the conditions for the judgment of poor passivation layer fracture can be:
- the defect level is determined to be defective and repairable .
- the defect level is determined to be non-repairable.
- FIG. 5 is a schematic diagram showing that the particle defect is a poor fracture of the passivation layer provided by the embodiment of the present disclosure.
- the defect in Figure 5 belongs to poor passivation layer fracture (PVX Open) through ADC
- the magnification is set to 1
- the distance between the two data lines in Figure 5 is d
- the defect size of the oval PVX Open defect is L1
- the defect size of the circular PVX Open defect is L2.
- L1>d it can be determined that the defect level of the elliptical PT defect is not good and cannot be repaired; in Figure 5, because L2 ⁇ d, it can be determined that the circular The defect level of the PT defect is bad repairable.
- the passivation layer is usually located on the upper layer of the data line, it can be understood that the passivation layer is transparent in FIG. 5 , and the circles and ellipses in FIG. 5 indicate fractures in the passivation layer.
- the defects may also be marked with different marks for different defect levels.
- bad pictures can be separated by defect level. For example, if it is a bad picture that cannot be repaired, the label of ADC will be used; other defect levels will be relabeled. If the defect level of the defect in the bad picture is bad and repairable, it will be marked with a red round frame.
- an embodiment of the present disclosure provides a device for identifying the defect level of a bad picture.
- the device includes:
- a design size determination unit 602 configured to determine the design size of the pattern corresponding to the adjacent parts at the location of the defect according to the product model corresponding to the defective picture;
- Defect level determination unit 603 configured to determine the defect level of the defect according to the defect type to which the defect belongs, and the size relationship between the defect size and the design size; rate of influence.
- the defect size determination unit is used for:
- the maximum length of the defect in the first direction and the second direction is determined as the defect size; wherein the first direction is perpendicular to the second direction.
- the defect level determination unit 603 is used for:
- the grade defect is determined according to the judgment result.
- the bad type when the bad picture is a bad picture in the display panel, the bad type includes bad particles and bad breakage of the passivation layer.
- the defect level determination unit 603 is further configured to:
- the defect type is particle defect
- the value range of the set magnification is 1.3-1.7;
- the failure type is failure of passivation layer fracture
- the conditions for determining poor particles include:
- the defect level is determined Defect with quality risk; if the ratio of the defect size to the design size of the channel is greater than the set magnification, determine the defect level as poor without quality risk;
- the defect level is determined to be defective with quality risk; if the ratio of the defect size to the design size of the intersection position is greater than the set magnification, the defect level is determined to be Bad quality without risk.
- the conditions for determining the poor fracture of the passivation layer include:
- the defect level is bad and repairable
- the defect level is determined to be defective and irreparable.
- the defect level determination unit 603 is further configured to:
- the defects are marked with different marks for different defect grades.
- the embodiments of the present disclosure provide an apparatus for automatically identifying defect levels of bad pictures, including: at least one processor, and
- a memory connected to the at least one processor
- the memory stores instructions executable by the at least one processor, and the at least one processor executes the above-mentioned method for identifying defect levels of bad pictures by executing the instructions stored in the memory.
- an embodiment of the present disclosure also provides a readable storage medium, including:
- the memory is used to store instructions, and when the instructions are executed by the processor, make the apparatus including the readable storage medium complete the above-mentioned method for identifying a defect level of a bad picture.
- embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, CD-ROM, optical storage, and the like.
- Embodiments of the present disclosure are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flows of the flowcharts and/or the block or blocks of the block diagrams.
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Abstract
Description
Claims (11)
- 一种不良图片缺陷等级识别的方法,其中,包括:从不良图片中确定出缺陷的缺陷尺寸;根据所述不良图片对应的产品型号,确定所述缺陷所在位置相邻部件对应的图案的设计尺寸;根据所述缺陷所属的不良类型,以及所述缺陷尺寸与所述设计尺寸大小关系,确定所述缺陷的缺陷等级;其中,所述缺陷等级为缺陷对产品良率的影响程度。
- 如权利要求1所述的方法,其中,从不良图片中确定出缺陷的缺陷尺寸,包括:将所述缺陷在第一方向和第二方向中的最大长度,确定为所述缺陷尺寸;其中,所述第一方向垂直于所述第二方向。
- 如权利要求1所述的方法,其中,根据所述缺陷所属的不良类型,以及所述缺陷尺寸与所述设计尺寸的大小关系,确定所述缺陷的缺陷等级,包括:通过缺陷自动化分类系统中的神经网络模型判断出所述缺陷所属的不良类型,并确定对所述缺陷使用的缺陷等级判定条件;用所述判定条件,对所述缺陷尺寸与所述设计尺寸的比值和设定倍率的大小关系进行判定,获得判定结果;根据所述判定结果确定所述等级缺陷。
- 如权利要求1-3任一项所述的方法,其特征在于,所述不良图片为显示面板中的不良图片时,所述不良类型包括颗粒不良、钝化层断裂不良。
- 如权利要求4所述的方法,其中,通过缺陷自动化分类系统中的神经网络模型判断出所述缺陷所属的所述不良类型,并确定对所述缺陷使用的缺陷等级判定条件,包括:当所述不良类型为颗粒不良时,确定对所述不良图片使用颗粒不良判定 条件,所述设定倍率的取值范围为1.3~1.7;当所述不良类型为钝化层断裂不良时,确定对所述不良图片使用钝化层断裂不良判定条件,所述设定倍率的取值范围为0.8~1.2。
- 如权利要求5所述的方法,其中,所述颗粒不良判定条件,包括:当所述缺陷所在位置周围的图案为薄膜晶体管的沟道对应的图案时,若所述缺陷尺寸与所述沟道的设计尺寸的比值小于或等于所述设定倍率,则确定所述缺陷等级为不良有品质风险;若所述缺陷尺寸与所述沟道的比值大于所述设定倍率,则确定所述缺陷等级为不良无品质风险;当所述缺陷所在位置周围的图案为所述显示面板的扫描线和数据线的交叉位置对应的图案时,若所述缺陷为黑色,且所述缺陷尺寸与所述交叉位置的设计尺寸的比值小于或等于所述设定倍率,则确定所述缺陷等级为不良有品质风险;若所述缺陷尺寸与所述交叉位置的设计尺寸的比值大于所述设定倍率,则确定所述缺陷等级为不良无品质风险。
- 如权利要求5所述的方法,其中,所述钝化层断裂不良判定条件,包括:当所述缺陷所在位置周围的图案为所述显示面板中数据线对应的图案时,若所述缺陷尺寸与相邻两个数据线之间的设计间距的比值小于或等于所述设定倍率,则确定所述缺陷等级为不良可维修;若所述缺陷尺寸与所述相邻两个数据线之间的设计间距的比值大于所述设定倍率,则确定所述缺陷等级为不良不可维修。
- 如权利要求1-3任一项所述的方法,其中,确定所述不良图片的缺陷等级后,还包括:对不同缺陷等级用不同的标记对所述缺陷进行标注。
- 一种不良图片缺陷等级识别的装置,其中,包括:缺陷尺寸确定单元,用于从不良图片中确定出缺陷的缺陷尺寸;设计尺寸确定单元,用于根据所述不良图片对应的产品型号,确定所述缺陷所在位置相邻部件对应的图案的设计尺寸;缺陷等级确定单元,用于根据所述缺陷所属的不良类型,以及所述缺陷尺寸与所述设计尺寸的大小关系,确定所述缺陷的缺陷等级;其中,所述缺陷等级为缺陷对产品良率的影响程度。
- 一种不良图片缺陷等级自动识别的装置,其中,包括:至少一个处理器,以及与所述至少一个处理器连接的存储器;其中,所述存储器存储有可被所述至少一个处理器执行的指令,所述至少一个处理器通过执行所述存储器存储的指令,执行如权利要求1-8任一项所述的方法。
- 一种可读存储介质,其中,包括存储器,所述存储器用于存储指令,当所述指令被处理器执行时,使得包括所述可读存储介质的装置完成如权利要求1~8中任一项所述的方法。
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US20190086340A1 (en) * | 2017-09-18 | 2019-03-21 | Elite Semiconductor Inc. | Smart defect calibration system and the method thereof |
CN109741324A (zh) * | 2019-01-10 | 2019-05-10 | 惠科股份有限公司 | 一种检测方法、检测装置及终端设备 |
CN110690133A (zh) * | 2019-09-05 | 2020-01-14 | 长江存储科技有限责任公司 | 半导体结构的检测方法及其检测装置 |
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US20190086340A1 (en) * | 2017-09-18 | 2019-03-21 | Elite Semiconductor Inc. | Smart defect calibration system and the method thereof |
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CN109741324A (zh) * | 2019-01-10 | 2019-05-10 | 惠科股份有限公司 | 一种检测方法、检测装置及终端设备 |
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