CN107967371A - Delete the method and device of excess metal line on Net - Google Patents
Delete the method and device of excess metal line on Net Download PDFInfo
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- CN107967371A CN107967371A CN201610908846.4A CN201610908846A CN107967371A CN 107967371 A CN107967371 A CN 107967371A CN 201610908846 A CN201610908846 A CN 201610908846A CN 107967371 A CN107967371 A CN 107967371A
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- metal
- net
- decorative layer
- polygon
- minimum area
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/39—Circuit design at the physical level
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- Theoretical Computer Science (AREA)
- Evolutionary Computation (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
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Abstract
The present invention provides a kind of method and device of excess metal line on deletion Net.The described method includes：Graph data stream file is parsed, establishes the data type for representing figure；It is polygon by the path integration in the data type of the expression figure；Merge the same layer metal for having been converted into polygon, the same layer metal polygon set after being merged；Find out Net all in the same layer metal polygon set；Based on the accurate premises of DRC and LVS, metal unnecessary in all Net is deleted.The present invention need not be by external tool, it is not necessary to artificially checks and operates, can rapidly and accurately delete excess metal line on Net, so as to improve efficiency and strengthen reliability.
Description
Technical field
The present invention relates to the method and dress of excess metal line in technical field of integrated circuits, more particularly to a kind of deletion Net
Put.
Background technology
With the development of integrated circuit, chip size is less and less, the dead resistance capacitances pair of Net (circuit node) above
The performance of whole chip influences increasing, but domain engineer is in drawing processes, generally will not be by gold unnecessary above Net
Category deletes, because the metal having more can also may separately use it for anything else., it is necessary to which metal is first pressed grid during particularly to 7nm processing procedures
Formula is paved with removes picture circuit again, this, which is resulted in, can almost carry unnecessary metal above each Net in the domain eventually formed, this
When if it is desired to unnecessary metal is removed, it is necessary to take a significant amount of time, it is also possible to can be because artificially delete and cause DRC by mistake
(Design Rule Check, design rule check) or LVS be (Layout Versus Schematics, domain and schematic diagram
Consistency check) validation failure.In traditional layout design engineering, in view of the above problems, can only by artificially checking and
The method deleted manually solves.
In the implementation of the present invention, inventor has found at least to have the following technical problems in the prior art：
In excess metal line on deleting Net, it is necessary to by external tool, at the same must by artificially checking and operating,
Especially when layout data amount is very big, whole process takes too long, easily produces operation error.
The content of the invention
The method and device of excess metal line on deletion Net provided by the invention, can ensure that DRC and LVS is accurate
Under the premise of, excess metal line on Net is rapidly and accurately deleted, so as to improve efficiency and strengthen reliability.
In a first aspect, the method that the present invention provides excess metal line on a kind of deletion Net, including：
GDS file is parsed, establishes the data type for representing figure；
It is polygon by the path integration in the data type of the expression figure；
Merge the same layer metal for having been converted into polygon, the same layer metal polygon set after being merged；
Find out Net all in the same layer metal polygon set；
Based on the accurate premises of DRC and LVS, metal unnecessary in all Net is deleted.
Alternatively, it is described to find out Net all in the same layer metal polygon set and include：Find out the same layer metal
All via layers for covering metal layer in polygon set.
Alternatively, described to be based on the accurate premises of DRC and LVS, deleting metal unnecessary in all Net includes：Each
Excess metal is directly deleted on the original metals of Net or decorative layer is covered at the excess metal for needing to delete, and shows to cover
The metal of decorative layer has been deleted.
Alternatively, the excess metal of directly being deleted on the original metals of each Net includes：
Minimum area inspection is done to deleting the residual metallic after excess metal；
If residual metallic is unsatisfactory for minimum area inspection, by recursive operation, the area of deleted metal is gradually reduced,
Until residual metallic meets minimum area inspection.
Alternatively, it is described to need to cover decorative layer at the excess metal deleted, show to cover the metal of decorative layer
Being deleted includes：
Minimum area inspection is done to the metal for covering decorative layer；
If the metal for covering decorative layer is unsatisfactory for minimum area inspection, by recursive operation, decorative layer is gradually added,
Metal until covering decorative layer meets minimum area inspection.
Second aspect, the present invention provide a kind of device of excess metal line on deletion Net, including：
Resolution unit, for parsing GDS file, and establishes the data type for representing figure；
Converting unit, for being polygon by the path integration in the data type of the expression figure；
Combining unit, the same layer metal of polygon, the same layer metal polygon after being merged are had been converted into for merging
Set；
Unit is found, for finding out Net all in the same layer metal polygon set；
Unit is deleted, for based on the accurate premises of DRC and LVS, deleting metal unnecessary in all Net.
Alternatively, the searching unit, all in the same layer metal polygon set metal is covered for finding out
The via layer of layer.
Alternatively, the deletion unit, for directly deleting excess metal on the original metals of each Net or needing
Decorative layer is covered at the excess metal to be deleted, shows that the metal for covering decorative layer has been deleted.
Alternatively, the deletion unit, is used for：
Minimum area inspection is done to deleting the residual metallic after excess metal；
If residual metallic is unsatisfactory for minimum area inspection, by recursive operation, the area of deleted metal is gradually reduced,
Until residual metallic meets minimum area inspection.
Alternatively, the deletion unit, is used for：
Minimum area inspection is done to the metal for covering decorative layer；
If the metal for covering decorative layer is unsatisfactory for minimum area inspection, by recursive operation, decorative layer is gradually added,
Metal until covering decorative layer meets minimum area inspection.
The method and device of excess metal line on deletion Net provided in an embodiment of the present invention, by parsing graphics streams
File, establishes the data type for representing figure；It is polygon by the path integration in the data type of the expression figure；Merge
The same layer metal of polygon is had been converted into, the same layer metal polygon set after being merged；It is polygon to find out the same layer metal
All Net in shape set；Based on the accurate premises of DRC and LVS, metal unnecessary in all Net is deleted.The present invention need not borrow
Help external tool, it is not necessary to artificially check and operate, can rapidly and accurately delete excess metal line on Net, so as to improve effect
Rate simultaneously strengthens reliability.
Brief description of the drawings
Fig. 1 is the flow chart that one embodiment of the invention deletes the method for excess metal line on Net；
Fig. 2 is the flow chart that another embodiment of the present invention deletes the method for excess metal line on Net；
Fig. 3 is the flow chart that another embodiment of the present invention deletes the method for excess metal line on Net；
Fig. 4 is the flow chart that another embodiment of the present invention deletes the method for excess metal line on Net；
Fig. 5 is the structure diagram that one embodiment of the invention deletes excess metal line apparatus on Net.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
The present invention provides excess metal line method on a kind of deletion Net, as shown in Figure 1, the described method includes：
S11, parsing GDS (graphics streams, Graphic Data Stream) file, establish the data class for representing figure
Type；
S12, by it is described expression figure data type in path integration be polygon；
S13, merging have been converted into the same layer metal of polygon, the same layer metal polygon set after being merged；
S14, find out Net all in the same layer metal polygon set；
Wherein, the definition of Net is the via layers for covering metal layer all in same layer metal polygon set.
S15, based on the accurate premises of DRC and LVS, delete metal unnecessary in all Net.
Wherein, deleting the method for metal unnecessary in all Net has two kinds：One kind is on the original metals of each Net
Directly delete excess metal；Another kind is that decorative layer is covered at the excess metal for needing to delete, and shows to cover decorative layer
Metal has been deleted.
Specifically, excess metal is directly deleted on the original metals of each Net includes：
Such as Fig. 2, one layer of very big metal M1 of area has been capped by taking NetB as an example, above NetB, has directly been deleted on NetB
After the M1 in face, the bold portion of NetB in Fig. 3 is obtained, that is, deletes the residual metallic after excess metal M1；
Minimum area inspection is done to the residual metallic of NetB in Fig. 3, meets that the residual metallic area of minimum area inspection should
This reaches the dotted portion in Fig. 3, it is clear that the real surplus metallic area of NetB is unsatisfactory for minimum area inspection in Fig. 3, then leads to
Recursive operation is crossed, is gradually reduced the area of deleted metal, the dotted portion area in Fig. 3 is reached until residual metallic area,
That is, the NetB in Fig. 4, meet minimum area inspection at this time.
Specifically, decorative layer is covered at the excess metal for needing to delete, shows that the metal for covering decorative layer is deleted
Except including：
Such as Fig. 2, one layer of very big metal M0 of area is capped by taking NetA as an example, above NetA, has been covered on metal M0
Decorative layer (cut layers) C1, the left part for showing to be capped the metal M0 of decorative layer C1 above NetA have been deleted；
Minimum area inspection is done to the metal M0 for covering decorative layer C1, on inspection, finds the area of residual metallic M0 still
It is so excessive, minimum area inspection is unsatisfactory for, then by recursive operation, continues to add decorative layer C2, such as the NetA in Fig. 3, so as to
The area of residual metallic M0 is set to meet minimum area inspection；
But after with the addition of decorative layer C2, the residual area for the metal M0 being capped above NetA is too small, is unsatisfactory for minimal face
Product checks, then by recursive operation, continues to add decorative layer C3, such as Fig. 3；
Finally, the metal M0 for covering decorative layer C1 and C3 meets minimum area inspection, as shown in Figure 4.
The method of excess metal line, by parsing graph data stream file, builds on deletion Net provided in an embodiment of the present invention
The vertical data type for representing figure；It is polygon by the path integration in the data type of the expression figure；Merging has been changed
For the same layer metal of polygon, the same layer metal polygon set after being merged；Find out the same layer metal polygon set
In all Net；Based on the accurate premises of DRC and LVS, metal unnecessary in all Net is deleted.The present invention need not be by outside
Instrument, it is not necessary to artificially check and operate, can rapidly and accurately delete excess metal line on Net, so as to improve efficiency and increase
Strong reliability.
The embodiment of the present invention also provides a kind of device of excess metal line on deletion Net, as shown in figure 5, described device bag
Include：
Resolution unit 101, for parsing GDS file, and establishes the data type for representing figure；
Converting unit 102, for being polygon by the path integration in the data type of the expression figure；
Combining unit 103, the same layer metal of polygon is had been converted into for merging, and the same layer metal after being merged is polygon
Shape set；
Unit 104 is found, for finding out Net all in the same layer metal polygon set；
Unit 105 is deleted, for based on the accurate premises of DRC and LVS, deleting metal unnecessary in all Net.
The device of excess metal line, by parsing graph data stream file, builds on deletion Net provided in an embodiment of the present invention
The vertical data type for representing figure；It is polygon by the path integration in the data type of the expression figure；Merging has been changed
For the same layer metal of polygon, the same layer metal polygon set after being merged；Find out the same layer metal polygon set
In all Net；Based on the accurate premises of DRC and LVS, metal unnecessary in all Net is deleted.The present invention need not be by outside
Instrument, it is not necessary to artificially check and operate, can rapidly and accurately delete excess metal line on Net, so as to improve efficiency and increase
Strong reliability.
Alternatively, the searching unit 104, all in the same layer metal polygon set gold is covered for finding out
Belong to the via layer of layer.
Alternatively, it is described deletion unit 105, on the original metals of each Net directly deletion excess metal or
Decorative layer is covered at the excess metal for needing to delete, shows that the metal for covering decorative layer has been deleted.
Alternatively, the deletion unit 105, is used for：
Minimum area inspection is done to deleting the residual metallic after excess metal；
If residual metallic is unsatisfactory for minimum area inspection, by recursive operation, the area of deleted metal is gradually reduced,
Until residual metallic meets minimum area inspection.
Alternatively, the deletion unit 105, is used for：
Minimum area inspection is done to the metal for covering decorative layer；
If the metal for covering decorative layer is unsatisfactory for minimum area inspection, by recursive operation, decorative layer is gradually added,
Metal until covering decorative layer meets minimum area inspection.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to scope of the claims.
Claims (10)
1. a kind of method of excess metal line on deletion Net, it is characterised in that including：
Graphics streams GDS file is parsed, establishes the data type for representing figure；
It is polygon by the path integration in the data type of the expression figure；
Merge the same layer metal for having been converted into polygon, the same layer metal polygon set after being merged；
Find out Net all in the same layer metal polygon set；
Based on the accurate premises of DRC and LVS, metal unnecessary in all Net is deleted.
2. according to the method described in claim 1, it is characterized in that, described find out in the same layer metal polygon set is owned
Net include：Find out the via layer for covering metal layer all in the same layer metal polygon set.
3. according to the method described in claim 1, it is characterized in that, described be based on the accurate premises of DRC and LVS, deletion is all
Unnecessary metal includes in Net：Excess metal or unnecessary needing to delete directly is deleted on the original metals of each Net
Decorative layer is covered at metal, shows that the metal for covering decorative layer has been deleted.
4. according to the method described in claim 3, it is characterized in that, it is described on the original metals of each Net directly delete it is more
Remaining metal includes：
Minimum area inspection is done to deleting the residual metallic after excess metal；
If residual metallic is unsatisfactory for minimum area inspection, by recursive operation, the area of deleted metal is gradually reduced, until
Residual metallic meets minimum area inspection.
5. according to the method described in claim 3, it is characterized in that, described cover modification at the excess metal for needing to delete
Layer, showing that the metal for covering decorative layer is deleted includes：
Minimum area inspection is done to the metal for covering decorative layer；
If the metal for covering decorative layer is unsatisfactory for minimum area inspection, by recursive operation, decorative layer is gradually added, until
The metal for covering decorative layer meets minimum area inspection.
A kind of 6. device of excess metal line on deletion Net, it is characterised in that including：
Resolution unit, for parsing GDS file, and establishes the data type for representing figure；
Converting unit, for being polygon by the path integration in the data type of the expression figure；
Combining unit, the same layer metal of polygon, the same layer metal polygon set after being merged are had been converted into for merging；
Unit is found, for finding out Net all in the same layer metal polygon set；
Unit is deleted, for based on the accurate premises of DRC and LVS, deleting metal unnecessary in all Net.
7. device according to claim 6, it is characterised in that the searching unit is more for finding out the same layer metal
All via layers for covering metal layer in the shape set of side.
8. device according to claim 6, it is characterised in that the deletion unit, in the original metals of each Net
It is upper directly to delete excess metal or decorative layer is covered at the excess metal for needing to delete, show to cover the metal of decorative layer
It has been deleted.
9. device according to claim 8, it is characterised in that the deletion unit, is used for：
Minimum area inspection is done to deleting the residual metallic after excess metal；
If residual metallic is unsatisfactory for minimum area inspection, by recursive operation, the area of deleted metal is gradually reduced, until
Residual metallic meets minimum area inspection.
10. device according to claim 8, it is characterised in that the deletion unit, is used for：
Minimum area inspection is done to the metal for covering decorative layer；
If the metal for covering decorative layer is unsatisfactory for minimum area inspection, by recursive operation, decorative layer is gradually added, until
The metal for covering decorative layer meets minimum area inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908846.4A CN107967371B (en) | 2016-10-18 | 2016-10-18 | Method and device for deleting redundant metal wires on Net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610908846.4A CN107967371B (en) | 2016-10-18 | 2016-10-18 | Method and device for deleting redundant metal wires on Net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107967371A true CN107967371A (en) | 2018-04-27 |
| CN107967371B CN107967371B (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610908846.4A Active CN107967371B (en) | 2016-10-18 | 2016-10-18 | Method and device for deleting redundant metal wires on Net |
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Cited By (1)
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| CN109558684A (en) * | 2018-12-04 | 2019-04-02 | 珠海市微半导体有限公司 | A kind of DRC processing method for deleting Net metal connecting line |
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| CN107967371B (en) | 2021-02-23 |
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