CN107529280A - The method and device that a kind of Foot print are established - Google Patents

Abstract

The invention discloses a method for establishing a Foot print, comprising: acquiring the Air Gap value of two adjacent pads; judging whether the Air Gap value is smaller than a preset value; Establish routekeepout/top to prompt DRC when pouring copper between the two adjacent pads. It can be seen that the method for establishing a Foot print provided by the embodiment of the present invention is to establish routekeepout/top between two pads with too small Air gap, and when copper is poured between these two pads, DRC will be prompted, so There will be no problem that pads with too small air gaps are connected together and covered with copper, which makes it difficult to identify the pads. At the same time, PCB engineers do not need to measure whether the parts are fine pitch every time during wiring, which also reduces the time for checking errors.

Description

Method and device for establishing Foot print

technical field

The present invention relates to the field of PCB design, more specifically, to a method and device for establishing Foot print.

Background technique

With the development of the information industry, the progress of original packaging, high-density circuit board production and system integration will promote the overall reduction of the size of electronic products, and the application of Fine pitch (fine pitch) parts in PCB is becoming more and more frequent. . In addition to the requirements for factory-side technology, PCB engineers must ensure high-precision visual recognition, a small error range, and ensure recognition accuracy. Therefore, for Fine Pitch ICs (integrated circuits), if the Air Gap (air gap) between Pads is less than 8mil, it is required that several pins cannot be connected together to lay copper, that is, the part between adjacent pins It cannot be covered with copper, otherwise it will be difficult for the factory to identify the pins when loading the parts, so it is difficult to identify the position of this part of the pad, which will lead to the occurrence of part deviation.

However, when designing, it is necessary to artificially avoid laying copper on several pins together, so the probability of error is high.

Therefore, how to improve the probability of avoiding the part between adjacent pins being covered with copper is a problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide a method and device for creating a Foot print, so as to increase the probability of preventing parts between adjacent pins from being covered with copper.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

A method for establishing Foot print, including:

Get the Air Gap value of two adjacent pads;

Judging whether the Air Gap value is less than a preset value;

If yes, create a routekeepout/top between the two adjacent pads, so as to prompt the DRC when pouring copper between the two adjacent pads.

Wherein, after establishing routekeepout/top between the pads, it also includes:

Set the display mode of the DRC.

Wherein, the display mode includes size and font color.

Wherein, after using the routekeepout/top to prompt the DRC, it also includes:

Record the information prompting the DRC.

A device established by Foot print, comprising:

The Air Gap value acquisition module is used to acquire the Air Gap values of two adjacent pads;

A judging module, configured to judge whether the Air Gap value is less than a preset value;

The routekeepout/top establishment module is used to establish routekeepout/top between the two adjacent pads when the Air Gap value is less than a preset value, so that when copper is poured between the two adjacent pads Prompt DRC.

Among them, also include:

The DRC setting module is used for setting the display mode of the DRC after the routek eepout/top is established between the pads.

Wherein, the display mode includes size and font color.

Among them, also include:

The recording module is configured to record the information for prompting the DRC after using the routekeepout/top to prompt the DRC.

It can be seen from the above scheme that a method for establishing a Foot print provided by the embodiment of the present invention includes: acquiring the Air Gap values of two adjacent pads; judging whether the Air Gap values are less than a preset value; A routekeepout/top is established between two adjacent pads, so as to prompt DRC when copper is poured between the two adjacent pads.

It can be seen that the method for establishing a Foot print provided by the embodiment of the present invention is to establish routekeepout/top between two pads with too small Air gap, and when copper is poured between these two pads, DRC will be prompted , so there will be no problem that pads with too small air gaps are connected together and covered with copper, which makes it difficult to identify the pads. At the same time, PCB engineers do not need to measure whether the parts are fine pitch every time during wiring, which also reduces the time for checking errors.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the method flowchart that a kind of Foot print that the embodiment of the present invention discloses is established;

Fig. 2 is a kind of DRC prompting effect diagram disclosed by the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a foot print establishment device disclosed in an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The embodiment of the present invention discloses a method and a device for establishing a Foot print, so as to increase the probability of preventing parts between adjacent pins from being covered with copper.

Referring to FIG. 1 and FIG. 2, a method for establishing a Foot print provided by an embodiment of the present invention specifically includes:

S101, acquiring the Air Gap values of two adjacent pads;

For Fine pitch (fine pitch) parts, if two adjacent pads are connected together and covered with copper, it will be difficult to identify the two adjacent pads. In order to ensure the degree of recognition, if the distance between the two pads If it is too small, it is necessary to avoid pouring copper together, but to pour copper on each pad separately. In order to accurately avoid copper pouring between the two pads in this case, this solution is between the two pads. Add routekeepout/top.

Specifically, first obtain the Air Gap (air gap) between two adjacent pads to determine whether it is necessary to avoid pouring copper between the two pads.

S102, judging whether the Air Gap value is smaller than a preset value;

Specifically, compare the obtained Air Gap value with the preset value. The preset value can be set to 8mil. When the obtained Air Gap value is less than 8mil, it means that adjacent pads need to be prevented from being connected to copper.

S103, if yes, establish a routekeepout/top between the two adjacent pads, so as to prompt the DRC when pouring copper between the two adjacent pads.

Specifically, when it is determined that the Air Gap value is less than the preset value, then in order to accurately avoid connecting adjacent pads together with copper pouring, that is, to avoid copper pouring in the area between two adjacent pads, between two adjacent pads Establish routekeepout/top between pads, refer to Figure 2, when the engineer mistakenly pours copper in the area between two adjacent pads due to unclear rules or operational errors, it will report a DRC in the form of KS to remind the engineer of the wrong operation .

It can be seen that the method for establishing a Foot print provided by the embodiment of the present invention is to establish routekeepout/top between two pads with too small Air gap, and when copper is poured between these two pads, DRC will be prompted, so There will be no problem that pads with too small air gaps are connected together to pour copper, making it difficult to identify the pads. At the same time, PCB engineers do not need to measure whether the parts are fine pitch every time during wiring, which also reduces the time for checking errors.

In order to make the prompt method clearer and enable engineers to clearly confirm copper pouring errors, the embodiment of the present invention provides a specific method for establishing Foot print. Based on the above-mentioned embodiment, the embodiment of the present invention establishes routekeepout/ After top, also includes:

Set the display mode of the DRC.

Specifically, the display mode of the DRC can be set, for example, the size of the prompt form of the DRC can be increased, or the text color of the error message can be changed to an eye-catching color.

In order to facilitate checking whether the copper pouring is correct again after the copper pouring, the information prompting the DRC may be recorded after the routekeepout/top is used to prompt the DRC.

Specifically, after the DRC is prompted, a log file can be generated to record the information of each DRC, so that in the follow-up inspection, the time and location of the wrong copper pour can be checked. At the same time, the log information can be used to summarize the location of frequent wrong copper pours. Such locations are treated separately.

The following is an apparatus for establishing a Footprint provided by an embodiment of the present invention. The apparatus for establishing a Footprint described below and the method for establishing a Footprint described above may be referred to each other.

Referring to Fig. 3, a foot print establishment device provided by an embodiment of the present invention includes:

Air Gap value obtaining module 201, for obtaining the Air Gap value of adjacent two pads;

Specifically, the Air Gap value acquisition module 201 first acquires the Air Gap (air gap) between two adjacent pads, so as to determine whether it is necessary to avoid pouring copper between the two pads.

A judging module 202, configured to judge whether the Air Gap value is less than a preset value;

Specifically, the judging module 202 compares the acquired Air Gap value with a preset value, and the preset value can be set to 8mil. When the acquired Air Gap value is less than 8mil, it means that adjacent pads need to be avoided from being connected together. copper clad.

The routekeepout/top establishment module 203 is used for establishing routekeepout/top between the two adjacent pads when the Air Gap value is less than a preset value, so as to cover copper between the two adjacent pads DRC is prompted.

Specifically, when it is determined that the Air Gap value is less than the preset value, then in order to accurately avoid connecting adjacent pads with copper pouring together, that is, to avoid copper pouring in the area between two adjacent pads, the routekeepout/top establishment module 203 Establish routekeepout/top between two adjacent pads, so that when the engineer mistakenly pours copper in the area between two adjacent pads due to unclear rules or operating errors, a DRC in the form of KS will be reported. Alert engineers to operating errors.

It can be seen that in the device for establishing a Foot print provided by the embodiment of the present invention, the routekeepout/top establishment module 203 establishes routekeepout/top between two pads with too small Air gap. When copper is poured between these two pads, DRC will be prompted, so there will be no problem that pads with too small air gaps are connected together and covered with copper, making it difficult to identify the pads. At the same time, PCB engineers do not need to measure whether the parts are fine pitch every time when wiring, which also reduces inspection errors. time.

In order to make the prompt method clearer and enable engineers to clearly confirm copper pouring errors, the embodiment of the present invention provides a specific device for establishing Foot print. Based on the above-mentioned embodiment, the embodiment of the present invention establishes routekeepout/ After top, also include:

Set the display mode of the DRC.

Specifically, the display mode of the DRC can be set, for example, the size of the prompt form of the DRC can be increased, or the text color of the error message can be changed to an eye-catching color.

In order to facilitate checking whether the copper pouring is correct again after the copper pouring, the information prompting the DRC may be recorded after the routekeepout/top is used to prompt the DRC.

Specifically, after the DRC is prompted, a log file can be generated to record the information of each DRC, so that in the follow-up inspection, the time and location of the wrong copper pour can be checked. At the same time, the log information can be used to summarize the location of frequent wrong copper pours. Such locations are treated separately.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. a kind of method that Foot print are established, it is characterised in that including：

Obtain two neighboring pad Air Gap values；

Judge whether the Air Gap values are less than preset value；

If so, then establish routekeepout/top between the two neighboring pad, so as to the two neighboring pad it Between prompt DRC when covering copper.

2. according to the method for claim 1, it is characterised in that established between the pad routekeepout/top it Afterwards, in addition to：

The display mode of the DRC is set.

3. according to the method for claim 2, it is characterised in that the display mode includes size and font color.

4. according to the method for claim 2, it is characterised in that after routekeepout/top promptings DRC, Also include：

Record prompts the information of the DRC.

A kind of 5. device that Foot print are established, it is characterised in that including：

Air Gap value acquisition modules, for obtaining two neighboring pad Air Gap values；

Judge module, for judging whether the Air Gap values are less than preset value；

Routekeepout/top establishes module, for when the Air Gap values are less than preset value, then described two neighboring Routekeepout/top is established between pad, to prompt DRC when covering copper between the two neighboring pad.

6. device according to claim 5, it is characterised in that also include：

DRC setup modules, after establishing routek eepout/top between the pad, the display of the DRC is set Mode.

7. device according to claim 6, it is characterised in that the display mode includes size and font color.

8. device according to claim 5, it is characterised in that also include：

Logging modle, after using routekeepout/top promptings DRC, record prompts the information of the DRC.