Thread

Introduction
Screenshots
License
Download
Userinterface
Function Index
White Papers
Community
Contact

Use your OpenID:

getopenID

no help

Saving of single cells - problem with svg

by anonymous - 18 Sep 2009, 14:28 CEST

Hi,

I'd like to know if it is possible to save single cells into a own new file. Because if I want to use it in for example photo shop by saving it as *.svg, nothing can be seen if the origin file in *.gds contains more cells.
So I need a file with that single cell, maybe by copying it.

Thanks a lot in advance!

by anonymous - 18 Sep 2009, 14:42 CEST

I forgot to say that I have the basic version of the layouteditor. i hope a solution is still possible

by Juergen Thies - 18 Sep 2009, 15:14 CEST

That is possible:

With the full version you can use the "Utilities/Global Tools/Extract Current Cell" feature.

With the basic version select all other cells and delete them.

Afterwards use "Save as" to save it to SVG file format.

The SVG format is a vector file format. If you want to use it in photo shop it may be usefull to have a raster graphic. In that case you can simple use (independent of the version) the 'Screenshot' feature or 'Save To' a raster format like JPG, BMP, PNG, ... Here always only the visible cell will be saved. The 'Screenshot' will save the current view, 'Save As' to raster file format will save the complete visible cell. Setup the resolution to a preferred value before exporting it. (Setup/Fileformat/Pixel)

by anonymous - 21 Sep 2009, 9:36 CEST

My problem when deleting all other cells is, that the cell I want to save consits and is build of other cells.

by Juergen Thies - 21 Sep 2009, 9:57 CEST

"Utilities/Global Tools/Extract Current Cell" feature in the full version will detect this and only delete the non needed cell.

In the basic version "cell/select cell(list)" feature will show you the dependence of the cells. Cells marked with a '(*)' will not be needed in any other cell.

by anonymous - 21 Sep 2009, 10:16 CEST

I'm sorry to bother you again, but in my file all cells are marked with a star (waht cannot be the case), but when deleting them, the cell I want to save is, as I ecpected, empty.
I can save the cell in svg (because I need it in this forma, unforunately), but when opening it with e.g. inkscape, half of the contens of the cell is missing. A problem of inkscpa eor the layouteditor? Because other easy test-cells are shown correctly.

by Juergen Thies - 21 Sep 2009, 10:36 CEST

Cad files like GDSII don't have informations on foreground and background. Shapes are normally displayed with a non solid fill style, so all shapes are visible. Inkscape normally displays all shapes with a sold fill style. So shapes in the background can be invisible. Changing the fill style or moving some shapes in the background will show the missing shapes.
In the cell list you can go into tree( like in any file browser) Are the subcells also marked with a star? If so, please send me a sample file for debugging. I never hab such behaviour. email: info at layouteditor.net

by anonymous - 21 Sep 2009, 11:18 CEST

Ok, in the tree just the top cell is marked with a star, subcells not. I come closer to the end, the only thing is, that contact pins and other shapes in my layout are shown correctly in svg but for whatever reason not my transistors. Anything else is shown, even structures of the same size and layer, but not the source/drain.
Thanks for your help!

by anonymous - 22 Sep 2009, 9:45 CEST

I've been trying and trying but have no clue, why some shapes are shown and others of the same layer not. Can you please give me a hint where to find the reason?

by Juergen Thies - 24 Sep 2009, 12:27 CEST

Are the shapes not displayed by a SVG viewer or not saved by the LayoutEditor?
If you create a SVG file with only the problematic shapes, you can check this. There are plenty of incomplete SVG viewers on the market. Some do not display hierarchie, other did not support some spezial shapes or display only a part of the SVG file. Try to flatten the design before saving or move the design, if one egde of the design is missing.

Please log in to post!

The LayoutEditor™ is a program to design and edit layouts for MEMS/IC fabrication and CMOS IC design .Designing these layouts require a high precision. In IC design a sufficient resolution and a possibility of a high scaling is required. The resolution of the LayoutEditor can be set in a wide range and is normally set to 1 nano meter. A higher resolution makes no sense due to atomar structures. With this resolution the LayoutEditor can draw elements up to 4 meters. In many IC design houses this is enough for IC/MEMS which extend usually less than 0.1 meters. The productions of MEMS/IC is done in many layers. For each of these physical CAD layers a belonging layer had to exist in the drawing. Additional logical layers are required for describing/naming purpose. So a lot of layers are needed. By default the LayoutEditor is limited to 128 layers. But it can easily be adjusted, if more layers are required. IC Designs often contain a plenty of repeating structures. Essential for micro fabrication of these designs is therefor a hierarchical design. This means, that the complete repeating structure only exists once in a single cell. These cell is then referred multiple times in the main drawing.
Beside the above mems packaging mentioned IC design fundaments it is important to have sophisticated functions to handle all drawing elements. The layout handler has all required functions: all basic design functions, all angle elements, boolean operations, macros, fontgenerator, design rule checker, mems tools, supported format: GDSII, DXF, OASIS, CIF. If you still missing a function, you are free to write a feature request

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -