Source code for kqcircuits.chips.daisy_woven

# This code is part of KQCircuits
# Copyright (C) 2021 IQM Finland Oy
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
# version.
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# ( IQM welcomes contributions to the code. Please see our contribution agreements
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from kqcircuits.chips.chip import Chip
from kqcircuits.elements.element import Element
from kqcircuits.pya_resolver import pya
from kqcircuits.util.parameters import Param, pdt, add_parameters_from

[docs]@add_parameters_from(Chip, frames_enabled=[0, 1]) class DaisyWoven(Chip): """Base PCell declaration for a Daisy Woven chip. Includes texts in pixel corners, dicing edge, launchers and manually-drawn daisy pattern. No input parameters on this class. """ name_chip = Param(pdt.TypeString, "Name of the chip", "DC")
[docs] def build(self): self._produce_daisy_face("Daisy_woven")
def _produce_daisy_face(self, cell_name): # first create chip frame to change polarity of manual drawing super().produce_structures() # import daisy bottom cell daisy_cell = Element.create_cell_from_shape(self.layout, cell_name) # copy features for both faces for face_id in [0, 1]: box = pya.DPolygon(self.get_box(face_id)) # create box x_min = min(, x_max = max(, y_min = min(, y_max = max(, # shorthand notation origin_offset_x = 1e3 * (x_max - x_min) / 2. origin_offset_y = 1e3 * (y_max - y_min) / 2. chip_region = pya.Region([box.to_itype(self.layout.dbu)]) # this is already the shape of the box # Using a static file, so use static layer indices daisy_shapes_base_metal_gap_wo_grid = daisy_cell.shapes(self.layout.layer(11 + face_id * 30, 1)) daisy_shapes_underbump_metallization = daisy_cell.shapes(self.layout.layer(32 + face_id * 30, 4)) daisy_shapes_indium_bump = daisy_cell.shapes(self.layout.layer(33 + face_id * 30, 4)) protection = pya.Region( self.cell.begin_shapes_rec(self.get_layer("ground_grid_avoidance", face_id))).merged() self.cell.shapes(self.get_layer("ground_grid_avoidance", face_id)).insert(chip_region) # extract the bottom Nb layer pattern = pya.Region(daisy_shapes_base_metal_gap_wo_grid).moved( origin_offset_x, origin_offset_y) difference = chip_region - pattern - protection # copy design cell layers manually to DaisyWoven cell self.cell.shapes(self.get_layer("base_metal_gap_wo_grid", face_id)).insert(difference) self.cell.shapes(self.get_layer("underbump_metallization", face_id)).insert( pya.Region(daisy_shapes_underbump_metallization).moved( origin_offset_x, origin_offset_y)) self.cell.shapes(self.get_layer("indium_bump", face_id)).insert( pya.Region(daisy_shapes_indium_bump).moved( origin_offset_x, origin_offset_y))