def add_wafer_outline(self):
"""
Create Wafer Outline
"""
outline=Cell('WAF_OLINE')
for l in self.cell_layers:
circ=Circle((0, 0), self.wafer_r, 100, layer=l)
outline.add(circ)
# outline.add(Disk(l, (0,0), self.wafer_r, self.wafer_r-10))
self.add(outline)
def add_orientation_text(self):
"""
Create Orientation Label
"""
tblock = Cell('WAF_ORI_TEXT')
for l in self.cell_layers:
for (t, pt) in self.o_text.iteritems():
txt=Label(t, 1000, layer=l)
bbox=txt.bounding_box
width=np.array([1,0]) * (bbox[1,0]-bbox[0,0])
offset=width * (-1 if pt[0]<0 else 0)
txt.translate(np.array(pt) + offset)
tblock.add(txt)
self.add(tblock)
def AlignmentMarks(styles, layers=1):
"""
Create alignment marks.
:param styles: a character, or a seq of characters indicating the style of
mark(s) desired
:param layers: an integer or a list of integers of layer(s) on which to
place the mark of the corresponding entry in ``styles``
:returns: A cell with the requested marks
Example::
# Make matching marks on layers 1 and 2
AlignmentMarks(('A', 'C'), (1,2))
The marks are stored in the file CONTACTALIGN.GDS
A:(layer1): 300 x 300 um
B:(layer2):
C:(layer3): 600x400um
"""
if isinstance(styles, numbers.Number): styles=[styles]
if isinstance(layers, numbers.Number):
layers=[layers]*len(styles)
else:
if len(layers)!=len(styles):
raise ValueError('Styles and layers must have same length.')
styles_dict={'A':1, 'B':2, 'C':3}
cell=Cell('CONT_ALGN')
path,_=os.path.split(__file__)
fname=os.path.join(path, 'resources', 'ALIGNMENT.GDS')
imp=GdsImport(fname)
for (s,l) in zip(styles, layers):
style=styles_dict[s]
for e in imp['CONTACTALIGN'].elements:
if e.layer==style:
new_e=e.copy()
new_e.layer=l
cell.add(new_e)
return cell
def Verniers(styles, layers=1):
"""
Create vernier alignment tools.
:param styles: a character 'A' or 'B', or a list of characters indicating
the style of mark(s) desired
:param layers: an integer or a list of integers of layer(s) on which to
place the mark of the corresponding entry in ``styles``
:returns: A cell with the requested marks
Example::
#Make a pair of matching verniers on layers 1 and 2
ver = Verniers(('A', 'B'), (1,2))
The marks are stored in the file VERNIERS.GDS
215 x 203 um
"""
if isinstance(styles, numbers.Number): styles=[styles]
if isinstance(layers, numbers.Number):
layers=[layers]*len(styles)
else:
if len(layers)!=len(styles):
raise ValueError('Styles and layers must have same length.')
styles_dict={'A':1, 'B':2, 'C':2}
cell=Cell('VERNIERS')
path,_=os.path.split(__file__)
fname=os.path.join(path, 'resources', 'ALIGNMENT.GDS')
imp=GdsImport(fname)
for (s,l) in zip(styles, layers):
style=styles_dict[s]
for e in imp['VERNIERS'].elements:
if e.layer==style:
new_e=e.copy()
new_e.layer=l
cell.add(new_e)
return cell
def add_dicing_marks(self):
"""
Create dicing marks
"""
width=100./2
r=self.wafer_r
rng=np.floor(self.wafer_r/self.block_size).astype(int)
dmarks=Cell('DIC_MRKS')
for l in self.cell_layers:
for x in np.arange(-rng[0], rng[0]+1)*self.block_size[0]:
y=np.sqrt(r**2-x**2)
vm=Rectangle((x-width, y), (x+width, -y), layer=l)
dmarks.add(vm)
for y in np.arange(-rng[1], rng[1]+1)*self.block_size[1]:
x=np.sqrt(r**2-y**2)
hm=Rectangle((x, y-width), (-x, y+width), layer=l)
dmarks.add(hm)
self.add(dmarks)
def add_aligment_marks(self):
"""
Create alignment marks on all active layers
"""
d_layers=self.cell_layers
styles=['A' if i%2 else 'C' for i in range(len(d_layers))]
am = AlignmentMarks(styles, d_layers)
ver = Verniers(styles, d_layers)
mag = 10.
mblock = Cell('WAF_ALGN_BLKS')
mblock.add(am, magnification=mag)
mblock.add(am, origin=(2300, -870))
mblock.add(ver, origin=(1700, -1500), magnification=3)
mblock.add(ver, origin=(2000, -1200))
mblock.add(ver, origin=(2500, -1200))
for pt in self.align_pts:
offset=np.array([3000, 2000]) * np.sign(pt)
self.add(mblock, origin=pt + offset)
class Wafer_GridStyle(Cell):
"""
The base wafer style consisting of blocks of patterned features.
:param name: The name of the new wafer cell
:param cells: a list of cells that will be tiled to fill the blocks
the cells will be cycled until all blocks are filled.
:block_gap: the distance to leave between blocks
:returns: A new wafer ``Cell``
Spacing between cells in a block is determined automatically based on the cell
bounding box, or by using the attribute cell.spacing if it is available.
"""
#wafer radius (in um)
wafer_r = None
#the block size in um
block_size = None
#the placement of the wafer alignment points
align_pts = None
def __init__(self, name, cells=None, block_gap=400):
Cell.__init__(self, name)
self.cells=cells
self.cell_layers=self._cell_layers()
self._label=None
self.edge_gap=block_gap/2.
def _cell_layers(self):
"""
A list of all active layers in ``cells``
"""
cell_layers=set()
for c in self.cells:
if isinstance(c, Cell):
cell_layers |= set(c.get_layers())
else:
for s in c:
cell_layers |= set(s.get_layers())
return list(cell_layers)
def add_aligment_marks(self):
"""
Create alignment marks on all active layers
"""
d_layers=self.cell_layers
styles=['A' if i%2 else 'C' for i in range(len(d_layers))]
am = AlignmentMarks(styles, d_layers)
ver = Verniers(styles, d_layers)
mag = 10.
mblock = Cell('WAF_ALGN_BLKS')
mblock.add(am, magnification=mag)
mblock.add(am, origin=(2300, -870))
mblock.add(ver, origin=(1700, -1500), magnification=3)
mblock.add(ver, origin=(2000, -1200))
mblock.add(ver, origin=(2500, -1200))
for pt in self.align_pts:
offset=np.array([3000, 2000]) * np.sign(pt)
self.add(mblock, origin=pt + offset)
def add_orientation_text(self):
"""
Create Orientation Label
"""
tblock = Cell('WAF_ORI_TEXT')
for l in self.cell_layers:
for (t, pt) in self.o_text.iteritems():
txt=Label(t, 1000, layer=l)
bbox=txt.bounding_box
width=np.array([1,0]) * (bbox[1,0]-bbox[0,0])
offset=width * (-1 if pt[0]<0 else 0)
txt.translate(np.array(pt) + offset)
tblock.add(txt)
self.add(tblock)
def add_dicing_marks(self):
"""
Create dicing marks
"""
width=100./2
r=self.wafer_r
rng=np.floor(self.wafer_r/self.block_size).astype(int)
dmarks=Cell('DIC_MRKS')
for l in self.cell_layers:
for x in np.arange(-rng[0], rng[0]+1)*self.block_size[0]:
y=np.sqrt(r**2-x**2)
vm=Rectangle((x-width, y), (x+width, -y), layer=l)
dmarks.add(vm)
for y in np.arange(-rng[1], rng[1]+1)*self.block_size[1]:
x=np.sqrt(r**2-y**2)
hm=Rectangle((x, y-width), (-x, y+width), layer=l)
dmarks.add(hm)
self.add(dmarks)
def add_wafer_outline(self):
"""
Create Wafer Outline
"""
outline=Cell('WAF_OLINE')
for l in self.cell_layers:
circ=Circle((0, 0), self.wafer_r, 100, layer=l)
outline.add(circ)
# outline.add(Disk(l, (0,0), self.wafer_r, self.wafer_r-10))
self.add(outline)
def add_blocks(self):
"""
Create blocks and add them to he wafer Cell
"""
self.manifest=''
for (i, pt) in enumerate(self.block_pts):
cell=self.cells[i % len(self.cells)]
origin = pt*self.block_size
prefix=self.blockcols[pt[0]]+self.blockrows[pt[1]]
if isinstance(cell, Cell):
cell_name=prefix+cell.name
try:
spacing = cell.spacing
except AttributeError:
spacing = None
block=Block(cell_name, cell, self.block_size, edge_gap=self.edge_gap, prefix=prefix+'_', spacing = spacing)
self.manifest+='%2d\t%s\t%s\t(%.2f, %.2f)\n' % ((i, prefix, cell.name)+tuple(origin))
else:
cell_name=prefix + cell[0].name
block=RangeBlock_1D(cell_name, cell, self.block_size, edge_gap=self.edge_gap, prefix=prefix+'_')
self.manifest+='%2d\t%s\t%s\t(%.2f, %.2f)\n' % ((i, prefix, cell[0].name)+tuple(origin))
self.add(block, origin=origin)
def _place_blocks(self):
"""
Create the list of valid block sites based on block size and wafer diam.
"""
ind_max=np.floor(self.wafer_r/self.block_size).astype(int)
self.block_pts=[]
for x in range(-ind_max[0], ind_max[0]):
for y in range(-ind_max[1], ind_max[1]):
origin=np.array([x,y])
flag=True
for corner in np.array([[0,0], [1,0], [1,1], [0,1]]):
lsq=(((origin+corner)*self.block_size)**2).sum()
if lsq > self.wafer_r**2:
flag=False
break
if flag:
self.block_pts.append([x,y])
#String prefixes to associate with each row/column index
xs, ys=set(), set()
for p in self.block_pts:
xs.add(p[0])
ys.add(p[1])
xs=sorted(list(xs))
self.blockcols=dict(zip(xs, [string.uppercase[i] for i,x in enumerate(xs)]))
ys=sorted(list(ys))
self.blockrows=dict(zip(ys, [string.digits[i] for i,y in enumerate(ys)]))
def add_label(self, label):
"""
Create a label
"""
if self._label is None:
self._label=Cell(self.name+'_LBL')
self.add(self._label)
else:
self._label.elements=[]
for l in self._cell_layers():
txt=Label(label, 1000, layer=l)
bbox=txt.bounding_box
offset=np.array([0,2]) * self.block_size - bbox[0] + 200
txt.translate(offset)
self._label.add(txt)
