US 12,662,380 B1
Printability and profile control of screen-printed gridlines by rheological manipulation
Sang M. Han, Albuquerque, NM (US); Brian Rummel, Albuquerque, NM (US); and Andre Chavez, Albuquerque, NM (US)
Filed by UNM RAINFOREST INNOVATIONS, Albuquerque, NM (US)
Filed on Sep. 12, 2022, as Appl. No. 17/931,393.
Claims priority of provisional application 63/242,891, filed on Sep. 10, 2021.
Int. Cl. C01B 32/158 (2017.01); B82Y 40/00 (2011.01)
CPC C01B 32/158 (2017.08) [B82Y 40/00 (2013.01); C01B 2202/02 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A conductive composition, comprising:
a plurality of silver particles;
one or more cellulose-based binders;
an amount of glass frit;
an organic solvent; and
a plurality of carbon nanotubes; and wherein:
a viscosity of the conductive composition is from about 300,000 cP to about 50,000 cP at a shear rate of from about 10/sec to about 40/sec.
 
14. A screen-printed gridline, comprising:
a cross-sectional triangular shape, comprising:
a top cross-sectional dimension; and
a bottom cross-sectional dimension; and
a conductive composition; and wherein:
a ratio of the top cross-sectional dimension to the bottom cross-sectional dimension is 0.8 or less; and
the conductive composition comprises:
silver particles;
one or more cellulose-based binders;
glass frit;
an organic solvent; and
carbon nanotubes.