We present the design and construction of a micro-display consisting of independently microfabricated light emitting
diodes (LEDs) and silicon transistors on unconventional substrates such as flexible plastics. The fabrication process
takes advantage of self-assembly to form the display. Silicon microcomponents and AlGaAs red LEDs were
microfabricated and released to form a powder-like collection of parts. A plastic template containing binding sites was
independently microfabricated. Each binding site on the template consisted of a well with a shape complementary to that
of the released component. Self-assembly process was conducted in a fluidic medium to allow the microcomponents to
assemble in proper receptor sites on the flexible template. We showed self-assembly of both LEDs and driving circuitry
for display on plastic template. We got more than 90% yield for physically positioning the parts on template, with
electrical connection yield of 62%.
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