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New Nano-Imprinted Thin Films Technology creates unique
backlighting and frontlighting capabilities for the full
range of Portable Electronics. What is unique is
the capability to vary the layout of Micro-Lenses to
achieve higher efficiency and uniformity than can be
achieved by standard Light Guide films and plates.
This allows electronic devices to be uniformly and
efficiently lit with very thin profile lighting sources.
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Nano Imprinted Micro-Lens Structures
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Brightness Enhancement is achieved by designing
the microstructures to control the direction of light.
As illustrated above, more vertical light ” I” is direct
through the lenses to project through within a 70 degree
range. Less vertical light “II” is redirected through
the sides of the lenses to project through within the
70 degrees. More horizontal light will be partially
reflected back to the source. The shape of the lens
can be varied to achieve specific light transmission
goals.
Micro Lens Structure Films are made up of a complete
array of micro-lenses with a variety of shapes depending
on the use. The Lenses are of the size of 10
to 200 um which are imprinted on to the surface of
flexible Polycarbonate or other materials in a
roll-to-roll process. These very small
lenses and other structures allow diffraction to be
effectively used for control of lighting direction. Unique
is the ability to create these
micro-structures in a low cost production process in
such large surface areas.
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Development Software: Light Guide Simulation
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Light simulation software is used to
analyze the light distribution of the Light Guide Films.
This software assists
with the initial design stages providing information to
determine the LED quantity,
positions and design requirements.
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Mastering Process
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The combination of Interference Lithography and
High Resolution, Large Format Mastering makes Nano
Imprinting technology possible. All of our
supplied films are manufactured with this new
Nanotechnology Imprinting technology. This high
resolution nanometer imaging makes very exact control of
the light direction possible with high transmissivity.
The special imprinting process allows such high
resolution imaging to be manufactured at low cost with
very high quality and uniformity.
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Light Guide Film Impression....Micro View
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The Master mold is created using high resolution
photographic processes. The Master mold is then
used in the Roll to Roll manufacturing process to
imprint the films. Unique is the capability
to vary the micro-lens array density or fill factor
across the surface to achieve higher efficiency and
uniformity. It also allows custom design
layout to optimize each applications requirements.
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Roll to Roll Impression
Processing (thin films only)
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Roll to Roll manufacturing offers lower cost
alternative to molded plastic light guides and
other film technologies. The Imprint
process uses the master (mold) to imprint onto the
films. Films are then encapsulated with in the
Complex process. The Kiss cut process uses die
cutting to make the desired film shapes for easy
installation in customer manufacturing. Final films
are delivered in rolls for easy shipping and
handling.
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