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Light Guides
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Light Guide Plates
for LCD LED Backlighting
New Nano-Imprinted Thin Films
Technology creates unique Light Guide Plates for Backlight Assemblies
used in Portable Electronics. Below are
examples of backlights customers have made using
Nicrotek Light Guide Plates.
9.7"
8.4"
8.4"
7.0"
Uniformity better than 85%
Brighter w Fewer LEDs
Ultra-Thin Profiles
Lower Cost
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- Uniformity improved by unique ability to vary
Micro-lens density (Fill-Factor) over the surface.
- Micro-lens technology provides brighter transfer
of light to the viewer.
- Use of Light Guide Film compared to Injection
Molded Plates reduces profile.
- Roll to Roll manufacturing offers lower
cost alternative to molded plastic light guides.
- Applications include PDA’s, Tablets,
Notebooks, GPS’s, Cameras, Custom Displays.
- Customized sizes, requirements and
specifications are accommodated within capabilities.
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Typical Backlight Film Stack
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Front Protective Film |
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Vertical Prism Film |
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Horizontal Prism Film |
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Diffuser Film |
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Light Guide Plate / LED array |
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Back Reflector Film
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Light Guide Films: How they work.
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The Nicrotek Light Guide Films (LGFs)
are designed for effective use of LED edge light
sources. Light from the LED sources is
internally reflected down the length of LGF to the
various viewing areas. The Localized Micro-Lens
Arrays
redirect light out of the film to the viewer only
where it is needed (to each logo, image, key or button) by
layout design. This new technology patterning
allows light to be efficiently and uniformly
directed where light is desired in a very low profile
film.
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LCD LED Backlight: Light Guide Plate
Specifications
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View Area Size |
< 2.8”
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2.8”- 5” |
5” – 7” |
7” – 14” |
LPG Thickness |
0.25 mm |
0.4 mm |
0.5 mm |
0.7 mm |
LED Height (typical) |
0.3 mm |
0.3-0.4 mm |
0.4-0.6 mm |
0.6 mm |
Luminance (cd/m2)
(typical) |
5,000 min
6,500 typ |
5,000 min
6,500 typ |
5,000 min
6,500 typ |
5,000 min
6,500 typ |
Luminance
Uniformity (%) (Typ.) |
75% min 85% typ |
75% min
85% typ |
75% min
85% typ |
75% min 85% typ |
Chromaticity
(Typical) |
X =
0.296 +/-0.015 Y = 0.305 +/- 0.15 |
Materials |
Polycarbonate, PET, TPU, etc. |
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See MicroLens Technology |
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See Mastering and Manufacturing Processes |
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