Liquid Crystal Non-Display Application

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Liquid Crystal Non-Display Application
Throwing Brick To Obtain Jade Talk

• Jianru Shi
• Liquid Crystal Institute

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LC Electro-Optical Panel
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What LC Can Do

• Phase Modulation
• Polarization/Amplitude Modulation

Pick linear output, add analyzer, then
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LC Plays Significant Roles In

1. Information Display (Amplitude Modulation, Big
   Commercial Success)
2. Information Processing ( Amplitude Modulation,
   Problem)
3. Holographic Imaging (Amplitude Phase
   Modulation, Less Explored)
4. Signal Transmission (Phase modulation, Technical
   Success, Commercial Failure )
5. Beam Steering (Phase modulation, Being Explored,
   Huge Commercial Potential)

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Application I Information Display
Samsung 54inch
Sharp
Dominated By Asia Companies
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Application 2 Information Processing
Machine Vision Example
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Liquid Crystal Light Amplifier
Writing light
V13.2volt V25.2volt
T
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Light Amplifier In Early Projector
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Liquid Crystal Optical Filter
High resolution TV Panel
Encode wavelet function onto the LC spatial light
modulator Works as a band pass filter
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Optical Filtering In Fourier Plane
Edge detection
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Pros Cons
Conduct parallel optical computing
Too bulky because the 4f lens system is required
Computer image processing is preferred, though
slow
Improvement replace the glass lens with liquid
crystal lens array
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Application 3 Holographic Imaging
3D image
Amplitude modulation
Phase modulation
Beam shaping
Micro optics Diffractive Optics
Phase-only modulation
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Requirments
High resolution, deep modulation
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Application 4 Signal Transmission
Broadband optical communication
neffective
Fabry-Perot Wave Filter
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Commercially Available
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Application 5 Beam Steering
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Laser Radar
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Laser Internet
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Infrared Countermeasure
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Liquid Crystal Blazed Grating Approach
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Liquid Crystal Displaced Lens Array Cascade
Approach
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Being Explored
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Conclusion

• Of all the five applications, three of them have
  great commercial potential, only one of them is
  fully developed. With the novel emerging
  technology, its time to consider the new money
  making point.