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2D/3D Switchable Liquid Crystal
Lens unit for Display
FOC LLC
Market Demand
http://www.prweb.com/releases/2012/9/prweb9944829.htm
Glass free 3D display
with lenticular lens
We need switchable option from 3D to 2D.
Nice to have an arbitrary sector of display with
2D and other area with 3D simu...
Proposed solution
• Polarization selector layer followed by the polarization dependent
lens layer.
• The last one shows th...
Work description
FLCpolarization1
FLCpolarization2
Optics- Lens effect
Applied V pulse
Optical
response of the
FLC bi-stable
polarization
rotator stage.
Light from
the LCD
L...
Optics- No Lens effect
Applied V pulse
Optical
response of the
FLC bi-stable
polarization
rotator stage.
Light from
the LC...
Selective 2D/3D sectors
Jisoo Hong, Youngmin Kim, Hee-Jin Choi, Joonku Hahn, Jae-Hyeung Park, Hwi Kim, Sung-Wook Min, Ni Chen, and Byoungho Lee, "...
Issues and problems
• Complicated fabrication for the patterned
electrode i.e. relatively expensive.
• Polymer stabilized ...
Resume
• We propose a 2D-3D switchable lens array unit that has two
components:
• Polarization dependent lens layer
• Pola...
Appendix
UV-light
polarization direction
θ
∀θ• azo-dye molecule with
absorption oscillator
•Azo-dye absorption oscillator (chromoph...
Light alignment
Photosensitive
molecules
Photoalignment
Layer coated
Exposure with
selected light source
Molecules aligned...
Azo dye monomers
Photo reorientation
Heating
Liquid crystal
Non-polarized
UV irradiation
Heat polymerization
Stabilization...
Experiments
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2D/3D switchable display

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Creating a switchable 2D/3D display. 3D display without glasses. Any sector can be switched 2D/3D independently. A new original technology of switchable display provides high quality and minimal power consumption comparing to competitors.

Publicada em: Engenharia
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2D/3D switchable display

  1. 1. 2D/3D Switchable Liquid Crystal Lens unit for Display FOC LLC
  2. 2. Market Demand http://www.prweb.com/releases/2012/9/prweb9944829.htm
  3. 3. Glass free 3D display with lenticular lens
  4. 4. We need switchable option from 3D to 2D. Nice to have an arbitrary sector of display with 2D and other area with 3D simultaneously. The modern demand includes 3D object and 2D text
  5. 5. Proposed solution • Polarization selector layer followed by the polarization dependent lens layer. • The last one shows the lens effect only for one polarization of the light but no lens effect for the orthogonally polarized light. • The polarization selector stage is bi-stable, where in the first state it rotates the plane of polarization of the impinging light from the Display to 90 degree and shows 3D object thanks to lens effect. Whereas the other state does not affect plane of the polarization of the impinging Light from the Display and shows 2D mode. Polarization dependent polymer lens array Bi-stable (FLC) polarization rotating layer.
  6. 6. Work description FLCpolarization1 FLCpolarization2
  7. 7. Optics- Lens effect Applied V pulse Optical response of the FLC bi-stable polarization rotator stage. Light from the LCD LCD FLC
  8. 8. Optics- No Lens effect Applied V pulse Optical response of the FLC bi-stable polarization rotator stage. Light from the LCD LCD FLC
  9. 9. Selective 2D/3D sectors
  10. 10. Jisoo Hong, Youngmin Kim, Hee-Jin Choi, Joonku Hahn, Jae-Hyeung Park, Hwi Kim, Sung-Wook Min, Ni Chen, and Byoungho Lee, "Three-dimensional display technologies of recent interest: principles, status, and issues [Invited]," Appl. Opt. 50, H87-H115 (2011) Yu-Cheng Chang, Tai-Hsiang Jen, Chih-Hung Ting, and Yi-Pai Huang, "High-resistance liquid-crystal lens array for rotatable 2D/3D autostereoscopic display," Opt. Express 22, 2714-2724 (2014) Ruidong Zhu, Su Xu, Qi Hong, Shin-Tson Wu, Chiayu Lee, Chih-Ming Yang, Chang-Cheng Lo, and Alan Lien, "Polymeric-lens-embedded 2D/3D switchable display with dramatically reduced crosstalk," Appl. Opt. 53, 1388-1395 (2014) LC convex lens, embedded in the concave lens nano-PDLC lens Micro-lens structures with different top ITO electrode shapes The patterned electrode method: The polarization selective mode. Alternative solutions for 2D-3D switchable lens arrays
  11. 11. Issues and problems • Complicated fabrication for the patterned electrode i.e. relatively expensive. • Polymer stabilized LC requires tight restrictions on the index matching otherwise scattering appears. • Polarization rotator or polarization selector require TN LC panel. • All existing options provide the 2D-3D switchable function at the cost of the power consumption and for some of them it is extremely high. Micromachines 2014, 5(2), 300-324; doi:10.3390/mi5020300 Jisoo Hong, Youngmin Kim, Hee-Jin Choi, Joonku Hahn, Jae-Hyeung Park, Hwi Kim, Sung-Wook Min, Ni Chen, and Byoungho Lee, "Three-dimensional display technologies of recent interest: principles, status, and issues [Invited]," Appl. Opt. 50, H87-H115 (2011)
  12. 12. Resume • We propose a 2D-3D switchable lens array unit that has two components: • Polarization dependent lens layer • Polarization rotator/selector Bi-stable layer • The polarization dependent lens layer shows lens effect for one polarization of the light while no lens effect for the orthogonal polarization of the impinging light. • The polarization rotator/selector bi-stable stage rotates the plane of polarization of the impinging light from the display and the unit shows the 3D object. Whereas in the other state the polarization rotator/selector bi-stable stage does not affect the plane of polarization of the impinging light from the display and the unit shows the 2D object. • The proposed unit, unlike other alternative, does not require power to hold any 2D or 3D mode. The unit needs power only to switch from one state to other. Therefore the unit does not consume additional power during the single mode operation.
  13. 13. Appendix
  14. 14. UV-light polarization direction θ ∀θ• azo-dye molecule with absorption oscillator •Azo-dye absorption oscillator (chromophore) OH NaOOC N N SO3 Na N N OH SO3 Na COONa V. Chigrinov et al. Phys. Rev. E, (2004). Diffusion mechanism of azo-dye molecule alignment
  15. 15. Light alignment Photosensitive molecules Photoalignment Layer coated Exposure with selected light source Molecules aligned To desired direction -1,0 -0,8 -0,6 -0,4 -0,2 0,0 0,2 0,4 0,6 0,8 1,0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 ρ(u) A=0,0 A=2,0 A=4,1 A=6,7 A=12,0 A=25,0 A=50,0 A=75,0 A=100,0 A=200,0 A=500,0 A=1000,0
  16. 16. Azo dye monomers Photo reorientation Heating Liquid crystal Non-polarized UV irradiation Heat polymerization Stabilization of the orientation of the azo dyes by heat polymerization O O O O N N 2HOOC SO3Na Polymerizable azo dye
  17. 17. Experiments

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