Speaker: Yi-Ching Huang 黃怡菁 Advisor: Prof. Han-Ping D. Shieh( 謝漢萍教授 ) Prof. Yi-Pai Huang( 黃乙白教授 ) Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu, Taiwan Mar High Resolution Auto-stereoscopic 3D Display With Multi-Electrically Driven Cylindrical Liquid Crystal Lens (MeDLC) Master thesis proposal

2 Advanced Display Optics Lab Outline  Introduction  Motivation & Objective  Active scanning film -- Multi-Electrically Driven Liquid Crystal Lens (MeDLC)  Future Work

3 Advanced Display Optics Lab Outline  Introduction  Motivation & Objective  Active scanning film -- Multi-Electrically Driven Liquid Crystal Lens (MeDLC)  Future Work

4 Advanced Display Optics Lab 3D Display Binocular Parallax 3D display technology Stereoscopic (with glasses) Shutter type Polarization type Anaglyph type Pulfrich type Head Mounted Display Auto-stereoscopic (without glasses) Holographic type Volumetric type 2D multiplexed type Time- multiplexed Spatial- multiplexed

5 Advanced Display Optics Lab Stereoscopic Display Polarization typeShutter type Anaglyph typeHead Mounted Display Drawback ： It’s not convenient to wear glasses.

6 Advanced Display Optics Lab 3D Display 3D display technology Stereoscopic (with glasses) Shutter type Polarization type Anaglyph type Pulfrich type Head Mounted Display Auto-stereoscopic (without glasses) Holographic type Volumetric type 2D multiplexed type Time- multiplexed Spatial- multiplexed

7 Advanced Display Optics Lab Auto-Stereoscopic Display Time-multiplexed Drawback ： Limited viewing angle

8 Advanced Display Optics Lab Auto-Stereoscopic Display Spatial-multiplexed Barrier Lens Array Slanted Lenses Drawbacks ： Low resolution Limited viewing angle (~11°)

9 Advanced Display Optics Lab Concept Active scanning film Organic LED panel Auto-stereoscopic display (Time-multiplexed) Fast Response OLED ： Offer images for different views Active scanning film ： Project images to different views

10 Advanced Display Optics Lab Outline  Introduction  Motivation & Objective  Active scanning film -- Multi-Electrically Driven Liquid Crystal Lens (MeDLC)  Future Work

11 Advanced Display Optics Lab Motivation and Objective  Motivation Auto-stereoscopic with Full resolution images and Wide viewing angle approach 3D display.  Objective 1. Active scanning film 2. 32ms scanning 3. 9 views, 11° viewing angle

12 Advanced Display Optics Lab Outline  Introduction  Motivation & Objective  Active scanning film -- Multi-Electrically Driven Liquid Crystal Lens (MeDLC)  Future Work

13 Advanced Display Optics Lab Active Scanning Film Active scanning film unit - Multi-Electrically Driven Liquid Crystal Lens (MeDLC) V op

14 Advanced Display Optics Lab Active Scanning Film Glass ITO Electrode LC layer Projected light Pixel Advantages ： Full resolution Wide viewing angle

15 Advanced Display Optics Lab MeDLC Prototype Spacer Bottom glass Top glass Side view Top view electrode Experimental setup

16 Advanced Display Optics Lab Outline  Introduction  Motivation & Objective  Active scanning film -- Multi-Electrically Driven Liquid Crystal Lens (MeDLC)  Future Work

17 Advanced Display Optics Lab Future Work Equivalent lens Short term -- Active scanning V 1 V 2 V 3 V 4 MUX V out MeDLC FPGA

18 Advanced Display Optics Lab Future Work Long term -- Reduce response time Formula 1 : : rotational viscosity : elastic constant : cell gap : threshold voltage : bias voltage: applied voltage Formula 2 : Δn: Refractive index difference between the center and the edge of the cell. Δn ↑ Cell gap (d) ↓ Response time(τ) ↓

19 Advanced Display Optics Lab

20 Advanced Display Optics Lab Auto-Stereoscopic Display Volumetric type Holographic type

21 Advanced Display Optics Lab Formulas: where Δn is a parabolic form (Δn: Refractive index difference between the center and the edge of the cell. )  Δn r Ideal Curve

22 Advanced Display Optics Lab Low Focusing Ability Whole Aperture-size High Freedom of Adjustment  Double-Electrode Unit  Multi-Electrode Unit Multi-Electrode is closer to the ideal curve