Welcome to Guanjun’s webpage!

I am currently a fifth-year Ph.D student in College of Optics and Photonics (CREOL) at University of Central Florida (UCF). I’m pursing my Ph. D. degree in Optics under the supervision of Prof. Shin-Tson Wu. Before that, I received my B.S. in Physics from University of Science and Technology of China (USTC) in June 2014. Now, my research interests cover Liquid Crystals, Organic LED and AR&VR displays. I have five years hands-on experience on LC material characterization and device design, for fast-response LCs, Quantum-dot-enhanced LCDs, and LC photonics devices. As for OLEDs, I developed optical simulation programs for OLED display,  including 1D, 2D, 3D and mixed-level simulations. Furthermore, I also developped multi-resolution foveated display and polarization-multiplexed light field display for  head-mounted devices. For detailed info about my research topics, please refer to my resume.



  • 08/2014-Present             Ph.D. in progress, CREOL, UCF
  • 08/2010-06/2014           B.S. in Optical Information Science and Technology, USTC


  • Code programming:  MATLAB, C, Python, C++
  • Electromagnetic simulation:  COMSOL Multiphysics, FDTD solutions, RSoft
  • Liquid crystal simulation:  TechWiz LCD, DIMOS LCD
  • Optical design:  LightTools, Zemax
  • Optical thin film coating:  TFCalc


1.  C. Zhang, Z. He, H. Chen, L. Zhou, G. Tan, S. T. Wu, and Y. Dong, “Light diffusing, down-converting perovskite-on-polymer microspheres,” J. Mater. Chem. C (2019). DOI: 10.1039/C9TC01130G

2.  Y. Huang, G. Tan, F. Gou, M. C. Li, S. L. Lee, and S. T. Wu, “Prospects and challenges of mini-LED and micro-LED displays,” J. SID (2019). DOI: 10.1002/jsid.760

3.  F. Gou, E. L. Xiang, G. Tan, P. T. Chou, Y. L. Li, Y. F. Lan, and S-T. Wu, “Angular color shift of micro-LED displays,” Opt. Express 27(12), A746-A757 (2019).

4.  T. Zhan, J. Xiong, G. Tan, Y. H. Lee, J. Yang, S. Liu, and S. T. Wu, “Enhancing near-eye display resolution by polarization multiplexing,” Opt. Express 27(11), 15327-15334 (2019).

5.  (Invited Paper) Z. He, G. Tan, D. Chanda, and S. T. Wu, “Novel liquid crystal photonic devices enabled by two-photon polymerization,” Opt. Express 27(8), 11472-11491 (2019).

6.  (Distinguished Student Paper) F. Gou, E. L. Hsiang, G. Tan, Y. F. Lan, C. Y. Tsai, and S. T. Wu, “High performance color-converted micro-LED displays,” J. SID 27(4), 199-206 (2019).

7.  (Distinguished Student Paper) T. Zhan, Y. H. Lee, J. Xiong, G. Tan, K. Yin, J. Yang, S. Liu, and S. T. Wu, “High-efficiency switchable optical elements for advanced head-up displays,” J. SID 27(4), 223-231 (2019).

8.  T. Zhan, Y. H. Lee, G. Tan, J. Xiong, K. Yin, F. Gou, J. Zou, N. Zhang, D. Zhao, J. Yang, S. Liu, and S. T. Wu, “Pancharatnam-Berry Optical Elements for Head-up and Near-eye Displays,” J. Opt. Soc. Am. B 36(5), D52-D65 (2019).

9.  F. Gou, E. L. Hsiang, G. Tan, Y.-F. Lan, C.-Y. Tsai, and S. T. Wu, “Tripling the Optical Efficiency of Color-converted Micro-LED Displays with Funnel-tube Array,” Crystals 9(1), 39 (2019).

10.  G. Tan, T. Zhan, Y. H. Lee, J. Xiong, and S. T. Wu, “Polarization-multiplexed multiplane display,” Opt. Lett. 43(22), 5651-5654 (2018).

11.  G. Tan, Y. H. Lee, T. Zhan, J. Yang, S. Liu, D. F. Zhao, and S. T. Wu, Foveated imaging for near-eye displays,”  Opt. Express 26(19), 25076-25085 (2018).

12.  G. Tan, Y. Huang, M. C. Li, S. L. Lee, and S. T. Wu, High dynamic range liquid crystal displays with a mini-LED backlight, Opt. Express 26(13), 16572-16584 (2018).

13.  Y. H. Lee, G. Tan, K. Yin, T. Zhan, and S. T. Wu,Compact see-through near-eye display with depth adaption,” J. SID 26(2), 64-70 (2018).

14.  H. Chen, G. Tan, and S. T. Wu, Ambient contrast ratio of LCDs and OLED displays,” Opt. Express 25(26), 33643-33656 (2017).

15.  G. Tan, J. H. Lee, S. C. Lin, R. Zhu, S. H. Choi, and S. T. Wu, Analysis and optimization on the angular color shift of RGB OLED displays,” Opt. Express 25(26), 33629-33642 (2017).

16.  (Featured paper) G. Liu, Y. H. Lee, Y. Huang, Z. Zhu, G. Tan, M. Q. Cai, P.-P. Li, D. Wang, Y. Li, S. Pang, C. Tu, S.T. Wu, and H.-T. Wang, Dielectric broadband meta-vector-polarizers based on nematic liquid crystal,” APL Photonics 2, 126102 (2017).

17.  (Review paperG. Tan, Y. H. Lee, F. Gou, H. Chen, Y. Huang, Y.F. Lan, C.Y. Tsai, and S. T. Wu, Review on polymer-stabilized short-pitch cholesteric liquid crystal displays,” J. Phys. D: Appl. Phys. 50, 493001 (2017).

18.  (Review paper) Y. H. Lee, G. Tan, T. Zhan, Y. Weng, G. Liu, F. Gou, F. Peng, N.V. Tabiryan, S. Gauza, and S. T. Wu, Recent progress in Pancharatnam-Berry phase optical elements and the applications for virtual/augmented realities,” Optical Data Processing and Storage 3, 79-88 (2017).

19.  (OSA news releaseG. Tan, J.-H. Lee, Y.-H. Lan, M.-K. Wei, L.-H. Peng, I-C. Cheng, and S. T. Wu, Broadband antireflection film with Moth-eye-like structure for flexible display application,” Optica 4(7), 678-683 (2017).

20.  H. Chen, G. Tan, M. C. Li, S. L. Lee, and S. T. Wu, Depolarization effect in liquid crystal displays,” Opt. Express 25(10), 11315-11328 (2017).

21.  G. Tan,  Y. H. Lee, F. Gou, M. Hu, Y. F. Lan, C. Y. Tsai, and S. T. Wu, Macroscopic model for analyzing the electro-optics of uniform lying helix cholesteric liquid crystals,” J. Appl. Phys. 121, 173102 (2017).

22.  (OSA news release) Y. Huang, H. Chen, G. Tan, H. Tobata, S-I Yamamoto, E. Okabe, Y. F. Lan, C. Y. Tsai, and S. T. Wu, Optimized blue-phase liquid crystal for field-sequential-color displays,” Opt. Mater. Express 7(2), 641-650 (2017).

23.  H. Chen, R. Zhu, G. Tan, M.C. Li, S.-L. Lee, and S. T. Wu, Enlarging the color gamut of liquid crystal displays with a functional reflective polarizer,” Opt. Express 25(1), 102-111 (2017).

24. H. Chen, G. Tan, Y. Huang, Y. Weng, T.-H. Choi, T.-H. Yoon and S. T. Wu, A low voltage liquid crystal phase grating with switchable diffraction angles,” Sci. Rept. 7, 39923 (2017).

25.  G. Tan, R. Zhu, Y. S. Tsai, K. C. Lee, Z. Luo, Y. Z. Lee, and S. T. Wu, High ambient contrast ratio OLED and QLED without a circular polarizer,” J. Phys. D: Appl. Phys. 49, 315101 (2016).

26.  (Outstanding student paper of the year) R. Zhu, H. Chen, T. Kosa, P. Coutino, G. Tan, and S. T. Wu, High-ambient-contrast augmented reality with a tunable transmittance liquid crystal film and a functional reflective polarizer,” J. SID 24(4), 229-233 (2016).

27.  R. Zhu, G. Tan, J. Yuan, and S. T. Wu, Functional reflective polarizer for augmented reality and color vision deficiency,” Opt. Express 24(5), 5431-5441 (2016).

28.  D. Xu, F. Peng, G. Tan, J. He and S. T. Wu, A semi-empirical equation for the response time of in-plane switching liquid crystal display and measurement of twist elastic constant,” J. Appl. Phys. 117, 203103 (2015).

29.  J. YuanG. Tan, D. Xu, F. Peng, A. Lorenz and S. T. Wu, Low-voltage and fast-response polymer-stabilized hyper-twisted nematic liquid crystal,” Opt. Mater. Express 5, 1339-1347 (2015).

30.  D. Xu, G. Tan and S. T. Wu, Large-angle and high-efficiency tunable phase grating using fringe field switching liquid crystal,” Opt. Express 23, 12274-12285 (2015).

Conference Proceedings

1. G. Tan, H. Chen, Y.F. Lan, C.Y. Tsai, and S.T. Wu, “Wide‐view and Fast‐response Uniform Standing Helix Cholesteric LCD,” SID Symp. Digest 49(1), 1769-1772 (May 2018, Los Angeles, California).

2. H. Chen, G. Tan, M. C. Li, S. L. Lee, and S. T. Wu, “High Contrast Ratio LCD with an In‐cell Polarizer,” SID Symp. Digest 49(1), 1734-1737 (May 2018, Los Angeles, California).

3. (Distinguished Student Paper) Y. H. Lee, G. Tan,K. Yin, T. Zhan, and S. T. Wu, “Compact See‐through Near‐eye Display with Depth Adaption,” SID Symp. Digest 49(1), 1060-1063 (May 2018, Los Angeles, California).

4. (Invited Paper) H. Chen, G. Tan, and S. T. Wu, “Can LCDs Outperform OLED Displays in Ambient Contrast Ratio?” SID Symp. Digest 49(1), 981-984 (May 2018, Los Angeles, California).

5. G. Tan, J. H. Lee, S. C. Lin, R. Zhu, S. H. Choi, and S. T. Wu, “Systematic Optimization for Achieving Indistinguishable Color Shift of RGB OLED Displays,” SID Symp. Digest 49(1), 418-421 (May 2018, Los Angeles, California).

6. C. Zhang, J. He, H. Chen, G. Tan, L. Zhou, S. T. Wu, Y. Sohn, and Y. Dong, “Converting Light Diffusing Polymer Powders into Stable Perovskite‐Based Tunable Downconverters,” SID Symp. Digest 49(1), 222-224 (May 2018, Los Angeles, California).

7.  G. Tan,Y. H. Lan, M. K. Wei, L. H. Peng, I. C. Cheng, S. T. Wu, and J. H. Lee. “Antireflection and Self-cleaning Film with Moth-eye-like Structure for Mobile Flexible Displays,” Proc. SPIE 10556, Advances in Display Technologies VIII, 1055608 (2018).

8.  F. Gou, Y.-H. Lee, G. Tan, M. Hu, Y.-F. Lan, C.-Y. Tsai, and S. T. Wu, “Submillisecond Grayscale Response Time of a Uniform Lying Helix Liquid Crystal,” SID Symp. Digest 48(1), 1822-1825 (2017, Los Angeles, California).

9. G. Tan, Y.-H. Lee, F. Gou, M. Hu, Y.-F. Lan, C.-Y. Tsai, and S. T. Wu, “Figure of Merit for Optimizing the Performance of Uniform Lying Helix Cholesteric Liquid Crystals,” SID Symp. Digest 48(1), 490-493 (2017, Los Angeles, California).

10. Y. Huang, H. Chen, G. Tan, H. Tobata, S. Yamamoto, E. Okabe, Y.-F. Lan, C.-Y. Tsai, and S. T. Wu, “New Blue‐Phase Liquid Crystal Optimized for Color-Sequential Displays,” SID Symp. Digest 48(1), 486-489 (2017, Los Angeles, California).

11. G. Tan, J.-H. Lee, Y.-H. Lan, M.-K. Wei, L.-H. Peng, I Cheng, and S. T. Wu, “Moth-eye Anti-reflection Surface for Sunlight Readable Flexible Displays,” SID Symp. Digest 48(1), 574-577 (2017, Los Angeles, California).

12. H. Chen, R. Zhu, G. Tan, M.-C. Li, S.-L. Lee, and S. T. Wu, “Wide-Color-Gamut LCD with a Functional Reflective Polarizer,” SID Symp. Digest 48(1), 1659-1662 (2017, Los Angeles, California).

13. Y.-H. Lee, G. Tan, Y. Weng, and S. T. Wu, “Switchable Lens based on Cycloidal Diffractive Waveplate for AR and VR Applications,” SID Symp. Digest 48(1), 1061-1064 (2017, Los Angeles, California).

14. G. Tan, R. Zhu, Y. S. Tsai, K. C. Lee, Z. Luo, Y. Z. Lee and S. T. Wu, “High Ambient Contrast Ratio OLED and Quantum-dot LED without a Circular Polarizer,” SID Symp. Digest 47, 1509–1512 (2016, San Francisco).

15. (Distinguished Student Paper) R. Zhu, H. Chen, G. Tan, T. Kosa, P. Coutino and S. T. Wu, “A High-Ambient-Contrast Augmented Reality System,” SID Symp. Digest 47, 1025–1028 (2016, San Francisco).

16. D.Xu, G. Tan and S. T. Wu, “Multi-angle Beam Steering for Head-Mounted Displays,” SID Symp. Digest 47, 1826–1829 (2016, San Francisco).


1. Y. H. Lee, T. Zhan, G. Tan, F. Gou, F. Peng, S. T. Wu, “Optical Display System with Enhanced Resolution, Methods, and Applications,” US Patent 10,115,327 B1 (Oct. 30, 2018).

2. Y.-S. Tsai, K.-C. Lee, S. T. Wu, G. Tan, R. Zhu, “Display Device and Optical Film,” US Patent 9,680,132 B1 (June 13, 2017).

Honors & Awards

  • 02/2019          First Place of SPIE AR/VR/MR Optical Design Challenge
  • 01/2019          UCF Graduate Dean’s Dissertation Completion Fellowship
  • 10/2018          IEEE Orlando Chapter Graduate Student Scholarship Award
  • 05/2018          Best Student Paper, ICDT
  • 05/2018          SPIE Optics and Photonics Education Scholarship
  • 04/2018          Dr. Martin Schadt Best Paper Award, SLCP
  • 06/2017          JSID’s Outstanding Student Paper of the Year Award
  • 05/2017          Student Travel Grant Award, SID International Symposium
  • 05/2016          Distinguished Student Paper, SID International Symposium
  • 05/2016          Student Travel Grant Award, SID International Symposium
  • 09/2014          Graduate Dean’s Fellowship, University of Central Florida
  • 09/2014          CREOL Graduate Research Fellowship, University of Central Florida
  • 07/2014          Outstanding Graduate Award, USTC
  • 10/2013          Outstanding Undergraduate Research Project, USTC
  • 10/2012          First Prize of Undergraduate Mathematical Contest, Anhui, China
  • 10/2012          Outstanding Student Leader, USTC
  • 09/2012         Societe Generale Responsibility Scholarship, USTC
  • 09/2011          National Scholarship (top 1%), USTC
  • 09/2011          Outstanding Freshman Scholarship, USTC

Leadership & Service


  • Phone:   (407) 823-4922
  • Fax:   (407) 823-6880
  • Email:   guanjun_tan@knights.ucf.edu
  • Address:   College of Optics & Photonics, University of Central Florida, 4000 Central Florida Blvd. Orlando, Florida 32816-2700

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