SF Bay Area Nanotechnology Council


A Multiview Backlight for Mobile 3D Displays

HP Labs team members (L to R): David Fattal - Principal Scientist, Sonny Vo - post-doc, Zhen Peng - Principal Scientist

HP Labs team members (L to R): David Fattal – Principal Scientist, Sonny Vo – post-doc, Zhen Peng – Principal Scientist

Tuesday August 20, 2013
Noon Р1  pm
Texas Instruments (TI) Auditorium E-1
2900 Semiconductor Drive
Santa Clara, CA

TITLE: A Multiview Backlight for Mobile 3D Displays

SPEAKER: Dr. Zhen Peng, Research Scientist, HP Laboratories

Multiview three-dimensional (3D) displays can project the correct perspectives of a 3D image in many spatial directions simultaneously. They provide a 3D stereoscopic experience to many viewers at the same time with full motion parallax and do not require special glasses or eye tracking. None of the leading multiview 3D solutions is particularly well suited to mobile devices (watches, mobile phones or tablets), which require the combination of a thin, portable form factor, a high spatial resolution and a wide full-parallax view zone (for short viewing distance from potentially steep angles). Our technology relies on the external modulation of a multidirectional backlight that allows the projection of independent images in hundreds of different spatial directions, allowing any number of viewers to experience the 3D stereo effect without the need for glasses and with a continuous sense of motion parallax in a very wide view zone, at an observation distance of up to a meter. The key to our design is a guided-wave illumination technique based on light-emitting diodes that produces wide-angle multiview images in color from a thin planar transparent lightguide. To illustrate the capabilities of this technology, we use simple ink masks or a high resolution commercial liquid-crystal display unit to demonstrate passive and active (30 frames per second) modulation of a 64-view backlight, producing 3D images with a spatial resolution of 88 pixels per inch and full-motion parallax in an unprecedented view zone of 90 degrees. We also present several transparent hand-held prototypes showing animated sequences of up to six different 200-view images at a resolution of 127 pixels per inch. The resulting display is power efficient, ultra-compact, low-cost and optionally transparent.

Dr. Zhen Peng is a Research Scientist at HP Laboratories in Palo Alto, California. His current research interests include mobile 3D display, nanophotonics and its novel applications in human life. He received his Ph.D. degree in Electrical Engineering from the University of Southern California in 2007, and a B.S. in Electronic Engineering from Tsinghua University, China, in 2001. He has authored and coauthored over 40 journal and conference papers, including a recent cover article in Nature.


  • 11:30 am – Registration & light lunch (pizza & drinks)
  • Noon – Presentation & Questions/Answers
  • 1:00 pm –¬†Adjourn
COST: IEEE Members: $5, Non-members:$10


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