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Centre for Photonic Devices and Sensors


Auto-stereoscopic mobile 3D display


This project (mobile 3D) is a collaborative project between Centre for Advanced Photonics and Electronics (CAPE) and Huawei Technologies Co., Ltd., developing novel methods in achieving full resolution auto-stereoscopic (glass-free) mobile display. The developed mobile display is based on the sub-pixel level phase modulation of a switchable liquid crystal (LC) micro-lens array as shown in Figure 1, which can be switched back to a conventional two-dimensional (2D) display. The full scale (4 inch) device aligns with the display panel perfectly at sub-pixel level and switches the entire display area uniformly with no distortion and no colour separation.

The development of high quality liquid crystal micro-lens and demonstration of the technology on real mobile displays have both been published in the journal Optics Express. Six patents applications have been filed on application of such technology, one was granted.


Figure 1: The proposed multiplexing scheme using interlaced spatial and temporal beam steering to obtain the maximum resolution for an auto-stereoscopic display. The multiplexing operation can be described in two steps: (a) Frame 1 – odd sub-pixels deflected to the right eye and even sub-pixels deflected to the left eye. (b) Frame 2 – odd sub-pixels deflected to the left eye and even sub-pixels deflected to the right eye. The phase pattern is shifted by one sub-pixel resulting in the swap of steering directions.

Introduction of CPDS

Centre for Photonic Devices and Sensors (CPDS) is in the Photonics area of the Electrical Engineering Division, with a research focus embracing photonic and sensing devices, functional materials and their integration at system level.

We aim to address future societal needs with new system functionalities through invention of novel device architectures based on in-depth understanding of basic material properties.

There is a wide range of activities within the group, including phase-only holography and its applications, high brightness multi-stable colour reflective displays, tuneable dielectric materials and devices for radio frequencies, liquid crystal on silicon (LCOS) device development, and novel sensors.

As well as conducting highly focused studies, we also specialise in the development of demonstrators for business exploitation and commercialisation. This is facilitated by multi-disciplinary expertise within the group and by our highly experienced team approach. Some of the outcomes from the group have been successfully transferred to our industrial collaborators for production.