Partners Technologies


Partners Technologies

> These technologies include :
– Solid Electrode Technology (Three bistable states LCD)
– Fast response LCD
– Alignment materials for LC Devices: VA, PA, TA and Photo-alignment

Solid Electrode Technology (Three bistable states LCD)
Cholesteric Liquid Crystals are known to exhibit two bistable states under switching by an external electric field. We found that the threshold voltage (Vth) for switching between these states strongly depends on the anchoring conditions. Hence, patterning the inner surface of the confining substrates with areas of different anchoring then, besides the two bistable states, a third one, which is a mixture of these two, will appear in the form of the imprinted anchoring pattern (hidden image). The imprinted image will take place upon application of driving voltage with appropriate magnitude and form. The hidden image is also bistable and could appear as positive or negative image, depending on the applied driving voltage.
HighVisTec has an exclusive right for use and for marketing this technology

Fast Response LCDs
One still existing problem in LCDs is their slow switching times. Slow switching of the standard liquid crystal causes bad quality of the displayed moving images, for instance. Fast switching is required in the photonics devices, especially it is important in those devices performing a real time processing. Whereas the rise time (𝜏rise) is controlled by the applied electric field, the fall (relaxation) time (𝜏fall) depends on the liquid crystal viscosity and elastic constants. Our patented solutions include two novel LCD modes, Namely:
Fast Switching Double Cell Liquid Crystal Device
Polymer Stabilised Flexoelectric Polarisation
HighVisTec has an exclusive right for use and for marketing these technologies

Alignment Materials for LCDs: VA, PA, TA and Photo-Alignment
Within a long term project with Nissan Chemistry Corporation, Japan, our partner developed a full spectrum of alignment materials for LCDs, which includes materials for Planar (PA), Vertical (VA) and Tilted (TA, 0 º<ɛ <90 º) alignment. Photo-alignment materials for PA, VA and TA were also developed in parallel. All these alignment materials are patented and HighVisTec has now an exclusive right for use and for marketing them and the related know how.
The Prestigious Merck Award for Outstanding Scientific Contribution to the Display Technology was given to alignment materials developed by our partner in 2012 (which are compatible with low temperature processing of flexible substrate)

Own Technologies

Usually, polymer stabilization involves the entire bulk of liquid crystal layer detrimental to optical quality. Our patented method involves surface polymer stabilization of the liquid crystal layer adjacent to the confining substrates’ surface, which becomes invisible for the light and, thus, it does not affect the optical properties… Discover more

Novel LCD electrode structure, so called Perforated Electrode, (PE), is suggested for generating a Fringe Field Switching, enabling to generate images with 360º viewing angle constant contrast... Discover more

Conventional LCDs are electrically addressed. However, a different approach for addressing of the LCDs, such as liquid crystal light shutters, can be employed by incorporating in the LCD photo generated voltage units (PVU) so that the device can be optically and/or electrically addressed... Discover more



Partners Technologies

Besides the two standard bistable states of cholesteric liquid crystals, a third one (hidden image) also bistable, could appear as positive or negative image, depending on the applied driving voltage... Discover more

Fast switching is required in many devices, especially in those performing a real time processing. Our partner patented solutions include two novel LCD modes... Discover more

Within a long-term project with Nissan Chemistry Corporation, Japan, our partner developed a full spectrum of alignment materials for LCDs, which includes materials for Planar (PA), Vertical (VA) and Tilted (TA, 0º<θ<90º) alignment. Photo-alignment materials for PA, VA and TA were also developed in parallel... Discover more


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