Through the pas years we took part in several projects and collaborations with other group. The following gives a list of projects which are finished:
The OLLA project is an Integrated Project (IP), funded by the IST program of the European Commission's 6th Framework. OLLA is started on October 1st, 2004, and will run for 45 months.
The OLLA consortium consists of 24 partners from 8 European countries. Each partner is a world-renowned specialist in its particular field of science and technology. The partners have gathered to propel Europe to the forefront of organic LED's for ICT (e.g. display) and Lighting applications (e.g. novel OLED light sources).
Based on the experience and expertise in organic LED's in Europe, whereby many research groups and companies have achieved an important standing in the display world, OLLA sets out to tackle a much larger and classically European dominated world market of Lighting.
Through OLLA the necessary breakthroughs in various fields of the technology (materials, deposition technology, device technology and application requirements) will be achieved in order to enable manufacturing and selling of products to the lighting markets as well as advanced components to all OLED manufacturers worldwide. Therefore, OLLA will assist in securing the future of many jobs in the Lighting industry, as well as in creating a much larger demand for products from the strong component industry in Europe, such as high-value new materials and manufacturing machines.
Only a concentrated effort combining the necessary breakthroughs in time in the various areas involved will ensure a significant progress and thus bigger chances of sustaining a strong lighting industry in Europe in the face of the disruptive solid-state lighting revolution. For all these reasons, OLLA is an urgently necessary investment in the future of European industry. Mainly because Japan and the USA have already started massive public funding programs to support industrial-university cooperation to achieve a dominant position in OLED Lighting
The aim of the project is to develop a method to improve active-matrix liquid-crystal displays (LCDs) for monitor applications in terms of: transmission efficiency, viewing angle and speed. The functional opto-electronic materials in these devices are liquid crystals (LCs). There are several LC effects that can be applied in displays. Beforehand it is not clear which effect is the most useful.
To develop the best LCD configuration for a certain application one would like to do predictive calculations. Until recently the available one-dimensional tools were good enough. For predicting the image quality, however, it is necessary to know the director pattern (at pixel scale) of the LC molecules in three dimensions (3D).
In this project we want to make a major step forwards by developing tools for full 3D finite-element modelling of the director pattern and a 3D description of the optics and the ion distribution.
Prototype software based on these tools will be used to obtain theoretical results and to compare them with experiments. Based on the above findings LCD test cells and/or small displays will be made. It is our intention to use them as starting points for further development of new monitor displays. An important end result of the project will be a commercial, user-friendly
three-dimensional modelling package to predict LCD properties.
The final review meeting of this project was held in January 2003, at this occasion a picture (above) was taken of the team leaders of all work packages.
Orchis is a network of 12 European Universities working on "Optical Research of Chiral Systems". The network programme started on Jan 1, 1998 and lasts for 3 years. The network intends to optimize smectic liquid crystals for display applications, to apply the principles on which their operation is based to nematic liquid crystals as well, and investigate the new opportunities offered by the self-organizing capacity of liquid crystals.
In particular, it will further develop analogue grey scale capabilities of smectic LCs, optimize addressing signals, eliminate the influence of ionic transport and develop their use as spatial light modulators. The smectic principles of multiline selection and bistability will be exploited to improve applications of nematic LCs. Viewing liquid crystals as self-organizing systems may have applications in a much wider range than displays, such as ordered solid films for alignment, for pyroelectric and piezoelectric detectors, for microwaves, for ferroelectric and antiferroelectric devices. The network will execute its task in an interdisciplinary environment of electrical engineers, physicists and chemists.