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Plasma Display and Excimer Lamps

#3098


High-Effective Methods of Investigation and Modelling of the Barrier Discharges for Optimization of Plasma Display Panels and Excimer Lamps

Tech Area / Field

  • PHY-PLS/Plasma Physics/Physics

Status
8 Project completed

Registration date
12.08.2004

Completion date
28.12.2009

Senior Project Manager
Safronova O N

Leading Institute
ITMO, Russia, St Petersburg

Supporting institutes

  • VNIIEF, Russia, N. Novgorod reg., Sarov\nKyrgyz-Russian Slavonic University, Kyrgyzstan, Bishkek\nVavilov State Optical Institute (GOI), Russia, St Petersburg

Collaborators

  • Hokkaido University / Graduate School of Engineering, Japan, Sapporo\nTechnische Universität München / Physik Department E-12, Germany, Garching\nNagoya Institute of Technology, Japan, Nagoya\nCNRS / Centre de Physique des Plasmas et de leurs Applications de Toulouse, France, Toulouse

Project summary

The proposed project suggests carrying out investigations of barrier discharges in inert gases and inert-halide mixtures as well as developing high-efficient methods of these barrier discharges modelling and diagnostics for investigation of plasma display panels (PDP) cells laboratory models and excimer lamps (excilamps) laboratory samples.
Plasma displays panels on the basis of the barrier discharges in the mixtures of inert gases are among the most promising technologies for developing flat-screen monitors of high resolution. According to the Stanford Resources (http://www.stanfordresources.com/flat/plasma.html) during the following decade sizeable market ($10B annually) will be developed for creation of large display and high resolution flat-screen TV-sets (HDTV) based on plasma display panels. However, the radiation efficiency of barrier discharge achieved in separate PDP cells at present time is rather low, about one percent. Increasing of radiative efficiency of PDP up to several percents would rather advance their optimisation. Other urgent problems in PDP improvement are increasing of their exploitation time and prime cost reduction .
Dielectric barrier discharges excimer lamps (DBD) have a high radiative coefficient of efficiency (up to 40% ), high radiation intensity and simplicity of a construction, that ensure their widespread application: for ultraviolet cleaning of surfaces in microelectronics and optics, as the light sources in xerographic copying instruments, for photo-treatment of polymer surfaces, for molecules O2 and H2O photo-dissociation, for decomposing of toxic materials etc. . The most important characteristics of DBD are: ignition ability at high gas pressure (about atmospheric), efficiency and intensity of radiation, and long exploitation period. One of the principal tasks of the project is further optimization of the indicated barrier discharge parameters.
The project intends carrying out interconnected theoretical and experimental investigations of barrier excilamp models and PDP cells applying novel effective scientific methods. These investigations would allow to determine basic parameters of barrier discharge and their dynamics in dependence on magnitude, frequency and pulses duration of supplied voltage, pressure and gas composition, geometric parameters and other characteristics, to indicate ways of excimer lamps and plasma display panels optimization, to develop the improved patterns of both excimer lamps and plasma display panels cells.
The existing barrier discharges computer models are based either on hydrodynamic and hybrid models, or start from the “first principles” (Boltzmann and Maxwell equations). They use rather slow statistical methods, which are not enough suitable for design and optimization. This project intends to develop methods and programs for analysis of plasma displays operation (direct current and alternating current) as well as excimer lamps which use the developed lately methods of ‘semi-analytical computer simulation’. This approach developed by the authors and becoming increasingly popular now, is based on fluid description of ions and kinetic description of non-local electrons, that allow to obtain the degree of details
to obtain not only fundamental results: achieving a new level of understanding of barrier discharge physics and regularities of occurring spatio-temporal structures in them, but also the applied ones, answering civil needs: the project will allow to develop more effective, power-saving, ecologically clean, mercury-free sources of the light based on excilamps, to investigate and to improve operation processes of TV sets plasma display panels cells laboratory models, to find new possibilities of DBD application in the peace purposes (disinfection, pollution decomposition).
Both the project participants and collaborators have a number of priority developments in the area of experimental researches in physics of gas discharge and its characteristics modelling, which were published in leading scientific journals and received positive responses in scientific publications . The high quality of the project participants, and considerable preliminary work in this direction will secure successful execution of the project.
Weapons scientists and experts from Russia and Kyrgyzstan which part is 80%, will participate in the project implementation. Close contact with the collaborators (Japan, USA, Germany, France) will promote integration of scientists from Russia and Kyrgyzstan into international scientific community. The project will contribute to solution of international technical problems in development of technologies and fabrication of plasma display panels and excimer lamps of high emission efficiency. As a result of the project implementation the project participants will acquire stable scientific communications, skills of commercial activity, will require less of financial help from ISTC or government. Thus realization of the project will support the transition to the market economy corresponding to civil needs. The project execution will also promote improving research and educational work of All-Russia Scientific Centre S.I. Vavilov State Optical Institute (SOI), of the All-Russian Scientific-Research Institute of Experimental Physics of the Russian Federal Nuclear Centre (RFNC-VNIIEF), of Kyrgyz –Russian Slavic University (KRSU).
The duration of the project implementation is planned to be three years. Total supposed work is going to be pided into 9 tasks, including development of physical, chemical and optical models of the barrier discharge, application of “semi-analytical computer simulation” principles, development of fast program codes, simulation of the barrier discharges in realistic geometry, experimental investigations, derivation of scaling laws, study of regularities of spatio-temporal structures formation, analysis of the developed modelling methods efficiency and preparation of the reports. The involvement in the project implementation of three research teams – from SOI (Russia), RFNC-VNIIEF (Russia) and KRSU (Kyrgyzstan) is stimulated by difficulty and major bulk of the project goals. Their common mutually complementing experience of previous researches enables to count on successful accomplishment of above tasks and achievement of declared aims.

Participation of foreign collaborators (Japan, USA, Germany,France) will also promote successful implementation of the project. The project intends testing of developed light sources (Germany, France) and evaluating the program modules, developed during the project implementation (Japan, USA). The foreign collaborators will participate in the management of the project (Germany, Japan), they will be given comments to the technical reports (quarter, annual, final, etc.); information exchange, tutorials, joint seminars and workshops are scheduled.


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