Bert, Tom

De Gezelle, Vincent

De Smet, Herbert

Geerinck, Peter

Van Put, Steven

Van Steenberge, Geert

English

Ghent University Academic Bibliography

Thursday March 9th  10h00 – 12h00 Registration at the conference center The Strip at the High Tech Campus Eindhoven  12h00 – 13h00 Lunch   13h00 Welcome  Opening by Dr. P.E. Wierenga  Senior Vice President Philips Research Europe - Eindhoven  13h15 Start session 1 “Electronic Paper”   13h15 – 13h35 “Development of 5.1-inch High Speed SVGA Bistable BiNem® LCD for Electronic Paper Applications” Jacques Angelé, Nemoptic  13h35 – 13h55 “Experience the brighter world of visual DNA™”    Michael Ryan, Ntera  13h55 – 14h15 “Video-speed electronic paper based on electrowetting”    Rob Hayes, Liquavista  14h15 – 14h35  “A new generation of e-readers takes off”    Alex Henzen, Irex  14h35 – 14h55 “A Computer Simulation and material for Electrophoretic Displays” Kimiya Takeshita, Mitsubishi Chemical  14h55 – 15h25  Coffee break  15h25   Start session 2 “3D Displays”  15h25 – 15h45 “Novel autostereoscopic displays with user interaction” Klaus Hopf, Fraunhofer Institute for Telecommunications (HHI)  15h45 – 16h05 “Optimization of wavelength selective parallax barrier displays” William Hopewell, NewSight Corporation  16h05 – 16h25 “Design of wide viewing freedom flat panel 2D/3D displays” Paul May, Ocuity Limited  16h25 – 16h45 “Uniformity improvement through fractional view systems” Oscar Willemsen, Philips Research Europe   16h45 – 17h05 “True 3D displaying with the Holovizio System”  Tibor Balogh, Holografika Kft.  17h05 Start session 3 “Student Award”    17h05 – 17h35 “Student award presentation”  Model for the properties and behaviour of electronic paper Tom Bert, TFCG Microsystems – Elintec, Ghent University  17h35   Informal drinks  18h30   Dinner  Estimated time: 21h00   Busses to Eindhoven  Friday March 10th  09h00   Start session 4 “Flexible Displays”  9h00 – 9h20 “TFT Backplanes on Flexible Foils: A Status Report” Nicholas Colaneri, Flexible Display Center, Arizona State University  9h20 – 9h40 “Inorganic LTPS TFTs on metal for flexible AM-OLED displays”    François Templier, CEA-LETI  9h40 – 10h00 “Organic transistors and their application in active-matrix displays” Gerwin Gelinck, Polymer Vision  10h00 – 10h20 “Polymers behind the scenes: on how structured polymers enhance your displays” Dirk J. Broer, Technical University Eindhoven, Dept. Polymer Technology (SKT)  10h20 – 10h50 Coffee break (including 10h30 the SID-MEC General meeting)  10h50   Start session 5 “Signal Processing”  10h50 – 11h10 “The impact of new display technologies on HDTV broadcasting in Europe” Richard Salmon, HDTV Systems Project  11h10 – 11h30  “Mobile Display Signal Processing”                                   Petri Nenonen, Nokia Research Center  11h30 – 11h50 “Design consideration of field sequential display”                               Erno Langendijk, Philips Research Europe  11h50 – 12h10 “Display System Architecture for LCD-TV” Gerben Hekstra, Philips Research Europe  12h10 – 12h30 “Precise measurement of the light emission temporal behaviour of flat panel displays”                                   Pierre Boher, Eldim  12h30 – 13h30  Lunch  13h30 – 14h00 Introduction MiPlaza and open innovation  Gerjan van de Walle and Hans Naus, High Tech Campus Eindhoven  14h00 – 14h05  Announcements  14h05 – 15h30 Visit MiPlaza, demonstrations and sponsor booths in sub-groups  15h30 – 16h30 Visit to the OTB company: OLED manufacturing line near Eindhoven airport  Model for the properties and behavior of electronic paperT. Bert, V. Degezelle, G. Van Steenberge, S. Van Put, P. Geerinck & H. De SmetTFCG Microsystems – ElintecGhent UniversityEPID Basic functioningE EEPID Benefits and Drawbacksz switching speedz no thresholdz no colourz electrochemical  complexityz bistabilityz lightweightz readibilityz flexibilityEPID Particles inside an EPIDPigments: optical responseMicelles: electrical responseand …EPID Optical response & delay timeEPID Electrical dependence on previous voltage3.0E-089.0E-081.5E-072.1E-070 1 2 3 4 5 6 7 8 9 10t(s)Current (A)2V from -2V2V from -5V2V from -8VCurrent peak broadens, becomes lower, later and more pronounced. EPID Need for model- Optimization of switching speed is pure chemical and physical process- Intelligent display design- Investigation of other display materialsThere is a need for better understanding of display properties and a means to model behaviorTheory Assumptions- Gaussian distribution: average value measures drift, standard deviation measures diffusion. - one-dimensional simulation: pixel dimension parallel to the field is much smaller than perpendicular.( )22)(212),( tvtvxdiffusiondiffusiondriftetvNtxn−−= πTheory Electrical currentFrom charged particle distribution:transient currents, voltage dependence, …( )dxVVtxdndtVVtxdndtdxVVtxv ),,,(),,,(,,,212121 ==∫= d dxVVtxnVVtxvVVtJ0212121 ),,,(),,,(),,(Theory Optical responseFrom pigment distribution: delay time, switching speed,…dtdddxdadd dtdxVVttxndxeVVttxntRsIVVtI ∫ ∫∫ ⎥⎦⎤⎢⎣⎡ −+−=∞−−0210))(21021 ),,,(),,,()(),,(αTheory Field Screening0 0 ( ) ( )r rdEE x n x edxε ε ε ε ρ∇ = = =2118*121)(⎟⎟⎠⎞⎜⎜⎝⎛ +≈∆DVcstQtDNQtEπεεReduce charge to increase field strength: centrifugationTheory Delay time( )22)(2121)( delaydelayd Ttdelayd etRσσπ−−=2114*delaysTV QN Vd cstµ πε∆=−Theory Physical ParametersµqkTD =RQπηµ 6=Link between model parameters (diffusion velocity, drift velocity,…) and real parameters (viscosity, temperature, charge, pigment radius,…)Results Dependence on applied voltage3.0E-081.8E-073.3E-074.8E-070 1 2 3 4 5 6 7 8 9 10t (s)Current (A)0,5V from -10V2V from -10V10V from -10VResults Dependence on previous voltage3.0E-089.0E-081.5E-072.1E-070 1 2 3 4 5 6 7 8 9 10t(s)Current (A)2V from -2V2V from -5V2V from -8VResults Optical responseResults Temperature dependence-10-50510150 100 200 300 400 500Time (a.u.)Current (a.u.)35404550556011121 2 2 1expexpexpexpexp exp expEkTETv TE kTkTENkTE E E EkT kT kTdelayT Tη ⎛ ⎞≈ ⎜ ⎟⎝ ⎠⎛ ⎞≈ = −⎜ ⎟⎛ ⎞ ⎝ ⎠⎜ ⎟⎝ ⎠⎛ ⎞≈ −⎜ ⎟⎝ ⎠−⎛ ⎞ ⎛ ⎞ ⎛ ⎞− −⎜ ⎟ ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠ ⎝ ⎠≈ =ConclusionElectrical & Optical simulation of EPIDsPhysical, measurable parameters are usedImportance of field screening and centrifugationÆ Optimize displays production

Model for the properties and behavior of electronic paper

https://biblio.ugent.be/publication/374624/file/1038081

Model for the properties and behavior of electronic paper

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Ghent University Academic Bibliography