Patents Assigned to Visitret Displays Ou
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Patent number: 8947762Abstract: High display duty ratio and fast optical response electrophoretic display technology is presented by using an anti-ferroelectric coupling torque. The invention also consequently enables fine pixel pitch resolution by introducing photo lithography based switching element preparation method. Newly introduced casting film method for optical switching element preparation enables extremely fine size of switching element based on current well-established flat panel display volume manufacturing process.Type: GrantFiled: January 8, 2013Date of Patent: February 3, 2015Assignee: Visitret Displays OUInventors: Akihiro Mochizuki, Madis-Marius Vahtre, Laura Pait
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Publication number: 20140153080Abstract: This invention generally relates to the use of dipole charged balls having differently coloured hemispheres (bichromal balls) in twisting ball displays comprising a pair of planar addressing electrodes and the space between these electrodes that is filled with a thixotropic liquid into which has been dispersed a plurality of electrically charged and optically anisotropic rotatable elements.Type: ApplicationFiled: June 6, 2010Publication date: June 5, 2014Applicant: VISITRET DISPLAYS OÜInventors: Madis-Marius Vahtre, Nicholas K. Sheridon, Juri LIIV
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Patent number: 8681417Abstract: New type electrophoretic display mode is disclosed in this invention. Theoretical analysis of dielectric materials as optical switching media leads to much stronger driving torque in an electrophoresis environment. Introduction of ferroelectric coupling torque in an electrophoresis phenomenon, extremely fast electro-optical response is realized. This extremely fast optical response enables full motion video image and full-color reproduction on an electrophoretic display. These two advanced functions makes an electrophoretic display as an extremely power saving full functional display.Type: GrantFiled: December 27, 2011Date of Patent: March 25, 2014Assignee: Visitret Displays OUInventors: Akihiro Mochizuki, Laura Päit, Madis Marius Vahtre
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Publication number: 20130182311Abstract: New type of electrophoretic display mode is disclosed in this Invention. Introducing transparent medium in an electrophoresis technology, diversity application type of full motion video, full-color image capable electrophoretic display system is realized. New concept of optical switching element based on ferroelectric coupling torque enables both crisp full motion video image and non-power based still image. This display configuration is also effective to apply large billboard displays with significant power saving.Type: ApplicationFiled: January 12, 2012Publication date: July 18, 2013Applicant: Visitret Displays OUInventors: Akihiro Mochizuki, Laura Päit, Madis Marius Vahtre
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Publication number: 20130163066Abstract: New type electrophoretic display mode is disclosed in this invention. Theoretical analysis of dielectric materials as optical switching media leads to much stronger driving torque in an electrophoresis environment. Introduction of ferroelectric coupling torque in an electrophoresis phenomenon, extremely fast electro-optical response is realized. This extremely fast optical response enables full motion video image and full-color reproduction on an electrophoretic display. These two advanced functions makes an electrophoretic display as an extremely power saving full functional display.Type: ApplicationFiled: December 27, 2011Publication date: June 27, 2013Applicant: Visitret Displays OUInventors: Akihiro MOCHIZUKI, Laura PÄIT, Madis Marius VAHTRE
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Patent number: 8383010Abstract: An active element that is based on an electret emulsion and that comprises particles of pre-polarized electret material as emulsion in neutral liquid and both poles of the particles are colored with different colors. For producing a neutral carrier liquid for the active element liquid fluorine carbon is used. For producing electret material for the active element solid polymerised fluorine carbon or electret wax is used. The active element is used for producing visual matrix displays, indicators, surfaces and surface coatings that change color by the application of a control voltage.Type: GrantFiled: September 7, 2007Date of Patent: February 26, 2013Assignee: Visitret Displays OuInventor: Jüri Liiv
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Publication number: 20100038600Abstract: An active element that is based on an electret emulsion and that comprises particles of pre-polarized electret material as emulsion in neutral liquid and both poles of the particles are coloured with different colours. For producing a neutral carrier liquid for the active element liquid fluorine carbon is used. For producing electret material for the active element solid polymerised fluorine carbon or electret wax is used. The active element is used for producing visual matrix displays, indicators, surfaces and surface coatings that change colour by the application of a control voltage.Type: ApplicationFiled: September 7, 2007Publication date: February 18, 2010Applicant: Visitret Displays OÜInventor: Jüri Liiv