CopyTele, Inc. Patent applications |
Patent application number | Title | Published |
20140240211 | Dual Particle Electrophoretic Display and Method of Manufacturing Same - A dual particle electrophoretic display and a method for manufacturing same are disclosed. The display comprises a back substrate and a transparent substrate forming a cavity therebetween. The transparent substrate including one or more cathode electrodes forming a plurality of electronically and selectively addressable pixels; one or more side walls extending from the transparent substrate, the side walls defining corresponding pixel cells, wherein a plurality of electrophoretic particles are contained in each cell and a substantially clear suspension fluid is distributed throughout the cavity by a gap formed between the site walls. A color or shade of the pixels within the display is determined by applying a driving voltage to the pixels of based on a desired level of Gray scale coding. | 08-28-2014 |
20090115756 | Matrix phosphor cold cathode display employing ion activated phosphors - A vacuum flat panel display has a plurality of associated pixels each having a phosphor and nanotubes and a surrounding control frame. When a pixel voltage is negative relative to the frame then a plurality of electrons emitted by the nanotubes are attracted to the frame whereby electrons strike gas atoms in transit to the frame and produce ions and additional electrons; wherein said ions returning to the pixel result in phosphor illumination. The invention is also a process for illuminating a phosphor in a flat panel display comprising: a plurality of associated pixels each having a phosphor and nanotubes; applying a pixel voltage negative relative to a frame; attracting to the frame a plurality of electrons emitted by the nanotubes; whereby electrons strike atoms of a gas in transit to the frame producing ions resulting in phosphor illumination. | 05-07-2009 |
20090102389 | Matrix phosphor cold cathode display employing secondary emission - A vacuum flat panel display including: a plurality of electrically addressable pixels; a plurality of thin-film transistor driver circuits each being electrically coupled to an associated at least one of the pixels, respectively; a passivating layer on the thin-film transistor driver circuits and at least partially around the pixels; a conductive frame on the passivating layer, said frame and pixel area coated with an insulator; and, a plurality of cathode emitters are deposited on the coated frame while phosphor is deposited on the coated pixel; wherein, exciting the cathode emitters and addressing one of the pixels using the associated driver circuit causes the emitted electrons to induce one of the pixels to emit light. By introducing a noble gas or mixture, and a ML layer having a DC, AC or pulsed voltage applied thereto, one creates a plasma to form a sheath boundary at the insulator causing electron multiplication and increased illumination. | 04-23-2009 |