Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8134581 | Controlled gap states for liquid crystal displays The present invention relates to a bistable matrix-addressable display element comprising a substrate, a bistable electrically modulated imaging layer having a reflection maximum, at least one conductor, and at least one field-spreading layer between said bistable e... | 03/13/2012 |
| 8102362 | Indexing writehead for bistable media A system and method for writing bistable media with a writehead is described. The media has two or more discrete write areas, each area defined by at least one electrical contact, and the media further has at least one alignment feature positioned with regard to one... | 01/24/2012 |
| 7999832 | Controlled gap states for liquid crystal displays The present invention relates to a bistable matrix-addressable display element comprising a substrate, a bistable electrically modulated imaging layer having a reflection maximum, at least one conductor, and at least one field-spreading layer between said bistable e... | 08/16/2011 |
| 7755610 | Writing device for bistable material with improved flexible material alignment features A system and method for writing bistable media is described, wherein the media has at least one through hole that interacts with at least one protrusion on a writer to align the media with the writer. ... | 07/13/2010 |
| 7683855 | Electronic signage A display, a signage system including the display, and methods of writing the display, are described, wherein the system includes at least one display, at least one writing unit, and at least one holder. Each display includes at least one bi-stable display element a... | 03/23/2010 |
| 7507449 | Displays with low driving voltage and anisotropic particles The present invention relates to a high contrast reflective display comprising a substrate, at least one electronically modulated imaging layer, wherein the electronically modulated imaging layer comprises a uniformly thick, close-packed, ordered monolayer of domain... | 03/24/2009 |
| 7463217 | Scrolling electronic signage A display, a signage system including the display, and methods of writing the display, are described, wherein the system includes at least one looped scroll of bistable display media and at least one electronic writehead. The entire display can be written by using t... | 12/09/2008 |
| 7432899 | Driving scheme for cholesteric liquid crystal display A drive scheme is described for a display capable of gray scale. Multiple two-level pulses are used in conjunction with dynamic relaxation techniques to write pixels ON or OFF and to adjust the gray level of pixels. Only two voltage levels are used, a maximum level ... | 10/07/2008 |
| 7131584 | Apparatus and means for updating a memory display A display system includes a light writable display associated with an identification code and arranged to receive an image wise pattern of light to form an image on the display; a display writer for producing the image wise pattern of light for writing the image on ... | 11/07/2006 |
| 7116287 | Drive for cholesteric liquid crystal displays Apparatus for driving a cholesteric liquid crystal display wherein the display includes cholesteric liquid crystals having a first planar reflective state and a second transparent focal conic state, which is respectively responsive to different applied fields; an ad... | 10/03/2006 |
