Electronic Paper Systems, Films, and Materials
Xerox’s electronic paper (e-paper) solutions combine unique microsphere materials, encapsulation, dispersion, and packaging architectures. The technology was originally developed by the world renowned Xerox Palo Alto research Center (PARC) and Xerox Research Center Canada (XRCC). Xerox is now making the following patents encompassing this technology available for purchase or license.
A complete e-paper system solution was developed to support digital signage applications. The patents provide the fundamental building blocks for a standalone low power bi-stable display platform, and have been cited extensively by e-paper market leaders and material manufacturers. Many of the patents are far reaching in nature, encompassing uses beyond strictly e-paper applications.
Technology DescriptionXerox holds early, ground breaking patents that cover systems, methods, and materials to support the development of inexpensive, low power, bi-stable, digitally addressable systems. Descriptions of some of the technology and patent areas are provided below:
Microspheres, Encapsulations and DispersionsXerox developed several new processes for packaging architectures and creation of specialized microspheres. These include Emulsion Aggregation (EA) process and microsphere production by alternative processes such as continuous spinning. These processes originated from the investigation of new methods for producing and dispersing microspheres required for the development of electrical/magnetic and photo reactive bi-stable low power e-paper materials.
Patents include encapsulation materials and processes such as vapor deposition and polymerization with a vinyl monomer for hollow, filled, polyester, polyethylene microspheres. The technology includes specialized surface and internal additives for tailoring electrical, magnetic, colorant and mechanical properties. Unique encapsulation materials and techniques allow for tailored wall materials, thicknesses, additives, and fill properties.
The portfolio also includes techniques and methods for dispersal of microcapsules into films and mediums. For further information on EA microspheres see the following link.
Displays and FilmsXerox is offering patents which describe methods, apparatus and systems associated with e-paper applications and manufacturing such as: ambient powered display devices, two-sided flexible displays, and robust interconnects for conductive substrates. The patents available relate to particles and liquid materials, films and systems catering to e-paper systems. Other display patents, as well as specialty film patents, are available.
Alterable Display for Flexible Wearable MediaXerox has developed systems, methods and apparatus for creating a more secure, informative, low cost display for removable memory media, such as a compact disk. The alterable display is physically attached to removable media for providing tracking, personalization and other information pertaining to the media. Furthermore, the display apparatus requires no direct connection to any other circuitry.
Externally Addressable Display SystemsXerox has systems, methods and apparatus patents for creating and modifying e-paper displays and films through external means such as an electrical wand, print head or a stylus.
Conductive Adhesive FilmsXerox has developed systems for creating e-paper displays and films with truly unique characteristics and designs. Included are patents related to: methods and apparatus for making high-performance, robust, adhesive-enhanced conductive film materials, which can be applied to many other film and laminate technologies, such as solar and electrically addressable films.
Lens ModulationBorn out of the need for light responsive and addressable display media, Xerox developed devices and apparatus, supported by patents such as US 5777782 for light modulating lenses and films. These lenses and films are formed from a plurality of optically anisotropic particles that respond to a flux of optical energy.
Digital Signage AdvertisingThese broadly written patents are structured for dynamic updating and control of digital sign applications and systems, and include direction finding systems, incorporating electronically-readable tags, mobile controllers and electronic signage. See for example, US 7375634.
The systems, methods and apparatus described in the patents can help define/generate an integrated, actively responsive and dynamic information sharing experience. This group of patents can provide the backbone for an improved and efficient user experience such as part-picking, emergency directions, and in-store shopping.
Electronic Paper SecurityEnhanced security features for digital media can be achieved with integration of Xerox e-paper methods and display apparatus and tamper detection systems. These patents incorporate multiple e-paper sheet overlays and pixel orientations as exemplified by US patent 6303211.
BenefitsTechnology encompassed by these patents
Intellectual Property SummaryThe Xerox e-paper portfolio includes over 35 active US patents and applications. The representative patents below have been cited over 150 times by more than 20 companies including: Nokia Corporation, E Ink Corporation, Honeywell International Inc., Brother International Corporation, Intel Corporation, Research In Motion Limited, Motorola, Inc., Bayer Schering Pharma AG, Seiko Epson Corporation, 3M Innovative Properties Company, Sony Corporation, Cabot Corporation, CBRITE Inc., and NOVUS Partners LLC.
For Licensing InformationTo learn more about licensing Xerox Electronic Paper Systems, Films, and Materials technology.