KENT, OH, United States
KENT, OH, United States

Time filter

Source Type

Patent
Kent Displays, Inc. | Date: 2015-12-16

A multicolored pressure sensitive liquid crystal device includes a first transparent substrate that is flexible on which pressure is applied and a second substrate spaced apart from the first substrate. Also included are electrically conductive layers, one of which is in contact with the first substrate and is transparent and another of which is in contact with the second substrate. The electrically conductive layers are separated from each other. Also included is a pressure sensitive liquid crystal layer including cholesteric liquid crystal disposed between the electrically conductive layers. The liquid crystal layer includes at least first and second color regions. The first color region reflects light of a first color and the second color region reflects light of a second color. The pressure applied to the substrate results in a change in reflectance of the liquid crystal. In another aspect, the liquid crystal layer can include at least first and second regions that differ from each other in terms of a characteristic selected from the group consisting of wavelength of reflection, reflectivity, linewidth, electrooptic response, pressure sensitivity and combinations thereof.


Patent
Kent Displays, Inc. | Date: 2014-04-02

A liquid crystal display with an identifier such as a watermark, serial number, logo or other graphic design, is disclosed. The identifiers can be read electronically or with the human eye. Methods are described for fabricating identifiers on cholesteric writing tablets in particular, with varying shades of gray and hence different degrees of visibility. The identifiers are permanent and not erased when a liquid crystal image on the display is erased.


Grant
Agency: National Science Foundation | Branch: | Program: STTR | Phase: Phase I | Award Amount: 224.95K | Year: 2013

The innovation is the development of a new class of devices known as eWriters for classroom use as both a sustainable paper replacement technology and an effective tool for student/teacher interaction. These devices address the problem of achieving a sustainable world by satisfying the human need for making and recording handwritten images without the environmental harm associated with the production of paper. They are widely accepted based on a writing experience which closely mimics the feel of pen and paper. The paperless classroom workflow will require tools for automatically collecting assignments and electronically grading them. Virtual whiteboards enabled by the devices will be created to enhance student/teacher interaction. The project focuses on math and science education, areas that are difficult to service with other device types, such as ones requiring keyboard input, due to the basic nature of the work, special symbols, and formatting requirements. However, the devices themselves are applicable to a broader range of subject areas, including art, where it is noteworthy that some artists have already adopted the eWriters for their medium. As eWriters are a new technology, the project will be among the first to explore their transformative potential as applied to education. The broader/commercial impact begins with the societal benefit of significantly reduced paper consumption in schools and later extends into the workplace as increasing numbers of students enter the workforce prepared to perform their jobs without the use of paper. Also important is the new tool that eWriters provide to teachers, particularly through virtual whiteboards that permit wireless interaction between a teacher and their students. Capable teachers will find new ways of reaching students in subject areas as varied as art and science. It is hard to overstate the importance of this at a time of flagging student test scores and academic competitiveness. Commercially, the eWriter display technology has been developed and manufactured in the United States, with investments in roll-to-roll display production facilities in Kent, Ohio. Development of the technology into an educational tool therefore assists in sustaining the domestic economy, in addition to the environment. The existing eWriter product, distribution, retail channels, and marketing give a strong platform for the educational development to be commercialized. The initial success in educational settings shows strong promise and potential for commercialization success in this field.


Patent
Kent Displays, Inc. | Date: 2015-04-03

An electronic display includes electrically conductive layers. An active layer is disposed between adjacent electrically conductive layers. The active layer includes cholesteric liquid crystal material. At least one transparent front substrate is disposed adjacent one of the electrically conductive layers near a front of the display. A semitransparent back layer absorbs light that passes through the active layer, reflects grey light or light of a color and is light transmitting. Electronic circuitry applies a voltage to the conductive layers that enables at least one of erasing or writing of the active layer.


Grant
Agency: NSF | Branch: Standard Grant | Program: | Phase: | Award Amount: 224.95K | Year: 2013

The innovation is the development of a new class of devices known as eWriters for classroom use as both a sustainable paper replacement technology and an effective tool for student/teacher interaction. These devices address the problem of achieving a sustainable world by satisfying the human need for making and recording handwritten images without the environmental harm associated with the production of paper. They are widely accepted based on a writing experience which closely mimics the feel of pen and paper. The paperless classroom workflow will require tools for automatically collecting assignments and electronically grading them. Virtual whiteboards enabled by the devices will be created to enhance student/teacher interaction. The project focuses on math and science education, areas that are difficult to service with other device types, such as ones requiring keyboard input, due to the basic nature of the work, special symbols, and formatting requirements. However, the devices themselves are applicable to a broader range of subject areas, including art, where it is noteworthy that some artists have already adopted the eWriters for their medium. As eWriters are a new technology, the project will be among the first to explore their transformative potential as applied to education.

The broader/commercial impact begins with the societal benefit of significantly reduced paper consumption in schools and later extends into the workplace as increasing numbers of students enter the workforce prepared to perform their jobs without the use of paper. Also important is the new tool that eWriters provide to teachers, particularly through virtual whiteboards that permit wireless interaction between a teacher and their students. Capable teachers will find new ways of reaching students in subject areas as varied as art and science. It is hard to overstate the importance of this at a time of flagging student test scores and academic competitiveness. Commercially, the eWriter display technology has been developed and manufactured in the United States, with investments in roll-to-roll display production facilities in Kent, Ohio. Development of the technology into an educational tool therefore assists in sustaining the domestic economy, in addition to the environment. The existing eWriter product, distribution, retail channels, and marketing give a strong platform for the educational development to be commercialized. The initial success in educational settings shows strong promise and potential for commercialization success in this field.


Grant
Agency: NSF | Branch: Standard Grant | Program: | Phase: STTR PHASE II | Award Amount: 722.04K | Year: 2015

This Small Business Technology Transfer (STTR) Phase II project develops eWriter devices for classroom use as a sustainable paper replacement technology and an effective tool for student-teacher interaction. The eWriters provide a paper-like writing experience and electronically capture, store, and transfer handwritten text and images. For education, eWriters introduce a sustainable paper replacement technology at a lower cost than other classroom technologies. The eWriters enable handwritten student work to be wirelessly uploaded to teachers and to virtual whiteboards. Positive societal impacts come from improved teaching methods and student-teacher interactions, particularly for high quality science, technology, engineering and mathematics (STEM) pedagogy, where handwritten notes are advantageous. The most immediate societal benefit of educational eWriters is significant reduction in paper usage, carbon footprints, and costs for schools. Expanding domestic high tech roll-to-roll production of eWriters benefits the flexible electronics supply chain and materials development. The eWriter display technology, developed and manufactured in Ohio, is exported around the world. This project helps sustain both the U.S. economy and the environment. Existing eWriter product, distribution, retail channels, and marketing give a strong platform for commercialization. This project impacts numerous and far reaching areas in education, environmental improvement, domestic manufacturing, materials improvements, and process development.

This project enables digital writing for K-12 and post-secondary classrooms along with a seamless information and communication system so teachers and students can effectively exchange handwritten work digitally and reduce paper use. The research objectives include the development of eWriter technologies (ruggedness, performance, design), the development of software ecosystems for classrooms (use models, user interface systems), and the development of usage strategies for new teaching techniques. Multidisciplinary methods will be used involving researchers in education, liquid crystal display technology, engineering, and software development to successfully achieve project objectives. Experts in the application of technology in education will develop and evaluate eWriter usage strategies for improved instruction and student performance depending on grade level and teaching style. This new type of education technology has tremendous and far reaching impacts in areas of pedagogical techniques, flexible electronics, liquid crystal and polymeric materials, and environmental sustainability. The anticipated results are a suite of eWriter devices and systems to be deployed in K-12 and post-secondary education. The lead organization will commercialize these new products into educational markets leveraging existing sales and marketing infrastructure.


Grant
Agency: National Science Foundation | Branch: | Program: STTR | Phase: Phase II | Award Amount: 722.04K | Year: 2015

This Small Business Technology Transfer (STTR) Phase II project develops eWriter devices for classroom use as a sustainable paper replacement technology and an effective tool for student-teacher interaction. The eWriters provide a paper-like writing experience and electronically capture, store, and transfer handwritten text and images. For education, eWriters introduce a sustainable paper replacement technology at a lower cost than other classroom technologies. The eWriters enable handwritten student work to be wirelessly uploaded to teachers and to virtual whiteboards. Positive societal impacts come from improved teaching methods and student-teacher interactions, particularly for high quality science, technology, engineering and mathematics (STEM) pedagogy, where handwritten notes are advantageous. The most immediate societal benefit of educational eWriters is significant reduction in paper usage, carbon footprints, and costs for schools. Expanding domestic high tech roll-to-roll production of eWriters benefits the flexible electronics supply chain and materials development. The eWriter display technology, developed and manufactured in Ohio, is exported around the world. This project helps sustain both the U.S. economy and the environment. Existing eWriter product, distribution, retail channels, and marketing give a strong platform for commercialization. This project impacts numerous and far reaching areas in education, environmental improvement, domestic manufacturing, materials improvements, and process development. This project enables digital writing for K-12 and post-secondary classrooms along with a seamless information and communication system so teachers and students can effectively exchange handwritten work digitally and reduce paper use. The research objectives include the development of eWriter technologies (ruggedness, performance, design), the development of software ecosystems for classrooms (use models, user interface systems), and the development of usage strategies for new teaching techniques. Multidisciplinary methods will be used involving researchers in education, liquid crystal display technology, engineering, and software development to successfully achieve project objectives. Experts in the application of technology in education will develop and evaluate eWriter usage strategies for improved instruction and student performance depending on grade level and teaching style. This new type of education technology has tremendous and far reaching impacts in areas of pedagogical techniques, flexible electronics, liquid crystal and polymeric materials, and environmental sustainability. The anticipated results are a suite of eWriter devices and systems to be deployed in K-12 and post-secondary education. The lead organization will commercialize these new products into educational markets leveraging existing sales and marketing infrastructure.


Patent
Kent State University and Kent Displays, Inc. | Date: 2014-01-06

A liquid crystal composition comprising a chiral dopant compound represented by the following structure (Structure 1):


Patent
Kent Displays, Inc. | Date: 2016-09-29

Disclosed is liquid crystal paper and an erasing device that is not permanently connected to the liquid crystal paper. A sheet of liquid crystal paper includes flexible polymeric substrates. A polymer network or a spacer network, in which bistable cholesteric reflective liquid crystal material is dispersed, is disposed between two of the substrates. Optional alignment layers or optional electrically conductive layers sandwich the liquid crystal material therebetween. An optional layer of light absorbing material is disposed near one of the substrates. Application of pressure to an upper substrate changes a focal conic nonreflective texture of the liquid crystal material to a reflective planar texture. The erasing device applies a voltage or heat for erasing the paper by changing the reflective planar texture to the focal conic nonreflective texture.


Patent
Kent Displays, Inc. | Date: 2016-05-20

An enhanced brightness cholesteric liquid crystal eWriter device for writing and drawing includes substrates and electrically conductive layers disposed on the substrates. There is a gap, d, between the electrically conductive layers. Polymer dispersed cholesteric liquid crystal material is disposed in the gap. The polymer dispersed cholesteric liquid crystal material exhibits a written reflectance, R, which occurs in response to pressure applied to one of the substrates that changes reflectance of the cholesteric liquid crystal material. The device follows the relationship Rd1d2, where Rd2 is a written reflectance of an eWriter device of gap d2 and Rd1 is written reflectance of another eWriter device of gap d1. Further, a cholesteric liquid crystal eWriter device includes a layer of cholesteric liquid crystal material in a cell gap, d, wherein d<3 m. Also included is an enhanced brightness eWriter with other features and a method of constructing an enhanced brightness, cholesteric liquid crystal eWriter.

Loading Kent Displays, Inc. collaborators
Loading Kent Displays, Inc. collaborators