Patents by Inventor Jonathan C. Ruth

Jonathan C. Ruth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6278429
    Abstract: A driving circuit for a reflective bistable cholesteric liquid crystal display which includes one substrate having a plurality of column or segment electrodes opposed by another substrate having a plurality of row or common electrodes. The intersecting column and row electrodes with the cholesteric material therebetween form a plurality of pixels. The driving circuit selectively applies a voltage to the row and column electrodes to control the appearance of the cholesteric material. In particular, the driving circuit includes at least one common driver coupled to respective common electrodes with each common driver having a first and a second common frame switch with corresponding high or low inputs. The first and second common frame switches are linked to one another by a common frame line.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: August 21, 2001
    Assignee: Kent State University
    Inventors: Jonathan C. Ruth, Richard Hewitt, Philip J. Bos