U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Tribo-addressed and tribo-suppressed electric paper

Patent 6243058 Issued on June 5, 2001. Estimated Expiration Date: Icon_subject March 25, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Twisting ball panel display
Patent #: 4126854
Issued on: 11/21/1978
Inventor: Sheridon

Method of making a twisting ball panel display
Patent #: 4143103
Issued on: 03/06/1979
Inventor: Sheridon

Writing system including paper-like digitally addressed media and addressing device therefor
Patent #: 5389945
Issued on: 02/14/1995
Inventor: Sheridon

Multithreshold addressing of a twisting ball display Patent #: 5739801
Issued on: 04/14/1998
Inventor: Sheridon

Inventors

Assignee

Application

No. 09/275880 filed on 03/25/1999

US Classes:

345/84, Light-controlling display elements345/85Electroscopic (e.g., movable electrodes or electrostatic elements)

Examiners

Primary: Saras, Steven
Assistant: Kumar, Srilakshmi K

Attorney, Agent or Firm

International Classes

G09F 9/37 (20060101)
G02B 26/02 (20060101)

Abstract

A display is provided with an insulative layer whose electrical properties have been selected so that the display can be addressed by the effects of triboelectrically generated charges and thus requires no stylus or special writing utensil. Thus, the display can be addressed by dragging a finger across the display. Alternately, the display is provided with an insulafive layer whoes electrical properties have been selected so that the display is addressed with a stylus and is immune from the effects of stray riboelectrically generated charges.

Other References

  • Anne Chiang et al., "A Stylus Writable Electrophoretic Display Device", SID 79 Digest
  • N.K. Sheridon et al., "The Gyricon--A Twisting Ball Display", Proceeding of the S.I.D., vol. 18/3, Third and Fourth Quarters, pp. 289-293, 1977
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