Writeable electrophoretic displays including sensing circuits and styli configured to interact with sensing circuits

US10324577B2 · kind B2 · utility

Assignee

• E Ink Holdings Inc. · TW

Inventors

• Sunil Krishna Sainis · Malden, US
• Seth J. Bishop · Framingham, US
• Ana L. Lattes · Newton, US
• Ming-Chuan Hung · Taoyuan, TW
• Shi-Lin Li · Hsinchu, TW

Key dates

• Filing date: Feb 27, 2018
• Grant date: Jun 18, 2019
• Expiry date: Feb 27, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G09G3/344
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A writeable display medium incorporating various sensing elements into the backplane of the writeable display medium so that the sensing elements can cause the associated pixels to update immediately in contrast to state-of-the art writeable displays that rely on a feedback loop between a digitizing layer and a display driver that controls the output of a display. As a stylus is moved over the display, a signal emitted from the stylus (e.g., an electromagnetic field) will change the state of a transistor associated with a pixel, resulting in a nearly instantaneous state change in the display (i.e., white to black).