Light-transmissive conductor with directional conductivity

Patent metadata

Field	Value
Publication number	US-12181768-B2
Application number	US-202017032002-A
Country	US
Kind code	B2
Filing date	Sep 25, 2020
Priority date	Oct 1, 2018
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

Light-transmissive conductors including oriented conductors disposed in a light-transmissive polymer having a volume resistivity between 1×10 10 ohm-cm and 1×10 4 ohm-cm. The oriented conductors typically have very high conductivity along their length. Light-transmissive conductors described herein are well-suited for front electrodes for electro-optic displays, especially elongated displays in the shape of ribbons, stripes, or rulers.

First claim

The invention claimed is:

1. A color-changing fiber comprising:
a central conductive element;
a layer of electro-optic media surrounding the central conductive element, the layer of electro-optic media comprising pigment particles in a solvent enclosed in microcapsules dispersed in a polymer binder; and
an outer layer of light-transmissive conductor, the light-transmissive conductor including:
a light-transmissive polymer doped with a salt, a polyelectrolyte, a polymer electrolyte, or a solid electrolyte and having a volume resistivity between 1×10 7 ohm-cm and 1×10 5 ohm-cm, and
an oriented conductive element having an aspect ratio of greater than 10:1(length: width).

Assignees

• E Ink Corp

Inventors

• Paolini Jr Richard J
• Anseth Jay William

Classifications

• D03D15/54

  coloured · CPC title

• D10B2401/20

  optical · CPC title

• G02F1/167 Primary

  by electrophoresis · CPC title

• G02F1/1677

  Structural association of cells with optical devices, e.g. reflectors or illuminating devices · CPC title

• D03D15/533

  antistatic; electrically conductive · CPC title