IP Library Granted Patent US 7,161,732
Granted Patent B2
US 7,161,732 · App. 11/321,774 · Granted Jan 9, 2007

Electrophoretic display, method for making the electrophoretic display, and electronic apparatus

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Quick Facts
Patent No.
US 7,161,732
App. No.
11/321,774
Granted
Jan 9, 2007
Kind
B2
Abstract

An electrophoretic display comprising a plurality of microcapsules disposed between a pair of substrates, wherein each microcapsule comprises a capsule body containing an insulating fluid and charged particles dispersed in the fluid. The microcapsules are contacted with at least the substrate arranged at a display face side of the pair of substrates and each microcapsule has a flat surface at least at the display face side so that the substrate at the display face side is in face-to-face contact with the microcapsules. As a result, the proportion of the contact area of the substrate with the microcapsules increases compared with the traditional electrophoretic display, preventing uneven displaying and achieving increased contrast and high-quality displaying.

Claims (14)

1. An electrophoretic display comprising:

a plurality of microcapsules, each of which includes a capsule body, a charged particle, and a fluid, encapsulated by the capsule body, the capsule body including an Arabian gum or a gelatin, the plurality of microcapsules contacting to each other;

a first substrate contacting to a first portion of each of the plurality of microcapsules, the first portion having a planar shape;

a second substrate contacting to a second portion of the each of the plurality of microcapsules, the second portion having a planar shape; and

an adhesive disposed between the first and second substrate, the adhesive being 10 percent by volume or less than a sum of volumes of the plurality of microcapsules.

2. An eectrophoretic display comprising:

a plurality of microcapsules, each of the plurality of microcapsules including charged particles and a fluid, the plurality of microcapsules contacting to each other;

a first substrate contacting to a first portion of each of the plurality of microcapsules, the first portion having a planar shape; and

a second substrate contacting to a second portion of the each of the plurality of microcapsules, the second portion having a planar shape; and

an adhesive disposed between the first and the second substrate, the adhesive being 10 percent by volume or less than a sum of volumes of the plurality of microcapsules.

3. The electrophoretic display according to claim 2 , a capsule body of the microcapsule including an Arabian gum or a gelatin.

4. The electrophoretic display according to claim 2 , further comprising;

a spacer disposed between the first and the second substrate.

5. An electronic device including the electrophoretic display according to claim 2 .

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 12, 2019
From: KANBE, SADAO
To: SEIKO EPSON CORPORATION
Reel/Frame 048572/0400 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 13, 2018
From: SEIKO EPSON CORPORATION
To: E INK CORPORATION
Reel/Frame 047072/0325 →