IP Library Granted Patent US 8,593,438
Granted Patent B2
US 8,593,438 · App. 13/027,673 · Granted Nov 26, 2013

Electrophoretic display and electronic device

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Quick Facts
Patent No.
US 8,593,438
App. No.
13/027,673
Granted
Nov 26, 2013
Kind
B2
Abstract

An electrophoretic display includes a first substrate, a second substrate, an electrophoretic element interposed therebetween, a plurality of scanning lines on an electrophoretic element side surface of the first substrate, a plurality of data lines extending in the crosswise directions of the plurality of scanning lines on the electrophoretic element side surface of the first substrate, a selection transistor connected to one of the scanning lines and one of the data lines, a pixel electrode connected to the selection transistor, and a capacitor with two electrodes, one of the electrode thereof being connected to the selection transistor and the pixel electrode, and the other electrode thereof being connected to one of the scanning lines, wherein a plurality of pixel electrodes are arranged so that a dot density thereof is more than or equal to 200 dpi.

Claims (45)

1. An electrophoretic display comprising:

a first substrate;

a second substrate;

an electrophoretic element interposed therebetween;

a plurality of scanning lines on an electrophoretic element side surface of the first substrate;

a plurality of data lines extending in the crosswise directions of the plurality of scanning lines on the electrophoretic element side surface of the first substrate;

a first selection transistor directly electrically connected to a first scanning line and a first data line;

a second selection transistor directly electrically connected to a second scanning line and the first data line;

a first pixel electrode directly electrically connected to the first selection transistor;

a second pixel electrode directly electrically connected to the second selection transistor; and

a capacitor with two electrodes, one electrode thereof being directly electrically connected to the second selection transistor and the second pixel electrode, and the other electrode thereof being directly electrically connected to the first scanning line,

wherein a plurality of pixel electrodes are arranged so that a dot density thereof is more than or equal to 200 dpi.

2. The electrophoretic display according to claim 1 , wherein the first scanning line is driven immediately before the second scanning line.

3. An electronic device comprising the electrophoretic display claim 2 .

4. An electronic device comprising the electrophoretic display claim 1 .

5. The electrophoretic display according to claim 1 , wherein the other electrode of the capacitor is an extending section of the first scanning line.

6. An electrophoretic display comprising:

a first substrate;

a second substrate;

an electrophoretic element interposed therebetween;

a plurality of scanning lines on an electrophoretic element side surface of the first substrate;

a plurality of data lines extending in the crosswise directions of the plurality of scanning lines on the electrophoretic element side surface of the first substrate;

a first selection transistor directly electrically connected to a first scanning line and a first data line;

a second selection transistor directly electrically connected to a second scanning line and the first data line;

a first pixel electrode directly electrically connected to the first selection transistor;

a second pixel electrode directly electrically connected to the second selection transistor; and

a capacitor with two electrodes, one electrode thereof being directly electrically connected to the second selection transistor and the second pixel electrode, and the other electrode thereof being directly electrically connected to the first scanning line,

wherein a parasitic capacitance Cgs of the first selection transistor is less than or equal to 1% of a capacitance Cs of the capacitor.

7. An electronic device comprising the electrophoretic display claim 6 .

8. The electrophoretic display according to claim 6 , wherein the other electrode of the capacitor is an extending section of the first scanning line.

9. An electrophoretic display comprising:

a first substrate;

a second substrate;

an electrophoretic element interposed therebetween;

a plurality of scanning lines on an electrophoretic element side surface of the first substrate;

a plurality of data lines extending in the crosswise directions of the plurality of scanning lines on the electrophoretic element side surface of the first substrate;

a plurality of capacitor lines formed so as to correspond to the respective scanning lines or the respective data lines;

a first selection transistor directly electrically connected to a first scanning line and a first data line;

a second selection transistor directly electrically connected to a second scanning line and the first data line;

a first pixel electrode directly electrically connected to the first selection transistor;

a second pixel electrode directly electrically connected to the second selection transistor; and

a capacitor having one electrode directly electrically connected to the second selection transistor and the second pixel electrode,

wherein the capacitor includes a first capacitor having the other electrode directly electrically connected to the first scanning line, and a second capacitor having the other electrode directly electrically connected to one of the capacitor lines.

10. An electronic device comprising the electrophoretic display claim 9 .

11. The electrophoretic display according to claim 9 , wherein the other electrode of the first capacitor is an extending section of the first scanning line.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 13, 2018
From: SEIKO EPSON CORPORATION
To: E INK CORPORATION
Reel/Frame 047072/0325 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 15, 2011
From: KOMATSU, YUKO; SATO, TAKASHI
To: SEIKO EPSON CORPORATION
Reel/Frame 025810/0481 →