IP Library Granted Patent US 8,654,088
Granted Patent B2
US 8,654,088 · App. 12/632,306 · Granted Feb 18, 2014

Display, display driving method, and electronic apparatus

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Quick Facts
Patent No.
US 8,654,088
App. No.
12/632,306
Granted
Feb 18, 2014
Kind
B2
Abstract

A display includes: a display section having a plurality of pixels provided in a region where a first substrate and a second substrate are disposed opposite to each other; a switch provided in the region where the first substrate and the second substrate are disposed opposite to each other, the switch having two electrodes closed by a pressure from outside; a detecting section comparing a signal from the switch with a reference signal to determine whether the switch is closed or not; and a precharge section applying a precharge potential to a wiring in continuity with one of the electrodes of the switch prior to the detection at the detecting section.

Claims (35)

1. A display comprising:

first and second substrates disposed opposite each other;

a display section having a plurality of pixels in a region where the first substrate and the second substrate are disposed opposite each other, each of the plurality of pixels having a first electrode and a second electrode;

a switch in the region where the first substrate and the second substrate are disposed opposite each other, the switch having two electrodes placed in electrical communication by a pressure from outside the display to close the switch, one of the two electrodes of the switch connected to a data line;

a detecting section configured to compare a signal from the switch with a reference signal to determine whether the switch is closed or not before writing data to a pixel of the display section through the data line, the signal obtained through the data line; and

a precharge section configured to apply a precharge potential to a data line connected to one of the electrodes of the switch before writing data to the pixel of the display section through the data line,

wherein,

one of the electrodes of the switch is connected to (i) the first electrode of the pixel of the display section, and (ii) the data line through the first electrode,

the other electrode of the switch is connected to the second electrode of the pixel, and

the precharge potential is applied to the data line, the signal from the switch is compared to the reference signal, and the data is written to the pixel of the display section in this order.

2. A display according to claim 1 , wherein a pixel electrode of a transistor for driving the pixel and one of the electrodes of the switch are connected to each other.

3. A display according to claim 1 , wherein the precharge potential applied by the precharge section is a potential different from a common potential for displaying an image applied to the pixels.

4. A display according to claim 1 , wherein the precharge potential applied by the precharge section is a potential which is opposite in phase to a common potential for displaying an image applied to the pixels.

5. A display according to claim 1 , wherein the detecting section determines whether the switch is closed or not during a predetermined period other than a period for displaying an image at the pixels of the display section.

6. A display according to claim 1 , wherein the two electrodes of the switch are on the first substrate and configured to be closed through a conductor pattern provided on the second substrate.

7. A display according to claim 1 , wherein the switch is in the pixel of the display section.

8. A method of driving a display including a display section having a plurality of pixels in a region where a first substrate and a second substrate are disposed opposite to each other and a switch in the region where the first substrate and the second substrate are disposed opposite to each other, each of the plurality of pixels having a first electrode and a second electrode, the switch having two electrodes placed in electrical communication by a pressure from outside the display section to close the switch, one of the two electrodes of the switch connected to a data line, the method comprising the steps of:

applying a precharge potential to the data line before writing data to a pixel of the display section through the data line; and

determining whether the switch is closed or not during an on-period of a transistor for driving the pixel before writing the data to the pixel through the data line, the signal obtained through the data line,

wherein,

one of the electrodes of the switch is connected to (i) the first electrode of the pixel of the display section, and (ii) the data line through the first electrode, and

the other electrode of the switch is connected to the second electrode of the pixel, and

the precharge potential is applied to the data line, the signal from the switch is compared to the reference signal, and the data is written to the pixel of the display section in this order.

9. A method of driving a display according to claim 8 , wherein the precharge potential is a potential different from a common potential applied to the pixel for displaying an image.

10. A method of driving a display according to claim 8 , wherein the precharge potential is a potential which is opposite in phase to a common potential applied to the pixel for displaying an image.

11. An electronic apparatus comprising a display, wherein the display includes:

first and second substrates disposed opposite each other;

a display section having a plurality of pixels in a region where the first substrate and the second substrate are disposed opposite each other, each of the plurality of pixels having a first electrode and a second electrode;

a switch in the region where the first substrate and the second substrate are disposed opposite each other, the switch having two electrodes placed in electrical communication by a pressure from outside the display to close the switch, one of the two electrodes of the switch connected to a data line;

a detecting section configured to compare a signal from the switch with a reference signal to determine whether the switch is closed or not before writing data to a pixel of the display section through the data line, the signal obtained through the data line; and

a precharge section configured to apply a precharge potential to the data line before writing data to the pixel of the display section through the data line,

wherein,

one of the electrodes of the switch is connected to (i) the first electrode of the pixel of the display section, and (ii) the data line through the first electrode,

the other electrode of the switch is connected to the second electrode of the pixel, and

the precharge potential is applied to the data line, the signal from the switch is compared to the reference signal, and the data is written to the pixel of the display section in this order.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 11, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072398/0001 →
MERGER AND CHANGE OF NAME Recorded Jul 24, 2025
From: JAPAN DISPLAY EAST INC.; JAPAN DISPLAY WEST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 071935/0063 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2013
From: SONY CORPORATION
To: JAPAN DISPLAY WEST INC.
Reel/Frame 030192/0347 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 7, 2009
From: YAMAUCHI, YUKO; MIZUHASHI, HIROSHI; NAKAJIMA, YOSHIHARU; TANAKA, TSUTOMU; HAYASHI, SHUJI; KOITO, TAKEO
To: SONY CORPORATION
Reel/Frame 023613/0922 →