Display system, display device, and method for the same

• US 20080238899A1
• Filed: 03/15/2008
• Published: 10/02/2008
• Est. Priority Date: 03/29/2007
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Yamada, Toshimichi
• Granted Patent: US 8,345,024 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G09G 2310/0245 Clearing or presetting the whole screen independently of waveforms, e.g. on power-on G09G2310/063 takes precedence
• CPC Class Codes: G09G 2310/0262 The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
• CPC Class Codes: G09G 2310/061 for resetting or blanking
• CPC Class Codes: G09G 2330/02 Details of power systems and of start or stop of display operation
• CPC Class Codes: G09G 3/344 based on particles moving in a fluid or in a gas, e.g. electrophoretic devices electrophoretic devices per se G02F1/167

Abstract

A display system includes: a display device including a display section having a dispersed system containing electrophoretic particles between a first electrode and a second electrode, wherein an electric field is generated between the first electrode and the second electrode according to display data, and the electrophoretic particles are migrated by the electric field so that an image corresponding to the display data is displayed; and a display-data providing device that provides a display control signal containing the display data to the display device; wherein the display system erases the display content of the display section by generating an electric field between the first electrode and the second electrode according to display data corresponding to the display content. The display-data providing device stores display data to be provided to the display device and information corresponding to the display data in association with each other. The display device holds the corresponding information associated with the display data provided from the display-data providing device, wherein if the display data is lost, the display device outputs a display-data identifying signal containing the corresponding information, and erases the display content according to display data corresponding to the display content identified by the display-data providing device according to the corresponding information contained in the display-data identifying signal.

Claims

1. A display system comprising:

a display device including a display section having a dispersed system containing electrophoretic particles between a first electrode and a second electrode, wherein an electric field is generated between the first electrode and the second electrode according to display data, and the electrophoretic particles are migrated by the electric field so that an image corresponding to the display data is displayed; and

a display-data providing device that provides a display control signal containing the display data to the display device;

wherein

the display system erases the display content of the display section by generating an electric field between the first electrode and the second electrode according to display data corresponding to the display content, wherein

the display-data providing device stores display data to be provided to the display device and information corresponding to the display data in association with each other; and

the display device holds the corresponding information associated with the display data provided from the display-data providing device, wherein if the display data is lost, the display device outputs a display-data identifying signal containing the corresponding information, and erases the display content according to display data corresponding to the display content identified by the display-data providing device according to the corresponding information contained in the display-data identifying signal.

2. The display system according to claim 1, wherein

the display-data providing device stores the display data and the corresponding information unique to the display data in association with each other, and provides the display control signal containing the corresponding information to the display device;

and

the display device includes a nonvolatile memory for storing the corresponding information contained in the display control signal, and outputs a display-data identifying signal containing the corresponding information stored in the nonvolatile memory.

3. The display system according to claim 1, wherein

the display-data providing device stores the display data and the corresponding information unique to the display device that sends the display control signal containing the display data in association with each other;

and

the display device outputs the display-data identifying signal containing the corresponding information.

4. The display system according to claim 1, wherein

the display-data providing device determines whether or not display data is identified according to the display-data identifying signal, wherein if no display data is identified according to the display-data identifying signal, the display device alternately generates opposite electric fields between the first electrode and the second electrode to erase the display content.

5. The display system according to claim 1, wherein

the display-data providing device sends the display control signal by radio;

and

the display device includes a power generating section that generates power for generating an electric field between the first electrode and the second electrode from the display control signal sent by radio.

6. The display system according to claim 5, wherein

the display device includes a storage section that stores the display data while power is supplied from the power generating section.

7. The display system according to claim 1, wherein

the display content is erased before an image according to new display data is displayed.

8. A display device comprising:

a display section having a dispersed system containing electrophoretic particles between a first electrode and a second electrode, the display device generating an electric field between the first electrode and the second electrode according to a display control signal containing display data sent from a display-data providing device, migrating the electrophoretic particles by the electric field to display an image corresponding to the display data, and generating an electric field between the first electrode and the second electrode according to display data corresponding to the display content of the display section to erase the display content;

wherein

the display data contained in the display control signal is stored in the display-data providing device in association with information corresponding to the display data; and

the display device holds the corresponding information associated with the display data provided from the display-data providing device, wherein if the display data is lost, the display device outputs a display-data identifying signal containing the corresponding information, and erases the display content according to display data corresponding to the display content identified by the display-data providing device according to the corresponding information contained in the display-data identifying signal.

9. A display method for a display system including a display device with a display section having a dispersed system containing electrophoretic particles between a first electrode and a second electrode, wherein an electric field is generated between the first electrode and the second electrode according to display data, and the electrophoretic particles are migrated by the electric field so that an image corresponding to the display data is displayed;

and a display-data providing device that provides a display control signal containing the display data to the display device, wherein the display system erases the display content of the display section by generating an electric field between the first electrode and the second electrode according to display data corresponding to the display content and then displays an image according to new display data, the method comprising;

for the display-data providing device, storing display data to be provided to the display device and information corresponding to the display data in association with each other; and

for the display device, holding the corresponding information associated with the display data provided from the display-data providing device, wherein if the display data is lost, outputting a display-data identifying signal containing the corresponding information, and erasing the display content according to display data corresponding to the display content identified by the display-data providing device according to the corresponding information contained in the display-data identifying signal.