METHOD OF DRIVING ELECTROPHORETIC DISPLAY PANEL

• US 20120098872A1
• Filed: 07/13/2011
• Published: 04/26/2012
• Est. Priority Date: 10/26/2010
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Jong-Hee, PARK, Cheol-Woo, CHOI, Uk-Chul, HWANG, Hyun-Sik, LIM, Kyoung-Ho
• Application Number:
  US13/181,991
• Publication Number:
  US 20120098872A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2300/08 Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
• CPC Class Codes: G09G 2310/063 Waveforms for resetting the whole screen at once
• CPC Class Codes: G09G 3/2014 by modulation of the duration of a single pulse during which the logic level remains constant
• 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 method of driving an electrophoretic display panel includes: applying a first voltage having a first polarity with respect to a reference voltage to an electrophoretic display panel to display an N-th image, where N is a natural number; applying the first voltage to the electrophoretic display panel, on which the N-th image is displayed, to display a first full-grayscale image; applying a second voltage having a second polarity with respect to a reference voltage to an electrophoretic display panel, on which the first full-grayscale image is displayed, to display a second full-grayscale image, where the second polarity is opposite to the first polarity; and applying the first polarity voltage to the electrophoretic display panel, on which the second full grayscale image is displayed, to display an (N+1)-th image.

Claims

1. A method of driving an electrophoretic display panel, the method comprising:

applying a first voltage having a first polarity with respect to a reference voltage to the electrophoretic display panel to display an N-th image, wherein N is a natural number;

applying the first voltage to the electrophoretic display panel on which the N-th image is displayed, to display a first full grayscale image;

applying a second voltage having a second polarity with respect to the reference voltage to the electrophoretic display panel, on which the first full grayscale image is displayed, to display a second full grayscale image, wherein the second polarity is opposite to the first polarity; and

applying the first voltage to the electrophoretic display panel, on which the second full grayscale image is displayed, to display an (N+1)-th image.

2. The method of claim 1, wherein the first full grayscale image is a full black image, and the second full grayscale image is a full white image.

3. The method of claim 2, wherein an interval, during which the N-th image is converted to the full black image, is substantially the same as an interval, during which a highest grayscale of the N-th image is converted to a black grayscale.

4. The method of claim 1, wherein the first full grayscale image is a full white image, and the second full grayscale image is a full black image.

5. The method of claim 4, wherein an interval, during which the N-th image is converted to the full white image, is substantially the same as an interval, during which a lowest grayscale of the N-th image is converted to a white grayscale.

6. A method of driving an electrophoretic display panel, the method comprising:

applying a first voltage having a first polarity with respect to a reference voltage to the electrophoretic display panel to display an N-th image, wherein N is a natural number;

applying the first voltage to the electrophoretic display panel, on which the N-th image is displayed, to display a first full grayscale image;

applying a second voltage having a second polarity with respect to the reference voltage to the electrophoretic display panel, on which display the first full grayscale image is displayed, to display an (N+1)-th image, wherein the second polarity is opposite to the first polarity; and

applying the second voltage to the electrophoretic display panel, on which the (N+1)-th image is displayed, to display a second full grayscale image.

7. The method of claim 6, wherein the first full grayscale image is a full black image, and the second full grayscale image is a full white image.

8. The method of claim 7, wherein an interval, during which N-th image is converted to the full black image, is substantially the same as an interval, during which a highest grayscale of the N-th image is converted to a black grayscale.

9. The method of claim 6, wherein the first full grayscale image is a full white image, and the second full grayscale image is a full black image.

10. The method of claim 9, wherein an interval, during which the N-th image is converted to the full white image, is substantially the same as an interval, during which a lowest grayscale of the N-th image is converted to a white grayscale.

11. A method of driving an electrophoretic display panel, the method comprising:

displaying an N-th image on the electrophoretic display panel, wherein N is a natural number;

converting a middle grayscale of the N-th image to a black grayscale;

converting each of a black grayscale of the N-th image and the black grayscale converted from the middle grayscale of the N-th image to a white grayscale; and

displaying an (N+1)-th image on the electrophoretic display panel having a full white grayscale.

12. The method of claim 11, further comprising:

applying a first voltage having a first polarity with respect to a reference voltage to the electrophoretic display panel, on which an M-th image is displayed, to display a first full grayscale image, wherein M is a natural number;

applying an second voltage having a second polarity with respect to the reference voltage to the electrophoretic display panel, on which the first full grayscale image is displayed, to display a second full grayscale image, wherein the second polarity is opposite to the first polarity; and

applying the first voltage to the electrophoretic display panel, on which the second full grayscale image is displayed, to display an (M+1)-th image.

13. The method of claim 12, wherein the first full grayscale image is a full black image, and the second full grayscale image is a full white image.

14. The method of claim 13, wherein an interval, during which the M-th image is converted to the full black image, is substantially the same as an interval, during which a highest grayscale of the M-th image is converted to a black grayscale.

15. The method of claim 12, wherein the first full grayscale image is a full white image, and the second full grayscale image is a full black image.

16. The method of claim 15, wherein an interval during, which the M-th image is converted to the full white image, is substantially the same as an interval, during which a lowest grayscale of the M-th image is converted to a white grayscale.

17. The method of claim 11, further comprising:

applying a first voltage having a first polarity with respect to a reference voltage to the electrophoretic display panel, on which an M-th image is displayed, to display a first full grayscale image, wherein M is a natural number;

applying a second voltage having a second polarity with respect to the reference voltage to the electrophoretic display panel, on which the first full grayscale image is displayed, to display an (M+1)-th image, wherein the second polarity is opposite to the first polarity;

applying the second voltage to the electrophoretic display panel, on which a 2M-th image is displayed, to display a second full grayscale image; and

applying the first voltage to the electrophoretic display panel, on which the second full grayscale image is displayed, to display a (2M+1)-th image.

18. The method of claim 17, wherein the first full grayscale image is a full black image, and the second full grayscale image is a full white image.

19. The method of claim 17, wherein the first full grayscale image is a full white image, and the second full grayscale image is a full black image.