Granted Patent B2

US 12,548,515 · App. 18/914,288 · Granted Feb 10, 2026

Inventors: Jeong Min Sung (Yongin-si, KR); Woo Chul Kim (Yongin-si, KR); Weon Jun Choe (Yongin-si, KR)

Assignee: Samsung Display Co., Ltd.

G09G3/3233G09G3/2022G09G3/3266G11C19/28G09G3/3275G09G2300/0842G09G2300/0861G09G2310/0286G09G2310/08G09G2320/064

Abstract

Claims (52)

1 . A display device comprising:

a pixel; and

an emission control driver configured to supply an emission control signal for determining emission periods and non-emission periods of the pixel,

wherein a first frame group comprises N number of consecutive frames (N is an integer more than 1),

wherein a second frame group comprises the N number of consecutive frames,

wherein an initial frame of the second frame group is disposed immediately after a last frame of the first frame group,

wherein a total emission time of the first frame group and a total emission time of the second frame group are identical, and

wherein, in the first frame group, at least two of the N number of the consecutive frames have different emission times from each other.

2 . The display device of claim 1 ,

wherein, in the second frame group, at least two of the N number of the consecutive frames have different emission times from each other.

3 . The display device of claim 2 ,

wherein a first arrangement of the N number of the consecutive frames of the first frame group and a second arrangement of the N number of the consecutive frames of the second frame group are identical.

4 . The display device of claim 1 ,

wherein, in the first frame group, a first frame and a second frame are time-divisionally alternately arranged, and

wherein a first length of one of the non-emission periods for the first frame is different from a second length of one of the non-emission periods for the second frame.

5 . The display device of claim 4 , further comprising:

a timing controller configured to determine a duty ratio of the emission control signal, based on a duty ratio bit stream configured with a plurality of bits,

wherein the timing controller determines the duty ratio, by using partial bits among the plurality of bits of the duty ratio bit stream.

6 . The display device of claim 5 ,

wherein the plurality of bits of the duty ratio bit stream are m bits,

wherein the partial bits are m−k most significant bits (MSBs) of the duty ratio bit stream, and

wherein the k is a natural number of 1 or more, and the m is a natural number of 2 or more.

7 . The display device of claim 5 ,

wherein the first length is determined by a first duty ratio bit stream, and

wherein the second length is determined by a second duty ratio bit stream.

8 . The display device of claim 7 , wherein the second duty ratio bit stream has a value obtained by adding 2 k to the first duty ratio bit stream, and

wherein the k is a natural number of 1 or more.

9 . The display device of claim 6 , wherein m−k MSBs of an average value of duty ratio bit streams during consecutive frames correspond to m−k MSBs of a first duty ratio bit stream determining the first length.

10 . A method for driving a display device, the method comprising:

supplying, by an emission control driver, a first emission control signal to a pixel during a period of a first frame group comprising N number of consecutive frames (N is an integer more than 1); and

supplying, by the emission control driver, a second emission control signal to the pixel during a period of a second frame group comprising the N number of consecutive frames,

wherein an initial frame of the second frame group is disposed immediately after a last frame of the first frame group,

wherein a total emission time of the first frame group and a total emission time of the second frame group are identical, and

wherein, in the first frame group, at least two of the N number of the consecutive frames have different emission times from each other.

11 . The method of claim 10 ,

wherein, in the second frame group, at least two of the N number of the consecutive frames have different emission times from each other.

12 . The method of claim 11 ,

wherein a first arrangement of the N number of the consecutive frames of the first frame group and a second arrangement of the N number of the consecutive frames of the second frame group are identical.

13 . The method of claim 10 ,

wherein the first emission control signal and the second emission control signal determine emission periods and non-emission periods of the pixel,

wherein, in the first frame group, a first frame and a second frame are time-divisionally alternately arranged, and

wherein a first length of one of the non-emission periods for the first frame is different from a second length of one of the non-emission periods for the second frame.

14 . The method of claim 13 , further comprising:

determining, by a timing controller, a first duty ratio of the first emission control signal by using partial bits among a plurality bits of a first duty ratio bit stream;

supplying, by the timing controller, a control signal corresponding to the first duty ratio to the emission control driver;

determining, by the timing controller, a second duty ratio of the second emission control signal by using partial bits among a plurality bits of a second duty ratio bit stream; and

supplying, by the timing controller, a control signal corresponding to the second duty ratio to the emission control driver.

15 . The method of claim 14 ,

wherein the plurality of bits of each of the first and second duty ratio bit streams are m bits,

wherein the partial bits of each of the first and second duty ratio bit streams are m−k most significant bits (MSBs), and

wherein the k is a natural number of 1 or more, and the m is a natural number of 2 or more.

16 . The method of claim 15 , wherein m−k MSBs of an average value of duty ratio bit streams during consecutive frames correspond to m−k MSBs of the first duty ratio bit stream determining the first length.

Assignments (1)

Priority Claims (1)

Continuity (5)

References Cited (134)