US 12,469,441 B2
Organic light emitting display device and method of operating the same
Jeongmin Sung, Seoul (KR); and Woo-Chul Kim, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Nov. 4, 2024, as Appl. No. 18/936,971.
Application 18/936,971 is a continuation of application No. 18/446,432, filed on Aug. 8, 2023, granted, now 12,136,388.
Application 18/446,432 is a continuation of application No. 17/722,288, filed on Apr. 15, 2022, granted, now 11,721,279, issued on Aug. 8, 2023.
Application 17/722,288 is a continuation of application No. 17/039,936, filed on Sep. 30, 2020, granted, now 11,308,870, issued on Apr. 19, 2022.
Application 17/039,936 is a continuation of application No. 15/943,325, filed on Apr. 2, 2018, granted, now 10,796,632, issued on Oct. 6, 2020.
Claims priority of application No. 10-2017-0064245 (KR), filed on May 24, 2017.
Prior Publication US 2025/0061849 A1, Feb. 20, 2025
Int. Cl. G09G 3/3208 (2016.01); G09G 5/00 (2006.01)
CPC G09G 3/3208 (2013.01) [G09G 5/003 (2013.01); G09G 2300/0814 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0264 (2013.01); G09G 2340/04 (2013.01); G09G 2340/0435 (2013.01); G09G 2340/0442 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a source device configured to output image data; and
a sink device configured to perform a displaying operation based on the image data, the sink device comprising a display panel including a pixel circuit that includes a light emitting element configured to emit light in response to an emission on-off clock and a display panel driving circuit configured to drive the display panel,
wherein the source device is configured to change a frame rate of an image frame composing the image data while the displaying operation is performed,
wherein the sink device is configured to receive the image frame, to change a frame rate of a panel driving frame in response to a change of the frame rate of the image frame, and to perform the displaying operation based on the image frame by applying the emission on-off clock to the panel driving frame,
wherein the sink device is configured to perform the displaying operation during a first panel driving frame having a first frame rate and a second panel driving frame following the first panel driving frame and having a second frame rate that is different from the first frame rate, each of the first and second panel driving frames including a plurality of off-periods of the emission on-off clock, and
wherein an emission duty ratio of the first panel driving frame is equal to an emission duty ratio of the second panel driving frame even when a number of the off-periods included in the first panel driving frame is different from a number of the off-periods included in the second panel driving frame.