US 11,935,490 B2
Display device
Si-Beak Pyo, Cheonan-si (KR); Won-Ju Shin, Cheonan-si (KR); and Kyung-Ho Hwang, Hwaseong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Sep. 9, 2022, as Appl. No. 17/931,112.
Application 16/534,670 is a division of application No. 15/294,611, filed on Oct. 14, 2016, granted, now 10,424,255, issued on Sep. 24, 2019.
Application 17/931,112 is a continuation of application No. 17/182,037, filed on Feb. 22, 2021, granted, now 11,443,700.
Application 17/182,037 is a continuation of application No. 16/534,670, filed on Aug. 7, 2019, granted, now 10,930,222, issued on Feb. 23, 2021.
Claims priority of application No. 10-2015-0149928 (KR), filed on Oct. 28, 2015.
Prior Publication US 2023/0005438 A1, Jan. 5, 2023
Int. Cl. G09G 3/3291 (2016.01); G09G 3/3233 (2016.01); G09G 3/3258 (2016.01)
CPC G09G 3/3291 (2013.01) [G09G 3/3233 (2013.01); G09G 3/3258 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0286 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/045 (2013.01); G09G 2330/021 (2013.01); G09G 2340/0435 (2013.01)] 15 Claims
OG exemplary drawing
 
9. A display device comprising:
a display panel comprising a gate line, a data line, a first power line, a second power line, and a pixel connected to the gate line, the data line, the first power line, and the second power line;
a timing controller configured to generate a gate driving control signal, a data driving control signal, a power control signal, and a switch control signal based on a display period representing a time interval of frames;
a gate driver configured to provide a gate signal to the pixel through the gate line based on the gate driving control signal;
a data driver configured to provide a data signal to the pixel through the data line based on the data driving control signal;
a power supply that generates a first power voltage and a second power voltage lower than the first power voltage;
a charging pump unit configured to generate a first secondary power voltage and a second secondary power voltage lower than the first secondary power voltage to be adjusted with time during the display period based on the power control signal; and
a power selecting unit configured to connect the first power line and the second power line to the charging pump unit or the power supply based on the switch control signal.