US 12,230,212 B2
Driving controller and display device including the same
Kihyun Pyun, Yongin-si (KR); and Sung-Mo Yang, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD, Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jan. 31, 2024, as Appl. No. 18/427,919.
Claims priority of application No. 10-2023-0056941 (KR), filed on May 2, 2023.
Prior Publication US 2024/0371326 A1, Nov. 7, 2024
Int. Cl. G09G 3/3258 (2016.01)
CPC G09G 3/3258 (2013.01) [G09G 2300/0842 (2013.01); G09G 2320/0626 (2013.01); G09G 2330/021 (2013.01); G09G 2330/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of pixels;
a voltage generator configured to provide a driving voltage to the plurality of pixels; and
a driving controller configured to receive an image signal and to drive the plurality of pixels,
wherein the driving controller includes an overcurrent protecting circuit,
wherein the overcurrent protecting circuit includes:
a first logic circuit configured to compare a limit current with a sensing current generated by sensing a driving current flowing to the plurality of pixels to generate a first comparison result;
a second logic circuit configured to compare a load of previous image data of the image signal with a limit load to generate a second comparison result and to compare the driving voltage with a limit voltage to generate a third comparison result; and
a driving voltage controller configured to output a driving voltage control signal for controlling the driving voltage to the voltage generator,
wherein, when the first comparison result indicates the sensing current is greater than or equal to the limit current, the second comparison result indicates the load is greater than the limit load and the third comparison result indicates the driving voltage is greater than the limit voltage, the driving voltage controller outputs the driving voltage control signal for maintaining the driving voltage for present image data of the image signal.