US 11,935,479 B1
Organic light-emitting display device and its driving method
Cheon Wi Park, Suwon-si (KR); Jung Il Seo, Seongnam-si (KR); and Jae Hong Ko, Seongnam-si (KR)
Assigned to DB GlobalChip Co., Ltd., Seongnam-si (KR)
Filed by DB GlobalChip Co., Ltd., Seongnam-si (KR)
Filed on Jul. 21, 2023, as Appl. No. 18/356,875.
Claims priority of application No. 10-2023-0081305 (KR), filed on Jun. 23, 2023.
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2310/0294 (2013.01); G09G 2320/0252 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An organic light-emitting display device including a display panel including a driving thin film transistor (TFT), comprising:
a sensing unit configured to perform a sensing operation for external compensation of the display panel; and
an analog-digital converter (ADC) configured to perform a conversion operation of converting an analog value held in the sensing unit into a digital value,
wherein the sensing unit comprises:
a basic sensing unit configured to perform a sensing operation on the driving TFT; and
a dummy sensing unit configured to perform a sensing operation on changes in a gain and an offset of the ADC, and
the basic sensing unit and the dummy sensing unit are in a cascade connection to each other.