US 12,142,209 B2
Pixel and display apparatus having the same
Heerim Song, Seoul (KR); Mukyung Jeon, Ulsan (KR); Heejean Park, Suwon-si (KR); Yujin Lee, Suwon-si (KR); and Cheol-Gon Lee, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Jan. 24, 2022, as Appl. No. 17/583,005.
Claims priority of application No. 10-2021-0054532 (KR), filed on Apr. 27, 2021.
Prior Publication US 2022/0343844 A1, Oct. 27, 2022
Int. Cl. G09G 3/3233 (2016.01); G09G 3/32 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 3/32 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0214 (2013.01); G09G 2320/0247 (2013.01); G09G 2330/021 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A pixel comprising:
a light emitting element;
a driving switching element configured to provide a driving current to the light emitting element, wherein the driving switching element is a first pixel switching element;
an initialization voltage terminal;
a data initialization switching element set;
an adjustment switching element electrically connected to the data initialization switching element set in series, wherein at least one of the data initialization switching element set and the adjustment switching element controls an electrical connection between the control electrode of the driving switching element and the initialization voltage terminal, and wherein a control electrode of the adjustment switching element is electrically connected to an input electrode of the adjustment switching element;
a writing switching element configured to provide a data voltage to an input electrode of the driving switching element, wherein the writing switching element is a second pixel switching element, wherein a control electrode of the second pixel switching element receives a data write gate signal;
a third pixel switching element including a control electrode configured to receive a gate compensation signal, an input electrode connected to an output electrode of the driving switching element, and an output electrode connected to a gate electrode of the driving switching element; and
a light emitting element initialization switching element configured to initialize an anode of the light emitting element at an initialization voltage that equals a sum of a threshold voltage of the light emitting element and a second power voltage applied to a cathode of the light emitting element,
wherein the second pixel switching element includes a p-type transistor and the third pixel switching element includes an n-type transistor, and
wherein in operation the pixel is driven at a lower frequency than a normal frequency when a static image is displayed or when in an always on mode.