US 12,254,824 B2
Pixel circuit for lower power consumption
Ying-Chieh Chen, Hsin-Chu (TW); Yi-Fu Ou, Hsin-Chu (TW); and Yung-Hsiang Lan, Hsin-Chu (TW)
Assigned to AUO CORPORATION, Hsin-Chu (TW)
Filed by AUO Corporation, Hsin-Chu (TW)
Filed on Dec. 18, 2023, as Appl. No. 18/542,829.
Claims priority of application No. 202310842882.5 (CN), filed on Jul. 11, 2023.
Prior Publication US 2025/0022405 A1, Jan. 16, 2025
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0842 (2013.01); G09G 2300/0876 (2013.01); G09G 2310/08 (2013.01); G09G 2330/021 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pixel circuit, comprising:
a driving transistor, with a first end electrically connected to a system high voltage terminal, wherein the driving transistor is configured to control a driving current provided to a light emitting element;
a storage capacitor, with a first end electrically connected to a control end of the driving transistor;
a first transistor, with a first end electrically connected to a second end of the storage capacitor, with a second end configured to receive a data signal;
a second transistor, electrically connected between a second end of the driving transistor and the control end of the driving transistor;
a third transistor, with a first end configured to receive a reference voltage, with a second end electrically connected to a second end of the storage capacitor; and
a fourth transistor, electrically connected between the second end of the driving transistor and a system low voltage terminal,
wherein when the first transistor and the second transistor are turned on according to a first control signal, a voltage variation of the data signal coupled by the storage capacitor to the control end of the driving transistor resets and turns on the driving transistor, and wherein the voltage variation is a change from a pre-charge voltage to a reset voltage which is lower than the pre-charge voltage.