US 12,412,511 B2
Pixel circuit and display device including the same
Minseok Kim, Seoul (KR); Buyeol Lee, Seoul (KR); Hun Jang, Paju-si (KR); and Sanghoon Jung, Goyang-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 22, 2023, as Appl. No. 18/395,352.
Claims priority of application No. 10-2022-0191286 (KR), filed on Dec. 30, 2022.
Prior Publication US 2024/0221618 A1, Jul. 4, 2024
Int. Cl. G09G 3/32 (2016.01)
CPC G09G 3/32 (2013.01) [G09G 2300/0452 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A transparent micro-LED unit pixel circuit comprising:
a first micro-LED, a second micro-LED and a third micro-LED configured to emit light based on a driving current;
a driving transistor configured to control the driving current, wherein the driving transistor is connected between a high-potential power line and an anode electrode of each of the first micro-LED, the second micro-LED, and the third micro-LED;
a storage capacitor connected between a gate electrode and a source electrode of the driving transistor;
a first transistor configured to apply a data voltage to the gate electrode of the driving transistor;
a first power line connected to a cathode electrode of the first micro-LED;
a second power line connected to a cathode electrode of the second micro-LED; and
a third power line connected to a cathode electrode of the third micro-LED,
wherein depending on a low-potential voltage or a high-potential voltage applied to the first, second, and third power lines, one of the first, second, and third micro-LEDs emits light,
wherein when the first micro-LED is selected to emit light, the low-potential voltage is applied to the first power line, while the high-potential voltage is applied to the second and third power lines,
wherein when the second micro-LED is selected to emit light, the low-potential voltage is applied to the second power line, while the high-potential voltage is applied to the first and third power lines, and
wherein when the third micro-LED is selected to emit light, the low-potential voltage is applied to the third power line, while the high-potential voltage is applied to the first and second power lines.