Patent ID: 11935456
Assignee: LX SEMICON CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 18:
19. A pixel driving apparatus in which a pixel comprises:
a first path circuit comprising a first transistor and a second transistor, which are arranged in series between a high driving voltage and a low driving voltage, and having a first node formed between the first transistor and the second transistor, and a first capacitor being arranged between a gate of the second transistor and a data line; and
a second path circuit comprising a third transistor, a fourth transistor, and a first LED, which are arranged in series between the high driving voltage and the low driving voltage, and a fifth transistor, a sixth transistor, and a second LED, which are arranged in parallel with the third transistor, the fourth transistor, and the first LED, wherein gates of the third transistor and the fifth transistor are electrically connected to the first node, and only either the fourth transistor or the sixth transistor is selected so that only either the first LED or the second LED emits light,
wherein a ramp voltage which increases or decreases with time is formed at the gate of the second transistor, and a data voltage determined based on a grayscale value of the pixel is supplied as a starting value of the ramp voltage to the data line.