US 12,112,667 B2
Pixel and display apparatus capable of controlling test function preliminary class
Ji Han Kim, Seoul (KR); Sung Ho Hwang, Seoul (KR); Ji Haeng Lee, Seoul (KR); and Dae Young Jung, Seoul (KR)
Assigned to SAPIEN Semiconductors Inc., Gyeonggi-do (KR)
Filed by Sapien Semiconductors Inc., Seoul (KR)
Filed on Aug. 7, 2023, as Appl. No. 18/366,257.
Claims priority of application No. 10-2022-0101250 (KR), filed on Aug. 12, 2022.
Prior Publication US 2024/0054928 A1, Feb. 15, 2024
Int. Cl. G09G 3/00 (2006.01); G09G 3/3233 (2016.01)
CPC G09G 3/006 (2013.01) [G09G 3/3233 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pixel driving circuit comprising:
a memory storing data based on a first signal and a second signal;
a driver connected to a luminous element and supplying electric power to the luminous element based on the data stored in the memory; and
a test controller controlling entry into a test mode in which it is tested whether the pixel driving circuit is defective,
wherein the test controller receives the first signal and the second signal and generates a test mode activation signal based on the first signal and the second signal,
wherein the pixel driving circuit is included in each individual pixel and is configured to drive the individual pixel based on the first signal and the second signal.