The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 2024
Filed:
Aug. 07, 2023
Applicant:
Sapien Semiconductors Inc., Seoul, KR;
Inventors:
Ji Han Kim, Seoul, KR;
Sung Ho Hwang, Seoul, KR;
Ji Haeng Lee, Seoul, KR;
Dae Young Jung, Seoul, KR;
Assignee:
SAPIEN Semiconductors Inc., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/00 (2006.01); G09G 3/3233 (2016.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G09G 3/3233 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01);
Abstract
A pixel driving circuit includes a memory unit 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 unit, 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 generates a test mode activation signal based on the first signal and the second signal.