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:
Nov. 18, 2025
Filed:
Aug. 05, 2022
Applicant:
Lg Display Co., Ltd., Seoul, KR;
Inventors:
Assignee:
LG Display Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H10K 59/121 (2023.01); H10D 30/67 (2025.01); H10K 50/86 (2023.01); H10K 59/131 (2023.01);
U.S. Cl.
CPC ...
H10K 59/1213 (2023.02); H10D 30/6755 (2025.01); H10K 50/865 (2023.02); H10K 59/1216 (2023.02); H10K 59/131 (2023.02);
Abstract
The present invention relates to a hybrid organic light emitting display device including a driving thin film transistor having an oxide semiconductor pattern and a switching thin film transistor having an oxide semiconductor pattern or a polycrystalline semiconductor pattern in a driving device unit for driving a unit pixel, in which a light blocking layer below an active layer is electrically connected to a source electrode to form the driving thin film transistor with wide control range at low gradation and the light blocking layer is disposed as close as possible to the active layer to broaden the control range of the driving thin film transistor.