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:
Jan. 07, 2025
Filed:
Apr. 11, 2022
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Abstract
A display device that has high display quality is provided. A highly reliable display device is provided. A display device with low power consumption is provided. A light-emitting element is electrically connected to one of a source and a drain of a first transistor. The other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of a second transistor. A gate electrode of the second transistor is electrically connected to one of a source and a drain of a third transistor. A semiconductor layer of the second transistor and a semiconductor layer of the third transistor each include indium, zinc and a third metal. The ratio of the number of indium atoms to the total number of the indium atoms, zinc atoms, and atoms of the third metal in the semiconductor layer of the second transistor is higher than or equal to 30 atomic % and lower than or equal to 100 atomic %. The second transistor has a function of controlling the amount of light emission of the light-emitting element.