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:
May. 23, 2017
Filed:
Apr. 03, 2014
Junichi Koezuka, Tochigi, JP;
Masahiro Katayama, Tochigi, JP;
Yukinori Shima, Tatebayashi, JP;
Kenichi Okazaki, Tochigi, JP;
Takuya Matsuo, Osaka, JP;
Shigeyasu Mori, Osaka, JP;
Yosuke Kanzaki, Osaka, JP;
Hiroshi Matsukizono, Osaka, JP;
Junichi Koezuka, Tochigi, JP;
Masahiro Katayama, Tochigi, JP;
Yukinori Shima, Tatebayashi, JP;
Kenichi Okazaki, Tochigi, JP;
Takuya Matsuo, Osaka, JP;
Shigeyasu Mori, Osaka, JP;
Yosuke Kanzaki, Osaka, JP;
Hiroshi Matsukizono, Osaka, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Abstract
Variation in the electrical characteristics of transistors is minimized and reliability of the transistors is improved. A display device includes a pixel portionand a driver circuit portionoutside the pixel portion. The pixel portion includes a pixel transistor, a first insulating layerwhich covers the pixel transistor and includes an inorganic material, a second insulating layerwhich is over the first insulating layer and includes an organic material, and a third insulating layerwhich is over the second insulating layer and includes an inorganic material. The driver circuit portion includes a driving transistor for supplying a signal to the pixel transistor, and the first insulating layer covering the driving transistor. The second insulating layer is not formed in the driver circuit portion.