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:
Aug. 02, 2022
Filed:
Apr. 27, 2018
Sharp Kabushiki Kaisha, Sakai, JP;
Tomoo Furukawa, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
Provided is a method for manufacturing a display device that allows easy and reliable repair of a pixel circuit by converting the pixel circuit into a black dot, and a display device. A repair wiring line configured to supply an off potential for turning a drive transistor to an off state is formed superimposed onto an impurity region of a semiconductor layer, interposed between a first compensation transistor and a second compensation transistor having a dual gate structure. The impurity region is irradiated with laser light, thereby connecting the impurity region and the repair wiring line. Then, the second compensation transistor is turned to an on state, thereby setting a potential of a node to the same potential as the off potential and turning the drive transistor to a normally-off state. As a result, a pixel circuit is converted into a black dot and thus repaired.