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.

Date of Patent:
May. 05, 2020

Filed:

Aug. 08, 2018
Applicant:

Panasonic Liquid Crystal Display Co., Ltd., Himeji-shi, Hyogo, JP;

Inventors:

Hiroaki Goto, Osaka, JP;

Masafumi Hirata, Hyogo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/00 (2006.01); G09G 3/36 (2006.01); G09G 3/30 (2006.01); G09G 3/20 (2006.01); H01L 27/12 (2006.01); G02F 1/1368 (2006.01); G02F 1/13 (2006.01); G02F 1/1362 (2006.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G02F 1/1309 (2013.01); G02F 1/1368 (2013.01); G02F 1/136286 (2013.01); G09G 3/20 (2013.01); G09G 3/36 (2013.01); H01L 27/124 (2013.01); H01L 27/1214 (2013.01); H01L 27/1255 (2013.01); G02F 2001/136254 (2013.01); G09G 2330/12 (2013.01);
Abstract

A display device comprises: inspection transistors electrically connected to signal lines respectively; an inspection wiring through which an inspection signal is supplied to the inspection transistors; and an abnormality determination unit that determines whether the display panel is abnormal. The signal line is electrically connected to a gate electrode of the inspection transistor, and the abnormality determination unit determines whether the display panel is abnormal based on a voltage level of the inspection signal outputted from a source electrode of the inspection transistor.


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