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:
Dec. 18, 2018
Filed:
May. 22, 2015
Applicant:
Joled Inc., Tokyo, JP;
Inventor:
Nobuo Saito, Tokyo, JP;
Assignee:
JOLED INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 5/10 (2006.01); G09G 3/00 (2006.01); G09F 9/00 (2006.01); H01L 51/50 (2006.01); H05B 33/10 (2006.01); H05B 33/12 (2006.01); G09G 3/34 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G09F 9/00 (2013.01); G09G 3/3406 (2013.01); H01L 51/0031 (2013.01); H01L 51/50 (2013.01); H05B 33/10 (2013.01); H05B 33/12 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/043 (2013.01); G09G 2320/045 (2013.01); G09G 2320/048 (2013.01); G09G 2320/0693 (2013.01); G09G 2330/12 (2013.01); G09G 2360/145 (2013.01); G09G 2360/16 (2013.01); H01L 2251/562 (2013.01);
Abstract
A display device manufacturing method includes: lighting up a display device for a predetermined period; measuring, as first brightness, brightness of the display device at a start of lighting; measuring, as second brightness, brightness of the display device when the predetermined period has elapsed; calculating a deterioration rate of the second brightness with respect to the first brightness; and discriminating the display device as a defective item if the deterioration rate is greater than a threshold value.