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:
Nov. 06, 2018
Filed:
Nov. 16, 2015
Joled Inc., Tokyo, JP;
Toshiyuki Kato, Tokyo, JP;
JOLED INC., Tokyo, JP;
Abstract
A display device includes pixel units, a source driver and a control unit. The source driver applies voltage corresponding to gray level values to data signal lines. Each of the pixel units includes a light-emitting element, a capacitance element and a driving transistor. The light-emitting element emits light according to a driving current. The capacitance element accumulates charge corresponding to a voltage at a connected data signal line. The driving transistor supplies the driving current corresponding to the accumulated charge to the light-emitting element. The control unit decreases voltage(s) to be outputted from the source driver, when an appearance frequency of display pixels having a low gray-level value is lower than a first reference frequency, or when an appearance frequency of display pixels having a high gray-level value is lower than a second reference frequency.