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. 12, 2020
Filed:
Nov. 27, 2018
Samsung Display Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Kihyun Pyun, Gwangmyeong-si, KR;
Yu-chol Kim, Pyeongtaek-si, KR;
Minyoung Park, Busan, KR;
Min-soo Choi, Hwaseong-si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
A display device includes a display panel, and a power management circuit including a switching regulator for supplying a power in a discontinuous conduction mode or in a continuous conduction mode, and a sensing circuit for sensing whether the switching regulator is operated in the discontinuous conduction mode, the switching regulator including a comparator for monitoring the supplied power, and an RS latch for receiving an output signal from the comparator, and the sensing circuit including a phase lock loop circuit for generating a first clock signal, a phase delay circuit for generating a second clock signal having a phase delayed from the first, and a determination circuit for outputting a first value when a pulse width of the output signal from the RS latch is small, and for outputting a second value when the pulse width of the output signal from the RS latch is not small.