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. 14, 2013
Filed:
Dec. 17, 2009
Jong Duck Kim, Gyunggi-do, KR;
Ho Jae Lee, Gyunggi-do, KR;
Jong Duck Kim, Gyunggi-do, KR;
Ho Jae Lee, Gyunggi-do, KR;
Abstract
The invention relates to a power supply for a liquid crystal display using a light emitting diode for a backlight unit, and more particularly, to a power supply combining a DC power supply outside the liquid crystal display with a driving power supply inside the liquid crystal display into a single power supply. The power supply for a liquid crystal display according to an aspect of the invention may include: a power conversion section converting commercial AC power into at least one operating power having a predetermined voltage level through a switching operation; a backlight driving section switching the operating power from the power conversion section into backlight driving power; and a power switching control section controlling the switching operation of the power conversion section on the basis of a first feedback signal having a voltage level of the operating power from the power conversion section and a second feedback signal having a voltage level of the backlight driving power from the backlight driving section, wherein the power conversion section, the backlight driving section and the power switching control section are mounted on a single printed circuit board.