Show simple item record

dc.contributor.authorKarslı, K.
dc.contributor.authorArık, Mehmet
dc.date.accessioned2016-02-17T06:33:25Z
dc.date.available2016-02-17T06:33:25Z
dc.date.issued2014
dc.identifier.urihttp://hdl.handle.net/10679/2770
dc.identifier.urihttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6897290
dc.descriptionDue to copyright restrictions, the access to the full text of this article is only available via subscription.
dc.description.abstractDue to recent advances in electronics, lighting and communication technologies, SMART Televisions (TV) have become more affordable, and are rapidly eplacing old-fashioned LCD (liquid crystal display) TV technologies. These TVs are nearly ten times thinner; they include much brighter displays, true-color ualities, at least two times faster refresh rates and smart communication features. While providing such advanced features, lighting has become a critical part of technology advancement. While the backlight unit consumes over 50% of total energy in TVs, light emitting diodes (LEDs) have rapidly replaced the conventional CCFL (Cold Cathode Fluorescent Lamp) based LCD backlight units due to their low energy consumption. The present study identifies the impact of optical solutions with high-power LEDs located at the corner of the backlight unit on the optical efficiency for an advanced TV system. Various optical designs are created and impacting metrics for novel LED backlight units are determined. A computational and experimental study has been performed to identify the optical-thermal interactions in a tight-space LED packaging for a slim TV. Optical modeling has been performed via Light Tools optical simulation software, while thermal modeling was performed via Icepak CFD software. Smart optical packaging resulted in an effective light distribution of minimum 75% brightness uniformity, with no MURA effect problem on the panel The thermal challenge was found to be immense; so a smart thermal packaging was vital. An experimental validation of computational models was also performed. While the target is obtaining a uniform light distribution generated by HB (high brightness) LEDs and reduction of cost by having fewer LEDs, optical structure is found to be very critical in terms of both optical efficiency and pattern design of the light guide plate (LGP), which is an essential part of slim LED TVs. The study is concluded with a detailed discussion of the impact on lum- nance uniformity and cost for advanced SMART TVs.
dc.description.sponsorshipTurkish Ministry of Science, Industry and Technology ; Vestel Elektronik Sanayi ve Ticaret A.S.
dc.language.isoengen_US
dc.publisherIEEE
dc.relation.ispartof2014 IEEE 64th Electronic Components and Technology Conference (ECTC)
dc.rightsrestrictedAccess
dc.titleEffect of optical design on the thermal management for the smart tv led backlight systemsen_US
dc.typeConference paperen_US
dc.peerreviewedyes
dc.publicationstatuspublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID124782
dc.contributor.ozuauthorArık, Mehmet
dc.identifier.startpage209
dc.identifier.endpage214
dc.identifier.wosWOS:000361546100035
dc.identifier.doi10.1109/ECTC.2014.6897290
dc.subject.keywordsLED displays
dc.subject.keywordsTelevision
dc.subject.keywordsThermal management (packaging)
dc.identifier.scopusSCOPUS:2-s2.0-84907889993
dc.contributor.authorMale1


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record


Share this page