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59.4: LED Drivers: From Displays to General Lighting
Author(s) -
Keene Michael,
Kretzmer Michael,
Upton Graham
Publication year - 2010
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.3500622
Subject(s) - light emitting diode , led display , original equipment manufacturer , backlight , led lamp , computer science , smart lighting , integrator , telecommunications , engineering , architectural engineering , electrical engineering , liquid crystal display , operating system , bandwidth (computing)
The LED has come a long way from its humble beginnings as a simple indicator light to the plethora of applications for which it is used today. Market analysis suggests that it is still early in the LED's “coming out party” and that the next few years will see numerous industries greatly transformed by the introduction of today's higher efficacy, lower cost LEDs. Those of us in the display industry watched as LEDs slowly infiltrated some of the smaller display backlights and recently spread quickly to the medium and larger sized displays. As the LED is adopted into different mediums, special attention should be paid to the way in which the LEDs are driven in order to maximize total value. Although great advances have been made in IC and LED driver design; there is no one size fits all LED driver . Today's most savvy designers and integrators let their application needs and functional requirements dictate the best type of driver to install in their application. This paper will highlight some of the standard topologies currently employed to drive OEM LED displays and discuss some of the major hurdles that inhibit a generic backlighting driver from being implemented directly into general lighting.