A complementary matching technique to reduce the variance of optical and electrical properties of light-emitting diodes

Guan Bo Lin; Martin F. Schubert; Jaehee Cho; E. Fred Schubert; Hyungkun Kim

doi:10.1889/JSID19.6.431

A complementary matching technique to reduce the variance of optical and electrical properties of light-emitting diodes

Guan Bo Lin^*
, Martin F. Schubert
, Jaehee Cho
, E. Fred Schubert
, Hyungkun Kim

^*Corresponding author for this work

Department of Semiconductor Science and Technology

Rensselaer Polytechnic Institute
Samsung

Research output: Contribution to journal › Journal article › peer-review

1 Scopus citations

Abstract

Light-emitting diodes (LEDs) using phosphor conversion inherently have a wide variation of multiple parameters, including correlated color temperature (CCT), light output power (LOP), and forward voltage V_F. A method, based on the formation of LED pairs with complementary characteristics, is presented to produce LED-based light sources with narrow CCT, LOP, and V _F distributions. A weighted matching algorithm was developed to select LED pairs under a multiple selection criteria. Based on the weighted matching algorithm, 96 LEDs were combined to form 48 LED pairs, and it was experimentally demonstrated that the variance of LED CCT and LOP distributions decreased by 93% and 71%, respectively.

Original language	English
Pages (from-to)	431-434
Number of pages	4
Journal	Journal of the Society for Information Display
Volume	19
Issue number	6
DOIs	https://doi.org/10.1889/JSID19.6.431
State	Published - 2011.06

Keywords

Color uniformity
Complementary LEDs
LED backlighting

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10.1889/JSID19.6.431

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title = "A complementary matching technique to reduce the variance of optical and electrical properties of light-emitting diodes",

abstract = "Light-emitting diodes (LEDs) using phosphor conversion inherently have a wide variation of multiple parameters, including correlated color temperature (CCT), light output power (LOP), and forward voltage VF. A method, based on the formation of LED pairs with complementary characteristics, is presented to produce LED-based light sources with narrow CCT, LOP, and V F distributions. A weighted matching algorithm was developed to select LED pairs under a multiple selection criteria. Based on the weighted matching algorithm, 96 LEDs were combined to form 48 LED pairs, and it was experimentally demonstrated that the variance of LED CCT and LOP distributions decreased by 93\% and 71\%, respectively.",

keywords = "Color uniformity, Complementary LEDs, LED backlighting",

author = "Lin, \{Guan Bo\} and Schubert, \{Martin F.\} and Jaehee Cho and Schubert, \{E. Fred\} and Hyungkun Kim",

year = "2011",

month = jun,

doi = "10.1889/JSID19.6.431",

language = "English",

volume = "19",

pages = "431--434",

journal = "Journal of the Society for Information Display",

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T1 - A complementary matching technique to reduce the variance of optical and electrical properties of light-emitting diodes

AU - Lin, Guan Bo

AU - Schubert, Martin F.

AU - Cho, Jaehee

AU - Schubert, E. Fred

AU - Kim, Hyungkun

PY - 2011/6

Y1 - 2011/6

N2 - Light-emitting diodes (LEDs) using phosphor conversion inherently have a wide variation of multiple parameters, including correlated color temperature (CCT), light output power (LOP), and forward voltage VF. A method, based on the formation of LED pairs with complementary characteristics, is presented to produce LED-based light sources with narrow CCT, LOP, and V F distributions. A weighted matching algorithm was developed to select LED pairs under a multiple selection criteria. Based on the weighted matching algorithm, 96 LEDs were combined to form 48 LED pairs, and it was experimentally demonstrated that the variance of LED CCT and LOP distributions decreased by 93% and 71%, respectively.

AB - Light-emitting diodes (LEDs) using phosphor conversion inherently have a wide variation of multiple parameters, including correlated color temperature (CCT), light output power (LOP), and forward voltage VF. A method, based on the formation of LED pairs with complementary characteristics, is presented to produce LED-based light sources with narrow CCT, LOP, and V F distributions. A weighted matching algorithm was developed to select LED pairs under a multiple selection criteria. Based on the weighted matching algorithm, 96 LEDs were combined to form 48 LED pairs, and it was experimentally demonstrated that the variance of LED CCT and LOP distributions decreased by 93% and 71%, respectively.

KW - Color uniformity

KW - Complementary LEDs

KW - LED backlighting

UR - https://www.scopus.com/pages/publications/79957612248

U2 - 10.1889/JSID19.6.431

DO - 10.1889/JSID19.6.431

M3 - Journal article

AN - SCOPUS:79957612248

SN - 1071-0922

VL - 19

SP - 431

EP - 434

JO - Journal of the Society for Information Display

JF - Journal of the Society for Information Display

IS - 6

ER -

A complementary matching technique to reduce the variance of optical and electrical properties of light-emitting diodes

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Keywords

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