Planar lighting by blue LEDs array with remote phosphor

Chung-Hao Tien; Chien Hsiang Hung; Bo Wen Xiao; Hsin Tao Huang; Yi-Pai Huang; Chuang Chuang Tsai

doi:10.1117/12.841218

Planar lighting by blue LEDs array with remote phosphor

Chung-Hao Tien^*, Chien Hsiang Hung, Bo Wen Xiao, Hsin Tao Huang, Yi-Pai Huang, Chuang Chuang Tsai

^*Corresponding author for this work

Department of Photonics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

9 Scopus citations

Abstract

A novel direct-emitting LED backlit for LCDs was demonstrated. Unlike the conventional white LED schemes for display applications, proposed blue light excited planar lighting (BLPL) exploits blue LED chip to remotely excite the YAG-phosphor film and thus render a uniform planar source, where the YAG-phosphor acts as the diffuser film and wavelength down converter simultaneously. Based on the diffusing characterization of YAG-phosphor layer, we examined the optical properties of the BLPL system in viewpoints of uniformity, luminance and mixing capability. Consequently, a prototype 10-mm-thickness BLPL module was demonstrated with 86% uniformity and 9800 nits without using any diffuser film or light guiding plate.

Original language	English
Title of host publication	Light-Emitting Diodes
Subtitle of host publication	Materials, Devices, and Applications for Solid State Lighting XIV
DOIs	https://doi.org/10.1117/12.841218
State	Published - 2010
Event	Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV - San Francisco, CA, United States Duration: 26 Jan 2010 → 28 Jan 2010

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7617
ISSN (Print)	0277-786X

Conference

Conference	Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV
Country/Territory	United States
City	San Francisco, CA
Period	26/01/10 → 28/01/10

Keywords

Backlit
LCD
Light-emitting diodes

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10.1117/12.841218

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Tien, C.-H., Hung, C. H., Xiao, B. W., Huang, H. T., Huang, Y.-P., & Tsai, C. C. (2010). Planar lighting by blue LEDs array with remote phosphor. In Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV Article 761707 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7617). https://doi.org/10.1117/12.841218

@inproceedings{0829c1bf11ba426dbf2a82ebf3df431b,

title = "Planar lighting by blue LEDs array with remote phosphor",

abstract = "A novel direct-emitting LED backlit for LCDs was demonstrated. Unlike the conventional white LED schemes for display applications, proposed blue light excited planar lighting (BLPL) exploits blue LED chip to remotely excite the YAG-phosphor film and thus render a uniform planar source, where the YAG-phosphor acts as the diffuser film and wavelength down converter simultaneously. Based on the diffusing characterization of YAG-phosphor layer, we examined the optical properties of the BLPL system in viewpoints of uniformity, luminance and mixing capability. Consequently, a prototype 10-mm-thickness BLPL module was demonstrated with 86% uniformity and 9800 nits without using any diffuser film or light guiding plate.",

keywords = "Backlit, LCD, Light-emitting diodes",

author = "Chung-Hao Tien and Hung, {Chien Hsiang} and Xiao, {Bo Wen} and Huang, {Hsin Tao} and Yi-Pai Huang and Tsai, {Chuang Chuang}",

year = "2010",

doi = "10.1117/12.841218",

language = "English",

isbn = "9780819480132",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Light-Emitting Diodes",

note = "Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV ; Conference date: 26-01-2010 Through 28-01-2010",

}

Tien, C-H, Hung, CH, Xiao, BW, Huang, HT, Huang, Y-P & Tsai, CC 2010, Planar lighting by blue LEDs array with remote phosphor. in Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV., 761707, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7617, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV, San Francisco, CA, United States, 26/01/10. https://doi.org/10.1117/12.841218

Planar lighting by blue LEDs array with remote phosphor. / Tien, Chung-Hao; Hung, Chien Hsiang; Xiao, Bo Wen et al.
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XIV. 2010. 761707 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7617).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Planar lighting by blue LEDs array with remote phosphor

AU - Tien, Chung-Hao

AU - Hung, Chien Hsiang

AU - Xiao, Bo Wen

AU - Huang, Hsin Tao

AU - Huang, Yi-Pai

AU - Tsai, Chuang Chuang

PY - 2010

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N2 - A novel direct-emitting LED backlit for LCDs was demonstrated. Unlike the conventional white LED schemes for display applications, proposed blue light excited planar lighting (BLPL) exploits blue LED chip to remotely excite the YAG-phosphor film and thus render a uniform planar source, where the YAG-phosphor acts as the diffuser film and wavelength down converter simultaneously. Based on the diffusing characterization of YAG-phosphor layer, we examined the optical properties of the BLPL system in viewpoints of uniformity, luminance and mixing capability. Consequently, a prototype 10-mm-thickness BLPL module was demonstrated with 86% uniformity and 9800 nits without using any diffuser film or light guiding plate.

AB - A novel direct-emitting LED backlit for LCDs was demonstrated. Unlike the conventional white LED schemes for display applications, proposed blue light excited planar lighting (BLPL) exploits blue LED chip to remotely excite the YAG-phosphor film and thus render a uniform planar source, where the YAG-phosphor acts as the diffuser film and wavelength down converter simultaneously. Based on the diffusing characterization of YAG-phosphor layer, we examined the optical properties of the BLPL system in viewpoints of uniformity, luminance and mixing capability. Consequently, a prototype 10-mm-thickness BLPL module was demonstrated with 86% uniformity and 9800 nits without using any diffuser film or light guiding plate.

KW - Backlit

KW - LCD

KW - Light-emitting diodes

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M3 - Conference contribution

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Light-Emitting Diodes

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Y2 - 26 January 2010 through 28 January 2010

ER -

Planar lighting by blue LEDs array with remote phosphor

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