Laser & Optoelectronics Progress, Volume. 47, Issue 7, 72301(2010)
Optimized Research on Conformal-Coating Technology of Power White LEDs
Conformal-coating technology of power white LEDs uses PVA+ADC water-solution compounding yellow phosphor to coat on the surface of the die,then gets planar structure of the phosphor though exposure and developing. The luminous efficacy of the white LEDs is finally increased (higher than 100 lm/W for one die) though optimizing the technology including the stabilization of processing step and exposure time,confining the every element including comparison experiment of darkroom and the control of temperature. It is stabilized in color temperature of 5000 K and luminous efficacy of 90 lm/W.
Get Citation
Copy Citation Text
He Yuan, Rao Haibo, Ju Jianjun, Hu Yue, Shen Fahua, Gao Hansong, Wan Yuantao. Optimized Research on Conformal-Coating Technology of Power White LEDs[J]. Laser & Optoelectronics Progress, 2010, 47(7): 72301
Category: Optical Devices
Received: Sep. 18, 2009
Accepted: --
Published Online: Jun. 1, 2010
The Author Email: Yuan He (oddkiller@sina.com)