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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mengyu Huang Lan Li Chao Yuan Bin Xie Xingjian Yu Xiaobing Luo |
| Copyright Year | 2015 |
| Description | Author affiliation: Sch. of Energy & Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China (Mengyu Huang; Lan Li; Chao Yuan; Bin Xie; Xingjian Yu; Xiaobing Luo) |
| Abstract | To get white light emission, it's usual to use a blue LED chip covered with yellow emitting phosphor via a dispensing process. Stamp printing is such a process of free-surface flow, which decides the morphology of the phosphor gel, and thus has a great effect on the optical performance of LEDs. Therefore, it is important to study the phosphor gel flow in the stamp-printed coating process. In this paper, a flow model was established to simulate the coating process based on the two-dimensional Lattice Boltzmann method (LBM). With the model, dynamic morphology of phosphor gel was obtained. Two factors, the ratio of LED chip width to the width of stamp bump and phosphor gel volume, were investigated through simulations. In addition, complex phosphor layer morphology was achieved by adapting the two factors. |
| Starting Page | 1066 |
| Ending Page | 1069 |
| File Size | 681426 |
| Page Count | 4 |
| File Format | |
| e-ISBN | 9781467379991 |
| DOI | 10.1109/ICEPT.2015.7236764 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-08-11 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Lattices Light emitting diodes Numerical models Surface morphology Coatings Photonics stamp-printed coating process two phase flow numerical simulation Lattice Boltzmann method |
| Content Type | Text |
| Resource Type | Article |
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