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| 1 | Emerging trend for LED wafer level packaging显示文摘最当前点亮射出二极管(带) 部件与包装技术的单个薄片被做。主要生产过程跟随包装的常规基于薄片的 IC。在过去的几年里,在 IC 工业有一个升起的趋势从到包装的晶片水平(WLP ) 的基于薄片的包装移居。因此,有需要让 LEDs 追上来。这份报纸介绍先进带的 WLP 技术。内容盖住象硅亚山晶片,互联的实现,黄磷的免职,晶片水平封装,和他们的集成的准备那样的关键创新过程。强调被放在怎么完成高产量上,通过 WLP 生产的低费用。 | S.W.Ricky LEE Rong ZHANG K.CHEN Jeffery C.C.LO | 2012 | Frontiers of Optoelectronics2012，5，2： | 2 |
| 2 | Spacing optimization of high power LED arrays for solid state lighting显示文摘This paper provides an analytical approach to determine the optimum pitch by utilizing a thermal resistance network,under the assumption of constant luminous efficiency.This work allows an LED array design which is mounted on a printed circuit board(PCB) attached with a heat sink subject to the natural convection cooling. Being validated by finite element(FE) models,the current approach can be shown as an effective method for the determination of optimal component spacing in an LED array assembly for SSL. | Y.Sing Chan S.W.Ricky Lee | 2011 | Journal of Semiconductors2011，32，1： | 0 |
| 3 | Phosphor-free microLEDs with ultrafast and broadband features for visible light communications显示文摘Modulation bandwidth and the emission region are essential features for the widespread use of visible light communications(VLC).This paper addresses the contradictory requirements to achieve broadband and proposes ultrafast,asymmetric pyramids grown on adjacent deep concave holes via lateral overgrowth.Multicolor emission with an emission region between 420 nm and 600 nm is obtained by controlling the growth rate at different positions on the same face,which also can provide multiple subcarrier frequency points for the employment of wavelength division multiplexing technology.The spontaneous emission rate distinction is narrowed by lowering the number of the crystal plane,ensuring a high modulation bandwidth over broadband.More importantly,the residual stress and dislocation density were minimized by employing a patterned substrate,and lateral overgrowth resulted in a further enhancement of the recombination rate.Finally,the total modulation bandwidth of multiple subcarriers of the asymmetric pyramids is beyond GHz.These ultrafast,multicolor microLEDs are viable for application in VLC systems and may also enable applications for intelligent lighting and display. | Zhenhuan Tian Qiang Li Xuzheng Wang Mingyin Zhang Xilin Su Ye Zhang Yufeng Li Feng Yun S.W.Ricky Lee | 2021 | Photonics Research2021，9，4： | 0 |
| 4 | Mechanical system and dynamic control in photolithography for nanoscale fabrication: A critical review显示文摘As one of the most advanced and precise equipment in the world,a photo-lithography scanner is able to fabricate nanometer‐scale devices on a chip.To realize such a small dimension,the optical system is the fundamental,but the me-chanical system often becomes the bottleneck.In the photolithography,the ex-posure is a dynamic process.The accuracy and precision of the movement are determined by the mechanical system,which is even more difficult to control compared with the optical system.In the mechanical system,there are four crucial components:the reticle and wafer stages,the linear motor,the metrology system,and the control system.They work together to secure the reticle and substrate locating at the correct position,which determines the overlay and alignment per-formance in the lithography.In this paper,the principles of these components are reviewed,and the development history of the mechanical system is introduced. | Yi Song Chengqun Gui Zongliang Huo S.W.Ricky Lee Sheng Liu | 2021 | International Journal of Mechanical System Dynamics2021，1，1： | 0 |
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