I-Corps: A New Approach to Silicon/Compound Semiconductor Integration

I-Corps：硅/化合物半导体集成的新方法

• 批准号: 1217019
• 负责人: Ioannis Kymissis
• 金额: $ 5万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-03-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1217019&HistoricalAwards=false
• 关键词: Corps; New; Approach; Silicon; Compound

A monolithically integrated LED array is being developed with applications in the projection display industry and other non-display market areas such as scanning, computational photography, and depth analysis. The team's process begins with a compound semiconductor LED wafer upon which individual LED pixels are lithographically patterned to create a display. Light is generated from each individual LED pixel only where and when needed for the display. Both an active and passive matrix version are under development, the active matrix version uses laser crystallized polycrystalline silicon, whereas the passive matrix version takes advantage of direct addressing and/or rectification in the LEDs. The final calculated light path efficiency is approximately 75%, which represents a 5-10X improvement over the efficiency in current commercial systems. The reduced parts count allows for a smaller total system size, a smaller bill of materials, and a dramatically-decreased system cost for both direct view and projection microdisplays. This approach increases the brightness, decreases the cost, and reduces the overall size of this class of displays, eliminating the obstacles for mainstream adoption of this system in display and non-display markets.This system has the potential to develop a picoprojector with a power efficiency, brightness, cost, and form factor unavailable in incumbent systems. In addition to applications in displays, picoprojectors with this efficiency, brightness, and form factor can be used in a number of other applications including depth imaging, in-situ guidance for medical procedures, and computational photography. Commercialization of this device will impact all of these areas and enable a range of new downstream applications. This approach will also demonstrate the potential for commercial integration of compound semiconductors with silicon using laser recrystallization.This approach also has the potential to impact a range of other devices that currently use silicon backplanes integrated with compound semiconductor devices, such as focal plane imagers. These devices, which are primarily used in hyperspectral imagers today, have a range of applications in the medical, military, earth science, and metrology space and further development in this area has the potential to impact these project areas as well.

正在开发单层集成的LED阵列，并在投影显示行业和其他非放映市场领域（例如扫描，计算摄影和深度分析）中进行了应用。 该团队的过程始于复合半导体LED晶圆，单个LED像素在该图案上具有图案化以创建显示屏。每个单独的LED像素才能在显示器的位置和需要时生成光。主动矩阵版本都在开发中，活动矩阵版本都使用激光结晶的多晶硅，而被动矩阵版本则利用LED中的直接地址和/或整流。最终计算的光路效率约为75％，这比当前商业系统的效率提高了5-10倍。减少的零件计数允许较小的总系统尺寸，较小的材料账单以及直接视图和投影微型播放的系统成本急剧下降。这种方法提高了亮度，降低了成本并降低了此类显示屏的整体规模，从而消除了该系统在展示和非播放市场中主流采用的障碍。本系统有可能通过功率效率，明亮性，成本和形式的因素在外观的外观系统中开发出皮科保护器。除了显示器中的应用外，具有这种效率，亮度和外形效果的皮科注射器还可以用于许多其他应用中，包括深度成像，医疗程序原位指南和计算摄影。该设备的商业化将影响所有这些领域，并启用一系列新的下游应用程序。 这种方法还将证明使用激光再结晶将复合半导体与硅的商业整合。此方法还具有影响一系列其他设备，这些设备当前使用与复合半导体设备积分的硅背板，例如焦平面成像器。这些设备在当今主要用于高光谱成像仪中，在医学，军事，地球科学和计量空间以及该领域的进一步发展中都有一系列应用，也有可能影响这些项目领域。