Wearable AR/VR displays have a long history and earlier efforts failed due to various limitations. Advances in various sensors, optical technologies, and computing technologies renewed the interest in this area. AR glasses can be the new computing platform and potentially replace smart phones but there are some challenges ahead. We have been working on various wearable display architectures and here we summarize our efforts on laser MEMS scanning displays, head-mounted projectors, and holographic near-eye displays.