The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper reports a capacitive-type CMOSmicroelectromechanical system tactile sensor containing a capacitance-sensing gap filled with polymer. Thus, the equivalent stiffness of the tactile sensor can be modulated by the polymer fill-in, so as to further tune its sensing range. Moreover, the polymer fill-in has a higher dielectric constant to increase the sensitivity of the tactile sensor. In short,...
This paper presents a high efficiency LED driver that employs a current-mode buck regulator to energize four linear constant-current regulators. An auto-tuning procedure is introduced in to adjust the output voltage of buck regulator, which keeps the dropout voltage of the passive devices in linear regulators at a possible minimum level while maintaining high performance. Thus, the conversion efficiency...
This study reports a CMOS based optical focusing stage, which incorporates a binary phase-grating Fresnel-lens (PF-Lens). This PF-Lens is the first time implemented in CMOS micro stage. It exploits the superior fine line width and transparent dielectric thin film of CMOS process. Diffraction efficiency of PF-Lens is theoretically fourfold better than that of typical binary amplitude-grating Fresnel-lens...
This study presents a novel inertia sensor design to monolithic integrate x, y, and z-axis accelerometers on a single chip. The chip is implemented using the TSMC 0.35 mum 2P4M CMOS process, and post metal wet-etching and dielectric dry-etching processes. Thus, the fully-differential capacitance sensing in-plane and out-plane CMOS accelerometers are realized. The measurement results demonstrate the...
This study demonstrates the possibility of implementing lens system via CMOS process. The ever first CMOS based optical focusing system successfully demonstrated focusing capability, with 5um by 6um focus spot size at 6 Hum, and capable of moving focal point 12um in axial direction. This system is composed of a lens set and an electrothermal actuated optical bench. One PDMS dispensed planar-convex...
This study presents a novel CMOS out-of-plane linear accelerometer. This capacitance type out-of-plane accelerometer contains special designed gap-closing sensing electrode arrays with fully differential sensing circuits. Moreover, this study established a post-CMOS wet-etching process to realize a sub-micron sensing-gap between stationary and moving electrodes in the out-of-plane direction. Thus,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.