Abstract: A BIOS locking device is connected to a BIOS chip of a computer apparatus to control a BIOS booting procedure. The computer apparatus communicates with a USB controller of the locking device via a communication protocol of a standard interface and recognizes this locking device as a USB-interface storage device. Then, the computer apparatus selects a fingerprint application program stored in a memory of the locking device according to a method of accessing a USB storage device and enables a fingerprint sensor to read a user's fingerprint so as to transfer to-be-identified fingerprint data corresponding to the fingerprint and an authorized data template previously stored in a main storage device of the computer apparatus to a main memory of the computer apparatus. A CPU of the computer apparatus compares the fingerprint data with the template, and allows the BIOS booting procedure if the comparison passes.

Abstract: An ink-jet print head with a chamber sidewall heating mechanism includes a substrate, an insulation layer on the substrate, a main channel penetrating through the substrate, a plurality of V-shaped micro-channels each having a diverging end linking with the main channel and a converging end linking with an ink chamber on the insulation layer, and a nozzle plate with a plurality of orifices formed on the ink chamber. The V-shaped micro-channels are perpendicular to the main channel and parallel to and arranged on the insulation layer. Each chamber sidewall includes a heater structure to evaporate ink in the chamber to form a bubble, which pushes the ink in the chamber to eject from the orifice.

Abstract: A capacitive fingerprint sensor against ESD damage and contamination interference includes a substrate, a plurality of plate electrodes, a metal mesh, a plurality of ESD units, a plurality of bonding pads, and a protection layer. The plate electrodes, bonding pads and metal mesh are positioned on the substrate at the same level, and are composed of the same material. The ESD units are connected to the metal mesh that is conducted to the ground, and are exposed via a plurality of first openings. Thus, electrostatic charges from a finger may be discharged through this path to the ground. The metal mesh is covered by the protection layer and is not exposed. The number of the ESD units is far less than that of the plate electrodes so as to reduce the contamination interference on the captured fingerprint image.