Abstract: An anti-peep display device includes a display module and an anti-peep module disposed on the display module. The anti-peep module includes the following features. The first light incident surface faces the display surface, the second and third light incident surfaces are located on opposite sides of the first light incident surface, the first condensing portion is disposed corresponding to the second light incident surface and the first light source, the second condensing portion is disposed corresponding to the third light incident surface and the second light source, the first and second condensing portions convert beams of the first and second light sources into anti-peep beams with a beam angle less than 10 degrees, and the optical microstructures reflect the anti-peep beams and exit the anti-peep beams from the light guide plate. The present invention also provides an anti-peep method applicable to the anti-peep display device.

Abstract: A method to form a plurality of inductors in a single process by placing multiple coils on a first magnetic sheet, and then stacking magnetic layers on the first magnetic sheet to encapsulate the coils so as to from a large magnetic body, and then cutting the large magnetic body into multiple inductors, wherein a terminal part of the coil disposed on the bottom surface of the magnetic body of the inductor is extended away from the axis of the coil and is entirely located at a same side of the axis of the coil.

Abstract: A data synchronization method establishes a communication channel between a terminal device and a cloud server through a network. The terminal device accesses the cloud server through the communication channel, and registers a private data space in a data center of the cloud server. Then the method transmits data of the terminal device to the private data space through the communication channel according to user requirements, to back up the data of the terminal device to the private data space.

Abstract: A drill includes a flute and a shank, a feed screw extends axially from an end of the flute. A plurality of first cutting edges extend radially from the flute and are arranged in spiral form. A plurality of second cutting edges are formed on respective tops of the first cutting edges and these second cutting edges are dull when compared with the first cutting edges. Each second cutting edge has a thick support portion connected at a root portion thereof.

Abstract: A MULTIPLE SPUR MULTIPLE SPIRAL GROOVE TWIST DRILL includes a flute, whose shank is clamped and secured to a tooling holder of a drilling machine and contains multiple spiral flute grooves; each flute groove is disposed on its peripheral a flute land, a cutting section is formed on a front tip of the flute land; a spur formed at where the cutting section and the flute land crossing each other; and a lead screw point with tapered thread being disposed at a center on the front of the flute to increase strength of the cutting section; and the flute groove in conjunction with the flute to fortify the overall structural strength to provide longer service life and cost benefits of the drill.