Abstract: There is provided an optical sensor package including a substrate, a base layer, an optical detection region, a light source and a light blocking wall. The base layer is arranged on the substrate. The light detection region and the light source are arranged on the base layer. The light blocking wall is arranged on the base layer, and located between the light detection region and the light source to block light directly propagating from the light source to the light detection region.

Abstract: A conveying unit includes a housing; a collision prevention mechanism disposed on a sidewall of the housing; a gripping member configured to hold a carrier for carrying a semiconductor structure; a sensor disposed on the gripping member and configured to measure and collect data associated with vibration of the gripping member; and an unit controller disposed on the gripping member and configured to analyze the data from the sensor and control a movement of the conveying unit.

Abstract: A method for operating a conveying system is provided. An overhead hoist transport (OHT) vehicle is provided, wherein the OHT vehicle includes a gripping member configured to grip and hold a carrier, and a receiver configured to receive a signal. The signal is transmitted to the receiver of the OHT vehicle. The OHT vehicle is moved toward the carrier, and the carrier is gripped by the gripping member of the OHT vehicle. A lifting force is determined based on a weight of a carrier, a number of workpieces in the carrier, or a vertical distance between the OHT vehicle and the carrier, and the lifting force is applied to the carrier.

Abstract: This invention relates to an interlocking type plastic tile structure in which the surface layer having a pattern thereon is coated with adhesive and then is combined with a PVC base layer adhered to the floor. A plurality of protruding tongues and a plurality of notches are respectively formed on two adjacent sides of the PVC base layer. With this structure, when two such plastic tiles are interlocked with respect to each other, the notches having adhesive layer are interlocked and adhered with the protruding tongues correspondingly so as to achieve assembly and good alignment. Besides, there is no need for providing release paper, therefore cost can be saved and assembly is very convenient.

Abstract: A printing machine for plastic tile with a feeding correction device comprises a central electric sensing eye disposed on a first layer of the plastic tile for detecting a position of the tile. The first layer further has a length-sensing line detected by an electric length-sensing eye. The printing machine further has a calculation unit capable of caculating data from the electric eyes for correcting a roller of the first layer. A code translator is fitted to a spindle of the printing roller. A feeding roller is arranged in front of the first roller, and is driven by a feeding motor. The feeding motor is controlled in respect of speed by the calculation unit to print on the first layer having preset print in a desired position after the calculation unit has received the data from the electric eyes and a turning speed datum of the printing roller from the code translator.