Abstract: Disclosed is a fluid control device for de-vacuuming in a wafer grinding apparatus. The fluid control device has a linear driver which drives a positioning seat to move upward and downward, several drain tubes are respectively disposed in the positioning seat, several flexible covers are respectively attached to each of the drain tubes, a converting seat is disposed on a support frame, and several flow diverters are arranged at intervals on the support frame. Several relay channels are formed within the converting seat and each of the flexible covers corresponds with each of the relay channels individually, the other end of each relay channel communicates with several relay tubes. Each flow diverter is connected to several conveying tubes, and communicates with several conveying tubes correspondingly, whereby the flow is controlled to enter the wafer grinding apparatus between the upper grinding wheel and the wafer subjected to the grinding thereof.

Abstract: The invention provides a detachable base support including a support, a base plate, and a latch. The support includes a protrusion which has a latch hole. The base plate has a receiving space for accommodating the protrusion. The latch is movably connected to the base plate. When the protrusion is inserted into the receiving space, the latch moves to a first position allowing a portion of the latch to pass through the latch hole for fixing the support onto the base plate.

Abstract: A flat panel display device. The flat panel display device comprises a base structure, a panel module, and a retaining structure. The base structure has a positioning hole, extending in a first direction and a second direction. The panel module comprises an engaging portion, inserted in the positioning hole such that the panel module is positioned in a predetermined position of the base structure. The engaging portion and the positioning hole prohibit the panel module from moving in the first direction. The retaining structure is disposed in the base structure. When the panel module is at the predetermined position, the retaining structure prevents the panel module from moving in the second direction.

Abstract: The invention provides a detachable base support including a support, a base plate, and a latch. The support includes a protrusion which has a latch hole. The base plate has a receiving space for accommodating the protrusion. The latch is movably connected to the base plate. When the protrusion is inserted into the receiving space, the latch moves to a first position allowing a portion of the latch to pass through the latch hole for fixing the support onto the base plate.