Abstract:
A fan filter unit (FFU) includes a fan, and a filter screen coupled with an air inlet of the fan. An air inlet of the filter screen is further configured with an auxiliary filter screen, and a minimum diameter of dust particles filtrated by the auxiliary filter screen is greater than a minimum diameter of the dust particles filtrated by the filter screen.
Abstract:
A detecting apparatus for determining whether liquid crystal glasses are displaced in a cartridge is disclosed. The detecting apparatus includes: a signal sensing device for sending sensing signals to an internal of the cartridge and for receiving the reflected signals from the internal of the cartridge; a reflector installed in the internal of the cartridge for receiving the sensing signals from the signal sensing device and for reflecting the sensing signals back to the signal sensing device; and wherein a determination of whether the liquid crystal glass is displaced in the cartridge is made by determining whether the reflected signals from the reflector are received after the sensing signals are sent. Upon determining whether liquid crystal glasses are displaced in the cartridge, impurities are prevented from getting into the cartridge and thus the cleanliness is enhanced and the labor power is reduced.
Abstract:
A roller structure for conveying glass substrates is disclosed. The roller structure includes a rolling axis and a plurality of rollers fasten to the rolling axis. Two adjacent rollers are arranged at a certain distance. At least one of the rollers includes a main wheel and a secondary wheel coaxially arranged with the main wheel. The main wheel and the secondary wheel have respective support point for conveying the glass substrates. A distance between the two support points and the rolling axis is the same and adjustable. By adding the number of the wheels and the support points in the limited space, the distances between the adjacent support points are reduced.