Abstract: An installing module includes a seat bracket, a plurality of lower gaskets, a device bracket and an upper gasket. The seat bracket includes a first locking plate and a second locking plate locked to each other. The first locking plate includes a first concave and the second locking plate includes a second concave corresponding to the first concave. The lower gaskets are respectively disposed on the first concave and the second concave. The lower gaskets face each other and jointly define a lower assembly hole and are disposed on a lower side of a head-support fixer of a car seat. The device bracket is locked to the seat bracket and an electronic device is pivotally coupled to the device bracket. The upper gasket is disposed between the device bracket and the head-support fixer, and the head-support fixer is clamped between the upper gasket and the lower gaskets.

Abstract: A front and rear compound liquid crystal display includes a liquid crystal film which is selectively disposed in front of or behind an image display unit. The liquid crystal film can be controlled in a transparent, translucent or opaque state. In case the liquid crystal film is disposed in front of the image display unit, when the liquid crystal film is in the opaque state, it can function as a white board; when the liquid crystal film is in the transparent state, it can display the content of the image display unit. In case the liquid crystal film is disposed behind the image display unit, when the liquid crystal film is in the transparent state, it has visual penetration; when the liquid crystal film is in the opaque state, it can function as a reflection plate for the image of the image display unit to be displayed clearly.

Abstract: A front and rear compound liquid crystal display includes a liquid crystal film which is selectively disposed in front of or behind an image display unit. The liquid crystal film can be controlled in a transparent, translucent or opaque state. In case the liquid crystal film is disposed in front of the image display unit, when the liquid crystal film is in the opaque state, it can function as a white board; when the liquid crystal film is in the transparent state, it can display the content of the image display unit. In case the liquid crystal film is disposed behind the image display unit, when the liquid crystal film is in the transparent state, it has visual penetration; when the liquid crystal film is in the opaque state, it can function as a reflection plate for the image of the image display unit to be displayed clearly.

Abstract: A wireless charge and discharge wrist band for placing a cell phone includes a watch band. The watch band is embedded with a plurality of batteries. The watch band has V-shaped grooves between the batteries. The watch band is provided with a watch seat. The watch seat has an engaging trough thereon. The bottom of the watch seat is provided with a charge coil, and the top of the watch seat is provided with a power supply coil. The charge coil and the power supply coil are connected with the batteries. The engaging trough is adapted for engagement of the cell phone. Through electromagnetic induction to transmit power, the cell phone can be charged anytime. During charging, the cell phone can be used and taken along. The watch band can be in different colors to mate with cell phone to enhance its fashion.