No, Sony is not the owner Vizio. Vizio is an independent company. All manufacturers who make the Vizio make things for Amtran Corporation. These include LG or Samsung OEM suppliers, depending on the manufactures the screen. Links can be found below for more information.
Sony commonly refers to the Sony Corporation, Sony Group, Sony Pictures Entertainment, Sony Computer Entertainment, Sony Music Entertainment, Sony Mobile Communications, and Sony Financial. It is ranked 73 on the 2011 list of Fortune Global 500.