In a display apparatus of a hold type represented by a TFT liquid crystal display, blurring of dynamic picture when the dynamic picture is displayed is improved. In one embodiment of the invention, the device incorporates the source for ionization in combination with a jet separator to efficiently remove excess carrier gas while permitting ions to be more efficiently transferred into the vacuum chamber of the mass spectrometer. The system includes a verification device and an actuator device contained within the controlled environment.