| 摘要 |
PURPOSE:To obtain the operator console which is not influenced by a magnetic field, and can be used even under a strong magnetic field by placing a liquid crystal screen device to which a transparent plate is attached as a back plate of a cabinet on the upper face of a housing desk and using it as an operating screen. CONSTITUTION:On both sides of a liquid crystal 9, an oriented film 7, a transparent electrode 6 and a cell substrate 8 are arranged in this order and sealed, a liquid crystal display device 10 formed by holding both its sides between the upper polarizing plates 5 is placed in front of a cabinet 11, and in the inside of the cabinet 11 in the rear of the periphery of this liquid crystal display device 10, many light sources 12 whose condensing property is high are arranged. Also, a liquid crystal screen device 1 to which a transparent plate 13 is attached as a back plate of this cabinet 11 is placed on the upper face of a containing desk 5 and used as an operating screen. Accordingly, when light of the light source 12 is turned off, and also, a liquid crystal becomes a transparent state, the rear side of the operator console can be viewed through a screen of the liquid crystal screen device 1, and the process of the rear side can be directly with eyes. Also, this operator console is not influenced by a magnetic field, and can be used even under a strong magnetic field. |
