Plane display device for reducing ground electric current disturbance

The invention provides a liquid crystal display screen which comprises a conductive casing, a plurality of circuits, and at least a filtration unit, wherein each circuit includes a reference voltage in electric connection with a reference voltage level, when the reference voltage end of each circuit is in electric connection to the casing, the filtration unit is in electric connection between thecasing and an grounding end, or when the casing is in electric connection to the grounding end, a plurality of filtration units are in electric connection between the reference voltage ends of each circuit and the casing respectively. 本发明是提供一种液晶显示屏幕，可衰减或滤除来自大地电流的干扰。该液晶显示屏幕包括有一导电的壳体，多个电路，以及至少一过滤单元。每一电路包括有一参考电压端电连接于一参考电压水平。当各电路的参考电压端均电连接于该壳体时，则一过滤单元是电连接于该壳体与一接地端之间；或者当该壳体电连接于该接地端时，多个过滤单元则分别电连接于各电路的参考电压端与该壳体之间。