A display device comprising a first semiconductor stripe and a second stripe of composite structure in which a great number of successive areas alternate between a semiconductor material having different type with respect to that of the first stripe and an insulating material or materials and which is positioned in side-by-side contact relation to the first stripe to establish P-N junctions. A resistor stripe connected lengthwise to the second stripe so that a voltage proportional to a value of information which is desired to be displayed is applied across a third stripe when first stripe is negatively biased, a corresponding number of successive semiconductor areas in the second stripe are caused to emit visible light, giving a viewer the impression of a continuous luminous stripe having a length representative of the information value.