| 摘要 |
PURPOSE:To reduce the quantity of high voltage resistance ICs and reduce cost by applying the laminated construction of an electroluminescence layer and a photoconducting layer, alternately applying voltage to electrodes classified into a plurality of groups and displaying information via the shift of a luminous point within a display panel. CONSTITUTION:An Al rear electrode 7 is classified into groups (a), (b) and (c). The same group of electrodes is bundled and connected to drive power supplies A, B and C. Also, the rightmost picture element (i) is connected to a power supply I for writing data. In the aforesaid constitution, voltage is alternately applied to the electrode 7 and when one picture element becomes luminous, the photoconducting layer thereof drops in resistance and a picture element adjacent thereto turns to be luminous as well. As a result of the continuous occurrence of the aforesaid operation, a luminous point moves. According to the aforesaid construction, it is possible to display an arbitrary pattern by adding data to the picture element (i). Consequently, the quantity of high voltage resistance ICs can be reduced, thereby ensuring cost reduction. |
