| 摘要 |
PROBLEM TO BE SOLVED: To provide an indication display board at a low cost wherein an organic thin film electroluminescence element is used, use efficiency of light is high and consumption power is little. SOLUTION: An ITO(indium, tin, oxide) electrode 2, an organic compound layer 3, and a metal electrode layer 4 as a rear electrode are formed on a surface glass plate 1 by vacuum deposition. The respective layers are sandwiched by the surface glass plate 1 and a rear glass plate 5. A pattern of the metal electrode layer 4 is formed of a pattern of a display part 9 like a scale. In the part except the display part, an opaque printed layer 6 is formed as a light shielding layer. By applying a current to the ITO electrode 2 and the metal electrode layer 4, only the part of the organic compound layer 3 which corresponds to the display part 9 generates a light. When the current is cut off and the light is not generated, the display part 9 is displayed by luster of the metal electrode layer 9.
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