| 摘要 |
PURPOSE:To improve strength in luminescence by making the surfaces of a transparent electrode, a first insulation layer, a semiconductor layer and a second insulation layer uneven, and by making the surface of a metal layer flat. CONSTITUTION:On a glass base 1 whose surface is uneven, a transparent electrode 2, a first insulation layer 3, a semiconductor layer 4, a second insulation layer 5, and an electrode 6 are formed. On the uneven base 1, insulation layers 3, 5 and the semiconductor layer 4 are formed in thin films with approximately even thicknesses along the unevenness and therefore the substantial area of the semiconductor layer 4 increases with respect to the luminescent area of an element. Luminescence per unit area of the element increases as the luminescence is in proportion to the area of the semiconductor layer 4. Luminescence intensity of the element increases in this way.
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