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    • 82. 发明授权
    • Image sensor in which illumination by electroluminescent device is
synchronized with reading operation
    • 图像传感器,其中电致发光器件的照明与读取操作同步
    • US5384456A
    • 1995-01-24
    • US934326
    • 1992-08-25
    • Toshihiro SaikaHidemasa MizutaniNoriyuki KaifuToshio Kameshima
    • Toshihiro SaikaHidemasa MizutaniNoriyuki KaifuToshio Kameshima
    • G09F13/22G02F1/13357H04N1/028H04N1/031H04N1/04H04N5/66H05B33/08H05B33/12H05B33/26H01J40/14
    • H04N1/0316G02F1/133603H04N1/0313
    • An electroluminescent device comprising a first electrode, a second electrode and an electroluminescence emission zone, the electroluminescence emission zone being made of a first electroluminescence emission layer, a second electroluminescence emission layer, and a transparent electrode which is interposed between the first electroluminescence emission layer and the second electroluminescence emission layer. At least either the first electrode or the second electrode is a transparent electrode. The first electroluminescence emission layer and the second electro luminescence emission layer emit light by applying a driving voltage to the transparent electrode with both the first electrode and the second electrode connected to a power supply for a reference voltage. In an image sensor using such an electroluminescent device as a light source, the electric field produced by the driving signal of the electroluminescent device does not escape outward, presenting no interfering noise to the image sensor. The resulting light quantity is almost double that of devices with only a single electroluminescent layer, substantially enhancing a resulting image. As a result, a high S/N ratio image sensor may be fabricated.
    • 一种电致发光器件,包括第一电极,第二电极和电致发光发射区,所述电致发光发射区由第一电致发光发射层,第二电致发光发射层和透明电极构成,所述第一电致发光发射层,第二电致发光发射层和透明电极介于第一电致发光发射层和 第二电致发光层。 至少第一电极或第二电极是透明电极。 第一电致发光发射层和第二电致发光发射层通过向透明电极施加驱动电压而发光,第一电极和第二电极都连接到用于参考电压的电源。 在使用这种电致发光器件作为光源的图像传感器中,由电致发光器件的驱动信号产生的电场不向外逸出,对图像传感器不产生干扰噪声。 所得到的光量几乎是仅具有单一电致发光层的装置的两倍,从而显着增强了所得到的图像。 结果,可以制造高S / N比的图像传感器。