Opto Tech Corporation

Yen-Shih Huang

Jwo-Huei Jou

Feng-Ju Chuang

Ming-Der Lin

San-bao Lin

Yung-Sheng Chiu

Min-Der Lin

An organic electroluminescent device with the feature of three-wavelength luminescence is provided. The device includes a hole transporting layer, an electron blocking layer, a first host material layer, a second host material layer, a hole blocking layer, and an electron transporting layer placed between an anode and a cathode in turn. In which, the first host material layer has a first guest luminous substance mixed therein for projecting a first color light source (B), while the second host material layer correspondingly has a second guest luminous substance and a third guest luminous substance mixed therein for projecting a second color light source (G) and a third color light source (R), respectively, under the effect of an external bias voltage, wherein said second guest luminous substance or said third guest luminous substance may be a phosphorescence substance. Thus, not only a continuously full-band, full-colored light source featuring three-wavelength may be acquired directly by means of the combination of RGB colors, but also an effective utilization of phosphorescence substance and thus significantly raised luminescence efficiency may be obtained.

Organic electroluminescent device and method for producing the same

The present invention discloses an electroluminescent device with a drying film and a method for fabricating the same. The present invention is characterized in that the method comprises: providing a substrate; forming, in sequence from substrate up, a transparent electrode, a luminescent layer, and an opposed electrode; and forming a drying film by providing a raw material composed of barium (Ba), magnesium (Mg) or calcium (Ca) to react with a gaseous reactant composed of oxygen on the surface of the opposed electrode. The drying film composed of barium oxide (BaO), magnesium oxide (MgO) or calcium oxide (CaO) can be employed to absorb the moisture. Therefore, the generation of dark spots can be prevented and the reliability of the device can be improved.

Electroluminescent device with drying film and method for fabricating the same

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Fengyuan, Taiwan

Yen-Shih Huang