Abstract: A method of fabricating a color organic electroluminescent display involves forming cathode electrodes on a substrate, and forming a first organic semiconductor layer having an electron-injection transporting property on the cathode electrodes. Solutions containing organic light-emitting material that can dissolve portions of the first organic semiconductor layer are patterned on the first organic semiconductor layer. Then, a solvent in the solutions is removed to form regions having second organic semiconductor layers and mixed organic semiconductor layers, wherein the second organic semiconductor layers are formed on the first organic semiconductor layer and are mostly composed of the organic light-emitting material, and the mixed organic semiconductor layers, composed of the organic light-emitting material and material constituting the first organic semiconductor layer, are embedded in the first organic semiconductor layer. Anode electrodes are formed over the first and second organic semiconductor layers.

Abstract: A method of forming a continuous layer of film, the method comprising providing a substrate having a surface, forming a first patterned layer of film on the surface, the first patterned layer of film including a plurality of first film units separated from each other, and forming a second patterned layer of film over the first patterned layer of film, the second patterned layer of film extending along the first patterned layer of film and including a plurality of second film units separated from each other, each of the plurality of second film units connecting at least two immediately adjacent first film units of the first patterned layer of film

Abstract: A thin-film transistor and fabrication method thereof are provided. A controlled micro-line is formed by inkjet printing in combination with the coffee ring effect. At least two organic thin-film transistors are formed on two ring ridges of the coffee rings. For example, N-type and P-type soluble semiconductor materials may be formed on two adjacent ring ridges to form a complementary metal-oxide semiconductor (CMOS) device. Thus, the invention can simplify the process for fabricating thin-film transistors and increase their applications.

Abstract: A method of fabricating a color organic electroluminescent display involves forming cathode electrodes on a substrate, and forming a first organic semiconductor layer having an electron-injection transporting property on the cathode electrodes. Solutions containing organic light-emitting material that can dissolve portions of the first organic semiconductor layer are patterned on the first organic semiconductor layer. Then, a solvent in the solutions is removed to form regions having second organic semiconductor layers and mixed organic semiconductor layers, wherein the second organic semiconductor layers are formed on the first organic semiconductor layer and are mostly composed of the organic light-emitting material, and the mixed organic semiconductor layers, composed of the organic light-emitting material and material constituting the first organic semiconductor layer, are embedded in the first organic semiconductor layer. Anode electrodes are formed over the first and second organic semiconductor layers.

Abstract: A polymeric light emitting diode (PLED) device comprises: a substrate; a positive electrode formed above the substrate; a hole transportation layer formed above the positive electrode; an organic light emitting composite layer formed above the hole transportation layer, comprising a plurality of organic light emitting layers, wherein every organic light emitting layer has an polymeric host material with a higher energy gap, and at least one of the organic light emitting layers is doped with an polymeric material with a lower energy gap; and a negative electrode formed above the organic light emitting composite layer.