METHOD OF FABRICATING AN ORGANIC ELECTROLUMINESCENT DEVICE AND SYSTEM OF DISPLAYING IMAGES
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Abstract
A method for fabricating organic electroluminescent devices is disclosed. The method comprises providing a substrate divided into first and second regions, forming an amorphous silicon layer on the substrate, forming a protection film on the amorphous silicon layer within the second region, performing an excimer laser annealing process on the amorphous silicon layer for converting it to a polysilicon layer, removing the protection film, patterning the polysilicon layer, thus a first patterned polysilicon layer in the first region and a second patterned polysilicon layer in the second region are formed. A resultant organic electroluminescent device is obtained. Specifically, the grain size of the first patterned polysilicon layer is large than that of the second patterned polysilicon layer.
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Citations
34 Claims
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1-20. -20. (canceled)
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21. A method for fabricating organic electroluminescent devices, comprising:
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providing a substrate comprising a plurality of pixels, wherein each pixel is divided into first and second regions; forming on the substrate an amorphous silicon layer having a first section in the first region and a second section in the second region, and a protection film in the second region, wherein the second section of the amorphous silicon layer and the protection film are in a vertical stack, the protection film is between the substrate and the second section of the amorphous silicon layer and the first section of the amorphous silicon layer is not stacked with the protection film; and annealing the first and second sections of the amorphous silicon layer by exposure to an excimer laser, to convert into first and second sections of a polysilicon layer in the first and second regions, respectively, wherein grain size of the first section of the polysilicon layer is larger than that of the second section of the polysilicon layer, as affected by the presence of the protection film in the vertical stack with the second section of the polysilicon layer. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An organic electroluminescent device, comprising:
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a substrate comprising a plurality of pixels, wherein each pixel is divided into first and second regions; and a first section of a polysilicon layer in the first region and a second section of the polysilicon in the second region, wherein the grain size of the first section of the polysilicon layer is larger than that of the second section of the polysilicon layer, and wherein the first and second sections of the polysilicon layer are formed by; forming on the substrate an amorphous silicon layer having a first section in the first region and a second section in the second region, and a protection film in the second region, wherein the second section of the amorphous silicon layer and the protection film are in a vertical stack and the protection film is between the substrate and the second section of the amorphous silicon layer; and annealing the first and second sections of the amorphous silicon layer by exposure to an excimer laser, to convert into the first and second sections of a polysilicon layer in the first and second regions, respectively, wherein the grain size of the first section of the polysilicon layer is larger than that of the second section of the polysilicon layer as influenced by the protection film. - View Dependent Claims (33, 34)
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Specification