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Study on using a process which was combined LIGA (Lithographie Galvanoformung Abformung) with etching to manufacture an optical film of an aspherical microlens array (A-MLA), which can improve the extraction efficiency of an OLED (Organic Light-Emitting Diode). The extraction efficiency of a current OLED is not high due to its total internal reflection, and the luminance is also lower because of the...
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