Abstract: A twisted nematic liquid crystal display (TN-LCD) structure is provided, which includes a twisted nematic (TN) liquid crystal layer, a first laminated polarizing film, and a second laminated polarizing film. The first laminated polarizing film and the second laminated polarizing film are respectively disposed on a first side and a second side of the TN liquid crystal layer. By means of an angle formed between a first absorption axis of a first linear polarizing film for the first laminated polarizing film and a second absorption axis of a second linear polarizing film for the second laminated polarizing film, the LCD structure of the present invention has the efficacy of an enlarged view angle, improved contrast, and low cost.

Abstract: A method to monitor a nanocrystalline film surface structure and the thickness thereof uses the surface structure characteristics of the vapor deposition nanocrystalline thin films having the low volume fraction to make a nanocrystalline thin film become a nonhomogeneous double-layer structure comprising a dense bottom layer having high index of refraction and a surface layer having the low volume fraction. The optical module of this double-layer structure can be used to simulate the characteristics of the nanocrystalline structure. That is to say, in the thin film deposition manufacturing process, if the thin film structure satisfies the optical module of the double-layer structure, this means it has the nanocrystalline characteristic. Hence, in the manufacturing process, use the optical instruments to measure the thin film and the substrate and to calculate the optical parameters; thus a nanocrystalline film surface structure and the thickness thereof can be precisely monitored immediately.