Reflective plate, method of making same, and reflective type...

Optical: systems and elements – Mirror – Plural mirrors or reflecting surfaces

Reexamination Certificate

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C359S575000, C349S113000

Reexamination Certificate

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06926415

ABSTRACT:
A metal die having a reverse pattern of a irregular surface in which a height of a convex increases from the center toward the outer periphery is pressed onto a surface of a molding resin on a substrate. A total volume of convexes protruding from a cutting plane and a total volume of concaves depressed below the cutting plane coincide with each other over all of the metal die as a whole, so that it is possible to form the irregular surface on a reflective plane with good precision. A reflective film such as an aluminum film is provided on a surface of an uneven layer formed in such a manner, thereby obtaining a reflective plate having high light-collecting performance in a direction toward the center. As a result, it is possible to provide a reflective plate capable of collecting reflected light in a specified direction and of being formed with good precision by embossing, a method of making same, and a reflective type liquid crystal display having the reflective plate.

REFERENCES:
patent: 3806232 (1974-04-01), Gray
patent: 4696554 (1987-09-01), Seawright
patent: 5285314 (1994-02-01), Futhey
patent: 5601957 (1997-02-01), Mizutani et al.
patent: 6473145 (2002-10-01), Shim et al.
patent: 6847425 (2005-01-01), Tanada et al.
patent: 6856366 (2005-02-01), Matsushita et al.

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