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US 7,022,384 B2Granted
Reflective film, reflection type liquid crystal display, and sputtering target for forming the reflective film
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsHideo Fujii, Junichi Nakai, Takashi Onishi, Katsutoshi Takagi
Life of this patent
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Abstract
A reflective film used as a reflective electrode or a reflector, comprising an Ag-based alloy containing rare earth metals. The reflective film has high reflectivity and high durability.
Claims22
A reflective film comprising a Ag-based alloy which comprises:
- Au in an amount of 0.1 atom % to 1.5 atom % and
- 0.1 atom % to 2.0 atom % of a rare earth metal comprising Nd, Y, or both Nd and Y;
- wherein said reflective film is capable of functioning as a reflective electrode or a reflector in a reflection type liquid crystal display.
A reflective film comprising a Ag-based alloy which comprises
- Cu in an amount of 0.1 atom % to 2.0 atom % and
- 0.1 atom % to 2.0 atom % of a rare earth metal comprising Nd, Y, or both Nd and Y;
- wherein said reflective film is capable of functioning as a reflective electrode or a reflector in a reflection type liquid crystal display.
Dependencies are inferred from the claim text.