Filling-bonding material, protective sheet-equipped filling-bonding material, laminated body, optical device, and protective panel for optical device
AssigneeSekisui Chemical Co., Ltd.
InventorsJuichi Fukatani, Takazumi Okabayashi, Kozo Nakamura, Atsushi Wada, Hiroyuki Nakatani
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Abstract
The present invention aims to provide a filling-bonding material that is suitably used to fill a space between parts, while bonding the parts, in optical devices in various shapes not limited to flat shapes. The present invention also aims to provide a protective sheet-equipped filling-bonding material, a laminate, an optical device, and a protective panel for an optical device each including the filling-bonding material. Provided is a filling-bonding material having a shape with an uneven thickness.
Claims22
A self-supporting filling-bonding material having a shape with an uneven thickness,
- wherein a width of the filling-bonding material has a value of 50 mm or greater,
- wherein the uneven thickness being defined between a curved surface and an opposing surface, wherein the curved surface has a principal curvature of 1/1000 mm−1 or more and has a positive or negative Gaussian curvature, and
- wherein the filling-bonding material has a light-transmitting portion, wherein the light transmitting portion has an average residual phase difference (Rave) of 20 nm/mm or less and/or an in-plane standard deviation (s) of a phase difference of 10 nm or less.
A protective panel for an optical device comprising:
- a first panel;
- a second panel;
- and
- a self-supporting filling-bonding material having a shape with an uneven thickness, the uneven thickness being defined between a curved surface and an opposing surface, wherein the curved surface has a principal curvature of 1/5000 mm−1 or more,
- at least one of the first panel or the second panel having a curved surface,
- the first panel and the second panel being directly bonded to each other with the filling-bonding material,
- wherein the filling-bonding material has a light-transmitting portion, wherein the light transmitting portion has an average residual phase difference (Rave) of 20 nm/mm or less and/or an in-plane standard deviation (s) of a phase difference of 10 nm or less.
Dependencies are inferred from the claim text.