Display device and method of manufacturing transparent substrate for display device
First Claim
1. A method for manufacturing a transparent substrate for a display device comprising:
- forming a polymer layer containing a copolymer selected from block copolymers and graft copolymers on at least one major surface of a transparent substrate;
subjecting the polymer layer to annealing treatment to phase-separate the copolymer;
removing one of the phases of the copolymer that has been phase-separated to form a mask layer having a pattern formed of the residual phase; and
transcribing the pattern of mask layer onto a surface of the transparent substrate, thereby forming a surface-roughened substrate having a large number of recessed/projected portions, projected portions of the recessed/projected portions being meet the following conditions;
(1) a mean circle-equivalent diameter ranging from 50 nm to 250 nm with the standard deviation of circle-equivalent diameter of the projected portions being within the range of 10 to 50% of the mean circle-equivalent diameter;
(2) a mean height ranging from 100 nm to 500 nm with the standard deviation of height being within the range of 10 to 50% of the mean height;
(3) a circularity coefficient ranging from 0.6 to 1; and
(4) an area ratio ranging from 20 to 75%.
1 Assignment
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Accused Products
Abstract
A display device comprises a substrate and a laminate structure formed on the substrate and comprising a plurality of layers including a display region. The laminate structure has a recessed/projected portions at least one of an outermost surface of display side and an interface between the layers. The projected portions of the recessed/projected portions have a mean circle-equivalent diameter ranging from 50 nm to 250 nm with the standard deviation of circle-equivalent diameter of the projected portions being within the range of 10 to 50% of the mean circle-equivalent diameter, and a mean height ranging from 100 nm to 500 nm with the standard deviation of height being within the range of 10 to 50% of the mean height. The projected portions have a circularity coefficient ranging from 0.6 to 1, and an area ratio ranging from 20 to 75%.
10 Citations
18 Claims
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1. A method for manufacturing a transparent substrate for a display device comprising:
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forming a polymer layer containing a copolymer selected from block copolymers and graft copolymers on at least one major surface of a transparent substrate; subjecting the polymer layer to annealing treatment to phase-separate the copolymer; removing one of the phases of the copolymer that has been phase-separated to form a mask layer having a pattern formed of the residual phase; and transcribing the pattern of mask layer onto a surface of the transparent substrate, thereby forming a surface-roughened substrate having a large number of recessed/projected portions, projected portions of the recessed/projected portions being meet the following conditions; (1) a mean circle-equivalent diameter ranging from 50 nm to 250 nm with the standard deviation of circle-equivalent diameter of the projected portions being within the range of 10 to 50% of the mean circle-equivalent diameter; (2) a mean height ranging from 100 nm to 500 nm with the standard deviation of height being within the range of 10 to 50% of the mean height; (3) a circularity coefficient ranging from 0.6 to 1; and (4) an area ratio ranging from 20 to 75%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for manufacturing a transparent substrate for a display device comprising:
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forming a polymer layer containing a copolymer selected from block copolymers and graft copolymers on a cast molding substrate; subjecting the polymer layer to annealing treatment to phase-separate the copolymer; removing one of the phases of the copolymer that has been phase-separated to form a mask layer having a pattern formed of the residual phase; and transcribing the pattern of mask layer onto a surface of the cast molding substrate, thereby obtaining a cast mold pattern having a large number of recessed/projected portions; forming a resist film on at least one of major surfaces of a transparent substrate; press-contacting the cast mold pattern onto the resist film to form a resist pattern having a large number of recessed/projected portions; and working the transparent substrate by using the resist pattern as a mask, projected portions of the recessed/projected portions being meet the following conditions; (1) a mean circle-equivalent diameter ranging from 50 nm to 250 nm with the standard deviation of circle-equivalent diameter of the projected portions being within the range of 10 to 50% of the mean circle-equivalent diameter; (2) a mean height ranging from 100 nm to 500 nm with the standard deviation of height being within the range of 10 to 50% of the mean height; (3) a circularity coefficient ranging from 0.6 to 1; and (4) an area ratio ranging from 20 to 75%. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification