Title:
高性能のK型偏光子
Document Type and Number:
Japanese Patent JP4269939
Kind Code:
B2
Abstract:
An enhanced K-type polarizer includes a molecularly oriented sheet of polyvinylalcohol/polyvinylene block copolymer material having polyvinylene blocks formed by molecular dehydration of a sheet of polyvinylalcohol wherein the molecularly oriented sheet comprises light-polarizing molecules of polyvinylalcohol/polyvinylene block copolymer material varying in length, n, of conjugated repeating vinylene unit of the polyvinylene block, wherein an absorption concentration of each of the polyvinylene blocks in the range of n=19 to 25 is not less than approximately 65% of the absorption concentration of any of the polyvinylene blocks in the range of n=14 or 15, wherein the absorption concentration is determined by absorption of wavelengths from about 200 nm to about 700 nm by the polyvinylene blocks, and wherein the molecularly oriented sheet exhibits a photopic dichroic ratio, RD, of at least approximately 75.
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Inventors:
Frog, John Jay.
Barrick, Jason W.
Nagarker, Pranya V.
Vogel, Kim M.
Sahouani, Hassan
Barrick, Jason W.
Nagarker, Pranya V.
Vogel, Kim M.
Sahouani, Hassan
Application Number:
JP2003584156A
Publication Date:
May 27, 2009
Filing Date:
March 12, 2003
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G02B5/30; B32B7/00; B32B27/08; C08F8/00; C08F16/06; C08J7/12; C08J7/14; C08L29/00
Domestic Patent References:
| JP10508123A | ||||
| JP11248937A | ||||
| JP59166905A | ||||
| JP2005522726A | ||||
| JP2005517974A | ||||
| JP2005527847A |
Foreign References:
| US2445555 |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka
Osamu Suzawa
Kazuhiko Miyasaka
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