JP2000284126A5 - - Google Patents
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- JP2000284126A5 JP2000284126A5 JP1999217547A JP21754799A JP2000284126A5 JP 2000284126 A5 JP2000284126 A5 JP 2000284126A5 JP 1999217547 A JP1999217547 A JP 1999217547A JP 21754799 A JP21754799 A JP 21754799A JP 2000284126 A5 JP2000284126 A5 JP 2000284126A5
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- JP
- Japan
- Prior art keywords
- optically anisotropic
- anisotropic layer
- wavelength
- retardation
- retardation value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 20
- 230000003287 optical Effects 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 210000002858 crystal cell Anatomy 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 8
- 238000006116 polymerization reaction Methods 0.000 claims 1
Description
(7)光学異方性層Aの遅相軸と光学異方性層Bの遅相軸との角度が50°乃至70°である(1)または(2)に記載の位相差板。
(8)波長550nmにおける光学異方性層Aのレターデーション値が250乃至300nmであり、波長550nmにおける光学異方性層Bのレターデーション値が125乃至150nmである(1)または(2)に記載の位相差板。
(9)波長550nmにおけるレターデーション値が210乃至300nmである光学異方性層Aと波長550nmにおけるレターデーション値が115乃至150nmである光学異方性層Bとを積層することにより、波長450nm、550nmおよび650nmで測定したレターデーション値/波長の値が、いずれも0.2乃至0.3の範囲内である位相差板に、さらに偏光膜が積層されている円偏光板であって、光学異方性層Aおよび光学異方性層Bの一方がポリマーフイルムからなり、他方が液晶性分子を含む層からなることを特徴とする円偏光板。
(10)波長550nmにおけるレターデーション値が210乃至300nmである光学異方性層Aと波長550nmにおけるレターデーション値が115乃至150nmである光学異方性層Bとを積層することにより、波長450nm、550nmおよび650nmで測定したレターデーション値/波長の値が、いずれも0.2乃至0.3の範囲内である位相差板に、さらに偏光膜が積層されている円偏光板であって、光学異方性層Aおよび光学異方性層Bが、いずれも液晶性分子を含む層からなることを特徴とする円偏光板。
(11)反射板、液晶セルおよび偏光膜がこの順に積層されている反射型液晶表示装置であって、さらに、波長550nmにおけるレターデーション値が210乃至300nmである光学異方性層Aと波長550nmにおけるレターデーション値が115乃至150nmである光学異方性層Bとが反射板と偏光膜との間に配置されており、光学異方性層AとBは、積層すると波長450nm、550nmおよび650nmで測定したレターデーション値/波長の値が、いずれも0.2乃至0.3の範囲内となる光学的性質を有し、光学異方性層Aおよび光学異方性層Bの一方がポリマーフイルムからなり、他方が液晶性分子を含む層からなることを特徴とする反射型液晶表示装置。
(12)反射板、液晶セルおよび偏光膜がこの順に積層されている反射型液晶表示装置であって、さらに、波長550nmにおけるレターデーション値が210乃至300nmである光学異方性層Aと波長550nmにおけるレターデーション値が115乃至150nmである光学異方性層Bとが反射板と偏光膜との間に配置されており、光学異方性層AとBは、積層すると波長450nm、550nmおよび650nmで測定したレターデーション値/波長の値が、いずれも0.2乃至0.3の範囲内となる光学的性質を有し、光学異方性層Aおよび光学異方性層Bが、いずれも液晶性分子を含む層からなることを特徴とする反射型液晶表示装置。
(7) The retardation plate according to (1) or (2), wherein the angle between the slow axis of the optically anisotropic layer A and the slow axis of the optically anisotropic layer B is 50 ° to 70 °.
(8) The retardation value of the optically anisotropic layer A at a wavelength of 550 nm is 250 to 300 nm, and the retardation value of the optically anisotropic layer B at a wavelength of 550 nm is 125 to 150 nm (1) or (2). The retardation plate described.
(9) By laminating an optically anisotropic layer A having a retardation value of 210 to 300 nm at a wavelength of 550 nm and an optically anisotropic layer B having a retardation value of 115 to 150 nm at a wavelength of 550 nm, the wavelength is 450 nm. A circular polarizing plate in which a polarizing film is further laminated on a retardation plate in which the retardation value / wavelength value measured at 550 nm and 650 nm are both in the range of 0.2 to 0.3, and is optical. A circularly polarizing plate characterized in that one of the anisotropic layer A and the optically anisotropic layer B is composed of a polymer film, and the other is composed of a layer containing a liquid crystal molecule.
(10) By laminating an optically anisotropic layer A having a retardation value of 210 to 300 nm at a wavelength of 550 nm and an optically anisotropic layer B having a retardation value of 115 to 150 nm at a wavelength of 550 nm, the wavelength is 450 nm. A circular polarizing plate in which a polarizing film is further laminated on a retardation plate in which the retardation value / wavelength value measured at 550 nm and 650 nm are both in the range of 0.2 to 0.3, and is optical. A circularly polarizing plate in which both the anisotropic layer A and the optically anisotropic layer B are composed of a layer containing a liquid crystal molecule.
(11) A reflective liquid crystal display device in which a reflecting plate, a liquid crystal cell, and a polarizing film are laminated in this order, and further, an optically anisotropic layer A having a retardation value of 210 to 300 nm at a wavelength of 550 nm and a wavelength of 550 nm. The optically anisotropic layer B having a retardation value of 115 to 150 nm is arranged between the reflecting plate and the polarizing film, and the optically anisotropic layers A and B have wavelengths of 450 nm, 550 nm and 650 nm when laminated. The retardation value / wavelength value measured in 1 has an optical property in the range of 0.2 to 0.3, and one of the optically anisotropic layer A and the optically anisotropic layer B is a polymer. A reflective liquid crystal display device comprising a film and a layer containing liquid crystal molecules on the other side.
(12) A reflective liquid crystal display device in which a reflecting plate, a liquid crystal cell, and a polarizing film are laminated in this order, and further, an optically anisotropic layer A having a retardation value of 210 to 300 nm at a wavelength of 550 nm and a wavelength of 550 nm. The optically anisotropic layer B having a retardation value of 115 to 150 nm is arranged between the reflecting plate and the polarizing film, and the optically anisotropic layers A and B have wavelengths of 450 nm, 550 nm and 650 nm when laminated. The retardation value / wavelength value measured in 1 has an optical property in the range of 0.2 to 0.3, and both the optically anisotropic layer A and the optically anisotropic layer B have optical properties. A reflective liquid crystal display device comprising a layer containing liquid crystal molecules.
Claims (12)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21754799A JP3734211B2 (en) | 1999-01-27 | 1999-07-30 | Retardation plate, circularly polarizing plate, and reflective liquid crystal display device |
US09/435,620 US6400433B1 (en) | 1998-11-06 | 1999-11-08 | Circularly polarizing plate comprising linearly polarizing membrane and quarter wave plate |
US10/119,149 US6593984B2 (en) | 1998-11-06 | 2002-04-10 | Quarter wave plate comprising two optically anisotropic layers |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1890099 | 1999-01-27 | ||
JP11-18900 | 1999-01-27 | ||
JP21754799A JP3734211B2 (en) | 1999-01-27 | 1999-07-30 | Retardation plate, circularly polarizing plate, and reflective liquid crystal display device |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2000284126A JP2000284126A (en) | 2000-10-13 |
JP2000284126A5 true JP2000284126A5 (en) | 2005-08-04 |
JP3734211B2 JP3734211B2 (en) | 2006-01-11 |
Family
ID=26355642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21754799A Expired - Lifetime JP3734211B2 (en) | 1998-11-06 | 1999-07-30 | Retardation plate, circularly polarizing plate, and reflective liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3734211B2 (en) |
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1999
- 1999-07-30 JP JP21754799A patent/JP3734211B2/en not_active Expired - Lifetime
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