摘要:
An optical film of the present invention comprises a polyimide-based polymer represented by the following general formula (V). The optical film of the present invention exhibits an optical property such that wavelength dispersion of retardation scarcely changes ranging from the short wavelength side to the long wavelength side.Typically, the optical film of the present invention may be used as a retardation film of a liquid crystal display device.
摘要:
There is provided an acidic zirconia sol having compatibility of particle properties and binding properties, and a production method of the same. The acidic zirconia sol includes zirconia particles (a) having a particle diameter ranging from 20 to 300 nm in a content of 90 to 50% by mass, based on the mass of all zirconia particles, and zirconia particles (b) having a particle diameter of less than 20 nm in a content of 10 to 50% by mass, based on the mass of all zirconia particles.
摘要:
A liquid crystal panel of the present invention includes at least a liquid crystal cell, a first polarizer disposed on one side of the liquid crystal cell, a second polarizer disposed on the other side of the liquid crystal cell and a retardation film (A) disposed between the liquid crystal cell and the first polarizer, wherein the retardation film (A) contains a thermoplastic polymer having at least a substituent (a) represented by the following formula (I) and its in-plane retardation value (Re[750]) at a wavelength of 750 nm is larger than its retardation value (Re[550]) at a wavelength of 550 nm. The liquid crystal panel has such an effect that it reduces coloring of characters or images and a color shift even if a screen is viewed from any direction at an angle range of 360°.
摘要:
There is provided a method for stably producing metal oxide solid solution particle at low temperature, wherein an alkaline zirconia sol is used as a raw material which is mixed with a metal compound, and then dried and fired. Specifically, there is disclosed a method for producing metal oxide particle (A3) such as zirconia particle in which metal oxides are solid-solubilized, comprising: a step (I) for obtaining metal oxide (A2) sol such as zirconia sol containing a precursor of a metal oxide by mixing an alkaline zirconia (A1) sol which is obtained by a method including a step (i) for heating a zirconium salt (B2) at 60-110° C. in an aqueous medium containing a carbonate of quaternary ammonium and a step (ii) for performing a hydrothermal treatment at 110-250° C., with a compound (B1) containing an element selected from a group consisting of the group II and group III elements of the periodic table; and a step (II) for drying the thus-obtained sol and then firing a resultant substance at a temperature of 500-1200° C.
摘要:
A liquid crystal panel of the present invention includes at least a liquid crystal cell, a first polarizer disposed on one side of the liquid crystal cell, a second polarizer disposed on the other side of the liquid crystal cell and a retardation film (A) disposed between the liquid crystal cell and the first polarizer, wherein the retardation film (A) contains a thermoplastic polymer having at least a substituent (a) represented by the following formula (I) and its in-plane retardation value (Re[750]) at a wavelength of 750 nm is larger than its retardation value (Re[550]) at a wavelength of 550 nm. The liquid crystal panel has such an effect that it reduces coloring of characters or images and a color shift even if a screen is viewed from any direction at an angle range of 360°.
摘要:
[Problems to be Solved] To provide a production method of an alkaline zirconia having compatibility of particle properties and binding properties.[Means to Solve the Problems] A production method of an alkaline zirconia sol including: a process (I) in which an alkaline zirconia sol (A) is mixed with a basic zirconium carbonate salt (B1), the alkaline zirconia sol (A) being obtained by: a sub-process (i) in which a zirconium salt (B2) is heated at 60 to 110° C. in an aqueous medium containing a carbonate salt of quaternary ammonium; and a sub-process (ii) in which a hydrothermal treatment is performed at 110 to 250° C. following the sub-process (i). More specifically, a production method of an alkaline zirconia sol including: a process (I) in which an alkaline zirconia sol (A) and a basic zirconium carbonate salt (B1) are mixed in a mass ratio (Bs/As) ranging from 0.05 to 4.0 of a mass of a solid content (Bs) of the basic zirconium carbonate salt (B1) which is converted into an amount of ZrO2 to a mass of a solid content (As) of the alkaline zirconia sol (A) which is converted into an amount of ZrO2; and a process (II) in which the mixture obtained in the process (I) is aged at 20 to 100° C.
摘要:
There is provided a liquid crystal panel, in which a color shift in an oblique direction is small even when observed from any azimuth angle of 0° to 360°, and the viewing angle in the horizontal direction is wide. A liquid crystal panel according to the present invention includes: a liquid crystal cell; a first polarizer placed on one side of the liquid crystal cell; a second polarizer placed on the other side of the liquid crystal cell; and a first optical compensation layer and a second optical compensation layer placed between the first polarizer and the second polarizer, wherein: the first optical compensation layer is placed between the first polarizer and the liquid crystal cell; a slow axis direction of the first optical compensation layer is substantially perpendicular to an absorption axis direction of the first polarizer; the first optical compensation layer has a refractive index profile of nx>ny≧nz; the first optical compensation layer includes a retardation film (A) which contains a polyvinyl acetal-based resin and whose in-plane retardation value (Re[750]) at a wavelength of 750 nm is larger than an in-plane retardation value (Re[550]) at a wavelength of 550 nm; the second optical compensation layer is placed between the first optical compensation layer and the second polarizer; and the second optical compensation layer has a refractive index profile of nx=ny>nz.
摘要:
A stable silica sol having an SiO2 concentration of 1 to 50% by weight and containing liquid-medium dispersed moniliform colloidal silica particles each having 3 or more as a ratio of D1/D2 of a particle diameter (D1 nm) measured by a dynamic light scattering method to a mean particle diameter (a particle diameter measured by a nitrogen absorption method: D2 nm) where D1 is 50 to 500 nm, and which are comprised by spherical colloidal silica particles having a mean particle diameter of 10 to 80 nm and metal oxide-containing silica bonding these spherical-colloidal silica particles, and in which the spherical colloidal silica particles link in rows in only one plane, process for producing such and a coating composition for ink receiving layers containing such a silica sol and an ink jet recording medium.
摘要:
The retardation film of the present invention contains a thermoplastic polymer having at least a side chain component (A) oriented in a direction substantially orthogonal to a slow axis, and the absorption edge wavelength (λcut-off) of the side chain component (A) is 330 nm or more, and an in-plane retardation value (Re[450]) at a wavelength of 450 nm is smaller than that (Re[650]) at a wavelength of 650 nm. In the above-mentioned retardation film, the difference (ΔRe650-450=Re[650]−Re[450]) between the in-plane retardation value (Re[650]) at a wavelength of 650 nm and the in-plane retardation value (Re[450]) at a wavelength of 450 nm is preferably 10 nm or more. The retardation film of the present invention exhibits optical characteristics in which the in-plane birefringence is large and the difference between a retardation value on the short wavelength side and a retardation value on the long wavelength side is large.
摘要:
[Object]The present invention provides a liquid crystal panel with which a display with extremely small change in color depending on a viewing direction can be realized, and a liquid crystal display including the same.[Solution to Problem]The liquid crystal panel includes: a first polarizer 30; a second polarizer 50; a first optical compensation layer 60; a second optical compensation layer 70; and a liquid crystal cell 40. The first polarizer 30 is arranged on one surface of the liquid crystal cell 40. The second polarizer 50 is arranged on the other surface of the liquid crystal cell 40. The first optical compensation layer 60 is arranged between the liquid crystal cell 40 and the first polarizer 30. The second optical compensation layer 70 is arranged between the liquid crystal cell 40 and the second polarizer 50. The first optical compensation layer 60 satisfies the following mathematical formulae (1) and (2). The second optical compensation layer satisfies the following mathematical formulae (3) and (4). nx>ny≧nz (1) (Re[450]/Re[550]) nz (3) (Rth[450]/Rth[550])≧1.10 (4)