Nitto-denko Corporation

Kobayashi Pharmaceutical Co., Ltd.

Yuji Saiki

Daisuke Ogomi

Masahiro Yaegashi

Kota Nakai

Yuki Nakano

Tomokazu Yoshida

Minoru Miyatake

Hiroyuki Yoshimi

Youichirou Sugino

Seiichi Kusumoto

Takafumi Sakuramoto

Takashi Shouda

Eiji Hamamoto

Senri Kondou

Provided is an interdental cleaning tool that can be smoothly inserted between back teeth. An interdental cleaning tool according to the present invention includes: a cleaning tool body that is made of a synthetic resin, and includes a grip portion that is capable of being gripped with fingers of a user and a shaft portion that extends in one direction from the grip portion; and a cleaning portion configured to clean between teeth, covering a leading end of the shaft portion, and made of an elastomer, wherein (angle b)/(angle a) is 0.82 or more, where the angle a is a rotational angle (degrees) when a torque value A is measured, the torque value A being a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 6 mm away from a leading end of the cleaning portion, and the angle b is a rotational angle (degrees) when a torque value B is measured, the torque value B being a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 10 mm away from the leading end of the cleaning portion.

Interdental cleaning tool

Provided is an interdental cleaning tool that is not too soft and is unlikely to break during use. An interdental cleaning tool according to the present invention includes: a cleaning tool body that is made of a synthetic resin, and includes a grip portion that is capable of being gripped with fingers of a user and a shaft portion that extends in one direction from the grip portion; and a cleaning portion configured to clean between teeth, covering a leading end of the shaft portion, and made of an elastomer, wherein Y>−0.07+3.3 is satisfied, where Y is a maximum torque value (N·cm) when the grip portion is rotated at a rotational speed of 10 rpm about a position located 15 mm away from a leading end of the cleaning portion, and X is a rotational angle (degrees) when the maximum torque value is measured.

A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer according to an embodiment includes a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.

Polarizer having non-polarization portions, a long polarizing plate and image display device comprising the polarizer

A polarizer that can realize the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizer including a resin film containing a dichroic substance, wherein the polarizer has a low dichroic substance concentration portion whose content of the dichroic substance is relatively low in the resin film. In the polarizer, the low dichroic substance concentration portion has a content of an alkali metal and/or an alkaline earth metal of 3.6 wt % or less.

Polarizer, polarizing plate, and image display apparatus

A polarizer that can realize the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus. A polarizerincluding a resin film containing a dichromatic substance, wherein the polarizer has a low dichromatic substance concentration portion whose content of the dichromatic substance is relatively low in the resin film. The low dichromatic substance concentration portionis brought into contact with an acidic solution. The low dichromatic substance concentration portion corresponds to a camera portion of an image display apparatus on which the polarizer is mounted.

A long polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizer including a long resin film containing a dichromatic substance, the polarizer having non-polarization portions arranged in a lengthwise direction and/or a widthwise direction at predetermined intervals, the non-polarization portions including decolored portions formed through partial decoloring.

A long polarizing film laminate capable of producing a polarizer that can achieve the multi-functionalization and high-functionalization of an electronic device, such as an image display apparatus, that shows no variation in quality when provided as a final product, and that is excellent in yield in its production. A polarizing film laminate according to an embodiment of the present invention includes: a long polarizer; and a surface protective film arranged on one surface side of the polarizer. The polarizing film laminate has, on the one surface side, exposed portions where the polarizer is exposed. The exposed portions are arranged in a lengthwise direction and/or a widthwise direction of the polarizer at predetermined intervals.

Polarizing film laminate comprising a long polarizing having exposed portion where a polarizer is exposed

A polarizing plate excellent in polarization performance in all wavebands from a short wavelength region to a long wavelength region and a liquid crystal display using such a polarizing plate. The polarizing plate including a polarizer has a portion having a polarization degree of 99% or more at each wavelength of light for wavelengths of 420 to 550 nm and a portion having a polarization degree of 99% or more at each wavelength of light for wavelengths of 550 to 700 nm.

Polarizing plate and liquid crystal display using the same

A wide viewing angle polarizing plate has a laminate of a birefringent film having an in-plane average phase difference of from 50 nm to 200 nm made of a transparent resin film having microscopic regions dispersed therein and a polarizing plate. The birefringent film comprises a transparent resin film having microscopic regions dispersed therein and satisfies the relationships &Dgr;n,&lE;0.03 and &Dgr;n,>&Dgr;n,supposing that the direction of the axis along which linearly polarized light exhibits the maximum transmission is &Dgr;n,direction, the difference in refractive index between microscopic regions in &Dgr;n,direction and other portions is &Dgr;n,, the direction perpendicular to &Dgr;n,direction is &Dgr;n,direction and the difference in refractive index between microscopic regions in &Dgr;n,direction and other portions is &Dgr;n,, and &Dgr;n,direction and the retardation axis of said birefringent film and the transmission axis of said polarizing plate are parallel to each other and a liquid crystal display comprising same.

Growing community of inventors

Ibaraki, Japan

Yuji Saiki