Optrex Corporation

Asahi Glass Company, Limited

Noriko Suehiro

Satoshi Niiyama

Makoto Nagai

Shinya Tahara

Tomohiro Takano

On substratesof a chiral nematic liquid crystal optical element, transparent electrodesand electrical insulation layersare formed, and further resin layershaving a pencil hardness of 'B' or less are formed on the electrical insulation layers by a spin coating method so as to be in contact with a liquid crystal layer. When the surface hardness of the resin layers is to be measured, a glass substrate on which a resin layer is formed by screen-printing is prepared as a test piece, and the test piece is fitted to a pencil-scratching tester. The surface hardness is measured by scratching the test piece with two kinds of testing pencil selected from testing pencils having 17 grades of density.

Liquid crystal optical element and test method for its boundary layer

On substratesof a chiral nematic liquid crystal optical element, transparent electrodesand electrical insulation layersare formed, and further, resin layershating a pencil hardness of 'B' or less are formed on the electrical insulation layers by a spin coating method so as to be in contact with a liquid crystal layer. When the surface hardness of the resin layers is to be measured, a glass substrate on which a resin layer is formed by screen-printing is prepared as a test piece, and the test piece is fitted to a pencil-scratching tester. The surface hardness is measured by scratching the test piece with two kinds of testing pencil selected from testing pencils having 17 grades of density.

Liquid crystal optical element comprising a resin layer having a surface hardness of b or less

A driving method for a liquid crystal display device with a cholesteric liquid crystal having a memory mode of operation including a first stage of applying a first voltage to change the state of the cholesteric liquid crystal to a homeotropic state, a second stage of applying a second voltage to change the state of the cholesteric liquid crystal to a homogeneous state or a homogeneous/planar-mixed state, and a third stage of applying a third voltage to change the state of the cholesteric liquid crystal from the homogeneous state or the homogeneous/planar-mixed state to a focalconic state.

Driving method for a cholesteric liquid crystal display device having a memory mode of operation and a driving apparatus

There are provided at least two liquid crystal panelsincluding the liquid crystals developing a memory effect, the liquid crystal developing a memory effect on a side opposite to a viewer side has a selective reflection wavelength set at 615-665 nm, the liquid crystal developing a memory effect on the viewer side has a selective reflection wavelength set at 490-540 nm, and a color filter having a certain transmission property is provided between the liquid crystal developing a memory effect on the viewer side and the liquid crystal developing a memory effect on the side opposite to the viewer side.

Electronic shelf label

There are provided at least two liquid crystal panels including the liquid crystals developing a memory effect, the liquid crystal developing a memory effect on a no-viewer side has a selective reflection wavelength set at 615 nm to 665 nm, the liquid crystal developing a memory effect on a viewer side has a selective reflection wavelength set at 490 nm to 540 nm, and a color filter having a certain transmission property is provided between the liquid crystal developing a memory effect on the viewer side and the liquid crystal developing a memory effect on the no-viewer side.

Liquid crystal display element

On substrates of a chiral nematic liquid crystal optical element transparent electrodes and electrical insulation layers are formed, and further, resin layers having a pencil hardness of &ldquo;B&rdquo; or less are formed on the electrical insulation layers by a spin coating method so as to be in contact with a liquid crystal layer When the surface hardness of the resin layers is to be measured, a glass substrate on which a resin layer is formed by screen-printing is prepared as a test piece, and the test piece is fitted to a pencil-scratching tester. The surface hardness is measured by scratching the test piece with two kinds of testing pencil selected from testing pencils having 17 grades of density.

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Kanagawa, Japan

Noriko Suehiro