Warabi, Japan
Warabi, Japan

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Patent
Lintec Corporation and Tohoku University | Date: 2016-03-09

An optical-diffusion film for display which, particularly when applied to a display device using a collimated backlight as a backlight for the display panel, can efficiently diffuse and emit a highly directional light emitted from the collimated backlight toward the front of the display device as image display light, without allowing straight transmission of the highly directional light, and a display device using the optical-diffusion film for display are provided. Disclosed is a single-layered optical-diffusion film having a columnar structure in which plural pillar-shaped objects having a relatively high refractive index are arranged to stand close together in a film thickness direction in a region having a relatively low refractive index, in which the film thickness of the optical-diffusion film has a value within the range of 60 to 700 m, and the haze value obtainable in the case in which light is made incident in the normal line direction of the film plane has a value of 80% or more.


Patent
Lintec Corporation and Kyushu Institute of Technology | Date: 2016-01-06

The invention provides a thermoelectric conversion material having a low thermal conductivity and an improved figure of merit and a production method for the material, and also provides a thermoelectric conversion module. The thermoelectric conversion material has, on a porous substrate having microscopic pores, a thermoelectric semiconductor layer formed of a thermoelectric semiconductor material, wherein the porous substrate has a polymer layer (B) on a plastic film (A) and the microscopic pores are formed in the polymer layer (B) and in a part of the plastic film (A). The production method for the thermoelectric conversion material comprises a substrate formation step of forming a porous substrate including a step 1, a step 2 and a step 3, and comprises a film formation step of forming a thermoelectric semiconductor layer through film formation of a thermoelectric semiconductor material on the porous substrate. The thermoelectric conversion module uses the thermoelectric conversion material.


The present invention is a sheet-like sealing material comprising one sealing resin layer, or two or more sealing resin layers, the sheet-like sealing material having a water vapor transmission rate at a temperature of 40C and a relative humidity of 90% of 20 g/(m^(2)day) or less when the sheet-like sealing material has a thickness of 50 m, having a b* value in a CIE L*a*b* color system defined by JIS Z 8729-1994 of -2 to 2%, having a light transmittance at a wavelength of 370 nm of 1% or less, and having a light transmittance at a wavelength of 420 nm of 85% or more; and a sealing sheet comprising the sheet-like sealing material that comprises one sealing resin layer, or two or more sealing resin layers, and a gas barrier layer; and an electronic device that is sealed with the sheet-like sealing material or the sealing sheet.


Patent
Lintec Corporation | Date: 2016-04-13

[Problems] There is provided a pressure sensitive adhesive tape which can reduce the amount of migrated components from the pressure sensitive adhesive tape to an adherend while appropriately ensuring the attaching property to the adherend. [Solution] A pressure sensitive adhesive tape comprising a base material and a pressure sensitive adhesive layer provided on one surface of the base material, wherein the pressure sensitive adhesive layer is formed of a pressure sensitive adhesive composition that contains a block copolymer of an acrylic-based monomer as the base polymer, wherein the total amount of an unreacted monomer raw material contained in the pressure sensitive adhesive layer is 100 ppm or less.


Patent
Lintec Corporation | Date: 2016-03-23

An object of the present invention is to provide a laser dicing sheet which is capable of preventing cutting of dicing sheet by laser beam, damage of the chuck table and fusion of the dicing sheet to the chuck table. A laser dicing sheet according to the present invention comprising a base material comprising a polyurethane acrylate; and an adhesive layer formed on one surface thereof.


Provided are an adhesive sheet for a tire, which can finely conform to spews or concavities and convexities on the surface and can prevent lifting and peeling of the adhesive sheet, regardless of whether the adhesion is achieved by hand or by an automatic label applicator; a method of producing an adhesive sheet for a tire; and a method of using an adhesive sheet for a tire. Disclosed is an adhesive sheet for a tire, the adhesive sheet including a substrate and an adhesive layer, in which the Gurley bending resistance of the substrate in the machine direction according to JIS L 1085 (1998) has a value within the range of 0.10 to 0.40 mN, and the Gurley bending resistance in the cross direction has a value within the range of 0.10 to 0.50 mN.


Patent
LINTEC Corporation | Date: 2016-02-03

A protective film-forming composite sheet 10 comprises a pressure sensitive adhesive sheet 16 in which a pressure sensitive adhesive layer 12 is provided on a base material 11, a protective film-forming film 13, and a release film 14. When (mN/25 mm) represents the maximum peel force between the protective film-forming film 13 and the release film 14; (mN/25 mm) represents the minimum peel force between the pressure sensitive adhesive sheet 16 and the protective film-forming film 13; and (mN/25 mm) represents the maximum peel force between the pressure sensitive adhesive sheet 16 and the protective film-forming film 13, the following relationships (1) to (3) hold for , , and :


Patent
Lintec Corporation | Date: 2016-09-28

A base film is provided which can suppress the occurrence of cutting fragments in the dicing step and is excellent in the expandability and recoverability. The base film (2) includes an expandable layer (B) laminated on a cutting-fragment suppression layer (A) and having a laminate structure of a plurality of resin-based sublayers. The resin-based sublayer (B1) disposed nearest to the cutting-fragment suppression layer (A) has a stress-relaxation rate (R1) after 5 minutes of 10%-stretching. The resin-based sublayer (B2) other than the resin-based sublayer (B1) disposed nearest to the cutting-fragment suppression layer (A) has a stress-relaxation rate (R2) after 5 minutes of 10%-stretching. The stress-relaxation rate R1 and the stress-relaxation rate R2 satisfy the conditions represented by Expressions (i) to (iii) below. The cutting-fragment suppression layer (A) contains a ring-containing resin (a1) that is a thermoplastic resin having at least one type of an aromatic series-based ring and an aliphatic series-based ring and an acyclic olefin-based resin (a2) that is an olefin-based thermoplastic resin other than the ring-containing resin (a1).


An electrically peelable pressure sensitive adhesive sheet has a pressure sensitive adhesive layer formed of an electrically peelable pressure sensitive adhesive composition comprising an acrylic copolymer (A) comprising 1 to 99 mass% of a constituent unit (a1) derived from a compound represented by the following general formula (a1), and a surfactant (B). The electrically peelable pressure sensitive adhesive sheet has high adhesion before voltage application, but the adhesion can be effectively decreased by voltage application for a short time.^(1) represents a hydrogen atom or a methyl group, R^(2) represents an alkylene group having 1 to 5 carbon atoms that is unsubstituted or has a substituent, and R^(3) represents an alkyl group having 1 to 8 carbon atoms that is unsubstituted or has a substituent; and a value of n is an integer of 1 or more.


The present invention is : a curable composition comprising a component (A) and a component (B) in a mass ratio (component (A):component (B)) of 100:0.1 to 100:50; a cured product obtained by curing the curable composition; and a method for using the curable composition as an optical device-securing adhesive or an optical device sealing material. The component (A) is a silane compound polymer that is represented by a formula (a-1)(where in the formula: R^(1) is a group selected from an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, Z is a hydroxyl group, an alkoxy group having 1 to 10 carbon atoms, or a halogen atom, m is a positive integer, and n and o are independently 0 or a positive integer, provided that a plurality of R^(1) are either identical or different, and a plurality of Z are either identical or different.), and the component (B) is a silane coupling agent that comprises a sulfur atom-containing functional group in its molecule.(R^(1)SiO_(3/2))_(m)(R^(1)SiZO_(2/2))_(n)(R^(1)SiZ_(2)O_(1/2))_(o) (a-1)

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