Nitto-denko Corporation

Other

Hidehiko Andou

Hideo Sugawara

Tomonori Noguchi

Mari Tanabe

Hidetoshi Yoshitake

Seiji Umemoto

Tomotake Nashiki

Tadayuki Kameyama

Kazuhito Okumura

Kiichi Shimodaira

A transparent conductive laminate includes a coating film including a first transparent resin film and a coating layer or layers provided on one or both sides of the first transparent resin film; a transparent conductive film including a second transparent resin film and a transparent conductive layer provided on one side of the second transparent resin film; and a pressure-sensitive adhesive layer interposed between the coating film and the transparent conductive film, wherein the coating layer of the coating film is laminated with the pressure-sensitive adhesive layer to a side of the transparent conductive film where the transparent conductive layer is not provided, the pressure-sensitive adhesive layer has a storage elastic modulus of 80,000 Pa or less at 120&#xb0; C., and the adhesive strength between the pressure-sensitive adhesive layer and the coating layer is from 5 N/25 mm to 20 N/25 mm.

Transparent conductive laminate and touch panel

A method of manufacturing a transparent conductive film has the steps of: preparing a laminated body in which a transparent conductive layer that is not patterned is formed on a flexible transparent base, removing a part of the transparent conductive layer to form the pattern forming part having the transparent conductive layer on the flexible transparent base and the pattern opening part not having the transparent conductive layer on the flexible transparent base, and heating the laminated body in which the transparent conductive layer is patterned. The absolute value of the difference H&#x2212;Hof the dimensional change rate Hof the pattern forming part and the dimensional change rate Hof the pattern opening part in the heat treatment step is preferably less than 0.03%.

Method of manufacturing transparent conductive film

A method of manufacturing a transparent conductive film has the steps of: preparing a laminated body in which a transparent conductive layer that is not patterned is formed on a flexible transparent base, removing a part of the transparent conductive layer to form the pattern forming part having the transparent conductive layer on the flexible transparent base and the pattern opening part not having the transparent conductive layer on the flexible transparent base, and heating the laminated body in which the transparent conductive layer is patterned. The absolute value of the difference H-Hof the dimensional change rate Hof the pattern forming part and the dimensional change rate Hof the pattern opening part in the heat treatment step is preferably less than 0.03%.

A transparent electrically-conductive film of the present invention comprises a transparent film substrate, a hard coat layer formed on one side of the transparent film substrate, a SiOlayer with a thickness of 10 nm to 300 nm that is formed on the hard coat layer by a dry process, and a transparent electrically-conductive thin layer with a thickness of 20 nm to 35 nm that is formed on another side of the transparent film substrate. The transparent electrically-conductive film has good resistance to moisture and heat and high durability against pen-based input and can be prevented from cracking during a punching process and also prevented from waving or curling even in a high-temperature, high-humidity environment.

Transparent electrically-conductive film

A process for producing a transparent conductive laminate having a completely crystallized, transparent conductive layer on a substrate comprising an organic polymer molding is provided. The transparent conductive layer is excellent in transparency and wet heat confidence, is not excessively low in specific resistivity, and has no variation on optical properties such as retardation characteristic. The transparent conductive laminate is obtained by sputter-film forming a transparent conductive layer on a substrate comprising an organic polymer molding under conditions of a substrate temperature of 80-150&#xb0; C. and a degree of vacuum of 8&#xd7;10Pa or lower to form an amorphous transparent conductive layer comprising an In.Sn composite oxide having an amount of Sn atom of 1-6 % by weight based on the total weight of In atom and Sn atom and having a film thickness of 15-30 nm, a Hall mobility of 15-28 cmV&#xb7;S, and a carrier density of 2&#xd7;10/cmto 5&#xd7;10/cm, and heat treating the layer at a temperature lower than 120&#xb0; C., to convert it into a completely crystallized transparent conductive layer having a Hall mobility of 30-45 cm/V&#xb7;S and a carrier density of 2&#xd7;10/cmto 7&#xd7;10/cm.

Process for producing transparent conductive laminate

A touch type liquid-crystal display device has a liquid-crystal display panel having flexibility, a touch panel provided to adhere closely to a back side, opposite to a visual side, of the liquid-crystal display panel, and electrodes disposed to be opposite to each other through a gap. The electrodes are capable of coming into partial contact with each other by a pressing force to thereby detect an input position.

Touch type liquid-crystal display device and input detecting method

A transparent conductive laminated body comprising a transparent dielectric substance thin film having two layers and furthermore a transparent conductive thin film being formed on one face of a transparent film substrate with thickness of 2 to 120 &mgr;m, and a transparent substrate being adhered on another face of the film substrate through a transparent pressure sensitive adhesive layer, wherein a relationship of n3<n1<&equals;n2 <n4 is satisfied where a light index of refraction of the film substrate is defined as n1, a light indexes of refraction of the two layers of the dielectric substance thin films are defined as n2 and n3 from the film substrate side respectively, and a light index of refraction of the conductive thin film is defined as n4 is excellent in transparency and scratch-proof property of the conductive thin film, and, moreover, excellent also in flexibility. A touch panel using the transparent conductive laminated body concerned has an improved dotting property.

Transparent conductive laminated body and touch panel

A film for protecting a display surface of a liquid crystal display is provided, which contains a polymer film having a coefficient of bending stress k as expressed by the formula: k&equals;Eh , wherein E is a tensile elastic modulus (N/mm ) in a machine direction and h is a thickness (mm), of not less than 0.01 (N&middot;mm), and which shows an amount of moisture permeation at 35&deg; C., 80% RH (relative humidity) for 72 hours of not less than 100 g/m &middot;72 hr. According to the present invention, the protection film can be applied to the display surface of a liquid crystal module with superior workability during assembling. The film prevents occurrence of changes in optical hue (color shading) on the display surface in the state of actual use upon peeling off of the protection film after distribution process.

Surface protection film for liquid crystal display, liquid crystal display protected with the surface protection film and method of protecting liquid crystal display with the surface protection film

Growing community of inventors

Ibaraki, Japan

Hidehiko Andou