Nitto-denko Corporation

Nitto Denko Corportation

Kazuo Kitada

Tomokazu Yura

Satoru Koshio

Takuya Nakazono

Fumihito Shimanoe

Kouji Kimura

Takaichi Amano

Takayoshi Yamano

Kanji Nishida

Atsushi Hino

Shouji Shibata

Takaaki Ishii

Yusuke Toyama

Satoshi Hashimoto

Yu Morimoto

Akihiro Nagura

Naoyuki Matsuo

Tomonori Noguchi

Hiromichi Ohashi

Tadashi Yokouchi

Yoshihiro Kameda

Kentarou Takeda

Satoshi Hirata

Youichirou Sugino

Naoki Tomoguchi

Kanto Kobayashi

Masahiro Takigawa

Minoru Maeda

Yoshinori Ikeda

Tamotsu Oda

Teruaki Osawa

Satoshi Koshio

A method for continuously manufacturing an optical display device comprises feeding a continuous web of optical film laminate including a continuous web of releasable film that includes a conductive layer and an optical film sheet that includes a conductive layer formed on the releasable film, bending the releasable film at a peeling body located in close vicinity of a lamination position, collecting the releasable film and thereby peeling the optical film sheet from the optical film laminate, sending the optical film sheet to the lamination position, and laminating the optical film sheet with a panel member which is conveyed to the lamination position by a panel conveying channel which makes at least a double-storied structure with a portion of a collecting channel where the releasable film is collected, attenuating static electrification generated on the optical film sheet, and continuously laminating the optical film sheet with the panel member.

Optical film laminate used for continuous lamination to panel component

A continuous web of optical film laminate comprising, an optical film comprising a first substrate and an adhesive layer on the first substrate, a releasable film comprising a second substrate and a releasably treated layer on the second substrate, the releasably treated layer being in contact with the adhesive layer, a first conductive layer between the first substrate and the adhesive layer, and a second conductive layer between the second substrate and the releasably treated layer. The first conductive layer and the second conductive layer comprise a static electrification prevention material, such that the optical film with the first conductive layer, and the releasable film with the second conductive layer, both have a sheet resistance of 10&#x3a9;/sq or less.

The present invention provides a manufacturing apparatus and manufacturing method for realizing lamination with high accuracy responding to increase in speed and growth in size in an optical display unit manufacturing apparatus. The present invention is a manufacturing apparatus and manufacturing method in which, in the optical display unit manufacturing apparatus, a holding device which reciprocates between a peeling position and an upstream side predetermined position of the peeling position is deployed, the holding device holds the optical film laminate in a width-wise direction including both sides, and moves for a fixed distance, and at the peeling position, sends a front end of the optical film sheet peeled with the adhesive layer from the carrier film to a downstream side predetermined position of the peeling position to release the optical film laminate when the holding device reaches the lower side predetermined position.

Manufacturing apparatus and manufacturing method of optical display unit

To provide a continuous web of optical film laminate provided with static electrification prevention function which allows for promptly attenuating static charge of optical film sheet and carrier film electrified by peeling action in RTP lamination method and apparatus. The problem has been solved with a continuous web of optical film laminate for using in RTP lamination method and apparatus, in which static electrification prevention function is provided to optical film sheets and a carrier film configuring the continuous web of optical film laminate, such that sheet resistance of each of the optical film sheets and the carrier film is 10&#x3a9;/sq or less so as to promptly attenuate static charge of the carrier film to be collected, which is statically electrified by peeling action, and the optical film sheets to be laminated to panel components, which are also statically electrified by peeling action.

An impact-absorbing pressure-sensitive adhesive sheet according to an embodiment of the present invention includes an impact-absorbing pressure-sensitive adhesive layer including an impact-absorbing layer. A side surface of the impact-absorbing pressure-sensitive adhesive layer includes a tapered surface; and the tapered surface has a taper angle of 65&#xb0; or more.

Impact-absorbing pressure-sensitive adhesive sheet and method of producing the same

A method for manufacturing an optical display device comprising: after completing lamination of a preceding optical film sheet to one of opposite surfaces of a preceding panel component at the predetermined laminating position, unwinding the carrier film in a state where another surface thereof folded to inside at a tip-end configuring a head portion of a peeling member and the carrier film is passed around the peeling member, and backwardly feeding a leading end of the optical film sheet supported on the carrier film to a predetermined feeding position provided at upstream of the tip-end of the peeling member.

Method and apparatus for manufacturing optical display device

A method and an apparatus for manufacturing an optical display device by sequentially peeling a plurality of optical film sheets continuously supported on a long web of a carrier film and laminating the plurality of optical film sheets to a plurality of panel components are provided.

An information storage/readout device for use in a system for continuously manufacturing liquid-crystal display elements comprises an information storage medium which stores therein slitting position information created based on the position of a defect detected by an inspection of a continuous polarizing composite film included in a continuous optical film laminate including a continuous polarizing composite film formed with an adhesive layer and a continuous carrier film releasably laminated on the adhesive layer, to indicate defective-polarizing-sheet slitting positions defining a defective or defect-containing polarizing sheet, and normal-polarizing-sheet slitting positions defining a normal or defect-free polarizing sheet, in the continuous inspected optical film laminate, and a roll of the continuous inspected optical film laminate which is provided with an identification indicia. In continuous manufacturing of liquid-crystal display elements, the present invention can dramatically enhance product accuracy and manufacturing speed and drastically improve product yield.

Information storage/readout device for use in continuously manufacturing system for liquid-crystal display elements, and method and system for producing the same

The invention is a method for continuously manufacturing an inspected liquid crystal display panel, includes: a liquid crystal cell feeding step including feeding a liquid crystal cell having a first substrate and a second substrate; a first polarizing plate providing step including providing a first polarizing plate from a first polarizing plate roll; a first polarizing plate laminating step including laminating the first polarizing plate to the first substrate; a second polarizing plate providing step including providing a second polarizing plate from a second polarizing plate roll; a second polarizing plate laminating step including laminating the second polarizing plate to the second substrate to obtain a liquid crystal display panel after laminating the first polarizing plate to the first substrate; and an inspecting step including optically inspecting the liquid crystal display panel without applying voltage to the liquid crystal panel, wherein the first substrate is less susceptible to electrostatic decay in the liquid crystal cell than the second substrate.

Method for manufacturing liquid crystal display panels

A system for manufacturing an optical display device includes providing a roll of a belt-shaped sheet material including an optical film and a release film, which has score lines previously formed by cutting layers of the material other than the release film. The optical film is bonded to a rectangular optical display unit of the display device. In the bonding steps, a first optical film is divided by the score lines into pieces each having a length corresponding to a long side of the display unit, and a second optical film is divided by the score lines into pieces each having a length corresponding to a short side of the display unit. The first optical film has a first polarizing plate whose longitudinal direction is parallel to its absorption axis, and the second optical film has a second polarizing plate whose longitudinal direction is parallel to its absorption axis.

System and method for manufacturing optical display device, set of material rolls and method for manufacture thereof

A manufacturing system and manufacturing method for an optical display device, which adheres upper and lower optical films to the optical display device using two rolls having optical anisotropies in the same direction, so that the optical anisotropies are orthogonal to each other. The manufacturing system includes a first feeding device for feeding a first optical film after cutting to a predetermined length, and a second feeding device for feeding a second optical film after cutting to a predetermined length. The first feeding device and the second feeding device correspond to the longer side and the shorter side of the optical display unit, so that the optical film having a width corresponding to the shorter side may be cut to a length corresponding to the longer side, whereas the optical film having a width corresponding to the longer side may be cut to a length corresponding to the shorter side.

Manufacturing system and manufacturing method for optical display device

A manufacturing system is provided with a supplying apparatus of a first sheet material supplying after cutting into a predetermined length, and a supplying apparatus of a second sheet material supplying after cutting into a predetermined length, and the supplying apparatus of the first sheet material and the supplying apparatus of the second sheet material are structured such that one supplying apparatus cuts a long sheet material having a width corresponding to a short side into a length corresponding to a long side, and the other supplying apparatus cuts a long sheet material having a width corresponding to the long side into a length corresponding to the short side, in correspondence to the long side and the short side of the optical display unit.

It is provided that a method and a system for manufacturing an optical display device, which make it possible to bond an optical member and an optical display unit together with a certain degree of cleanliness maintained. The method for manufacturing an optical display device including an optical display unit (W) and an optical member () bonded to the optical display unit (W), which includes a bonding step for bonding the optical member () to the optical display unit (W) in an environment with an airflow.

Growing community of inventors

Ibaraki, Japan

Kazuo Kitada