JP2012221468A5

JP2012221468A5 -

Info

Publication number: JP2012221468A5
Application number: JP2011090137A
Authority: JP
Filing date: 2011-04-14
Publication date: 2014-05-08
Anticipated expiration: 2031-04-14

Description

請求項６に記載の発明は、透明導電性物質を被着してなる導電膜面を各々が備えた上部フィルム基板及び下部基板を、枠状の接着手段を用いて該導電膜面が互いに対向するように貼り合わせてなるタッチパネルにおいて、前記接着手段は、枠状のフィルムと、該枠状のフィルムが有する前記下部基板に対向する第３の面に貼り合わされた第３の粘着層と、前記枠状のフィルムが有する前記上部フィルム基板に対向する第４の面に貼り合わされた第４の粘着層とから構成され、前記枠状フィルムの線膨張係数は前記上部フィルム基板の線膨張係数と同等以上であり、かつ前記枠状のフィルムは、該枠状のフィルムの延伸軸が前記上部フィルム基板の延伸軸と同一方向となるように配置される、タッチパネルを提供する。 According to the sixth aspect of the present invention, an upper film substrate and a lower substrate each provided with a conductive film surface formed by depositing a transparent conductive material are arranged so that the conductive film surfaces face each other using a frame-like bonding means. In the touch panel formed by bonding, the bonding means includes a frame-shaped film, a third pressure-sensitive adhesive layer bonded to a third surface facing the lower substrate of the frame-shaped film, and the And a fourth adhesive layer bonded to a fourth surface facing the upper film substrate of the frame-shaped film, and the linear expansion coefficient of the frame-shaped film is equal to the linear expansion coefficient of the upper film substrate. above, and the and the film of the frame shape, the stretching axis of the frame-like film is disposed such that the stretching axis in the same direction of the upper film substrate, to provide a touch panel.

請求項１２に記載の発明は、請求項１１に記載のタッチパネルにおいて、前記上部フィルム基板の前記導電被膜が、前記上部フィルム基板に形成されたフィルム側電極の延びる方向に垂直な方向に直線状に除去されている、タッチパネルを提供する。 The invention according to claim 12 is the touch panel according to claim 11, wherein the conductive film of the upper film substrate is linearly formed in a direction perpendicular to a direction in which a film-side electrode formed on the upper film substrate extends. Provide a touch panel that has been removed.

Claims

In a touch panel in which an upper film substrate and a lower substrate each provided with a conductive film surface coated with a transparent conductive material are bonded to each other using a frame-like adhesive means so that the conductive film surfaces face each other ,
The adhering means opposes the frame-shaped foam, the first adhesive layer bonded to the first surface facing the lower substrate of the foam, and the upper film substrate of the foam. The touch panel comprised from the 2nd adhesion layer affixed on the 2nd surface.

The touch panel according to claim 1, wherein the adhesive means is a double-sided adhesive tape having a foam as a base material.

The touch panel according to claim 1, wherein the foam is made of a polyurethane material, a polyolefin material, or an acrylic foam.

The thickness of the foam is 0.2 mm or more and 0.6 mm or less, and the thickness of each of the first and second adhesive layers is 10 μm or more and 40 μm or less. The touch panel according to item 1.

The foam has a density of 240 kg / m ³ or more and 700 kg / m ³ or less, the compression load of the foam is 0.008 MPa or more and 0.032 MPa or less, and the compression residual strain of the foam is 2% or more. And the touch panel of any one of Claims 1-4 which is 4% or less.

In a touch panel in which an upper film substrate and a lower substrate each provided with a conductive film surface coated with a transparent conductive material are bonded to each other using a frame-like adhesive means so that the conductive film surfaces face each other ,
The bonding means includes a frame-shaped film, a third adhesive layer bonded to a third surface facing the lower substrate included in the frame-shaped film, and the upper film substrate included in the frame-shaped film. And a fourth adhesive layer bonded to the fourth surface opposite to
Linear expansion coefficient of the frame-like film is a upper film linear expansion coefficient of the substrate equal to or higher than, and films of the frame shape, the frame-like stretching axis stretching axis in the same direction of the upper film substrate of the film The touch panel is arranged to be.

The touch panel according to claim 6, wherein the adhesive force of the third adhesive layer is set to such an extent that the expanded frame-like film can be shifted in the surface direction in a state of being attached to the lower substrate.

The upper film substrate and the lower substrate are electrically connected by a conductive adhesive, and in the upper film substrate, a slit is provided between a conductive adhesive portion by the conductive adhesive and a touch input region. Item 8. The touch panel according to any one of items 1 to 7.

The touch panel according to claim 8, wherein the shape of the slit includes one of a straight line, a curved line, a cross, and a cross in which the two lines are not orthogonal to each other.

The upper film substrate and the lower substrate are electrically connected by a conductive adhesive, and a dotted line cut is provided between the conductive adhesive portion by the conductive adhesive and the touch input area in the upper film substrate. The touch panel according to any one of claims 1 to 7.

The touch panel according to claim 8, wherein the conductive film of the upper film substrate is removed in the vicinity of the inside of the slit.

The touch panel according to claim 11, wherein the conductive film of the upper film substrate is linearly removed in a direction perpendicular to a direction in which a film side electrode formed on the upper film substrate extends.