Light-transmitting conductive film and touch panel having same
A light-transmitting, conductive film technology, applied to conductive layers on insulating carriers, optics, optical components, etc., can solve the problems of insufficient clarification of the reasons, deterioration of aesthetics, etc., and achieve the effect of improving the visible phenomenon of patterns
Active Publication Date: 2019-08-20
SEKISUI CHEM CO LTD
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Problems solved by technology
[0007] In addition, in recent years, it has also been reported that the pattern portion of the light-transmitting conductive film is easily recognized by heat treatment, and as a result, the appearance is deteriorated (Patent Document 7)
However, the reasons for this are not fully elucidated
Method used
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Examples
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Embodiment
[0129] Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited only to these Examples.
[0130] 1. Examples and Comparative Examples
[0131] 1.0 Preparation of polyethylene terephthalate resin block
[0132] (Pulverization of polyethylene terephthalate resin particles)
[0133] 10 g of polyethylene terephthalate particles with a size of 1 mm were put into 500 ml of liquid nitrogen, and taken out after 5 minutes. Next, pulverization is performed using a bead mill. The outer diameter of the obtained resin block was about 1-50 micrometers. The obtained resin blocks were subdivided and classified respectively.
[0134] (Classification using a rotary airflow type screening device)
[0135] The obtained resin block (outer diameter: 1 to 50 μm) was screened with a fine powder sieve with a mesh of 19 μm to obtain a resin block with an outer diameter of more than 19 μm and 50 μm or less, and then screened with a fi...
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Abstract
Provided is a translucent conductive film that improves pattern visibility. A translucent conductive film, which includes: (A) a translucent support layer; and (C) a translucent conductive layer, wherein the translucent support layer (A) includes: (1) outer diameter A polyester resin block (1) with an outer diameter of 5 μm or more and an average outer diameter of 5 μm to 50 μm, and (2) a polyester resin block (2) with an outer diameter of less than 5 μm and an average outer diameter of 0.5 μm or more and less than 5 μm, The difference between the average outer diameters of the polyester resin block (1) and the polyester resin block (2) is 4 μm or more, and the translucent conductive layer (C) is provided directly or through one or more other layers. On at least one side of the translucent support layer (A), in the perspective image obtained by observing the main surface of the support film composed only of the translucent support layer (A), 500 were observed / mm 2 ~900 pieces / mm 2 of the polyester resin block (1), and 700 pieces / mm were observed 2 ~1100 pieces / mm 2 The polyester resin block (2).
Description
technical field [0001] The present invention relates to a light-transmitting conductive film and a touch panel having the same. Background technique [0002] As a light-transmitting conductive film to be mounted on a touch panel, a film obtained by laminating a light-transmitting conductive layer made of indium tin oxide (ITO) or the like on a light-transmitting support layer made of PET or the like is widely used ( Patent Document 1). [0003] These light-transmitting conductive films are usually mounted on a touch panel after further etching the light-transmitting conductive layer and patterning the light-transmitting conductive layer. In the light-transmitting conductive film in which the light-transmitting conductive layer is patterned in this way, it is known that the pattern of the light-transmitting conductive layer is recognized on the film surface (so-called pattern visibility phenomenon). [0004] In the light-transmitting conductive film obtained by patterning t...
Claims
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IPC IPC(8): B32B27/18B32B27/00G02B1/14G06F3/041H01B5/14
Inventor 福田崇志林秀树村上淳之介
Owner SEKISUI CHEM CO LTD