Transparent conductor, liquid crystal display device and method for producing transparent conductor

A liquid crystal display device, a technology of transparent conductors, applied in conductive materials dispersed in non-conductive inorganic materials, conductive layers on insulating carriers, optics, etc., can solve the problem of increased production costs, reduced manufacturing costs, and reduced productivity problem, to achieve the effect of shielding electromagnetic wave interference, preventing damage, and excellent manufacturing cost

Inactive Publication Date: 2017-04-19
NAGASE CHEMTEX CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] On the other hand, by polishing, damage such as dents may occur on the surface of the glass substrate.
When an ITO layer is provided on a glass substrate with damage such as dents, since the refractive index difference between the glass substrate and the ITO layer is large, the damage is easily seen, and as a result, the display quality may deteriorate
In general, in order to maintain a certain level of display quality in industry, damaged glass substrates are discarded, but there are problems in that productivity (yield yield) decreases and production costs increase.
[0004] In addition, since the thickness of the glass substrate after the polishing process becomes non-uniform, when the ITO layer is provided in this state, the in-plane variation of the film thickness increases, and as a result, it becomes an obstacle to further improving the performance of the display device.
[0005] In addition, sputtering is usually carried out with an ITO layer, and the following problems arise: since a heat load is applied during sputtering, the base material is limited to a heat-resistant base material; sputtering requires a large-scale device, so manufacturing high cost
[0006] In response to this problem, for example, an attempt has been made to make the damage difficult to be seen by laminating a refractive index adjustment layer between the glass substrate and the transparent conductive film (for example, Patent Document 1), but since the refractive index adjustment layer needs to be provided separately, Therefore, there is still room for reduction in manufacturing costs

Method used

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  • Transparent conductor, liquid crystal display device and method for producing transparent conductor
  • Transparent conductor, liquid crystal display device and method for producing transparent conductor
  • Transparent conductor, liquid crystal display device and method for producing transparent conductor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3、5、6、8～53

[0257] Each component was mixed in the weight ratio described in Tables 1-4, and the adhesive composition was produced. Next, the obtained adhesive composition was coated on one side of the polished glass substrate with an applicator so that the film thickness after drying was 15 μm, and dried at 120° C. for 2 minutes to form an adhesive composition on the glass substrate. adhesive layer.

[0258] Next, after stretching the polyvinyl alcohol film 5 times in an iodine aqueous solution, it dried at 50 degreeC for 4 minutes, and produced the polarizing film. A polarizing layer was formed by adhering a triacetyl cellulose (TAC) film as a transparent protective film to both sides of the polarizing film using an ultraviolet curable epoxy adhesive. This polarizing layer was bonded to the above-mentioned adhesive layer.

[0259] In addition, each component was mixed in the weight ratio described in Tables 1 to 4 to prepare a coating composition, and then coated on the above-prepared...

Embodiment 4

[0261] A transparent conductor was obtained in the same manner as in Example 1 except that a cycloolefin-based resin (COP) film was used instead of the TAC film.

Embodiment 7

[0263] After stretching the polyvinyl alcohol film 5 times in an iodine aqueous solution, it dried at 50 degreeC for 4 minutes, and produced the polarizing film. A polarizing layer was formed by adhering a triacetyl cellulose (TAC) film as a transparent protective film to both sides of the polarizing film using an ultraviolet curable epoxy adhesive. Next, each component was mixed in the weight ratio described in Table 1, and after preparing the coating composition, it was coated on the above-prepared polarizing layer with a bar coater (manufactured by Yasuda Seiki Seisakusho Co., Ltd.). A conductive layer was formed on the polarizing layer by heat treatment at 100° C. for 1 minute in a constant temperature dryer (manufactured by Tokyo Rikaki Co., Ltd., WFO-401 type).

[0264] In addition, after mixing the components in the weight ratio described in Table 1 to prepare the adhesive composition, the obtained adhesive composition was coated on one side of the ground glass substrat...

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Abstract

The purpose of the present invention is to provide a transparent conductor which is excellent in terms of productivity and production cost, and wherein a conductive layer is able to be easily formed with a uniform thickness. A transparent conductor according to the present invention is obtained by sequentially laminating, on at least one surface of a polished glass base, an adhesive layer, a polarizing layer and a conductive layer. The conductive layer is formed using a coating composition containing a conductive polymer, and has a surface resistivity of 10<2>-10<5> [Omega] / unit square.

Description

technical field [0001] The invention relates to a transparent conductor, a liquid crystal display device and a method for manufacturing the transparent conductor. Background technique [0002] Conventionally, display devices used in smartphones and the like have a layered structure in which an adhesive layer, a conductive layer, and a polarizing layer are sequentially laminated on a glass substrate. Among them, in order to prevent malfunction of the display device caused by electromagnetic wave interference generated near the display device, the conductive layer is formed using a material such as ITO (Indium Tin Oxide). In recent years, glass substrates have been polished by means of chemical polishing or mechanical polishing to further reduce the thickness and weight of display devices. [0003] On the other hand, damage such as dents may occur on the surface of the glass substrate by performing the polishing treatment. When an ITO layer is provided on a damaged glass sub...

Claims

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Application Information

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IPC IPC(8): G02F1/1333G02F1/1335H01B1/20H01B5/14
CPCG02F1/1333G02F1/1335H01B1/20H01B5/14
Inventor 大堀达也久留岛康功常田义真
Owner NAGASE CHEMTEX CORPORATION
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