KR20120136500A - Conductive film - Google Patents
Conductive film Download PDFInfo
- Publication number
- KR20120136500A KR20120136500A KR1020110055473A KR20110055473A KR20120136500A KR 20120136500 A KR20120136500 A KR 20120136500A KR 1020110055473 A KR1020110055473 A KR 1020110055473A KR 20110055473 A KR20110055473 A KR 20110055473A KR 20120136500 A KR20120136500 A KR 20120136500A
- Authority
- KR
- South Korea
- Prior art keywords
- reflectance
- adjusting structure
- layer
- refractive index
- transparent conductive
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a conductive film comprising a substrate, a reflectance adjusting structure, and a transparent conductive layer. The reflectance adjusting structure is provided on the substrate, and the transparent conductive layer is installed on the reflecting adjusting structure so that the reflecting adjusting structure is located between the transparent conductive layer and the substrate, and the transparent conductive layer covers a part of the reflecting adjusting structure. When a light ray enters the transparent conducting layer at one incident angle, the transparent conducting layer reflects the light at the first reflectance, and when the light enters the reflectivity adjusting structure at the same incident angle, the reflectance adjusting structure becomes the second reflectance. Reflects the rays. In addition, the difference value between the first reflectance and the second reflectance is smaller than the first threshold, so that the conductive film according to the present invention can eliminate the display difference between the etched and unetched regions.
Description
FIELD OF THE INVENTION The present invention relates to conductive membranes, and more particularly to conductive membranes that can eliminate display differences between etched and non-etched regions.
With advances in manufacturing technology and constant expansion of various applications, electronic products have become increasingly versatile and provide usability such as high consistency, which makes the user's operation easier. For example, to provide more convenient and intuitive control electronics for users, current electronic information products are increasingly installing touch display panels more and more instead of adopting traditional push key type control buttons.
Currently, the touch panel may be divided into touch panels of roughly resistive, capacitive, infrared, and ultrasonic types, and the most common products may be regarded as resistive touch panels and capacitive touch panels. In today's applications, capacitive touch panels are applied to multi-point touch characteristics to provide an intelligent operation, so capacitive touch panels are becoming increasingly popular among the market and users. However, the capacitive touch panel has a disadvantage that it must be made of a conductor material, and thus, the electronic product must be manipulated by touching the touch panel with a finger. On the other hand, based on the resistive touch panel, the user can operate and control electronic products regardless of what kind of material the user touches the touch panel, thereby improving convenience in using the touch panel. In addition, resistive touch panels are also used in most of the current intermediate product lines for reasons of low cost and mature power generation technology.
According to the traditional touch panel, a conductive film deposited directly on the surface of the glass substrate is provided, and thus, when the conductive film is touched, functions such as signal input and touch position sensing are achieved.
However, the conductive film must undergo a yellow light developing and etching process to obtain a circuit pattern thereon, thereby forming a correlated driving electrical circuit. However, in the actual fabrication process, the etching process may leave an etching trace on the surface, for example, a stepped structure may be formed on the transparent conductive layer. Optical analysis, however, shows that due to the large difference in reflectance between the glass substrate partially exposed by etching and the transparent conductive layer that is not etched, there may be a clear gap in the spectrum, which may result in an image or area that is unclear to the user. In addition to this, the quality of electronic products may be degraded as well as distinct boundaries.
Therefore, the present inventor proposes the present invention that can be improved to the above-described drawbacks while the design is reasonable given the possibility of improvement of the drawbacks described above.
The embodiment according to the present invention adjusts and changes the refractive index and the thickness of the reflectance adjusting structure so that the etched conductive film and the non-etched conductive film have a similar refractive index, and furthermore, traces remaining during the manufacturing process may not be visually detected. Provided is a conductive film that also improves the display effect of the optical image.
The present invention provides a conductive film comprising a substrate, a reflectance adjusting structure, and a transparent conductive layer. The reflectance adjusting structure is installed on the substrate and the transparent conductive layer is installed on the reflecting adjusting structure so that the reflecting adjusting structure is located between the transparent conductive layer and the substrate, and only a part of the reflecting adjusting structure is covered by the transparent conductive layer. When the light beam enters the transparent conductive layer at one incident angle, the transparent conductive layer reflects the light beam at the first reflectance, and when the light beam enters the reflectivity adjusting structure at the incident angle, the reflectance adjusting structure is second Reflecting the light beam with a reflectance, the difference value between the first reflectance and the second reflectance being less than the first threshold.
According to an embodiment of the present invention, the reflectivity adjusting structure of the conductive film includes a hard coating layer, a first refractive index layer, and a second refractive index layer. The hard coating layer is installed on the substrate, the first refractive index layer is installed on the hard coating layer, and the second refractive index layer is installed on the first refractive index layer and in contact with the transparent conductive layer. Here, the thickness of the first refractive index layer is in the range of 100 GPa to 300 GPa, the refractive index of the first refractive index layer is in the range of 1.6 to 2.0, the thickness of the second refractive index layer is in the range of 500 GPa to 700 GPa, and the second refractive index The refractive index of the layer is in the range of 1.42 to 1.46. Further, the substrate is composed of a material in a group of glass and PET, and its refractive index has a value of 1.52.
The conductive film according to the embodiment of the present invention adjusts and changes the refractive index and thickness of the reflectance adjusting structure and the transparent conductive layer so that the etched conductive film and the non-etched conductive film can have similar reflectance. Here, when a part of the topmost transparent conductive layer is etched after the conductive film has been etched, the reflectance when the light beam passes through the transparent conductive layer and the reflectance adjusting structure and enters the conductive film is transmitted through only the reflecting adjusting structure. It is similar to the reflectance when incident on the film. Thus, the conductive film according to the present invention can eliminate the display difference between the etched and non-etched regions, prevents the traces remaining during the manufacturing process from being detected by the naked eye, and improves the display effect of the optical image.
1 is an explanatory diagram of a conductive film according to an embodiment of the present invention.
2 is a three-dimensional view of a conductive film according to an embodiment of the present invention.
BRIEF DESCRIPTION OF DRAWINGS To understand the features and the technical contents according to the present invention better, the present invention will be described with reference to the following detailed description and the accompanying drawings. The accompanying drawings, however, are used only for reference and description and are not intended to limit the invention.
[Conductive Film Example]
1 and 2 together, FIG. 1 is an explanatory diagram of a conductive film according to an embodiment of the present invention. 2 is a three-dimensional view of a conductive film according to an embodiment of the present invention. As shown, the
The
In fact, when the
The
In fact, by adjusting the thickness and refractive index of each layer in the
The transparent
On the other hand, the refractive index of the transparent
From the point of view of reflecting the light beam, when the light beam enters the
On the other hand, when viewed from the viewpoint of transmitting the light beam, when the light beam passes through the transparent
For example, the
In sum, the conductive film provided in the embodiment according to the present invention allows the etched conductive film and the non-etched conductive film to have similar reflectance and transmittance by selecting a reflective conductive structure and a transparent conductive layer having a refractive index and thickness within a specific range. In particular, the conductive film produced according to the specification of the present invention has the effect that the traces remaining during the manufacturing process cannot be visually detected when the light beam enters the conductive film through the transparent film, whether it is a transparent conductive layer or a substrate. Has Thus, the conductive film of the present invention makes it possible to eliminate the display difference between the etched and non-etched regions, to prevent traces remaining in the manufacturing process with the naked eye, and to improve the display effect of the optical image.
Although only preferred embodiments according to the present invention have been described, this cannot limit the scope of the present invention, and therefore, all technical changes having equivalent effects to those based on the specification and the contents of the present invention are all within the scope of the present invention. Included.
1: conductive film 10: substrate
12: reflectance adjusting structure 14: transparent conductive layer
16: adhesive layer 122: hard coating layer
124: first refractive index layer 126: second refractive index layer
R1, R2: reflectances T1, T2: refractive index
Claims (8)
A reflectance adjusting structure provided on the substrate; And
A transparent conductive layer installed on the reflectivity adjusting structure to position the reflecting adjusting structure between the transparent conductive layer and the substrate, and covering a part of the reflecting adjusting structure;
When a light ray enters the transparent conducting layer at one incident angle, the transparent conducting layer reflects the light at the first reflectance, and when the light enters the reflectance adjusting structure at the same incident angle, the reflectance adjusting structure is second. Reflecting the light beam with a reflectance, wherein a difference value between the first reflectance and the second reflectance is less than a first threshold.
The reflectance adjusting structure includes a hard coating layer disposed on a substrate;
A first index of refraction layer disposed on the hard coating layer; And
And a second refractive index layer disposed on the first refractive index layer and in contact with the transparent conductive layer.
The thickness of the first refractive index layer is in the range of 100 GPa to 300 GPa, and the refractive index of the first refractive index layer is in the range of 1.6 to 2.0.
And the thickness of the second refractive index layer is in the range of 500 GPa to 700 GPa, and the refractive index of the second refractive index layer is in the range of 1.42 to 1.46.
And said first threshold is 0.5.
When a light beam is incident on the transparent conductive layer at one incidence angle, the light beam has a first transmittance in the transparent conductive layer, and when the light beam is incident on the reflectivity adjusting structure at the incidence angle, the light beam is in a reflectance adjusting structure. A conductive film having a second transmittance, wherein a difference value between the first transmittance and the second transmittance is less than a second threshold.
And said second threshold is 0.5.
And the substrate is composed of a group of materials consisting of glass and PET, the refractive index of which has a value of 1.52.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110055473A KR20120136500A (en) | 2011-06-09 | 2011-06-09 | Conductive film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110055473A KR20120136500A (en) | 2011-06-09 | 2011-06-09 | Conductive film |
Publications (1)
Publication Number | Publication Date |
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KR20120136500A true KR20120136500A (en) | 2012-12-20 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020110055473A KR20120136500A (en) | 2011-06-09 | 2011-06-09 | Conductive film |
Country Status (1)
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KR (1) | KR20120136500A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111399701A (en) * | 2020-05-09 | 2020-07-10 | 上海天马微电子有限公司 | Touch module, touch display panel and touch display device |
-
2011
- 2011-06-09 KR KR1020110055473A patent/KR20120136500A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111399701A (en) * | 2020-05-09 | 2020-07-10 | 上海天马微电子有限公司 | Touch module, touch display panel and touch display device |
CN111399701B (en) * | 2020-05-09 | 2024-04-02 | 上海天马微电子有限公司 | Touch module, touch display panel and touch display device |
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