KR101064644B1 - Touch window having adhesive film with opaque part and transparant part and manufacturing method thereof - Google Patents

Touch window having adhesive film with opaque part and transparant part and manufacturing method thereof Download PDF

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Publication number
KR101064644B1
KR101064644B1 KR1020100059714A KR20100059714A KR101064644B1 KR 101064644 B1 KR101064644 B1 KR 101064644B1 KR 1020100059714 A KR1020100059714 A KR 1020100059714A KR 20100059714 A KR20100059714 A KR 20100059714A KR 101064644 B1 KR101064644 B1 KR 101064644B1
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KR
South Korea
Prior art keywords
adhesive film
opaque
transparent
touch window
layer
Prior art date
Application number
KR1020100059714A
Other languages
Korean (ko)
Inventor
김갑영
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020100059714A priority Critical patent/KR101064644B1/en
Application granted granted Critical
Publication of KR101064644B1 publication Critical patent/KR101064644B1/en

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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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • 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
    • 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

Abstract

The present invention can eliminate the multi-layer printing of the window layer, which has been conventionally performed to cover the signal line wiring part, thereby preventing printing step and resulting bubbles, and simplifying the touch window manufacturing process by eliminating the conventional multi-layer printing process. The present invention relates to a touch window including an adhesive film having an opaque portion and a transparent portion formed thereon. To this end, one embodiment of the present invention is a transparent electrode is formed, the conductive film having a signal wiring on the edge; An adhesive film bonded to an upper portion of the conductive film and having an opaque portion for blocking light incident to the signal wire portion and a transparent portion for passing light incident to the transparent electrode; And a window layer bonded to the upper portion of the adhesive film.

Description

TOUCH WINDOW HAVING ADHESIVE FILM WITH OPAQUE PART AND TRANSPARANT PART AND MANUFACTURING METHOD THEREOF}

The present invention relates to a touch window and a method of manufacturing the same. More particularly, the present invention relates to a touch window including a pressure-sensitive adhesive film formed with an opaque portion and a transparent portion capable of covering a signal line wiring portion of a conductive film without generating printing steps and bubbles.

1 is a cross-sectional view showing a cross section of a conventional multilayer printed touch window. As shown in FIG. 1, in the conventional multilayer printed touch window, the transparent electrode 114 and the signal wiring part 124 are formed on the conductive film 14, and the window layer is disposed between the adhesive films 24. 34 are bonded to each other, and a plurality of printed layers 5 are formed below the window layer 34 so as to cover the signal wiring portion 124.

Here, the plurality of printed layers (5) is printed in black or gray, etc., a printing step of 5 ~ 8 ㎛ occurs once per print, and a printing step of 10 ~ 32 ㎛ occurs when printed usually 2 ~ 4 degrees Done.

As a result, even when the window layer 34 is bonded to the optical clear adhesives (OCA) film used as the adhesive film 24, the lamination and autoclave processes are performed, as shown in FIGS. 2A and 2B. There is a problem that the same bubble (A2, A3) defects easily occur. This poor bubble is because the contact angle of the printing layer 5 is high, the adhesion to the OCA film is lowered, and the bubble is expanded by the impact.

Therefore, there is a need for a touch window that can eliminate the printing step due to the printed layer 5 and solve the bubble generation problem.

The present invention has been made by the necessity as described above, the object of the present invention is to remove the multi-layer printing of the window layer, which has been conventionally performed to cover the signal line wiring portion, the opacity and transparent that can prevent the printing step and the resulting bubble generation It is to provide a touch window and a manufacturing method comprising an additionally formed adhesive film.

An object of the present invention as described above is a transparent electrode is formed, the conductive film having a signal wiring on the edge; An adhesive film bonded to an upper portion of the conductive film and having an opaque portion for blocking light incident to the signal wire portion and a transparent portion for passing light incident to the transparent electrode; And it can be achieved by providing a touch window comprising an adhesive film formed with an opaque portion and a transparent portion; and a window layer bonded to the upper portion of the adhesive film.

The conductive film may be an indium tin oxide (ITO) film.

In addition, the conductive film may be provided in plurality.

And, the pressure-sensitive adhesive film is an inorganic material type adhesive film formed of a single layer, it is preferable that the opaque portion is colored with an opaque pigment on the inorganic material type adhesive film. The single layer can be acrylic or silicone material.

The pressure-sensitive adhesive film is a base-type pressure-sensitive adhesive film formed of a plurality of layers including a base layer, and the opaque portion is preferably colored with an opaque dye on the base layer.

The plurality of layers may include a base layer and a light transparent adhesive layer formed on both sides of the base layer.

The light transparent adhesive layer is preferably made of acrylic or silicone.

In addition, the opaque pigment may be an inorganic pigment.

It is preferable that the adhesive films are pressure sensitive adhesives.

The window layer is preferably a PET (Poly Ethylen Terephthalate) film or glass (glass).

It is preferable that the window layer has a flat lower surface bonded to the adhesive film.

On the other hand, an object of the present invention as another category, the step of forming a transparent electrode on the conductive film (S100); Forming a signal wire portion on the edge of the conductive film (S200); An opaque portion for blocking the light incident to the signal line portion and a transparent portion for passing the light incident to the transparent electrode are formed and bonded to the conductive film (S300); And the window layer is bonded to the adhesive film (S400); can be achieved by providing a method of manufacturing a touch window comprising an adhesive film formed with an opaque portion and a transparent portion.

In the bonding step (S300) of the pressure-sensitive adhesive film, the pressure-sensitive adhesive film is an inorganic type pressure-sensitive adhesive film formed in a single layer, the opaque portion may be the coloring of the opaque pigment on the inorganic type pressure-sensitive adhesive film.

In addition, in the adhesive film bonding step (S300), the adhesive film is a substrate-type adhesive film formed of a plurality of layers including a substrate layer, the opaque portion may be a colored opaque pigment on the substrate layer.

According to one embodiment of the present invention as described above, since the multi-layer printing of the window layer, which has been conventionally performed to cover the signal line wiring part, can be removed, it is possible to prevent the printing step and the generation of bubbles due to this, and the sum between the window layer and the adhesive film There is an effect that can increase the strength.

In addition, there is an effect that can simplify the touch window manufacturing process by removing the multi-layer printing process of the conventional window layer.

1 is a cross-sectional view showing a partial cross section of a conventional multilayer printed touch window,
2A and 2B are exemplary photographs showing bubbles generated in a stepped portion of a conventional multilayer printed touch window;
3 is a cross-sectional view showing a partial cross section of the first embodiment of the touch window including an adhesive film formed with an opaque portion and a transparent portion of the present invention;
4 is a cross-sectional view showing a partial cross section of a second embodiment of the touch window including the adhesive film formed with the opaque portion and the transparent portion of the present invention;
5 is a flowchart sequentially showing an embodiment of a method of manufacturing a touch window including an adhesive film having an opaque portion and a transparent portion of the present invention.

<Touch window  Configuration>

<J Example 1 >

3 is a cross-sectional view showing a partial cross-section of a first embodiment of the touch window including an adhesive film having an opaque portion and a transparent portion of the present invention. As shown in FIG. 3, in the first embodiment, the conductive film 10, the transparent electrode 110 and the signal line wiring unit 120 formed thereon, the adhesive film 20 formed thereon, and the adhesive film 20 formed thereon. It is composed of a window layer 30 formed on the top. In the adhesive film 20, an opaque portion 210 is formed corresponding to the position of the signal line wiring portion 120, and the transparent portion 220 is formed on the transparent electrode 110, which is an active region of the touch panel. .

The first embodiment of the present invention may block the signal line wiring part 120 at the bottom by blocking the light incident through the opaque part 210 of the adhesive film 20. As a result, printing steps and bubbles are prevented through the removal of the print layer 5 as shown in FIG.

The conductive film 10 is an electrically conductive film but also a film having transparency. In this embodiment, an indium-tin oxide (ITO) film is used. In addition, a transparent electrode 110 having a predetermined pattern is formed on the conductive film 10, and the signal line wiring unit 120 for drawing out a touch signal generated in response to a touch through the touch window 30 to the outside is a transparent electrode ( 110).

The signal line wiring part 120 may be provided at the edge of the conductive film 10. Unlike the transparent electrode 110, the signal line wiring part 120 is formed of a metal signal line having good conductivity such as silver and copper for aesthetics in a commercialized touch window. It is concealed.

The adhesive film 20 is bonded between the lower conductive film 10 and the upper window layer 30 to serve as an adhesive. In particular, pressure-sensitive adhesives are also referred to as pressure-sensitive adhesives are possible.

The adhesive film 20 of the first embodiment is an inorganic material adhesive film formed of a single layer. That is, the single layer of the adhesive film 20 is formed of an optical clear adhesive (OCA, Optical Clear adhesives) having a high light transmittance and excellent adhesion. The light transparent adhesive is made of acrylic or silicone and constitutes the transparent part 220 of the first embodiment of the present invention.

On the other hand, the opaque portion 210 is configured by coloring an opaque pigment on a portion of the adhesive film 20, which is a single layer, a colored dye (dye) may be used as the opaque dye, and the adsorption and diffusion on the adhesive film 20 It is colored. The color of the pigment may be black or gray, and may be any other color as long as it is opaque because it covers the signal line wiring part 120.

The window layer 30 directly forms the appearance of the touch window and serves as a protective layer against external forces. Poly Ethylen Terephthalate (PET) film or glass may be used, and the bottom surface to be bonded to the adhesive film 20 is preferably flat. That is, since the opaque part 210 of the adhesive film 20 may cover the signal line wiring part 120, the print layer 5 is not required for the window layer 30.

Although the first embodiment shows an example of a one-layer capacitive touch window as shown in FIG. 3, the first embodiment is also applied to a two-layer capacitive touch window (not shown) having a plurality of conductive films 10. Of course it is possible.

<J 2 Example >

Figure 4 is a cross-sectional view showing a partial cross section of a second embodiment of the touch window including an adhesive film formed with an opaque portion and the transparent portion of the present invention. In the second embodiment, since the structure of the adhesive film 22 is different from that of the adhesive film 20 of the first embodiment and the other structure is the same, only the adhesive film 22 will be described.

As shown in FIG. 4, the adhesive film 22 of the second embodiment has a PET substrate layer constituting the transparent portion 222 and an opaque dye layer constituting the opaque portion 212 as a substrate-type adhesive film. The light-transparent adhesive layers 222a and 222b are bonded to both surfaces thereof.

The pressure-sensitive adhesive film 22 constitutes a plurality of layers including a PET base layer, and in the case of the light-transparent pressure-sensitive adhesive layers 222a and 222b, the pressure-sensitive adhesive film 22 may be formed of an acrylic or silicone material as a light-transparent pressure-sensitive adhesive (OCA). Same as the example. Of course, the PET substrate layer and the light-transparent adhesive layers 222a and 222b are excellent in light transmittance, and the upper and lower light-transparent adhesive layers 222a and 222b are bonded to the window layer 32 and the conductive film 12 to form a pressure-sensitive adhesive. It is also the same as the pressure-sensitive adhesive film 20 of the first embodiment.

The opaque part 212 is a color of the opaque pigment, and a colored pigment may be used as the opaque pigment. In addition, the color of the pigment may be black or gray, but is not limited thereto, and other colors may be used as long as it is opaque.

<Touch window  Manufacturing Method>

5 is a flowchart sequentially showing an embodiment of a method of manufacturing a touch window including an adhesive film having an opaque portion and a transparent portion of the present invention. Referring to FIG. 5, first, the transparent electrode 110 is formed on the conductive film 10 (S100).

Next, the signal wire 120 is formed at the edge of the conductive film 10 (S200).

Next, an opaque portion 210 for blocking the light incident on the signal wire part 120 and a transparent portion 220 for passing the light incident on the transparent electrode are formed on the conductive film 10. It is bonded to (S300).

Here, the adhesive film 20 may be an inorganic type adhesive film formed of a single layer, and the opaque part 210 may be a color of an opaque dye on the inorganic material adhesive film. Alternatively, the pressure-sensitive adhesive film 22 may be a base-type pressure-sensitive adhesive film formed of a plurality of layers including a base layer, and the opaque portion 212 may be obtained by coloring an opaque dye on the base layer.

Finally, as the window layers 30 and 32 are bonded onto the adhesive films 20 and 22 (S400), a method of manufacturing a touch window including an adhesive film on which an opaque portion and a transparent portion are formed is performed.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. In addition, the scope of the present invention is indicated by the appended claims rather than the detailed description above. Also, it is to be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

A1, A2, A3: Bubble
5: printing layer
10, 12, 14: conductive film
110, 112, 114: transparent electrode
120, 122, 124: signal wiring section
20, 22, 24: adhesive film
210, 212: opacity
220, 222: transparent part
222a and 222b: light-transparent adhesive layer
30, 32, 34: window layer

Claims (15)

A conductive film having a transparent electrode formed thereon and having a signal wiring portion at an edge thereof;
An adhesive film bonded to the conductive film and having an opaque portion for blocking light incident to the signal wire portion and a transparent portion for passing light incident to the transparent electrode; And
And a window layer bonded to the upper portion of the adhesive film.
The method of claim 1,
The conductive film is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the ITO film.
The method of claim 1,
The conductive film is a touch window comprising a pressure-sensitive adhesive film formed with an opaque portion and a transparent portion, characterized in that provided in plurality.
The method of claim 1,
The adhesive film is an inorganic type adhesive film formed of a single layer,
The opaque portion is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the opaque pigment is colored on the inorganic material type adhesive film.
The method of claim 4, wherein
The single layer is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the acrylic or silicon material.
The method of claim 1,
The adhesive film is a substrate type adhesive film formed of a plurality of layers including a base layer,
The opaque portion is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the opaque pigment is colored on the base layer.
The method of claim 6,
The plurality of layers is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that it comprises a light transparent adhesive layer formed on both sides of the base layer and the base layer.
The method of claim 7, wherein
The light transparent adhesive layer is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the acrylic or silicon material.
The method of claim 6,
The opaque pigment is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the inorganic pigment.
The method of claim 1,
The pressure-sensitive adhesive film is a pressure-sensitive adhesive, the touch window comprising an adhesive film formed with an opaque portion and a transparent portion.
The method of claim 1,
The window layer is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the PET film or glass.
The method of claim 1,
The window layer is a touch window comprising an adhesive film formed with an opaque portion and a transparent portion, characterized in that the bottom surface is bonded to the adhesive film is flat.
Forming a transparent electrode on the conductive film (S100);
Forming a signal wire portion on the edge of the conductive film (S200);
An opaque portion for blocking light incident to the signal wire portion and a transparent portion for passing light incident to the transparent electrode are formed and adhered to the conductive film (S300); And
Step of bonding the window layer on the adhesive film (S400); Method of manufacturing a touch window comprising an adhesive film formed with an opaque portion and a transparent portion.
The method of claim 13,
In the bonding step of the adhesive film (S300),
The pressure-sensitive adhesive film is an inorganic type pressure-sensitive adhesive film formed of a single layer, wherein the opaque part is a method of manufacturing a touch window comprising an adhesive film having an opaque part and a transparent part, characterized in that the opaque pigments are colored on the inorganic type pressure-sensitive adhesive film. .
The method of claim 13,
In the adhesive film bonding step (S300),
The pressure-sensitive adhesive film is a substrate-type pressure-sensitive adhesive film formed of a plurality of layers including a base layer, wherein the opaque portion is a method of manufacturing a touch window comprising an adhesive film having an opaque portion and a transparent portion, characterized in that the opaque pigments are colored on the base layer. .
KR1020100059714A 2010-06-23 2010-06-23 Touch window having adhesive film with opaque part and transparant part and manufacturing method thereof KR101064644B1 (en)

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KR101281189B1 (en) 2012-11-09 2013-07-02 김지웅 A window of panel for touch screen and manufacturing method of it
KR20160068520A (en) * 2014-12-05 2016-06-15 엘지이노텍 주식회사 Electrode member and touch window including same
KR20170086780A (en) * 2016-01-19 2017-07-27 삼성에스디아이 주식회사 Polarizer plate and display device comprising the same
CN107109140A (en) * 2014-12-19 2017-08-29 3M创新有限公司 The adhesive of ink rank baffle plate is replaced in an electronic
US9774714B2 (en) 2014-01-22 2017-09-26 Samsung Display Co., Ltd. Method for fabricating window member
US9862173B2 (en) 2014-01-22 2018-01-09 Samsung Display Co., Ltd. Method for fabricating window member
KR20180072530A (en) * 2016-12-21 2018-06-29 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20190030523A (en) * 2017-09-14 2019-03-22 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20190074168A (en) * 2017-12-19 2019-06-27 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20190075756A (en) * 2017-12-21 2019-07-01 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
WO2020153640A1 (en) * 2019-01-25 2020-07-30 삼성에스디아이 주식회사 Polarizing plate and optical display device including same

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JP2010117903A (en) 2008-11-13 2010-05-27 Unon Giken:Kk Method for manufacturing transparent touch panel input side transparent resin substrate
KR20110019157A (en) * 2009-08-19 2011-02-25 주식회사 에스에스뉴테크 The main window of a touch screen

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WO2009057628A1 (en) 2007-10-31 2009-05-07 Nissha Printing Co., Ltd. Protective panel with touch input function of electronic device display window and electronic device
JP2010117903A (en) 2008-11-13 2010-05-27 Unon Giken:Kk Method for manufacturing transparent touch panel input side transparent resin substrate
KR20110019157A (en) * 2009-08-19 2011-02-25 주식회사 에스에스뉴테크 The main window of a touch screen

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101281189B1 (en) 2012-11-09 2013-07-02 김지웅 A window of panel for touch screen and manufacturing method of it
US9774714B2 (en) 2014-01-22 2017-09-26 Samsung Display Co., Ltd. Method for fabricating window member
US9862173B2 (en) 2014-01-22 2018-01-09 Samsung Display Co., Ltd. Method for fabricating window member
KR20160068520A (en) * 2014-12-05 2016-06-15 엘지이노텍 주식회사 Electrode member and touch window including same
KR102302823B1 (en) * 2014-12-05 2021-09-16 엘지이노텍 주식회사 Electrode member and touch window including same
US10307985B2 (en) 2014-12-19 2019-06-04 3M Innovative Properties Company Adhesives to replace ink step bezels in electronic devices
CN107109140A (en) * 2014-12-19 2017-08-29 3M创新有限公司 The adhesive of ink rank baffle plate is replaced in an electronic
JP2018500677A (en) * 2014-12-19 2018-01-11 スリーエム イノベイティブ プロパティズ カンパニー Adhesive to replace bezel of electronic device ink step
EP3234744A4 (en) * 2014-12-19 2018-07-11 3M Innovative Properties Company Adhesives to replace ink step bezels in electronic devices
KR20170086780A (en) * 2016-01-19 2017-07-27 삼성에스디아이 주식회사 Polarizer plate and display device comprising the same
KR101871565B1 (en) 2016-01-19 2018-06-27 삼성에스디아이 주식회사 Polarizer plate and display device comprising the same
KR102112864B1 (en) 2016-12-21 2020-05-19 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20180072530A (en) * 2016-12-21 2018-06-29 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR102063206B1 (en) 2017-09-14 2020-01-07 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20190030523A (en) * 2017-09-14 2019-03-22 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20190074168A (en) * 2017-12-19 2019-06-27 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR102126053B1 (en) 2017-12-19 2020-06-23 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR20190075756A (en) * 2017-12-21 2019-07-01 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
KR102126054B1 (en) 2017-12-21 2020-06-23 삼성에스디아이 주식회사 Polarizing plate and optical display device comprising the same
WO2020153640A1 (en) * 2019-01-25 2020-07-30 삼성에스디아이 주식회사 Polarizing plate and optical display device including same

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