KR101721336B1 - Protective Film for Touch Input by Non-Conductive Material - Google Patents

Protective Film for Touch Input by Non-Conductive Material Download PDF

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Publication number
KR101721336B1
KR101721336B1 KR1020150160054A KR20150160054A KR101721336B1 KR 101721336 B1 KR101721336 B1 KR 101721336B1 KR 1020150160054 A KR1020150160054 A KR 1020150160054A KR 20150160054 A KR20150160054 A KR 20150160054A KR 101721336 B1 KR101721336 B1 KR 101721336B1
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South Korea
Prior art keywords
conductive layer
conductive
layer
communication device
portable communication
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KR1020150160054A
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Korean (ko)
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KR20170011954A (en
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이영수
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이영수
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Priority to PCT/KR2016/008080 priority Critical patent/WO2017018756A1/en
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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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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

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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)
  • Position Input By Displaying (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a protective film for a portable communication device capable of touch input by a nonconductive object, more specifically, a pattern electrically connected to each other in a lattice form on a second conductive film on the upper part, When a grid-shaped electrically short-circuiting pattern is formed on the lower second conductive film to touch the portable protective film of the present invention attached on the touch panel of the smartphone using a nonconductive object, And a touch panel, wherein the touch panel is a touch input terminal.

Description

[0001] The present invention relates to a protective film capable of touch input with a non-conductive object,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a protective film for a portable communication device capable of touch input by a nonconductive object, more specifically, a pattern electrically connected to each other in a lattice form on a second conductive film on the upper part, When a grid-shaped electrically short-circuiting pattern is formed on the lower second conductive film to touch the portable protective film of the present invention attached on the touch panel of the smartphone using a nonconductive object, And a touch panel, wherein the touch panel is a touch input terminal.

BACKGROUND ART Conventionally, a technology related to a protective film for a mobile device such as a mobile phone, particularly a mobile device having a touch screen of a capacitive overlay type, is focused on a function of protecting a touch screen of a mobile device such as a mobile phone, Most of them focused on technology development.

In recent years, it has been necessary to develop a protective film technology that allows a user wearing a glove to input information by operating a touch screen of a mobile phone or a smart phone with gloved fingers while wearing gloves.

Touch screen protection of portable communication devices If the cover (lid) of the protective case for protecting the portable communication device from the film or shock or contaminant is realized as a transparent protective film capable of touch input by the non-jamming object, Is expected to create new market demand.

In order to meet such a demand, a laminated protective film technology for a touch screen capable of non-capacitive touch input is disclosed in Patent Registration No. 10-1537659-0000 (the name of the invention: a laminated film for a touch screen capable of inputting a non- Protection case) and a patent application 10-2013-103345 (the name of the invention: a laminated film for a touch screen capable of non-invasive capacitive touch input, a mobile device and a protective case using the laminated film).

However, when the user operates the touch screen on the smartphone by pressing the laminated film for the touch screen, which enables the user to input the touch screen of the conventional non-recurrent capacity type touch, the accurate part of the touch screen Sometimes a problem that can not be touched occurred. For example, even if the user tries to touch 'A', the 'A' portion can not be touched and the side portion is touched.

Further, due to the support for shielding the sensing of the first conductive thin film layer, there is a problem that the portion where the support is installed is not properly recognized.

A patent document similar to a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention includes a patent document 10-1537659-0000 (the name of the invention: a laminated film for a touch screen capable of inputting a non- And 10-2013-103345 (the name of the invention: a laminated film for a touch screen capable of non-invasive capacitive touch input, a mobile device using the same, and a protective case).

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the problems of the prior art described above, and it is an object of the present invention to provide a method of patterning a first conductive layer film of an electronic flux FLUX emitted from a portable communication device such as a smart phone, So that when the user presses one point of the upper end of the protective film of the present invention with a finger or the like, the second conductive layer film is pressed by a specific conductive portion to be contacted in the first conductive layer The object of the present invention is to provide a protective film for a portable communication device capable of performing touch input with a nonconductive object that allows a touch input portion to be accurately touched.

Since the portable communication device develops the software in consideration of the portion of the touch panel such as the size of the finger of the user (for example, the size of the touching portion of the finger) during the production of the product, a consonant or vowel When the size of the portion where the vowel is recognized is manufactured with reference to the size of the product and the like, the width and length of the patterned conductive part of the first conductive layer is referred to as the size of the display panel of the portable communication device, The touch panel of the portable communication device can recognize the touch input through the protective film without malfunction.

In order to achieve the above object, a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention is characterized in that a display panel of a portable communication device in which information is input by a touch of a capacitive touch, A protective film for a portable communication device capable of touch input by a nonconductive object which performs input of information by a touch method,

A first reinforcing layer; A first conductive layer coupled to the first reinforcing layer; A second conductive layer overlying the first conductive layer; And

And a second reinforcing layer coupled to the second conductive layer, wherein the opposing inner rim of the first conductive layer and the second conductive layer are bonded by a rim adhesive layer, Wherein a boundary portion of each of the grid patterns is formed with an etching portion removed by etching and a conductive portion made of a conductive material is formed in a portion excluding the etching portion, And the parts are electrically shorted to each other,

Wherein the second conductive layer forms a grid pattern in which a rectangle or a square of the same shape is arranged in the front, rear, left, and right sides, the boundary line of the grid pattern is made of a conductive material, and the remaining portion except for the border line is etched, .

A second conductive layer is coupled to the second conductive layer and a third conductive layer is coupled to the second conductive layer,

Wherein the protective film fixing sheet layer is further adhered to a bottom surface of the first reinforcing layer to a length longer than the width of the protective film and the protective film is placed on the display panel of the portable communication device The portable communication device is mounted and fixed by the cellular phone case while being in close contact with the side surface and the bottom surface of the portable communication device.

1. A protective film capable of touch input by a nonconductive object that performs input of information by a non-constant-capacitance-type touch method on a display panel on which information is input by a touch of a capacitive touch, comprising: a first reinforcing layer; A first conductive layer coupled to the first reinforcing layer;

A third conductive layer overlying the first conductive layer; And

And a third reinforcing layer coupled to the third conductive layer,

The first conductive layer and the third conductive layer are coupled with each other by a rim adhesive layer, and the first conductive layer is formed with a lattice pattern in which a rectangle or a square of the same shape is arranged in the front, Wherein the boundary of the grid pattern of the first conductive layer forms an etched portion removed by etching and a conductive portion composed of a conductive material is formed in a portion except for the etching portion and each of the conductive portions maintains a state of being electrically short- And a conductive ink pattern portion printed with a metal is formed on the bottom surface of the layer so that the conductive ink is patterned in a line shape of a checkerboard.

A protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention is a touch film for touching a body (especially a finger) on a contact type capacitive overlay touch screen which is a mainstream of a mobile device such as a mobile phone, There is an effect that information input or manipulation can be performed on the touch screen even if a non-conductive tip such as a gloved hand or a normal ballpoint pen is used as well as a capacitive touch input such as a stylus pen having an electrode tip.

According to the present invention, the conductive part is formed in a lattice pattern on the first conductive layer, and the interface between the conductive parts is etched by the etching method so that the conductive parts are electrically short-circuited with each other. When the protective film of the present invention is pressed, the portion to be pressed can be correctly recognized by the portable communication device.

Since the second conductive layer has a checkerboard pattern and only the conductive portion constituted by lines intersecting with each other having a grid shape is constituted by the conductive film and the remaining portion has the constitution in which the conductive film is removed by the etching method, Since the contact area of the second conductive layer is very small when the conductive layer is in contact with the first conductive layer, there is no problem that the second conductive layer falls to the first conductive layer late, so that the response to the touch input is accurate, It is effective.

Further, because of these advantages, there is a remarkable effect that the second conductive layer immediately drops from the first conductive layer when the user presses the protective film with a finger or the like and stops when the user does not install the sub support as in the prior art.

According to the technique disclosed in the above-mentioned prior arts, since the conductive layers can not be touched with each other at the portion where the sub-supports are provided, the touch input is not performed. However, the present invention can solve the problem about the restoring force of the second conductive layer It was solved.

In the present invention, since the air layer is formed between the first conductive layer and the second conductive layer when the portable communication device is dropped on the floor, there is an effect that the shock of the portable communication device is alleviated when the portable communication device is dropped.

In addition, when using a flip cover, when a telephone or a character comes, it is necessary to open the upper part and confirm or operate. However, since the protective film according to the present invention is used as a cover, So that the portable communication device can be operated.

In addition, the protective film according to the present invention can be attached to the surface of a waterproof casing for a mobile phone, which is currently on the market, so that the user can input information into the display unit of the portable communication device even without taking out the portable communication device from the waterproof case .

1 is a perspective view of a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention attached on a display panel of a smartphone.
2 is a laminated structure view illustrating a laminated structure of a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.
3 is a front view showing a detailed structure between a first conductive layer and a second conductive layer in a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.
4 is a plan view showing a patterned structure of a first conductive layer in a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.
5 is a plan view showing a patterned structure of a second conductive layer in a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.
FIG. 6 is an exemplary photograph illustrating that a touch input to a portable communication device does not cause an error even when water or moisture is applied to a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.
FIG. 7 is a laminated structure showing a laminated structure of a protective film for a portable communication device capable of touch input with a nonconductive object according to another embodiment of the present invention, which is printed so as to be patterned with a conductive ink, in a third conductive layer of the present invention.
FIG. 8 is a perspective view of a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention, in which metal printing is performed in a pattern patterned with a conductive ink on a third conductive layer .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

The present invention can make various changes and have various forms of embodiments. In the following drawings, the thicknesses of the respective laminated layers constituting the protective film according to the present invention are expressed thickly or thinly for convenience of understanding.

1 is a perspective view of a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention attached on a display panel of a smartphone.

The protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention can be manufactured by attaching a protective film 100 to a display portion 118 of the portable communication device 110 by using a gloved hand or a non- The touch input or operation can be performed on the display unit 118 of the portable communication device 110 such as a smart phone when the touch input operation is performed on the protective film 100 of the present invention.

An electrostatic touch panel is installed on the display unit 118 of the portable communication device 110 such as a smart phone.

1, a protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention includes a display unit 118 of a portable communication device 110 having a touch panel such as a smart phone, Use it after placing it in close contact with the surface.

The protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention can be used as an opening and closing cover of a mobile phone protective case used for protecting a portable communication device 110 such as a smart phone .

Therefore, unlike the conventional mobile phone case, the user of the present invention can prevent the protection film 100 of the present invention, which does not open the cover of the mobile phone case, The user can input information to the display unit 118 of the portable communication device 110 by touching the protective film 100 with a user's finger or a pen or the like even in the closed state of the film 100. [

2 is a laminated structure view illustrating a laminated structure of a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.

Referring to FIG. 2, a protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention, which is part A of FIG. 1, includes a patterned first conductive layer 10, (30) for tightly joining opposing inner edge portions of the first conductive layer (10) and the second conductive layer (20), a patterned second conductive layer (20) A first reinforcing layer 18 bonded to the first conductive layer 10 under the first conductive layer 10 and a second reinforcing layer 18 bonded to the second conductive layer 20 from above the second conductive layer 20, A protective layer fixing sheet layer 106 adhered to the other surface of the front adhesive layer 60 adhered to the lower surface of the first reinforcing layer 18; A third conductive layer 50 and a second conductive layer 40, which are bonded to the other surface of the front adhesive layer 40, The first is composed of third reinforcing layer which is applied to the upper front surface of the third conductive layer 50.

The first conductive layer 10, the second conductive layer 20, and the third conductive layer 50 according to the present invention may be transparent ITO (Indium Tin Oxide) transparent electrodes, which are currently used as a transparent conductive thin film layer. In addition, conventionally known products are laminated together with reinforcing layers 18, 28, 58 made of a transparent synthetic resin such as PET material or PP, or a glass layer of a thin film.

The edge adhesive layer 30 according to the present invention is composed of a double-sided tape. A double-sided tape having a width of 1.5 to 1.8 mm is provided as the edge adhesive layer 30 over the entire inner edges of the first conductive layer 10 and the second conductive layer 20 of the present invention.

The inner portion of the edge where the first conductive layer 10 and the second conductive layer 20 face each other is closely contacted by the adhesive layer 30 according to the present invention and is sealed so that external air does not pass therethrough do.

The third conductive layer 50 according to the present invention is composed of an ITO transparent conductive thin film layer whose surface is structured so as not to be patterned.

Since the second conductive layer 20 according to the present invention is patterned so as to be connected to each other in a lattice pattern, there is a problem that the durability of the second conductive layer 20 may be weak. In order to solve such a problem, The third conductive layer 50 is configured to adhere to the second reinforcing layer 28 on the second conductive layer 20.

The protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention is constructed such that its length is longer than the width of the width of the protective film, And a protective film fixing sheet layer 106 made of a material.

The protective film fixing sheet layer 106 according to the present invention may be formed by attaching the protective film 100 according to the present invention to the portable communication device 110 in a state in which the protective film 100 is in close contact with the display portion 118 of the portable communication device 110, The protective film 100 according to the present invention is mounted on the portable communication device 110. The portable communication device 110 is mounted on a protective case for a smartphone sold in the market, 110 in a state of being engaged with a cover (lid).

The front adhesive layers (40, 60) of the present invention are thin film layers having an adhesive force, and a conventional transparent double-sided tape for optical use is used.

3 is a front view showing a detailed structure between a first conductive layer and a second conductive layer in a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention. 4 is a plan view showing a patterned structure of a first conductive layer in a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention. 5 is a plan view showing a patterned structure of a second conductive layer in a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.

3 to 5, the first conductive layer 10 of the present invention is configured such that the boundary line of the conductive portion is etched and patterned on the first reinforcing layer 18 in a lattice pattern. The second conductive layer 20 of the present invention is formed under the second reinforcing layer 28 in a lattice pattern that is narrower than the width of each conductive portion 11 of the lattice pattern of the first conductive layer 10, Is patterned.

The patterned first conductive layer 10 and the first reinforcing layer 18 according to the present invention directly contact the display portion 118 of the portable communication device 10. [ The first conductive layer 10 of the present invention is patterned such that the boundaries of the respective conductive portions 11 are etched in a lattice pattern so that the conductive portions 11 of rectangular or square shape and the respective conductive portions 11 Is configured as an etching portion 13 in which the ITO transparent electrode film material is removed by etching so that each of the conductive portions 11 electrically short-circuits with each other.

As the width of the etching section 13 of the present invention is made as narrow as possible, the touch input of the user operates without malfunction.

Since the conductive parts 11 of the first conductive layer 10 according to the present invention are electrically short-circuited to each other and constituted by a plurality of conductive parts 11 having a lattice pattern, The accuracy is high.

The electrically conductive parts 11 arranged at a minute interval from each other in a lattice pattern on the first electrically conductive layer 10 according to the present invention form an electrically shorted pattern and the first electrically conductive part 10 and the first electrically conductive part 10 The portable communication device 110 does not recognize that the external conductive film has come in contact with the portable communication device 110 but the portable communication device 110 does not recognize that the external conductive film has reached the portable communication device 110 in a state in which the reinforcing layer 18 is disposed in direct contact with the display portion 118 of the portable communication device 110 The portable communication device 110 is integrated with the display portion 118 constituted by the capacitive touch panel of the portable communication device 110, so that the software embedded in the portable communication device 110 recognizes.

Therefore, when the electroconductive part 11 of the conductive part 11 of the first conductive layer 10 patterned in a lattice pattern is pressed, there is almost no malfunction in which the information inputted by touching is wrongly recognized .

In the conventional conductive layer formed of the conductive thin film which is not patterned with the conductive parts 11 short-circuited to each other like the first conductive layer 11 of the present invention, when the user touches the finger on the display part 118, There is a problem that the information is recognized to the part where it has not been done. The present invention solves this conventional problem by patterning the first conductive layer 10 as shown in FIG.

The second conductive layer 20 according to the present invention is formed by laminating conductive portions 21 having grid lines intersecting with each other such as intersecting linear lines and portions other than the conductive portions 21 having line shapes crossing each other, And an etching portion 23 from which the conductive ITO transparent electrode material is removed.

The conductive portions 21 of the second conductive layer 20 according to the present invention are composed of an ITO transparent electrode film and are electrically connected to each other. Is shorter than the width or length of each conductive portion 11 formed in the first conductive layer 10 of the present invention.

3, when the lower surface of the protective film 100 for a portable communication device capable of touch input with the nonconductive object according to the present invention is in close contact with the display portion 118 of the portable communication device 110, The user of the present invention presses the second conductive layer 20 formed of the ITO film and formed with the conductive parts 21 electrically connected to each other by using a finger or a ballpoint pen so as to intersect with each other, When the conductive portion 21 of the protruding second conductive layer 20 touches the conductive portion 11 at a certain point of the first conductive layer 10, the display portion 118 of the portable communication device 110 is electrically A signal is input.

The edge adhesive layer 30 is connected to each of the first and second conductive layers 10 and 20 along the inner periphery of the first conductive layer 10 and the second conductive layer 20, do. An air layer 25 is formed between the first conductive layer 10 and the second conductive layer 20 according to the present invention.

The user according to the present invention presses the second reinforcing layer 28 with a finger or a ballpoint pen so that the protruded linear conductive portions 21 of the second conductive layer 20 which are electrically connected to each other are connected to the first conductive layer 10, Of the conductive part (11). The conductive layer 21 of the second reinforcing layer 28 and the conductive layer 20 of the second conductive layer 20 is formed by the restoring force generated by the air layer 25 if the user does not press the second reinforcing layer 28 with a finger or a ball- (11) of the first conductive line layer (10).

In the second conductive layer 20 of the present invention, the thickness of the line of each conductive portion 21 in the line-shaped conductive portions 21 intersecting with the first conductive portion 10 is set to 1 mm or less .

If the user of the present invention does not press the second reinforcing layer 28 with a finger or the like, the conductive portion 21 of the second conductive layer 20 having a very short line thickness is electrically connected to the conductive portion 11 of the first conductive layer 10 Since the contact area is extremely small, the contact can be quickly released.

If the thickness of the line of the conductive part 21 of the ITO transparent film not etched in the second conductive layer 20 according to the present invention is greater than the thickness of the second conductive layer 20 If the area of the conductive portion 21 of the second conductive layer 20 that is pressed by the finger or the like and contacts the first conductive layer 10 is wide, The second conductive layer 20 of the present invention can not quickly release the contact with the first conductive layer 10 of the present invention in real time when the pressing of the reinforcing layer 28 is stopped, There may be a problem of a time delay in which electrical contact is released.

The conductive layers 10, 20 and 50 according to the present invention are formed of a thin ITO conductive film, and pattern shapes can be formed by ITO, vapor deposition, metal printing, UV molding, or the like.

The patterning process for the conductive film, which is the conductive layer 10, 20, 50 used in the present invention, may be performed by using a material (PET, PC, or similar material having scratch resistance) (ITO, vapor deposition, metal printing, molding) is performed on the conductive film to form a pattern.

Pattern formation by the conductive portions 11 and 21 and the etching portions 13 and 23 with respect to the conductive layers 10 and 20 according to the present invention can be performed by any of the currently known operations such as laser etching, .

FIG. 6 is an exemplary photograph illustrating that the touch input to the portable communication device does not cause an error even when water or moisture is applied to a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention.

6, a front adhesive layer 40 (not shown) is formed on a patterned second conductive layer 20 and a second reinforcing layer 28 in a protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention. The third conductive layer 50 and the third reinforcing layer 58, which are adhered by the first conductive layer 50 and the second conductive layer 50, are further applied.

As shown in FIG. 5, the second conductive layer 20 of the present invention is patterned like a checkerboard line, and the conductive portion 21 having a thin line width corresponding to the line portion of the checkerboard is not etched, Part of the ITO film is composed of the etched portion 23 from which the conductive film has been removed.

Since the second conductive portion 20 of the present invention is patterned in the shape of an intersecting line of the checkerboard pattern, the portion made of the ITO conductive material is confined to the conductive portion 21 composed of the lines crossing the widthwise and the longitudinally, In most of the remaining regions, the conductive material is etched as the etching portion 23 to remove the conductive material.

When water is deposited on the film of the second reinforcing layer 28 of the present invention, the user presses the second reinforcing layer and the second conductive layer 20 of the present invention to form the portable device 110, There is a problem that the touch input is not properly performed on the display unit 118 when the touch input is performed on the display unit 118 of the display unit 118. [

This is caused by the fact that the electromagnetic flux emitted from the portable communication device 110 does not act properly with the patterned second conductive layer 20 due to the water on the second reinforcing layer 28 of the present invention .

In order to solve the problem that the touch input is not performed properly when water is deposited on the protective film 100 of the present invention, that is, on the second reinforcing layer 28, the third reinforcing layer 28, The layer 50 and the third reinforcing layer 58 are further adhered.

The third conductive layer 50 according to the present invention is composed of an ITO transparent electrode film which has not been subjected to etching for patterning.

In the case where the conventional portable communication device 110 is inserted into the waterproof case for mobile phone and the surface of the waterproof case is pressed, touch input for operating the display portion 118 of the portable communication device contained in the waterproof case is not easy .

However, when the protective film 100 coated with the third conductive layer 50 according to the present invention is applied to a waterproof case for a conventional mobile phone, the portable communication device 110 is inserted into the waterproof case for a mobile phone, Touching the surface of the waterproof case provided with the protective film 100 facilitates touch input to the display unit 118 of the portable communication device contained in the waterproof case.

7 is a view illustrating another example of a protective film according to the present invention. In the protective film according to the present invention, a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention, Fig.

Referring to FIG. 7, a protective film for a portable communication device capable of touch input with a nonconductive object according to another embodiment of the present invention includes a patterned first conductive layer 10 as shown in FIG. 4, The third conductive layer 50 is formed on the first conductive layer 10 and a rim adhesive layer 30 (not shown) for tightly bonding the inner rim portions of the first conductive layer 10 and the third conductive layer 50 A first reinforcing layer 18 adhered to the lower surface of the first conductive layer 10 under the first conductive layer 10 and a second reinforcing layer 18 bonded to the lower surface of the third conductive layer 50 above the third conductive layer 50. [ And a third reinforcing layer 58 adhered to the upper surface.

The conductive ink pattern part 121 may be patterned in the shape of a checkerboard in place of the ITO film composed of the second conductive layer 20 and the second reinforcing layer 28, And is printed with metal ink.

According to another embodiment of the present invention, the first conductive layer 10 and the first reinforcing layer 18, the second conductive layer 20 and the second reinforcing layer 28, the third conductive layer 50, Three commercialized ITO films composed of the third reinforcing layer 58 are not required, and a protective film having the same constitution can be produced with two ITO films.

6, the second adhesive layer 40 is coated on the entire upper surface of the second reinforcing layer 28, and the third adhesive layer 40 adhered to the other surface of the front adhesive layer 40 A conductive layer 50 and a third reinforcing layer applied to the entire upper surface of the third conductive layer 50.

The first conductive layer 10 and the third conductive layer 50 according to the present invention may be transparent ITO (Indium Tin Oxide) transparent electrodes, which are currently used as a transparent conductive thin film layer. In addition, conventionally known products are laminated together with reinforcing layers 18 and 58 composed of a transparent synthetic resin film such as PET material or PP, or a glass layer of a thin film.

7, instead of using the second conductive layer 20 and the second reinforcing layer 28 which are sold in a laminated state, the conductive ink pattern portion 50 may be formed on the third conductive layer 50, The metal plate 121 can be metal-printed with the conductive ink so as to be patterned in the shape of a checkerboard.

The metal printed conductive ink pattern part 121 according to the present invention can be formed to have a height of 3 to 20 microns.

The edge adhesive layer 30 according to the present invention is composed of a double-sided tape. A double-sided adhesive tape 30 having a width of 1.5 to 1.8 mm is provided on the entire inner edges of the first conductive layer 10 and the third conductive layer 50 of the present invention.

The inner portions of the edges of the first conductive layer 10 and the convexly formed conductive ink pattern portions 121 facing each other are closely contacted with each other by the adhesive layer 30 according to the present invention, Lt; / RTI >

The third conductive layer 50 according to the present invention is composed of an ITO transparent conductive thin film layer.

The conductive ink pattern portions 121 according to the present invention are formed on the third conductive layer 50 so as to be patterned to be connected to each other in a lattice pattern.

Since the conductive ink pattern portion 121 is formed on the third conductive layer 50 according to the present invention by a metal printed conductive ink having a checkerboard pattern and formed by intersecting lines having a grid shape, The contact area of the conductive ink pattern part 121 is very small when the conductive ink pattern part 121 contacts the first conductive layer 10 so that the conductive ink pattern part 121 drops from the first conductive layer 10 The response to the touch input is accurate and rapid, which is not noticeable.

FIG. 8 is a perspective view of a third embodiment of a protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention, in which metal printing is performed in a pattern patterned with a conductive ink on a third conductive layer .

8, according to another embodiment of the present invention, the conductive ink pattern portion 121 may be formed in a line shape of a checkerboard using conductive ink on the third conductive layer 50 instead of the second conductive layer 20 And metal printing may be performed.

The protective film 100 for a portable communication device capable of touch input with a nonconductive object according to the present invention can be applied to portable communication devices such as a portable communication device in which even when nonvolatile capacity type touch input and manipulation using a gloved hand or non- So that information can be inputted or manipulated with respect to a display unit constituted by a touch screen of the apparatus.

The protective film according to the present invention is placed in close contact with the display unit 118 of the portable communication device 110 having a touch panel such as a smart phone.

The protective film for a portable communication device capable of touch input with a nonconductive object according to the present invention can be used as a cover for opening and closing a mobile phone case used for protecting the portable communication device 110 such as a smart phone.

10: first conductive layer 11, 21: conductive part
13, 23: etching section 18: first reinforcing layer
20: second conductive layer 28: second reinforcing layer
30:
40, 60: front adhesive layer 50: third conductive layer
58: Third reinforcing layer
100: protective film 106: protective film fixing sheet layer
110: portable communication device 118: display part
121: conductive ink pattern portion

Claims (5)

delete delete 1. A protective film capable of touch input with a nonconductive object for inputting information by a nonvolatile capacity type touch method on a display panel of a portable communication device in which information is input by a touch of a capacitive touch type,
A first reinforcing layer;
A first conductive layer coupled to the first reinforcing layer;
A second conductive layer overlying the first conductive layer; And
And a second reinforcing layer coupled to the second conductive layer,
Wherein the opposing inner rim of the first conductive layer and the second conductive layer are bonded by a rim adhesive layer,
Wherein the first conductive layer is formed with a lattice pattern in which a rectangle or a square of the same shape is arranged in the front, rear, left, and right sides, the boundary line of each lattice pattern forms an etched portion removed by etching, Wherein each of the conductive parts is electrically short-circuited to each other,
Wherein the second conductive layer forms a grid pattern in which a rectangle or a square of the same shape is arranged in the front, back, right, and left sides, the boundary line of the grid pattern is made of a conductive material and the remaining portion except for the border line is etched to form an etching portion ,
Wherein a second conductive layer is coupled to the second reinforcing layer coupled to the second conductive layer, and a third reinforcing layer is coupled to the second conductive layer.
The method of claim 3,
Wherein the protective film fixing sheet layer is further adhered to a bottom surface of the first reinforcing layer so as to be longer than the width of the protective film and the protective film is placed on the display panel of the portable communication device Wherein the portable communication device is inserted and fixed by the cellular phone case while being in close contact with the side and bottom surfaces of the portable communication device.
1. A protective film capable of touch input with a nonconductive object for inputting information by a nonvolatile capacity type touch method on a display panel of a portable communication device in which information is input by a touch of a capacitive touch type,
A first reinforcing layer;
A first conductive layer coupled to the first reinforcing layer;
A third conductive layer overlying the first conductive layer; And
And a third reinforcing layer coupled to the third conductive layer,
Wherein the opposing inner rim of the first conductive layer and the third conductive layer is bonded by a rim adhesive layer,
Wherein the first conductive layer is formed with a lattice pattern in which a rectangle or a square of the same shape is arranged in the front, rear, left, and right sides, the boundary line of each lattice pattern forms an etched portion removed by etching, Wherein each of the conductive parts is electrically short-circuited to each other,
Wherein a conductive ink pattern portion is printed on the bottom surface of the third conductive layer so that conductive ink is patterned in a line shape of a checkerboard.
KR1020150160054A 2015-07-24 2015-11-14 Protective Film for Touch Input by Non-Conductive Material KR101721336B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2016/008080 WO2017018756A1 (en) 2015-07-24 2016-07-25 Protective film capable of touch input by nonconductive object

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150105401 2015-07-24
KR20150105401 2015-07-24

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KR102393433B1 (en) * 2017-05-22 2022-05-03 이영수 Protective Film for Touch Input by Non-Conductive Material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012079135A (en) * 2010-10-01 2012-04-19 Optrex Corp Touch panel
KR101460772B1 (en) * 2013-08-16 2014-11-14 전자부품연구원 Tactile touch screen apparatus

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Publication number Priority date Publication date Assignee Title
KR101537659B1 (en) 2013-01-29 2015-07-22 오영호 Laminated film for touch screen, mobile device and protective case using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012079135A (en) * 2010-10-01 2012-04-19 Optrex Corp Touch panel
KR101460772B1 (en) * 2013-08-16 2014-11-14 전자부품연구원 Tactile touch screen apparatus

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