WO2017018756A1

WO2017018756A1 - Protective film capable of touch input by nonconductive object

Info

Publication number: WO2017018756A1
Application number: PCT/KR2016/008080
Authority: WO
Inventors: 이영수
Original assignee: 이영수
Priority date: 2015-07-24
Filing date: 2016-07-25
Publication date: 2017-02-02

Abstract

The present invention relates to a protective film for a portable communication device which is capable of a touch input by a nonconductive object and, more particularly, to a protective film for a portable communication device which is capable of a touch input by a nonconductive object, in which a grid-like pattern electrically connected to itself is formed on an upper second conductive film constituting a film for a portable communication device at the same time that a grid-like pattern electrically short-circuited to itself is formed on a lower second conductive film, so that when a portable protective film of the present invention attached on the touch panel of a smartphone is touched by means of a nonconductive object, a precise spot on the surface of the touch panel of the smartphone is inputted by the touch.

Description

Protective film with touch input with non-conductive object

The present invention relates to a protective film for a portable communication device capable of a touch input with a non-conductive object. More specifically, the pattern is electrically connected to each other in a lattice shape on the second conductive film on the upper part of the film for portable communication device. In the case of forming a grid-like electrically shorted pattern on the lower second conductive film at the same time to touch the portable protective film of the present invention attached on the touch panel of the smartphone using a non-conductive object The present invention relates to a protective film for a portable communication device capable of touch input with a non-conductive object, wherein a precise point on the surface of the touch panel is a touch input.

The technology related to the protective film for a mobile device such as a conventional mobile phone, in particular, a mobile device having a touch capacitive touch screen is focused on the function of protecting the touch screen of a mobile device such as a mobile phone, or touch sensitivity. Most of the focus was on technology development that raises the cost.

Recently, it was necessary to develop a protective film technology that allows a user wearing gloves to input information by operating a touch screen of a mobile phone and a smartphone with a gloved finger while wearing gloves.

If the touch screen protection film of the portable communication device or the cover (lid) of the protective case for protecting the portable communication device from shocks or contaminants is implemented with a transparent protective film capable of touch input by an uninterruptible object, This increase is expected to generate new market demand.

In order to meet this need, the patented laminated protective film technology for non-capacitive touch input is registered patent 10-1537659-0000 (Invention: Touch screen laminated film for non-capacitive touch input, mobile device using the same) Protective case) and patent application 10-2013-103345 (name of the invention: a touch screen laminated film capable of non-capacitive touch input, a mobile device and a protective case using the same).

However, if the user implements the product by the invention disclosed in the conventional patent document, when the user presses the touch screen laminated film capable of conventional non-capacitive touch input to operate the touch screen on the smartphone, the correct portion of the touch screen is Sometimes a problem that could not be touched. For example, even if the user wants to touch 'ㄱ', a problem arises in that the 'AB' portion is not touched and the portion located next to it is touched.

In addition, due to the support for shielding the sensing of the first conductive thin film layer, there is a problem in that the part where the support is installed is not properly recognized for the touch.

The present invention has been made to solve the above problems of the prior art, by patterning the first conductive layer film of the electronic flux (FLUX) emitted from a portable communication device such as a smart phone, each conductive portion is short-circuited with each other. The electronic flux is collected in each conductive portion, and when the user presses a portion 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 that is in contact with the first conductive layer. An object of the present invention is to provide a protective film for a portable communication device capable of touch input as a non-conductive object that allows a touch input to be accurately touched.

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

In order to achieve the above object, a protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention is a non-capacitive touch method for a display panel in which information is input by a capacitive touch. As a protective film for portable communication devices that can be touched with a non-conductive object that inputs information by

A first reinforcing layer; A first conductive layer bonded over the first reinforcing layer; A second conductive layer on the first conductive layer; And

And a second reinforcing layer bonded on the second conductive layer, wherein the inner edges of the first conductive layer and the second conductive layer facing each other are joined by an edge adhesive layer, and the first conductive layer has the same shape in front, rear, left, and right sides. A lattice pattern in which a rectangular or square is formed, and a boundary line of each lattice pattern forms an etching portion removed by etching, and a conductive portion made of a conductive material is formed in portions except the etching portion, and the respective conductive portions are formed. The parts are characterized in that they are electrically shorted to each other,

The second conductive layer forms a lattice pattern in which a rectangular or square of the same shape is arranged in front, rear, left and right, and the boundary line of the lattice pattern is made of a conductive material, and other portions except the boundary line are etched to form an etching portion. Characterized in that,

A second conductive layer is bonded on the second reinforcing layer bonded on the second conductive layer, and a third reinforcing layer is bonded on the second conductive layer,

The bottom of the first reinforcing layer is further bonded to a protective film fixing sheet layer configured to extend more than the length of the protective film, the protective film fixing sheet layer is placed in close contact with the display panel of the portable communication device. In the state in close contact with the side and the bottom of the portable communication device characterized in that the mobile phone case is fitted and fixed,

A protective film capable of touch input with a non-conductive object for inputting information by a non-capacitive touch method to a display panel on which information is input by a capacitive touch, the first reinforcing layer; A first conductive layer bonded over the first reinforcing layer;

A third conductive layer positioned on the first conductive layer; And

A third reinforcing layer bonded over the third conductive layer,

Opposing inner edges of the first conductive layer and the second conductive layer are joined by an edge adhesive layer, and the first conductive layer has a lattice pattern in which a rectangular or square of the same shape is arranged in front, rear, left and right, respectively. The boundary line of the lattice pattern forms an etching portion removed by etching, and the conductive portion formed of a conductive material is formed in portions except the etching portion, and each of the conductive portions is electrically shorted to each other, and the third conductive portion is formed. The bottom surface of the layer is characterized in that the conductive ink pattern is a metal printed so that the conductive ink is patterned in the shape of a checkerboard.

The protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention has a body (particularly a finger) with respect to a touch screen of a capacitive overlay (capacitive overlay) which is the mainstream of mobile devices such as mobile phones and smartphones. In addition to capacitive touch input such as a stylus pen with an electrode tip, a non-conductive tip such as a gloved hand or a conventional ballpoint pen can be used for inputting or manipulating information on the touch screen.

According to the present invention, the conductive portions are formed in a lattice pattern on the first conductive layer, the interface of each conductive portion is etched by an etching method, and the respective conductive portions are formed in an electrical short circuit with each other. In the case of pressing the protective film of the present invention, the pressed portion can be accurately recognized by the portable communication device.

The second conductive layer has a checkered pattern, and only the conductive portion composed of intersecting lines having a grid shape has a structure in which the conductive film is removed by the etching method, and the second portion has a structure in which the conductive film is removed by the etching method. Since the area where the second conductive layer is in contact with the first 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 late on the first conductive layer, so that the response to the touch input is accurate and rapid. It works.

In addition, because of this advantage, even if the user does not install the sub support as in the prior art, when the user presses the protective film with a finger or the like, there is a remarkable effect that the second conductive layer immediately drops from the first conductive layer.

According to the technique known in the above-mentioned conventional patent document, the portion in which the sub support is installed is not touched because the respective conductive layers cannot be touched with each other, but the present invention solves the problem of the restoring force of the second conductive layer even if the sub support is not provided. Solved.

In the present invention, when the portable communication device is dropped on the floor, the air layer is formed between the first conductive layer and the second conductive layer, thereby reducing the impact of the portable communication device upon falling.

In addition, when using a flip cover, when the phone or text, etc., the top open and check, or must be operated, but since the protective film according to the present invention is used as a cover, without opening the cover consisting of a protective film, directly on the protective film Press to operate the portable communication device.

In addition, by attaching a protective film according to the present invention on the surface of the waterproof case for mobile phones currently on the market, the effect of inputting information to the display unit of the portable communication device even without taking out the portable communication device from the waterproof case There is.

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

2 is a laminated structure diagram showing 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 the first conductive layer and the second conductive layer in the protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention.

4 is a plan view illustrating 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 illustrating 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.

6 is an exemplary photograph illustrating that an error does not occur in a touch input for a portable communication device even when water or moisture is deposited on a protective film for a portable communication device capable of a touch input with a non-conductive object according to the present invention.

7 is a laminated structure diagram showing a laminated structure of a protective film for a portable communication device capable of touch input with a non-conductive object according to another embodiment of the present invention printed patterned with conductive ink on a third conductive layer of the present invention.

FIG. 8 is a three-dimensional view showing a metal printing pattern of a conductive ink patterned on a third conductive layer in another embodiment of a protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention. .

** Description of the symbols for the main parts of the drawings **

10: first conductive layer 11, 21: conductive portion

13 and 23: etching portion 18: first reinforcing layer

20: second conductive layer 28: second reinforcing layer

30: border adhesive layer 40, 60: front adhesive layer

50: third conductive layer 58: third reinforcement layer

100: protective film 106: protective film fixed sheet layer

110: portable communication device 118: display unit

121: conductive ink pattern portion

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention may have various modifications and may have various forms of embodiments. And, in the accompanying drawings below, the thickness of each of the laminated layers constituting the protective film according to the present invention is expressed thick or thin to facilitate the understanding.

The protective film 100 for a portable communication device capable of a touch input with a non-conductive object according to the present invention may be applied to the display unit 118 of the portable communication device 110 using a non-conductive tip such as a hand gloved hand or a ballpoint pen. When the touch input operation is performed on the protective film 100 of the present invention in close contact with the display unit 118 of the portable communication device 110 such as a smart phone, the touch input or operation is enabled.

The display unit 118 of the portable communication device 110, such as a smart phone applied to the present invention is provided with a touch panel of the electrostatic type.

Referring to FIG. 1, a protective film 100 for a portable communication device capable of touch input with a non-conductive object according to the present invention is a display unit 118 of a portable communication device 110 in which a touch panel such as a smartphone is installed. Use after placing close to the surface.

The protective film 100 for a portable communication device capable of a touch input with a non-conductive object in the present invention may be used as an opening and closing cover of a mobile phone protective case used to protect a portable communication device 110 such as a smartphone. .

Therefore, the user of the present invention does not open the protective film 100 of the present invention serving as a cover of the mobile phone protective case even if the user does not open the cover of the mobile phone case, that is, the cover of the mobile phone case (protection of the present invention) Even when the film 100 is closed, information may be input to the display unit 118 of the portable communication device 110 by touching the protective film 100 with a user's finger or a ballpoint pen.

Referring to FIG. 2, the protective film 100 for a portable communication device capable of touch input with a non-conductive object according to the present invention, which is part A of FIG. 1, includes a patterned first conductive layer 10 and the first conductive layer. The patterned second conductive layer 20, which is formed on the top surface 10, and the edge adhesive layer 30 that closely couples the inner edge portions of the first conductive layer 10 and the second conductive layer 20 facing each other. A first reinforcing layer 18 adhered to the first conductive layer 10 under the first conductive layer 10, and an agent adhered to the second conductive layer 20 on the second conductive layer 20. 2 reinforcing layer 28, a protective film fixing sheet layer 106, which is bonded to the other surface of the front adhesive layer 60 adhered to the lower surface of the first reinforcing layer 18, the upper front surface of the second reinforcing layer 28 The front adhesive layer 40 is applied, and the third conductive layer 50 and the phase that is 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 are transparent conductive thin film layers, and an indium tin oxide (ITO) transparent electrode which is currently commercialized may be used. In addition, conventionally known products are laminated and sold together with reinforcing

layers

18, 28, and 58 made of a film of a transparent synthetic resin material such as PET 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 configured to have a width of 1.5 to 1.8 mm over the entire inner edge of the first conductive layer 10 and the second conductive layer 20 of the present invention is provided as the edge adhesive layer 30.

By the adhesive layer 30 according to the present invention, the first conductive layer 10 and the second conductive layer 20 are bonded to each other so that the inner portions of the edges facing each other are tightly coupled to each other, and the air is sealed so that external air does not pass through. do.

The third conductive layer 50 according to the present invention is composed of an ITO transparent conductive thin film layer configured so that the surface is not patterned at all.

Since the second conductive layer 20 according to the present invention is configured to be patterned to be connected to each other in a lattice pattern, there is a problem that the durability may be weak, so that the transparent electrode film is not patterned as a reinforcing layer to solve such a problem. The third conductive layer 50 is configured to be bonded onto the second reinforcement layer 28 on the second conductive layer 20.

The protective film 100 for a portable communication device capable of touch input with a non-conductive object according to the present invention has a length at the bottom thereof, which is configured to extend more than the length of the width of the protective film, and has a flexible PET material or PP. The protective film fixing sheet layer 106 composed of a material is adhesively included.

The protective film fixing sheet layer 106 according to the present invention is a portable communication device 110 in a state where the protective film 100 according to the present invention is tightly covered on the display unit 118 of the portable communication device 110. Placed in close contact with the right and left side of the right side and the bottom portion of the mobile communication device 110 mounted on the protective case for smartphones in the market in this state, the protective film 100 according to the present invention is a portable communication device ( In the combined state with the cover 110 serves as a cover (lid).

The front

adhesive layers

40 and 60 of the present invention are thin film layers having adhesive strength, and optical double-sided tapes, which are conventional products, are used.

3 is a front view showing a detailed structure between the first conductive layer and the second conductive layer in the protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention. 4 is a plan view illustrating 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 illustrating 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 has a conductive portion 21 in a lattice pattern narrower than the width of each conductive portion 11 of the lattice pattern of the first conductive layer 10 under the second reinforcing layer 28. ) Is configured to be patterned.

The patterned first conductive layer 10 and the first reinforcement layer 18 according to the present invention are portions directly contacting the display portion 118 of the portable communication device 10. The first conductive layer 10 of the present invention is patterned so that the boundary of each conductive portion 11 is etched in a lattice pattern, and is formed between the conductive portion 11 and each conductive portion 11 having a rectangular or square shape. Is constituted as an etching portion 13 in which the ITO transparent electrode film material is removed by etching so that each conductive portion 11 is electrically shorted to each other.

As the width of the etching unit 13 of the present invention is configured to be as narrow as possible, it operates without malfunction in the user's touch input.

Since the conductive parts 11 of the first conductive layer 10 according to the present invention are electrically shorted with each other and constitute a plurality of conductive parts 11 formed in a lattice pattern, the display part 118 inputs a signal. Receive high accuracy.

In the first conductive layer 10 according to the present invention, the conductive portions 11 disposed apart from each other at minute intervals in a lattice pattern form an electrically shorted pattern, and the first conductive portion 10 and the first conductive layer 10 are formed. The portable communication device 110 does not recognize that an external conductive film is in contact with the reinforcement layer 18 being disposed in direct contact with the display unit 118 of the portable communication device 110. Software integrated in the portable communication device 110 recognizes that it is integrated with the display unit 118 composed of a capacitive touch panel.

Therefore, when the conductive portion 11 of a predetermined region is pressed among the conductive portions 11 of the first conductive layer 10 patterned in a grid pattern shape, malfunctions almost occurring in which recognition of the information inputted by touch is incorrect occurs. You will not.

In the conventional conductive layer composed of a conductive thin film not patterned with the conductive portions 11 shorted to each other like the first conductive layer 11 of the present invention, when the user presses a finger or the like, the user intentions in the display portion 118. There were many problems that the information was recognized until the part that did not. The present invention solved this conventional problem by patterning the first conductive layer 10 as shown in FIG.

The second conductive layer 20 according to the present invention has a lattice pattern and is etched with respect to portions other than the conductive portions 21 formed of linear lines intersecting with each other, such as the lines of the checkerboard. And an etching portion 23 from which the conductive ITO transparent electrode material has been removed.

The conductive portion 21 having a linear cross shape of the second conductive layer 20 according to the present invention is composed of an ITO transparent electrode film and is electrically connected to each other, and each conductive portion 21 having a linear shape is formed. The length of the interval of is constituted shorter than the length of the horizontal or vertical of each conductive portion 11 formed in the first conductive layer 10 of the present invention.

Referring to FIG. 3, the lower surface of the protective film 100 for a portable communication device capable of touch input with a non-conductive object according to the present invention is in close contact with the display unit 118 of the portable communication device 110. The user of the invention is not etched by pressing the second conductive layer 20, which is formed in a line shape intersecting with each other, using a finger or a ballpoint pen, and is formed of an ITO film and electrically connected to each other. When the conductive portion 21 of the protruding second conductive layer 20 touches the conductive portion 11 at a predetermined point of the first conductive layer 10, the conductive portion 21 of the second conductive layer 20 is electrically connected to the display portion 118 of the portable communication device 110. The signal is input.

The first conductive layer 10 and the second conductive layer 20 according to the present invention is connected to each other along the inner periphery facing each other without the border adhesive layer 30 is configured to be sealed to the outside of the air layer 25 do. Between the first conductive layer 10 and the second conductive layer 20 according to the present invention, an air layer 25 isolated from the outside is formed.

According to the present invention, the user presses the second reinforcement layer 28 with a finger or a ballpoint pen to connect the protruding linear conductive portions 21 electrically connected to each other of the second conductive layer 20 to the first conductive layer 10. In contact with the conductive portion 11. If the user no longer presses the second reinforcement layer 28 with a finger or a ballpoint pen, the conductive portions 21 of the second reinforcement layer 28 and the second conductive layer 20 are caused by the restoring force generated by the air layer 25. Is separated from the conductive portion 11 of the first conductive line layer 10.

In the second conductive layer 20 of the present invention, the thickness of the lines of the respective conductive portions 21 is 1 mm or less in the cross-shaped conductive portions 21 contacting the first conductive portions 10. To form.

If the user of the present invention does not press the second reinforcement layer 28 with a finger or the like, the conductive portion 21 of the second conductive layer 20 having an extremely short thickness of the line is connected to the conductive portion 11 of the first conductive layer 10. Since the contact area is extremely narrow, there is an effect that the contact is released quickly.

If the second conductive layer 20 according to the present invention, the thickness of the width of the line of the conductive portion 21 of the ITO transparent film that is not etched, that is, the user's finger or the like When pressing, if the area of the conductive portion 21 of the second conductive layer 20 which is pressed by the finger or the like and in contact with the first conductive layer 10 is made wide, the user of the present invention uses the second finger or the like. When the pressing of the reinforcing layer 28 is stopped, the second conductive layer 20 of the present invention does not quickly release the electrical contact with the first conductive layer 10 of the present invention in real time. There may also 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 composed of a thin film of ITO conductive film, and may be configured in a pattern shape by ITO, vapor deposition, metal printing, UV molding, and the like.

The patterning process for the conductive film, which is the conductive layer (10, 20, 50) used in the present invention, can be purchased from a conductive film manufacturer or have scratch resistance (materials having similarities such as PET and PC) and glass. After purchasing a panel or the like, the conductive film is coated, printed, coated (ITO, vapor deposition, metal printing, molding), and then a pattern is formed.

Patterning with the

conductive portions

11, 21 and the

etching portions

13, 23 for the

conductive layers

10, 20, 50 according to the present invention is carried out in all currently known operations such as laser, etching, printing, molding, injection, etc. It is possible in a way.

Referring to FIG. 6, the front adhesive layer 40 is formed on the second conductive layer 20 and the second reinforcing layer 28 patterned in the protective film 100 for a portable communication device capable of touch input with a non-conductive object according to the present invention. The third conductive layer 50 and the third reinforcing layer 58 adhered by the N-type) may be configured to further apply.

As shown in Fig. 5, the second conductive layer 20 of the present invention is patterned like a line shape of the checkerboard, and the conductive portion 21 of the width of the thin line corresponding to the line portion of the checkerboard is not etched and the rest is left. The portion of the ITO film is composed of an etching portion 23 in which all of the ITO films are etched to remove the conductive film.

As described above, since the second conductive portion 20 of the present invention is patterned in an intersecting line shape of the checkerboard pattern, the portion composed of the ITO conductive material is limited to the conductive portion 21 composed of horizontally and vertically intersecting lines. Most of the remaining area is the etching portion 23 where the conductive material is etched to remove the conductive material.

Under the above configuration, when water is deposited on the film of the second reinforcement layer 28 of the present invention, the user presses the second reinforcement layer and the second conductive layer 20 of the present invention to carry the portable device 110. When a touch input is applied to the display unit 118, a problem occurs in that the touch input is not properly applied to the display unit 118.

This seems to be caused by the electron flux emitted from the portable communication device 110 not properly electrically interacting with the patterned second conductive layer 20 due to the water deposited on the second reinforcing layer 28 of the present invention. .

In order to solve the problem that the touch input does not work properly when the water is on the protective film 100 of the present invention, that is, on the second reinforcing layer 28, the third conductive surface on the surface of the second reinforcing layer 28 of the present invention. The layer 50 and the third reinforcement layer 58 are further bonded.

The third conductive layer 50 according to the present invention is composed of an ITO transparent electrode film without performing an etching operation for patterning.

When pressing the surface of the waterproof case while the portable communication device 110 is placed in a waterproof case for a mobile phone, a touch input for operating the display unit 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 conventional waterproof case for a mobile phone, the portable communication device 110 is placed in a waterproof case for a mobile phone. Pressing the surface of the waterproof case is installed protective film 100 has the advantage that the touch input to the display unit 118 of the portable communication device contained in the waterproof case is easy.

Figure 7 is another embodiment of the protective film according to the present invention, the third conductive layer of the conductive ink is printed in a patterned shape of the protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention Laminated structure diagram showing the structure.

Referring to FIG. 7, a protective film for a portable communication device capable of touch input with a non-conductive object according to another embodiment of the present invention includes a patterned first conductive layer 10 as shown in FIG. The third conductive layer 50 is formed on the first conductive layer 10, and the edge adhesive layer 30 which closely bonds the inner edge portions of the first conductive layer 10 and the third conductive layer 50 to be in close contact with each other. ), A first reinforcing layer 18 bonded to the lower surface of the first conductive layer 10 below the first conductive layer 10, and a third conductive layer 50 above the third conductive layer 50. The third reinforcement layer 58 is bonded to the upper surface.

In the lower surface of the third reinforcement layer 50 according to the present invention, instead of the ITO film composed of the second conductive layer 20 and the second reinforcement layer 28, the conductive ink pattern portion 121 is conductive to be patterned in the shape of a checkerboard. It is configured to be metal printed with ink.

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

Accordingly, unlike the configuration of FIG. 6, the third conductive layer 20 is coated with the front adhesive layer 40 on the entire upper surface of the second reinforcing layer 28 and adhered to the other surface of the front adhesive layer 40. It consists of the electroconductive layer 50 and the 3rd reinforcement layer apply | coated on the upper whole surface of the said 3rd electroconductive layer 50. As shown in FIG.

The first conductive layer 10 and the third conductive layer 50 according to the present invention are transparent conductive thin film layers, and indium tin oxide (ITO) transparent electrodes that are currently commercialized may be used. In addition, conventionally known products are laminated and sold together with reinforcing

layers

18 and 58 composed of a film of transparent synthetic resin material such as PET material or PP or a glass layer of a thin film.

In the protective film according to another embodiment shown in FIG. 7, the conductive ink pattern portion is formed on the third conductive layer 50 instead of using the second conductive layer 20 and the second reinforcement layer 28 that are sold in a laminated state. The metal 121 can be printed with conductive ink so as to be patterned into a line shape of a checkerboard.

The metal printed conductive ink pattern portion 121 according to the present invention may be configured to have a height of 3 to 20 microns.

And, the edge adhesive layer 30 according to the present invention is composed of a double-sided tape. A double-sided tape configured to have a width of 1.5 to 1.8 mm over the entire inner edge of the first conductive layer 10 and the third conductive layer 50 of the present invention is provided as the edge adhesive layer 30.

By the adhesive layer 30 according to the present invention, the conductive ink pattern portions 121 convexly formed with the first conductive layer 10 are bonded to each other so that the inner portions of the edges facing each other are brought into close contact with each other, and outside air does not pass through. It is configured to be sealed.

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

The conductive ink pattern portion 121 according to the present invention is configured on the third conductive layer 50 to be patterned to be connected to each other in a grid pattern.

The conductive ink pattern portion 121 is formed on the third conductive layer 50 according to the present invention because the conductive ink pattern portion 121 has a checkered pattern and is composed of a metal-printed conductive ink composed of intersecting lines having a grid shape. Since the area of contact of the conductive ink pattern portion 121 when the 121 is in contact with the first conductive layer 10 is very small, the problem that the conductive ink pattern portion 121 falls late from the first conductive layer 10 is reduced. Since it does not occur, the response to the touch input is accurate and there is a remarkable effect.

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

Referring to FIG. 8, according to another embodiment of the present invention, the conductive ink pattern portion 121 is formed in the shape of a checkerboard using conductive ink on the third conductive layer 50 instead of the second conductive layer 20. It can be configured by patterning and metal printing.

The protective film 100 for a portable communication device capable of touch input with a non-conductive object according to the present invention is portable communication even when a non-capacitive touch input and operation using a non-conductive tip such as a gloved hand or a ballpoint pen is performed. In order to enable information input or manipulation to a display unit configured as a touch screen of the device.

In addition, the protective film according to the present invention is used in close contact with the display unit 118 of the portable communication device 110 is installed touch panel such as a smart phone.

The protective film for a portable communication device capable of touch input with a non-conductive object according to the present invention may be used as an opening and closing cover of a mobile phone case used to protect a portable communication device 110 such as a smartphone.

Claims

A protective film that can be touched by a non-conductive object that inputs information by a non-capacitive touch method to a display panel on which information is input by a capacitive touch.

A first reinforcing layer;

A first conductive layer bonded over the first reinforcing layer;

A second conductive layer on the first conductive layer; And

A second reinforcing layer bonded over the second conductive layer,

Opposing inner edges of the first conductive layer and the second conductive layer are joined by an edge adhesive layer,

The first conductive layer has a lattice pattern in which a rectangular or square of the same shape is arranged in front, rear, left, and right sides, and the boundary line of each lattice pattern forms an etching portion removed by etching, and a conductive material is formed at portions except the etching portion. Forming a conductive portion consisting of, wherein each of the conductive portion is a protective film capable of a touch input with a non-conductive object, characterized in that the electrically shorted state is maintained.
The method of claim 1,

The second conductive layer forms a lattice pattern in which a rectangular or square of the same shape is arranged in front, rear, left and right, and the boundary line of the lattice pattern is made of a conductive material, and other portions except the boundary line are etched to form an etching portion. Protective film capable of touch input to a non-conductive object, characterized in that.
The method of claim 2,

The second conductive layer is coupled to the second conductive layer is bonded on the second conductive layer, the protective film capable of touch input with a non-conductive object, characterized in that the third reinforcing layer is bonded on the second conductive layer.
The method of claim 1,

The bottom of the first reinforcing layer is further bonded to a protective film fixing sheet layer configured to extend more than the length of the protective film, the protective film fixing sheet layer is placed in close contact with the display panel of the portable communication device. A protective film capable of touch input with a non-conductive object, characterized in that the state is in close contact with the side and the bottom of the portable communication device in the state by being fitted by a mobile phone case.
A protective film that can be touched by a non-conductive object that inputs information by a non-capacitive touch method to a display panel on which information is input by a capacitive touch.

A first reinforcing layer;

A first conductive layer bonded over the first reinforcing layer;

A third conductive layer positioned on the first conductive layer; And

A third reinforcing layer bonded over the third conductive layer,

Opposing inner edges of the first conductive layer and the second conductive layer are joined by an edge adhesive layer,

The first conductive layer has a lattice pattern in which a rectangular or square of the same shape is arranged in front, rear, left, and right sides, and the boundary line of each lattice pattern forms an etching portion removed by etching, and a conductive material is formed at portions except the etching portion. Forming conductive portions, wherein each of the conductive portions is electrically shorted with each other,

The lower surface of the third conductive layer is a protective film capable of touch input with a non-conductive object, characterized in that the conductive ink pattern portion is metal printed so that the conductive ink is patterned in the shape of a checkerboard.