KR20150017178A

KR20150017178A - Print layer structure for touch screen panel and forming method thereof

Info

Publication number: KR20150017178A
Application number: KR1020130093148A
Authority: KR
Inventors: 정상덕
Original assignee: (주)멜파스
Priority date: 2013-08-06
Filing date: 2013-08-06
Publication date: 2015-02-16

Abstract

The present invention includes a printed layer formed by stacking a plurality of insulation films have steps by being spaced apart by a predetermined offset on the wire pattern forming areas on a transparent substrate. A step correction insulating layer among the insulation films on the printed layer can be formed to cover other insulating films formed below; and the present invention can improve a failure of disconnection occurring on the transparent electrode of a touchscreen panel due to the steps.

Description

TECHNICAL FIELD [0001] The present invention relates to a print layer structure and a method of forming a print layer on a touch screen panel,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch screen panel, and more particularly, to a method of forming a print layer of a touch screen panel, Or an additional step difference compensating insulating layer is formed so as to cover the upper part and the step difference of the printed layer after the completion of the printing layer to minimize the occurrence of the step, And more particularly to a print layer structure and a method of forming a touch screen panel.

In addition to the development of mobile communication technology, portable electronic devices such as a smartphone, a personal digital assistant (PDA), and a tablet PC can be used for displaying audio information, moving pictures, web browsing, and the like. [0003] In recent years, Accordingly, it is required to realize a display screen as wide as possible within a limited size of the portable electronic device, so that most portable electronic devices can be operated without requiring a separate key button or keypad. A touch screen panel is being applied.

Such a touch screen panel is disposed at an upper portion of an LCD module to generate a corresponding key input information by recognizing a touch from a user. The touch screen panel may be a resistive type, a capacitive type, an ultrasonic type , Optical sensor method, and electromagnetic induction method.

1 is a plan view showing a capacitive touch screen panel.

Referring to FIG. 1, the touch screen panel 100 may include a transparent substrate 200, a transparent electrode 300 disposed on the transparent substrate 200, and the like.

The transparent substrate 200 is a substrate for supporting the touch screen panel 100 and can function as a support for supporting the print layer 400, the transparent electrodes 300, and the like. The transparent substrate 200 may be formed of glass or a material such as PET (polyethylene terephthalate), PC (polycarbonate), PES (polyethersulfone), PI (polyimide) That is, the transparent substrate 200 is preferably made of a material having excellent light transmittance due to the characteristics of the touch screen panel mounted on the display unit of the electronic apparatus.

The transparent electrode 300 may include a transparent conductive material such as ITO (Indium Tin Oxide), IZO (Indium-Zinc Oxide), or ZnO (Zinc Oxide). That is, the transparent electrode 300 may be formed by applying a transparent conductive material on the transparent substrate 200 and patterning the transparent conductive material into a predetermined shape. Although it has been shown that such a transparent electrode is composed of a combination of a bar, a patch and a line, the shape of the sensing electrode and the driving electrode and the shape of the wiring pattern may vary .

Meanwhile, the transparent substrate 200 may be divided into a first region 210, which is a display region in which an image or an image is displayed, and a second region 220, which is a non-display region.

The first area 210 may be a touch sensing area that receives a touch input of a user and the second area 220 may transmit a signal to the first area 210 or may transmit a signal generated in the first area 210 A wiring pattern or the like may be present. The first region 210 and the second region 220 are distinguished from each other for convenience of explanation. However, the first region 210 and the second region 210 may be integrated.

At this time, the second region 220 may be formed with a print layer 400 for hiding a wiring pattern or the like in a non-display region where wiring patterns and the like exist.

The printed layer 400 may be made of an opaque material and may be made of a material such as white or black.

2 illustrates the structure of the print layer 400. The print layer 400 may be formed of one or more layers for more complete concealment of the wiring pattern and for the clear coloring of the print layer material.

However, when the print layer 400 is formed of a plurality of layers as described above, the step 310 is increased in the non-display region 220 on the transparent substrate 200, and then, in the region where the step 310 exists When the transparent electrode 300 is formed, there is a problem that the transparent electrode 300 is broken due to the step 310.

In addition, malfunctions such as defective recognition of electromagnetic meteorological phenomena and generation of ghost taps due to disconnection of the transparent electrode occur, and when white ink is used as a material of the printing layer, there is a problem that characteristic deterioration occurs in each layer of the printing layer .

Korean Patent Laid-Open Publication No. 10-2011-0047473 (published on May 09, 2011) discloses a method of manufacturing a capacitive touch panel in which a color pattern coated with a nonconductive material and an ITO A transparent electrode layer, a silver electrode layer printed on a bottom edge of the transparent electrode layer, and an insulating layer coated on the bottom surface of the ITO transparent electrode layer and the silver electrode layer, and a method of manufacturing the same.

Accordingly, in forming the print layer of the touch screen panel, the present invention is characterized in that a plurality of the insulating films constituting the print layer are formed by extending a part of the intermediate insulating film so as to cover a step formed in the lower insulating film, A printed layer structure of a touch screen panel which can improve the disconnection defect of the transparent electrode due to the step difference by forming an additional step difference compensating insulating layer so as to cover the upper part and the step difference of the printed layer after completion And methods.

The present invention relates to a print layer structure of a touch screen panel, comprising: a print layer laminated with a plurality of insulating films in a wiring pattern formation area on a transparent substrate; and an upper surface of the print layer And a step-compensating insulating layer formed on the insulating layer.

Further, the step difference compensating insulating layer is formed of a transparent material.

Further, the print layer is characterized in that the plurality of insulating films are laminated.

Each of the insulating films in the print layer is formed so as to be spaced apart from each other by a predetermined offset and to have a step.

Further, the offset is a difference value between the starting point distances of the insulating films in the printing layer.

The plurality of insulating films may be formed of an opaque material.

Further, the opaque material is characterized by being white ink or black ink.

According to another aspect of the present invention, there is provided a print layer structure of a touch screen panel, including: a first insulating film formed first in a print layer composed of a plurality of insulating films in a region where a wiring pattern on a transparent substrate is formed; And a plurality of intermediate layers which are sequentially stacked so as to be spaced apart from each other by a second offset before the formation of the n-1-th insulating film immediately before the n-th insulating film as the final insulating film of the printing layer from the second insulating film. An n-1 insulating film formed on the intermediate insulating film so as to cover a step generated in the intermediate insulating film, and a final insulating film formed on the n-1 insulating film so as to be spaced apart by the first offset do.

The first offset may be a difference in distance between a start point of the first insulating film and a starting point of the second insulating film.

The first offset is set to be relatively larger than the second offset.

The present invention also provides a method of forming a print layer of a touch screen panel, the method comprising the steps of: forming a print layer comprising a plurality of insulating films in a wiring pattern formation area on a transparent substrate; And forming a step-compensating insulating layer covering the stepped portion caused by the stepped portion.

According to another aspect of the present invention, there is provided a method of forming a print layer of a touch screen panel, the method comprising the steps of: forming a first insulating film of a print layer composed of a plurality of insulating films in a region for forming a wiring pattern on a transparent substrate; 1 offset from the second insulating film to the n-1th insulating film immediately before the formation of the (n-1) -th insulating film immediately before the n-th insulating film as the final insulating film of the printing layer, Forming an n-1 insulating film on the intermediate insulating film so as to cover a step generated in the intermediate insulating film; forming a second insulating film on the n- And forming the final insulating film so as to be spaced apart.

The first offset is set to be relatively larger than the second offset.

In forming a print layer of a touch screen panel, in forming a plurality of insulating layers constituting a print layer, a part of the intermediate insulating layer may be extended to cover a step formed in the lower insulating layer, An additional step difference compensating insulating layer is formed so as to cover the upper portion and the step of the print layer to minimize the occurrence of the step, thereby improving the occurrence of defective openings of the transparent electrode due to the step of the print layer in the touch screen panel .

FIG. 1 is a plan view of a conventional capacitive touch screen panel,
FIG. 2 is a print layer structure of a conventional touch screen panel,
FIG. 3 is a print layer structure of a touch screen panel according to an exemplary embodiment of the present invention,
4 is a view illustrating a print layer structure of a touch screen panel according to another embodiment of the present invention.

Hereinafter, the operation principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 3 illustrates a print layer structure of a touch screen panel for improving defective open lines of a transparent electrode according to an exemplary embodiment of the present invention. Referring to FIG.

Hereinafter, a process procedure for forming the print layer structure according to an embodiment of the present invention will be described in detail with reference to FIG.

First, a first insulating layer 502, which is the first insulating layer among the plurality of insulating layers constituting the print layer 500, is formed on the second region 220, which is a region where a wiring pattern or the like is formed on the transparent substrate 200. At this time, the plurality of insulating films constituting the print layer 500 may be formed of an opaque material such as white or black ink.

Next, a second insulating layer 504 is formed on the first insulating layer 502 by a first offset d1. In this embodiment, the first offset d1 between the first insulating film 502 and the second insulating film 504 is set to a second offset d2 (d2) between the first insulating film 502 and the second insulating film 504, For example, the second offset d2 may be formed to be twice as large as the first offset d1.

As described above, the first offset d1 is made relatively larger than the second offset d2 so that a sufficient margin is provided at the distance between the first insulating film and the second insulating film, It is possible to obtain a process margin when the fourth insulating film 508, which is one of the intermediate insulating films, is formed so as to cover the step formed between the second insulating film 504 and the third insulating film 506.

Next, a third insulating layer 506 is formed on the second insulating layer 504 to be spaced apart by a second offset d2.

In the process of forming the fourth insulating film 508 after the third insulating film 506 is formed as above, a second offset (not shown) is formed on the third insulating film 506 as in the case of forming the third insulating film 506 3, the third insulating layer 506 may be extended to form the first insulating layer 502 as well as the third insulating layer 506. In this case, Is formed so as to cover the step difference between the insulating film 504 and the third insulating film 506.

In forming the fourth insulating film 508, the first offset d1 may be relatively larger than the second offset d2 when forming the first insulating film 502 and the second insulating film 504, The fourth insulating film 508 covers the third insulating film 506 and the second insulating film 504 so that the margin is sufficiently secured at a distance between the first insulating film 502 and the second insulating film 504. [ So that it is possible to perform a process for forming the film.

A final insulating layer 510 of the printed layer 500 is formed on the fourth insulating layer 508 by a first offset d1.

Therefore, the fourth insulating film 508, which is a step-compensating insulating film for compensating the steps generated in the second insulating film 504 and the third insulating film 506 of the print layer 500, So that disconnection of the transparent electrode due to the step difference can be prevented when the transparent electrode is formed on the print layer 500 through a subsequent process.

Since the fourth insulating layer 508 basically covers the second insulating layer 504 and the third insulating layer 506, the printing layer structure according to the embodiment of the present invention can be applied to a printing process The roller pushing the ink in the longitudinal direction physically pushes the second insulating film 504 and the third insulating film 506, and bubbles or printing defects may occur. Accordingly, in the embodiment of the present invention, the printing direction in the printing process can be changed to the horizontal direction. As shown in FIG. 1, the touch screen panel to which the present invention is applied does not have a transparent electrode 300 or a plurality of print layer structures on the left and right sides. Therefore, Bubbles or defects can be reduced.

In other words, when the direction in which the printed layer (insulating film) is long is taken as the long axis, the printing direction is set in the same direction as the long axis of the printed layer when the printed layer (insulating film) is formed. For example, when the print layer is elongated along the horizontal axis at the top and bottom of the touch screen panel 100 as shown in Fig. 1, the printing direction is also set to the horizontal direction, and conversely, , The printing direction can also be set in the vertical direction.

Although the fourth insulating layer 508 covers the second insulating layer 504 and the third insulating layer 506 in the exemplary embodiment of the present invention, The third insulating film 506 may be formed to cover only the third insulating film 506 or the fourth insulating film 508 may be formed to cover the third insulating film 506, the second insulating film 504, and the first insulating film 502.

The fifth insulating layer 510 may be formed in a manner that the length of the fifth insulating layer 510 is extended to cover the second insulating layer 504, the third insulating layer 506, and the fourth insulating layer 508 Or the fifth insulating film 510 may be formed to cover the fourth insulating film 508 and the third insulating film 506 or the fifth insulating film 510 may be formed to cover the fourth insulating film 508, 506 may be formed so as to cover the second insulating film 504, or may be formed by deforming the printed layer basically so as to cover the lower printed layer.

4 is a view illustrating a print layer structure of a touch screen panel for improving defective open lines of a transparent electrode according to another embodiment of the present invention.

Hereinafter, a process procedure for forming a print layer structure according to an embodiment of the present invention will be described in detail with reference to FIG.

First, a first insulating layer 602, which is first formed among a plurality of insulating layers constituting the print layer 600, is formed on a second region 220, which is an area where a wiring pattern or the like is formed on the transparent substrate 200.

Next, a second insulating layer 604 is formed on the first insulating layer 602 by an offset d2. In this case, the offset means the distance between the starting points of the adjacent insulating films.

The third insulating layer 606 and the fourth insulating layer 608 are formed on the second insulating layer 604 by applying the same offset as in the process of forming the second insulating layer 604, And an insulating film 610 are sequentially formed.

In this case, when a plurality of insulating films are stacked to form a print layer, a step is generated between the insulating films constituting the print layer. When a transparent electrode is formed on the print layer where such a step is generated, The disconnection of the transparent electrode may occur at the point where the disconnection of the transparent electrode occurs, and malfunctions such as the failure of the electromagnetic vapor recognition and the generation of the ghost touch occur at the disconnection of the transparent electrode.

Accordingly, in the embodiment of the present invention, after the final insulating film 610 at the uppermost end among the plurality of insulating films forming the print layer 600 is formed, as shown in FIG. 4, the upper part of the print layer 600 is included A step difference compensating insulating layer 650 is further formed so as to cover the step of each insulating film in the print layer 600. [ At this time, the plurality of insulating films constituting the print layer 600 may be formed of an opaque material such as white or black ink, whereas the step difference compensating insulating layer 650 may be formed of a transparent material.

Therefore, when the transparent electrode is formed on the upper portion of the print layer 600 through a subsequent process so as to improve the step generated in forming the print layer 600 through the formation of the step difference compensating insulating layer 650, So that disconnection of the transparent electrode by the transparent electrode can be prevented.

FIG. 5 illustrates a structure of a print layer of a touch screen panel for improving defective open lines of a transparent electrode according to another embodiment of the present invention. Referring to FIG.

5 illustrates a structure in which the fourth insulating film 508 covers the third insulating film 506, the second insulating film 504, and the first insulating film 502. FIG. The process procedure in this case is as follows.

Next, a second insulating layer 504 is formed on the first insulating layer 502 to be spaced apart from the first insulating layer 502 by a first offset. In this case, the offset means the distance between the start points of the adjacent insulating films. In the print layer structure shown in Fig. 5, the offset between the respective insulating films can be set to be the same.

Next, a third insulating layer 506 is formed on the second insulating layer 504 so as to be spaced apart from the first insulating layer 504 by a first offset.

In the process of forming the fourth insulating film 508 after the third insulating film 506 is formed, a first offset is formed on the third insulating film 506 as in the case of forming the third insulating film 506 The fourth insulating film 508 may be formed so as to cover the third insulating film 506, the second insulating film 504, and the first insulating film, as shown in FIG. do. Accordingly, the fourth insulating film 508 can cover the step difference due to the height difference between the first insulating film 502, the second insulating film 504, and the third insulating film 506.

The fifth insulating layer 510 may be spaced apart from the starting point of the third insulating layer 506 by a first offset.

The printing layer structure according to another embodiment of the present invention is basically a structure in which the fourth insulating layer 508 covers the first insulating layer 502, the second insulating layer 504, and the third insulating layer 506, The roller pushing the ink in the longitudinal direction physically pushes the second insulating layer 504 and the third insulating layer 506, so that bubbles or printing defects may occur. Accordingly, in the embodiment of the present invention, the printing direction in the printing process can be changed to the horizontal direction. As shown in FIG. 1, the touch screen panel to which the present invention is applied does not have a transparent electrode 300 or a plurality of print layer structures on the left and right sides. Therefore, Bubbles or defects can be reduced.

In addition, in the embodiment of the present invention, a description is made of a printed layer structure in which a fourth insulating film 508 is formed as an insulating film for level difference compensation and covers the first insulating film 502, the second insulating film 504, and the third insulating film 506 The fourth insulating layer 508 may be formed to cover only the third insulating layer 506 or the fifth insulating layer 510 may be formed as a step-compensating insulating layer instead of the fourth insulating layer 508, 510 may be formed to cover the first insulating layer 502 and the second insulating layer 504, the third insulating layer 506 and the fourth insulating layer 508, or the fifth insulating layer 510 may be formed to cover the fourth insulating layer 508, The fifth insulating layer 510 may cover the fourth insulating layer 508 and the third insulating layer 506 may be formed to cover the second insulating layer 504, Basically, the printing layer printed on the upper layer may be formed by variously deforming so as to cover the lower printing layer.

As described above, in the present invention, in forming the print layer of the touch screen panel, when forming a plurality of insulating films constituting the print layer, a part of the intermediate insulating film may be formed so as to cover a step formed in the lower insulating film, An additional step difference compensating insulating layer is formed so as to cover the upper portion and the step portion of the print layer after the completion of the print layer to minimize the occurrence of the step, thereby improving the occurrence of the disconnection of the transparent electrode due to the step of the print layer in the touch screen panel .

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should not be limited by the described embodiments but should be defined by the appended claims.

200: transparent electrode 210: first region
220: second area 500: printing layer
502: first insulating film 504: second insulating film
506: third insulating film 508: fourth insulating film
510: final insulating film

Claims

And a printed layer laminated so that a plurality of insulating films are sequentially spaced apart from each other by a predetermined offset so as to have a step,
Wherein a step-compensating insulating film, which is one of a plurality of insulating films included in the print layer, is formed to cover at least one or more other insulating films formed under the step-compensating insulating film.

The method according to claim 1,
Wherein the step difference compensating insulating film is an insulating film located at the top of the plurality of insulating films.

The method according to claim 1,
Wherein the step difference compensating insulating film is an insulating film located immediately below the uppermost insulating film among the plurality of insulating films.

The method according to claim 1,
Wherein the step difference compensating insulating film is formed so as to cover all the insulating films formed below the step difference compensating insulating film.

The method according to claim 1,
Wherein the insulating layer is an opaque material.

The method according to claim 1,
Wherein the insulating layer is a material that is visible in white or black.

A first insulating film which is formed first in a printing layer composed of a plurality of insulating films in a region where a wiring pattern on a transparent substrate is formed,
A second insulating layer formed on the first insulating layer so as to be spaced apart from the first insulating layer by a first offset,
A plurality of intermediate insulating films sequentially stacked so as to be spaced apart from each other by a second offset before forming the (n-1) th insulating film immediately before the n-th insulating film, which is the final insulating film of the printed layer,
An n-1 insulating film formed on the intermediate insulating film so as to cover a step generated in the intermediate insulating film;
And a second insulating film formed on the n-1 insulating film and spaced apart from the first insulating film by the first offset,
The print layer structure of the touch screen panel.

8. The method of claim 7,
Wherein the first offset comprises:
And a distance between a starting point of the first insulating film and a starting point of the second insulating film.

9. The method of claim 8,
Wherein the first offset comprises:
And the second offset is set to be relatively larger than the second offset.

A step of forming a first insulating film of a print layer composed of a plurality of insulating films in a region where a wiring pattern on a transparent substrate is formed;
Depositing a second insulating layer on the first insulating layer so as to be spaced apart from the first insulating layer by a first offset;
Depositing a plurality of intermediate insulating films sequentially from the second insulating film to a second offset before formation of the (n-1) th insulating film immediately before the nth insulating film as the final insulating film of the print layer;
Forming an n-1 insulating film on the intermediate insulating film to cover a step generated in the intermediate insulating film;
Forming the final insulating film so as to be spaced apart from the n-1 insulating film by the first offset
&Lt; / RTI >

11. The method of claim 10,
Wherein the first offset comprises:
Wherein the distance between the first insulating layer and the second insulating layer is a difference between a starting point of the first insulating layer and a starting point of the second insulating layer.

11. The method of claim 10,
Wherein the first offset comprises:
Wherein the second offset is set to be relatively larger than the second offset.

11. The method of claim 10,
Wherein a printing direction is set in the same direction as the major axis direction of each of the insulating films at the time of forming each of the insulating films.

A first insulating film which is formed first in a printing layer composed of a plurality of insulating films in a region where a wiring pattern on a transparent substrate is formed,
A plurality of intermediate insulating films sequentially stacked from the first insulating film to a predetermined offset before formation of the (n-1) th insulating film immediately before the nth insulating film as the final insulating film of the printing layer;
An n-1 insulating film formed on the intermediate insulating film so as to cover a step generated in the intermediate insulating film and the first insulating film;
And a final insulating layer formed on the n-1 insulating layer.

15. The method of claim 14,
Wherein the final insulating layer is spaced apart from the n-2-th insulating layer located below the (n-1) th insulating layer by the offset.

A step of forming a first insulating film of a print layer composed of a plurality of insulating films in a region where a wiring pattern on a transparent substrate is formed;
Forming a plurality of intermediate insulating films so as to be spaced apart from each other by a predetermined offset before the formation of the (n-1) th insulating film immediately before the nth insulating film as the final insulating film of the print layer from the first insulating film;
An n-1 insulating film formed on the intermediate insulating film so as to cover a step generated in the intermediate insulating film and the first insulating film;
And a final insulating layer formed on the n-1 insulating layer.