KR101621527B1 - Method for producing touch panel - Google Patents

Method for producing touch panel Download PDF

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Publication number
KR101621527B1
KR101621527B1 KR1020150104663A KR20150104663A KR101621527B1 KR 101621527 B1 KR101621527 B1 KR 101621527B1 KR 1020150104663 A KR1020150104663 A KR 1020150104663A KR 20150104663 A KR20150104663 A KR 20150104663A KR 101621527 B1 KR101621527 B1 KR 101621527B1
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KR
South Korea
Prior art keywords
sensing electrode
conductive portion
touch panel
sensing electrodes
vertical sensing
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KR1020150104663A
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Korean (ko)
Inventor
이하영
정복순
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(주)아이에스엘
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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

The present invention relates to a method of manufacturing a touch panel. More particularly, the present invention relates to a manufacturing method of a touch panel in which sensors for sensing the X-axis and the Y-axis are formed on one surface of a resin layer and sensors for sensing the X-axis and the Y-axis intersect with each other, will be.

Description

[0001] METHOD FOR PRODUCING TOUCH PANEL [0002]

The present invention relates to a method of manufacturing a touch panel. More particularly, the present invention relates to a manufacturing method of a touch panel in which sensors for sensing the X-axis and the Y-axis are formed on one surface of a resin layer and sensors for sensing the X-axis and the Y-axis intersect with each other, will be.

BACKGROUND ART [0002] Recently, a touch panel capable of directly inputting information directly to a video display device such as a liquid crystal display device or an organic light emitting device by using a finger or a pen has been applied in various fields including a mobile terminal.

The touch panel has a resistive type, a capacitive type, and the like. However, the resistance film type has a drawback in that the operation is inconvenient and the position recognition is not accurate, so that the capacitance type is mainly used.

The electrostatic capacity method is a method of recognizing the touch of the user by sensing that the capacitance of the touch area is changed when the finger or the pen touches it. The electrostatic capacity method has been widely used in recent touch panels because of its high response time and excellent permeability.

In the case of a capacitive touch panel, various types such as an add-on type, a cover window integral type, and a display integrated type are used.

Among them, GFF (Glass - ITO Film - ITO Film) structure of film electrode method uses one glass and two ITO films and patterning fine electrode patterns for detecting X axis and Y axis on two ITO films Patterning) is applied to Glace. The GFF structure has been a proven technology for a long time and is stable. Recently, a touch panel can be produced at a low manufacturing cost due to a decrease in the ITO film price, but the optical specification such as transparency is deteriorated. In addition, it is difficult to fabricate a large-area touch sensor due to the high sheet resistance of the ITO thin film, and there is a disadvantage in that there is a limitation in implementation of thickness due to the use of two transparent conductive films.

Korean Patent Laid-Open No. 10-2012-0101763 relates to a touch screen panel display device, and more particularly, to a touch screen panel display device using DPW technology to improve the capacitance type of GFF and GG type. However, in the prior art, since a plurality of ITO films are formed, the thickness of the touch panel is increased.

Korean Patent Publication No. 10-2012-0101763

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a touch panel in which an electrode capable of identifying X and Y axes of a touch position is formed on one resin layer.

It is another object of the present invention to provide a method of manufacturing a touch panel in which electrodes capable of identifying X and Y axes are all formed on the same surface of a resin layer.

It is another object of the present invention to provide a method of manufacturing a touch panel in which X-axis and Y-axis microelectrode patterns can intersect without interfering with each other electrically.

To this end, the present invention provides a method of manufacturing a liquid crystal display, comprising: forming a plurality of first and second horizontal sensing electrodes on a top surface of a resin layer, the first and second horizontal sensing electrodes having a crossing region electrically insulated from the vertical sensing electrodes and the vertical sensing electrodes; 1 forming a first insulating portion and forming a first conductive portion in a first etched region, forming a second insulating portion on a top surface of the first conductive portion through a mask and performing a second etching treatment, And forming a second conductive portion in the etched region.

According to the present invention, since the vertical sensing electrode and the first and second horizontal sensing electrodes for recognizing the X axis and the Y axis are formed on one resin layer, it is possible to identify both the X axis and the Y axis on the upper surface of one touch panel resin layer As a result, the thickness of the touch panel can be reduced.

Furthermore, although the X-axis and the Y-axis are formed on the same surface and intersect with each other, since the respective sensing electrodes are electrically insulated from each other and do not interfere with each other, the generation of static electricity can be effectively detected.

1 is a view illustrating a touch panel according to an embodiment of the present invention.
2 is a diagram illustrating touch sensing of a resin layer in a method of manufacturing a touch panel according to an embodiment of the present invention.
3 is a view illustrating a resin layer of a method of manufacturing a touch panel according to an embodiment of the present invention.
4 to 14 are flowcharts illustrating a method of manufacturing a touch panel according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Also, in order to clearly illustrate the present invention in the drawings, portions not related to the present invention are omitted, and the same or similar reference numerals denote the same or similar components.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A method of manufacturing a touch panel according to an embodiment of the present invention includes forming at least one vertical sensing electrode 110 in one axial direction on an upper surface of a resin layer 11 and forming a crossing region electrically insulated from the vertical sensing electrode 110 Forming a plurality of first and second horizontal sensing electrodes 130 having a first area 210 and a second area 220 on the upper surface of the first area 210, Forming a first conductive portion 310, forming a second insulating portion 410 on the upper surface of the first conductive portion 310 through a mask and performing a second etching process, and forming a second conductive portion 320).

The first conductive portion 310 and the second conductive portion 320 are a bridge portion 300 for electrically connecting the first horizontal sensing electrode 120 and the second horizontal sensing electrode 130. The second insulation part 410 may be formed to cross the first insulation part 210 so that the first horizontal sensing electrode 120 and the second horizontal sensing electrode 130 can be electrically connected to each other through the bridge part 300. [ Do not.

When one vertical sensing electrode 110 is provided, the length of the first insulating portion 210 is longer than the distance from the center of the vertical sensing electrode 110 to the side wall.

When a plurality of the vertical sensing electrodes 110 are provided, the first insulating portion 210 is longer than the distance from the center of the plurality of vertical sensing electrodes 110 to the sidewall located farthest from the center.

The second conductive portion 320 is longer than the distance from the center of the first insulation portion 210 to the side wall.

Accordingly, the first and second horizontal sensing electrodes 130 provided in the horizontal direction with the vertical sensing electrode 110 and the vertical sensing electrode 110 provided in the vertical direction are not electrically connected to each other. The first and second horizontal sensing electrodes 130 and 130 are electrically connected to each other through the bridge unit 300 so that the first and second horizontal sensing electrodes 120 and 130 May be electrically connected to each other without interfering with each other even if they are on the same plane as the vertical sensing electrode 110.

The sensing electrodes 110, 120 and 130 formed on the resin layer 11 of the present invention may be formed of a conductive material. For example, ITO (Indium-Tin Oxide) or the like. In detail, ITO is used as a transparent material mainly for display panels such as PDP and LCD, and in the case of ITO film, it is formed in a transparent state and thus can be used in various forms. The touch panel has a structure of a single or a plurality of ITO films so that a user can specify the touched position by sensing static electricity generated by touching the touch panel. More specifically, in such an ITO film, a sensing electrode is formed in the direction of the single axis (X axis) or the other axis (Y axis). When a plurality of ITO films are used, When one ITO film is used, sensing electrodes are formed on the front and rear surfaces of the ITO film, respectively, to sense the user's touch. Here, the ITO film reduces the number of films so that a more effective and less bulky film is more advanced. However, when the unidirectional and biaxial sensing electrodes are formed on one surface in addition to the structure in which the sensing electrodes are formed on the above-described one surface and the rear surface, currents may flow or interference may occur between the uniaxial and biaxial sensing electrodes. Occurs. In order to solve the above problems, the present invention provides an ITO film having a structure in which both uniaxial and biaxial sensing electrodes are formed on one surface of an ITO film but current does not flow between the sensing electrodes, thereby preventing the ITO film from interfering with each other.

Hereinafter, each step will be described in detail with reference to FIG. 4 to FIG.

4, first and second horizontal sensing electrodes 120 and 130 having a crossing area electrically insulated from the vertical sensing electrode 110 and the vertical sensing electrode 110 are formed on the upper surface of the resin layer 11 The method can be formed by pressing the mold 20. A pattern can be formed on the resin layer 11 in detail by forming a resin layer 11 on the upper surface of the substrate 10 in detail and pressing the mold 20 on which the pattern is formed. 4, the substrate 10 and the resin layer 11 are both represented. However, for the sake of more intuitive explanation, the substrate 10 and the resin layer 11, In the resin layer 11, the base material 10 will be omitted. The resin layer 11 to be described later is not described together with the substrate 10 but the resin layer 11 to be described later is the resin layer 11 formed on the upper surface of the substrate 10. [

The conductor 20 is then injected into the patterned trenches by the mold 20 and cured.

As a method of injecting the conductor 100 into the patterned groove and curing the conductor 100, the conductor 100 can be injected by applying the conductor 100 to the patterned groove and pushing the conductor 100 through the blade 30 Therefore, when the conductor 100 is injected into the patterned grooves and cured as described above, current flows along the patterned grooves.

Referring to FIGS. 5 to 7, the first insulating layer 210 is formed on the upper surface of the intersection region where the vertical sensing electrodes 110 and the horizontal sensing electrodes intersect with each other through a mask, and first etching is performed.

In detail, the first photosensitive layer 200 is formed by applying a photosensitive material whose properties are changed by light. Then, the first mask M1 previously patterned on the upper surface of the first steel Guam layer is exposed to cure the first photosensitive layer 200 at the position corresponding to the pattern of the first mask M1. Then, the first photoresist layer 200 which is not cured is subjected to a first etching treatment to leave only the first photoresist layer 200 cured. Therefore, the first etching process refers to the first photosensitive layer 200 which is not exposed to the first mask M1 of the first reduction layer 200 and is not cured.

At this time, the cured first photosensitive layer 200 is formed of an insulator which does not flow current, and is defined as a first insulation portion 210.

The first insulating portion 210 is longer than the distance from the center of the vertical sensing electrode 110 to the sidewall of the vertical sensing electrode 110 that is the farthest from the center of the vertical sensing electrode 110.

The first insulating portion 210 may be formed on the upper surface of the vertical sensing electrode 110 and electrically connected to another vertical sensing electrode 110, the horizontal sensing electrode and the first conductive portion 310, . More specifically, the first insulation part 210 is formed on the upper surface of the vertical sensing electrode 110 so that the upper surface of the vertical sensing electrode 110 is sealed so as not to expose the upper surface.

3, when the vertical sensing electrode 110 is provided, the length L2 of the first insulating portion 210 is greater than the length L2 of the vertical sensing electrode 110, The distance L1 is longer than the distance L1.

When a plurality of the vertical sensing electrodes 110 are provided, the length L2 of the first insulating portion 210 is a distance from the center T to the longest distance (L1) to the both sidewalls located on the side wall of the housing.

Next, referring to FIG. 8, a first conductive portion 310 is formed in the first etched region.

Since the first etching process is performed in the region except for the first insulating portion 210 cured through the first mask M1, the first photosensitive layer 200 of the first etched region is removed. Accordingly, grooves are formed by the area of the removed photosensitive layer, and the first conductive portion 310 is formed thereon.

Here, the method of forming the first conductive portion 310 may be the same as the application and curing method using the blade 30 used for forming the vertical sensing electrode 110 and the horizontal sensing electrode.

Referring to FIGS. 9 to 11, the second insulating portion 410 is formed on the upper surface of the first conductive portion 310 through the next mask and is subjected to a second etching treatment.

More specifically, the second photosensitive layer 400 is formed by applying a photosensitive material whose properties are changed by light. Then, a second patterned mask M2 is exposed on the upper surface of the second photosensitive layer 400 to cure the second photosensitive layer 400 at a position corresponding to the pattern of the second mask M2. Then, a second etching treatment is performed on the uncured second photosensitive layer 400 to develop only the second photosensitive layer 400 that has been cured.

Accordingly, the first etched portion refers to the second photosensitive layer 400 which is exposed by the second mask M2 in the second photosensitive layer 400 and is not cured.

In addition, the cured second photosensitive layer 400 is formed of an insulator which does not flow current, and is defined as a second insulator 410.

Next, referring to FIG. 12, a second conductive portion 320 is formed in the second etched region.

Since the second etching process is performed in the region except for the second insulating portion 410 hardened through the second mask M2, the second photosensitive layer 400 of the second etched region is removed. Accordingly, grooves are formed in the region of the removed photosensitive layer, and the second conductive portion 320 is formed thereon.

Here, the method of forming the second conductive portion 320 may be the same as the application and curing method using the vertical sensing electrode 110 and the blade 30 used for forming the horizontal sensing electrode.

3, the length L3 of the second conductive portion 320 is longer than the distance L2 from the center T of the first insulation portion 210 to the side wall.

The second conductive portion 320 is located on the upper surface of the first insulation portion 210 and has a length L3 longer than the length L2 of the first insulation portion 210. [ Accordingly, one end of the second conductive portion 320 is electrically connected to the first conductive portion 310, and the other end is electrically connected to another first conductive portion 310. More specifically, the length L3 of the second conductive portion 320 is set so that the first conductive portion 310 and the first conductive portion 310 are electrically connected to each other through the second conductive portion 320 formed on the upper surface, Is preferably longer than a length value (L2) from the center (T) of the insulation part (210) to both side walls.

Therefore, the first conductive portion 310 and the second conductive portion 320 are in surface contact with each other by a length difference value. That is, the first conductive portion 310 and the second conductive portion 310 are in surface contact with each other by a length value obtained by subtracting the length value L2 of the first conductive portion 310 from the length value L3 of the second conductive portion 320.

13 and 14, a thin film layer G including another resin layer G or a glass layer G may further be formed on the upper surface of the second conductive portion 320 and the second insulating portion 410 .

The touch panel manufactured by the method of manufacturing a touch panel according to an embodiment of the present invention includes a vertical sensing electrode 110 arranged on an upper surface of a resin layer 11 along one axis and at least one vertical sensing electrode 110 along a second axis, The first horizontal sensing electrode 120 and the second horizontal sensing electrode 130 are connected to the bridge unit 300 including the first conductive unit 310 and the second conductive unit 320, ). ≪ / RTI >

Since the first conductive portion 310 and the second conductive portion 320 are electrically insulated from the vertical sensing electrode 110 through the first insulating portion 210 and the second insulating portion 410 on the same stratum, It does not interfere electrically.

Therefore, in the touch panel manufactured by the manufacturing method of the touch panel according to an embodiment of the present invention, the vertical sensing electrode 110 and the first and second horizontal sensing electrodes 120 and 130 are formed on one resin layer 11 The touch panel can be made thinner because it is formed on one surface. Further, since all manufacturing steps are performed on the same surface, the manufacturing time can be shortened and the manufacturing cost is also low.

Furthermore, the present invention is characterized in that each layer is provided so as to be in surface contact with each other, and the layers are formed in order, so that durability is excellent, no current flows at unnecessary positions, and the current is not affected by interference.

The first horizontal sensing electrode 120 and the second horizontal sensing electrode 130 are formed to have a first conductive portion 310 in contact with the upper surface of the first horizontal sensing electrode 120. The first conductive portion 310 is electrically connected to the first horizontal sensing electrode 120, And the second horizontal sensing electrode (130). Also, since the first conductive portion 310 is in surface contact with the second conductive portion 320, durability is excellent. Particularly, in the case of the ITO film applied to the flexible display panel, the portion in contact with the current through the flexible specific image may be easily broken. In the present invention, the first horizontal sensing electrode 120 and the second horizontal sensing electrode 130 And the bridge portion 300 formed by attaching the layers in face-to-face contact with each other is excellent in durability.

The bridge unit 300 electrically connects the first horizontal sensing electrode 120 and the second horizontal sensing electrode 130 to the vertical sensing electrode 110. The bridge unit 300, The first insulating part 210 and the second insulating part 410 do not conduct current to each other, so that the interference phenomenon does not occur. Since the first insulating portion 210 and the second insulating portion 410 are provided in a layer-by-layer manner so as to be in surface contact with the first conductive portion 310 and the second conductive portion 320, This is an excellent feature. That is, the present invention is formed in order on a layer-by-layer basis, and each layer is provided so as to be in surface contact with each other.

It will be apparent to those skilled in the art that various modifications, additions and substitutions are possible, without departing from the spirit and scope of the invention as defined by the appended claims. Should be regarded as belonging to the above-mentioned patent claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. But is not limited thereto.

10: substrate 11: resin layer
20: mold 30: blade
100: conductor 110: vertical sensing electrode
120: first horizontal sensing electrode 130: second horizontal sensing electrode
200: first photosensitive layer 210: first insulating portion
300: bridge portion 310: first conductive portion
320: second conductive portion 400: second photosensitive layer
410: second insulation part M1: first mask
M2: second mask G: glass or resin layer

Claims (6)

A plurality of first horizontal sensing electrodes 120 and a plurality of second horizontal sensing electrodes 130 having an intersection region electrically insulated from the vertical sensing electrode 110 and one or more vertical sensing electrodes 110 on the upper surface of the resin layer 11, );
Forming a first insulation part (210) on the upper surface of the intersection area through a mask and performing a first etching treatment;
Forming a first conductive portion (310) in the first etched region;
Forming a second insulating portion (410) on the upper surface of the first conductive portion (310) through a mask and performing a second etching process; And
And forming a second conductive portion (320) in the second etched region,
The first conductive portion 310 and the second conductive portion 320 are a bridge portion 300 for electrically connecting the first horizontal sensing electrode 120 and the second horizontal sensing electrode 130,
The second insulation part 410 does not intersect with the first insulation part 210,
When the vertical sensing electrode 110 is one, the first insulating portion 210 is longer than the distance from the center of the one vertical sensing electrode 110 to the side wall,
When the plurality of vertical sensing electrodes 110 are plural, the first insulating portion 210 is spaced from the center T of the plurality of vertical sensing electrodes 110 by a distance L 1 And is long,
Wherein the second conductive portion (320) is longer than the distance (L2) from the center of the first insulation portion (210) to the side wall.
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KR1020150104663A 2015-07-23 2015-07-23 Method for producing touch panel KR101621527B1 (en)

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KR1020150104663A KR101621527B1 (en) 2015-07-23 2015-07-23 Method for producing touch panel

Publications (1)

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KR101621527B1 true KR101621527B1 (en) 2016-05-16

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