KR20090058070A - Two-layer type touch screen and its method - Google Patents

Two-layer type touch screen and its method Download PDF

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KR20090058070A
KR20090058070A KR1020070124685A KR20070124685A KR20090058070A KR 20090058070 A KR20090058070 A KR 20090058070A KR 1020070124685 A KR1020070124685 A KR 1020070124685A KR 20070124685 A KR20070124685 A KR 20070124685A KR 20090058070 A KR20090058070 A KR 20090058070A
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electrostatic
ito
axis
nicking
electrostatic electrode
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KR1020070124685A
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KR100936009B1 (en
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김태환
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주식회사 협진아이엔씨
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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

A two layer type electrostatic capacity touch screen and a manufacturing method thereof are provided to form an electrostatic insulating unit formed between electrostatic electrodes through an insulating etching line, thereby making definition uniform. X axis ITO in which an electrostatic electrode of an X axis is formed and a Y axis ITO in which an electrostatic electrode of a Y axis is formed are formed by a double layer type. An electrostatic electrode(31) and an electrostatic insulating unit(20) are formed by applying etching work to ITO. The electrostatic insulating unit for forming the electrostatic electrode is insulated from the electrostatic electrode through at least one insulating etching line.

Description

투 레이어 방식 정전용량 터치스크린 및 그 제조방법{Two-layer type Touch screen and its method}Two-layer capacitive touch screen and its manufacturing method {Two-layer type Touch screen and its method}

본 발명은 투 레이어 방식 정전용량 터치스크린 및 그 제조방법에 관한 것으로, 더욱 상세하게는 투 레이어 방식 정전용량 터치스크린에 있어서, ITO필름에 코팅된 ITO도전층을 하나의 이상의 절연 애칭선을 통하여 정전전극과 정전절연부를 등 간격으로 형성하여, 터치스크린의 제조에 있어서 엇갈리게 겹쳐지는 정전전극 사이의 겹침 구분선으로 인한 선명도 저하를 방지하도록 함을 목적으로 한 것이다.The present invention relates to a two-layer capacitive touch screen and a method of manufacturing the same. More particularly, in a two-layer capacitive touch screen, an ITO conductive layer coated on an ITO film is electrostatically charged through one or more insulating nickname lines. The purpose of the present invention is to prevent deterioration of sharpness due to overlapping dividing lines between the overlapping electrostatic electrodes in the manufacturing of the touch screen by forming the electrodes and the electrostatic insulating parts at equal intervals.

일반적으로, 터치스크린은 디스플레이에 표시되어 있는 버튼을 손가락으로 접촉하는 것만으로 컴퓨터를 대화적, 직감적으로 조작함으로써 남녀노소 누구나 쉽게 사용할 수 있는 입력장치이다.In general, a touch screen is an input device that can be easily used by anyone of all ages by interactively and intuitively manipulating a computer by simply touching a button displayed on a display with a finger.

이상과 같은 터치스크린은 저항막방식과 정전용량방식, 적외선방식, 초음파 방식 등이 사용되고 있으며 현재로 저항막방식이 대세를 이루고 있고 그 두께를 최소화함에 있어서는 정전용량방식이 사용되고 있다.Resistive film method, capacitive method, infrared method, ultrasonic method and the like are used as the touch screen as described above, and the resistive film method is generally used and the capacitive method is used to minimize the thickness thereof.

여기서, 상기 정전용량방식의 터치스크린은 그 구조가 도전투광판으로 이루어진 ITO와, 상기 ITO의 테두리에 은분페인트를 페인트 형성한 전극부와, 상기 전 극부의 하부를 절연하는 절연코팅부와, 상기 전극부의 터치로 인한 오동작을 방지하기 위하여 상면에 전극부의 상측에 코팅된 차폐코팅부로 구성되는 것이다.The capacitive touch screen may include an ITO structure having a conductive floodlight plate, an electrode portion having a silver powder painted on the edge of the ITO, an insulating coating portion for insulating the lower portion of the electrode portion, and In order to prevent the malfunction due to the touch of the electrode portion is to consist of a shielding coating coated on the upper side of the electrode portion.

그리고, 상기 ITO는 투광성 수지로 이루어진 ITO필름과, 상기 ITO필름의 하부에 도전성 물질이 코팅 형성된 ITO도전층으로 구성되는 것으로, 상기 ITO는 X축의 정전전극을 형성한 X축 ITO와 Y축의 정전전극을 형성한 Y축 ITO로 구성하고 이를 복층으로 형성한 투 레이어(2 layer) 방식으로 개발되어 사용되고 있다.The ITO is composed of an ITO film made of a translucent resin and an ITO conductive layer having a conductive material coated on the lower portion of the ITO film, wherein the ITO is formed of an X-axis ITO and an Y-axis electrostatic electrode. It has been developed and used in a two-layer (2 layer) method consisting of a Y-axis ITO formed in the form of a double layer.

이상과 같은 투 레이어 방식의 ITO의 제조는 ITO필름에 도전성 물질을 코팅하여 ITO도전층을 형성하고, 상기 ITO도전층을 애칭작업을 통하여 정전전극을 등 간격을 형성하며 상기 정전전극의 사이에는 애칭작업을 통하여 정전절연부가 형성되게 제조하는 것으로서, X축 ITO의 정전전극은 Y축 ITO의 정전전극부의 정전절연부에 위치되게 애칭형성되고, Y축 ITO의 정전전극은 X축 ITO의 정전전극부의 정전절연부에 위치되게 애칭형성되는 것이다.In the production of the two-layer ITO as described above, an ITO conductive layer is formed by coating a conductive material on the ITO film, and the electrostatic electrode is formed at equal intervals by nicking the ITO conductive layer, and the nicking is formed between the electrostatic electrodes. The electrostatic insulation is formed to be formed through the work, wherein the electrostatic electrode of the X-axis ITO is nicknamed to be located in the electrostatic insulation of the electrostatic electrode portion of the Y-axis ITO, and the electrostatic electrode of the Y-axis ITO is the electrostatic electrode portion of the X-axis ITO. It is nicknamed to be located in the electrostatic insulation.

그러나, 상기한 바와 같은 종래의 투 레이어 방식 정전용량 터치스크린은 엇갈리게 겹쳐지는 X축의 정전전극과 Y축의 정전전극 사이로 투영되는 정전절연부가 겹침 구분선을 형성하여 선명도가 저하되어 디스플레이되는 영상의 화질이 저하되고, 정전전극의 겹침과정에 있어서 그 겹침이 정밀하지 않으면 상기 구부선의 굵기 편차가 발생하고 이로 인하여 선명도가 균일하지 않은 문제점이 있었다.However, in the conventional two-layer capacitive touch screen as described above, the capacitive insulator projected between the staggered X-axis electrostatic electrode and the Y-axis electrostatic electrode forms an overlapping line, resulting in deterioration of sharpness and deterioration of image quality of the displayed image. If the overlap is not precise in the overlapping process of the electrostatic electrode, the thickness variation of the bend line may occur, thereby causing a problem in that the sharpness is not uniform.

이에, 본 발명은 투 레이어 방식 정전용량 터치스크린의 제조에 있어서 엇갈 리게 겹쳐지는 정전전극에 의하여 형성되는 겹침 구분선으로 인한 선명도의 저하와 정밀한 겹침이 이루어지지 않으므로 인한 겹침 구분선의 굵기 편차로 인한 전체적인 선명도의 편차가 발생하는 문제점을 해결할 수 있도록 한 것이다.Thus, in the manufacture of the two-layer capacitive touch screen, the sharpness of the overlapping line formed by the overlapping capacitive electrodes overlapped and the sharpness of the overlapping line due to the variation in the thickness of the overlapping line due to the lack of precise overlapping are not achieved. This is to solve the problem that the deviation occurs.

즉, 본 발명은 투 레이어 방식 정전용량 터치스크린에 있어서, ITO필름에 코팅된 ITO도전층을 하나의 이상의 절연 애칭선을 통하여 정전전극과 정전절연부를 등 간격으로 형성한 것이다.That is, in the two-layer capacitive touch screen, the ITO conductive layer coated on the ITO film is formed at equal intervals through the one or more insulating nicking lines.

따라서, 본 발명은 정전전극 사이에 형성되는 정전절연부를 절연 애칭선로 형성함으로써 그 제조에 있어서 엇갈리게 겹쳐지는 정전전극의 겹침 구분선이 애칭되지 않은 정전절연부에 의하여 가려져 선명도가 균일하게 유지되고 정전전극의 엇갈림 겹침 편차에 따른 겹침 구분선의 편차로 인한 전체적인 선명도의 균일성 저하가 방지되는 것이다.Accordingly, the present invention forms an electrostatic insulator formed between the electrostatic electrodes with an insulation nickname line, so that overlapping overlapping lines of the electrostatic electrodes, which are staggered in manufacturing, are covered by an unnicknamed electrostatic insulator to maintain uniform clarity and Deterioration of the uniformity of the overall sharpness due to the deviation of the overlapping line due to the overlap overlap deviation is prevented.

이하, 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.

본 발명은 정전전극을 엇갈리게 겹쳐 제조함에 있어서 선명도가 향상되도록 한 것이다.The present invention is to improve the sharpness in the production of the electrostatic electrode staggered.

즉, 본 발명은 X축의 정전전극을 형성한 X축 ITO와 Y축의 정전전극을 형성한 Y축 ITO를 복층으로 형성하며, ITO에 애칭작업을 통하여 정전전극과 정전절열부를 형성한 투 레이어 방식의 정전용량 터치스크린에 있어서, 정전전극(31)의 형성을 위한 정전절연부(20)를 하나 이상의 절연 애칭선(21)을 통하여 정전전극(31)과 절연되게 형성한 것이다.That is, the present invention forms a two-layered X-axis ITO on which the X-axis electrostatic electrode is formed and a Y-axis ITO on which the Y-axis electrostatic electrode is formed, and forms an electrostatic electrode and an electrostatic insulator by nicking the ITO. In the capacitive touch screen, the electrostatic insulator 20 for forming the electrostatic electrode 31 is formed to be insulated from the electrostatic electrode 31 through one or more insulating nicking lines 21.

여기서, 상기 절연 애칭선(21)은 정전전극(31)으로부터 절연된 정전절연부(20)의 전극이 정전용량을 가지지 않게 다수의 절연 애칭선(21)을 등 간격으로 형성하여 실시함이 바람직한 것이다.Here, the insulating nicking line 21 is preferably formed by forming a plurality of insulating nicking lines 21 at equal intervals so that the electrodes of the electrostatic insulator 20 insulated from the electrostatic electrode 31 do not have capacitance. will be.

한편, 상기 절연 애칭선(21)은 시작점과 끝점이 연결된 다각형으로 형성되는 것으로서, 다각형의 정전전극(31)과 정전전극(31)을 연결하는 브릿지전극(32)을 형성할 수 있게 다이아몬드형상으로 형성되는 것이다.On the other hand, the insulating nickname line 21 is formed as a polygon connected to the start point and the end point, in a diamond shape to form a bridge electrode 32 connecting the electrostatic electrode 31 and the electrostatic electrode 31 of the polygon It is formed.

또한, 상기 절연 애칭선(21)에 의하여 형성되는 정전절연부(20)는 X축 ITO와 Y축 ITO를 겹쳤을 때 각 정전전극(31)이 겹쳐지지 않게 정전전극 보다 넓게 형성하여서 실시함이 바람직한 것이다.In addition, the electrostatic insulator 20 formed by the insulating nickname line 21 is formed by forming a wider than the electrostatic electrode so that each electrostatic electrode 31 does not overlap when the X-axis ITO and the Y-axis ITO overlap. It is preferable.

이하, 본 발명의 제조방법에 대하여 설명하면 다음과 같다.Hereinafter, the manufacturing method of the present invention will be described.

즉, 본 발명은 X축의 정전전극을 형성한 X축 ITO와 Y축의 정전전극을 형성한 Y축 ITO를 복층으로 형성하며, ITO에 애칭작업을 통하여 정전전극과 정전절열부를 형성한 투 레이어 방식의 정전용량 터치스크린의 제조방법에 있어서, ITO필름(11)에 도전성 물질을 형성하여 ITO도전층(12)을 형성하고, 상기 ITO도전층(12)을 선형 애칭작업을 통하여 ITO도전층(12)을 시작점과 끝점이 연결된 절연 애칭선(21)을 등간격으로 형성하여서 정전전극(31)과 정전절연부(20)을 등 간격으로 형성하는 것이다.That is, the present invention forms a two-layered X-axis ITO on which the X-axis electrostatic electrode is formed and a Y-axis ITO on which the Y-axis electrostatic electrode is formed, and forms an electrostatic electrode and an electrostatic insulator by nicking the ITO. In the method of manufacturing a capacitive touch screen, a conductive material is formed on the ITO film 11 to form the ITO conductive layer 12, and the ITO conductive layer 12 is linearly etched to form the ITO conductive layer 12. ) By forming the insulating nickname line 21 connected to the starting point and the end point at equal intervals to form the electrostatic electrode 31 and the electrostatic insulation 20 at equal intervals.

여기서, 상기 선형 애칭작업은 선형 레이져(200)에 의하여 애칭하는 방법과 절연 애칭선(21)를 포토 프린팅한 후 이를 애칭액에서 부식 형성하는 왯애칭 방법 중 어느 하나의 방법을 선택적으로 실시할 수 있는 것이다.Here, the linear nicking operation may be selectively carried out any one of the method of nicking by the linear laser 200 and the wet etching method of photo-printing the insulating nicking line 21 and corrosion formation thereof in the nicking liquid. It is.

이하, 본 발명의 작용에 대하여 설명하면 다음과 같다.Hereinafter, the operation of the present invention will be described.

상기한 바와 같이 X축의 정전전극을 형성한 X축 ITO와 Y축의 정전전극을 형성한 Y축 ITO를 복층으로 형성하며, ITO에 애칭작업을 통하여 정전전극과 정전절열부를 형성한 투 레이어 방식의 정전용량 터치스크린에 있어서, 정전전극(31)의 형성을 위한 정전절연부(20)를 하나 이상의 절연 애칭선(21)을 통하여 정전전극(31)과 절연되게 형성할 수 있게 ITO필름(11)에 도전성 물질을 형성하여 ITO도전층(12)을 형성하고, 상기 ITO도전층(12)을 선형 레이져를 이용한 애칭작업을 통하여 ITO도전층(12)을 시작점과 끝점이 연결된 절연 애칭선(21)을 등간격으로 형성하여서 정전전극(31)과 정전절연부(20)을 등 간격으로 형성하는 방법으로 이루어진 본 발명을 적용하여 터치스크린을 제조하게 되면, X축 ITO와 Y축 ITO를 겹쳤을 때 각 ITO의 정전전극(31)이 엇갈리게 겹쳐짐에 있어서 형성되는 겹침 구분선이 애칭되지 않은 정전절연부(20)에 의하여 가려져서 외부로 드러나지 않아 선명도가 저하되지 않게 되며 그 배열도 X축의 정전전극과 Y축의 정전전극이 겹치지 않고 엇갈린 배열 상태를 유지하게 되는 것이다.As described above, the X-axis ITO on which the X-axis electrostatic electrode is formed and the Y-axis ITO on which the Y-axis electrostatic electrode is formed are formed in multiple layers, and the two-layer type method of forming the electrostatic electrode and the electrostatic insulator by nicking the ITO is performed. In the capacitive touch screen, the ITO film 11 may be formed to be insulated from the electrostatic electrode 31 through one or more insulating nicking lines 21 for forming the electrostatic electrode 31. An insulating nickname line 21 in which an ITO conductive layer 12 is formed by forming a conductive material on the ITO conductive layer 12, and the ITO conductive layer 12 is connected to a start point and an end point through a nicking operation using a linear laser. When the touch screen is manufactured by applying the present invention consisting of a method of forming the electrostatic electrode 31 and the electrostatic insulator 20 at equal intervals at equal intervals, when the X-axis ITO and the Y-axis ITO overlap In the overlapping of the electrostatic electrodes 31 of each ITO The overlapping line formed is hidden by the non-nicknamed electrostatic insulator 20 so as not to be exposed to the outside so that the clarity is not degraded, and the arrangement of the overlapping dividing line and the Y-axis electrostatic electrode do not overlap and maintain a staggered arrangement state. .

따라서, 본 발명은 정전전극 사이에 형성되는 정전절연부를 절연 애칭선로 형성함으로써 그 제조에 있어서 엇갈리게 겹쳐지는 정전전극의 겹침 구분선이 애칭되지 않은 정전절연부에 의하여 가려져 선명도가 균일하게 유지되고 정전전극의 엇갈림 겹침 편차에 따른 겹침 구분선의 편차로 인한 전체적인 선명도의 균일성 저하가 방지되는 것이다.Accordingly, the present invention forms an electrostatic insulator formed between the electrostatic electrodes with an insulation nickname line, so that overlapping overlapping lines of the electrostatic electrodes, which are staggered in manufacturing, are covered by an unnicknamed electrostatic insulator to maintain uniform clarity and Deterioration of the uniformity of the overall sharpness due to the deviation of the overlapping line due to the overlap overlap deviation is prevented.

도 1 은 본 발명에 따른 일 실시 예를 보인 ITO 사시도.1 is a perspective view of the ITO showing an embodiment according to the present invention.

도 2 는 본 발명에 따른 일 실시 예를 보인 상세 사시도.Figure 2 is a detailed perspective view showing an embodiment according to the present invention.

도 3 은 본 발명에 따른 제조공정도.Figure 3 is a manufacturing process according to the present invention.

11 : ITO필름 12 : ITO도전층11: ITO film 12: ITO conductive layer

20 : 정전절연부 21 : 절연 애칭선20: electrostatic insulator 21: insulation nickname wire

31 : 정전전극 32 : 브릿지전극31: electrostatic electrode 32: bridge electrode

200 : 선형레이져200: linear laser

Claims (5)

X축의 정전전극을 형성한 X축 ITO와 Y축의 정전전극을 형성한 Y축 ITO를 복층으로 형성하며, ITO에 애칭작업을 통하여 정전전극과 정전절열부를 형성한 투 레이어 방식의 정전용량 터치스크린에 있어서; Two-layer capacitive touch screen with X-axis ITO with X-axis electrostatic electrode and Y-axis ITO with Y-axis electrostatic electrode formed in multiple layers, and electrostatic electrode and electrostatic insulator formed through nicking work on ITO To; 상기 정전전극(31)의 형성을 위한 정전절연부(20)를 하나 이상의 절연 애칭선(21)을 통하여 정전전극(31)과 절연되게 형성한 것을 특징으로 하는 투 레이어 방식 정전용량 터치스크린.Two-layer capacitive touch screen, characterized in that the electrostatic insulator (20) for the formation of the electrostatic electrode (31) is formed to be insulated from the electrostatic electrode (31) through one or more insulating nicking line (21). 제 1 항에 있어서;The method of claim 1; 상기 절연 애칭선(21)은 정전전극(31)으로부터 절연된 정전절연부(20)의 전극이 정전용량을 가지지 않게 다수의 절연 애칭선(21)을 등 간격으로 형성한 것을 특징으로 하는 투 레이어 방식 정전용량 터치스크린.The insulating nicking line 21 is a two-layered layer formed by forming a plurality of insulating nicking lines 21 at equal intervals such that the electrodes of the electrostatic insulator 20 insulated from the electrostatic electrode 31 do not have capacitance. Antistatic capacitive touch screen. 제 1 항 또는 제 2 항에 있어서;The method of claim 1 or 2; 상기 절연 애칭선(21)은 시작점과 끝점이 연결된 다각형으로 형성하고, 다각형의 정전전극(31)과 정전전극(31)을 연결하는 브릿지전극(32)을 형성하며,The insulating nickname line 21 is formed as a polygon connected to the start point and the end point, and forms a bridge electrode 32 connecting the electrostatic electrode 31 and the electrostatic electrode 31 of the polygon, 상기 절연 애칭선(21)에 의하여 형성되는 정전절연부(20)는 X축 ITO와 Y축 ITO를 겹쳤을 때 각 정전전극(31) 겹쳐지지 않게 정전전극 보다 넓게 형성한 것을 특징으로 하는 투 레이어 방식 정전용량 터치스크린.The electrostatic insulator 20 formed by the insulation nicking line 21 is formed to be wider than the electrostatic electrode so as not to overlap each of the electrostatic electrodes 31 when the X-axis ITO and the Y-axis ITO overlap. Antistatic capacitive touch screen. X축의 정전전극을 형성한 X축 ITO와 Y축의 정전전극을 형성한 Y축 ITO를 복층으로 형성하며, ITO에 애칭작업을 통하여 정전전극과 정전절열부를 형성한 투 레이어 방식의 정전용량 터치스크린의 제조방법에 있어서;Two-layer capacitive touch screen with X-axis ITO with X-axis electrostatic electrode and Y-axis ITO with Y-axis electrostatic electrode formed in multiple layers, and electrostatic electrode and electrostatic insulator formed through nicking work on ITO In the manufacturing method of; 상기 ITO필름(11)에 도전성 물질을 형성하여 ITO도전층(12)을 형성하고, 상기 ITO도전층(12)을 선형 애칭작업을 통하여 ITO도전층(12)을 시작점과 끝점이 연결된 절연 애칭선(21)을 등간격으로 형성하여서 정전전극(31)과 정전절연부(20)을 등 간격으로 형성한 것을 특징으로 하는 투 레이어 방식 정전용량 터치스크린의 제조방법.Insulating nickname lines in which an ITO conductive layer 12 is formed by forming a conductive material on the ITO film 11 and the ITO conductive layer 12 is connected to a start point and an end point by linearly etching the ITO conductive layer 12. A method of manufacturing a two-layer capacitive touch screen, characterized in that the electrostatic electrode 31 and the electrostatic insulator 20 are formed at equal intervals by forming 21 at equal intervals. 제 4 항에 있어서;The method of claim 4; 상기 선형 애칭작업은 선형 레이져(200)에 의하여 애칭 작업을 하는 방법과 절연 애칭선(21)를 포토 프린팅한 후 이를 애칭액에서 부식 형성하는 왯애칭 방법 중 어느 하나의 방법을 선택적으로 적용한 것을 특징으로 하는 투 레이어 방식 정전용량 터치스크린의 제조방법.The linear nicking operation is characterized by selectively applying any one of the method of nicking by the linear laser 200 and the quenching method of photo-printing the insulating nicking line 21 and then corrosion formation in the nicking liquid. Method of manufacturing a two-layer capacitive touch screen.
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