KR20140078332A - Touch panel with pad electrode having insulation layer - Google Patents

Touch panel with pad electrode having insulation layer Download PDF

Info

Publication number
KR20140078332A
KR20140078332A KR1020120147595A KR20120147595A KR20140078332A KR 20140078332 A KR20140078332 A KR 20140078332A KR 1020120147595 A KR1020120147595 A KR 1020120147595A KR 20120147595 A KR20120147595 A KR 20120147595A KR 20140078332 A KR20140078332 A KR 20140078332A
Authority
KR
South Korea
Prior art keywords
pad electrode
sensor unit
driving unit
driving
substrate
Prior art date
Application number
KR1020120147595A
Other languages
Korean (ko)
Inventor
김근호
김현수
김진서
이재영
Original Assignee
(주)인터플렉스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)인터플렉스 filed Critical (주)인터플렉스
Priority to KR1020120147595A priority Critical patent/KR20140078332A/en
Priority to PCT/KR2013/010100 priority patent/WO2014073896A1/en
Publication of KR20140078332A publication Critical patent/KR20140078332A/en

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports

Landscapes

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

Abstract

A sensor unit including a plurality of sensor electrodes and pad electrodes formed on a substrate; And a driving unit electrically connected to the sensor unit, wherein the pad electrode comprises: a conductive layer formed on the substrate; And an insulating layer formed on the conductive layer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch panel including a pad electrode having an insulating layer,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel, and more particularly, to a touch panel including a pad electrode having an insulating layer for enhancing the reliability of the pad electrode and improving the productivity of the pad electrode by forming an insulating layer.

A touch panel is a device for inputting coordinate data by touching the surface of a display panel provided in an electronic device such as a smart phone, a tablet computer, a game machine, a learning assisting device, and a camera with a hand or a pen. Such a touch panel is widely used because it is easy to operate and widely applicable to various display devices.

Generally, the touch panel includes a sensor electrode provided on a substrate made of a light transmitting material, and a pad electrode to which the sensor electrode is connected.

The pad electrode is connected to the sensor electrode and connects the touch panel to another driving means. An adhesive film is used to connect the pad electrode and another driving means, and an anisotropic conductive film (ACF) is generally used. The anisotropic conductive film is a typical material widely used for semiconductor mounting with an adhesive and energizing material. There has been a problem in that productivity is lowered by adding a process of insulating the pad electrode to prevent corrosion of a portion of the pad electrode exposed to the outside after connecting the pad electrode and the other driving means using the anisotropic conductive film .

Accordingly, the present invention proposes a touch panel which improves the reliability of the pad electrode and improves the productivity without any additional process after pressing the adhesive film.

According to an embodiment of the present invention, there is provided a sensor comprising: a sensor unit including a plurality of sensor electrodes and a pad electrode formed on a substrate; And a driving unit electrically connected to the sensor unit, wherein the pad electrode comprises: a conductive layer formed on the substrate; And an insulating layer formed on the conductive layer.

According to an embodiment of the present invention, the sensor unit and the driving unit may be connected via an adhesive film.

According to one embodiment of the present invention, the adhesive film comprises an adhesive matrix; And conductive particles dispersed in the adhesive matrix.

According to an embodiment of the present invention, the adhesive mattress may include any one of an acrylic pressure sensitive adhesive, a silicone pressure sensitive adhesive, a urethane pressure sensitive adhesive, and a rubber pressure sensitive adhesive.

According to an embodiment of the present invention, the conductive particles may include any one of Cu, Ni, Co, Au, Ag, Cr, Pd, and alloys thereof.

According to an embodiment of the present invention, the conductive particles may have an average diameter of 5 to 500 mu m.

According to an embodiment of the present invention, the driving unit may include a flexible printed circuit board (FPCB).

According to an embodiment of the present invention, there is provided a method of manufacturing a sensor, comprising: preparing a sensor unit including a plurality of sensor electrodes formed on a substrate; Forming a pad electrode including an insulating layer on the substrate; Preparing a driving unit electrically connected to the sensor unit; Disposing an adhesive film between the sensor unit and the driving unit; Attaching the sensor unit, the adhesive film, and the driving unit; And pressing the attached sensor unit, the adhesive film, and the driving unit.

The touch panel according to an embodiment of the present invention can prevent the corrosion of the pad electrode and improve the electrical conductivity of the pad electrode. Further, the pad electrode can be driven without coating the insulating film.

1 is a view showing a process of combining a sensor unit and a driving unit according to an embodiment of the present invention.
2 is a cross-sectional view of a pad electrode according to an embodiment of the present invention.
3 is a cross-sectional view of a pad electrode, a pressure-sensitive adhesive film, and a driving unit according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view of a pad electrode, a pressure-sensitive adhesive film, and a driving unit after compression according to an embodiment of the present invention.
5 is a cross-sectional view of part A shown in FIG. 4 according to another embodiment of the present invention.

Hereinafter, examples of the present invention will be described in more detail with reference to specific drawings. However, the scope of the present invention is not limited to the embodiments and drawings described below. Various equivalents and modifications may be made from the embodiments described in the following description and the drawings.

The terminologies used herein are terms used to describe embodiments of the present invention, which may vary depending on the user, the intention of the operator, or the practice of the field to which the present invention belongs. Therefore, the definition of these terms should be based on the contents throughout this specification.

For reference, in order to facilitate understanding, each component and its shape or the like are briefly drawn or exaggerated in the above drawings. The same reference numerals denote the same elements in the drawings.

It will also be understood that where a layer or element is described as being on the " top " of another layer or element, it is to be understood that not only is the layer or element disposed in direct contact with the other layer or element, To the case where the third layer is disposed interposed between the first and second layers.

1 is a view showing a process of combining a sensor unit and a driving unit according to an embodiment of the present invention. The touch panel 100 according to an exemplary embodiment of the present invention includes a sensor unit 200 and a driver 300.

The sensor unit 200 includes a substrate 210, a sensor electrode 220 and a pad electrode 230 and the sensor electrode 220 and the pad electrode 230 are formed on the substrate 210.

The driving unit 300 includes a driving substrate 310, a driving circuit 320 and a driving electrode 330 and is electrically connected to the sensor unit 200.

The driving unit 300 may include an FPCB (Flexible Printed Circuit Board).

Referring to FIG. 1, the sensor unit 200 and the driving unit 300 are connected to each other through the pad electrode 230 and the driving electrode 330. The driving unit 300 is positioned near the sensor unit 200 and then the driving unit 300 is rotated 180 degrees to press the pad electrode 230 and the driving electrode 300. The sensor electrode 220 contacts the pad electrode 230 And the driving electrode 330. The driving circuit 330 is connected to the driving circuit 330 and the driving circuit 330, respectively.

Although the shape of the sensor electrode 220, the pad electrode 230, and the driving electrode 330 is shown as a rectangle in FIG. 1, the sensor electrode 220, the pad electrode 230, and the driving electrode 330 are not necessarily rectangular but may be formed in various shapes such as a triangle, The number and size of the sensor electrode 220, the pad electrode 230 and the driving electrode 330 may vary depending on the resolution of the touch panel 100 and the type and size of the display to which the touch panel is applied.

2 is a cross-sectional view of a pad electrode according to an embodiment of the present invention. Referring to FIG. 2, the pad electrode 230 includes a conductor layer 231 and an insulating layer 232. The pad electrode 230 is formed on the substrate 210.

The conductive layer 231 is formed on the substrate 210, and may be formed of a transparent conductive oxide layer, a metal layer, or a combination thereof.

The transparent conductive oxide layer may be formed on the substrate 210 using any one of a spin coating process, a printing process, a sputtering process, a chemical vapor deposition process, an atomic layer deposition process, and a vacuum deposition process.

The transparent conductive oxide layer may include any one of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), AZO (Al-doped ZnO), and TCO (Transparent conductive oxide).

The metal layer may be formed on the substrate 210 or on the transparent conductive oxide layer using any one of a spin coating process, a printing process, a sputtering process, a chemical vapor deposition process, an atomic layer deposition process, and a vacuum deposition process .

The insulating layer 232 is formed on the conductive layer 231 to prevent corrosion of the pad electrode 230. Also, the pad electrode 230 can withstand the temperature change through the insulating layer 232 and the reliability is improved. Since the pad electrode 230 including the insulating layer 232 is formed before the sensor unit 200 and the driving unit 300 are pressed together, a separate additional process is not required after the pressing, and the productivity of the touch panel 100 .

3 is a cross-sectional view of a pad electrode, a pressure-sensitive adhesive film, and a driving unit according to an embodiment of the present invention. The adhesive film 400 includes an adhesive matrix 410 and conductive particles 420. The sensor unit 200 and the driving unit 300 are connected via the adhesive film 400. [

The adhesive matrix 410 may include any one of an acrylic pressure sensitive adhesive, a silicone pressure sensitive adhesive, a urethane pressure sensitive adhesive, and a rubber pressure sensitive adhesive.

The conductive particles 420 are dispersed in the adhesive matrix 410 and serve as a medium for electrically connecting the pad electrode 230 and the driving electrode 330.

The conductive particles 420 may include any one of Cu, Ni, Co, Au, Ag, Cr, Pd and their alloys and may have an average diameter of 5 to 500 μm.

FIG. 4 is a cross-sectional view of a pad electrode, a pressure-sensitive adhesive film, and a driving unit after compression according to an embodiment of the present invention. Referring to FIG. 4, the pad electrode 230 and the driving electrode 330 are bonded to each other through the adhesive film 400 and are electrically connected to each other.

The adhesive matrix 410 contacts and adheres to the substrate 210, the pad electrode 230, the driving substrate 310, and the driving electrode 330.

A part of the conductive particles 420 directly contact the pad electrode 230 and the driving electrode 330 in a compressed state and electrically connect the pad electrode 230 and the driving electrode 330. A part of the conductive particles 420 may be buried in the insulating layer 232 of the pad electrode 230. The remaining conductive particles 420 are still dispersed in the adhesive matrix 410.

5 is a cross-sectional view of part A shown in FIG. 4 according to another embodiment of the present invention. Referring to FIG. 5, the conductive particles 420 are pressed between the insulating layer 232 and the driving electrode 330. 4, the conductive particles 420 may have various sizes, and conductive particles 420 of various sizes may be pressed between the pad electrode 230 and the driving electrode 330. Since the insulating layer 232 is formed to have a thickness of about 0.05 to 0.3 탆, the conductive particles 420 are free from contact with the conductive layer 231, and the conductive layer 231 and the driving electrode 330 are electrically .

Hereinafter, a method of manufacturing a touch panel according to an example of the present invention will be described. The manufacturing method of the touch panel will be described step by step with reference to the drawings.

First, a plurality of sensor electrodes 220 are formed on a substrate 210, and a sensor unit 200 is prepared.

Next, a pad electrode 230 including an insulating layer 231 is formed on the substrate 210. For example, a conductor layer 231 is formed on the substrate 210, and the insulating layer 231 is formed on the conductor layer 231.

And a driving unit 300 electrically connected to the sensor unit 200 is prepared. For example, a driving circuit 320 is formed on the driving substrate 310, and a driving electrode 330 connected to the driving circuit 320 is formed on the driving substrate 310.

An adhesive film 400 is disposed between the sensor unit 200 and the driving unit 300.

Then, the sensor unit 200, the adhesive film 400, and the driving unit 300 are attached.

Then, the attached sensor unit 200, the adhesive film 400, and the driving unit 300 are squeezed.

Through the above process, the sensor unit 200 and the driving unit 300 are electrically connected to each other, and the pad electrode 230 including the insulating layer 232 can produce the touch panel 100 without additional insulation coating process .

The embodiments of the touch panel described above are merely illustrative, and the scope of protection of the present invention may include various modifications and equivalents as long as those skilled in the art can understand the present invention.

100: Touch panel
200: sensor unit 210: substrate
220: sensor electrode 230: pad electrode
231: conductor layer 232: insulating layer
300: driving part 310: driving substrate
320: driving circuit 330: driving electrode
400: Adhesive film 410: Adhesive matrix
420: conductive particles

Claims (8)

A sensor unit including a plurality of sensor electrodes and pad electrodes formed on a substrate; And
And a driving unit electrically connected to the sensor unit,
Wherein the pad electrode comprises:
A conductor layer formed on the substrate; And
An insulating layer formed on the conductor layer;
And a touch panel. The method according to claim 1,
Wherein the sensor unit and the driving unit are connected via an adhesive film. 3. The method of claim 2,
The above-
Adhesive matrix; And
Conductive particles dispersed in the adhesive matrix;
And a touch panel. The method of claim 3,
Wherein the adhesive mattress comprises any one of an acrylic pressure sensitive adhesive, a silicone pressure sensitive adhesive, a urethane pressure sensitive adhesive and a rubber pressure sensitive adhesive. The method of claim 3,
Wherein the conductive particles comprise at least one of Cu, Ni, Co, Au, Ag, Cr, Pd, and alloys thereof. The method of claim 3,
Wherein the conductive particles have an average diameter of 5 to 500 mu m. The method according to claim 1,
Wherein the driving unit includes an FPCB (Flexible Printed Circuit Board). Preparing a sensor unit including a plurality of sensor electrodes formed on a substrate;
Forming a pad electrode including an insulating layer on the substrate;
Preparing a driving unit electrically connected to the sensor unit;
Disposing an adhesive film between the sensor unit and the driving unit;
Attaching the sensor unit, the adhesive film, and the driving unit; And
And pressing the attached sensor unit, the adhesive film, and the driving unit.
KR1020120147595A 2012-11-08 2012-12-17 Touch panel with pad electrode having insulation layer KR20140078332A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020120147595A KR20140078332A (en) 2012-12-17 2012-12-17 Touch panel with pad electrode having insulation layer
PCT/KR2013/010100 WO2014073896A1 (en) 2012-11-08 2013-11-08 Touch panel comprising pad electrode having protective layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120147595A KR20140078332A (en) 2012-12-17 2012-12-17 Touch panel with pad electrode having insulation layer

Publications (1)

Publication Number Publication Date
KR20140078332A true KR20140078332A (en) 2014-06-25

Family

ID=51129967

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120147595A KR20140078332A (en) 2012-11-08 2012-12-17 Touch panel with pad electrode having insulation layer

Country Status (1)

Country Link
KR (1) KR20140078332A (en)

Similar Documents

Publication Publication Date Title
US9552101B2 (en) Touch screen assembly
CN105390526B (en) It is integrated with the flexible oganic light-emitting display device of In-cell touch panel
CN102405457B (en) Touch actuated sensor configuration integrated with an OLED structure
US8717330B2 (en) Flexible projective capacitive touch sensor structure
US20150110953A1 (en) Touch panel, method for manufacturing the same, and liquid crystal display device including the touch panel
CN105260058A (en) Electrode sheet for pressure detection and touch input device including the same
US10331245B2 (en) Touch panels and fabrication methods thereof
CN110837309A (en) Touch module and manufacturing method thereof
US9454275B2 (en) Touch panel
GB2521669A (en) An apparatus for a touch sensor structure
CN203658984U (en) Display device
JP6236186B1 (en) Touch input device
KR20120027997A (en) Method of manufacturing capacitive type touch panel
CN103052932A (en) Capacitative touch sensor and capacitative touch panel integerated into a window panel and including same
CN101561728A (en) Wire contact structure and touch panel using same
JP2018073246A (en) Display apparatus
KR102187925B1 (en) Touch panel
US20150145809A1 (en) Touch sensor module and manufacturing method thereof
KR20140078332A (en) Touch panel with pad electrode having insulation layer
CN105094407A (en) Touch display panel and touch display device
KR20150036901A (en) Touch window and display with the same
KR20150089363A (en) Capacitive force sensing system using conventional capacitive touch layers
CN103677368A (en) Connected structure formed by touch panel and flexible printed circuit board
KR20170124323A (en) Touch panel module
CN108139829A (en) Electrode connection unit and the touch screen panel for including it

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal