KR20140127640A - Touch Panel Module - Google Patents

Touch Panel Module Download PDF

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Publication number
KR20140127640A
KR20140127640A KR20130046228A KR20130046228A KR20140127640A KR 20140127640 A KR20140127640 A KR 20140127640A KR 20130046228 A KR20130046228 A KR 20130046228A KR 20130046228 A KR20130046228 A KR 20130046228A KR 20140127640 A KR20140127640 A KR 20140127640A
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KR
South Korea
Prior art keywords
pad
conductive ball
terminal portion
touch panel
conductive
Prior art date
Application number
KR20130046228A
Other languages
Korean (ko)
Inventor
송하윤
김영재
박호준
Original Assignee
삼성전기주식회사
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.)
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Publication date
Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR20130046228A priority Critical patent/KR20140127640A/en
Publication of KR20140127640A publication Critical patent/KR20140127640A/en

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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

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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 touch panel module according to an embodiment of the present invention includes a transparent substrate; An electrode wiring including an AG pad electrically connected to an electrode pattern formed on a transparent substrate; An ACF layer having one end abutting the AG pad surface and having a conductive ball; A conductive ball disposed on the other end of the ACF layer and including an FPCB having an electrode pattern and an electrode wiring and a terminal portion receiving an ACF electrical signal, the conductive ball being electrically connected to the AG pad and the terminal portion, Module.

Description

A touch panel module {Touch Panel Module}

The present invention relates to a touch panel module.

With the development of computers using digital technology, auxiliary devices of computers are being developed together. Personal computers, portable transmission devices, and other personal information processing devices use various input devices such as a keyboard and a mouse And performs text and graphics processing.

However, as the use of computers is gradually increasing due to the rapid progress of the information society, there is a problem that it is difficult to efficiently operate a product by using only a keyboard and a mouse which are currently playing an input device. Therefore, there is an increasing need for a device that is simple and less error-prone, and that allows anyone to easily input information.

In addition, the technology related to the input device is shifting beyond the level that satisfies the general functions, such as high reliability, durability, innovation, design and processing related technology, etc. In order to achieve this purpose, As a possible input device, a touch panel has been developed.

Such a touch panel is installed on the display surface of a display such as an electronic notebook, a flat panel display device such as a liquid crystal display device (LCD), a plasma display panel (PDP), and an el (electroluminescence) and a cathode ray tube And is a tool used to allow the user to select desired information while viewing the display.

In addition, the types of touch panels include resistive type, capacitive type, electro-magnetic type, SAW (Surface Acoustic Wave Type) and Infrared Type).

These various types of touch panels are employed in electronic products in consideration of problems of signal amplification, differences in resolution, difficulty in design and processing technology, optical characteristics, electrical characteristics, mechanical characteristics, environmental characteristics, input characteristics, durability and economical efficiency Currently, the most widely used methods are resistive touch panels and capacitive touch panels.

As one specific example of the touch panel according to the related art, an example of the touch panel disclosed in Korean Patent Laid-open No. 10-2011-0107590 is exemplified.

The structure of the touch panel disclosed in the above description of the prior art includes a substrate, electrodes formed on the substrate, electrode wirings extending from the electrodes and gathered to one end of the substrate, And a controller connected through a flexible printed circuit board (FPCB).

Here, the FPCB transmits a signal generated at the electrode to the control unit via the electrode wiring. At this time, the FPCB is electrically connected to the electrode wiring in order to transmit a signal. However, the FPCB and the electrode wiring frequently have poor connection, and the reliability of the product is deteriorated due to frequent connection failure.

KR 10-2011-0107590 A

SUMMARY OF THE INVENTION The present invention provides a touch panel module that improves the reliability of a product according to a connection defect rate when a touch panel and an FPCB are connected.

A touch panel module according to an embodiment of the present invention includes a transparent substrate; An electrode pad including an AG pad electrically connected to an electrode pattern formed on the transparent substrate; An ACF layer having one end abutting against the surface of the AG pad and having a conductive ball; And an FPCB disposed at the other end of the ACF layer and including a terminal portion for receiving the electrode pattern, the electrode wiring, and the ACF electrical signal. The conductive ball contacts both the AG pad and the terminal portion, To the touch panel module.

In the touch panel module according to an embodiment of the present invention, at least one groove is formed in the AG pad in order to accommodate the conductive ball.

In the touch panel module according to an embodiment of the present invention, the diameter of the groove formed in the AG pad is larger than the diameter of the conductive ball.

In the touch panel module according to an embodiment of the present invention, at least one groove is formed in the terminal portion to accommodate the conductive ball.

In the touch panel module according to an embodiment of the present invention, the diameter of the groove formed in the terminal portion is larger than the diameter of the conductive ball.

In the touch panel module according to an embodiment of the present invention, at least one groove is formed in the AG pad and the terminal portion to accommodate the conductive ball.

In the touch panel module according to an embodiment of the present invention, the diameter of the groove formed in the AG pad and the terminal portion may be larger than the diameter of the conductive ball.

In the touch panel module according to an embodiment of the present invention, the conductive balls use nickel, carbon, and solder balls.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, by forming a plurality of grooves for accommodating the conductive balls in the AG pad, the electrical energization is improved.

Further, by forming a plurality of grooves for accommodating the conductive balls on the AG pad, the electrical reliability of the product is improved.

Further, by forming a plurality of grooves for receiving the conductive balls in the AG pad, the conductive balls are inserted into the plurality of grooves by a specific pressure, thereby improving the reliability.

In addition, by forming a plurality of grooves for accommodating the conductive balls in the AG pad, adhesion failure between the ACF layer and the substrate and the FPCB and lifting phenomenon are improved.

In addition, by forming a plurality of grooves for accommodating the conductive balls in the AG pad, the adhesion between the ACF layer and the substrate and the FBPC can be improved, thereby improving the operability of the touch panel and the reliability of the driving.

Further, by forming a plurality of grooves for accommodating the conductive balls in the AG pad, the ACF balls are in contact with the grooves and the contact area is kept wider.

In addition, by increasing the contact area of the ACF ball, the reliability of electrical energization is improved.

1 is an assembled view of a touch panel according to an embodiment of the present invention;
2 is a perspective view of a touch panel according to an embodiment of the present invention;
3 is an enlarged view of A in Fig.
4 is a perspective view of an AG pad according to one embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "one side,"" first, ""first,"" second, "and the like are used to distinguish one element from another, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

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

2 is a perspective view of a touch panel module according to an embodiment of the present invention, FIG. 3 is an enlarged view of a portion A of FIG. 2, and FIG. 4 is a perspective view of a touch panel module according to an embodiment of the present invention. Figure 2 is a perspective view of an AG pad according to one embodiment of the present invention.

A touch panel module according to an embodiment of the present invention includes an electrode wiring 16 having a transparent substrate 10 and an AG pad 14 electrically connected to an electrode pattern 12 formed on a transparent substrate 10, One end of the ACF layer 20 is disposed at the other end of the ACF layer 20 and contacts the surface of the AG pad 14 and is provided with the conductive balls 22. The electrode pattern 12 and the electrode wires 16, And an FPCB 30 having a terminal portion 32 for receiving an electric signal via the antenna 20.

1 and 2, the transparent substrate 10 is not particularly limited as long as it is a material having a predetermined strength or more. However, the transparent substrate 10 may be made of polyethylene terephthalate (PET), polycarbonate (PC), polymethylmethacrylate (PMMA) , Polyethylene naphthalate (PEN), polyether sulfone (PES), cyclic olefin polymer (COC), TAC (Triacetylcellulose) film, polyvinyl alcohol (PVA) film, polyimide (PS), biaxially oriented PS (BPS) containing biaxially oriented polystyrene, glass or tempered glass, or the like. Since a transparent electrode may be formed on one surface of the transparent substrate 10, a high frequency treatment or a primer treatment may be applied to one surface of the transparent substrate 10 in order to improve the adhesion between the transparent substrate 10 and the transparent electrode To form a surface treatment layer.

The electrode pattern 12 plays a role of enabling a user to recognize a touch coordinate by generating a signal upon touch. The electrode pattern 12 can be formed by a plating process or a deposition process using a sputtering process. The electrode pattern 12 may be formed of a metal formed by exposing / developing the silver salt emulsion layer, and various kinds of materials capable of forming a mesh pattern with a conductive metal may be selected. Do. The electrode pattern 12 may be formed in any pattern known in the art, such as a rhombic pattern, a square pattern, a triangular pattern, and a circular pattern.

1 and 2, the electrode pattern 12 may be formed in a bar pattern. Are electrically insulated from the plurality of bar patterns of the electrode pattern (12). The electrode pattern 12 may be formed as a conductive pattern, and the shape thereof is formed in the same mesh pattern as the conductive pattern described above. The electrode patterns 12 should be formed so as to be electrically insulated from each other between the electrode patterns 12 (see FIG. 1B) So that the device including the touch panel can be driven by calculating the criminal value to which the touch at the touch input is inputted.

The electrode pattern 12 may be touch-driven by a mutual type touch panel in which a bar pattern orthogonal to the unidirectional bar pattern is formed on the transparent substrate 10 and the both substrates are coupled. In addition, the electrode pattern 12 is formed on one transparent substrate 10 by arranging crossing patterns of diamond or the like orthogonal to each other using a bridge, which is an insulating material, on one surface of the transparent substrate 10 to realize a touch panel It would be possible.

The electrode wiring 16 allows electric signals to be transmitted to the electrode pattern 12 and the FPCB 30 described above. The electrode wiring can be formed on the transparent substrate 10 by various printing methods such as a silk screen method, a lybia printing method, or an inkjet printing method. As the material of the electrode wiring 16, copper (Cu), aluminum (Al), gold (Au), silver (Ag), titanium (Ti), palladium (Pd), and chromium (Cr) The electrode wiring 16 may be an AG paste or organic silver having excellent electrical conductivity. However, the present invention is not limited to this example, and may be made of a low-resistance metal material such as a conductive polymer, carbon black (including CNT), metal oxides such as ITO, and metals.

1 and 2, the electrode wiring 16 is connected to both ends of the electrode pattern 12, but this is an example and can be connected to only one end of the electrode pattern 12 according to the method of the touch panel 1 Of course. An AG pad 14 electrically connected to the FPCB 30 is disposed at a distal end portion of the electrode wiring 12. In other words, the AG pad 14 is formed on a part of the electrode wiring 12 and electrically connected to the FPCB 30.

Referring to FIGS. 3 and 4, the AG pad 14 is formed on the transparent substrate 10. The AG pad 14 is disposed so as to be in contact with the ACF layer 20 so as to energize the FPCB 30. The AG pad 14 is formed such that the FPCB 30 does not penetrate the active area of the transparent substrate 10, that is, the area where the electrode pattern 12 is formed to recognize the user's touch. It is preferable that the AG pad 14 is located at one end of the transparent substrate 10. The AG pad 14 is in contact with and adheres to the ACF layer 20.

Referring to FIG. 4, the AG pad 14 has a plurality of holes (grooves). The plurality of holes (grooves) of the AG pad 14 are micro-hole-formed so that the ACF conductive balls or other conductive balls enter into the holes. At this time, the ACF conductive balls or other conductive balls are inserted into the holes of the AG pad 14 to form a large contact area. The contact area between the AG pad 14 hole and the ACF conductive ball or other conductive ball 22 is increased and the electrical characteristics are improved. In addition, as the contact area between the hole of the AG pad 14 and the ACF conductive ball or other conductive ball 22 increases, the reliability of the product and the adhering failure phenomenon are improved. The AG pad 14 has a large contact area with the ACF conductive balls or other conductive balls housed therein. At this time, if the contact area is increased, the electric energizing effect is also increased. That is, the reliability of the product is improved.

It is preferable that the hole (groove) of the AG pad 14 is formed to be larger than the diameter of the conductive ball 22. It is preferable that the hole of the AG pad 14 is formed to be twice as large as the diameter of the conductive ball 22 so that the conductive ball 22 can be easily received therein. The AG pad 14 holes (grooves) electrically conduct the conductive balls 22 in one direction.

The ACF layer 20 contacts the AG pad 14 and is electrically connected. One end of the ACF layer 20 is in contact with the AG pad 14 and the other end thereof is in contact with the terminal portion 32. The ACF layer is preferably formed of an anisotropic conductive film (ACF). In some cases, it may be made of a conductive material such as an anisotropic conductive adhesive (ACA) or the like. The ACF layer 20 has conductive balls 22 disposed therein. The conductive ball 22 is inserted into the groove of the AG pad 14 to energize electricity in one direction. The conductive ball 22 is inserted into the groove of the AG pad 14 and bonded.

The conductive ball 22 is inserted into the groove of the AG pad 14 to conduct electricity while maintaining a large area. In some cases, at least one of the conductive balls 22 is inserted into the groove of the AG pad 14.

The FPCB 30 includes a terminal portion 32 in contact with the ACF layer 20. The FPCB 30 is electrically connected to the AG pad 14 to electrically connect the electrode pattern 12 and a control unit (not shown). The terminal portion 32 is in contact with and electrically connected to the conductive ball 22. The terminal portion 32 may be formed with a plurality of holes. The plurality of holes of the terminal portion 32 are preferably formed at positions corresponding to the plurality of holes formed in the AG pad 14. [ This is to minimize the defect rate by maximizing the contact area of the conductive balls 22 at the time of electrical conduction. The hole of the terminal portion 32 accommodates the conductive ball 22 to increase the contact area, thereby improving the electrical reliability. It is preferable that the groove of the terminal portion 14 is formed larger than the diameter of the conductive ball 22. [ It is preferable that the groove diameter of the terminal portion 14 is formed to be two times or more larger than the diameter of the conductive ball 22. [ The terminal portion 14 is formed so that the tubular electrode pattern 12 is made of a material such as copper (Cu), aluminum (Al), gold (Au), silver (Ag), titanium (Ti), palladium (Pd) use.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It will be apparent that modifications and improvements can be made by those skilled in the art.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Touch panel
10: transparent substrate, window substrate 12: electrode pattern
14: AG pad 16: electrode wiring
20: ACF layer 22: conductive ball
30: FPCB 32: terminal portion

Claims (8)

A transparent substrate;
An electrode pad including an AG pad electrically connected to an electrode pattern formed on the transparent substrate;
An ACF layer having one end abutting against the surface of the AG pad and having a conductive ball;
And an FPCB disposed at the other end of the ACF layer and including a terminal portion for receiving the electrode pattern and the electrode wiring and the ACF electrical signal.
The conductive ball is electrically connected to both the AG pad and the terminal portion by pressure,
Touch panel module.
The method according to claim 1,
Wherein at least one groove is formed in the AG pad to receive the conductive ball.
The method of claim 2,
Wherein a diameter of a groove formed in the AG pad is larger than a diameter of the conductive ball.
The method according to claim 1,
Wherein at least one groove is formed in the terminal portion to accommodate the conductive ball.
The method of claim 4,
And the diameter of the groove formed in the terminal portion is larger than the diameter of the conductive ball.
The method according to claim 1,
Wherein at least one groove is formed in the AG pad and the terminal portion to accommodate the conductive ball.
The method of claim 6,
Wherein the diameter of the groove formed in the AG pad and the terminal portion is larger than the diameter of the conductive ball.
The method according to claim 1,
Wherein the conductive balls use nickel, carbon, and solder balls.
KR20130046228A 2013-04-25 2013-04-25 Touch Panel Module KR20140127640A (en)

Priority Applications (1)

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KR20130046228A KR20140127640A (en) 2013-04-25 2013-04-25 Touch Panel Module

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Application Number Priority Date Filing Date Title
KR20130046228A KR20140127640A (en) 2013-04-25 2013-04-25 Touch Panel Module

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106959793A (en) * 2016-01-12 2017-07-18 三星显示有限公司 Display device and the method for manufacturing the display device
KR20210114789A (en) 2020-03-11 2021-09-24 동우 화인켐 주식회사 Touch sensor module and image display device including the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106959793A (en) * 2016-01-12 2017-07-18 三星显示有限公司 Display device and the method for manufacturing the display device
CN106959793B (en) * 2016-01-12 2021-09-21 三星显示有限公司 Display device and method of manufacturing the same
KR20210114789A (en) 2020-03-11 2021-09-24 동우 화인켐 주식회사 Touch sensor module and image display device including the same
US11445615B2 (en) 2020-03-11 2022-09-13 Dongwoo Fine-Chem Co., Ltd. Touch sensor module and image display device comprising same

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