KR101450248B1 - Touch Screen Panel Improved in Electric Characteristic - Google Patents

Touch Screen Panel Improved in Electric Characteristic Download PDF

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Publication number
KR101450248B1
KR101450248B1 KR1020140045304A KR20140045304A KR101450248B1 KR 101450248 B1 KR101450248 B1 KR 101450248B1 KR 1020140045304 A KR1020140045304 A KR 1020140045304A KR 20140045304 A KR20140045304 A KR 20140045304A KR 101450248 B1 KR101450248 B1 KR 101450248B1
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KR
South Korea
Prior art keywords
pattern
wiring
transparent electrode
electrode pattern
contact
Prior art date
Application number
KR1020140045304A
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Korean (ko)
Inventor
오광식
김창변
정계근
Original Assignee
에스맥 (주)
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Publication date
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Priority to KR1020140045304A priority Critical patent/KR101450248B1/en
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Publication of KR101450248B1 publication Critical patent/KR101450248B1/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
    • 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

Abstract

The present invention relates to a touch screen panel, in which a transparent electrode pattern formed on a transparent substrate and an electrode wiring connected thereto are brought into mutual contact with each other through a relatively large contact area, thereby reducing the electrical contact resistance between the transparent electrode pattern and the electrode wiring It is possible to prevent manufacturing defects such as malfunctions and ghost defects and to have a higher quality and to make mutual contact sections of the transparent electrode pattern and the electrode wirings in the pattern extension section and the wiring extension section, Thereby reducing the electrical contact resistance between the transparent electrode pattern and the electrode wiring, and improving the workability of the manufacturing process, thereby facilitating fabrication and reducing manufacturing costs.

Description

[0001] The present invention relates to a touch screen panel having improved electrical characteristics,

The present invention relates to a touch screen panel. More particularly, the transparent electrode pattern formed on the transparent substrate and the electrode wiring connected thereto are brought into mutual contact with each other through a relatively large contact area, so that the electrical contact resistance between the transparent electrode pattern and the electrode wiring is reduced, It is possible to prevent the same fabrication defect and to have a better quality and to increase the mutual contact area by forming mutual contact sections of the transparent electrode pattern and the electrode wirings in the pattern extension section and the wiring extension section, The present invention relates to a touch screen panel capable of reducing the electrical contact resistance of electrode wirings and improving manufacturing workability, thereby facilitating fabrication and reducing manufacturing costs.

Personal computers, portable transmission devices, and other personal-purpose information processing devices perform text and graphics processing using various input devices such as a keyboard, a mouse, and a digitizer. These input devices are input devices as an interface according to the expansion of the use of PC, and it is difficult to cope with the product by only a keyboard and a mouse, and it is possible to input anybody while having a simpler and less erroneous operation, did. At present, much research has been conducted on reliability, new functions, durability, etc. beyond the level required to meet the general function of such input devices.

In particular, a touch screen panel is known as an input device capable of inputting characters without any other input device, and having a simple and less erroneous operation. Is also well known. The touch screen panel is classified into a resistive type, a capacitive type, an ultrasonic type, an optical (infrared ray) sensor type, and an electromagnetic induction type according to the operation type. Differences, differences in difficulty of design and processing technology, and so on. The criteria for selection are durability and economy as well as optical, electrical, mechanical, environmental, and input characteristics.

1 is a view for explaining an example of an electronic apparatus to which a conventional static capacitance type touch screen panel module is applied.

1, the touch screen panel module may be a portable electronic device such as a mobile communication terminal, a portable media player (PMP), a personal digital assistant (PDA), a navigation device, and an MP3 player as well as a television, a computer, a DVD player, , And a household appliance such as a washing machine. The electronic apparatus 1 includes a housing 11 constituting an external appearance of the electronic apparatus 1, a display unit 12 having a touch screen panel module mounted on the front surface of the housing, and an input key 13 ). The input key 13 may include a key that is frequently used separately from the touch screen panel module. Alternatively, the input key 13 may be removed and all inputs may be processed through the touch screen panel module.

The display unit 12 is a module for outputting an image related to the operation of the electronic device 1 to a user and can be implemented by a liquid crystal display (LCD), an organic light emitting display (OLED) have. A touch screen panel module is attached to the upper surface of the display unit 12 to receive input through a user's body or a stylus pen.

2 showing the exploded sectional view of the display unit, the display unit 12 includes a display unit 20 for outputting an image according to an electronic device to a user, a touch screen panel 20 disposed on the upper surface of the display unit 20, And a window 40 disposed on the upper surface of the module 10 and the touch screen panel module 10. The upper surface of the display unit 20 and the lower surface of the touch screen panel 10 are adhered to each other by an adhesive layer (not shown), and the lower surface of the window 40 and the upper surface of the touch screen panel 10 are adhered As shown in Fig. The image displayed on the display unit 20 is output to the user through the touch screen panel module 10 and the window 40. [

3 is a view for explaining the conventional static capacitance type touch screen panel module in more detail. The touch screen panel module senses the touch position through the user's body contact or the stylus pen contact and determines the contact position of the touch screen panel based on the touch position of the touch screen panel 30 which generates the touch position sensing signal And a flexible printed circuit board (not shown) having a control chip.

As shown in FIG. 3, the active area AR is located at the center of the touch screen panel 30, and the inactive area NAR is located along the periphery of the active area AR. Here, the active area AR refers to an area of the touch screen panel 30 that can detect a contact position using a user's body contact or a stylus pen. The inactive area NAR refers to a contact position sensed in the active area I.e., the area required to transmit the contact position sensing signal to the control chip.

In this touch screen panel 30, an active area AR and an inactive area NAR are formed on a transparent substrate 31. In the active area AR of the transparent substrate 31, A transparent electrode pattern 33 is formed on the transparent substrate 31 and a transparent electrode pattern 33 formed on the active region AR and an external device such as a control chip An electrode wiring 37 is formed. An ITO material is mainly used for the transparent electrode pattern 33. The transparent electrode pattern 33 is formed on the transparent substrate 31 through an etching process and the electrode wiring 37 is mainly made of a material such as silver (Ag) or copper (Cu) And is formed on the transparent substrate 31 through a printing exposure process.

At this time, the transparent electrode pattern 33 is extended from the active area AR to the inactive area NAR and contacts the electrode wiring 37. That is, the transparent electrode pattern 33 and the electrode wiring 37 are formed such that the respective ends of the transparent electrode pattern 33 and the electrode wiring 37 in the inactive region NAR are locally in contact with each other at the contact section P, The mutual contact area of the transparent electrode pattern 33 and the electrode wiring 37 is formed to be relatively small.

The transparent electrode pattern 33 and the electrode wiring 37 have a large electrical contact resistance at a portion where the transparent electrode pattern 33 and the electrode wiring 37 are in contact with each other due to the nature of the manufacturing process. Particularly, The contact resistance of the touch panel 33 and the electrode wiring 37 are locally mutually brought into contact with each other at a relatively small area so that a malfunction of the touch screen panel or a ghost defect A phenomenon that the contact is recognized as a contact even when there is no contact).

Korean Patent No. 10-1026522

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of the prior art by providing a transparent electrode pattern formed on a transparent substrate and electrode wirings connected thereto through mutual contact with each other through a relatively large contact area, And electrode wirings are reduced to prevent malfunctions such as malfunctions and ghost defects, and to provide a touch screen panel with higher quality.

Another object of the present invention is to reduce the electrical contact resistance between the transparent electrode pattern and the electrode wirings by increasing the mutual contact area between the transparent electrode pattern and the electrode wirings in the pattern widening section and the wiring widening section, And to provide a touch screen panel which is easy to manufacture and can reduce manufacturing cost by improving workability in manufacturing.

The present invention provides a liquid crystal display comprising: a transparent substrate on which an active region is formed at a central portion and an inactive region is formed along an outer periphery of the active region; A transparent electrode pattern formed on the active region and extending to the inactive region; And an electrode line formed in the inactive region and in contact with the transparent electrode pattern in the inactive region, wherein the transparent electrode pattern is formed with a pattern extension portion extending in a pattern width in the inactive region, A wiring extension part is formed at one end of the wiring pattern so as to be in contact with the pattern extension part of the electrode pattern and the transparent electrode pattern and the electrode wiring are in contact with each other through the pattern extension part and the wiring extension part, And a touch panel.

At this time, a section where the transparent electrode pattern and the electrode wiring are in contact with each other may be formed to be at least a section longer than the wiring extension section.

In addition, the transparent electrode pattern and the electrode wiring may be formed to be in contact with each other in the entire section where the electrode wirings are formed.

In addition, the electrode wiring may be formed to surround the transparent electrode pattern in a section where the transparent electrode pattern and the electrode wiring are in contact with each other.

The plurality of pattern extension portions may be spaced apart from each other in a direction perpendicular to the edge of the transparent substrate. The wiring extension portion may also extend in a direction perpendicular to the peripheral edge of the transparent substrate, As shown in FIG.

According to another aspect of the present invention, there is provided a method of manufacturing a touch screen panel, the method comprising: forming the transparent electrode pattern on the transparent substrate such that the pattern extension part is formed in the inactive area; Printing an electrode wiring layer in a manner to surround the transparent electrode pattern in an inactive region of the transparent substrate; And exposing and developing the electrode interconnection layer to form the electrode interconnection in such a manner that the interconnection extending portion is formed, wherein the transparent electrode pattern is formed at least in a section of the interconnection expansive portion and in contact with the electrode interconnection The present invention also provides a method of manufacturing a touch screen panel.

According to the present invention, since the transparent electrode pattern formed on the transparent substrate and the electrode wiring connected thereto are brought into mutual contact with each other through a relatively wide contact area, the electrical contact resistance between the transparent electrode pattern and the electrode wiring is reduced, It is possible to prevent fabrication defects such as the above-described defects, and to have a further superior quality.

Further, by increasing the mutual contact area between the transparent electrode pattern and the electrode wiring by forming the contact area between the transparent electrode pattern and the electrode wiring in the pattern extension part and the wiring extension part, the electrical contact resistance between the transparent electrode pattern and the electrode wiring is reduced, So that it is easy to manufacture and the manufacturing cost can be reduced.

FIG. 1 is a view for explaining an example of an electronic device to which a conventional touch screen panel module according to the related art is applied.
FIG. 2 is a sectional exploded view of a display unit including a conventional touch screen panel module according to the related art,
FIG. 3 schematically illustrates a pattern structure of a conventional touch screen panel according to the related art,
4 is a schematic view illustrating a pattern structure of a touch screen panel according to an exemplary embodiment of the present invention.
5 is a schematic view illustrating a pattern structure of a touch screen panel according to another embodiment of the present invention.
6 is a cross-sectional view taken along the line "AA" in Figs. 4 and 5,
FIG. 7 is a view illustrating a manufacturing process of a touch screen panel according to an exemplary embodiment of the present invention in order of operation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 4 is a view schematically showing a pattern structure of a touch screen panel according to an embodiment of the present invention. FIG. 5 is a view schematically showing a pattern structure of a touch screen panel according to another embodiment of the present invention. And Fig. 6 is a cross-sectional view taken along the line "AA" in Fig. 4 and Fig.

The touch screen panel 100 according to an embodiment of the present invention includes a transparent substrate 110 on which an active region AR and a non-active region NAR are formed, a transparent electrode pattern 120 formed on the transparent substrate 110, And the electrode wiring 130 and is configured to minimize electrical contact resistance between the transparent electrode pattern 120 and the electrode wiring 130.

The transparent substrate 110 may be formed of a transparent PET film or the like and an active region AR is formed at the central portion and an inactive region NAR is formed along the periphery of the active region AR. The active area AR refers to an area of the touch screen panel 100 that can detect a contact position using a user's body contact or a stylus pen and the inactive area NAR indicates an area Signal, i.e., a contact position sensing signal, to an external device such as a control chip.

The transparent electrode pattern 120 is formed in the active region AR of the transparent substrate 110 to detect the contact position of the user and is formed by etching the ITO material to the transparent substrate 110 through the etching process . The transparent electrode pattern 120 is formed mainly in the active region AR and extended to the inactive region NAR for connection contact with the electrode wiring 130.

The electrode wiring 130 is formed in the inactive region NAR and is in contact with the transparent electrode pattern 120 in the inactive region NAR so that the transparent electrode pattern 120 can be electrically connected to an external device. The electrode wiring 130 is formed by printing a material such as silver (Ag) or copper (Cu) on the transparent substrate 110 through a printing process and an exposure process.

At this time, a pattern extension part 121 is formed in the transparent electrode pattern 120 to extend the pattern width in the inactive area NAR. The pattern extension part 121 of the transparent electrode pattern 120 is formed in the electrode wiring 130, A wiring extension portion 131 is formed at one end portion corresponding to the pattern extension portion 121 so as to extend in the wiring width.

The touch screen panel 100 according to an exemplary embodiment of the present invention includes the pattern extension portion 121 of the transparent electrode pattern 120 and the wiring extension portion 131 of the electrode wiring 130 are in contact with each other in the inactive region NAR As a result, the contact area between the transparent electrode pattern 120 and the electrode wiring 130 is increased, so that the electrical resistance in the mutual contact area is relatively reduced. Accordingly, malfunction of the touch screen panel 100 or ghost failure can be significantly reduced.

That is, the touch screen panel 100 according to an exemplary embodiment of the present invention includes a pattern extension part 121 and a wiring extension part 131 that are respectively extended in widths of the transparent electrode pattern 120 and the electrode wiring 130 So that the electrical contact resistance generated in the mutual contact area is relatively reduced, thereby significantly reducing the defect rate.

As the contact area between the transparent electrode pattern 120 and the electrode wiring 130 is increased, the electrical contact resistance is reduced. Thus, the transparent electrode pattern 120 and the electrode wiring 130 are in contact with each other over as wide a space as possible It is advantageous.

4, the section P where the transparent electrode pattern 120 and the electrode wiring 130 are in contact with each other is formed to be at least a section longer than the wiring extension part 131, according to an embodiment of the present invention. 5, the transparent electrode pattern 120 and the electrode wiring 130 are brought into contact with each other in the entire section where the electrode wiring 130 including the wiring extension part 131 is formed .

In more detail, the transparent electrode pattern 120 may be formed in various shapes in the active region AR. In recent years, the transparent electrode pattern 120 is formed to be finer and more complex do. A larger amount of the electrode wiring 130 is formed in the inactive region NAR so that the transparent electrode pattern 120 can be connected to an external device. Since the inactive region NAR is formed along the periphery of the transparent substrate 110, the electrode wiring 130 is formed in the inactive region NAR so that the interval d2 therebetween is very narrow.

The pattern extension portions 121 of the transparent electrode pattern 120 are spaced apart from each other in the direction perpendicular to the peripheral edge of the transparent substrate 110, Portions 131 are also formed so as to be spaced apart from each other in a direction perpendicular to the edge circumferential direction of the transparent substrate 110 corresponding to the arrangement structure of the pattern extension portions 121. [ According to this arrangement structure, the pattern extension portion 121 and the wire extension portion 131 may have a wider spacing d1 in the inactive region NAR as shown in FIG.

Since the distance d1 between the wiring extensions 131 is greater than the distance d2 between the electrode wires 130 in this manner, (130) are mutually brought into contact with each other, the space (d1) between the wiring extensions (131) is relatively wide, which improves the workability of fabrication and reduces the defect rate.

That is, in the touch screen panel according to an embodiment of the present invention, the transparent electrode pattern 120 and the electrode wiring 130 are electrically connected to each other through the pattern extension part 121 and the wiring extension part 131 The wiring extension part 131 and the pattern extension part 121 are brought into mutual contact with each other in a section where the wiring extension part 131 is formed.

Meanwhile, the transparent electrode pattern 120 and the electrode wiring 130 may be formed to contact with each other in the entire section where the electrode wiring 130 is formed as shown in FIG. That is, the section P where the transparent electrode pattern 120 and the electrode wiring 130 are in contact with each other can be formed as a whole section in which the electrode wiring 130 is formed.

According to this structure, since the transparent electrode patterns 120 and the electrode wirings 130 are in contact with each other in the entire section of the electrode wirings 130, the mutual contact area is further increased as compared with that in Fig. 4, The electrical contact resistance between the pattern 120 and the electrode wiring 130 is significantly reduced.

At this time, the electrode wiring 130 may surround the transparent electrode pattern 120 as shown in FIG. 6 in a region where the transparent electrode pattern 120 and the electrode wiring 130 are in contact with each other.

7A, a transparent electrode pattern 120 is formed on an active region AR and a non-active region NAR of a transparent substrate 110, The ITO material or the like is formed on the transparent substrate 110 through the etching process as described above. At this time, the transparent electrode pattern 120 formed in the inactive region NAR is formed in consideration of the arrangement position of the electrode wiring 130 to be formed later. In addition, the pattern extension part 121 of the transparent electrode pattern 120 may be formed in the inactive area NAR.

7 (b), an electrode wiring layer T such as silver (Ag) is formed in a manner to surround the transparent electrode pattern 120 from the outside in the inactive region NAR of the transparent substrate 110 do.

After the electrode wiring layer T is formed, as shown in FIG. 7C, the electrode wiring layer T is exposed and developed with the arrangement structure of the electrode wiring 130 designed in advance to form the electrode wiring 130. At this time, the wiring extension part 131 can be formed in a shape corresponding to the pattern extension part 121.

7 (c), the transparent electrode pattern 120 and the electrode wiring 130 are electrically connected to the transparent electrode pattern 120 and the electrode wiring 130 in the entire section where the electrode wiring 130 is formed, The wiring lines 130 come into contact with each other. That is, the mutual contact section P between the transparent electrode pattern 120 and the electrode wiring 130 can be formed in the entire section where the electrode wiring 130 is formed.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

100: touch screen panel 110: transparent substrate
120: transparent electrode pattern 121: pattern extension part
130: electrode wiring 131: wiring extension part
AR: active area NAR: inactive area

Claims (6)

A transparent substrate on which an active region is formed at a central portion and an inactive region is formed along an outer periphery of the active region;
A transparent electrode pattern formed on the active region and extending to the inactive region; And
An electrode wiring formed in the non-active region and in contact with the transparent electrode pattern in the non-
Wherein the transparent electrode pattern is formed with a pattern extension part extending in a pattern width in the inactive area, and the electrode extension is provided with a wiring extension part having a wiring width extended at one end thereof so as to be in contact with the pattern extension part of the transparent electrode pattern, Lt; / RTI &
Wherein the transparent electrode pattern and the electrode wiring are in contact with each other through the pattern expanding portion and the wire extending portion so that the mutual contact area increases,
Wherein the transparent electrode pattern and the electrode wiring are formed such that the electrode wiring covers the outside of the transparent electrode pattern in a section where the transparent electrode pattern and the electrode wiring are in contact with each other.
The method according to claim 1,
Wherein a section where the transparent electrode pattern and the electrode wiring are in contact with each other is formed to be at least a section longer than the wiring extension section.
3. The method of claim 2,
Wherein the transparent electrode pattern and the electrode wiring are formed to be in contact with each other in the entire section where the electrode wiring is formed.
delete 4. The method according to any one of claims 1 to 3,
Wherein the pattern extension portions are formed in a plurality of locations spaced apart from each other in a direction perpendicular to a peripheral edge of the transparent substrate, Wherein the plurality of touch panels are spaced apart from each other.
delete
KR1020140045304A 2014-04-16 2014-04-16 Touch Screen Panel Improved in Electric Characteristic KR101450248B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090111783A (en) * 2008-04-22 2009-10-27 가부시키가이샤 히타치 디스프레이즈 Display device with touch panel
KR20100054899A (en) * 2008-11-15 2010-05-26 엘지이노텍 주식회사 Input device
KR20110120056A (en) * 2010-04-28 2011-11-03 (주)멜파스 Panel and apparatus for sensing touch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090111783A (en) * 2008-04-22 2009-10-27 가부시키가이샤 히타치 디스프레이즈 Display device with touch panel
KR20100054899A (en) * 2008-11-15 2010-05-26 엘지이노텍 주식회사 Input device
KR20110120056A (en) * 2010-04-28 2011-11-03 (주)멜파스 Panel and apparatus for sensing touch

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