KR101064648B1 - Touch panel with scroll transparent electrode and touch window having the same - Google Patents

Touch panel with scroll transparent electrode and touch window having the same Download PDF

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Publication number
KR101064648B1
KR101064648B1 KR1020100073570A KR20100073570A KR101064648B1 KR 101064648 B1 KR101064648 B1 KR 101064648B1 KR 1020100073570 A KR1020100073570 A KR 1020100073570A KR 20100073570 A KR20100073570 A KR 20100073570A KR 101064648 B1 KR101064648 B1 KR 101064648B1
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KR
South Korea
Prior art keywords
transparent electrode
scroll
stripe
touch panel
touch
Prior art date
Application number
KR1020100073570A
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Korean (ko)
Inventor
김진복
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020100073570A priority Critical patent/KR101064648B1/en
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Publication of KR101064648B1 publication Critical patent/KR101064648B1/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
    • 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

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

Abstract

The present invention can widen the transparent electrode pattern while maintaining the resistance value of the transparent electrode pattern required by the sensor chip of the touch window, and by the wider transparent electrode pattern, accurate touch of the external conductor and thereby scroll effect of improving the touch sensitivity. The present invention relates to a touch panel in which a transparent electrode is formed and a touch window including the same. To this end, in particular, an embodiment of the present invention, the touch panel is formed with a scroll transparent electrode, the substrate; And a scroll transparent electrode formed on the substrate, wherein the scroll transparent electrode comprises: a stripe transparent electrode in a stripe shape; And a branch electrode surface formed along at least one side of the stripe transparent electrode to form a capacitance, and the width of the connection portion connected to the stripe transparent electrode is smaller than the maximum width of the branch electrode surface and the width of the stripe transparent electrode. It includes a plurality of branch transparent electrode.

Description

TOUCH PANEL WITH SCROLL TRANSPARENT ELECTRODE AND TOUCH WINDOW HAVING THE SAME}

The present invention relates to a touch panel in which a scroll transparent electrode is formed and a touch window including the same. More particularly, the present invention relates to a touch panel including a scroll transparent electrode having a branch transparent electrode formed on the scroll transparent electrode and improving touch sensitivity while maintaining electrode resistance.

In general, a touch window in which a scroll transparent electrode is formed detects a touch using a transparent electrode of a thin film constituting the touch window. In this case, when the area to be detected is determined, the pattern length of the touch sensing transparent electrode It is set similar to the length of the area.

However, the pattern width of the transparent electrode is set by calculating the sheet resistance in order to satisfy the resistance range required by the sensor chip used. Therefore, if the width of the transparent electrode pattern is narrow according to the resistance requirement of the sensor chip, the sensitivity may be reduced due to the small pattern and the closing area of the finger even if the finger is slightly out of position. There may be a problem that the touch is not properly recognized.

The present invention was created to solve the above problems, and an object of the present invention is to enable an accurate touch by widening the transparent electrode pattern while maintaining the resistance value of the transparent electrode pattern required by the sensor chip of the touch window. In addition, the present invention provides a touch panel including a scroll transparent electrode which can improve touch sensitivity and a touch window including the same.

An object of the present invention as described above, in the touch panel on which the scroll transparent electrode is formed, the substrate; And a scroll transparent electrode formed on the substrate;

The scroll transparent electrode may include a stripe transparent electrode in a stripe shape; And a branch electrode surface formed along at least one side of the stripe transparent electrode to form a capacitance, and the width of the connection portion connected to the stripe transparent electrode is smaller than the maximum width of the branch electrode surface and the width of the stripe transparent electrode. It can be achieved by providing a touch panel having a scroll transparent electrode including a plurality of branch transparent electrodes.

The substrate is preferably a polyethylene terephthalate (PET) substrate.

The substrate includes an upper substrate and a lower substrate, and the scroll transparent electrode is preferably formed on any one of the upper substrate and the lower substrate.

The scroll transparent electrode is preferably formed by patterning the indium tin oxide (ITO) conductive thin film.

The stripe transparent electrode may have a rectangular shape.

Each branch transparent electrode is preferably formed such that a current flowing into the stripe transparent electrode through the connection portion is limited.

The branch transparent electrode surface may have a trapezoidal shape in which short one sides of the parallel sides are connected to each other or a rectangular shape in which one side of the four sides is connected to the connection portion.

It may further include a button electrode formed on at least one end of the stripe transparent electrode.

Meanwhile, an object of the present invention can be achieved by providing a touch window using a touch panel on which a scroll transparent electrode including a striped transparent electrode and a branch transparent electrode is formed.

According to the embodiment of the present invention as described above, the transparent electrode pattern can be widened while maintaining the resistance value of the transparent electrode pattern required by the sensor chip of the touch window.

In addition, the wider transparent electrode pattern has the effect of accurate touch of the external conductor and thereby improving touch sensitivity.

1 is a plan view showing a button unit plane of a touch window in which a conventional scroll transparent electrode is formed;
2 is a cross-sectional view showing a cross section in the AA direction of FIG.
3 is a plan view showing a plane of the scroll transparent electrode pattern of one embodiment configuration of the present invention touch panel,
4 is a cross-sectional view showing a section in the BB direction of FIG.
5 is a plan view showing a plane of a modification of the scroll transparent electrode of an embodiment of the touch panel of the present invention;
Figure 6 is a cross-sectional view showing a cross section of an embodiment of the present invention touch window.

< Example >

1 is a plan view illustrating a button unit plane of a touch window in which a conventional scroll transparent electrode is formed. As shown in FIG. 1, the touch window 1 in which the conventional scroll transparent electrode is formed has a stripe-shaped scroll transparent electrode 4 and a scroll transparent electrode 4 separately from the main body transparent electrode 3 on the substrate 2b. A pair of button electrodes 5 are formed at both ends.

The scroll transparent electrode 4 detects and displays a touch position due to a change in capacitance when a conductor such as a conductive stylus pen or a finger T is positioned on or touches the top of the touch window 1. It is used for screen switching of a means (not shown).

However, as shown in FIG. 1, the scroll transparent electrode 4 has a problem in that the touch sensitivity is inferior because the width H 0 is very narrow as compared with the length W 0 as a stripe shape. In addition, the scroll transparent electrode 4 should have a resistance value specified in a predetermined range in design of a sensing chip (not shown).

Therefore, to improve this, increasing the width H 0 decreases the sheet resistance, and conversely, decreasing the width H 0 increases the sheet resistance and decreases the touch sensitivity. As shown in FIG. 2, the touch sensitivity decreases due to one capacitance value of the scroll transparent electrode 4 in the scroll transparent electrode 4 having a narrow width H 0 in relation to the external finger T. It can be seen that only C 0 ) is formed.

< scroll  With transparent electrode Touch panel >

3 is a plan view showing a plane of the scroll transparent electrode pattern of one embodiment configuration of a touch panel of the present invention. As shown in FIG. 3, one embodiment of the touch panel 10 having the scroll transparent electrode according to the present invention includes a substrate 110b and a scroll transparent electrode 120. Of course, a protective layer 22 may be formed on the scroll transparent electrode 120 to protect the electrode. Meanwhile, the scroll transparent electrode 120 is composed of a plurality of branch transparent electrodes 140 having a stripe-shaped stripe transparent electrode 130 and a connection portion 140a.

This embodiment serves to improve the touch sensitivity during touch by increasing the capacitance value while maintaining the resistance value of the scroll transparent electrode 120 through a plurality of branch transparent electrode 140 in a certain range.

4 is a cross-sectional view illustrating a cross section in the B-B direction of FIG. 3. Hereinafter, each configuration of the present embodiment will be described with reference to FIGS. 3 and 4.

The substrate 110b uses a polyethylene terephthalate (PET) substrate, and the scroll transparent electrode 120 is an indium tin oxide (ITO), which is a conductive thin film deposited on the substrate 110b as a thin film. Oxide) is formed by patterning a conductive thin film.

The stripe transparent electrode 130 is formed in a stripe shape having a long band to form a main pattern of the scroll transparent electrode 120, and forms a capacitance C 1 and a conductive object such as an external finger T. For example, the stripe transparent electrode 130 is designed according to a sensor chip (not shown) so that a resistance value in the range of about 5 to 6 kΩ / □ is maintained when the distance between the pair of button electrodes 150 is 500 mm. In this case, the line width H 1 is about 1.5 mm.

The branch transparent electrode 140 is formed along at least one side of the stripe transparent electrode 130 and has a branch electrode surface on which capacitances C 2 and C 3 can be formed, and is connected to the stripe transparent electrode 130. The width of the connection portion 140a is smaller than the maximum width B 0 of the branch electrode surface and the width H 1 of the stripe transparent electrode 130. Through the connection portion 140a formed as described above, the branch transparent electrode 140 serves to limit the current flowing in and out of the stripe transparent electrode 130.

As a result, it can be seen that the total transparent capacitance C = C 1 + C 2 + C 3 with the stripe transparent electrode 130 is increased by the branch transparent electrode 140.

As illustrated in FIG. 3, the branch transparent electrode 140 may have a trapezoidal shape in which short one sides of both sides parallel to each other form the connection portion 140a.

< Branch  Transparent electrode Variant >

5 is a plan view showing a plane of a modification of the scroll transparent electrode of an embodiment of the touch panel of the present invention. A stripe electrode 132 is formed between the pair of button electrodes 152, and branch transparent electrodes 142 are formed at both sides thereof. As shown in FIG. 5, the branch transparent electrode 142 may have a rectangular shape in which one side of the four sides is connected to the connection unit 142a.

Since the branch transparent electrode 142 may be implemented by forming the branch transparent electrode maximum width B 1 wider than the connection portion 142a, there may be various modifications therein, and the present invention is not limited to the specific shape.

< scroll  With transparent electrode Touch window >

Figure 6 is a cross-sectional view showing a cross section of an embodiment of the present invention touch window. The same configuration as the touch panel described with reference to FIG. 4 has the same reference numeral. As shown in FIG. 6, the light-transparent adhesive layers 30 and 31 and the window layer 20 are added to the touch panel 10 having the scroll transparent electrode. Since the present embodiment has a two-layer capacitive type structure, the upper substrate 110a and the lower substrate 110b are included, and the window layer 20 is stacked on the uppermost layer. Light-transparent adhesives 30 and 31 are formed between the scroll transparent electrode 120 and the upper substrate 110a formed on the lower substrate 110b and between the upper substrate 110a and the window layer 20, respectively. Can be positioned and configured.

In addition, the touch window may take a capacitive type structure of one layer, and in this case, the lower substrate 110b and the window layer 20 and the light transparent adhesive layer 30 are disposed between the lower substrate 110a without the upper substrate 110a. Can be configured.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. In addition, the scope of the present invention is indicated by the appended claims rather than the detailed description above. Also, it is to be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

T: finger
C 0 , C 1 , C 2 , C 3 : capacitance
W 0 , W 1 : length of the stripe transparent electrode
H 0 , H 1 : width of stripe transparent electrode
B 0 , B 1 : the maximum width of the branch transparent electrode surface
1: Conventional touch window
2a: upper substrate
2b: lower substrate
3: transparent electrode
4: scrolling transparent electrode
5: button electrode
6: window layer
7: light transparent adhesive layer
10: touch panel
20: window layer
22: protective layer
30, 31: light transparent adhesive layer
110a: upper substrate
110b: lower substrate
120: scroll transparent electrode
130, 132: striped transparent electrode
140 and 142: branch transparent electrode
140a, 142a: connection
150, 152: button electrode

Claims (9)

In the touch panel on which the scroll transparent electrode is formed,
Board; And
Including; scroll transparent electrode formed on the substrate;
The scroll transparent electrode,
A stripe transparent electrode in the form of a stripe; And
A branch electrode surface formed along at least one side of the stripe transparent electrode to form a capacitance, and a width of a connection portion connected to the stripe transparent electrode is a maximum width of the branch electrode surface and a width of the stripe transparent electrode; A touch panel having a scroll transparent electrode including a plurality of branch transparent electrodes formed narrower.
The method of claim 1,
The substrate is a touch panel with a scroll transparent electrode, characterized in that the polyethylene telephthalate material substrate.
The method of claim 1,
The substrate includes an upper substrate and a lower substrate,
The scroll transparent electrode is a touch panel with a scroll transparent electrode, characterized in that formed on any one of the upper substrate and the lower substrate.
The method of claim 1,
The scroll transparent electrode is a touch panel with a scroll transparent electrode, characterized in that formed by patterning on the ITO conductive thin film.
The method of claim 1,
The stripe transparent electrode is a touch panel with a scroll transparent electrode, characterized in that the rectangular shape.
The method of claim 1,
Each branch transparent electrode is a touch panel formed with a scroll transparent electrode, characterized in that the current flowing in and out of the stripe transparent electrode through the connection is limited.
The method of claim 1,
The branch transparent electrode surface is a touch panel having a scroll transparent electrode, characterized in that the short one of the sides parallel to each other is a trapezoidal shape to form the connecting portion or one of four sides is a rectangular shape connected to the connecting portion.
The method of claim 1,
And a button electrode formed on at least one of both ends of the stripe transparent electrode.
A touch window comprising a touch panel having a scroll transparent electrode according to any one of claims 1 to 7.
KR1020100073570A 2010-07-29 2010-07-29 Touch panel with scroll transparent electrode and touch window having the same KR101064648B1 (en)

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Application Number Priority Date Filing Date Title
KR1020100073570A KR101064648B1 (en) 2010-07-29 2010-07-29 Touch panel with scroll transparent electrode and touch window having the same

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101415585B1 (en) * 2012-03-23 2014-07-04 엘지이노텍 주식회사 Touch window and liquid crystal display comprised of the touch window
KR101856241B1 (en) * 2012-05-31 2018-05-09 엘지이노텍 주식회사 Touch window and manufacturing method thereof
US10599000B2 (en) 2016-06-24 2020-03-24 Samsung Display Co., Ltd. Smart window

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160544U (en) * 1988-04-22 1989-11-08
KR20050034525A (en) * 2003-10-07 2005-04-14 후지쯔 가부시끼가이샤 Piezoelectric element and touch panel device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160544U (en) * 1988-04-22 1989-11-08
KR20050034525A (en) * 2003-10-07 2005-04-14 후지쯔 가부시끼가이샤 Piezoelectric element and touch panel device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101415585B1 (en) * 2012-03-23 2014-07-04 엘지이노텍 주식회사 Touch window and liquid crystal display comprised of the touch window
KR101856241B1 (en) * 2012-05-31 2018-05-09 엘지이노텍 주식회사 Touch window and manufacturing method thereof
US10599000B2 (en) 2016-06-24 2020-03-24 Samsung Display Co., Ltd. Smart window

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