KR20150026620A - Touch panel - Google Patents

Touch panel Download PDF

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Publication number
KR20150026620A
KR20150026620A KR20130105704A KR20130105704A KR20150026620A KR 20150026620 A KR20150026620 A KR 20150026620A KR 20130105704 A KR20130105704 A KR 20130105704A KR 20130105704 A KR20130105704 A KR 20130105704A KR 20150026620 A KR20150026620 A KR 20150026620A
Authority
KR
South Korea
Prior art keywords
circuit board
printed circuit
cover window
disposed
adhesive layer
Prior art date
Application number
KR20130105704A
Other languages
Korean (ko)
Inventor
박제원
Original Assignee
엘지이노텍 주식회사
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 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR20130105704A priority Critical patent/KR20150026620A/en
Publication of KR20150026620A publication Critical patent/KR20150026620A/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1643—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being associated to a digitizer, e.g. laptops that can be used as penpads
    • 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
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display

Abstract

A touch panel according to an embodiment includes: a cover window including a valid area and a non-valid area; A printed circuit board disposed on the cover window; A sensing electrode formed in the effective region; And a wiring electrode formed on the printed circuit board, wherein the sensing electrode and the wiring electrode are in direct contact with each other.

Description

TOUCH PANEL {TOUCH PANEL}

The embodiment relates to a touch panel.

2. Description of the Related Art In recent years, a touch panel has been applied to an image displayed on a display device in various electronic products by a method of touching an input device such as a finger or a stylus.

Such a touch panel can largely be divided into a resistance film type touch panel and a capacitive type touch panel. In the resistive touch panel, the glass and the electrode are short-circuited by the pressure of the input device and the position is detected. A capacitance type touch panel senses a change in electrostatic capacitance between electrodes when a finger touches them, thereby detecting the position.

The resistance film type touch panel may be deteriorated in performance by repeated use, and scratch may occur. As a result, there is a growing interest in a capacitive touch panel having excellent durability and long life span.

Conventionally, a touch panel includes a flexible printed circuit board (hereinafter, referred to as " flexible printed circuit board ") having a drive chip for driving a touch panel by a change in capacitance after a decor layer is formed on a cover window and a sensing electrode and a wiring electrode are formed on a cover window or a substrate FPCB).

However, such a manufacturing process has a problem in that the manufacturing efficiency is lowered due to a large number of processes.

The embodiment aims at providing a touch panel of a new structure which is simple in manufacturing process.

A touch panel according to an embodiment includes: a cover window including a valid area and a non-valid area; A printed circuit board disposed on the cover window; A sensing electrode formed in the effective region; And a wiring electrode formed on the printed circuit board, wherein the sensing electrode and the wiring electrode are in direct contact with each other.

A touch panel according to another embodiment includes: a cover window including a valid area and a non-valid area; A printed circuit board disposed on the cover window and having wiring electrodes formed thereon; And a sensing electrode formed on the effective region, wherein the printed circuit board is disposed only inside the cover window.

A touch panel according to an embodiment includes a printed circuit board on which wiring electrodes are formed. That is, a printed circuit board on which wiring electrodes are formed is disposed on one side of the cover window.

Conventionally, a sensing electrode is formed on an effective region of a cover window, and a wiring electrode is formed on a non-effective region. As a result, the number of processes increased.

However, in the touch panel according to the embodiment, the process of forming the wiring electrode on the cover window by depositing the conductive material on the effective region of the cover window is not performed by disposing the printed circuit board on which the wiring electrode is formed directly on the cover window can do.

Further, in the case of including an adhesive layer disposed between the cover window and the printed circuit board instead of the conventional decor layer,

The touch panel according to the embodiment can easily realize a desired color by changing the color of the adhesive layer. In other words, conventionally, only the black or white decor layer can be realized with a black pigment or a white pigment, but the touch panel according to the embodiment can realize various appearance colors by changing the color of the adhesive layer.

In addition, by disposing the adhesive layer and the printed circuit board so as to have a step difference, it is possible to solve the problems such as generation of bubbles due to the step gap when the conductive material is deposited on the effective area.

Therefore, the touch panel according to the embodiment can improve process efficiency and reliability.

1 is an exploded perspective view of a touch panel according to an embodiment.
2 is a sectional view of the touch panel according to the first embodiment.
3 is a top view showing the top surface of the touch panel according to the embodiments.
FIGS. 4 to 6 are views for explaining the position of a printed circuit board disposed on a cover window on an upper surface of the touch panel according to the embodiments.
7 is another cross-sectional view of the touch panel according to the second embodiment.
8 is a diagram showing an example of a display device to which a touch panel according to the embodiments is applied.

In the description of the embodiments, it is to be understood that each layer (film), area, pattern or structure may be referred to as being "on" or "under / under" Quot; includes all that is formed directly or through another layer. The criteria for top / bottom or bottom / bottom of each layer are described with reference to the drawings.

The thickness or the size of each layer (film), region, pattern or structure in the drawings may be modified for clarity and convenience of explanation, and thus does not entirely reflect the actual size.

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

1 to 3, the touch panel according to the first embodiment includes a cover window 10, a printed circuit board 20 disposed on the cover window 10, a sensing electrode 20 formed on the cover window, (30) and a wiring electrode (40) disposed on the printed circuit board (20).

The cover window 10 may comprise glass or plastic. In one example, the cover window 10 may comprise tempered glass, semi-tempered glass, soda lime glass, reinforced plastic or soft plastic.

The cover window 10 includes a valid area AA and a non-valid area UA. Here, the valid area AA is an area where the user can input a touch command. The non-valid area UA is a concept opposite to the valid area AA, and is activated even when the user touches the area And the touch command input is not performed.

A sensing electrode 30 may be formed on the cover window 10. In detail, the sensing electrode 30 may be formed on the effective area AA of the cover window 10.

For example, the sensing electrode 30 includes a first sensing electrode pattern arranged in a first direction and a second sensing electrode pattern arranged in a second direction.

The sensing electrode 30 may include a conductive material. For example, the sensing electrode 30 may include a transparent conductive material such as indium tin oxide (ITO).

The printed circuit board (20) is disposed on the cover window (10). For example, the printed circuit board 20 may include a flexible printed circuit board (FPCB).

The printed circuit board 20 may be adhered to the cover window 10 by an adhesive layer 50 disposed between the cover window 10 and the printed circuit board 20.

The adhesive layer 50 may be interposed between the cover window 10 and the printed circuit board 20 along the area where the printed circuit board 20 is disposed. In this case, the adhesive layer 50 may have a shape corresponding to the printed circuit board 20. In detail, the adhesive layer 50 is disposed in a shape corresponding to the printed circuit board 20, and the printed circuit board 20 can be adhered to the cover window 10 by the adhesive layer 50.

The adhesive layer 50 may be disposed at the edge of the cover window 10. In detail, the adhesive layer 50 may be disposed on the ineffective area UA of the cover window 10.

The adhesive layer 50 may comprise an opaque material. Thus, the printed circuit board 20, the wiring electrodes 40, and the like disposed on the adhesive layer 50 can be prevented from being seen from the outside by the adhesive layer 50. [ The adhesive layer 50 may have a color suitable for a desired appearance. The printed circuit board 20 may be disposed on the ineffective area UA of the cover window 10. In detail, the printed circuit board 20 may be disposed at an edge of the cover window 10. [ For example, the printed circuit board 20 may extend along at least two sides of the inner edge of the cover window 10.

That is, as shown in FIG. 4, the printed circuit board 200 may extend along two sides of the inner edge of the cover window 10. Alternatively, as shown in FIG. 5, the printed circuit board 200 may extend along three sides of the inner edge of the cover window 10. Alternatively, as shown in FIG. 6, the printed circuit board 200 may be disposed along four edges, that is, all the edges of the inner edge of the cover window 10.

At this time, when the printed circuit board 200 is disposed on two or three sides of the inner edge of the cover window 10, the upper surface of the cover window 10 remains on the remaining inner edge side 11 Or a printing layer may be formed by applying printing ink or the like.

A command icon pattern 90 may be patterned on at least one side of the singed printed circuit board 20. [ For example, as shown in FIG. 3, a command icon pattern 90 may be patterned on the lower side of the inner edge of the printed circuit board 20.

A wiring electrode (40) is formed on one surface of the printed circuit board (20). The wiring electrode 40 may include a conductive material. In one example, the wiring electrode 40 may include a metal material such as silver (Ag) or copper (Cu), for example.

In addition, the connector 60 having the driving chip 70 mounted on the printed circuit board 20 may be formed. The wiring electrode 40 may be connected to the connector 60. Accordingly, the touch signal generated at the sensing electrode moves through the wiring electrode, and is transmitted to the driving chip through the connector connected to the wiring electrode, so that the touch panel can be driven according to the touch signal.

2 and 3, the wiring electrode 40 is electrically connected to the sensing electrode 30 formed on the effective area AA of the cover window 10. In detail, the sensing electrode 30 and the wiring electrode 40 may be in direct contact and electrically connected. At this time, the sensing electrode 30 may be formed on the effective area AA of the cover window 10 while partially covering the wiring electrode 40. That is, the sensing electrode 30 may cover at least a part of the wiring electrode 40, and the sensing electrode 30 may contact the upper surface and the side surface of the wiring electrode 40.

The distance L1 from the upper surface of the cover window 10 to the upper surface of the sensing electrode 30 is a distance L2 from the upper surface of the cover window 10 to the upper surface of the wiring electrode 40, Lt; / RTI >

The wiring electrode 40 may be connected to the connector 60. One end of the wiring electrode 40 is connected to the sensing electrode 30 and the other end of the wiring electrode 40 is connected to the connector 60 formed on the printed circuit board 20. That is, one end of the wiring electrode 40 is electrically connected to the sensing electrode 30, and the other end of the wiring electrode 40 is connected to the connector, Signal to the driving chip.

The touch sensing signal sensed by the sensing electrode 30 is transmitted to the connector 60 through which the driving chip 70 is mounted through the wiring electrode 40 so that the driving chip 70 Can be driven.

Referring to FIG. 7, the touch panel according to the embodiment may further include a print layer 80 formed on the ineffective area UA of the cover window 10. That is, the print layer 80 may be disposed between the cover window 10 and the printed circuit board 20 in the ineffective area UA of the cover window 10. In detail, the print layer 80 may be disposed between the cover window 10 and the adhesive layer 50.

In addition, the print layer 80 may be disposed with a step with the adhesive layer 50 and / or the printed circuit board 20. The print layer 80 protrudes more toward the effective area AA of the cover window 10 than the adhesive layer 50 and / or the printed circuit board 20, The adhesive layer 50 and / or the printed circuit board 20 may have a step difference. That is, the print layer 80, the adhesive layer 50, and the printed circuit board 20 may be stacked in order and laminated in a stepped shape.

8 is a perspective view showing an example of a display device to which the touch panel according to the embodiment is applied.

8, the display device 700 includes a cover window including a valid area AA and a non-valid area UA, a command icon pattern part 710, a camera 720, a speaker 720, .

The display device 700 may include the above-described touch panel. Accordingly, the process efficiency and reliability of the display device 700 can be improved.

In FIG. 8, the mobile phone is shown as an example of the display device 700, but the present invention is not limited thereto. The display device 700 may include a navigation or notebook pad.

The features, structures, effects and the like described in the foregoing embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

Claims (14)

A cover window including a valid region and a non-valid region;
A printed circuit board disposed on the cover window;
A sensing electrode formed in the effective region; And
And a wiring electrode formed on the printed circuit board,
Wherein the sensing electrode and the wiring electrode are in direct contact with each other. The method according to claim 1,
Wherein a distance from an upper surface of the cover window to an upper surface of the sensing electrode is larger than a distance from an upper surface of the cover window to an upper surface of the wiring electrode. The method according to claim 1,
Wherein the sensing electrode surrounds at least a part of the wiring electrode. The method according to claim 1,
And a decor layer disposed on the ineffective area,
Wherein the printed circuit board is disposed on the decor layer. The method according to claim 1,
And an adhesive layer disposed between the cover window and the printed circuit board. A cover window including a valid region and a non-valid region;
A printed circuit board disposed on the cover window and having wiring electrodes formed thereon; And
And a sensing electrode formed on the effective region,
Wherein the printed circuit board is disposed only inside the cover window. The method according to claim 6,
Wherein the printed circuit board extends along at least two sides of the edges of the cover window. 8. The method of claim 7,
Wherein the printed circuit board is disposed on an area corresponding to the ineffective area of the cover window. The method according to claim 6,
And an adhesive layer disposed between the cover window and the printed circuit board. 10. The method of claim 9,
Wherein the adhesive layer protrudes from the printed circuit board toward the effective area. 11. The method of claim 10,
Wherein the adhesive layer is interposed between the cover window and the printed circuit board along a region where the printed circuit board is disposed. 11. The method of claim 10,
And a decor layer disposed between the cover window and the adhesive layer. 13. The method of claim 12,
Wherein the decor layer protrudes from the adhesive layer toward the effective area. A mobile terminal comprising the touch panel according to any one of claims 1 to 13.
KR20130105704A 2013-09-03 2013-09-03 Touch panel KR20150026620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130105704A KR20150026620A (en) 2013-09-03 2013-09-03 Touch panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130105704A KR20150026620A (en) 2013-09-03 2013-09-03 Touch panel

Publications (1)

Publication Number Publication Date
KR20150026620A true KR20150026620A (en) 2015-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR20130105704A KR20150026620A (en) 2013-09-03 2013-09-03 Touch panel

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220075843A (en) 2020-11-30 2022-06-08 김동형 exercise equipment for core reinforcement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220075843A (en) 2020-11-30 2022-06-08 김동형 exercise equipment for core reinforcement

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