KR20100031307A - Touch panel and manufacturing method thereof - Google Patents

Touch panel and manufacturing method thereof Download PDF

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Publication number
KR20100031307A
KR20100031307A KR1020080090330A KR20080090330A KR20100031307A KR 20100031307 A KR20100031307 A KR 20100031307A KR 1020080090330 A KR1020080090330 A KR 1020080090330A KR 20080090330 A KR20080090330 A KR 20080090330A KR 20100031307 A KR20100031307 A KR 20100031307A
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KR
South Korea
Prior art keywords
electrodes
double
adhesive tape
transparent conductive
sided adhesive
Prior art date
Application number
KR1020080090330A
Other languages
Korean (ko)
Inventor
김진수
Original Assignee
일진디스플레이(주)
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 일진디스플레이(주) filed Critical 일진디스플레이(주)
Priority to KR1020080090330A priority Critical patent/KR20100031307A/en
Publication of KR20100031307A publication Critical patent/KR20100031307A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/23—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  for the control of the colour
    • 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
    • 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
    • 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
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1631—Panel PC, e.g. single housing hosting PC and display panel

Abstract

PURPOSE: A touch panel and a manufacturing method thereof are provided so that a dispenser for electrically interlinking an electrode of an upper plate and electrode of a lower plate is formed through the simple process. CONSTITUTION: A dot spacer(211) is formed in the upper side of the lower part transparent conductive film. A both-side adhesive tape(220) is respectively adhered in the top and bottom electrode. The top and lower plate are sticking each other. Dispensers(221, 231) electrically connect a part among the top and bottom electrodes. The double-sided adhesive tape comprises through spaces(231, 233). The dispenser is arranged in the penetration hole(255). It is respectively adhered among the top and bottom electrodes in a part.

Description

Touch panel and manufacturing method therefor {TOUCH PANEL AND MANUFACTURING METHOD THEREOF}

The present invention relates to a touch panel and a method of manufacturing the same. More specifically, the present invention relates to a touch panel capable of electrically connecting an upper electrode formed on an upper substrate of a touch panel and a lower electrode formed on a lower substrate by a simple method, and a method of manufacturing the same.

Touch panels are widely used as input devices of various electronic devices.

The touch panel is mainly configured and used together with an image display device such as a flat panel display, and is generally operated by touching a specific point of the touch panel with a finger or a pen. Such a touch panel is typically a resistive type consisting of two resistive sheets arranged so as to be insulated by dot spacers and to be in contact with each other by being pressed. Various types of touch panels are known, such as capacitive type, ultrasonic type, optical (infrared) sensor type, and electromagnetic induction type.

Among the various touch panels, the resistive touch panel is widely used as an input device such as an electronic organizer, PDA, portable PC, etc. in combination with a liquid crystal display device, and is thinner, smaller, lighter, and consumes more power than other methods. It is known to have advantages. The resistive touch panel has a matrix method and an analog method according to a detection method, and the analog method uses a 4-wire resistive film method, a 5-wire resistive film method, and an 8-wire resistive film depending on the wiring of electrodes for detecting touch points. Method and the like.

BACKGROUND ART A resistive touch panel having an electrode for detecting a touched point is typically provided with a plurality of electrodes on the upper substrate and the lower substrate, and the electrodes are formed in an electrically separated state from each other. More specifically, the upper transparent conductive film is patterned on the lower surface of the upper substrate, and a plurality of upper electrodes are printed on the lower surface of the upper transparent conductive film, the lower transparent conductive film is patterned on the upper surface of the lower substrate, and the upper surface is on the upper surface of the lower transparent conductive film. The electrodes are printed, and the upper and lower substrates are attached to each other by attaching double-sided adhesive tapes respectively to the lower surface of the upper electrode and the upper surface of the lower electrode.

In this case, the upper electrode is formed substantially along the outer periphery of the upper substrate, and the lower electrode is formed substantially along the outer periphery of the lower substrate. The plurality of upper electrodes formed on the upper substrate are formed spaced apart from each other to be electrically separated from each other. Similarly, a plurality of lower electrodes formed on the lower substrate are also formed in a spaced state so as to be electrically separated from each other.

The upper substrate and the lower substrate are attached to each other by adhering the lower surface of the upper electrode and the upper surface of the lower electrode with a double-sided adhesive tape.

Next, a dispenser is formed to electrically connect at least some of the lower electrode and at least some of the upper electrode. Typically, a vertically penetrating empty space for forming a dispenser is formed in the double-sided adhesive tape, and the space is filled with an electrically conductive dispenser to electrically connect some of the lower electrode and some of the upper electrode.

In the case of forming the dispenser in an injection method, a through hole for injecting an electrically conductive material in a liquid state is formed in the lower substrate. That is, the dispenser is formed by forming an upper electrode and a lower electrode on the upper substrate and the lower substrate, and then bonding the both sides with a double-sided adhesive tape, injecting a liquid electrically conductive material through the through hole of the lower substrate, and curing the same. Can be.

In the case of forming the dispenser in the injection method as described above, an appropriate amount of electrically conductive material must be injected into the space formed by the lower surface of the upper electrode, the double-sided adhesive tape, and the upper surface of the lower electrode. There is a difficult problem. If the amount of the electrically conductive material injected is small, the upper electrode and the bottom electrode may not be electrically connected. On the other hand, if the amount of the electrically conductive material injected is too large, the gap between the upper electrode and the lower electrode may lead to product failure. There was a problem that could be. In addition, there is a problem that the through hole must be formed in the lower substrate in order to inject the electrically conductive material.

The present invention was created to solve the problems described above, the problem to be solved by the present invention is a touch to form a dispenser for electrically connecting the electrode of the upper substrate and the electrode of the lower substrate through a simple process. A panel, a touch panel, and a manufacturing method thereof are provided.

The touch panel according to an embodiment of the present invention for achieving the above object is, an upper substrate on which a lower transparent conductive film is patterned and a plurality of upper electrodes are formed, the lower transparent conductive film is patterned on the upper surface A lower substrate having a plurality of lower electrodes formed thereon, a dot spacer formed on an upper surface of the lower transparent conductive film, and a double-sided adhesive tape adhered to the upper electrode and the lower electrode to adhere the upper substrate and the lower substrate to each other And a dispenser for electrically connecting some of the plurality of upper electrodes and some of the plurality of lower electrodes. The double-sided adhesive tape forms a space penetrated in the vertical direction in which the dispenser is disposed, and the dispenser is disposed in a through hole formed in the double-sided adhesive tape, so that the dispenser is disposed on a portion of the plurality of upper electrodes and a portion of the plurality of lower electrodes. It is an electrically conductive double-sided adhesive tape to be bonded to each other.

According to an embodiment of the present invention, a method of manufacturing a touch panel includes: patterning an upper transparent conductive film on a lower surface of an upper substrate, forming a plurality of upper electrodes on a lower surface of the upper transparent conductive film, and lower transparent on an upper surface of a lower substrate Patterning a conductive film, forming a plurality of lower electrodes on an upper surface of the lower transparent conductive film, forming a dot spacer on an upper surface of the lower transparent conductive film of the lower substrate, a part of the plurality of upper electrodes and the plurality of Adhering a double-sided adhesive tape having a through-hole formed in a vertical direction at a position corresponding to a region of a part of the lower electrodes of the upper electrode and the lower electrode, and electrically conductive double-sided to the through-hole formed in the double-sided adhesive tape. Disposing an adhesive tape and overlying the upper substrate on the double-sided adhesive tape; And a step of bonding the lower substrate of the other.

According to the present invention, a dispenser for electrically connecting some of the plurality of upper electrodes and some of the plurality of lower electrodes is formed of an electrically conductive double-sided adhesive tape, so that the upper electrode and the lower electrode are more electrically connected to each other. It can be adhered, it is difficult to control the injection amount of the electrically conductive material has a conventional method of injecting and curing the electrically conductive material to form a dispenser, and the problems caused by it can be fundamentally solved and for the injection of the electrically conductive material There is an effect that the through hole formed in the lower substrate can be omitted.

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

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Like parts are designated by like reference numerals throughout the specification. When a part, such as a layer or film, is said to be "on" or "below" another part, this includes not only the other part "directly above" or "directly below" but also another part in the middle. . On the contrary, when a part is "directly above" or "directly below" another part, there is no other part in the middle.

First, referring to FIG. 1, a touch panel according to an exemplary embodiment of the present invention includes an upper substrate 101 and a lower substrate 201 bonded to each other.

The upper substrate 101 and the lower substrate 201 may be formed of an electrically insulating transparent material. For example, the upper substrate 101 and the lower substrate 201 may be formed of a transparent material such as a stretchable polyethylene terephthalate (PET) film or thin glass.

In addition, the upper substrate 101 and the lower substrate 201 are bonded to each other while the FPC 300, which is an electrode for applying an electrical signal, is sandwiched between the upper substrate 101 and the lower substrate 201.

Hereinafter, a touch panel and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

2 to 4, the upper transparent conductive film 103 is patterned on the lower surface of the upper substrate 101 and a plurality of upper electrodes 105 and 106 are formed. That is, the upper transparent conductive film 103 is formed on the lower surface of the upper substrate 101, and the plurality of upper electrodes 105 and 106 are formed on the lower surface of the upper transparent conductive film 103.

The upper transparent conductive layer 103 may be formed of a transparent material having electrical conductivity such as indium tin oxide (ITO). In this case, the upper transparent conductive film 103 is patterned according to the shape of the plurality of upper electrodes 105 and 106 to be formed thereunder. For example, the upper transparent conductive layer 103 may be patterned such that the plurality of upper electrodes 105 and 106 are electrically separated from each other.

2 to 4, the lower transparent conductive layer 203 is patterned on the upper surface of the lower substrate 201, and a plurality of lower electrodes 205, 206, 207, and 209 are formed. That is, the lower transparent conductive film 203 is formed on the upper surface of the lower substrate 201, and the plurality of lower electrodes 205, 206, 207, and 209 are formed on the upper surface of the lower transparent conductive film 203.

The lower transparent conductive layer 203 may be formed of a transparent material having electrical conductivity such as indium tin oxide (ITO). In this case, the lower transparent conductive film 203 is patterned according to the shape of the plurality of lower electrodes 205, 206, 207, and 209 to be formed thereon. For example, the lower transparent conductive layer 103 may be patterned such that the plurality of lower electrodes 205, 206, 207, and 209 are electrically separated from each other.

In this case, as shown in FIG. 2, the plurality of upper electrodes 105 and 106 may be arranged to substantially surround an active area of the touch panel, and the plurality of lower electrodes 205, 206, 207, 209 may be similarly arranged to surround the active area of the touch panel.

The plurality of upper electrodes 105 and 106 and the plurality of lower electrodes 205, 206, 207, and 209 may be formed of a metal material having good electrical conductivity, for example, by printing silver. .

A dot spacer 211 is formed on the upper surface of the lower transparent conductive film 203. The dot spacer 211 may be formed before the lower electrodes 205, 206, 207, and 209 are formed on the lower transparent conductive film 203. The dot spacer 211 performs a function of maintaining an appropriate gap between the upper transparent conductive film 103 and the lower transparent conductive film 203 and may be formed of a polymer material having appropriate elasticity. For example, the dot space 211 may be formed by screen printing.

The upper substrate 101 and the lower substrate 201 are attached to each other by an electrically insulating double-sided adhesive tape 220. That is, as shown in the figure, the double-sided adhesive tape 220 is adhered to the upper electrode 105, 106 and the lower electrode 205, 206, 207, 209, respectively, thereby the upper substrate 101 and the lower substrate 201 ) Are attached to each other. In this case, as shown in FIG. 2, the double-sided adhesive tape 220 may be formed to have a form in which a portion corresponding to the active area of the touch panel is empty and surrounds the outside thereof.

Meanwhile, the touch panel according to the embodiment of the present invention dispensers 231 and 233 for electrically connecting at least some of the plurality of upper electrodes and at least some of the plurality of lower electrodes 205, 206, 207, and 209. ). At this time, the dispensers 231 and 233 are formed of a double-sided adhesive tape having electrical conductivity. Conventionally known electrically conductive double sided adhesive tapes can be used.

Hereinafter, with reference to the accompanying drawings, an example of the electrode structure will be described in more detail.

First, the lower electrodes 205, 206, 207, and 209 are provided in two pairs. Each terminal of the two pairs of lower electrodes 205, 206, 207, and 209 is electrically connected to each terminal of the FPC 300 applied to an external power source. Meanwhile, a through hole 225 may be formed in a portion of the region of the double-sided adhesive tape 220 corresponding to the region where the FPC 300 is located.

More specifically, the pair of electrodes indicated by reference numerals 207 and 209 among the plurality of lower electrodes 205, 206, 207, and 209 apply electricity in the X-axis direction to the active region of the lower transparent conductive film 230. It is provided to. For this purpose, the pair of electrodes indicated by reference numerals 207 and 209 includes a portion extending in the Y-axis direction. At this time, as shown in Figure 2, the lower transparent conductive film 203 is formed with cutting lines 204a, 204b extending in the X-axis direction and the lower transparent conductive film separated by the cutting lines 204a, 204b. Both parts of the 203 are electrically insulated, so that when power is applied to the pair of electrodes 207 and 209, current flows only in the X-axis direction of the active region of the lower transparent conductive film 203.

On the other hand, a pair of electrodes 105 and 106 are formed on the upper substrate 101. At this time, a portion of the plurality of lower electrodes 205, 206, 207, and 209 indicated by reference numerals 205 and 206 is a pair of electrodes 105 and 106 formed on the upper substrate 101 by the dispensers 231 and 233. Are electrically connected to each other. To this end, the dispensers 231 and 233 are formed of an electrically conductive material, and the lower end thereof contacts the electrodes indicated by the reference numerals 206 and 205 of the plurality of lower electrodes 205, 206, 207, and 209, respectively. Upper ends of the 231 and 233 contact the upper electrodes 106 and 105 of the upper substrate 101, respectively. To this end, as shown in the figure, through-holes 221 and 231 penetrated in the vertical direction are formed in the double-sided adhesive tape 220, respectively.

In this case, the dispensers 231 and 233 are each formed of an electrically conductive double-sided adhesive tape, and the dispensers 231 and 233 are respectively filled in the through holes 221 and 223 of the double-sided adhesive tape 220. At this time, the lower and upper surfaces of the dispensers 231 and 233, which are electrically conductive double-sided adhesive tapes, respectively contact the pair of lower electrodes 206 and 205 and the pair of upper electrodes 106 and 105, respectively. Electrodes 206 and 205 are electrically connected to the pair of upper electrodes 106 and 105, respectively.

In this case, the through holes 221 and 223 of the double-sided adhesive tape 210 correspond to the regions of the electrodes indicated by the reference numerals 206 and 205 among the upper electrodes 106 and 105 and the lower electrodes 205, 206, 207, and 209. The through-hole formed in the double-sided adhesive tape 220 is formed in a position to be formed, and after the double-sided adhesive tape 210 is adhered to any one of the upper electrodes 106 and 105 and the lower electrodes 205, 206, 207, and 209. The electrically conductive double-sided adhesive tapes 231 and 233 may be disposed at the 221 and 223. Next, the touch panel may be completed by bonding the other of the upper substrate 101 and the lower substrate 201 to the double-sided adhesive tape 220 and the dispensers 231 and 233 which are the electrically conductive double-sided adhesive tape. More specific example, the double-sided adhesive tape 220 is adhered to the lower electrodes 205, 206, 207, and 209 formed on the lower substrate 201 and electrically conductive double-sided through the through-holes 221, 223 of the double-sided adhesive tape 220. After disposing the dispensers 231 and 233 which are the adhesive tapes, the upper substrate 101 is attached to the double-sided adhesive tape 220 such that the upper electrodes 106 and 105 of the upper substrate 101 are adhered to the upper surface of the double-sided adhesive tape 220. ) Can be adhered to.

Compared to a method of forming a dispenser by injecting an electrically conductive liquid and then curing it, according to an embodiment of the present invention, since the dispensers 231 and 233 are formed of an electrically conductive double-sided adhesive tape, the dispenser 231 is a very simple process. , 233 can be formed, and the problem that it is difficult to control the amount of the electrically conductive liquid injected in the injection method is automatically solved, and furthermore, it is necessary to form a through hole in the lower substrate to inject the electrically conductive liquid. There is no advantage.

Meanwhile, the upper electrodes 106 and 105 electrically connected to the electrodes indicated by reference numerals 206 and 205 of the plurality of lower electrodes 205, 206, 207, and 209 through the dispensers 231 and 233, respectively, may be formed of an upper transparent conductive material. It is formed so that electricity can be applied to the active region of the film 103 so that a current flows in the Y-axis direction. To this end, the upper electrodes 105, 106 include a portion extending in the X-axis direction. At this time, as shown in Figure 2, the upper transparent conductive film 201 is formed with cutting lines 104a, 104b extending in the Y-axis direction and the upper transparent conductive film separated by the cutting lines (104a, 104b) Since both sides of the 103 are electrically insulated, when power is applied to the pair of electrodes 105 and 106, current flows only in the Y-axis direction of the active region of the upper transparent conductive film 103.

For example, when a specific point of the active area of the touch panel is touched to electrically conduct the upper transparent conductive film 103 and the lower transparent conductive film 203 at the corresponding point, the X axis of the lower transparent conductive film 203 Y-axis coordinates of the touched point can be obtained by detecting an electric signal of current in the direction, and X-axis coordinates of the touched point can be detected by detecting an electric signal of current in the Y-axis direction of the upper transparent conductive film 103. You can get it. Since the method of calculating the coordinates of the touched point by the electrode structure is obvious to those skilled in the art, a detailed description thereof will be omitted.

As an example, the dispenser is formed of an electrically conductive double-sided adhesive tape using the electrode structure of a 4-wire resistive touch panel as an example. However, the present invention is a 5-wire as long as the dispenser is formed of an electrically conductive double-sided adhesive tape. It can also be applied to any resistive touch panel such as a resistive film method or an 8-wire resistive film method.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it is recognized that the present invention is easily changed and equivalent by those skilled in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.

1 is a perspective view of a touch panel according to an exemplary embodiment of the present invention.

2 is an exploded perspective view of a touch panel according to an exemplary embodiment of the present invention.

3 is a cross-sectional view taken along the line III-III of FIG. 1.

4 is a cross-sectional view taken along the line IV-IV of FIG. 1.

Claims (2)

An upper substrate on which a lower transparent conductive film is patterned and a plurality of upper electrodes are formed, A lower substrate on which a lower transparent conductive film is patterned and a plurality of lower electrodes are formed, A dot spacer formed on an upper surface of the lower transparent conductive film, Double-sided adhesive tape adhered to the upper electrode and the lower electrode, respectively, and attaching the upper substrate and the lower substrate to each other; and A dispenser electrically connecting a portion of the plurality of upper electrodes and a portion of the plurality of lower electrodes, The double-sided adhesive tape forms a space penetrated in the vertical direction in which the dispenser is disposed, And the dispenser is an electrically conductive double-sided adhesive tape disposed in a through hole formed in the double-sided adhesive tape and adhered to a portion of the plurality of upper electrodes and a portion of the plurality of lower electrodes, respectively. Patterning the upper transparent conductive film on the lower surface of the upper substrate, Forming a plurality of upper electrodes on a lower surface of the upper transparent conductive film, Patterning a lower transparent conductive film on an upper surface of the lower substrate, Forming a plurality of lower electrodes on an upper surface of the lower transparent conductive film, Forming a dot spacer on an upper surface of the lower transparent conductive film of the lower substrate; Adhering a double-sided adhesive tape having a through hole formed in a vertical direction at a position corresponding to a portion of the plurality of upper electrodes and a portion of the plurality of lower electrodes to one of the upper electrode and the lower electrode, Disposing an electrically conductive double-sided adhesive tape in the through hole formed in the double-sided adhesive tape, and And bonding the other one of the upper substrate and the lower substrate to the double-sided adhesive tape.
KR1020080090330A 2008-09-12 2008-09-12 Touch panel and manufacturing method thereof KR20100031307A (en)

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KR1020080090330A KR20100031307A (en) 2008-09-12 2008-09-12 Touch panel and manufacturing method thereof

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KR1020080090330A KR20100031307A (en) 2008-09-12 2008-09-12 Touch panel and manufacturing method thereof

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KR20100031307A true KR20100031307A (en) 2010-03-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101067164B1 (en) * 2010-05-03 2011-09-22 삼성전기주식회사 Display device having touch screen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101067164B1 (en) * 2010-05-03 2011-09-22 삼성전기주식회사 Display device having touch screen

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