KR100870229B1 - Switch module equipped with touch-panel and el-panel, and methods thereof - Google Patents

Switch module equipped with touch-panel and el-panel, and methods thereof Download PDF

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Publication number
KR100870229B1
KR100870229B1 KR1020080030220A KR20080030220A KR100870229B1 KR 100870229 B1 KR100870229 B1 KR 100870229B1 KR 1020080030220 A KR1020080030220 A KR 1020080030220A KR 20080030220 A KR20080030220 A KR 20080030220A KR 100870229 B1 KR100870229 B1 KR 100870229B1
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South Korea
Prior art keywords
electrode layer
layer
touch
base film
light emitting
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KR1020080030220A
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Korean (ko)
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길민규
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아이비컴(주)
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Publication of KR100870229B1 publication Critical patent/KR100870229B1/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
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details

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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)
  • Electroluminescent Light Sources (AREA)
  • Push-Button Switches (AREA)

Abstract

The present invention relates to a switch module used in a terminal of a mobile phone, PDA, navigation, remote control, and the like, and more particularly, to a capacitive sensing touch panel and an EL lamp panel capable of emitting a surface by itself. It is possible to form a thin film by stacking on it, and to connect the touch electrode layer for the touch panel and the upper electrode layer for the EL lamp panel on the same surface of the base film to reduce the manufacturing process, supply power to them, and transmit and receive control signals. The present invention relates to a light emitting touch switch module and a method of manufacturing the same.

The light emitting touch switch module, in which the touch panel and the EL lamp panel are integrally coupled to the base film of the present invention, includes a base film, a touch electrode layer stacked in a specific pattern on the bottom surface of the base film, and a bottom surface of the touch electrode layer. A touch panel including a stacked insulating layer; An upper electrode layer stacked on a lower surface of the insulating layer, a light emitting layer stacked on a lower surface of the upper electrode layer, an insulator layer stacked on a lower surface of the light emitting layer, and laminated on a lower surface of the insulating layer An EL lamp panel electrically connected to the upper electrode layer, the lower electrode layer applying a voltage to the light emitting layer, and a protective layer stacked on a lower surface of the lower electrode layer; Letters or numbers are displayed, and the display unit laminated on the upper surface of the base film of the touch panel;

Method of manufacturing a light emitting touch switch module according to the present invention comprises the steps of forming a touch electrode layer of a specific pattern by laminating an ITO paste or a conductive polymer on one surface of the base film; Stacking an insulator on a surface of the touch electrode layer to form an insulating layer; Stacking an ITO paste or a conductive polymer on the surface of the insulating layer to form an upper electrode layer having a specific pattern; Stacking a mixture of phosphor powder and an inorganic material on a surface of the upper electrode layer to form a light emitting layer; Stacking an insulator on the surface of the light emitting layer to form an insulator layer; Stacking a conductor on a surface of the insulator layer to form a lower electrode layer; And forming a protective layer by stacking a synthetic resin on the lower electrode layer surface.

Description

Light-emitting touch switch module with integrated touch panel and EL lamp panel in base film and manufacturing method thereof {SWITCH MODULE EQUIPPED WITH TOUCH-PANEL AND EL-PANEL, AND METHODS THEREOF}

The present invention relates to a switch module used in a terminal of a mobile phone, PDA, navigation, remote control, and the like, and more particularly, to a capacitive sensing touch panel and an EL lamp panel capable of emitting a surface by itself. Laminated to the thin film form,

The touch electrode layer for the touch panel and the upper electrode layer for the EL lamp panel are disposed on the same surface of the base film to reduce the manufacturing process, the light emitting touch switch module that can share the connection terminal for supplying power and transmitting and receiving control signals and It relates to a manufacturing method.

In general, the switch module is a signal generation switching device used in a terminal such as a mobile phone or a remote controller, and has a backlight device for identifying keys such as numbers and letters at night or in a dark place.

Conventional terminal switch module is composed of a PCB, a metal dome sheet, and a rubber sheet having a protrusion for pressurizing the metal dome sheet to electrically connect the PCB and the metal dome, there is a limit to thinner and lighter. .

In order to solve this problem, as disclosed in Korean Patent No. 801501, a thin and light touch switch keypad for detecting a change in capacitance (or inductance or impedance) according to human contact has been disclosed.

In addition, the backlight of the conventional terminal switch module has a structure that illuminates the keypad by mounting a needle LED on the PCB. Such a backlight has a limitation in that the LED is a point light source, the illumination is not uniform, and the visibility is low, the power consumption is high, and the keypad is thin.

In order to solve this problem, a backlight of a switch module using a thin, surface-emitting EL lamp panel has been disclosed in place of the LED as a backlight light source as shown in Patent No. 811219, Registration No. 377375, and the like.

Recently, a switch module combining a touch panel for a touch switch and an EL lamp panel for surface emission has been proposed in order to reduce the thickness of the entire switch module, and is a representative example thereof. Switch configuration method ", and Korean Patent Laid-Open Publication No. 2007-42," Touch panel and light emitting device (EL) integrated input device structure "has been published.

The above-mentioned patent is simply bonding the touch panel and the EL lamp panel by bonding with a transparent special adhesive,

The registered patent is to form a transparent electrode on the upper and lower surfaces of the base film, so that the electrode on the upper surface is used as a touch panel, and the transparent electrode on the lower surface is used as an EL lamp panel.

In the case of forming two transparent electrodes for the touch panel and the EL lamp panel by laminating them on both sides (upper and lower surface) of the base film as in the registered patent (including the above-mentioned patent),

Connection terminals for supplying driving power to them and detecting the operation (change in capacitance) of the touch panel electrodes and transmitting them to the control unit should be connected to each transparent electrode. That is, two connection terminals are provided to supply power to each transparent electrode. Thus, a space for mounting two connection terminals must be secured inside the terminal, and two connection terminals must be connected to two electrodes, respectively, thereby adding a manufacturing process.

In addition, since the electrodes are laminated on both sides of the base film, in order to prevent scratching of the surface of the base film, the protective film is attached to one side of the base film, and the electrodes are laminated on the other side, and the protective film attached to one side is removed and the electrode After attaching the protective film to the other laminated surface, another electrode is laminated on one surface from which the protective film has been removed, and a light emitting layer, an insulating layer, and the like are sequentially stacked thereon. That is, the registered patent is added to the process of attaching and removing the protective film on the base film, the process of inverting the base film after laminating the electrode on one surface of the base film is added.

The present invention has been made to solve the above problems, an object of the present invention is to provide a light-emitting touch switch module and a method of manufacturing the thin film, light weight by combining the touch panel and the EL lamp panel on the same surface of the base film integrated. and,

The touch electrode layer of the touch panel and the upper electrode layer of the EL lamp panel are all disposed on the same surface of the base film so that one connection terminal is electrically connected to the two electrode layers, thereby reducing the cost of materials and simplifying the manufacturing process and additional installation on the terminal. Another object of the present invention is to provide a light emitting touch switch module and a method of manufacturing the same.

In order to achieve the above object, a switch module in which a touch panel and an EL lamp panel are integrally coupled to the base film of the present invention is

A touch panel including a base film, a touch electrode layer stacked on a bottom surface of the base film to form a specific pattern, and an insulating layer stacked on the bottom surface of the touch electrode layer;

An upper electrode layer stacked on a lower surface of the insulating layer, a light emitting layer stacked on a lower surface of the upper electrode layer, an insulator layer stacked on a lower surface of the light emitting layer, and laminated on a lower surface of the insulating layer An EL lamp panel electrically connected to the upper electrode layer, the lower electrode layer applying a voltage to the light emitting layer, and a protective layer stacked on a lower surface of the lower electrode layer;

Letters or numbers are displayed, and the display unit is laminated on the upper surface of the base film of the touch panel.

The touch electrode layer has a connection part exposed on the bottom surface of the base film because the insulating layer is not laminated on the surface thereof, and the upper electrode layer is disposed adjacent to the connection part so as to be exposed on the bottom surface of the base film. The connection part of the touch electrode layer is connected to the connection part of the touch electrode layer and the upper electrode layer by electrically connecting them with a control unit, and receiving a driving power from the control unit, and detecting a capacitance change of the touch electrode layer and transmitting the connection terminal to the control unit. It is characterized by that.

In addition, the manufacturing method of the light emitting touch switch module according to the present invention

Forming a touch electrode layer having a specific pattern by laminating ITO paste or a conductive polymer on one surface of the base film;

Stacking an insulator on a surface of the touch electrode layer to form an insulating layer;

Stacking an ITO paste or a conductive polymer on the surface of the insulating layer to form an upper electrode layer having a specific pattern;

Stacking a mixture of phosphor powder and an inorganic material on a surface of the upper electrode layer to form a light emitting layer;

Stacking an insulator on the surface of the light emitting layer to form an insulator layer;

Stacking a conductor on a surface of the insulator layer to form a lower electrode layer;

And forming a protective layer by stacking a synthetic resin on the lower electrode layer surface.

And electrically connecting a connection terminal to the connection portion of the touch electrode layer and the connection portion of the upper electrode layer which is exposed and stacked on one surface of the base film.

The light emitting touch switch module and the manufacturing method of the present invention having the configuration as described above are combined with the touch panel and the EL lamp panel integrated on the same surface of the base film to perform not only a function as a switch but also a function as a backlight.

In addition, since the two electrode layers of the touch panel are disposed on the same side of the base film, there is no process of attaching or removing the protective film to the base film and no process of overturning the base film, and only one connection terminal for them is provided, thereby reducing material costs. Cost reduction can be achieved by simplifying the manufacturing process.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1A is a cross-sectional view of a light emitting touch switch module according to the present invention, FIG. 1B is a partially exploded perspective view, and FIG. 2 is a cross-sectional view of a manufacturing process diagram of a light emitting touch keypad according to the present invention.

As shown in FIGS. 1A, 2B, and 2, the light emitting touch switch module of the present invention includes a touch panel 20 and an EL lamp panel 30 which are sequentially stacked and integrated on the display unit 10 and the base film 21. It is composed.

Letters or numbers are displayed on the display unit 10 so as to identify a part to be touched by the user, and made of metal or synthetic resin.

The touch panel 20 recognizes a user's touch by detecting a change in capacitance (capacitance) induced between the human body and the touch electrode layer 25 when the human body contacts, or by detecting a change in inductance or a change in impedance through another application. It acts as a switch.

The EL lamp panel 30 has a phosphor powder and a small amount of inorganic material (or organic material) interposed between the two electrode layers when AC power (or DC power) is applied to the two electrode layers (the upper electrode layer 39 and the lower electrode layer 37). ) Is mixed to the light emitting layer 31 is a voltage is applied to the electrons in the phosphor is accelerated to generate high energy electrons and the electrons are recombined with the hole surface emitting to serve as a backlight.

The touch panel 20 is formed by sequentially stacking the base film 21, the touch electrode layer 25, and the insulating layer 23.

The base film 21 may be a PET film, PC film, PEN film or PI film, etc. as a synthetic resin, a glass plate may also be used.

The base film 21 is made of a transparent (including translucent) material so that light emitted from the EL lamp panel 30 can be transmitted to the display unit 10.

The touch electrode layer 25 is laminated on the lower surface of the base film 21, made of indium thin oxide (ITO) paste or a conductive polymer, and transparent (semi-transparent) like the base film 21 through which light can pass. Material) is preferred.

As the stacking method of the touch electrode layer 25, various methods such as deposition, printing, coating, and coating may be applied.

At this time, after the deposition or coating and lamination, a process of forming a specific pattern of the touch electrode layer 25 through an etching process is required. In the case of printing or coating, a specific pattern can be directly formed during lamination.

Each of the patterns of the touch electrode layer 25 includes a connection part 26 to which the connection terminal 40 is electrically connected. The surface of the connection part 26 is exposed without the insulating layer 23 being stacked.

The insulating layer 23 is an insulator made of a synthetic resin material and interposed between the touch electrode layer 25 and the upper electrode layer 39 to block their direct contact.

It is also preferably transparent or translucent so that light can be transmitted, and is laminated in a manner such as vapor deposition, printing, coating, and application.

The upper electrode layer 39 of the EL lamp panel 30 is laminated on the surface (lower surface) of the insulating layer 23, and an indium thin oxide (ITO) paste or a conductive polymer is deposited like the touch electrode layer 25. Laminated by printing coating or the like.

In addition, the pattern is formed in a specific pattern corresponding to the touch electrode layer 25, and each pattern has a connection portion 38 to which the connection terminal 40 is electrically connected, and to the connection portion 26 of the touch electrode layer 25. Adjacently placed and laminated on the base film 21.

Since the touch electrode layer 25 and the upper electrode layer 39 are all stacked on the lower surface of the base film 21 as described above, the touch electrode layer 25 and the upper electrode layer 39 may be electrically connected to one connection terminal 40. have.

Since the base film 21 has a predetermined thickness and a certain degree of rigidity, when the touch electrode layer 25 and the upper electrode layer 39 are laminated on both sides of the base film 21, one connection terminal 40 is used. It is difficult to connect both the touch electrode layer 25 and the upper electrode layer 39. Although not impossible, forcibly connecting both the touch electrode layer 25 and the upper electrode layer 39 to one connection terminal 40, the touch electrode layer 25 and the upper electrode layer 39 may be affected by an external impact or the like during or after the connection process. There is a high risk that each pattern or connection 26, 38 is broken.

On the other hand, when the touch electrode layer 25 and the upper electrode layer 39 are disposed on the same surface of the base film 21, the insulating layer 23 is very thin and flexible, so that it is connected to one connection terminal 40. There is less risk of such problems.

The EL lamp panel 30 stacked below the touch panel 20 includes an upper electrode layer 39, a light emitting layer 31, an insulator layer 33, a lower electrode layer 37, and a protective layer 35. The upper electrode layer 39 and the lower electrode layer 37 apply a voltage to the light emitting layer 31 so that the light emitting layer 31 emits light.

The light emitting layer 31 is formed of a material in which phosphor powder and a small amount of inorganic material (which may be organic matter) are mixed, and is deposited on the surface of the upper electrode layer 39 by deposition or printing coating. The light emitting layer 31 may be stacked on the entire surface of the upper electrode layer 39 and the surface of the insulating layer 23 or may be partially light-emitting by being stacked only on the surface of the upper electrode layer 39 in a specific pattern. In the case where the upper electrode layer 39 is stacked only on the surface, an etching process is required after deposition.

The insulator layer 33 is laminated on the surface of the light emitting layer 31 by deposition or printing coating to prevent the upper electrode layer 39 and the lower electrode layer 37 from being electrically connected to each other, and under the light emitting layer 31. Because it is located, it does not need to be transparent or translucent.

The lower electrode layer 37 may be copper, iron, silver, SUS, ITO, or the like as a conductor to be laminated on the surface of the insulator layer 33, and may be laminated using an adhesive, but may be deposited to be firmly stacked. However, it may be more preferable to be laminated by a printing coating method.

In addition, the insulating layer 33 may be stacked to cover most of the surface, or may be stacked to cover only a specific pattern portion of the upper electrode layer 39.

The protective layer 35 is laminated on the front side of the rear surface to prevent the lower electrode layer 37 from being damaged, and is deposited by deposition or printing coating.

The protective layer 35 is made of a synthetic resin material such as polyurethane.

The EL lamp panel 30 configured as described above has an AC voltage applied to the upper electrode layer 39 and the rear electrode when the control unit receives the operation signal of the touch electrode layer 25 and supplies driving power. May be applied to apply a voltage to the light emitting layer 31 so that the light emitting layer 31 emits light to illuminate the display unit 10.

The display unit 10 having letters or numbers displayed on the surface is laminated on the upper surface of the base film 21 by adhesive or double-sided tape, and the touch panel 20 and the EL lamp panel 30 are laminated and laminated. Although generally bonded, it may be laminated in the process of laminating from the base film 21 to the protective layer 35.

The connection terminal 40 is a lead wire printed on the FPCB (flexible PCB), and electrically connects the connection parts 26 and 38 and the control unit of each of the touch panel 20 and the EL lamp panel 30 to an electric signal. Send and receive. The connection with the control unit may be connected via a connector.

That is, the power supply is supplied to the touch panel 20 and the EL lamp panel 30, the capacitive change signal of the touch panel 20 is detected (received), the control unit is transmitted, and the lighting signal transmitted by the control unit (driving power source). ) Is transmitted to the EL lamp panel 30.

The connection terminal 40 is generally coupled to the connection parts 26 and 38 after the touch panel 20, the EL lamp panel 30, and the display part 10 are stacked. However, the touch electrode layer 25 and the upper electrode layer are connected. After 39 has been laminated, they can be joined in any process.

In the above description of the present invention, a light emitting touch switch module and a manufacturing method thereof, in which a touch panel and an EL lamp panel are integrally coupled to a base film having a specific shape and structure with reference to the accompanying drawings, have been described. Various modifications and variations are possible to those skilled in the art, and such variations and modifications should be construed as falling within the protection scope of the present invention.

1 is a cross-sectional view of a light emitting touch keypad according to the present invention.

2 is a process chart of the manufacturing method according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: display unit 20: touch panel

21: base film 23: insulating layer

25: touch electrode layer 26: connecting portion

30 EL lamp panel 31 emitting layer

33: insulator layer 35: protective layer

37: lower electrode layer 39: upper electrode layer

40: Connection terminal

Claims (4)

delete Base film, A touch electrode layer formed by forming a specific pattern on the lower surface of the base film; A touch panel including an insulating layer stacked on the bottom surface of the touch electrode layer; An upper electrode layer stacked on a lower surface of the insulating layer to form a specific pattern; A light emitting layer laminated on a lower surface of the upper electrode layer; An insulator layer laminated on the lower surface of the light emitting layer, A lower electrode layer laminated on a lower surface of the insulating layer and electrically connected to the upper electrode layer to apply a voltage to the light emitting layer; An EL lamp panel including a protective layer stacked on a lower surface of the lower electrode layer; Letters or numbers are displayed, the display unit is laminated on the upper surface of the base film of the touch panel; The touch electrode layer has a connection portion exposed to the bottom surface of the base film because the insulating layer is not laminated on the surface thereof, The upper electrode layer has another connecting portion arranged adjacent to the connecting portion so as to be exposed to the lower surface of the base film, The connection part of the touch electrode layer and the connection part of the upper electrode layer are electrically connected to the control part, and are supplied with driving power from the control part, and a connection terminal for sensing the capacitance change of the touch electrode layer and transmitting the same to the control part is connected. A light emitting touch switch module in which the touch panel and the EL lamp panel are integrally coupled to the base film. delete Forming a touch electrode layer having a specific pattern by laminating ITO paste or a conductive polymer on one surface of the base film; Stacking an insulator on a surface of the touch electrode layer to form an insulating layer; Stacking an ITO paste or a conductive polymer on the surface of the insulating layer to form an upper electrode layer having a specific pattern; Stacking a mixture of phosphor powder and an inorganic material on a surface of the upper electrode layer to form a light emitting layer; Stacking an insulator on the surface of the light emitting layer to form an insulator layer; Stacking a conductor on a surface of the insulator layer to form a lower electrode layer; Forming a protective layer by stacking a synthetic resin on the lower electrode layer; Electrically connecting a connection terminal to a connection portion of the touch electrode layer and a connection portion of the upper electrode layer exposed and stacked on one surface of the base film; and a touch panel and an EL lamp panel are integrated with the base film. Method of manufacturing a combined light emitting touch switch module.
KR1020080030220A 2008-04-01 2008-04-01 Switch module equipped with touch-panel and el-panel, and methods thereof KR100870229B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014021618A1 (en) * 2012-07-30 2014-02-06 어레인보우 주식회사 Integrated inorganic el display device and method for manufacturing same
KR101501991B1 (en) * 2014-08-29 2015-03-12 (주)성진엠케이 Electronic Switch having Easy Assembling
US9117679B2 (en) 2012-09-28 2015-08-25 Boe Technology Group Co., Ltd. Organic light emitting diode, touch display device and method for fabricating the same
US9715290B2 (en) 2010-10-08 2017-07-25 Samsung Electronics Co., Ltd. Slim type touch panel and mobile terminal including the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070076640A (en) * 2006-01-19 2007-07-25 주식회사 이에스에스디 A touch switch configuration way for luminescence

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070076640A (en) * 2006-01-19 2007-07-25 주식회사 이에스에스디 A touch switch configuration way for luminescence

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9715290B2 (en) 2010-10-08 2017-07-25 Samsung Electronics Co., Ltd. Slim type touch panel and mobile terminal including the same
WO2014021618A1 (en) * 2012-07-30 2014-02-06 어레인보우 주식회사 Integrated inorganic el display device and method for manufacturing same
KR101533436B1 (en) * 2012-07-30 2015-07-06 어레인보우 주식회사 Unified inorganic el display appratus and manufacturing method thereof
US9117679B2 (en) 2012-09-28 2015-08-25 Boe Technology Group Co., Ltd. Organic light emitting diode, touch display device and method for fabricating the same
KR101574390B1 (en) 2012-09-28 2015-12-03 보에 테크놀로지 그룹 컴퍼니 리미티드 Organic light emitting diode, touch display device and method for fabricating the same
KR101501991B1 (en) * 2014-08-29 2015-03-12 (주)성진엠케이 Electronic Switch having Easy Assembling

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