WO2011001828A1 - Système d'entrée de coordonnées, dispositif d'affichage doté de celui-ci et dispositif électronique - Google Patents

Système d'entrée de coordonnées, dispositif d'affichage doté de celui-ci et dispositif électronique Download PDF

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Publication number
WO2011001828A1
WO2011001828A1 PCT/JP2010/060212 JP2010060212W WO2011001828A1 WO 2011001828 A1 WO2011001828 A1 WO 2011001828A1 JP 2010060212 W JP2010060212 W JP 2010060212W WO 2011001828 A1 WO2011001828 A1 WO 2011001828A1
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WO
WIPO (PCT)
Prior art keywords
layer
coordinate input
input device
transparent
substrate
Prior art date
Application number
PCT/JP2010/060212
Other languages
English (en)
Japanese (ja)
Inventor
貴志 西山
英人 笹川
一芳 山縣
辰吾 星
Original Assignee
アルプス電気株式会社
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 アルプス電気株式会社 filed Critical アルプス電気株式会社
Publication of WO2011001828A1 publication Critical patent/WO2011001828A1/fr

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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
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface

Definitions

  • the present invention relates to a coordinate input device that includes a planar input unit and can output a pressed coordinate position of the input unit, a display device including the coordinate input device, and an electronic device, and more particularly, decorative printing around the input unit.
  • the present invention relates to a coordinate input device including a layer, a display device including the layer, and an electronic apparatus.
  • Information terminals such as mobile phones, PDAs, and PCs have a display screen such as a liquid crystal display panel so that menus can be selected and data can be input by pressing the surface with a touch pen or a finger.
  • a coordinate input device may be provided to cover the surface of the display screen. Devices equipped with a coordinate input device have recently spread to digital cameras and portable game machines.
  • the resistance film type coordinate input device has a first translucent substrate made of a resin plate or a glass plate on the surface of which a transparent conductive film made of a transparent conductive material such as ITO (Indium Tin Oxide) is formed.
  • a second transparent substrate made of a transparent film having a transparent conductive film formed on the operation side, and an insulating layer interposed between the transparent conductive films of the transparent substrate so as to face each other. It is provided and configured.
  • the second light-transmitting substrate has flexibility and is bent by being pressed with a touch pen or a finger, so that the transparent conductive films facing each other come into contact with each other.
  • a printed circuit is formed on each outer peripheral portion of the translucent substrate, and by measuring the voltage division ratio due to the resistance of the transparent conductive film when pressed, the X direction and the Y direction orthogonal to each other, The pressing position in the input unit can be specified.
  • a decorative printing layer is formed on the side surface of the transparent film display device.
  • the decorative print layer constitutes a part of the design of the device as a frame surrounding the display screen. Since this decorative printing layer is formed on the surface of the transparent film by a technique such as screen printing, it has a certain thickness and is convex. Since the surface on which the transparent conductive film is formed needs to be flat, in the conventional coordinate input device, an overcoat layer is formed over the entire surface including the decorative print layer of the transparent film. The surface on the display device side was made to be flush.
  • Patent Document 1 An example of such a coordinate input device is disclosed in Patent Document 1.
  • the conventional coordinate input device provided with the decorative print layer has a large thickness because the overcoat layer is formed over the entire surface of the transparent film including the decorative print layer. If the thickness of the overcoat layer is large, the thickness of the coordinate input device is hindered, and the combined thickness of the transparent film and the overcoat layer also increases, which increases the pressing force required to deflect the transparent film. There is a problem that the operability of the coordinate input device is also deteriorated.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a coordinate input device that can be thinned while having a decorative print layer, a display device including the coordinate input device, and an electronic apparatus. .
  • the coordinate input device provides an insulation between a first light-transmitting substrate and a flexible second light-transmitting substrate whose one surface is the operation surface side.
  • a coordinate input device that is disposed to face each other through a layer and a transparent conductive film is formed on the inner surface side of each light-transmitting substrate,
  • a decorative print layer is formed in an outer peripheral region between the second translucent substrate and the transparent conductive film formed on the inner surface side of the second translucent substrate, and the inner periphery of the decorative print layer In the side region, a transparent thickened layer having a surface that is flush with the transparent conductive film side surface of the decorative print layer is formed.
  • the decorative print layer includes a plurality of layers, and the surface layer constituting at least the transparent conductive film side surface of the plurality of layers is the second of the plurality of layers.
  • the inner peripheral end portion is closer to the outer periphery than the layer on the translucent substrate side, and the transparent thickened layer is formed in an inner peripheral region from the inner peripheral end portion of the surface layer, and the plurality of layers Among them, the second light-transmitting substrate side layer is configured to overlap.
  • the coordinate input device is characterized in that the transparent conductive film formed on the inner surface side of the second translucent substrate is formed directly on the surface of the transparent thickened layer. Has been.
  • the display device according to the present invention is configured by providing any one of the coordinate input devices on the surface of the display panel.
  • the electronic device comprises the display device as a display unit.
  • the decorative print layer is formed in the outer peripheral region between the second light-transmitting substrate and the transparent conductive film formed on the inner surface side of the second light-transmitting substrate.
  • a transparent thickening layer having a surface that is flush with the transparent conductive film side surface of the decorative printing layer is formed. The thickness of the transparent thickened layer can be reduced as compared with the case where it is formed on the entire surface including the decorative printed layer, and the thickness of the entire apparatus can be prevented from being hindered. Since the pressing force required to bend the conductive substrate can be suppressed, the operability can be improved.
  • a decoration printing layer consists of several layers, and the surface layer which comprises the transparent conductive film side surface at least among several layers is 2nd among several layers.
  • the inner peripheral end is formed closer to the outer periphery than the layer on the translucent substrate side, and the transparent thickened layer is formed in the inner peripheral side region from the inner peripheral end of the surface layer.
  • the surface layer is the second light transmissive substrate. Since the inner peripheral edge part is closer to the outer periphery than the side layer, the gap is hidden by the layer on the second translucent substrate side so that it cannot be seen from the outside, and the design is improved. It is possible to prevent damage.
  • the transparent conductive film formed on the inner surface side of the second light-transmitting substrate is directly formed on the surface of the transparent thickened layer, so that the second There is no need to provide an adhesive layer between the translucent substrate and the transparent conductive film, and the thickness can be further reduced.
  • FIG. 4 is an enlarged view of the vicinity of one side of FIG. 3. It is a perspective view of the mobile telephone in which the coordinate input device was used.
  • FIG. 1 is a conceptual exploded perspective view of the coordinate input device according to the present embodiment.
  • the coordinate input device 1 includes a first translucent substrate 10 that is roughly formed in a planar shape, and a first planar substrate that is substantially the same shape as the first translucent substrate 10.
  • the light-transmitting substrate 20 is disposed opposite to the light-transmitting substrate 20 with the insulating layer 40 interposed therebetween.
  • a flexible substrate 30 is attached.
  • the first translucent substrate 10 is formed of a transparent resin plate, and the transparent conductive film 11 is formed on the surface facing the second translucent substrate 20.
  • the second light transmissive substrate 20 is formed of a flexible transparent film, and a transparent conductive film 21 is formed on the surface facing the first light transmissive substrate 10.
  • ITO IndiumITOTin Oxide
  • ZnO transparent inorganic material
  • a transparent conductive material such as a resin film containing carbon nanotubes is used as a transparent organic material. It has a uniform resistance value.
  • a PET (polyethylene terephthalate) resin or the like is used for the film constituting the second light-transmissive substrate 20.
  • the side opposite to the first translucent substrate 10 side of the second translucent substrate 20 serves as an input unit 1a capable of performing a pressing operation.
  • electrode portions 12a are formed along two opposite sides in the Y direction in the drawing.
  • the electrode part 22a is formed in the outer peripheral part of the surface in which the transparent conductive film 21 of the 2nd translucent board
  • These electrode portions 12 a and 22 a are electrically connected to the output electrode portion 31 of the flexible substrate 30.
  • the decorative printed layer 23 is formed in a frame shape over the entire periphery on the outer peripheral portion of the second translucent substrate 20 and surrounds the input portion 1a.
  • the area of the input unit 1a is transparent, and characters and images displayed on a display device disposed below the input unit 1a can be seen through, whereas the decorative print layer 23 is colored and transmits light. Without configuring, a part of the design in the electronic apparatus to which the coordinate input device 1 is attached as a frame of the display device is configured. Moreover, a pattern, a character, a mark, a picture, etc. can be added to the decorative printing layer 23 in addition to coloring.
  • FIG. 2 the schematic diagram showing the operation principle of the coordinate input device 1 is shown.
  • the coordinate input device 1 at the time of a pressing operation from the input unit 1a, an operation for specifying a pressing coordinate position in each of the X direction and the Y direction is performed.
  • FIG. 2A shows the operation principle when the pressed coordinate position is specified in the X direction.
  • the second light-transmitting substrate 20 having flexibility is bent.
  • the transparent conductive film 21 of the second light-transmitting substrate 20 and the transparent conductive film 11 of the first light-transmitting substrate 10 come into contact with each other and become conductive.
  • the transparent conductive film 21 formed on the surface of the second translucent substrate 20 has resistance values RX1 and RX2 corresponding to the respective distances between the point S and each electrode 22a in the X direction.
  • a potential gradient is formed.
  • the transparent conductive film 11 formed on the surface of the first translucent substrate 10 has a resistance value RY1, RY2 corresponding to the distance between the point S and each electrode 12a in the Y direction.
  • a potential gradient is formed. Then, by extracting the potential at the point S from the electrode 22a formed on the second light transmitting substrate 20 and performing A / D conversion, the coordinate in the Y direction can be detected.
  • FIG. 3 shows a cross-sectional view of the display device 2 to which the coordinate input device 1 is attached.
  • the display device 2 is provided in a mobile phone as an electronic device, and is configured as a liquid crystal display unit having a liquid crystal screen.
  • the coordinate input device 1 is attached to the surface of the display device 2 in order to enable input with a touch pen or a finger.
  • the display device 2 is configured such that a liquid crystal layer 52 sealed with a sealing material 53 is sandwiched between an upper substrate 50 and a lower substrate 51 that are arranged to face each other.
  • the display device 2 is of a reflective type, and external light incident from the outside is reflected by a reflective layer in the liquid crystal layer 52 for display.
  • the first light-transmitting substrate 10 and the second light-transmitting substrate 20 are disposed to face each other with the insulating layer 40 interposed therebetween.
  • a transparent conductive film 11 is formed on the surface of the first light-transmitting substrate 10 on the side facing the second light-transmitting substrate 20, and electrodes constituting the printed circuit unit 12.
  • a portion 12a is formed.
  • a transparent conductive film 21 is formed on the second translucent substrate 20 on the side facing the first translucent substrate 10, and the opposite side is pressed by the touch pen 4 or the like. It is an input unit 1a.
  • a decorative print layer 23 composed of a plurality of layers is formed on the outer peripheral portion between the second translucent substrate 20 and the transparent conductive film 21.
  • the decorative printing layer 23 has three layers stacked.
  • a transparent thickened layer 24 made of a transparent resin material is formed in the inner peripheral region of the decorative print layer 23.
  • the transparent thickened layer 24 is formed to have a surface that is substantially flush with the surface of the decorative printed layer 23 on the transparent conductive film 21 side. That is, the side surface of the transparent conductive film 21 formed by the decorative printed layer 23 and the transparent thickened layer 24 in the second translucent substrate 20 is entirely flush with the printed circuit.
  • the portion 22 and the transparent conductive film 21 are directly formed into a film.
  • FIG. 4 shows an enlarged view near one side of FIG.
  • the decorative print layer 23 includes a first layer 23a formed on the surface of the second translucent substrate 20, a second layer 23b formed on the surface of the first layer 23a, It consists of three layers, a surface layer 23c formed on the surface of the second layer 23b and serving as the surface on the transparent conductive film 21 side. These layers can be formed by multiple screen printings.
  • the surface layer 23c and the second layer 23b are formed so that the inner peripheral end portion is closer to the outer periphery than the first layer 23a.
  • the transparent thickened layer 24 is formed in the inner peripheral side area
  • the transparent thickened layer 24 is formed by screen printing after the decorative print layer 23 is formed.
  • screen printing a mask is provided to cover a portion that is not printed.
  • an error occurs in the accuracy and position adjustment of the mask, and a gap 24a is formed between the transparent thickened layer 24 and the decorative print layer 23 at the end. May occur.
  • the inner peripheral end portion of the first layer 23a that is in contact with the human eye is closer to the inner side than the layer on the transparent conductive film 21 side where the end portion of the transparent thickened layer 24 faces. Since it is formed so as to be closer to the circumferential side, even if the gap 24a is generated, it can be prevented from being visually recognized from the outside by the first layer 23a, and the design property can be prevented from being impaired. .
  • the decorative print layer 23 is composed of three layers, but the decorative print layer 23 is not limited to three layers as long as it is composed of a plurality of layers. Further, in the present embodiment, the two layers of the second layer 23b and the surface layer 23c are formed so that the inner peripheral end portion is closer to the outer periphery than the first layer 23a. The surface layer 23c to be formed may be formed so that the inner peripheral end portion is closer to the outer periphery than the layer forming the second light-transmissive substrate 20 side.
  • the coordinate input device 1 flattens the unevenness formed on the second translucent substrate 20 by the decorative printing layer 23, so that the inner peripheral end of the decorative printing layer 23 is used. Since the transparent thickened layer 24 is formed over the inner peripheral region and the surface on which the transparent conductive film 21 is formed is flush, the layer formed on the surface of the second translucent substrate 20 The thickness does not exceed the thickness of the decorative printing layer 23, and it is possible to prevent the thinning from being hindered, and the pressing force necessary to bend the second translucent substrate 20 is suppressed. Therefore, the operability can be improved.
  • FIG. 5 shows a perspective view of a mobile phone 3 which is an example of an electronic apparatus in which the coordinate input device 1 of the present embodiment is used.
  • the coordinate input device 1 of the present embodiment is used in a mobile phone 3 as a component constituting the surface of the display device 2.
  • the decorative print layer 23 formed on the second translucent substrate 20 of the coordinate input device 1 can be viewed from the outside through the transparent second translucent substrate 20, and A part of the design of the mobile phone 3 is configured as a frame bordering the display unit.
  • the mobile phone 3 has been described as an electronic device in which the coordinate input device 1 is used.
  • the present invention is not limited to this, and is applicable to various electronic devices such as a digital camera, a PDA, a portable game machine, and a car navigation device. Can be done.
  • the decorative printing layer 23 and the transparent thickened layer 24 are formed by screen printing.
  • other printing methods such as gravure printing and offset printing may be used, a transfer method, Alternatively, the film may be formed by a vapor deposition method or the like.

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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

L'invention concerne un dispositif d'entrée de coordonnées permettant de réduire l'épaisseur tout en ayant une couche décorative imprimée, ainsi qu'un dispositif d'affichage doté de celui-ci et un dispositif électronique. Un premier substrat transparent (10) et un second substrat transparent souple (20), dont une des surfaces est la surface de travail, sont disposés en se faisant face avec une couche isolante (40) entre eux. Des membranes conductrices transparentes (11, 21) sont placées sur les surfaces intérieures de substrats transparents. Une couche décorative imprimée (23) est formée dans la région périphérique extérieure entre le second substrat transparent (20) et la couche conductrice transparente (21) placée sur la surface intérieure dudit second substrat transparent. Dans la région périphérique intérieure de la couche décorative imprimée (23), une couche transparente à épaisseur croissante (24) est formée avec une surface affleurant la surface de la couche décorative imprimée (23) faisant face à la couche conductrice transparente (21).
PCT/JP2010/060212 2009-06-29 2010-06-16 Système d'entrée de coordonnées, dispositif d'affichage doté de celui-ci et dispositif électronique WO2011001828A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-153446 2009-06-29
JP2009153446A JP2012181563A (ja) 2009-06-29 2009-06-29 座標入力装置とそれを備えた表示装置及び電子機器

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WO2011001828A1 true WO2011001828A1 (fr) 2011-01-06

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WO (1) WO2011001828A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103309511B (zh) * 2013-06-08 2016-04-13 深圳欧菲光科技股份有限公司 跨线结构及电子装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101350428B1 (ko) * 2013-06-21 2014-01-14 에스지글로벌 주식회사 터치스크린용 디스플레이 유닛 및 이의 제조방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005173970A (ja) * 2003-12-11 2005-06-30 Alps Electric Co Ltd 座標入力装置及びそれを備えた画像表示装置と電子機器
WO2008081710A1 (fr) * 2007-01-04 2008-07-10 Nissha Printing Co., Ltd. Écran de protection ayant une fonction d'écran tactile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005173970A (ja) * 2003-12-11 2005-06-30 Alps Electric Co Ltd 座標入力装置及びそれを備えた画像表示装置と電子機器
WO2008081710A1 (fr) * 2007-01-04 2008-07-10 Nissha Printing Co., Ltd. Écran de protection ayant une fonction d'écran tactile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103309511B (zh) * 2013-06-08 2016-04-13 深圳欧菲光科技股份有限公司 跨线结构及电子装置

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