WO2013021661A1 - Panneau tactile et son procédé de fabrication - Google Patents

Panneau tactile et son procédé de fabrication Download PDF

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Publication number
WO2013021661A1
WO2013021661A1 PCT/JP2012/050466 JP2012050466W WO2013021661A1 WO 2013021661 A1 WO2013021661 A1 WO 2013021661A1 JP 2012050466 W JP2012050466 W JP 2012050466W WO 2013021661 A1 WO2013021661 A1 WO 2013021661A1
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WO
WIPO (PCT)
Prior art keywords
main line
touch panel
patterns
pattern
wiring
Prior art date
Application number
PCT/JP2012/050466
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English (en)
Japanese (ja)
Inventor
岩瀬　雅之
和行 尾崎
Original Assignee
日本メクトロン株式会社
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Filing date
Publication date
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Publication of WO2013021661A1 publication Critical patent/WO2013021661A1/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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to a touch panel and a manufacturing method thereof, and more specifically to a capacitive touch panel and a manufacturing method thereof.
  • Patent Document 1 discloses a capacitive touch panel. This touch panel outputs signals from the Y sensor film 41 (X sensor film 42), the sensor electrode 32a (sensor electrode 32b) made of a transparent conductive material, and the sensor electrode 32a (sensor electrode 32b) to the outside. It consists of a conductor line 24 (extraction wiring) for extraction to the processing circuit.
  • the discharge property of the conductive paste discharged from the mesh opening of the screen plate (printing plate) (hereinafter, also simply referred to as “paste discharge property”) is the density of the extraction wiring. It depends on the condition. In other words, the paste dischargeability is non-uniform between the area where the number of extraction wires is large and the area where the number is small. For this reason, as shown in FIG. 5A, for example, in a region where three extraction wirings 103 are formed on the transparent substrate 102, the paste dischargeability is improved due to the characteristics of screen printing. A print state is obtained. On the other hand, as shown in FIG.
  • the printing state is improved in a region where the number of extracted wirings is small by diluting a small amount of high-viscosity Ag paste to enhance paste dischargeability.
  • the paste dischargeability is excessively increased, and there is a possibility that the extraction wirings are short-circuited.
  • the printing direction point for example, when printing is performed by moving the squeegee from the region where the number of extraction wires is small to the region where the number of extraction wires is large, the paste dischargeability tends to be improved in the region where the number of extraction wires is small. is there.
  • a so-called multi-face layout is often performed in which a plurality of touch panels are arranged in a sheet area serving as a processing unit of each manufacturing process. In this case, depending on the shape and configuration of the touch panel, all the touch panels may not be arranged in the same direction. For this reason, even if the printing state of the extraction wiring of the touch panel arranged so as to face in a certain direction is good, the printing state of the extraction wiring of the touch panel arranged so as to face in another direction is deteriorated.
  • the present invention has been made on the basis of the above technical recognition, and an object of the present invention is to provide a touch panel including a fine pattern extraction wiring with high connection reliability and a method for manufacturing the touch panel.
  • a discharge stabilization pattern that is provided in the wiring region and that makes the discharge property of the conductive paste from the mesh openings of the screen plate uniform when printing the first to nth extraction wirings by screen printing. It is characterized by providing.
  • the paste dischargeability is made uniform by the discharge stabilization pattern, a good printing state can be obtained even in the case of a fine pattern having a small L / S dimension of the extraction wiring. As a result, it is possible to obtain a touch panel including a fine pattern extraction wiring with high connection reliability.
  • FIG. 1 is a perspective view of a capacitive touch panel according to an embodiment of the present invention.
  • (A) And (B) is a top view of the extraction wiring of the touchscreen and discharge stabilization pattern which concern on one Embodiment.
  • (A) is a partial enlarged view of the extraction wiring and ejection stabilization pattern of the touch panel according to one embodiment, and (B) is one of the extraction wiring and ejection stabilization pattern of the touch panel according to the first modification.
  • FIG. (A) And (B) is a top view of the extraction wiring of the touchscreen and discharge stabilization pattern which concern on a 2nd modification.
  • (A) is a top view which shows the printing state of the extraction wiring in the area
  • (B) is the printing state of the extraction wiring in the area in which one extraction wiring was formed.
  • FIG. 1 is a perspective view of a capacitive touch panel according to an embodiment of the present invention. However, in FIG. 1, a discharge stabilization pattern which will be described in detail later is not shown.
  • the touch panel 1 takes out a transparent substrate 2, a transparent conductive pattern 3 for detecting the Y coordinate of the touch position, a transparent conductive pattern 4 for detecting the X coordinate of the touch position, and a signal of the transparent conductive pattern 3.
  • a wiring 6, an extraction wiring 7 for taking out a signal of the transparent conductive pattern 4, a Y detection terminal 8, an X detection terminal 9, and ejection stabilization patterns 10 and 11 are included.
  • the transparent substrate 2 has a sensing area 2A and a wiring area 2B located around the sensing area 2A.
  • the transparent substrate 2 is made of a translucent material (for example, a PET film).
  • the transparent conductive pattern 4 is formed on the surface of the transparent substrate 2, and the transparent conductive pattern 3 is formed on the back surface of the transparent substrate 2.
  • the transparent conductive pattern 3 and the transparent conductive pattern 4 are provided on the transparent substrate 2 so as to be electrically insulated from each other.
  • the transparent conductive patterns 3 and 4 are made of a transparent conductive material such as indium tin oxide (ITO) or polyethylenedioxythiophene (PEDOT).
  • a plurality of transparent conductive patterns 3 and 4 are provided in the sensing region 2A of the transparent substrate 2 in parallel with each other. More specifically, as shown in FIG. 1, the transparent conductive pattern 3 is provided in seven rows (first to seventh transparent conductive patterns 3) along the longitudinal direction (Y direction) of the transparent substrate 2. The transparent conductive patterns 4 are provided in 10 rows (first to tenth transparent conductive patterns 4) along the short direction (X direction) of the transparent substrate 2.
  • the configuration of the individual transparent conductive patterns 3 and 4 will be described.
  • the transparent conductive pattern 3 has a plurality of rhombus-shaped electrode portions 31 arranged in the Y direction, and a thin line-shaped connecting portion 32 that electrically connects the adjacent electrode portions 31 to each other.
  • the transparent conductive pattern 4 includes a plurality of rhombus-shaped electrode portions 41 arranged along the X direction, and a thin line-shaped connecting portion 42 that electrically connects the adjacent electrode portions 41 to each other.
  • the transparent conductive patterns 3 and 4 are not limited to the shape shown in FIG. 1, A desired shape can be employ
  • the Y detection terminal 8 and the X detection terminal 9 are respectively provided at the end of the transparent conductive pattern 3 and the end of the transparent conductive pattern 4 in order to contact the detection probe for conduction confirmation of the touch panel 1. .
  • whether or not the transparent conductive pattern 4 is healthy can be confirmed by conducting conduction between the X voltage detection terminal 9 and the external terminal portion 71 of the extraction wiring 7.
  • the transparent conductive patterns 3 and 4 it is possible to prevent the transparent conductive patterns 3 and 4 from being damaged when the conduction is confirmed. Further, depending on the material of the transparent conductive patterns 3 and 4, the contact resistance between the transparent conductive patterns 3 and 4 and the voltage detection probe in contact with the transparent conductive patterns 3 and 4 may increase. Therefore, it is desirable to provide the Y voltage detection terminal 8 and the X voltage detection terminal 9 from the viewpoint of reducing the contact resistance.
  • FIG. 2A shows a schematic configuration of the extraction wiring 7 and the ejection stabilization pattern 11.
  • FIG. 2B shows a schematic configuration of the extraction wiring 6 and the ejection stabilization pattern 10.
  • a plurality of extraction wirings 6 and 7 and discharge stabilization patterns 10 and 11 are provided in the wiring region 2B of the transparent substrate 2.
  • the extraction wirings 6 and 7 and the discharge stabilization patterns 10 and 11 are formed by curing a screen-printed Ag paste. Note that the extraction wirings 6 and 7 and the discharge stabilization patterns 10 and 11 may be formed by printing a metal such as gold (Au) or copper (Cu), or a conductive paste containing nanocarbon.
  • Each of the extraction wirings 6 and 7 provided in the wiring region 2B is provided so as to extract a signal of the corresponding transparent conductive pattern 3 and 4.
  • 10 extraction wirings 7 are provided (see FIG. 2A), and 7 extraction wirings 6 are provided. (See FIG. 2B).
  • the i-th lead-out wiring 7 includes a linear main line 72 extending along a direction (Y direction) orthogonal to the direction (X direction) in which the transparent conductive pattern 4 extends, and the main line. It has a connection part 73 that electrically connects one end of the part 72 and the i-th transparent conductive pattern 7, and an external terminal part 71 that is electrically connected to the other end of the main line part 72.
  • the extraction wiring 6 is the same as the extraction wiring 7. That is, as shown in FIG. 2B, the i-th lead-out wiring 6 includes a linear main line portion 62 extending along a direction (X direction) orthogonal to the direction (Y direction) in which the transparent conductive pattern 3 extends. And a connection part 63 that electrically connects one end of the main line part 62 and the i-th transparent conductive pattern 6, and an external terminal part 61 that is electrically connected to the other end of the main line part 62.
  • the L / S dimension of the main line portions 62 (72) arranged in parallel with each other is, for example, 100 ⁇ m or less / 100 ⁇ m or less.
  • connection parts 63 and 73 have connection pads 63 a and 73 a formed on the transparent conductive patterns 3 and 4.
  • the main line portions 72 of the first to tenth extraction wirings 7 constitute a main line group 72G composed of ten main line portions 72 at the end on the external terminal side.
  • the extraction wiring 6 is the same as the extraction wiring 7. As shown in FIG. 2B, there are five main line portions 62 of the first to fifth extraction wirings 6 except for the left two in FIG. 2B among the first to seventh extraction wirings 6.
  • the touch panel according to the present embodiment is provided in the wiring region 2B, and discharges the conductive paste from the mesh opening of the screen plate when the first to nth extraction wirings 6 and 7 are printed by screen printing.
  • Discharge stabilization patterns 10 and 11 are provided to make the properties uniform. “Uniformity” here means to reduce or eliminate the difference in paste dischargeability between a portion where the number of main line groups is large and a portion where the number of main line groups is small.
  • the ejection stabilization patterns 10 and 11 are provided in parallel with the main line portions 62 and 72 of the extraction wirings 6 and 7.
  • the ejection stabilization pattern 11 is electrically isolated from the extraction wiring 7.
  • the discharge stabilization pattern 10 is electrically isolated from the extraction wiring 6. Therefore, the ejection stabilization patterns 10 and 11 do not affect the electrical characteristics such as the resistance of the extraction wirings 6 and 7, and a signal equivalent to the case where the ejection stabilization pattern is not provided can be extracted from the extraction wiring.
  • one or more ejection stabilization patterns 10 and 11 are formed at least at a site where the number of main line groups 62G and 72G is one.
  • the paste dischargeability at the site where the number of main line groups 62G and 72G is one is improved, and the paste dischargeability is made uniform.
  • the line width of the ejection stabilization patterns 10 and 11 is preferably equal to the line width of the main line portions 62 and 72.
  • the ejection stabilization pattern may be provided so that the sum of the number of the discharges becomes n.
  • the number of main line groups 72G between the second extraction wiring 7 and the third extraction wiring 7 is eight. . Therefore, two discharge stabilization patterns 11 are provided to compensate for the decrease in the main line portion 72. Further, as can be seen from the enlarged view of the area A in FIG. 2A, the number of main line groups 72G between the ninth extraction wiring 7 and the tenth extraction wiring 7 is one, and therefore nine The discharge stabilization pattern 11 is provided.
  • the ejection stabilization pattern 10 is provided for the extraction wiring 6 so as to compensate for the decrease in the number of main line groups 62G as in the case of the extraction wiring 7.
  • FIG. 3A shows a plan view in which a region where the number of main line groups 72G is one in FIG. 2A is enlarged.
  • the line width (L1) of the discharge stabilization pattern 11 is the same as the line width (L2) of the main line portion 72 of the extraction wiring 7, and the discharge stabilization patterns 11
  • the space width (S1) which is the gap dimension is the same as the space width (S2) between the main line portions 72 of the lead-out wiring 7.
  • the discharge stabilization pattern 11 When the line width of the discharge stabilization pattern 11 is smaller than the line width of the main line portion 72, the discharge stabilization pattern 11 is required to have higher printing resolution than the main line portion 72. As a result, the printing conditions and the like become complicated, and there arises a problem that the degree of printing difficulty increases.
  • the discharge amount of the conductive paste in the region where the discharge stabilization pattern 11 is formed increases.
  • the discharge amount of the conductive paste in the portion where 72 is formed is also affected. As a result, there arises a problem that the main line portion 72 is formed thicker than the design.
  • the L / S dimension of the ejection stabilization pattern 11 is the same as the L / S dimension of the main line portion 72 of the extraction wiring as shown in FIG.
  • the line width (L1) of the ejection stabilization pattern 11 is 100 ⁇ m
  • the L / S dimension in the discharge stabilization pattern 10 is desirably the same as the L / S dimension of the main line portion 62 of the extraction wiring 6.
  • L is the length of the ejection stabilization pattern
  • D is the distance between the connection portions
  • d is the smaller value of the line width of the connection portion and the line width of the main line portion.
  • the length L of the ejection stabilization pattern satisfy the formula (1), it is possible to sufficiently improve the paste ejection property while preventing a short circuit between the printing patterns.
  • the ejection stabilization pattern 11 is arranged such that the midpoint in the length direction coincides with the midpoint between the adjacent connecting portions 73.
  • both ends in the longitudinal direction of the discharge stabilization patterns 10 and 11 have arcuate (semicircular) outlines.
  • the discharge stabilization patterns 10 and 11 the discharge property of the conductive paste from the mesh plate openings of the screen plate is made uniform, and the printed state of the extraction wiring is independent of the number of main line groups. Can be made uniform. As a result, a good printing state can be obtained in all the areas where the lead-out wiring is formed. Even in the region where the number of main line groups where the paste dischargeability is most reduced is one, it is possible to obtain a good printing state in which there is no omission or transfer failure of the conductive paste.
  • a touch panel including a fine pattern extraction wiring with high connection reliability it is possible to obtain a highly reliable touch panel that can reliably transmit the position detection signal extracted from the transparent conductive pattern by the extraction wiring to an external arithmetic processing circuit connected to the touch panel.
  • the ejection stabilization pattern is provided in the vacant area of the wiring area, it is not necessary to increase the size of the wiring area in order to provide the ejection stabilization pattern. Therefore, it is possible to obtain a reliable touch panel by providing an ejection stabilization pattern without increasing the width of the frame of the display screen on which the touch panel is mounted, and thus without affecting the design and visibility of the touch panel. Can do.
  • FIG. 3B is an enlarged view of a part of the extraction wiring 7 and the discharge stabilization pattern 11, and the display area corresponds to FIG. 3A.
  • the ejection stabilization pattern 11 is provided outside the extraction wiring 7. That is, in this modification, the ejection stabilization pattern 11 is provided on the opposite side of the transparent conductive pattern 4 with respect to the main line portion 72 of the extraction wiring.
  • the discharge stabilization pattern 10 may be provided on the side opposite to the transparent conductive pattern 3 with respect to the main line portion 62 of the extraction wiring.
  • the ejection stabilization pattern can be provided without increasing the size of the wiring region.
  • two ejection stabilization patterns 11 are provided in a portion where the number of main line groups 72G is two or less, and one is provided in a portion where the number of main line groups 72G is three or more.
  • two ejection stabilization patterns 10 are provided in a region where the number of main line groups 62G is two or less. One is provided at a site where the number is three or more.
  • At least two main line groups 62G and 72G between the parts 63 and 73 are provided in one part, and at least one is provided in the two parts.
  • at least two ejection stabilization patterns are provided in one or two parts, and at least one is provided in three or more parts.
  • the same effect as that of the above-described embodiment can be obtained by using a smaller number of ejection stabilization patterns than the embodiment described with reference to FIG.
  • a transparent substrate 2 having a sensing area 2A and a wiring area 2B is prepared.
  • a PET (polyethylene terephthalate) film that is excellent in translucency and low in material cost can be suitably used.
  • Other applicable materials include transparent films such as polyethylene naphthalate (PEN), polycarbonate (PC) and transparent polyimide (transparent PI), and transparent glass plates.
  • PEN polyethylene naphthalate
  • PC polycarbonate
  • transparent PI transparent polyimide
  • the transparent conductive pattern 3 (4) is formed by first applying a transparent conductive material on the surface of the transparent substrate 2 to form a transparent conductive film, and then etching the transparent conductive film by etching. It is formed by processing to the shape of.
  • the transparent conductive pattern 3 is formed on one surface of the transparent substrate 2, and then the transparent conductive pattern 4 is formed on the other surface of the transparent substrate 2.
  • the transparent conductive pattern 3 and 4 are formed on the first and second transparent substrates, respectively.
  • the surfaces on which the transparent conductive pattern is not formed may be bonded together.
  • the transparent conductive pattern 3 and the transparent conductive pattern 4 may be formed on the same surface of the transparent substrate 2.
  • one of the transparent conductive pattern 3 and the transparent conductive pattern 4 is formed so as to have an electrode part and a connecting part as shown in FIG. 1, and only the electrode part is formed for the other pattern.
  • the connection part of the other pattern is formed on the small piece of the insulator provided on the transparent substrate 2 so as to straddle the connection part of the one pattern, and the electrode parts of the other pattern are connected (jumper connection). )
  • Applicable transparent conductive materials include inorganic transparent conductive materials typified by ITO, and organic transparent conductive materials typified by polyethylene dioxythiophene (PEDOT), polyaniline, polypyrrole, and the like.
  • the transparent conductive patterns 3 and 4 can also be formed by a printing method using an ink that imparts printing suitability to an organic transparent conductive material.
  • Ag paste is printed on the wiring region 2B by screen printing, and the printed Ag paste is heated and cured to form the first to nth extraction wirings 6 (7).
  • the Ag paste used here it is desirable to use a relatively high viscosity type (for example, 20 Pa ⁇ s or more).
  • a conductive paste containing metal such as gold (Au) or copper (Cu), or nanocarbon may be used.
  • the first to n-th extraction wirings 6 (7) are arranged so that the main line 62 (72) of the first to n-th extraction wirings 6 (7) is n at the end on the external terminal side.
  • a main line group 62G (72G) composed of main lines is formed, and the number of main line groups decreases by one as the main line group crosses each side of the first to n-th transparent conductive patterns. To form.
  • the ejection stabilization pattern 10 (11) is also formed in the wiring region 2B together with the extraction wiring 6 (7). More specifically, the ejection stabilization pattern 10 (11) is arranged in parallel with the main line portion 62 (72) and at the first to n-th extractions at a portion where the number of main line groups 62G (72G) is one.
  • the wiring 6 (7) is formed so as to be electrically insulated.
  • the discharge stabilization pattern formed in this step is the form described in the above-described embodiment, the first modification, and the second modification with respect to the number, arrangement position, L / S dimension, length, and the like. Can be formed according to.
  • Y detection terminal 8 (X detection terminal 9) is also printed and formed by screen printing in this process.
  • the ejection stabilization pattern can be printed and formed together in the process of printing the extraction wiring.
  • the ejection stabilization pattern and the extraction wiring can be simultaneously formed by one printing process using one type of screen plate. For this reason, a touch panel can be manufactured without complicating the manufacturing process.

Abstract

L'invention concerne un panneau tactile équipé d'un câblage amovible à motif fin ayant une fiabilité de connexion élevée, et un procédé de fabrication du panneau tactile. Un panneau tactile (1) d'un mode de réalisation de la présente invention est pourvu : d'un substrat transparent (2) comportant une zone de détection (2A) et une zone de câblage (2B); de premier à nième motifs conducteurs transparents (3, 4) formés parallèles les uns aux autres; de premier à nième câblages amovibles (6, 7) qui sont composés par durcissement d'une pâte conductrice imprimée par sérigraphie. Les iième motifs conducteurs transparents (i = 1 à n) comportent des sections de ligne principale (62, 72) s'étendant le long d'une direction qui coupe à des angles droits la direction dans laquelle les motifs conducteurs transparents (3, 4) s'étendent, des sections de connexion (63, 73) qui connectent électriquement des extrémités des sections de ligne principale et les iième motifs conducteurs transparents, et des sections de borne externe (61, 71) qui sont connectées électriquement aux autres extrémités des sections de ligne principale. Le panneau tactile (1) est également pourvu, au niveau de la zone de câblage (2B), de motifs de stabilisation d'évacuation (10, 11) pour permettre, lors d'une impression du câblage amovible (6, 7) par sérigraphie, à une pâte conductrice, provenant d'une section d'ouverture de maille d'un bloc de sérigraphie, d'être évacuée uniformément.
PCT/JP2012/050466 2011-08-10 2012-01-12 Panneau tactile et son procédé de fabrication WO2013021661A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011175235A JP2013037629A (ja) 2011-08-10 2011-08-10 タッチパネル及びその製造方法
JP2011-175235 2011-08-10

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WO2013021661A1 true WO2013021661A1 (fr) 2013-02-14

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Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
JP5643862B2 (ja) * 2013-02-27 2014-12-17 株式会社ニューギン 遊技機
JP6122672B2 (ja) * 2013-03-19 2017-04-26 グンゼ株式会社 投影型静電容量方式タッチパネル用フィルムの製造方法
KR101453020B1 (ko) * 2013-06-18 2014-10-22 크루셜텍 (주) 정전기 보호 기능을 가진 터치 검출 장치
KR102430320B1 (ko) * 2017-12-11 2022-08-09 삼성디스플레이 주식회사 터치 센서 및 이를 포함하는 터치 표시 장치
KR102150881B1 (ko) 2019-03-21 2020-09-02 동우 화인켐 주식회사 터치센서 및 이를 형성하는 노광 마스크

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JPS567492A (en) * 1979-06-29 1981-01-26 Hitachi Ltd Screen printed metal mask
JPS5672997A (en) * 1979-11-20 1981-06-17 Toppan Printing Co Ltd Fine-line printed article and printing plate
JPH1140698A (ja) * 1997-07-22 1999-02-12 Shinko Electric Ind Co Ltd 配線基板
JP2008241856A (ja) * 2007-03-26 2008-10-09 Epson Imaging Devices Corp 液晶装置及び電子機器
JP2010122951A (ja) * 2008-11-20 2010-06-03 Rohm Co Ltd 入力装置
JP2011028474A (ja) * 2009-07-24 2011-02-10 Alps Electric Co Ltd 入力装置及びその製造方法
JP2011048541A (ja) * 2009-08-26 2011-03-10 Tdk Corp タッチパネル付き表示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567492A (en) * 1979-06-29 1981-01-26 Hitachi Ltd Screen printed metal mask
JPS5672997A (en) * 1979-11-20 1981-06-17 Toppan Printing Co Ltd Fine-line printed article and printing plate
JPH1140698A (ja) * 1997-07-22 1999-02-12 Shinko Electric Ind Co Ltd 配線基板
JP2008241856A (ja) * 2007-03-26 2008-10-09 Epson Imaging Devices Corp 液晶装置及び電子機器
JP2010122951A (ja) * 2008-11-20 2010-06-03 Rohm Co Ltd 入力装置
JP2011028474A (ja) * 2009-07-24 2011-02-10 Alps Electric Co Ltd 入力装置及びその製造方法
JP2011048541A (ja) * 2009-08-26 2011-03-10 Tdk Corp タッチパネル付き表示装置

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