WO2011024903A1 - 圧力検出ユニット - Google Patents
圧力検出ユニット Download PDFInfo
- Publication number
- WO2011024903A1 WO2011024903A1 PCT/JP2010/064498 JP2010064498W WO2011024903A1 WO 2011024903 A1 WO2011024903 A1 WO 2011024903A1 JP 2010064498 W JP2010064498 W JP 2010064498W WO 2011024903 A1 WO2011024903 A1 WO 2011024903A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- detection unit
- pressure detection
- pressure
- load
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
-
- 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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
- G06F3/04142—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate
Definitions
- the present invention relates to a pressure detection unit used in an information input device or the like that enables information input by a user pressing on a panel member.
- Patent Document 1 Conventionally, a pressure-sensitive sensor has been known as having a pressure detection function for detecting pressure (see Patent Document 1).
- the pressure-sensitive sensor described in Patent Document 1 is a method in which plastic films in which electrodes and a pressure-sensitive ink layer are laminated in order are bonded to each other via an insulating layer having adhesive layers on the front and back surfaces. It is a thing.
- the present applicant has filed an application for a configuration that suppresses a decrease in visibility of the display unit when the pressure-sensitive sensor of Patent Document 1 is employed in a touch panel that requires visibility ( (See Japanese Patent Application No. 2008-330288 and WO2010 / 074116).
- the pressure-sensitive sensor member of the touch panel described in Japanese Patent Application No. 2008-330288 (WO2010 / 074116) has the same configuration as that of Patent Document 1 in the portion laminated in the vertical direction, but as shown in FIG.
- the pair of electrodes 21a and 22a are arranged in a frame shape along the edges of the plastic films 21A and 22A, and the pressure-sensitive inks 23a and 23b are scattered along the edges of the plastic films 21A and 22A. ing.
- an insulating material 30A is disposed in the middle of the two layers of the adhesive material 30B so that the electrode 21a and the electrode 22a are not energized.
- the pressure-sensitive sensor includes bumps 24a as load transmitting members 24 on the outer surface of the plastic film 22A.
- the pressure-sensitive ink 23b portion of the plastic film 22A is supported from below, and the applied pressing force is used for deformation of the plastic film 22A without being dispersed. Can be reliably transmitted as a generated force.
- an object of the present invention is to provide a pressure detection unit including a load transmission member that functions stably over a long period of time.
- the first characteristic configuration of the pressure detection unit includes a first substrate and a second substrate that are arranged to face each other and receive a load from the outside, and between the first substrate and the second substrate, and A pressure detection unit including a pair of electrodes disposed on the first substrate and the second substrate, and a conductive pressure-sensitive ink disposed between the pair of electrodes and having electrical characteristics that are changed by an external load; A load transmission member disposed between at least one of the first substrate and the pressure detection unit and between the second substrate and the pressure detection unit and transmitting the load while concentrating the load on the pressure detection unit; It is in the point with.
- the load transmitting member is disposed at least one of the first substrate and the pressure detecting unit and between the second substrate and the pressure detecting unit, the load transmitting member is disposed on the outer surface of the substrate of the pressure detecting unit. No substrate is interposed between the load transmitting member and the pressure detection unit as in the case where the substrate is provided. That is, when an external load is applied to the pressure detection unit, the load transmission member directly supports the pressure detection unit and receives the load in a concentrated manner without dispersing the load, and reliably transmits the load to the pressure-sensitive ink. . Since the load transmission member directly supports the pressure detection unit, the pressure detection unit is more reliably pressed compared to the case where the load transmission member is provided on the outer surface of the substrate of the pressure detection unit. Thus, the measurement accuracy of the pressure detection unit can be improved.
- the load transmitting member is disposed at least one of the first substrate and the pressure detection unit and between the second substrate and the pressure detection unit, the load transmitting member is not exposed to the outside of the pressure detection unit. That is, since the load transmission member is arranged in a form protected from the external member by the substrate, the load transmission member is not rubbed against the external member and peeled off. Thus, as a result, the durability of the load transmission member of the pressure detection unit can be improved.
- the pressure detection unit and the load transmission member are disposed in the opposing region of the first substrate and the second substrate, the load transmission member, the electrode, and the pressure sensitive ink are sequentially disposed on the substrate. That is, since the substrate portion on one side of the pressure detection unit is manufactured in a series of steps, the positional displacement of each layer of the load transmitting member, the electrode, and the pressure-sensitive ink on the substrate hardly occurs. In addition, since it is not necessary to separately form a load transmission member on the outer surface of the substrate of the pressure detection unit, the manufacturing process is simplified. As a result, the productivity of the pressure detection unit including the load transmission member can be improved. it can.
- a second characteristic configuration of the pressure detection unit according to the present invention is that the thickness of the first substrate is different from the thickness of the second substrate.
- the thinner substrate can be deformed, and the shape of the thinner substrate side of the pressure detection unit can be easily made convex to reduce the contact area between the pressure detection unit and the external member.
- the contact area between the pressure detection unit and the external member becomes small, an external load is concentrated and transmitted to the pressure sensitive ink of the pressure detection unit. As a result, the measurement accuracy of the pressing force of the pressure detection unit can be improved.
- the load transmission member is disposed between the first substrate and the pressure detection unit and between the second substrate and the pressure detection unit. It is in a certain point.
- the load transmitting member is arranged on both the first substrate side and the second substrate side, and the pressure detection unit transmits the pressing force from the outside more reliably by the upper and lower load transmitting members. Will be.
- a fourth characteristic configuration of the pressure detection unit according to the present invention is that the load transmission member is formed to have a larger cross-sectional area as the distance from the inner surface of the first substrate or the second substrate increases.
- the load transmission member allows a change in posture between the pressure detection unit having the electrode and the pressure-sensitive ink and the external member pressing the pressure detection unit to some extent. Therefore, when the posture change between the pressure detection unit and the external member is small, the load transmission member can suppress the dispersion of the external load to other than the pressure detection unit.
- a fifth characteristic configuration of the pressure detection unit according to the present invention is that the pressure-sensitive ink is scattered and arranged along an edge of the first substrate or the second substrate.
- the pressure-sensitive ink is disposed only at a position that receives an external load, and the pressure-sensitive ink is not unnecessarily disposed on the substrate of the pressure detection unit.
- a sixth characteristic configuration of the pressure detection unit according to the present invention is that the pressure-sensitive ink is disposed so as to cover at least one of the pair of electrodes.
- the conductive pressure-sensitive ink is interposed between the electrodes of the pair of electrodes disposed between the first substrate and the second substrate so as to cover at least one of the pair of electrodes.
- the intermediate layer (insulating layer) of the member became unnecessary. As a result, it was possible to reduce the thickness of the adhesive member and reduce the thickness of the entire pressure detection unit.
- the pair of electrodes is disposed on either the first substrate or the second substrate, and the pressure-sensitive ink is disposed on the first substrate or the second substrate.
- the second substrate is arranged so as to cover the pair of electrodes on the other side of the second substrate.
- the electrode layer is one layer, the thickness of the pressure detection unit is reduced, and as a result, the pressure detection unit can be thinned.
- a signal in a desirable detection range can be obtained by controlling the contact area with the pressure-sensitive ink by forming a pair of electrodes in a comb shape, a spiral shape, or the like.
- An eighth characteristic configuration of the pressure detection unit according to the present invention is arranged in a region where the first substrate and the second substrate are opposed to each other, and has an adhesive property to connect the first substrate and the second substrate to each other.
- An adhesive member that adheres in a state where a pair of electrodes and the pressure-sensitive ink are in contact with each other is provided, and the adhesive member attracts the first substrate and the second substrate to apply an initial load to the pressure-sensitive ink. It is in the point.
- the first substrate and the second substrate are attracted to each other by the adhesive member, and the load is applied to the pressure-sensitive ink in advance, so that the initial unstable detection value is automatically eliminated, and the detection value for the load (
- the error range of the resistance value can be made extremely small. For this reason, even if it is a case where a pressure detection unit detects the pressing force of a light load, the measurement accuracy of pressing force can be improved.
- the first substrate and the second substrate are fused so that the pair of electrodes and the pressure-sensitive ink are in contact with each other. And the second substrate are attracted to each other to apply an initial load to the pressure-sensitive ink.
- the first substrate and the second substrate are attracted to each other by fusing the first substrate and the second substrate, and a load is applied to the pressure-sensitive ink in advance. Therefore, the initial unstable detection value is automatically eliminated, and the measurement accuracy of the pressing force is improved even when the pressure detection unit detects a pressing force with a light load. Moreover, since it is not necessary to provide an adhesive member between the first substrate and the second substrate, the structure of the pressure detection unit itself can be simplified.
- FIG. 2 is a cross-sectional view taken along the line II-II in FIG. These are figures which show arrangement
- FIG. 4 is a sectional view taken along line IV-IV in FIG. These are exploded perspective views of the pressure detection unit according to the present invention.
- FIG. 6 is a sectional view taken along line VI-VI in FIG. These are figures which show the operation state of a pressure detection unit. These are figures which show the pressure detection unit of another embodiment. These are figures which show the pressure detection unit of another embodiment. These are figures which show arrangement
- FIG. 15 is an XV-XV sectional view of FIG. 14.
- the information input device 1 includes a housing 2 having an opening 2A and the like formed on the front surface, a panel member 4 having a contact-type information input function, and a pressing operation force on the panel member 4.
- Pressure detecting means 20 including a pressure detecting unit 20 for detecting.
- the pressure detection means includes a pressure detection unit 20 provided across the panel member 4 and the support portion 2 b of the housing 2, and an output signal from the pressure detection unit 20. It comprises a signal processing circuit (not shown) for processing. If a panel member 4 having a so-called touch input function for detecting an XY coordinate serving as an operation position based on a user's touch operation on the panel member 4 is employed, for example, pressure detection and XY Coordinates can be detected only by the pressure detection unit, and the convenience of the apparatus is increased.
- a device having a touch input function can be selected from a resistance film method, a capacitance method, an electromagnetic induction method, and the like.
- FIG. 3 is a diagram showing the arrangement of the pressure detection unit 20 in the information input device 1
- FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3
- FIG. 5 is an exploded perspective view of the pressure detection unit 20.
- FIG. 4 is a sectional view taken along line VI-VI in FIG.
- the pressure detection unit 20 used in the information input device 1 includes a first substrate 21 and a second substrate 22 that are arranged opposite to each other and receive a load from the outside in a frame shape.
- the inner diameters of the frame-like first substrate 21 and the second substrate 22 are adjusted to the dimensions of the opening 2A, and the outer diameter is adjusted to an XY coordinate detection device (not shown) provided separately.
- the upper electrode 21a is arranged in a frame shape.
- a lower electrode 22a is arranged in a frame shape so as to face the upper electrode 21a.
- an upper pressure-sensitive ink 23a is arranged in a frame shape so as to cover the upper electrode 21a.
- the lower pressure-sensitive ink 23 b is arranged on the second substrate 22 in a frame shape so as to cover the lower electrode 22 a and face the upper pressure-sensitive ink 23 a.
- the pressure-sensitive inks 23a and 23b may be disposed so as to cover at least one of the pair of electrodes 21a and 22a.
- the width of the pressure-sensitive inks 23a and 23b arranged in the frame shape is larger than the width of the pair of electrodes 21a and 22a arranged in the frame shape.
- the widths of the electrodes 21a and 22a and the pressure-sensitive inks 23a and 23b may be the same as long as it is considered that the electrodes 21a and 22a are not in direct contact with each other.
- the pressure detection unit 23 includes the upper electrode 21a formed on the first substrate 21, the lower electrode 22a formed on the second substrate 22 so as to face the upper electrode 21a, and the upper electrode 21a.
- the upper pressure-sensitive ink 23a covers the lower electrode 22a so as to face the upper pressure-sensitive ink 23a.
- a plurality of bumps 24a are arranged as load transmitting members 24 between the second substrate 22 and the lower electrode 22a.
- the bump 24a is formed so that its installation area is equal to or less than the installation area of the electrode 22a.
- a thermosetting resin or an ultraviolet curable resin is printed or applied and cured, a film or a resin plate cut according to the size of the pressure detection unit 23 and bonded, a PE foam or a urethane foam And the like.
- the height of the bump 24a is, for example, 50 to 200 ⁇ m (including the thickness of the adhesive layer for adhering to the second substrate).
- the bump 24a is formed on the second substrate 22 by using, for example, a printing process.
- 24a, lower electrode 22a, and lower pressure-sensitive ink 23b are arranged in this order.
- the substrate portion on one side of the pressure detection unit 20 is formed in a series of steps, misalignment of the layers of the bump 24a, the lower electrode 22a, and the lower pressure-sensitive ink 23b on the second substrate 22 is unlikely to occur.
- the adhesive member 30 is disposed in the peripheral region of the pressure detection unit 23 in the opposed region between the first substrate 21 and the second substrate 22.
- the adhesive member 30 is provided in a state sandwiched between the first substrate 21 and the second substrate 22, and attracts the first substrate 21 and the second substrate 22 to bias them toward the pressure-sensitive inks 23a and 23b. Thus, an initial load is applied.
- the adhesive member 30 is, for example, an inelastic spacer (including an adhesive layer with the substrates 21 and 22, or an adhesive alone) having a thickness smaller than that of the pressure detection unit 23, and the first substrate 21 or the second substrate.
- the adhesive member 30 may be a sticky adhesive or double-sided adhesive material having elasticity, or various elastic members (substrates) such as rubber, tension coil springs, leaf springs, etc. that are set to exert a tensile force. 21 and 22). 4 and 6, the pressure detection unit 23 and the adhesive member 30 are separated from each other, but the pressure detection unit 23 and the adhesive member 30 may partially contact each other.
- the adhesive member 30 is configured such that its thickness is smaller than the thickness of the pressure detection unit 23 in a free state.
- a force for maintaining the original thickness acts on the arranged adhesive member 30, and this force acts in a direction in which the first substrate 21 and the second substrate 22 are brought close to each other.
- an initial load is applied to the pressure-sensitive inks 23a and 23b as a result. Has been granted.
- the operation of the pressure detection unit 20 attached to the information input device 1 will be described.
- the upper electrode 21a and the lower electrode 22a are connected to a connector (not shown), and the connector is connected to a load detection unit (not shown) built in the information input device. .
- the change of resistance applied to the upper pressure-sensitive ink 23a and the lower pressure-sensitive ink 23b of the pressure detection unit 23 of the pressure detection unit 20 when the panel member 4 is pressed is detected.
- the external force applied to the pressure-sensitive inks 23a and 23b can be detected, and the load on the panel member 4 can be detected.
- the pressure detection unit 20 is provided with the adhesive member 30 that attracts the first substrate 21 and the second substrate 22, the pressure-sensitive inks 23a and 23b are initially set before the panel member 4 is pressed. A load is applied. This cancels out the load range from no load to the stable detection load with large variations in the detection value (resistance value). Therefore, when the panel member 4 is subsequently pressed, the value detected by the pressure detection unit 23 is used. It can be used for information input control as it is.
- a bump 24a is arranged between the second substrate 22 and the pressure detection unit 23, that is, between the second substrate 22 and the electrode 22a, when an external load is applied to the pressure detection unit 23
- the bump 24a supports the lower pressure-sensitive ink 23b from below, concentrates the load, and transmits it to the lower pressure-sensitive ink 23b (FIG. 7).
- the upper pressure-sensitive ink 23a and the lower pressure-sensitive ink 23b are reliably pressed against each other, and the pressure measurement accuracy of the pressure detection unit 20 can be improved.
- the bumps 24a are not exposed on the outer surface of the second substrate 22, the bumps 24a are not peeled off from the pressure detection unit 20 by rubbing against the external member.
- the first substrate 21 and the second substrate 22 are, for example, films, etc., and the material is a material that can be used for a flexible substrate, for example, polyethylene terephthalate, polystyrene resin, polyolefin resin, ABS resin, AS resin, acrylic. And general-purpose resins such as AN resins and AN resins.
- general-purpose engineering resins such as polystyrene resins, polycarbonate resins, polyacetal resins, polycarbonate-modified polyphenylene ether resins, polybutylene terephthalate resins, ultrahigh molecular weight polyethylene resins, polysulfone resins, polyphenylene sulfide resins, polyphenylene oxide resins, Super engineering resins such as polyarylate resin, polyetherimide resin, polyimide resin, liquid crystal polyester resin, and polyallyl heat-resistant resin can also be used.
- a metal such as gold, silver, copper, or nickel, or a conductive paste such as carbon can be used.
- these forming methods include printing methods such as screen printing, offset printing, gravure printing, and flexographic printing, and a photoresist method.
- the upper electrode 21a and the lower electrode 22a can be formed by attaching a metal foil such as copper or gold.
- the upper electrode 21a and the lower electrode 22a may be formed by forming an electrode pattern with a resist on an FPC plated with a metal such as copper and etching a portion of the metal foil that is not protected by the resist. it can.
- the electrodes may be formed by combining or laminating the formation methods and materials listed here.
- the composition constituting the upper pressure-sensitive ink 23a and the lower pressure-sensitive ink 23b of the pressure detection unit 23 is made of a material whose electric characteristics such as an electric resistance value change according to an external force.
- a quantum tunnel phenomenon composite material (trade name “QTC”) manufactured by Peratech of England can be used.
- QTC quantum tunnel phenomenon composite material
- the upper pressure-sensitive ink 23a and the lower pressure-sensitive ink 23b can be disposed on the first substrate 21 and the second substrate 22 by application.
- a printing method such as screen printing, offset printing, gravure printing, or flexographic printing can be used.
- the pressure sensitive ink may be applied to only one side of the first substrate 21 or the second substrate 22.
- the pressure detection unit 20 is attached to the lower surface of the peripheral edge 4A of the panel member 4 of the information input device 1 with an adhesive layer such as an adhesive such as glue or a double-sided adhesive tape. It is arranged in a frame shape so as to be concealed by the decoration part. Therefore, each member constituting the pressure detection unit 20 is not limited to being made of a transparent material, and may be made of a colored material. Moreover, you may arrange
- the bump 24 a is preferably formed so that the cross-sectional area decreases as the distance from the outer surface of the installed second substrate 22 increases. This allows a certain degree of posture change between the pressure-sensitive inks 23a and 23b and the external member (for example, a panel member) that presses the pressure-sensitive inks 23a and 23b. Therefore, when the change in posture between the pressure-sensitive inks 23a and 23b and the external member is small, the bumps 24a suppress the dispersion of external loads other than the pressure-sensitive inks 23a and 23b.
- the bump 24a may be a non-elastic member or an elastic member.
- the thicknesses of the first substrate 21 and the second substrate 22 are the same, but the thickness of the first substrate 21 and the thickness of the second substrate 22 may be different.
- the thickness of the second substrate 22 is configured to be smaller than the thickness of the first substrate 21. In this way, the thin second substrate 22 is more easily deformed than the first substrate 21, and the pressure detection unit 20 in which the bumps 24 a disposed between the first substrate 21 and the second substrate 22 protrude in a convex shape downward. Is easily formed.
- the contact area between the pressure detection unit 20 and the support part 2b that is an external member is reduced, and the load from the support part 2b is reduced by the pressure of the pressure detection unit 20.
- the concentrated ink is transmitted to the pressure-sensitive ink 23b. As a result, the measurement accuracy of the pressing force of the pressure detection unit 20 can be improved.
- the load transmission member 24 is disposed only between the second substrate 22 and the pressure detection unit 23, but the load transmission member 24 is disposed between the first substrate 21 and the pressure detection unit 23. You may arrange
- the pressure-sensitive inks 23a and 23b are also arranged in a frame shape with respect to the electrodes 21a and 22a arranged in a frame shape. However, as shown in FIG. The pressure-sensitive inks 23a and 23b may be interspersed with the electrodes 21a and 22a.
- the electrodes 21a and 22a and the pressure-sensitive inks 23a and 23b are both arranged in a frame shape. However, as shown in FIG. 11, the electrodes 21a and 22a and the pressure-sensitive ink are placed on the first substrate. 21 or a part of the peripheral edge of the second substrate 22 may be arranged continuously.
- the pressure detection unit 23 includes a pair of electrodes 21b and 21c arranged on either the first substrate 21 or the second substrate 22, and the first substrate 21 as shown in FIG.
- the pressure-sensitive ink 23b may be disposed on the other side of the second substrate 22 so as to cover the pair of electrodes 21b and 21c.
- the electrode layer becomes one layer, the thickness of the pressure detection unit 23 is further reduced, and as a result, the pressure detection unit 20 can be thinned.
- a signal in a desired detection range can be obtained by controlling the contact area with the pressure-sensitive ink 23b by forming the pair of electrodes 21b and 21c in a comb shape, a spiral shape, or the like.
- the adhesive member is disposed between the first substrate 21 and the second substrate 22 to apply the initial load to the pressure-sensitive inks 23a and 23b.
- the first substrate 21 and the second substrate 22 are fused together so that the pair of electrodes 21a, 22a and the pressure-sensitive inks 23a, 23b are in contact with each other, so that an initial load is applied to the pressure-sensitive inks 23a, 23b. It may be.
- the pressure detection unit according to the present invention is effectively used in electronic devices such as mobile phones, smartphones, PDAs, car navigation devices, digital cameras, digital video cameras, game machines, and tablets, and is made multifunctional and operated as electronic devices. It can be used to improve the performance.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Push-Button Switches (AREA)
Abstract
Description
まず、本発明に係る圧力検出ユニット20を装着する情報入力装置1の構成について、図1乃至図7に基づいて説明する。図1に示すように、情報入力装置1は、前面に開口部2A等が形成された筐体2と、接触式の情報入力機能を備えたパネル部材4と、このパネル部材4に対する押圧操作力を検出するための圧力検出ユニット20を含む圧力検出手段とを備えている。
バンプ24aは、図4に示すように、設置された第2基板22の外面から遠ざかるほど断面積が小さくなるよう形成されている方が好ましい。こうすると、感圧インク23a,23bと、感圧インク23a,23bを押圧する外部部材(例えばパネル部材等)との姿勢変化をある程度許容する。したがって、感圧インク23a,23bと外部部材との姿勢変化が小さい場合には、バンプ24aにより外部からの荷重の感圧インク23a,23b以外への分散が抑えられる。なお、バンプ24aは非弾性部材、弾性部材のいずれであってもよい。
(1)上記の実施形態では、第1基板21と第2基板22の厚みは同じであるが、第1基板21の厚みと第2基板22の厚みとを異ならせてもよい。図8では、第2基板22の厚みを第1基板21の厚みより薄くして構成している。こうすると、厚みの薄い第2基板22は第1基板21より変形されやすくなり、第1基板21と第2基板22の間に配置されるバンプ24aが下部に凸状に出っ張った圧力検出ユニット20が形成され易くなる。圧力検出ユニットの第2基板22の側の形状を凸状にすると、圧力検出ユニット20と外部部材である支持部2bとの接触面積が小さくなり、支持部2bからの荷重が圧力検出ユニット20の感圧インク23bに集中して伝達される。その結果、圧力検出ユニット20の押圧力の測定精度を向上させることができる。
出部23を用いて説明したが、圧力検出部23は、図12に示すように、第1基板21あるいは第2基板22の何れか一方に配置された一対の電極21b,21cと、第1基板21あるいは第2基板22の他方に当該一対の電極21b,21cを覆うように感圧インク23bを配置する構成であってもよい。こうすると、電極層が1層になるので圧力検出部23の厚さがさらに薄くなり、結果として圧力検出ユニット20の薄型化を図ることができる。この場合、一対の電極21b,21cを櫛歯状、渦巻状等に形成して感圧インク23bとの接触面積を制御することで、望ましい検出範囲の信号を得る事ができる。
Claims (9)
- 対向配置されて、外部からの荷重を受ける第1基板及び第2基板と、
前記第1基板と前記第2基板との間で、且つ、第1基板及び第2基板に配置された一対の電極と、前記一対の電極間に配置され、前記荷重によって電気特性が変化する導電性の感圧インクとを有する圧力検出部と、
第1基板と前記圧力検出部との間及び第2基板と前記圧力検出部の間のうち、少なくとも何れか一方に配置され、荷重を前記圧力検出部に集中させつつ伝達する荷重伝達部材と、を備えた圧力検出ユニット。 - 前記第1基板の厚みと前記第2基板の厚みとを異ならせてある請求項1に記載の圧力検出ユニット。
- 前記荷重伝達部材が、前記第1基板と前記圧力検出部との間、及び、前記第2基板と前記圧力検出部との間に配置してある請求項1または2に記載の圧力検出ユニット。
- 前記荷重伝達部材が、前記第1基板または前記第2基板の内面から遠ざかるほど断面積を大きく形成してある請求項1~3のいずれか一項に記載の圧力検出ユニット。
- 前記感圧インクが、前記第1基板又は前記第2基板の縁部に沿って点在して配置してある請求項1~4のいずれか一項に記載の圧力検出ユニット。
- 前記感圧インクが、前記一対の電極の少なくとも一方を覆う状態に配置してある請求項1~5のいずれか一項に記載の圧力検出ユニット。
- 前記一対の電極が、前記第1基板あるいは前記第2基板の何れか一方に配置され、
前記感圧インクが、前記第1基板あるいは前記第2基板の他方に当該一対の電極を覆うように配置してある請求項1~6のいずれか一項に記載の圧力検出ユニット。 - 前記第1基板と前記第2基板との対向領域に配置され、粘着性を有して前記第1基板と前記第2基板とを前記一対の電極と前記感圧インクとが接する状態に接着する接着部材を備え、
前記接着部材により、前記第1基板と前記第2基板とを引き付けて前記感圧インクに初期荷重を付与するようにした請求項1~7のいずれか一項に記載の圧力検出ユニット。 - 前記第1基板と前記第2基板とを前記一対の電極と前記感圧インクとが接する状態に融着することで、前記第1基板と前記第2基板とを引き付けて前記感圧インクに初期荷重を付与するようにした請求項1~7のいずれか一項に記載の圧力検出ユニット。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800377402A CN102483362A (zh) | 2009-08-28 | 2010-08-26 | 压力检测单元 |
US13/392,621 US8857276B2 (en) | 2009-08-28 | 2010-08-26 | Pressure detection unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-198705 | 2009-08-28 | ||
JP2009198705A JP2011047893A (ja) | 2009-08-28 | 2009-08-28 | 圧力検出ユニット |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011024903A1 true WO2011024903A1 (ja) | 2011-03-03 |
Family
ID=43628003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/064498 WO2011024903A1 (ja) | 2009-08-28 | 2010-08-26 | 圧力検出ユニット |
Country Status (5)
Country | Link |
---|---|
US (1) | US8857276B2 (ja) |
JP (1) | JP2011047893A (ja) |
CN (1) | CN102483362A (ja) |
TW (1) | TWI494550B (ja) |
WO (1) | WO2011024903A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI474235B (zh) * | 2012-10-03 | 2015-02-21 | Giantplus Technology Co Ltd | 單層電極觸控面板 |
TWI708168B (zh) * | 2015-03-09 | 2020-10-21 | 日商新力股份有限公司 | 輸入裝置及電氣機器 |
JP6530687B2 (ja) * | 2015-09-24 | 2019-06-12 | 日本メクトロン株式会社 | 感圧素子および圧力センサ |
KR102589832B1 (ko) * | 2018-08-17 | 2023-10-16 | 삼성디스플레이 주식회사 | 표시 장치 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57110436U (ja) * | 1980-12-26 | 1982-07-08 | ||
JPS61207939A (ja) * | 1985-03-13 | 1986-09-16 | Yokohama Rubber Co Ltd:The | 圧力センサ− |
JP2000241268A (ja) * | 1999-02-22 | 2000-09-08 | Kansei Corp | 着座検出装置 |
JP2001165788A (ja) * | 1999-12-06 | 2001-06-22 | Alps Electric Co Ltd | 感圧装置 |
JP2002124404A (ja) * | 2000-10-18 | 2002-04-26 | Nitta Ind Corp | 力検出装置 |
JP2006317340A (ja) * | 2005-05-13 | 2006-11-24 | Fujikura Ltd | 荷重センサ |
JP2008046817A (ja) * | 2006-08-14 | 2008-02-28 | Alps Electric Co Ltd | 表示入力装置及びこれを用いた電子機器 |
JP2008122215A (ja) * | 2006-11-13 | 2008-05-29 | Aisin Seiki Co Ltd | 圧電センサ及びその製造方法 |
JP2009134473A (ja) * | 2007-11-29 | 2009-06-18 | Sony Corp | 押圧検知センサ、入力装置及び電子機器 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL72736A0 (en) * | 1984-08-21 | 1984-11-30 | Cybertronics Ltd | Surface-area pressure transducers |
US4794366A (en) * | 1985-11-15 | 1988-12-27 | Toshiba Silicone Co., Ltd. | Key-touch sensor and method of manufacture |
US5431064A (en) * | 1992-09-18 | 1995-07-11 | Home Row, Inc. | Transducer array |
JP3102395B2 (ja) * | 1997-11-27 | 2000-10-23 | 日本電気株式会社 | 指紋検出装置 |
JP2000275115A (ja) * | 1999-03-25 | 2000-10-06 | Alps Electric Co Ltd | 圧力検出装置及びそれを用いた自動車用着座検出装置 |
JP2000321151A (ja) * | 1999-05-10 | 2000-11-24 | Hitachi Cable Ltd | 感圧センサー |
JP2002048658A (ja) | 2000-08-07 | 2002-02-15 | Polymatech Co Ltd | 圧力分布検出装置 |
JP2004028883A (ja) * | 2002-06-27 | 2004-01-29 | Denso Corp | 感圧センサ |
JP3986985B2 (ja) * | 2003-03-25 | 2007-10-03 | 株式会社デンソー | 感圧抵抗体及び感圧センサ |
US7112755B2 (en) * | 2003-05-21 | 2006-09-26 | Nitta Corporation | Pressure-sensitive sensor |
US7703342B2 (en) * | 2005-03-30 | 2010-04-27 | Xiroku, Inc. | Pressure distribution detection device |
JP2007010383A (ja) * | 2005-06-29 | 2007-01-18 | Institute Of Physical & Chemical Research | 柔軟触覚センサとその製作方法 |
US7509881B2 (en) * | 2005-07-29 | 2009-03-31 | 3M Innovative Properties Company | Interdigital force switches and sensors |
WO2008042903A2 (en) * | 2006-10-03 | 2008-04-10 | Kla-Tencor Technologies Corporation | Systems for sensing pressure/shear force |
CN100582875C (zh) * | 2007-04-13 | 2010-01-20 | 群康科技(深圳)有限公司 | 触摸屏显示装置 |
JP5396698B2 (ja) * | 2007-07-25 | 2014-01-22 | セイコーエプソン株式会社 | 圧力センサー |
DE602007009829D1 (de) * | 2007-08-13 | 2010-11-25 | Research In Motion Ltd | Taktiler Touchscreen für ein elektronisches Gerät |
CN101226089B (zh) * | 2008-01-31 | 2010-08-11 | 西安交通大学 | 柔性单点力片式传感器及制造方法 |
US20110198712A1 (en) * | 2008-09-29 | 2011-08-18 | Nissha Printing Co., Ltd. | Pressure Sensor |
JP4642158B2 (ja) * | 2008-12-25 | 2011-03-02 | 日本写真印刷株式会社 | 押圧検出機能を有するタッチパネル及び当該タッチパネル用感圧センサ |
EP2416231A4 (en) * | 2009-03-31 | 2013-09-04 | Nissha Printing | INPUT INFORMATION DEVICE AND PRESSURE DETECTION UNIT USED FOR THE INFORMATION INPUT DEVICE |
US8635919B2 (en) * | 2009-08-28 | 2014-01-28 | Nissha Printing Co., Ltd. | Pressure detection unit and pressure detection device |
JP5026486B2 (ja) * | 2009-09-29 | 2012-09-12 | 日本写真印刷株式会社 | 感圧センサを備えたタッチ入力デバイスの実装構造 |
US20130169589A1 (en) * | 2010-04-08 | 2013-07-04 | Nissha Printing Co., Ltd. | Pressure Detection Unit and Information Input Device Having the Pressure Detection Unit |
JP5202578B2 (ja) * | 2010-06-03 | 2013-06-05 | 日本写真印刷株式会社 | 圧力検出部及び圧力検出部を備えた情報入力装置 |
-
2009
- 2009-08-28 JP JP2009198705A patent/JP2011047893A/ja active Pending
-
2010
- 2010-08-26 CN CN2010800377402A patent/CN102483362A/zh active Pending
- 2010-08-26 WO PCT/JP2010/064498 patent/WO2011024903A1/ja active Application Filing
- 2010-08-26 US US13/392,621 patent/US8857276B2/en not_active Expired - Fee Related
- 2010-08-27 TW TW099128856A patent/TWI494550B/zh not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57110436U (ja) * | 1980-12-26 | 1982-07-08 | ||
JPS61207939A (ja) * | 1985-03-13 | 1986-09-16 | Yokohama Rubber Co Ltd:The | 圧力センサ− |
JP2000241268A (ja) * | 1999-02-22 | 2000-09-08 | Kansei Corp | 着座検出装置 |
JP2001165788A (ja) * | 1999-12-06 | 2001-06-22 | Alps Electric Co Ltd | 感圧装置 |
JP2002124404A (ja) * | 2000-10-18 | 2002-04-26 | Nitta Ind Corp | 力検出装置 |
JP2006317340A (ja) * | 2005-05-13 | 2006-11-24 | Fujikura Ltd | 荷重センサ |
JP2008046817A (ja) * | 2006-08-14 | 2008-02-28 | Alps Electric Co Ltd | 表示入力装置及びこれを用いた電子機器 |
JP2008122215A (ja) * | 2006-11-13 | 2008-05-29 | Aisin Seiki Co Ltd | 圧電センサ及びその製造方法 |
JP2009134473A (ja) * | 2007-11-29 | 2009-06-18 | Sony Corp | 押圧検知センサ、入力装置及び電子機器 |
Also Published As
Publication number | Publication date |
---|---|
TW201140015A (en) | 2011-11-16 |
JP2011047893A (ja) | 2011-03-10 |
US8857276B2 (en) | 2014-10-14 |
US20120204657A1 (en) | 2012-08-16 |
CN102483362A (zh) | 2012-05-30 |
TWI494550B (zh) | 2015-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5885865B2 (ja) | 圧力検出装置及び情報入力装置 | |
WO2010113698A1 (ja) | 情報入力装置及び情報入力装置に用いられる圧力検出ユニット | |
JP5269250B2 (ja) | 圧力検出部及び圧力検出部を備えた情報入力装置 | |
JP5202578B2 (ja) | 圧力検出部及び圧力検出部を備えた情報入力装置 | |
US8017884B2 (en) | Integrated touch panel and electronic device using the same | |
JP4711150B2 (ja) | タッチパネルおよび表示装置 | |
JP2011076172A (ja) | 感圧センサを備えたタッチ入力デバイスの実装構造 | |
WO2015080225A1 (ja) | 入力装置 | |
WO2011024903A1 (ja) | 圧力検出ユニット | |
JP5546327B2 (ja) | 情報入力装置 | |
JP5350861B2 (ja) | 圧力検出ユニット | |
WO2021053977A1 (ja) | 圧力センサ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080037740.2 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10811952 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13392621 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10811952 Country of ref document: EP Kind code of ref document: A1 |