CN102165400A - Touch panel and transparent piezoelectric sheet - Google Patents

Touch panel and transparent piezoelectric sheet Download PDF

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Publication number
CN102165400A
CN102165400A CN200980138308XA CN200980138308A CN102165400A CN 102165400 A CN102165400 A CN 102165400A CN 200980138308X A CN200980138308X A CN 200980138308XA CN 200980138308 A CN200980138308 A CN 200980138308A CN 102165400 A CN102165400 A CN 102165400A
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CN
China
Prior art keywords
mentioned
transparent
plate electrode
sheet
transparent plate
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Pending
Application number
CN200980138308XA
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Chinese (zh)
Inventor
小谷哲浩
向井惠吏
高明天
金村崇
表研次
大东弘二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Ideal Star Inc
Original Assignee
Daikin Industries Ltd
Ideal Star Inc
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Application filed by Daikin Industries Ltd, Ideal Star Inc filed Critical Daikin Industries Ltd
Publication of CN102165400A publication Critical patent/CN102165400A/en
Pending legal-status Critical Current

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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
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
    • H10N30/302—Sensors
    • 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
    • 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

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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

Provided is a touch panel or the like which (1) has high transparency, (2) can adopt various position detecting methods, and (3) can use an already-existing apparatus for manufacturing a touch panel for touch position detection or use an already-existing touch panel for touch position detection itself in the process of manufacturing thereof. In order to provide the above touch panel, a transparent piezoelectric sheet includes a sheet-like transparent piezoelectric layer, a first transparent plate electrode provided on one surface of the sheet-like transparent piezoelectric layer, and a second transparent plate electrode provided on the other surface of the sheet-like transparent piezoelectric layer. In the transparent piezoelectric sheet, the first transparent plate electrode has a first transparent plate electrode portion, and the second transparent plate electrode has a second transparent plate electrode portion. In the transparent piezoelectric sheet, the contour of the first transparent plate electrode portion surrounds the contour of the second transparent plate electrode portion in a plan view, or the contour of the second transparent plate electrode portion surrounds the contour of the first transparent plate electrode portion in a plan view.

Description

Contact panel and transparent piezoelectric sheet
Technical field
The present invention relates to a kind of contact panel and transparent piezoelectric sheet.
Background technology
In recent years, the display device and the input media that are provided with in the front of the display device of LCD etc. as the contact panel of input media obtain practicability, are used for guidance panel of running gears such as mobile phone machine and household appliances etc.Use has the display device of contact panel and input media can make the user by pushing demonstration on the picture and operating means intuitively.
In the contact panel of practicability up to now, can only detect the position (in this instructions, being sometimes referred to as position of touch) that the user pushes, and can't detect intensity (that is height of, pushing (intensity) that the user pushes.In this instructions, be sometimes referred to as touch-control pressure).On the other hand, use in the display device and input media of contact panel, contact panel is the front that is arranged at display device, so for improving the demonstration visibility of display device, require the transparency of contact panel higher.
As detecting input media or the similar person who pushes intensity and have transparency to it, for example, disclosing in patent documentation 1 has a kind of touch surface board, and it comprises as the piezoelectrics of Electronic Paper member, the 1st electrode of a side that is arranged at above-mentioned piezoelectrics and the 2nd electrode that is arranged at the opposite side of above-mentioned piezoelectrics.
Again, disclosing in patent documentation 2 has a kind of touch-control screen system, and it comprises: the 1st sensing system, and it is to combine with the touch-control screen, determines the group with respect to each position contacting coordinate of above-mentioned touch-control screen; And the 2nd sensing system, it is to combine with above-mentioned touch-control screen, utilizes the object of the 1st type to confirm each contact of above-mentioned touch-control screen, utilizes the object of the 2nd type to make respectively contacting of above-mentioned touch-control screen invalid, does not have the ability of determining above-mentioned location coordinate group; And, particularly, disclose the power sensor in the outside of the visual zone that a kind of LCD of being disposed at (liquidCrystalDisplay, LCD) is arranged as the 1st sensing system.
Again, disclosing in patent documentation 3 has a kind of transparent piezoelectric sensor, it is characterized in that, between a pair of transparency carrier of subtend, is formed with transparent pressure-sensitive layer with piezoelectricity and a pair of transparent conductive film layer that subtend disposes via this transparent pressure-sensitive layer.
The prior art document
Patent documentation
Patent documentation 1: the Jap.P. spy opens the 2006-163619 communique
Patent documentation 2: the Jap.P. spy opens the 2004-534974 communique
Patent documentation 3: the Jap.P. spy opens the 2004-125571 communique
Summary of the invention
Though the touch surface board that patent documentation 1 is disclosed can obtain and push corresponding potential pulse, the touch surface board not with transparency as essential important document, can think its transparency and insufficient.Again, the contact panel that above-mentioned patent documentation 1 is disclosed is the resistance membrane type, but detecting easier electrostatic capacitive, (b) in (a) multiple spot is suitable for the higher ultrasonic type of handwriting input and permanance, and (c) in the contact panel of other position probing modes of each tool advantage of transmittance is higher and permanance is higher optical profile type etc., also needs to develop the contact panel that can detect position of touch and touch-control pressure.
Again, there is the problem of manufacturing installation of the contact panel of the existing position of only detecting the user and being pushed that is difficult to directly to migrate in the contact panel that disclosed of above-mentioned patent documentation 1.If when the manufacturing of the contact panel that can detect position of touch and touch-control pressure, can directly utilize existing position of touch detect usefulness contact panel manufacturing installation or can directly utilize existing position of touch to detect the contact panel self of usefulness, it is easy then will to become, even can cut down manufacturing cost.
The touch-control screen that patent documentation 2 is disclosed can be differentiated false contact, so also be that it proposes to detect the strength concept of pushing, but the in fact concrete content that discloses is as mentioned above, the power sensor in the outside of the visual zone by LCD detects the warpage person of substrate, its precision is also insufficient, and is difficult to carry out for example linearity test.
The transparent pressure sensor that patent documentation 3 is disclosed also discloses and can detect having or not of pushing, and can not detect the power of pushing but disclose.
In view of above-mentioned background, the object of the present invention is to provide a kind of contact panel etc., it can detect position of touch, and can be with high Precision Detection touch-control pressure (height of pushing (intensity)).
Above-mentioned contact panel (1) transparency is higher, (2) can adopt all places detection mode, and (3) when it is made, can directly utilize existing position of touch to detect the manufacturing installation of the contact panel of usefulness, perhaps can directly utilize existing position of touch to detect the contact panel self of usefulness.
Above-mentioned problem can solve by the following invention that discloses.
The transparent piezoelectric sheet of the 1st invention comprises:
Sheet transparent piezoelectric body layer;
The 1st transparent plate electrode, it is to be disposed on the one side of this sheet transparent piezoelectric body layer; And
The 2nd transparent plate electrode, it is to be disposed on the another side of this sheet transparent piezoelectric body layer; And
Above-mentioned the 1st transparent plate electrode comprises the 1st transparent plate electrode part,
Above-mentioned the 2nd transparent plate electrode comprises the 2nd transparent plate electrode part,
The profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing.
Transparent piezoelectric sheet of the present invention can be used for the detection of touch-control pressure.In other words, transparent piezoelectric sheet of the present invention can be used as touch-control pressure detection transparent piezoelectric sheet.Herein, owing to can directly be passed to sheet transparent piezoelectric body layer from the touch-control pressure of the top of the plate electrode on the face that is disposed at sheet transparent piezoelectric body layer, so can be with high Precision Detection touch-control pressure.In addition, the profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing, the permissible range of the skew when overlooking observation of the 1st transparent plate electrode part when therefore making and the 2nd transparent plate electrode part increases, thereby can reduce the defective products rate when making.
Again, by this formation, the certain touch-control pressure in the whole zone in the scope of area smaller's profile in the 1st transparent plate electrode part and the 2nd transparent plate electrode part can be detected, even the interior certain touch-control pressure of broader region of required (designed) can be detected.Therefore, when transparent piezoelectric sheet of the present invention and position of touch being detected when using with the contact panel combination, can allow to detect touch-control pressure and position of touch both sides' zone, detect with above-mentioned position of touch and use the position of touch surveyed area of contact panel consistent to heavens (promptly, can effectively utilize above-mentioned position of touch to detect position of touch surveyed area with contact panel), therefore transparent piezoelectric sheet of the present invention can combine with the contact panel that position of touch detects usefulness and suitably use.Therefore, a kind of contact panel can be provided, this contact panel (1) transparency is higher, (2) can adopt all places detection mode, and (3) when it is made, can directly utilize existing position of touch detect usefulness contact panel manufacturing installation or can directly utilize existing position of touch to detect the contact panel self of usefulness.
The transparent piezoelectric sheet of the 2nd invention is as the transparent piezoelectric sheet of the 1st invention, wherein
The thickness of above-mentioned sheet transparent piezoelectric body layer is 1～200 μ m.
Transparent piezoelectric sheet of the present invention is 1～200 μ m by the thickness of above-mentioned sheet transparent piezoelectric body layer, function be can give, and sensitivity and precision that position of touch detects the detection of the position of touch of using contact panel can not destroyed with high sensitivity and high Precision Detection touch-control pressure.The viewpoint of this thickness self-induced transparency degree is considered, is preferably below the 50 μ m, and this thickness is considered from the viewpoint of the detection sensitivity of touch-control pressure, is preferably 20 μ m～100 μ m.
The transparent piezoelectric sheet of the 3rd invention is as the transparent piezoelectric sheet of the 1st invention or the 2nd invention, wherein
Above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
Transparent piezoelectric sheet of the present invention contains organic polymer by above-mentioned sheet transparent piezoelectric body layer, can prepare and make large-area sheet transparent piezoelectric body layer, so can reduce manufacturing cost.
The transparent piezoelectric sheet of the 4th invention is as the transparent piezoelectric sheet of the 3rd invention, wherein
Above-mentioned organic polymer is vinylidene fluoride-TFE copolymer.
Transparent piezoelectric sheet of the present invention comprises vinylidene fluoride-TFE copolymer by above-mentioned sheet transparent piezoelectric body layer, and has extra high transparency.
The transparent piezoelectric sheet of arbitrary invention during the transparent piezoelectric sheet of the 5th invention is invented to the 4th as the 1st invention, wherein
Above-mentioned the 1st transparent plate electrode further comprises the 1st wire portion, and
Above-mentioned the 2nd transparent plate electrode further comprises the 2nd wire portion.
The 1st wire portion and the 2nd wire portion are respectively in order to above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode are connected in the part of outside wiring.Transparent piezoelectric sheet of the present invention further comprises the 1st wire portion by above-mentioned the 1st transparent plate electrode, and above-mentioned the 2nd transparent plate electrode further comprises the 2nd wire portion, can easily be connected in outside wiring.
The transparent piezoelectric sheet of arbitrary invention during the transparent piezoelectric sheet of the 6th invention is invented to the 5th as the 1st invention, wherein
Further comprise the portion of sticking together.
Therefore transparent piezoelectric sheet of the present invention comprises the portion of sticking together, and can attach to position of touch and detect with using on the arbitrary objects such as contact panel, thereby can give the function that detects touch-control pressure to its surface.
The transparent piezoelectric sheet of arbitrary invention during the transparent piezoelectric sheet of the 7th invention is invented to the 6th as the 1st invention,
It is to detect with the contact panel combination with position of touch to use.
Transparent piezoelectric sheet of the present invention uses by detecting with the contact panel combination with position of touch, can detect with contact panel position of touch and give the function that detects touch-control pressure.
The transparent piezoelectric sheet of the 8th invention is as the transparent piezoelectric sheet of the 7th invention, wherein
It is resistance membrane type or electrostatic capacitive that above-mentioned position of touch detects with contact panel.
Transparent piezoelectric sheet of the present invention can not destroy the lower resistance membrane type position of touch of manufacturing cost and detect and detect easier electrostatic capacitive position of touch with the advantageous feature of contact panel or multiple spot and detect advantageous feature with contact panel, and the function of its grade being given detection touch-control pressure.
The transparent piezoelectric sheet of the subsidiary framework of the 9th invention,
It is with as the 1st invention transparent piezoelectric sheet of arbitrary invention to the 8th invention be accommodated in the framework,
The coincidence part when overlooking observation of above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode does not overlap with said frame in overlooking when observing.
The transparent piezoelectric sheet of subsidiary framework of the present invention is because of comprising the framework easy operating, and above-mentioned the 1st transparent plate electrode does not overlap with said frame in overlooking when observing with the coincidence part when overlooking observation of above-mentioned the 2nd transparent plate electrode, therefore can detect touch-control pressure exactly.
The transparent piezoelectric sheet of the 10th invention comprises:
Sheet transparent piezoelectric body layer;
The 1st transparent plate electrode, it is to be disposed on the one side of this sheet transparent piezoelectric body layer;
The 2nd transparent plate electrode, it is to be disposed on the another side of this sheet transparent piezoelectric body layer; And
Stick together portion.
Contact panel of the present invention detect position of touch so can detect by position of touch with contact panel, and can detect touch-control pressure by above-mentioned transparent piezoelectric sheet owing to comprise the position of touch detection with contact panel and transparent piezoelectric sheet.Therefore in addition, transparent piezoelectric sheet of the present invention comprises the portion of sticking together, and can attach to position of touch and detect with using on the arbitrary objects such as contact panel, thereby can give the function that detects touch-control pressure to its surface.
The 11st the invention the transparent piezoelectric sheet as the 10th the invention the transparent piezoelectric sheet,
It is to detect with the contact panel combination with position of touch to use.
Transparent piezoelectric sheet of the present invention uses by detecting with the contact panel combination with position of touch, can detect with contact panel position of touch and give the function that detects touch-control pressure.
The transparent piezoelectric sheet of the 12nd invention is as the transparent piezoelectric sheet of the 11st invention, wherein
It is resistance membrane type or electrostatic capacitive that above-mentioned position of touch detects with contact panel.
Transparent piezoelectric sheet of the present invention can not destroy the lower resistance membrane type position of touch of manufacturing cost and detect and detect easier electrostatic capacitive position of touch with the advantageous feature of contact panel or multiple spot and detect advantageous feature with contact panel, and the function of its grade being given detection touch-control pressure.
The transparent piezoelectric sheet of arbitrary invention during the transparent piezoelectric sheet of the 13rd invention is invented to the 12nd as the 10th invention, wherein
The thickness of above-mentioned sheet transparent piezoelectric body layer is 1～200 μ m.
Transparent piezoelectric sheet of the present invention is 1～200 μ m by the thickness of above-mentioned sheet transparent piezoelectric body layer, can not destroy sensitivity and precision that position of touch detects the detection of the position of touch of using contact panel, and give function with high sensitivity and high Precision Detection touch-control pressure.The viewpoint of this thickness self-induced transparency degree is considered, is preferably below the 50 μ m, and this thickness is considered from the viewpoint of the detection sensitivity of touch-control pressure, is preferably 20 μ m～100 μ m.
The transparent piezoelectric sheet of arbitrary invention during the transparent piezoelectric sheet of the 14th invention is invented to the 13rd as the 10th invention, wherein
Above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
Transparent piezoelectric sheet of the present invention contains organic polymer by above-mentioned sheet transparent piezoelectric body layer, can prepare and make large-area sheet transparent piezoelectric body layer, so can reduce manufacturing cost.
The transparent piezoelectric sheet of the 15th invention is as the transparent piezoelectric sheet of the 14th invention, wherein
Organic polymer is vinylidene fluoride-TFE copolymer.
Transparent piezoelectric sheet of the present invention contains vinylidene fluoride-TFE copolymer by above-mentioned sheet transparent piezoelectric body layer, and has extra high transparency.
The transparent piezoelectric sheet of arbitrary invention during the transparent piezoelectric sheet of the 16th invention is invented to the 15th as the 10th invention, wherein
Above-mentioned the 1st transparent plate electrode comprises the 1st transparent plate electrode part,
Above-mentioned the 2nd transparent plate electrode comprises the 2nd transparent plate electrode part,
The profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing.
Transparent piezoelectric sheet of the present invention comprises the profile of above-mentioned the 2nd transparent plate electrode part when overlooking observation by the profile of above-mentioned the 1st transparent plate electrode part, the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing, and the permissible range in overlooking the skew when observing of the 1st transparent plate electrode part and the 2nd transparent plate electrode part when making is increased, thereby the defective products rate can reduce manufacturing the time.
The transparent piezoelectric sheet of the subsidiary framework of the 17th invention,
It is with as the 10th invention transparent piezoelectric sheet of arbitrary invention to the 16th invention be accommodated in the framework,
The coincidence part when overlooking observation of above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode does not overlap with said frame in overlooking when observing.
The transparent piezoelectric sheet of subsidiary framework of the present invention is because of comprising the framework easy operating, and above-mentioned the 1st transparent plate electrode does not overlap with said frame in overlooking when observing with the coincidence part when overlooking observation of above-mentioned the 2nd transparent plate electrode, therefore can detect touch-control pressure exactly.
The transparent piezoelectric sheet of the subsidiary framework of the 18th invention comprises:
The transparent piezoelectric sheet;
Framework, it is to take in this transparent piezoelectric sheet; And
Stick together portion, it is to be arranged on the surface of this framework; And
Above-mentioned transparent piezoelectric sheet comprises:
(1) sheet transparent piezoelectric body layer;
(2) the 1st transparent plate electrodes, it is to be disposed on the one side of this sheet transparent piezoelectric body layer; And
(3) the 2nd transparent plate electrodes, it is to be disposed on the another side of this sheet transparent piezoelectric body layer.
The transparent piezoelectric sheet of subsidiary framework of the present invention can be used for the detection of touch-control pressure.Transparent piezoelectric sheet particularly of the present invention is owing to comprise framework and easy operating, and by comprising the portion of sticking together, and detects with using on the arbitrary objects such as contact panel and can attach to position of touch, thereby can give the function that detects touch-control pressure to its surface.
The transparent piezoelectric sheet of the subsidiary framework of the 19th invention is as the transparent piezoelectric sheet of the subsidiary framework of the 17th invention or the 18th invention, wherein
Above-mentioned the 1st transparent plate electrode further comprises the 1st wire portion that above-mentioned the 1st transparent plate electrode part is connected with the outside wiring of said frame,
Above-mentioned the 2nd transparent plate electrode further comprises the 2nd wire portion that above-mentioned the 2nd transparent plate electrode part is connected with the outside wiring of said frame.
The transparent piezoelectric sheet of subsidiary framework of the present invention further comprises the 1st wire portion that above-mentioned the 1st transparent plate electrode part is connected with the outside wiring of said frame by above-mentioned the 1st transparent plate electrode, and above-mentioned the 2nd transparent plate electrode further comprises the 2nd wire portion that above-mentioned the 2nd transparent plate electrode part is connected with the outside wiring of said frame, and can easily be connected in outside wiring.
The transparent piezoelectric sheet of the subsidiary framework of arbitrary invention during the transparent piezoelectric sheet of the subsidiary framework of the 20th invention is invented to the 19th as the 17th invention,
It is to detect with the contact panel combination with position of touch to use.
The transparent piezoelectric sheet of subsidiary framework of the present invention uses by detecting with the contact panel combination with position of touch, can detect with contact panel position of touch and give the function that detects touch-control pressure.
The transparent piezoelectric sheet of the subsidiary framework of the 21st invention is as the transparent piezoelectric sheet of the subsidiary framework of the 20th invention, wherein
It is resistance membrane type or electrostatic capacitive that above-mentioned position of touch detects with contact panel.
The transparent piezoelectric sheet of subsidiary framework of the present invention can not destroy the lower resistance membrane type position of touch of manufacturing cost and detect and detect easier electrostatic capacitive position of touch with the advantageous feature of contact panel or multiple spot and detect advantageous feature with contact panel, and the function of its grade being given detection touch-control pressure.
The contact panel of the 22nd invention comprises:
Position of touch detects uses contact panel; And
Be disposed at this position of touch detect with on the one side of contact panel as the 1st invention to the 8th invention and the 10th invention to the 16th invention in the transparent piezoelectric sheet or as the transparent piezoelectric sheet of the 9th invention and the 17th invention subsidiary framework of arbitrary invention to the 21st invention of arbitrary invention.
Contact panel of the present invention is owing to comprise the transparent piezoelectric sheet of above-mentioned transparent piezoelectric sheet or above-mentioned subsidiary framework, so can detect by position of touch and detect position of touch, and can detect touch-control pressure by above-mentioned transparent piezoelectric sheet (or transparent piezoelectric sheet of above-mentioned subsidiary framework) with contact panel.
Detect form and the indefinite of using contact panel for above-mentioned position of touch, so can adopt position probing mode person arbitrarily.
Detect as above-mentioned position of touch and use contact panel, can use existing position of touch to detect the contact panel of usefulness, so when the manufacturing of contact panel of the present invention, can utilize and carry out mass-produced position of touch detection usefulness contact panel self and manufacturing installation thereof.
The contact panel of the 23rd invention is as the contact panel of the 22nd invention, wherein
It is resistance membrane type or electrostatic capacitive that above-mentioned position of touch detects with contact panel.
Transparent piezoelectric sheet of the present invention can not destroy advantageous feature or the multiple spot that the lower resistance membrane type position of touch of manufacturing cost detects with contact panel and detect the advantageous feature that easier electrostatic capacitive position of touch detects the usefulness contact panel, and has these advantageous feature.
The contact panel of the 24th invention is as the contact panel of the 22nd invention or the 23rd invention, wherein
Further comprise elastomeric sheets.
Contact panel of the present invention is by further comprising elastomeric sheets, and can detect touch-control pressure with high sensitivity more.
The position of touch of the 25th invention detects uses contact panel,
It is to stick just like the transparent piezoelectric sheet of the 6th invention or the 10th invention or as the transparent piezoelectric sheet person of subsidiary framework of the 18th invention by the above-mentioned portion of sticking together.
This position of touch detects has the transparent piezoelectric of above-mentioned transparent piezoelectric sheet or above-mentioned subsidiary framework sheet with contact panel by sticking, and gives the function that detects touch-control pressure.
The display device of the 26th invention,
It is to stick just like the transparent piezoelectric sheet of the 6th invention or the 10th invention or as the transparent piezoelectric sheet person of subsidiary framework of the 18th invention by the above-mentioned portion of sticking together.
This display device has the transparent piezoelectric of above-mentioned transparent piezoelectric sheet or above-mentioned subsidiary framework sheet by sticking, and gives the function that detects touch-control pressure.
The contact panel of the 27th invention comprises:
Position of touch detects uses contact panel; And
The transparent piezoelectric sheet, it is to be disposed at this position of touch to detect with on the one side of contact panel; And
Above-mentioned transparent piezoelectric sheet comprises:
(1) sheet transparent piezoelectric body layer;
(2) the 1st transparent plate electrodes, it is to be disposed on the one side of this sheet transparent piezoelectric body layer; And
(3) the 2nd transparent plate electrodes, it is to be disposed on the another side of this sheet transparent piezoelectric body layer.
Contact panel of the present invention detect position of touch so can detect by position of touch with contact panel, and detect touch-control pressure by above-mentioned transparent piezoelectric sheet owing to comprise the position of touch detection with contact panel and transparent piezoelectric sheet.
Detect form and the indefinite of using contact panel for above-mentioned position of touch, so can adopt position probing mode person arbitrarily.
As above-mentioned position of touch detection contact panel, can use existing position of touch to detect the contact panel of usefulness, so when the manufacturing of contact panel of the present invention, can utilize and carry out mass-produced position of touch and detect with contact panel self and manufacturing installation thereof.
The contact panel of the 28th invention is as the contact panel of the 27th invention, wherein
The thickness of above-mentioned sheet transparent piezoelectric body layer is 1～200 μ m.
Contact panel of the present invention is 1～200 μ m by this thickness, and can and detect touch-control pressure with high sensitivity and high Precision Detection position of touch.
The viewpoint of this thickness self-induced transparency degree is considered, is preferably below the 50 μ m, and this thickness is considered from the viewpoint of the detection sensitivity of touch-control pressure, is preferably 20 μ m～100 μ m.
The contact panel of the 29th invention is as the contact panel of the 27th invention or the 28th invention, wherein
Above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
Contact panel of the present invention contains organic polymer by above-mentioned sheet transparent piezoelectric body layer, can prepare and make large-area sheet transparent piezoelectric body layer, so can reduce manufacturing cost.
The contact panel of the 30th invention is as the contact panel of the 29th invention, wherein
Above-mentioned organic polymer is vinylidene fluoride-TFE copolymer.
Contact panel of the present invention contains vinylidene fluoride-TFE copolymer by above-mentioned sheet transparent piezoelectric body layer, can make contact panel of the present invention have extra high transparency.
The contact panel of arbitrary invention during the contact panel of the 31st invention is invented to the 30th as the 27th invention, wherein
Above-mentioned transparent piezoelectric sheet is to be accommodated in the framework,
The coincidence part when overlooking observation of above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode does not overlap with said frame in overlooking when observing.
Contact panel of the present invention does not overlap with said frame in overlooking when observing with the coincidence part when overlooking observation of above-mentioned the 2nd transparent plate electrode by above-mentioned the 1st transparent plate electrode, and can detect touch-control pressure exactly.
The contact panel of the 32nd invention is as the contact panel of the 31st invention, wherein
The 1st wire portion that above-mentioned the 1st transparent plate electrode comprises the 1st transparent plate electrode part and above-mentioned the 1st transparent plate electrode part is connected with the outside wiring of said frame,
The 2nd wire portion that above-mentioned the 2nd transparent plate electrode comprises the 2nd transparent plate electrode part and above-mentioned the 2nd transparent plate electrode part is connected with the outside wiring of said frame,
The profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing.
Contact panel of the present invention comprises the profile of above-mentioned the 2nd transparent plate electrode part when overlooking observation by the profile of above-mentioned the 1st transparent plate electrode part, the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing, and the permissible range in overlooking the skew when observing of the 1st transparent plate electrode part and the 2nd transparent plate electrode part when making is increased, thereby the defective products rate can reduce manufacturing the time.
The contact panel of arbitrary invention during the contact panel of the 33rd invention is invented to the 32nd as the 27th invention, wherein
The electrode of the touch-control side in the 1st transparent plate electrode and the 2nd transparent plate electrode is a ground-electrode.
Contact panel of the present invention is a ground-electrode by the electrode of the touch-control side in the 1st transparent plate electrode and the 2nd transparent plate electrode, can reduce the noise of output voltage.
The contact panel of the 34th invention is as the contact panel of the 33rd invention, wherein
Above-mentioned transparent piezoelectric sheet be connected in above-mentioned position of touch detect with contact panel with the touch-control side be that the face of opposition side disposes, and the transparent plate electrode double as position of touch of above-mentioned touch-control side detects the ground-electrode of usefulness contact panel.
Contact panel of the present invention detects the ground-electrode of using contact panel by the transparent plate electrode double as position of touch of above-mentioned touch-control side, and the structure of contact panel of the present invention is simplified, and therefore can reduce manufacturing cost.
The contact panel of the 35th invention comprises:
Position of touch detects uses contact panel; And
The transparent piezoelectric sheet, it is disposed at this position of touch and detects with on the one side of contact panel; And
Above-mentioned transparent piezoelectric sheet comprises:
(1) the 1st slide member, it is in following the 1st transparent plate electrode that is formed with;
(2) sheet transparent piezoelectric body layer; And
(3) the 2nd slide members, it is in top the 2nd transparent plate electrode that is formed with;
Above-mentioned the 1st slide member, above-mentioned sheet transparent piezoelectric body layer and above-mentioned the 2nd slide member be according to this order and lamination.
Contact panel of the present invention is except that having the effect identical with the contact panel of the 1st invention, owing to (for example can use general member, with ITO (Indium TinOxide, tin indium oxide) PET (Polyethyleneterephthalate, polyethylene terephthalate) film) as the slide member that is formed with plate electrode, so make easily.
The contact panel of arbitrary invention during the contact panel of the 36th invention is invented to the 35th as the 27th invention, wherein
Above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
Contact panel of the present invention contains organic polymer by above-mentioned sheet transparent piezoelectric body layer, and can prepare and make large-area sheet transparent piezoelectric body layer, so can reduce manufacturing cost.
The contact panel of the 37th invention is as the contact panel of the 36th invention, wherein
Organic polymer is vinylidene fluoride-TFE copolymer.
Transparent piezoelectric sheet of the present invention contains vinylidene fluoride-TFE copolymer by above-mentioned sheet transparent piezoelectric body layer, and has extra high transparency.
The contact panel of arbitrary invention during the contact panel of the 38th invention is invented to the 37th as the 27th invention, wherein
Further comprise elastomeric sheets.
Contact panel of the present invention is by further comprising elastomeric sheets, and can detect touch-control pressure with high sensitivity more.
The invention effect
Contact panel of the present invention detects with contact panel and transparent piezoelectric sheet owing to comprising position of touch, so can detect with contact panel and with the high Precision Detection position of touch by position of touch, and can detect touch-control pressure by above-mentioned transparent piezoelectric sheet.
Detect form and the indefinite of using contact panel for above-mentioned position of touch, so can adopt position probing mode person arbitrarily.
Detect as above-mentioned position of touch and use contact panel, can use existing position of touch to detect the contact panel of usefulness, carry out mass-produced position of touch detection usefulness contact panel self and manufacturing installation thereof so when the manufacturing of contact panel of the present invention, can utilize.
Transparent piezoelectric sheet of the present invention can be used for the detection of touch-control pressure.
Transparent piezoelectric sheet particularly of the present invention comprises the profile of above-mentioned the 2nd transparent plate electrode part when overlooking observation in the profile of above-mentioned the 1st transparent plate electrode part, the profile of perhaps above-mentioned the 2nd transparent plate electrode part is when overlooking the situation of the profile that comprises above-mentioned the 1st transparent plate electrode part when observing, and when detecting the situation of using with the contact panel combination with position of touch, can allow to detect touch-control pressure and position of touch both sides' zone, consistent with above-mentioned position of touch detection with the position of touch surveyed area height of contact panel, so can be fit to detect the contact panel combination of usefulness with position of touch and use.Particularly when transparent piezoelectric sheet of the present invention comprises the situation of the portion of sticking together, can attach to position of touch by this and detect, thereby can give the function that detects touch-control pressure its surface with on the arbitrary objects such as contact panel and use again.
Description of drawings
Fig. 1 is the sectional view of an example of contact panel of the present invention.
Fig. 2 is the sectional view of an example of contact panel of the present invention.
Fig. 3 is the planimetric map of an example of contact panel of the present invention.
Fig. 4 is the stereographic map of an example of transparent piezoelectric sheet of the present invention.
Fig. 5 is the sectional view of an example of transparent piezoelectric sheet of the present invention.
Fig. 6 is the sectional view of an example of the transparent piezoelectric sheet of subsidiary framework of the present invention.
Fig. 7 is the stereographic map of an example of the transparent piezoelectric sheet of subsidiary framework of the present invention.
Fig. 8 is the chart (test case 2) that electric signal that expression causes by the touch-control of pushing 22kN/m2 produces.
Fig. 9 is that expression produces chart (test case 2) by the electric signal that the touch-control of pushing 12kN/m2 causes.
Figure 10 is the detection chart (test case 4) of expression piezoelectric signal.
Figure 11 is the detection chart (test case 4) of expression piezoelectric signal.
Embodiment
Below, with reference to graphic, an example of the present invention is described, but the present invention is not limited thereto.Owing to pay the utmost attention to and understand easness, so these graphic each size ratios of not representing exactly.Again, illustrated constitutive requirements below are not to be constitutive requirements essential to the invention.In addition, in following figure, same-sign person represents equivalent.
＜contact panel 〉
Fig. 1 is the figure of an example (contact panel 100) of expression contact panel of the present invention.
Contact panel 100 comprises position of touch and detects with contact panel 10.
Detect with contact panel 10 as position of touch, be not particularly limited, can use general position of touch to detect and use contact panel.
Detect form as position of touch so, for example can enumerate resistance membrane type, electrostatic capacitive, ultrasonic type and optical profile type etc., but be not limited to these with contact panel 10.Wherein, the position of touch that is preferably the lower resistance membrane type of (a) manufacturing cost detect with contact panel or (b) the multiple spot position of touch that detects easier electrostatic capacitive detect the position of touch detection of using contact panel, contact panel of the present invention can directly keep these modes with advantage that contact panel had.
The thickness that position of touch detects with contact panel 10 is preferably 100 μ m～2mm.If it is excessive that position of touch detects with the thickness of contact panel 10, then the transparency of contact panel of the present invention might reduce.Again, when particularly the position of touch detection being disposed at the situation of touch-control side with contact panel 10 for transparent piezoelectric sheet 20, if it is excessive that position of touch detects with the thickness of contact panel 10, then the sensitivity of the touch-control pressure detection by transparent piezoelectric sheet 20 might reduce.
Transparent piezoelectric sheet 20 is to be disposed at position of touch to detect with on the one side of contact panel 10.
Transparent piezoelectric sheet 20 can detect for position of touch be disposed at the touch-control side with contact panel 10, also can be anti-and be disposed at the opposition side of touch-control side.Have in the display device and input media of contact panel of the present invention in use, display is to be disposed at the side opposite with the touch-control side of contact panel of the present invention.
Transparent piezoelectric sheet 20 comprises:
(1) sheet transparent piezoelectric body layer 21;
(2) the 1st transparent plate electrodes 22, it is to be disposed on the one side of this sheet transparent piezoelectric body layer 21; And
(3) the 2nd transparent plate electrodes 23, it is to be disposed on the another side of this sheet transparent piezoelectric body layer 21.
Sheet transparent piezoelectric body layer 21 is so long as have piezoelectricity and transparency person, then be not particularly limited, can enumerate the layer that contains vinylidene fluoride-TFE copolymer, the layer that contains the layer of vinylidene fluoride-trifluoro-ethylene copolymer and contain polyvinylidene fluoride.
Wherein, be preferably the layer that contains vinylidene fluoride-TFE copolymer.
Vinylidene fluoride in vinylidene fluoride-TFE copolymer: tetrafluoroethene (mol ratio) is considered from the viewpoint of the piezoelectricity relevant with the detection sensitivity of touch-control pressure, is preferably 50: 50～90: 10, is more preferably 65: 35～80: 20.
Contain the layer of vinylidene fluoride-TFE copolymer, the layer that contains the layer of vinylidene fluoride-trifluoro-ethylene copolymer and contain polyvinylidene fluoride, improve the viewpoint of piezoelectricity certainly and consider, also can extend processing.Extend 3～10 times the extension that is preferably the single shaft direction herein.This extension is handled and is got final product by customary way.
For giving piezoelectricity, carry out split pole and handle (polarizationtreatment) (also being called polarization and handling (polingtreatment)) and get final product the layer that contains vinylidene fluoride-TFE copolymer, the layer that contains the layer of vinylidene fluoride-trifluoro-ethylene copolymer and contain polyvinylidene fluoride.This split pole is handled and can be undertaken by Corona discharge Treatment or customary way.For example, sandwich from the two sides of film, apply 0.1 second～DC electric field of 30～400MV/m of 60 minutes with metal electrode etc.
Sheet transparent piezoelectric body layer 21 also can contain the adjuvant that makes an addition in the resin film in not destroying in the scope of its piezoelectricity and transparency.
The thickness of sheet transparent piezoelectric body layer 21 is generally 1～200 μ m, and the viewpoint of self-induced transparency degree is considered, is preferably below the 50 μ m, considers from the viewpoint of the detection sensitivity of touch-control pressure, is preferably 20 μ m～100 μ m.
Sheet transparent piezoelectric body layer 21 both can be simple layer, also can be plural layer.
Transparent piezoelectric sheet 20 considers from the viewpoint of easy operating, is preferably to be accommodated in the framework 24.As shown in Figure 2, comprising the contact panel integral body that transparent piezoelectric sheet 20 and position of touch detect with panel 10 also can be accommodated in the framework 24.
The 1st transparent plate electrode 22 and the 2nd transparent plate electrode 23 for example can use inorganic electrodes such as ITO (tin indium oxide) and tin oxide and be selected from the electrode that thiophene is the electric conductive polymer of electric conductive polymer, polyaniline and polypyrrole etc. so long as have transparency person and get final product.
The 1st transparent plate electrode 22 and the 2nd transparent plate electrode 23 can be formed on the face of sheet transparent piezoelectric body layer 21 by for example utilizing sputtering method or vapour deposition method etc. respectively, and are disposed on the face of sheet transparent piezoelectric body layer 21.
As required, also can in the 1st transparent plate electrode 22 with sheet transparent piezoelectric body layer 21 be on the face of opposition side, dispose the 1st slide member 32.
Again, similarly, as required, also can in the 2nd transparent plate electrode 22 with sheet transparent piezoelectric body layer 21 be on the face of opposition side, dispose the 2nd slide member 33.
When the situation of aforesaid aspect, for example, the 1st transparent plate electrode 22 can be formed on the one side of the 1st slide member 32 by sputtering method or vapour deposition method etc.As additive method, also can pass through bonding agent (for example, epoxy bonding agent) and on the one side of the 1st slide member 33 gluing the 1st transparent plate electrode 22.Then, sheet transparent piezoelectric body layer 21 can be by spin-coating method etc., and is formed on the face that is formed with the 1st transparent plate electrode 22 sides of the 1st slide member 33 on the face of (comprise the 1st transparent plate electrode 22 with the 1st slide member 33 on the face of opposition side).
When disposing the 1st slide member 32 with sheet transparent piezoelectric body layer 21 on the face of opposition side in the 1st transparent plate electrode 22, and in the 2nd transparent plate electrode 22 with sheet transparent piezoelectric body layer 21 when disposing the 2nd slide member 33 on the face of opposition side, contact panel 100a of the present invention comprises as shown in Figure 2:
Position of touch detects uses contact panel 100a; And
Transparent piezoelectric sheet 20a; And
Above-mentioned transparent piezoelectric sheet 20a comprises:
(1) the 1st slide member 32, it is in following the 1st transparent plate electrode 22 that is formed with;
(2) sheet transparent piezoelectric body layer 21; And
(3) the 2nd slide members 33, it is in top the 2nd transparent plate electrode 23 that is formed with;
Above-mentioned the 1st slide member 32, above-mentioned sheet transparent piezoelectric body layer 21 and above-mentioned the 2nd slide member 33 be according to this order and lamination.
As the 1st slide member 32 and the 2nd slide member 33, for example can use polyethylene terephthalate thin film, but as long as, then be not particularly limited for transparent and can form the 1st transparent plate electrode 22 and the 1st transparent plate electrode.
The thickness of the 1st slide member 32 and the 2nd slide member 33 is preferably 1 μ m～200 μ m.When this thickness is excessive, the anxiety that exists the detection sensitivity of the reduction of transparency and touch-control pressure to reduce.
Transparent piezoelectric sheet 20a considers from the viewpoint of easy operating, is preferably to be accommodated in the framework 24.As shown in Figure 2, comprising the contact panel integral body that transparent piezoelectric sheet 20a and position of touch detect with panel 10 also can be accommodated in the framework 24.Again, though not shown, also can when taking in transparent piezoelectric sheet 20, also take in panel of LCD.
Viewpoint from the accuracy of touch-control pressure detection considers, as shown in Figure 3, the coincidence part in overlooking when observing of above-mentioned the 1st transparent plate electrode 22 and above-mentioned the 2nd transparent plate electrode 23 is preferably, and does not overlap with said frame 24 in overlooking when observing.
The 1st wire portion 222 that above-mentioned the 1st transparent plate electrode 22 comprises the 1st transparent plate electrode part 221 and above-mentioned the 1st transparent plate electrode part 221 is connected with the outside wiring of said frame,
The 2nd wire portion 232 that above-mentioned the 2nd transparent plate electrode 23 comprises the 2nd transparent plate electrode part 231 and above-mentioned the 2nd transparent plate electrode part 231 is connected with the outside wiring of said frame.
Be preferably, the profile of above-mentioned the 1st transparent plate electrode part 231 is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, perhaps as shown in Figure 3, the profile of above-mentioned the 2nd transparent plate electrode part 231 is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part 221 when observing.
The 1st transparent plate electrode part 221 and the 2nd transparent plate electrode part 231 both can cover the whole interarea of sheet transparent piezoelectric body layer 21 (not shown among Fig. 3) respectively, also can cover its part, but this moment, when the plate electrode portion of the plate electrode of one covers the situation of whole interarea of sheet transparent piezoelectric body layer 21, inevitably, the plate electrode portion of another plate electrode only covers the part of the interarea of sheet transparent piezoelectric body layer 21.
Moreover in overlooking when observing, the profile of the profile of the 1st transparent plate electrode part 221 and the 2nd transparent plate electrode part 231 is not present in the outside of profile of the interarea of sheet transparent piezoelectric body layer 21 respectively.
The 1st transparent plate electrode part 221 and the 2nd transparent plate electrode part 231 become the part that can detect the position of pushing in overlooking observation time institute's superposed part, so ratio with respect to the area of this intersection of the area of the interarea of sheet transparent piezoelectric body layer 21, be preferably more than 70%, be more preferably more than 80%.
Again,, be preferably respectively more than 80%, be more preferably more than 90% with respect to the area of the 1st transparent plate electrode part 221 of the area of the interarea of sheet transparent piezoelectric body layer 21 and the area of the 2nd transparent plate electrode part 231.
By adopting so structure, the permissible range of the skew when overlooking observation of the 1st transparent plate electrode part 221 during manufacturing and the 2nd transparent plate electrode part 231 will increase, so can reduce the defective products rate when making.
Again, with respect to the area of the interarea of sheet transparent piezoelectric body layer 21, the 1st transparent plate electrode part 221 and the 2nd transparent plate electrode part 231 be respectively at the ratio of smaller's area in the area of overlooking when observing with the interarea superposed part of sheet transparent piezoelectric body layer 21, be preferably more than 70%, be more preferably more than 80%.
Therefore, can detect touch-control pressure with wide area.
Moreover the 1st transparent plate electrode part 221 and the 1st wire portion 222 and above-mentioned the 2nd transparent plate electrode part 231 and the 2nd wire portion 232 both can form as one respectively as shown in Figure 4, also can be linked by former separately out of the ordinary.Again, the 1st wire portion 222 and the 2nd wire portion 232 also can be distinguished as shown in Figure 4, give prominence to from above-mentioned sheet transparent piezoelectric body layer 21.
Be preferably, the electrode of the touch-control side in the 1st transparent plate electrode 22 and the 2nd transparent plate electrode 23 is a ground-electrode.Therefore, can reduce the noise of output voltage.
Herein, it is resistance membrane type or electrostatic capacitive that position of touch detects with contact panel 10, in above-mentioned transparent piezoelectric sheet 20 and above-mentioned position of touch detect with contact panel 10 with the touch-control side be the face of opposition side when joining the situation that disposes, but the transparent plate electrode double as position of touch of above-mentioned touch-control side detects the ground-electrode (not shown) of usefulness contact panel 10.
That is, when this situation, it is himself not bring into play separately as position of touch to detect the actor that uses panel that position of touch detects with contact panel 10.
Therefore, the structure of contact panel of the present invention can be simplified, manufacturing cost can be reduced thus.
Position of touch detects with contact panel 10 as required, further comprises elastomeric sheets (not shown).Therefore, can detect touch-control pressure with high sensitivity more.
Elastomeric sheets is preferably and is disposed between piezoelectric patches and the LCD.
Consider that from the viewpoint that obtains above-mentioned effect the thickness that is preferably elastomeric sheets is 10 μ m～2mm.
If push contact panel 100, then when all scenario, all can detect and detect position of touch, and can detect touch-control pressure by transparent piezoelectric sheet 20 with contact panel 10 by position of touch to the hollow arrow A of for example Fig. 1 or the locality of A '.
＜transparent piezoelectric sheet (example 1) 〉
Fig. 5 is the figure of an example (transparent piezoelectric sheet 200) of expression transparent piezoelectric sheet of the present invention.
Transparent piezoelectric sheet 200 comprises:
Sheet transparent piezoelectric body layer 21;
The 1st transparent plate electrode 22, it is to be disposed on the one side of this sheet transparent piezoelectric body layer;
The 2nd transparent plate electrode 23, it is to be disposed on the another side of this sheet transparent piezoelectric body layer; And
Stick together portion 5.
Herein, the member with symbol identical with the symbol of the example (contact panel 100) of contact panel of the present invention be with contact panel 100 in the identical person of member, its explanation of Therefore, omited.
Sticking together portion 5 can be with any size, number, shape and be present on the surface of sheet transparent piezoelectric body layer the 21, the 1st transparent plate electrode 22 and the 2nd transparent plate electrode 23.The thickness that sticks together portion 5 is preferably 200 μ m following (for example, 2～200 μ m).When this thickness was excessive, transparency might reduce.Sticking together portion 5 is preferably transparent.
Transparent piezoelectric sheet 200 can attach on the surface of position of touch detection with article such as contact panel and display device by the portion of sticking together 5, thereby can give touch-control pressure detection function to above-mentioned article.
Transparent piezoelectric sheet 200 is preferably and detects with the contact panel combination with position of touch and use.
The form that this position of touch detects with contact panel is preferably resistance membrane type or electrostatic capacitive.
＜transparent piezoelectric sheet (example 2) 〉
Comprise in the employed transparent piezoelectric sheet 20 in the above-mentioned contact panel 100 again:
Sheet transparent piezoelectric body layer;
The 1st transparent plate electrode 22, it is to be disposed on the one side of this sheet transparent piezoelectric body layer; And
The 2nd transparent plate electrode 23, it is to be disposed on the another side of this sheet transparent piezoelectric body layer; And
Above-mentioned the 1st transparent plate electrode 22 comprises the 1st transparent plate electrode part 221,
Above-mentioned the 2nd transparent plate electrode 23 comprises the 2nd transparent plate electrode part 231,
The profile of above-mentioned the 1st transparent plate electrode part 221 is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part 231 when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part 231 comprises the profile of above-mentioned the 1st transparent plate electrode part 221 when overlooking observation,
So the transparent piezoelectric sheet also is an example of the present invention.
Herein, the member with symbol identical with the symbol of the example (contact panel 100) of contact panel of the present invention be with contact panel 100 in the identical person of member, its explanation of Therefore, omited.
The transparent piezoelectric sheet 20 of this aspect can carry out the detection of touch-control pressure with high precision.Again, the precision of the transparent piezoelectric sheet 20 of this aspect is not vulnerable to the intensity of member of formation of contact panel and the influence of transparent piezoelectric sheet 20.
The transparent piezoelectric sheet of＜subsidiary framework 〉
Fig. 6 is the figure of an example (the transparent piezoelectric sheet 200a of subsidiary framework) of the transparent piezoelectric sheet of expression subsidiary framework of the present invention.
The transparent piezoelectric sheet 200a of subsidiary framework comprises:
Transparent piezoelectric sheet 2;
Framework 24, it is to take in this transparent piezoelectric sheet; And
Stick together the 5a of portion, it is to be arranged on the surface of this framework 24a; And
Above-mentioned transparent piezoelectric sheet 2 comprises:
(1) sheet transparent piezoelectric body layer 21;
(2) the 1st transparent plate electrodes 22, it is to be disposed on the one side of this sheet transparent piezoelectric body layer; And
(3) the 2nd transparent plate electrodes 23, it is to be disposed on the another side of this sheet transparent piezoelectric body layer.
Herein, the member with symbol identical with the symbol of the example (contact panel 100) of contact panel of the present invention be with contact panel 100 in the identical person of member, its explanation of Therefore, omited.
The portion 5a of sticking together can be with any size, number, shape and is present on the surface of framework 24a.
The thickness that sticks together the 5a of portion is preferably 200 μ m following (for example 2～200 μ m).When this thickness was excessive, transparency might reduce.
The transparent piezoelectric sheet 200a of subsidiary framework can attach on the surface of position of touch detection with article such as contact panel and display device by sticking together the 5a of portion, thereby can give touch-control pressure detection function to above-mentioned article.
Be arranged at the whole surface of framework 24a or be arranged at a part as shown in Figure 7 upward as long as this sticks together the 5a of portion.
The transparent piezoelectric sheet 200a of subsidiary framework is preferably and detects with the contact panel combination with position of touch and use.The form that this position of touch detects with contact panel is preferably resistance membrane type or electrostatic capacitive.
＜position of touch detects with contact panel and display device 〉
Sticking the position of touch detection that the transparent piezoelectric of transparent piezoelectric sheet of the present invention or subsidiary framework of the present invention sheet is arranged also is an example of the present invention with contact panel or display device.
Again, sticking the position of touch detection that the transparent piezoelectric of transparent piezoelectric sheet of the present invention or subsidiary framework of the present invention sheet is arranged is an example of contact panel of the present invention with contact panel.
For these, given the function that detects touch-control pressure.
Embodiment
Below, further explain the present invention by embodiment and test case, but the present invention is not limited thereto.
Production Example 1～4 (manufacturing of film)
By following autofrettage, make the vinylidene fluoride-TFE copolymer film (mol ratio 80: 20) that is respectively 20 μ m (embodiment 1), 50 μ m (embodiment 2), 80 μ m (embodiment 3) and 100 μ m (embodiment 4) as the thickness of sheet transparent piezoelectric body layer.
The film of thickness 20 μ m (embodiment 1) and 50 μ m (embodiment 2) be methyl ethyl ketone (methylethylketone) solution casting with vinylidene fluoride-TFE copolymer (mol ratio 80: 20) on the PET base material, and make the solvent gasification and be shaped in 150 ℃.
The film of thickness 80 μ m (embodiment 3) and 100 μ m (embodiment 4) is to comprise the graininess fused mass of vinylidene fluoride-TFE copolymer (mol ratio 80: 20), and utilization is provided with the equipment for making film of T mould and is shaped.
Comparative example 1～4 (manufacturing of film)
In contrast,, make vinylidene fluoride-trifluoro-ethylene copolymer film (mol ratio 75: 25) that thickness is respectively 30 μ m (comparative example 1), 50 μ m (comparative example 2), 80 μ m (comparative example 3) and 100 μ m (comparative example 4) by following autofrettage again.
The film of thickness 30 μ m (comparative example 1) and 50 μ m (comparative example 2) be methyl ethyl ketone solution casting with vinylidene fluoride-trifluoro-ethylene copolymer (mol ratio 75: 25) on the PET base material, and make the solvent gasification and be shaped in 150 ℃.
The film of thickness 80 μ m (comparative example 3) and 100 μ m (comparative example 4) is to contain the graininess fused mass of vinylidene fluoride-trifluoro-ethylene copolymer (mol ratio 75: 25), and utilization is provided with the equipment for making film of T mould and is shaped.
Test case 1
(light transmission test and HAZE (turbidity) test)
Use the film of above-mentioned film forming, under following condition, implement light transmission test and HAZE (turbidity) test.
Light transmission test: use the smart mechanism of Japan to make the HAZEGuardII that incorporated company of institute makes, measure according to ASTMD1003 (American Society for Testing and MaterialsD1003, U.S. material and the test standard D1003 of association).
HAZE test: use the smart mechanism of Japan to make the HAZEGuardII that incorporated company of institute makes, measure according to ASTMD1003.
The total light transmittance and the HAZE value of vinylidene fluoride-TFE copolymer film of thickness 20 μ m (embodiment 1), 50 μ m (embodiment 2) and 80 μ m (embodiment 3) are respectively 95% and 5.
The total light transmittance of vinylidene fluoride-TFE copolymer film of thickness 100 μ m (embodiment 4) is 95%, and the HAZE value is 7.With this film be sandwiched in two glass plates in, after 150 ℃ are carried out 10 minutes thermal treatment, it is cooled to till the room temperature rapidly.The thickness of the film after the processing is 100 μ m, and total light transmittance is 94%, and the HAZE value is 8.
The total light transmittance and the HAZE value of vinylidene fluoride-trifluoro-ethylene copolymer film (mol ratio 75: 25), when the situation of thickness 30 μ m (comparative example 1) is 94% and 14, when the situation of thickness 50 μ m (comparative example 2) is 95% and 18, and is 95% and 27 when the situation of thickness 80 μ m (comparative example 3).
The total light transmittance of vinylidene fluoride-trifluoro-ethylene copolymer (mol ratio 75: 25) of thickness 100 μ m (comparative example 4) is 93%, and the HAZE value is 35.With this film be sandwiched in two glass plates in, after 150 ℃ are carried out 10 minutes thermal treatment, it is cooled to till the room temperature rapidly.The thickness of the film after the processing is 100 μ m, and total light transmittance is 93%, and the HAZE value is 88.
Show the result in table 1.As clear and definite according to these institutes, vinylidene fluoride-TFE copolymer film and vinylidene fluoride-trifluoro-ethylene copolymer film is in the scope of the thickness of having tested, and all light transmission is higher, and has equal light transmission.
But about turbidity (transparency), vinylidene fluoride-trifluoro-ethylene copolymer film is when the thickness thickening, and transparency can reduce, and is relative with it, and vinylidene fluoride-TFE copolymer film demonstrates higher transparency in the scope of the thickness of having tested.Again, compare with vinylidene fluoride-trifluoro-ethylene copolymer film, rapidly the variation of the HAZE value the during situation of cooling is less after thermal treatment for vinylidene fluoride-TFE copolymer film.
Table 1
Figure BDA0000052646230000211
Test case 2
The film of the embodiment 2 that use table 1 is disclosed, the both sides by sputtering method in the transparent piezoelectric sheet of thickness 50 μ m form ITO.The sheet resistance of electrode (sheetresistance) is 10 Ω/Sq..The strong dielectric medium test macro RT6000HVS that uses RadiantTechnology incorporated company to make is to the processing that polarizes of this transparent piezoelectric sheet.
Between the touch surface flaggy (thickness 1mm) and liquid crystal panel layer of the resistance membrane type of the formation LCD part of the PocketGearMC/PG5000 (trade name) that NEC incorporated company makes, clip the transparent piezoelectric sheet after the polarization processing that is formed with above-mentioned electrode and form contact panel.
Result after exerting pressure by pointer (touchpen) is, can obtain the electric signal shown in the arrow 1 of Fig. 8 and Fig. 9 (arrow 2 is electric signal of the passage that is not used to measure).
Change by the result of the intensity that pointer is pushed is, (Fig. 8) can obtain the electric signal of 0.20V when pushing to 22kN/m2, and (Fig. 9) can obtain the voltage signal of 0.11V when pushing to 12kN/m2.Pressing force is big more, then can obtain big more voltage signal.Voltage signal is that pocket USB (UniversalSerialBus, universal serial bus) oscillograph (oscilloscope) the UDS-5202 measurement that utilizes Japanese DataSystem to make is amplified to 10 times of persons with it.
Test case 3
Use the film after polarization is handled of the embodiment 2 in the table 1, have the PET film of ITO to be sandwiched in the both sides of the transparent piezoelectric sheet of thickness 50 μ m with evaporation.
On the contact panel of the resistance membrane type of the LCD part of the ZaurusSL-C760 (trade name) that Sharp KK makes, the above-mentioned transparent piezoelectric sheet of lamination and form contact panel.
Result after exerting pressure by pointer is, the size of the voltage signal of being exported changes according to pressing force, can obtain the result identical with test case 2.
Test case 4
(detection of piezoelectric signal)
(1) manufacturing of piezoelectric body layer
By following autofrettage, make vinylidene fluoride-TFE copolymer film (mol ratio 80: 20) as the thickness 100 μ m of piezoelectric body layer.
The film of thickness 100 μ m be methyl ethyl ketone solution casting with vinylidene fluoride-TFE copolymer (mol ratio 80: 20) on the PET base material, and make the solvent gasification and be shaped in 150 ℃.By the uniaxial extension machine, above-mentioned film is extended in 110 ℃.The film that is obtained extends about 4.5 times, and its thickness is about 25 μ m.
(2) polarization is handled
Use metal electrode from the above-mentioned extension film of above-below direction clamping, and in room temperature apply 5 minutes 1, the DC electric field of 200kV/cm is so that its polarization.
(3) detection of piezoelectric signal
So that evaporation has PET film (the thickness 125 μ m of ITO; The manufacturing of Tobi incorporated company) ITO evaporation face is inboard state, handles film from the above-mentioned polarization of above-below direction clamping, and then uses two glass plates (thickness 2mm) to carry out clamping from above-below direction.
The metal bar free-falling that makes weight 20g and 50g utilizes pocket USB numerical digit storage oscilloscope (UDS-5252 to the glass plate of top; Japan Data incorporated company makes), and there is the terminal line of extracting out in the PET film of ITO to be connected, and measures the signal voltage of place acquisition since then from evaporation up and down.
Calculate potential energy according to distance of fall again.Its result is shown in Figure 10 (weight of rod is 20g) and Figure 11 (weight of rod is 50g), can confirm that output voltage and potential energy change in direct ratioly.
Test case 5
By heating in vacuum evaporation (Hitachi makes HUS-5), and to the polarize whole two sides of the film after handling of vinylidene fluoride-TFE copolymer film (mol ratio 80: 20) of the thickness 25 μ m of gained in the test case 4, the AM aluminum metallization electrode (below, be called the two sides evaporated film).
Then, utilize tapping and plugging machine the two sides evaporated film to be cut into the circle of diameter 11mm.Use normal temperature hardened DOTITE (Teng Cang changes into incorporated company and makes) in the center of circle on the two sides of above-mentioned circular two sides evaporated film difference gluing metal wire, and use electric impedance analyzer (impedanceanalyzer) (Yokogawa HewlettPackard makes 4194A), calculate electric mechanical couplin coefficent kt by resonance antiresonance method.Calculating is according to K.Koga, H.Ohigashi, J.Appl.Phys., 59,2142 (1986)) method that disclosed carries out.
Its result, electric mechanical couplin coefficent kt are 0.07.
Description of reference numerals
2 transparent piezoelectric sheets
5 stick together section
5a sticks together section
10 position of touch detect uses contact panel
20 transparent piezoelectric sheets
The 20a transparent piezoelectric sheet
21 sheet transparent piezoelectric body layers
22 the 1st transparent plate electrodes
23 the 2nd transparent plate electrodes
24 frameworks
The 24a framework
32 the 1st slide members
33 the 2nd slide members
100 contact panels
The 100a contact panel
200 transparent piezoelectric sheets
The transparent piezoelectric sheet of the subsidiary framework of 200a
221 the 1st transparent plate electrode part
222 the 1st wire portions
231 the 2nd transparent plate electrode part
232 the 2nd wire portions

Claims (38)

1. transparent piezoelectric sheet, it comprises:
Sheet transparent piezoelectric body layer;
The 1st transparent plate electrode, it is disposed on the one side of this sheet transparent piezoelectric body layer; And
The 2nd transparent plate electrode, it is disposed on the another side of this sheet transparent piezoelectric body layer; And
Above-mentioned the 1st transparent plate electrode comprises the 1st transparent plate electrode part,
Above-mentioned the 2nd transparent plate electrode comprises the 2nd transparent plate electrode part,
The profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing.
2. transparent piezoelectric sheet according to claim 1, the thickness of wherein above-mentioned sheet transparent piezoelectric body layer is 1～200 μ m.
3. transparent piezoelectric sheet according to claim 1 and 2, wherein above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
4. transparent piezoelectric sheet according to claim 3, wherein above-mentioned organic polymer is vinylidene fluoride-TFE copolymer.
5. according to each described transparent piezoelectric sheet in the claim 1 to 4, wherein
Above-mentioned the 1st transparent plate electrode further comprises the 1st wire portion, and
Above-mentioned the 2nd transparent plate electrode further comprises the 2nd wire portion.
6. according to each described transparent piezoelectric sheet in the claim 1 to 5, it further comprises the portion of sticking together.
7. according to each described transparent piezoelectric sheet in the claim 1 to 6, it is to detect with the contact panel combination with position of touch to use.
8. transparent piezoelectric sheet according to claim 7, it is resistance membrane type or electrostatic capacitive that wherein above-mentioned position of touch detects with contact panel.
9. the transparent piezoelectric sheet of a subsidiary framework, it is to be accommodated in the framework according to each described transparent piezoelectric sheet in the claim 1 to 8,
The coincidence part when overlooking observation of above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode does not overlap with said frame in overlooking when observing.
10. transparent piezoelectric sheet, it comprises:
Sheet transparent piezoelectric body layer;
The 1st transparent plate electrode, it is disposed on the one side of this sheet transparent piezoelectric body layer;
The 2nd transparent plate electrode, it is disposed on the another side of this sheet transparent piezoelectric body layer; And
Stick together portion.
11. transparent piezoelectric sheet according to claim 10, it is to detect with the contact panel combination with position of touch to use.
12. transparent piezoelectric sheet according to claim 11, it is resistance membrane type or electrostatic capacitive that wherein above-mentioned position of touch detects with contact panel.
13. according to each described transparent piezoelectric sheet in the claim 10 to 12, the thickness of wherein above-mentioned sheet transparent piezoelectric body layer is 1～200 μ m.
14. according to each described transparent piezoelectric sheet in the claim 10 to 13, wherein above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
15. transparent piezoelectric sheet according to claim 14, wherein organic polymer is vinylidene fluoride-TFE copolymer.
16. according to each described transparent piezoelectric sheet in the claim 10 to 15, wherein
Above-mentioned the 1st transparent plate electrode comprises the 1st transparent plate electrode part,
Above-mentioned the 2nd transparent plate electrode comprises the 2nd transparent plate electrode part,
The profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing.
17. the transparent piezoelectric sheet of a subsidiary framework, it is to be accommodated in the framework according to each described transparent piezoelectric sheet in the claim 10 to 16,
The coincidence part when overlooking observation of above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode does not overlap with said frame in overlooking when observing.
18. the transparent piezoelectric sheet of a subsidiary framework, it comprises:
The transparent piezoelectric sheet;
Framework, it is used to take in this transparent piezoelectric sheet; And
Stick together portion, it is arranged on the surface of this framework; And
Above-mentioned transparent piezoelectric sheet comprises:
(1) sheet transparent piezoelectric body layer;
(2) the 1st transparent plate electrodes, it is disposed on the one side of this sheet transparent piezoelectric body layer; And
(3) the 2nd transparent plate electrodes, it is to be disposed on the another side of this sheet transparent piezoelectric body layer.
19. according to the transparent piezoelectric sheet of claim 17 or 18 described subsidiary frameworks, wherein
Above-mentioned the 1st transparent plate electrode further comprises the 1st wire portion that above-mentioned the 1st transparent plate electrode part is connected with the outside wiring of said frame,
Above-mentioned the 2nd transparent plate electrode further comprises the 2nd wire portion that above-mentioned the 2nd transparent plate electrode part is connected with the outside wiring of said frame.
20. according to the transparent piezoelectric sheet of each described subsidiary framework in the claim 17 to 19, itself and position of touch detect with the contact panel combination and use.
21. the transparent piezoelectric sheet of subsidiary framework according to claim 20, it is resistance membrane type or electrostatic capacitive that wherein above-mentioned position of touch detects with contact panel.
22. a contact panel, it comprises:
Position of touch detects uses contact panel; And
Be disposed at this position of touch detect with on one side of contact panel according to each described transparent piezoelectric sheet in claim 1 to 8 and the claim 10 to 16 or according to the transparent piezoelectric sheet of each described subsidiary framework in claim 9 and the claim 17 to 21.
23. contact panel according to claim 22, it is resistance membrane type or electrostatic capacitive that wherein above-mentioned position of touch detects with contact panel.
24. according to claim 22 or 23 described contact panels, it further comprises elastomeric sheets.
Use contact panel 25. a position of touch detects, it sticks the transparent piezoelectric sheet of with good grounds claim 6 or 10 described transparent piezoelectric sheets or subsidiary framework according to claim 18 by the above-mentioned portion of sticking together.
26. a display device, it is the transparent piezoelectric sheet that sticks with good grounds claim 6 or 10 described transparent piezoelectric sheets or subsidiary framework according to claim 18 by the above-mentioned portion of sticking together.
27. a contact panel, it comprises:
Position of touch detects uses contact panel; And
The transparent piezoelectric sheet, it is disposed at this position of touch and detects with on the one side of contact panel; And
Above-mentioned transparent piezoelectric sheet comprises:
(1) sheet transparent piezoelectric body layer;
(2) the 1st transparent plate electrodes, it is disposed on the one side of this sheet transparent piezoelectric body layer; And
(3) the 2nd transparent plate electrodes, it is to be disposed on the another side of this sheet transparent piezoelectric body layer.
28. contact panel according to claim 27, the thickness of wherein above-mentioned sheet transparent piezoelectric body layer is 1～200 μ m.
29. according to claim 27 or 28 described contact panels, wherein above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
30. contact panel according to claim 29, wherein above-mentioned organic polymer is vinylidene fluoride-TFE copolymer.
31. according to each described contact panel in the claim 27 to 30, wherein
Above-mentioned transparent piezoelectric sheet is to be accommodated in the framework,
The coincidence part when overlooking observation of above-mentioned the 1st transparent plate electrode and above-mentioned the 2nd transparent plate electrode does not overlap with said frame in overlooking when observing.
32. contact panel according to claim 31, wherein
The 1st wire portion that above-mentioned the 1st transparent plate electrode comprises the 1st transparent plate electrode part and above-mentioned the 1st transparent plate electrode part is connected with the outside wiring of said frame,
The 2nd wire portion that above-mentioned the 2nd transparent plate electrode comprises the 2nd transparent plate electrode part and above-mentioned the 2nd transparent plate electrode part is connected with the outside wiring of said frame,
The profile of above-mentioned the 1st transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 2nd transparent plate electrode part when observing, and the profile of perhaps above-mentioned the 2nd transparent plate electrode part is in overlooking the profile that comprises above-mentioned the 1st transparent plate electrode part when observing.
33. according to any described contact panel in the claim 27 to 32, wherein the electrode of the touch-control side in the 1st transparent plate electrode and the 2nd transparent plate electrode is a ground-electrode.
34. contact panel according to claim 33, wherein above-mentioned transparent piezoelectric sheet be connected in above-mentioned position of touch detect with contact panel with the touch-control side be that the face of opposition side disposes, and the transparent plate electrode double as position of touch of above-mentioned touch-control side detects the ground-electrode of usefulness contact panel.
35. a contact panel, it comprises:
Position of touch detects uses contact panel; And
The transparent piezoelectric sheet, it is disposed at this position of touch and detects with on the one side of contact panel; And
Above-mentioned transparent piezoelectric sheet comprises:
(1) the 1st slide member, it is in following the 1st transparent plate electrode that is formed with;
(2) sheet transparent piezoelectric body layer; And
(3) the 2nd slide members, it is in top the 2nd transparent plate electrode that is formed with;
Above-mentioned the 1st slide member, above-mentioned sheet transparent piezoelectric body layer and above-mentioned the 2nd slide member be according to this order and lamination.
36. according to each described contact panel in the claim 27 to 35, wherein above-mentioned sheet transparent piezoelectric body layer contains organic polymer.
37. contact panel according to claim 36, wherein organic polymer is vinylidene fluoride-TFE copolymer.
38. according to each described contact panel in the claim 27 to 37, it further comprises elastomeric sheets.
CN200980138308XA 2008-10-03 2009-10-01 Touch panel and transparent piezoelectric sheet Pending CN102165400A (en)

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JP2008-259078 2008-10-03
PCT/JP2009/005074 WO2010038466A1 (en) 2008-10-03 2009-10-01 Touch panel and transparent piezoelectric sheet

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WO2010038466A1 (en) 2010-04-08
TW201017496A (en) 2010-05-01

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Application publication date: 20110824