WO2010038466A1 - Touch panel and transparent piezoelectric sheet - Google Patents
Touch panel and transparent piezoelectric sheet Download PDFInfo
- Publication number
- WO2010038466A1 WO2010038466A1 PCT/JP2009/005074 JP2009005074W WO2010038466A1 WO 2010038466 A1 WO2010038466 A1 WO 2010038466A1 JP 2009005074 W JP2009005074 W JP 2009005074W WO 2010038466 A1 WO2010038466 A1 WO 2010038466A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transparent
- plate electrode
- flat plate
- sheet
- touch panel
- Prior art date
Links
Images
Classifications
-
- 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
Definitions
- the present invention relates to a touch panel and a transparent piezoelectric sheet.
- a display and input device in which a touch panel, which is an input device, is installed on the front surface of a display device such as a liquid crystal display has been put into practical use and is used for an operation panel of a portable device such as a mobile phone and a home appliance.
- a display and input device using a touch panel enables a user to operate the device intuitively by pressing a display on the screen.
- the touch panel that has been put to practical use so far can only detect the position pressed by the user (sometimes referred to as a touch position in the present specification), and the strength pressed by the user (that is, the height of the press). (Strength), which may be referred to as touch pressure in this specification) could not be detected.
- Patent Document 1 discloses a piezoelectric body used as a member of electronic paper and one of the piezoelectric bodies.
- a touch panel unit having a first electrode provided on the side and a second electrode provided on the other side of the piezoelectric body is disclosed.
- Patent Document 2 discloses a first sensor system that is coupled to a touch screen and determines a set of position coordinates for each contact of the touch screen, and is coupled to the touch screen and is touched by a first type object.
- a touch screen system comprising: a second sensor system that confirms each touch on the screen and invalidates each touch on the touch screen with a second type of object;
- a force sensor disposed outside the visual region of the LCD is disclosed.
- Patent Document 3 discloses a transparent pressure-sensitive layer having piezoelectricity between a pair of opposed transparent substrates, A transparent piezoelectric sensor is disclosed, in which a pair of transparent conductive film layers disposed opposite to each other via the transparent pressure sensitive layer is formed.
- the touch panel unit described in Patent Document 1 can obtain a voltage pulse corresponding to the pressure, the touch panel unit does not have transparency as an essential requirement, and the transparency is considered insufficient.
- the touch panel disclosed in Patent Document 1 is a resistive film type, but (a) a capacitance type that can easily detect multiple points, and (b) an ultrasonic type that is suitable for handwriting input and has high durability. And (c) Development of a touch panel capable of detecting the touch pressure as well as the touch position is required for other position detection touch panels having advantages such as optical type with high light transmittance and high durability. It has been. Further, the touch panel disclosed in Patent Document 1 has a problem that it is difficult to divert the existing touch panel manufacturing apparatus that detects only the position pressed by the user.
- the existing touch panel manufacturing device for touch position detection can be used as it is, or the existing touch position detection touch panel itself can be used as it is. If possible, it is simple, and consequently, the manufacturing cost can be reduced. Since the touch screen described in Patent Document 2 can determine false contact, it can be said that it has proposed a concept of detecting the strength of pressing, but what is actually disclosed specifically is as described above. The deflection of the substrate is detected by a force sensor outside the visual region of the LCD, and its accuracy is not sufficient, and for example, it is considered that linear detection is difficult.
- the present invention is a touch panel capable of detecting touch pressure (pressure height (strength)) with high accuracy together with a touch position, (1) High transparency, (2) Various position detection methods can be adopted, and (3) In manufacturing, an existing touch panel manufacturing apparatus for touch position detection is used as it is, or existing An object of the present invention is to provide a touch panel or the like that can directly use the touch position detection touch panel itself.
- the transparent piezoelectric sheet of the first invention is A sheet-like transparent piezoelectric layer; A first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer; A second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer; Including The first transparent flat plate electrode has a first transparent flat plate electrode portion, The second transparent flat plate electrode has a second transparent flat plate electrode portion, The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Includes the outline of the part.
- the transparent piezoelectric sheet of the present invention can be used for detection of touch pressure.
- a transparent piezoelectric sheet for touch pressure detection can be obtained.
- the touch pressure from the upper side of the plate electrode disposed on the surface of the sheet-like transparent piezoelectric layer is directly transmitted to the sheet-like transparent piezoelectric layer, so that the touch pressure can be detected with high accuracy.
- the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent in a plan view.
- the allowable range of deviation in plan view between the first transparent flat plate electrode part and the second transparent flat plate electrode part at the time of manufacturing is increased, and the defective product rate at the time of manufacturing is reduced. it can.
- this configuration it is possible to reliably detect the touch pressure in the entire region within the contour of the narrower area of the first transparent flat plate electrode portion and the second transparent flat plate electrode portion, and as a result (design) It is possible to reliably detect the touch pressure in a wide area.
- the transparent piezoelectric sheet of the present invention when using the transparent piezoelectric sheet of the present invention in combination with a touch position detection touch panel, an area where both the touch pressure and the touch position can be detected, and the touch position detection area of the touch position detection touch panel, Since it becomes possible to make it highly coincident (that is, the touch position detection area of the touch position detection touch panel can be used effectively), the transparent piezoelectric sheet of the present invention is preferably combined with the touch position detection touch panel. Can be used. As a result, (1) high transparency, (2) various position detection methods can be employed, and (3) an existing touch panel manufacturing apparatus for touch position detection can be used as it is. Alternatively, there is provided a touch panel that can use an existing touch position detection touch panel itself as it is.
- the transparent piezoelectric sheet of the second invention is the transparent piezoelectric sheet of the first invention,
- the sheet-like transparent piezoelectric layer has a thickness of 1 to 200 ⁇ m.
- the transparent piezoelectric sheet according to the present invention has a high sensitivity and a high sensitivity without impairing the sensitivity and accuracy of touch position detection of the touch position detecting touch panel, because the thickness of the sheet-like transparent piezoelectric layer is 1 to 200 ⁇ m.
- a function of detecting the touch pressure with accuracy can be provided.
- This thickness is preferably 50 ⁇ m or less from the viewpoint of transparency, and this thickness is preferably 20 ⁇ m to 100 ⁇ m from the viewpoint of touch pressure detection sensitivity.
- a transparent piezoelectric sheet according to a third invention is the transparent piezoelectric sheet according to the first invention or the second invention,
- the sheet-like transparent piezoelectric layer contains an organic polymer.
- the transparent piezoelectric sheet according to the present invention can be manufactured by preparing a sheet-like transparent piezoelectric layer having a large area by containing the organic polymer in the sheet-like transparent piezoelectric layer, so that the manufacturing cost can be reduced. it can.
- the transparent piezoelectric sheet of the fourth invention is the transparent piezoelectric sheet of the third invention,
- the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- the transparent piezoelectric sheet of the invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
- the transparent piezoelectric sheet of the fifth invention is the transparent piezoelectric sheet of any of the first to fourth inventions,
- the first transparent flat plate electrode further includes a first lead portion
- the second transparent flat plate electrode further includes a second lead portion.
- the first lead portion and the second lead portion are portions for connecting the first transparent flat plate electrode and the second transparent flat plate electrode to an external wiring, respectively.
- the first transparent flat plate electrode further includes a first lead portion
- the second transparent flat plate electrode further includes a second lead portion, so that it can be easily connected to an external wiring. Can connect.
- the transparent piezoelectric sheet of the sixth invention is the transparent piezoelectric sheet of any of the first to fifth inventions, Furthermore, an adhesive part is included. Since the transparent piezoelectric sheet of the present invention has an adhesive portion, it can be used by being affixed to an arbitrary object such as a touch position detecting touch panel, and a function of detecting a touch pressure can be imparted to the surface thereof.
- a transparent piezoelectric sheet according to a seventh aspect is the transparent piezoelectric sheet according to any one of the first to sixth aspects, Used in combination with a touch position detection touch panel.
- the transparent piezoelectric sheet of the present invention can be used in combination with a touch position detection touch panel, thereby providing a touch position detection touch panel with a function of detecting a touch pressure.
- the transparent piezoelectric sheet of the eighth invention is the transparent piezoelectric sheet of the seventh invention
- the touch position detecting touch panel is a resistance film type or a capacitance type.
- the transparent piezoelectric sheet of the present invention impairs the advantageous characteristic of the resistive touch panel for detecting touch position that the manufacturing cost is low or the advantageous characteristic of the capacitive touch panel for detecting touch position that multipoint detection is easy. Without this, the function of detecting the touch pressure can be given to them.
- the transparent piezoelectric sheet with a frame of the ninth invention is The transparent piezoelectric sheet according to any one of the first to eighth inventions is accommodated in a frame,
- the overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is a transparent piezoelectric sheet with a frame that does not overlap with the frame in plan view.
- the transparent piezoelectric sheet with a frame according to the present invention has a frame and is easy to handle, and an overlapping portion in a plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is formed in the frame in a plan view. By not overlapping, the touch pressure can be accurately detected.
- the transparent piezoelectric sheet of the tenth invention is A sheet-like transparent piezoelectric layer; A first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer; A second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer; A transparent piezoelectric sheet including an adhesive portion. Since the touch panel of the present invention includes the touch position detection touch panel and the transparent piezoelectric sheet, the touch position can be detected by the touch position detection touch panel, and the touch pressure can be detected by the transparent piezoelectric sheet. Furthermore, the transparent piezoelectric sheet of the present invention can be used by being attached to an arbitrary object such as a touch position detecting touch panel by having an adhesive portion, and can impart a function of detecting a touch pressure to the surface thereof. it can.
- the transparent piezoelectric sheet of the eleventh invention is the transparent piezoelectric sheet of the tenth invention, Used in combination with a touch position detection touch panel.
- the transparent piezoelectric sheet of the present invention can be used in combination with a touch position detection touch panel, thereby providing a touch position detection touch panel with a function of detecting a touch pressure.
- a transparent piezoelectric sheet according to a twelfth invention is the transparent piezoelectric sheet according to the eleventh invention.
- the touch position detecting touch panel is a resistance film type or a capacitance type.
- the transparent piezoelectric sheet of the present invention impairs the advantageous characteristic of the resistive touch panel for detecting touch position that the manufacturing cost is low or the advantageous characteristic of the capacitive touch panel for detecting touch position that multipoint detection is easy. Without this, the function of detecting the touch pressure can be given to them.
- a transparent piezoelectric sheet according to a thirteenth aspect of the present invention is the transparent piezoelectric sheet according to any one of the tenth to twelfth aspects of the present invention,
- the sheet-like transparent piezoelectric layer has a thickness of 1 to 200 ⁇ m.
- the transparent piezoelectric sheet according to the present invention has a high sensitivity and a high sensitivity without impairing the sensitivity and accuracy of touch position detection of the touch position detecting touch panel, because the thickness of the sheet-like transparent piezoelectric layer is 1 to 200 ⁇ m.
- a function of detecting the touch pressure with accuracy can be provided.
- This thickness is preferably 50 ⁇ m or less from the viewpoint of transparency, and this thickness is preferably 20 ⁇ m to 100 ⁇ m from the viewpoint of touch pressure detection sensitivity.
- a transparent piezoelectric sheet according to a fourteenth aspect of the present invention is the transparent piezoelectric sheet according to any one of the tenth aspect to the thirteenth aspect of the present invention,
- the sheet-like transparent piezoelectric layer contains an organic polymer.
- the transparent piezoelectric sheet according to the present invention can be manufactured by preparing a sheet-like transparent piezoelectric layer having a large area by containing the organic polymer in the sheet-like transparent piezoelectric layer, so that the manufacturing cost can be reduced. it can.
- a transparent piezoelectric sheet according to a fifteenth invention is the transparent piezoelectric sheet according to the fifteenth invention,
- the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- the transparent piezoelectric sheet of the invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
- the transparent piezoelectric sheet of the sixteenth aspect of the invention is the transparent piezoelectric sheet of any one of the tenth to fifteenth aspects of the invention
- the first transparent flat plate electrode has a first transparent flat plate electrode portion
- the second transparent flat plate electrode has a second transparent flat plate electrode portion
- the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Includes the outline of the part.
- the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in plan view, or the outline of the second transparent flat plate electrode part is flat.
- the allowable range of deviation in plan view between the first transparent flat plate electrode portion and the second transparent flat plate electrode portion at the time of manufacture becomes large, and there is no problem at the time of manufacture.
- the yield rate can be lowered.
- the transparent piezoelectric sheet with a frame of the seventeenth invention is The transparent piezoelectric sheet of any one of the tenth to sixteenth inventions is housed in a frame,
- the overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is a transparent piezoelectric sheet with a frame that does not overlap the frame in plan view.
- the transparent piezoelectric sheet with a frame according to the present invention has a frame and is easy to handle, and an overlapping portion in a plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is formed in the frame in a plan view. By not overlapping, the touch pressure can be accurately detected.
- the transparent piezoelectric sheet with frame of the eighteenth invention is A transparent piezoelectric sheet; A frame containing the transparent piezoelectric sheet; Including an adhesive portion provided on the surface of the frame,
- the transparent piezoelectric sheet is (1) a sheet-like transparent piezoelectric layer; (2) a first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer; (3) a second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer; Have It is a transparent piezoelectric sheet with a frame.
- the frame-equipped transparent piezoelectric sheet of the present invention can be used for detection of touch pressure.
- the transparent piezoelectric sheet of the present invention is easy to handle by having a frame, and can be used by sticking to an arbitrary object such as a touch position detecting touch panel by having an adhesive portion. Can be provided with a function of detecting the touch pressure.
- the transparent piezoelectric sheet with frame of the nineteenth invention is the transparent piezoelectric sheet with frame of the seventeenth invention or the eighteenth invention
- the first transparent flat plate electrode further includes a first lead portion that connects the first transparent flat plate electrode portion to a wiring outside the frame
- the second transparent flat plate electrode further includes a second lead portion that connects the second transparent flat plate electrode portion to a wiring outside the frame.
- the first transparent flat plate electrode further includes a first lead portion connecting the first transparent flat plate electrode portion to an external wiring of the frame, and the second transparent flat plate electrode. Can be easily connected to external wiring by further including a second lead portion connecting the second transparent flat plate electrode portion to the external wiring of the frame.
- a transparent piezoelectric sheet with a frame according to a twentieth invention is the transparent piezoelectric sheet with a frame according to any of the seventeenth to nineteenth inventions, Used in combination with a touch position detection touch panel.
- the transparent piezoelectric sheet with a frame according to the present invention can be used in combination with a touch position detecting touch panel, thereby imparting a touch pressure detecting function to the touch position detecting touch panel.
- the transparent piezoelectric sheet with frame of the twenty-first invention is the transparent piezoelectric sheet with frame of the twentieth invention
- the touch position detecting touch panel is a resistance film type or a capacitance type.
- the transparent piezoelectric sheet with a frame according to the present invention has an advantageous characteristic of a touch panel for detecting a touch position of a resistive film that manufacturing costs are low, or an advantageous characteristic of a touch panel for detecting a touch position of a capacitive type that multipoint detection is easy.
- the function of detecting the touch pressure can be given to these without impairing the above.
- the touch panel of the 22nd invention is A touch position detection touch panel;
- 21 is a touch panel including any one of the transparent piezoelectric sheets with frames according to the invention. Since the touch panel of the present invention includes the transparent piezoelectric sheet or the transparent piezoelectric sheet with the frame, the touch position can be detected by the touch position detecting touch panel, and the transparent piezoelectric sheet (or the transparent piezoelectric sheet with the frame) is used. Touch pressure can be detected.
- the form of the touch position detection touch panel is not limited, an arbitrary position detection method can be adopted.
- the touch position detection touch panel an existing touch position detection touch panel can be used. Therefore, in the manufacture of the touch panel of the present invention, the touch position detection touch panel itself that has already been mass-produced, and its touch panel Manufacturing equipment is available.
- a touch panel according to a twenty-third invention is the touch panel according to the twenty-second invention,
- the touch position detecting touch panel is a resistance film type or a capacitance type.
- the transparent piezoelectric sheet of the present invention impairs the advantageous characteristic of the resistive touch panel for detecting touch position that the manufacturing cost is low or the advantageous characteristic of the capacitive touch panel for detecting touch position that multipoint detection is easy. Without having.
- the touch panel of the 24th invention is the touch panel according to the 22nd invention or the 23rd invention, Further, an elastic sheet is included.
- the touch panel of the present invention can detect touch pressure with higher sensitivity by further including an elastic sheet.
- the touch position detecting touch panel according to the 25th aspect of the present invention is A touch position detecting touch panel, wherein the transparent piezoelectric sheet according to the sixth or tenth invention or the transparent piezoelectric sheet with a frame according to the eighteenth invention is attached by the adhesive portion.
- the touch position detecting touch panel is provided with a function of detecting a touch pressure by attaching the transparent piezoelectric sheet or the frame-attached transparent piezoelectric sheet.
- the display device of the twenty-sixth aspect of the invention is A transparent piezoelectric sheet according to the sixth or tenth invention or a transparent piezoelectric sheet with a frame according to the eighteenth invention is a display device to which the adhesive portion is attached.
- the display device has a function of detecting a touch pressure by attaching the transparent piezoelectric sheet or the transparent piezoelectric sheet with a frame.
- the touch panel of the 27th invention is A touch position detection touch panel; A transparent piezoelectric sheet disposed on one surface of the touch position detection touch panel, The transparent piezoelectric sheet is (1) a sheet-like transparent piezoelectric layer; (2) a first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer; (3) A touch panel having a second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer. Since the touch panel of the present invention includes the touch position detection touch panel and the transparent piezoelectric sheet, the touch position can be detected by the touch position detection touch panel, and the touch pressure can be detected by the transparent piezoelectric sheet. Since the form of the touch position detection touch panel is not limited, an arbitrary position detection method can be adopted. As the touch position detection touch panel, an existing touch position detection touch panel can be used. Therefore, in the manufacture of the touch panel of the present invention, the touch position detection touch panel itself that has already been mass-produced, and its touch panel Manufacturing equipment is available.
- a touch panel according to a twenty-eighth aspect is the touch panel according to the twenty-seventh aspect
- the sheet-like transparent piezoelectric layer has a thickness of 1 to 200 ⁇ m. Since the touch panel of the present invention has a thickness of 1 to 200 ⁇ m, it can detect the touch position and the touch pressure with high sensitivity and high accuracy. This thickness is preferably 50 ⁇ m or less from the viewpoint of transparency, and this thickness is preferably 20 ⁇ m to 100 ⁇ m from the viewpoint of touch pressure detection sensitivity.
- a touch panel according to a twenty-ninth invention is the touch panel according to the twenty-seventh invention or the twenty-eighth invention.
- the sheet-like transparent piezoelectric layer contains an organic polymer. Since the sheet-like transparent piezoelectric layer contains an organic polymer, the touch panel of the present invention can be prepared by preparing a large-area sheet-like transparent piezoelectric layer, and thus the manufacturing cost can be reduced.
- a touch panel according to a thirtieth invention is the touch panel according to the twenty-ninth invention,
- the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- the touch panel of the present invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
- a touch panel according to a thirty-first invention is the touch panel according to any of the twenty-seventh to thirtieth inventions,
- the transparent piezoelectric sheet is accommodated in a frame,
- An overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap with the frame in plan view.
- the overlapping portion in the plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap with the frame in the plan view, so that the touch pressure can be accurately detected. it can.
- a touch panel according to a thirty-second invention is the touch panel according to the thirty-first invention
- the first transparent flat plate electrode includes a first transparent flat plate electrode portion and a first lead portion that connects the first transparent flat plate electrode portion to a wiring outside the frame
- the second transparent flat plate electrode has a second transparent flat plate electrode portion and a second lead portion that connects the second transparent flat plate electrode portion to a wiring outside the frame
- the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Includes the outline of the part.
- the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is in a plan view.
- a touch panel according to a thirty-third invention is the touch panel according to any of the twenty-seventh to thirty-second inventions, Of the first transparent flat plate electrode and the second transparent flat plate electrode, the touch side electrode is a ground electrode.
- the touch-side electrode of the first transparent flat plate electrode and the second transparent flat plate electrode is a ground electrode, so that noise of the output voltage can be reduced.
- a touch panel according to a thirty-fourth aspect is the touch panel according to thirty-third aspect,
- the transparent piezoelectric sheet is disposed in contact with a surface opposite to the touch side of the touch position detection touch panel, and the transparent flat electrode on the touch side also serves as a ground electrode of the touch position detection touch panel.
- the transparent flat plate electrode on the touch side also serves as the ground electrode of the touch position detecting touch panel, thereby simplifying the structure of the touch panel according to the present invention and thereby reducing the manufacturing cost.
- the touch panel of the 35th invention is A touch position detection touch panel; A transparent piezoelectric sheet disposed on one surface of the touch position detection touch panel, The transparent piezoelectric sheet is (1) a first transparent sheet member in which a first transparent flat plate electrode is formed on the lower surface; (2) a sheet-like transparent piezoelectric layer; (3) a second transparent sheet member having a second transparent flat plate electrode formed on the upper surface; The first transparent sheet member, the sheet-like transparent piezoelectric layer, and the second transparent sheet member are touch panels that are laminated in this order. Since the touch panel of the present invention has the same effect as the touch panel of the first invention, a general-purpose member (eg, PET film with ITO) can be used as a transparent sheet member on which a flat plate electrode is formed. Easy to manufacture.
- a general-purpose member eg, PET film with ITO
- a touch panel according to a thirty-sixth aspect is the touch panel according to any of the twenty-seventh to thirty-fifth aspects,
- the sheet-like transparent piezoelectric layer contains an organic polymer. Since the sheet-like transparent piezoelectric layer contains an organic polymer, the touch panel of the present invention can be prepared by preparing a large-area sheet-like transparent piezoelectric layer, and thus the manufacturing cost can be reduced.
- a touch panel according to a thirty-seventh aspect is the touch panel according to the thirty-sixth aspect,
- the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- the transparent piezoelectric sheet of the invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
- a touch panel according to a thirty-eighth aspect is the touch panel according to any one of the twenty-seventh to thirty-seventh aspects, Further, an elastic sheet is included.
- the touch panel of the present invention can detect touch pressure with higher sensitivity by further including an elastic sheet.
- the touch panel of the present invention includes a touch position detection touch panel and a transparent piezoelectric sheet
- the touch position can be detected with high accuracy by the touch position detection touch panel, and the touch pressure can be detected by the transparent piezoelectric sheet.
- the form of the touch position detection touch panel is not limited, an arbitrary position detection method can be adopted.
- the touch position detection touch panel an existing touch position detection touch panel can be used. Therefore, in manufacturing the touch panel of the present invention, the touch position detection touch panel itself already mass-produced, and its touch panel Manufacturing equipment is available.
- the transparent piezoelectric sheet of the present invention can be used for detection of touch pressure.
- the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in plan view, or the outline of the second transparent flat plate electrode part is A region where both the touch pressure and the touch position can be detected when used in combination with the touch position detection touch panel when including the outline of the first transparent flat plate electrode portion in plan view, and the touch position detection touch panel
- the touch position detection area can be matched to a high degree, and can be suitably used in combination with a touch position detection touch panel.
- the transparent piezoelectric sheet of the present invention when it has an adhesive portion, it can be used by being affixed to an arbitrary object such as a touch position detecting touch panel, and a function for detecting the touch pressure is provided on the surface thereof. can do.
- mode of the touchscreen of this invention Sectional drawing of the one aspect
- (Test Example 2) Graph showing an electric signal caused by the touch of the pressure 12 kN / m 2.
- FIG. 1 is a diagram showing one embodiment (touch panel 100) of the touch panel of the present invention.
- the touch panel 100 includes a touch position detection touch panel 10.
- the touch position detection touch panel 10 is not particularly limited, and a general-purpose touch position detection touch panel can be used.
- Examples of the touch position detection touch panel 10 include a resistive film type, a capacitance type, an ultrasonic type, and an optical type, but are not limited thereto. Among these, (a) a resistive touch panel for touch position detection that is low in manufacturing cost or (b) a capacitive touch panel for touch position detection that facilitates multi-point detection is preferable.
- the advantage of the touch position detecting touch panel of the above method can be maintained as it is.
- the thickness of the touch position detecting touch panel 10 is preferably 100 ⁇ m to 2 mm. If the touch position detecting touch panel 10 is too thick, the transparency of the touch panel of the present invention may be lowered. In particular, when the touch position detection touch panel 10 is arranged on the touch side with respect to the transparent piezoelectric sheet 20, if the touch position detection touch panel 10 is too thick, the touch pressure detection by the transparent piezoelectric sheet 20 is detected. There is a risk that the sensitivity of.
- the transparent piezoelectric sheet 20 is disposed on one surface of the touch position detection touch panel 10. The transparent piezoelectric sheet 20 may be on the touch side with respect to the touch position detection touch panel 10, and may be on the opposite side of the touch side.
- the transparent piezoelectric sheet 20 is (1) a sheet-like transparent piezoelectric layer 21; (2) a first transparent flat plate electrode 22 disposed on one surface of the sheet-like transparent piezoelectric layer 21; (3) It has the 2nd transparent flat plate electrode 23 arrange
- the sheet-like transparent piezoelectric layer 21 is not particularly limited as long as it has piezoelectricity and transparency, but is a layer containing vinylidene fluoride-tetrafluoroethylene copolymer, vinylidene fluoride-ethylene trifluoride.
- Examples include a layer containing a copolymer and a layer containing polyvinylidene fluoride. Among these, a layer made of a vinylidene fluoride-tetrafluoroethylene copolymer is preferable.
- the vinylidene fluoride: tetrafluoroethylene (molar ratio) in the vinylidene fluoride-tetrafluoroethylene copolymer is preferably 50:50 to 90:10 from the viewpoint of piezoelectricity related to the detection sensitivity of the touch pressure. 65:35 to 80:20 are more preferable.
- the layer containing a vinylidene fluoride-tetrafluoroethylene copolymer, the layer containing a vinylidene fluoride-ethylene trifluoride copolymer, and the layer containing a polyvinylidene fluoride are stretched from the viewpoint of improving piezoelectricity. It may be processed. Here, the stretching is preferably 3 to 10 times in the uniaxial direction. The stretching process may be performed by a conventional method.
- Processing In order to impart piezoelectricity to a layer containing a vinylidene fluoride-tetrafluoroethylene copolymer, a layer containing a vinylidene fluoride-ethylene trifluoride copolymer, and a layer containing a polyvinylidene fluoride, Processing (also referred to as polling processing) may be performed.
- the polarization treatment can be performed by a corona discharge treatment or a conventional method.
- the film is sandwiched from both sides with a metal electrode or the like, and a DC electric field of 30 to 400 MV / m is applied for 0.1 seconds to 60 minutes.
- the sheet-like transparent piezoelectric layer 21 may contain an additive added to the resin film as long as the piezoelectricity and transparency are not impaired.
- the thickness of the sheet-like transparent piezoelectric layer 21 is usually 1 to 200 ⁇ m, preferably 50 ⁇ m or less from the viewpoint of transparency, and preferably 20 ⁇ m to 100 ⁇ m from the viewpoint of touch pressure detection sensitivity.
- the sheet-like transparent piezoelectric layer 21 may be a single layer or a plurality of layers.
- the transparent piezoelectric sheet 20 is preferably accommodated in the frame 24 from the viewpoint of ease of handling. As shown in FIG. 2, the entire touch panel including the transparent piezoelectric sheet 20 and the touch position detection panel 10 may be accommodated in the frame 24.
- the first transparent flat plate electrode 22 and the second transparent flat plate electrode 23 only need to have transparency, for example, an inorganic electrode such as ITO (indium tin oxide) and tin oxide, and a thiophene-based conductive polymer, An electrode selected from conductive polymers such as polyaniline and polypyrrole can be used.
- the first transparent flat plate electrode 22 and the second transparent flat plate electrode 23 are formed on the surface of the sheet-like transparent piezoelectric layer 21 by sputtering or vapor deposition, respectively. Can be placed on the surface.
- a first transparent sheet member 32 may be disposed on the surface of the first transparent flat plate electrode 22 opposite to the sheet-like transparent piezoelectric layer 21.
- a second transparent sheet member 33 may be disposed on the surface of the second transparent flat plate electrode 22 opposite to the sheet-like transparent piezoelectric layer 21 if desired.
- the first transparent flat plate electrode 22 can be formed on one surface of the first transparent sheet member 32 by a sputtering method, a vapor deposition method, or the like.
- the first transparent flat plate electrode 22 may be bonded to one surface of the first transparent sheet member 33 by an adhesive (eg, epoxy adhesive).
- the sheet-like transparent piezoelectric layer 21 is formed on the surface of the first transparent sheet member 33 on the first transparent flat plate electrode 22 side (on the surface of the first transparent flat plate electrode 22 opposite to the first transparent sheet member 33).
- a first transparent sheet member 32 is disposed on the surface of the first transparent flat plate electrode 22 opposite to the sheet-shaped transparent piezoelectric layer 21, and the sheet-shaped transparent piezoelectric layer 21 of the second transparent flat plate electrode 22 is disposed.
- the second transparent sheet member 33 is disposed on the surface opposite to the touch panel 100a of the present invention, as shown in FIG.
- the transparent piezoelectric sheet 20a includes (1) a first transparent sheet member 32 having a first transparent flat plate electrode 22 formed on the lower surface; (2) a sheet-like transparent piezoelectric layer 21; (3) a second transparent sheet member 33 having a second transparent flat plate electrode 23 formed on the upper surface, and the first transparent sheet member 32, the sheet-like transparent piezoelectric layer 21, and the second transparent sheet
- the sheet member 33 is laminated in this order.
- the 1st transparent sheet member 32 and the 2nd transparent sheet member 33 although a polyethylene terephthalate film can be used, for example, it is transparent and can form the 1st transparent plate electrode 22 and the 1st transparent plate electrode 23.
- the thicknesses of the first transparent sheet member 32 and the second transparent sheet member 33 are preferably 1 ⁇ m to 200 ⁇ m. If this thickness is too large, the transparency may be lowered and the detection sensitivity of the touch pressure may be lowered.
- the transparent piezoelectric sheet 20a is preferably accommodated in the frame 24 from the viewpoint of ease of handling. As shown in FIG. 2, the entire touch panel including the transparent piezoelectric sheet 20 a and the touch position detection panel 10 may be accommodated in the frame 24. Although not shown, a liquid crystal display panel may be housed together with the transparent piezoelectric sheet 20.
- the overlapping portion in the plan view of the first transparent flat plate electrode 22 and the second transparent flat plate electrode 23 is the frame 24 in the plan view. Does not overlap.
- the first transparent flat plate electrode 22 includes a first transparent flat plate electrode portion 221 and a first lead portion 222 that connects the first transparent flat plate electrode portion 221 to a wiring outside the frame
- the second transparent flat plate electrode 23 includes a second transparent flat plate electrode portion 231 and a second lead portion 232 that connects the second transparent flat plate electrode portion 231 to a wiring outside the frame.
- the outline of the first transparent flat plate electrode part 231 includes the outline of the second transparent flat plate electrode part in plan view, or as shown in FIG.
- the outline includes the outline of the first transparent flat plate electrode portion 221 in plan view.
- Each of the first transparent flat plate electrode portion 221 and the second transparent flat plate electrode portion 231 may cover the entire main surface of the sheet-like transparent piezoelectric layer 21 (not shown in FIG. 3), or covers a part thereof.
- the flat plate electrode portion of one flat plate electrode covers the entire main surface of the sheet-like transparent piezoelectric layer 21
- the flat plate electrode portion of the other flat plate electrode is inevitably formed into a sheet shape. Only the main surface portion of the transparent piezoelectric layer 21 is covered.
- the outline of the first transparent flat plate electrode portion 221 and the outline of the second transparent flat plate electrode portion 231 do not exist outside the outline of the main surface of the sheet-like transparent piezoelectric layer 21, respectively. Since the portion where the first transparent flat plate electrode portion 221 and the second transparent flat plate electrode portion 231 overlap in plan view is a portion where the pressing position can be detected, the overlap with respect to the area of the main surface of the sheet-like transparent piezoelectric layer 21
- the area ratio of the portions to be performed is preferably 70% or more, more preferably 80% or more.
- the area of the first transparent flat plate electrode part 221 and the area of the second transparent flat plate electrode part 231 with respect to the area of the main surface of the sheet-like transparent piezoelectric layer 21 are preferably 80% or more, more preferably 90%. That's it.
- an allowable range of deviation in plan view between the first transparent flat plate electrode portion 221 and the second transparent flat plate electrode portion 231 at the time of manufacturing is increased, and the defective product rate at the time of manufacturing is reduced. Can do.
- the first transparent flat plate electrode portion 221 and the second transparent flat plate electrode portion 231 with respect to the area of the main surface of the sheet-like transparent piezoelectric layer 21 overlap with the main surface of the sheet-like transparent piezoelectric layer 21 in plan view.
- the ratio of the smaller area among the areas of the portions is preferably 70% or more, more preferably 80% or more. Thereby, a touch pressure can be detected in a wide area.
- the first transparent flat plate electrode portion 221 and the first lead portion 222, and the second transparent flat plate electrode portion 231 and the second lead portion 232 may be integrally formed as shown in FIG. Separately formed ones may be connected. Moreover, the 1st lead part 222 and the 2nd lead part 232 may each protrude from the said sheet-like transparent piezoelectric material layer 21, as shown in FIG.
- the touch side electrode of the first transparent flat plate electrode 22 and the second transparent flat plate electrode 23 is a ground electrode. Thereby, noise of the output voltage can be reduced.
- the touch position detection touch panel 10 is a resistive film type or a capacitance type
- the touch-side transparent flat plate electrode serves as a ground electrode of the touch position detection touch panel 10. I can also serve. (Not shown)
- the touch position detection touch panel 10 itself is independent and does not function as a touch position detection panel. Thereby, the structure of the touch panel of this invention can be simplified and manufacturing cost can be lowered
- the touch position detecting touch panel 10 further includes an elastic sheet (not shown) as desired. This makes it possible to detect the touch pressure with higher sensitivity.
- the elastic sheet is preferably disposed between the piezoelectric sheet and the liquid crystal display. From the viewpoint of obtaining the above effect, the thickness of the elastic sheet is preferably 10 ⁇ m to 2 mm.
- FIG. 5 is a view showing an embodiment (transparent piezoelectric sheet 200) of the transparent piezoelectric sheet of the present invention.
- the transparent piezoelectric sheet 200 is A sheet-like transparent piezoelectric layer 21; A first transparent flat plate electrode 22 disposed on one surface of the sheet-like transparent piezoelectric layer; A second transparent flat plate electrode 23 disposed on the other surface of the sheet-like transparent piezoelectric layer; And the adhesive portion 5.
- symbol in one embodiment (touch panel 100) of the touch panel of this invention is the same as the member in the touch panel 100, The description is abbreviate
- the adhesive portion 5 can exist in any size, number, and shape on the surface of the sheet-like transparent piezoelectric layer 21, the first transparent flat plate electrode 22, and the second transparent flat plate electrode 23.
- the thickness of the adhesive portion 5 is preferably 200 ⁇ m or less (eg, 2 to 200 ⁇ m). If this thickness is too large, the transparency may decrease.
- the adhesive part 5 is preferably transparent.
- the transparent piezoelectric sheet 200 can be affixed to the surface of an article such as a touch position detection touch panel and a display device by the adhesive portion 5, and a touch pressure detection function can be imparted to the article.
- the transparent piezoelectric sheet 200 is preferably used in combination with a touch position detecting touch panel.
- the touch position detection touch panel is preferably a resistive film type or a capacitance type.
- ⁇ Transparent Piezoelectric Sheet (Embodiment 2)> Of the transparent piezoelectric sheet 20 used for the touch panel 100 described above, A sheet-like transparent piezoelectric layer; A first transparent flat plate electrode 22 disposed on one surface of the sheet-like transparent piezoelectric layer; A second transparent flat plate electrode 23 disposed on the other surface of the sheet-like transparent piezoelectric layer; Including The first transparent plate electrode 22 has a first transparent plate electrode portion 221; The second transparent plate electrode 23 has a second transparent plate electrode portion 231, The outline of the first transparent flat plate electrode portion 221 includes the outline of the second transparent flat plate electrode portion 231 in plan view, or the outline of the second transparent flat plate electrode portion 231 is the first view in plan view.
- a transparent piezoelectric sheet including the outline of the transparent flat electrode portion 221 is also an embodiment of the present invention.
- symbol in one embodiment (touch panel 100) of the touch panel of this invention is the same as the member in the touch panel 100, The description is abbreviate
- the transparent piezoelectric sheet 20 of this aspect can detect touch pressure with high accuracy. Further, the accuracy of the transparent piezoelectric sheet 20 according to this aspect is not easily affected by the strength of the constituent members of the touch panel and the transparent piezoelectric sheet 20.
- FIG. 6 is a view showing an embodiment (transparent piezoelectric sheet with frame 200a) of the transparent piezoelectric sheet with frame of the present invention.
- the transparent piezoelectric sheet with frame 200a is A transparent piezoelectric sheet 2; A frame 24 containing the transparent piezoelectric sheet; An adhesive portion 5a provided on the surface of the frame 24a,
- the transparent piezoelectric sheet 2 is (1) a sheet-like transparent piezoelectric layer 21; (2) a first transparent flat plate electrode 22 disposed on one surface of the sheet-like transparent piezoelectric layer; (3) a second transparent flat plate electrode 23 disposed on the other surface of the sheet-like transparent piezoelectric layer; Have.
- symbol in one embodiment (touch panel 100) of the touch panel of this invention is the same as the member in the touch panel 100, The description is abbreviate
- the adhesive portions 5a can exist in any size, number and shape on the surface of the frame 24a.
- the thickness of the adhesive portion 5a is preferably 200 ⁇ m or less (eg, 2 to 200 ⁇ m). If this thickness is too large, the transparency may decrease.
- the transparent piezoelectric sheet with frame 200a can be attached to the surface of an article such as a touch position detecting touch panel and a display device by the adhesive portion 5a, and a touch pressure detecting function can be imparted to the article.
- the adhesive portion 5a may be provided on the entire surface of the frame 24a or on a part as shown in FIG.
- the transparent piezoelectric sheet with frame 200a is preferably used in combination with a touch position detecting touch panel.
- the touch position detection touch panel is preferably a resistive film type or a capacitance type.
- a touch position detecting touch panel or a display device to which the transparent piezoelectric sheet of the present invention or the transparent piezoelectric sheet with a frame of the present invention is attached is also an embodiment of the present invention.
- the touch position detecting touch panel to which the transparent piezoelectric sheet of the present invention or the transparent piezoelectric sheet with a frame of the present invention is attached is an embodiment of the touch panel of the present invention. These are provided with a function of detecting a touch pressure.
- Membranes having a film thickness of 20 ⁇ m (Example 1) and 50 ⁇ m (Example 2) were obtained by casting a methyl ethyl ketone solution of vinylidene fluoride-tetrafluoroethylene copolymer (molar ratio 80:20) onto a PET substrate. The solvent was vaporized at 150 ° C. to mold. Films having a thickness of 80 ⁇ m (Example 3) and 100 ⁇ m (Example 4) were prepared by using a pellet-like melt composed of a vinylidene fluoride-tetrafluoroethylene copolymer (molar ratio 80:20) and a T-die. It shape
- Membranes having a film thickness of 30 ⁇ m (Comparative Example 1) and 50 ⁇ m (Comparative Example 2) were obtained by casting a methyl ethyl ketone solution of vinylidene fluoride-trifluoride ethylene copolymer (molar ratio 75:25) onto a PET substrate. The solvent was vaporized at 150 ° C. to mold. Films with a film thickness of 80 ⁇ m (Comparative Example 3) and 100 ⁇ m (Comparative Example 4) were prepared by using a pellet-like melt made of vinylidene fluoride-ethylene trifluoride copolymer (molar ratio 75:25) as a T-die. It shape
- the total light transmittance of the vinylidene fluoride-tetrafluoroethylene copolymer film having a thickness of 100 ⁇ m was 95%, and the HAZE value was 7.
- This film was sandwiched between two glass plates, heat-treated at 150 ° C. for 10 minutes, and then rapidly cooled to room temperature.
- the film thickness after the treatment was 100 ⁇ m, the total light transmittance was 94%, and the HAZE value was 8.
- the total light transmittance and HAZE value of the vinylidene fluoride-ethylene trifluoride copolymer film (molar ratio 75:25) are 94% and 14, when the film thickness is 30 ⁇ m (Comparative Example 1), and the film thickness is 50 ⁇ m (comparison).
- Example 2 95% and 18 and in the case of a film thickness of 80 ⁇ m (Comparative Example 3), they were 95% and 27, respectively.
- This film was sandwiched between two glass plates, heat-treated at 150 ° C. for 10 minutes, and then rapidly cooled to room temperature. The film thickness after the treatment was 100 ⁇ m, the total light transmittance was 93%, and the HAZE value was 88.
- Table 1 The results are shown in Table 1.
- the vinylidene fluoride-tetrafluoroethylene copolymer film and the vinylidene fluoride-trifluoride ethylene copolymer film are both light transmissive within the range of the film thickness tested. Is high and has the same light transmittance, However, with regard to turbidity (transparency), the vinylidene fluoride-trifluoride ethylene copolymer film decreases in transparency as the film thickness increases, whereas the vinylidene fluoride-tetrafluoroethylene copolymer weight decreases. The combined film showed high transparency within the range of film thickness tested.
- the change in the HAZE value when the vinylidene fluoride-tetrafluoroethylene copolymer film was rapidly cooled after the heat treatment was small.
- Example 2 Using the film of Example 2 shown in Table 1, ITO was formed on both sides of a transparent piezoelectric sheet having a thickness of 50 ⁇ m by sputtering. The sheet resistance of the electrode is 10 ⁇ / Sq. Met.
- the transparent piezoelectric sheet was subjected to a poling process using a ferroelectric test system RT6000HVS manufactured by Radiant Technology. Polling in which the above electrode is formed between a resistive touch panel layer (thickness 1 mm) and a liquid crystal panel layer constituting a liquid crystal display part of a pocket gear MC / PG5000 (trade name) manufactured by NEC Corporation A touch panel was formed by sandwiching the processed transparent piezoelectric sheet.
- Example 3 Using the polled film of Example 2 in Table 1, both sides of a transparent piezoelectric sheet having a thickness of 50 ⁇ m were sandwiched between ITO-deposited PET films. The transparent piezoelectric sheet was laminated on the resistive touch panel of the liquid crystal display part of Zaurus SL-C760 (trade name) manufactured by Sharp Corporation to form a touch panel. As a result of applying pressure with the touch pen, the magnitude of the voltage signal to be output changed depending on the pressing pressure, and the same result as in Test Example 2 could be obtained.
- Test Example 5 Vacuum heating deposition (HUS-5, manufactured by Hitachi, Ltd.) was performed on both surfaces of the poling treatment of the 25 ⁇ m-thick vinylidene fluoride-tetrafluoroethylene copolymer film (molar ratio 80:20) obtained in Test Example 4. ) To deposit an aluminum electrode (hereinafter referred to as a double-sided vapor-deposited film). Next, the double-sided vapor-deposited film was cut into a circle having a diameter of 11 mm using a punching punch.
- the electromechanical coupling coefficient kt was calculated by the method. The calculation is based on K.K. Koga, H .; Ohashi, J. et al. Appl. Phys. 59, 2142 (1986)). As a result, the electromechanical coupling coefficient kt was 0.07.
Landscapes
- 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
Description
これまでに実用化されているタッチパネルでは、ユーザーが押した位置(本明細書中、タッチ位置と称する場合がある)を検出できるのみであり、ユーザーが押した強さ(すなわち、押圧の高さ(強さ)。本明細書中、タッチ圧と称する場合がある)を検出する事はできなかった。一方、タッチパネルを用いた表示および入力装置において、タッチパネルは表示装置の前面に設置するので、表示装置の表示の視認性を高めるため、タッチパネルの透明性が高いことが求められる。
押圧の強さを検出可能であり、かつ透明性を有する入力装置またはこれに類するものとして、例えば、特許文献1には、電子ペーパの部材として用いられる、圧電体と、前記圧電体の一方の側に設けられた第1の電極と、前記圧電体の他方の側に設けられた第2の電極とを有するタッチパネル部が開示されている。
また、特許文献2には、タッチスクリーンに結合し、前記タッチスクリーンの各接触に対する位置座標の組を決定する第1センサシステムと、前記タッチスクリーンに結合し、第1タイプの物体により、前記タッチスクリーンの各接触を確認し、第2タイプの物体により、前記タッチスクリーンの各接触を無効にする、前記位置座標の組を決定する能力はない第2センサシステムとを含んでいるタッチスクリーンシステムが開示され、かつ第1センサシステムとして具体的には、LCDの視覚領域の外側に配置された力センサが開示されている。
また、特許文献3には、対向する一対の透明基板間に、圧電性を有する透明感圧層と、
当該透明感圧層を介して対向配置される一対の透明導電膜層とが形成されていることを特徴とする透明圧電センサが開示されている。 In recent years, a display and input device in which a touch panel, which is an input device, is installed on the front surface of a display device such as a liquid crystal display has been put into practical use and is used for an operation panel of a portable device such as a mobile phone and a home appliance. A display and input device using a touch panel enables a user to operate the device intuitively by pressing a display on the screen.
The touch panel that has been put to practical use so far can only detect the position pressed by the user (sometimes referred to as a touch position in the present specification), and the strength pressed by the user (that is, the height of the press). (Strength), which may be referred to as touch pressure in this specification) could not be detected. On the other hand, in a display and input device using a touch panel, the touch panel is installed on the front surface of the display device. Therefore, in order to improve the visibility of display on the display device, the touch panel needs to have high transparency.
As an input device that can detect the strength of pressing and has transparency, or the like, for example, Patent Document 1 discloses a piezoelectric body used as a member of electronic paper and one of the piezoelectric bodies. A touch panel unit having a first electrode provided on the side and a second electrode provided on the other side of the piezoelectric body is disclosed.
Patent Document 3 discloses a transparent pressure-sensitive layer having piezoelectricity between a pair of opposed transparent substrates,
A transparent piezoelectric sensor is disclosed, in which a pair of transparent conductive film layers disposed opposite to each other via the transparent pressure sensitive layer is formed.
また、上記特許文献1で開示されているタッチパネルは、既存の、ユーザーが押した位置のみを検出するタッチパネルの製造装置をそのまま転用することが難しいという、問題がある。もし、タッチ位置とともに、タッチ圧の検出が可能なタッチパネルの製造に、既存のタッチ位置検出用のタッチパネルの製造装置をそのまま利用すること、または既存のタッチ位置検出用のタッチパネル自体をそのまま利用することが可能であれば、簡便であり、ひいては、製造コストの削減が可能になる。
特許文献2に記載のタッチスクリーンは、偽接触を判別できるので、押圧の強さを検出する概念を提案しているとも言えるが、実際に具体的に開示されているのは、前述の通り、LCDの視覚領域の外側の力センサによって基板のたわみを検出するものであり、その精度は十分ではなく、また例えば、線形的検出が困難である、と考えられる。
特許文献3に記載の透明圧センサもまた、押圧の有無を検出しうることは示されているが、押圧の強弱を検出できることは示されていない。
上述の背景に鑑み、本発明は、タッチ位置とともに、高い精度でタッチ圧(押圧の高さ(強さ))の検出が可能なタッチパネルであって、
(1)透明性が高く、(2)種々の位置検出方式を採用することができ、かつ(3)その製造において、既存のタッチ位置検出用のタッチパネルの製造装置をそのまま利用すること、または既存のタッチ位置検出用のタッチパネル自体をそのまま利用することが可能であるタッチパネル等を提供する事を目的とする。 Although the touch panel unit described in Patent Document 1 can obtain a voltage pulse corresponding to the pressure, the touch panel unit does not have transparency as an essential requirement, and the transparency is considered insufficient. Further, the touch panel disclosed in Patent Document 1 is a resistive film type, but (a) a capacitance type that can easily detect multiple points, and (b) an ultrasonic type that is suitable for handwriting input and has high durability. And (c) Development of a touch panel capable of detecting the touch pressure as well as the touch position is required for other position detection touch panels having advantages such as optical type with high light transmittance and high durability. It has been.
Further, the touch panel disclosed in Patent Document 1 has a problem that it is difficult to divert the existing touch panel manufacturing apparatus that detects only the position pressed by the user. If a touch panel that can detect the touch pressure as well as the touch position is manufactured, the existing touch panel manufacturing device for touch position detection can be used as it is, or the existing touch position detection touch panel itself can be used as it is. If possible, it is simple, and consequently, the manufacturing cost can be reduced.
Since the touch screen described in
The transparent pressure sensor described in Patent Document 3 is also shown to be able to detect the presence or absence of pressing, but does not show that it can detect the strength of pressing.
In view of the above background, the present invention is a touch panel capable of detecting touch pressure (pressure height (strength)) with high accuracy together with a touch position,
(1) High transparency, (2) Various position detection methods can be adopted, and (3) In manufacturing, an existing touch panel manufacturing apparatus for touch position detection is used as it is, or existing An object of the present invention is to provide a touch panel or the like that can directly use the touch position detection touch panel itself.
第1発明の透明圧電シートは、
シート状透明圧電体層と、
当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と、
を含み、
前記第1透明平板電極は、第1透明平板電極部を有し、
前記第2透明平板電極は、第2透明平板電極部を有し、
前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する。
当該発明の透明圧電シートは、タッチ圧の検出に用いることができる。言い換えれば、タッチ圧検出用透明圧電シートとすることができる。ここで、シート状透明圧電体層の面上に配置された平板電極の上方からのタッチ圧が、直接的にシート状透明圧電体層に伝わるので、高い精度でのタッチ圧の検出が可能である。さらに、前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含することにより、製造時の第1透明平板電極部と第2透明平板電極部との平面視におけるズレの許容範囲が大きくなり、製造時の不良品率を下げることができる。また、当該構成により、第1透明平板電極部と第2透明平板電極部のうち面積が狭いほうの輪郭の範囲内の全領域での確実なタッチ圧の検出が可能となり、ひいては所望する(設計した)広い領域での確実なタッチ圧の検出が可能になる。これにより、当該発明の透明圧電シートをタッチ位置検出用タッチパネルと組み合わせて使用する場合に、タッチ圧とタッチ位置の双方を検出できる領域と、前記タッチ位置検出用タッチパネルのタッチ位置検出領域とを、高度に一致させることが可能となる(すなわち、前記タッチ位置検出用タッチパネルのタッチ位置検出領域を有効に利用できる)ので、本発明の透明圧電シートは、タッチ位置検出用のタッチパネルと組み合わせて好適に用いることができる。これにより、(1)透明性が高く、(2)種々の位置検出方式を採用することができ、かつ(3)その製造において、既存のタッチ位置検出用のタッチパネルの製造装置をそのまま利用すること、または既存のタッチ位置検出用のタッチパネル自体をそのまま利用することが可能であるタッチパネルが提供される。 The above-described problems are solved by the invention described below.
The transparent piezoelectric sheet of the first invention is
A sheet-like transparent piezoelectric layer;
A first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
A second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer;
Including
The first transparent flat plate electrode has a first transparent flat plate electrode portion,
The second transparent flat plate electrode has a second transparent flat plate electrode portion,
The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Includes the outline of the part.
The transparent piezoelectric sheet of the present invention can be used for detection of touch pressure. In other words, a transparent piezoelectric sheet for touch pressure detection can be obtained. Here, the touch pressure from the upper side of the plate electrode disposed on the surface of the sheet-like transparent piezoelectric layer is directly transmitted to the sheet-like transparent piezoelectric layer, so that the touch pressure can be detected with high accuracy. is there. Further, the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent in a plan view. By including the outline of the flat plate electrode part, the allowable range of deviation in plan view between the first transparent flat plate electrode part and the second transparent flat plate electrode part at the time of manufacturing is increased, and the defective product rate at the time of manufacturing is reduced. it can. In addition, with this configuration, it is possible to reliably detect the touch pressure in the entire region within the contour of the narrower area of the first transparent flat plate electrode portion and the second transparent flat plate electrode portion, and as a result (design) It is possible to reliably detect the touch pressure in a wide area. Thereby, when using the transparent piezoelectric sheet of the present invention in combination with a touch position detection touch panel, an area where both the touch pressure and the touch position can be detected, and the touch position detection area of the touch position detection touch panel, Since it becomes possible to make it highly coincident (that is, the touch position detection area of the touch position detection touch panel can be used effectively), the transparent piezoelectric sheet of the present invention is preferably combined with the touch position detection touch panel. Can be used. As a result, (1) high transparency, (2) various position detection methods can be employed, and (3) an existing touch panel manufacturing apparatus for touch position detection can be used as it is. Alternatively, there is provided a touch panel that can use an existing touch position detection touch panel itself as it is.
前記シート状透明圧電体層の厚さが1~200μmである。
当該発明の透明圧電シートは、前記シート状透明圧電体層の厚さが1~200μmであることにより、タッチ位置検出用タッチパネルのタッチ位置の検出の感度および精度を損なうことなく、高感度および高精度にタッチ圧を検出する機能を付与することができる。この厚さは、透明性の観点から好ましくは50μm以下であり、この厚さは、タッチ圧の検出感度の観点から好ましくは、20μm~100μmである。 The transparent piezoelectric sheet of the second invention is the transparent piezoelectric sheet of the first invention,
The sheet-like transparent piezoelectric layer has a thickness of 1 to 200 μm.
The transparent piezoelectric sheet according to the present invention has a high sensitivity and a high sensitivity without impairing the sensitivity and accuracy of touch position detection of the touch position detecting touch panel, because the thickness of the sheet-like transparent piezoelectric layer is 1 to 200 μm. A function of detecting the touch pressure with accuracy can be provided. This thickness is preferably 50 μm or less from the viewpoint of transparency, and this thickness is preferably 20 μm to 100 μm from the viewpoint of touch pressure detection sensitivity.
前記シート状透明圧電体層が有機重合体を含有する。
当該発明の透明圧電シートは、前記シート状透明圧電体層が有機重合体を含有することにより、大面積のシート状透明圧電体層を用意して製造することできるので、製造コストを下げることができる。 A transparent piezoelectric sheet according to a third invention is the transparent piezoelectric sheet according to the first invention or the second invention,
The sheet-like transparent piezoelectric layer contains an organic polymer.
The transparent piezoelectric sheet according to the present invention can be manufactured by preparing a sheet-like transparent piezoelectric layer having a large area by containing the organic polymer in the sheet-like transparent piezoelectric layer, so that the manufacturing cost can be reduced. it can.
前記有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である。
当該発明の透明圧電シートは、前記シート状透明圧電体層がフッ化ビニリデン-四フッ化エチレン共重合体を含有することにより、特に高い透明性を有する。 The transparent piezoelectric sheet of the fourth invention is the transparent piezoelectric sheet of the third invention,
The organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
The transparent piezoelectric sheet of the invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
前記第1透明平板電極は、第1リード部を更に有し、かつ
前記第2透明平板電極は、第2リード部を更に有する。
第1リード部および第2リード部はそれぞれ、前記第1透明平板電極および前記第2透明平板電極を外部の配線に接続するための部分である。当該発明の透明圧電シートは、前記第1透明平板電極が、第1リード部を更に有し、かつ前記第2透明平板電極が、第2リード部を更に有することにより、外部の配線に容易に接続できる。 The transparent piezoelectric sheet of the fifth invention is the transparent piezoelectric sheet of any of the first to fourth inventions,
The first transparent flat plate electrode further includes a first lead portion, and the second transparent flat plate electrode further includes a second lead portion.
The first lead portion and the second lead portion are portions for connecting the first transparent flat plate electrode and the second transparent flat plate electrode to an external wiring, respectively. In the transparent piezoelectric sheet of the present invention, the first transparent flat plate electrode further includes a first lead portion, and the second transparent flat plate electrode further includes a second lead portion, so that it can be easily connected to an external wiring. Can connect.
更に粘着部を含む。
当該発明の透明圧電シートは、粘着部を有することにより、タッチ位置検出用タッチパネル等の任意の物体に貼付して用いることができ、その表面にタッチ圧を検出する機能を付与することができる。 The transparent piezoelectric sheet of the sixth invention is the transparent piezoelectric sheet of any of the first to fifth inventions,
Furthermore, an adhesive part is included.
Since the transparent piezoelectric sheet of the present invention has an adhesive portion, it can be used by being affixed to an arbitrary object such as a touch position detecting touch panel, and a function of detecting a touch pressure can be imparted to the surface thereof.
タッチ位置検出用タッチパネルと組み合わせて用いられる。
当該発明の透明圧電シートは、タッチ位置検出用タッチパネルと組み合わせて用いられることにより、タッチ位置検出用タッチパネルに、タッチ圧を検出する機能を付与することができる。 A transparent piezoelectric sheet according to a seventh aspect is the transparent piezoelectric sheet according to any one of the first to sixth aspects,
Used in combination with a touch position detection touch panel.
The transparent piezoelectric sheet of the present invention can be used in combination with a touch position detection touch panel, thereby providing a touch position detection touch panel with a function of detecting a touch pressure.
前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である。
当該発明の透明圧電シートは、製造コストが低いという抵抗膜式タッチ位置検出用タッチパネルの有利な特性または多点検知が容易であるという静電容量式のタッチ位置検出用タッチパネルの有利な特性を損なうことなく、これらにタッチ圧を検出する機能を付与することができる。 The transparent piezoelectric sheet of the eighth invention is the transparent piezoelectric sheet of the seventh invention,
The touch position detecting touch panel is a resistance film type or a capacitance type.
The transparent piezoelectric sheet of the present invention impairs the advantageous characteristic of the resistive touch panel for detecting touch position that the manufacturing cost is low or the advantageous characteristic of the capacitive touch panel for detecting touch position that multipoint detection is easy. Without this, the function of detecting the touch pressure can be given to them.
第1発明~第8発明のいずれかの透明圧電シートがフレームに収容され、
前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していない、フレーム付透明圧電シートである。
当該発明のフレーム付透明圧電シートは、フレームを有することで取り扱いが容易であり、かつ前記第1透明平板電極と前記第2透明平板電極の平面視における重複部が、平面視において、前記フレームに重複していないことにより、タッチ圧を正確に検出することができる。 The transparent piezoelectric sheet with a frame of the ninth invention is
The transparent piezoelectric sheet according to any one of the first to eighth inventions is accommodated in a frame,
The overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is a transparent piezoelectric sheet with a frame that does not overlap with the frame in plan view.
The transparent piezoelectric sheet with a frame according to the present invention has a frame and is easy to handle, and an overlapping portion in a plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is formed in the frame in a plan view. By not overlapping, the touch pressure can be accurately detected.
シート状透明圧電体層と、
当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と、
粘着部と
を含む透明圧電シートである。
当該発明のタッチパネルは、タッチ位置検出用タッチパネルと、透明圧電シートとを有するので、タッチ位置検出用タッチパネルによって、タッチ位置が検出できるとともに、前記透明圧電シートによって、タッチ圧が検出できる。さらに、当該発明の透明圧電シートは、粘着部を有することにより、タッチ位置検出用タッチパネル等の任意の物体に貼付して用いることができ、その表面にタッチ圧を検出する機能を付与することができる。 The transparent piezoelectric sheet of the tenth invention is
A sheet-like transparent piezoelectric layer;
A first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
A second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer;
A transparent piezoelectric sheet including an adhesive portion.
Since the touch panel of the present invention includes the touch position detection touch panel and the transparent piezoelectric sheet, the touch position can be detected by the touch position detection touch panel, and the touch pressure can be detected by the transparent piezoelectric sheet. Furthermore, the transparent piezoelectric sheet of the present invention can be used by being attached to an arbitrary object such as a touch position detecting touch panel by having an adhesive portion, and can impart a function of detecting a touch pressure to the surface thereof. it can.
タッチ位置検出用タッチパネルと組み合わせて用いられる。
当該発明の透明圧電シートは、タッチ位置検出用タッチパネルと組み合わせて用いられることにより、タッチ位置検出用タッチパネルに、タッチ圧を検出する機能を付与することができる。 The transparent piezoelectric sheet of the eleventh invention is the transparent piezoelectric sheet of the tenth invention,
Used in combination with a touch position detection touch panel.
The transparent piezoelectric sheet of the present invention can be used in combination with a touch position detection touch panel, thereby providing a touch position detection touch panel with a function of detecting a touch pressure.
前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である。
当該発明の透明圧電シートは、製造コストが低いという抵抗膜式タッチ位置検出用タッチパネルの有利な特性または多点検知が容易であるという静電容量式のタッチ位置検出用タッチパネルの有利な特性を損なうことなく、これらにタッチ圧を検出する機能を付与することができる。 A transparent piezoelectric sheet according to a twelfth invention is the transparent piezoelectric sheet according to the eleventh invention,
The touch position detecting touch panel is a resistance film type or a capacitance type.
The transparent piezoelectric sheet of the present invention impairs the advantageous characteristic of the resistive touch panel for detecting touch position that the manufacturing cost is low or the advantageous characteristic of the capacitive touch panel for detecting touch position that multipoint detection is easy. Without this, the function of detecting the touch pressure can be given to them.
前記シート状透明圧電体層の厚さが1~200μmである。
当該発明の透明圧電シートは、前記シート状透明圧電体層の厚さが1~200μmであることにより、タッチ位置検出用タッチパネルのタッチ位置の検出の感度および精度を損なうことなく、高感度および高精度にタッチ圧を検出する機能を付与することができる。この厚さは、透明性の観点から好ましくは50μm以下であり、この厚さは、タッチ圧の検出感度の観点から好ましくは、20μm~100μmである。 A transparent piezoelectric sheet according to a thirteenth aspect of the present invention is the transparent piezoelectric sheet according to any one of the tenth to twelfth aspects of the present invention,
The sheet-like transparent piezoelectric layer has a thickness of 1 to 200 μm.
The transparent piezoelectric sheet according to the present invention has a high sensitivity and a high sensitivity without impairing the sensitivity and accuracy of touch position detection of the touch position detecting touch panel, because the thickness of the sheet-like transparent piezoelectric layer is 1 to 200 μm. A function of detecting the touch pressure with accuracy can be provided. This thickness is preferably 50 μm or less from the viewpoint of transparency, and this thickness is preferably 20 μm to 100 μm from the viewpoint of touch pressure detection sensitivity.
前記シート状透明圧電体層が有機重合体を含有する。
当該発明の透明圧電シートは、前記シート状透明圧電体層が有機重合体を含有することにより、大面積のシート状透明圧電体層を用意して製造することできるので、製造コストを下げることができる。 A transparent piezoelectric sheet according to a fourteenth aspect of the present invention is the transparent piezoelectric sheet according to any one of the tenth aspect to the thirteenth aspect of the present invention,
The sheet-like transparent piezoelectric layer contains an organic polymer.
The transparent piezoelectric sheet according to the present invention can be manufactured by preparing a sheet-like transparent piezoelectric layer having a large area by containing the organic polymer in the sheet-like transparent piezoelectric layer, so that the manufacturing cost can be reduced. it can.
有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である。
当該発明の透明圧電シートは、前記シート状透明圧電体層がフッ化ビニリデン-四フッ化エチレン共重合体を含有することにより、特に高い透明性を有する。 A transparent piezoelectric sheet according to a fifteenth invention is the transparent piezoelectric sheet according to the fifteenth invention,
The organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
The transparent piezoelectric sheet of the invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
前記第1透明平板電極は、第1透明平板電極部を有し、
前記第2透明平板電極は、第2透明平板電極部を有し、
前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する。
当該発明の透明圧電シートは、前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含することにより、製造時の第1透明平板電極部と第2透明平板電極部との平面視におけるズレの許容範囲が大きくなり、製造時の不良品率を下げることができる。 The transparent piezoelectric sheet of the sixteenth aspect of the invention is the transparent piezoelectric sheet of any one of the tenth to fifteenth aspects of the invention,
The first transparent flat plate electrode has a first transparent flat plate electrode portion,
The second transparent flat plate electrode has a second transparent flat plate electrode portion,
The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Includes the outline of the part.
In the transparent piezoelectric sheet of the present invention, the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in plan view, or the outline of the second transparent flat plate electrode part is flat. By including the outline of the first transparent flat plate electrode portion in view, the allowable range of deviation in plan view between the first transparent flat plate electrode portion and the second transparent flat plate electrode portion at the time of manufacture becomes large, and there is no problem at the time of manufacture. The yield rate can be lowered.
第10発明~第16発明のいずれかの透明圧電シートがフレームに収容され、
前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していないフレーム付透明圧電シートである。
当該発明のフレーム付透明圧電シートは、フレームを有することで取り扱いが容易であり、かつ前記第1透明平板電極と前記第2透明平板電極の平面視における重複部が、平面視において、前記フレームに重複していないことにより、タッチ圧を正確に検出することができる。 The transparent piezoelectric sheet with a frame of the seventeenth invention is
The transparent piezoelectric sheet of any one of the tenth to sixteenth inventions is housed in a frame,
The overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is a transparent piezoelectric sheet with a frame that does not overlap the frame in plan view.
The transparent piezoelectric sheet with a frame according to the present invention has a frame and is easy to handle, and an overlapping portion in a plan view of the first transparent flat plate electrode and the second transparent flat plate electrode is formed in the frame in a plan view. By not overlapping, the touch pressure can be accurately detected.
透明圧電シートと、
当該透明圧電シートを収容しているフレームと、
当該フレームの表面上に設けられた粘着部と
を含み、
前記透明圧電シートは、
(1)シート状透明圧電体層と、
(2)当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
(3)当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と、
有する、
フレーム付透明圧電シートである。
当該発明のフレーム付透明圧電シートは、タッチ圧の検出に用いることができる。特に、当該発明の透明圧電シートは、フレームを有することで取り扱いが容易であり、かつ粘着部を有することにより、タッチ位置検出用タッチパネル等の任意の物体に貼付して用いることができ、その表面にタッチ圧を検出する機能を付与することができる。 The transparent piezoelectric sheet with frame of the eighteenth invention is
A transparent piezoelectric sheet;
A frame containing the transparent piezoelectric sheet;
Including an adhesive portion provided on the surface of the frame,
The transparent piezoelectric sheet is
(1) a sheet-like transparent piezoelectric layer;
(2) a first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
(3) a second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer;
Have
It is a transparent piezoelectric sheet with a frame.
The frame-equipped transparent piezoelectric sheet of the present invention can be used for detection of touch pressure. In particular, the transparent piezoelectric sheet of the present invention is easy to handle by having a frame, and can be used by sticking to an arbitrary object such as a touch position detecting touch panel by having an adhesive portion. Can be provided with a function of detecting the touch pressure.
前記第1透明平板電極は、前記第1透明平板電極部を前記フレームの外部の配線と結ぶ第1リード部を更に有し、
前記第2透明平板電極は、前記第2透明平板電極部を前記フレームの外部の配線と結ぶ第2リード部を更に有する。
当該発明のフレーム付透明圧電シートは、前記第1透明平板電極は、前記第1透明平板電極部を前記フレームの外部の配線と結ぶ第1リード部を更に有し、かつ前記第2透明平板電極は、前記第2透明平板電極部を前記フレームの外部の配線と結ぶ第2リード部を更に有することによって、外部の配線に容易に接続できる。 The transparent piezoelectric sheet with frame of the nineteenth invention is the transparent piezoelectric sheet with frame of the seventeenth invention or the eighteenth invention,
The first transparent flat plate electrode further includes a first lead portion that connects the first transparent flat plate electrode portion to a wiring outside the frame,
The second transparent flat plate electrode further includes a second lead portion that connects the second transparent flat plate electrode portion to a wiring outside the frame.
In the transparent piezoelectric sheet with a frame according to the present invention, the first transparent flat plate electrode further includes a first lead portion connecting the first transparent flat plate electrode portion to an external wiring of the frame, and the second transparent flat plate electrode. Can be easily connected to external wiring by further including a second lead portion connecting the second transparent flat plate electrode portion to the external wiring of the frame.
タッチ位置検出用タッチパネルと組み合わせて用いられる。
当該発明のフレーム付透明圧電シートは、タッチ位置検出用タッチパネルと組み合わせて用いられることにより、タッチ位置検出用タッチパネルに、タッチ圧を検出する機能を付与することができる。 A transparent piezoelectric sheet with a frame according to a twentieth invention is the transparent piezoelectric sheet with a frame according to any of the seventeenth to nineteenth inventions,
Used in combination with a touch position detection touch panel.
The transparent piezoelectric sheet with a frame according to the present invention can be used in combination with a touch position detecting touch panel, thereby imparting a touch pressure detecting function to the touch position detecting touch panel.
前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である。
当該発明のフレーム付透明圧電シートは、製造コストが低いという抵抗膜式タッチ位置検出用タッチパネルの有利な特性または多点検知が容易であるという静電容量式のタッチ位置検出用タッチパネルの有利な特性を損なうことなく、これらにタッチ圧を検出する機能を付与することができる。 The transparent piezoelectric sheet with frame of the twenty-first invention is the transparent piezoelectric sheet with frame of the twentieth invention,
The touch position detecting touch panel is a resistance film type or a capacitance type.
The transparent piezoelectric sheet with a frame according to the present invention has an advantageous characteristic of a touch panel for detecting a touch position of a resistive film that manufacturing costs are low, or an advantageous characteristic of a touch panel for detecting a touch position of a capacitive type that multipoint detection is easy. The function of detecting the touch pressure can be given to these without impairing the above.
タッチ位置検出用タッチパネルと、
当該タッチ位置検出用タッチパネルの一方の面上に配置された第1発明~第8発明、および第10発明~第16発明のいずれかの透明圧電シート、または第9発明、および第17発明~第21発明のいずれかのフレーム付透明圧電シートと
を含むタッチパネルである。
当該発明のタッチパネルは、前記透明圧電シート、または前記フレーム付透明圧電シートを有するので、タッチ位置検出用タッチパネルによって、タッチ位置が検出できるとともに、前記透明圧電シート(または前記フレーム付透明圧電シート)によって、タッチ圧が検出できる。
前記タッチ位置検出用タッチパネルの形式は限定されないので、任意の位置検出方式のものを採用できる。
前記タッチ位置検出用タッチパネルとしては、既存のタッチ位置検出用のタッチパネルを用いることができるので、当該発明のタッチパネルの製造には、既に大量生産が行われているタッチ位置検出用タッチパネル自体、およびその製造装置を利用できる。 The touch panel of the 22nd invention is
A touch position detection touch panel;
The transparent piezoelectric sheet according to any one of the first to eighth inventions and the tenth to sixteenth inventions, or the ninth invention and the seventeenth to fifteenth inventions arranged on one surface of the touch position detecting touch panel. 21 is a touch panel including any one of the transparent piezoelectric sheets with frames according to the invention.
Since the touch panel of the present invention includes the transparent piezoelectric sheet or the transparent piezoelectric sheet with the frame, the touch position can be detected by the touch position detecting touch panel, and the transparent piezoelectric sheet (or the transparent piezoelectric sheet with the frame) is used. Touch pressure can be detected.
Since the form of the touch position detection touch panel is not limited, an arbitrary position detection method can be adopted.
As the touch position detection touch panel, an existing touch position detection touch panel can be used. Therefore, in the manufacture of the touch panel of the present invention, the touch position detection touch panel itself that has already been mass-produced, and its touch panel Manufacturing equipment is available.
前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である。
当該発明の透明圧電シートは、製造コストが低いという抵抗膜式タッチ位置検出用タッチパネルの有利な特性または多点検知が容易であるという静電容量式のタッチ位置検出用タッチパネルの有利な特性を損なうことなく有している。 A touch panel according to a twenty-third invention is the touch panel according to the twenty-second invention,
The touch position detecting touch panel is a resistance film type or a capacitance type.
The transparent piezoelectric sheet of the present invention impairs the advantageous characteristic of the resistive touch panel for detecting touch position that the manufacturing cost is low or the advantageous characteristic of the capacitive touch panel for detecting touch position that multipoint detection is easy. Without having.
さらに弾性体シートを含む。
当該発明のタッチパネルは、さらに弾性体シートを含むことにより、より高感度でタッチ圧を検出できる。 The touch panel of the 24th invention is the touch panel according to the 22nd invention or the 23rd invention,
Further, an elastic sheet is included.
The touch panel of the present invention can detect touch pressure with higher sensitivity by further including an elastic sheet.
第6発明もしくは第10発明に記載の透明圧電シートまたは第18発明に記載のフレーム付透明圧電シートが、前記粘着部によって貼付されている、タッチ位置検出用タッチパネルである。
当該タッチ位置検出用タッチパネルは、前記透明圧電シートまたは前記フレーム付透明圧電シートが貼付されていることにより、タッチ圧を検出する機能を付与されている。 The touch position detecting touch panel according to the 25th aspect of the present invention is
A touch position detecting touch panel, wherein the transparent piezoelectric sheet according to the sixth or tenth invention or the transparent piezoelectric sheet with a frame according to the eighteenth invention is attached by the adhesive portion.
The touch position detecting touch panel is provided with a function of detecting a touch pressure by attaching the transparent piezoelectric sheet or the frame-attached transparent piezoelectric sheet.
第6発明もしくは第10発明に記載の透明圧電シートまたは第18発明に記載のフレーム付透明圧電シートが、前記粘着部によって貼付されている、ディスプレイ装置である。
当該ディスプレイ装置は、前記透明圧電シートまたは前記フレーム付透明圧電シートが貼付されていることにより、タッチ圧を検出する機能が付与されている。 The display device of the twenty-sixth aspect of the invention is
A transparent piezoelectric sheet according to the sixth or tenth invention or a transparent piezoelectric sheet with a frame according to the eighteenth invention is a display device to which the adhesive portion is attached.
The display device has a function of detecting a touch pressure by attaching the transparent piezoelectric sheet or the transparent piezoelectric sheet with a frame.
タッチ位置検出用タッチパネルと、
当該タッチ位置検出用タッチパネルの一方の面上に配置された透明圧電シートと
を含み、
前記透明圧電シートは、
(1)シート状透明圧電体層と、
(2)当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
(3)当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と
を有するタッチパネルである。
当該発明のタッチパネルは、タッチ位置検出用タッチパネルと、透明圧電シートとを有するので、タッチ位置検出用タッチパネルによって、タッチ位置が検出できるとともに、前記透明圧電シートによって、タッチ圧が検出できる。
前記タッチ位置検出用タッチパネルの形式は限定されないので、任意の位置検出方式のものを採用できる。
前記タッチ位置検出用タッチパネルとしては、既存のタッチ位置検出用のタッチパネルを用いることができるので、当該発明のタッチパネルの製造には、既に大量生産が行われているタッチ位置検出用タッチパネル自体、およびその製造装置を利用できる。 The touch panel of the 27th invention is
A touch position detection touch panel;
A transparent piezoelectric sheet disposed on one surface of the touch position detection touch panel,
The transparent piezoelectric sheet is
(1) a sheet-like transparent piezoelectric layer;
(2) a first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
(3) A touch panel having a second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer.
Since the touch panel of the present invention includes the touch position detection touch panel and the transparent piezoelectric sheet, the touch position can be detected by the touch position detection touch panel, and the touch pressure can be detected by the transparent piezoelectric sheet.
Since the form of the touch position detection touch panel is not limited, an arbitrary position detection method can be adopted.
As the touch position detection touch panel, an existing touch position detection touch panel can be used. Therefore, in the manufacture of the touch panel of the present invention, the touch position detection touch panel itself that has already been mass-produced, and its touch panel Manufacturing equipment is available.
前記シート状透明圧電体層の厚さが1~200μmである。
当該発明のタッチパネルは、この厚さが1~200μmであることにより、高感度および高精度で、タッチ位置を検出すること、およびタッチ圧を検出することができる。この厚さは、透明性の観点から好ましくは50μm以下であり、この厚さは、タッチ圧の検出感度の観点から好ましくは、20μm~100μmである。 A touch panel according to a twenty-eighth aspect is the touch panel according to the twenty-seventh aspect,
The sheet-like transparent piezoelectric layer has a thickness of 1 to 200 μm.
Since the touch panel of the present invention has a thickness of 1 to 200 μm, it can detect the touch position and the touch pressure with high sensitivity and high accuracy. This thickness is preferably 50 μm or less from the viewpoint of transparency, and this thickness is preferably 20 μm to 100 μm from the viewpoint of touch pressure detection sensitivity.
前記シート状透明圧電体層が有機重合体を含有する。
当該発明のタッチパネルは、前記シート状透明圧電体層が有機重合体を含有することにより、大面積のシート状透明圧電体層を用意して製造することできるので、製造コストを下げることができる。 A touch panel according to a twenty-ninth invention is the touch panel according to the twenty-seventh invention or the twenty-eighth invention,
The sheet-like transparent piezoelectric layer contains an organic polymer.
Since the sheet-like transparent piezoelectric layer contains an organic polymer, the touch panel of the present invention can be prepared by preparing a large-area sheet-like transparent piezoelectric layer, and thus the manufacturing cost can be reduced.
前記有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である。
当該発明のタッチパネルは、前記シート状透明圧電体層がフッ化ビニリデン-四フッ化エチレン共重合体を含有することにより、当該発明のタッチパネルは、特に高い透明性を有する。 A touch panel according to a thirtieth invention is the touch panel according to the twenty-ninth invention,
The organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
In the touch panel of the present invention, the touch panel of the present invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
前記透明圧電シートはフレームに収容されており、
前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していない。
当該発明のタッチパネルは、前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していないことにより、タッチ圧を正確に検出することができる。 A touch panel according to a thirty-first invention is the touch panel according to any of the twenty-seventh to thirtieth inventions,
The transparent piezoelectric sheet is accommodated in a frame,
An overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap with the frame in plan view.
In the touch panel of the present invention, the overlapping portion in the plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap with the frame in the plan view, so that the touch pressure can be accurately detected. it can.
前記第1透明平板電極は、第1透明平板電極部と、前記第1透明平板電極部を前記フレームの外部の配線と結ぶ第1リード部とを有し、
前記第2透明平板電極は、第2透明平板電極部と、前記第2透明平板電極部を前記フレームの外部の配線と結ぶ第2リード部とを有し、
前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する。
当該発明のタッチパネルは、前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含することにより、製造時の第1透明平板電極部と第2透明平板電極部との平面視におけるズレの許容範囲が大きくなり、製造時の不良品率を下げることができる。 A touch panel according to a thirty-second invention is the touch panel according to the thirty-first invention,
The first transparent flat plate electrode includes a first transparent flat plate electrode portion and a first lead portion that connects the first transparent flat plate electrode portion to a wiring outside the frame,
The second transparent flat plate electrode has a second transparent flat plate electrode portion and a second lead portion that connects the second transparent flat plate electrode portion to a wiring outside the frame,
The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Includes the outline of the part.
In the touch panel of the present invention, the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is in a plan view. By including the outline of the first transparent flat plate electrode portion, an allowable range of deviation in plan view between the first transparent flat plate electrode portion and the second transparent flat plate electrode portion at the time of manufacture is increased, and the defective product rate at the time of manufacture is increased. Can be lowered.
第1透明平板電極および第2透明平板電極のうちのタッチ側の電極がグランド電極である。
当該発明のタッチパネルは、第1透明平板電極および第2透明平板電極のうちのタッチ側の電極がグランド電極であることにより、出力電圧のノイズを軽減することができる。 A touch panel according to a thirty-third invention is the touch panel according to any of the twenty-seventh to thirty-second inventions,
Of the first transparent flat plate electrode and the second transparent flat plate electrode, the touch side electrode is a ground electrode.
In the touch panel according to the present invention, the touch-side electrode of the first transparent flat plate electrode and the second transparent flat plate electrode is a ground electrode, so that noise of the output voltage can be reduced.
前記透明圧電シートが、前記タッチ位置検出用タッチパネルのタッチ側とは反対側の面に接して配置され、前記タッチ側の透明平板電極が、タッチ位置検出用タッチパネルのグランド電極を兼ねる。
当該発明のタッチパネルは、前記タッチ側の透明平板電極が、タッチ位置検出用タッチパネルのグランド電極を兼ねることにより、当該発明のタッチパネルの構造を簡略化し、これによって製造コストを下げることができる。 A touch panel according to a thirty-fourth aspect is the touch panel according to thirty-third aspect,
The transparent piezoelectric sheet is disposed in contact with a surface opposite to the touch side of the touch position detection touch panel, and the transparent flat electrode on the touch side also serves as a ground electrode of the touch position detection touch panel.
In the touch panel according to the present invention, the transparent flat plate electrode on the touch side also serves as the ground electrode of the touch position detecting touch panel, thereby simplifying the structure of the touch panel according to the present invention and thereby reducing the manufacturing cost.
タッチ位置検出用タッチパネルと、
当該タッチ位置検出用タッチパネルの一方の面上に配置された透明圧電シートと
を含み、
前記透明圧電シートは、
(1)下面に第1透明平板電極が形成されている第1透明シート部材と、
(2)シート状透明圧電体層と、
(3)上面に第2透明平板電極が形成されている第2透明シート部材と
を有し、
前記第1透明シート部材、前記シート状透明圧電体層、および前記第2透明シート部材は、この順に積層されている、タッチパネルである。
当該発明のタッチパネルは、第1発明のタッチパネルと、同じ効果を有する事に加えて、平板電極が形成されている透明シート部材として汎用の部材(例、ITO付きPETフィルム)を用いる事ができるので、製造が容易である。 The touch panel of the 35th invention is
A touch position detection touch panel;
A transparent piezoelectric sheet disposed on one surface of the touch position detection touch panel,
The transparent piezoelectric sheet is
(1) a first transparent sheet member in which a first transparent flat plate electrode is formed on the lower surface;
(2) a sheet-like transparent piezoelectric layer;
(3) a second transparent sheet member having a second transparent flat plate electrode formed on the upper surface;
The first transparent sheet member, the sheet-like transparent piezoelectric layer, and the second transparent sheet member are touch panels that are laminated in this order.
Since the touch panel of the present invention has the same effect as the touch panel of the first invention, a general-purpose member (eg, PET film with ITO) can be used as a transparent sheet member on which a flat plate electrode is formed. Easy to manufacture.
前記シート状透明圧電体層が有機重合体を含有する。
当該発明のタッチパネルは、前記シート状透明圧電体層が有機重合体を含有することにより、大面積のシート状透明圧電体層を用意して製造することできるので、製造コストを下げることができる。 A touch panel according to a thirty-sixth aspect is the touch panel according to any of the twenty-seventh to thirty-fifth aspects,
The sheet-like transparent piezoelectric layer contains an organic polymer.
Since the sheet-like transparent piezoelectric layer contains an organic polymer, the touch panel of the present invention can be prepared by preparing a large-area sheet-like transparent piezoelectric layer, and thus the manufacturing cost can be reduced.
有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である。
当該発明の透明圧電シートは、前記シート状透明圧電体層がフッ化ビニリデン-四フッ化エチレン共重合体を含有することにより、特に高い透明性を有する。 A touch panel according to a thirty-seventh aspect is the touch panel according to the thirty-sixth aspect,
The organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
The transparent piezoelectric sheet of the invention has particularly high transparency because the sheet-like transparent piezoelectric layer contains a vinylidene fluoride-tetrafluoroethylene copolymer.
さらに弾性体シートを含む。
当該発明のタッチパネルは、さらに弾性体シートを含むことにより、より高感度でタッチ圧を検出できる。 A touch panel according to a thirty-eighth aspect is the touch panel according to any one of the twenty-seventh to thirty-seventh aspects,
Further, an elastic sheet is included.
The touch panel of the present invention can detect touch pressure with higher sensitivity by further including an elastic sheet.
前記タッチ位置検出用タッチパネルの形式は限定されないので、任意の位置検出方式のものを採用できる。
前記タッチ位置検出用タッチパネルとしては、既存のタッチ位置検出用のタッチパネルを用いることができるので、本発明のタッチパネルの製造には、既に大量生産が行われているタッチ位置検出用タッチパネル自体、およびその製造装置を利用できる。
本発明の透明圧電シートは、タッチ圧の検出に用いることができる。特に、本発明の透明圧電シートは、前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する場合、タッチ位置検出用タッチパネルと組み合わせて使用する場合に、タッチ圧とタッチ位置の双方を検出できる領域と、前記タッチ位置検出用タッチパネルのタッチ位置検出領域とを、高度に一致させることが可能となるので、タッチ位置検出用のタッチパネルと組み合わせて好適に用いることができる。また、特に、本発明の透明圧電シートが粘着部を有する場合、これにより、タッチ位置検出用タッチパネル等の任意の物体に貼付して用いることができ、その表面にタッチ圧を検出する機能を付与することができる。 Since the touch panel of the present invention includes a touch position detection touch panel and a transparent piezoelectric sheet, the touch position can be detected with high accuracy by the touch position detection touch panel, and the touch pressure can be detected by the transparent piezoelectric sheet.
Since the form of the touch position detection touch panel is not limited, an arbitrary position detection method can be adopted.
As the touch position detection touch panel, an existing touch position detection touch panel can be used. Therefore, in manufacturing the touch panel of the present invention, the touch position detection touch panel itself already mass-produced, and its touch panel Manufacturing equipment is available.
The transparent piezoelectric sheet of the present invention can be used for detection of touch pressure. In particular, in the transparent piezoelectric sheet of the present invention, the outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in plan view, or the outline of the second transparent flat plate electrode part is A region where both the touch pressure and the touch position can be detected when used in combination with the touch position detection touch panel when including the outline of the first transparent flat plate electrode portion in plan view, and the touch position detection touch panel The touch position detection area can be matched to a high degree, and can be suitably used in combination with a touch position detection touch panel. In particular, when the transparent piezoelectric sheet of the present invention has an adhesive portion, it can be used by being affixed to an arbitrary object such as a touch position detecting touch panel, and a function for detecting the touch pressure is provided on the surface thereof. can do.
図1は、本発明のタッチパネルの一実施態様(タッチパネル100)を示す図である。
タッチパネル100は、タッチ位置検出用タッチパネル10を有する。
タッチ位置検出用タッチパネル10としては、特に限定されず、汎用のタッチ位置検出用タッチパネルを用いる事ができる。このようなタッチ位置検出用タッチパネル10の形式としては、例えば、抵抗膜式、静電容量式、超音波式、および光学式等が挙げられるが、これらに限定されるものではない。なかでも、(a)製造コストが低い抵抗膜式のタッチ位置検出用タッチパネルもしくは(b)多点検知が容易である静電容量式のタッチ位置検出用タッチパネルが好ましく、本発明のタッチパネルは、これらの方式のタッチ位置検出用タッチパネルが有する利点をそのまま保持することができる。
タッチ位置検出用タッチパネル10の厚さは、好ましくは、100μm~2mmである。タッチ位置検出用タッチパネル10の厚さが大きすぎると、本発明のタッチパネルの透明性が低くなる恐れがある。また、特に、タッチ位置検出用タッチパネル10が、透明圧電シート20に対して、タッチ側に配置される場合、タッチ位置検出用タッチパネル10の厚さが大きすぎると、透明圧電シート20によるタッチ圧検出の感度が低くなる恐れがある。
透明圧電シート20は、タッチ位置検出用タッチパネル10の一方の面上に配置されている。
透明圧電シート20は、タッチ位置検出用タッチパネル10に対して、タッチ側であってもよく、逆に、タッチ側の反対側であってもよい。本発明のタッチパネルを用いた表示及び入力装置においては、ディスプレイは、本発明のタッチパネルのタッチ側とは反対側に配置される。
透明圧電シート20は、
(1)シート状透明圧電体層21と、
(2)当該シート状透明圧電体層21の一方の面上に配置された第1透明平板電極22と、
(3)当該シート状透明圧電体層21の他方の面上に配置された第2透明平板電極23と
を有する。
シート状透明圧電体層21は、圧電性および透明性を有するものであれば、特に限定されないが、フッ化ビニリデン-四フッ化エチレン共重合体を含有する層、フッ化ビニリデン-三フッ化エチレン共重合体を含有する層、およびポリフッ化ビニリデンを含有する層が挙げられる。
なかでも好ましくは、フッ化ビニリデン-四フッ化エチレン共重合体からなる層である。
フッ化ビニリデン-四フッ化エチレン共重合体における、フッ化ビニリデン:四フッ化エチレン(モル比)は、タッチ圧の検出感度に関係する圧電性の観点から、50:50~90:10が好ましく、65:35~80:20がより好ましい。
フッ化ビニリデン-四フッ化エチレン共重合体を含有する層、フッ化ビニリデン-三フッ化エチレン共重合体を含有する層、およびポリフッ化ビニリデンを含有する層は、圧電性向上の観点から、延伸処理してもよい。ここで、延伸は、一軸方向の3~10倍延伸が好ましい。当該延伸処理は、慣用の方法によって行えばよい。
フッ化ビニリデン-四フッ化エチレン共重合体を含有する層、フッ化ビニリデン-三フッ化エチレン共重合体を含有する層、およびポリフッ化ビニリデンを含有する層に圧電性を付与するには、分極処理(ポーリング処理とも称される。)を行えばよい。当該分極処理は、コロナ放電処理、または慣用の方法によって行うことができる。例えば、フィルムの両面から金属電極等で挟み込み、30~400MV/mの直流電界、0.1秒~60分間、の印加を実施する。
シート状透明圧電体層21は、その圧電性および透明性を害さない範囲で、樹脂フィルムに添加される添加剤を含有してもよい。
シート状透明圧電体層21の厚さは、通常、1~200μmであり、透明性の観点から好ましくは、50μm以下であり、タッチ圧の検出感度の観点から好ましくは、20μm~100μmである。
シート状透明圧電体層21は、単一層であってもよく、複数の層からなってもよい。
透明圧電シート20は、好ましくは、取り扱いの容易さの観点から、フレーム24に収容される。図2に示すように、透明圧電シート20およびタッチ位置検出用パネル10を含むタッチパネル全体がフレーム24に収容されてもよい。 <Touch panel>
FIG. 1 is a diagram showing one embodiment (touch panel 100) of the touch panel of the present invention.
The
The touch position
The thickness of the touch position detecting
The transparent
The transparent
The transparent
(1) a sheet-like transparent
(2) a first transparent
(3) It has the 2nd transparent
The sheet-like transparent
Among these, a layer made of a vinylidene fluoride-tetrafluoroethylene copolymer is preferable.
The vinylidene fluoride: tetrafluoroethylene (molar ratio) in the vinylidene fluoride-tetrafluoroethylene copolymer is preferably 50:50 to 90:10 from the viewpoint of piezoelectricity related to the detection sensitivity of the touch pressure. 65:35 to 80:20 are more preferable.
The layer containing a vinylidene fluoride-tetrafluoroethylene copolymer, the layer containing a vinylidene fluoride-ethylene trifluoride copolymer, and the layer containing a polyvinylidene fluoride are stretched from the viewpoint of improving piezoelectricity. It may be processed. Here, the stretching is preferably 3 to 10 times in the uniaxial direction. The stretching process may be performed by a conventional method.
In order to impart piezoelectricity to a layer containing a vinylidene fluoride-tetrafluoroethylene copolymer, a layer containing a vinylidene fluoride-ethylene trifluoride copolymer, and a layer containing a polyvinylidene fluoride, Processing (also referred to as polling processing) may be performed. The polarization treatment can be performed by a corona discharge treatment or a conventional method. For example, the film is sandwiched from both sides with a metal electrode or the like, and a DC electric field of 30 to 400 MV / m is applied for 0.1 seconds to 60 minutes.
The sheet-like transparent
The thickness of the sheet-like transparent
The sheet-like transparent
The transparent
また、同様に、所望により、第2透明平板電極22のシート状透明圧電体層21とは反対側の面上には、第2透明シート部材33が配置されてもよい。 If desired, a first
Similarly, a second
第1透明平板電極22のシート状透明圧電体層21とは反対側の面上には、第1透明シート部材32が配置され、かつ、第2透明平板電極22のシート状透明圧電体層21とは反対側の面上には、第2透明シート部材33が配置されている場合、本発明のタッチパネル100aは、図2に示すように、
タッチ位置検出用タッチパネル100aと、
透明圧電シート20aと
を含み、
前記透明圧電シート20aは、
(1)下面に第1透明平板電極22が形成されている第1透明シート部材32と、
(2)シート状透明圧電体層21と、
(3)上面に第2透明平板電極23が形成されている第2透明シート部材33と
を有し、および
前記第1透明シート部材32、前記シート状透明圧電体層21、および前記第2透明シート部材33は、この順に積層されている。
第1透明シート部材32および第2透明シート部材33としては、例えば、ポリエチレンテレフタレートフィルムを用いることができるが、透明であり、第1透明平板電極22および第1透明平板電極23を形成できるものであれば、特に限定されない。
第1透明シート部材32および第2透明シート部材33の厚さは、好ましくは、1μm~200μmである。この厚さが大きすぎる場合、透明性の低下とタッチ圧の検出感度が低くなる恐れがある。 In the case of such an embodiment, for example, the first transparent
A first
A touch position detecting
A transparent
The transparent
(1) a first
(2) a sheet-like transparent
(3) a second
As the 1st
The thicknesses of the first
前記第1透明平板電極22は、第1透明平板電極部221と、前記第1透明平板電極部221を前記フレームの外部の配線と結ぶ第1リード部222を有し、
前記第2透明平板電極23は、第2透明平板電極部231と、前記第2透明平板電極部231を前記フレームの外部の配線と結ぶ第2リード部232を有する。
好ましくは、前記第1透明平板電極部231の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、図3に示すように、前記第2透明平板電極部231の輪郭が、平面視において前記第1透明平板電極部221の輪郭を包含する。
第1透明平板電極部221および第2透明平板電極部231は、それぞれシート状透明圧電体層21(図3に図示せず)の主面の全体を覆っていてもよく、その一部を覆っていてもよいが、この場合、一方の平板電極の平板電極部がシート状透明圧電体層21の主面の全体を覆う場合、必然的に、他方の平板電極の平板電極部は、シート状透明圧電体層21の主面の部分のみを覆うことになる。
なお、平面視において、第1透明平板電極部221の輪郭、および第2透明平板電極部231の輪郭は、それぞれシート状透明圧電体層21の主面の輪郭の外側に存在しない。 第1透明平板電極部221および第2透明平板電極部231が平面視で重複する部分が、押圧の位置を検出できる部分になるので、シート状透明圧電体層21の主面の面積に対する当該重複する部分の面積の比は、好ましくは70%以上、より好ましくは80%以上である。
また、シート状透明圧電体層21の主面の面積に対する、第1透明平板電極部221の面積および第2透明平板電極部231の面積は、それぞれ、好ましくは80%以上、より好ましくは90%以上である。
このような構造を採用することにより、製造時の第1透明平板電極部221と第2透明平板電極部231との平面視におけるズレの許容範囲が大きくなり、製造時の不良品率を下げることができる。
また、シート状透明圧電体層21の主面の面積に対する、第1透明平板電極部221および第2透明平板電極部231が、それぞれ平面視でシート状透明圧電体層21の主面と重複する部分の面積のうち小さいほうの面積の比は、好ましくは70%以上、より好ましくは80%以上である。
これにより、広い面積で、タッチ圧を検出することができる。
なお、第1透明平板電極部221と第1リード部222、および前記第2透明平板電極部231と第2リード部232は、図4に示すように、それぞれ一体的に形成されていてもよく、別々に形成されたものが連結されていてもよい。また、第1リード部222、および第2リード部232は、それぞれ、図4に示すように、前記シート状透明圧電体層21から突出していてもよい。 From the viewpoint of the accuracy of detection of the touch pressure, preferably, as shown in FIG. 3, the overlapping portion in the plan view of the first transparent
The first transparent
The second transparent
Preferably, the outline of the first transparent flat
Each of the first transparent flat
In plan view, the outline of the first transparent flat
The area of the first transparent flat
By adopting such a structure, an allowable range of deviation in plan view between the first transparent flat
Further, the first transparent flat
Thereby, a touch pressure can be detected in a wide area.
The first transparent flat
前記透明圧電シート20が、前記タッチ位置検出用タッチパネル10のタッチ側とは反対側の面に接して配置される場合、前記タッチ側の透明平板電極が、タッチ位置検出用タッチパネル10のグランド電極を兼ねることができる。(図示せず)
すなわち、この場合、タッチ位置検出用タッチパネル10は、それ自体が単独で、タッチ位置検出用パネルとして機能しないものである。
これにより、本発明のタッチパネルの構造を簡略化し、これによって製造コストを下げることができる。 Here, the touch position
When the transparent
In other words, in this case, the touch position
Thereby, the structure of the touch panel of this invention can be simplified and manufacturing cost can be lowered | hung by this.
弾性体シートは、好ましくは、圧電シートと液晶ディスプレイの間に配置される。
上記の効果を得る観点から好ましくは、弾性体シートの厚さは、10μm~2mmである。 The touch position detecting
The elastic sheet is preferably disposed between the piezoelectric sheet and the liquid crystal display.
From the viewpoint of obtaining the above effect, the thickness of the elastic sheet is preferably 10 μm to 2 mm.
図5は、本発明の透明圧電シートの一実施態様(透明圧電シート200)を示す図である。
透明圧電シート200は、
シート状透明圧電体層21と、
当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極22と、
当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極23と、
粘着部5と
を含む。
ここで、本発明のタッチパネルの一実施態様(タッチパネル100)における符号と同じ符号を有する部材は、タッチパネル100における部材と同様であり、その説明を省略する。
粘着部5は、シート状透明圧電体層21、第1透明平板電極22、および第2透明平板電極23の表面上に任意の大きさ、個数、形状で存在しうる。粘着部5の厚さは、好ましくは、200μm以下(例、2~200μm)である。この厚さが大きすぎる場合、透明性が低下する恐れがある。粘着部5は、好ましくは、透明である。
透明圧電シート200は、粘着部5により、タッチ位置検出用タッチパネルおよびディスプレイ装置等の物品の表面に貼付することができ、その物品にタッチ圧検出機能を付与することができる。
透明圧電シート200は、好ましくは、タッチ位置検出用タッチパネルと組み合わせて用いられる。当該タッチ位置検出用タッチパネルの形式は、好ましくは、抵抗膜式もしくは静電容量式である。 <Transparent Piezoelectric Sheet (Embodiment 1)>
FIG. 5 is a view showing an embodiment (transparent piezoelectric sheet 200) of the transparent piezoelectric sheet of the present invention.
The transparent
A sheet-like transparent
A first transparent
A second transparent
And the
Here, the member which has the same code | symbol as the code | symbol in one embodiment (touch panel 100) of the touch panel of this invention is the same as the member in the
The
The transparent
The transparent
また、前記したタッチパネル100に用いられる透明圧電シート20のうち、
シート状透明圧電体層と、
当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極22と、
当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極23と、
を含み、
前記第1透明平板電極22は、第1透明平板電極部221を有し、
前記第2透明平板電極23は、第2透明平板電極部231を有し、
前記第1透明平板電極部221の輪郭が、平面視において前記第2透明平板電極部231の輪郭を包含するか、または、前記第2透明平板電極部231の輪郭が、平面視において前記第1透明平板電極部221の輪郭を包含する
透明圧電シートもまた、本発明の一実施態様である。
ここで、本発明のタッチパネルの一実施態様(タッチパネル100)における符号と同じ符号を有する部材は、タッチパネル100における部材と同様であり、その説明を省略する。
当該態様の透明圧電シート20は、高い精度でのタッチ圧の検出が可能である。また、当該態様の透明圧電シート20の精度は、タッチパネルの構成部材の強度、および透明圧電シート20の影響を受けにくい。 <Transparent Piezoelectric Sheet (Embodiment 2)>
Of the transparent
A sheet-like transparent piezoelectric layer;
A first transparent
A second transparent
Including
The first
The second
The outline of the first transparent flat
Here, the member which has the same code | symbol as the code | symbol in one embodiment (touch panel 100) of the touch panel of this invention is the same as the member in the
The transparent
図6は、本発明のフレーム付透明圧電シートの一実施態様(フレーム付透明圧電シート200a)を示す図である。
フレーム付透明圧電シート200aは、
透明圧電シート2と、
当該透明圧電シートを収容しているフレーム24と、
当該フレーム24aの表面上に設けられた粘着部5aと
を含み、
前記透明圧電シート2は、
(1)シート状透明圧電体層21と、
(2)当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極22と、
(3)当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極23と、
有する。
ここで、本発明のタッチパネルの一実施態様(タッチパネル100)における符号と同じ符号を有する部材は、タッチパネル100における部材と同様であり、その説明を省略する。
粘着部5aは、フレーム24aの表面上に任意の大きさ、個数、形状で存在しうる。粘着部5aの厚さは、好ましくは、200μm以下(例、2~200μm)である。この厚さが大きすぎる場合、透明性が低下する恐れがある。
フレーム付透明圧電シート200aは、粘着部5aにより、タッチ位置検出用タッチパネルおよびディスプレイ装置等の物品の表面に貼付することができ、その物品にタッチ圧検出機能を付与することができる。
当該粘着部5aは、フレーム24aの全面、または図7に示すように、一部に設けられていればよい。
フレーム付透明圧電シート200aは、好ましくは、タッチ位置検出用タッチパネルと組み合わせて用いられる。当該タッチ位置検出用タッチパネルの形式は、好ましくは、抵抗膜式もしくは静電容量式である。 <Transparent piezoelectric sheet with frame>
FIG. 6 is a view showing an embodiment (transparent piezoelectric sheet with
The transparent piezoelectric sheet with
A transparent
A
An
The transparent
(1) a sheet-like transparent
(2) a first transparent
(3) a second transparent
Have.
Here, the member which has the same code | symbol as the code | symbol in one embodiment (touch panel 100) of the touch panel of this invention is the same as the member in the
The
The transparent piezoelectric sheet with
The
The transparent piezoelectric sheet with
本発明の透明圧電シートまたは本発明のフレーム付透明圧電シートが、貼付されている、タッチ位置検出用タッチパネルまたはディスプレイ装置もまた、本発明の一態様である。
また、本発明の透明圧電シートまたは本発明のフレーム付透明圧電シートが、貼付されている、タッチ位置検出用タッチパネルは、本発明のタッチパネルの一態様である。
これらには、タッチ圧を検出する機能が付与されている。 <Touch position detection touch panel and display device>
A touch position detecting touch panel or a display device to which the transparent piezoelectric sheet of the present invention or the transparent piezoelectric sheet with a frame of the present invention is attached is also an embodiment of the present invention.
The touch position detecting touch panel to which the transparent piezoelectric sheet of the present invention or the transparent piezoelectric sheet with a frame of the present invention is attached is an embodiment of the touch panel of the present invention.
These are provided with a function of detecting a touch pressure.
[製造例1~4](膜の製造)
下記の製造法により、シート状透明圧電体層として用いる、それぞれ膜厚20μm(実施例1)、50μm(実施例2)、80μm(実施例3)、および100μm(実施例4)の、フッ化ビニリデン-四フッ化エチレン共重合体膜(モル比 80:20)を製造した。
膜厚20μm(実施例1)、および50μm(実施例2)の膜は、フッ化ビニリデン-四フッ化エチレン共重合体(モル比 80:20)のメチルエチルケトン溶液をPET基材上に流延し、150℃で溶媒を気化させて成形した。
膜厚80μm(実施例3)、および100μm(実施例4)の膜は、フッ化ビニリデン-四フッ化エチレン共重合体(モル比 80:20)からなるペレット状溶融物を、T-ダイを設置したフィルム製造設備を用いて成形した。
[比較例1~4](膜の製造)
また、対照として、下記の製造法により、それぞれ膜厚30μm(比較例1)、50μm(比較例2)、80μm(比較例3)、および100μm(比較例4)の、フッ化ビニリデン-三フッ化エチレン共重合体膜(モル比 75:25)を製造した。
膜厚30μm(比較例1)、および50μm(比較例2)の膜は、フッ化ビニリデン-三フッ化エチレン共重合体(モル比 75:25)のメチルエチルケトン溶液をPET基材上に流延し、150℃で溶媒を気化させて成形した。
膜厚80μm(比較例3)、および100μm(比較例4)の膜は、フッ化ビニリデン-三フッ化エチレン共重合体(モル比 75:25)からなるペレット状溶融物を、T-ダイを設置したフィルム製造設備を用いて成形した。 Hereinafter, the present invention will be described in more detail by way of examples and test examples, but the present invention is not limited thereto.
[Production Examples 1 to 4] (Production of membrane)
Fluorination with a film thickness of 20 μm (Example 1), 50 μm (Example 2), 80 μm (Example 3), and 100 μm (Example 4), respectively, used as a sheet-like transparent piezoelectric layer by the following manufacturing method. A vinylidene-tetrafluoroethylene copolymer film (molar ratio 80:20) was produced.
Membranes having a film thickness of 20 μm (Example 1) and 50 μm (Example 2) were obtained by casting a methyl ethyl ketone solution of vinylidene fluoride-tetrafluoroethylene copolymer (molar ratio 80:20) onto a PET substrate. The solvent was vaporized at 150 ° C. to mold.
Films having a thickness of 80 μm (Example 3) and 100 μm (Example 4) were prepared by using a pellet-like melt composed of a vinylidene fluoride-tetrafluoroethylene copolymer (molar ratio 80:20) and a T-die. It shape | molded using the installed film manufacturing equipment.
[Comparative Examples 1 to 4] (Production of membrane)
In addition, as a control, vinylidene fluoride-trifluoride having a film thickness of 30 μm (Comparative Example 1), 50 μm (Comparative Example 2), 80 μm (Comparative Example 3), and 100 μm (Comparative Example 4), respectively, was prepared by the following production method. An ethylene copolymer film (molar ratio 75:25) was produced.
Membranes having a film thickness of 30 μm (Comparative Example 1) and 50 μm (Comparative Example 2) were obtained by casting a methyl ethyl ketone solution of vinylidene fluoride-trifluoride ethylene copolymer (molar ratio 75:25) onto a PET substrate. The solvent was vaporized at 150 ° C. to mold.
Films with a film thickness of 80 μm (Comparative Example 3) and 100 μm (Comparative Example 4) were prepared by using a pellet-like melt made of vinylidene fluoride-ethylene trifluoride copolymer (molar ratio 75:25) as a T-die. It shape | molded using the installed film manufacturing equipment.
(光透過性試験およびHAZE試験)
上記で製膜した膜を用い、下記の条件で、光透過性試験およびHAZE(濁度)試験を実施した。
光透過性試験:(株)東洋精機製作所製のヘイズガードIIを使用し、ASTM D1003に基づいて測定した。
HAZE試験:(株)東洋精機製作所製のヘイズガードIIを使用し、ASTM D1003に基づいて測定した。
膜厚20μm(実施例1)、50μm(実施例2)および80μm(実施例3)のフッ化ビニリデン-四フッ化エチレン共重合体膜の全光線透過率とHAZE値は、各々95%と5であった。
膜厚100μm(実施例4)のフッ化ビニリデン-四フッ化エチレン共重合体膜の全光線透過率は95%、HAZE値は7であった。このフィルムを2枚のガラス板に挟み、150℃で10分間熱処理した後、室温まで急冷させた。処理後のフィルムの膜厚は100μm、全光線透過率は94%、HAZE値は8であった。
フッ化ビニリデン-三フッ化エチレン共重合体膜(モル比 75:25)の全光線透過率とHAZE値は、膜厚30μm(比較例1)の場合、94%と14、膜厚50μm(比較例2)の場合、95%と18、および膜厚80μm(比較例3)の場合95%と27であった。
膜厚100μm(比較例4)のフッ化ビニリデン-三フッ化エチレン共重合体(モル比 75:25)の全光線透過率は93%、HAZE値は35であった。このフィルムを2枚のガラス板に挟み、150℃で10分間熱処理した後、室温まで急冷させた。処理後のフィルムの膜厚は100μm、全光線透過率は93%、HAZE値は88であった。
結果を表1に示す。これらからから明らかなように、フッ化ビニリデン-四フッ化エチレン共重合体膜とフッ化ビニリデン-三フッ化エチレン共重合体膜とは、試験した膜厚の範囲内で、どちらも光透過性が高く、同等の光透過性を有する、
しかし、濁度(透明性)については、フッ化ビニリデン-三フッ化エチレン共重合体膜は、膜厚が厚くなると、透明性が低下するのに対し、フッ化ビニリデン-四フッ化エチレン共重合体膜は、試験した膜厚の範囲内で、高い透明性を示した。また、フッ化ビニリデン-三フッ化エチレン共重合体膜に比べ、フッ化ビニリデン-四フッ化エチレン共重合体膜は、熱処理後に急冷した場合におけるHAZE値の変化が小さかった。 [Test Example 1]
(Light transmission test and HAZE test)
Using the film formed above, a light transmission test and a HAZE (turbidity) test were performed under the following conditions.
Light transmittance test: Measured based on ASTM D1003 using Hazeguard II manufactured by Toyo Seiki Seisakusho.
HAZE test: Measured based on ASTM D1003 using Hazeguard II manufactured by Toyo Seiki Seisakusho.
The total light transmittance and the HAZE value of vinylidene fluoride-tetrafluoroethylene copolymer films having film thicknesses of 20 μm (Example 1), 50 μm (Example 2) and 80 μm (Example 3) are 95% and 5 respectively. Met.
The total light transmittance of the vinylidene fluoride-tetrafluoroethylene copolymer film having a thickness of 100 μm (Example 4) was 95%, and the HAZE value was 7. This film was sandwiched between two glass plates, heat-treated at 150 ° C. for 10 minutes, and then rapidly cooled to room temperature. The film thickness after the treatment was 100 μm, the total light transmittance was 94%, and the HAZE value was 8.
The total light transmittance and HAZE value of the vinylidene fluoride-ethylene trifluoride copolymer film (molar ratio 75:25) are 94% and 14, when the film thickness is 30 μm (Comparative Example 1), and the film thickness is 50 μm (comparison). In the case of Example 2), 95% and 18 and in the case of a film thickness of 80 μm (Comparative Example 3), they were 95% and 27, respectively.
The total light transmittance of the vinylidene fluoride-trifluoride ethylene copolymer (molar ratio 75:25) having a film thickness of 100 μm (Comparative Example 4) was 93% and the HAZE value was 35. This film was sandwiched between two glass plates, heat-treated at 150 ° C. for 10 minutes, and then rapidly cooled to room temperature. The film thickness after the treatment was 100 μm, the total light transmittance was 93%, and the HAZE value was 88.
The results are shown in Table 1. As is clear from these, the vinylidene fluoride-tetrafluoroethylene copolymer film and the vinylidene fluoride-trifluoride ethylene copolymer film are both light transmissive within the range of the film thickness tested. Is high and has the same light transmittance,
However, with regard to turbidity (transparency), the vinylidene fluoride-trifluoride ethylene copolymer film decreases in transparency as the film thickness increases, whereas the vinylidene fluoride-tetrafluoroethylene copolymer weight decreases. The combined film showed high transparency within the range of film thickness tested. Further, compared with the vinylidene fluoride-trifluoride ethylene copolymer film, the change in the HAZE value when the vinylidene fluoride-tetrafluoroethylene copolymer film was rapidly cooled after the heat treatment was small.
表1に記載した実施例2の膜を用いて、膜厚50μmの透明圧電シートの両側にITOをスパッタ法で形成した。電極のシート抵抗は10Ω/Sq.であった。この透明圧電シートをラジエント・テクノロジ(株)製の強誘電体テストシステムRT6000HVSを用いてポーリング処理を行った。
日本電気(株)社製のポケットギアMC/PG5000(商品名)の液晶ディスプレイ部分を構成する抵抗膜式のタッチパネル層(厚さ1mm)と液晶パネル層の間に、上記の電極を形成したポーリング処理済みの透明圧電シートを挟んでタッチパネルを形成した。
タッチペンにより圧力をかけた結果、図8および図9の矢印1で示される電気信号を得ることができた(矢印2は測定に使用しなかったチャンネルの電気信号である)。
タッチペンで押す強さを変化させた結果、押圧が22kN/m2の時(図8)は0.20Vの電気信号を、また、押圧が12kN/m2(図9)の時は0.11Vの電圧信号を取り出すことができた。押す圧力が強いほど大きな電圧信号を取り出すことが出来た。電圧信号は10倍に増幅したものを日本データシステム製のポケットサイズUSBオシロスコープUDS-5202を用いて計測した。 [Test Example 2]
Using the film of Example 2 shown in Table 1, ITO was formed on both sides of a transparent piezoelectric sheet having a thickness of 50 μm by sputtering. The sheet resistance of the electrode is 10Ω / Sq. Met. The transparent piezoelectric sheet was subjected to a poling process using a ferroelectric test system RT6000HVS manufactured by Radiant Technology.
Polling in which the above electrode is formed between a resistive touch panel layer (thickness 1 mm) and a liquid crystal panel layer constituting a liquid crystal display part of a pocket gear MC / PG5000 (trade name) manufactured by NEC Corporation A touch panel was formed by sandwiching the processed transparent piezoelectric sheet.
As a result of applying pressure with the touch pen, an electrical signal indicated by an arrow 1 in FIGS. 8 and 9 was obtained (
Result of changing the intensity of pressing with the touch pen, when pressed in 22Kn / m 2 (Fig. 8) is an electric signal of 0.20 V, also when the pressing of 12 kN / m 2 (Fig. 9) is 0.11V The voltage signal could be extracted. The stronger the pressure, the greater the voltage signal that could be extracted. The voltage signal amplified 10 times was measured using a pocket size USB oscilloscope UDS-5202 made by Nippon Data System.
表1における実施例2のポーリング処理済の膜を用いて、膜厚50μmの透明圧電シートの両側をITO蒸着PETフィルムで挟んだ。
シャープ(株)社製のザウルス SL-C760(商品名)の液晶ディスプレイ部分の抵抗膜式のタッチパネル上に、上記の透明圧電シートを積層してタッチパネルを形成した。
タッチペンにより圧力をかけた結果、押す圧力によって出力する電圧信号の大きさが変化し試験例2と同様の結果を得ることができた。 [Test Example 3]
Using the polled film of Example 2 in Table 1, both sides of a transparent piezoelectric sheet having a thickness of 50 μm were sandwiched between ITO-deposited PET films.
The transparent piezoelectric sheet was laminated on the resistive touch panel of the liquid crystal display part of Zaurus SL-C760 (trade name) manufactured by Sharp Corporation to form a touch panel.
As a result of applying pressure with the touch pen, the magnitude of the voltage signal to be output changed depending on the pressing pressure, and the same result as in Test Example 2 could be obtained.
(圧電信号の検出)
(1)圧電体層の製造
下記の製造法により、圧電体層として用いる膜厚100μmのフッ化ビニリデン-四フッ化エチレン共重合体膜(モル比 80:20)を製造した。
膜厚100μmの膜は、フッ化ビニリデン-四フッ化エチレン共重合体(モル比 80:20)のメチルエチルケトン溶液をPET基材上に流延し、150℃で溶媒を気化させて成形した。このものを一軸延伸機により110℃で延伸した。得られたフィルムは約4.5倍延伸されており、厚さは約25μmであった。
(2)ポーリング処理
金属電極を用いて上記延伸フィルムを上下から挟み、室温で1,200kV/cmの直流電界を5分間印加して分極した。
(3)圧電信号の検出
上記ポーリング処理フィルムを、ITO蒸着PETフィルム(膜厚125μm;株式会社トービ社製)のITO蒸着面を内側にした状態で上下から挟み、更に2枚のガラス板(厚み2mm)を用いて上下から挟んだ。
重さ20gおよび50gの金属棒を上部ガラス板に自由落下させ、そこから得られる信号電圧を、ポケットサイズUSBデジタルストレージオシロスコープ(UDS-5252;日本データ株式会社製)を用いて、上下のITO蒸着PETフィルムから取り出した端子線と接続して測定した。また、落下距離から位置エネルギーを算出した。その結果、図10(棒の重さ 20g)および図11(棒の重さ 50g)に示すように、位置エネルギーに比例して出力電圧が変化することが確認できた。 [Test Example 4]
(Piezoelectric signal detection)
(1) Production of
A film having a thickness of 100 μm was formed by casting a methyl ethyl ketone solution of vinylidene fluoride-tetrafluoroethylene copolymer (molar ratio 80:20) on a PET substrate and evaporating the solvent at 150 ° C. This was stretched at 110 ° C. by a uniaxial stretching machine. The resulting film was stretched about 4.5 times and had a thickness of about 25 μm.
(2) Poling treatment The stretched film was sandwiched from above and below using metal electrodes, and polarized by applying a DC electric field of 1,200 kV / cm at room temperature for 5 minutes.
(3) Detection of piezoelectric signal The above-mentioned poling film is sandwiched from above and below with the ITO vapor-deposited surface of the ITO vapor-deposited PET film (film thickness 125 μm; manufactured by Tobi Co., Ltd.) inside, and two glass plates (thickness) 2 mm) was sandwiched from above and below.
Metal rods weighing 20g and 50g are freely dropped onto the upper glass plate, and the signal voltage obtained therefrom is deposited on the upper and lower ITO using a pocket size USB digital storage oscilloscope (UDS-5252; manufactured by Nihon Data Co., Ltd.). The measurement was performed by connecting to a terminal wire taken out from the PET film. The potential energy was calculated from the fall distance. As a result, as shown in FIG. 10 (bar weight 20 g) and FIG. 11 (bar weight 50 g), it was confirmed that the output voltage changed in proportion to the potential energy.
試験例4において得られた、膜厚25μmのフッ化ビニリデン-四フッ化エチレン共重合体膜(モル比 80:20)をポーリング処理した膜の両面全体に真空加熱蒸着(日立製作所製 HUS-5)によりアルミニウム電極を蒸着した(以下、両面蒸着フィルムという)。次いで打ち抜きポンチを用いて両面蒸着フィルムを直径11mmの円形に切り出した。その円形両面蒸着フィルムの両面の円心に常温硬化型ドータイト(藤倉化成(株)製)をもちいてそれぞれ金線を接着し、インピーダンスアナライザ(横河ヒューレットパッカード製4194A)を用いて、共振反共振法により電気機械結合係数ktを算出した。算出は、K.Koga,H.Ohigashi,J.Appl.Phys.,59,2142(1986))に記載の方法に従って行った。
その結果、電気機械結合係数ktは0.07であった。 [Test Example 5]
Vacuum heating deposition (HUS-5, manufactured by Hitachi, Ltd.) was performed on both surfaces of the poling treatment of the 25 μm-thick vinylidene fluoride-tetrafluoroethylene copolymer film (molar ratio 80:20) obtained in Test Example 4. ) To deposit an aluminum electrode (hereinafter referred to as a double-sided vapor-deposited film). Next, the double-sided vapor-deposited film was cut into a circle having a diameter of 11 mm using a punching punch. Resonance and anti-resonance using an impedance analyzer (4194A made by Yokogawa Hewlett-Packard) using a normal temperature hardening type dotite (made by Fujikura Kasei Co., Ltd.) and bonding gold wires to the centers of both sides of the circular double-sided vapor-deposited film. The electromechanical coupling coefficient kt was calculated by the method. The calculation is based on K.K. Koga, H .; Ohashi, J. et al. Appl. Phys. 59, 2142 (1986)).
As a result, the electromechanical coupling coefficient kt was 0.07.
5 粘着部
5a 粘着部
10 タッチ位置検出用タッチパネル
20 透明圧電シート
20a 透明圧電シート
21 シート状透明圧電体層
22 第1透明平板電極
23 第2透明平板電極
24 フレーム
24a フレーム
32 第1透明シート部材
33 第2透明シート部材
100 タッチパネル
100a タッチパネル
200 透明圧電シート
200a フレーム付透明圧電シート
221 第1透明平板電極部
222 第1リード部
231 第2透明平板電極部
232 第2リード部 DESCRIPTION OF
Claims (38)
- シート状透明圧電体層と、
当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と、
を含み、
前記第1透明平板電極は、第1透明平板電極部を有し、
前記第2透明平板電極は、第2透明平板電極部を有し、
前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する、
透明圧電シート。 A sheet-like transparent piezoelectric layer;
A first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
A second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer;
Including
The first transparent flat plate electrode has a first transparent flat plate electrode portion,
The second transparent flat plate electrode has a second transparent flat plate electrode portion,
The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Including the outline of the part,
Transparent piezoelectric sheet. - 前記シート状透明圧電体層の厚さが1~200μmである請求項1に記載の透明圧電シート。 2. The transparent piezoelectric sheet according to claim 1, wherein the thickness of the sheet-like transparent piezoelectric layer is 1 to 200 μm.
- 前記シート状透明圧電体層が有機重合体を含有する請求項1または2に記載の透明圧電シート。 The transparent piezoelectric sheet according to claim 1, wherein the sheet-like transparent piezoelectric layer contains an organic polymer.
- 前記有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である、請求項3に記載の透明圧電シート。 The transparent piezoelectric sheet according to claim 3, wherein the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- 前記第1透明平板電極は、第1リード部を更に有し、かつ
前記第2透明平板電極は、第2リード部を更に有する、
請求項1~4のいずれか1項に記載の透明圧電シート。 The first transparent flat plate electrode further includes a first lead portion, and the second transparent flat plate electrode further includes a second lead portion.
The transparent piezoelectric sheet according to any one of claims 1 to 4. - 更に粘着部を含む請求項1~5のいずれか1項に記載の透明圧電シート。 6. The transparent piezoelectric sheet according to claim 1, further comprising an adhesive part.
- タッチ位置検出用タッチパネルと組み合わせて用いられる請求項1~6のいずれか1項に記載の透明圧電シート。 The transparent piezoelectric sheet according to any one of claims 1 to 6, wherein the transparent piezoelectric sheet is used in combination with a touch position detecting touch panel.
- 前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である請求項7に記載の透明圧電シート。 The transparent piezoelectric sheet according to claim 7, wherein the touch position detection touch panel is a resistive film type or a capacitance type.
- 請求項1~8のいずれか1項に記載の透明圧電シートがフレームに収容され、
前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していない、フレーム付透明圧電シート。 The transparent piezoelectric sheet according to any one of claims 1 to 8 is accommodated in a frame,
An overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap with the frame in plan view. - シート状透明圧電体層と、
当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と、
粘着部と
を含む透明圧電シート。 A sheet-like transparent piezoelectric layer;
A first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
A second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer;
A transparent piezoelectric sheet including an adhesive portion. - タッチ位置検出用タッチパネルと組み合わせて用いられる請求項10に記載の透明圧電シート。 The transparent piezoelectric sheet according to claim 10, used in combination with a touch position detection touch panel.
- 前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である請求項11に記載の透明圧電シート。 The transparent piezoelectric sheet according to claim 11, wherein the touch position detection touch panel is a resistive film type or a capacitance type.
- 前記シート状透明圧電体層の厚さが1~200μmである請求項10~12のいずれか1項に記載の透明圧電シート。 The transparent piezoelectric sheet according to any one of claims 10 to 12, wherein the thickness of the sheet-like transparent piezoelectric layer is 1 to 200 µm.
- 前記シート状透明圧電体層が有機重合体を含有する請求項10~13のいずれか1項に記載の透明圧電シート。 The transparent piezoelectric sheet according to any one of claims 10 to 13, wherein the sheet-like transparent piezoelectric layer contains an organic polymer.
- 有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である、請求項14に記載の透明圧電シート。 The transparent piezoelectric sheet according to claim 14, wherein the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- 前記第1透明平板電極は、第1透明平板電極部を有し、
前記第2透明平板電極は、第2透明平板電極部を有し、
前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する、請求項10~15のいずれか1項に記載の透明圧電シート。 The first transparent flat plate electrode has a first transparent flat plate electrode portion,
The second transparent flat plate electrode has a second transparent flat plate electrode portion,
The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. The transparent piezoelectric sheet according to any one of claims 10 to 15, which includes an outline of a portion. - 請求項10~16のいずれか1項に記載の透明圧電シートがフレームに収容され、
前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していない、フレーム付透明圧電シート。 The transparent piezoelectric sheet according to any one of claims 10 to 16 is accommodated in a frame,
An overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap with the frame in plan view. - 透明圧電シートと、
当該透明圧電シートを収容しているフレームと、
当該フレームの表面上に設けられた粘着部と
を含み、
前記透明圧電シートは、
(1)シート状透明圧電体層と、
(2)当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
(3)当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と、
有する、
フレーム付透明圧電シート。 A transparent piezoelectric sheet;
A frame containing the transparent piezoelectric sheet;
Including an adhesive portion provided on the surface of the frame,
The transparent piezoelectric sheet is
(1) a sheet-like transparent piezoelectric layer;
(2) a first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
(3) a second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer;
Have
Transparent piezoelectric sheet with a frame. - 前記第1透明平板電極は、前記第1透明平板電極部を前記フレームの外部の配線と結ぶ第1リード部を更に有し、
前記第2透明平板電極は、前記第2透明平板電極部を前記フレームの外部の配線と結ぶ第2リード部を更に有する、請求項17または18に記載のフレーム付透明圧電シート。 The first transparent flat plate electrode further includes a first lead portion that connects the first transparent flat plate electrode portion to a wiring outside the frame,
The transparent piezoelectric sheet with a frame according to claim 17 or 18, wherein the second transparent flat plate electrode further includes a second lead portion that connects the second transparent flat plate electrode portion to a wiring outside the frame. - タッチ位置検出用タッチパネルと組み合わせて用いられる請求項17~19のいずれか1項に記載のフレーム付透明圧電シート。 The transparent piezoelectric sheet with a frame according to any one of claims 17 to 19, which is used in combination with a touch position detecting touch panel.
- 前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である請求項20に記載のフレーム付透明圧電シート。 The transparent piezoelectric sheet with a frame according to claim 20, wherein the touch position detecting touch panel is a resistive film type or a capacitance type.
- タッチ位置検出用タッチパネルと、
当該タッチ位置検出用タッチパネルの一方の面上に配置された請求項1~8、および10~16のいずれか1項に記載の透明圧電シート、または請求項9、および17~21のいずれか1項に記載のフレーム付透明圧電シートと
を含むタッチパネル。 A touch position detection touch panel;
The transparent piezoelectric sheet according to any one of claims 1 to 8 and 10 to 16, or any one of claims 9 and 17 to 21 disposed on one surface of the touch position detecting touch panel. A touch panel comprising the transparent piezoelectric sheet with a frame according to the item. - 前記タッチ位置検出用タッチパネルが抵抗膜式もしくは静電容量式である請求項22に記載のタッチパネル。 The touch panel according to claim 22, wherein the touch position detecting touch panel is a resistive film type or a capacitance type.
- さらに弾性体シートを含む、請求項22または23に記載のタッチパネル。 The touch panel according to claim 22 or 23, further comprising an elastic sheet.
- 請求項6もしくは10に記載の透明圧電シートまたは請求項18に記載のフレーム付透明圧電シートが、前記粘着部によって貼付されている、タッチ位置検出用タッチパネル。 A touch position detecting touch panel, wherein the transparent piezoelectric sheet according to claim 6 or 10 or the transparent piezoelectric sheet with frame according to claim 18 is attached by the adhesive portion.
- 請求項6もしくは10に記載の透明圧電シートまたは請求項18に記載のフレーム付透明圧電シートが、前記粘着部によって貼付されている、ディスプレイ装置。 The display apparatus with which the transparent piezoelectric sheet of Claim 6 or 10 or the transparent piezoelectric sheet with a frame of Claim 18 is stuck by the said adhesion part.
- タッチ位置検出用タッチパネルと、
当該タッチ位置検出用タッチパネルの一方の面上に配置された透明圧電シートと
を含み、
前記透明圧電シートは、
(1)シート状透明圧電体層と、
(2)当該シート状透明圧電体層の一方の面上に配置された第1透明平板電極と、
(3)当該シート状透明圧電体層の他方の面上に配置された第2透明平板電極と
を有するタッチパネル。 A touch position detection touch panel;
A transparent piezoelectric sheet disposed on one surface of the touch position detection touch panel,
The transparent piezoelectric sheet is
(1) a sheet-like transparent piezoelectric layer;
(2) a first transparent flat plate electrode disposed on one surface of the sheet-like transparent piezoelectric layer;
(3) A touch panel having a second transparent flat plate electrode disposed on the other surface of the sheet-like transparent piezoelectric layer. - 前記シート状透明圧電体層の厚さが1~200μmである請求項27に記載のタッチパネル。 The touch panel as set forth in claim 27, wherein the sheet-like transparent piezoelectric layer has a thickness of 1 to 200 µm.
- 前記シート状透明圧電体層が有機重合体を含有する請求項27または28に記載のタッチパネル。 The touch panel according to claim 27 or 28, wherein the sheet-like transparent piezoelectric layer contains an organic polymer.
- 前記有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である、請求項29に記載のタッチパネル。 30. The touch panel according to claim 29, wherein the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- 前記透明圧電シートはフレームに収容されており、
前記第1透明平板電極と前記第2透明平板電極の平面視における重複部は、平面視において、前記フレームに重複していない、
請求項27~30のいずれか1項に記載のタッチパネル。 The transparent piezoelectric sheet is accommodated in a frame,
The overlapping portion in plan view of the first transparent flat plate electrode and the second transparent flat plate electrode does not overlap the frame in plan view.
The touch panel according to any one of claims 27 to 30. - 前記第1透明平板電極は、第1透明平板電極部と、前記第1透明平板電極部を前記フレームの外部の配線と結ぶ第1リード部とを有し、
前記第2透明平板電極は、第2透明平板電極部と、前記第2透明平板電極部を前記フレームの外部の配線と結ぶ第2リード部とを有し、
前記第1透明平板電極部の輪郭が、平面視において前記第2透明平板電極部の輪郭を包含するか、または、前記第2透明平板電極部の輪郭が、平面視において前記第1透明平板電極部の輪郭を包含する、
請求項31に記載のタッチパネル。 The first transparent flat plate electrode includes a first transparent flat plate electrode portion and a first lead portion that connects the first transparent flat plate electrode portion to a wiring outside the frame,
The second transparent flat plate electrode has a second transparent flat plate electrode portion and a second lead portion that connects the second transparent flat plate electrode portion to a wiring outside the frame,
The outline of the first transparent flat plate electrode part includes the outline of the second transparent flat plate electrode part in a plan view, or the outline of the second transparent flat plate electrode part is the first transparent flat plate electrode in a plan view. Including the outline of the part,
The touch panel according to claim 31. - 第1透明平板電極および第2透明平板電極のうちのタッチ側の電極がグランド電極である請求項27~32のいずれか1項に記載のタッチパネル。 The touch panel according to any one of claims 27 to 32, wherein the touch-side electrode of the first transparent flat plate electrode and the second transparent flat plate electrode is a ground electrode.
- 前記透明圧電シートが、前記タッチ位置検出用タッチパネルのタッチ側とは反対側の面に接して配置され、前記タッチ側の透明平板電極が、タッチ位置検出用タッチパネルのグランド電極を兼ねる請求項33に記載のタッチパネル。 The transparent piezoelectric sheet is disposed in contact with a surface opposite to the touch side of the touch position detection touch panel, and the transparent plate electrode on the touch side also serves as a ground electrode of the touch position detection touch panel. The touch panel described.
- タッチ位置検出用タッチパネルと、
当該タッチ位置検出用タッチパネルの一方の面上に配置された透明圧電シートと
を含み、
前記透明圧電シートは、
(1)下面に第1透明平板電極が形成されている第1透明シート部材と、
(2)シート状透明圧電体層と、
(3)上面に第2透明平板電極が形成されている第2透明シート部材と
を有し、
前記第1透明シート部材、前記シート状透明圧電体層、および前記第2透明シート部材は、この順に積層されている、タッチパネル。 A touch position detection touch panel;
A transparent piezoelectric sheet disposed on one surface of the touch position detection touch panel,
The transparent piezoelectric sheet is
(1) a first transparent sheet member in which a first transparent flat plate electrode is formed on the lower surface;
(2) a sheet-like transparent piezoelectric layer;
(3) a second transparent sheet member having a second transparent flat plate electrode formed on the upper surface;
The touch panel in which the first transparent sheet member, the sheet-like transparent piezoelectric layer, and the second transparent sheet member are laminated in this order. - 前記シート状透明圧電体層が有機重合体を含有する請求項27~35のいずれか1項に記載のタッチパネル。 The touch panel according to any one of claims 27 to 35, wherein the sheet-like transparent piezoelectric layer contains an organic polymer.
- 有機重合体がフッ化ビニリデン-四フッ化エチレン共重合体である、請求項36に記載のタッチパネル。 The touch panel according to claim 36, wherein the organic polymer is a vinylidene fluoride-tetrafluoroethylene copolymer.
- さらに弾性体シートを含む、請求項27~37のいずれか1項に記載のタッチパネル。 The touch panel according to any one of claims 27 to 37, further comprising an elastic sheet.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020117008934A KR101273221B1 (en) | 2008-10-03 | 2009-10-01 | Touch panel and transparent piezoelectric sheet and display device |
CN200980138308XA CN102165400A (en) | 2008-10-03 | 2009-10-01 | Touch panel and transparent piezoelectric sheet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-259078 | 2008-10-03 | ||
JP2008259078 | 2008-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010038466A1 true WO2010038466A1 (en) | 2010-04-08 |
Family
ID=42073245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/005074 WO2010038466A1 (en) | 2008-10-03 | 2009-10-01 | Touch panel and transparent piezoelectric sheet |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2010108490A (en) |
KR (1) | KR101273221B1 (en) |
CN (1) | CN102165400A (en) |
TW (1) | TW201017496A (en) |
WO (1) | WO2010038466A1 (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011125408A1 (en) * | 2010-04-09 | 2011-10-13 | 株式会社村田製作所 | Touch panel and input/output device provided with the touch panel |
EP2743804A1 (en) * | 2011-08-11 | 2014-06-18 | Murata Manufacturing Co., Ltd. | Touch panel |
WO2015041198A1 (en) * | 2013-09-20 | 2015-03-26 | 株式会社村田製作所 | Pressure-detecting sensor |
WO2015053089A1 (en) * | 2013-10-07 | 2015-04-16 | 三井化学株式会社 | Pressing-force detection device, and pressing-force-detecting touch panel |
CN105511677A (en) * | 2010-05-06 | 2016-04-20 | 株式会社村田制作所 | Touch panel, touch-type input apparatus, and control method therefor |
CN105593798A (en) * | 2013-10-04 | 2016-05-18 | 株式会社村田制作所 | Touch sensor |
US9746968B1 (en) | 2010-11-10 | 2017-08-29 | Open Invention Network Llc | Touch screen display with tactile feedback using transparent actuator assemblies |
US10120477B2 (en) | 2012-09-28 | 2018-11-06 | Murata Manufacturing Co., Ltd. | Push amount detecting sensor and touch input device |
US10254894B2 (en) | 2015-12-23 | 2019-04-09 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10282046B2 (en) | 2015-12-23 | 2019-05-07 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10310659B2 (en) | 2014-12-23 | 2019-06-04 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10318038B2 (en) | 2014-12-23 | 2019-06-11 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10496210B2 (en) | 2012-04-07 | 2019-12-03 | Cambridge Touch Technologies Ltd. | Pressure sensing display device |
US10621681B1 (en) | 2010-03-25 | 2020-04-14 | Open Invention Network Llc | Method and device for automatically generating tag from a conversation in a social networking website |
US10817116B2 (en) | 2017-08-08 | 2020-10-27 | Cambridge Touch Technologies Ltd. | Device for processing signals from a pressure-sensing touch panel |
US11093088B2 (en) | 2017-08-08 | 2021-08-17 | Cambridge Touch Technologies Ltd. | Device for processing signals from a pressure-sensing touch panel |
US11128720B1 (en) | 2010-03-25 | 2021-09-21 | Open Invention Network Llc | Method and system for searching network resources to locate content |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102236447B (en) * | 2010-05-06 | 2013-07-24 | 北京京东方光电科技有限公司 | Touch screen and touch screen liquid crystal display |
CN103282865B (en) | 2010-12-28 | 2016-12-07 | 太阳诱电株式会社 | Piezoelectric vibrating device and touch-panel device |
EP2696163B1 (en) | 2011-04-08 | 2018-05-23 | Murata Manufacturing Co., Ltd. | Displacement sensor, displacement detecting apparatus, and operation device |
US9229564B2 (en) | 2012-01-18 | 2016-01-05 | Htc Corporation | Touch display and electronic device |
EP2816453B1 (en) | 2012-02-15 | 2019-03-27 | Murata Manufacturing Co., Ltd. | Touch-style input terminal |
WO2013161784A1 (en) * | 2012-04-27 | 2013-10-31 | 株式会社村田製作所 | Operation input device and information display device |
WO2013165601A1 (en) | 2012-05-03 | 2013-11-07 | Yknots Industries Llc | Moment compensated bending beam sensor for load measurement on platform supported by bending beams |
JP6158479B2 (en) * | 2012-05-23 | 2017-07-05 | 名阪真空工業株式会社 | Transparent sheet for touch screen, transparent conductive sheet and touch screen |
CN103513801B (en) | 2012-06-18 | 2016-08-10 | 宸鸿科技(厦门)有限公司 | Contactor control device and detection method thereof |
TWI472977B (en) * | 2012-09-13 | 2015-02-11 | Rtr Tech Technology Co Ltd | Touch panel and manufacturing method |
EP2899615B1 (en) * | 2012-09-20 | 2018-10-24 | Murata Manufacturing Co., Ltd. | Touch panel |
US9983715B2 (en) | 2012-12-17 | 2018-05-29 | Apple Inc. | Force detection in touch devices using piezoelectric sensors |
JP5686443B2 (en) | 2013-01-10 | 2015-03-18 | 日本写真印刷株式会社 | Film pressure sensor with adhesive layer, touch pad using the same, protection panel with touch input function, and electronic device |
JP5855604B2 (en) | 2013-02-23 | 2016-02-09 | 日本写真印刷株式会社 | Touch panel with pressure measurement |
WO2014149023A1 (en) | 2013-03-15 | 2014-09-25 | Rinand Solutions Llc | Force sensing of inputs through strain analysis |
WO2014148521A1 (en) * | 2013-03-21 | 2014-09-25 | 株式会社村田製作所 | Displacement sensor, pushing amount detection sensor, and touch input device |
GB2529088B (en) * | 2013-05-29 | 2020-07-15 | Murata Manufacturing Co | Touch input device and display device |
JP5679366B2 (en) * | 2013-06-04 | 2015-03-04 | 日本写真印刷株式会社 | Pressure detection display device and electronic device |
CN110134283B (en) | 2013-10-28 | 2022-10-11 | 苹果公司 | Piezoelectric based force sensing |
WO2015064324A1 (en) * | 2013-10-29 | 2015-05-07 | ダイキン工業株式会社 | Film |
JP6485618B2 (en) | 2013-11-11 | 2019-03-20 | Tianma Japan株式会社 | Piezoelectric sheet, touch panel using the same, and input / output device using them |
AU2015100011B4 (en) | 2014-01-13 | 2015-07-16 | Apple Inc. | Temperature compensating transparent force sensor |
JP6020745B2 (en) * | 2014-04-07 | 2016-11-02 | 株式会社村田製作所 | Touch sensor |
JP5656307B1 (en) | 2014-06-20 | 2015-01-21 | パナソニック株式会社 | Electronics |
JP5866526B2 (en) * | 2014-06-20 | 2016-02-17 | パナソニックIpマネジメント株式会社 | Electronic device, control method, and program |
JP5736551B1 (en) | 2014-06-20 | 2015-06-17 | パナソニックIpマネジメント株式会社 | Electronic device and control method |
WO2016002460A1 (en) * | 2014-07-02 | 2016-01-07 | 株式会社村田製作所 | Input terminal |
WO2016027495A1 (en) * | 2014-08-22 | 2016-02-25 | 株式会社村田製作所 | Piezoelectric sensor and detection device |
JP6691868B2 (en) | 2014-08-29 | 2020-05-13 | ダウ・東レ株式会社 | Fluorine-containing polymer-fluorine-containing organopolysiloxane composite material, method for producing the same, use thereof, and precursor composition used in the method for producing the same |
US20160329562A1 (en) | 2014-12-16 | 2016-11-10 | Sanyo Electric Co., Ltd. | Negative electrode active material for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery containing negative electrode active material |
KR101641026B1 (en) * | 2015-08-15 | 2016-07-19 | 주식회사 우정하이텍 | Capacitive type metal plate touch pad with accurate and stable touch recognition |
US9612170B2 (en) | 2015-07-21 | 2017-04-04 | Apple Inc. | Transparent strain sensors in an electronic device |
US10055048B2 (en) | 2015-07-31 | 2018-08-21 | Apple Inc. | Noise adaptive force touch |
US9874965B2 (en) | 2015-09-11 | 2018-01-23 | Apple Inc. | Transparent strain sensors in an electronic device |
JP6589479B2 (en) * | 2015-09-11 | 2019-10-16 | 株式会社村田製作所 | Display device |
US9886118B2 (en) | 2015-09-30 | 2018-02-06 | Apple Inc. | Transparent force sensitive structures in an electronic device |
US10006820B2 (en) | 2016-03-08 | 2018-06-26 | Apple Inc. | Magnetic interference avoidance in resistive sensors |
US10209830B2 (en) | 2016-03-31 | 2019-02-19 | Apple Inc. | Electronic device having direction-dependent strain elements |
WO2017183541A1 (en) | 2016-04-22 | 2017-10-26 | 東レ・ダウコーニング株式会社 | Highly dielectric film, usages thereof, and manufacturing method therefor |
TWI746560B (en) * | 2016-05-30 | 2021-11-21 | 日商日東電工股份有限公司 | Touch sensor |
US10133418B2 (en) | 2016-09-07 | 2018-11-20 | Apple Inc. | Force sensing in an electronic device using a single layer of strain-sensitive structures |
US10444091B2 (en) | 2017-04-11 | 2019-10-15 | Apple Inc. | Row column architecture for strain sensing |
US10309846B2 (en) | 2017-07-24 | 2019-06-04 | Apple Inc. | Magnetic field cancellation for strain sensors |
JP2019125083A (en) * | 2018-01-15 | 2019-07-25 | 日東電工株式会社 | Touch sensor |
JP2019125084A (en) * | 2018-01-15 | 2019-07-25 | 日東電工株式会社 | Touch sensor |
CA3103687C (en) * | 2018-08-14 | 2023-03-07 | E Ink California, Llc | Piezo electrophoretic display |
US10782818B2 (en) | 2018-08-29 | 2020-09-22 | Apple Inc. | Load cell array for detection of force input to an electronic device enclosure |
WO2022091827A1 (en) | 2020-10-30 | 2022-05-05 | 株式会社クレハ | Transparent piezoelectric laminated film and touch panel |
WO2022091829A1 (en) | 2020-10-30 | 2022-05-05 | 株式会社クレハ | Transparent conductive piezoelectric film and touch panel |
US20230397500A1 (en) | 2020-10-30 | 2023-12-07 | Kureha Corporation | Piezoelectric film, touch panel, and piezoelectric film manufacturing method |
CN115420972A (en) * | 2022-08-15 | 2022-12-02 | 业泓科技(成都)有限公司 | Ultrasonic fingerprint identification testing device and testing method thereof |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000284914A (en) * | 1999-03-29 | 2000-10-13 | Ricoh Co Ltd | Touch panel device |
JP2004125571A (en) * | 2002-10-01 | 2004-04-22 | National Institute Of Advanced Industrial & Technology | Transparent piezoelectric sensor and input device having the same |
JP2005353565A (en) * | 2004-05-10 | 2005-12-22 | Fujikura Ltd | Hybrid sensor and electrostatic capacity type proximity sensor |
JP2007164760A (en) * | 2005-11-21 | 2007-06-28 | Matsushita Electric Ind Co Ltd | Touch panel and input device using it |
JP2008508629A (en) * | 2004-08-02 | 2008-03-21 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Touch screen with pressure-dependent visual feedback |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7152482B2 (en) * | 2002-10-01 | 2006-12-26 | National Institute Of Advanced Industrial Science & Technology | Piezoelectric sensor and input device including same |
CN101592499B (en) * | 2004-05-10 | 2011-11-09 | 株式会社藤仓 | Electrostatic capacitance sensor |
JP4687985B2 (en) * | 2006-08-10 | 2011-05-25 | 株式会社大真空 | Method for adjusting frequency of piezoelectric vibration device |
KR20070029786A (en) * | 2007-02-22 | 2007-03-14 | 정병현 | Touch panel |
-
2009
- 2009-09-30 JP JP2009228872A patent/JP2010108490A/en active Pending
- 2009-10-01 WO PCT/JP2009/005074 patent/WO2010038466A1/en active Application Filing
- 2009-10-01 CN CN200980138308XA patent/CN102165400A/en active Pending
- 2009-10-01 KR KR1020117008934A patent/KR101273221B1/en active IP Right Grant
- 2009-10-02 TW TW098133620A patent/TW201017496A/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000284914A (en) * | 1999-03-29 | 2000-10-13 | Ricoh Co Ltd | Touch panel device |
JP2004125571A (en) * | 2002-10-01 | 2004-04-22 | National Institute Of Advanced Industrial & Technology | Transparent piezoelectric sensor and input device having the same |
JP2005353565A (en) * | 2004-05-10 | 2005-12-22 | Fujikura Ltd | Hybrid sensor and electrostatic capacity type proximity sensor |
JP2008508629A (en) * | 2004-08-02 | 2008-03-21 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Touch screen with pressure-dependent visual feedback |
JP2007164760A (en) * | 2005-11-21 | 2007-06-28 | Matsushita Electric Ind Co Ltd | Touch panel and input device using it |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11128720B1 (en) | 2010-03-25 | 2021-09-21 | Open Invention Network Llc | Method and system for searching network resources to locate content |
US10621681B1 (en) | 2010-03-25 | 2020-04-14 | Open Invention Network Llc | Method and device for automatically generating tag from a conversation in a social networking website |
WO2011125408A1 (en) * | 2010-04-09 | 2011-10-13 | 株式会社村田製作所 | Touch panel and input/output device provided with the touch panel |
CN105511677A (en) * | 2010-05-06 | 2016-04-20 | 株式会社村田制作所 | Touch panel, touch-type input apparatus, and control method therefor |
CN105511677B (en) * | 2010-05-06 | 2018-12-14 | 株式会社村田制作所 | Touch panel, touch input unit and its control method |
US9746968B1 (en) | 2010-11-10 | 2017-08-29 | Open Invention Network Llc | Touch screen display with tactile feedback using transparent actuator assemblies |
TWI486850B (en) * | 2011-08-11 | 2015-06-01 | Murata Manufacturing Co | Touch panel |
EP2743804A1 (en) * | 2011-08-11 | 2014-06-18 | Murata Manufacturing Co., Ltd. | Touch panel |
EP2743804A4 (en) * | 2011-08-11 | 2015-04-08 | Murata Manufacturing Co | Touch panel |
US10496210B2 (en) | 2012-04-07 | 2019-12-03 | Cambridge Touch Technologies Ltd. | Pressure sensing display device |
US10120477B2 (en) | 2012-09-28 | 2018-11-06 | Murata Manufacturing Co., Ltd. | Push amount detecting sensor and touch input device |
JP5950053B2 (en) * | 2013-09-20 | 2016-07-13 | 株式会社村田製作所 | Press detection sensor |
WO2015041198A1 (en) * | 2013-09-20 | 2015-03-26 | 株式会社村田製作所 | Pressure-detecting sensor |
US10309844B2 (en) | 2013-09-20 | 2019-06-04 | Murata Manufacturing Co., Ltd. | Press detecting sensor |
CN105593798A (en) * | 2013-10-04 | 2016-05-18 | 株式会社村田制作所 | Touch sensor |
CN105593798B (en) * | 2013-10-04 | 2018-11-23 | 株式会社村田制作所 | touch sensor |
US10190924B2 (en) | 2013-10-07 | 2019-01-29 | Murata Manufacturing Co., Ltd. | Pressure-sensing device and pressure-sensing touch panel |
WO2015053089A1 (en) * | 2013-10-07 | 2015-04-16 | 三井化学株式会社 | Pressing-force detection device, and pressing-force-detecting touch panel |
EP3035022A4 (en) * | 2013-10-07 | 2017-04-05 | Mitsui Chemicals, Inc. | Pressing-force detection device, and pressing-force-detecting touch panel |
JPWO2015053089A1 (en) * | 2013-10-07 | 2017-03-09 | 三井化学株式会社 | Press detection device and press detection touch panel |
EP3035022A1 (en) * | 2013-10-07 | 2016-06-22 | Mitsui Chemicals, Inc. | Pressing-force detection device, and pressing-force-detecting touch panel |
US10310659B2 (en) | 2014-12-23 | 2019-06-04 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10318038B2 (en) | 2014-12-23 | 2019-06-11 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10254894B2 (en) | 2015-12-23 | 2019-04-09 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10282046B2 (en) | 2015-12-23 | 2019-05-07 | Cambridge Touch Technologies Ltd. | Pressure-sensitive touch panel |
US10817116B2 (en) | 2017-08-08 | 2020-10-27 | Cambridge Touch Technologies Ltd. | Device for processing signals from a pressure-sensing touch panel |
US11093088B2 (en) | 2017-08-08 | 2021-08-17 | Cambridge Touch Technologies Ltd. | Device for processing signals from a pressure-sensing touch panel |
Also Published As
Publication number | Publication date |
---|---|
KR20110066185A (en) | 2011-06-16 |
TW201017496A (en) | 2010-05-01 |
JP2010108490A (en) | 2010-05-13 |
CN102165400A (en) | 2011-08-24 |
KR101273221B1 (en) | 2013-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010038466A1 (en) | Touch panel and transparent piezoelectric sheet | |
JP2011222679A (en) | Transparent piezoelectric sheet | |
TWI497360B (en) | Respectively, with a transparent piezoelectric film attached to the framework of transparent piezoelectric film, touch panel and electronic devices | |
JP5442519B2 (en) | Transparent piezoelectric sheet, transparent piezoelectric sheet with a frame containing the same, touch position detecting touch panel, display device, touch panel, and electronic device | |
CN101143498B (en) | Transparent electrically conductive laminated body and touching panel with the same | |
EP3073357B1 (en) | Composite polarizing plate-integrated touch sensing electrode and touch screen panel having same | |
US20100328258A1 (en) | Touch panel and detecting method thereof | |
JP4777008B2 (en) | Conductive laminated film, electrode plate for touch panel and touch panel | |
KR100842199B1 (en) | High durability touch panel | |
TWI733819B (en) | Piezoelectric film with transparent electrode and pressure sensor | |
KR101406221B1 (en) | Integrated touch polarizing plate and liquid crystal display device integrating the same | |
JP2006244771A (en) | Transparent conductive film and touch panel | |
CN205451012U (en) | Polaroid and touch -sensitive display device with touch -control and forced induction function | |
CN105892743B (en) | Polaroid with touch-control and pressure sensitive function and touch control display apparatus | |
JPH08166849A (en) | Plastic laminated sheet for touch panel and plastic substrate touch panel | |
JP2002073282A (en) | Transparent conductive film and touch panel electrode | |
JP6724978B2 (en) | Bimorph type piezoelectric film | |
JP6453850B2 (en) | Touch panel, method for producing the same, and AG-PD-ND alloy for touch panel | |
CN105518589A (en) | Touch sensing electrode and touch screen panel comprising same | |
CN208255862U (en) | A kind of piezoelectric touch screen and electronic product | |
KR101485774B1 (en) | Capacitance type touch panel, preparing method thereof and liquid crystal display device integrating the same | |
CN212781569U (en) | Liquid crystal display device having a plurality of pixel electrodes | |
JP2019087211A (en) | Touch panel laminate and touch panel structure including the same | |
JPH04209430A (en) | Touch panel and manufacture thereof | |
KR20160087120A (en) | Touch window |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980138308.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09817506 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20117008934 Country of ref document: KR Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09817506 Country of ref document: EP Kind code of ref document: A1 |