WO2014181574A1 - 情報表示装置 - Google Patents
情報表示装置 Download PDFInfo
- Publication number
- WO2014181574A1 WO2014181574A1 PCT/JP2014/055894 JP2014055894W WO2014181574A1 WO 2014181574 A1 WO2014181574 A1 WO 2014181574A1 JP 2014055894 W JP2014055894 W JP 2014055894W WO 2014181574 A1 WO2014181574 A1 WO 2014181574A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- input
- cladding layer
- optical waveguide
- tip
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 238000005253 cladding Methods 0.000 claims description 57
- 210000004932 little finger Anatomy 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 19
- 239000003822 epoxy resin Substances 0.000 description 12
- 229920000647 polyepoxide Polymers 0.000 description 12
- 238000001514 detection method Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 6
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229940116333 ethyl lactate Drugs 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000208140 Acer Species 0.000 description 1
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000000206 photolithography Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/125—Bends, branchings or intersections
-
- 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic 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
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
Definitions
- the present invention relates to an information display device capable of writing a memo or the like on a display and simultaneously displaying the memo or the like as digital data (electronic data) on the display.
- memo tools that digitally process memos and the like, such as an electronic memo processing device (see, for example, Patent Document 1).
- an electronic memo processing device see, for example, Patent Document 1
- This is provided with a display for displaying a memo or the like to be input, and the memo or the like can be input to the display using a dedicated pen.
- the display is a touch panel that senses the tip of the dedicated pen.
- the tip of the dedicated pen is moved by bringing the tip of the dedicated pen into contact with the display and moving the dedicated pen. It is converted into electronic data as a memo or the like, and is input to the display and displayed.
- tablet-type terminals and smartphones are equipped with a display so that they can be input with a fingertip instead of the dedicated pen. That is, the display in the tablet-type terminal or the like is a touch panel that senses a weak current (change in the capacitance of the human body) that occurs when touched with a fingertip. By moving the fingertip, the movement trajectory of the fingertip is converted into electronic data such as a memo, and is input to the display and displayed.
- a weak current change in the capacitance of the human body
- none of the above displays can be input with a general writing instrument such as a pen that emits ink, or a simple elongated rod-like body that does not eject ink.
- the present invention has been made in view of such circumstances, and can be input with an input body such as a general writing instrument.
- an input body such as a general writing instrument.
- the tip input section of the input body and the input body An object of the present invention is to provide an information display device that can identify and detect the tip input section even when the little finger of the hand holding the base or the base portion of the hand touches the display at the same time.
- an information display device is an information display device that has a display for displaying information and displays on the display as input information the movement of the tip input portion of the input body on the display. Then, the optical waveguide of the position sensor (A) below is placed on the surface of the display, and the movement trajectory of the tip input section on the surface of the optical waveguide is used as the input information.
- a sheet-like optical waveguide in which a plurality of linear cores are arranged and formed on the surface of the sheet-like under-cladding layer in a lattice shape, and the over-cladding layer is formed in a sheet shape in a state of covering these cores;
- a light emitting element connected to one end surface of the core, a light receiving element connected to the other end surface of the core, and a movement locus of the tip input portion of the input body on the surface of the optical waveguide are changed by the movement of the core.
- a moving locus specifying means for specifying the amount of light propagation wherein the elastic modulus of the core is set to be larger than the elastic modulus of the under-cladding layer and the elastic modulus of the over-cladding layer, and the surface of the sheet-like optical waveguide In the pressing state by the tip input portion in the above, the deformation rate of the cross section of the core in the pressing direction is smaller than the deformation rate of the cross sections of the over cladding layer and the under cladding layer.
- a position sensor that is so.
- the “deformation rate” refers to the ratio of the amount of change of each thickness during pressing to the thickness of the core, over cladding layer and under cladding layer before pressing in the pressing direction.
- the “movement” of the pen tip includes a case where the movement distance is 0 (zero), and the “movement locus” in that case is a point.
- the information display device is a sheet-like optical waveguide in which a plurality of linear cores are arranged and formed in a lattice pattern as means for detecting a movement locus of a tip input portion (a pen tip or the like) of an input body (a pen or the like).
- the position sensor provided with is used. That is, the movement trajectory of the pen tip on the surface of the optical waveguide is specified by the light propagation amount of the core changed by the movement. Therefore, a dedicated pen is not required for input, and a general writing instrument such as a pen that emits ink or a simple elongated rod-like body that does not eject ink can be used as the input body.
- the elastic modulus of the core is set larger than the elastic modulus of the under cladding layer and the elastic modulus of the over cladding layer. Therefore, when the surface of the over clad layer of the optical waveguide is pressed, the deformation rate of the cross section of the core in the pressing direction becomes smaller than the deformation rate of the cross section of the over clad layer and the under clad layer, The cross-sectional area is maintained. Then, when information such as characters is input by moving the tip input portion of the input body on the surface of the optical waveguide, the bending state of the core is applied to the tip input portion of the input body at the pressing portion by the tip input portion.
- the information display device of the present invention can detect only the movement trajectory (information of input characters or the like) of the tip input unit such as a pen tip and display it on the display.
- FIG. 1 It is explanatory drawing which shows typically one Embodiment of the information display apparatus of this invention.
- the position sensor which comprises the said information display apparatus is shown typically, (a) is the top view, (b) is the expanded sectional view.
- (A) is sectional drawing which shows typically the state of the optical waveguide of the said position sensor pressed by the input body, (b) is a cross section which shows typically the state of the said optical waveguide pressed by the hand.
- FIG. 1 shows an embodiment of the information display device of the present invention.
- the information display device of this embodiment includes an information display body P having a quadrangular display D, and a quadrangular sheet-shaped optical waveguide W attached to the surface of the display D.
- the optical waveguide W is schematically shown in FIG. 2A, and an enlarged sectional view of the central portion is schematically shown in FIG.
- the under-cladding layer 1 and the over-cladding layer 3 sandwich the under-cladding layer 1 in contact with the surface of the display D.
- a light emitting element 4 is connected to one end face of the linear core 2 constituting the lattice-like core 2, and the other end face of the linear core 2.
- a light receiving element 5 is connected, and light emitted from the light emitting element 4 passes through the core 2 and is received by the light receiving element 5.
- the light emitting element 4 and the light receiving element 5 are controlled by a CPU (Central Processing Unit) (not shown), and the CPU is mounted on a circuit board (not shown) together with the light emitting element 4 and the light receiving element 5. It is installed.
- the circuit board on which the CPU and the like are mounted is arranged inside the information display body P (see FIG. 1). Therefore, the CPU, the light emitting element 4, the light receiving element 5, and the circuit board are not shown in FIG.
- the elastic modulus of the core 2 is set larger than the elastic modulus of the under cladding layer 1 and the elastic modulus of the over cladding layer 3.
- the information display body P is a computer having a display D such as a liquid crystal display for information display or an organic EL display, such as a tablet terminal, a smartphone, or a notebook personal computer.
- a display D such as a liquid crystal display for information display or an organic EL display, such as a tablet terminal, a smartphone, or a notebook personal computer.
- the core 2 is indicated by a chain line, and the thickness of the chain line indicates the thickness of the core 2.
- the number of cores 2 is omitted.
- the arrow in FIG. 2A indicates the direction in which the light travels.
- the power source required for the light emitting element 4 and the CPU uses the power source provided in the information display body P.
- a portion of the optical waveguide W corresponding to the lattice-shaped core 2 is an input region.
- the input of information to the optical waveguide W by the input body 10 such as a pen is performed so that the surface of the over clad layer 3 is written so as to write characters on the surface of the over clad layer 3 in the input region.
- it is performed by moving the tip input part (pen nib etc.) 10a (see FIG. 1) of the input body 10. That is, as shown in the cross-sectional views of FIGS.
- the over-cladding layer 3 and the under-cladding layer 1 having a low elastic modulus are deformed so that the core 2 having a high elastic modulus maintains the cross-sectional area while maintaining the tip input portion 10a and Along the part of the hand 20, it bends so as to sink into the underclad layer 1.
- the detection level of light at the light receiving element 5 is lowered in the core 2 pressed by the tip input portion 10a, and the detection level is not lowered in the core 2 pressed by the hand 20 having the input body 10. can do.
- the position (coordinates) of the tip input portion 10a can be detected from the decrease in the light detection level.
- the portion of the hand 20 whose detection level does not decrease is the same as the state where it is not pressed, and is not sensed.
- the tip input unit 10a is a signal obtained by tracing the position corresponding to the electric signal from the electric signal output from the light receiving element 5 based on the decrease in the light detection level at the light receiving element 5.
- a program for specifying the movement locus is incorporated. That is, the optical waveguide W, the CPU, the light emitting element 4 and the light receiving element 5 (see FIGS. 2A and 2B) have a distal end input portion (such as a pen) 10 used for inputting information (such as a pen).
- This is a position sensor A for detecting the position of a pen tip or the like) 10a.
- Data indicating the movement trajectory of the tip input portion 10a of the input body 10 is output to the CPU (not shown) of the information display body P, and is appropriately imaged by the CPU of the information display body P. The movement trajectory is displayed on the display D.
- a plurality of linear cores 2 are arranged and formed in a lattice pattern as means for detecting the movement trajectory of the tip input portion (pen tip etc.) 10a of the input body (pen etc.) 10. Since a sheet-shaped optical waveguide W is used, a dedicated pen is not required for input, and a general writing instrument such as a pen that emits ink or a simple elongated rod-like object that does not eject ink is used as the input body 10. Can do.
- the elastic modulus of the core 2 is set to be larger than the elastic modulus of the under cladding layer 1 and the elastic modulus of the over cladding layer 3, the hand 20 holding the input body 10 is attached to the optical waveguide W. Even if the button is pressed, as described above, only the position of the tip input portion 10a can be detected, and the portion of the hand 20 can be prevented from being detected.
- the portion of the optical waveguide W pressed by the tip input portion 10a of the input body 10 is deformed as described above. Is good.
- the information display body P such as the tablet type terminal is normally provided with an information storage medium such as a memory in advance
- the input information (information displayed on the display D) is stored in the information storage medium. Can be remembered.
- the under cladding layer 1, the core 2, and the over cladding layer 3 returns to the original state (see FIG. 2B) by its restoring force.
- the submerged depth L of the core 2 into the under cladding layer 1 is preferably up to 2000 ⁇ m. If it exceeds that, the under cladding layer 1, the core 2 and the over cladding layer 3 may not return to their original state, or the optical waveguide W may be cracked.
- the elastic modulus of the core 2 is preferably in the range of 1 GPa to 10 GPa, more preferably in the range of 2 GPa to 5 GPa. If the elastic modulus of the core 2 is too low, the shape of the tip input portion 10a such as a pen tip tends to prevent the cross-sectional area of the core 2 from being held by the pressure of the tip input portion 10a (the core 2 is crushed). There is a possibility that the position of the input unit 10a cannot be detected properly. On the other hand, if the elastic modulus of the core 2 is too high, the bending of the core 2 due to the pressure of the tip input portion 10a tends to be a gentle bend without becoming a sharp bend along the tip input portion 10a.
- the dimensions of the core 2 are set, for example, within a range of 5 to 100 ⁇ m in thickness and within a range of 5 to 500 ⁇ m in width.
- the elastic modulus of the over clad layer 3 is preferably in the range of 0.1 MPa to less than 10 GPa, more preferably in the range of 1 MPa to less than 5 GPa. If the elastic modulus of the over clad layer 3 is too low, the over clad layer 3 is too soft and tends to be damaged by the pressure of the tip input portion 10a due to the shape of the tip input portion 10a such as a pen tip, and the core 2 can be protected. become unable. On the other hand, when the elastic modulus of the over clad layer 3 is too high, the core 2 is crushed and the position of the tip input portion 10a is appropriately adjusted due to the tendency to be crushed by the pressure of the tip input portion 10a and the hand 20. May not be detected.
- the thickness of the over clad layer 3 is set within a range of 1 to 200 ⁇ m, for example.
- the elastic modulus of the under cladding layer 1 is preferably in the range of 0.1 MPa to 1 GPa, more preferably in the range of 1 MPa to 100 MPa. If the elastic modulus of the under-cladding layer 1 is too low, the under-cladding layer 1 tends to be too soft to return to the original state after being pressed by the tip input portion 10a such as a pen tip and cannot be continuously performed. On the other hand, if the modulus of elasticity of the underclad layer 1 is too high, the core 2 is crushed and the position of the tip input portion 10a is appropriately adjusted even if the tip input portion 10a or the pressure of the hand 20 is crushed. May not be detected. Note that the thickness of the under-cladding layer 1 is set within a range of 20 to 2000 ⁇ m, for example.
- the under cladding layer 1 and the over cladding layer 3 As a material for forming the core 2, the under cladding layer 1 and the over cladding layer 3, from the necessity of viewing display information on the display D through the optical waveguide W, a light-transmitting photosensitive resin, a thermosetting resin, and the like are listed. It is done. And the optical waveguide W is producible with the manufacturing method according to the formation material.
- the refractive index of the core 2 is set larger than the refractive indexes of the under cladding layer 1 and the over cladding layer 3.
- the elastic modulus and refractive index can be adjusted by, for example, selecting the type of each forming material and adjusting the composition ratio.
- a light-transmitting elastic layer may be provided on the back surface of the under cladding layer 1.
- the elastic force of the elastic layer is utilized.
- the weak restoring force is assisted, and after the pressing by the distal end input portion 10a of the input body 10 is released, the original state can be restored.
- the tip input unit 10a such as a pen tip is detected, and in order to prevent the hand 20 having the input body 10 such as a pen from being sensed, a pressing portion by the tip input unit 10a is used.
- the amount of light leakage (scattering) due to the sharp bending of the core 2 is important.
- the maximum value ⁇ max of the refractive index difference ⁇ is expressed by the following equation (1). That is, if the refractive index difference ⁇ is larger than the maximum value ⁇ max, even if the tip input portion 10a is pressed, the amount of light leakage (scattering) is small and the light detection level at the light receiving element 5 is not sufficiently lowered. Therefore, it becomes difficult to distinguish between the position of the tip input portion 10a and the position of the hand 20.
- the minimum value ⁇ min of the refractive index difference ⁇ is expressed by the following equation (2). That is, when the refractive index difference ⁇ is smaller than the minimum value ⁇ min, light leakage (scattering) occurs even in the pressed portion by the hand 20, and it is difficult to distinguish the position of the tip input portion 10a from the position of the hand 20. Become.
- the refractive index difference ⁇ is preferably set between the minimum value ⁇ min and the maximum value ⁇ max.
- the radius of curvature R (unit: ⁇ m) of the tip input portion 10a is in the range of 100 to 1000
- the thickness T (unit: ⁇ m) of the core 2 is in the range of 10 to 100
- the ratio S is 1 to 1. If it is in the range of 100, the refractive index difference ⁇ is in the range of 1.0 ⁇ 10 ⁇ 3 to 7.95 ⁇ 10 ⁇ 2 .
- the minimum value ⁇ min is set to 1.0 ⁇ 10 ⁇ 3 (constant).
- the CPU, the light emitting element 4, the light receiving element 5, and the circuit board are arranged inside the information display body P. However, all or a part of them may be arranged outside the information display body P. Good.
- Component a 30 parts by weight of epoxy resin (Epogosei PT, manufactured by Yokkaichi Gosei Co., Ltd.)
- Ingredient b 70 weight part of epoxy resins (the Daicel company make, EHPE3150).
- Component c 4 parts by weight of a photoacid generator (manufactured by Sun Apro, CPI 200K).
- Component d 100 parts by weight of ethyl lactate (Wako Pure Chemical Industries, Ltd.) By mixing these components a to d, an over clad layer forming material was prepared.
- Component e 80 parts by weight of an epoxy resin (manufactured by Daicel Corporation, EHPE3150).
- Component f 20 parts by weight of an epoxy resin (manufactured by Nippon Steel Chemical Co., Ltd., YDCN700-10).
- Component g 1 part by weight of a photoacid generator (made by ADEKA, SP170).
- Component h 50 parts by weight of ethyl lactate (manufactured by Wako Pure Chemical Industries, Ltd.)
- a core forming material was prepared by mixing these components e to h.
- [Formation material of under cladding layer] Component i: 75 parts by weight of epoxy resin (Epogosei PT, manufactured by Yokkaichi Gosei Co., Ltd.) Component j: 25 parts by weight of an epoxy resin (manufactured by Mitsubishi Chemical Corporation, JER1007).
- Component k 4 parts by weight of a photoacid generator (manufactured by San Apro, CPI 200K).
- Component l 50 parts by weight of ethyl lactate (Wako Pure Chemical Industries, Ltd.) By mixing these components i to l, a material for forming the underclad layer was prepared.
- An over clad layer was formed on the surface of the glass substrate by spin coating using the over clad layer forming material.
- the over cladding layer had a thickness of 5 ⁇ m, an elastic modulus of 1.2 GPa, and a refractive index of 1.503.
- a core was formed on the surface of the over clad layer by photolithography using the core forming material.
- the thickness of the core was 30 ⁇ m
- the core width of the lattice-like portion was 100 ⁇ m
- the pitch was 600 ⁇ m
- the elastic modulus was 3 GPa
- the refractive index was 1.523.
- an under clad layer was formed on the surface of the over clad layer by spin coating using the under clad layer forming material so as to cover the core.
- the thickness of the under cladding layer was 200 ⁇ m, the elastic modulus was 3 MPa, and the refractive index was 1.503.
- Component p 30 parts by weight of epoxy resin (Epogosei PT, manufactured by Yokkaichi Gosei Co., Ltd.)
- Component q 70 parts by weight of an epoxy resin (manufactured by DIC, EXA-4816).
- Component r 4 weight part of photo-acid generators (made by ADEKA, SP170). The core forming material was prepared by mixing these components p to r.
- [Formation material of under cladding layer] Component s: 40 parts by weight of epoxy resin (Epogosei PT, manufactured by Yokkaichi Gosei Co., Ltd.) Component t: 60 parts by weight of an epoxy resin (Daicel, 2021P). Component u: 4 weight part of photo-acid generators (made by ADEKA, SP170). By mixing these components s to u, a material for forming the under cladding layer was prepared.
- epoxy resin Epogosei PT, manufactured by Yokkaichi Gosei Co., Ltd.
- Component t 60 parts by weight of an epoxy resin (Daicel, 2021P).
- Component u 4 weight part of photo-acid generators (made by ADEKA, SP170).
- a light emitting element (Optowell, XH85-S0603-2s) is connected to one end face of the core of each optical waveguide of the above examples and comparative examples, and a light receiving element (Hamamatsu Photonics, s10226) is connected to the other end face of the core.
- a circuit mounted with the light emitting element, the light receiving element, a CPU (manufactured by Microchip, dsPIC33FJ128MC706) and the like for controlling these elements is provided, and each position sensor of the example and the comparative example is manufactured.
- a tablet-type terminal (ICONIA TAB W500, manufactured by acer) was prepared, and the optical waveguide of the position sensor was attached to the surface of the display. At this time, the under cladding layer was in contact with the surface of the display.
- the circuit on which the CPU and the like of the position sensor are mounted is arranged inside the tablet type terminal, and the power source necessary for the circuit is a power source provided in the tablet type terminal. In this way, the position sensor can be used.
- the display of the tablet-type terminal includes a sensor for detecting a change in the capacitance of the human body, but power supply to the sensor is stopped so that the sensor does not work.
- the position sensor of the embodiment can detect only the input information and not the unnecessary information even if the input body is changed.
- the information display device of the present invention can be used to display on a display what is input with a general writing instrument or the like on the display.
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
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Abstract
Description
(A)シート状のアンダークラッド層の表面に、複数の線状のコアを格子状に配置形成し、これらコアを被覆した状態でオーバークラッド層をシート状に形成したシート状の光導波路と、上記コアの一端面に接続される発光素子と、上記コアの他端面に接続される受光素子と、上記光導波路の表面における入力体の先端入力部の移動軌跡を、その移動により変化したコアの光伝播量によって特定する移動軌跡特定手段とを備え、上記コアの弾性率が、上記アンダークラッド層の弾性率および上記オーバークラッド層の弾性率よりも大きく設定され、上記シート状の光導波路の表面における上記先端入力部による押圧状態で、その押圧方向のコアの断面の変形率が、オーバークラッド層およびアンダークラッド層の断面の変形率よりも小さくなるようになっている位置センサ。
成分a:エポキシ樹脂(四日市合成社製、エポゴーセーPT)30重量部。
成分b:エポキシ樹脂(ダイセル社製、EHPE3150)70重量部。
成分c:光酸発生剤(サンアプロ社製、CPI200K)4重量部。
成分d:乳酸エチル(和光純薬社製)100重量部。
これら成分a~dを混合することにより、オーバークラッド層の形成材料を調製した。
成分e:エポキシ樹脂(ダイセル社製、EHPE3150)80重量部。
成分f:エポキシ樹脂(新日鉄化学社製、YDCN700-10)20重量部。
成分g:光酸発生剤(ADEKA社製、SP170)1重量部。
成分h:乳酸エチル(和光純薬社製)50重量部。
これら成分e~hを混合することにより、コアの形成材料を調製した。
成分i:エポキシ樹脂(四日市合成社製、エポゴーセーPT)75重量部。
成分j:エポキシ樹脂(三菱化学社製、JER1007)25重量部。
成分k:光酸発生剤(サンアプロ社製、CPI200K)4重量部。
成分l:乳酸エチル(和光純薬社製)50重量部。
これら成分i~lを混合することにより、アンダークラッド層の形成材料を調製した。
ガラス製基材の表面に、上記オーバークラッド層の形成材料を用いて、スピンコート法により、オーバークラッド層を形成した。このオーバークラッド層の厚みは5μm、弾性率は1.2GPa、屈折率は1.503であった。
〔オーバークラッド層の形成材料〕
成分m:エポキシ樹脂(四日市合成社製、エポゴーセーPT)40重量部。
成分n:エポキシ樹脂(ダイセル社製、2021P)60重量部。
成分o:光酸発生剤(ADEKA社製、SP170)4重量部。
これら成分m~oを混合することにより、オーバークラッド層の形成材料を調製した。
成分p:エポキシ樹脂(四日市合成社製、エポゴーセーPT)30重量部。
成分q:エポキシ樹脂(DIC社製、EXA-4816)70重量部。
成分r:光酸発生剤(ADEKA社製、SP170)4重量部。
これら成分p~rを混合することにより、コアの形成材料を調製した。
成分s:エポキシ樹脂(四日市合成社製、エポゴーセーPT)40重量部。
成分t:エポキシ樹脂(ダイセル社製、2021P)60重量部。
成分u:光酸発生剤(ADEKA社製、SP170)4重量部。
これら成分s~uを混合することにより、アンダークラッド層の形成材料を調製した。
上記実施例と同様にして、同寸法の光導波路を作製した。ただし、弾性率は、オーバークラッド層が1GPa、コアが25MPa、アンダークラッド層が1GPaであった。また、屈折率は、オーバークラッド層が1.504、コアが1.532、アンダークラッド層が1.504であった。
上記実施例および比較例の各光導波路のコアの一端面に、発光素子(Optowell社製、XH85-S0603-2s )を接続し、コアの他端面に、受光素子(浜松ホトニクス社製、s10226)を接続し、上記発光素子,上記受光素子,それら素子を制御するCPU(マイクロチップ社製、dsPIC33FJ128MC706)等を搭載した回路を設け、実施例および比較例の各位置センサを作製した。
タブレット型端末(acer社製、ICONIA TAB W500 )を準備し、そのディスプレイの表面に、上記位置センサの光導波路を貼り付けた。このとき、アンダークラッド層が上記ディスプレイの表面に接するようにした。また、上記位置センサの、上記CPU等を搭載した回路は、上記タブレット型端末の内部に配置し、その回路に必要な電源は、上記タブレット型端末に備えられている電源を利用した。このようにして、上記位置センサを使用可能にした。なお、上記タブレット型端末のディスプレイは、人体の静電容量の変化を感知するセンサを備えているが、そのセンサが働かないようそのセンサへの電源供給を止めた。
そして、入力者がボールペン(ペン先の曲率半径350μm)を手に持ち、上記入力装置の入力領域内で、文字を入力した。
D ディスプレイ
P 情報表示体
W 光導波路
2 コア
3 オーバークラッド層
10 入力体
Claims (1)
- 情報表示用のディスプレイを有し、そのディスプレイ上における入力体の先端入力部の移動を入力情報として上記ディスプレイに表示する情報表示装置であって、上記ディスプレイの表面に、下記(A)の位置センサの光導波路が載置され、その光導波路の表面での上記先端入力部の移動軌跡を上記入力情報とすることを特徴とする情報表示装置。
(A)シート状のアンダークラッド層の表面に、複数の線状のコアを格子状に配置形成し、これらコアを被覆した状態でオーバークラッド層をシート状に形成したシート状の光導波路と、上記コアの一端面に接続される発光素子と、上記コアの他端面に接続される受光素子と、上記光導波路の表面における入力体の先端入力部の移動軌跡を、その移動により変化したコアの光伝播量によって特定する移動軌跡特定手段とを備え、上記コアの弾性率が、上記アンダークラッド層の弾性率および上記オーバークラッド層の弾性率よりも大きく設定され、上記シート状の光導波路の表面における上記先端入力部による押圧状態で、その押圧方向のコアの断面の変形率が、オーバークラッド層およびアンダークラッド層の断面の変形率よりも小さくなるようになっている位置センサ。
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JPH01172916A (ja) * | 1987-12-28 | 1989-07-07 | Nok Corp | 光スイッチ |
JPH03256111A (ja) * | 1990-03-06 | 1991-11-14 | Fujitsu Ltd | 光学式座標入力装置 |
JPH1049285A (ja) * | 1996-08-06 | 1998-02-20 | Hitachi Ltd | タブレット |
JP2001222378A (ja) * | 2000-02-10 | 2001-08-17 | Nec Saitama Ltd | タッチパネル入力装置 |
JP3746378B2 (ja) | 1997-08-26 | 2006-02-15 | シャープ株式会社 | 電子メモ処理装置、電子メモ処理方法、および電子メモ処理プログラムを記録したコンピュータ読取り可能な記録媒体 |
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JP2009265164A (ja) * | 2008-04-22 | 2009-11-12 | Hitachi Cable Ltd | フレキシブル光配線及びその製造方法 |
JP5239835B2 (ja) * | 2008-12-24 | 2013-07-17 | 富士ゼロックス株式会社 | 光導波路及び光導波路型タッチパネル |
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- 2014-03-07 WO PCT/JP2014/055894 patent/WO2014181574A1/ja active Application Filing
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH01172916A (ja) * | 1987-12-28 | 1989-07-07 | Nok Corp | 光スイッチ |
JPH03256111A (ja) * | 1990-03-06 | 1991-11-14 | Fujitsu Ltd | 光学式座標入力装置 |
JPH1049285A (ja) * | 1996-08-06 | 1998-02-20 | Hitachi Ltd | タブレット |
JP3746378B2 (ja) | 1997-08-26 | 2006-02-15 | シャープ株式会社 | 電子メモ処理装置、電子メモ処理方法、および電子メモ処理プログラムを記録したコンピュータ読取り可能な記録媒体 |
JP2001222378A (ja) * | 2000-02-10 | 2001-08-17 | Nec Saitama Ltd | タッチパネル入力装置 |
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US20160085323A1 (en) | 2016-03-24 |
KR20160007503A (ko) | 2016-01-20 |
EP2977869A1 (en) | 2016-01-27 |
TW201447691A (zh) | 2014-12-16 |
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