WO2014021527A1 - 광학필름 및 이를 이용한 디지털펜 시스템 - Google Patents
광학필름 및 이를 이용한 디지털펜 시스템 Download PDFInfo
- Publication number
- WO2014021527A1 WO2014021527A1 PCT/KR2013/000878 KR2013000878W WO2014021527A1 WO 2014021527 A1 WO2014021527 A1 WO 2014021527A1 KR 2013000878 W KR2013000878 W KR 2013000878W WO 2014021527 A1 WO2014021527 A1 WO 2014021527A1
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- WIPO (PCT)
- Prior art keywords
- layer
- microstructure
- dot pattern
- optical film
- film
- Prior art date
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- 239000012788 optical film Substances 0.000 title claims abstract description 59
- 239000010410 layer Substances 0.000 claims abstract description 163
- 239000010408 film Substances 0.000 claims abstract description 100
- 239000011247 coating layer Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 14
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 8
- 239000011253 protective coating Substances 0.000 claims description 8
- -1 polyethylene terephthalate Polymers 0.000 description 27
- 238000010586 diagram Methods 0.000 description 21
- 239000000853 adhesive Substances 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 13
- 239000011521 glass Substances 0.000 description 13
- 239000004698 Polyethylene Substances 0.000 description 12
- 239000004743 Polypropylene Substances 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 12
- 229920001707 polybutylene terephthalate Polymers 0.000 description 12
- 229920000573 polyethylene Polymers 0.000 description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
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- 230000006870 function Effects 0.000 description 11
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- 239000004926 polymethyl methacrylate Substances 0.000 description 10
- 239000011324 bead Substances 0.000 description 7
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- 239000000203 mixture Substances 0.000 description 6
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- 239000004417 polycarbonate Substances 0.000 description 6
- 229920000515 polycarbonate Polymers 0.000 description 6
- 239000011112 polyethylene naphthalate Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000012780 transparent material Substances 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
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- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 3
- 229910052735 hafnium Inorganic materials 0.000 description 3
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- 229910052738 indium Inorganic materials 0.000 description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- LKKPNUDVOYAOBB-UHFFFAOYSA-N naphthalocyanine Chemical compound N1C(N=C2C3=CC4=CC=CC=C4C=C3C(N=C3C4=CC5=CC=CC=C5C=C4C(=N4)N3)=N2)=C(C=C2C(C=CC=C2)=C2)C2=C1N=C1C2=CC3=CC=CC=C3C=C2C4=N1 LKKPNUDVOYAOBB-UHFFFAOYSA-N 0.000 description 3
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 3
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- 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
-
- 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
Definitions
- the present invention relates to an optical film and a digital pen system using the same , and more particularly, to a high-brightness optical film attached to a display and a digital pen system for providing location information using the same.
- the digital pen system is a new concept of a combination of analog and digital.
- the pen When you write letters on paper like a normal pen, the pen is stored in the pen's built-in memory and transferred to a computer in the form of an image file. It is a pen made to do it. Documents written with a normal pen can also be scanned with a scanner and saved in the form of an image file.However, documents written with an electronic pen do not require a scanning process and can be easily managed through a separate program. It is an advantage.
- digital pens could only be used with computers. In other words, to use the digital pen, the computer must be turned on at all times. Moreover, when saving to a computer, it was difficult to see the contents accurately because the resolution of the image file was low.
- a touch screen method for detecting information or a technology for detecting a moving trace of a digital pen by using a sensor mounted on the outside is used.
- the dot pattern-implemented transparent film should have the property of scattering infrared rays.
- a transparent film scatters infrared rays and also scatters visible light, thereby distorting an image when it is attached to a display and also hindering visibility and blurring.
- a technology for detecting a touch position of a digital pen using the infrared sensor mounted on the digital pen and displaying graphic information on the detected position is disclosed in addition to Korean Patent Publication No. 10-2010-0134331.
- the digital pen is made of a material capable of reflecting infrared rays and visible light in order to recognize the mark on the optical film. There is.
- the technical problem to be achieved is an optical film and a digital pen system using the same to minimize the impact on the display function of the display by transmitting the visible light while maintaining the characteristics of scattering infrared rays attached to the display using the digital pen To provide.
- a film layer including a microstructure, a coating layer coated on the microstructure and having an infrared scattering characteristic, and laminated on the upper or lower portion of the film layer and the refractive index within the predetermined error range It provides an optical film comprising this matching layer.
- the coating layer is formed by cross-laminating at least two material layers having different refractive indices, and the refractive index of the coating layer may be determined by the refractive indices of the two or more material layers.
- the coating layer may be configured to include a material that reflects infrared rays of a wavelength of 800nm ⁇ 1500nm.
- One surface of the matching layer and the film layer may be in contact with each other, and an adhesive may be applied to at least one other surface of the matching layer and the film layer.
- a dot pattern absorbing infrared rays may be printed on the film layer or the matching layer.
- It is formed on the dot pattern may further comprise a protective coating layer for protecting the dot pattern.
- the dot pattern may be printed and may further include a dot pattern layer stacked on the microstructure.
- It may be formed on the dot pattern layer and further comprises a protective coating layer for protecting the dot pattern.
- the microstructures may have any one of hemispherical, inverse hemispherical, prism and triangular pyramid shapes.
- the microstructures may be partially formed along the dot pattern.
- the coating layer may be partially formed along the microstructure.
- the microstructure may be formed at a portion where the mark of the dot pattern is not formed.
- the coating layer may be partially formed along the microstructure.
- a display disposed on the display, the film layer on which the microstructures are formed, the coating layer coated on the microstructures, and having an infrared scattering property, and stacked on or under the film layer, and having a predetermined error
- a matching layer having a refractive index matched with the film layer within a range, wherein the microstructure or the matching layer recognizes the optical film and a dot pattern printed with a dot pattern absorbing infrared rays, and displays graphic information on the display. It provides a digital pen system comprising a digital pen for transmitting a signal for display.
- optical film of the present invention and the digital pen system using the same may be attached to a display on which a digital pen is used to maintain infrared ray scattering characteristics, and transmit visible light to minimize the influence on the display function of the display.
- FIG. 1 is a block diagram of an optical film according to an embodiment of the present invention.
- Figure 2 is a schematic diagram for explaining the refractive index matching of the optical film according to an embodiment of the present invention
- FIG. 3 is a block diagram of an optical film according to another embodiment of the present invention.
- FIG. 4 is a configuration diagram of an optical film according to another embodiment of the present invention.
- FIG. 5 is a configuration diagram of an optical film according to another embodiment of the present invention.
- FIG. 6 is a configuration diagram of an optical film according to another embodiment of the present invention.
- FIG. 7 is a perspective view of an optical film according to another embodiment of the present invention.
- FIG. 8 is a configuration diagram of an optical film according to another embodiment of the present invention.
- FIG. 9 is a configuration diagram of an optical film according to another embodiment of the present invention.
- FIG. 10 is a perspective view of an optical film according to another embodiment of the present invention.
- FIG. 11 is a conceptual diagram of a digital pen system according to an embodiment of the present invention.
- FIG. 13 is a schematic diagram of a dot pattern according to an embodiment of the present invention.
- ordinal numbers such as second and first
- first and second components may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.
- second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.
- FIG. 1 is a block diagram of an optical film according to an embodiment of the present invention.
- the optical film according to an embodiment of the present invention is formed on the upper surface of the film layer 10, the film layer 10 including the microstructure 11 on the upper surface and has an infrared scattering characteristic
- the coating layer 20 and the film layer 10 are stacked on top of the matching layer 30 and the refractive index of the matching layer 30 and the dot pattern 40 formed on the matching layer 30 by an error within a predetermined range. It may be configured to include).
- the film layer 10 may be made of a transparent material for transmitting light incident on the optical film.
- the film layer 10 is, for example, glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), copolyethylene naphthalate (co-PEN), polystyrene (PS), polymethyl meta It may be composed of at least one material selected from the group consisting of acrylate (PMMA), polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like.
- the microstructure 11 can be formed on the upper surface of the film layer 10.
- the microstructure 11 may be formed by structuring the upper surface of the film layer 10, or using a pressure-sensitive adhesive to deposit a separate structure such as glass beads on the upper surface of the film layer 10. Can be formed in a manner.
- the microstructure 11 can have any one or similar shape among hemispherical, inverse hemispherical, prismatic and triangular pyramidal shapes.
- the microstructure 11 may be formed to have a light-directing characteristic. Light directing properties of the microstructure 11 may include, for example, rotational, diffusive, refractive or reflective properties.
- the coating layer 20 having the same shape as the microstructure 11 may be formed on the microstructure 11.
- the coating layer 20 may have an infrared reflecting function by being formed by cross-laminating transparent dielectric layer regions.
- the transparent dielectric film material may be made of a dielectric material including at least one of oxides of zinc, tin, indium, bismuth, titanium, hafnium, zirconium and alloys thereof or silicon nitride and silicon oxynitride.
- the coating layer 20 reflects or scatters infrared rays having a wavelength of 800 nm to 1500 nm at a high rate due to the cross-lamination of the transparent dielectric layer, but transmits visible light.
- the refractive index of the film layer 10 constituting the microstructure 11 and the refractive index of the matching layer 30 to be described below may be matched within a certain error range. Referring to FIG. 2, when the refractive index of the film layer 10 constituting the microstructure 11 is n 1 and the refractive index of the matching layer 30 is n 2 , n 1 and n 2 are similar within a certain error range. Or have the same value.
- the visible light incident to the optical film passes through the matching layer 30 and the film layer 10 together with a material having the same refractive index, thereby minimizing the visible light scattering rate at the surface.
- the infrared rays incident together with the visible light are reflected and scattered due to the shape characteristics of the coating layer 20 and the microstructure, they may provide a function for pattern recognition of the digital pen while minimizing distortion of the display image and improving visibility. Will be.
- the matching layer 30 is stacked on top of the film layer 10 on which the microstructures 11 are formed and has the same refractive index at an error within a predetermined range as the film layer 10 constituting the microstructures 11.
- Matching layer 30 is glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), copolyethylene naphthalate (co-PEN), polystyrene (PS), polymethyl methacrylate (PMMA) ), Polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like may be made of at least one or more materials.
- the pressure-sensitive adhesive may be formed of a silicone or acrylic pressure-sensitive adhesive composition and may be formed by being applied to the other surface of the film layer 10 on which the microstructures 11 are formed, but some materials forming the film layer 10 on which the microstructures 11 are formed. Of course, it may be formed integrally by. In addition, it is also possible to facilitate the operation of attaching the optical film to the display in the form of a film coated with an adhesive on both sides.
- the dot pattern 40 may be formed on the matching layer 30 and has an excellent transmittance of visible light and absorbs ink or infrared and visible light that can selectively absorb only infrared light, but minimizes the influence on the display image. It can be formed in a concentration that can be.
- the infrared region may be divided into near infrared rays, mid infrared rays, and far infrared rays at about 700 to 10,000 nm, and the dot pattern 40 may absorb a near infrared region having about 750 to 1300 nm.
- the dot pattern 40 is, for example, phthalocyanine-based compound, infrared ray-absorbing compound, naphthalocyanine-based compound, aluminum compound, and the like by mixing a UV-curable resin and a curing agent to produce a resin compound, the transparent material listed above It can be formed by printing on the film layer 10 or the matching layer 30 of the.
- the dot pattern 40 may be stacked in the form of a dot pattern 40 layer on top of the matching layer 30 and the composition and function are the same as described above.
- FIG. 3 is a block diagram of an optical film according to another embodiment of the present invention.
- the optical film according to another embodiment of the present invention is formed on the upper surface of the film layer 10, the film layer 10, the microstructure 11 is formed on the upper surface of the coating layer 20, the film layer having infrared scattering characteristics
- the film layer on which the microstructure 11 is formed and the refractive index is matched, the dot pattern 40 and the dot pattern formed on the matching layer 30.
- a protective coating layer 50 for protecting the 40 is included.
- the film layer 10 may be made of a transparent material for transmitting light incident on the optical film.
- the film layer 10 may include glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), copolyethylene naphthalate (co-PEN), polystyrene (PS), and polymethylmethacrylate. It may be composed of at least one material selected from the group consisting of acrylate (PMMA), polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like.
- PMMA acrylate
- PBT polybutylene terephthalate
- PP polypropylene
- PE polyethylene
- the microstructure 11 can be formed on the upper surface of the film layer 10.
- the microstructure 11 may be formed by structuring the upper surface of the film layer 10, or may be formed by stacking a separate structure such as glass beads on the upper surface of the film layer 10 using an adhesive. Can be.
- the microstructure 11 can have any one or similar shape among hemispherical, inverse hemispherical, prismatic and triangular pyramidal shapes.
- the microstructure 11 may be formed to have light directing characteristics. Light directing properties of the microstructure 11 may include, for example, rotational, diffusive, refractive or reflective properties.
- the coating layer 20 having the same shape as the microstructure 11 may be formed on the microstructure 11.
- the coating layer 20 may be formed by cross-laminating transparent dielectric layer regions to have an infrared reflecting function.
- the transparent dielectric film material may be made of a dielectric material including at least one of oxides of zinc, tin, indium, bismuth, titanium, hafnium, zirconium and alloys thereof or silicon nitride and silicon oxynitride.
- the coating layer 20 reflects or scatters infrared rays having a wavelength of 800 nm to 1500 nm at a high rate due to the cross-lamination of the transparent dielectric layer, but transmits visible light.
- the refractive index of the film layer 10 constituting the microstructure 11 and the refractive index of the matching layer 30 to be described below may be matched within a certain error range. Referring to FIG. 2, when the refractive index of the film layer 10 constituting the microstructure 11 is n 1 and the refractive index of the matching layer 30 is n 2 , n 1 and n 2 are similar within a certain error range. Or have the same value.
- the matching layer 30 is stacked on top of the film layer 10 on which the microstructures 11 are formed and has the same refractive index at an error within a predetermined range as the film layer 10 constituting the microstructures 11.
- Matching layer 30 is glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), copolyethylene naphthalate (co-PEN), polystyrene (PS), polymethyl methacrylate (PMMA) ), Polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like may be made of at least one or more materials.
- the pressure-sensitive adhesive may be formed of a silicone or acrylic pressure-sensitive adhesive composition and may be formed by being applied to one surface of the film layer 10 on which the microstructures 11 are formed, but some materials forming the film layer 10 on which the microstructures 11 are formed. Of course, it may be formed integrally by. In addition, it is also possible to facilitate the operation of attaching the optical film to the display in the form of a film coated with an adhesive on both sides.
- the dot pattern 40 may be formed on the matching layer 30 and has an excellent transmittance of visible light, and may be an ink material capable of selectively absorbing only infrared light, or absorbing infrared light and visible light, but affecting the display image. It can be formed at a concentration that can be minimized.
- the infrared region may be divided into near infrared rays, mid infrared rays, and far infrared rays at about 700 to 10,000 nm, and the dot pattern 40 may absorb a near infrared region having about 750 to 1300 nm.
- the dot pattern 40 is, for example, phthalocyanine-based compound, infrared ray-absorbing compound, naphthalocyanine-based compound, aluminum compound, and the like by mixing a UV-curable resin and a curing agent to produce a resin compound, the transparent material listed above It can be formed by printing on the film layer 10 or the matching layer 30 of the.
- the dot pattern 40 may be stacked in the form of a dot pattern 40 layer on top of the matching layer 30 and the composition and function are the same as described above.
- the protective coating layer 50 may be formed on the dot pattern 40 or stacked on the dot pattern 40 layer to protect the dot pattern 40.
- the protective film a known general protective film may be used, but it is preferable that the protective film is made of a material that minimizes display image distortion and does not impair visibility at the same time.
- FIG. 4 is a block diagram of an optical film according to another embodiment of the present invention.
- Optical film according to another embodiment of the present invention is laminated on the upper surface of the matching layer 30, the matching layer 30 and the matching layer of the refractive index matching the film layer 10 constituting the microstructure 11 with an error within a predetermined range,
- a protective coating layer 50 for protecting the dot pattern 40 is included.
- the matching layer 30 has the same refractive index as the film layer 10 constituting the microstructure 11 in an error within a predetermined range.
- Matching layer 30 is glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), copolyethylene naphthalate (co-PEN), polystyrene (PS), polymethyl methacrylate (PMMA) ), Polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like may be made of at least one or more materials.
- the upper surface of the matching layer 30 is in direct contact with the film layer 10 on which the microstructures 11 are formed, and an adhesive may be applied to the other surface.
- the pressure-sensitive adhesive may be made of a silicone or acrylic pressure-sensitive adhesive composition and may be applied to one surface of the matching layer 30, but may be formed integrally by some materials forming the matching layer 30.
- the film layer 10 may be made of a transparent material for transmitting light incident on the optical film.
- the film layer 10 is, for example, glass, polyethylene terephthalate (PET), polycarbonate (PC), polyethylene naphthalate (PEN), copolyethylene naphthalate (co-PEN), polystyrene (PS), polymethyl meta It may be composed of at least one material selected from the group consisting of acrylate (PMMA), polybutylene terephthalate (PBT), polypropylene (PP), polyethylene (PE) and the like.
- the film layer 10 is laminated on top of the matching layer 30, and the microstructure 11 can be formed on the lower surface.
- the microstructure 11 may be formed by structuring the lower surface of the film layer 10 or may be formed by stacking a separate structure such as glass beads on the lower surface of the film layer 10 using an adhesive. Can be.
- the microstructure 11 can take any one or more of the hemispherical, inverse hemispherical, prism and triangular pyramid shapes.
- the microstructure 11 may be formed to have light directing characteristics. Light directing properties of the microstructure 11 may include, for example, rotational, diffusive, refractive or reflective properties.
- the coating layer 20 having the same shape as the microstructure 11 may be formed on the microstructure 11.
- the coating layer 20 may have an infrared reflecting function by being formed by cross-laminating transparent dielectric layer regions.
- the transparent dielectric film material may be made of a dielectric material including at least one of oxides of zinc, tin, indium, bismuth, titanium, hafnium, zirconium and alloys thereof or silicon nitride and silicon oxynitride.
- the coating layer 20 reflects or scatters infrared rays having a wavelength of 800 nm to 1500 nm at a high rate due to the cross-lamination of the transparent dielectric layer, but transmits visible light.
- the refractive index of the film layer 10 forming the microstructure 11 and the refractive index of the matching layer 30 to be described below may be matched within a certain error range. Referring to FIG. 2, when the refractive index of the film layer 10 constituting the microstructure 11 is n 1 and the refractive index of the matching layer 30 is n 2 , n 1 and n 2 are similar within a certain error range. Or have the same value.
- the dot pattern 40 may be formed on the film layer 10 and has an excellent transmittance of visible light, and may be an ink material capable of selectively absorbing only infrared light or absorb infrared light and visible light, but may affect the display image. It can be formed at a concentration that can be minimized.
- the infrared region may be divided into near infrared rays, mid infrared rays, and far infrared rays at about 700 to 10,000 nm, and the dot pattern 40 may absorb a near infrared region having about 750 to 1300 nm.
- the dot pattern 40 is, for example, phthalocyanine-based compound, infrared ray-absorbing compound, naphthalocyanine-based compound, aluminum compound, and the like by mixing a UV-curable resin and a curing agent to produce a resin compound, the transparent material listed above It can be formed by printing on the film layer 10 or the matching layer 30 of the.
- the dot pattern 40 may be stacked in the form of a dot pattern 40 layer on top of the film layer 10 and the composition and function are the same as described above.
- the protective coating layer 50 may be formed on the dot pattern 40 or stacked on the dot pattern 40 layer to protect the dot pattern 40.
- the protective film a known general protective film may be used, but it is preferable that the protective film is made of a material that minimizes display image distortion and does not impair visibility at the same time.
- FIG. 5 is a block diagram of an optical film according to another embodiment of the present invention.
- the microstructure 11 can be formed on the surface of the film layer 10.
- the microstructure 11 can be formed by structuring the surface of the film layer 10 along the dot pattern 40.
- the microstructure 11 may be formed by stacking a separate structure such as glass beads partially structured along the dot pattern 40 on the surface of the film layer 10 using an adhesive.
- the microstructure 11 can take any one or more of the hemispherical, inverse hemispherical, prism and triangular pyramid shapes.
- the microstructure 11 may be formed to have light directing characteristics. Light directing properties of the microstructure 11 may include, for example, rotational, diffusive, refractive or reflective properties.
- the coating layer 20 having the same shape as the microstructure 11 may be formed on the microstructure 11.
- the coating layer 20 may be formed by cross-laminating transparent dielectric layer regions, and may be partially formed on the surface of the film layer 10 along the microstructure 11.
- FIG. 6 is a block diagram of an optical film according to another embodiment of the present invention.
- the microstructure 11 is formed by partially structuring the surface of the film layer 10 along the dot pattern 40, or by using an adhesive to the surface of the film layer 10.
- the dot pattern 40 may be formed by stacking a separate structure such as a glass bead partially structured along the dot pattern 40.
- the coating layer 20 is formed on the entire surface of the film layer 10, which is due to problems such as problems and precision that may be caused in the manufacturing process.
- FIG. 7 is a perspective view of an optical film according to another embodiment of the present invention.
- the microstructures 11 are formed along the dot pattern 40, and the microstructures 11 are formed at densely spaced intervals as compared to the dot pattern 40.
- FIG. 8 is a block diagram of an optical film according to another embodiment of the present invention.
- the microstructure 11 can be formed on the upper surface of the film layer 10.
- the microstructure 11 may be formed by partially structuring the surface of the film layer 10 in which the mark 41 of the dot pattern 40 is not formed.
- the microstructure 11 is formed by laminating a separate structure such as a glass bead partially structured on the surface of the film layer 10 in which the mark 41 of the dot pattern 40 is not formed by using an adhesive. can do.
- the microstructure 11 can have any one of hemispherical, inverse hemispherical, prismatic and triangular pyramid shapes or similar shapes.
- the microstructure 11 may be integrally formed with the film layer 10 to have light directing characteristics. Light directing properties of the microstructure 11 may include, for example, rotational, diffusive, refractive or reflective properties.
- the coating layer 20 having the same shape as the microstructure 11 may be formed on the microstructure 11.
- the coating layer 20 may be formed by cross-laminating transparent dielectric layer regions, and may be partially formed on the surface of the film layer 10 along the microstructure 11.
- FIG. 9 is a block diagram of an optical film according to another embodiment of the present invention.
- the microstructure 11 is formed by partially structuring the surface of the film layer 10 on which the mark 41 of the dot pattern 40 is not formed, or by using an adhesive.
- the mark 41 of the dot pattern 40 may be formed by stacking a separate structure such as a glass bead partially structured along the surface of the film layer 10 on which the mark 41 is not formed.
- the coating layer 20 is formed on the entire surface of the film layer 10, which is due to problems such as problems and precision that may be caused in the manufacturing process.
- FIG. 10 is a perspective view of an optical film according to another embodiment of the present invention.
- the microstructure 11 is formed along a portion where the mark 41 of the dot pattern 40 is not formed, and the microstructure 11 has a tighter spacing compared to the dot pattern 40. It can be seen that the formed.
- FIG. 11 is a conceptual diagram of a digital pen system according to an embodiment of the present invention.
- Digital pen system is disposed on the display 100, the display 100, the microstructure 11 is formed on the film layer 10 and the microstructure 11 is formed and infrared scattering
- the microstructure 11 or the matching layer includes a coating layer having a characteristic and a matching layer laminated on the upper or lower portion of the film layer 10 and the refractive index is matched with the microstructure 11 within a predetermined error range.
- the digital pen 300 that recognizes the optical film 200 and the dot pattern 40 is printed on the dot pattern 40 that absorbs infrared rays and transmits a signal for displaying the graphic information on the display 100 It includes.
- the display 100 may be a transmissive display or a reflective display.
- the digital pen 300 detects the position information of the dot pattern 40 by using visible light and infrared rays emitted from the backlight unit, or does not emit or emit the infrared light source in the transmissive display.
- an infrared light source (not shown) mounted on the digital pen 300 itself may be used.
- the reflective display since the external light source is reflected toward the front side of the display surface, information may be displayed to the outside without the backlight unit, and the digital pen 300 may detect the location information by using the reflected light.
- the digital pen 300 may be in the form of a general pen, and an infrared sensor (not shown) may be provided at a portion where the nib is formed.
- the infrared sensor may recognize the dot pattern 40 formed on the optical film 200.
- the digital pen 300 may obtain a pattern value according to the dot pattern 40 recognized by the infrared sensor and calculate position information in the optical film 200.
- FIG. 12 is an explanatory diagram of a dot pattern according to an embodiment of the present invention
- FIG. 13 is a schematic diagram of a dot pattern according to an embodiment of the present invention.
- the optical film 200 is disposed on the display 100 and has a dot pattern 40 for providing position information by using reflected light.
- the dot pattern 40 includes a virtual grid line 42 and a plurality of marks 41, and each mark 41 has a constant distance around the intersection point of the virtual grid line 42. Can be formed.
- Each mark 41 may provide the position information by a pattern value determined according to a position formed around an intersection of the virtual grid lines 42.
- the marks 41 may be formed at regular intervals around the intersections of the imaginary grid lines 42 and have respective mark values, and the mark values may be composed of a combination of at least two or more different numbers.
- the mark 41 may have various shapes such as a circle, an ellipse, a polygon, a straight line, and one type of mark is preferably used for one optical film.
- the mark 41 may exist at four positions according to the relationship with the intersection point of the imaginary grid line 42, and the mark 41 is positioned at the right side of the intersection as a. If the mark value is "1”, if it is located at the top as b, if the mark value is "2", if it is located at the left as c By indicating the value as "4", the positional information can be provided in accordance with the position of the mark 41 around the intersection of the virtual grid lines 42.
- each mark value may be represented by arbitrary coordinates in a manner that is separated into x and y coordinates, and the position information may be provided from a mark value represented by coordinates.
- the virtual grid lines 42 may be formed horizontally and vertically at regular intervals.
- the distance between the grid lines 42 may be formed between 250 and 300 ⁇ m, and the mark 41 may be formed at a point spaced 1/4 or 1/8 from the intersection point of the virtual grid line 42. have.
- the mark 41 may be formed by linking two or more marks around the intersection point of the virtual grid line 42.
- the digital pen 300 is, for example, in the infrared sensor
- the position information according to each mark value may be calculated and the absolute position on the optical film 200 may be determined using the marks. .
- FIGS. 12 and 13 illustrate an example of calculating position information on the optical film 200 by recognizing the dot pattern 40 including the virtual grid lines 42 and the marks 41, but the optical film ( It will be apparent that the optical film 200 of the present invention can be applied to all kinds of digital pen systems capable of calculating position information using any pattern formed on the substrate 200.
- a device capable of performing various functions such as a device, a microphone, and a speaker for other communication means may be built in the digital pen 300, and operations may be controlled by an MCU built in the digital pen 300.
- the nib portion of the digital pen 300 includes ink to perform a general pen function, and an optical pattern in which an information pattern is formed on a notebook, a board, or an electronic board that can display information by reflecting an external light source.
- a film can be attached and used.
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Abstract
Description
Claims (14)
- 미세구조물을 포함하는 필름층;상기 미세구조물상에 코팅되며 적외선 산란 특성을 갖는 코팅층; 및상기 필름층의 상부 또는 하부에 적층되며 소정의 오차 범위내에서 상기 필름층과 굴절률이 정합되는 정합층을 포함하는 광학필름.
- 제 1 항에 있어서,상기 코팅층은 상이한 굴절률을 가지는 적어도 2개 이상의 물질층이 교차 적층되어 형성되며, 상기 코팅층의 굴절률은 상기 2개 이상의 물질층의 굴절률에 의하여 결정되는 광학필름.
- 제 1 항에 있어서,상기 코팅층은 파장 800nm ~ 1500nm의 적외선을 반사시키는 기능을 포함하는 광학필름.
- 제 1 항에 있어서,상기 정합층 및 필름층의 일면은 상호 접촉하며, 상기 정합층 및 필름층 중 적어도 하나 이상의 타면에는 점착제가 도포되어 있는 광학필름.
- 제 1 항 내지 제4항 중 어느 한 항에 있어서,상기 필름층 또는 상기 정합층에는 적외선을 흡수하는 닷패턴이 인쇄되어 있는 광학필름.
- 제 5 항에 있어서,상기 닷패턴상에 형성되며 상기 닷패턴을 보호하기 위한 보호코팅층을 더 포함하는 광학필름.
- 제 1 내지 제4항 중 어느 한 항에 있어서,닷패턴이 인쇄되어 있으며 상기 미세구조물 또는 상기 정합층에 적층되는 닷패턴층을 더 포함하는 광학필름.
- 제 7 항에 있어서,상기 닷패턴층상에 형성되며 상기 닷패턴을 보호하기 위한 보호코팅층을 더 포함하는 광학필름.
- 제 1 항에 있어서,상기 미세구조물은 반구형, 역반구형, 프리즘 및 삼각뿔 형태 중 어느 하나의 형상을 갖는 광학필름.
- 제 1항 있어서,상기 미세구조물은 닷패턴을 따라 부분적으로 형성되어 있는 광학필름.
- 제 10 항에 있어서,상기 코팅층은 상기 미세구조물을 따라 부분적으로 형성되어 있는 광학필름.
- 제 1항에 있어서,상기 미세구조물은 닷패턴의 마크가 형성되지 않은 부분에 형성되어 있는 광학필름.
- 제 12항에 있어서,상기 코팅층은 상기 미세구조물을 따라 부분적으로 형성되어 있는 광학필름.
- 디스플레이;상기 디스플레이상에 배치되며, 미세구조물을 포함하는 필름층, 상기 미세구조물상에 코팅되고 적외선 산란 특성을 갖는 코팅층 및 상기 필름층의 상부 또는 하부에 적층되며 소정의 오차 범위내에서 상기 미세구조물과 굴절률이 정합되는 정합층을 포함하되 상기 미세구조물 또는 상기 정합층에는 적외선을 흡수하는 닷패턴이 인쇄되어있는 광학필름 및상기 닷패턴을 인지하여 상기 디스플레이상에 그래픽 정보를 표시하기 위한 신호를 전송하는 디지털펜을 포함하는 디지털펜 시스템.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US14/418,082 US10078161B2 (en) | 2012-07-30 | 2013-02-04 | Optical film and digital pen system using the same |
CN201380050920.8A CN104662450B (zh) | 2012-07-30 | 2013-02-04 | 光学薄膜及利用光学薄膜的电子笔系统 |
EP13825651.6A EP2881767B1 (en) | 2012-07-30 | 2013-02-04 | Optical film and digital pen system using the same |
JP2015525314A JP6141432B2 (ja) | 2012-07-30 | 2013-02-04 | 光学フィルム及びこれを利用したデジタルペンシステム |
PL13825651T PL2881767T3 (pl) | 2012-07-30 | 2013-02-04 | Folia optyczna i używający jej układ pióra cyfrowego |
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KR10-2012-0083174 | 2012-07-30 | ||
KR1020120083174A KR101431686B1 (ko) | 2012-07-30 | 2012-07-30 | 광학필름 및 이를 이용한 디지털펜 시스템 |
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US (1) | US10078161B2 (ko) |
EP (1) | EP2881767B1 (ko) |
JP (1) | JP6141432B2 (ko) |
KR (1) | KR101431686B1 (ko) |
CN (1) | CN104662450B (ko) |
PL (1) | PL2881767T3 (ko) |
WO (1) | WO2014021527A1 (ko) |
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US10078161B2 (en) | 2012-07-30 | 2018-09-18 | Pen Generations Inc. | Optical film and digital pen system using the same |
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KR20180032973A (ko) * | 2016-09-23 | 2018-04-02 | 주식회사 쏠리드에듀 | 전자칠판 및 이를 포함하는 전자칠판 시스템 |
US10838551B2 (en) * | 2017-02-08 | 2020-11-17 | Hewlett-Packard Development Company, L.P. | Calibration of displays |
US10930177B2 (en) * | 2018-05-16 | 2021-02-23 | Leapfrog Enterprises, Inc. | Interactive globe |
KR20220165865A (ko) | 2021-06-08 | 2022-12-16 | 삼성디스플레이 주식회사 | 표시 장치 및 이를 포함하는 터치 입력 시스템 |
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Also Published As
Publication number | Publication date |
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PL2881767T3 (pl) | 2019-09-30 |
JP2015530642A (ja) | 2015-10-15 |
US20150198751A1 (en) | 2015-07-16 |
EP2881767A1 (en) | 2015-06-10 |
JP6141432B2 (ja) | 2017-06-07 |
EP2881767B1 (en) | 2019-04-10 |
CN104662450B (zh) | 2017-09-08 |
KR20140016537A (ko) | 2014-02-10 |
CN104662450A (zh) | 2015-05-27 |
KR101431686B1 (ko) | 2014-08-20 |
US10078161B2 (en) | 2018-09-18 |
EP2881767A4 (en) | 2016-03-09 |
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