KR101856837B1 - Optical film and pointing display device - Google Patents
Optical film and pointing display device Download PDFInfo
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- KR101856837B1 KR101856837B1 KR1020160007612A KR20160007612A KR101856837B1 KR 101856837 B1 KR101856837 B1 KR 101856837B1 KR 1020160007612 A KR1020160007612 A KR 1020160007612A KR 20160007612 A KR20160007612 A KR 20160007612A KR 101856837 B1 KR101856837 B1 KR 101856837B1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/0009—Materials therefor
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
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- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Human Computer Interaction (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
Abstract
The present invention relates to an optical film, a polarizing plate including the same, a liquid crystal display, and a pointing display. INDUSTRIAL APPLICABILITY The pointing display device of the present invention is advantageous in that it is easy to manufacture and a plurality of light sources can be used. Furthermore, it is characterized by having a function of continuously displaying not only an indication but also an important part by highlighting.
Description
The present invention relates to an optical film, a polarizing plate including the same, a liquid crystal display, and a pointing display.
A pointing device such as a mouse was used to point to the desired coordinates on the display device. A conventional pointing device is one of computer input means, which selects a position of the pointer while moving a pointer on a screen of a computer monitor, such as a mouse used as an input means in a graphical user interface (GUI) environment, The devices that can be called are collectively called.
A typical example of the pointing device is a ball mouse widely used in a desktop computer and a track ball used in a notebook computer. The basic principle of a ball mouse or a track ball is similar to that of a user's hand, which rotates the ball by friction with an external object, detects vertical and horizontal movement of the ball, converts the signal into an electrical signal, And controls the position of the cursor displayed on the screen.
Korean Patent Laid-Open Publication No. 2004-0014763 discloses a pointing device using a laser light source, a reflector reflecting the light, and a camera system. However, it is impossible to simultaneously point a plurality of points, and a separate camera and video Expensive equipment such as a processing program was required.
Accordingly, there is a demand for a pointing display device capable of displaying a position in a display device that can be simultaneously pointed at a plurality of times, and which is easy to manufacture, and a film applicable to such a pointing display device. Furthermore, it is required to develop a pointing display device having a function capable of continuously displaying an important part such as highlighting and a film applicable to such a pointing display device. However, Technology is not presented.
It is an object of the present invention to provide a pointing display device which is easy to manufacture, utilizes a plurality of light sources, and has a function of continuously displaying not only an indicating function but also an important part by highlighting.
In order to solve the above problems, the present invention provides an optical film having a longer light emission time than the first material, wherein the second material includes a first material and a second material different in wavelength band from each other.
In one embodiment, the second material may have a luminescence time of at least two times the first material.
In another embodiment, the emission time of the first material is less than 1 second and the emission time of the second material is more than 3 seconds.
In another embodiment, the first substance may be a substance sensitive to ultraviolet rays, infrared rays or visible rays, and the second substance may be a substance sensitive to ultraviolet rays, infrared rays or visible rays.
In another embodiment, a material is an infrared sensitive material, such as a two-photon absorption material, a second harmonic generation material, an upconversion material by upconversion state absorption, an upconversion by sensitized energy transfer, an upconversion by cooperative luminescence, and an upconversion by photon avalanche. And the like.
In another embodiment, the second material is a substance sensitive to ultraviolet rays, and may be a phosphor doped with an activator Eu and a research activator Dy in MAl 2 O 4 (M = Ba, Sr, Ca, or Mg) have.
In another embodiment, the film is coated with a coating liquid containing a substance sensitive to ultraviolet rays, infrared rays or visible rays as a first substance, a substance sensitive to ultraviolet rays, infrared rays or visible rays as a second substance, and a coating agent, The sum of the weights of the first material and the second material may be 0.2 to 10% by weight based on the total weight of the coating liquid.
The present invention also provides a polarizing plate comprising the film.
In addition, the present invention provides a liquid crystal display device in which an electromagnetic wave reaction unit including the film is attached to the front side.
In one embodiment, the electromagnetic wave reaction part may be an infrared ray and ultraviolet ray reaction part.
The present invention also relates to an electromagnetic wave reaction unit comprising a film; And a light source capable of emitting an electromagnetic wave.
One embodiment includes an infrared and ultraviolet ray reaction unit comprising the film; And an ultraviolet light source capable of emitting an ultraviolet laser and an infrared light source capable of emitting an infrared laser.
Another embodiment further comprises a substrate portion having an electromagnetic wave reaction portion, wherein the substrate portion is made of at least one material selected from the group consisting of polyvinyl acetate, polypropylene, triacetylcellulose, polyacrylic resin, polyethylene terephthalate and polyolefin resin Lt; / RTI >
INDUSTRIAL APPLICABILITY The pointing display device of the present invention is advantageous in that it is easy to manufacture and a plurality of light sources can be used. Furthermore, it is characterized by having a function of continuously displaying not only an indication but also an important part by highlighting.
The present invention relates to an optical film, a polarizing plate including the same, a liquid crystal display, and a pointing display using the same.
Hereinafter, the present invention will be described in detail.
The present invention provides a first material and a second material having different wavelengths to each other, and the second material provides an optical film having a longer light emission time than the first material.
In this specification, the light emission time means the time required from the instant when the quantity of light emitted per hour is maximum to the moment when the quantity of light is reduced to a certain rate or less. The ratio at this time can be arbitrarily determined according to the visual sensitivity of the person who receives the light amount at the time of maximum light emission. For example, in the case where the light emitted at the moment of maximum light intensity can be felt relatively bright due to the viewer's feeling, the light emission time can be defined as the light emission time until the light intensity decreases to 1% The light emission time can be set up to the moment when the light amount is halved. That is, it is preferable to select the wavelength in consideration of the visual acceptability of the light emitted between the half and 1% levels. For example, when the receptive sensitivity of the photocells is low (because the photocells can distinguish the change in brightness only when there is a large difference in the maximum brightness), the time to reach a ratio of up to 1% can be used as a reference, The time to reach the ratio up to 50% can be used as a reference. At this time, the reference wavelength is based on a range recognized by a general observer in consideration of the water solubility of the photocell, among the spectrum of the entire light emission. However, this refers to an example of photodetection sensitivity of photoperiod, and is not particularly limited to the ratio specified in the above case. In addition, when the time from the moment of irradiation of the incident light causing the light emission to the moment when the quantity of light reaches the maximum is a short time that the visual cell can not identify, the incident moment of the incident light other than the moment . In this case, the maximum amount of light, which is a reference of the rate at which the light amount decreases, can be approximately determined based on the moment of incident light irradiation.
The second material may have a light emission time of at least two times the first material, and preferably the light emission time of the first material is less than one second and the light emission time of the second material is more than three seconds.
The first material may be used for indicating a certain position in the pointing display device as the light emission time is less than 1 second, and the second material may be continuously displayed as the light emission time exceeds 3 seconds Can be used for functions that can be.
The wavelength range of electromagnetic waves to which the first and second materials are sensitive is not particularly limited, but may be infrared, visible, or ultraviolet.
As an example, the first substance or the second substance may be a substance sensitive to infrared rays.
The material that is sensitive to infrared rays is a material that absorbs infrared rays and emits visible light, and refers to a material in which visible light is reversibly emitted by infrared rays only at a position where an infrared light source is incident. Specifically, the infrared-sensitive material may be a two-photon absorption material, a second harmonic generation material, an upconversion material by excited state absorption, Upconversion by sensitized energy transfer, upconversion by cooperative luminescence, and upconversion by photon avalanche by photon excitation. ≪ Desc / Clms Page number 2 >
The two-photon absorption means a material in which a substance simultaneously absorbs two photons, and may be a mesoionic compound, trans-4- [p- (pyrrolidinyl) styryl] -N-methylpyridinium iodide But is not limited thereto.
The second harmonic generation means a material exhibiting a nonlinear optical phenomenon in which the energy of the photons absorbed in the material is doubled and combined with a new photon. The second harmonic generation may be a chalcone derivative or the like. no.
Upconversion by excited state absorption by the excited state absorption may be Y 3 Al 5 O 12 , BaTiO 3 , ZrO 2 , Y 2 O 3 or ZBLAN doped with trivalent lanthanide ions, It is not.
The up-conversion material by the induction energy transfer (Upconversion by sensitised energy transfer) is NaYF 4, the trivalent lanthanide ions and Yb 3 + is doped with BaY 2 F 8, Y 2 O 3, Gd 2 BaZnO 5, La 2 But not limited to, BaZnO 5 , glass, or vitreceramic.
The cooperative luminescence due to the cooperative emission may be LaF 3 : Pr 3+ , but is not limited thereto.
The cooperative sensitization by the cooperative response may be, but is not limited to, SrCl 2 , Cs 3 Tb 2 Br 9 , free, or PFBS (perfluorobutanesulfonate) doped with Yb 3 + and Tb 3 + .
The photon avalanche by the photon incident may be LaCl 3 , LiYF 4 , or YAlO 3 doped with a trivalent lanthanide ion, but is not limited thereto.
In the present invention, the trivalent lanthanide ion may be Er 3 + , Tm 3 + , Ho 3 + or Pr 3 + , but is not limited thereto.
In the case of the optical film including the substance sensitive to the infrared ray, the visible ray is reversibly reflected by the infrared rays only at the position from the infrared ray source, and the color changes to recognize the pointed position coordinates. When the infrared light source is irradiated, infrared rays are absorbed and visible light is emitted to change the color. However, when the infrared light source is interrupted, the infrared light returns to the original color and may change from colorless to colored or from colored to colored by infrared rays.
As an example, the first substance or the second substance may be a substance sensitive to ultraviolet rays.
The ultraviolet-sensitive material may be a fluorescent material used in the industry, preferably a fluorescent material doped with an activator and a curing agent to a matrix crystal of a stuffed tridymite structure, Are phosphors doped with Eu and Dy, which are activators and curing agents, respectively, in the MAl 2 O 4 (M = Ba, Sr, Ca or Mg) host crystals.
In the case of an optical film including a substance sensitive to ultraviolet rays, visible light is reversibly irradiated by ultraviolet light only at a position incident from an ultraviolet light source, and the color changes to enable continuous recognition of the pointed position and its trajectory . When the ultraviolet light source is irradiated, the ultraviolet light is absorbed and the visible light is emitted to change the color. However, when the ultraviolet light source is shut off, the ultraviolet light returns to the original color after a certain period of time. . ≪ / RTI >
As an example, the first material or the second material may be a material that is sensitive to visible light.
The materials that are sensitive to the visible light may have various luminescent types for incident light of various wavelengths as shown in Table 1 below, and they may be appropriately selected according to the object of the invention.
(Excitation Wavelength)
(Lex, nm)
(Emission Wavelength)
(lem, nm)
(Quantum Efficiency)
The film of the present invention may be coated with a coating liquid containing a coating material comprising a first material, a second material and a coating agent, and preferably includes a material sensitive to infrared rays, a material sensitive to ultraviolet rays, and a coating agent It may be coated with a coating liquid, but is not particularly limited thereto. It is preferable that 0.1 to 9.9% by weight of the first substance, 0.1 to 9.9% by weight of the second substance and 90 to 99.8% by weight of the coating agent are included in the total weight of the coating liquid.
For example, if the content of the infrared-sensitive material is less than 0.1% by weight based on the total weight of the coating liquid, the visible effect by the infrared light source may be insignificant. If the content of the substance sensitive to ultraviolet rays is less than 0.1% by weight based on the total weight of the coating liquid, the visual effect by the ultraviolet light source may be insignificant. In order to improve the slight effect, the coating thickness of the coating liquid may be increased. However, if the thickness of the coating increases, curling may occur during coating and drying, which may result in difficulty in the manufacturing process.
If the content of the infrared ray-sensitive material exceeds 9.9% by weight with respect to the total weight of the coating liquid, the infrared ray-sensitive material lowers the transmittance and increases the scattering property.
If the amount of the ultraviolet-sensitive material exceeds 9.9% by weight of the total weight of the coating liquid, the ultraviolet-sensitive material lowers the transmittance and the scattering property increases, resulting in low visibility when attached to a display device.
If the sum of the weight of the substance sensitive to infrared rays and the weight of the substance sensitive to ultraviolet rays exceeds 10 wt% of the total weight of the coating liquid, the transmittance is lowered and the scattering property is increased, Lt; / RTI >
The coating liquid may further contain a fluorescent paint, a dye (for example, a diaminostilbenylsulfonic acid derivative) or a material used in a light source device (for example, a fluorescent lamp or the like) or a mixture thereof have.
In the film of the present invention, it is preferable that the coating liquid containing the first material, the second material and the coating agent is applied in a thickness of less than 15 탆, more preferably, in a thickness of 3 탆 to 7 탆. When a coating liquid is applied to a thickness of 15 占 퐉 or more, curling may occur during drying.
The coating agent to be used in the present invention may be prepared by a method used in the art, preferably a material which is blended with the first material and the second material in a specific ratio and applied to the substrate portion, have. 30 to 50 parts by weight of urethane acrylate, 15 to 20 parts by weight of pentaerythritol triacrylate, 30 to 50 parts by weight of methyl isobutyl ketone, 0.5 to 10 parts by weight of a photoinitiator and 0.1 to 10 parts by weight of a leveling agent are compounded using a stirrer , And a coating agent can be produced by filtering using a PP-type filter.
The film of the present invention may be a polyester resin such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate and polybutylene terephthalate; Cellulose-based resins such as diacetylcellulose and triacetylcellulose; Polycarbonate resin; Acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene resins such as polystyrene and acrylonitrile-styrene copolymer; Polyolefin resins such as polyethylene, polypropylene, polyolefins having a cyclo or norbornene structure, and ethylene-propylene copolymers; Vinyl chloride resin; Amide resins such as nylon and aromatic polyamide; Imide resin; Polyether sulfone type resin; Sulfone based resin; Polyether ether ketone resin; A sulfided polyphenylene resin; Vinyl alcohol-based resin; Vinylidene chloride resins; Vinyl butyral resin; Allylate series resin; Polyoxymethylene type resin; Or an epoxy-based resin, and a film composed of the blend of the thermoplastic resin may also be used. Further, a film made of a thermosetting resin such as (meth) acrylic, urethane, acrylic urethane, epoxy, or silicone or a film made of an ultraviolet curable resin may also be used. Particularly, triacetylcellulose is preferable.
In addition, the present invention provides a liquid crystal display device in which an electromagnetic wave reaction unit including the film is attached to the front side.
For example, the liquid crystal display device may have a polarizing plate including the film and an infrared and ultraviolet reaction unit including the film attached to the front side.
The present invention also relates to an electromagnetic wave reaction unit comprising the film; And a light source capable of emitting an electromagnetic wave.
In the present invention, the " pointing display device " is a device used for pointing and displaying arbitrary coordinates on a display device. In particular, the present invention relates to an infrared ray and ultraviolet ray reaction part including a film including a substance sensitive to infrared rays and a substance sensitive to ultraviolet rays as an example; A liquid crystal display device in which the infrared and ultraviolet reaction units are attached to the front surface; And a pointing display device including an infrared light source capable of emitting infrared light and an ultraviolet light source capable of emitting ultraviolet light, and the pointing display device and the pointing display device including the liquid crystal display device.
The infrared and ultraviolet ray reacting unit includes a film including a substance sensitive to infrared rays and a substance sensitive to ultraviolet rays, and the substance sensitive to infrared rays and the substance sensitive to ultraviolet rays are the same as described above.
The electromagnetic wave reaction unit may further include a substrate unit. The substrate portion may be made of at least one material selected from the group consisting of polyvinyl acetate, polypropylene, triacetylcellulose, polyacrylic resin, polyethylene terephthalate or polyolefin resin, and is preferably composed of polyvinyl acetate and triacetylcellulose Do.
It is preferable that a film including a substance sensitive to infrared rays and a substance sensitive to ultraviolet rays includes an infrared ray and ultraviolet ray reaction part coated on one side or both sides of the substrate part.
It is preferable that the infrared ray-sensitive material and the ultraviolet ray-sensitive material of the ultraviolet ray reaction part are coated on the entire surface of the substrate or dispersed in the substrate part.
It is preferable that the infrared light source is an energy source for self-emission of a substance sensitive to infrared rays, and a pointing device having an infrared light source for providing infrared rays to the infrared ray reaction unit. The pointing device may be any of those generally used in the art.
In the present invention, the infrared light preferably has a wavelength of 700 to 1600 nm and an intensity of light of 0.5 mW / mm 2 or more.
If the wavelength of the light is less than 700 nm, there is a problem that self-emission of a substance sensitive to infrared rays is not generated because it is a light source in the visible light region. If the wavelength of light is not more than 1600 nm, The poet has a difficult problem. If the light incidence is less than 0.5 mW / mm < 2 & gt ;, there is a problem that the self-emission is insignificant and visibility of the point is difficult.
Preferably, the ultraviolet light source is an energy source for self-emission of a substance sensitive to ultraviolet rays, and a pointing device having an ultraviolet light source for providing ultraviolet rays to the ultraviolet ray reaction unit. The pointing device may be any of those generally used in the art.
In the present invention, the wavelength of light of the ultraviolet laser is preferably 100 nm to 450 nm, and the intensity of light is preferably 1 mW / mm 2 to 10 mW / mm 2 .
If the wavelength of the light is less than 100 nm, it is a light source of the X-ray region. Therefore, when the light source is exposed to the human body, there is a harmful problem to the human body. If it exceeds 450 nm, the light source of the visible light region causes self- So there is a problem. If the light incidence is less than 1 mW / mm 2, the self-emission is insignificant and visibility of the point is difficult. If the light intensity is more than 10 mW / mm 2 , the performance of the electronic component of the display device may be deteriorated.
The electromagnetic wave reaction unit may further include an adhesive layer for attaching the electromagnetic wave reaction unit to the liquid crystal display device.
The liquid crystal display may be any commonly used liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED), and a plasma display (PDP).
The adhesive layer can be used as long as it is commonly used in the art, but preferably it is Optically Clear Adhesive (OCA).
As an example, the pointing display device of the present invention can be used to simultaneously irradiate infrared light and ultraviolet light sources to the infrared and ultraviolet reaction units attached to the liquid crystal display device, have.
Hereinafter, the present invention will be described in more detail by way of examples. However, the following examples are intended to further illustrate the present invention, and the scope of the present invention is not limited by the following examples. The following examples can be appropriately modified and changed by those skilled in the art within the scope of the present invention.
Example 1. Manufacture of transparent film containing materials sensitive to infrared and ultraviolet rays
1.1 Manufacture of Infrared Sensitive Materials (Infrared Reactive Materials)
NaYF 4 nanoparticles doped with Yb 3 + 17 mol% and Er 3 + 3 mol% were prepared (see J. Phys. Chem. C vol. 114, No. 1, pages 61-106).
Specifically, a round flask equipped with an argon gas purging is CF 3 COONa 2.06 mmol, Y ( CF 3 COO) 3 0.75 mmol, Yb (CF 3 COO) 3 0.16mmol, Er (CF 3 COO) 3 0.03mmol, oleic acid (oleic acid, and 60 mmol of 1-octadecene were added. The solution was maintained at 120 DEG C for 30 minutes, then increased to 330 DEG C at a rate of 8 DEG C / minute, and then cooled to room temperature. The cooled solution was poured into an excess of acetone to precipitate nanoparticles and then centrifuged to prepare an infrared sensitive material.
1.2 Preparation of ultraviolet sensitive substance (UV reactive substance)
It was prepared in a 2 + Eu, Dy 3+ nanoparticles (see Kor J. Matre Res Vol20, No7, 2010, P365...): Eu 2 + , and SrAl 2 O 4 Dy 3 + doped.
Specifically, distilled water in a stainless steel reactor, one Sr maintained at about 80 ℃ (NO 3) 2, Eu (NO 3) 3, Dy (NO 3) 3, Al (NO 3) for 3 powder Sr (NO 3 ) 2: Eu (NO 3) 3: Dy (NO 3) 3: Al (NO 3) the composition ratio of 3: 98.5: 0.25: 0.05: then a solution of 2 mol%, and completely in distilled water is held there at about 80 ℃ To prepare a nitrate solution. To the nitrate solution thus prepared, glycine and nitrate were added at a ratio of 2: 1 and stirred at about 80 ° C until the glycine-nitrate solution became transparent. The mixture was heated to about 200 ° C to form an ash- . The phosphor thus synthesized was heated in an alumina crucible at 1200 ° C for 4 hours to prepare a SrAl 2 O 4 : Eu 2+ , Dy 3+ phosphor.
1.3 Manufacture of Coating Agent
40 parts by weight Urethane acrylate (MI21, SC2153), 18.5 parts by weight pentaerythritol triacrylate (M340, M340), 40 parts by weight methyl isobutyl ketone (purified gold), 1 part by weight Photoinitiator -184), and 0.5 parts by weight of leveling agent (BYKEMASA, BYK378) were mixed using a stirrer and filtered using a PP filter to prepare a coating agent.
1.4 Preparation of transparent film
A coating liquid consisting of 96 parts by weight of a coating agent prepared from the above 1.3, 2 parts by weight of the sensitizing material prepared from 1.1, and 2 parts by weight of the sensitizing material prepared from 1.2 above was coated on one side of a substrate made of triacetylcellulose film And then dried at a temperature of 30 to 150 ° C for 30 seconds to 10 minutes and then cured by ultraviolet rays at a light amount of 0.1 to 2 J / cm 2 to obtain a transparent film containing an infrared sensitive material and a UV sensitive material (See Table 2).
Example 2 to 4 and Comparative Example 1-4
A transparent film containing an infrared sensitive substance and a UV sensitive substance was prepared in the same manner as in Example 1, with the composition and content (unit: parts by weight) shown in Table 2 below.
Manufacturing example 1. Preparation of a polarizing film containing an infrared reactive substance and an ultraviolet reactive substance
A transparent film produced from the above Examples 1 to 4 and Comparative Examples 1 to 4 was attached to one side of an iodine-stained PVA polarizer, and a TAC film was attached to the other side of the PVA polarizer to form an infrared ray reaction material and an ultraviolet ray reaction material Was prepared.
Manufacturing example 2: Infrared The reaction part And ultraviolet Reaction part Fabrication of attached liquid crystal display
A polarizing film (an infrared ray reaction part and an ultraviolet ray reaction part) prepared in Preparation Example 1 was attached to the entire surface of a liquid crystal display device to produce a liquid crystal display device including an infrared sensitive material and a UV sensitive material.
Experimental Example
1.1 Point Visibility Evaluation
Based on whether or not the pointing position of the infrared light source can be visually recognized, the visibility of the position was visually judged based on the following criteria, and the results are shown in Table 3.
<Visibility by the naked eye>
◎: It is very well recognized.
○: It is recognized.
X: No visibility at all.
1.2 Evaluation of display function
The visibility and display retention time (luminescence time) of the ultraviolet light source were visually determined based on the following criteria, and the results are shown in Table 3.
<Visible display by visual means>
◎: It is very well recognized.
○: It is recognized.
X: No visibility at all.
1.3 Measurement of transmittance
The transmittance was measured using a permeability meter (Suga HZ-1). The results are shown in Table 3.
As shown in Table 3, Examples 1 to 4 are superior to Comparative Examples 1 to 4 in terms of point visibility (viewing point where an infrared light source is pointed), display function (continuously displayed by ultraviolet light source) Respectively.
Claims (12)
Wherein the second material has a longer light emission time than the first material,
The first material is an infrared-sensitive material. The material is a two-photon absorption material, a second harmonic generation material, an upconversion material by excited state absorption, An upconversion by sensitized energy transfer by an energy transfer, an upconversion by cooperative luminescence by coherent light emission, and an upconversion by photon avalanche by a photon incident. More than species,
The second material is a material which is sensitive to ultraviolet light and is doped with an activator Eu and a diluent Dy in MAl 2 O 4 (M = Ba, Sr, Ca, or Mg)
Wherein the sum of the weights of the first material and the second material is 0.2 to 10% by weight based on the total weight of the coating liquid.
Wherein the second material has an emission time of at least 2 times as high as that of the first material.
The light emission time of the first material is less than 1 second,
And the light emission time of the second material is more than 3 seconds.
The pointing display device includes:
An infrared and ultraviolet ray reaction unit comprising the film according to claim 1; And an ultraviolet light source capable of emitting an ultraviolet laser and an infrared light source capable of emitting an infrared laser.
The electromagnetic wave reaction unit may further include a substrate portion,
Wherein the base portion is made of at least one material selected from the group consisting of polyvinyl acetate, polypropylene, triacetylcellulose, polyacrylic resin, polyethylene terephthalate, and polyolefin resin.
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| KR101856837B1 true KR101856837B1 (en) | 2018-06-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008209598A (en) * | 2007-02-26 | 2008-09-11 | Dainippon Printing Co Ltd | Optical film |
| KR20140026287A (en) * | 2012-08-22 | 2014-03-05 | 동우 화인켐 주식회사 | Pointing display device |
| KR20150029887A (en) * | 2013-09-11 | 2015-03-19 | 동우 화인켐 주식회사 | Laser Pointing Display Device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040014763A (en) | 2002-08-12 | 2004-02-18 | 이문기 | Pointing apparatus using laser and camera |
| KR20120012727A (en) * | 2010-08-03 | 2012-02-10 | 삼성전자주식회사 | Pointing device and display apparatus having the same |
| KR20140127717A (en) * | 2013-04-25 | 2014-11-04 | 동우 화인켐 주식회사 | OPTICAL FILM and POINTING display DEVICE |
| KR101919163B1 (en) * | 2013-08-30 | 2018-11-15 | 동우 화인켐 주식회사 | Optical Film |
-
2016
- 2016-01-21 KR KR1020160007612A patent/KR101856837B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008209598A (en) * | 2007-02-26 | 2008-09-11 | Dainippon Printing Co Ltd | Optical film |
| KR20140026287A (en) * | 2012-08-22 | 2014-03-05 | 동우 화인켐 주식회사 | Pointing display device |
| KR20150029887A (en) * | 2013-09-11 | 2015-03-19 | 동우 화인켐 주식회사 | Laser Pointing Display Device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170087706A (en) | 2017-07-31 |
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