WO2016018043A1 - Switching lens for stereoscopic image display device, and method for manufacturing same - Google Patents

Abstract

The present invention relates to a 2D/3D switching lens comprising: an upper plate including an upper substrate and an upper transparent electrode formed on the bottom surface of the upper substrate; and a lower plate including a lower substrate and a lower transparent electrode formed on the upper surface of the lower substrate. Further, the 2D/3D switching lens comprises: a lenticular lens part formed between the upper plate and the lower plate, the lenticular lens part including at least two lenticular lenses arranged therein; and a liquid crystal layer having a liquid crystal alignment forming layer on the upper surface and lower surface thereof, wherein the lenticular lens part is made of organic and inorganic hybrid resins and the refractive index thereof is identical to the high refractive index of the liquid crystal layer.

Description

Switching lens for stereoscopic image display device and manufacturing method thereof

The present invention relates to a 2D / 3D switching lens for a stereoscopic image display device.

Current 3D displays generate three-dimensional effects based on "parallax". In other words, by using a predetermined mechanism or technology, both eyes of the user to see different images, binocular disparity caused by the two eyes are separated from each other by about 65mm is one of the most important factors of three-dimensional.

The left eye sees only the left eye image, the right eye sees only the right eye image, and the left and right eye images each take two different view angles with respect to the object, so it is called a three-dimensional picture pair. The observer's brain combines these two types of images with binocular vision to produce a 3D effect. Such a technique of generating a three-dimensional image by using binocular vision is called stereography, and the 3D display device is a device applying this stereography.

To this end, the display device may include a switching lens. The switching lens includes a birefringent material, such as a liquid crystal, which may exhibit different refractive indices as the mode is switched between 2D and 3D depending on whether voltage is applied. The switching lens passes the incident light as it is without changing the path under the 2D mode, but under the 3D mode, the switching lens functions as a lens that changes the path of the incident light to provide different two-dimensional images to the left eye and the right eye.

In the prior art, the lenticular lens portion of the switching lens has the refractive index of n _o of the liquid crystal, and the liquid crystal has the birefringence of n _o or n _e (n _o <n _e ), thereby depending on whether the voltage of the liquid crystal is applied to the 2D mode and the 3D mode. Make the switch. Thus, the general prior art implements 3D as usual, i.e. without voltage applied.

This means that voltage is required to implement 2D, and the refractive index of the lenticular lens portion and the liquid crystal of the liquid crystal are equalized to maintain the path of incident light through voltage application. On the other hand, in order to implement the 3D mode, by applying a voltage to the liquid crystal, the refractive index of the lenticular lens unit and the refractive index of the liquid crystal are different so that the path of the incident light is changed to enable the 3D mode. As described above, the conventional 2D / 3D implementation has a disadvantage in that power consumption is increased due to voltage application when implementing 2D mode, which is commonly used.

The present invention has been made to solve the problems of the prior art,

It is an object of the present invention to provide a 2D / 3D switching lens having the advantage of reducing the power consumption, since it is possible to implement 2D instead of 3D when no voltage is applied. In addition, it is an object of the present invention to provide a 2D / 3D switching lens that can reduce the amount of liquid crystal used to reduce the cost.

The present invention,

An upper plate 110 including an upper substrate 111 and an upper transparent electrode 112 formed on a lower surface of the upper substrate; And

And a lower plate 120 including a lower substrate 121 and a lower transparent electrode 122 formed on an upper surface of the lower substrate.

Between the upper plate 110 and the lower plate 120, a lenticular lens unit 130 having two or more lenticular lenses disposed thereon and a liquid crystal layer 140 having a liquid crystal alignment layer formed on upper and lower surfaces of the liquid crystal layer. Including,

The lenticular lens unit 130 is made of an organic or inorganic hybrid resin, and provides a 2D / 3D switching lens having a refractive index equal to the high refractive index n _e of the liquid crystal layer 140.

In addition, the present invention

Provided is a 2D / 3D display device including the 2D / 3D switching lens.

The 2D / 3D switching lens of the present invention can provide an effect capable of implementing 2D mode when no voltage is applied to the liquid crystal. In addition, by filling the liquid crystal in the intaglio portion that is outside the embossed lenticular lens, it is possible to provide a 2D / 3D switching lens that reduces the amount of liquid crystal used compared to the same class to reduce the cost and improve the liquid crystal alignment.

In addition, the 2D / 3D switching lens of the present invention is a resin constituting the lenticular lens portion to have a high refractive index by using an organic and inorganic hybrid resin, high precision 2D / 3D switching lens and 2D / 3D including the same It is possible to provide a display device.

1 is a view showing an implementation principle of a stereoscopic image by a lenticular lens.

2 is an exploded perspective view of a conventional 2D / 3D switching lens as an example.

3 is a cross-sectional view illustrating a structure of a conventional 2D / 3D switching lens as an example.

4 to 6 are examples of exploded perspective views of the 2D / 3D switching lens of the present invention.

7 and 8 are cross-sectional views showing the structure of the 2D / 3D switching lens of the present invention as an example.

9 and 10 are diagrams illustrating an implementation of the 3D mode when a voltage is applied to the switching lens of the present invention.

 11 and 12 illustrate, as an example, that 2D mode is implemented when no voltage is applied to the switching lens of the present invention.

<Description of Symbols for Main Parts of Drawings>

1: lenticular lens 110: top plate

111: upper substrate 112: upper transparent electrode

113: lenticular lens portion 114: upper alignment film

120: lower plate 121: lower substrate

122: lower transparent electrode 123: lower alignment layer

130: lenticular lens unit

140: liquid crystal layer 141: upper liquid crystal alignment layer

142: lower liquid crystal alignment layer 150: display device

200: switching lens 210: top plate

211: first film 212: first transparent electrode

213: lenticular lens portion 214: upper alignment film

215: liquid crystal 220: lower plate

221: second film 222: second transparent electrode

223 lower alignment layer 230 lenticular lens unit

240: liquid crystal layer 241: upper liquid crystal alignment layer

242: lower liquid crystal alignment layer 243: upper alignment layer

244: lower alignment layer 300: display panel

400: adhesive layer

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. Prior to describing the present invention, if it is determined that a detailed description of related known functions and configurations may unnecessarily obscure the subject matter of the present invention, the description thereof will be omitted. In addition, in the following examples, individual components and functions may be generally selected unless explicitly required, and the order of the processes may be changed.

3 is a cross-sectional view showing the structure of a conventional 2D / 3D switching lens as an example. In a conventional 2D / 3D switching lens, the upper plate 210 may include a first film 211, a first transparent electrode 212 formed on a bottom surface of the first film 211, and a bottom surface of the first transparent electrode 212. And a lenticular lens unit 213 formed in the upper surface, an upper alignment layer 214 formed on a lower surface of the lenticular lens unit, and a liquid crystal 215 in contact with the upper alignment layer 214. In this case, the lenticular lens unit 213 has two or more lenticular lens patterns.

The lower plate 220 includes a second film 221, a second transparent electrode 222 formed on the top surface of the second film 221, and a lower alignment layer 223 formed on the top surface of the second transparent electrode.

The upper plate 210 and the lower plate 220 are bonded to each other through a laminating process such that the liquid crystal 215 of the upper plate 210 and the lower alignment layer 223 of the lower plate 220 are in direct contact with each other. The 3D switching lens 200 is bonded to the display panel 300 by the adhesive layer 400.

At this time, the liquid crystal 215 has a birefringence of n _o and n _e (n _o <n _e ) to switch between 2D mode and 3D mode depending on whether or not the voltage of the liquid crystal is applied. When no voltage is applied to the liquid crystal, the liquid crystal is placed in the long axis direction to have an n _e refractive index, and when the voltage is applied, the liquid crystal is placed in the short axis direction to have an n _o refractive index.

In the prior art, the lenticular lens portion 213 is in the form of an intaglio and has an n _o refractive index. Therefore, in the conventional case, when no voltage is applied, a difference occurs in the refractive indexes of the lenticular lens unit having the refractive index n _o and the liquid crystal having the refractive index n _e , and the path of the incident light is changed, thereby implementing the 3D mode. That is, in order to implement the 3D mode normally, and to implement the 2D mode, voltage application is required to adjust the refractive index of the liquid crystal to n _o equal to the refractive index of the lenticular lens unit. Since the liquid crystal has a refractive index n _o , which is a short axis when voltage is applied, there is no difference between the lenticular lens unit having the refractive index n _o , and thus no path change of incident light occurs. Therefore, there is a problem in that power consumption is high because voltage is generally required to implement a 2D mode that is frequently used.

Hereinafter, the present invention will be described in more detail.

The present invention to overcome the limitations of the prior art,

An upper plate 110 including an upper substrate 111 and an upper transparent electrode 112 formed on a lower surface of the upper substrate; And

And a lower plate 120 including a lower substrate 121 and a lower transparent electrode 122 formed on an upper surface of the lower substrate.

Between the upper plate 110 and the lower plate 120, a lenticular lens unit 130 having two or more lenticular lenses disposed thereon and a liquid crystal layer 140 having a liquid crystal alignment forming layer formed on upper and lower surfaces of the liquid crystal layer. Including,

The lenticular lens unit 130 is made of an organic or inorganic hybrid resin, and provides a 2D / 3D switching lens having a refractive index equal to the high refractive index n _e of the liquid crystal layer 140.

That is, the refractive index of the lenticular lens unit 130 is equal to the refractive index n _e of the long axis of the liquid crystal.

The liquid crystal alignment layer may be classified into an upper liquid crystal alignment layer 141 disposed on an upper surface of the liquid crystal layer and a lower liquid crystal alignment layer 142 disposed on a lower surface of the liquid crystal layer. By adjusting the orientation of the liquid crystal.

The liquid crystal alignment layer may be a layer including at least one selected from an alignment layer subjected to a rubbing treatment and / or photo alignment treatment, and an alignment layer rubbing treatment of a resin after coating treatment, and in addition, a layer capable of adjusting the alignment of the liquid crystal. It does not limit if it is.

In forming the switching lens of the present invention, the arrangement of the lenticular lens portion and the liquid crystal layer may vary.

As shown in Figure 4 as an embodiment of the present invention,

In the case of providing the lenticular lens unit 130, the liquid crystal layer 140, and the liquid crystal alignment layer between the upper plate 110 and the lower plate 120, the lenticular lens unit 130 is disposed on the upper plate 110. The liquid crystal layer 140 may be disposed on the lower plate 120 side.

That is, the lenticular lens unit 130 is disposed on the lower surface of the upper transparent electrode 112, and the lower liquid crystal alignment layer 142, the liquid crystal layer 140, and the upper liquid crystal alignment layer 141 are disposed on the upper surface of the lower transparent electrode 112. ) Are placed one after the other.

In addition, as shown in Figure 6 as another embodiment of the present invention,

In providing the lenticular lens unit 130, the liquid crystal layer 140, and the liquid crystal alignment forming layer between the upper plate 110 and the lower plate 120, the liquid crystal layer 140 is disposed on the upper plate 110 and the lower plate. The lenticular lens unit 130 may be disposed at the side of 120.

That is, the lenticular lens unit 130 is disposed on the upper surface of the lower transparent electrode 122, and the upper liquid crystal alignment forming layer 141, the liquid crystal layer 140, and the lower liquid crystal alignment are disposed on the lower surface of the upper transparent electrode 112. The formation layers 142 are arranged in sequence.

In addition, in forming the switching lens of the present invention, the shape of the lenticular lens portion and the liquid crystal layer may vary.

As shown in FIG. 4 as an embodiment of the present invention, the lenticular lens unit 130 may have an intaglio shape, and the liquid crystal layer 140 may have an embossed shape.

5 and 6, the lenticular lens unit 130 may have an embossed form, and the liquid crystal layer 140 may have an engraved form. The conventional 2D / 3D switching lens has an intaglio lenticular lens portion and fills a liquid crystal in an embossed portion, which is an outer space of the pattern (FIG. 2), and has an embossed liquid crystal layer. In this case, the amount of liquid crystal used increases, which causes a cost increase.

2D / 3D switching lens of the present invention may have a lenticular lens portion of the embossed form, by filling the liquid crystal in the intaglio portion of the outer space (Figs. 5 and 6) can reduce the amount of liquid crystal used compared to the conventional case Economic effects such as cost reduction can be provided.

The lenticular lens portion 130 in the present invention has a refractive index n _e, which is equal to the refractive index of long axis of the liquid crystal (n _e). Since the lenticular lens unit 130 of the present invention having the n _e refractive index requires a higher refractive index than the lenticular lens unit having the conventional n _o refractive index, a high refractive resin for this is needed (n _o <n _e ).

In general, the high refractive resin is composed of an organic compound, the upper limit of the refractive index range that can be adjusted by the organic compound is theoretically known as about 1.7. For this reason, the range of the refractive index which can be upward compared with the inorganic particle which has a higher refractive index is narrow. In addition, the high refractive index resin prepared by using only organic compounds has problems such as high viscosity and low UV stability, and thus, many restrictions occur during manufacturing or curing.

Therefore, in order to overcome this problem, the present invention provides a 2D / 3D switching lens, characterized in that the lenticular lens portion is made of an organic or inorganic hybrid resin. At this time, the refractive index of the lenticular lens portion is equal to the high refractive index n _e of the liquid crystal layer.

The organic and inorganic hybrid resins may be prepared by curing a resin composition in which high refractive inorganic particles are mixed with an organic compound and a photoinitiator, and may provide a resin having a high refractive index that is difficult to manufacture using only existing organic compounds.

The refractive index of the organic and inorganic hybrid resin of the present invention is characterized in that 1.53 to 1.8, more preferably 1.60 to 1.75, the lenticular lens portion formed using this can also exhibit the same refractive index. Thus, using the organic and inorganic hybrid resin of the present invention can not only form a lenticular lens portion having a high refractive index, but also provide a high refractive index resin that is transparent and has excellent transmittance and minimizes light loss. Can increase. Moreover, as UV curable resin, the extending process of resin, etc. which have high refractive index is not needed, and process precision can be improved.

The organic and inorganic hybrid resin of the present invention can be produced by curing a curable resin composition containing an organic compound, inorganic particles, and a photoinitiator. It is preferable that the organic compound contained in the said organic, inorganic hybrid resin composition is following General formula (1).

 [Formula 1]

In Formula 1, R is hydrogen or an alkyl group of C1 ~ C15,

n is an integer of 1 or more, preferably an integer of 1 to 10,

a, b, and c are each an integer equal to or greater than zero, and a + b + c ≥ 3,

x, y and z are each an integer of 0 to 50, the same or different,

Y is one selected from functional groups of Formulas 2 to 5,

[Formula 2]

In Formula 2, R1 to R12 may each be hydrogen, an alkyl group of C1 to C15, an aromatic cyclic compound of C6 to C30, or a functional group including one or more oxygen, nitrogen, and sulfur atoms, provided that one of R1 to R12 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K`} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer of 1 to 10, j is an integer of 0 to 10.

The functional group containing at least one oxygen, nitrogen, or sulfur atom may be an alkylether group, a hydroxyalkyl group, an alkoxy group, an alkylamide group or an alkylester group.

 [Formula 3]

In Formula 3, R1 to R6 may each be hydrogen, an alkyl group of C1 to C15, an aromatic cyclic compound of C6 to C30, or a functional group including one or more oxygen, nitrogen, and sulfur atoms, provided that one of R1 to R6 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K`} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer of 1 to 10, j is an integer of 0 to 10.

The functional group containing at least one oxygen, nitrogen, or sulfur atom may be an alkylether group, a hydroxyalkyl group, an alkoxy group, an alkylamide group or an alkylester group.

 [Formula 4]

In Formula 4, R1 to R10 may each be hydrogen, an alkyl group of C1 to C15, an aromatic cyclic compound of C6 to C30, or a functional group including one or more oxygen, nitrogen, and sulfur atoms, provided that one of R1 to R10 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K`} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer of 1 to 10, j is an integer of 0 to 10.

The functional group containing at least one oxygen, nitrogen, or sulfur atom may be an alkylether group, a hydroxyalkyl group, an alkoxy group, an alkylamide group or an alkylester group.

[Formula 5]

In Formula 5, R1 to R18 may each be hydrogen, an alkyl group of C1 to C15, an aromatic cyclic compound of C6 to C30, or a functional group including one or more oxygen, nitrogen, or sulfur atoms, provided that one of R1 to R18 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K`} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer of 1 to 10, j is an integer of 0 to 10.

The functional group containing at least one oxygen, nitrogen, or sulfur atom may be an alkylether group, a hydroxyalkyl group, an alkoxy group, an alkylamide group or an alkylester group.

The organic compound may be included in 5 to 90% by weight, more preferably 10 to 70% by weight relative to the total weight of the organic and inorganic hybrid resin composition, within the above range to implement the viscosity and refractive index of the resin suitable for use It can be used by adjusting appropriately.

The inorganic particles included in the organic / inorganic hybrid resin composition may be preferably those having a nanoparticle size smaller than the size of the visible light region of 380 nm, and more preferably those having a primary particle size of 1 to 50 nm. have. Here, the primary particle size is the size made during the manufacture of the particles, the minimum size that can be dispersed. The inorganic particles may have excellent transmittance and refractive index by having a size in the above-described range, and can be dispersed on the organic compound to obtain a transparent high refractive index resin.

Specific examples of the inorganic particles include TiO ₂ , ZrO ₂ , In ₂ O ₃ , SnO ₂ , Y ₂ O ₃ , CaO, MgO, ZnO, SiO ₂ , SnO ₂ , Sb ₂ O ₅ , Nb ₂ O ₃ , ATO , SnO ₂ Sb CeO ₂ and Al ₂ O ₃ , and the like, and one or more selected from these may be used, but is not limited thereto.

The content of the inorganic particles may be 5 to 90% by weight, more preferably 10 to 40% by weight based on the total weight of the oil and inorganic hybrid resin composition. When the content is within the above range, it exhibits a high refractive index and a high transmittance, has an appropriate viscosity and excellent optical properties. The said inorganic particle can be used by adjusting suitably within the said range according to the refractive index of resin to manufacture.

As a photoinitiator contained in the said oil and inorganic hybrid resin composition, For example, a phosphine oxide type compound, a propane type compound, a ketone type compound, a formate type compound, an acetophenone type compound, a benzophenone type compound, a thioxanthone type compound , Benzoin-based compounds, triazine-based compounds, oxime-based compounds and combinations thereof may be used to select one or more selected from, but not limited to. More preferably, 2,4,6-trimethylbenzoyl diphenylphosphine oxide and / or methylbenzoyl formate may be used as the photoinitiator.

The photoinitiator content may be preferably 0.01 to 10% by weight, more preferably 0.05 to 5% by weight based on the total weight of the organic and inorganic hybrid resin compositions. When the content is within the above range, the sensitivity is excellent, which is advantageous for physical and optical properties.

The curable oil and inorganic hybrid resin composition for preparing an intaglio or embossed lenticular lens unit according to an embodiment of the present invention may further include other ultraviolet curable monomers in addition to the organic compound, inorganic particles, and photoinitiator represented by Formula 1 above. It may include. Specific examples of the other ultraviolet curable monomers include tetrahydrofurfuryl acrylate, 2 (2-ethoxyethoxy) ethyl acrylate, 1,6-hexanediol di (meth) acrylate, benzyl (meth) acrylate, Phenoxyethyl methacrylate, 1,6-hexanediol di (meth) acrylate, benzyl (meth) acrylate, phenoxyethyl acrylate, phenoxy aeroethylene ethylene glycol (meth) acrylate, 2-hydroxy-3 -Phenoxypropyl acrylate, neopentyl glycol benzoate acrylate, 2-hydroxy-3-phenoxypropyl acrylate, phenylphenoxyethanol acrylate, caprolactone (meth) acrylate, nonylphenol polyalkylene glycol ( Meth) acrylate, trimethyl propane tri (meth) acrylate, styrene, methyl styrene, phenyl epoxy (meth) acrylate, alkyl (meth) acrylate, and the like. One member can choose to use later.

In addition, the organic and inorganic hybrid resin composition may further include at least one selected from additives such as ultraviolet absorbers, ultraviolet stabilizers, diluents, color stabilizers, leveling agents, antioxidants, antifoaming agents, solvents and antistatic agents.

In the present invention, the lenticular lens unit 130 may include a lenticular lens pattern by transferring the master roll including the pattern of the lenticular lens onto the substrate, engraving the film, and curing the same. The master roll is a tool for shaping hills and valleys on a substrate such as a prism sheet, a lens, and the like, and generally refers to a cylindrical roll, but is not limited thereto. By using the master roll, a master pattern may be used to imprint a continuous pattern of hills and valleys.

The lenticular lens pattern may have a pitch of 10 to 1000 μm, but is not limited thereto, and the lenticular lens pattern is not particularly limited as long as it can be formed. For example, one or more patterns selected from the group consisting of a polygonal, semi-circular or semi-elliptic polyhedron shape, columnar shape and curved columnar shape may be a hardened pattern.

The 2D / 3D switching lens of the present invention may have a lenticular lens portion of an intaglio or embossed form. In the conventional case, the 2D / 3D switching lens has an intaglio lenticular lens portion, and by filling a liquid crystal outside the intaglio lenticular lens portion, it is common to have an embossed liquid crystal layer (FIG. 2). However, since the 2D / 3D switching lens of the present invention may also have an embossed lenticular lens portion (FIGS. 5 and 6), it is possible to have an intaglio liquid crystal layer by filling a liquid crystal outside the embossed lenticular lens portion. It is possible. For this reason, the amount of liquid crystal used can be reduced compared to the conventional 2D / 3D switching lens in the same class, thereby providing economic effects such as cost reduction.

7 and 8 are cross-sectional views showing the structure of the 2D / 3D switching lens of the present invention. The 2D / 3D switching lens 200 of the present invention is bonded to the display panel 300 by the adhesive layer 400.

In FIG. 7, the upper plate 210 includes a first film 211 and a first transparent electrode 212 formed on a bottom surface of the first film 211. The lower transparent surface of the first transparent electrode is formed with a lenticular lens unit 230 having two or more lenticular lenses and an upper liquid crystal alignment layer 241 formed on the lower surface of the lenticular lens unit 230.

The lower plate 220 includes a second film 221 and a second transparent electrode 222 formed on an upper surface of the second film 221, and a lower liquid crystal alignment layer 242 is formed on an upper surface of the second transparent electrode. Is formed. A liquid crystal layer 240 driven by a voltage applied by the first transparent electrode and the second transparent electrode is formed between the upper liquid crystal alignment layer 241 and the lower liquid crystal alignment layer 242.

The liquid crystal layer 240 and the lower liquid crystal alignment layer 242 may be bonded to each other through a laminating process, and the lenticular lens unit 230 may be a high refractive oil and an inorganic hybrid resin. Provide a 3D switching lens.

In the present invention, the display device 150 includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP) and an organic light emitting diode device (Organic Light). Flat panel display devices such as an Emitting Diode).

The 2D / 3D switching lens of the present invention includes an upper panel 110 and a lower panel 120 that face each other with an electrically controllable liquid crystal layer therebetween, and in 2D image mode, the light is transmitted from the display device 150 as it is, and 3D In the image mode, the light is refracted from the display device 150 to serve as an optical controller for separating the path of the light corresponding to the left eye image and the path of the light corresponding to the right eye image.

In the present invention, the display panel 300 provides a 2D image under 2D mode and a 3D image (left eye image and right eye image) under 3D mode, and may be a PDP panel, an LCD panel, or an OLED panel. .

As an adhesive for forming the pressure-sensitive adhesive layer 400 for bonding the switching lens 200 and the display panel 300, for example, a transparent pressure-sensitive adhesive may be preferably used, but is not limited thereto.

In the present invention, materials such as upper and lower substrates, upper and lower transparent electrodes, liquid crystal alignment layer, liquid crystal and the like and a method of constructing a 2D / 3D switching lens using them are not particularly limited, and are known in the art within the scope of the present invention. Can be applied.

In addition, in the present invention, the material of the first film, the second film, the liquid crystal alignment layer, the first transparent electrode, the second transparent electrode, the liquid crystal, and the like, and the method of constructing the 2D / 3D switching lens using them are within the scope of the present invention. It does not specifically limit, unless it departs from, it is possible to apply techniques known in the art.

Since the above is merely described with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the technical of the present invention described above It will be said that both the spirit and the technical spirit which together with the basis are included in the scope of the present invention.

Hereinafter, an embodiment of the present invention will be described in more detail. However, the following embodiments are only for illustrating the present invention, and the technical scope of the present invention is not limited to these embodiments.

< Production Example > Acrylate Oligomer  Produce

Production Example  One.

500 g of toluene, 14 ml of triethylamine, 39.3 g (0.1 mol) of bisphenol-A bischloroformate (Aldrich) and 75.0 g (0.2 mol) of polyethylene glycol acrylate (Aldrich, 375) in a nitrogen-filled reflux reactor Was added and reacted at 50 ° C for 24 hours. The resulting salt was separated by centrifugation and the solvent and unreacted material were removed by distillation under reduced pressure, where n = 2, R = H, x = 2, y and z were 0, and a = 9, b and c. Is 0, Y is an acrylate oligomer represented by Formula 1 wherein R ₂ = -OCH ₂ CH _2- , R ₈ = -OCH ₂ CH ₃ , R ₅ , R ₁₁ = CH ₃ , and the remaining R is H in Formula 2; Prepared.

Production Example  2.

Into a reflux reactor filled with nitrogen, 200 g of toluene, 9.4 g of phenol (Aldrich), 28.8 g of epoxy butane (Aldrich), and 0.05 g of benzyltriethylammonium chloride were added and reacted at 90 ° C for 24 hours. 15.51 g of isocyanatoethyl methacrylate (Aldrich) was added to the obtained product, 0.05 g of dibutyltin dilaurate (Aldrich) was added as a catalyst, and the reaction was carried out at 60 ° C for 24 hours. Unreacted material and solvent were removed by distillation under reduced pressure, where n = 1, R is CH ₃ , x is 4, y and z is 0, a = 4, b, c = 0, Y is R ₁ in Formula 3 An acrylate oligomer represented by formula (1) wherein -C = ONHCH ₂ CH ₂ -and the remaining R is H was prepared.

Production Example  3.

200 g of toluene, 92 g (0.1 mol) of polypropylene glycol monoacrylate (BISOMER PPA6, LARPORTE), 0.04 g of tin chloride (Aldrich) and 10.17 g (0.11 mol, Aldrich) of nitrogen in a reflux reactor filled with nitrogen After stirring for 24 hours at a reaction temperature of 80 ℃ using a NaOH 50% aqueous solution was carried out desalting reaction. Thereafter, 47.9 g (0.05 mol) of the obtained product obtained by distillation under reduced pressure after removal of NaCl salt using a separating funnel was added to 200 g of toluene, and then 10.1 g (0.051 mol, Aldrich) of 2-biphenylcarboxylic acid was added. And benzyltriethylammonium chloride 0.05g were added and reacted at 90 ° C for 24 hours. After removing the unreacted starting material and the solvent through the distillation under reduced pressure, and n = 1, R is H, x = 3, y and z = 0, a = 5, b, c = 0, Y is an R ₂ in the formula (4) An acrylate oligomer represented by Chemical Formula 1 was prepared, wherein -C (= 0) OCH ₂ CH (OH) CH ₂ -and the remaining R were H.

Production Example  4.

In a reflux reactor filled with nitrogen, 500 g of toluene, 14 ml of triethylamine, 35.4 g (0.1 mol) of bisphenol florene (Osaka Gas, BPF) and 75.0 g (0.2 mol) of polyethylene glycol acrylate (Aldrich, 375 number average molecular weight) Put and reacted at 50 ℃ for 24 hours. The resulting salt is then separated by centrifugation and the solvent and unreacted material are removed by distillation under reduced pressure, where n = 2, R is H, x = 2, y and z is 0, a = 6, b and c is 0, Y is in formula 5 R ₃ = -OCH ₂ CH _2- , R ₁₆ = -OCH ₂ CH ₃ , the remaining R is prepared an acrylate oligomer represented by formula (1).

Production Example  5.

500 g of toluene, 14 ml of triethylamine, 39.3 g (0.1 mol) of bisphenol-A bischloroformate (Aldrich) and 160.0 g (0.2 mol) of polyethylene glycol acrylate (Aldrich, 800) Was added and reacted at 50 ° C for 24 hours. Thereafter, the resulting salt is separated by centrifugation, and the solvent and the unreacted substance are removed by distillation under reduced pressure, where n = 2, R is H, x is 2, y and z is 0, and a = 15, b, c is 0, Y is an acrylate oligomer represented by Formula 1 wherein R ₂ = -OCH ₂ CH _2- , R ₈ = -OCH ₂ CH ₃ , R ₅ , R ₁₁ is CH ₃ , and the remaining R is H in Formula 2 Was prepared.

Production Example  6.

200 g of toluene and 34.0 g (0.1 mol) of bisphenol ediglycidyl ether were added to a reflux reactor filled with nitrogen, followed by 160.0 g (0.2 mol) of polyethylene glycol acrylate (Aldrich, number average molecular weight 800) and benzyltriethylammonium. After adding 0.05 g of chloride, the mixture was reacted at 90 ° C. for 24 hours. Then, the unreacted material and the solvent were removed by distillation under reduced pressure, where n = 2, R is H, x is 2, y and z is 0, a = 15, b, c is 0, and Y is R ₂ = -CH ₂ -CH (OH) -CH ₂ O-, R ₈ = CH ₃ -CH (OH) -CH ₂ O-, R ₅ , R ₁₁ is CH ₃ , the remaining R is H represented by the formula (1) Rate oligomers were prepared.

Production Example  7.

n = 2, R is H, x is 2, y, z is 0, a = 3, b, c = 0, Y is R ₂ in Formula ₂ = -OCH ₂ CH _2- , R ₇ = -OCH ₂ CH ₃ and R ₁₁ , R ₅ is CH ₃ acrylate oligomer represented by the formula (1) (Miwon Corporation, M240) was prepared.

< Example > Manufacture of 2D / 3D Switching Lens

Example  One.

With respect to 100% by weight of the total composition, 35% by weight of the acrylate obtained in Preparation Example 1, 35% by weight of TiO ₂ particles (Degussa, P25), 10% by weight of phenoxyethyl methacrylate (Sartomer, SR340), phenoxy 15% by weight of ethylethyl acrylate (Sartomer, SR339), 1.5% by weight of photoinitiator 2,4,6-trimethylbenzoyl diphenylphosphine oxide, 1.5% by weight of photoinitiator methylbenzoylformate and additive bis (1,2,2,6 , 6-pentamethyl-4-piperidyl) sebacate 2.0% by weight of a vibrating ball mill (Vibratory Micro Mill (FRITSCH GmbH)) using a mixture for 3 hours at room temperature to prepare a composition.

Thereafter, the above-described composition was applied to one surface of ITO-PC (Teijin Co., Ltd.), placed on the frame of the lenticular roller, and a type-D bulb was mounted on an ultraviolet irradiation device (Fusion) to 900 mJ in the direction of the base layer. UV light of / cm ² was formed to form a lenticular lens portion of the embossed form of 190㎛ pitch, 32㎛ height on the top film side. The liquid crystal alignment layer was formed on the upper film and the lower film, and the upper and lower films were laminated after the liquid crystal was coated on the upper film and the liquid crystal was coated on the lower film. This produced a switching lens.

Example  2.

With respect to 100% by weight of the total composition, 35% by weight of the acrylate obtained in Preparation Example 1, 35% by weight of ZrO ₂ particles (MEL Chemicals, MELox Nanosize Undoped), 10% by weight of phenoxyethyl methacrylate (Sartomer, SR340) %, 15% by weight phenoxyethyl acrylate (Sartomer, SR339), 1.5% by weight photoinitiator 2,4,6-trimethylbenzoyl diphenylphosphine oxide, 1.5% by weight photoinitiator methylbenzoylformate, additive bis (1,2, A composition was prepared by mixing 2,6,6-pentamethyl-4-piperidyl) sebacate 2.0 wt% at room temperature using a vibratory micro mill (FRITSCH GmbH).

Thereafter, the above-described composition was applied to one surface of ITO-PC (Teijin Co., Ltd.), placed on the frame of the lenticular roller, and a type-D bulb was mounted on an ultraviolet irradiation device (Fusion) to 900 mJ in the direction of the base layer. It was prepared by irradiating UV of / cm ² by forming a lenticular lens portion of an intaglio shape having a pitch of 190 μm and a height of 32 μm on the top film side. The liquid crystal alignment layer was formed on the upper film and the lower film, and the upper and lower films were laminated after the liquid crystals were formed on the lower film and the liquid crystal was coated on the lower film. This produced a switching lens.

Example  3 ~ 7.

The switching lens was manufactured in the same manner as in Example 1, but instead of the acrylate obtained in Preparation Example 1, the switching lenses were prepared using the acrylates obtained in Preparation Examples 2 to 6, respectively. Forming a lens on the bottom film side (Example 3), Forming an engraved lenticular lens on the bottom film side (Example 4), Forming an embossed lenticular lens on the top plate side (Example 5), Engraving on the negative form It was produced by forming a curla lens on the upper film side or by forming an embossed lenticular lens on the lower film side (Example 7).

Example  8 ~ 10.

The switching lens was manufactured in the same manner as in Example 1, but instead of the acrylate obtained in Preparation Example 1, the switching lenses were prepared using the acrylates obtained in Preparation Examples 2 and 3, respectively, respectively. A lenticular lens of the form was formed on the upper film side (Example 8), an embossed lenticular lens was formed on the upper film side (Example 9), and an engraved lenticular lens was formed on the lower film side (Example 10) Prepared.

	Lenticular lens part
	shape	location	Refractive index
Example 1	relief	Place on the top side	1.7
Example 2	Intaglio	Place on the top side
Example 3	relief	Placed on the bottom side
Example 4	Intaglio	Placed on the bottom side
Example 5	relief	Place on the top side
Example 6	Intaglio	Place on the top side
Example 7	relief	Placed on the bottom side
Example 8	Intaglio	Place on the top side
Example 9	relief	Place on the top side
Example 10	Intaglio	Placed on the bottom side

Claims (14)

1. An upper plate 110 including an upper substrate 111 and an upper transparent electrode 112 formed on a lower surface of the upper substrate; And

   And a lower plate 120 including a lower substrate 121 and a lower transparent electrode 122 formed on an upper surface of the lower substrate.

   Between the upper plate 110 and the lower plate 120, the liquid crystal layer 140 including a lenticular lens unit 130 having two or more lenticular lenses and a liquid crystal alignment layer formed on upper and lower surfaces of the liquid crystal layer. Including,

   The lenticular lens unit 130 is made of an organic, inorganic hybrid resin, the refractive index is 2D / 3D switching lens, characterized in that the same as the high refractive index (n _e ) of the liquid crystal layer (140).
2. The method according to claim 1,

   2D / 3D switching lens, characterized in that the liquid crystal layer is disposed on the upper plate side, the lenticular lens portion is disposed on the lower plate side.
3. The method according to claim 1,

   2D / 3D switching lens, characterized in that the lenticular lens portion is disposed on the upper plate side, the liquid crystal layer is disposed on the lower plate side.
4. The method according to claim 2,

   2D / 3D switching lens, characterized in that the lenticular lens portion is in the form of an embossed or intaglio.
5. The method according to claim 3,

   2D / 3D switching lens, characterized in that the lenticular lens portion is in the form of an embossed or intaglio.
6. The method according to claim 1,

   The organic and inorganic hybrid resin is a 2D / 3D switching lens, characterized in that the refractive index is 1.53 to 1.8.
7. The method according to claim 1,

   The organic and inorganic hybrid resin is a 2D / 3D switching lens, characterized in that the UV curable resin.
8. The method according to claim 1,

   The organic and inorganic hybrid resin is a 2D / 3D switching lens, characterized in that is prepared from a resin composition comprising an organic compound, inorganic particles and photoinitiator.
9. The method according to claim 8,

   A 2D / 3D switching lens comprising 5 to 90% by weight of an organic compound, 5 to 90% by weight of an inorganic particle, and 0.01 to 10% by weight of a photoinitiator, based on the total weight of the organic and inorganic hybrid resin composition.
10. The method according to claim 8,

    2D / 3D switching lens, characterized in that the organic compound comprises a compound of formula (1).

    [Formula 1]

    

    In Formula 1, R is hydrogen or an alkyl group of C1 ~ C15,

    n is an integer of 1 or more,

    a, b, and c are each an integer equal to or greater than zero, and a + b + c ≥ 3,

    x, y and z are each an integer of 0 to 50, the same or different,

    Y is one selected from functional groups of Formulas 2 to 5,

     [Formula 2]

    

    In Formula 2, R1 to R12 are each a hydrogen, an alkyl group of C1 ~ C15, an aromatic cyclic compound of C6 ~ C30 or a functional group containing one or more oxygen, nitrogen, sulfur atoms, wherein one of R1 to R12 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K `} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer from 1 to 10, j is an integer from 0 to 10,

     [Formula 3]

    

    In Formula 3, R1 to R6 are each a hydrogen, an alkyl group of C1 ~ C15, an aromatic cyclic compound of C6 ~ C30 or a functional group containing one or more oxygen, nitrogen, sulfur atoms, wherein one of R1 to R6 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K `} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer from 1 to 10, j is an integer from 0 to 10,

     [Formula 4]

    

    In Formula 4, R1 to R10 are each a hydrogen, an alkyl group of C1 ~ C15, an aromatic cyclic compound of C6 ~ C30 or a functional group containing one or more oxygen, nitrogen, sulfur atoms, wherein one of R1 to R10 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K `} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer from 1 to 10, j is an integer from 0 to 10,

    [Formula 5]

    

    In Formula 5, R1 to R18 are each hydrogen, an alkyl group of C1 ~ C15, an aromatic cyclic compound of C6 ~ C30, or a functional group containing one or more oxygen, nitrogen, sulfur atoms, wherein one of R1 to R18 is -C _K H _2K O-, -C (= O) O- (CH ₂ ) _K -CH (OH)-(CH ₂ ) _{K`</sub> -,-(CH <sub>2</sub> ) <sub>K</sub> -CH (OH)-(CH <sub>2</sub> ) <sub>K `} O- or -C _j H _2j NHC (= O)-, where K, K 'is an integer from 1 to 10, j is an integer from 0 to 10.
11. The method according to claim 8,

    The inorganic particles are TiO ₂ , ZrO ₂ , In ₂ O ₃ , SnO ₂ , Y ₂ O ₃ , CaO, MgO, ZnO, SiO ₂ , SnO ₂ , Sb ₂ O ₅ , Nb ₂ O ₃ , ATO, SnO ₂ Sb 2D / 3D switching lens, characterized in that at least one selected from CeO ₂ and Al ₂ O ₃ .
12. The method according to claim 8,

    The photoinitiator is a phosphine oxide compound, a propane compound, a ketone compound, a formate compound, an acetophenone compound, a benzophenone compound, a thioxanthone compound, a benzoin compound, a triazine compound, and an oxime compound 2D / 3D switching lens, characterized in that at least one selected from.
13. The method according to claim 1,

    The lenticular lens unit is a 2D / 3D switching lens, characterized in that it comprises a lenticular lens pattern by transferring the master roll containing the pattern of the lenticular lens on the substrate, and then imprinted and hardened.
14. 2D / 3D display device comprising the 2D / 3D switching lens of claim 1.

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