WO2017026735A1 - Plaque de polarisation à grillage de fils et composant optique la comprenant - Google Patents

Plaque de polarisation à grillage de fils et composant optique la comprenant Download PDF

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Publication number
WO2017026735A1
WO2017026735A1 PCT/KR2016/008578 KR2016008578W WO2017026735A1 WO 2017026735 A1 WO2017026735 A1 WO 2017026735A1 KR 2016008578 W KR2016008578 W KR 2016008578W WO 2017026735 A1 WO2017026735 A1 WO 2017026735A1
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Prior art keywords
wire grid
lattice
resin
metal
shaped convex
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PCT/KR2016/008578
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English (en)
Korean (ko)
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황홍구
김시민
채헌승
김경종
남시욱
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코오롱인더스트리 주식회사
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Publication of WO2017026735A1 publication Critical patent/WO2017026735A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • 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

Definitions

  • the present invention relates to a wire grid polarizer and an optical component including the same, and more particularly to a nano wire grid polarizer and an optical component including the same that can achieve a polarization efficiency and brightness enhancement effect at the same time.
  • the polarizing plate transmits or reflects light in a specific direction among electromagnetic waves.
  • two polarizing plates are used in a liquid crystal display (LCD), so that liquid crystals in the liquid crystal cell cause optical interaction to implement an image.
  • LCD liquid crystal display
  • Polarizers using absorption type polarizing films are employed in polarizers that are mainly used in liquid crystal displays (LCDs), and in the case of absorption type polarizing films, iodine or dichroic dyes are adsorbed on polyvinyl alcohol (PVA) films, and a predetermined direction thereof is used. It is prepared by stretching. In this case, however, the mechanical strength of the transmission axis itself is weak, shrinks due to heat or moisture, and the polarization function is significantly reduced. Therefore, the light utilization efficiency is theoretically 50 because only the light vibrating in a specific direction passes. Can't exceed%
  • a wire grid polarizer (hereinafter, WGP) refers to an array in which metal wires are arranged in parallel, and polarization components parallel to the metal grid are reflected and vertical polarization components are transmitted, and the reflected light is reused. It is possible to manufacture an LCD having high luminance characteristics.
  • WGP light absorption occurs when the arrangement period of the metal lattice, that is, the wire spacing is close to or larger than the wavelength of the incident electromagnetic wave, and the loss of light due to absorption is minimized only when the arrangement period of the metal lattice is sufficiently small.
  • a first grating layer having at least one first lattice pattern on a substrate and a second metal layer formed on the first lattice pattern A second lattice layer having at least one lattice pattern, and a light absorbing layer stacked on the second lattice layer to absorb light from the outside, thereby improving luminance without decreasing contrast ratio (CR).
  • WGP which can be disclosed, and in the Republic of Korea Patent No.
  • the shape of the pattern is different for each region, and the period (P), height (H), width (W) and duty cycle (DC) of the pattern Disclosed is a liquid crystal display device capable of improving polarization performance and light efficiency by including at least one of different wire grid polarizers for each region.
  • the polarization efficiency for determining the contrast ratio (CR) of the display may be excellent as the S polarization transmittance (T S ) is as low as possible, and the brightness of the display, that is, the brightness is high, the P polarization transmittance (T P ). The more it can be improved.
  • P polarization is 100% transmitted and S polarization is not 100% absorbed or reflected. Therefore, in order to improve the P polarization transmittance (T P ), reducing the width and height of the metal lattice increases S polarization. Transmittance (T S ) can also be increased together, so that the polarization efficiency is rather low, and when the line width is widened to increase the polarization efficiency, the P polarization transmittance is lowered. That is, the P polarization transmittance and the polarization efficiency act in a trade-off relationship.
  • Theoretical methods to improve the P polarization transmittance (T P ) and the polarization efficiency simultaneously are to reduce the pitch (Ptich, distance from the lattice start point to the next lattice start point) at the same line width, that is, to reduce the distance between metal lattice. Can be.
  • the pitch Ptich, distance from the lattice start point to the next lattice start point
  • T S S polarization transmittance transmittance
  • the present invention includes a pattern capable of stacking more metals in the same range of line widths and pitches, and with the gratings located on different layers staggered together without substantially controlling the pitch of the pattern, By inducing an effect such as a narrowing of the gap to provide a multi-layer laminated wire grid polarizer and an optical component including the P-polarized transmittance and the polarization efficiency improved at the same time the trade-off relationship.
  • a first preferred embodiment of the present invention for achieving the above problem is the substrate layer 110; A resin layer 120 formed on at least one surface of the base layer and including an uneven pattern formed by the lattice-shaped convex portion 200; And a wire grid unit 100 including at least two metal grid 130 pattern layers formed on the lattice-shaped convex portions of the resin layer, and the lattice-shaped convex portion 200 is formed on the left side of the convex portion. It is a wire grid polarizer, characterized in that the at least one of the sides and the inclined shape including at least one section inclined to form an acute angle with the ground of the surface and the right side.
  • the grid-shaped convex part 200 includes at least one side protrusion and side depressions by at least one side part including at least one section of an inclined or curved section, and the side protrusions and side depressions
  • the distance between points P2 is 1 to 30 nm It may be desirable.
  • the metal lattice may be formed in contact with the lattice-shaped convex portion, and may be preferably formed so that the lamination width of the lattice-shaped convex portion formed in the horizontal direction at the largest protrusion by filling the metal is 10 nm to 100 nm.
  • the virtual having the same width as the line width of each metal grating in the vertical direction from the bottom of all the metal grating 130 of the stacked wire grid unit 100 Assuming that a virtual shadow formed in any grid can form a shadow grid 300 having a width that overlaps or extends by one or more adjacent shadows that abut the interface.
  • the wire grid polarizer may have a value of F.F (Fill Factor) calculated by Equation 1 below 1.05.
  • the metal grating 130 has a height 131 per unit grid of 1 to 1000 nm, a line width 132 of 1 to 140 nm, and a point at which the next grating starts at a point where any grating starts.
  • the pitch 133 defined by the distance to may be 50 to 200 nm.
  • the wire grid unit according to the first embodiment is selected from polyvinyl resin, silicone resin, acrylic resin, epoxy resin, phenol resin, polyester resin, styrene resin, alkyd resin, amino resin and polyurethane resin. It can be laminated
  • the wire grid polarizer according to the first embodiment may have a P polarization transmittance of 50% to 99%, an S polarization transmittance of less than 1%, and a polarization efficiency of 95% to 100%.
  • the present invention uses the optical component including the wire grid polarizer according to the first embodiment as a second preferred embodiment of the present invention, the optical component according to the second embodiment has a contrast ratio ( Contrast ratio (CR) may be 500 to 1,000,000.
  • Contrast ratio (CR) may be 500 to 1,000,000.
  • the polarization efficiency can be improved without decreasing the P polarization transmittance. have. Further, the P polarization transmittance and the polarization efficiency, which were considered to be a trade-off relationship, can be improved simultaneously without substantially controlling the pitch value of the grating.
  • FIG. 1 is a cross-sectional view showing an example of the wire grid polarizer of the present invention in which units are stacked in the same direction with the wire grid unit having a resin layer and a metal pattern layer formed on one surface of the base layer as repeating units.
  • FIG. 2 is a perspective view of FIG. 1.
  • FIG. 3 is a wire grid unit in which a resin layer and a metal pattern layer are formed on both sides of a base layer, and a wire grid unit in which a resin layer and a metal pattern layer are formed only on one surface of the base layer is laminated with the metal pattern layers facing each other. It is sectional drawing which shows an example of a wire grid polarizing plate.
  • FIG. 4 is a cross-sectional view showing an example of various shapes of the grid-shaped convex portion 200 of the present invention.
  • FIG. 5 is a cross-sectional view showing the relationship between the maximum protrusions 210 and the maximum depressions 220 in any of the grid-shaped convex portions with various shapes of the grid-shaped convex portion 200 of the present invention.
  • FIG. 6 is an enlarged view of a portion of the wire grid polarizer of the present invention and a shadow grid 300 formed by overlapping virtual shadows S1, S2, and S3 vertically formed from each grid toward the bottom surface and the respective shadows. ) Is an imaginary diagram.
  • lattice convex portion 210 maximum protrusion of lattice convex portion
  • WGP wire grid polarizer
  • the wire grid polarizer of the present invention includes a grid-shaped convex portion 200 having an irregular shape including at least one section in which a side portion in at least one direction of the left and right surfaces of the convex portion is curved or inclined to form an acute angle with the ground. It may be characterized by having.
  • the wire grid polarizer of the present invention may have a P polarization transmittance of 50% to 99%, an S polarization transmittance of less than 1%, and a polarization efficiency of 95% to 100%. Accordingly, when applied to an optical component such as a liquid crystal display device, it is possible to provide a display excellent in brightness and CR characteristics.
  • the droplet display device in the present invention compared to the PVA-type absorption polarizing film The relative luminance may be 100 to 150%, and the contrast ratio may be 500 to 1,000,000.
  • the present invention provides an optical component including the wire grid polarizer.
  • the optical part of the present invention may be representatively a liquid crystal display device, but is not necessarily limited thereto.
  • the WGP of the present invention uses a conventional wire grid having a configuration of a base layer 110, a resin layer 120, and a metal lattice 130 pattern layer as one wire grid unit 100.
  • the wire grid unit of the present invention may have a cross-sectional structure in which a resin layer and a metal pattern layer are formed only on one surface of the base layer, as shown in FIG. 1, and as shown in FIG. 2, a resin layer and It may be a double-sided structure in which metal pattern layers are formed, respectively.
  • the upper surface pattern and the lower surface pattern do not necessarily have to coincide with the position of the pattern convex portion and the concave portion.
  • the wire grid unit is a direction in which the metal grid pattern layers of the different wire grid units facing each other based on the stacking portion; Substrate layers facing each other; And the base layer and the metal lattice may be stacked in at least one direction facing each other.
  • 1 shows a structure in which the base layer and the metal lattice are stacked uniformly in the direction facing each other, but the direction of the arbitrary wire grid unit is reversed so that some of them face each other metal lattice and some of the base layers face each other. May be
  • the WGP of the present invention may be laminated by mixing a wire grid unit having a double-sided structure and a wire grid having a cross-sectional structure, as shown in FIG.
  • the metal lattice of the cross-sectional structure may be stacked in a direction facing the metal lattice of the double-sided structure, and the base layer of the cross-sectional structure may face the metal lattice of the double-sided structure It may be laminated in the direction.
  • WGP which is composed of a single layer
  • the uneven pattern must be formed very precisely in order to narrow the gap between the wire grids or the metal grids in order to increase the polarization efficiency.However, it is very difficult to realize a more precise pattern in the microstructure of the micro or nano size. It is difficult.
  • the P polarization transmittance may decrease. Accordingly, there is a limit to improving P polarization transmittance and polarization efficiency through a single layer of WGP.
  • wire grid units having different height relationships are staggered in position of the grid pattern, so that the lattice of one layer passes between the lattice spacing of the lattice located on the other layer. On the whole, it can be as if the spacing between grids is narrowed. That is, it is possible to obtain the effect of narrowing the distance between gratings in an advantageous manner without substantially controlling the distance between metal gratings, which is the limit point in the conventional WGP.
  • the resin layer includes polyvinyl resin, silicone resin, acrylic resin, epoxy resin, methacrylic resin, phenol resin, polyester resin, styrene resin, alkyd resin, amino resin and polyurethane resin. It is preferable that it is formed with 1 or more types of curable resin chosen from the group to do.
  • curable resins include unsaturated polyester, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, normal butyl methacrylate, normal butyl methyl methacrylate, acrylic acid, methacrylic acid, and hydride.
  • the metal grid pattern in the present invention may be formed from any one metal or conductor selected from the group comprising aluminum, copper, chromium, platinum, gold, silver, nickel and alloys thereof, reflectivity and economic Considering it may be more desirable to use aluminum and alloys thereof.
  • the method of stacking a metal lead on the curable resin includes a method of sputtering, vacuum thermal deposition, or a dry etching method of simultaneously etching a polymer and a metal to form a metal lead layer, and the method of manufacturing the same is not limited thereto.
  • the substrate layer in the present invention is a triacetyl cellulose (TAC) film, polymethyl methacrylate (PMMA) film, polyethylene terephthalate film, polycarbonate film, polypropylene film, polyethylene film, polystyrene film, polyepoxy film, ring Type olefin polymer (COP) film, cyclic olefin copolymer (COC) film, copolymer film of polycarbonate resin and cyclic olefin polymer and copolymer film of polycarbonate resin and cyclic olefin copolymer It may be any one of the transparent film or glass selected from the group containing.
  • a substrate employed in consideration of polarization characteristics may be advantageously an isotropic substrate having a retardation (product of birefringence and film thickness) of 50 nm or less, more preferably 20 nm or less.
  • a retardation product of birefringence and film thickness
  • the base material layer formed on the upper side of it may be important to apply an isotropic base material.
  • the present invention is not necessarily limited thereto, but the thickness of the base layer may be 5 ⁇ m to 250 ⁇ m, and more preferably 20 ⁇ m to 125 ⁇ m, to favor mechanical strength and flexibility .
  • the wire grid unit is a polyvinyl resin, a silicone resin, an acrylic resin, an epoxy resin, a phenol resin, a polyester resin, a styrene resin, an alkyd resin, an amino resin, and a polyurethane resin. It may be laminated by the stacking unit 140 including one or more selected resins.
  • the stacking part serves to bond the wire grid units so as to prevent the separation between the wire grid units, but it should not affect the optical properties, so it is desirable to have a high visible light transmittance.
  • resin of a laminated part contacts a metal lead, it is preferable to select so that the metal lead may not be oxidized by resin.
  • the grid-shaped convex portion 200 has a monotonous side portion as in the prior art, not a shape that is vertically straight, but is inclined obliquely or the side portion As the bend is formed in the prior art may have a different pattern.
  • the grid-shaped convex portion forms a valley on at least one side of the left side and the right side by the unique shape of the grid-shaped convex portion, and since the formed valley may be filled with metal, the line width of the relatively same range, Compared with the conventional WGP showing the height and pitch, the metal lamination amount can be increased efficiently, and as a result, the polarization efficiency can be improved without lowering the P polarization transmittance.
  • the grid-shaped convex portion 200 may include at least one of the side protrusion and the side recessed portion by the side portion including at least one section inclined or curved.
  • the side protrusions and the side depressions described in the present invention are judged as the side protrusions, and the portions forming the peaks from the side surfaces of the lattice convex portions, respectively, and the side grooves are formed.
  • the protrusion and the depression are in the form of only one, it is preferable that the depression is located closer to the inward direction of the lattice convex portion, but if the protrusion includes two or more protrusions or depressions, any protrusion is lattice than any depression. It may be located closer to the inward direction of the convex portion. That is, the protrusion and the depression are not necessarily determined according to the relative position, and it is preferable to judge by the shape.
  • the shape of the lattice-shaped convex portion is not necessarily symmetrical, and may have irregularities in the shape of the protrusions and the depressions in the left and right directions or may have the protrusions and the depressions in only one direction.
  • the distance deviation in the horizontal direction between the largest protrusion and the largest depression, that is, the distance between P1 and P2 is less than 1 nm
  • the effect of improving the amount of metal lamination by the depression is insignificant, and the depth is deeply recessed so that the distance exceeds 30 nm. Forming a part is very difficult to implement in a micropattern and even when formed, it can be difficult to completely fill the metal up to the depth of the depression.
  • the metal is filled in the depression so that the amount of stacking of the metal can be easily increased as compared with the general pattern having the same line width and pitch.
  • WGP since the polarization and reflection of light are determined by the metal pattern layer, when the stacking amount of metal is increased, the reflectance may be improved and the polarization efficiency may be improved.
  • the amount of stacking of metal is excessively increased to improve the reflectance. In this case, if the light transmission period becomes too narrow, the luminance may be lowered.
  • the metal is filled in the valley formed on the side surface without narrowing the transmission section of the light, the polarization efficiency can be improved without decreasing the luminance in the same range of pitch and line width conditions.
  • the lattice-shaped convex portion 200 has the width of the convex portion at a constant ratio from the upper end to the lower end with respect to the ground and the horizontal direction based on the convex cross-sectional shape as illustrated in FIG. 4.
  • the decreasing shape or the convex portion may be a shape inclined to one side while maintaining a constant width.
  • all inclined sections of both sides form an acute angle with the ground, and the lattice convex part is inclined to one side while maintaining a constant width.
  • an inclination that forms an acute angle with the ground is generated from the side of the lattice-shaped convex part.
  • the side portion includes a curved section, the width of the convex portion increases and decreases relative to the ground and the horizontal direction based on the cross-sectional shape of the convex portion, the section in which the width of the convex portion increases and is constant, the convex portion A section where the width decreases and increases, a section where the width of the convexity decreases, a section that becomes constant, the width of the convexity is constant, a section that increases, the width of the convexity is constant, the section that decreases and the constant width is maintained, but the inclined direction of the convexity is changed. It may have a shape including at least one curved section of the section. At this time, the curved section in the present invention may mean both the pointed and curved form connected.
  • the line width is 5 to 100nm
  • the height in the direction perpendicular to the surface is 10 to 500nm in terms of being able to imprint close to the desired shape.
  • the line width and height of the lattice-shaped convex portion being too small outside the above range is very difficult to implement the pattern itself, and the pattern aggregation may occur when the line width and height are too large outside the above range.
  • the grid-shaped convex portion is defined as the distance from the leftmost vertical line drawn from an arbitrary convex portion to the left-most vertical line drawn from an adjacent lattice convex portion when drawing an imaginary vertical line perpendicular to the ground while contacting the outer edge of the convex portion. It may be desirable for the pitch value to be 20-200 nm. It is difficult to secure a light transmission path after the metal lattice having a pitch value of less than 20 nm, and when the pitch value exceeds 200 nm, it may be difficult to expect excellent polarization characteristics (extinction ratio) for visible light.
  • the metal grating 130 has a height 131 per unit grid of 1 to 1000 nm, a line width 132 of 1 to 140 nm, and a point from which an arbitrary grating starts to a point where the next grating starts.
  • the pitch 133 which is defined as a distance of, may be 50 to 200 nm.
  • the more preferable height of the metal lattice may be 10 to 500 nm and the line width may be 1 to 100 nm, and the more preferable height may be 40 to 250 nm and the line width may be 5 to 50 nm.
  • the polarization efficiency can be increased while maintaining a high P polarization transmittance.
  • the spacing between the gratings positioned horizontally is advantageous to satisfy the above range, more preferably 50 to 200 nm, more preferably 80 to 150 nm.
  • the metal lattice 130 has a vertical gap (134) with respect to the lattice on the opposite side facing each other with respect to the vertical direction from the arbitrary lattice centers, and may be 0.05 to 500 ⁇ m, for thinning More preferably, it may be 0.05 to 300 ⁇ m, more preferably 0.3 to 150 ⁇ m, but is not necessarily limited thereto.
  • the metal grating 120 is formed in contact with the lattice convex portion 200 of the WGP, wherein the metal is filled from the maximum depression of the lattice convex portion in the horizontal direction from the maximum protrusion
  • the lamination width of the metal lattice i.e., formed so that the thickness of the metal lattice from the largest protrusion of the lattice-shaped convex portion is 10 nm to 100 nm is preferable in view of more effectively improving polarization efficiency.
  • the metal lattice does not necessarily have to be formed higher than the lattice-shaped convex portion, the metal lattice formed to have a thickness of 10 nm to 200 m in the vertical direction from the uppermost end of the lattice-shaped convex portion may be more effective in improving the polarization efficiency.
  • the metal grating is in the form of a lattice such as a prism and a lenticular, and is formed on the convex portion or the concave portion of the resin layer pattern, and the shape thereof may be varied by the deposition method, so that the cross-sectional shape of the metal grating is particularly limited. It doesn't work.
  • the cross-sectional shape of the pattern is a shape in which a semicircle, an ellipse, a regular polygon, a polygon, a rounded polygon, a 'b' shape, a fan shape, a boomerang shape, a dome shape, and a sinusoidal shape are repeated.
  • the pattern may be repeated in distinctly angular form or may be smoothly connected and repeated in a curved curve.
  • the shapes of the patterns between the wire grid units do not necessarily need to coincide with each other, and may be partially distorted under the load in the lamination process.
  • the metal lattice pattern layer in the present invention is basically sufficient to satisfy the above range, except that all the unit lattice on the metal lattice pattern and all the wicked metal lattice included in the resin layer are perpendicular to the bottom surface. Assuming that a virtual shadow having a width equal to the line width of each metal grid is formed, the shadow formed in any grid overlaps or extends the width by one or more other adjacent shadow (s) that the interface touches. It may be desirable to form a shadow grid 300 having a line width greater than or equal to the metal lattice line width formed on the uneven pattern of the resin layer in view of further improving P polarization transmittance and polarization efficiency.
  • the WGP is a schematic diagram of a WGP having three layers of metal lattice in the WGP stacked structure.
  • the shadow on the first floor is S1
  • the shadow on the second floor is S2
  • the shadow on the third floor is Each is indicated by S3.
  • the shadow S1 overlaps S2 and S3, respectively, to form a single shadow connected as shown in FIG. 6.
  • the shadow S1 which is formed by one grid due to the overlapping of shadows or the contact of a boundary (not shown), is formed. Shadows with a width that extends beyond the width of S2 or S3) can be defined as a 'shadow grid 300'.
  • the width of the shadow grating is not an actual line width of each metal grating, the width of the shadow grating may serve as a factor for narrowing the gap between the metal gratings without affecting the P polarization transmittance at all.
  • the shadow grids may also overlap or taste with each other, and in this case, shadows may be formed over the entire bottom surface, and higher polarization efficiency may be achieved when all shadows are formed on the bottom surface.
  • the wire grid polarizing plate preferably has a F.F (Fill Factor) value calculated by Equation 1 below by the concept of the shadow grating.
  • fill factor represents the ratio of the metal lattice line width to the pitch of the metal lattice in a single layer, and the closer the value of F.F is to 1, the higher the polarization efficiency is. According to this analysis, at the same pitch, the larger the line width, the closer the value of F.F can be.
  • the present invention which does not control the pitch, it may be more easily understood to apply the ratio of the line width of the shadow grating to the line width of the metal grating, rather than the conventional F.F calculation formula that substitutes the pitch value.
  • FF is the line width of the shadow grating to the line width of the metal grating. It is to be interpreted as the ratio of.
  • the value of FF is 1.05 or more. It is preferable.
  • At least two or more layers, more preferably three or more layers may be preferable in terms of improving polarization efficiency, but as the metal lattice is excessively stacked, the manufacturing process cost increases. Since the thickness of the polarizing film becomes thick, it is advantageous to stack up to 100, more preferably only 10. In the present invention, in order to satisfy the total height of the WGP to 1um to 500um in consideration of this, it may be preferable to make the resin layer thickness of 0.05 to 100 ⁇ m, but is not necessarily limited thereto.
  • Wire grid unit fabrication formed with a lattice-shaped convex portion having a protrusion and a depression.
  • WGPs of Preparation Examples 1 to 2 including lattice-shaped convex portions and metal grids satisfying the conditions shown in Table 1 were prepared.
  • the base material was coated with an acrylic photosensitive composition on the upper surface of the TAC using a triacetyl cellulose (TAC) film having a thickness of 80 ⁇ m, and then the ultraviolet (high pressure mercury lamp, 20 W / cm 2 ) was irradiated from the base material layer side, and the resin layer which formed the lattice-shaped convex part was produced.
  • the metal lattice was formed by partially depositing aluminum on the resin layer thus formed through sputtering.
  • the WGP of Comparative Preparation Examples 1 to 3 was prepared, which satisfies the conditions shown in Table 1 below, but which includes a conventional lattice-shaped convex portion in which protrusions and depressions do not exist, unlike Production Examples 1 to 4 above.
  • the resin layer, the metal pattern layer, and the base material layer used for the WGP of Comparative Manufacturing Examples 1 and 2 were the same as those used in Production Examples 1 to 4 above.
  • a wire grid unit was manufactured in the same manner as in Preparation Example 1, but the upper and lower surfaces of the triacetyl cellulose (TAC) film were formed as a double-sided wire grid unit by forming a resin layer and a metal lattice. Two pieces were laminated to produce a four-layer WGP in which a double-sided wire grid unit was laminated.
  • TAC triacetyl cellulose
  • Example 4 WGP in which a single-sided wire grid unit and a double-sided wire grid unit are mixed and stacked
  • a three-layer WGP having a structure as shown in FIG. 3 was manufactured by using each of the cross-sectional wire grid units manufactured in Preparation Example 1 and the double-sided wire grid units prepared in Example 4, respectively.
  • Example 5 WGP in which Example 1 was laminated in two layers
  • T P P polarization transmittance
  • T S was measured, and the polarization efficiency was calculated by the following Equation 2 using the values measured therefrom, and the results are reflected in Table 2 below.
  • the polarizers of Examples 1 to 5, Comparative Preparation Example 1 (general lattice tomography type WGP) and Comparative Example 1 prepared above were attached to each other to analyze luminance.
  • C.R contrast ratio
  • a commercially available PVA-type absorbing polarizer was used as a control (Comparative Example 1).
  • the highest luminance (Maximum Luminance, White) and the lowest luminance (Minimum Luminance, Black) were analyzed by rotating the WGP attached to the lower surface of the liquid crystal display panel 360 degrees.
  • Luminance measurement was performed by measuring the luminance at any of five points using BM-7A (Japan TOPCON Co., Ltd.), and evaluating the average value.
  • Example 1 605 126.0% 0.25 62.5% 2420
  • Example 2 601 125.2% 0.20 50.0% 3005
  • Example 3 611 127.3% 0.19 47.5% 3216
  • Example 4 603 125.6% 0.21 52.5% 2871
  • Example 5 635 132.3% 1.51 377.5% 421 Comparative Production
  • Example 1 601 125.2% 2.78 695.0% 216
  • Comparative Example 1 480 100.0% 0.4 100.0% 1200

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Abstract

La présente invention concerne une plaque de polarisation à grillage de fils et un composant optique la comprenant, la plaque de polarisation à grillage de fils ayant une structure comprenant : une couche de substrat (110) ; une couche de résine (120) formée sur au moins une surface de la couche de substrat et comprenant un motif irrégulier créé par des parties convexes du type treillis ; et au moins deux unités à grillage de fils (100) qui sont empilées, les unités à grillage de fils comprenant une couche de motif de treillis métallique (130) formée sur les parties convexes du type treillis de la couche de résine, les parties convexes du type treillis (200) ayant une forme amorphe selon laquelle une partie de surface latérale du côté gauche et/ou droit des parties convexes est incurvée ou comprend une ou plusieurs sections qui sont disposées en mosaïque de façon à former un angle aigu avec le sol.
PCT/KR2016/008578 2015-08-07 2016-08-03 Plaque de polarisation à grillage de fils et composant optique la comprenant WO2017026735A1 (fr)

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KR10-2015-0111676 2015-08-07
KR1020150111676A KR20170017557A (ko) 2015-08-07 2015-08-07 와이어 그리드 편광판 및 이를 포함한 액정표시장치

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CN112444900A (zh) * 2019-08-27 2021-03-05 莫克斯泰克公司 具有倾斜支撑肋的线栅偏振器

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KR20090123865A (ko) * 2007-02-27 2009-12-02 니폰 제온 가부시키가이샤 그리드 편광자
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KR101340900B1 (ko) * 2007-04-10 2013-12-13 삼성디스플레이 주식회사 이중층 구조의 와이어 그리드 편광자 및 그 제조 방법
US20140293142A1 (en) * 2011-10-14 2014-10-02 Asahi Kasei E-Materials Corporation Wire grid polarizing plate and projection type image display device

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KR20090108592A (ko) * 2007-01-12 2009-10-15 도레이 카부시키가이샤 편광판 및 이것을 사용한 액정표시장치
KR20090123865A (ko) * 2007-02-27 2009-12-02 니폰 제온 가부시키가이샤 그리드 편광자
KR101340900B1 (ko) * 2007-04-10 2013-12-13 삼성디스플레이 주식회사 이중층 구조의 와이어 그리드 편광자 및 그 제조 방법
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US20140293142A1 (en) * 2011-10-14 2014-10-02 Asahi Kasei E-Materials Corporation Wire grid polarizing plate and projection type image display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112444900A (zh) * 2019-08-27 2021-03-05 莫克斯泰克公司 具有倾斜支撑肋的线栅偏振器
CN112444900B (zh) * 2019-08-27 2024-05-03 莫克斯泰克公司 线栅偏振器

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