WO2011152422A1 - 偏光板及び偏光板の製造方法 - Google Patents
偏光板及び偏光板の製造方法 Download PDFInfo
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- WO2011152422A1 WO2011152422A1 PCT/JP2011/062534 JP2011062534W WO2011152422A1 WO 2011152422 A1 WO2011152422 A1 WO 2011152422A1 JP 2011062534 W JP2011062534 W JP 2011062534W WO 2011152422 A1 WO2011152422 A1 WO 2011152422A1
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- polarizing plate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
- G02B2207/101—Nanooptics
Definitions
- the present invention relates to a polarizing plate that separates incident light into transmitted light and reflected light according to the polarization direction, and a method of manufacturing the polarizing plate.
- a polarizing film in which an iodine compound is adsorbed on a polyvinyl alcohol (PVA) film and stretched and oriented to develop visible light dichroism is often used.
- PVA polyvinyl alcohol
- the polarizing film is sandwiched from both sides by a transparent film such as triacetyl cellulose (TAC) to ensure mechanical strength, heat resistance, and moisture resistance, and then hard-coded to prevent scratches and dirt.
- TAC triacetyl cellulose
- the light of the polarization component that does not pass among the light incident on the polarizing film is absorbed in the polarizing film and released as heat to the outside of the film. For this reason, when intense light is irradiated, there exists a problem that the temperature of a film rises by heat_generation
- a polarizing plate composed entirely of an inorganic material.
- Typical examples of the thin type are a polarizing glass and a wire grid polarizing plate.
- the polarizing glass is made of metal island-like fine particles deposited in the glass, and exhibits absorption dichroism by anisotropy of plasma resonance absorption of the fine particles. Polarized components that do not pass are absorbed but have high heat resistance because they are composed of an inorganic material.
- the wire grid polarizer a wire grid made of fine metal wires having a period equal to or less than the wavelength of light is formed on the surface of the substrate (see Patent Document 1).
- This wire grid polarizing plate reflects a polarized component that does not pass through free electron plasma oscillation, and thus has an advantage that incident light can be used more effectively.
- Polarizing plates made of these inorganic materials have been used as polarizing plates for liquid crystal projectors, which do not have the problem of deterioration in characteristics due to heat resistance found in organic polarizing films, and are irradiated with strong lamp light.
- these inorganic polarizing plates do not contain organic material components that decompose at high temperatures, high heat resistance can be obtained, but polarizing films such as wire grids and fine particles on the substrate surface like wire grid polarizing plates and fine particle type polarizing plates.
- polarizing films such as wire grids and fine particles on the substrate surface like wire grid polarizing plates and fine particle type polarizing plates.
- the characteristics may be deteriorated due to oxidation from the surface in a high humidity or high temperature environment.
- it is effective to coat a wire grid made of metal wires or metal fine particles with some protective film.
- the protective film an organic monomolecular layer, an oxide film such as SiO 2 or Al 2 O 3 generally used as a barrier layer of a semiconductor device, or a nitride film such as SiN can be used.
- Patent Document 3 describes that the reliability of the wire grid polarizer is improved by coating with a monolayer of a corrosion inhibitor made of aluminophosphonate of 10 nm or less. According to this, since the wire grid polarizing plate has a nano-level microstructure, if the materials and forming methods usually used for corrosion resistance are applied as they are, the optical characteristics may be significantly deteriorated. It is described that there is.
- Patent Document 4 describes that the environment resistance of the wire grid polarizer is improved by covering the surface of Al constituting the wire grid. Although a surface thermal oxide film by heat treatment of Al is used here, this method has an advantage that the conductive base Al film necessary for electron beam drawing can be thermally oxidized together, and this portion can be made transparent. . Accordingly, it is also described that there is no need to remove the base film using etching, the lift-off method can be used as a patterning method, and the instability of the etching process can be avoided.
- wire grid polarizing plates and fine particle polarizing plates are coated with a protective film in order to enhance environmental resistance.
- a fine structure exists on the surface such as a wire grid or fine particles
- the protective film even when the same material is used as the protective film, there is a problem that the effect of improving the reliability varies significantly depending on the formation method.
- This alteration of the polarizing film tends to proceed along the grid in which the polarizing material is arranged due to the structure of the wire grid polarizing plate and the fine particle type polarizing plate, even if the defect itself is outside the effective range of the polarizing plate.
- the altered region may expand within the effective range over time.
- Such defects in the protective film include those that occur on the cut end face of the substrate in addition to those inherent in the film itself such as pinholes.
- a part of the protective film formed on the polarizing film by dicing or scribing is used. It can be destroyed.
- the cut end surface portion of the substrate has a high possibility of foreign matter adhering during handling and the like, and this is also one of the reasons that deterioration tends to proceed after the individual pieces.
- an object of the present invention is to provide a highly reliable polarizing plate and a method for manufacturing such a polarizing plate even under high temperature and high humidity environments.
- the polarizing plate according to the present invention has a non-formation region where no grid is formed on the peripheral edge of the substrate.
- a pattern for forming a grid on a base film formed on the entire surface of the substrate and a pattern for forming a non-formation region not forming the grid on the peripheral edge of the substrate are formed. And a step of forming the grid and the non-formation region using the base film, and a step of forming a protective film for protecting the grid.
- the polarizing film since the region where the grid is not formed is provided in the peripheral portion of the substrate, the polarizing film does not deteriorate even when the protective film on the peripheral portion of the substrate is broken.
- FIG. 1 is a cross-sectional view showing a wire grid polarizer.
- FIG. 2 is a cross-sectional view showing a fine particle type polarizing plate.
- FIG. 3 is a plan view showing the polarizing plate.
- 4A is a view showing a polarizing plate through which light is transmitted
- FIG. 4B is a photograph showing the polarizing plate according to FIG. 4A.
- the photographer's finger is shown at the left end.
- FIG. 5A is a view showing a conventional polarizing plate that transmits light
- FIG. 5B is a photograph showing the polarizing plate according to FIG. 5A.
- the photographer's finger is shown at the left end.
- the outline of the camera is shown in an arc shape.
- FIG. 6 is a cross-sectional view showing the peripheral edge of the substrate.
- FIG. 7 is a plan view showing another polarizing plate.
- FIG. 8 is a plan view showing another polarizing plate.
- 9A to 9F are diagrams showing a manufacturing process of the wire grid polarizer.
- 10A to 10G are diagrams showing a manufacturing process of the fine particle type polarizing plate.
- a polarizing plate to which the present invention is applied and a manufacturing method thereof will be described in detail with reference to the drawings.
- a wire grid 3 made of fine metal wires having a pitch equal to or smaller than the wavelength of light is formed on a substrate 2.
- a wire grid polarizer 1A in which a protective film 4 is formed over the entire surface of the substrate 2, or a grid pattern 6 having a pitch less than the wavelength of light is formed on the substrate 5 as shown in FIG.
- a fine particle type polarizing plate 1B in which fine particles 7 are arranged on the grid pattern 6 via a metal layer 9 and a protective film 8 is formed over the entire surface of the substrate 5.
- the polarizing plate 1 does not form a grid G in which a polarizing film such as fine particles 7 arranged on the wire grid 3 or the grid pattern 6 is formed on the periphery of the substrates 2 and 5.
- a region (hereinafter referred to as “non-forming region 10”) is provided.
- the polarizing plate 1 can be applied to the grid G from the peripheral portion of the substrates 2 and 5 even when defects occur in the protective films 4 and 8 formed on the peripheral portions of the substrates 2 and 5 due to cutting and separating. It is possible to avoid deterioration of the polarizing film traveling along.
- any glass or other optically transparent substrate can be used.
- a substrate having high heat resistance and heat dissipation is often used in order to prevent the polarizing film from being destroyed by heat generated by absorption.
- a quartz substrate not only has a higher thermal conductivity than glass, but also has the same composition as quartz glass, so it is convenient when etching the substrate itself to improve the optical characteristics of the polarizing plate.
- a sapphire substrate it has excellent heat dissipation characteristics because it has a higher thermal conductivity than quartz, and even with the same cooling configuration, the substrate temperature can be kept lower than that of quartz, and the temperature of the optical system itself can be suppressed. There is an advantage that can be.
- the polarizing film such as the fine particles 7 arranged on the wire grid 3 or the grid pattern 6, for example, in the case of the wire grid polarizing plate 1A, Al or AlSi can be used as a polarizing film material. There is no limit. On the other hand, Ge, Si, or the like is used in the case of the fine particle type polarizing plate 1B, but this is not limited to these materials.
- the non-formation region 10 is a region where the grid G on which the polarizing films on the peripheral portions of the substrates 2 and 5 are formed is not formed.
- a chipping region that is a minute chip of the substrates 2 and 5 may exist in the cut portion.
- the protective films 4 and 8 are destroyed in a cutting region that occurs as a result of singulation and a chipping region adjacent to the cutting region.
- the polarizing plate 1 is formed on the wire grid 3 or the grid pattern 6 even when the protective films 4 and 8 are broken by forming the non-formed region 10 at the peripheral edge where the protective films 4 and 8 are broken.
- the arranged fine particles 7 are prevented from being exposed to the outside, and the polarizing film can be prevented from being deteriorated.
- the polarizing plate 1 provided with the non-formed region 10 at the peripheral portion does not show the discoloration of the polarizing film over the entire surface, and is prevented from being deteriorated.
- FIG. 5 in the polarizing plate in which the grid G is formed up to the peripheral portion and the non-forming region 10 is not provided, streaks A starting from the peripheral portion are observed, and the polarizing film is deteriorated. I understand that. In FIG. 5, streaks B starting from foreign matters remaining on the substrate were also observed.
- the non-formation region 10 has a width much larger than the pitch of the grid G from the peripheral edge of the substrates 2 and 5 to the inside, and is preferably 0.2 mm or more. This is because even when there is a lot of chipping, the possibility of deterioration of the polarizing film due to the destruction of the protective films 4 and 8 can be reduced. That is, the range in which chipping can occur is at most 0.1 mm from the cut surface toward the inside of the substrate, so that the non-formed region 10 is 0.2 mm from the peripheral edge of the substrates 2 and 5 toward the inside of the substrate. By providing the above, the polarizing film is not affected by chipping.
- the non-formation region 10 is formed in the range of 2 mm to 3 mm from the peripheral edge of the substrates 2 and 5 toward the inside. This is because the boundary of the effective area of the polarizing plate 1 on which the light beam is incident is often at a position of 2 mm to 3 mm from the edge of the substrate, so that the non-formed area 10 is 0.2 mm or more wide from the peripheral edge of the substrates 2 and 5.
- the polarizing film By providing in the range of 2 mm to 3 mm, it is possible to prevent the polarizing film from being deteriorated due to the destruction of the protective films 4 and 8 without reducing the effective area as the polarizing plate 1.
- the non-formation region 10 is effective even when the protective films 4 and 8 are formed on the substrates 2 and 5 that have been separated into pieces in advance. That is, in the polarizing plate 1, defects are likely to occur in the vicinity of the peripheral portions of the substrates 2 and 5 due to disorder of the grid structure of the protective films 4 and 8 and disorder of the substrate shape. In addition, the polarizing plate 1 has a high possibility of foreign matter adhering to the vicinity of the periphery when the substrates 2 and 5 are handled, and the degree of deterioration given to the polarizing film even with a slight defect depending on the type of foreign matter and the type of polarizing film is low. May be large.
- the polarizing plate 1 does not include a cutting step after the formation of the protective films 4 and 8 by providing the non-formation region 10 in which the grid G is not formed in the vicinity of the peripheral portions of the substrates 2 and 5, It has a great effect on improving reliability.
- the non-formation region 10 means a region where a fine lattice-like pattern (grid G) is not formed.
- a metal such as an Al film is interposed through the protective films 4 and 8.
- the case where the flat surfaces of the substrates 2 and 5 are exposed as they are or the case where the flat film covering the surfaces of the substrates 2 and 5 is exposed is also included.
- the non-formed region 10 is in a state where the metal film 15 remains as it is. Become.
- the metal film in the non-formation region 10 optically functions as a reflection film or a light-shielding film, and the non-formation region 10 serves as a light-shielding portion.
- the non-forming region 10 is a region that does not function at all in terms of polarization characteristics.
- the polarizing plate 1 it is preferable that the non-forming region 10 is small when it is desired to increase the effective region.
- a light-shielding film (a film that shields part of it, such as a reflection film or an absorption film) is formed on this portion.
- the metal film 15 formed in the non-forming region 10 is suitable for this purpose.
- the light shielding film can be removed by etching so as to have transparency.
- the protective films 4 and 8 are formed up to the non-formation region 10 at the peripheral edge of the substrates 2 and 5. If the protective film is formed except for the peripheral edge of the substrates 2 and 5 according to the region of the grid G where the fine particles 7 arranged on the wire grid 3 or the grid pattern 6 are formed, the protective film is formed. There is a possibility that the protective performance of the peripheral portion of the film region becomes insufficient due to the decrease in the film thickness. Therefore, the protective film is preferably formed larger than the formation region of the grid G, and is preferably formed on the entire surface of the substrate including the peripheral portion of the substrate.
- the protective films 4 and 8 are formed in the polarizing plate 1 to the non-formation area
- fine-particles 7 arranged on the wire grid 3 or the grid pattern 6 is provided.
- the defect of the protective films 4 and 8 at the peripheral portions of the substrates 2 and 5 does not overlap with the formation region of the fine particles 7 arranged on the wire grid 3 or the grid pattern 6, thereby affecting the protection performance. There is nothing.
- region 10 may be formed over the perimeter of the board
- the non-formation region 10 may be formed larger than the sides 2B and 5B parallel to the direction of the wire grid 3 and the arrangement direction of the fine particles 7.
- Deterioration of the polarizing film easily proceeds in the direction of the grid G along the wire grid 3 and the fine particles 7. Therefore, when the protective films 4 and 8 are broken at the cut end faces perpendicular to the direction of the wire grid 3 and the arrangement direction of the fine particles 7, the protection is performed at the cut end faces parallel to the direction of the wire grid 3 and the arrangement direction of the fine particles 7. Compared to the case where the films 4 and 8 are broken, there is a high possibility that the deterioration of the polarizing film spreads from the peripheral portions of the substrates 2 and 5 to the inside.
- the non-forming region 10 is formed only on the sides 2A and 5A orthogonal to the direction of the wire grid 3 and the arrangement direction of the fine particles 7, or the size of the orthogonal sides 2A and 5A is determined from the parallel sides 2B and 5B.
- the polarizing plate 1 has a large deterioration in the polarizing film while keeping the effective area large with respect to the sides parallel to the direction of the wire grid 3 and the arrangement direction of the fine particles 7. It is possible to prevent the progression to 1 effective region and to secure the performance of the protective film.
- a manufacturing method of the wire grid polarizer 1A will be described with reference to FIG.
- a plurality of wire grid polarizing plates 1A are formed on the wafer substrate 11 and then cut into pieces by cutting into a predetermined size.
- an antireflection film (ARC) 12 is formed on the back surface of the wafer substrate 11 (FIG. 9A)
- an Al thin film 13 is formed on the surface of the wafer substrate 11 by sputtering or the like (FIG. 9B).
- an antireflection film (BARC) and a chemical catalyst type photoresist are applied in this order by a spin coater.
- a resist grid pattern having a predetermined pitch, width, and height is formed.
- a rectangular light shielding aperture mask is provided on the surface of the wafer substrate 11, and a region that is not exposed at the time of two-beam interference exposure is formed on the peripheral edge of the substrate 2 formed on the wafer substrate 11 (FIG. 9C).
- a protective film 14 made of SiO 2 or the like is formed on the entire surface of the wafer substrate 11 by chemical vapor deposition (CVD) or the like (FIG. 9F).
- CVD chemical vapor deposition
- FIG. 9F the wire grid polarizing plate 1A formed on the wafer substrate 11 is cut into a predetermined size by a general-purpose glass scriber or the like and separated into individual pieces.
- the wire grid polarizing plate 1 ⁇ / b> A may be divided into pieces before forming the protective film 14, and finally the protective film 14 may be formed.
- a plurality of fine particle type polarizing plates 1B are also formed on a wafer substrate 16 made of a quartz substrate or the like, and then cut into a predetermined size.
- a wafer substrate 16 made of a quartz substrate or the like
- an Al thin film 18 is formed on the surface of the wafer substrate 16 by sputtering or the like (FIG. 10B).
- an antireflection film and a chemical catalyst type photoresist are applied in this order by a spin coater.
- a resist grid pattern having a predetermined pitch, width, and height is formed.
- a rectangular light-shielding aperture mask is provided on the surface of the wafer substrate 16, and regions that are not exposed at the time of two-beam interference exposure are formed in each peripheral portion of the substrate 5 formed on the wafer substrate 16 (FIG. 10C).
- the Al film partially functions as an etching mask, and as a result, the uneven grid pattern 6 having a predetermined pitch is formed on the quartz substrate. Further, it is not always necessary to provide an Al film on the grid pattern 6, and the Al film may be removed as appropriate. Fine particles 7 made of Ge or the like are formed on the substrate by sputtering (FIG. 10F). Thereby, the grid G and the non-formation area
- FIG. 10E the Al thin film is left in the non-formed region 10 to function as a light shielding portion. However, the light shielding portion can be omitted by removing the Al thin film in the non-formed region 10 in the Al etching process. .
- a protective film 19 made of SiO 2 or the like is formed on the entire surface of the wafer substrate 16 by chemical vapor deposition (CVD) or the like.
- CVD chemical vapor deposition
- the particulate polarizing plate 1B formed on the wafer substrate 16 is cut into a predetermined size and separated into individual pieces (FIG. 10G).
- the protective film 19 may be separated into pieces before forming the protective film 19, and finally the protective film 19 may be formed. Further, the above-described steps are performed on the substrate 5 that has been individually separated. May be formed.
- an Al thin film is deposited to a thickness of 230 nm by a DC sputtering apparatus on the surface of a 4-inch quartz substrate having an antireflection film (ARC) formed of a dielectric multilayer film on the back surface.
- ARC antireflection film
- BARC antireflection film
- a chemical catalyst type photoresist having a thickness of 230 nm are applied in this order by a spin coater.
- a resist grid pattern having a pitch of 150 nm, a width of 70 nm, and a height of 180 nm is formed.
- Comparative Example 1 a protective film made of SiO 2 formed by chemical vapor deposition (CVD) with a thickness of about 20 nm was used as Comparative Example 2, and after the protective film was formed under the same conditions in the state of a 4-inch substrate before cutting. What was cut
- a comparative example 2 and a comparative example 3 are provided except that a square light-shielding aperture mask is provided on the substrate surface during interference exposure to form a 24.5 mm ⁇ 24.5 mm outside area that is not exposed and a non-formation area 10 is provided. Examples produced under the same conditions were designated as Example 1 and Example 2, respectively.
- the completed five types of wire grid polarizing plates were each left in an environment of 60 ° C. and 90% humidity for 100 hours to observe changes in the polarizing film.
- an Al thin film is deposited by sputtering on the surface of a 25 mm square quartz substrate having an antireflection film (ARC) formed on the back surface by a dielectric multilayer film by sputtering.
- ARC antireflection film
- BARC antireflection film
- a chemical catalyst type photoresist are applied in this order to a thickness of 28 nm and 230 nm, respectively, with a spin coater.
- a resist grid pattern having a pitch of 150 nm, a width of 70 nm, and a height of 230 nm is formed.
- Comparative Example 4 of a fine particle type polarizing plate was obtained by forming Ge fine particles on this substrate by sputtering.
- Comparative Example 5 was obtained by forming a protective film made of SiO 2 with a thickness of about 20 nm by chemical vapor deposition (CVD).
- Example 3 As an extreme example that occurs during handling of these three types of fine particle type polarizing plates, ten sheets of artificially adhered sebum on the four surfaces around the substrate are each in an environment with a temperature of 60 ° C. and a humidity of 90%. For 100 hours, and the change in polarization characteristics was observed.
- Example 3 compared with Comparative Example 5, in Example 3 where the protective film was provided and the non-formed region 10 was provided in the vicinity of the side orthogonal to the grid pattern, no discoloration region or omission occurred around the substrate. .
- the polarizing film is not deteriorated and is excellent in the high humidity test. It has been verified that it has high reliability.
- the present invention is not limited to the wire grid polarizing plate 1A and the fine particle type polarizing plate 1B described here, but may be a device that depends on polarized light having a fine grid and a structure similar to the grid. But it can be applied.
- the fine grid is assumed to have a structure with an uneven cross section mainly having a pitch of about 1 ⁇ 2 or less of the wavelength used.
- the cross-sectional shape of the grid is appropriately determined within a range having a desired polarization characteristic, but when the “concave / convex depth / pitch” is 1/2 or more, it is suitable for producing a good polarization characteristic.
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Abstract
Description
本出願は、日本国において2010年5月31日に出願された日本特許出願番号特願2010-124178を基礎として優先権を主張するものであり、この出願を参照することにより、本出願に援用される。
<実験例1>
<実験例2>
Claims (19)
- 基板の周縁部にグリッドを形成しない非形成領域を有する偏光板。
- 上記非形成領域には、上記グリッドを保護する保護膜が形成されている請求項1記載の偏光板。
- 上記非形成領域には、遮光部が形成されている請求項1又は請求項2に記載の偏光板。
- 上記非形成領域は、上記基板の周縁部から内側に向かって0.2mm以上設けられている請求項1~3のいずれか1項に記載の偏光板。
- 上記非形成領域は、上記基板の周縁部から2~3mmの位置まで設けられている請求項4記載の偏光板。
- 上記基板は、略矩形状に形成され、
上記非形成領域は、上記基板の、上記グリッドの長手方向と略直交する辺の周縁部に設けられている請求項1~4のいずれか1項に記載の偏光板。 - さらに、上記非形成領域は、上記基板の、上記グリッドの長手方向と略平行な辺の周縁部に設けられている請求項6記載の偏光板。
- 上記グリッドの長手方向と略直交する辺の周縁部に設けられている上記非形成領域が、上記グリッドの長手方向と略平行な辺の周縁部に設けられている上記非形成領域よりも大きく形成されている請求項7記載の偏光板。
- 基板の一面全体に形成された下地膜に、グリッドを形成するパターン及び上記基板の周縁部に上記グリッドを形成しない非形成領域を形成するパターンを有するレジストを設け、上記下地膜を用いた上記グリッド及び上記非形成領域を形成する工程と、
上記グリッドを保護する保護膜を形成する工程とを備える偏光板の製造方法。 - ウェハ基板上に形成された複数の上記偏光板を切断する工程を備える請求項9記載の偏光板の製造方法。
- 上記切断工程は、上記保護膜を形成する工程の前に行う請求項10記載の偏光板の製造方法。
- 上記切断工程は、上記保護膜を形成する工程の後に行う請求項10記載の偏光板の製造方法。
- 上記非形成領域には、上記保護膜が形成されている請求項9~12のいずれか1項に記載の偏光板の製造方法。
- 上記非形成領域には、遮光部が形成されている請求項9~13のいずれか1項に記載の偏光板の製造方法。
- 上記非形成領域は、上記基板の周縁部から内側に向かって0.2mm以上設けられている請求項9~14のいずれか1項に記載の偏光板の製造方法。
- 上記非形成領域は、上記基板の周縁部から2~3mmの位置まで設けられている請求項15記載の偏光板の製造方法。
- 上記基板は、略矩形状に形成され、
上記非形成領域は、上記基板の、上記グリッドの長手方向と略直交する辺の周縁部に設けられている請求項9~16のいずれか1項に記載の偏光板の製造方法。 - さらに、上記非形成領域は、上記基板の、上記グリッドの長手方向と略平行な辺の周縁部に設けられている請求項17記載の偏光板の製造方法。
- 上記グリッドの長手方向と略直交する辺の周縁部に設けられている上記非形成領域が、上記グリッドの長手方向と略平行な辺の周縁部に設けられている上記非形成領域よりも大きく形成されている請求項18記載の偏光板の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/699,762 US9097857B2 (en) | 2010-05-31 | 2011-05-31 | Polarizing plate and method for producing polarizing plate |
CN201180027148.9A CN102939551B (zh) | 2010-05-31 | 2011-05-31 | 偏振光板及偏振光板的制造方法 |
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JP2010124178A JP2011248284A (ja) | 2010-05-31 | 2010-05-31 | 偏光板及び偏光板の製造方法 |
JP2010-124178 | 2010-05-31 |
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WO2011152422A1 true WO2011152422A1 (ja) | 2011-12-08 |
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JP6312454B2 (ja) * | 2014-02-07 | 2018-04-18 | 株式会社ブイ・テクノロジー | 偏光光照射装置 |
JP5789333B2 (ja) * | 2014-07-25 | 2015-10-07 | 日東電工株式会社 | 偏光板およびその製造方法 |
KR20160031612A (ko) * | 2014-09-12 | 2016-03-23 | 삼성디스플레이 주식회사 | 와이어 그리드 편광자, 이를 포함하는 표시 장치 및 이의 제조방법 |
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JP2019061125A (ja) * | 2017-09-27 | 2019-04-18 | デクセリアルズ株式会社 | 偏光板及びその製造方法、並びに光学機器 |
CN109581568B (zh) * | 2017-09-28 | 2022-05-24 | 迪睿合株式会社 | 偏振光板及具备该偏振光板的光学设备 |
JP6575583B2 (ja) | 2017-10-30 | 2019-09-18 | セイコーエプソン株式会社 | ワイヤーグリッド偏光装置および投射型表示装置 |
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JP7391495B2 (ja) * | 2018-02-14 | 2023-12-05 | デクセリアルズ株式会社 | 拡散板、拡散板の設計方法、表示装置、投影装置及び照明装置 |
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US9097857B2 (en) | 2015-08-04 |
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