WO2005098486A1 - 微細構造体の製造方法、該微細構造体を用いたスタンパの製造方法、及び該スタンパを用いた樹脂製の微細構造体の製造方法 - Google Patents
微細構造体の製造方法、該微細構造体を用いたスタンパの製造方法、及び該スタンパを用いた樹脂製の微細構造体の製造方法 Download PDFInfo
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- WO2005098486A1 WO2005098486A1 PCT/JP2005/006650 JP2005006650W WO2005098486A1 WO 2005098486 A1 WO2005098486 A1 WO 2005098486A1 JP 2005006650 W JP2005006650 W JP 2005006650W WO 2005098486 A1 WO2005098486 A1 WO 2005098486A1
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- Prior art keywords
- resist layer
- microstructure
- light
- resist
- manufacturing
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/201—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by an oblique exposure; characterised by the use of plural sources; characterised by the rotation of the optical device; characterised by a relative movement of the optical device, the light source, the sensitive system or the mask
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
- B29D11/00769—Producing diffraction gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1847—Manufacturing methods
- G02B5/1857—Manufacturing methods using exposure or etching means, e.g. holography, photolithography, exposure to electron or ion beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
Definitions
- the present invention relates to a method for producing a microstructure suitable for forming an optical sheet, and a stamper for obtaining a microstructure having the same shape or an inverted shape as the microstructure using the microstructure.
- An optical sheet obtained by finely processing the surface of a transparent resin such as metharyl resin, styrene resin, or polycarbonate resin is used for a surface light source device of a knock light type liquid crystal display or the like. Being! / Puru.
- An optical sheet having V-shaped grooves as fine processing is used to enhance the light-collecting property of light emitted from a light guide plate, and is called a prism sheet.
- an optical sheet having fine irregularities on its surface is used not only to make reflective dots inconspicuous by scattering light but also to collect light at the front and increase the front luminance, and is called a diffusion sheet. Have been.
- An optical sheet having such a V-shaped groove is generally manufactured by injection molding or transfer molding of a transparent resin using a mold (stamper).
- a method of manufacturing the stamper is as follows. Generally, a method of directly cutting a V-shaped groove into a metal mold with a diamond tool or the like is used.
- an optical sheet having fine irregularities on the surface is produced by a method of imparting irregularities with an emboss roller as described in Japanese Patent Application Laid-Open No. 2001-129881 (Reference Document 1).
- Japanese Patent Application Laid-Open No. 6-202341 proposes a method for forming a fine structure using a photosensitive resin.
- a positive photosensitive resin such as polymethyl methacrylate is applied to a conductive substrate 1 to form a resist layer 2.
- a mask 4 having slits 4a arranged at predetermined intervals is fixed to the resist layer 2 with a predetermined interval L1 therebetween, and the X-rays of synchrotron radiation are fixed.
- the first exposure is performed by inclining the conductive substrate 1 by + ⁇ with respect to the plane 6 perpendicular to the SR light (hereinafter, abbreviated as SR light).
- SR light SR light
- a second exposure is performed by inclining the conductive substrate 1 by an angle ⁇ with respect to a plane 6 perpendicular to the SR light.
- a plate-shaped exposed portion 2b having a thickness corresponding to the width of the slit is formed on the resist layer 2.
- the conductive substrate 1 having the obtained resist pattern 7 is immersed in a plating solution, and the entirety of the conductive substrate 1 is used as an electrode. (FIG. 11 (a)).
- a resist material is dissolved with a solvent to form a metal mold 9 having a resist pattern 7 and an inverted pattern.
- resin molding such as injection molding and transfer molding using the metal mold 9 as a mold (stamper)
- a microstructure 11 having a V-shaped groove as shown in FIG. 11C is molded. be able to.
- the surface of such an optical sheet is formed into a finer and uniform shape due to enlargement. And extrusion is difficult. For this reason, there is an increasing need to shape the surface using a precise transfer method such as injection molding, hot pressing, or a casting method.
- optical sheets have been enhanced in function.
- optical sheets having many functions are used in a single device such as a prism sheet and a light diffusing sheet
- optical sheets having mutual functions have been proposed.
- a prism sheet that can be used with one prism sheet for two prism sheets having different directions of the prism has been proposed.
- Attempts have also been made to incorporate the function of a prism sheet into a light diffusion sheet.
- the method for producing a resin plate as described in the above-mentioned References 1 to 3 is not suitable for producing such an optical sheet.
- the method for forming a microstructure described in Reference 4 is considered to be capable of manufacturing a mold having fine V-shaped grooves.
- the resist layer 2c shown in FIG. In order to be cut out, the mask pitch and the incident angle are limited, and at least the exposed portion 2a and the exposed portion 2b need to intersect or be in contact as shown in FIG. 10 (c).
- the method for forming a microstructure described in Reference 4 is a technique achieved by a combination of synchrotron radiation X-rays (SR light) and a positive resist.
- X-rays of synchrotron radiation have the problem that the equipment is very powerful.
- Another problem is that the photosensitive resin used is mainly limited to a positive resist.
- a method for manufacturing a microstructure having a groove on a surface includes the steps of: outputting a parallel light beam from a light source through a photomask having a plurality of slits arranged at predetermined intervals.
- the resist layer is substantially Forming a trapezoidal light-irradiated portion, and removing the non-light-irradiated portion of the resist layer by developing the resist layer.
- FIG. 1 is a schematic view showing a manufacturing process of a master according to the present invention.
- FIG. 2 is a schematic view showing a production process of a master according to the present invention.
- FIG. 3 is a schematic diagram showing an example of a master obtained by the present invention in cross section.
- FIG. 4 is a schematic view showing a production process of a master according to the present invention.
- FIG. 5 is a schematic view showing a production process of a master according to the present invention.
- FIG. 6 is a schematic view showing an example of a master obtained by the present invention.
- FIG. 7 is a schematic diagram showing an example of a master obtained by the present invention in cross section.
- FIG. 8 is a diagram showing a photographing result of photographing the surface of a master produced by the present invention with an electron microscope.
- FIG. 9 is a view showing a measurement result of an arithmetic surface roughness of a stamper manufactured according to the present invention.
- FIG. 10 is a schematic diagram showing a manufacturing process of a master according to a conventional example.
- FIG. 11 is a schematic view showing a manufacturing process of a microstructure according to a conventional example.
- FIG. 12 is a schematic diagram for explaining a problem in a manufacturing process of a master according to a conventional example.
- FIG. 13 is a schematic diagram for explaining a problem in a manufacturing process of a master according to a conventional example.
- FIG. 14 is a flowchart illustrating a method for manufacturing a microstructure of the present invention and a method for manufacturing a stamper using the microstructure.
- One object of the present invention is to provide a method for manufacturing a microstructure suitable for manufacturing an optical sheet such as a prism sheet.
- Another object of the present invention is to provide a method for manufacturing a microstructure suitable for manufacturing an optical sheet having a function of a diffusion sheet in addition to a function of an optical sheet such as a prism sheet. is there.
- a method of manufacturing a microstructure having a groove on a surface includes a photomask having a plurality of slits arranged at predetermined intervals. Irradiates parallel light rays from the light source to the resist layer formed on the substrate by changing the angle continuously or stepwise from one direction to the other direction with respect to the vertical plane along the longitudinal direction of the slit. Forming a substantially trapezoidal light-irradiated portion on the resist layer (Step 100), and removing the non-light-irradiated portion of the resist layer by developing the resist layer (Step 100). 101)).
- the resist a positive type can be used, but by using a negative type resist, a microstructure having a V-shaped groove can be easily manufactured.
- the predetermined intervals of the slits do not need to be the same for all of the adjacent slits.
- the predetermined interval can be appropriately changed according to the use of an optical sheet to be manufactured later.
- the fine particles are dispersed in the negative resist layer, the fine particles are exposed to the inclined surface in the step of removing the non-light-irradiated portion by developing, and the fine particles are dispersed. Are left or removed, thereby forming fine concaves or convexes on the inclined surface.
- a force for exposing the positive resist on the inclined surface in the step of removing the non-light-irradiated portion by developing is also used in this step. It is possible to manufacture a fine structure which is dissolved and removed and has a fine concave portion on the inclined surface.
- the step of forming the light irradiating part may be performed by adjusting an incident angle of the parallel light beam, dimensions of each part of the photomask, and Z or a thickness of the resist layer, so that the adjacent substantially trapezoidal light irradiating part is formed. Microstructures, if contacting or overlapping the bottom of the And a V-shaped groove facing the substrate surface.
- the step of forming the light irradiating portion adjusts the incident angle of the parallel light beam, the dimensions of each part of the photomask, and the Z or the thickness of the resist layer, thereby forming the adjacent substantially trapezoidal light irradiating portions.
- the microstructure may include a groove having a substantially trapezoidal cross section whose width gradually decreases toward the substrate surface.
- the microstructure manufactured as described above, or as a stamper by the following method is used for manufacturing a microstructure such as an optical sheet having a V-shaped groove by resin molding.
- a microstructure such as an optical sheet having a V-shaped groove by resin molding.
- Can be that is, as shown in FIG. 14, using the manufactured microstructure, a metal mold having a pattern in which the surface of the microstructure is inverted or has the same shape is formed (step 110). ) And manufacturing a stamper having a groove having the same shape or an inverted shape as the surface of the microstructure using the metal mold (step 111). It is possible.
- a conductive film is formed on the surface of the microstructure (Step 120), an electrode metal is applied to the conductive film to form an electrode layer (Step 121), and It is also possible to manufacture a molding stamper by a method including manufacturing a molding stamper by removing the microstructure from the conductive film (step 122).
- a method for manufacturing a fine structure suitable for manufacturing an optical sheet such as a prism sheet by a simple method using a resist.
- One feature of this manufacturing method is that it can be applied to a method for manufacturing a microstructure suitable for manufacturing an optical sheet having a function of a diffusion sheet in addition to the function of an optical sheet such as a prism sheet. What you can do.
- FIGS. 1 and 2 show an optical sheet having a V-shaped groove according to an embodiment of the present invention.
- FIG. 3 is a schematic view showing a manufacturing process of a master for performing the process, and
- FIG. 3 is a diagram illustrating a shape of a microstructure (master) obtained by the process.
- a resist layer 12 is formed on an appropriate substrate 11, and a photomask 13 is brought into close contact with or close to the upper surface of the resist layer 12.
- the photomask 13 is in the form of a thin plate, and includes a light shielding portion 13a that reflects or absorbs light and shields light, and a plurality of slits (openings) having a width W13b provided between the light shielding portions 13a. With 13b.
- the plurality of slits 13b are respectively arranged substantially in parallel.
- a parallel light beam such as an ultraviolet light (UV light) is irradiated from the photomask 13 side.
- the parallel rays are directed from one direction (the angle 01 in FIG. 2) to the other direction (the angle 02 in FIG. 2) with respect to the vertical plane along the longitudinal direction of the slit.
- the irradiation angle is changed continuously or stepwise.
- a portion indicated by reference numeral 12a is exposed by a parallel light beam irradiated from the slit 13b to form an exposed portion 12a, and a portion indicated by reference numeral 12b is not exposed and is not exposed to light.
- Form 12b the cross-sectional shape of the exposed portion 12a becomes a trapezoidal shape that gradually decreases toward the incident light side with the surface in contact with the slit 13b as the upper bottom, and a light non-exposed portion is provided between the adjacent exposed portions 12a and 12a.
- 12b is formed in an inverted triangular shape.
- this resist is a negative resist
- the photomask is peeled off after exposure and developed, so that the light non-exposed portion 12b is removed, and as shown in FIG.
- the master 14 as a fine structure in which only the residue remains can be obtained.
- the master 14 has an upper base 15 having the same width W 15 as the width W 13 b of the slit 13, an inclined surface 16 a having the same angle as the inclination angle ⁇ 1, and an inclined surface having the same angle as the inclination angle of ⁇ 2. It has a substantially trapezoidal shape having a surface 16b. Further, in this embodiment, the bottoms of the substantially trapezoidal light exposure portions 12a (in FIGS. 2 and 3, one bottom of one light exposure portion 12a is denoted by reference numeral 12c) overlap each other.
- a V-shaped groove 18 having an apex angle ⁇ 17 restricted by ⁇ 1 and ⁇ ⁇ ⁇ 2 is formed by the opposed inclined surfaces 16a and 16b. ing.
- FIGS. 4 to 6 are schematic views showing a manufacturing process of a master for manufacturing an optical sheet having a V-shaped groove of an embodiment according to a modification of FIGS. 1 to 3, and a master of the master manufactured thereby. It is a schematic diagram explaining an example with a cross section. Parts that are the same as or equivalent to those in FIGS. 1 to 3 are given the same numbers, and detailed descriptions thereof are omitted.
- the thickness tl 2 of the resist layer 12 was reduced.
- the thickness tl 2 of the resist layer 12 is adjusted to be thin, so that the exposed portions 12 adjacent to each other are adjusted.
- the bottoms 12c of a and 12a were separated from each other. That is, a gap 11a indicated by the width Wla is formed between the adjacent exposed portions 12a.
- a master 14 in which the exposed portions 12a are separated from each other and the substrate surface 17 is exposed can be obtained.
- the master 14 has an upper base 15 having the same width W 15 as the width W 13 b of the slit 13, an inclined surface 16 a having the same angle as the inclination angle of ⁇ 1, and an inclined surface 16 b having the same angle as the inclination angle of ⁇ 2. It has a substantially trapezoidal shape.
- This groove is a part of the substrate 11 having a width W17 equal to the width Wlla.
- a substantially trapezoidal groove 19 having an upper bottom 17 formed by exposing the portion is obtained.
- Such a substantially trapezoidal groove 19 can be obtained by appropriately changing the irradiation angles 01, 02 of the light beam, the width W13a of the shielding portion 13a, and the thickness tl2 of the resist layer 12.
- a photoresist is supported, and can be used in a subsequent master production process, or any material can be used if there is no problem.
- a planar material such as a glass substrate or a metal plate can be exemplified.
- the substrate 11 having fine irregularities surface roughness
- the upper base 17 formed by exposing a part of the substrate 11 is exposed. Since there is a substantially trapezoidal groove 19 having a shape, a molded product formed by using the master 14 or a mold (stamper) manufactured by using the master 14, has fine irregularities (surface It becomes a compact or stamper that reproduces (roughness).
- a resist material for forming the resist layer 12 will be described.
- a resist material any resist material such as a positive resist or a negative resist can be used, a fine structure having a V-shaped groove as described above can be easily manufactured by using a negative resist.
- the present invention can be applied only when the thickness of the resist layer 12 is reduced, and the obtained shape is undercut.
- Such application of the resist layer 12 can be performed by an appropriate method such as spin coating, spray coating, or dip coating. Since the viscosity of the resist is appropriately high, for example, 50 to 400 cps, the thickness of the resist layer 12 can be kept uniform within a range of 1 m to 100 m. Generally, if the thickness is not less than lOOcps, the resist layer 12 having a thickness of about 5 ⁇ m or more can be uniformly held. Such a thick film is preferably obtained by spin coating. For example, in order to apply it by spray coating or the like, a multi-coating method may be used.
- the thickness of the resist layer 12 is determined as desired, and the pattern of the V-shaped groove can be changed by reducing the thickness of the resist layer 12 as described above.
- fine particles 20 may be dispersed in this resist material.
- the fine particles 20 are exposed on the inclined surface of the exposed portion (light-irradiated portion) 12a to form a fine convex portion 20a.
- fine concave portions 21 corresponding to the diameter of the fine particles 20 are formed on the inclined surface 16a (or 16b) where the fine particles 20 are exposed. Is done.
- the unevenness may be controlled by appropriately controlling the particle diameter of the fine particles, the concentration of the fine particles, the uniformity of the fine particles, and the like.
- the fine particles In order to enhance the light diffusion performance, it is preferable that the fine particles have a spherical shape or a shape closer to a spherical shape.
- the concentration of the fine particles can be adjusted by the ratio (mixing ratio) of the components to be fine particles.
- the arithmetic mean roughness of the inclined surface can be about 0.1 to: LO / zm.
- the shape of the concavities and convexities formed in this way is generally about half or less of the diameter of the fine particles 20.
- the particle diameter of the fine particles 20 is 1 ⁇ m to 50 ⁇ m, preferably 1 ⁇ m
- the average roughness is preferably set within a range of about 0.1 to 10 m. It can be set to Thereby, the diffusion performance of the inclined surfaces 16a and 16b can be increased.
- fine particles of the dispersion are uniformly dispersed in the dispersion.
- the particles can be dispersed by stirring using a homogenizer, a mixer, or the like.
- the particles are not necessarily limited to these, and can be appropriately selected.
- One simple method of removing the fine particles 20 is to disperse fine particles of a positive resist with a negative resist as a sea component. Since the positive resist as fine particles is decomposed by exposure to light, the positive resist exposed on the inclined surface is removed in the developing step, thereby forming a fine structure having fine concave portions 21 on the inclined surface. Can be manufactured
- a positive photoresist and a negative photoresist that are incompatible with each other are selected, and an emulsion such as discharging a small amount of a component using a predetermined small-diameter nozzle vigorously is used. It can be formed according to the usual method of molding.
- the obtained dispersion liquid is subjected to a defoaming step such as defoaming to disperse the fine particle diameter as uniformly as possible.
- the photomask 13 is not particularly limited as long as it has a slit 13b of a desired shape, but generally, the photomask 13 preferably has a smaller thickness. If the thickness is large, reflection of light on the side surface of the slit 13b may be a problem.
- the side surface of the slit 13b is preferably made of at least a light-absorbing material. Further, it is preferable that the side in contact with the resist layer 12 has an appropriate release property or is provided with an appropriate release agent. This facilitates separation from the resist layer 12 after exposure.
- the plurality of slits 13b are preferably substantially parallel depending on the use.
- the plurality of slits 13b are substantially parallel, the plurality of non-light-irradiated portions formed when the parallel light beam is irradiated have substantially the same cross-sectional shape. For this reason, a more uniform groove is formed on the surface of the fine structure after development. You can do it.
- a light source a light source corresponding to a resist material to be used may be used.
- a photoresist a normal ultraviolet light source can be used as it is. Adjustment of the incident angle is achieved by moving the light source (including changing the irradiation angle) or by changing the angle of the substrate 11.
- one of the features is that a parallel light beam is irradiated to the resist layer through the slit 13b while changing the angle continuously or stepwise.
- the parallel light beam is UV. Use light. As a result, it is possible to obtain a desired shape while suppressing the amount of deformation without being affected by heat or temperature. Also, compared to SR light, the master can be manufactured with a simpler device, and costs can be reduced.
- microstructure obtained as described above can be used as a master as it is or after appropriate post-processing.
- post-processing is moderate heat treatment.
- Appropriate heat treatment can make the shape of the sharp tip smooth.
- the trapezoidal repetitive pattern may be formed into a continuous dome-shaped repetitive pattern by reducing the corners of the trapezoidal shape.
- the photomask is removed, and a relief pattern of a specific shape can be formed by laser writing or grayscale mask exposure, and light having a complicated and complicated pattern due to three-dimensional relief patterns. Diffusion sheets can also be obtained.
- the master thus obtained can be used as a mold (stamper) by a conventional method.
- a conductive film is formed on the surface of the master, an electrode metal is applied to the conductive film to form an electrode layer, and the microstructure is peeled from the conductive film and dissolved.
- Molding stampers can be manufactured by removing them by a technique.
- the electroplating can be performed by immersing the conductive substrate in a plating solution and using the entire conductive substrate as an electrode.
- the conductive film for example, any of nickel, gold, silver, and copper, or an alloy of two or more of gold, silver, copper, and nickel can be used.
- the electrode for example, any of copper, zinc, and nickel, or an alloy of two or more of copper, zinc, and nickel can be used. Further, by transferring fine irregularities to resin using the molding stamper (die), a desired optical sheet can be manufactured at low cost.
- PMER N-H600 negative photoresist manufactured by Tokyo Ohka Co., Ltd. by spin coating so that the thickness of the photosensitive resin becomes about 30 m.
- the plate was warmed for 2 minutes and cooled to room temperature after pre-beta.
- irradiation was performed by sweeping UV light of 620 mj of irradiation light for 64 seconds using a UV irradiation apparatus that can rotate in the range of ⁇ 1: +45 degrees and ⁇ 2: ⁇ 45 degrees.
- a nickel conductive film is formed on the surface of the obtained master according to a conventional method, and nickel as a power metal is applied to the nickel conductive film to form a nickel electrode layer. did. Further, the master was peeled off from the nickel conductive film to obtain a molding stamper.
- the transparent resin sheet molded using this molding stamper is 8 mm thick, has a flat portion of about 6 ⁇ m at the top, a vertical angle of about 90 degrees, and a pitch of 70 to 90 ⁇ m. Prism pattern.
- Example 1 35 g of silicone resin fine particles (Tospearl (GE Toshiba Silicone Co., Ltd.)) having a particle size of 2 ⁇ m were mixed with 200 ml of the photoresist of Example 1. The mixture was stirred for 10 minutes using a mixer-type stirrer, and after the mixing, the mixture was defoamed under pressure to obtain a dispersion liquid in which silicone resin fine particles were uniformly dispersed. A master was obtained in the same manner as in Example 1 except that this dispersion was used, and a stannoid was produced in the same manner as in Example 1.
- silicone resin fine particles Tospearl (GE Toshiba Silicone Co., Ltd.) having a particle size of 2 ⁇ m were mixed with 200 ml of the photoresist of Example 1. The mixture was stirred for 10 minutes using a mixer-type stirrer, and after the mixing, the mixture was defoamed under pressure to obtain a dispersion liquid in which silicone resin fine particles were uniformly dispersed.
- a master was obtained
- a reflection image of the surface of the master was measured using 00 (Keyence Corporation).
- Figure 8 shows the enlarged image.
- the arithmetic surface roughness (Ra) of the surface of the obtained stamper was measured using a surface roughness measuring device (Surfcom200B (Tokyo Seimitsu Co., Ltd.)) under the conditions of IMPa, and the measurement results were shown in FIG. It was shown to.
- the arithmetic surface roughness of the slope of the master was approximately 0.23 to 0.25 ⁇ m, indicating that fine and uniform irregularities were formed.
- the unevenness can impart diffusivity to the slope.
- a master having a V-shaped groove having a mirror surface can be easily manufactured.
- the surface of the master can also be roughened by dispersing fine particles or using a roughened substrate.
- the shape of the V-shaped groove can be freely controlled.
- the method for producing a microstructure of the present invention can be applied not only to an optical sheet having a V-shaped groove (for example, a prism sheet) but also to an optical sheet having other functions such as diffusivity. Or, it is expected to be applied to manufacture of various parts such as semiconductors and optical devices.
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JP2006519471A JP4802093B2 (ja) | 2004-04-09 | 2005-04-05 | 微細構造体の製造方法、該微細構造体を用いたスタンパの製造方法、及び該スタンパを用いた樹脂製の微細構造体の製造方法 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008070456A (ja) * | 2006-09-12 | 2008-03-27 | Sony Corp | レンズフィルムおよび表示装置 |
EP1990662A1 (en) * | 2007-05-08 | 2008-11-12 | Samsung Electronics Co., Ltd. | Optical sheet, method of manufacturing the same and display apparatus having the same |
JP2009151257A (ja) * | 2007-12-24 | 2009-07-09 | Ind Technol Res Inst | 傾斜露光リソグラフシステム |
WO2015011253A1 (de) * | 2013-07-25 | 2015-01-29 | Acquandas GmbH | Verfahren zur herstellung einer medizinischen vorrichtung oder einer vorrichtung mit strukturelementen, verfahren zum modifizieren der oberfläche einer medizinischen vorrichtung oder einer vorrichtung mit strukturelementen, medizinische vorrichtung und schichtverbund mit einem substrat |
JP2015021983A (ja) * | 2013-07-16 | 2015-02-02 | 凸版印刷株式会社 | カラーフィルタの製造方法及びカラーフィルタ |
JP2015079274A (ja) * | 2014-12-22 | 2015-04-23 | 王子ホールディングス株式会社 | 凹凸パターンシートの製造方法、及び光学シートの製造方法 |
US11131930B2 (en) * | 2017-03-21 | 2021-09-28 | Boe Technology Group Co., Ltd. | Female mold and method for manufacturing the same |
Families Citing this family (1)
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CN112584623A (zh) * | 2019-09-27 | 2021-03-30 | 恒煦电子材料股份有限公司 | 电镀金属导线的制作方法 |
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- 2005-04-05 WO PCT/JP2005/006650 patent/WO2005098486A1/ja active Application Filing
- 2005-04-08 TW TW094111097A patent/TW200602816A/zh unknown
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JPH05257270A (ja) * | 1992-03-12 | 1993-10-08 | Toppan Printing Co Ltd | 印刷版の製造方法 |
JPH06300905A (ja) * | 1993-04-14 | 1994-10-28 | Nikon Corp | 光散乱面を有する光学部品及びその製造方法 |
JP2000105370A (ja) * | 1998-09-29 | 2000-04-11 | Matsushita Electric Ind Co Ltd | 反射板、並びに反射型表示素子及びその製造方法 |
JP2001235873A (ja) * | 2000-02-24 | 2001-08-31 | Mitsubishi Electric Corp | テーパ形状の形成方法 |
JP2002146584A (ja) * | 2000-04-14 | 2002-05-22 | Citizen Watch Co Ltd | 微小形状構造体、ノズル部品、光学部品、表示装置、電鋳元型及びそれらの製造方法 |
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Cited By (9)
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JP2008070456A (ja) * | 2006-09-12 | 2008-03-27 | Sony Corp | レンズフィルムおよび表示装置 |
EP1990662A1 (en) * | 2007-05-08 | 2008-11-12 | Samsung Electronics Co., Ltd. | Optical sheet, method of manufacturing the same and display apparatus having the same |
US7967489B2 (en) | 2007-05-08 | 2011-06-28 | Samsung Electronics Co., Ltd. | Optical sheet, method of manufacturing the same and display apparatus having the same |
JP2009151257A (ja) * | 2007-12-24 | 2009-07-09 | Ind Technol Res Inst | 傾斜露光リソグラフシステム |
JP2015021983A (ja) * | 2013-07-16 | 2015-02-02 | 凸版印刷株式会社 | カラーフィルタの製造方法及びカラーフィルタ |
WO2015011253A1 (de) * | 2013-07-25 | 2015-01-29 | Acquandas GmbH | Verfahren zur herstellung einer medizinischen vorrichtung oder einer vorrichtung mit strukturelementen, verfahren zum modifizieren der oberfläche einer medizinischen vorrichtung oder einer vorrichtung mit strukturelementen, medizinische vorrichtung und schichtverbund mit einem substrat |
US10061198B2 (en) | 2013-07-25 | 2018-08-28 | Acquandas GmbH | Method for producing a medical device or a device with structure elements, method for modifying the surface of a medical device or of a device with structure elements, medical device and laminated composite with a substrate |
JP2015079274A (ja) * | 2014-12-22 | 2015-04-23 | 王子ホールディングス株式会社 | 凹凸パターンシートの製造方法、及び光学シートの製造方法 |
US11131930B2 (en) * | 2017-03-21 | 2021-09-28 | Boe Technology Group Co., Ltd. | Female mold and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
JP4802093B2 (ja) | 2011-10-26 |
TW200602816A (en) | 2006-01-16 |
JPWO2005098486A1 (ja) | 2008-02-28 |
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