JP2015106015A - Polarized light irradiation device, polarized light irradiation method and polarized light irradiation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polarized light irradiation device which evenly irradiates light from a light source, while providing a photo-alignment function to a photo-alignment film in a predetermined photo-alignment direction.SOLUTION: A polarized light irradiation device is for applying alignment processing to a photo-alignment film by irradiating light in a specific wavelength range while moving the photo-alignment film. The polarized light irradiation device comprises: a light irradiation unit that includes a first light source string having a plurality of light sources, and a second light source string coupled to the first light source string and having a plurality of light sources; a rotation unit that relatively rotates the light irradiation unit by a predetermined angle from a reference position with respect to the photo-alignment film on a plane parallel to a surface of the photo-alignment film; an adjustment unit that adjusts a position of the second light source string with respect to the first light source string in such a manner that light from the light sources of the first light source string and light from the light sources of the second light source string are to be evenly irradiated on the photo-alignment film.

Description

  The present invention relates to a polarized light irradiation apparatus, a polarized light irradiation method, and a polarized light irradiation program, and more particularly to a polarized light irradiation apparatus, a polarized light irradiation method, and a polarized light irradiation program for performing alignment treatment on a photo-alignment film. .

  A polymer film called a photo-alignment film is applied to a substrate for liquid crystal display used in a liquid crystal display or the like. The photo-alignment film is a film for aligning liquid crystal molecules in a certain direction. Since the liquid crystal molecules are regularly arranged, contrast is generated and an image can be displayed. Therefore, it is necessary to irradiate polarized light in the ultraviolet region in order to give the photo-alignment film a photo-alignment function in a predetermined photo-alignment direction.

  For example, Patent Document 1 includes a light irradiation unit that emits light emitted from a linear light source by being polarized by a wire grid polarization element, and generates an oblique orientation with respect to the transport direction of the photo-alignment film. A technique is disclosed in which a light irradiation unit that emits polarized light is rotated for each wire grid polarization element in accordance with a desired orientation direction.

  On the other hand, a manufacturing method of irradiating polarized light using a plurality of polarizing plates and / or light sources is used for manufacturing a large-sized photo-alignment film with an increase in size of a liquid crystal display. However, since it is difficult to dispose the polarizing plate and the light source without any gaps, uneven irradiation of polarized light occurs. For such problems, Patent Documents 2 and 3 propose techniques relating to a method for manufacturing a photo-alignment film.

  Patent Document 2 discloses a technique in which light irradiation units are arranged in multiple stages along the transport direction of the photo-alignment film. In Patent Document 2, each boundary between the polarizing elements of the light irradiating units of each stage is not overlapped with the boundary of the polarizing elements of the light irradiating units of the other stages and the transport direction of the photo-alignment film. There is disclosed a polarized light irradiating device for photo-alignment in which each light irradiating unit arranged in a stage is arranged with a position shifted in a direction orthogonal to the transport direction of the photo-alignment film.

  Patent Document 3 discloses a technique including a plurality of polarizers arranged adjacent to each other in an adjacent direction, and an adjacent surface of the polarizer and an adjacent direction of the polarizer are inclined with respect to the scanning direction. Yes.

  However, in the technique described in Patent Document 2, when changing the alignment direction generated in the photo-alignment film, it is necessary to incline the light irradiation unit with respect to the transport direction of the photo-alignment film. In the technique described in Patent Document 2, when the light irradiation unit is inclined, the intervals between adjacent light sources of a plurality of light sources are not uniform when projected onto a plane that passes through the reference position and is orthogonal to the surface of the photo-alignment film. , The light from each light source is not uniformly irradiated to the photo-alignment film, and uneven irradiation occurs.

  Moreover, in the technique of patent document 3, by rotating the several polarizer arrange | positioned adjacently, two functions of suppression of the irradiation nonuniformity of a photo-alignment film and the change of the alignment direction produced in a photo-alignment film are performed. Realized. Therefore, in the technique described in Patent Document 3, the effect of each function may be insufficient when the optimum rotation angle is different for each of suppression of irradiation unevenness and change of the alignment direction generated in the photo-alignment film. .

JP 2006-133498 A JP 2007-114647 A Japanese Patent No. 5131886

  In view of the above circumstances, an object of the present invention is to uniformly irradiate light from a light source while imparting a photo-alignment function to a photo-alignment film in a predetermined photo-alignment direction.

  The polarized light irradiation apparatus of the present invention is a polarized light irradiation apparatus for performing alignment treatment on a photo-alignment film by irradiating light in a specific wavelength region while moving the photo-alignment film, and has a plurality of light sources. A light irradiation unit including a first light source column and a second light source column connected to the first light source column and having a plurality of light sources, and the light irradiation unit parallel to the surface of the photo-alignment film A rotating unit that rotates relative to the photo-alignment film at a predetermined angle relative to the photo-alignment film, light from the light source of the first light source array, and light from the light source of the second light source array And an adjusting unit that adjusts the position of the second light source array with respect to the first light source array so that the light alignment film is uniformly irradiated.

  The adjustment unit is adjacent to the plurality of light sources when the plurality of light sources of the first light source array and the plurality of light sources of the second light source array are projected on a plane that passes through the reference position and is orthogonal to the surface of the photo-alignment film. The position of the second light source row can be adjusted so that the intervals between the light sources are equal.

  The first light source array and the second light source array further include a filter that transmits light of a specific wavelength out of light from the light source, and a polarizing material that polarizes light that has passed through the filter. The irradiation unit can irradiate the photo-alignment film with the light polarized by the polarizing material.

  The first light source row and the second light source row can be slidably connected to each other.

  The rotating unit rotates the light irradiating unit with the vertical direction of the surface of the photo-alignment film as a rotation axis, and the adjusting unit moves the second light source column with the longitudinal direction of the second light source column as a moving axis. The position of the second light source array with respect to the first light source array can be adjusted.

  The rotating unit rotates the light irradiation unit by moving the longitudinal direction and the short direction of the first light source row as movement axes, and the adjusting unit rotates the second light source row to the longitudinal direction of the second light source row. It is possible to adjust the position of the second light source array with respect to the first light source array by moving the direction as the movement axis.

  The rotating unit rotates the first light source array about the vertical direction of the surface of the photo-alignment film as a rotation axis, and the adjusting unit carries the second light source array at both ends in the longitudinal direction. The position of the second light source row with respect to the first light source row can be adjusted by being moved by the support member.

  The carrying member can be an eccentric member, a cam member or a spring member.

  The polarized light irradiation method of the present invention is a polarized light irradiation method for performing alignment treatment on a photo-alignment film by irradiating light in a specific wavelength region while moving the photo-alignment film, and has a plurality of light sources. A light irradiation step including a first light source array and a second light source array provided in connection with the first light source array and having a plurality of light sources; a first light source array and a second light source array; A rotation step for rotating at a predetermined angle from a reference position relative to the photo-alignment film on a plane parallel to the surface of the photo-alignment film, and the light from the light source of the first light source array and the second light source And an adjustment step of adjusting the position of the second light source row with respect to the first light source row so that the light from the light sources in the row is uniformly irradiated to the photo-alignment film.

  The polarized light irradiation program of the present invention is a polarized light irradiation program for performing an alignment process on a photo-alignment film by irradiating light in a specific wavelength region while moving the photo-alignment film, A rotation function for rotating the first light source array and the second light source array having a light source at a predetermined angle relative to the photo-alignment film relative to the photo-alignment film on a plane parallel to the surface of the photo-alignment film; Position of the second light source row relative to the first light source row so that the light from the light source of the first light source row and the light from the light source of the second light source row are uniformly irradiated to the photo-alignment film It is characterized by realizing an adjustment function for adjusting the.

  According to the polarized light irradiation apparatus of the present invention, it is possible to uniformly irradiate light from a light source while imparting a photo-alignment function to a photo-alignment film in a predetermined photo-alignment direction.

The schematic diagram for demonstrating the polarized light irradiation apparatus which concerns on the 1st Embodiment of this invention is shown. The schematic diagram of the 1st light source row | line | column and the 2nd light source row | line | column in the polarized light irradiation apparatus which concerns on the 1st Embodiment of this invention is shown. The figure for demonstrating adjustment of the adjustment part in the polarized light irradiation apparatus which concerns on the 1st Embodiment of this invention is shown. The figure for demonstrating adjustment of the adjustment part in the polarized light irradiation apparatus which concerns on the 1st Embodiment of this invention is shown. The schematic diagram of the light irradiation part in the polarized light irradiation apparatus which concerns on the 1st Embodiment of this invention is shown. The figure for demonstrating adjustment of the adjustment part of the polarized light irradiation apparatus which concerns on the 2nd Embodiment of this invention is shown. The schematic diagram of the 1st light source row | line | column and 2nd light source row | line | column of the polarized light irradiation apparatus which concerns on the 3rd Embodiment of this invention is shown. The figure for demonstrating adjustment of the adjustment part in the polarized light irradiation apparatus which concerns on the 3rd Embodiment of this invention is shown. The graph for demonstrating the illumination intensity distribution of the polarized light irradiation apparatus in conventional embodiment is shown. The graph for demonstrating the illumination intensity distribution of the polarized light irradiation apparatus in embodiment of this invention is shown.

[First Embodiment]
A first embodiment of a polarized light irradiation apparatus according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1 (a), the polarized light irradiation apparatus of the present invention is polarized light for performing alignment treatment on the photo-alignment film 40 by irradiating light in a specific wavelength region while moving the photo-alignment film 40. It is a light irradiation device, and includes a light irradiation unit 10, a rotation unit 20, and an adjustment unit 30.

  The photo-alignment film 40 is a film for aligning liquid crystal molecule groups in a certain direction, and may be a polyimide film, for example. The photo-alignment film 40 may be applied to a liquid crystal substrate, for example. As shown in FIG.1 (c), a board | substrate can be moved to the irradiation range of the light irradiation part 10 by contact-type stages, such as a conveyor, a roller, a pin, a table, and a non-contact type levitation conveyance stage, for example.

  As shown in FIG. 2, the light irradiation unit 10 is connected to a first light source row 16 having a plurality of light sources 11 a and a first light source row 16 and has a second light source 11 b. The light source row 17 is provided. In the figure, the lower stage of the drawing is the first light source row 16, but the upper stage can be the first light source row 16.

  The light sources 11a and 11b irradiate the photo-alignment film 40 with light rays, and can be, for example, rod-shaped lamps. Specifically, the rod-shaped lamp can be a high-pressure mercury lamp, a metal halide lamp, or the like. Further, the light sources 11a and 11b may be light emitting diodes or light sources that are linearly arranged by arranging light emitting diodes in a straight line.

  As shown in FIG. 1B, the rotating unit 20 is configured to place the light irradiation unit 10 from the reference position S relative to the photo-alignment film 40 on a plane parallel to the surface of the photo-alignment film 40. In the rotation direction B at an angle of The rotating unit 20 can automatically rotate the angle from the reference position S manually or by driving with a motor or the like. The predetermined angle can be an angle for realizing a polarization characteristic corresponding to a product. The predetermined angle may be 7 ° or 10 °, for example.

As shown in FIG. 1B and FIG. 3, the adjusting unit 30 is configured so that the light from the light source 11 a of the first light source row 16 and the light from the light source 11 b of the second light source row 17 are converted into a photo-alignment film. The position of the second light source row 17 with respect to the first light source row 16 is adjusted so that 40 is uniformly irradiated. Adjustment unit 30 can adjust the position of the second light source array 17 automatically by drive due to manual or motor in the longitudinal direction X ₂ of the second light source array 17.

  As described above, according to the polarized light irradiation apparatus of the present invention described above, it is possible to uniformly irradiate the light from the light sources 11a and 11b while providing the photo-alignment film 40 with a photo-alignment function in a predetermined photo-alignment direction. it can.

  As shown in FIG. 1B and FIG. 4, the adjusting unit 30 passes through the reference position S through the plurality of light sources 11 a of the first light source array 16 and the plurality of light sources 11 b of the second light source array 17. The second light source array so that the spacing between adjacent light sources 11 of the plurality of light sources 11 (hereinafter referred to as “projection light source spacing D”) when projected onto a plane orthogonal to the surface of the alignment film 40 is equal. The position of 17 can be adjusted.

  As shown in FIG. 5, the first light source row 16 and the second light source row 17 further include a filter 12 and a polarizing material 13, and the light irradiation unit 10 is polarized by the polarizing material 13. The light alignment film 40 can be irradiated with light. The first light source row 16 and the second light source row 17 may further include a protective glass 14 between the polarizing material 13 and the photo-alignment film 40.

  The said filter 12 can permeate | transmit the light of a specific wavelength among the lights from light source 11a, b. The filter 12 prevents light other than the specific wavelength from entering the polarizing material 13.

The polarizing material 13 can polarize the light transmitted through the filter 12. The polarizing material 13 is a kind of polarizer and can be a thin plate. Specifically, the polarizing material 13 is a polarizing beam splitter (PBS: Polarized Beam Splitter) that is a prism having a thin film that transmits P-polarized light and reflects S-polarized light, or a rectangular transparent substrate made of glass or quartz glass. For example, a wire grid (WG: Wire Grid) in which a large number of fine metal wires made of a metal material such as aluminum or silver are provided on one surface in parallel at a constant interval on one plane can be used. . In the case of a wire grid, the polarizing material 13 can transmit linearly polarized light in a direction perpendicular to the arrangement direction of the wire grid out of light incident from the light sources 11a and 11b.

  The protective glass 14 can prevent damage to the polarizing material 13 and adhesion of fine dust and the like. When adhesion of dust or the like occurs, the protective glass 14 can be cleaned.

  The first light source row 16 and the second light source row 17 can be slidably connected to each other.

As shown in FIG. 1B and FIG. 4, in the first embodiment, the rotation unit 20 rotates the light irradiation unit 10 around the vertical direction of the surface of the photo-alignment film 40 as the rotation axis, and the adjustment unit 30. The second light source row 17 can be moved with the longitudinal direction X2 of the _second light source row 17 as the movement axis, and the position of the second light source row 17 with respect to the first light source row 16 can be adjusted.

  2A, when the rotation angle of the light irradiation unit 10 by the rotation unit 20 is 0, the light irradiation unit 10 includes the first light source row 16 and the light source array 16 so that the projection light source intervals D are equal. A second light source row 17 can be arranged.

As shown in FIGS. 1B and 2B, the adjusting unit 30 rotates the projection light source interval D when the light irradiation unit 10 is rotated by the rotation angle θ and the projection light source interval D is not equal. The second light source row 17 is moved in a direction to return the to the same interval. Specifically, as shown in FIG. 4 (a) and 4 (b), the direction to return at regular intervals a projection light source spacing D, and the second light source array 17 in the longitudinal direction X ₂ by the correction distance d _c movement To do. Here, the projection light source interval D when the rotation angle is 0 is x / 2, and the distance between the row of light sources 11a in the first light source row 16 and the row of light sources 11b in the second light source row 17 is d. When the correction distance d _c can be derived as equation (1).

  In the present invention, the case where the light irradiation unit 10 includes the first light source column 16 and the second light source column 17 is illustrated, but the light irradiation unit 10 may further include three or more light source columns.

[Second Embodiment]
A second embodiment of the polarized light irradiation apparatus according to the present invention will be described with reference to FIG.

  The second embodiment is a polarized light irradiation apparatus for performing alignment processing on the photo-alignment film 40 by irradiating light in a specific wavelength region while moving the photo-alignment film 40. The rotating unit 20 and the adjusting unit 30 are provided.

  The photo-alignment film 40 is a film for aligning liquid crystal molecule groups in a certain direction, and may be a polyimide film, for example. The photo-alignment film 40 may be applied to a liquid crystal substrate, for example. A board | substrate can be moved to the irradiation range of the light irradiation part 10 with contact-type stages, such as a conveyor, a roller, a pin, and a table, and a non-contact-type levitation conveyance stage, for example.

  The light irradiation unit 10 includes a first light source row 16 having a plurality of light sources 11a and a second light source row 17 provided to be connected to the first light source rows 16 and having a plurality of light sources 11b. .

  The light sources 11a and 11b irradiate the photo-alignment film 40 with light rays, and can be, for example, rod-shaped lamps. Specifically, the rod-shaped lamp can be a high-pressure mercury lamp, a metal halide lamp, or the like. Further, the light sources 11a and 11b may be light emitting diodes or light sources that are linearly arranged by arranging light emitting diodes in a straight line.

  The rotating unit 20 rotates the light irradiation unit 10 at a predetermined angle from the reference position S relative to the photo-alignment film 40 on a plane parallel to the surface of the photo-alignment film 40. The rotating unit 20 can automatically rotate the angle from the reference position S manually or by driving with a motor or the like. The predetermined angle can be an angle for realizing a polarization characteristic corresponding to a product.

  The adjusting unit 30 is configured so that the light from the light source 11a of the first light source row 16 and the light from the light source 11b of the second light source row 17 are uniformly irradiated to the photo-alignment film 40. The position of the second light source row 17 with respect to the light source row 16 is adjusted. The adjustment unit 30 can adjust the position of the second light source row 17 automatically or manually or by driving with a motor or the like.

As shown in FIG. 6, in the second embodiment, the rotating unit 20 further moves the light irradiation unit 10 using the longitudinal direction X ₁ and the short direction Y ₁ of the first light source row 16 as the movement axes. The adjustment unit 30 moves the second light source row 17 with the longitudinal direction X2 of the _second light source row 17 as the movement axis, and the second light source row 17 with respect to the first light source row 16 is rotated. Can be adjusted.

It is the rotating part 20 in the longitudinal direction X ₁ of the end portion and the left end of the right on the paper of the light irradiation unit 10 first light source array 16, to move the moving distance -d _X1 and d _X1, first of the lateral direction _{Y 1} of the light source array 16 can be rotated by causing the moving distance _{-d Y1} and _{d Y1} moved. Here, the projection light source interval D when the rotation angle is 0 is x / 2, and the distance between the row of light sources 11a in the first light source row 16 and the row of light sources 11b in the second light source row 17 is d. If the number of light sources included in each light source array is n, the movement distances d _X1 and d _Y1 can be derived as in equations (2) and (3).

  In the above example, the rotating unit 20 rotates the irradiation unit 10 by moving the right end and the left end on the paper surface. The irradiation unit 10 may be rotated by moving the part.

The adjusting unit 30, the direction of returning at equal intervals projection light source spacing D, and moves the second light source array 17 in the longitudinal direction X ₂ by the correction distance d _c. Correction distance _{d c} can be derived by equation (4).

  Other configurations and functions are the same as those in the first embodiment.

[Third Embodiment]
A third embodiment according to the present invention will be described with reference to FIGS.

  The third embodiment is a polarized light irradiation apparatus for performing alignment processing on the photo-alignment film 40 by irradiating light in a specific wavelength region while moving the photo-alignment film 40. The rotating unit 20 and the adjusting unit 30 are provided.

  The photo-alignment film 40 is a film for aligning liquid crystal molecule groups in a certain direction, and may be a polyimide film, for example. The photo-alignment film 40 may be applied to a liquid crystal substrate, for example. A board | substrate can be moved to the irradiation range of the light irradiation part 10 by contact-type stages, such as a conveyor, a roller, a pin, a table, and a non-contact type levitation conveyance stage, for example.

  The light irradiation unit 10 includes a first light source row 16 having a plurality of light sources 11a and a second light source row 17 provided to be connected to the first light source rows 16 and having a plurality of light sources 11b. .

  The light sources 11a and 11b irradiate the photo-alignment film 40 with light rays, and can be, for example, rod-shaped lamps. Specifically, the rod-shaped lamp can be a high-pressure mercury lamp, a metal halide lamp, or the like. Further, the light sources 11a and 11b may be light emitting diodes or light sources that are linearly arranged by arranging light emitting diodes in a straight line.

  The rotating unit 20 rotates the light irradiation unit 10 at a predetermined angle from the reference position S relative to the photo-alignment film 40 on a plane parallel to the surface of the photo-alignment film 40. The rotating unit 20 can automatically rotate the angle from the reference position S manually or by driving with a motor or the like. The predetermined angle can be an angle for realizing a polarization characteristic corresponding to a product.

  The adjusting unit 30 is configured so that the light from the light source 11a of the first light source row 16 and the light from the light source 11b of the second light source row 17 are uniformly irradiated to the photo-alignment film 40. The position of the second light source row 17 with respect to the light source row 16 is adjusted. The adjustment unit 30 can adjust the position of the second light source row 17 automatically or manually or by driving with a motor or the like.

Furthermore, in the third embodiment, the rotating unit 20 rotates the first light source row 16 about the vertical direction of the surface of the photo-alignment film 40 as a rotation axis, and the adjusting unit 30 is used for the second light source row 17. the can of the second light source array 17 is moved by the carrier member 35 which carries at both ends in the longitudinal direction X _2, adjusting the position of the second light source array 17 relative to the first light source array 16.

As shown in FIG. 8B, when the rotation angle of the first light source array 16 is 0, the support member 35 has the shortest distance between the support ends of the second light source array 17, and FIG. ) And (c), when the rotation angle of the first light source row 16 is the maximum in the range of angles for realizing the polarization characteristics according to the product, the distance of the carrying end of the second light source row 17 Can be driven to be the longest. Here, the projection light source interval D when the rotation angle is 0 is x / 2, and the distance between the row of light sources 11a in the first light source row 16 and the row of light sources 11b in the second light source row 17 is d. When the number of light sources included in each light source row is n, the shortest carrying end distance l ₁ and the longest carrying end distance l ₂ can be derived from the following equations (5) and (6). .

  The carrying member 35 can be an eccentric member, a cam member, or a spring member.

  Other configurations and functions are the same as those in the first embodiment.

  When the irradiation unit 10 rotates at a predetermined rotation angle, the position of the second light source row 17 is adjusted to adjust the position of the second light source row 17, so that the light orientation shown in FIG. 9 is not adjusted. Compared with the illuminance distribution on the film 40, the illuminance distribution on the photo-alignment film 40 can be made uniform as shown in FIG. 9 and 10, the broken line indicates the illuminance distribution of each of the light sources 11 a and b, and the solid line indicates the illuminance distribution of the irradiation unit 10.

  The light sources 11a and 11b are arranged with overlapping irradiation ranges of the light sources 11a and 11b so that the illuminance distribution on the photo-alignment film 40 becomes uniform when the irradiation unit 10 rotates at a predetermined rotation angle. It is desirable. Further, in the light sources 11a and 11b, the length of the irradiation unit 10 in the short direction is optimized so that the illuminance distribution with respect to the photo-alignment film 40 becomes uniform when the irradiation unit 10 rotates at a predetermined rotation angle. It is desirable.

  Subsequently, an example of the polarized light irradiation method according to the embodiment of the present invention will be described.

  The polarized light irradiation method of the present invention is a polarized light irradiation method for performing alignment treatment on the photo-alignment film 40 by irradiating light in a specific wavelength region while moving the photo-alignment film 40, and includes a light irradiation step. And a rotation step and an adjustment step.

  The light irradiation step includes a first light source row 16 having a plurality of light sources 11a and a second light source row 17 provided to be connected to the first light source rows 16 and having a plurality of light sources 11b.

  In the rotation step, the first light source row 16 and the second light source row 17 are arranged at a predetermined angle from the reference position S relative to the photo-alignment film 40 on a plane parallel to the surface of the photo-alignment film 40. Rotate.

  In the adjustment step, the first light source row is arranged so that the light from the light source of the first light source row 16 and the light from the light source 11b of the second light source row 17 are uniformly irradiated to the photo-alignment film 40. The position of the second light source row 17 with respect to 16 is adjusted.

  Subsequently, an example of the polarized light irradiation program according to the embodiment of the present invention will be described.

  The polarized light irradiation program of the present invention is a polarized light irradiation program for performing alignment treatment on the photo-alignment film 40 by irradiating light of a specific wavelength region while moving the photo-alignment film 40, It is characterized by realizing a rotation function and an adjustment function.

  In the rotation function, the first light source row 16 and the second light source row 17 having a plurality of light sources 11a and 11b are relatively arranged with respect to the photo-alignment film 40 on a plane parallel to the surface of the photo-alignment film 40. Rotate at a predetermined angle from the reference position S.

  In the adjustment function, the first light source so that the light from the light source 11a of the first light source row 16 and the light from the light source 11b of the second light source row 17 are uniformly irradiated to the photo-alignment film 40. The position of the second light source row 17 with respect to the row 16 is adjusted.

  As described above, the polarized light irradiation apparatus, the polarized light irradiation method, and the polarized light irradiation program according to the present invention have been described in detail. However, the present invention is not limited to the above-described embodiment, and the scope of the present invention is not deviated. Various improvements and changes may be made.

A Transport direction B Rotation direction X ₁ Longitudinal direction X of the first light source array X ₂ Longitudinal direction of the second light source array Y ₁ Short direction of the first light source array 10 Light irradiation unit 11 Light source unit 12 Filter 13 Polarizing plate 14 Protective glass 16 1st light source row | line | column 17 2nd light source row | line | column 20 Rotation part 30 Adjustment part 35 Supporting part 40 Photo-alignment film

Claims (12)

A polarized light irradiation device for performing alignment treatment on the photo-alignment film by irradiating light in a specific wavelength region while moving the photo-alignment film,
A first light source array having a plurality of light sources, and a light irradiating section provided in connection with the first light source array, the second light source array having a plurality of light sources;
A rotating unit that rotates the light irradiation unit at a predetermined angle from a reference position relative to the photo-alignment film on a plane parallel to the surface of the photo-alignment film;
The second light with respect to the first light source row is uniformly irradiated with light from the light source of the first light source row and light from the light source of the second light source row. A polarized light irradiation apparatus comprising: an adjustment unit that adjusts the position of the light source array.   The adjusting unit is configured to project the plurality of light sources of the first light source array and the plurality of light sources of the second light source array onto a plane that passes through the reference position and is orthogonal to the surface of the photo-alignment film. The polarized light irradiation apparatus according to claim 1, wherein the position of the second light source array is adjusted so that the intervals between adjacent light sources are equal. The first light source array and the second light source array further include a filter that transmits light of a specific wavelength out of the light from the light source, and a polarizing material that polarizes the light transmitted through the filter. And
The polarized light irradiation apparatus according to claim 1, wherein the light irradiation unit irradiates the light alignment film with light polarized by the polarizing material.   The polarized light irradiation apparatus according to claim 1, wherein the first light source array and the second light source array are slidably connected to each other. The rotating unit rotates the light irradiation unit about a vertical direction of the surface of the photo-alignment film as a rotation axis,
The adjusting unit moves the second light source array with the longitudinal direction of the second light source array as a movement axis, and adjusts the position of the second light source array with respect to the first light source array. The polarized light irradiation device according to any one of claims 1 to 4. The rotating unit rotates the light irradiation unit by moving the first light source row in the longitudinal direction and the short direction as a movement axis,
The adjusting unit moves the second light source array with the longitudinal direction of the second light source array as a movement axis, and adjusts the position of the second light source array with respect to the first light source array. The polarized light irradiation device according to any one of claims 1 to 4. The rotating unit rotates the first light source array about a vertical direction of the surface of the photo-alignment film as a rotation axis,
The adjustment unit adjusts the position of the second light source array with respect to the first light source array by moving the second light source array by a supporting member that supports the second light source array at both ends in the longitudinal direction. The polarized light irradiation apparatus according to claim 1, wherein the polarized light irradiation apparatus includes:   The polarized light irradiation apparatus according to claim 7, wherein the supporting member is an eccentric member.   The polarized light irradiation apparatus according to claim 7, wherein the carrying member is a cam member.   The polarized light irradiation apparatus according to claim 7, wherein the supporting member is a spring member. A polarized light irradiation method for performing alignment treatment on the photo-alignment film by irradiating light in a specific wavelength region while moving the photo-alignment film,
A first light source array having a plurality of light sources, and a light irradiation step provided in connection with the first light source array, the second light source array having a plurality of light sources;
A rotation step of rotating the first light source array and the second light source array at a predetermined angle relative to the photo-alignment film relative to the photo-alignment film on a plane parallel to the surface of the photo-alignment film; ,
The second light with respect to the first light source row is uniformly irradiated with light from the light source of the first light source row and light from the light source of the second light source row. An adjustment step of adjusting the position of the light source row of the polarized light irradiation method. A polarized light irradiation program for performing alignment treatment on the photo-alignment film by irradiating light in a specific wavelength region while moving the photo-alignment film,
A first light source array and a second light source array having a plurality of light sources are rotated at a predetermined angle from a reference position relative to the photo-alignment film on a plane parallel to the surface of the photo-alignment film. Rotation function,
The second light with respect to the first light source row is uniformly irradiated with light from the light source of the first light source row and light from the light source of the second light source row. A polarized light irradiation program that realizes an adjustment function for adjusting the position of the light source array.

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