KR20140058056A - Apparatus for manufacturing light guiding panel - Google Patents

Apparatus for manufacturing light guiding panel Download PDF

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Publication number
KR20140058056A
KR20140058056A KR1020120124594A KR20120124594A KR20140058056A KR 20140058056 A KR20140058056 A KR 20140058056A KR 1020120124594 A KR1020120124594 A KR 1020120124594A KR 20120124594 A KR20120124594 A KR 20120124594A KR 20140058056 A KR20140058056 A KR 20140058056A
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KR
South Korea
Prior art keywords
light guide
guide plate
roller
soft mold
rotation
Prior art date
Application number
KR1020120124594A
Other languages
Korean (ko)
Inventor
홍택의
박지환
홍순국
Original Assignee
엠더스 주식회사
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Application filed by 엠더스 주식회사 filed Critical 엠더스 주식회사
Priority to KR1020120124594A priority Critical patent/KR20140058056A/en
Publication of KR20140058056A publication Critical patent/KR20140058056A/en

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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
    • B29D11/00663—Production of light guides
    • 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
    • B29D11/0073—Optical laminates
    • 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
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The present invention provides a light guide plate manufacturing apparatus capable of simultaneously performing a pattern forming process for forming a pattern layer on a light guide plate and a curing process for curing a light guide plate having a pattern layer formed thereon. To this end, the light guide plate manufacturing equipment according to the present invention comprises two support frames; Two cylindrical rotating parts rotating in a state where one side is mounted on the one support frame; A receiving part having a cylindrical shape in which a hollow is formed therein and both ends of which are fixed to the two support frames from inside of the two rotation parts; And a first roller and a second roller both ends of which are mounted on the two support frames at the lower end of the housing part and are mounted on the two rotation parts for pattern formation, A roller unit for contacting the soft mold and the light guide plate on which the pattern material is formed; And a UV irradiator formed on a rear portion of the roller portion and mounted in a longitudinal direction of the accommodating portion in the hollow portion of the accommodating portion to generate ultraviolet rays toward the roller portion.

Description

[0001] Apparatus For Manufacturing Light Guiding Panel [

The present invention relates to an apparatus for manufacturing a light guide plate which can be applied to a backlight of a liquid crystal display apparatus.

BACKGROUND ART A liquid crystal display (LCD) has no backlight unit as a light source behind a liquid crystal panel because it has no self-emission source. BACKGROUND ART [0002] A backlight unit used as a light source in a liquid crystal display device is classified into a direct-type type and an edge type.

In the direct type method, a light source is disposed on a lower front surface of a liquid crystal panel, and light is directly transmitted to the liquid crystal panel. In the edge type liquid crystal panel, a light source is disposed on a lower side of the liquid crystal panel, It is how it is delivered.

Hereinafter, a conventional edge type liquid crystal display device will be described with reference to the drawings.

FIG. 1 is a schematic cross-sectional view of a conventional liquid crystal display device, and FIG. 2 is a schematic cross-sectional view of a conventional light pipe.

1, a conventional liquid crystal display device includes a liquid crystal panel 1 and a backlight unit 2. As shown in FIG.

The liquid crystal panel 1 has a structure in which a liquid crystal layer is formed between a lower substrate and an upper substrate.

The backlight unit 2 is disposed below the liquid crystal panel 1 to supply light to the liquid crystal panel 1. [

The backlight unit 2 includes a light guide plate 10, a light source 20, optical sheets 30, and a reflection plate 40.

The light guide plate 10 guides the light emitted from the light source 20 toward the liquid crystal panel 1.

The light source 20 is disposed on a side surface of the light guide plate 10 and emits light to a side surface of the light guide plate 10.

The optical sheets 30 allow the light passing through the light guide plate 10 to be uniformly transmitted to the liquid crystal panel 1 and include a combination of a plurality of sheets such as a diffusion sheet and a prism sheet.

The reflection plate 40 is disposed under the light guide plate 10 to prevent light emitted from the light source 20 from being lost to the outside.

2, in the conventional light guide plate 10, a predetermined pattern layer 14 is formed on the substrate 12 in order to change the path of the light.

The conventional light guide plate 10 is formed by applying a predetermined material to the entire surface of the substrate 12 by using a spin coating method and then forming the pattern layer 14 using a predetermined mold Lt; RTI ID = 0.0 > imprinting < / RTI > process.

The light guide plate formed with the pattern layer 140 by the above process is cured by ultraviolet (UV) light or the like to ultimately complete the manufacturing process.

However, since the conventional light guide plate manufacturing equipment for forming the pattern layer 14 on the light guide plate through the imprinting process can not simultaneously perform the process of forming the pattern layer on the light guide plate and the process of curing the pattern layer, Which is a problem in that it can be formed poorly.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems and provides a light guide plate manufacturing apparatus capable of simultaneously performing a pattern forming process for forming a pattern layer on a light guide plate and a curing process for curing a light guide plate having a pattern layer To be a technical challenge.

According to an aspect of the present invention, there is provided an apparatus for manufacturing a light guide plate, comprising: two support frames; Two cylindrical rotating parts rotating in a state where one side is mounted on the one support frame; A receiving part having a cylindrical shape in which a hollow is formed therein and both ends of which are fixed to the two support frames from inside of the two rotation parts; And a first roller and a second roller both ends of which are mounted on the two support frames at the lower end of the housing part and are mounted on the two rotation parts for pattern formation, A roller unit for contacting the soft mold and the light guide plate on which the pattern material is formed; And a UV irradiator formed on a rear portion of the roller portion and mounted in a longitudinal direction of the accommodating portion in the hollow portion of the accommodating portion to generate ultraviolet rays toward the roller portion.

In addition, the present invention is characterized in that it comprises two fixing portions mounted inside the other side of each of the rotating portions in a state of not rotating; And a plurality of rotation bars connected to the two fixing parts along the outer circumferential surface of the receiving part to support the soft mold mounted on the rotation part. A penetrating hole penetrating the hollow is formed on the surface of the receiving part along the longitudinal direction of the hollow. The ultraviolet ray generated in the UV irradiating device is discharged toward the roller through the through hole. The through hole is provided with a discharge portion for guiding ultraviolet rays generated in the UV irradiation device toward the roller portion. And a plurality of ionizers mounted on the two support frames so as to be in close contact with the rotary bar, for removing foreign substances from the soft mold. A sensing unit mounted on the two support frames so as to be in close contact with the rotary bar and sensing a starting position of the soft mold; And a controller for comparing the start position of the soft mold with the position of the light guide plate to control whether the rotation unit rotates. Each of the two rotation parts includes a rotation support plate fixed to the support frame at one side of the rotation part; A cylindrical rotating cylinder connected to and rotating with the rotating support plate; A cylindrical mounting cylinder rotatably connected to the rotation cylinder on the other side of the rotation unit; And a fixing pin connected to the rotation cylinder for closely fixing the soft mold attached to the outer circumferential surface of the mounting cylinder to the outer circumferential surface of the mounting cylinder. The through hole is located at the rear portion of the roller portion to harden the pattern layer of the light guide plate that has passed through the roller portion. At least one of the first roller and the second roller is mounted on the support frame so as to be movable up and down, and depending on the thickness of the light guide plate passing between the first roller and the second roller, And the second roller may be spaced from each other. In the soft mold, a pattern to be transferred is formed on the pattern material of the light guide plate, and the soft mold is formed of a transparent material. The rotary bar is rotatably connected to the two fixing portions and is rotated by contact with the soft mold rotating together with the rotary portion. The through hole is located at a position where the light guide plate and the soft mold are in contact with each other or a position where the light guide plate and the soft mold are separated from each other.

The present invention provides an effect that the pattern layer can be formed more precisely by simultaneously performing a pattern forming step for forming a pattern layer on the light guide plate and a curing step for curing the light guide plate having the pattern layer formed thereon.

1 is a schematic sectional view of a conventional liquid crystal display device.
2 is a schematic sectional view of a conventional light guide plate;
3 is a perspective view of a light guide plate manufacturing apparatus according to the present invention.
4 is a sectional view of an embodiment of a light guide plate manufacturing equipment according to the present invention.
FIGS. 5A to 5C are diagrams for explaining a method of manufacturing a light guide plate according to an embodiment of the present invention; FIGS.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view of a light guide plate manufacturing apparatus according to the present invention. FIG. 4 is a cross-sectional view of a light guide plate manufacturing apparatus according to an embodiment of the present invention, taken along the line A-A 'shown in FIG. 3.

The light guide plate manufacturing equipment according to the present invention can simultaneously perform a pattern forming process for forming a pattern on a pattern material using a soft mold and a curing process for curing the light guide plate having a pattern formed thereon.

3, the light guide plate manufacturing equipment according to the present invention includes two support frames 110, two cylindrical rotary units 120 with one side mounted on the support frame, A plurality of rotation bars 140 rotatably connected to the two fixing portions facing each other, and a plurality of fixing bars 130 facing each other so as to be in close contact with the rotation bars. A plurality of ionizers 150 mounted on the two support frames for removing foreign substances from the soft mold mounted on the rotary bar, two ionizer 150 mounted on two supporting frames facing each other so as to be in close contact with the rotary bar, A sensing part 160 for sensing the starting position of the mold, a cylindrical shape in which a hollow is formed inside, and a space formed by the rotating bars, A UV irradiator 170 installed in the lengthwise direction of the receiving part in the hollow interior of the receiving part to generate ultraviolet rays, a hollow radiator 170 installed on the surface of the receiving part, A discharging portion 180a for emitting ultraviolet rays generated in the UV irradiating device mounted on the through hole passing through the hollow along the longitudinal direction and two support frames facing each other for supporting the substrate at the lower end of the receiving portion And a roller unit 190 mounted thereon.

First, the two support frames 110 are formed in a plate shape as shown in FIG. 3, and support the respective components as described above.

Next, each of the two rotation parts 120 is formed into a cylindrical shape in which one side rotates while being mounted on the support frame 110. The rotation of the rotation unit 120 can be controlled by a driving unit and a control unit (not shown). The rotation unit 120 includes a rotation support plate 124 fixed to the support frame 110 at one side of the rotation unit, a cylindrical rotation cylindrical unit 121 connected to the rotation support plate and rotated, A fixing cylinder 122 for fixing the soft mold attached to the outer circumferential surface of the mounting cylinder 122 to the outer circumferential surface of the mounting cylinder 122, Pin 123 may be included. That is, the end of the soft mold for forming the pattern on the light guide plate is tightly fixed to the outer peripheral surface of the mounting cylinder 122 by the fixing pin 123.

Next, the fixing portion 130 is mounted on the other side of the rotation portion, that is, the inner peripheral surface of the mounting cylinder 122, and is not rotated as the mounting cylinder 122 because it is fixed to the support frame 110 . That is, the fixing portion 130 is fixed to the support frame 110 inside the mounting cylinder 122 without rotating.

Next, the rotation bar 140 is mounted on the two fixing portions 130, both ends of which face each other. The rotary bar 140 includes a rotary shaft fixed to the two fixing portions 130 and a roller rotatably mounted on the outer peripheral surface of the rotary shaft so as to be rotatable in a state of being mounted on the two fixing portions 130 . That is, since the rotary bar 140 is fixed to the fixing portion 130, the rotary bar 140 is not rotated as the rotary portion 120 but is rotated in a fixed state at a fixed position of the fixing portion 130 itself. The reason for rotating the rotary bar 140 is to reduce frictional force between the rotary bar 140 and the soft mold rotating together with the rotary part 120,

4, the soft mold 300 is tightly fixed to the outer circumferential surface of the mounting cylinder 122 by a fixing pin 123 and the bottom surface of the soft mold 300 is fixed to the outer circumferential surface of the rotary bar 140 Respectively. Accordingly, the soft mold 300 is also rotated as the mounting cylinder 122 of the rotary part 120 is rotated. At this time, the bottom surface of the soft mold 300 is in contact with the outer peripheral surface of the rotary bars 140. However, since the rotating bars 140 are being rotated, the soft mold 300 can be rotated without friction with the rotating bars 140 while being supported by the rotating bars 140. [

Next, the ionizer 150 generates ions to remove static electricity or foreign substances. In particular, the ionizer 150 functions to remove foreign substances on the surface of the soft mold 300 rotating together with the mounting cylinder 122. The soft mold 300 functions to form a pattern on the pattern material deposited on the substrate to be introduced into the light guide plate manufacturing equipment according to the present invention while rotating together with the mounting cylinder 122 as described above. Accordingly, the foreign substances are adhered to the soft mold 300 in contact with the pattern material on the substrate. The ionizer 150 performs a function of removing foreign matter attached to the surface of the soft mold 300 after the contact with the pattern material.

3 and 4, the ionizer 150 is mounted on two support frames 110 facing each other so as to be in close contact with the rotation bar 140. [ If it is difficult to remove foreign matter as described above with respect to one ionizer 150, two or more ionizers 150 may be mounted on the support frame 110 as shown in FIG. 3 and FIG.

The ends of the respective ionizers 150 may be fixed to the ionizer fixing part 151 fixed to the support frame 110, as shown in FIG.

Next, the sensing unit 160 senses the start position of the soft mold 300. The precise pattern can be formed on the light guide plate before processing so that the starting position of the light guide plate before processing and the starting position of the soft mold 300 inserted in the present invention must exactly match. However, according to the light guide plate manufacturing apparatus according to the present invention, when the pattern forming process for a plurality of pre-processing light guide plates proceeds, the start position of the soft mold 300 and the start position of the light guide plate before processing are exactly matched .

Accordingly, the present invention forms a separate start mark at the starting position of the soft mold 300, while allowing the sensing unit 160 to recognize the start mark. Information on the start mark recognized by the sensing unit 160 is transmitted to a control unit (not shown). The control unit senses the start position of the light guide plate before processing through a separate sensing device, and determines whether the two start positions coincide with each other. As a result of the determination, if the two start positions match, the pattern formation process proceeds. However, if the two start positions do not coincide with each other, a warning message may be output to the administrator by voice, character, or lamp, while the pattern formation process may be interrupted. That is, the control unit can control whether the pattern formation process is progressed by comparing the start position of the soft mold with the position of the light guide plate to be rotated according to the present invention.

The sensing unit 160 may be formed in various forms to recognize a start mark formed in the soft mold 300.

Next, the accommodating portion 180 may be formed of a cylinder having a hollow inside. Both ends of the storage portion 180 may be mounted on the support frame 110. The receiving portion 180 is located inside the space defined by the rotating bars 140. [

In a part of the surface of the housing part 180, a through-hole penetrating through the hollow is formed along the longitudinal direction of the hollow. Ultraviolet rays generated in the UV irradiation device 170 may be emitted from the through hole. However, the through hole may be provided with a discharge portion 180a for guiding ultraviolet rays generated from the UV irradiation device 170 to the outside of the through hole.

Next, the UV irradiation device 170 performs a function of generating ultraviolet rays. The ultraviolet rays generated in the UV irradiation device perform the function of curing the pattern material in which the pattern is formed by the soft mold 300.

The UV irradiating device 170 is formed in the hollow inside the cylindrical housing part 180 and in the longitudinal direction of the housing part 180. Therefore, the UV irradiation device 170 can irradiate the entire surface of the light guide plate passing through the lower end of the UV irradiation device 170 with ultraviolet rays.

The UV irradiating device 170 may be discharged to the outside of the receiving portion through the through hole formed in the surface of the receiving portion. However, as shown in FIG. 4, Lt; / RTI >

Next, the emitting portion 180a is mounted on the surface of the receiving portion along the longitudinal direction of the hollow to penetrate the hollow and through holes, and emits ultraviolet rays generated in the UV irradiating device 170 to the outside of the receiving portion 180 Function.

A side where the light guide plate is inserted is referred to as a front portion A and a side where a light guide plate with a pattern formed by the soft mold 300 is taken out is referred to as a rear portion A ' And the roller unit 190 are attached to the two support frames 110 in the direction of the front part A of the housing part 180 and function to support the light guide plate.

3, the roller unit 180 is mounted on the front portion A of the storage unit 180 and includes two rollers 191 and 192 facing each other. The light guide plate inserted through the front portion A passes between the two rollers (the first roller 191 and the second roller 192) constituting the roller portion 180 and is carried to the rear portion A '. At this time, the soft mold 300 passing through the roller unit 180 is pressed by the roller unit 190 and contacts the pattern material of the light guide plate passing through the roller unit 190, The pattern formed on the surface of the light guide plate is transferred to the pattern material of the light guide plate. That is, the soft mold 300 rotates together with the mounting cylinder 122 while being wound on the outer peripheral surface of the mounting cylinder 122, and contacts the pattern material of the light guide plate around the roller portion 190 and the roller portion A pattern layer is formed on the light guide plate.

A through hole formed in the housing portion 180 and a discharge portion 180a mounted on the through hole are positioned between the roller portion 180 and the rear portion A 'as shown in FIG.

The light guide plate having the pattern formed by the soft mold 300 in the roller unit 180 passes through the roller unit 180 and is then guided to the ultraviolet rays emitted through the emission unit 180a And is taken out to the rear portion A '.

At least one of the two rollers constituting the roller unit 190 may be mounted on the support frame so as to be movable up and down. For example, in order to support the light guide plate, the second roller 192 attached to the lower end of the light guide plate may be mounted on the support frame 110 so as to be movable up and down. The second roller 192 can be separated from the first roller 191 according to the thickness of the light guide plate passing between the first roller 191 and the second roller 192 mounted on the upper end of the light guide plate .

Meanwhile, the light guide plate manufacturing equipment according to the present invention may include a conveyance unit not shown for conveying the light guide plate.

That is, the light guide plate before the processing, in which the pattern material is deposited on the substrate, is introduced into the front portion A through the conveying portion and is conveyed in the direction of the roller portion 190, and is contacted with the soft mold 300 at the roller portion 190 And after the pattern is formed, it is taken out to the rear portion A '.

The conveying portion may be formed in a belt shape or a plurality of rollers.

Hereinafter, a method of manufacturing a light guide plate according to an embodiment of the present invention will be described with reference to FIGS. 5A to 5C.

5A to 5C are diagrams for explaining a method of manufacturing a light guide plate according to an embodiment of the present invention.

5A, a pattern material 220a is coated on a substrate 210 to prepare a light guide plate 200a before processing.

The substrate 210 may be made of poly methyl methacrylate (PMMA), but the present invention is not limited thereto.

The pattern material 220a may be Methyl Methacrylate (MMA). Since the methyl methacrylate (MMA) is a low molecular substance in a liquid state, such methyl methacrylate (MMA) can be applied to the substrate 210 by a spinless coating method using a printing nozzle.

In performing the spinless coating process, the substrate 210 may be fixed and the printing nozzle may be moved, or the printing nozzle may be fixed and the substrate 210 may be moved.

If necessary, the above-mentioned methyl methacrylate (MMA) can be further coated with an additive such as a polymerization initiator and a curing agent.

Meanwhile, although not shown, the applied pattern material 220a may be gelated by performing an infrared ray (IR) or UV drying process after the pattern material 220a is applied. In addition, after the IR or UV drying process, the expanded substrate 210 can be restored during the drying process by performing the cooling process.

5B, a pattern 221 is formed on the pattern material 220a by contacting a predetermined soft mold 300 with the pattern material 220a using the light guide plate manufacturing apparatus according to the present invention. do.

The soft mold 300 is formed in consideration of the shape of the pattern layer 220 to be finally obtained. For example, the soft mold 300 may have various shapes such as a triangle, a circle, an ellipse, The pattern having such a cross section can be variously modified by a stripe shape, a matrix shape, a dot shape, or the like.

A method of forming the pattern 221 on the pattern material 220a will now be described in more detail.

The soft mold 300 is fixed to the outer circumferential surface of the mounting cylinder 122 of the light guide plate manufacturing equipment according to the present invention using the fixing pin 123.

When the soft mold 300 is fixed, the rotation part 120 including the mounting cylinder 122 is rotated. The soft mold 300 is rotated together with the mounting cylinder 122. The soft mold 300 is rotated in a state supported by the rotating bar 140 itself rotating. At this time, the light guide plate 200a before the processing is put in the direction of the front part A of the storage part 180 through a transfer part (not shown).

The light guiding plate 200a in the front portion A is brought into contact with the soft mold 300 near the roller portion 190 and is brought into close contact with the soft mold 300 while passing through the roller portion 190. [ The pattern material 220a applied on the substrate 210 of the light guide plate 200a before processing is formed on the surface of the soft mold 300 by the close contact between the soft mold 300 and the light guide plate 200a before processing The pattern is transferred.

The pattern layer 220 having the pattern formed by the soft mold 300 passes through the discharge portion 180a adjacent to the roller portion 190 and is discharged to the outside of the storage portion 180 through the discharge portion 180a It is cured by ultraviolet rays. That is, the present invention is characterized in that the pattern layer 220 on which the pattern 221 is formed is cured immediately after the pattern is transferred to the pattern material 210a. The ultraviolet rays are emitted from the UV irradiator 170 mounted inside the accommodating portion 180.

The hardening process for the pattern layer 220 may be performed while the soft mold 300 is in contact with the pattern material 220a and may be performed while the soft mold 330 is spaced apart from the pattern layer 220. [ . This can be variously performed depending on the position of the discharge portion 180a. In any case, since the ultraviolet rays emitted from the emitting portion 180 can only reach the pattern layer 220 through the soft mold 300, the soft mold 300 can be formed using a transparent material .

The soft mold 300 and the pattern layer 220 are separated from each other through the roller portion 190 and the discharge portion 180a.

The ionizer 150 is attached to the support frame 110 so that the ionizer 150 can be brought into close contact with the saw mold 300 on the rear portion A 'of the storage portion 180. Accordingly, the foreign substances adhered to the surface of the soft mold 300 passing through the discharge portion 180a can be removed by the ionizer 150. As described above, at least two ionizers 150 may be provided in the present invention.

As the mounting cylinder 122 is continuously rotated, the starting position of the soft mold 300 also returns to its original position. At the start position of the soft mold 300, a start mark is formed as described above.

5B, a sensing unit 160 for sensing a start mark is mounted on the front portion A of the storage unit 130. As shown in FIG. Information on the start mark recognized by the sensing unit 160 is transmitted to a control unit (not shown). The control unit senses the start position of the light guide plate before processing through a separate sensing device, and determines whether the two start positions coincide with each other. As a result of the determination, if the two start positions match, the pattern formation process proceeds. However, if the two start positions do not coincide with each other, a warning message may be output to the administrator by voice, character, or lamp, while the pattern formation process may be interrupted.

5C, during the process described above, the light guide plate 200 having the pattern layer 220 formed on the substrate 210 is taken out to the rear portion of the receiving portion 180, The light guide plate 200 is transferred to another process.

At the same time as the light guide plate 200 is unloaded, another light guide plate 200a is inserted into the front portion A of the receiving portion 180. The present invention repeatedly performs the above-described process.

The above-mentioned substances will be further described as follows.

5A, a bead structure composed of an oxide such as SnO2, TiO2, ZnO2, SiO2, CeO2, or the like may be contained in the pattern material 220a and may be applied on the substrate 210. [

The substrate 210 is made of a transparent material, and in particular, poly methyl methacrylate (PMMA) may be used. Polymethyl methacrylate (PMMA) is excellent in transmittance characteristics and can be suitably used as a material for a light guide plate. However, the substrate 220 is not limited to polymethyl methacrylate (PMMA).

The substrate 210 functions as a base of the light guide plate.

The pattern layer 220 is formed on one surface of the substrate 210. The pattern material 220a for forming the pattern layer 220 may be applied to the surface of the substrate 210 using a spinless coating process instead of a spin coating process. Therefore, according to the present invention, the material for forming the pattern layer 200 is not wasted and the material cost is reduced.

The surface of the pattern layer 220 may have a concavo-convex structure, and the convexo-concave structure may have various shapes such as a circular shape, an elliptic shape, and the like, as well as a triangular shape. In addition, the unevenness (pattern) 221 structure having such a cross section may be formed in a planar shape in a stripe shape, a matrix shape, a dot shape, or the like.

By applying such various pattern layers 220, it is possible to obtain the effect of not using the optical sheet like the prism sheet in the backlight unit or reducing the number of the optical sheets.

The pattern layer 220 may be made of poly methyl methacrylate (PMMA). In this case, the poly (methyl methacrylate) (PMMA) may be Methyl Methacrylate (MMA) Or the like. Accordingly, the pattern layer 220 made of the polymethyl methacrylate (PMMA) can be obtained on the substrate 210 without a separate adhesive. That is, no adhesive is applied between the substrate 210 and the predetermined pattern layer 220.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

110: support frame 120:
130: fixing part 140: rotating bar
150: ionizer 160: sensing unit
170: UV irradiation device 180:
180a: emitting portion 190: roller portion

Claims (12)

Two support frames;
Two cylindrical rotating parts rotating in a state where one side is mounted on the one support frame;
A receiving part having a cylindrical shape in which a hollow is formed therein and both ends of which are fixed to the two support frames from inside of the two rotation parts;
And a first roller and a second roller both ends of which are mounted on the two support frames at the lower end of the housing part and are mounted on the two rotation parts for pattern formation, A roller unit for contacting the soft mold and the light guide plate on which the pattern material is formed; And
And a UV irradiator formed on a rear surface of the roller unit and mounted in the lengthwise direction of the receiving unit in the cavity of the receiving unit to generate ultraviolet rays toward the roller unit. The method according to claim 1,
Two fixing portions mounted inside the other side of each of the rotation portions in a state of not rotating; And
And a plurality of rotation bars connected to the two fixing parts along the outer circumferential surface of the receiving part to support the soft mold mounted on the rotation part. The method according to claim 1,
Wherein a penetrating hole penetrating the hollow is formed along a longitudinal direction of the hollow portion on the surface of the receiving portion and ultraviolet rays generated in the UV irradiating device are discharged toward the roller portion through the through hole. Light guide plate manufacturing equipment. The method of claim 3,
Wherein the through hole is provided with a discharge portion for guiding ultraviolet rays generated in the UV irradiator toward the roller portion. 3. The method of claim 2,
Further comprising a plurality of ionizers mounted on the two support frames so as to be in close contact with the rotary bar to remove foreign substances from the soft mold. 3. The method of claim 2,
A sensing unit mounted on the two support frames so as to be in close contact with the rotary bar and sensing a starting position of the soft mold; And
Further comprising a control unit for controlling the rotation of the rotary unit by comparing the starting position of the soft mold with the position of the light guide plate. The method according to claim 1,
Wherein each of the two rotating parts comprises:
A rotation support plate fixed to the support frame at one side of the rotation part;
A cylindrical rotating cylinder connected to and rotating with the rotating support plate;
A cylindrical mounting cylinder rotatably connected to the rotation cylinder on the other side of the rotation unit; And
And a fixing pin connected to the rotation cylinder and fixed to the outer circumferential surface of the mounting cylinder for fixing the soft mold attached to the outer circumferential surface of the mounting cylinder. The method of claim 3,
The through-
Wherein the light guide plate is positioned at a rear portion of the roller portion to cure the pattern layer of the light guide plate that has passed through the roller portion. The method according to claim 1,
At least one of the first roller and the second roller is mounted on the support frame so as to be movable up and down, and depending on the thickness of the light guide plate passing between the first roller and the second roller, And the second roller can be spaced apart from each other. The method according to claim 1,
Wherein the soft mold is formed with a pattern to be transferred to a pattern material of the light guide plate, and the soft mold is formed of a transparent material. 3. The method of claim 2,
The rotation bar
Wherein the light guide plate is rotatably connected to the two fixing portions and is rotated by contact with the soft mold rotating together with the rotation portion. The method of claim 3,
The through-
Wherein the light guide plate is located at a position where the light guide plate and the soft mold are in contact with each other or at a position where the light guide plate and the soft mold are separated from each other.
KR1020120124594A 2012-11-06 2012-11-06 Apparatus for manufacturing light guiding panel KR20140058056A (en)

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