KR101787079B1 - Pattern forming apparatus and method - Google Patents

Pattern forming apparatus and method Download PDF

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Publication number
KR101787079B1
KR101787079B1 KR1020100108967A KR20100108967A KR101787079B1 KR 101787079 B1 KR101787079 B1 KR 101787079B1 KR 1020100108967 A KR1020100108967 A KR 1020100108967A KR 20100108967 A KR20100108967 A KR 20100108967A KR 101787079 B1 KR101787079 B1 KR 101787079B1
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KR
South Korea
Prior art keywords
optical
pair
light guide
guide plate
pattern
Prior art date
Application number
KR1020100108967A
Other languages
Korean (ko)
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KR20120047417A (en
Inventor
노성우
권건영
이강식
이준환
권종태
강연숙
김선호
Original Assignee
미래나노텍(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 미래나노텍(주) filed Critical 미래나노텍(주)
Priority to KR1020100108967A priority Critical patent/KR101787079B1/en
Publication of KR20120047417A publication Critical patent/KR20120047417A/en
Application granted granted Critical
Publication of KR101787079B1 publication Critical patent/KR101787079B1/en

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/10Light guides of the optical waveguide type
    • G02B6/12Light guides of the optical waveguide type of the integrated circuit kind
    • G02B6/13Integrated optical circuits characterised by the manufacturing method
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • B29C59/046Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for layered or coated substantially flat surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/10Light guides of the optical waveguide type
    • G02B6/12Light guides of the optical waveguide type of the integrated circuit kind
    • G02B2006/12166Manufacturing methods
    • G02B2006/12197Grinding; Polishing

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pattern forming apparatus and method for forming a predetermined pattern on at least one side surface of an optical material, and more particularly to a pattern forming apparatus according to an embodiment of the present invention, A stage; A mount unit provided on the stage and on which the optical material is seated; And a pair of stamping units provided on both sides of the seating unit for pressing both sides of the optical material to form a pattern on at least one side of the optical material, wherein at least one of the seating unit and the stamping unit Is moved along the longitudinal direction of the optical material.

Description

TECHNICAL FIELD [0001] The present invention relates to a pattern forming apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a pattern forming apparatus and method, and more particularly, to a pattern forming apparatus and method for forming a pattern of a predetermined shape on at least one side surface of an optical material.

In general, a backlight unit used in an LCD (liquid crystal display) uses a light guide plate to supply surface light to the panel. In this case, a light emitting diode (LED), a light emitting diode (LED), or a fluorescent lamp, which is a light source, is used as a light source of the backlight unit. A light guide plate is a means for converting light to light.

1B is a perspective view showing a light guide plate having a pattern formed on a side surface thereof.

Referring to FIG. 1A, the backlight unit includes a light source 30 and a light guide plate 10, and the light source 30 includes a plurality of LEDs for providing a plurality of light fluxes. Then, the light source 30, that is, a plurality of LEDs is mounted on the side surface of the light guide plate at a predetermined interval. In this case, a pin 20 is disposed between the plurality of light sources 30. The pins 20 form an arm portion on the light guide plate 10, thereby forming a spot on which the dark portion and the dark portion appear on the outer surface of the LCD. .

In order to solve this problem, a predetermined pattern is formed on the side light incoming portion of the light guide plate 10 as shown in FIG. 1B, thereby changing the path of the point light emitted from the LED, thereby eliminating the dark portion formed by the pin.

Various techniques such as an injection method, an extrusion method, a printing method, a laser method, and a stamping method are used for patterning the light guide plate. Among the above-mentioned methods, the patterning method on the side surface of the light guide plate may be an injection method, an extrusion method, and a stamping method.

The double injection molding method is difficult because it is difficult to apply to the manufacture of large-sized products by manufacturing patterns by filling molds with raw materials and there is a disadvantage that it takes a lot of cost to manufacture a mold for pattern change.

In the extrusion method, the product is manufactured by applying the pattern to the nozzle at the inlet where the raw material is taken out. Local patterning is difficult, and it is difficult to manufacture the nozzle mold. In addition, the extrusion method is manufactured in the product production direction.

In addition, there has been a problem that a very high pressure must be provided in order to produce a pattern on the side surface of the light guide plate.

An embodiment of the present invention provides a pattern forming apparatus and method for forming a predetermined pattern on a side surface of a light guide plate using a stamping method.

The embodiments of the present invention also provide a pattern forming apparatus and method capable of easily adjusting the pressing pressure and temperature of a rotating roller for pressing a side surface of a light guide plate to form a predetermined pattern and controlling the speed of a light guide plate or a rotating roller with ease .

The embodiments of the present invention are also directed to a pattern forming apparatus and method capable of variously forming a pattern by using a device in which a rotating roller having various patterns is replaceably mounted or a stamper having various patterns formed on a rotating roller is replaceably mounted to provide.

A pattern forming apparatus according to an embodiment of the present invention is an apparatus for forming a pattern on a side surface of an optical material, comprising: a stage; A mount unit provided on the stage and on which the optical material is seated; And a pair of stamping units provided on both sides of the seating unit for pressing both sides of the optical material to form a pattern on at least one side of the optical material, wherein at least one of the seating unit and the stamping unit Is moved along the longitudinal direction of the optical material.

Wherein the stamping unit comprises: a pair of rotating rollers provided on both sides of the seating unit, rotated while pressing the side surface of the optical material in the width direction of the optical material, and a pattern is formed on at least one of the outer peripheral surfaces; And a pair of roller housings for respectively supporting both ends of the central axis of the pair of rotating rollers.

The stamping unit includes a cross beam integrally connecting the pair of roller housings.

The stamping unit includes a heater for heating the rotating roller.

The stamping unit includes a piston for adjusting the degree of pressing by advancing or retracting the pair of roller housings in the lateral direction of the optical material.

And a stamper mounted on the outer circumferential surface of the rotating roller so as to be replaceable and forming a pattern on a side surface of the optical material.

Wherein the stage is provided with a pair of stamping rails parallel to the longitudinal direction of the optical material to both sides of the seat unit, the seat unit being fixed to the stage, .

Wherein at least one seating unit rail is formed on the stage at a lower portion of the seating unit along the longitudinal direction of the optical material so that the seating unit is slid along the seating unit rail and the pair of stamping units are fixed to the stage .

And a cover member disposed in close contact with an upper surface of the optical material placed on the stage to prevent the optical material from being bent upward.

A method of forming a pattern according to an embodiment of the present invention is a method of forming a pattern on a side surface of an optical material, comprising the steps of: placing an optical material; Disposing a rotating roller having a pattern on both sides of the optical material; Pressing both sides of the optical material with the pair of rotating rollers; And patterning a side surface of the optical material while moving at least one of the seating unit and the stamping unit along the longitudinal direction of the optical material.

And the rotating roller is heated in the step of patterning the side surface of the optical material.

And the degree of pressing the optical material with the rotating roller is controlled in the step of patterning the side surface of the optical material.

And the moving speed of the seating unit or the stamping unit is adjusted in the step of patterning the side surface of the optical material.

According to the embodiment of the present invention, a predetermined pattern can easily be formed on the side surface of the optical material by using the stamping method.

Further, the pressing pressure, the temperature and the speed of the rotating roller for pressing the side surface of the optical material can be freely adjusted, so that a pattern can be formed on an optical material of various materials in one apparatus, and the depth of the pattern can be freely adjusted.

Various patterns can be easily formed in one apparatus by preparing a rotating roller having various patterns or preparing a stamp having various patterns and easily replacing the apparatus with a device.

1A is a configuration diagram showing a configuration of a general backlight unit,
1B is a perspective view showing a light guide plate having a pattern formed on a side surface thereof,
2 is a conceptual diagram illustrating a concept of a pattern forming apparatus according to an embodiment of the present invention,
3 is a perspective view schematically showing a pattern forming apparatus according to an embodiment of the present invention,
4A and 4B are front views showing the operation of the pattern forming apparatus according to an embodiment of the present invention,
5 and 6 are conceptual diagrams illustrating the concept of a pattern forming apparatus according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

FIG. 2 is a conceptual diagram illustrating the concept of a pattern forming apparatus according to an embodiment of the present invention, FIG. 3 is a perspective view schematically showing a pattern forming apparatus according to an embodiment of the present invention, FIG. 4A and FIG. FIG. 3 is a front view showing the operation of the pattern forming apparatus according to an embodiment of the present invention; FIG.

First, the present invention relates to an apparatus for forming a predetermined pattern on side surfaces of various materials. In the present embodiment, the light guide plate 10, which is one of optical materials, will be described as an example. Of course, the material to be applied to the pattern forming apparatus of the present invention is not limited to the light guide plate shown in the present invention, but may be various materials such as a micro lens, a prism, an optical sheet, Materials and the like may be used.

As shown in the drawing, a pattern forming apparatus according to an embodiment of the present invention roughly comprises a stage 100; A seating unit 200 provided on the stage 100 and on which the light guide plate 10 is mounted; And a pair of stamping units 300 installed on both sides of the seating unit 200 to press both side surfaces of the light guide plate 10 to form a predetermined pattern on at least one side surface of the light guide plate 10 do.

The stage 100 provides a space in which the processing object to be patterned, that is, a space where the light guide plate 10 is seated and other components are installed. Although it is preferable that the stage 100 is provided flat, it may be changed corresponding to the shape of the seating unit 200 and the stamping unit 300.

The seat unit 200 is preferably a plate having a flat top surface in conformity with the shape of the light guide plate 10 as means for seating and fixing the light guide plate 10. It is preferable that the length and width of the seat unit 200 are matched with the length of the light guide plate 10 in the X axis direction and the width of the light guide plate 10 in the Y axis direction, The width of the seat unit 200 may be slightly smaller than the width of the light guide plate 10 so as to be exposed to the outside of the seat unit 200. [ Of course, the seat unit 200 is not limited to a plate shape, but may be implemented in various ways that can stably fix the light guide plate 10. For example, a pin-type seating or a method of supporting only the edge of the light guide plate 10 can be applied.

On the upper surface of the stage 100, a pair of stamping rails 110 are formed parallel to the longitudinal direction of the light guide plate 10 on both sides of the seating unit 200. The seating unit 200 is fixed to the upper surface of the stage 100 so that the pair of stamping units 300 are slid along the stamping rail 110. The patterning operation is performed while moving along the longitudinal direction of the light guide plate 10 of the stamping unit 300 while the position of the light guide plate 10 is fixed.

The stamping unit 300 includes means for forming a predetermined pattern by pressing the side face of the light guide plate 10 and includes a pair of rotating rollers 310 rotated while pressing the side face of the light guide plate 10, A pair of roller housings 330 for supporting both ends of the central axis of the pair of rotation rollers 310 and a cross beam 340 for integrally connecting the pair of roller housings 330.

The pair of rotating rollers 310 are means for performing a patterning operation by directly pressing the light guide plate 10 with a predetermined pattern formed on at least one outer circumferential surface or a stamper 320 having a separate pattern formed thereon, One on each side of the light guide plate 10. In this case, when a pattern is formed only on one side of the light guide plate 10, a rotating roller 310 having a pattern or a stamper 320 having a separate pattern is mounted on one side of the light guide plate 10, And the rotation roller 310 on which the pattern is not formed is arranged on the other side surface. If a pattern is formed on both side surfaces of the light guide plate 10, a rotating roller 310 having a pattern or a stamper 320 having a separate pattern is mounted on both sides of the light guide plate 10, ).

Each rotation roller 310 is provided with a central axis which is the center of rotation along the thickness direction (Z-axis direction in the figure) of the light guide plate 10. (rotated on the XY plane about the Z axis in the drawing) The outer peripheral surface of the roller 310 is rotated while pressing the side surface of the light guide plate 10. Accordingly, the annular stamper 320 is mounted on the outer circumferential surface of the rotary roller 310 so as to be rotatable along the outer circumferential surface of the pattern formed on the outer circumferential surface. At this time, the stamper 320 means a means in which a predetermined pattern is formed on the outer peripheral surface.

The roller housing 330 is a means for supporting the center shaft 311 of the rotation roller 310 so as to enable the rotation of the rotation roller 310, A lower plate 333 and a side plate 335 integrally fixing the upper plate 331 and the lower plate 333 so as to rotatably support the lower ends of the upper plate 331 and the lower plate 333, . Of course, the configuration of the roller housing 330 is not limited to this, and various configurations may be implemented to support the rotation of the rotation roller 310 to be possible. At this time, it is preferable that the side plate 335 is provided on the opposite side where the light guide plate 10 is disposed.

The roller housing 330 is provided with a heater 350 for heating the rotating roller 310. The heater 350 is a means for directly or indirectly heating the rotating roller 310 in various manners. In this embodiment, for example, a heating rod 351, which is a heating means of the heater 350, So as to directly heat the rotating roller 310 by heating the heating rod 351. [ Of course, the method of the heater 350 and the heating of the rotating roller 310 are not limited to the illustrated embodiments, but may be implemented in various ways and changed.

The cross beam 340 is a means for integrally connecting the pair of roller housings 330, and a pair of roller housings 330 are mounted on both ends of the cross beam 340. At this time, a piston 360 is provided between the cross beam 340 and the pair of roller housings 330. Thus, by operating the piston 360, the pair of roller housings 330 are moved forward or backward in the lateral direction of the light guide plate 10 (the Y-axis direction in the figure) to adjust the degree of pressing.

A driving block 341 slidably mounted on the stamping rail 110 is provided at both lower ends of the cross beam 340.

A pair of the driving blocks 341 are provided corresponding to the stamping rail 110. The pair of driving blocks 341 are guided by the pair of stamping rails 110 and are slid along the longitudinal direction of the light guide plate 10. At this time, the driving block 341 is provided with a driving unit (not shown) for driving, respectively, and the driving of the driving unit is individually controlled. The drive unit may be, for example, a combination of a linear motor for generating linear motion and a motor for rotating the ball screw and the ball screw. However, the present invention is not limited to this, and any method may be applied as long as the operation of sliding the drive block 341 on the stamping rail 110 can be controlled.

The pair of roller housings 330 may be integrally connected and slid by the cross beams 340. The pair of roller housings 330 may be installed on the pair of driving blocks 341 So as to be independently slidable. Further, only one roller housing of the pair of roller housings 330 may be slid and the other roller housing may be fixed to a predetermined position. Accordingly, it is preferable that the sliding manner of the pair of roller housings 330 is selected and implemented in the most efficient manner among various methods.

The operation of the pattern forming apparatus according to an embodiment of the present invention will now be described with reference to the drawings.

4A and 4B are front views showing the operation of the pattern forming apparatus according to an embodiment of the present invention.

In order to perform lateral patterning of the light guide plate 10, first, the light guide plate 10 is fixed to the seating unit 200 as shown in FIG. 4A. Then, a rotary roller 310 having a desired pattern is mounted on the roller housing 330 provided at both ends of the cross beam 340. Then, the cross beam 340 is moved backward and disposed at the rear end of the light guide plate 10. So that the rotary roller 310 provided on the cross beam 340 is disposed on the side rear end of the light guide plate 10. Then, the heater is operated to heat the rotating roller 310.

Then, the piston 360 is operated as shown in FIG. 4B so that the rotary roller 310 presses the side surface of the light guide plate 10. At this time, a pattern formed on the outer peripheral surface of the rotary roller 310 or a stamper 320 mounted on the rotary roller 310 presses the side surface of the light guide plate. A pattern is formed on a side surface of the light guide plate 10 by a pattern or a stamper 320 formed on the outer circumferential surface of the rotary roller 310. [ At this time, the cross beam 340 is slid along the longitudinal direction (X-axis direction in the figure) of the light guide plate. The rotating roller 310 is rotated while pressing the side surface of the light guide plate 10 so that the pattern or the stamper 320 formed on the outer circumferential surface of the rotating roller 310 continuously moves the side surface of the light guide plate 10 Patterning. At this time, the degree of pressing the side surface of the light guide plate can be adjusted by adjusting the piston 360 so that the depth of the pattern formed on the side surface of the light guide plate 10 can be adjusted. Also, the depth of the pattern formed on the side surface of the light guide plate 10 can be adjusted by controlling the moving speed of the cross beam 340.

If a different type of pattern is to be formed on the light guide plate 10, the rotating roller 310 having a pattern formed on the outer circumferential surface thereof or the stamper 320 mounted on the rotating roller 310 may be used.

In the above-described embodiment, the light guide plate 10 is fixed in position, and the side surface of the light guide plate 10 is patterned while the rotation roller 310 is moving. However, the present invention is not limited thereto, The side face of the light guide plate 10 can be patterned while the light guide plate 10 is moved.

5 is a conceptual diagram illustrating the concept of a pattern forming apparatus according to another embodiment of the present invention.

5, the rotating roller 310 is rotatable in a fixed position, and the seating unit 200, on which the light guide plate 10 is mounted, Back direction in the longitudinal direction of the light guide plate 10 on the light guide plate 100.

At this time, on the stage 100, the seating unit rail 120 on which the seating unit 200 is slid is not provided at least along the longitudinal direction of the light guide plate 10, while the stamping rail 110 on which the cross beam 340 slides is not provided, One or more. Therefore, the light guide plate 10 is moved back and forth in the longitudinal direction by sliding the seating unit 200 along the seating unit rail 120.

6 is a conceptual diagram illustrating the concept of a pattern forming apparatus according to another embodiment of the present invention. When the rotating roller 310 simultaneously presses both sides of the light guide plate 10, 200, the light guide plate 10 may be bent convexly according to the degree of pressure. Therefore, in this embodiment, the light guide plate 10 further includes a cover member 400 disposed in close contact with the upper surface of the light guide plate 10 in order to prevent the light guide plate 10 from being bent by any pressure.

The cover member 400 is disposed in a close contact with the upper surface of the light guide plate 10 so as to prevent warpage of the light guide plate 10 and is preferably formed in a flat plate conforming to the top surface shape of the light guide plate 10 Do.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

10: light guide plate 100: stage
10: stamping rail 120: seat unit rail
200: seat unit 300: stamping unit
310: rotating roller 311:
320: stamper 330: roller housing
331: top plate 333: bottom plate
335: side plate 340: cross beam
341: driving block 350: heater
351: Heating rod 360: Piston
400: cover member

Claims (13)

  1. An apparatus for forming a pattern on a side surface of an optical material,
    A stage;
    A mount unit provided on the stage and on which the optical material is seated;
    And a pair of stamping units provided on both sides of the seat unit for pressing both sides of the optical material to form a pattern on at least one side of the optical material,
    Further comprising a cover member formed in a shape conforming to the top surface shape of the optical material and disposed closely in contact with an upper surface of the optical material placed on the stage to prevent the optical material from being bent upward,
    Wherein at least one of the seating unit and the stamping unit is moved along the longitudinal direction of the optical material.
  2. The stapling apparatus according to claim 1,
    A pair of rotation rollers provided on both sides of the seating unit and rotated while pressing the side surface of the optical material in the width direction of the optical material, and a pattern is formed on at least one of the outer peripheral surfaces;
    A pair of roller housings for respectively supporting both ends of the central axis of the pair of rotating rollers;
    A heater for heating the rotating roller;
    And a piston for moving the pair of roller housings forward or backward in the lateral direction of the optical material to adjust the degree of pressing,
    And a stamper mounted on an outer circumferential surface of the rotating roller so as to be replaceable and forming a pattern on a side surface of the optical material.
  3. The stapling apparatus according to claim 2,
    And a cross beam integrally connecting the pair of roller housings,
    The stage is provided with a pair of stamping rails parallel to the longitudinal direction of the optical material to both sides of the seating unit,
    Wherein the seating unit is fixed to the stage,
    And the cross beam is slid along the pair of stamping rails.
  4. The method of claim 2,
    Wherein at least one seating unit rail is formed on a lower portion of the seating unit along the longitudinal direction of the optical material so that the seating unit is slid along the seating unit rail,
    And the pair of stamping units are fixed to the stage.
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KR1020100108967A 2010-11-04 2010-11-04 Pattern forming apparatus and method KR101787079B1 (en)

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KR1020100108967A KR101787079B1 (en) 2010-11-04 2010-11-04 Pattern forming apparatus and method

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Application Number Priority Date Filing Date Title
KR1020100108967A KR101787079B1 (en) 2010-11-04 2010-11-04 Pattern forming apparatus and method

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KR20120047417A KR20120047417A (en) 2012-05-14
KR101787079B1 true KR101787079B1 (en) 2017-10-19

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004082437A (en) * 2002-08-26 2004-03-18 Meiki Co Ltd Apparatus for molding light guiding plate and method for molding light guiding plate
JP2010188731A (en) * 2008-02-27 2010-09-02 Sharp Corp Roller type nano-imprinting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004082437A (en) * 2002-08-26 2004-03-18 Meiki Co Ltd Apparatus for molding light guiding plate and method for molding light guiding plate
JP2010188731A (en) * 2008-02-27 2010-09-02 Sharp Corp Roller type nano-imprinting device

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