KR101582220B1 - The method for manufacturing light guide plate - Google Patents

The method for manufacturing light guide plate Download PDF

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Publication number
KR101582220B1
KR101582220B1 KR1020140018838A KR20140018838A KR101582220B1 KR 101582220 B1 KR101582220 B1 KR 101582220B1 KR 1020140018838 A KR1020140018838 A KR 1020140018838A KR 20140018838 A KR20140018838 A KR 20140018838A KR 101582220 B1 KR101582220 B1 KR 101582220B1
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South Korea
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guide plate
light guide
cutting
light
manufacturing
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KR1020140018838A
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Korean (ko)
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KR20150097945A (en
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오승묵
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주식회사 대양기술
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/02—Bevelling
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Planar Illumination Modules (AREA)

Abstract

본 발명은 대면적으로 제조된 도광판 원판을 필요한 크기로 절단하여 도광판을 제조하는 경우에 정밀한 절단면 가공이 요구되는 광입사면에 대하여 이중 절단 작업을 진행하여 별도의 가공 작업 없이 필요한 크기의 도광판을 제조할 수 있는 도광판 제조방법에 관한 것으로서, 본 발명에 따른 도광판 제조방법은, ) 도광판 원단을 제조하는 단계; 2) 상기 도광판 원단을 필요한 크기로 절단하되, 광입사면 형성 측은 여분을 포함한 상태로 예비 절단하여 예비 절단 도광판을 만드는 단계; 3) 예비 절단 도광판 중 광입사면 형성 측면에서 여분을 정밀 절단 칼날로 정밀 절단하여 도광판을 만드는 단계;를 포함한다. In the case of manufacturing a light guide plate by cutting a large-area original light guide plate to a required size, a double-cut operation is performed on a light incident surface requiring precise cut surface processing, thereby manufacturing a light guide plate of a required size without any additional processing A method of manufacturing a light guide plate according to the present invention includes the steps of: fabricating a light guide plate fabric; 2) cutting the light guide plate into a required size, and preliminarily cutting the light incident surface forming side so as to include redundant parts, thereby forming a preliminary cutting light guide plate; 3) precisely cutting the extra light from the side of the light incidence plane forming side of the preliminary cutting light guide plate to a precise cutting blade to make a light guide plate.

Description

도광판 제조방법{THE METHOD FOR MANUFACTURING LIGHT GUIDE PLATE}TECHNICAL FIELD The present invention relates to a method of manufacturing a light guide plate,

본 발명은 도광판 제조방법에 관한 것으로서, 보다 상세하게는 대면적으로 제조된 도광판 원판을 필요한 크기로 절단하여 도광판을 제조하는 경우에 정밀한 절단면 가공이 요구되는 광입사면에 대하여 이중 절단 작업을 진행하여 별도의 가공 작업 없이 필요한 크기의 도광판을 제조할 수 있는 도광판 제조방법에 관한 것이다. The present invention relates to a light guide plate manufacturing method, and more particularly, to a light guide plate manufactured by cutting a large-area original light guide plate to a required size, a double cut operation is performed on a light incident surface requiring a precise cut surface To a method of manufacturing a light guide plate capable of manufacturing a light guide plate of a required size without any additional processing work.

최근에 디스플레이 수단으로 널리 사용되는 액정표시장치(Liquid Crystal Display)는 자체적으로 발광하지 못하는 디바이스이다. 따라서 상기 액정 표시장치를 구동하기 위해서는 백라이트 유닛(Back Light Unit)이 필요하다. BACKGROUND ART [0002] Liquid crystal displays (LCDs) widely used as display means in recent years are devices that do not emit light themselves. Therefore, a backlight unit is required to drive the liquid crystal display device.

일반적으로 백라이트 유닛(1)에는 도 1에 도시된 바와 같이, 측면에 광원(10)이 설치되고, 이 광원(10)으로부터 입사되는 빛을 확산 및 광경로 변경을 통하여 전면으로 조사되는 면광원으로 만드는 도광판(30)이 사용된다. 물론 상기 도광판(30) 상부에는 다양한 기능을 수행하는 광학 시트들이 더 사용될 수 있다. 1, the backlight unit 1 is provided with a light source 10 on its side surface, and diffuses light incident from the light source 10 into a planar light source A light guide plate 30 is used. Of course, optical sheets that perform various functions may be further used on the light guide plate 30.

이러한 도광판(30)은 다양한 패턴을 구비하여 측면에서 입사된 광을 전면 방향으로 변환하여 면광원으로 만드는 구조를 가지며, 일반적으로 사용되는 디스플레이 장치의 크기에 맞추어 다양한 크기로 제조된다. The light guide plate 30 has various patterns and has a structure that converts light incident from the side to a front direction to make a surface light source. The light guide plate 30 is manufactured in various sizes according to the size of a generally used display device.

따라서 최근에는 도 2에 도시된 바와 같이, 생산과정의 효율성을 위하여 도광판을 대면적의 도광판 원단(40)으로 제조한 후에, 절단선(42)을 따라 필요한 크기로 절단하여 사용하는 방법이 사용되고 있다. Recently, as shown in FIG. 2, a method has been used in which a light guide plate is manufactured as a light guide plate 40 having a large area for cutting efficiency, and then cut along a cut line 42 to a required size .

이때 상기 도광판 원단(40)을 필요한 크기로 절단하는 작업은 절단 칼날을 이용하여 절단하게 되며, 그 절단면은 매우 거친 상태를 가진다. 따라서 도광판의 측면 중 광이 입사되는 측면에 대해서는 별도의 가공작업을 통하여 광입사에 적합한 면을 가지도록 경면화 작업을 수행할 필요가 있다. At this time, the work of cutting the light guide plate 40 into a required size is cut using a cutting blade, and the cut surface has a very rough state. Therefore, it is necessary to perform a mirror-surface working so as to have a surface suitable for light incidence through a separate processing operation on the side of the light guide plate on which light is incident.

따라서 종래의 도광판 제조작업은 그 과정이 번거롭고 복잡하여 제조 단가가 높아지는 문제점이 있다. Therefore, the conventional light guide plate manufacturing process has a problem that the process is complicated and complicated and the manufacturing cost is increased.

본 발명이 해결하고자 하는 기술적 과제는 대면적으로 제조된 도광판 원판을 필요한 크기로 절단하여 도광판을 제조하는 경우에 정밀한 절단면 가공이 요구되는 광입사면에 대하여 이중 절단 작업을 진행하여 별도의 가공 작업없이 필요한 크기의 도광판을 제조할 수 있는 도광판 제조방법을 제공하는 것이다. DISCLOSURE OF INVENTION Technical Problem The present invention is directed to a method of manufacturing a light guide plate by cutting a large-sized light guide plate having a large area into a desired size by performing a double cutting operation on a light incident surface requiring a precise cut surface, And to provide a light guide plate manufacturing method capable of manufacturing a light guide plate of a required size.

전술한 기술적 과제를 해결하기 위한 본 발명에 따른 도광판 제조방법은, ) 도광판 원단을 제조하는 단계; 2) 상기 도광판 원단을 필요한 크기로 절단하되, 광입사면 형성 측은 여분을 포함한 상태로 예비 절단하여 예비 절단 도광판을 만드는 단계; 3) 예비 절단 도광판 중 광입사면 형성 측면에서 여분을 정밀 절단 칼날로 정밀 절단하여 도광판을 만드는 단계;를 포함한다. According to another aspect of the present invention, there is provided a method of manufacturing a light guide plate, including: fabricating a light guide plate fabric; 2) cutting the light guide plate into a required size, and preliminarily cutting the light incident surface forming side so as to include redundant parts, thereby forming a preliminary cutting light guide plate; 3) precisely cutting the extra light from the side of the light incidence plane forming side of the preliminary cutting light guide plate to a precise cutting blade to make a light guide plate.

그리고 본 발명에서 상기 정밀 절단 칼날은, 상기 광입사면 방향은 상기 도광판의 표면과 직각을 이루고, 상기 여분 방향은 경사각을 가지는 구조인 것이 바람직하다. In the present invention, it is preferable that the precision cutting blade has a structure in which the light incident surface direction is perpendicular to the surface of the light guide plate, and the extra direction has an inclination angle.

또한 본 발명에서 상기 경사각은 10 ~ 50 °인 것이 바람직하다.
In the present invention, the inclination angle is preferably 10 to 50 degrees.

본 발명의 도광판 제조방법에 의하면 도광판 원단에 대하여 단순한 절단 작업만을 수행하여 광입사면의 품질을 별도의 가공 작업 없이 높은 수준으로 유지할 수 있는 장점이 있다. According to the light guide plate manufacturing method of the present invention, only the cutting operation is performed on the light guiding plate fabric so that the quality of the light incident surface can be maintained at a high level without any additional processing work.

도 1은 일반적인 도광판 사용예를 도시하는 도면이다 .
도 2는 도광판 원단을 절단하는 예를 도시하는 도면이다.
도 3 내지 5는 본 발명의 일 실시예에 따른 도광판 제조방법의 과정을 도시하는 도면들이다.
도 6은 본 발명의 일 실시예에 따른 도광판 제조방법의 공정도이다. 1 is a view showing an example of using a general light guide plate.
2 is a diagram showing an example of cutting the light guide plate fabric.
3 to 5 are views showing a process of a method for manufacturing a light guide plate according to an embodiment of the present invention.
6 is a process diagram of a method of manufacturing a light guide plate according to an embodiment of the present invention.

이하에서는 첨부된 도면을 참조하여 본 발명의 구체적인 실시예를 상세하게 설명한다.
Hereinafter, a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.

본 실시예에 따른 도광판 제조방법은 도광판 원단을 제조하는 단계(S100)로 시작된다. 이 단계(S100)는 도 2에 도시된 바와 같이, 다양한 크기의 도광판으로 절단되어 사용될 수 있는 대면적 크기로 도광판 원단(40)을 제조하는 단계이다. 이때 도광판 원단(40)을 제조하는 구체적인 기술은 일반적으로 채용 가능한 다양한 기술이 채용 가능하며, 이에 대한 상세한 설명은 생략한다. The light guide plate manufacturing method according to this embodiment starts with step S100 of manufacturing the light guide plate fabric. In this step S100, as shown in FIG. 2, the light guide plate 40 is manufactured in a large-area size that can be cut and used with various sizes of light guide plates. At this time, various techniques which can be generally employed can be adopted as specific techniques for manufacturing the light guide plate fabric 40, and detailed description thereof will be omitted.

다음으로 도광판 원단(40)을 예비 절단하는 단계(S200)가 진행된다. 이 단계(S200)에서는 상기 도광판 원단(40)을 필요한 크기로 절단하되, 도 3에 도시된 바와 같이, 직사각형 형태의 예비 절단 도광판(50) 중에서 광입사면 형성 측은 여분(52)을 포함한 상태로 예비 절단하는 단계이다. Next, a step S200 of preliminarily cutting the light guide plate 40 is proceeded. In this step S200, the light guide plate 40 is cut to a required size. As shown in FIG. 3, the light incidence plane forming side of the rectangular prism-cutting light guide plate 50 is provided with a redundant portion 52 It is a preliminary cutting step.

다음으로는 예비 절단 도광판(50) 중에서 여분을 정밀 절단하는 단계(S300)가 진행된다. 이 단계(S300)에서는 도 5에 도시된 바와 같이, 예비 절단 도광판(50) 중 광입사면 형성 측면에서 여분(52)을 정밀 절단 칼날(60)로 정밀 절단하여 도광판(30)을 만드는 단계이다. 이 단계에서는 절단되는 측면이 경면 정도의 깨끗한 면을 가지도록 매우 정밀한 절단 작업이 요구되는데, 이를 위하여 본 실시예에서는 상기 정밀 절단 칼날(60)을 도 5에 도시된 바와 같이, 상기 광입사면 방향의 칼날면(62)은 상기 도광판(30)의 표면과 직각을 이루고, 상기 여분(52) 방향의 칼날면(64)은 경사각을 가지는 구조로 구성한다. Next, the precise cutting of the excess in the preliminary cutting light guide plate 50 (S300) proceeds. 5, in the step S300, the extra portion 52 is precisely cut from the side of the light incidence plane forming side of the preliminary cutting light guide plate 50 to the precise cutting blade 60 to make the light guide plate 30 . In this step, a very precise cutting operation is required so that the side to be cut has a clean surface of a mirror surface. For this purpose, in the present embodiment, the precision cutting blade 60 is rotated in the direction of the light incident surface And the blade surface 64 in the direction of the redundant portion 52 has an inclined angle with respect to the surface of the light guide plate 30.

이러한 구조를 가지는 정밀 절단 칼날(60)은 상기 도광판의 광입사면의 절단면이 도광판 표면과 정확하게 직각을 이루도록 하며, 절단면의 경면화를 가능하도록 한다. The precision cutter blade 60 having such a structure allows the cut surface of the light incident surface of the light guide plate to be precisely perpendicular to the surface of the light guide plate, and enables the cut surface to be mirror-finished.

이때 상기 정밀 절단 칼날(60) 중 여분측 칼날면(64)의 경사각(θ)은 10 ~ 50 °인 것이 바람직하다. 경사각이 10°미만인 경우에는 절단면의 절단 각도를 직각으로 유지하기 어려우며, 경사각이 50°를 초과하는 경우에는 절단에 너무 큰 힘이 필요한 문제점이 있다. At this time, the inclination angle? Of the extra-side blade surface 64 of the precise cutting blade 60 is preferably 10 to 50 degrees. When the inclination angle is less than 10 degrees, it is difficult to maintain the cutting angle at a right angle. When the inclination angle exceeds 50 degrees, a too large force is required for cutting.

이러한 과정을 거쳐서 도 4에 도시된 바와 같은 필요한 크기를 가지는 완성된 도광판(30)을 얻게 된다. Through this process, a completed light guide plate 30 having a required size as shown in FIG. 4 is obtained.

1 : 백라이트 유닛 10 : 광원
20 : 반사부 30 : 도광판
40 : 도광판 원단 50 : 예비 절단 도광판
60 : 정밀 절단 칼날1: backlight unit 10: light source
20: reflection part 30: light guide plate
40: light guiding plate fabric 50: preliminary cutting light guiding plate
60: Precision cutting blade

Claims (3)

1) 도광판 원단을 제조하는 단계;
2) 상기 도광판 원단을 필요한 크기로 절단하되, 광입사면 형성 측은 여분을 포함한 상태로 예비 절단하여 예비 절단 도광판을 만드는 단계;
3) 예비 절단 도광판 중 광입사면 형성 측면에서 여분을 정밀 절단 칼날로 정밀 절단하여 도광판을 만드는 단계;를 포함하며,
상기 정밀 절단 칼날은,
상기 광입사면 방향은 상기 도광판의 표면과 직각을 이루고, 상기 여분 방향은 경사각을 가지는 구조인 것을 특징으로 하는 도광판 제조방법.1) fabricating a light guide plate fabric;
2) cutting the light guide plate into a required size, and preliminarily cutting the light incident surface forming side so as to include redundant parts, thereby forming a preliminary cutting light guide plate;
3) precisely cutting the extra light from the side of the light incidence surface forming side of the preliminary cutting light guide plate to a precision cutting blade to make a light guide plate,
The precision cutter blade has:
Wherein the light incident surface direction is perpendicular to the surface of the light guide plate, and the extra direction has a tilt angle. 삭제delete 제1항에 있어서, 상기 경사각은,
10 ~ 50 °인 것을 특징으로 하는 도광판 제조방법.The method according to claim 1,
10 to 50 DEG.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002328237A (en) 2001-04-26 2002-11-15 Alps Electric Co Ltd Light transmission plate, and method of manufacturing light transmission plate as well as illuminator and liquid crystal display device
JP2009059545A (en) 2007-08-30 2009-03-19 Citizen Electronics Co Ltd Method of manufacturing light guide plate
JP2012161890A (en) 2011-02-08 2012-08-30 Toshiba Mach Co Ltd Method of cutting stacked sheet body

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10253831A (en) * 1997-03-06 1998-09-25 Nitto Denko Corp Light transmitting plate and manufacture therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002328237A (en) 2001-04-26 2002-11-15 Alps Electric Co Ltd Light transmission plate, and method of manufacturing light transmission plate as well as illuminator and liquid crystal display device
JP2009059545A (en) 2007-08-30 2009-03-19 Citizen Electronics Co Ltd Method of manufacturing light guide plate
JP2012161890A (en) 2011-02-08 2012-08-30 Toshiba Mach Co Ltd Method of cutting stacked sheet body

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