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KR100553155B1 - Optical film - Google Patents

Optical film Download PDF

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KR100553155B1
KR100553155B1 KR1020040040878A KR20040040878A KR100553155B1 KR 100553155 B1 KR100553155 B1 KR 100553155B1 KR 1020040040878 A KR1020040040878 A KR 1020040040878A KR 20040040878 A KR20040040878 A KR 20040040878A KR 100553155 B1 KR100553155 B1 KR 100553155B1
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optical
pattern
optical film
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KR20050115664A (en
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나우주
심용식
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주식회사 엘지에스
나우주
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Priority to KR1020040040878A priority Critical patent/KR100553155B1/en
Priority to PCT/KR2004/001923 priority patent/WO2005119351A1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/005—Arrays characterized by the distribution or form of lenses arranged along a single direction only, e.g. lenticular sheets
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)

Abstract

본 발명은, 광학필름에 관한 것으로서, 빛의 제어가 가능한 부분원호 형상의 광학적 단면을 가지며, 상호 등간격으로 선형 배열되는 다수의 제1광학패턴을 갖는 제1굴절부와; 부분원호 형상의 광학적 단면을 가지고 상호 등간으로 선형 배열되며, 상기 제1광학패턴의 길이방향에 대해 0°이상 180°이하의 교차각을 가지고 상기 제1광학패턴의 패턴면을 따라 형성되는 다수의 제2광학패턴을 갖는 제2굴절부를 포함하는 것을 특징으로 한다. The present invention relates to an optical film, comprising: a first refractive portion having a plurality of first optical patterns linearly spaced at equal intervals and having an optical cross section of a partial arc shape capable of controlling light; A plurality of circular arcs are arranged along the pattern plane of the first optical pattern having an optical cross-section and are linearly arranged to be equal to each other and having an intersection angle of 0 ° or more and 180 ° or less with respect to the longitudinal direction of the first optical pattern. And a second refractive portion having a second optical pattern.

이에 의하여, 넓은 시야각에서 고휘도를 발휘할 수 있고, 침윤 현상을 방지할 수 있으며, 생산성을 향상시킬 수 있는 광학필름이 제공된다. As a result, an optical film capable of exhibiting high brightness at a wide viewing angle, preventing infiltration, and improving productivity can be provided.

광학필름, 선형 배열, 광학패턴, 고휘도, 침윤 Optical film, linear array, optical pattern, high brightness, infiltration

Description

광학필름{Optical film}Optical film

도 1은 본 발명의 제1실시예에 따른 광학필름의 사시도, 1 is a perspective view of an optical film according to a first embodiment of the present invention;

도 2는 도 1의 광학필름 단면도, 2 is a cross-sectional view of the optical film of FIG.

도 3은 본 발명의 제2실시예에 따른 광학필름의 사시도, 3 is a perspective view of an optical film according to a second embodiment of the present invention;

도 4는 도 3의 광학필름 단면도, 4 is a cross-sectional view of the optical film of FIG.

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도 10은 광학필름이 설치되는 일반적인 백라이트 유닛의 구성도,10 is a configuration diagram of a general backlight unit in which an optical film is installed;

도 11은 종래 광학필름의 사시도, 11 is a perspective view of a conventional optical film,

도 12는 종래 또 다른 광학필름의 사시도.12 is a perspective view of another conventional optical film.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 광학필름 10 : 제1굴절부1: optical film 10: first refractive portion

11 : 제1광학렌즈패턴 20 : 제2굴절부11: first optical lens pattern 20: second refractive portion

21 : 제2광학패턴21: second optical pattern

본 발명은, 광학필름에 관한 것으로서, 보다 상세하게는 빛을 집광 굴절시키는 광학패턴의 구조가 개선된 광학필름에 관한 것이다. The present invention relates to an optical film, and more particularly, to an optical film having an improved structure of an optical pattern for focusing and refracting light.

TFT-LCD모니터나 휴대폰의 LCD 등의 디스플레이장치에 마련되는 백라이트유닛(100)에는 도 10에 도시된 바와 같이, 광원(105)으로부터 전달되는 빛을 집광 굴절시켜서 패널(107)로 입사함으로써 패널(107)에 화상이 표시되도록 하는 광학필름(101)을 포함하고 있다. As shown in FIG. 10, the backlight unit 100 provided in a display device such as a TFT-LCD monitor or an LCD of a mobile phone collects and refracts the light transmitted from the light source 105 to enter the panel 107. 107 includes an optical film 101 for displaying an image.

일반적인 백라이트유닛의 집광 굴절용 광학필름(101)은 도 11에 도시된 바와 같이, 삼각단면으로 형성된 다수의 프리즘패턴(111)이 선형 배열되어 있는 구조를 가지고 있는데, 이러한 종래의 프리즘패턴(111)의 광학필름(101)은 빛을 집광하여 굴절시키는 방향이 한정적이기 때문에, 패널(107)에 대한 시야각이 넓어질수록 휘도가 현저하게 떨어지는 단점이 있었다. As illustrated in FIG. 11, the optical film 101 for condensing and refraction of a general backlight unit has a structure in which a plurality of prism patterns 111 formed in a triangular cross section are linearly arranged. Since the optical film 101 has a limited direction in which light is collected and refracted, the brightness of the optical film 101 decreases significantly as the viewing angle with respect to the panel 107 increases.

이러한 단점을 해소하기 위해서, 도 12에 도시된 바와 같이, 삼각단면의 프리즘패턴(211a,211b)을 갖는 두 장의 광학필름(201a,201b)을 마련하고, 이들 광학필름(201a,201b)을 각 프리즘패턴(211a,211b)이 교차하도록 설치하는 공지기술이 개시된 바 있다. In order to solve this disadvantage, as shown in FIG. 12, two optical films 201a and 201b having prism patterns 211a and 211b of triangular cross sections are provided, and these optical films 201a and 201b are respectively provided. A known technique for installing the prism patterns 211a and 211b to intersect has been disclosed.

그러나, 프리즘패턴(211a,211b)이 교차되도록 두 장의 광학필름(201a,201b)을 설치하는 종래 기술에 있어서는, 빛을 집광하여 굴절시키는 방향이 확대되기 때 문에, 패널(107)에 대한 시야각이 넓어지더라도 어느 정도의 휘도 저하를 방지할 수는 있지만, 양 광학필름(201a,201b) 중 도면상에서 하부에 배치되는 광학필름(201a)의 프리즘패턴(211a) 최상단부와, 상부에 배치되는 광학필름(201b) 및 인접하는 타 필름과의 광학적 결합에 의해서 침윤(Wet-Out)현상이 발생한다. 이에 의해, 패널(107)에 표시되는 화상에서 모아레 무늬가 발생하는 심각한 문제점이 있었다. However, in the prior art in which two optical films 201a and 201b are provided so that the prism patterns 211a and 211b intersect, the viewing angle with respect to the panel 107 is increased because the direction of condensing and refracting light is enlarged. Although the brightness decreases to some extent can be prevented even if it is widened, the uppermost end of the prism pattern 211a of the optical film 201a, which is disposed on the lower portion of the two optical films 201a and 201b, and the upper portion of the prism pattern 211a, which are disposed above, Wet-out phenomenon occurs by optical coupling between the optical film 201b and another adjacent film. Thereby, there was a serious problem that moire fringes occurred in the image displayed on the panel 107.

또한, 프리즘패턴(211a,211b)이 교차되도록 두 장의 광학필름(201a,201b)을 설치하는 종래 기술에 있어서는, 빛을 집광하여 굴절시키는 방향이 확대되기는 하였으나, 이 역시 삼각프리즘패턴(211a,211b)의 구조상 빛의 굴절 방향이 한정적일 수밖에 없기 때문에, 현격한 휘도향상을 기대할 수 없는 문제점이 있었다. In addition, in the prior art in which two optical films 201a and 201b are provided such that the prism patterns 211a and 211b intersect, the direction in which light is collected and refracted is enlarged, but this is also the triangular prism patterns 211a and 211b. Since the refractive direction of the light inevitably has a limited structure, there is a problem in that a significant brightness improvement cannot be expected.

또한, 프리즘패턴(211a,211b)이 교차되도록 두 장의 광학필름(201a,201b)을 설치하는 종래 기술에 있어서는, 빛의 굴절 방향이 한정되어 빛의 산란 효과를 기대할 수 없기 때문에, 제조공정에서 양 광학필름(201a,201b) 사이에 미세한 먼지와 스크래치가 발생되더라도 이를 시각적으로 제거할 수가 없는 단점이 있다. 이에 의해, 불량률 상승과 작업의 어려움에 의해 생산성 저하를 초래하는 문제가 있었다. In addition, in the prior art in which two optical films 201a and 201b are provided such that the prism patterns 211a and 211b intersect, since the direction of refraction of light is limited and light scattering effects cannot be expected, Even if fine dust and scratches are generated between the optical films 201a and 201b, they cannot be visually removed. Thereby, there existed a problem which caused productivity fall by the failure rate increase and difficulty of work | work.

따라서, 본 발명의 목적은, 넓은 시야각에서 고휘도를 발휘할 수 있고, 침윤 현상을 방지할 수 있으며, 생산성을 향상시킬 수 있는 광학필름을 제공하는 것이다. Accordingly, an object of the present invention is to provide an optical film capable of exhibiting high brightness at a wide viewing angle, preventing infiltration, and improving productivity.

상기 목적은, 본 발명에 따라, 광학필름에 있어서, 빛의 제어가 가능한 부분원호 형상의 광학적 단면을 가지며, 상호 등간격으로 선형 배열되는 다수의 제1광학패턴을 갖는 제1굴절부와; 삼각 형상의 광학적 단면을 가지고 상호 등간으로 선형 배열되며, 상기 제1광학패턴의 길이방향에 대해 0°이상 180°이하의 교차각을 가지고 상기 제1광학패턴의 패턴면을 따라 형성되는 다수의 제2광학패턴을 갖는 제2굴절부를 포함하는 것을 특징으로 하는 광학필름에 의해서 달성된다.
이하에서는 첨부된 도면을 참고하여 본 발명을 상세하게 설명한다. In accordance with the present invention, there is provided an optical film, comprising: a first refractive portion having a plurality of first optical patterns linearly arranged at equal intervals and having an optical cross section of a partial arc shape capable of controlling light; A plurality of agents are arranged along the pattern surface of the first optical pattern having a triangular optical cross-section and linearly aligned with each other, and having an intersection angle of 0 ° or more and 180 ° or less with respect to the longitudinal direction of the first optical pattern. It is achieved by an optical film comprising a second refractive portion having a two optical pattern.
Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

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도 1은 본 발명의 제1실시예에 따른 광학필름의 사시도이고, 도 2는 도 1의 광학필름 단면도이다. 이들 도면에 도시된 바와 같이, 본 발명에 따른 광학필름(1)은 광원(105)으로부터 입사된 빛을 집광시키는 제1광학패턴(11)을 갖는 제1굴절부(10)와, 제1굴절부(10)에서 집광된 빛을 거의 수직방향으로 굴절시켜 패널(107)로 전달하는 제2광학패턴(21)을 갖는 제2굴절부(20)를 포함한다. 1 is a perspective view of an optical film according to a first embodiment of the present invention, Figure 2 is a cross-sectional view of the optical film of FIG. As shown in these figures, the optical film 1 according to the present invention includes a first refractive portion 10 having a first optical pattern 11 for condensing light incident from the light source 105 and a first refractive index. It includes a second refractive portion 20 having a second optical pattern 21 for refracting the light collected in the unit 10 in a substantially vertical direction to the panel 107.

제1굴절부(10)의 제1광학패턴(11)은 도 1 및 도 2에 각각 도시된 바와 같이, 평면 투영시 상호 소정의 간격을 두고 다수의 패턴이 선형 배열되어 있으며, 각각의 단면 투영시에는 부분 원호 형상으로 상향 돌출된 형상의 광학적 단면을 가지고 있다. 이들 제1광학패턴(11)들은 도면에 화살표로 표시된 바와 같이, 광원(105)으로부터 전달되는 빛을 집광 굴절시켜 원호면으로 형성되는 패턴면을 통해 제2광학패턴(21)으로 전달한다. 이때, 제1광학렌즈패턴(11)에 의한 빛의 집광 굴절 제어는 광학필름(1)의 제작시 제1광학렌즈패턴(11)들의 크기과 구조 및 간격등을 조절함으로써 가능하다. As shown in FIGS. 1 and 2, the first optical pattern 11 of the first refraction portion 10 has a plurality of patterns linearly arranged at a predetermined distance from each other in planar projection. The poem has an optical cross section that protrudes upward in a partial arc shape. These first optical patterns 11, as indicated by the arrows in the figure, by condensing the light transmitted from the light source 105 to transmit to the second optical pattern 21 through a pattern surface formed of an arc surface. In this case, the light condensation refraction control of the light by the first optical lens pattern 11 is possible by adjusting the size, structure, and spacing of the first optical lens pattern 11 when the optical film 1 is manufactured.

제2굴절부(20)의 제2광학패턴(21)들은 단면 투영시 삼각형상의 광학적 단면 을 가지고 있으며, 평면 투영시 제1광학패턴(11)의 길이방향에 대해 교차하는 방향으로 상호 소정의 간격을 두고 다수의 패턴이 선형 배열되어 있다. 이때, 제2광학패턴(21)들은 제1굴절부(10)의 상부면에 접하는 상태에서 제1광학패턴(11)의 패턴면을 따라 형성됨으로써, 제2광학패턴(21)들은 제1광학패턴(11)의 패턴면에 접하여 굴곡된 형태를 갖게 된다. The second optical patterns 21 of the second refraction portions 20 have a triangular optical cross section in the projection of the cross section, and have a predetermined distance from each other in the direction crossing the longitudinal direction of the first optical pattern 11 in the plane projection. Many patterns are arranged linearly. In this case, the second optical patterns 21 are formed along the pattern surface of the first optical pattern 11 in a state of being in contact with the upper surface of the first refraction portion 10, whereby the second optical patterns 21 are formed of the first optical. The pattern 11 of the pattern 11 is in contact with the curved surface.

이러한 구조는 제1광학패턴(11)과 제2광학패턴(21) 간의 광학적 결합을 최소화하여 인간이 육안으로 확인 할 수 있는 침윤(Wet-Out)현상의 관찰을 어렵게 한다. 또한, 제2광학패턴(21)은 제1광학패턴(11)과 교차되는 형태로 형성됨으로써, 광원(105)으로부터 전달되는 빛이 제1광학패턴(11)과 제2광학패턴(21)에서 굴절 방향이 확대된다. 특히, 빛의 굴절 방향은 제1굴절면을 따라 굴곡된 제2광학패턴(21)의 굴곡면과 광학적 단면 형태에 의해 더욱 확대되기 때문에, 넓은 영역에서 고휘도의 성능을 발휘할 수 있다. 이때, 제1광학패턴(11)과 상기 제2광학패턴(21)의 상호 교차각은 필요에 따라서 0°이상 °180이하 범위 내에서 조절될 수 있다. This structure minimizes the optical coupling between the first optical pattern 11 and the second optical pattern 21, making it difficult for the human to observe the wet-out phenomenon. In addition, since the second optical pattern 21 is formed to intersect the first optical pattern 11, light transmitted from the light source 105 is transmitted from the first optical pattern 11 and the second optical pattern 21. The refraction direction is enlarged. In particular, since the direction of refraction of light is further enlarged by the curved surface and the optical cross-sectional shape of the second optical pattern 21 curved along the first refractive surface, high brightness performance can be exhibited in a wide area. In this case, the mutual crossing angle of the first optical pattern 11 and the second optical pattern 21 may be adjusted within a range of 0 ° or more and 180 ° or less, as necessary.

여기서, 이들 제1굴절부(10)와 제2굴절부(20)는 가시광역에서 빛을 원활하게 투과할 수 있는 광투과성 재료로서 폴리카보네이트, PVC, PP, PE, PET, 아크릴계 폴리머 중 어느 하나를 이용하여 상호 일체를 이루는 단일층으로 성형하는 것이 바람직하다. 물론, 여건에 따라서 제1굴절부(10)와 제2굴절부(20)를 전술한 재료 중 동일한 재료 또는 상이한 재료를 이용하여 각각 성형한 후 상호 접하도록 결합되는 다층구조로 제작할 수도 있다. Here, the first refractive portion 10 and the second refractive portion 20 is a light transmissive material that can transmit light smoothly in the visible region, any one of polycarbonate, PVC, PP, PE, PET, and acrylic polymer. It is preferable to mold to a single layer which is integrated with each other using. Of course, depending on the conditions, the first refraction portion 10 and the second refraction portion 20 may be manufactured in a multi-layer structure in which the first refraction portion 10 and the second refraction portion 20 are molded using the same material or different materials, and then bonded to each other.

한편, 본 발명에 따른 광학필름(1)은 도 3과 도 4에 도시된 바와 같이, 제1광학패턴(11)이 부분 원호 상으로 하향 함몰된 형상의 광학적 단면으로 형성되고, 제2광학패턴(21)은 삼각형상의 광학적 단면을 가지고 평면 투영시 제1광학패턴(11)의 길이방향에 대해 교차하는 방향으로 함몰된 제1광학패턴(11)의 패턴면을 따라 굴곡지게 상호 소정의 간격을 두고 선형 배열되도록 성형될 수 있다. Meanwhile, in the optical film 1 according to the present invention, as shown in FIGS. 3 and 4, the first optical pattern 11 is formed in an optical cross section in which the first optical pattern 11 is recessed downward on the partial arc, and the second optical pattern Denoted at 21 are bent along the pattern plane of the first optical pattern 11 recessed in a direction intersecting the longitudinal direction of the first optical pattern 11 in a planar projection with a triangular optical cross section. And can be shaped to be linearly aligned.

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이러한 구조를 갖는 본 발명에 따른 광학필름(1)은 광원(105)으로부터 전달되는 빛이 제1광학패턴(11)의 패턴면에서 집광된 다음 패턴면의 각도에 따라 제2굴절부(20)를 향해 굴절된 다음, 제2광학패턴(21)에서 제1광학패턴(11)의 굴절 방향에 교차하는 방향으로 수직굴절되어 패널(107)로 입사됨으로써, 패널(107)의 전 영역에서 휘도를 증가시키게 된다. 따라서, 넓은 시야각에서도 고휘도를 발휘할 수 있다. In the optical film 1 according to the present invention having such a structure, the light transmitted from the light source 105 is focused on the pattern surface of the first optical pattern 11 and then the second refractive portion 20 according to the angle of the pattern surface. After refracting toward, the second optical pattern 21 is vertically refracted in the direction intersecting the refraction direction of the first optical pattern 11 to be incident on the panel 107, thereby increasing luminance in all areas of the panel 107. Is increased. Therefore, high brightness can be exhibited even at a wide viewing angle.

그리고, 제2광학패턴(21)이 제1광학패턴(11)의 패턴면을 따라 형성되어 굴곡된 피크를 갖는 구조를 이루고 있기 때문에, 인접한 필름과의 광학적 결합을 최소한으로 줄일 수 있다. 이에 의해, 인간의 육안으로 침윤(Wet-Out)현상을 관찰 할 수 없게 되어 모아레 무늬가 발생하지 않는다. In addition, since the second optical pattern 21 is formed along the pattern surface of the first optical pattern 11 to form a structure having curved peaks, optical coupling with adjacent films can be minimized. As a result, the wet-out phenomenon cannot be observed by the human eye, and moiré patterns do not occur.

또한, 제1광학패턴(11)과 제2광학패턴(21) 간의 굴곡진 패턴면에서 빛의 산란 작용이 발생함으로써, 광학필름(1)에 미세한 먼지와 스크래치가 발생되더라도 이를 시각적으로 관찰할 수 없게 된다. 따라서, 불량률 저하와 작업성 향상에 의해 광학필름(1)의 생산성이 향상된다. In addition, the light scattering action occurs in the curved pattern surface between the first optical pattern 11 and the second optical pattern 21, even if fine dust and scratches are generated in the optical film 1, it can be visually observed. There will be no. Therefore, productivity of the optical film 1 improves by defect rate fall and workability improvement.

이와 같이, 빛의 제어가 가능한 광학적 단면을 가지고 선형 배열된 제1광학패턴의 패턴면을 따라 다수의 제2광학패턴이 선형 배열된 광학필름을 마련함으로써, 넓은 시야각에서 고휘도를 발휘할 수 있고, 침윤 현상을 방지하여 모아레를 제거할 수 있으며, 생산성을 향상시킬 수 있는 광학필름이 제공된다. As such, by providing an optical film in which a plurality of second optical patterns are linearly arranged along a pattern surface of a first optical pattern linearly arranged with an optical cross section capable of controlling light, high brightness can be exerted at a wide viewing angle and infiltration. Moiré can be removed by preventing the phenomenon, and an optical film is provided which can improve productivity.

이상 설명한 바와 같이, 본 발명에 따르면, 넓은 시야각에서 고휘도를 발휘할 수 있고, 침윤 현상을 방지할 수 있으며, 생산성을 향상시킬 수 있는 광학필름이 제공된다. As described above, according to the present invention, an optical film capable of exhibiting high brightness at a wide viewing angle, preventing infiltration, and improving productivity is provided.

Claims (8)

삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 광학필름에 있어서, In the optical film, 빛의 제어가 가능한 부분원호 형상의 광학적 단면을 가지며, 상호 등간격으로 선형 배열되는 다수의 제1광학패턴을 갖는 제1굴절부와; A first refraction portion having an optical cross section of a partial arc shape capable of controlling light and having a plurality of first optical patterns linearly arranged at equal intervals; 삼각 형상의 광학적 단면을 가지고 상호 등간으로 선형 배열되며, 상기 제1광학패턴의 길이방향에 대해 0°이상 180°이하의 교차각을 가지고 상기 제1광학패턴의 패턴면을 따라 형성되는 다수의 제2광학패턴을 갖는 제2굴절부를 포함하는 것을 특징으로 하는 광학필름.A plurality of agents are arranged along the pattern surface of the first optical pattern having a triangular optical cross-section and linearly aligned with each other, and having an intersection angle of 0 ° or more and 180 ° or less with respect to the longitudinal direction of the first optical pattern. An optical film comprising a second refractive portion having a two optical pattern. 삭제delete 삭제delete
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