KR100907703B1 - Prism sheet - Google Patents

Prism sheet Download PDF

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Publication number
KR100907703B1
KR100907703B1 KR1020070107877A KR20070107877A KR100907703B1 KR 100907703 B1 KR100907703 B1 KR 100907703B1 KR 1020070107877 A KR1020070107877 A KR 1020070107877A KR 20070107877 A KR20070107877 A KR 20070107877A KR 100907703 B1 KR100907703 B1 KR 100907703B1
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South Korea
Prior art keywords
prism
prism sheet
transparent substrate
present
pattern
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KR1020070107877A
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Korean (ko)
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KR20090042023A (en
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정영선
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주식회사 피제이엘씨디
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Priority to KR1020070107877A priority Critical patent/KR100907703B1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/60—Systems using moiré fringes
    • 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
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Abstract

본 발명은 프리즘시트에 관한 것으로, 보다 상세하게는 침윤현상 및 모아레 현상을 방지함과 더불어 휘도를 향상시킬 수 있는 프리즘시트에 관한 것이다. The present invention relates to a prism sheet, and more particularly, to a prism sheet that can improve brightness while preventing infiltration and moiré.

본 발명에 의한 프리즘 시트는, 투명기판; 상기 투명기판의 일면에 적층된 복수의 제1프리즘패턴; 및 상기 복수의 제1프리즘패턴의 양측에 배치된 복수의 제2프리즘패턴을 포함하고, 상기 제2프리즘패턴의 피크는 상기 제1프리즘패턴의 피크 보다 낮은 위치에 있는 것을 특징으로 한다. Prism sheet according to the present invention, a transparent substrate; A plurality of first prism patterns stacked on one surface of the transparent substrate; And a plurality of second prism patterns disposed on both sides of the plurality of first prism patterns, wherein the peaks of the second prism patterns are positioned at lower positions than the peaks of the first prism patterns.

프리즘시트, 투명기판, 패턴, 휘도, 침윤, 모아레 Prism sheet, transparent substrate, pattern, brightness, infiltration, moire

Description

프리즘 시트{PRISM SHEET}Prism Sheet {PRISM SHEET}

본 발명은 프리즘시트에 관한 것으로, 보다 상세하게는 침윤현상 및 모아레 현상을 방지함과 더불어 휘도를 향상시킬 수 있는 프리즘시트에 관한 것이다. The present invention relates to a prism sheet, and more particularly, to a prism sheet that can improve brightness while preventing infiltration and moiré.

백라이트 디스플레이는 백라이트와 액정패널 사이에 프리즘시트 등을 개재하고, 이 프리즘 시트는 백라이트의 빛을 집광 및 굴절시켜 액정패널측으로 보냄으로써 액정패널에 화상을 표시한다. 이러한 프리즘 시트는 삼각형 단면으로 형성된 다수의 프리즘패턴이 선형으로 배열된 구조로 이루어진다. 하지만, 이러한 단일의 프리즘 시트는 액정패널에 대한 시야각이 커질수록 그 휘도가 현저하게 떨어지는 단점이 있었다.A backlight display interposes a prism sheet or the like between the backlight and the liquid crystal panel, and the prism sheet displays an image on the liquid crystal panel by condensing and refracting light of the backlight to the liquid crystal panel side. The prism sheet has a structure in which a plurality of prism patterns formed in a triangular cross section are linearly arranged. However, such a single prism sheet has a disadvantage in that its brightness is remarkably decreased as the viewing angle of the liquid crystal panel increases.

최근에는 고휘도의 선명한 화상을 얻기 위하여 각 프리즘패턴이 상호 교차되도록 2개의 프리즘 시트를 적층한 구조(이하, '교차적층형 프리즘 시트'라 함)가 개시되어 있다. Recently, a structure in which two prism sheets are stacked so as to cross each prism pattern in order to obtain a clear image of high brightness (hereinafter referred to as a "cross-layered prism sheet") has been disclosed.

이러한 종래의 교차적층형 프리즘 시트는 액정패널에 대한 시야각이 커지더라도 어느 정도의 휘도 저하를 방지할 수 있는 장점이 있지만, 일측 시트의 프리즘패턴과 타측 시트의 평탄 표면이 광학적으로 결합되는 부분에서 "침윤현상(wet- out)"이 발생한다. 이러한 광학결합은 그 프리즘패턴의 피크(peak)들을 따라 발생하는 완전 내부반사를 방해하고, 액정패널의 모아레 현상을 초래하는 단점이 있었다. Such a conventional laminated laminated prism sheet has an advantage of preventing a certain degree of luminance deterioration even when the viewing angle with respect to the liquid crystal panel is increased. However, in the portion where the prism pattern of one sheet and the flat surface of the other sheet are optically coupled, "Wet-out" occurs. Such optical coupling has the disadvantage of preventing the complete internal reflection occurring along the peaks of the prism pattern and causing the moiré phenomenon of the liquid crystal panel.

또한, 종래의 교차적층형 프리즘 시트는 일률적인 삼각형 단면 구조에 의해 광의 굴절방향이 한정적일 수 밖에 없기 때문에, 현격한 휘도향상을 기대할 수 없는 단점이 있었다. In addition, the conventional cross-laminated prism sheet has a disadvantage in that it is not possible to expect a significant brightness improvement since the direction of refraction of light is limited by the uniform triangular cross-sectional structure.

따라서, 본 발명은 상기와 같은 점을 감안하여 안출된 것으로, 침윤현상 및 모아레 현상을 미연에 차단 내지는 최소화함과 더불어 디스플레이의 휘도를 보다 향상시킬 수 있는 프리즘 시트를 제공하는 데 그 목적이 있다. Accordingly, the present invention has been made in view of the above, and an object thereof is to provide a prism sheet capable of further preventing or minimizing infiltration and moire phenomena and further improving the brightness of a display.

상기와 같은 목적을 달성하기 위한 본 발명의 프리즘 시트는, Prism sheet of the present invention for achieving the above object,

투명기판;Transparent substrate;

상기 투명기판의 일면에 적층된 복수의 제1프리즘패턴; 및A plurality of first prism patterns stacked on one surface of the transparent substrate; And

상기 복수의 제1프리즘패턴의 양측에 배치된 복수의 제2프리즘패턴을 포함하고, A plurality of second prism patterns disposed on both sides of the plurality of first prism patterns;

상기 제2프리즘패턴의 피크는 상기 제1프리즘패턴의 피크 보다 낮은 위치에 있는 것을 특징으로 한다. The peak of the second prism pattern is lower than the peak of the first prism pattern.

상기 투명기판은 그 내부에 다수의 광확산물질이 함유되어 있는 것을 특징으로 한다. The transparent substrate is characterized in that it contains a plurality of light diffusion material therein.

상기 광확산물질은 비드 및 마이크로로드 중에서 어느 하나의 형태로 이루어진 것을 특징으로 한다. The light diffusing material is characterized in that formed of any one of beads and microrods.

이상과 같은 본 발명은, 디스플레이의 휘도를 대폭 향상시킴과 더불어 침윤현상 내지 모아레 현상을 미연에 차단할 수 있는 장점이 있다. The present invention as described above has the advantage of significantly improving the brightness of the display, and can block the infiltration phenomenon and the moiré phenomenon in advance.

또한, 본 발명은 빛의 확산성 및 산란성을 더욱 향상시킬 수 있다.In addition, the present invention can further improve the diffusibility and scattering properties of light.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 내지 도 2는 본 발명의 일 실시예에 따른 프리즘시트를 도시한다. 1 to 2 show a prism sheet according to an embodiment of the present invention.

도시된 바와 같이, 본 발명의 프리즘 시트(100)는 투명기판(10), 및 이 투명기판(10)의 일면에 적층된 복수의 제1프리즘패턴(11), 및 상기 복수의 제1프리즘패턴(11) 양측에 배치된 제2프리즘패턴(12)을 포함한다.
특히, 상기 제1프리즘패턴(11)과 제2프리즘패턴(12)은 그 단면이 '

Figure 112008072809817-pat00005
'형상으로 반복 형성되는 구조를 가진다.As illustrated, the prism sheet 100 of the present invention includes a transparent substrate 10, a plurality of first prism patterns 11 stacked on one surface of the transparent substrate 10, and the plurality of first prism patterns. (11) a second prism pattern 12 disposed on both sides thereof.
In particular, the first prism pattern 11 and the second prism pattern 12 has a cross section of '
Figure 112008072809817-pat00005
'Has a structure that is repeatedly formed in the shape.

투명기판(10)은 폴리에스테르, 폴리카보네이트, 폴리메틸메타클리렐이트, 폴리스틸렌, 폴리에틸렌 테레프탈레이트 등과 같이 광투과율이 85~95%(보다 바람직하게는 90~94%)이 높은 고투명성 수지로 이루어지고, 이 투명기판(10) 내에는 다수의 글래스비드(glass bead, 도 2참조) 또는 마이크로로드(micro rod, 도 3 참조) 등과 같은 광확산물질(15)이 함유되고, 이 광확산물질(15)은 광원에서 유입된 광을 보다 폭넓게 확산시켜 액정패널(미도시)측으로 균일하게 빛을 출사시킨다. The transparent substrate 10 is made of a highly transparent resin having a high light transmittance of 85 to 95% (more preferably 90 to 94%), such as polyester, polycarbonate, polymethylmethacrylate, polystyrene, polyethylene terephthalate, and the like. The transparent substrate 10 includes a light diffusing material 15 such as a plurality of glass beads (see FIG. 2) or a micro rod (see FIG. 3). Numeral 15 diffuses the light introduced from the light source more widely to emit light uniformly toward the liquid crystal panel (not shown).

제1프리즘패턴(11)은 투명기판(10)의 일면에 자외선 경화수지 등에 의해 형성될 수 있고, 이 제1프리즘패턴(11)은 삼각형 단면으로 이루어지고, 이 삼각형 단면은 피크(peak, 11a), 피크각(a1) 및 좌우 저각(a2, a3)을 가지며, 피크각(a1) 및 좌우 저각(a2, a3)은 다양한 각도로 설정될 수 있으며, 또한 피크(11a)와 피크(11a) 사이의 피치(a4, pitch) 또한 다양한 길이로 설정될 수 있다. The first prism pattern 11 may be formed on one surface of the transparent substrate 10 by an ultraviolet curable resin. The first prism pattern 11 may have a triangular cross section, and the triangular cross section may have a peak 11a. ), The peak angle a1 and the left and right bottom angles a2 and a3, and the peak angle a1 and the left and right bottom angles a2 and a3 can be set at various angles, and also the peak 11a and the peak 11a. The pitch (a4, pitch) between can also be set to various lengths.

제2프리즘패턴(12)은 제1프리즘패턴(11)의 좌우 양측에 배치되고, 제2프리즘 패턴(12)은 제1프리즘패턴(11)의 좌우 양측에 자외선 경화수지 등에 의해 일체로 형성될 수 있다. 제2프리즘패턴(12)은 삼각형 단면으로 이루어지고, 이 삼각형 단면은 피크(12a), 피크각(b1) 및 좌우 저각(b2, b3)을 가지며, 피크각(b1) 및 좌우 저각(b2, b3)은 다양한 각도로 설정되고, 또한 피크(12a)와 피크(12a) 사이의 피치(b4) 또한 다양한 길이로 설정될 수 있다. The second prism pattern 12 may be disposed on both left and right sides of the first prism pattern 11, and the second prism pattern 12 may be integrally formed on the left and right sides of the first prism pattern 11 by an ultraviolet curable resin or the like. Can be. The second prism pattern 12 has a triangular cross section, which has a peak 12a, a peak angle b1 and left and right bottom angles b2 and b3, and has a peak angle b1 and left and right bottom angles b2, b3) is set at various angles, and the pitch b4 between the peak 12a and the peak 12a may also be set to various lengths.

제2프리즘패턴(12)의 피크(12a)는 제1프리즘패턴(11)의 피크(11a) 보다 낮은 높이에 위치한 구조로 이루어진다. 이러한 구조에 의해, 제1 및 제2 프리즘패턴(11, 12) 각각이 대부분의 빛을 굴절시켜 출사시킬 수 있고, 일부의 빛은 광원(미도시) 또는 반사판(미도시)측으로 반사시켜 재활용할 수 있으며, 제1 및 제2 프리즘패턴(11, 12) 사이에서 제1프리즘패턴(11)에서 출사된 광의 일부가 제2프리즘패턴(12)으로 입사된 후에 굴절되어 출사될 수 있고, 제2프리즘패턴(12)에서 출사된 광의 일부가 제1프리즘패턴(11)으로 입사된 후에 굴절되어 출사된다. 이에 의해, 광의 굴절방향이 종래기술에 비해 보다 광범위해지고, 이러한 제1 및 제2 프리즘패턴(11, 12)의 복합적이고 광범위한 굴절작용에 의해 디스플레이의 휘도가 현격히 증가될 수 있다.The peak 12a of the second prism pattern 12 has a structure located at a height lower than the peak 11a of the first prism pattern 11. With this structure, each of the first and second prism patterns 11 and 12 can be refracted and emitted most of the light, and some of the light is reflected by the light source (not shown) or the reflector (not shown) to be recycled. Some of the light emitted from the first prism pattern 11 between the first and second prism patterns 11 and 12 may be refracted and emitted after being incident on the second prism pattern 12. A part of the light emitted from the prism pattern 12 is incident on the first prism pattern 11 and then refracted and emitted. Thereby, the direction of refraction of the light becomes more wider than in the prior art, and the brightness of the display can be significantly increased by the complex and extensive refraction of the first and second prism patterns 11 and 12.

또한, 제1 및 제2 프리즘패턴(11, 12) 및 투명기재(10)의 광확산물질(15) 등에 의해 빛의 산란성을 향상시킴으로써, 프리즘 시트(100)에 미세한 먼지 또는 스크래치가 발생하더라도 이를 육안적으로 쉽게 식별할 수 없고, 이에 따라 불량율 을 감소시킬 뿐만 아니라 생산성을 대폭 향상시킬 수 있다. In addition, the light scattering property is improved by the light diffusing material 15 of the first and second prism patterns 11 and 12 and the transparent substrate 10, so that even if fine dust or scratches are generated in the prism sheet 100, It is not easy to identify with the naked eye, and thus can not only reduce the defective rate but also greatly improve the productivity.

이러한 본 발명은 광원의 빛이 투명기재(10)로 입사되면, 빛은 광확산물 질(15)에 의해 광범위하게 확산 내지 산란되어 출사되고, 이 출사된 빛은 제1 및 제2 프리즘패턴(11, 12)의 복합적이고 광범위한 굴절작용에 의해 굴절된 후에 액정패널측으로 전달됨으로써 현격한 휘도의 향상을 기대할 수 있다. According to the present invention, when the light of the light source is incident on the transparent substrate 10, the light is diffused or scattered widely by the light diffusion material 15, and the emitted light is emitted from the first and second prism patterns ( By refraction by the complex and extensive refraction of 11, 12) and being transferred to the liquid crystal panel side, a dramatic improvement in brightness can be expected.

이러한 본 발명은 투명기재(10)의 확산성 향상 및 제1 및 제2 프리즘패턴(11, 12)의 굴절성 향상 구조로 인해 종래와 같이 그 휘도 향상을 위해 2개의 프리즘시트를 교차시켜 배열한 교차형 프리즘시트를 구현할 필요가 없고, 이에 의해 광학적 결합이 발생되지 않으므로 침윤현상 내지 모아레 현상이 미연에 차단될 수 있다. The present invention is arranged by crossing the two prism sheets to improve the brightness of the transparent substrate 10 and improve the brightness of the first and second prism patterns (11, 12) due to the structure improved There is no need to implement a cross prism sheet, whereby optical coupling does not occur, so infiltration or moiré may be blocked beforehand.

이와 달리, 본 발명의 프리즘시트(100)의 상면 또는 하면에 종래의 프리즘시트를 적층하거나 종래와 유사하게 본 발명의 프리즘시트(100) 2개를 그 프리즘패턴(11, 12)들을 상호 교차하도록 적층할 수도 있고, 이렇게 적층된 구조일지라도 각 피크(11a, 12a)의 높이가 서로 상이한 구조로 인해 그 광학적 결합이 최소화됨으로써 침윤현상 내지 모아레 현상을 대폭 감소시킬 수 있는 장점이 있다. On the other hand, the conventional prism sheet 100 is laminated on the upper or lower surface of the prism sheet 100 of the present invention, or similarly, the two prism sheets 100 of the present invention intersect the prism patterns 11 and 12 with each other. In the stacked structure, the optical coupling is minimized due to the structure in which the heights of the peaks 11a and 12a are different from each other, thereby greatly reducing the infiltration phenomenon and the moiré phenomenon.

(실험예1)Experimental Example 1

아래의 표 1은 종래예와 본 발명에 의한 프리즘 시트에 각각 나타나는 휘도를 비교 측정한 결과표이고, 도 4는 종래예와 본 발명에 의한 프리즘 시트 각각에서 나타나는 휘도를 비교 측정한 결과그래프이다. Table 1 below is a result of comparing and measuring the luminance shown in each of the prism sheet according to the conventional example and the present invention, Figure 4 is a graph of the result of comparing and measuring the luminance appearing in each of the prism sheet according to the conventional example and the present invention.

종래예는 2개의 프리즘 시트를 상호 직교하는 방향으로 배열한 교차형 프리즘 시트로서, 이 종래예와 본 발명 각각은 3개의 샘플을 비교 측정하였으며, 그 액정패널 위에 9개의 지점에서 각각 측정한 휘도의 최소값, 최대값, 평균치 등을 나 타내었다. The prior art example is a cross prism sheet in which two prism sheets are arranged in a direction orthogonal to each other. The prior art example and the present invention each compared three samples, and measured luminance at nine points on the liquid crystal panel. The minimum, maximum, and average values are shown.

(표 1)Table 1

종래예Conventional example 본 발명The present invention 샘플  Sample 샘플 1 Sample 1 샘플 2 Sample 2 샘플 3 Sample 3 샘플 1 Sample 1 샘플2 Sample 2 샘플3 Sample 3 제1지점 First point 3240 3240 3306 3306 3330 3330 3466 3466 3537 3537 3563 3563 제2지점 2nd branch 3170 3170 313 313 3219 3219 3392 3392 3544 3544 3437 3437 제3지점 Third point 3214 3214 3369 3369 3286 3286 3442 3442 3601 3601 3519 3519 제4지점 4th branch 3123 3123 3218 3218 3216 3216 3335 3335 3443 3443 3441 3441 제5지점 Point 5 3123 3123 3250 3250 3255 3255 3348 3348 3476 3476 3486 3486 제6지점 6th branch 3034 3034 3200 3200 3199 3199 3246 3246 3424 3424 3419 3419 제7지점 Branch 7 3340 3340 3406 3406 3481 3481 3577 3577 3644 3644 3725 3725 제8지점 Branch 8 3170 3170 3248 3248 3207 3207 3391 3391 3476 3476 3432 3432 제9지점 Branch 9 3204 3204 3391 3391 3473 3473 3430 3430 3637 3637 3712 3712 최소값 Minimum value 3034.21 3034.21 3199.84 3199.84 3198.61 3198.61 3257.45 3257.45 3383.01 3383.01 3378.61 3378.61 최대값 Value 3339.91 3339.91 3405.85 3405.85 3481.12 3481.12 3548.76 3548.76 3679.64 3679.64 3673.38 3673.38 평균치 Average 3179.87 3179.87 3300.12 3300.12 3296.07 3296.07 3403.11 3403.11 3531.33 3531.33 3526 3526 균등율(%) Uniformity rate (%) 90.85 90.85 93.95 93.95 91.88 91.88 97.02 97.02 100.95 100.95 98.85 98.85

다음의 표 2는 종래예와 본 발명의 각 샘플의 평균치를 평균한 값을 비교한 표이다. Table 2 below is a table comparing the average value of the average values of each sample of the prior art and the present invention.

(표 2)Table 2

종래예Conventional example 본 발명The present invention 평균치Average 32583258 34863486

이로부터 알 수 있듯이, 본 발명은 종래예와 비교하여 그 휘도가 6.99% 이상 더 향상됨을 알 수 있었다. As can be seen from the above, the present invention was found that the luminance is further improved by 6.99% or more compared with the conventional example.

도 1은 본 발명의 일 실시예에 따른 프리즘시트를 도시한 사시도, 1 is a perspective view showing a prism sheet according to an embodiment of the present invention,

도 2는 본 발명의 일 실시예에 따른 프리즘시트를 도시한 단면도, 2 is a cross-sectional view showing a prism sheet according to an embodiment of the present invention;

도 3은 본 발명의 다른 실시예에 따른 프리즘시트를 도시한 단면도,3 is a cross-sectional view showing a prism sheet according to another embodiment of the present invention;

도 4는 종래예와 본 발명에 의한 프리즘 시트 각각에서 나타나는 휘도를 비교 측정한 결과그래프이다. 4 is a graph showing a result of comparing and measuring the luminance shown in each of the prism sheet according to the conventional example and the present invention.

* 도면의 주요 부분에 대한 부호의 간단한 설명 *Brief description of symbols for the main parts of the drawings

10: 투명기판 11: 제1프리즘패턴10: transparent substrate 11: the first prism pattern

12: 제2프리즘패턴 100: 프리즘시트12: second prism pattern 100: prism sheet

Claims (3)

투명기판;Transparent substrate; 상기 투명기판의 일면에 적층된 복수의 제1프리즘패턴; 및A plurality of first prism patterns stacked on one surface of the transparent substrate; And 상기 복수의 제1프리즘패턴의 양측에 배치된 제2프리즘패턴을 포함하고, A second prism pattern disposed on both sides of the plurality of first prism patterns; 상기 제2프리즘패턴의 피크는 상기 제1프리즘패턴의 피크 보다 낮은 위치에 존재하되,The peak of the second prism pattern is present at a lower position than the peak of the first prism pattern, 상기 제1프리즘패턴과 제2프리즘패턴은 제2프리즘패턴의 2/3 높이의 위치에서 교차되는 형상으로 반복 형성되는 것을 특징으로 하는 프리즘시트.The first prism pattern and the second prism pattern is a prism sheet, characterized in that repeatedly formed in the shape intersecting at the position of 2/3 height of the second prism pattern. 제1항에 있어서, The method of claim 1, 상기 투명기판은 그 내부에 다수의 광확산물질이 함유되어 있는 것을 특징으로 하는 프리즘시트.The transparent substrate is a prism sheet, characterized in that it contains a plurality of light diffusion material therein. 제2항에 있어서, The method of claim 2, 상기 광확산물질은 비드 및 마이크로로드 중에서 어느 하나의 형태로 이루어진 것을 특징으로 하는 프리즘시트. The light diffusing material is a prism sheet, characterized in that formed of any one of beads and microrods.
KR1020070107877A 2007-10-25 2007-10-25 Prism sheet KR100907703B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001004814A (en) 1999-06-17 2001-01-12 Dainippon Printing Co Ltd Prism sheet, forming die thereof, and manufacture of the forming die
US20060238874A1 (en) * 2005-04-22 2006-10-26 Industrial Technology Research Institute Light modulation element
KR20070103544A (en) * 2006-04-19 2007-10-24 삼성전자주식회사 Liquid crystal display and prism sheet for the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001004814A (en) 1999-06-17 2001-01-12 Dainippon Printing Co Ltd Prism sheet, forming die thereof, and manufacture of the forming die
US20060238874A1 (en) * 2005-04-22 2006-10-26 Industrial Technology Research Institute Light modulation element
KR20070103544A (en) * 2006-04-19 2007-10-24 삼성전자주식회사 Liquid crystal display and prism sheet for the same

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