KR100918033B1 - 곡선형 능선을 가지는 수분 배출성이 우수한 프리즘 시트및 이를 이용한 액정표시장치 - Google Patents
곡선형 능선을 가지는 수분 배출성이 우수한 프리즘 시트및 이를 이용한 액정표시장치 Download PDFInfo
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- KR100918033B1 KR100918033B1 KR1020070090178A KR20070090178A KR100918033B1 KR 100918033 B1 KR100918033 B1 KR 100918033B1 KR 1020070090178 A KR1020070090178 A KR 1020070090178A KR 20070090178 A KR20070090178 A KR 20070090178A KR 100918033 B1 KR100918033 B1 KR 100918033B1
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/0074—Production of other optical elements not provided for in B29D11/00009- B29D11/0073
- B29D11/00788—Producing optical films
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- 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
- G02B5/0221—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 an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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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
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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
- G02B6/0013—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
- G02B6/003—Lens or lenticular sheet or layer
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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
- G02B6/0033—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
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
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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
- G02B6/0033—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
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- 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
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- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
Claims (18)
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- 평탄한 일면을 가지는 투명 재질의 베이스 필름;상기 평탄한 일면과 대향하는 상기 베이스 필름의 타면에 상기 베이스 필름과 일체로 소정의 단면 형상을 가진 복수개의 단위프리즘들이 일방향으로 배열되어 있는 광굴절부가 형성되어 있으며,상기 복수개의 단위 프리즘들 사이에 일정한 간격으로 이격평면이 형성되어 있고,상기 광굴절부를 구성하는 상기 단위프리즘의 능선은 불규칙한 곡선으로 형성되어 수분 배출공간을 확보하는 것을 특징으로 하는 프리즘 시트.
- 삭제
- 평탄한 일면을 가지는 투명 재질의 베이스 필름;상기 평탄한 일면과 대향하는 상기 베이스 필름의 타면에 상기 베이스 필름과 일체로 소정의 단면 형상을 가진 복수개의 단위프리즘들이 일방향으로 배열되어 있는 광굴절부가 형성되어 있으며,서로 이웃하는 단위프리즘 사이의 계곡부위에 빛을 확산시켜주기 위한 광확산체가 상기 단위프리즘과 일체형으로 형성되며, 상기 광확산체는 상기 단위프리즘의 계곡면에 불규칙하게 분포되어 있고,상기 광굴절부를 구성하는 상기 단위프리즘의 능선은 불규칙한 곡선으로 형성되어 수분 배출공간을 확보하는 것을 특징으로 하는 프리즘 시트.
- 제 13 항에 있어서,상기 광확산체는 상기 단위프리즘 높이의 절반 이하 높이의 계곡면에 50% 이상이 분포되어 있는 것을 특징으로 하는 프리즘 시트.
- 제 13 항에 있어서,상기 광확산체는 원형의 렌즈 형상으로 되어 있고, 렌즈 형상의 지름은 단위프리즘 피치의 0.01 내지 0.9 배 크기인 것을 특징으로 하는 프리즘 시트.
- 제 13 항에 있어서,상기 광확산체는 타원형의 렌즈 형상으로 되어 있고, 렌즈 형상의 장반경은 단위프리즘 피치의 0.01 내지 0.9 배 크기인 것을 특징으로 하는 프리즘 시트.
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KR1020070090178A KR100918033B1 (ko) | 2007-09-05 | 2007-09-05 | 곡선형 능선을 가지는 수분 배출성이 우수한 프리즘 시트및 이를 이용한 액정표시장치 |
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KR1020070090178A KR100918033B1 (ko) | 2007-09-05 | 2007-09-05 | 곡선형 능선을 가지는 수분 배출성이 우수한 프리즘 시트및 이를 이용한 액정표시장치 |
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KR1020090058301A Division KR101038661B1 (ko) | 2009-06-29 | 2009-06-29 | 곡선형 능선을 가지는 수분 배출성이 우수한 프리즘 시트 및 이를 이용한 액정표시장치 |
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Citations (2)
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KR100432347B1 (ko) * | 2003-07-01 | 2004-05-20 | 주식회사 엘지에스 | 백라이트 유닛의 집광시트 |
KR200364045Y1 (ko) * | 2004-04-22 | 2004-10-08 | 쉬-치에 탕 | 곡선형 프리즘 단위를 갖는 광도증진필름 |
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KR100432347B1 (ko) * | 2003-07-01 | 2004-05-20 | 주식회사 엘지에스 | 백라이트 유닛의 집광시트 |
KR200364045Y1 (ko) * | 2004-04-22 | 2004-10-08 | 쉬-치에 탕 | 곡선형 프리즘 단위를 갖는 광도증진필름 |
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