TWI243920B - Light redirecting films and film systems - Google Patents
Light redirecting films and film systems Download PDFInfo
- Publication number
- TWI243920B TWI243920B TW091116003A TW91116003A TWI243920B TW I243920 B TWI243920 B TW I243920B TW 091116003 A TW091116003 A TW 091116003A TW 91116003 A TW91116003 A TW 91116003A TW I243920 B TWI243920 B TW I243920B
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- Taiwan
- Prior art keywords
- light
- optical elements
- patent application
- light redirecting
- item
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M21/02—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/10—Refractors for light sources comprising photoluminescent material
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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
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
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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
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
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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
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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
- G02B6/005—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
- 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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
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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
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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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B2090/309—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using white LEDs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
- A61M2021/0044—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus by the sight sense
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/063—Radiation therapy using light comprising light transmitting means, e.g. optical fibres
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/065—Light sources therefor
- A61N2005/0651—Diodes
- A61N2005/0652—Arrays of diodes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0613—Apparatus adapted for a specific treatment
- A61N5/0621—Hyperbilirubinemia, jaundice treatment
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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
- G02B6/0028—Light guide, e.g. taper
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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
- G02B6/0031—Reflecting element, 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
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
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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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/062—Light conductor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/07—Actuators transparent
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Acoustics & Sound (AREA)
- Heart & Thoracic Surgery (AREA)
- Pain & Pain Management (AREA)
- Psychology (AREA)
- Manufacturing & Machinery (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Optical Elements Other Than Lenses (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Description
A7 1243920 五、發明說明(I ) 發明之領域 (請先閱讀背面之注意事項再填寫本頁) 本發明係相關於光線改向薄膜以及薄膜系統以用於可 將自一光源朝一垂直於該薄膜之垂直方向之光予以改向。 發明之背景 線· 光改向薄膜係爲一薄透明或是透光光學薄膜或是基底 ,且該薄膜可再將穿過該薄膜之光再分佈以使得自該薄膜 出口之光的分佈係被導向至更爲垂直於該薄膜之表面的方 向。直至目前,光線改向薄膜係被提供有在薄膜之光出口 表面上之菱鏡狀凹槽,透鏡狀凹槽,或是金字塔,而這些 構造可改變一用於光線射出該薄膜之薄膜/空氣界面之角 度並且使得入射光在行經在一垂直於該凹槽折射面之分佈 成份再被分佈於一更垂直於該薄膜之表面的方向上。該光 線改向薄膜可被倂合,例如,液晶顯示器而被使用在桌上 型電腦,文書處理器,航空電子顯示器,行動電話機,個 人數位處理器以及類似之東西以使顯示器更明亮。 «Γ. 該薄膜之入口表面大部份具有一透明或是粗糙面之加 工,其係依所需之影像外觀而定。一粗糙面之加工可產生 一較軟影像但是由於該粗糙面以及擴散表面所造成額外散 射以及最終光損耗之故而使該影像並不明亮。 直至目前,大部份之應用係使用兩個相互旋轉放置之 凹槽薄膜以使得在各別薄膜中之凹槽係形成爲相互90度。 此一安裝之理由係一凹槽化之光改向薄膜會將行經在一垂 直於該凹槽之折射面上之入射光的分量再分佈於朝向垂直 __3 _ 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) A7 1243920 五、發明說明(/ ) (請先閱讀背面之注意事項再填寫本頁) 於該薄膜表面之方向。因此,爲了以兩個方向將改向至該 薄膜表面,就必需要將兩個凹槽薄膜層相互旋轉90度;其 中一薄膜層係將行經在它的凹槽方向之垂直面的光予以改 向;而另一薄膜層係將行經在它的凹槽方向之垂直面的光 予以改向。 在過去所作之各種方法係來製造一單一層光線改向薄 膜,其將入射光分佈在相互90度之不同軸之分量予以改向 。完成此一改向薄膜之一已知方式爲提供一單一層,且該 層具有兩組互垂直延伸之凹槽而形成一金字塔結構以將行 經在如此兩方之光予以改向。然而,如此一薄膜所產生光 之亮度遠低於由兩薄膜層且每一具有被架構相互旋轉90度 之單一凹槽,此乃因在單一層中被第二組凹槽所除去之該 第一凹槽的之面積將可獲得將每一行經的光實質減少50% 之表面面積予以減少。 此外,直至目前,光線改向薄膜之凹槽係被建構成可 使得所有凹槽以相同之角度,大約爲45度,接觸至該薄膜 之表面。此一設計係假定自該光源之光的固定之擴散角分 佈,且該光源係朗伯(lambertian)源,使用一印刷或是技術 以抽取光之背光面板,或是一在重擴散器後之背光面板。 一光線改向薄膜,其中所有光改向表面係以相同角度接觸 該薄膜,不是被最佳化於用於一光源且該光源具有在該光 源上方之不同面積處之一方向性發射分量。例如,繞著一 現代高效率照高亮度背光之平均角度係隨著與該光源之距 離而不同,且該角度係使用凹槽或是微光學表面以抽出光 ______4 _— —— 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) A7 1243920 五、發明說明(3 ) ;又要求一介於該光改向表面與該薄膜平面之不同角度以 最佳地將光改向至朝向垂直於該薄膜。 (請先閱讀背面之注意事項再填寫本頁) 因此,就存在有一能產生更軟影像之光線改向薄膜之 需求,然而消除了相關於在薄膜之光輸入側上之一粗糙或 是擴散加工的亮度上之減少。同樣地,就存在有一能產生 更軟影像之光線改向薄膜之需求,且該薄膜能將行經平行 於在一凹槽薄膜之折射表面之一部份光予以改向,如此該 光將會較使用菱鏡或是透鏡凹槽之一單一層者更亮。此外 ,就存在有一能補償光之不同角分佈之光線改向薄膜之需 求,其中該光係可能離開在光源上方之特定光源,又該光 源爲例如用來照亮液晶顯示器之背光。同樣地,就存在有 一之光線改向薄膜之需求,且該薄膜係被匹配或是被調整 至一背光或其他光之光輸出分佈以使得重置向或改向自該 背光之更多的入射光於一所需之視角內。 發明摘要 本發明係相關於光線改向薄膜以及光線改向薄膜系統 ’其可將自一背景光或其他光源所發射出的更多之光予改 向至一更垂直於該薄膜平面,並且係相關於一光線改向薄 膜且該光線改向薄膜可產生一較軟的影像而不減少爲了增 加有效性,而在薄膜之光輸入側上具有一粗糙或是擴散加 工上之売度。 該薄膜之光出口表面具有一定義良好形狀之分離各別 光學元件之圖案以用於折射該入射光分佈而使得射出該薄 ----- -5 ___ 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) A7 1243920 五、發明說明(& ) 膜之光分佈係在於一更垂直於該薄膜平面之方向上。這些 各別光學元件可藉由在該薄膜之出口表面上之凹陷或凸出 而形成的,並且包括一或是更多之傾斜表面以用於將入射 光折射至一垂直該出口表面之方向上。這些傾斜表面可以 例如包括平坦及彎曲表面之一組合,且該組合將光改向在 一所需之視角內。同時,該表面之曲率,或是該各別光學 元件之彎曲面積與平坦面積之比値以及該彎曲與平坦表面 之週邊外形可被改變以調整該薄膜之光輸出分佈,並且用 來在與該薄膜倂合使用之顯示裝置之視角最佳化。此外, 該表面之曲率,或是該各別光學元件之彎曲面積與平坦面 積之比値可被改變以將在行經一平行於一菱鏡或透鏡凹槽 薄膜之凹槽之平面內之更多或更少的光予以改向。而且該 各別光學元件之之尺寸及數量,以及該各別光學元件之表 面的曲率可被選擇以產生一更多或更少擴散輸出,或是將 來自該光源之輸人光分佈予以隨機化以產生一較軟更擴散 之光輸出分佈,但仍維持該光輸出分佈在一繞著垂直該薄 膜之方向的所需定角域內。 該薄膜之光入口表面可以具有一光學鍍膜,比如一抗 反射鍍膜,一反射極化器,一延緩鍍膜或一極化器。同時 ,一粗糙或是擴散組織可以依據所需之外觀影像而被提供 在光出口表面上。一粗糙加工可產生一較軟影像但並不亮 〇 在該薄膜之光射出表面上之各別光學元件可以被如此 一方式隨機化以使得消除任何與一液晶顯示器之像素間隔 ___6______ ^"張尺度適用中國國家標準(CNS)A4規格(210 x 297公f (請先閱讀背面之注意事項再填寫本頁)
A7 1243920 _____B7 ____ 五、發明說明(ζ ) 之干涉。此一隨機化係包括該光學元件之尺寸’外形,位 置,深度,方向,角度或是密度。如此消除了擴散器之需 求以去除波紋或類似效應。而且’該各別光學元件之至少 一些可被一群群地安裝在跨過該薄之出口表面上,且在每 群中之至少一些光學元件具有一可集合地產生對每一群之 平均尺寸或外形特性之不同尺寸或是外形特性’且該特性 係跨過薄膜而改變以獲得對任何單一光學元件之超過加工 容許之特性値並且去除波紋以及與一液晶顯示器之像素間 隔之干涉效應。此外,該各別光學元件之至少一些可被置 向成相互間之不同角度以用於可製定該薄膜之沿著兩不同 軸的再置向/改向的能力。 該各別光學元件之光改向薄膜與該薄膜之出口表面相 交角度亦可被改變於跨過一液晶顯示器之顯示面積以使得 整修該薄膜之光改向函數至一光輸入分佈,且該光輸入分 ‘佈係爲非均勻地跨過該光源之表面。 該光線改向薄膜之各別光學元件亦需要相互地以一交 錯式,聯鎖式以及/或是相交式架構來重疊,以製造出一 具有極佳表面積覆蓋之光學結構。甚而,該各別光學元件 被一群群地安裝並且一些各別光學元件係被置向於沿著一 軸,而其他的各別光學元件係被置向於其他軸。而且,在 每一群中之該各別光學元件之方向係可以改變。更進而言 之,該光線改向薄膜之各別光學元件之尺寸,外形,位置 以及/或是方向可被改變以考慮到在由一光源所射出光之 分佈的變化量。 L— —___7 _ 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) ·1111111 —------- A7 1243920 五、發明說明(b ) 該光線改向薄膜之光學元件的特性及圖案亦可以被定 做成將該光線改向薄膜最佳化以用於不同型式之光源’且 該光源發射出不同光分佈,例如,一用於單一桌上型燈泡 之圖案,另一用於雙燈泡平坦面板顯示器之圖案,以及等 等。 更進而,光線改向薄膜系統係被提供且該系統中之該 光改向薄膜的各別光學元件之方向,尺寸,位置以及/或 是外形係被整修爲一背光或是其他光源之光輸出分佈以使 得將更多來自背光之入射光予以再置向/改向在一所需之 視角內。同樣地,該背光可能包括可將光準直於一軸之各 別光學畸形器以及該光線改向薄膜可以包括各別光學元件 ,其將光準直於垂直該一軸之另一軸。 爲了達成前述以及相關之目的,本發明然後包括下述 之更詳細敘述及在申請專利範圍中別指出之特點,接下來 之說明以及所提出更詳細之附加圖式可確實解說本發明之 實施例,但是這些是指示性而不是本發明之各種原理可以 被使用到之數個變化方式。 圖式簡單說明 圖1係根據本發明之光改向薄膜系統的一形式之一槪 略側面圖; 圖2係圖1所示之背光以及光改向薄膜系統的一部份 之一部份放大側面圖; 圖3以及圖4係根據本發明之光線改向薄膜系統的其 _____8_ 尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) --- (請先閱讀背面之注意事項再填寫本頁) ---I I---訂---------· A7
Bl___ 五、發明說明(7 ) 他形式之槪略側面圖; 圖5係槪略立體圖,其揭示在光線改向薄膜上之各別 光學元件的交錯相交圖案; .圖5a-5n係在該光改向薄膜系統上之各別光學元件可 能採用不同幾何形狀之槪略立體圖; 圖6係槪略平面圖,其揭示薄膜上之各別光學元件的 重疊圖案; 圖7係槪略立體圖,其揭示薄膜上之不同尺寸的各別 光學元件的交錯重疊圖案; 圖8係槪略立體圖,其揭示薄膜上之不同形狀、尺寸 、高度或深度的各別光學元件的相交圖案; 圖9係槪略立體圖,其揭示薄膜上之各別光學元件的 相交圖案; 圖10係槪略立體圖,其揭示薄膜上之不同形狀、尺寸 、高度或深度的各別光學元件的相交圖案; 圖11係槪略平面圖,其揭示薄膜上之各別光學元件的 聯鎖圖案; 圖12係槪略平面圖,其揭示薄膜上之各別光學元件的 另一聯鎖圖案; 圖13係槪略立體圖,其揭示薄膜上之各別光學元件的 另一重疊圖案; 圖14係槪略立體圖,其揭示薄膜上之不同形狀、尺寸 、局度或涂度的各別光學兀件的另一圖案, 圖15係槪略立體圖,其揭示沿著薄膜卷長度之各別光 9 本紙張尺度適β中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) -------^ -訂— Φ. 1243920 A7 ______ B7 ___ 五、發明說明(P) 學元件的重複圖案; 圖16係槪略立體圖,其揭示薄膜上之不同形狀、尺寸 、高度或深度的各別光學元件的隨機圖案; 圖17係槪略平面圖,其揭示薄膜上之不同形狀、尺寸 、高度或深度的各別光學元件的另一隨機圖案; 圖18係槪略平面圖,其揭示跨過薄膜而排列爲呈角度 之群組圖案的各別光學元件; 圖19係槪略平面圖,其揭示排列爲面對薄膜角落而呈 輻射圖案的各別光學元件; 圖20係槪略平面圖,其揭示排列爲面對薄膜輸入邊緣 之中點而呈輻射圖案的各別光學元件; 圖21係在一面對薄膜角落之彎曲圖案中具有延伸過該 薄膜之光學凹槽之光線改向薄膜之槪略立體圖; 圖22係在一面對薄膜邊緣之中點處之具有延伸過該薄 膜之光學凹槽之光線改向薄膜之俯視平面圖,且該薄膜在 離該邊緣的距離愈增加則其曲率愈減少; 圖23係當由圖22所示之光線改向薄膜之左終端視之 終端平面圖; 圖24係圖22所示之光線改向薄膜的側面圖; 圖25以及26係一背景光/光發射面板組件之一表面 積的部份放大平面圖,且該圖揭示形成在該背光之一表面 上之各種形式光學畸形器; 圖27以及28係分別穿過圖25以及26所示光學畸形 器之一個的放大縱剖面圖; 10 ^紙張尺度適用中國國家^票準(CNS)aH格(210 X 207公釐) — 一 (請先閱讀背面之注意事項再填寫本頁) --------訂— AT. 1243920 A7 _B7____ 五、發明說明(β ) 圖29以及30係穿過形成在該背光之一表面上之其他 光學畸形器的放大縱剖面圖; 圖31-39包含有其他定義良好之各別光學畸形器的各 種屬案之背光表面之放大槪略立體圖; 圖40係穿過形成在該背光之一表面上之另一型光學畸 形器的放大縱剖面圖; 圖41以及42係包含有在形狀上類似於其他掲示在圖 37以及38且以複數個直線行沿著表面長度方向之光學畸 形器之背光表面之放大槪略俯視圖; 圖43以及44係包含有在形狀上類似於其他揭示在圖 37以及38且以交錯行沿著表面長度方向之光學畸形器之 背光表面之放大槪略俯視圖; 圖45以及46係包含有在表面上之一隨機或是可變圖 案之背光表面之放大槪略俯視圖; 圖47係一背景表面之放大槪略俯視圖,其揭示在當該 畸形器離開光輸入面之距離增加或光強度沿著表面長度方. 向增加時,則光學畸形器之尺寸增加; 圖48以及49係槪略俯視圖,其揭示沿著一背景光表 面之長度及寬度方向之光學畸形器的不同角度方向; 圖50以及51係槪略放大立體圖,其揭示自一焦距化 光源所射出的示範性光線係如何地被一背景光之良好定義 形狀之不同各別光學畸形器所反射或是折射。 元件符號說明 11 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) F--------訂·--- 1243920 A7 B7 r-— ----- 一 一 ^ 五、發明說明u〇) 1光線改向薄膜系統,2光線改向薄膜,5各別光學 元件,8基底,10,12,15,16表面,14圓頂外形,18金 字塔,19三角狀,20傾斜側面,22傾斜平面側面,23 端面,24頂部,25光學鍍膜,26光源(燈泡或發光二極 體),30擴散層,32群,35凹槽,40圖案或背反射器 ,41卷,50,58,76,77,85光學畸形器,51凹陷或突出, 54折射表面,55邊緣,56邊緣部份,57,60,65,74終端 壁,59,67反射/折射表面,62,75側壁,66,80,光抽出 畸形器,69,70斜側壁,79表面,81凹陷,82簇群, 86列,90光線,93側,95邊緣 較佳實施例之詳細說明 圖1以及2係槪略地揭示根據本發明之光線改向薄膜 系統1的一形式,且該系統係包括一光線改向薄膜2,其 可將自一背景光BL或其他光源所發射出的更多之光予改 向至一更垂直於該薄膜平面。薄膜2可以被用來將光再分 佈於所需之視角之內以得顯示器更亮,且該光係自用於照 亮之幾乎所有光源,例如,一顯示器D比如液晶顯示器, 其使用在桌上型電腦,文書處理器,航空顯示器,行動動 g舌’ PDAs以及類似東西。該液晶顯示器可以是任何形式並 包括如在圖1以及2槪略所示之穿透式液晶顯示器,在圖 3槪略所示之反射式液晶顯示器以及在圖4槪略所示之穿 透反射式液晶顯示器。 在圖3所示之反射式液晶顯示器D係包括一鄰近背側 12 本紙張尺度適用中國國家標準(CNS)A4規格(21〇χ 297公釐) (請先閱讀背面之注意事項再填寫本頁)
C ϋ n n n II 一°J* n n n n ϋ n n I . 1243920 A7 _____ B7______ 五、發明說明(II ) 之背反射器40以用於將進入該顯示器之周圍光線反射離開 該顯示器以增加該顯示器之亮度。本發明之光線改向薄膜 2係被置放在鄰近該反射式液晶顯示器之頂部以將周圍光 線(或是來自前部光源之光)改向進入該顯示器,且進入方 向係朝向一更垂直於該薄膜平面之方向以可藉由背反射器 之反射回去而在一所需之視角內,以達到使顯示器更亮之 目的。光線改向薄膜2可以被附著至,疊層至或其他方式 固持在一頂靠液晶顯示器之頂部。 在圖4所示之穿透反射式液晶顯示器係包括一被放置 在介於該顯示器以及一背光BL間之穿透反射以用於將進 入該顯示器之前部之周圍光反射並使其離開該顯示器以增 加在一照売環境中之顯示器之亮度,以及可用於穿透該背 光經過該穿透反射器並離開該顯示器以照亮在一暗環境中 之顯示器。在此一實施例中,該光線改向薄膜2可以如在 圖4槪略所示之不是被放置在鄰近液晶顯示器之頂部就是 鄰近液晶顯示器之底部或是兩者以用於改向或再分佈周圍. 光以及/或是自背光之光而使其更垂直於該薄膜之平面, 藉此使光線輸出分佈更可接受地行經過該顯示器並增加該 顯示器之亮度。 光線改向薄膜系統2係包括一薄透明薄膜或是透明基 底8,其具有在該薄膜之光射出表面上之定義良好形狀的 各別光學元件5之一圖案以用於折射該入射光分佈而使得 射出該薄膜之光的分佈係在一更垂直該薄膜表面之方向上 〇 13 本纸張尺度適周中國國家標準(CNS)A4規格(210 X 297公釐) II--------------------------- (請先閱讀背面之注意事項再填寫本頁) 1243920 A7 ___ B7 ___ 五、發明說明(Π) 每一各別光學元件5具有一較該薄膜之寬度及長度少 許多倍之寬度以及長度,並且可以藉由在該薄膜之出口表 面上之凹陷或凸出而形成。這些各別光學元件5係包括至 少一傾斜面以用於折射入射光並使其朝向垂直該薄膜出口 表面之方向上。圖5揭不在一薄膜2上之g亥各別光學元件 5之一圖案。這些光學元件可以採用許多不同形狀。例如 ,圖5a係揭示一具有共爲兩個表面10之非菱鏡光學元件 5,且該兩者表面係傾斜。被揭示在圖5a之一個表面1〇係 平面或是平坦狀,然而其他之表面係彎曲。甚而,兩者表. 面10,12係互爲相交並且與該薄膜之表面相交。另一種方 式地,該各別光學元件之兩者表面1〇,12可以如被槪略掲 示在圖5b之彎曲狀。 另一種方式地,該各別光學元件5可以每一僅具有一 表面,其係成彎曲狀並傾斜及相交該薄膜。圖5c係揭示一 如此光學元件5,其具有一圓錐13外形,然而圖5d揭示 另一具有半球或是圓頂外形14之光學元件。同樣地,如此 光學元件可以具有超過一個相交該薄膜之傾斜表面。 圖5e揭示一具有總共三個表面之光學元件5,且這三 個表面相交該薄膜而且互爲相交。兩個表面15以及16係 彎曲,然而第三個表面17係平面的。 圖5f係揭示一具有一金字塔18外形之一光學元件5 ,且該金字塔再具有互爲相交且與該薄膜相交之四個三角 狀側面19。該金字塔18之側面19可以是就如在圖5f中 所示之相同大小以及外形,或是該金字塔18之側面19可 14 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) ---------—.—訂— (請先閱讀背面之注意事項再填寫本頁)
L S. 1243920 A7 ^__B7_ 五、發明說明(/3 ) 以被延展成使得該側面19爲如在圖5g中所示之不同周邊 外形。同樣地,該光學元件5可以具有任何數量之平面狀 之傾斜側面。圖5h揭示一具有四個平面狀傾斜側面20之 光學元件5,然而圖揭示一具有八個平面狀傾斜側面20 之光學元件5。 該各別光學元件5可以亦具有超過一個彎曲狀以及超 過一個平面狀傾斜表面,且其全部相交該薄膜。圖5j揭示 一光學元件5,其具有一對相對地相交之傾斜平面側面22 以及相對地彎曲或弧狀之端面或是側面23。更進而言之, 該傾斜平面側面22以及彎曲端面或側面可以具有如圖5k 及51所示之不同傾斜角度之斜面。甚而,該光學元件5可 以具有至少一個並不與該薄膜相交之彎曲表面。一如此光 學元件5係被揭示在圖5m中,其包括一對相對地相交之 傾斜平面側面22以及相對地彎曲或弧狀之端面或是側面 23,以及一相交該相對傾斜側面及相對彎曲端面之彎曲或 弧狀頂部24。更進而言之,該光學元件5可被彎曲成沿著. 其長度方向,其就如在圖5n中所示。 在該各別光學元件5提供具平面以及彎曲表面之組合 係可改向或是再份佈成較具有一凹槽薄膜所能提供之較大 視角。同樣地,該表面之曲率,或是該各別光學元件之彎 曲面積與平面面積之比値可被改變成整修該薄膜之光輸出 分佈以定做出一與該薄膜倂合使用之顯示裝置之觀視面積 〇 該薄膜2之光入口表面7可以具有一光學鍍膜25(請 15 本紙張尺度適3中國國家標準(CNS)A4規格(210 X 297公爱) (請先閱讀背面之注意事項再填寫本頁) 訂--------- J. 1243920 Δ7 Α7 ____Β7___ 五、發明說明(冲) 視圖2)比如一抗反射鍍膜,一反射極化器,一延緩鑛膜或 是一極化器。同樣地,一粗糙或是一擴散組織可視所需影 像外觀之需要而被提供在該光入口表面7上。一粗糙加工 可產生一較軟影像但爲不夠亮。本發明之光學元件5 之平面以及彎曲表面之組合可以被架構成將以各個方 向撞擊該薄膜之一些光線予以改向以產生一較軟影像而不 需要一額外擴散器或是粗糙加工在該薄膜之入口表面上。 該光線改向薄膜2之各別光學元件5亦需要相互地以 一交錯式,聯鎖式以及/或是相交式架構來重疊,以製造 出一具有極佳表面積覆蓋之光學結構。例如,圖6,7,13 以及15揭不相互交錯式之光學元件5 ;圖8-10係揭示相 互相交式之光學元件5 ;以及圖11和12係揭示相互相交 式之光學元件5。 甚而,該光線改向薄膜2之光學元件5之傾斜角度, 密度,位置,方向,高度或是深度。外形,以及/或是尺 寸可以被匹配或是被調整爲一背光BL或其他光源之特定 先fe出分佈以考慮到在由背光所射出光之分佈上之變化量 以達到將更多由背光所射出光再分佈於所需視角之目 的。例如,該光學元件5之傾斜表面(例如,表面 10,12)與該光線改向薄膜2相交之角度可以隨著該背光bl 與該一光源26之距離之增加而改變,以考慮到背光射出光 線R之角度係隨著與該光源距離之增加而不同,其槪略如 圖2中所示。同樣地,該背光本身可以被設計成以更低的 角度射出更多光線以增加由該光源所射光之量,並且該背 16 'i pi ϋ n fwef n «ϋ l i n ami I fl^ (請先閱讀背面之注意事項再填寫本頁) 1T--------- 枣纸張尺度適同中國國家標準(CNS)A4規格(210 X 297公釐) 1243920 A7 __B7_____ 五、發明說明(Lt) 光依賴該光線改向薄膜以將該所射出之光再分佈於所需之 視角內。以此一方式,該光改向薄膜2之光學元件5可被 選擇與該背光之光學畸形器相倂合工作以產生一自該系統 之最佳化輸出光線角度分佈。 圖2,5以及9係揭示各別光學元件5之不同圖案,其 皆具有相同之高度或是深度,然而圖7,8,10,14以及14係 揭示各別光學元件5之不同圖案,其皆具有不同外形,大 小,以及高度或是深度。 該各別光學元件5可以被隨機形成在該薄膜2之上, 其槪略如圖16和17所示,且形成之方式係以達到可消除 任何與一液晶顯示器之像素間隔之干涉的目的。如此消除 了如在圖1以及2所示之藉由光學擴散層30來去除波紋以 及類似效應的需求。甚而,至少一些該各別光學元件5可 被一群群32地安裝在跨過該薄膜之出口表面上,且該在每 一群中之至少一些光學元件具有可集合地產生對每一群之 平均尺寸或外形特性之不同尺寸或外形特性,且該特性係 跨過薄膜而改變以獲得對任何一光學元件之超過加工容許 之特性値並且去除波紋以及與一液晶顯示 器之像素間隔之干涉效應。例如,在每一群32中之至 少一些光學元件5可以具有一不同之深度或是高度,其可 集合地產生對每一隨著跨過該薄膜而改變的群而言之平均 深度或是高度特性。同樣地,在每一群中之至少一些光學 元件可以具有不同之傾斜角度,其可集合地產生對每一隨 著跨過該薄膜而改變的群而言之平均傾斜角度。更進而, 17 本纸張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) I V---ί---------------訂·--- (請先閱讀背面之注意事項再填寫本頁) 拳· 1243920 A7 ____B7__ 五、發明說明(丨έ ) 在每一群中之該光學元件之至少一傾斜表面可以具有不同 之寬度或長度,其可集合地產生對每一隨著跨過該薄膜而 改變的群而言之平均寬度或長度特性。 在該各別光學元件5包括平面以及彎曲表面1〇,12之 組合之中,該彎曲表面12之曲率,或是該各別光學元件之 彎曲面積與該平面面積之比値以及該彎曲與平面表面之周 邊外形可以被改變以整修該薄膜之光輸出分佈。此外,該 彎曲表面12之曲率,或是該各別光學元件之彎曲面積與該 平面面積之比値係可以被改變以將行經在一平面中之更多 或更少的光予以改向,且該平面爲平行於一菱鏡或透鏡凹 槽薄膜內之凹槽,因而部份地或完全地取代一用於光線改 向薄膜之第二層的需求。同樣地,至少一些各別光學元件 可以如在圖13及16槪略所示地被置向爲其相互間係不同 的角度以將更多由一光源所射出之光再分佈成沿著兩個不 同的軸且分佈在一更垂直該薄膜表面之方向上,因而部份 地或完全地取代一用於光線改向薄膜之第二層的需求。然 而’吾人應重視到如此光改向薄膜之兩層且每一具有在該 薄S旲上之各別光學元件5之相同或是不同之圖案,且該兩 層可以被置放在介於一光源與具有兩層爲相互間之9〇度( 或是其他大於0度且小於90度之角度)之觀視面積之間以 使得在各別薄膜上之各別光學元件可將更多該一光源所射 出且行經在不同平面方向之光予以再分佈於一更垂直各別 薄月旲之表面之方向上。 同樣地,該光線改向薄膜2可具有光學元件5之一圖 18 ^^^國 規格----— (請先閱讀背面之注意事項再填寫本頁)
F ------訂---------· 1243920 A7 _____B7___ 五、發明說明(门) 案’且該圖案係就如在圖15中所示地在不同位置而改變以 將自一光源或是其他光源之不同位置的光線輸出分佈予以 再分佈至朝向一垂直該薄膜之方向。 更進而言之,光線改向薄膜2之光學元件之特性及圖 案可以被定做以將用於不同型且發射不同光分佈之光源之 光改向薄膜予以最佳化,例如,一圖案用於單一燈泡桌上 型,另一圖案用於雙燈泡平面面板顯示器,以及等等。 圖Π揭示該一以輻射狀地自該薄膜2之外側邊緣朝向 中心安裝之光學元件5,其可將自一背光BL之光線輸出分 佈予以再分佈且該背光係沿著該背光之四側邊緣接收來自 冷陰極氟燈泡26之光。 圖18係揭示一以跨過該薄膜2之角度化群32之圖案 被安裝之光學元件5,其使薄膜被整修成將來自背光BL之 光線輸出分佈予以再分佈且該背光係沿著該背光之一輸入 邊緣接收來自一冷陰極氟燈泡26或是複數個發光二極體 26 ° 圖19揭示光學元件5,其係以面對該薄膜之一角落之 一輻射型圖案而被安裝以可將一背光之光線輸出分佈予以 再分佈且該分佈係在一角落被一發光二極體26所照亮。圖 20揭示揭示光學元件5,其係以面對該薄膜之一輸入邊緣 之一中心點之一輻射型圖案而被安裝以可將一背光之光線 輸出分佈予以再分佈且該分佈係在該背光之輸入邊緣之一 中心處被一'發光一極體2 6所照売。 圖21揭示一具有光學凹槽35之光線改向薄膜2,且 19 本纸張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) --------tr---------. 1243920 A7 __________B7__ 五、發明說明(⑶) 該凹槽係延伸跨過該薄膜並爲以一彎曲圖案面對該薄膜之 一角洛以可將一背光之光線輸出分佈予以再分佈且該分佈 係在一角落被一發光二極體26所照亮;然而圖22-24揭示 一具有光學凹槽35之圖案之光線改向薄膜2,且該凹槽係 延伸跨過該薄膜並面對沿著該薄膜之一邊緣之一中心點, 又該薄膜之曲率係隨著與該一邊緣之距離之增加而減少以 可將一背光BL之光線輸出分佈予以再分佈且該分佈係被 一發光一極體26在該背光之一輸入邊緣之中心點處予以邊 緣照亮。 在該光線改向薄膜2具有一在其上之光學元件5之一 沿著該薄膜長度方向上改變之圖案40之中,該薄膜2之一 卷41可以被提供有一在其上之重復光學元件圖案,其就槪 略如圖15所不,以允g午該圖案之最適合一特定應用之一選 定面積可自該卷薄膜被晶粒切除。 該背光BL可以實質地平坦,或是彎曲,或是可以爲 一單層或是多層,並且可以如所需要地具有不同厚度以及 外形。甚而,該背光可以爲彈性或是剛性,以及可以被多 種化合物製成。更進而,該背光可以是中空,其被塡有液 體,氣體,或是固體,以及可以爲洞穴或背脊。 同樣地,該光源26可以爲任何型,且該型,例如,包 括一弧形燈泡,可以被加色,被塡充或被塗之發光燈泡, 一鏡子終端燈泡,一線型光,一鹵素燈,一發光二極體 (LED),一自一 LED之晶片,一氖燈泡,一冷陰極氟燈泡 ,一自遙遠光源所傳輸之一光學光纖管,一雷射或是一雷 20 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) C---------訂---------· 1243920 A7 _____B7_ 五、發明說明() 射二極體,或是任何其他適當之光源。此外,該光源26可 以是多色彩化之LED,或是多顏色化輻射源之一組合以達 到可提供一所需色彩或白色光輸出分佈。例如,複數個顏 色光,不同顏色之LEDs(即,紅,藍,綠)或是具有多色光 晶片之一單一 LED可被使用來藉由改變每一各別顏色光之 強度以製造白光或是任何其他顏色光輸出分佈。 光學畸形器之一圖案可被提供在該背光BL之一或是 兩側面上,或若需要的話,被提供在該背光之一或兩側面 上之一或更多被選定之面積上。就如在此所使用到,該名 詞光學畸形器係指在一表面,以及/或是鑛膜或表面處理 之在外形上或幾何之改變,且該改變可造成一部份的 光將會從該背光射出。這些畸形器可以以多種方式被 提供,例如,藉由提供一油印圖案,一蝕刻圖案,加工圖 案,一印刷圖案,一熱壓印圖案,或一鑄鎮圖案或類似之 東西在該背光之選定面積上。一油或壓印圖案可以藉由例 如,一墊印刷圖案,絲印刷圖案,噴墨,熱傳送薄 膜製程或類似而被施加。該畸形器亦可以被印刷在一 板或一薄膜上,如此則使其用來施加該畸形器至該背光。 此一板或薄膜可變成該背光之永久部件,例如’藉由附著 或其他方式之定位該板或薄膜並使其靠著該背光之一或兩 側面以達到產生所需效應之目的。 藉由改變在該背光之上或是在其中之密度’不透光或 透光,外形,深度,顏色,面積,折射率或畸形器之型態 ,則該背光之光輸出便能被控制。該畸形器可以被用來控 21 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) *--------訂·-------I . 1243920 A7 ____B7___ 五、發明說明(勿) 制該背光之一光射出面積之光輸出百分比。例如,更少以 及/或是更小尺寸之畸形器可被放置在需要更少光輸出之 處。相反地,一較大百分比以及或是較大畸形器可被放置 在需要更多光輸出之處。 在該背光之不同面積中之畸形器之改變該百分比以及 /或是其尺寸係必需的以達到提供一實質地均勻光輸出之 目的。例如,行穿過該背光之光量將會一般地在接近該光 源之面積中比起其他更遠離該光源面積來得大。畸形器之 一圖案可被用來調整在該背光內之光變化,例如,且該調 整係藉由提供在愈遠離該光源處之一畸形器之更密濃度達 成,因此自該背光造成一更均勻之光輸出分佈。 該畸形器亦可以被用來控制自該背光之輸出光線角度 分佈以適合一特定應用。例如,如果該背光係用背照亮一 液晶顯不器,且如果該畸形器(或是一光改向薄膜2係與§亥 背光一起倂用)將該由背光所射出光線予以改向在預定射線 角度以使得這些光線將以低損耗穿通過該液晶顯示器’則 該光輸出將會更有效率。此外,光學畸形器之圖案亦可以 被用來調整可歸因於該背光之光抽出之光輸出變化。該光 學畸形器之圖案可被印刷在該背光表面面積上,且其係藉 由使用油印,油,鍍膜,樹脂或類似之一寬頻譜’其範 圍從亮光至不透光的或兩者,並且該畸形器可以使用半§周 分離技術來改變畸形器之覆蓋。甚而,該光學畸形器之圖 案可以是多層或是在折射率上之改變。 光學畸形器之印刷圖案可以在外形上改變,比如點’ 22 本紙張尺度適闬中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) r--------訂---------· 1243920 Δ/ _____B7__ 五、發明說明(丄I) 正方形,鑽石形,橢圓形,星形,隨機形或類似。而且, 每一吋六十條線或更細之印刷圖案係需要地予以採用。如 此使得在該印刷圖案中之崎形益或外形在一^特定應用中幾 乎對人類眼睛係看不到,藉此消除了偵側到之 梯狀或帶狀線,其係對於使用較大元件而言則爲常見 之光抽出圖案。此外,該畸形器沿著該背光之長度以及/ 或是寬度之在外形以及/或是尺寸之改變。同樣地,該畸 形器之隨機放置圖案可被使用在該背光之全部長度以及/ 或是寬度。該畸形器可以具有無特定角度之外形或 是一圖案以減少波紋或其他干涉效應。製造這些隨機 圖案之方法的範例係將使用隨機印刷圖案技術,頻率調變 半調圖案,或是隨機點半調而印刷一外形之圖案。甚而, 該畸形器可被色彩化以達到影響在該背光中之顏色校正之 目的。該畸形器之顏色也可以在該全部背光中改 變,例如,以提供不同顏色以用於相同或是不同光輸 出面積。 除了或取代該光學畸形器之圖案外,其他包括菱鏡或 透鏡或十字形凹槽,或是使用更複雜圖案在一鑄模圖案中 所形成之各種形狀的凹陷或是抬高表面之畸形器可被鑄模 ,蝕刻,壓印,熱轉型,熱壓印類似地在該背光之一或更 多表面積之上或之內。該菱鏡或透鏡表面,凹陷或抬高表 面將使得一部份光線被接觸並自該背光射出。同樣地,該 菱鏡,凹陷或其他表面之角度可以被改變將光導向至不同 方向以產生一所需之光輸出分佈或效應。甚而,該反射或 23 (請先閱讀背面之江意事項再填寫本頁) r--------訂---------. 本纸張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 1243920 A7 _______Β7__ 五、發明說明(U) 折射表面可以具有不具特定角度之外形或一圖案以減少波 紋或是其他干涉效應。 (請先閱讀背面之注意事項再填寫本頁) 一背反射器40可被附著至或被定位頂靠著該背光BL 之一側面,如圖1及2所不,並藉由將自該側面射出之光 反射回去穿過該用於射穿過該對面側之背光而達到改善光 輸出效率之目的。此外,光學畸形器50之一圖案可以被提 供在該背光之一或是兩側之上,其如圖1及2所示,以達 到改變光之路徑之目的並使得超過內部臨界角以及一部份 光線係自該背光之一或是兩側射出。 圖25-28揭示光學畸形器且該畸形器可以不是在各別 背光表面積52上之各別突出部51就是在該表面積上之各 別凹陷51。在其他之情況中,每一這些光學畸形器50具 有一包括一反射或是折射表面54之良好定義之外形,且該 表面在一邊緣55相交該各別背光表面積52並且具有一穿 過其長度之均勻斜面以用於精確地控制由每一畸形器所出 之光。每一畸形器之一終端壁係沿著每一反射/折射表面 54之一周邊邊緣部份56,且該終端壁係以一較大於一介於 反射或是折射表面54與該面板表面積52(請看圖27及28) 之傾斜角的傾斜角來相交於該各別背光表面積52以將在該 面板表面積上之突出表面積最小化。如此則比起如果該終 端壁57之突出表面積係實質相同於或較大於該反射/折射 表面54之突出表面積的話,其可能允許更多畸形器50被 放置該面板表面積之上或之內。 在圖25以及26之中,該反射/折射表面54之周邊邊 24 本紙張尺度適用中國國家標準(CNS)A4規格(210 x 297公釐) 1243920 a7 __B7 五、發明說明() 緣部份56及相連之畸形器50之終端壁57係被揭示成貫質 地延伸且垂直該畸形器之反射或是折射表面54。另一種方 式地,如此終端壁57可以實質延伸垂直該面板表面積52 ,其就如在圖29及30中所示。如此實質地消除了在該面 板表面積52上之終端壁57之任何突出表面積,藉此在該 面板表面積52上之畸形器之密度可以甚至更進而被增加。 該光學畸形器亦可以是其他良好定義之外形以獲得自 一面板表面積之一所需光輸出分佈。圖31揭不在一面板表 面積52上之各別光抽出畸形器58,且每一畸形器包括一 大致平面,矩形反射/折射表面59以及具有一均勻斜面穿 過它們的長度和寬度及大致平坦側壁62之相連終端壁60 。另一種方式地,該畸形器58’可以具有彎曲或弧狀之側壁 62,其槪略如在圖32所示。 圖33揭示在一面板表面積52上之各別光抽出畸形器 63,且每一畸形器包括一平面,傾斜三角外形之反射/折 射表面64以及相連之平面狀及大致三角外形側壁或是終端. 壁65。圖34揭示各別光抽出畸形器66,且每一包括一平 面傾斜之反射/折射表面67,其具有斜周邊邊緣部份68 以及相連之斜終端和斜側壁69及70。 圖35揭示各別光抽出畸形器71,其係大致爲圓錐外 形,然而圖36揭示各別光抽出畸形器72,且每一具有弧 狀反射/折射表面73以及弧狀終端壁74以及弧狀或彎曲 側壁75且全邰混合一起。這些額外表面將自不同方向撞撃 該表面之其他光線予以反射或折射以散佈光於跨過該該背 25 本纸張尺度適S中國國家標準(CNS)A4規格(210 X 297公f ) (請先閒讀背面之注意事項再填寫本頁) C---- ·11111111 A7 1243920 _ B7___ 五、發明說明(Η) 光/面板構件BL,故提供一自該面板構件之更均勻分佈的 光。 不管該各別畸形器之反射/折射表面以及終端壁及側 壁之特定形狀,如此畸形亦包括平面表面,其相交於該反 射/折射表面以及終端壁及側壁,其係相對於該面板表面 面積52平行地隔開◦圖37-39揭示畸形器76,77以及78爲 在一面板表面面積上之各別突出物之形式且該畸形器除了 每一畸形器係被一與該面板表面面積52平行地隔開之平面 表面79所相交外,還分別具有類似於被揭示在圖31,32以 及35之代表外形。以同樣方式,圖40揭許多畸形器80之 一個,且該畸形器係以在一面板表面面積中之各別凹陷81 的形式且每一凹陷係相交於一平面表面79,其係相對於該 面板表面面積52之大致平面表面而平行地隔開。任何光線 係以內部角小於用於自該面板表面面積52射出之臨界角來 撞擊該平面表面79,則將會被該平面表面79內部地反射 ,然而任何光線係以內部角大於該臨界角來撞擊該平面表 面79,則將會以最小光學不連續性而被該平面表面79射 出,其槪略如在圖40中所示。 在該畸形器係在該面板表面面積52上突出之處,該反 射/折射表面以一角遠離該面板而延伸且在一相反於該光 線自該光源26行穿過該面板之方向上,其如在圖27以及 29中所示。在該畸形器係在該面板表面面積52內之凹陷 之處,該反射/折射表面以一角延伸進入該面板且在一大 致相同於該光線自該光源26行穿過該面板構件之方向上, 26 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) · ϋ n In n n l n. · MM W VM MM MW 雪 1243920 A7 __ . 五、發明說明(让) 其如在圖28以及30中所示。 不管該畸形器係凹陷或是突出在該面板表面面積52之 上或之內,該畸形器之光反射/折射表面之斜率可以被改 變以使得撞擊該表面之光線不是被折射離開該光射出面板 就是反射回去穿過該面板且自該面板之相對側射出,且該 面板可被蝕刻成自面板射出或是被一光改向薄膜2所覆蓋 之光線予以擴散以產生一所需效應。同樣,在該面板表面 面積上之光學畸形器之圖案可是均勻或需要的話加以改變 以獲得自在該面板表面面積之所需光輸出分佈。圖41及 42揭示畸形器76及77,其類似於在圖37及38所揭示的 並被安裝成沿著一面板表面面積52之長度及寬度之複數個 大致平均間隔之直線列,然而圖43及44揭示如此畸形器 76及77,其被安裝成沿著一面板表面面積之長度之相互重 疊之交錯列。 同樣地,該光學畸形器之尺寸,其包括寬度,長度以 及深度或高度以及其角置向及位置可以沿著任何給定面板 表面面積之長度以及/或寬度而加以改變以獲得自該面板 表面面積之所需的光輸出分佈。圖45及46揭示不同尺寸 畸形器58及58’之一隨機或可變圖案,其分別類似於在圖 31及32所揭示的並被安裝成在一面板表面面積52上之交 錯列,然而圖47揭示外形上類似於圖38所示之畸形器77 ,且該畸形器隨著與該光源距離增加或沿著該面板表面面 積之長度以及/或寬度之光強度減少,而減少其尺寸。該 畸形器58及58’係被揭示在圖45及46中並被安裝成跨過 27 尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 一 (請先閱讀背面之注意事項再填寫本頁) ---------tr---------· !243920 A7 ----- -_B7____ 五、發明說明(4 ) 該面板表面之簇群82,其在每一簇群中至少一些畸形器具 有不同尺寸或外形特性,且該不同尺寸或外形特性可共同 地產生對每一跨過該面板表面而改變之簇群的一平均尺寸 或外形特性。例如,在每一簇群中至少一些畸形器具有不 同涂度或局度,不同的斜率或置向,且其可共同地產生對 每一跨過該面板表面之斜表面的一平均深度或高度特性, 平均斜率或置向。同樣地,在每一簇群中至少一些畸形器 具有不同寬度或長度,且可共同地產生跨過該面板表面而 改變之一平均寬度或長度特性。如此則允許吾人可獲得超 過加工容許之所需尺寸及外形特性,且其產可消除波紋干 渉效應。 圖48及49槪略揭示沿著一面板表面面積52之長度及 寬度,任何所需外形之光學畸形器85的不同角方向。在圖 48中,該畸形器被安裝成沿著該面板表面面積之長度之直 線列86,但在每一列中之畸形器係被置向於面對該光源 26以使得所有畸形器係實質地與自該光源射出之光線爲同. 一線上。在圖49中,該畸形器85係類似於圖48也被置向 於面對該光源26。此外,在圖49中之畸形器之列87係實 質地輻射對準於該光源26。 圖50及51槪略揭示自一焦距化光源26射出之示範光 線90且該焦距化光源係被鑄模或鑄造成插入在一根據本發 明之一光發面板組件BL之一光傳送面積91之內,係如何 地在其行經穿過該光發面板構件92期間被反射一直到該光 線撞擊在一面板表面積52之上或之內之被良好定義形狀之 28 本纸張尺度適3中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) —訂---------' 1243920 A7 ___B7____ 五、發明說明(幻) 各別光抽出畸形器50,77爲止以使得較另一側94更多光將 被反射或是折射離開該面板構件之一側93。在圖50中, 該示範光線90係揭示爲被該畸形器之反射/折射表面54 所反射在大致同一方向且穿出該面板構件之同一側93,然 而在圖51中,該光線90係揭示爲在該光線被該面板組件 之同一側93所反射/折射之前,其係被該畸形器77之弧 狀側壁62所散射成在該面板組件92內之不同方向。根據 本發明之具有良好定義形狀之各別光抽出畸形器之該圖案 通使得60至70%或更多的光被接收穿過該面板構件之輸入 邊緣95及將自該面板構件之同一側射出。 由前述中,可明顯視出本發明之該光線改向薄膜可再 分佈更多自一背光或其他光源所射出之光朝向一更垂直於 該薄膜平面之方向上。同樣地,本發明之該光線改向薄膜 及背光可以互相整修或調整以提供一系統,且在該系統中 該光線改向薄膜之各別光學元件可與該背光之光畸形相倂 合工作以產生自該系統之一最佳輸出光線角分佈。 雖然本發明已對某些實施例予以揭示及敘述,但明顯 地對那些本行業者當他們讀完及理解本說明書後,則等效 性改變或修正將會發生。特別地,關於由上述元件所完成 之各種功能,該用來描述如此元件之名詞(包括任何參考至 一”裝置”)係被用來對應於,除非另有其他指示,任何可完 成所述元件(即係指功能等效性)之元件,甚至不算結構地 等效於可執行在此所述本發明示範性實施例功能之被揭露 元件。此外,雖然本發明之特點係被揭露在於僅一實施例 29 本紙張尺度適用中國國家標準(CNS)A4規格(2l〇x 297公釐) (請先閱讀背面之注意事項再填寫本頁) r--------訂---------· A7 1243920 __B7____ 五、發明說明(說) ,但若需要增進功效於任何給定或特定功能的話則如此特 點可與其他實施例之一或更多其他特點相組合。 (請先閱讀背面之注意事項再填寫本頁) 裝---------II---------%1. 本紙張尺度適S中國國家標準(CNS)A4規格(210 X 297公f )
Claims (1)
- AyB8c8D8 1243920 六、申請專利範圍 (請先閲讀背面之注意事項再塡寫本頁) L一種光線改向薄膜,其包括一薄光學透明基底,該 基底從一側接收光和將光予以改向而從相對側出去,在該 基底之上或之中具有良好定義外形之各別光學元件,以將 至少某些從一側進入和從相對側離開之光予以再分佈朝向 一垂直該基底之方向上,且至少一些該光學元件係具有比 寬度長的長度,該光學元件相對於基底的寬度和長度而言 是很小’至少一些該光學元件係具有至少兩個傾斜表面, 其彼此相交而形成具有終點的背脊,該至少一些光學元件 的背脊係大致平行於光學元件的長度方向,又至少一些該 光學元件係相互相交或聯鎖。 2.如申請專利範圍第1項所述之光線改向薄膜,其中 該光學元件係隨機地相互相交或聯鎖。 3 ·如申日R專利車E圍弟1項所述之光線改向薄膜,其中 至少一些該光學元件係在該基底的一側、相對側或兩側之 上或之中。 4·一種光線改向薄膜,其包括一薄光學透明基底,該 基底從一側接收光和將光予以改向而從相對側出去,在該 基底之上或之中具有良好定義外形之各別光學元件,以將 至少某些從一側進入和從相對側離開之光予以再分佈朝向 一垂直該基底之方向上,且該光學元件相對於基底的寬度 和長度而言是很小,至少一些該光學元件係具有至少兩個 傾斜表面,其彼此相交而形成具有終點的背脊,而在背脊 終結處該終點相交於基底或是另一光學元件,該至少一些 光學元件的背脊係大致於相同方向上,又該光學元件係相 1 本紙張尺度適用中國國家標準(CNS)A4規格(21CU 297公釐) ' 1243920 B8 C8 —'——-— D8_ 六、申請專利範圍 互相交或聯鎖,使得該光學元件實質地覆蓋該基底的至少 一側。 5·如申請專利範圍第4項所述之光線改向薄膜,其中 δ 亥光學元件係隨機地相互相交或聯鎖。 6.如申請專利範圍第4項所述之光線改向薄膜,其中 至少一些該光學元件係在該基底的一側、相對側或兩側之 上或之中。 7·如申請專利範圍第4項所述之光線改向薄膜,其中 該至少一些光學元件的背脊係在相同的平面。 8·—種光線改向薄膜,其包括一薄光學透明基底,該 基底從一側接收光和將光予以改向而從相對側出去,在該 基底之上或之中具有良好定義外形之各別光學元件,以將 至少某些從一側進入和從相對側出去之光予以改向成預定 的射線圖案,且該光學元件相對於基底的寬度和長度而言 是很小,至少一些該光學元件係具有至少一彎曲表面和另 一傾斜表面,其彼此相交而形成背脊,該背脊具有介於背 脊終點之間的最大高度或深度,且背脊的終點乃相交於背 脊終結處的基底或是另一光學元件,又該光學元件係相互 相交或聯鎖,使得該光學元件實質地覆蓋該基底的至少一 側。 9.如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件之尺寸係跨過該薄膜而改變。 10·如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件之密度係跨過該薄膜而改變。 2 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) _____________0!! (請先閲讀背面之注意事項再場寫本頁) 訂: 線赢 1243920 C8 D8 六、申請專利範圍 11. 如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件具有呈角度的表面,其面積係跨過該薄 膜而改變。 12. 如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件之深度或高度係跨過該薄膜而改變。 13. 如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件的置向係跨過該薄膜而改變。 14. 如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件具有呈角度的表面,其深度或高度係跨 過該薄膜而改變。 15. 如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些光學元件係以不同角度被置向跨過該基底,以用 於改向光爲沿著不同的軸。 16. 如申請專利範圍第8項所述之光線改向薄膜,其中 該基底至少一側是平滑的。 17. 如申請專利範圍第8項所述之光線改向薄膜,其中 該基底至少一側被鍍有一光學鍍膜。 18. 如申請專利範圍第8項所述之光線改向薄膜,其中 該基底至少一側具有一粗糙或組織加工之表面。 19. 如申請專利範圍第8項所述之光線改向薄膜,其中 該光學元件的背脊是在單一平面。 20. 如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些該光學元件係以不同角度相交於該基底。 21. 如申請專利範圍第8項所述之光線改向薄膜,其中 3 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閲讀背面之注意事項再塡寫本頁)A8895 ABCD 1243920 六、申請專利範圍 至少一些該光學元件僅有一個背脊。 22·如申請專利範圍第8項所述之光線改向薄膜,其中 (請先閲讀背面之注意事項再塡寫本頁) 至少一些該光學元件係在該基底的一側、相對側或兩側之 上或之中。 23. 如申請專利範圍第8項所述之光線改向薄膜,其中 該光學元件之傾斜表面與彎曲表面之比値係被選擇以產生 一所需之視角。 24. 如申請專利範圍第8項所述之光線改向薄膜,其中 該光學元件之彎曲表面的曲率係被選擇以產生〜所需之視 角。 25·如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些該光學元件係具有至少兩個平面表面。 26·如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些該光學元件係具有至少兩個彎曲表面。 27.如申請專利範圍第8項所述之光線改向薄膜,其中 至少一些該光學元件係具有至少兩個傾斜表面,其相$於 基底或另一光學元件。 28·如申請專利範圍第8項所述之光線改向薄膜,其包 括兩層該光線改向薄膜,其相對於彼此而旋轉。 4 ------ ---- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公愛)
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- 2002-07-11 EP EP02756435.0A patent/EP1415110B1/en not_active Expired - Lifetime
- 2002-07-11 WO PCT/US2002/021898 patent/WO2003008860A1/en active Application Filing
- 2002-07-11 KR KR1020097004566A patent/KR100961043B1/ko not_active IP Right Cessation
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- 2002-07-11 CN CNB028162102A patent/CN1288457C/zh not_active Expired - Fee Related
- 2002-07-11 JP JP2003514169A patent/JP4349902B2/ja not_active Expired - Fee Related
- 2002-07-11 CN CNB2006101321880A patent/CN100432717C/zh not_active Expired - Fee Related
- 2002-07-11 EP EP20120169696 patent/EP2523025A3/en not_active Withdrawn
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2003
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2006
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2008
- 2008-03-25 US US12/054,680 patent/US7914196B2/en not_active Expired - Fee Related
- 2008-10-14 US US12/250,922 patent/US20090034293A1/en not_active Abandoned
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2009
- 2009-02-03 US US12/364,637 patent/US7810982B2/en not_active Expired - Fee Related
- 2009-02-03 US US12/364,554 patent/US8092068B2/en not_active Expired - Fee Related
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2010
- 2010-11-15 US US12/946,077 patent/US20110058390A1/en not_active Abandoned
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2011
- 2011-02-18 US US13/030,881 patent/US20110134362A1/en not_active Abandoned
- 2011-12-07 US US13/313,190 patent/US8322905B2/en not_active Expired - Fee Related
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2013
- 2013-05-14 US US13/893,886 patent/US8845176B2/en not_active Expired - Fee Related
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TWI451138B (zh) * | 2007-10-05 | 2014-09-01 | Hon Hai Prec Ind Co Ltd | 稜鏡片及採用該稜鏡片之液晶顯示裝置 |
TWI400531B (zh) * | 2009-12-23 | 2013-07-01 | Innolux Corp | 背光模組及其光學板 |
US10215344B2 (en) | 2012-03-05 | 2019-02-26 | Fluxwerx Illumination Inc. | Light emitting panel assemblies and light guides therefor |
TWI670738B (zh) * | 2012-03-13 | 2019-09-01 | 美商盧米泰克斯公司 | 光導和鍵盤背光 |
US9733411B2 (en) | 2012-10-31 | 2017-08-15 | Fluxwerx Illumination Inc. | Light extraction elements |
US9823406B2 (en) | 2012-10-31 | 2017-11-21 | Fluxwerx Illumination Inc. | Light extraction elements |
US9201188B2 (en) | 2012-11-30 | 2015-12-01 | Lg Display Co., Ltd. | Blacklight unit, liquid crystal display device having the same and fabrication method thereof |
TWI560498B (en) * | 2012-11-30 | 2016-12-01 | Lg Display Co Ltd | Backlight unit, liquid crystal display device having the same and fabrication method thereof |
TWI752721B (zh) * | 2020-11-10 | 2022-01-11 | 誠屏科技股份有限公司 | 導光板與光源裝置 |
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