TW201525586A - 背光模組及其光源模組 - Google Patents

背光模組及其光源模組 Download PDF

Info

Publication number
TW201525586A
TW201525586A TW102149139A TW102149139A TW201525586A TW 201525586 A TW201525586 A TW 201525586A TW 102149139 A TW102149139 A TW 102149139A TW 102149139 A TW102149139 A TW 102149139A TW 201525586 A TW201525586 A TW 201525586A
Authority
TW
Taiwan
Prior art keywords
light
light source
main body
module
body portion
Prior art date
Application number
TW102149139A
Other languages
English (en)
Inventor
章紹漢
Original Assignee
鴻海精密工業股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 鴻海精密工業股份有限公司 filed Critical 鴻海精密工業股份有限公司
Publication of TW201525586A publication Critical patent/TW201525586A/zh

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of elements
    • F21V13/04Combinations of only two kinds of elements the elements being reflectors and refractors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/04Refractors for light sources of lens shape
    • F21V5/048Refractors for light sources of lens shape the lens being a simple lens adapted to cooperate with a point-like source for emitting mainly in one direction and having an axis coincident with the main light transmission direction, e.g. convergent or divergent lenses, plano-concave or plano-convex lenses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/10Construction
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023Means 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
    • G02B6/003Lens or lenticular sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023Means 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
    • G02B6/0031Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0066Light 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
    • G02B6/0073Light emitting diode [LED]
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0085Means for removing heat created by the light source from the package
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means 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
    • G02B6/002Means 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0066Light 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
    • G02B6/0068Arrangements of plural sources, e.g. multi-colour light sources
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133628Illuminating devices with cooling means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一種背光模組,包括導光模組與固定連接於該導光模組中間位置的光源模組,導光模組包括後蓋、貼合設置於後蓋上的反射片、設置於該反射片上的導光板、設置於該導光板上的光學片組以及前框。光源模組包括主體部與位於主體部內的光源,後蓋上開設有入光部,主體部包括底板及與底板相對的兩個反射部,光源固定於底板上,兩個反射部組合形成一個扇形結構以覆蓋光源。主體部上設有與光源相對且位於兩個反射部之間的開口部,光源模組還包括裝設於開口部上的透鏡,光源發出的光線以及經該兩個反射部反射的光線經由透鏡出射至主體部之外。

Description

背光模組及其光源模組
本發明涉及一種背光模組,特別涉及一種直下式背光模組及其光源模組。
如今,顯示器所使用的背光模組出於薄型化之考慮多採用側光式背光模組,然側光式背光模組的光源只能設置在導光板的側邊,因此該背光模組的至少一個側邊會因光源設置於此而使得邊框寬度變大。
為了使背光模組同時具備窄邊框與薄型化的特點,近年來的一些習知技術採用直下式背光模組,將光源設置於導光板的下方,並採用光導管作為導光元件,光源產生的光線直接進入導光管中,透過導光管的全反射作用再進入導光板中。以此,可以實現背光模組同時具備窄邊框與薄型化的特點。
然該背光模組由於光源具有較廣的光束角,因此無論光導管如何設置,都會有一部分光線無法全反射,而造成漏光;另,當光導管與導光板未完全密合時,兩者之間會產生氣縫,光導管的出射光線會被接合面全反射回光導管,使入光率大幅降低,而實現光導管與導光板的完全密合,會大大提高組裝的難度。
鑒於上述狀況,有必要提供一種兼具窄邊框與薄型化特性的直下式背光模組,能夠有效增加入光量,提升光線利用效率。
一種光源模組,包括主體部與位於主體部內的光源。主體部包括底板及與底板相對的兩個反射部,光源固定於底板上,兩個反射部組合形成一個扇形結構以覆蓋該光源。主體部上設有與光源相對且位於兩個反射部之間的開口部,光源模組還包括裝設於開口部上的透鏡,光源發出的光線以及經該兩個反射部反射的光線經由透鏡出射至主體部之外。
一種背光模組,包括導光模組與固定連接於該導光模組中間位置的光源模組,導光模組包括後蓋、貼合設置於後蓋上的反射片、設置於該反射片上的導光板、設置於該導光板上的光學片組以及前框。光源模組包括主體部與位於主體部內的光源,後蓋上開設有入光部,主體部包括底板及與底板相對的兩個反射部,光源固定於底板上,兩個反射部組合形成一個扇形結構以覆蓋該光源。主體部上設有與光源相對且位於兩個反射部之間的開口部,光源模組還包括裝設於開口部上的透鏡,光源發出的光線以及經該兩個反射部反射的光線經由透鏡出射至主體部之外。
本發明的背光模組為直下式背光模組,兼具窄邊框與薄型化的特點。固定於底板上的光源產生的光線,較少部分直接射至透鏡上,而大部分經組合成扇形結構的兩個反射部反射後射至透鏡上,入射至透鏡表面的光線均發生折射而進入透鏡內,透鏡對光線的入射角度進行調整,以使盡可能多的光線經由透鏡出射,從透鏡出射的光線會再均入射至導光模組內部,從而能夠有效增加入射光線的入光率,提升光線利用率。
圖1係本發明背光模組的立體示意圖。
圖2係圖1所示的背光模組的立體分解圖。
圖3係圖1所示的背光模組的光源模組的立體示意圖。
圖4係圖3所示的光源模組的立體分解圖。
圖5係圖3所示的光源模組沿V-V的剖視圖。
圖6係圖1所示的背光模組的導光模組的立體分解圖。
圖7係圖1所示的背光模組的光路圖。
圖8係圖1所示的背光模組的光路圖的局部放大圖。
將參照附圖表述根據本發明的實施例。這些附圖均為簡化的示意圖,僅以示意方式說明本發明的基本結構,是故其僅顯示與本發明有關的構成。
請參照圖1與圖2,本發明的背光模組100包括光源模組10與導光模組20,光源模組10透過複數個螺絲30固定連接於導光模組20的中間位置。
請參照圖3與圖4,光源模組10大致為具有一開口的矩形長條狀的盒體結構,包括主體部110、光源123、複數個鎖附螺絲130、兩個側板140、透鏡150以及墊片160。
請一併參照圖5,主體部110為一長條狀U形結構,其包括底板111、兩個相對設置的側壁112、頂板113、以及位於兩個側壁112之間的兩個反射部114。
底板111為矩形長條狀結構,其上開設有複數個第一螺紋孔1111(圖3所示),用於固定LED基板120。較佳地,底板111可以由高導熱的散熱材質製成,以輔助LED進行散熱;另外,底板111的外側可設置有複數個散熱鰭片1112,散熱鰭片1112與底板111一體成型,以提升散熱效率。
兩個相對設置的側壁112垂直設置於底板111的兩個長邊方向的邊緣處,且沿同一方向延伸。頂板113蓋合於兩個側壁112的上側,並且頂板113的寬度大於兩個側壁112之間的距離。頂板113上位於兩個側壁112外側的邊緣上開設有複數個第二螺紋孔1131,用於將該光源模組10固定於導光模組20上。另外,頂板113中間位置並且與光源123相對處開設有開口部1132,用於放置透鏡150。
兩個反射部114分別位於兩個側壁112之間,與底板111相對。兩個反射部114組合形成一個扇形結構以覆蓋光源123。可以理解的是,反射部114可以為光滑曲面結構或者連續的平面結構。兩個反射部114的一端連接於側壁112與底板111形成的拐角處,兩者的另一端分別連接於開口部1132的邊緣處。較佳地,反射部114與頂板113的連接處可開設一凹槽115,透鏡150卡合於該凹槽115內被固定,但不限於此,透鏡150也可以透過其他方式固定於開口部1132內。反射部114與光源123相鄰的內表面上塗覆有反射層,該反射層為高反射率的塗層或者高反射率的鱗片狀結構,以提高反射部114的反射能力,增強光線的出射效果。
結合圖4所示,LED基板120為矩形長條狀結構,其尺寸小於底板111的尺寸。LED基板120在兩個長邊方向的邊緣處平行設置有複數個LED121,可以理解的是,也可以在LED基板120上的其他位置裝設LED。LED基板120設置於兩個反射部114之間,並且與底板111貼合。在與底板111上開設的複數個第一螺紋孔1111對應位置處,LED基板120上開設有複數個第三螺紋孔122。透過鎖附螺絲130旋轉進入第一螺紋孔1111與第三螺紋孔122,使LED基板120固定連接於底板111上。可以理解的是,LED基板120也可以透過膠體黏合或者其他方式固定連接於底板111上。LED基板120與複數個LED121組成光源123,以產生背光模組100所需的光線。
結合圖4所示,兩個側板140為矩形薄板,分別設置於主體部110的短邊方向上的兩個側面上。較佳地,該兩個側板140可以透過螺絲固定於主體部110上,以使側板140可方便地從主體部110上取下,從而可以方便地取出與更換LED基板120。但不限於此,兩個側板140也可以透過膠體黏合或者一體成型的方式裝設於主體部110的側面上。兩個側板140可防止光線自主體部110的側面漏出,較佳地,兩個側板140內表面上可塗覆高反射率的塗層或貼附高反射率的鱗片狀結構,以使照射至側板140上的光線能夠被有效反射,提高光線的利用率。
透鏡150設置於主體部110的開口部1132中。透鏡150包括面向LED121設置的入光面151及與入光面151相對設置的出光面152。入光面151呈“V”形,可以理解的是,入光面151也可以為半球形。入射光線經該“V”形入光面151的兩個斜面並在該兩個斜面處發生折射後,進入透鏡150內部,之後入射光線被傳送至出光面152上,經出光面152折射後,完成對入射光線入射角度的調整,以使入射光線盡可能多的入射至導光模組20內部,從而能夠有效增加入射光線的入光率。
墊片160設置於出光面152上,由透明彈性材料製成,如透明矽膠材料,但不限於此。墊片160可作為透鏡150與導光模組20之間的接合面,並且墊片160與兩者緊密貼合,以防止該接合面因為組裝或者微量變形產生氣縫而造成漏光,從而提升光線利用率。
請參照圖6,導光模組20包括後蓋210、貼合於後蓋210上的反射片220、設置於反射片220上的導光板230、設置於導光板230上的光學片組240以及前框250。
後蓋210是矩形盒狀結構,包括面板211、兩個相對設置的第一側壁212以及兩個相對設置的第二側壁213。面板211中間位置開設有矩形長條狀的入光部2111,墊片160一面貼附於透鏡150上表面,另一面貼附於該入光部2111上。入光部2111與光源模組10上設置的開口部1132配合,使入射光線經由透鏡150、墊片160進入導光模組20。入光部2111的兩側設置有複數個第四螺紋孔2112,該第四螺紋孔2112的位置與光源模組10上開設的第二螺紋孔1131的位置相對應。透過螺絲30旋轉進入第二螺紋孔1131與第四螺紋孔2112,使光源模組10固定連接於導光模組20上。可以理解的是,光源模組10也可以透過膠體黏合或者其他方式固定連接於導光模組20上。兩個相對設置的第一側壁212與兩個相對設置的第二側壁213分別垂直設置於面板211的四個邊緣,且沿同一方向延伸形成一收容空間(未標示)。
反射片220是矩形薄片狀結構,貼合於面板211上。反射片220由表面鍍銀的高反射材料或者白色的光密介質材料製成。反射片220中間位置上與面板211上開設的入光部2111對應位置處,開設有矩形長條狀的開口221。反射片220用於反射自LED121發射出來的以及經導光板230反射回該反射片220表面的光線。
導光板230設置於反射片220上,由高反射率且不吸光的材料製成。導光板230用於改變光線傳輸路線,使得經過該導光板230的光線的傳輸方向更加雜亂,使光強分佈更加均勻。
光學片組240收容於後蓋210形成的收容空間(未標示)內,包括複數個光學膜片。較佳地,該光學片組240包括層疊設置的擴散片241、棱鏡片242、棱鏡片243以及擴散片244。
前框250為一矩形框架結構,由塑膠材料製成,可以理解的是,前框250也可以由鋁材或者其他材質製成。前框250包括前板251、兩個相對設置的第三側壁252以及兩個相對設置的第四側壁253。前板251是一中空的矩形薄片,兩個相對設置的第三側壁252與兩個相對設置的第四側壁253分別垂直設置於前板251的四個邊緣,且沿同一方向延伸形成。前框250的兩個第三側壁252與兩個第四側壁253分別卡合於後蓋210的兩個第一側壁212與兩個第二側壁213的內表面上,從而使導光模組20形成一封閉的殼體。
下面結合圖7及圖8說明本發明背光模組100的光路傳輸原理:首先,LED121被點亮發出光線,該光線較少部分直接射至透鏡上,而大部分經內壁上塗覆有高反射率的塗層或者貼附高反射率的鱗片狀結構的反射部114反射至透鏡150的入光面151上,該光線在入光面151上發生折射後,進入透鏡150內部並被傳送至出光面152上,經出光面152折射,完成對入射光線入射角度的調整後經由墊片160,使盡可能多的光線經入光部2111(圖6所示)進入導光板230。導光板230上表面設置有光學片組240,下表面設置有反射片220。進入導光板230的光線以全反射模式進行傳輸,在導光板230上表面反射的光線經由光學片組240作用,使光線分佈更加均勻,在導光板230下表面反射的光線,經由反射片220作用使光線盡可能多的被全反射。
本發明的光源模組10,固定於底板111上的光源123產生的光線,較少部分直接射至透鏡150上,而大部分經組合成扇形結構的兩個反射部114反射後射至透鏡150的“V”形入光面151上,光線在該“V”形入光面151上發生折射,透鏡150對該光線的入射角度進行調整,以使盡可能多的光線入射至導光模組20內部,從而能夠有效增加入射光線的入光率;墊片160可作為透鏡150與入光部2111之間的接合面,並且與兩者緊密貼合,可以防止該接合面因為組裝或者微量變形產生氣縫而造成漏光,從而提升光線利用率,同時也可降低組裝難度。除此之外,底板111上設置有散熱鰭片1112,可有效提高LED的散熱效率。
本發明的背光模組100為直下式背光模組,兼具窄邊框與薄型化的特點,透過主體部110內的光源123產生光線,經兩個反射部114反射,使光線傳輸至透鏡150的入光面151,經透鏡150的折射作用,可以改變光線的傳輸路徑,使盡可能多的光線透過後蓋210上的入光部2111入射至導光模組20內部,從而能夠有效增加入射光線的入光率;墊片160可以防止光源模組10與導光模組20接合面因為組裝或者微量變形產生氣縫而造成漏光,從而提升光線利用率,同時也可降低組裝難度。除此之外,底板111上設置有散熱鰭片1112,可有效提高LED的散熱效率。
綜上所述,本發明確已符合發明專利要件,爰依法提出專利申請。惟,以上所述者僅為本發明之較佳實施方式,舉凡熟悉本案技藝之人士,於援依本案發明精神所作之等效修飾或變化,皆應包含於以下之申請專利範圍內。
100‧‧‧背光模組
10‧‧‧光源模組
20‧‧‧導光模組
30‧‧‧螺絲
110‧‧‧主體部
111‧‧‧底板
1111‧‧‧第一螺紋孔
1112‧‧‧散熱鰭片
112‧‧‧側壁
113‧‧‧頂板
1131‧‧‧第二螺紋孔
1132‧‧‧開口部
114‧‧‧反射部
115‧‧‧凹槽
120‧‧‧LED基板
121‧‧‧LED
122‧‧‧第三螺紋孔
123‧‧‧光源
130‧‧‧鎖附螺絲
140‧‧‧側板
150‧‧‧透鏡
151‧‧‧入光面
152‧‧‧出光面
160‧‧‧墊片
210‧‧‧後蓋
211‧‧‧面板
212‧‧‧第一側壁
213‧‧‧第二側壁
220‧‧‧反射片
230‧‧‧導光板
240‧‧‧光學片組
241、244‧‧‧擴散片
242、243‧‧‧棱鏡片
250‧‧‧前框
251‧‧‧前板
252‧‧‧第三側壁
253‧‧‧第四側壁
100‧‧‧背光模組
10‧‧‧光源模組
20‧‧‧導光模組
30‧‧‧螺絲

Claims (10)

  1. 一種光源模組,包括主體部與位於該主體部內的光源,其改良在於:該主體部包括底板及與該底板相對的兩個反射部,該光源固定於該底板上,該兩個反射部組合形成一個扇形結構以覆蓋該光源;該主體部上設有與該光源相對且位於兩個反射部之間的開口部;該光源模組還包括裝設於該開口部上的透鏡,該光源發出的光線以及經該兩個反射部反射的光線經由該透鏡出射至該主體部之外。
  2. 如申請專利範圍第1項所述之光源模組,其中該透鏡包括入光面與出光面,該入光面呈漏斗形或者半球形。
  3. 如申請專利範圍第1項所述之光源模組,其中該光源模組還包括設置於該透鏡上表面處的墊片,該墊片由透明彈性材料製成。
  4. 如申請專利範圍第1項所述之光源模組,其中該反射部為光滑曲面結構或者連續的平面結構。
  5. 如申請專利範圍第1項所述之光源模組,其中該反射部與該光源相鄰的內表面上塗覆有反射層。
  6. 如申請專利範圍第1項所述之光源模組,其中該主體部還包括頂板,該開口部設置在該頂板上。
  7. 如申請專利範圍第1項所述之光源模組,其中該底板上設置有散熱鰭片,該散熱鰭片與該底板一體成型。
  8. 如申請專利範圍第1項所述之光源模組,其中該主體部還包括兩個相對設置並與側壁連接的側板,該兩個側板分別設置於主體部的短邊方向上的兩個側面上。
  9. 一種背光模組,包括導光模組與固定連接於該導光模組中間位置的光源模組,該導光模組包括後蓋、貼合設置於該後蓋上的反射片、設置於該反射片上的導光板、設置於該導光板上的光學片組以及前框;該光源模組包括主體部與位於該主體部內的光源,其改良在於:該後蓋上開設有入光部,該主體部包括底板及與該底板相對的兩個反射部,該光源固定於該底板上,該兩個反射部組合形成一個扇形結構以覆蓋該光源;該主體部上設有與該光源相對且位於兩個反射部之間的開口部;該光源模組還包括裝設於該開口部上的透鏡,該光源發出的光線以及經該兩個反射部反射的光線經由該透鏡出射至該主體部之外。
  10. 如申請專利範圍第9項所述之背光模組,其中該反射片為矩形薄片狀結構,該反射片中間位置開設有長條狀的開口,該入光部與該開口對應設置,該光源發出的光線經由該入光部與該開口進入導光模組內部。
TW102149139A 2013-12-16 2013-12-30 背光模組及其光源模組 TW201525586A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310685388.9A CN104712959B (zh) 2013-12-16 2013-12-16 背光模组及其光源模组

Publications (1)

Publication Number Publication Date
TW201525586A true TW201525586A (zh) 2015-07-01

Family

ID=53368247

Family Applications (1)

Application Number Title Priority Date Filing Date
TW102149139A TW201525586A (zh) 2013-12-16 2013-12-30 背光模組及其光源模組

Country Status (3)

Country Link
US (1) US9632354B2 (zh)
CN (1) CN104712959B (zh)
TW (1) TW201525586A (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106090728B (zh) 2016-06-17 2018-09-11 京东方科技集团股份有限公司 背光模组及显示装置
CN106886106A (zh) * 2017-02-16 2017-06-23 广州毅昌科技股份有限公司 一种超薄背光模组

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929955A1 (de) * 1989-09-08 1991-03-14 Inotec Gmbh Ges Fuer Innovativ Lichtstrahler
JP3173453B2 (ja) * 1998-03-13 2001-06-04 スタンレー電気株式会社 車両用信号灯具
TWM245367U (en) * 2003-10-28 2004-10-01 Harvatek Corp Light source projecting apparatus for color illuminating module
US7255459B2 (en) * 2005-12-16 2007-08-14 United Microdisplay Optronics Corp. Light emitting diode light source
EP2074655B1 (en) * 2006-10-12 2016-04-13 Panasonic Intellectual Property Management Co., Ltd. Light-emitting apparatus
CN101603665A (zh) * 2008-06-13 2009-12-16 先进开发光电股份有限公司 发光二极管光源模块
KR101848719B1 (ko) * 2011-08-11 2018-04-16 삼성디스플레이 주식회사 백라이트 어셈블리

Also Published As

Publication number Publication date
CN104712959A (zh) 2015-06-17
US20150168782A1 (en) 2015-06-18
CN104712959B (zh) 2017-03-22
US9632354B2 (en) 2017-04-25

Similar Documents

Publication Publication Date Title
JP6192897B2 (ja) 発光装置、表示装置および照明装置
JP4633589B2 (ja) 面照明装置
TWI468800B (zh) 面光源裝置
TWI499845B (zh) 薄型顯示模組
TW201525587A (zh) 側光式背光模組及其導光板
TW201610523A (zh) 背光模組
WO2014021303A1 (ja) 照明装置、表示装置、及びテレビ受信装置
JP2012238431A (ja) エッジライト型バックライトユニット及びこれを用いた液晶モジュール
KR102005651B1 (ko) 도광판, 백라이트 모듈 및 디스플레이 장치
TW201518817A (zh) 側入式背光模組
WO2015016048A1 (ja) 光源装置、照明装置及び液晶表示装置
JP6303972B2 (ja) 面光源装置、表示装置、及び電子機器
WO2017163608A1 (ja) 発光装置、表示装置および照明装置
TW201520657A (zh) 側入式背光模組
TW201525586A (zh) 背光模組及其光源模組
JP2008198404A (ja) 照明装置
WO2013088594A1 (ja) バックライト装置および液晶表示装置
JP6298986B2 (ja) 照明装置
JP6708593B2 (ja) 表示装置
JP7249779B2 (ja) 表示装置および電子機器
TWI421589B (zh) 背光模組及應用該背光模組的液晶顯示裝置
TWI401508B (zh) 背光模組及使用其之顯示裝置
TW201520658A (zh) 背光模組
TW201924040A (zh) 具有情境燈光設計的顯示裝置
JP7257478B2 (ja) 表示装置および発光装置