TWI342628B - Light emitting diode package, direct type back light module and side type backlight module - Google Patents
Light emitting diode package, direct type back light module and side type backlight module Download PDFInfo
- Publication number
- TWI342628B TWI342628B TW096128414A TW96128414A TWI342628B TW I342628 B TWI342628 B TW I342628B TW 096128414 A TW096128414 A TW 096128414A TW 96128414 A TW96128414 A TW 96128414A TW I342628 B TWI342628 B TW I342628B
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- backlight module
- emitting diode
- carbonate
- diode package
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 60
- 238000000149 argon plasma sintering Methods 0.000 claims description 25
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 14
- 150000004767 nitrides Chemical class 0.000 claims description 13
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 10
- 239000001095 magnesium carbonate Substances 0.000 claims description 10
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 10
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 9
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 229910052582 BN Inorganic materials 0.000 claims description 7
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 7
- 239000012190 activator Substances 0.000 claims description 7
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 5
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- FCRMJSYZVAIBRC-UHFFFAOYSA-N 1,2,4,5-tetraoxane-3,6-dione Chemical compound O=C1OOC(=O)OO1 FCRMJSYZVAIBRC-UHFFFAOYSA-N 0.000 claims description 3
- 125000005586 carbonic acid group Chemical group 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims 1
- 239000004115 Sodium Silicate Substances 0.000 claims 1
- 240000006394 Sorghum bicolor Species 0.000 claims 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims 1
- 229910052744 lithium Inorganic materials 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 229910052911 sodium silicate Inorganic materials 0.000 claims 1
- 230000000153 supplemental effect Effects 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 claims 1
- 235000012431 wafers Nutrition 0.000 description 10
- HFNQLYDPNAZRCH-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O.OC(O)=O HFNQLYDPNAZRCH-UHFFFAOYSA-N 0.000 description 8
- 238000000605 extraction Methods 0.000 description 5
- -1 boron nitride Chemical class 0.000 description 4
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 4
- 229910000024 caesium carbonate Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 206010036790 Productive cough Diseases 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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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
- G02B6/0051—Diffusing 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
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/49105—Connecting at different heights
- H01L2224/49107—Connecting at different heights on the semiconductor or solid-state body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0091—Scattering means in or on the semiconductor body or semiconductor body package
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
Description
21139twf.doc/n 九、發明說明: 【發明所屬之技術領域】 本發明是有關於一種發光二極體與背光模組,且特別 是有關於一種具有混光均勻發光二極體與背光模組。 【先前技術】 隨著光學技術不斷地演進,並且隨著現代人生活水準 的提升’現代人對於照明設備以及影像顯示設備之照明品 質及成像品質的要求亦不斷提升。在這些照明設備愈影像 顯示設備中,通常會利用具有光散射體的材料來提升影像 顯示設備的光源以及照明設備所發出之光線的均勻度。 舉例而言,發光二極體晶片自從發展以來,由於其低 耗電量、低污染、使用壽命長、反應速度快等特性,已被 廣泛應用在各領域當中,諸如父通號諸、戶外看板、以及 跑馬燈等。為了避免發光二極體晶片受到外界環境的破 壞,並且為了增加發光二極體的出光效率(light extraction efficiency) ’製造者通常會將經由封裝技術將發光二極體 晶片製作成發光二極體封裝。 值得注意的是’為了使發光二極體所發出的光線更加 地均勻’製造者通常會將具有光散射體的散射材料配置於 發光二體晶片上,以增加發光二極體封裝所發出之光線的 均勻度。 此外’就液晶顯示器的背光模組而言,製造者通常亦 會使用具有光散射體的擴散片,以增加背光模組所產生之 21139twf.doc/n 面光源的均勻度。 ,得注意的是’f知之光散射體的材料大多是氧化 •呂太乳化⑪、氧化鋅與氧化鈦等奈米氧化物 。然而上述這 化物之散射粒子卻容易造成發光二極體封裝之出 光效率的下降以及背光模組所發出不均勻之面光源。 【發明内容】 本發明之目的是提供—種具有高出光效率的發光二 極體封裝。 本發明之目的是提供—種直下式背光模組以及側邊 入光式背光模組,其能夠發出均㈣面光源。 為達上述或是其他目的’本發明提出一種發光二極體 封裝’其包括-承載器、H極體;以及一光散射 材料。發光二極體晶片配置於承載器上並且與承載器電性 連接,其中發光二極體晶片適於發出—波長為\之光線。 光散射材料配置於承載Hh光散㈣料包括多個光散射 體,以將入射至其表面之光線散射,其中光散射體的材質 疋雙折射率材料(如碳酸鋇、碳酸銷、碳酸鐘、碳酸納、 碳酸鉀、碳酸鎂等),或是氮化物(如氮化硼等)。 在本發明之一實施例中,上述之光散射材料更包括多 個波長轉換活化體’適於麵波長為λι之光線的激發,而 發出-波長為λ2之光線。波長轉換活化體之材料例如是選 自於螢光制、鱗光材料、純触成之組群巾的其中一 種0 21139twf.doc/n 在本發明之一實施例中’上述之發光二極體晶片包括 紅光、綠光、藍光發光二極體晶片,且紅光、綠光、藍光 發光二極體晶片可分別由不同線路提供電源,以調整所需 之發光顏色’進而利用光散射材料進行混光增加均勻性及 亮度。 本發明提出一種直下式背光模組,其包括一燈箱、多 個光源以及一擴散片。這些光源位於燈箱内。擴散片位於 燈箱内且位於這些光源上方。擴散片具有多個光散射體, 以將入射至其表面之光線散射,其中光散射體的材質是雙 折射率材料(如礙酸鋇、碳酸錯、碳酸鐘、碳酸納、碳酸 鉀、碳酸鎮等),或是氣化物(如氮化蝴等)。 在本發明之一實施例中,上述之光源是發光二極體或 冷陰極螢光燈管。 本發明提出一種侧邊入光式背光模組,其包括一框 架‘光板、一光源以及一擴散片。導光板位於框架内, 其中導光板具有一入光面以及一出光面。光源位於框架 内,且鄰近於入光面。擴散片位於框架内,且位於出光面 之上方。擴散片具有多個光散射體,以將入射至其表面之 光線散射,其中這些光散射體的材質是雙折射率材料(如 碳酸鋇、碳酸锶、碳酸鋰、碳酸鈉、碳酸鉀、碳酸鎂等), 或是氮化物(如氮化硼等)。 在本發明之一實施例中,上述之光源包括多個發光二 極體或一冷陰極螢光燈管。 * 一 本發明採用雙折射率材料(如碳酸鋇、碳酸鳃、碳酸 1342628 21139twf.d〇c/n 链、碳酸鈉、碳酸鉀、碳酸鎂等),或是氮化物(如氮化 蝴等)作為光散射體,當光散射體應用於多晶片封農時, 可以達到良好的混光效果,當光散射體應用於單—晶片封 裝或與螢光材料搭配時,可以提升發光二極體封裝的亮 度。因此’相較於習知技術而言’本發明之發光二極體封 裝具有較佳的光學特性。此外,本發明之直下式背光模組 與側邊入光式背光模組能夠發出較均勻的面光源。 為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂’下文特舉較佳實施例,並配合所附圖式,作詳細說 明如下。 【實施方式】 圖1是本發明一實施例之發光二極體封裝的示意圖。 請參照圖1 ’發光二極體封裝100包括一承載器11〇、一發 光一極體晶片120以及一光散射材料13〇。在本實施例中 承載器110是一線路板,但是在本發明之其他實施例中承 載器110更可以是一導線架。發光二極體晶片120適於發 出一波長為λ〗之光線,並且發光二極體晶片12〇配置於承 載器110上並且與承載器110電性連接。在本實施例中, 發光一極體晶片120例如是經由多條導線丨4〇來電性連接 於承載器110。光散射材料13〇配置於發光二極體晶片12〇 上。光散射材料130包括多個光散射體132,其適於將入 射至其表面之光線散射。值得注意的是,光散射體132的 材質疋雙折射率材料(如碳酸鋇、碳酸錄、碳酸链、碳酸 21139twf.doc/n 納、碳酸鉀、碳酸鎂等)’或是氮化物(如氮化硼等)。 基於上述之結構’發光二極體晶片120經由承载器110 而受到一電壓差的激發後’發光二極體晶片12〇會放射出 波長為λ!之光線。部分的光線在穿過光散射材料13〇的過 程中,會入射至光散射體132的表面而被散射。如此一來, 經由光散射體132,便能夠提高發光二極體封裝1〇〇的出 光效率。 值知注意的是,若加入一般的光散射體’雖可增加整 體的混光的均勻度,但通常會面臨出光效率下降的箸境。 一般而言’傳統的光散射體將導致出光效率下降約1〇。/〇以 上。本發明所採用之雙折射率材料的光散射材料13〇,不 僅可維持或提昇光效率以及兼顧混光的均勻度。 另外,本實施例之光散射材料130除了可以包括多個 光散射體132外,還可以包括多個波長轉換活化體134 , 波長轉換活化體134的材料其中選自於螢光材料、鱗光材 料、染料所組成之組群中的其中一種。。波長轉換活化體 134適於受到波長為λι之光線的激發,而發出一波長為^ 之光線。當發光·一極體晶片120發出波長λ!之光線後,部 分波長為λ】的光線會直接入射至波長轉換活化體134。另 外部分波長為λ!的光線會入射至光散射體132。接著經由 光散射體132的散射後,再入射至波長轉換活化體134。 然後波長轉換活化體134受到波長為λ!的光線的激發而發 出一波長為λ2之光線。如此一來,經由將兩種波長的光線 混合後,發光二極體晶片120便能夠發出特定顏色的色 21139twf.doc/n ^。舉例而言,當λ!是落在藍光的波長範圍,而心是落在 黃光的波長範圍時,經由適當的混合後,發光二極體 1〇〇便能夠發出白光。 、 再者,上述實施例並非用以限定本發明之發光二極體 晶片的個數。在本發明的其他實施例中,發光二極體封裝 更可以具有兩個以上的發光二極體晶片,其中每個發光二 極體晶適於被激發出不同波長的光線。如此一來,在本發 明之其他實施例中,發光二極體封裝便能夠發出特定顏色 之光線。 值得一提的是’除了圖1所繪示之發光二極體封裝1〇〇 之外,本發明之光散射體132亦可應用於其他不同類型之 發光二極體封裝中,如圖4Α至圖4J所示。 圖2是本發明一實施例之直下式背光模組的示意圖。 請參照圖2,直下式背光模組200包括一燈箱210、多個光 源220以及一擴散片230。這些光源220位於燈箱210内。 在本實施例中,光源220是發光二極體,但是在本發明的 其他實施例中光源220亦可以是冷陰極螢光燈管(Cold Cathode Fluorescent Lamp,CCFL)。擴散片 230 位於燈箱 210内且位於這些光源220上方。擴散片230具有多個光 散射體232,以將入射至其表面之光線散射。光散射體232 的材質是雙折射率材料(如碳酸鋇、碳酸锶、碳酸鋰、碳 酸鈉、碳酸鉀、碳酸鎂等),或是氮化物(如氮化硼等)。 如此一來,當光源220所發出的光線穿過擴散片230 時,部分的光線會直接穿過擴散片230,部分的光線會入 1342628 21139twf.doc/n 射至光散射體232的表面並且被光散射體232的表面散 射。因此,直下式背光模組200可以提供均勻的面光源。 圖3是本發明一實施例之側邊入光式背光模組的示意 圖。請參照圖3’側邊入光式背光模組300包括一框架31〇、 一導光板320、一光源330以及一擴散片340。導光板320 位於框架310内,其中導光板320具有一入光面322以及 一出光面324。光源330位於框架310内,且鄰近於入光 面322。在本實施例中,光源330包括多個發光二極體, 在本發明的其他實施例中光源330亦可以是冷陰極螢光燈 管。擴散片340位於框架310内,且位於出光面324上。 擴散片340具有多個光散射體342,以將入射至其表面之 光線散射,其中這些光散射體的材質是雙折射率材料(如 碳酸鋇、碳酸鰓、碳酸鋰、碳酸鈉、碳酸鉀、碳酸鎂等), 或是氮化物(如氮化蝴等)。 如此一來’當光源330所發出的光線經由入光面322 進入導光板320 ’之後光線自出光面324出射後,部分的 光線會直接穿過擴散片230,部分的光線會入射至光散射 體232的表面並且被光散射體232的表面散射。因此,侧 邊入光式背光模組300可以提供均勻的面光源。 由於本發明之光散射體的材料是採用雙折射率材料 (如喊酸鋇、碳酸錄、碳酸链、碳酸鈉、碳酸钟、碳酸鎂 等)或氮化物(如氮化硼等),因此可以達到良好的混光 效果並且縮短混光距離。是以相較於習知技術而言,本發 明之發光二極體封裝具有較佳的出光效率,並且本發明之 11 i S > 1342628 21139twf.doc/n 直下式背光模組與側邊入光式背光模組能夠發出較均勻的 面光源。 〜雖然本發明已以較佳實施例揭露如上,然其並非用以 限,本發明,任何熟習此技藝者,在不脫離本發明之精神 圍内’當可作些許之更動與潤飾,因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 圖1是本發明—實施例之發光二極體封裝的示意圖。 圖2是本發明—實施例之直下式背光模組的示意圖。 圖3是本發明一實施例之側邊入光式背光模組的 圖。 、 圖4A至圖4J為本發明其他實施例之示意圖。 【主要元件符號說明】 1〇〇 :發光二極體封裝 110 :承載器 120 :發光二極體晶片 130 :光散射材料 Π2 :光散射體 134 :波長轉換活化體 140 :導線 200 :直下式背光模組 210 :燈箱 12 1342628 21139twf.doc/n
220 :光源 230 :擴散片 232 :光散射體 300 :側邊入光式背光模組 310 :框架 320 :導光板 322 :入光面 324 :出光面 3 3 0 :光源 340 :擴散片 342 :光散射體 13
Claims (1)
- 72628 第96128414號 修正曰期 :100.1.17 年月曰 申請專利範圍: 1.一種發光二極體封裝,包括: 一承載器; 補充 本 一發光二極體晶片,配置於該承載器上並且與該承 載器電性連接,其中該發光二極體晶片適於發出一波長 為λι之光線;以及 一光散射材料,配置於該承載器上,該光散射材料 Φ 包括多個光散射體,以將入射至其表面之光線散射,其 中該些光散射體的材質是雙折射率材料。 2·如申請專利範圍第1項所述之發光二極體封裝, 其中該雙折射率材料包括碳酸鋇、碳酸锶、碳酸鋰、碳 酸鈉、峻酸奸、或碳酸鎂。 3. 如申晴專利範圍第1項所述之發光二極體封裝, 其中該光散射材料更包括多個波長轉換活化體,適於受 到波長為之光線的激發,而發出一波長為、之光線。 4. 如申請專利範圍第3項所述之發光二極體封裝, 其中該些波長轉換活化體之材料是選自於螢光材料、磷 光材料、染料所組成之組群中的其中一種。 5. 如申請專利範圍第1項所述之發光二極體封裝, 其中該雙折射率材料包括氮化物。 6.如申請專利範圍第5項所述之發光二極體封裝, 其中該氮化物包括氮化硼。 入一種直下式背光模組,包括: 14 L342628 修正曰势々 一 第96128414號 .· 一燈箱; 多個光源,位於該燈箱内;以及 一擴散片,位於該燈箱内且位於該些光源上方,該 擴散片係由一光散射材料構成,該光散射材料具有多個 光散射體,以將入射至其表面之光線散射,其中該些光 散射體的材質是雙折射率材料。 — 8. 如申請專利範圍第7項所述之直下式背光模組, _ 其巾該雙折射率材料包括碳酸锅 、碳酸錯、碳酸组、磁 酸納、碳酸鉀、或碳酸鎂。 " 9. 如申請翻範圍第7項所述之直下式背光模組, 其中該些光源是發光二極體或冷陰極螢光燈管。 10. 如申請專利範圍第7項所述之直下式背光模 組,其中該雙折射率材料包括氮化物。 η·如申請專利範㈣U)項所述之直下式背光模 組,其中該氮化物包括氮化硼。 12.種側邊入光式背光模组,包括: —框架; V光板,位於該框架内,該導光板具有 山小π _ 以及一出光面 二光源,位於該框架内’且鄰近於該入光面;以及 二擴散片,位於該框架内,且位於該出光面之上 二2散片係由-光散射材料構成,該光散射材料亘 有夕個光散射體’以將入射至其表面之光線散射,其 15 042628 第96丨28414號 修正曰期 ]00.].17 年月 EJ 梦屋^:本補充 该些光散射體的材質是雙折射率材料。 “ 13.如申請專利範圍第12項所述之側邊 核組’其令該雙折射率材料包括嫂酸鎖、㈣i二酸 鋰、碳酸鈉、碳酸鉀、或碳酸鎂。 〜反· 14.如申請專利範圍第12項所述之側邊入光式背光 模組,其t該光源包括多個發光二極體或一冷陰極螢光 燈管。 右° 15·如申請專利範圍第12項所述之側邊入光式背光 模組’其中該雙折射率材料包括氮化物。 16.如申請專利範圍第15項所述之側邊入光式背光 模組’其中該氮化硼包括氮化硼。16
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TW096128414A TWI342628B (en) | 2007-08-02 | 2007-08-02 | Light emitting diode package, direct type back light module and side type backlight module |
US11/935,412 US20090034288A1 (en) | 2007-08-02 | 2007-11-06 | Light emitting diode package, direct type backlight module and edge type backlight module |
JP2007316339A JP4846700B2 (ja) | 2007-08-02 | 2007-12-06 | ダイレクト型バックライトモジュールおよびエッジ型バックライトモジュール |
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JP2009038334A (ja) | 2009-02-19 |
US20090034288A1 (en) | 2009-02-05 |
TW200908365A (en) | 2009-02-16 |
JP2011249855A (ja) | 2011-12-08 |
JP4846700B2 (ja) | 2011-12-28 |
JP5460665B2 (ja) | 2014-04-02 |
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