TW200420975A - Phosphor blends and backlight sources for liquid crystal displays - Google Patents

Phosphor blends and backlight sources for liquid crystal displays Download PDF

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TW200420975A
TW200420975A TW092125345A TW92125345A TW200420975A TW 200420975 A TW200420975 A TW 200420975A TW 092125345 A TW092125345 A TW 092125345A TW 92125345 A TW92125345 A TW 92125345A TW 200420975 A TW200420975 A TW 200420975A
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light
emitting
liquid crystal
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spectrum
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TWI282883B (en
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Anany Achyut Setlur
Alok Mani Srivastava
Holly Ann Comanzo
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Gen Electric
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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
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    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • C09K11/77—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals
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    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • C09K11/77—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7737—Phosphates
    • C09K11/7738—Phosphates with alkaline earth metals
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    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
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    • C09K11/7737—Phosphates
    • C09K11/7738—Phosphates with alkaline earth metals
    • C09K11/7739—Phosphates with alkaline earth metals with halogens
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    • C09K11/77—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals
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    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source

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  • Crystallography & Structural Chemistry (AREA)
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  • Optics & Photonics (AREA)
  • Luminescent Compositions (AREA)
  • Liquid Crystal (AREA)
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Description

玖、發明說明： 【發明所屬之技術領域】 本發明首先係構想或簡化成實施美國國家標準及技術協 會（Untied States National Institute of Standards and
Technology)所頒佈之章程 7〇 NANN8H4022。 【先前技術】 本發明大體上有關一種液晶顯示器C，lcd”）及其背光 源。本發明尤其有關一種用於彩色LCD之改良背光源使用 的璃:換合物。 LCD廣泛使用於電子工業產品，由行動電話、計算機、 及手錶，以至電腦及汽車中之資訊顯示器。lCD在諸如尺 寸、價袼、設計、變通性、可信度、及電力消耗之領域中， 有卉夕超越同等顯示技術的優點。此等優點使得LCD成 為電子裝置設計者所泛用之選擇。 、广曰曰材料之特徵在於通經液晶薄層之透光度可藉由施加 电場於垓材料上而改變。[⑶利用此種性質。 LCD之必要成份係為容|於兩片由諸如玻璃或有機聚合 物之材料所製得的透明板之間的薄層液晶材料。該透明板 之内表面係配置有透明電極，其界定欲顯示之圖案、文字 或影像。該透明；^t 卜表面配置有偏光板。於一對對鹿之 電極兩端施加電壓時 亥偏光透鏡之相對取向，而阻斷 先線或使之通經該組合 哭夕一德本^ 件兩电極重豐之位置界定該顯示 、°亥顯不益、係稱為被動陣列型顯示器。主動陣 列型顯示器中，薄滕曾曰-, 王勖陣 專臈電日日體（TFT)矩陣係配置於一
O:\87\87802.DOC 200420975 上’以作為開關元件。共用電極係配置於第二透明板上。 當特jTFT經定址以連通時，介於TFT與共用電極間之液晶 材料夂成非扭轉’而使光線通過。施加經準確控制之電麼 τ則空制该像素上之亮度。紅色、綠色及藍色濾色 、器係配置於㈣像素，以在使隸控制之電隸準啟動所 k擇之TFT時’自各組三個TFT產生不同色澤及色彩。 ，就具有高亮度之顯示裝置而言，於透明板相與觀測者相 對^後方配置背光源。此時一般使用小型螢光燈或多個發 光-極體("LED”)。該種發射寬幅光譜之光源與滹色哭姓 合1使特定光色通經該像素。美國專利第5,9似92 = 揭不之一發射白光的背光系統係包括發射波長範圍為3 6 〇 至彻奈廿米之藍光或紫外線（，，uv”）轄射的半導體咖，結合 有七射汽光之Y3Al5〇i2:Ce碟層。然而，該系統無能量效率， 因為Y3Al5〇12:Ce之發射光譜並非集中於_般使 的特定波長範圍（約4似46時米、約⑽至別奈米 630至680奈米），如圖1所示。 因此，仍需要提供一種供LCD使用之更有效率背光系 統。亦極期望提供改良型彩色LCD使用之碟摻合物。 【發明内容】 +本發明提供—種供LCD中之背光源使用的碟組合物。該 破組合物藉由更強地發射在一般藍色、綠色及紅色 之波長範圍内的可見光，而提供改良之能量利用率Γ「光」 2電磁輻射」用辭在此可交換使用以表示具有佳於約· 不只至約770奈米範圍内之波長的電磁輻射。
O:\87\87802.DOC 200420975 本發明磷組合物係包含至少一種發射藍光之磷、至少一 種發射綠光之磷、及至少一種發射紅光之碟。該發射藍光 之磷係選自由（Sr，Ca，Ba，Mg)10(P〇4)6(F，C1，Br，〇H):Eu2+(w 下亦稱為「SECA」）；（Ba，Sr，Ca)MgAl10〇17:Eu2+(以下亦稱 為「BAM」），（Sr，Ca)10(P〇4)6.nB2〇3:Eu2+，其中 〇<η<1 ; 2Sr0.0.84P205.0.16B203:Eu2+ ； Sr2Si308.2SrCl2:Eu2+ ； Ba3MgSi208:Eu2+; Sr4Al14025:Eu2+(以下亦稱為「SAE」）；
BaAl8013:Eu2+ ;及其混合物所組成之群。發射綠光之填係 選自由作狂，81*，。&)]^八110〇17$112+，1^112+(以下亦稱為「3人^111」)； (Ba，Sr，Ca)Al2〇4.Eu ; (Y，Gd，Lu，Sc，La)B〇3:Ce3+，Tb3+; (Ba，Sr，Ca)2Si〇4:Eu2+; (Ba，Sr，Ca)2(Mg，Zn)Si207:Eu2+; (Sr5Ca，Ba)(Al，Ga，In)2S4:Eu2+; (Y,Gd,Tb,La,Sm,Pr,Lu)x(Al,Ga,Iii)y〇i2:Ce3+，其中 x係由約 2·8至 3且包括 3，且 y係約 4.9至約 5.1; (Sr，Ca，Ba，Mg，Zn)2P207: £112 +，^1112+(以下亦稱為「8??」）；（(^，81^&，％§)1()(?〇4)6 (?，。1此，011)出112+，％112+(以下亦稱為「11八1^0」）；（。&，31*，；63)8 (以§/11)(8104)4((：1/)2$112+，以112+(以下亦稱為「〇：八81」）； 及其混合物所組成之群。發射紅光之磷係選自由 (Gd，Y，Lu，La)203:Eu3+，Bi3+; (Gd，Y，Lu，La)202S:Eu3+，Bi3+; (Gd，Y，Lu，La) V04：Eu3 + 5Bi3 + ; SrS:Eu2+; SrY2S4：Eu2+; CaLa2S4:Ce3 + ； (Ca?Sr) S:Eu2+;3.5MgO.0.5MgF2.GeO2:Mn4+(以下亦稱為「MFG」）； (6&，81*，€&)%§卩2〇7$112+，]^112十；及其混合物所組成之群。 本發明之一態樣中，一 LCD係包括一背光源，此背光源 係包含至少一種於至少由約300奈米至約450奈米範圍内發 光之光源及一光轉換磷組合物，該組合物係包含至少一種
O:\87\87802.D〇C 200420975 及一發射紅光之磷。該 射之電磁輻射且發射可 發射藍光之磷、一發射綠光之磷、及 磷組合物係配置以接收由該光源發射 見光。 該鱗組合物係配置於該光源與 本發明另一態樣中 LCD之一液晶材料層之間。 、Λ f精讀以下本發明詳述及附圖之後，即可明瞭本發明其 他特色及優點，圖中相同編號係表示相同元件。 【實施方式】 本發明提供一種供LCD中之背光源使用的磷組合物。 本發明磷組合物係包含至少一種發射藍光之鱗、至少一 種發射綠光之鱗、及至少一種發射紅光之磷。該發射藍光 之磷係選自由（Sr5Ca，Ba，Mg)10(P〇4)6(F，Cl，Br，OH):Eu2+ ; (Ba，Sr，Ca)MgAl10O17:Eu2+; (Sr，Ca)10(P〇4)6.nB2〇3:Eu2+，其 中 〇<η<1 ; 2SKX0.84P2〇5.0.16B2O3:EU2+; Sr2Si308e2SrCl2:Eu2+ ; Ba3MgSi208:Eu2+; Sr4Al14025:Eu2+; BaAl8〇13:Eu2+;及其混 合物所組成之群。發射綠光之磷係選自由（Ba，Sr，Ca)
MgAl10O17:Eu2+，Mn2+; (Ba，Sr，Ca)Al204:Eu2+; (Y，Gd，Lu，Sc，La) B03:Ce3+5Tb3+; (Ba?Sr?Ca)2Si04：Eu2+; (Ba?Sr?Ca)2(Mg,Zn)Si207:Eu2+; (Sr，Ca，Ba)(Al，Ga，In)2S4:Eu2 + ; (Y，Gd，Tb，La，Sm，Pr，Lu)x (Al，Ga，In)y012:Ce3+，其中x係由約2.8至3且包括3，且y係約 4.9至約 5·1; (Sr，Ca，Ba，Mg，Zn)2P207:Eu2+，Mn2+; (Ca，Sr，Ba，Mg)10 (P04)6(F?Cl5Br,0H):Eu2+5Mn2+; (Ca,Sr?Ba)8(Mg?Zn)(Si〇4)4(Cl5F)2： Eu2 +，Mn2+ ;及其混合物所組成之群。發射紅光之磷係選自 由（Gd，Y,Lu，La)203:Eu3 +，Bi3 + ; (Gd，Y，Lu，La)202S :Eu3 +，Bi3 + ; O:\87\87802.DOC -9- 200420975 (Gd5Y9Lu9La)V04：Eu3+5Bi3+； SrS:Eu2+; SrY2S4：Eu2+; CaLa2S4-Ce3+· (Ca，Sr)S:Eu2 + ; 3.5MgO.0.5MgF2.Ge〇2：Mn4 + . (Ba Sr Ca)
MgP2〇7:Eu2+，Mn2+;及其混合物所組成之群。已知前文揭示 之磷的化學組成可稍稍偏離所示之化學計量組成，因為碟 主體晶格可容納少量晶格缺陷。該磷係涵蓋於本發明範圍 内。此等填可藉在約300奈米至約450奈米波長範圍内之電 磁輻射激發，而於藍色、綠色、或紅色可見光區内有效地 發光。因此，此等特定磷之摻合物較佳係與至少一種在約 300奈米至450奈米波長範圍内發光之LED結合使用，以於 LCD提供背光源。 、 本發明之一態樣中，該摻合物之磷係經選擇，使得其複 合發射光譜於該LCD使用之濾色器（例如藍色、綠色及紅色 濾色器）的特定波長範圍内具有極高強度。例如，許多市售 渡色器材料係設計穿透波長44()至46()奈米（藍光）、55〇至^ 奈米（綠光）、及630至680奈米（紅光）之光。 圖2及3出示由（Sr〇 79Eu〇 ιΜη〇為〇 "Μ办、咖八及 MFG，及CASI、SECA、與MFG所組成之磷摻合物於藍色、 ，色及紅色濾'色器之波長範圍的發射光譜。該磷摻合物係 藉由波長約405奈米之發射藍光的LE〇激發。 轉明摻合物之磷可藉任何機械方法混合，包括（不限制） 於南速摻合器或螺條摻合器中攪拌或摻合。可結合該磷， 並於球磨機、錘磨機或喷磨機中_㈣碎。誠可將鱗教 徑縮小至4微米以下，以2微米以下為佳。 該石粦摻合物可分埒杏 放於3貝透明之樹脂中，光轉換月係由
O:\87\87802.DOC 200420975 該混合物乘】p 、寸，且固化以配置於該背光與該液晶材料層之 間。「實曾、岙 、 」一辭意指使至少8〇百分比之可見光波長的 光通經約1臺半μ ώ ^ ^ 曰 毛水厗度。適於製造光轉換片之樹脂的實例係包 不限於）丙烯酸樹脂、環氧樹脂、聚矽酮、及 官能仆夕$ & ^ 4 衣氧树月曰。該光轉換片亦可包含粒徑如同該磷摻 合物的=光材料粒子，諸如Ti〇2或Μ"3。該光轉換片可藉 可L田之方法製得，諸如鑄造、塗敷、輥塗、喷灑於一 基材上等。 ' ' "圖4透射地出示LCD i 0之個別組件，該LCD使用本發明背 光照明具體實例。LED 20與其所連接之電路係配置於托盤 25之側^22上。托盤25具有反射性底面24，用以向上反射 :LE: 20所發射之電磁輻射。包含本發明磷摻合物粒子(分 散於貫f透明之樹脂中）之光轉換片3G係配置於把盤25 上。光轉換片30中之磷粒子接收且吸收由咖2〇所發射及 :表面24反射之電磁輕射，發射強度集中於可見光波長之 【光、、綠光及紅光區的光線。散光層（未示）可配置於托盤乃 共光轉換層3〇之間。散光層一般（至少於—表面上）具有高突 特徵，諸如凸點或波紋條紋。第一偏光板4〇係配置於光轉 換層30上。液晶材料層55(諸如扭轉向列液晶）係容裝於兩透 明板50與60之間。薄層55與透明板5〇及6〇之組合件係配置 於該第一偏光板40上。透明板5〇與6〇與液晶層叫目鄰之表 面具有經圖案化之電極’當該電極間施加電料，於該液 晶材料上賦予像素矩陣。藍色、綠色及紅色遽色器係配置 於-透明板上像素之位置’以控制穿透各個像素之光色。
O:\87\87802.DOC -11 - 200420975 可包 第一偏光板7 0係配置於該液晶顯示器組合件上。此 括其他選擇層，諸如漫射器或保護層。 透明板50及60可包括玻璃或透明塑膠板或薄膜。 、、非限制 J膠材料有聚對苯二甲酸乙二醇酯（"PET”）、聚丙婦酸⑪ ♦兔酸酯、聚矽酮、環氧樹脂、經聚矽酮官能 此化之％氧樹 月曰、聚酯、聚醯亞胺、聚醚醯亞胺、PES、pen、取n # λΚ止伯烯、 或聚（環烯烴）。該塑膠板或薄膜較佳係塗覆擴散障辟冷 至少一表面上，以防止反應性化學物質（包括但不限於氧 水蒸汽、含硫化合物、及酸氣體）自環境擴散進來。擴2障 土塗層可包括至少一無機材料與至少一有機材料之交秩層 的多層塗層。該多層擴散障壁塗層之無機材料一般係選^ 由金屬（金屬層厚度係選擇使該層實質透明）、金屬碳化ζ 金屬氧化物、金屬氮化物、金屬氧碳化物、 & ,厌虱化物所組成之群。無機層可藉物理氣相沉積、化學 氣相沉積、離子束增強沉積、濺鍍、或電漿增強化學氣： 沉積來沉積於該塑膠板或薄膜上。各無機層之厚度—^係 約:，米至約奈米。多層擴散障壁塗層之有機材料：般 係選自由聚丙烯酸酯（諸如丙烯酸、 Τ丞内烯酸、此等酸之 酉旨、或烯聚合物或共聚物；聚（氣乙稀） 乙稀）；聚（乙烯醇）；乙烯醇與乙二搭之共聚物；ΡΕΤ對 伸芳基、及自環烯烴與其衍生物所彳m合物（諸如 專利第4,540,763號及第5,185,391號所揭_ ^ ? I尸坏揭不之聚（ 烯））。該有機層之厚度一般係由約丨夺 土衣 田U不木至約1〇〇〇〇 約10奈米至約5000奈米為佳。 /、y、
O:\87\87302.DOC -12 - 200420975 '用led作為月光之光源的具體實例中，該實質透明 j月曰4掺合物、及選擇性散光材料之混合物係成形為光 轉換鑄膜，配置於各LED之半導體發光元件旁，以接收其 所發射之光。 本叙明圖5所示之另一具體實例中，提供LCD 10背光之光 、皋係匕括有機發光裝置（"〇ELD„) 8〇。該⑽一般包括 配置於兩電極83與87之間的有機電致發光（”el”）層Μ，該 有機EL材料可在電極83與87兩端施加電壓時發光。尚可將 電極83舆87及有機發光層85之組合體配置或形成於一由玻 璃或有機聚合物製得之實質透明基材上。其中一電極卜般 為陽極）係由實質透日月導電性氧化物（諸如氧化銦錫（IT0)、 氧化錫、氧化銦、氧化辞、氧化姻辞、氧化锡錫、或其混 合物）製得’配置於該有機發光層與該液晶層之間，使得來 自有機lx光層之光可穿透進人液晶層。有機此材料之非限 制實例有聚合物、共聚物、聚合物之混合物、及低分子量 有機分子，皆具有不飽和鍵結。該材料具有非定域π + 系統，使得該聚合物鏈或有機分子具有支持正及負電荷載 流子之高移動性的能力。適當之虹聚合物有聚（n_乙烯基叶 嗤）HWK’’’發射波長約380至5〇〇奈米之紫光至藍光）；聚（炫 基苐），諸如聚（9,9_二己基g)(4i〇_55〇奈米），聚（二辛其 第）(波峰EL發射波長436奈米），或聚{9,9_雙（3,6_二氧錢 基）务2,7_二基_〇至55G奈米）；聚（對_伸苯旬街生物， 諸如聚（2-十二破氧-i，4_伸苯基）(4〇〇-55〇奈米此等聚合物 之混合物或以此等聚合物及其他聚合物中之一或多種為底
O:\87\87802.DOC -13- 200420975 質的共聚物可用以調整發射光之色彩。 另-類適當之EL聚合物係為聚石夕炫。聚石夕院係為經各種 院基及/或芳基側基所取代之直鏈石夕_主鏈聚合物。其係為在 聚合物主鏈丨具有非定域σ-共扼電子的擬單維材料。聚石夕 烧之實例有聚（二正了基石夕烧）、聚（二正戊基石夕烧）、聚（二 -正己基矽烷）、聚（甲基苯基矽烷）、及聚（雙（對-丁基苯基） 矽烷}，揭示於Η· Suzuki等，"
Electroluminescence From Polysilanes-, 331 Thin Solid Films 64-70 (1998)。此等聚矽烷發射波長由約32〇奈米至約 420奈米之光。 亦可使用分子量低於約5〇〇〇而由大量芳族單元製得之有 機材料。該材料之實例有^，^三{n作二苯基胺基苯基）苯 基胺基}苯，發射波長為至5〇〇奈米之光。該有機虹層亦 可自低分子量有機分子製備，諸如苯基蒽、四芳基乙烯、 香豆素、紅螢烯、四苯基丁二烯、蒽、二萘嵌苯、暈苯、 或八衍生物。此等材料通常係發射最大波長約奈米之 光另一種適當之材料係為低分子量金屬有機錯合物，諸 如乙醯基丙酮酸-鋁、-鎵、及_銦（其發射波長範圍415奈米 至457奈米之光）、鋁_(皮考基甲基酮）_雙{2,6-二（第三丁基） 酚基}或飢-(4-甲氧基_皮考基曱基酮 > 雙（乙醯基丙_酸 根）（於420至433奈米範圍内發光）。 前述之光轉換片係配置於該有機發光層舆該液晶層之 間，將該有機EL層所發射之光轉換成在濾色器之波長範圍 内具有實質強度之光。
O:\87\87802.DOC -14- 200420975 已於4文揭示本發明特定較佳具體實例，但熟習此項 技2者已知可在不偏離申請專利範圍所界定之本發明精神 及乾圍的情況下，進行許多修飾、置換或改變。 【圖式簡單說明】 圖1係為美國專利第5,982,092號所揭示之先前技術LCD 月光中所使用之類型的Y3Al5〇12:ce3+磷之發射光譜。 圖 2 出示由（SrowEuo.iMnojMgo.nhP^、SECA及 MFG所 組成之磷摻合物的發射光譜。 圖3出示由CASI、SECA、及MFG所組成之磷摻合物的發 射光譜。 圖4透視地出示一 LCD之個別組件，使用包括LED及一本 發明光轉換層的背光照明系統。 圖5透視地出示一LCD之個別組件，使用包括一有機電致 發光裝置及一本發明光轉換層的背光照明系統。 【圖式代表符號說明】 10 LCD 20 LED 22 側牆 24 反射性底面 25 托盤 30 光轉換片 40 第一偏光板 50, 60 透明板 55 液晶材料層 O:\87\87802.DOC -15- 200420975 70 第二偏光板
80 OELD 83, 87 電極 85 有機電致發光（f’EL”）層 O:\87\87802.DOC -16-

Claims (1)

  1. 200420975 拾、申請專利範園： 1 · 一種供液晶顯示器（LCD)之背光源使用的磷組合物，該 填組合物係包含至少一種發射藍光之磷、至少一種發射 綠光之磷、及至少一種發射紅光之磷；其中該至少一種 發射藍光之磷係選自由（Sr，Ca，Ba，Mg)10(P〇4)6 (F5Cl,Br)OH):Eu2+；Ba5Sr?Ca)MgAl1〇〇17：Eu2+；(Sr5Ca)1〇(P04)6· nB203:Eu2+，其中 0<η<1 ; 2Sr0.0.84P205.0.16B203: Eu2+; Sr2Si308.2SrCl2:Eu2+; Ba3MgSi208:Eu2+; Sr4Al14〇25: Eu ，BaAl8013:Eu2+ ;及其混合物所組成之群；該至少 一種發射綠光之鱗係選自由（Ba，Sr，Ca)MgAl1Q〇i7: Eu2+，Mn2+; (Ba，Sr，Ca)Al204:Eu2+; (Y，Gd，Lu，Sc，La)B03:Ce3+，Tb3+; (Ba，Sr，Ca)2Si04:Eu2+; (Ba，Sr，Ca)2(Mg，Zn)Si207:Eu2+; Sr，Ca，Ba) (Al，Ga，In)2S4:Eu2+; (Y，Gd，Tb，La，Sm，Pr，Lu)x(Al，Ga，In)y012:Ce3+ ’其中x係由約2.8至3且包括3，且y係約4.9至約5.1; (Sr，Ca，Ba，Mg，Zn)2P2〇7:Eu2+，Mn2+; (Ca，Sr，Ba，Mg)1G(P〇4)6 (F，Cl，Br，OH):Eu2+，Mn2+; (Ca，Sr，Ba)8(Mg，Zn)(Si04)4(Cl，F)2: Eu2，Mn2+ ;及其混合物所組成之群；該至少一種發射 紅光之磷係選自由（Gd，Y，Lu，La)2〇3:Eu3+，Bi3+; (Gd，Y，Lu，La)202S: Eu ,Βι ； (Gd?Y5Lu?La)V〇4：Eu3+,Bi3+； SrS:Eu2+; SrY2S4:Eu2+; CaLa2S4：Ce ; (Ca5Sr)S:Eu2+； 3.5Mg〇.〇.5MgF2.Ge02：Mn4+; (Ba，Sr，Ca)MgP2〇7.’Eu2+，Mn2+;及其混合物所組成之群。 2·如申請專利範圍第i項之鱗組合物，其中該碟組合物係 至少吸收該背光源所發射之第—丨譜的光之一部分，且 發射具有異於該第一光譜之第二光譜的光。 O:\87\87802.DOC 200420975 3 ·如申請專利範圍第2項之磷組合物，其中該第二光譜於 約440至460奈米、約550至570奈米及約630至680奈米之 波長區中具有高於可見光譜之至少另一區中的強度。 4. 如申請專利範圍第1項之磷組合物，其中該磷組合物係 包含（Sro.wEuuMno.iMgo.nhP】©?、（Sr，Ca，Ba，Mg)10 (P04)6(F，Cl，Br，〇H):Eu2+、及3.5MgO.0.5MgF2.GeO2:Mn4+。 5. 如申請專利範圍第1項之磷組合物，其中該磷組合物係 包含（Ca，Sr，Ba)8(Mg，Zn)(Si04)4(Cl，F)2:Eu2+，Mn2+ 、 (Sr，Ca，Ba，Mg)10(P〇4)6(F，Cl，Br，OH):Eu2+、及3.5MgO.0.5MgF2. Ge02:Mn4+。 6· —種供LCD使用之背光照明系統，包括： 一背光源’發射具有至少在約300奈米至約450奈米範 圍内之第一光譜的光；及 一鱗組合物，其包含至少一種發射藍光之鱗、至少一 種發射綠光之磷、及至少一種發射紅光之磷；其中該至 少一種發射藍光之磷係選自 由 (Sr，Ca，Ba，Mg)10(P〇4)6(F，Cl，Br，OH):Eu2+ ; Ba，Sr，Ca)MgAl10 017:Eu2+ ; (Sr，Ca)10(P〇4)6.nB2O3:Eu2+，其中 〇<η<ι ; 2Sr0.0.84P2〇5-〇.16B2〇3：Eu2+ ； Sr2Si308.2SrCl2:Eu2+ ； Ba3MgSi2〇8：Eu ，Sr4Ali4〇25:Eu2+; BaAl8〇13:Eu2+ ;及 其混合物所組成之群；該至少一種發射綠光之鱗係選自 由（Ba，Sr，Ca)MgAl10〇17:Eu2+，Mn2+; (Ba，Sr，Ca)Al2〇4:Eu2+; (Y，Gd，Lu，Sc，La)B〇3:Ce3 +，Tb3 + ; (Ba5Sr?Ca)2Si04:Eu2+; (Ba，Sr，Ca)2(Mg，Zn)Si2〇7:Eu2+; (Sr，Ca，Ba)(Al，Ga，In)2S4:Eu2+; O:\87\87802.DOC -2- 200420975 (Y，Gd，Tb,La，Sm，Pr，Lu)x(Al，Ga，In)y〇i2:Ce3+，其中 χ係由 約2.8至3且包括3 ，且y係約4.9至約5.1; (Sr，Ca，Ba，Mg，Zn)2P207:Eu2+，Mn2+; (Ca，Sr，Ba，Mg)10(PO4)6 (F，Cl，Br，OH):Eu2+，Mn2+; (Ca，Sr，Ba)8(Mg，Zn)(Si04)4(Cl，F)2: Eu2+，Mn2 + ;及其混合物所組成之群；該至少一種發射紅 光之磷係選自由（Gd，Y，Lu，La)203:Eu3+，Bi3+; (Gd，Y，Lu，La)202S: Eu3+，Bi3+; (Gd，Y，Lu，La)V〇4:Eu3+，Bi3+; SrS:Eu2+; SrY2S4:Eu2+; CaLa2S4：Ce3+; (Ca?Sr)S:Eu2+; 3.5MgO.0.5MgF2.GeO2:Mn4+; (Ba，Sr，Ca)MgP2〇7:Eu2+，Mn2+ ;及其混合物所組成之 群；其中該鱗組合物係配置成至少吸收該第一光譜之光 的一部分，且發射具有異於該第一光譜之第二光譜的 光。 7·如申請專利範圍第6項之背光照明系統，其中該第二光 譜於約440至460奈米、約550至570奈米及約630至680 奈米之波長區中具有高於可見光譜之至少另一區中的 強度。 8·如申請專利範圍第6項之背光照明系統，其中該磷組合 物係包含价().7$11().11^11(),1吨().11)2?2〇7、（81^&，：^，％§)10 (P04)6(F，Cl，Br，0H):Eu2+、及3.5MgO.0.5MgF2.GeO2:Mn4+。 9.如申請專利範圍第6項之背光照明系統，其中該磷組合 物係包含（Ca，Sr，Ba)8(Mg，Zn)(Si04)4(Cl，F)2:Eix2+，Mn2+、 (Sr，Ca，Ba，Mg)1(}(p〇4)6(F，cl，Br，〇H):Eu2+、及 3 5Mg〇 〇.5MgF2.Ge02:Mn4、 1 〇·如申請專利範圍第6項之背光照明系統，其中該磷組合 O:\87\87802.DOC 11. 12. 13. 14. 15. 16. 17. 物係分散於一實質透明樹脂中，以形成一 合物係形成一光轉換層，配置於該背光源 液晶材料層之間。 混合物，該混 與該LCD之一 如:請專利範圍第H)項之背光照明系統，其中該實質透 月树月曰係包含至少一種選自由丙烯酸酯樹脂、環氧樹 脂1石夕_、及、經聚石夕嗣_官能化之環氧樹脂所組成之 群的材料。 如申請專利範圍第10項之背光照明系統，其中該混合物 尚包含散光材料粒子。 如申請專利範圍第6項之背光照明系統，其中該背光源 係至少包含一發光二極體（LED)。 如申請專利範圍第i 3項之背光照明系統，其中該混合物 係配置於該LED之發光元件上。 如申請專利範圍第6項之背光照明系統，其中該背光源 係至少包括一有機電致發光裝置（〇ElD)。 如申請專利範圍第15項之背光照明系統，其中該〇ELD 係包括配置於兩電極之間的有機發光層，而該有機發光 層係於該電極兩端施加電壓時發射光線。 一種液晶顯示器，包括： (a) —月光照明糸統，包括·· (1) 一背光源，發射具有至少介於約3〇〇奈米至約45〇 奈米範圍内之第一光譜的光；及 (2) —磷組合物，其包含至少一種發射藍光之磷、至 少一種發射綠光之磷、及至少一種發射紅光之 O:\87\87S02.DOC -4 - 200420975 磷；其中該至少一種發射藍光之磷係選自由 — (Sr，Ca，Ba，Mg)10(PO4)6(F，Cl，Br，OH):Eu2+ ; (Ba，Sr*，Ca) — MgAl10O17:Eu2+ ; (Sr，Ca)10(PO4)6.nB2〇3:Eu2+，其 中 0<η<1 ; 2Sr0.0.84P205.0.16B203:Eu2+ ; Sr2Si308. 2SrCl2：Eu2+； Ba3MgSi208:Eu2+； Sr4Al14〇25：Eu2+； BaAl8013:Eu2+ ;及其混合物所組成之君羊；該至少 一 種發射綠光之磷係選自 由 (Ba，Sr，Ca)MgAl10O17:Eu2+，Mn2+; (Ba，Sr，Ca)Al204:Eu2+; (Y，Gd，Lu，Sc，La)B03:Ce3+，Tb3+; (Ba，Sr，Ca)2Si04:Eu2+;. (Ba，Sr，Ca)2(Mg，Zn)Si207:Eu2+; (Sr，Ca，Ba)(Al，Ga，In)2S4:Eu2+; (Y，Gd，Tb，La，Sm，Pr，Lu)x(Al，Ga，In)y012:Ce3+，其中 x 係由約2 · 8至3且包括3，且y係約4 · 9至約5 · 1; (Sr，Ca，Ba，Mg，Zn)2P2〇7:Eu2+，Mn2+; (Ca，Sr，Ba，Mg)10 (P04)6(F，Cl，Br，0H):Eu2+，Mn2+; (Ca，Sr，Ba)8(Mg，Zn) (Si04)4(Cl，F)2:Eu2+，Mn2+;及其混合物所組成之 群；該至少一種發射紅光之構係選自由 0 (Gd，Y，Lu，La)203:Eu3+，Bi3+; (Gd，Y，Lu，La)202S:Eu3+，Bi3+; (Gd5Y5Lu5La)V04：Eu3 + ?Bi3 + ; SrS:Eu2+; SrY2S4：Eu2+; CaLa2S4：Ce3+; (Ca?Sr)S:Eu2+; 3.5MgO.0.5MgF2.GeO2：Mn4+; (Ba，Sr，Ca)MgP207:Eu2+，Mn2+ ;及其混合物所組成 之群；其中該磷組合物係配置成至少吸收該第一 光譜之光的一部分，且發射具有異於該第一光譜 之第二光譜的光；及 一液晶材料，用以接收具有該第二光譜之光。 O:\87\87802.DOC 200420975 1 8 ·如申明專利範圍第17項之液晶顯示器，其中該液晶材料 -係配於一對第一及第二實質透明板之間，該板與該液曰曰曰· 材料相鄰之表面各具有電極，使得兩電極之重疊區界定 該液晶顯示器之多個像素；且每三個相鄰像素配置有使 藍光、綠光及紅光通經該液晶材料之濾色器。 19·如申請專利範圍第17項之液晶顯示器，其中該第二光譜 於約440至460奈米、約550至57〇奈米及約63〇至68〇奈米 之波長區中具有高於可見光譜之至少另一區中的強度。 20·如申請專利範圍第17項之液晶顯示器，其中該磷組合物 係包含（81*0.7$110.1%11。.1^^().11)21>2〇7、（心,〇^，;^，]^幻1〇 (P〇4)6(F，Cl，Br，〇H):Eu2+、及UMgo 〇 5MgF2 Ge〇2:Mn4+。 21. 如申請專利範圍第17項之液晶顯示器，其中該磷組合物 係包含（Ca，Sr，Ba)8(Mg，Zn)(Si〇4)4(C1，F)2:Eu2+，Mn2+、 (Sr，Ca，Ba，Mg)i〇(P〇4)6(F5Cl，Br，〇H):EU2+、及 3.5Mg0· 〇.5MgF2.Ge02:Mn4+。 22. 如申請專利範圍第丨7項之背光照明系統，其中該磷組合 物係分散於一實質透明樹脂中，以形成一混合物，該混參 合物係形成一光轉換層，配置於該背光源與該LCD之一 液晶材料層之間。 23·如申請專利範圍第22項之液晶顯示器，其中該實質透明 樹脂係包含至少一種選自由丙烯酸酯樹脂、環氧樹脂、 聚矽_、及經聚矽酮-官能化之環氧樹脂所組成之群的 材料。 申明專利範圍第22項之液晶顯示器，其中該混合物尚 O:\87\87802.DOC -6 - 200420975 包含散光材料粒子。 _ 25_如申請專利範圍第1 7項之液晶顯示器，其中該背光塬係 至少包含一LED。 26·如申睛專利範圍第25項之液晶顯示器，其中該混合物係 配置於該LED之發光元件上。 27·如申請專利範圍第17項之液晶顯示器，其中該背光源係 至少包括一 OELD。 28·如申請專利範圍第27項之液晶顯示器，其中該〇ELD係 包括配置於兩電極之間的有機發光層，而該有機發光> 係於該電極兩端施加電壓時發射光線。 O:\87\87802.DOC
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CN100426072C (zh) 2008-10-15
US20040056990A1 (en) 2004-03-25
TWI282883B (en) 2007-06-21
US6809781B2 (en) 2004-10-26
KR20040026628A (ko) 2004-03-31
JP2004168996A (ja) 2004-06-17

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