TWI699564B - 含量子點之構件、薄片構件、背光裝置及顯示裝置 - Google Patents
含量子點之構件、薄片構件、背光裝置及顯示裝置 Download PDFInfo
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- TWI699564B TWI699564B TW106139659A TW106139659A TWI699564B TW I699564 B TWI699564 B TW I699564B TW 106139659 A TW106139659 A TW 106139659A TW 106139659 A TW106139659 A TW 106139659A TW I699564 B TWI699564 B TW I699564B
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Abstract
Description
本發明係關於一種含量子點之構件、薄片構件、背光裝置、及顯示裝置。
例如,於下述專利文獻1中揭示有一種與使用螢光體薄片之顯示裝置相關之發明。
於專利文獻1中揭示有一種於螢光體薄片之兩側配置有障壁層之顯示裝置。
藉由設置障壁層,期待可保護螢光體免受升溫或濕氣、其他有害之環境條件之傷害。
專利文獻1:日本專利特開2011-13567號公報
然而,因設置障壁層而零件件數增多,又,薄片構件之厚度增大。
本發明係鑒於該情況而完成者,目的在於提供一種未特別設置障壁層便可有效地抑制發光強度之經時變化之含量子點之構件、薄片構件、背光裝置、及顯示裝置。
本發明之含量子點之構件之特徵在於:其係量子點分散於樹脂中而成之構件,且於上述構件之表面未設置障壁層。
於本發明中,上述樹脂較佳為含有以下之通式(1)與通式(2)。
R1、R2係H或者CnHm(n、m為整數)。
於本發明中,上述樹脂較佳為含有以下之通式(3)與選自通式(4)、通式(5)及通式(6)中之至少1種以上。
又,於本發明中,上述樹脂較佳為含有以下之通式(7)或通式(8)。
X、Y係H或者CnHm(n、m為整數)。
又,於本發明中,較佳為構成上述樹脂之聚合物之交聯密度較高。
又,於本發明中,較佳為500小時時之標準化照度為0.6以上。
又,於本發明中,可製成於上述構件之光入射側及光出射側之任一者均未設置上述障壁層之構成。
又,本發明中之薄片構件之特徵在於:其係使用上述所記載之含量子點之構件而構成。
又,本發明中之背光裝置之特徵在於具備上述所記載之含量子點之構件、或上述所記載之薄片構件。
又,本發明中之顯示裝置之特徵在於具備上述所記載之含量子點之構件、或上述所記載之薄片構件。
根據本發明之含量子點之構件,未設置障壁層便可有效地抑制發光
強度之經時變化。
1:薄片構件
2:基材膜
3:量子點層
5:量子點
5a:芯體
5b:外殼
6:有機配位基
8:光散射劑
9:增黏劑
10:樹脂膜
20:發光元件
21:複合薄片構件
22:擴散板
30:第1素材輥
32:卷取輥
33、34:夾輥
35:壓接部
36:塗佈機構
37:樹脂組合物
38:加熱部
39:薄片構件
40:導光板
50:顯示裝置
52:支持體
54:顯示部
55:背光裝置
L:長度尺寸
T:厚度尺寸
W:寬度尺寸
圖1係表示本發明中之第1實施形態之薄片構件之縱剖視圖。
圖2係量子點之模式圖。
圖3係表示本發明中之第2實施形態之薄片構件之縱剖視圖。
圖4係表示本發明中之第3實施形態之薄片構件之縱剖視圖。
圖5係表示本發明中之第4實施形態之薄片構件之縱剖視圖。
圖6係本實施形態之薄片構件之立體圖。
圖7係使用本實施形態之薄片構件之顯示裝置之縱剖視圖。
圖8係使用本實施形態之薄片構件之與圖7不同之顯示裝置之縱剖視圖。
圖9係使用本實施形態之薄片構件之導光構件之縱剖視圖。
圖10係表示用以製造本實施形態之薄片構件之製造裝置之概念圖。
圖11係表示以耐久條件(1)所測得之本實施例中之經過時間與綠色光強度之關係之圖表。
圖12係表示以耐久條件(1)所測得之本實施例中之經過時間與紅色光強度之關係之圖表。
圖13係表示以耐久條件(2)所測得之本實施例中之經過時間與綠色光強度之關係之圖表。
圖14係表示以耐久條件(2)所測得之本實施例中之經過時間與紅色光強度之關係之圖表。
圖15係表示以耐久條件(3)所測得之本實施例中之經過時間與綠色光強度之關係之圖表。
圖16係表示以耐久條件(3)所測得之本實施例中之經過時間與紅色光強度之關係之圖表。
圖17係表示於耐久試驗(1)中於與圖11及圖12不同之薄片構件中所測得之經過時間與藍色光強度之關係之圖表。
圖18係表示於耐久試驗(1)中於與圖11及圖12不同之薄片構件中所測得之經過時間與綠色光強度之關係之圖表。
圖19係表示於耐久試驗(1)中於與圖11及圖12不同之薄片構件中所測得之經過時間與紅色光強度之關係之圖表。
圖20係表示於耐久試驗(4)中於與圖11及圖12不同之薄片構件中所測得之經過時間與藍色光強度之關係之圖表。
圖21係表示於耐久試驗(4)中於與圖11及圖12不同之薄片構件中所測得之經過時間與綠色光強度之關係之圖表。
圖22係表示於耐久試驗(4)中於與圖11及圖12不同之薄片構件中所測得之經過時間與紅色光強度之關係之圖表。
圖23係表示於耐久試驗(5)中於與圖11及圖12不同之薄片構件中所測得之經過時間與藍色光強度之關係之圖表。
圖24係表示於耐久試驗(5)中於與圖11及圖12不同之薄片構件中所測得之經過時間與綠色光強度之關係之圖表。
圖25係表示於耐久試驗(5)中於與圖11及圖12不同之薄片構件中所測得之經過時間與紅色光強度之關係之圖表。
圖26係表示比較例中之經過時間與標準照度之關係之圖表。
以下,對本發明之一實施形態(以下,簡記為「實施形態」)詳細地進
行說明。再者,本發明並不限定於以下之實施形態,可於其主旨之範圍內進行各種變化並實施。
圖1係表示本發明中之第1實施形態之薄片構件之縱剖視圖。如圖1所示,薄片構件1係量子點分散於樹脂中而成之薄片狀物,於薄片構件1之兩側或單側、換言之光入射側或光出射側不具備障壁層。
如圖6所示,薄片構件1形成為較薄之板狀,通常所謂「薄片」,設為其厚度較小為長度及寬度之商之構成。薄片構件1不論有無可撓性均可,但較佳為可撓性。薄片構件1有時簡稱為薄片,或者有時亦被稱為膜或膜薄片等。但是,於本說明書中,所謂「膜」,定義為具有可撓性之薄片物。又,薄片構件1亦可為即便以一定厚度形成,厚度亦會視場所而變形,或朝向長度方向或寬度方向緩慢變化或者階段地變化之構成。薄片構件1之長度尺寸L、寬度尺寸W、及厚度尺寸T並無限定,根據製品而變更為各種尺寸。例如,存在如電視般用作大型之製品之背光用之情形,亦存在如智慧型手機般用作小型之行動裝置之背光用之情形,因此,根據製品決定大小。
薄片構件1內包含大量量子點,除量子點以外,亦可包含螢光顏料、螢光染料等。例如,亦可為將紅色之量子點與綠色之普通之螢光體(YAG(Yttrium Aluminum Garnet,釔-鋁-石榴石)或Sialon(賽隆)等)混合而成者。
量子點係具有數nm~數十nm左右之粒徑之奈米粒子。
例如,量子點係由CdS、CdSe、ZnS、ZnSe、ZnSeS、ZnTe、ZnTeS等形成。量子點較佳為不包含Cd,又,亦不包含P。Cd因其毒性而於各國限制其使用。又,有機磷化合物昂貴,又,容易於空氣中氧化,故
而合成不穩定而容易帶來成本之上升或螢光特性之不穩定化、製造步驟之繁雜性。
如圖2A所示,較佳為於量子點5之表面配位有大量有機配位基6。藉此,可抑制量子點5彼此之凝聚而表現出目標光學特性。可用於反應之配位基並無特別限定,例如可列舉以下之配位基作為代表性之配位基。
脂肪族一級胺系、油基胺:C18H35NH2、硬脂基(十八烷基)胺:C18H37NH2、十二烷基(月桂基)胺:C12H25NH2、癸基胺:C10H21NH2、辛基胺:C8H17NH2
脂肪酸、油酸:C17H33COOH、硬脂酸:C17H35COOH、棕櫚酸:C15H31COOH、肉豆蔻酸:C13H27COOH、月桂(十二烷)酸:C11H23COOH、癸酸:C9H19COOH、辛酸:C7H15COOH
硫醇系、十八烷基硫醇基:C18H37SH、己烷癸烷硫醇基:C16H33SH、十四烷硫醇基:C14H29SH、十二烷硫醇基:C12H25SH、癸烷硫醇基:C10H21SH、辛烷硫醇基:C8H17SH
膦系、三辛基膦:(C8H17)3P、三苯基膦:(C6H5)3P、三丁基膦:(C4H9)3P
氧化膦系、三辛基氧化膦:(C8H17)3P=O、三苯基氧化膦:(C6H5)3P=O、三丁基氧化膦:(C4H9)3P=O
又,圖2B所示之量子點5係具有芯體5a及被覆於芯體5a之表面之外殼5b之核殼結構。如圖2B所示,較佳為於量子點5之表面配位有大量有機配位基6。圖2B所示之量子點5之芯體5a係圖2A所示之奈米粒子。因此,芯體5a例如係由上述所列舉之材質形成。不論外殼5b之材質,但例如係由硫化鋅(ZnS)等形成。外殼5b亦與芯體5a同樣地,較佳為不包含鎘(Cd)。
再者,外殼5b亦可為固溶化於芯體5a之表面之狀態。於圖2B中,以虛線表示芯體5a與外殼5b之交界,其係指可藉由分析確認芯體5a與外殼5b之交界或無法藉由分析確認芯體5a與外殼5b之交界。
量子點中例如包含螢光波長約為520nm(綠色)及約為660nm(紅色)之量子點。因此,當藍色之光自光入射面入射時,藉由量子點而藍色之一部分被轉換成綠色或紅色。藉此,可自光出射面獲得白色之光。
圖1所示之薄片構件1係單層結構,成形為薄片狀而構成。另一方面,例如,如圖3所示,薄片構件1亦可為於基材膜2之至少單面形成有量子點層3之薄片狀物。
於圖3所示之構成中,例如可於基材膜2之表面塗佈並形成量子點層2。並未特別限定基材膜2,但就光透過性、使用性(操作性)、及與量子點層3之密接性之觀點而言,較佳為PET(聚對苯二甲酸乙二酯)膜。
於本實施形態中,供量子點分散之樹脂之特徵在於含有以下之通式(1)與通式(2)。
R1、R2係H或者CnHm(n、m為整數)。
通式(1)係異氰尿酸酯化合物。又,通式(2)位於樹脂聚合物之末端位。
於本實施形態中,較佳為通式(1)所示之異氰尿酸酯化合物與通式(2)所示之包含末端位之樹脂單體混合而成者。異氰尿酸酯化合物係提高耐久性之主體性材質,通式(2)所示之包含末端位之樹脂單體係作為交聯劑而發揮作用,藉此即便未如先前般利用障壁層被覆薄片構件1,亦可維持較高之發光強度並且獲得優異之耐久性。
於本實施形態中,作為供量子點分散之樹脂,可例示以下樹脂。
即,樹脂較佳為含有以下之通式(3)與選自通式(4)、通式(5)及通式(6)中之至少1種以上。
根據本實施形態,較佳為選擇將通式(3)與通式(4)組合而成之樹脂化合物、將通式(3)與通式(5)組合而成之樹脂化合物、及將通式(3)與通式(6)組合而成之樹脂化合物中之至少任1種。再者,亦可為自通式(4)、通式(5)及通式(6)中選擇2種以上並與通式(3)混合而成者。
通式(3)係異氰尿酸三烯丙酯,通式(4)係季戊四醇四(3-巰基丙酸酯),通式(5)係(1,3,5-三(3-巰基丁醯基氧基乙基)-1,3,5-三-2,4,6(1H,3H,5H-三酮),通式(6)係(二季戊四醇六(3-巰基丙酸酯)。
如下述實驗所示,根據本實施形態之薄片構件1,可將500小時時之
標準化照度確保為0.6以上。較佳為可確保0.7以上之標準化照度,更佳為可確保0.8以上之標準化照度。又,可將薄片構件1之透過率設為90%以上。又,可將BT.2020(色域)之覆蓋率設為90%以上,進而較佳為可設為95%以上。
或於本實施形態中,樹脂較佳為含有以下之通式(7)或通式(8)。
X、Y係H或者CnHm(n、m為整數)。
於本實施形態中,作為薄片構件1所使用之樹脂,除上述以外,亦可包含聚丙烯、聚乙烯、聚苯乙烯、AS(Acrylonitrile Styrene,丙烯腈-苯乙烯)樹脂、ABS(Acrylonitrile Butadiene Styrene,丙烯腈-丁二烯-苯乙烯)樹脂、丙烯酸系樹脂、甲基丙烯酸系樹脂、聚氯乙烯、聚縮醛、聚醯胺、聚碳酸酯、改性聚苯醚、聚對苯二甲酸丁二酯、聚對苯二甲酸乙二酯、聚碸、聚醚碸、聚苯硫醚、聚醯胺醯亞胺、聚甲基戊烯、液晶聚合
物、環氧樹脂、酚樹脂、尿素樹脂、三聚氰胺樹脂、環氧樹脂、鄰苯二甲酸二烯丙酯樹脂、不飽和聚酯樹脂、聚醯亞胺、聚胺基甲酸酯、聚矽氧樹脂、苯乙烯系熱塑性彈性體或該等之若干種之混合物等。
於本實施形態中,如圖4所示,亦可使薄片構件1中含有光散射劑8。於圖3所示之構成中,量子點層3中含有光散射劑8。光散射劑8並未特別限定材質,可提示SiO2、BN、AlN等微粒子等。作為一例,光散射劑8於薄片構件1中或量子點層3中包含1~10wt%。
又,於圖5所示之另一實施形態中,於薄片構件1中包含增黏劑9。於圖3所示之構成中,於量子點層3中含有增黏劑9。增黏劑9之材質並無特別限定,可例示羧基乙烯基聚合物、羧甲基纖維素、丙烯酸甲酯共聚物、膨潤土(鋁矽酸鹽)或鋰膨潤石(鎂矽酸鹽)系添加物等。藉由包含增黏劑9,可將構成薄片構件1及量子點層3之樹脂組合物調整為適度之黏度,從而可容易地將薄片構件1及量子點層3形成為特定厚度及特定形狀。
又,於本實施形態中,為了提高薄片構件1中所包含之量子點之分散性,較佳為包含分散劑。並未特別限定分散劑之材質,可使用環氧樹脂系、聚胺基甲酸酯系、聚羧酸鹽系、萘磺酸鹽之福馬林縮合系聚合物系、聚乙二醇系、聚羧酸之部分烷基酯系化合物系、聚醚系、聚伸烷基聚胺、烷基磺酸鹽系、四級銨鹽系、高級醇環氧烷系、多元醇酯系、烷基聚胺系、或多磷酸鹽系之分散劑等,具體而言,可例示BYK-Chemie‧Japan公司製造之DISPERBYK(註冊商標)。
又,於本實施形態中,亦可於包含量子點之薄片構件1之端部(邊緣)設置耐水性優異之保護層。藉由利用保護層覆蓋薄片構件1之端部,可有效地抑制薄片構件1之劣化。另一方面,根據本實施形態之包含量子點之
薄片構件1,即便為未設置保護層而薄片構件1之端部表面露出之狀態,與先前相比,亦可抑制量子點之劣化。於本實施形態中,可列舉可抑制劣化係聚合物之交聯密度較高等作為原因。
本實施形態之包含量子點之薄片構件1例如可組裝於圖7所示之背光裝置55。於圖7中,背光裝置55具有複數個發光元件20(LED)及與發光元件20對向之本實施形態之薄片構件1而構成。如圖7所示,各發光元件20支持於支持體52之表面。於圖7中,背光裝置55配置於液晶顯示器等之顯示部54之背面側,並構成顯示裝置50。
再者,雖於圖7中並未圖示,但於發光元件20與顯示部54之間,除可介存薄片構件1以外,亦可介存使光擴散之擴散板、及其他薄片等。
又,圖7所示之包含量子點之薄片構件1係由一片形成,但例如亦可以成為特定之大小之方式將複數片薄片構件1接合。以下,將藉由平鋪將複數個薄片構件1接合而成之構成稱為複合薄片構件。
此處,對配置複合薄片構件代替圖7之顯示裝置50之薄片構件1並且將擴散板配置於發光元件20與複合薄片構件之間之構成即發光元件20/擴散板/複合薄片構件/顯示部54之構成進行探討。於該構成中,由發光元件20放射且於擴散板擴散之光入射至複合薄片構件。由於在擴散板擴散之光入射至複合薄片構件,因此基於距發光元件20之距離之光之強度分佈受到抑制。又,與不存在擴散板之情形時相比,發光元件20與複合薄片構件之距離變遠,因此發光元件20所發出之熱對複合薄片中所包含之量子點之影響減小。
相對於此,如圖8所示,亦可按照發光元件20/複合薄片構件21/擴散板22/顯示部54之順序配置。藉此,即便於在各薄片構件1之接縫產生漫反
射、或因自接縫進入之水蒸氣而導致之量子點之劣化等所引起之發光色之不均之情形時,亦可適當地抑制顯示部54之顯示產生色不均。即,自複合薄片構件21釋放之光於擴散板22擴散後入射至顯示部54,因此可抑制顯示部54之顯示中之色不均。
再者,於使用複合薄片構件21之情形時,與對圖8所示之顯示裝置之應用無關,較佳為於複合薄片構件21之光出射面側配置擴散板並使用。
或者亦可如圖9所示般,於導光板40之表面設置本實施形態之薄片構件1而構成導光構件。如圖9所示,於導光板40之側面配置有發光元件20(LED(Light-emitting Diode,發光二極體))。再者,本實施形態之薄片構件1之用途並不限定於圖7、圖8及圖9。
於本實施形態中,與先前相比,可有效地抑制薄片構件1之發光強度之經時變化。因此,可使將本實施形態之薄片構件1用於背光裝置55或導光構件等時之波長轉換特性穩定,從而可實現背光裝置55或導光構件之長壽命化。
又,本實施形態之薄片構件1可製成可撓性。因此,可將薄片構件1適當地設置於彎曲之表面等。
再者,除可將本實施形態之薄片構件1應用於上述背光裝置或導光構件以外,亦可將其應用於照明裝置或光源裝置、光擴散裝置、光反射裝置等。
圖10係表示用以製造本實施形態之薄片構件之製造裝置之概念圖。圖10揭示圖3所示之於基材膜2塗佈量子點層3而成之薄片構件1之製造方法之一例。
如圖10所示,本發明之製造裝置具有將成為基材膜2之樹脂膜10卷出
之第1素材輥30、卷取輥32、由一對夾輥33、34構成之壓接部35、塗佈機構36、及加熱部38而構成。
如圖10所示,自第1素材輥30將樹脂膜10卷出,使用塗佈機構36將包含量子點之樹脂組合物37塗佈於樹脂膜10之表面。作為樹脂組合物37之塗佈方法,可列舉使用公知之塗佈機或含浸塗佈機之塗佈方法。例如可例示凹版塗佈機、浸漬塗佈機、刮刀塗佈機等。
如圖10所示,於表面塗佈有樹脂組合物37之樹脂膜10藉由設置有加熱器等之加熱部38而被加熱。藉此,樹脂組合物37內所包含之溶劑蒸發,於該時點量子點層2某種程度上固形化。或亦可使量子點層2紫外線硬化。
又,利用壓接部35進行熱壓接,藉此將量子點層2與樹脂膜10之界面固接。
接下來,藉由卷取輥32卷取包含樹脂膜10/量子點層2之薄片構件39。將經卷取之薄片構件39切斷成特定大小,藉此可獲得圖3所示之薄片構件1。
於上述製造方法中,可於樹脂膜10之表面塗佈形成量子點層2,並以大致10~500μm左右形成量子點層2之厚度。又,樹脂膜10之厚度大致為數十~1000μm,因此作為薄片構件1之厚度,為100~2500μm左右。但是,並未限定量子點層2之厚度、及薄片構件1之厚度。於本實施形態中,亦可不使用基材膜,而將圖3所示之量子點層2以單層膜化。即,圖1所示之薄片構件1係成形為薄片狀者,且圖1所示之薄片構件1亦可較圖2所示之薄片構件1進而薄型化。此時,可使用射出成形、擠出成形、中空成形、熱成形、壓縮成形、壓延成形、膨脹法、流延法等方法製作薄片構件
1。
再者,亦可預先成形圖3所示之量子點層3,並將基材膜2貼合於量子點層3之成形體之至少單面。此時,可藉由熱壓接等將基材樹脂膜2貼合於量子點層3之成形體。再者,亦可於量子點層3與基材膜2之間設置接著層。
於上述實施形態中,均例示薄片構件作為含量子點之構件,但並不限定於此。例如可提示於玻璃毛細管填充本實施形態之含量子點之構件或插入成形物之棒形狀物、利用灌注加工等將本實施形態之含量子點之構件被覆於LED表面之形態、藉由噴墨法而形成之包含量子點層之構件等。
以下,藉由用以明確本發明之效果而實施之實施例及比較例對本發明詳細地進行說明。再者,本發明並不受以下之實施例任何限定。
於實驗中,獲得分散有螢光波長約為520nm(綠色)之量子點(有時稱為「綠色量子點」)與螢光波長約為660nm(紅色)之量子點(有時稱為「紅色量子點」)之QD(Quick Dry,快乾)墨水(樹脂組合物)。
含有通式(3)與通式(4)作為QD墨水之樹脂,進而添加DDT/BYK110、及ZnO(0.75%)。接下來,將QD墨水塗佈於PET膜(厚度為50μm)上,獲得薄片構件。此時,對QD墨水進行紫外線硬化而獲得量子點層。於以下之實施例中亦相同。
含有通式(3)與通式(5)作為QD墨水之樹脂,進而添加DDT/BYK110、及ZnO(0.75%)。接下來,將QD墨水塗佈於PET膜(厚度
為50μm)上,獲得薄片構件。
含有通式(3)與通式(6)作為QD墨水之樹脂,進而添加DDT/BYK110、及ZnO(0.75%)。接下來,將QD墨水塗佈於PET膜(厚度為50μm)上,獲得薄片構件。
對上述實施例1~實施例3之薄片構件進行以下之耐久試驗。
耐久條件
(1)60℃ 90RH LED點亮
(2)65℃ 95RH LED未點亮(暗處)
(3)85℃ LED未點亮(暗處)
基於上述各耐久條件測定經過時間與發光強度之關係。發光強度係利用大塚電子股份有限公司製造之總光通量測定系統對利用藍色(波長:450nm)之LED激發光使各試樣發光時之總光通量進行測定所得。
圖11係以耐久條件(1)所測得之對本實施例中之經過時間與綠色光強度之關係進行測定所得之圖表。圖12係以耐久條件(1)所測得之對本實施例中之經過時間與紅色光強度之關係進行測定所得之圖表。圖13係以耐久條件(2)所測得之對本實施例中之經過時間與綠色光強度之關係進行測定所得之圖表。圖14係以耐久條件(2)所測得之對本實施例中之經過時間與紅色光強度之關係進行測定所得之圖表。圖15係以耐久條件(3)所測得之對本實施例中之經過時間與綠色光強度之關係進行測定所得之圖表。圖16係以耐久條件(3)所測得之對本實施例中之經過時間與紅色光強度之關係進行測定所得之圖表。
如各圖表所示,得知可有效地抑制綠色光強度及紅色光強度以及經
時變化。
得知於任一實驗中,500小時時之標準化照度均為0.6以上。較佳為標準化照度為0.7以上,更佳為0.8以上。再者,「標準化照度」係將0小時(耐久試驗剛開始後)時之發光強度設為1並進行標準化之發光強度比。
又,如各圖表所示,得知實施例2與實施例1或實施例3相比,可將發光強度之經時變化抑制為較低。
繼而,將具有以下之化學式之QD墨水之樹脂塗佈於PET膜上,獲得薄片構件。
圖17係表示於耐久試驗(1)(60℃ 90RH LED點亮)中使用實施例4~實施例12所測得之經過時間與藍色光強度之關係之圖表。圖18係表示於耐久試驗(1)中使用實施例4~實施例12所測得之經過時間與綠色光強度之關係之圖表。圖19係表示於耐久試驗(1)中使用實施例4~實施例12所測得之經過時間與紅色光強度之關係之圖表。
圖20係表示於65℃ 50RH LED未點亮(暗處)(耐久試驗(4))中使用實施例4~實施例12所測得之經過時間與藍色光強度之關係之圖表。圖21係表示於耐久試驗(4)中使用實施例4~實施例12所測得之經過時間與綠色光強度之關係之圖表。圖22係表示於耐久試驗(4)中使用實施例4~實施例12所測得之經過時間與紅色光強度之關係之圖表。
圖23係表示於85℃ LED未點亮(暗處)(耐久試驗(5))中使用實施例4~實施例12所測得之經過時間與藍色光強度之關係之圖表。圖24係表示於耐久試驗(5)中使用實施例4~實施例12所測得之經過時間與綠色光強度之關係之圖表。圖25係表示使用實施例4~實施例12所測得之經過時間與紅色光強度之關係之圖表。
如各實驗結果所示,得知於大部分實施例中,可將500小時時之標準化照度設為0.6以上。再者,「標準化照度」係將0小時(耐久試驗剛開始後)時之發光強度設為1並進行標準化之發光強度比。
接下來,作為比較例,於PET膜上形成於已有樹脂材中混合量子點而
成之量子點層,並根據上述耐久條件(1)測定經過時間與綠色光強度之關係。再者,比較例中之薄片構件之水蒸氣穿透度為9(g/m2‧day)左右。得知於比較例中,如圖26所示,當經過500小時時,標準化照度降低至0.2左右,而經時變化顯著增大。
於本發明中,可獲得可有效地抑制發光強度之經時變化之薄片構件,可使用本發明之薄片構件實現具備穩定之波長轉換特性之背光裝置、導光構件、及顯示裝置等。
本申請案基於在2016年11月16日提出申請之日本專利特願2016-223205。該內容全部預先包含於本文中。
1‧‧‧薄片構件
Claims (6)
- 如請求項1之含量子點之構件,其500小時時之標準化照度為0.6以上。
- 一種薄片構件,其特徵在於:其係使用如請求項1之含量子點之構件而構成。
- 一種背光裝置,其特徵在於具備如請求項1之含量子點之構件或如請求項4之薄片構件。
- 一種顯示裝置,其特徵在於具備如請求項1之含量子點之構件或如請求項4之薄片構件。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016223205 | 2016-11-16 | ||
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KR101976659B1 (ko) * | 2016-12-12 | 2019-05-09 | 삼성에스디아이 주식회사 | 감광성 수지 조성물, 이를 이용한 감광성 수지막 및 컬러필터 |
US10921709B2 (en) * | 2018-02-06 | 2021-02-16 | Samsung Sdi Co., Ltd. | Photosensitive resin composition, photosensitive resin layer using the same, and color filter |
KR102154680B1 (ko) | 2018-07-02 | 2020-09-10 | 삼성에스디아이 주식회사 | 양자점 함유 경화성 조성물, 이를 이용한 수지막 및 디스플레이 장치 |
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EP3543750A4 (en) | 2020-06-10 |
EP3543750A1 (en) | 2019-09-25 |
TW202040169A (zh) | 2020-11-01 |
CN110268287A (zh) | 2019-09-20 |
JP2020181196A (ja) | 2020-11-05 |
WO2018092705A1 (ja) | 2018-05-24 |
US20200079649A1 (en) | 2020-03-12 |
JPWO2018092705A1 (ja) | 2019-10-17 |
JP6815577B2 (ja) | 2021-01-20 |
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