JP2023182725A - バックライト用波長変換部材、及びその製造方法 - Google Patents
バックライト用波長変換部材、及びその製造方法 Download PDFInfo
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- JP2023182725A JP2023182725A JP2023171678A JP2023171678A JP2023182725A JP 2023182725 A JP2023182725 A JP 2023182725A JP 2023171678 A JP2023171678 A JP 2023171678A JP 2023171678 A JP2023171678 A JP 2023171678A JP 2023182725 A JP2023182725 A JP 2023182725A
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- resin
- layer
- quantum dots
- wavelength conversion
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
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Abstract
Description
脂肪族1級アミン系、オレイルアミン:C18H35NH2、ステアリル(オクタデシル)アミン:C18H37NH2、ドデシル(ラウリル)アミン:C12H25NH2、デシルアミン:C10H21NH2、オクチルアミン:C8H17NH2
脂肪酸、オレイン酸:C17H33COOH、ステアリン酸:C17H35COOH、パルミチン酸:C15H31COOH、ミリスチン酸:C13H27COOH、ラウリル(ドデカン)酸:C11H23COOH、デカン酸:C9H19COOH、オクタン酸:C7H15COOH
チオール系、オクタデカンチオール:C18H37SH、ヘキサンデカンチオール:C16H33SH、テトラデカンチオール:C14H29SH、ドデカンチオール:C12H25SH、デカンチオール:C10H21SH、オクタンチオール:C8H17SH
ホスフィン系、トリオクチルホスフィン:(C8H17)3P、トリフェニルホスフィン:(C6H5)3P、トリブチルホスフィン:(C4H9)3P
ホスフィンオキシド系、トリオクチルホスフィンオキシド:(C8H17)3P=O、トリフェニルホスフィンオキシド:(C6H5)3P=O、トリブチルホスフィンオキシド:(C4H9)3P=O
実験では、樹脂成形体を作製するにあたり以下の材料を用いた。なお、いずれの原料も使用前には真空乾燥オーブン内で、減圧下80℃以上の条件で1日以上乾燥した。
樹脂:
環状オレフィンポリマー(COP):日本ゼオン株式会社 ゼオノア(登録商標)1060R
アクリル系樹脂(PMMA):三菱ガス化学株式会社 オプティマス(登録商標)7500FS
ポリエステル系樹脂(PET):三菱ガス化学株式会社 アルテスタ(登録商標)4203F
添加剤:
ステアリン酸亜鉛(ZnSt):Aldrich株式会社製
Cd系量子ドット(QD):コア/シェル構造を有する緑色発光量子ドット(以下、G-QDと称する)と赤色発光量子ドット(以下、R-QDと称する)
Cdフリー量子ドット(QD):コア/シェル構造を有する緑色発光量子ドット(G-QD)と赤色発光のCdフリー量子ドット(R-QD)
ペレット製造用押出機
メーカー名 テクノベル株式会社
仕様 スクリュ径:25mmの2軸押出機
L/D:40
最高混練温度:400℃
共押出用フィルム押出機
メーカー名 テクノベル株式会社
仕様 スクリュ径:15mmの2軸押出機、15mmの単軸押出機2機の計3機
L/D:40
最高射出温度:400℃
Tダイ幅200mm
分光放射計
メーカー名 トプコンテクノハウス株式会社 SR3-AR、及び、SR3A
マイクロスコープ
メーカー名 キーエンス株式会社 VHX-5000
アクリル樹脂2kgをCd系G-QDのヘキサン分散溶液、30mL(濃度は、光学的な吸収率より求め、この値から必要溶液量を計算した)と混合し、分散溶液をペレット全体に塗した。ヘキサン溶液を蒸発させることによってQDが表面に塗された樹脂ペレットを得た。
アクリル樹脂、2kgをCd系R-QDのヘキサン分散溶液、25mLと混合し、分散溶液をペレット全体に塗した。ヘキサン溶液を蒸発させることによってQDが表面に塗されたアクリル樹脂ペレットを得た。
COP2kgをCd系G-QDのヘキサン分散溶液、30mLと混合し、ヘキサン溶液を素早く蒸発させつつ、QDがペレット表面に塗されたCOP樹脂ペレットを得た。
COP2kgをCd系R-QDのヘキサン分散溶液、25mLと混合し、ヘキサン溶液を素早く蒸発させつつ、QDがペレット表面に塗されたCOP樹脂ペレットを得た。
PET樹脂2kgをCd系G-QDのヘキサン分散溶液、30mLと混合し、QDがペレット表面に塗されたPET樹脂ペレットを得た。
PET樹脂2kgをCd系G-QDのヘキサン分散溶液、25mLと混合し、QDがペレット表面に塗されたPET樹脂ペレットを得た。
アクリル樹脂2kgをCdフリーのG-QDのヘキサン分散溶液、40mLと混合し、分散溶液をペレット全体に塗した。ヘキサン溶液を蒸発させることによってQDが表面に塗された樹脂ペレットを得た。
アクリル樹脂2kgをCdフリーのR-QDのヘキサン分散溶液、60mLと混合し、分散溶液をペレット全体に塗した。ヘキサン溶液を蒸発させることによってQDが表面に塗された樹脂ペレットを得た。
PET樹脂ペレット原料1kgを成形機の原料投入口1に投入し(樹脂層1)、実施例1で作製したCd系G-QD含有アクリル樹脂マスターバッチ400gをアクリル樹脂原料600gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、PET樹脂ペレット原料1kgを原料投入口3に投入した(樹脂層3)。
PET樹脂ペレット原料1kgを成形機の原料投入口1に投入し(樹脂層1)、実施例2で作製したCd系R-QD含有アクリル樹脂マスターバッチ800gをアクリル樹脂原料200gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、PET樹脂ペレット原料を原料投入口3に投入した(樹脂層3)。
PET樹脂ペレット原料500gを成形機の原料投入口1に投入し(樹脂層1)、実施例1で作製したCd系G-QD含有アクリル樹脂マスターバッチ250gと実施例2で作製したCd系R-QD含有アクリル樹脂マスターバッチ500gとアクリル樹脂ペレット原料250gとを混合したものを成形機の原料投入口2に投入し(樹脂層2)、アクリル樹脂ペレット原料を原料投入口3に投入した(樹脂層3)。
実施例2で作製したCd系R-QD含有アクリル樹脂マスターバッチ500gを成形機の原料投入口1に投入し(樹脂層1)、実施例1で作製したCd系G-QD含有アクリル樹脂マスターバッチ250gをアクリル樹脂アクリル樹脂ペレット原料250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、アクリル樹脂ペレット原料500gを原料投入口3に投入した(樹脂層3)。
アクリル樹脂ペレット原料1kgを成形機の原料投入口1に投入し(樹脂層1)、実施例1で作製したCd系G-QD含有アクリル樹脂マスターバッチ250g、実施例2で作製したCd系R-QD含有アクリル樹脂マスターバッチ500gとアクリル樹脂ペレット原料250gを混合した計1kgのペレット混合物を成形機の原料投入口2に投入し(樹脂層2)、アクリル樹脂ペレット原料1kgを原料投入口3に投入した(樹脂層3)。
実施例4で作製したCd系R-QD含有COP樹脂ペレット原料マスターバッチ500gを成形機の原料投入口1に投入し(樹脂層1)、実施例3で作製したG-QD含有COP樹脂マスターバッチ250gをCOP樹脂ペレット原料250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、COP樹脂ペレット原料500gを原料投入口3に投入した(樹脂層3)。
PET樹脂ペレット原料500gを成形機の原料投入口1に投入し(樹脂層1)、実施例4で作製したCd系R-QD含有COP樹脂マスターバッチ250gをCOP樹脂ペレット原料250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、PET樹脂ペレット原料500gを原料投入口3に投入した(樹脂層3)。
実施例6で作製したCd系R-QD含有PET樹脂マスターバッチ250gとPET樹脂ペレット原料250gを混合したものを成形機の原料投入口1に投入し(樹脂層1)、実施例1で作製したCd系G-QD含有アクリル樹脂マスターバッチ250gをアクリル樹脂ペレット原料250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、PET樹脂ペレット原料500gを原料投入口3に投入した(樹脂層3)。
実施例4で作製したCd系R-QD含有COP樹脂マスターバッチ250gとCOP樹脂ペレット原料250gを混合したものを成形機の原料投入口1に投入し(樹脂層1)、実施例3で作製したCd系G-QD含有COP樹脂マスターバッチ250gを実施例4で作製したCd系R-QD含有COP樹脂マスターバッチ250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、実施例3で作製したCd系G-QD含有COP樹脂マスターバッチ250gとCOP樹脂ペレット原料250gを混合したものを原料投入口3に投入した(樹脂層3)。
実施例8で作製したCdフリーR-QD含有アクリル樹脂マスターバッチ500gを成形機の原料投入口1に投入し(樹脂層1)、実施例7で作製したCdフリーG-QD含有アクリル樹脂マスターバッチ250gをアクリル樹脂ペレット原料250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、PET樹脂ペレット原料500gを原料投入口3に投入した(樹脂層3)。
実施例8で作製したCdフリーR-QD含有アクリル樹脂マスターバッチ250gとアクリル樹脂ペレット原料250gを混合したものを成形機の原料投入口1に投入し(樹脂層1)、実施例1で作製したCd系G-QD含有アクリル樹脂マスターバッチ250gをアクリル樹脂ペレット原料250gと混合したものを成形機の原料投入口2に投入し(樹脂層2)、アクリル樹脂ペレット原料500gを原料投入口3に投入した(樹脂層3)。
1a、2a、3a、4a:上層
1b、2b、3b、4b:中層
1c、2c、3c、4c:下層
10 :量子ドット
10a :コア
10b :シェル
11 :有機配位子
Claims (10)
- 複数の樹脂層が積層され、少なくとも一層の樹脂層に量子ドットを含有し、
前記複数の樹脂層が、共押出成形にて一体化されており、
前記樹脂層は、前記量子ドットを含む中層と、前記中層の上下に形成された前記量子ドットを含まない上層及び下層との3層構造であり、
前記上層及び前記下層は、光散乱剤を含み、
前記中層と前記上層との界面、及び前記中層と前記下層との界面には接着層がなく、各樹脂層が直接接合される、
ことを特徴とするバックライト用波長変換部材。 - 前記量子ドットを含む樹脂層と、前記量子ドットを含まない樹脂層とが一体化されていることを特徴とする請求項1に記載のバックライト用波長変換部材。
- 前記量子ドットを含まない樹脂層に、機能性添加剤が含まれることを特徴とする請求項2に記載のバックライト用波長変換部材。
- 前記量子ドットは、少なくとも、緑色発光の量子ドットと、赤色発光の量子ドットを含むことを特徴とする請求項1に記載のバックライト用波長変換部材。
- 前記樹脂層には、非晶性樹脂が用いられることを特徴とする請求項1に記載のバックライト用波長変換部材。
- 前記樹脂層の総厚みが、50μm以上500μm以下であることを特徴とする請求項1から請求項5のいずれかに記載のバックライト用波長変換部材。
- 青色光強度に対する緑色光強度比、及び青色光強度に対する赤色光強度比はそれぞれ、0.3以上であることを特徴とする請求項1から請求項6のいずれかに記載のバックライト用波長変換部材。
- 青色光強度、緑色光強度、及び赤色光強度の各蛍光半値幅が、100nm以下であることを特徴とする請求項1から請求項7のいずれかに記載のバックライト用波長変換部材。
- 請求項1から請求項8のいずれかに記載のバックライト用波長変換部材を用いて成形加工されてなることを特徴とする波長変換部材。
- 請求項1から請求項9のいずれかに記載のバックライト用波長変換部材の製造方法であって、
量子ドットを含有する樹脂ペレットを形成する工程、
3層の樹脂層を、共押出成形により一体化する工程、を有することを特徴とするバックライト用波長変換部材の製造方法。
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EP3699650A1 (en) | 2020-08-26 |
US11905443B2 (en) | 2024-02-20 |
TWI827556B (zh) | 2024-01-01 |
TW201922500A (zh) | 2019-06-16 |
US11629288B2 (en) | 2023-04-18 |
US20210189230A1 (en) | 2021-06-24 |
US20230203366A1 (en) | 2023-06-29 |
CN111226144A (zh) | 2020-06-02 |
EP3699650A4 (en) | 2021-07-21 |
TWI872864B (zh) | 2025-02-11 |
JPWO2019078135A1 (ja) | 2020-12-03 |
JP7387949B2 (ja) | 2023-11-29 |
TW202413109A (zh) | 2024-04-01 |
WO2019078135A1 (ja) | 2019-04-25 |
US20240228869A1 (en) | 2024-07-11 |
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