JP2016506069A - 発光ダイオード - Google Patents
発光ダイオード Download PDFInfo
- Publication number
- JP2016506069A JP2016506069A JP2015545364A JP2015545364A JP2016506069A JP 2016506069 A JP2016506069 A JP 2016506069A JP 2015545364 A JP2015545364 A JP 2015545364A JP 2015545364 A JP2015545364 A JP 2015545364A JP 2016506069 A JP2016506069 A JP 2016506069A
- Authority
- JP
- Japan
- Prior art keywords
- film layer
- silicon film
- emitting diode
- light emitting
- group
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 91
- 239000000203 mixture Substances 0.000 claims description 89
- 239000000126 substance Substances 0.000 claims description 81
- 229910052710 silicon Inorganic materials 0.000 claims description 80
- 229920001296 polysiloxane Polymers 0.000 claims description 76
- 239000010703 silicon Substances 0.000 claims description 58
- 125000003118 aryl group Chemical group 0.000 claims description 41
- 239000002245 particle Substances 0.000 claims description 35
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 34
- 125000003342 alkenyl group Chemical group 0.000 claims description 32
- 125000003700 epoxy group Chemical group 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 10
- 238000005286 illumination Methods 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 79
- 125000004432 carbon atom Chemical group C* 0.000 description 74
- 150000001875 compounds Chemical class 0.000 description 38
- -1 3,4-epoxycyclohexylethyl group Chemical group 0.000 description 33
- 125000000217 alkyl group Chemical group 0.000 description 24
- 150000002430 hydrocarbons Chemical group 0.000 description 21
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 13
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- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
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- 239000002253 acid Substances 0.000 description 2
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 2
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- 125000005370 alkoxysilyl group Chemical group 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000002585 base Substances 0.000 description 2
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- 239000007788 liquid Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
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Abstract
Description
実施例及び比較例により製造された発光ダイオード(LED)素子パッケージに電流を印加しながら積分球(大塚電子製、LE−3400)を用いて光特性(色均一性、色分散及び初期光束)を測定した。
[第1シリコンフィルムの形成]
下記化学式A〜Cに示すオルガノポリシロキサンを混合(配合量:化学式A:20g、化学式B:60g、化学式C:18g)と、Pt(0)の含量が2ppmである量として触媒(Platinum(0)−1,3−divinyl−1,1,3,3−tetramethyldisiloxane)を配合して硬化後に400nm波長に対する屈折率が約1.56程度になる硬化性組成物を製造した。前記硬化性組成物98gに、平均粒径が約10nm程度のアルミナを約10g混合し、蛍光体(YAG、Yttrium aluminium garnet)190gを混合してコーティング組成物を製造した後、これをフッ素樹脂フィルム(ETFE(ethylene tetrafluoroethylene)film)に最終厚さが約10μm程度になるようにコーティングし、80℃で5分間維持して第1シリコンフィルムを形成した。
上記のような方式に、下記化学式C〜Eに示す化合物を混合(配合量:化学式D:20g、化学式E:60g、化学式C:18g)し、Pt(0)の含量が2ppmになるように触媒(Platinum(0)−1,3−divinyl−1,1,3,3−tetramethyldisiloxane)を配合し、最終屈折率が約1.49の硬化性組成物を調製した。調製した硬化性組成物98gと蛍光体(YAG、Yttrium aluminium garnet)200g及び平均粒径が約10nmであるシリカ粒子3gを混合してコーティング組成物を製造し、第1シリコンフィルムの場合と同様に、フッ素樹脂フィルム(ETFE(ethylene tetrafluoroethylene)film)に最終厚さが約100μm程度になるようにコーティングし、80℃で5分間維持して第2シリコンフィルムを形成した。
製造した各フィルムを適正な大きさに裁断し、まず第1シリコンフィルムをLEDチップ(ポリフタルアミド(PPA)に製造した3535LEDパッケージ用LEDチップ)に転写し、フッ素樹脂フィルムを除去した後に150℃で5分間維持した。続いて、第1シリコンフィルム上に、同様に第2シリコンフィルムを転写し、フッ素樹脂フィルムを除去した後に150℃で4時間さらに維持して硬化させた。上記において、シリコンフィルムの転写時にはLED素子と外部接続端子を接続した金線が被服されるようにした。続いて、リフレクタに封止材として一般的に適用される透明シリコン樹脂を注入し、150℃で4時間維持することでLEDパッケージを製造した。
第1シリコンフィルムを形成する際に、実施例1の第1シリコンフィルムを形成する際に使用したものと同様の硬化性組成物98g、平均粒径が約10nmであるアルミナ粒子10g及び蛍光体(YAG)200gを配合したコーティング液を使用したことを除き、実施例1と同様にLEDパッケージを製造した。
第1シリコンフィルムを形成する際に、実施例1の第1シリコンフィルムを形成する際に使用したものと同様の硬化性組成物98g及び蛍光体(YAG)200gを配合したコーティング液を使用し、第2シリコンフィルムを形成する際に、実施例1の第2シリコンフィルムを形成する際に使用したものと同様の硬化性組成物98g及び蛍光体(YAG)200gを配合したコーティング液を使用したことを除き、実施例1と同様にLEDパッケージを製造した。
第1シリコンフィルムを形成する際に、実施例1の第1シリコンフィルムを形成する際に使用したものと同様な硬化性組成物98g、蛍光体(YAG)200g及び散乱粒子として屈折率が約1.63程度であって、平均粒径が約100nm程度の酸化チタン粒子を約3g配合したコーティング液を使用したことを除き、実施例1と同様にLEDパッケージを製造した。
実施例1で第2シリコンフィルムを形成する際に使用したものと同様の硬化性組成物100gに蛍光体(YAG)5gを配合したコーティング液を、通常にLEDパッケージの封止材を形成することと同様に素子全体を覆うようにリフレクタに調合(dispensing)し、150℃で4時間維持してLEDパッケージを製造した。この過程で使用したLEDチップは実施例1と同じものである。
第1シリコンフィルムを形成せず、第2シリコンフィルムのみをLEDチップに転写したことを除き、実施例1と同様にLEDパッケージを製作した。
第1シリコンフィルム層を形成した後に、第1シリコンフィルム層上に蛍光体(YAG)をトルエンに分散させたコーティング液を塗布した後に、150℃でベイキング(baking)して蛍光体膜を形成し、第2シリコンフィルム層を形成しないことを除き、実施例1と同様にLEDパッケージを製作した。
102 第1フィルム層
103 第2フィルム層
Claims (14)
- 発光ダイオードチップと、前記発光ダイオードチップ上に形成されている蛍光体を含む第1シリコンフィルム層と、前記第1シリコンフィルム層上に形成され、蛍光体を含み、前記蛍光体を除いた状態で前記第1シリコンフィルム層よりも低い屈折率を有する第2シリコンフィルム層と、を含むことを特徴とする発光ダイオード。
- 第1シリコンフィルム層は、400nmの波長の光に対する屈折率が1.5以上であることを特徴とする請求項1に記載の発光ダイオード。
- 第2シリコンフィルム層は、蛍光体が除かれた状態で400nm波長の光に対する屈折率が1.6以下であることを特徴とする請求項1に記載の発光ダイオード。
- 第1または第2シリコンフィルム層は、下記化学式1の平均単位を有するオルガノポリシロキサンと下記化学式2の平均単位を有するオルガノポリシロキサンを含む組成物の硬化フィルム層であることを特徴とする請求項1に記載の発光ダイオード:
PaQbSiO(4−a−b)/2 化学式1
HcQdSiO(4−c−d)/2 化学式2
化学式1及び2において、Pはアルケニル基であり、Qはエポキシ基または1価炭化水素基であり、a及びbは、a+bが0.8〜2.2であり、a/(a+b)が0.001〜0.15となる数であり、c及びdはc+dが1〜2.8であり、c/(c+d)が0.001〜0.34とする数である。 - 第1シリコンフィルム層は、ケイ素原子に結合されるエポキシ基を含むことを特徴とする請求項1に記載の発光ダイオード。
- 第1シリコンフィルムに含まれる全体ケイ素原子のモル数(Si)に対するエポキシ基のモル数(E)の割合(E/Si)が0.001〜0.15であることを特徴とする請求項5に記載の発光ダイオード。
- 第1シリコンフィルム層は、ケイ素原子に結合されるアリール基を含むことを特徴とする請求項1に記載の発光ダイオード。
- 第1シリコンフィルム層は、400nmの波長の光に対する屈折率が1.55以上のフィラーを含むことを特徴とする請求項1に記載の発光ダイオード。
- 第1シリコンフィルム層は、散乱粒子を含むことを特徴とする請求項1に記載の発光ダイオード。
- 散乱粒子は、平均粒径が100nm以上であり、前記散乱粒子を除いた第1シリコンフィルム層の屈折率との差の絶対値が0.15〜1.0であることを特徴とする請求項9に記載の発光ダイオード。
- 第1または第2シリコンフィルム層内の散乱粒子の重量割合が5〜90重量%であることを特徴とする請求項1に記載の発光ダイオード。
- 発光ダイオードチップ上に蛍光体を含む第1シリコンフィルムを転写し、前記第1シリコンフィルム上に蛍光体を含み、前記蛍光体を除いた状態で前記第1シリコンフィルムよりも低い屈折率を有する第2シリコンフィルムを転写することを含むことを特徴とする発光ダイオードの製造方法。
- 請求項1に記載の発光ダイオードを含むことを特徴とする液晶ディスプレイ。
- 請求項1に記載の発光ダイオードを含むことを特徴とする照明機構。
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KR20140068780A (ko) | 2014-06-09 |
KR101560062B1 (ko) | 2015-10-15 |
KR101565660B1 (ko) | 2015-11-04 |
CN104823289A (zh) | 2015-08-05 |
EP2927969A4 (en) | 2016-06-22 |
CN104823289B (zh) | 2019-01-01 |
WO2014084637A1 (ko) | 2014-06-05 |
TW201440259A (zh) | 2014-10-16 |
EP2927969A1 (en) | 2015-10-07 |
TW201440260A (zh) | 2014-10-16 |
JP2016511530A (ja) | 2016-04-14 |
US20150318454A1 (en) | 2015-11-05 |
US9620687B2 (en) | 2017-04-11 |
WO2014084639A1 (ko) | 2014-06-05 |
EP2922104A4 (en) | 2016-06-29 |
KR20140068781A (ko) | 2014-06-09 |
JP6192025B2 (ja) | 2017-09-06 |
CN104813491A (zh) | 2015-07-29 |
EP2922104B1 (en) | 2019-05-08 |
TWI525861B (zh) | 2016-03-11 |
EP2922104A1 (en) | 2015-09-23 |
US9660155B2 (en) | 2017-05-23 |
US20150303358A1 (en) | 2015-10-22 |
CN104813491B (zh) | 2019-01-11 |
EP2927969B1 (en) | 2019-04-24 |
TWI525860B (zh) | 2016-03-11 |
JP6226250B2 (ja) | 2017-11-08 |
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