JP5997467B2 - 発光装置 - Google Patents
発光装置 Download PDFInfo
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- JP5997467B2 JP5997467B2 JP2012062921A JP2012062921A JP5997467B2 JP 5997467 B2 JP5997467 B2 JP 5997467B2 JP 2012062921 A JP2012062921 A JP 2012062921A JP 2012062921 A JP2012062921 A JP 2012062921A JP 5997467 B2 JP5997467 B2 JP 5997467B2
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- FPOBXNYAWLLCGZ-UHFFFAOYSA-N nickel(2+);1,2,3,4,5-pentamethylcyclopenta-1,3-diene Chemical compound [Ni+2].CC=1C(C)=C(C)[C-](C)C=1C.CC=1C(C)=C(C)[C-](C)C=1C FPOBXNYAWLLCGZ-UHFFFAOYSA-N 0.000 description 1
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- 229910001750 ruby Inorganic materials 0.000 description 1
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- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
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- 239000002344 surface layer Substances 0.000 description 1
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- QGJSAGBHFTXOTM-UHFFFAOYSA-K trifluoroerbium Chemical compound F[Er](F)F QGJSAGBHFTXOTM-UHFFFAOYSA-K 0.000 description 1
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Description
本実施の形態では、本発明の一態様の発光装置の構成について、図1乃至図3を用いて説明する。
本実施の形態で例示する発光装置100は、EL素子が設けられた基板とは反対側に光を射出する上面発光型の発光装置である。
図2に示す発光装置150は、4つのEL素子がそれぞれ直列に接続された発光装置である。図2(A)に発光装置150の上面概略図を、また図2(B)に図2(A)中の補助配線123に沿った切断線B−B’における断面概略図を示す。なお、明瞭化のため図2(A)には基板、対向基板、主配線、副配線、下部電極層、及び補助配線のみを明示している。
図3に示す発光装置160は、4つのEL素子がそれぞれ直列に接続された発光装置である。図3(A)に発光装置160の上面概略図を、また図3(B)に図3(A)中の補助配線123に沿った切断線C−C’における断面概略図を示す。なお、明瞭化のため図3(A)には基板、対向基板、主配線、下部電極層、及び補助配線のみを明示している。
ここで、各構成に用いることのできる材料と、その形成方法について説明する。なお、材料については以下に限られず、同様の機能を有する材料であれば適宜用いることができる。
光射出側に設けられる基板の材料としては、ガラス、石英、有機樹脂などの透光性を有する材料を用いることができる。また光射出とは反対側に設けられる基板の場合は、透光性を有していなくともよく、上記の材料に加え金属、半導体、セラミック、有色の有機樹脂などの材料を用いることができる。導電性の基板を用いる場合、その表面を酸化させる、若しくは表面に絶縁膜を形成することにより絶縁性を持たせることが好ましい。
光射出側の電極層に用いることができる透光性を有する材料としては、酸化インジウム、酸化インジウム酸化スズ(ITO)、酸化インジウム酸化亜鉛、酸化亜鉛、ガリウムを添加した酸化亜鉛、グラフェンなどを用いることができる。
平坦化膜に用いられる材料としては、例えば、ポリイミド、アクリル、ポリアミド、エポキシ等の有機樹脂や、無機絶縁材料を用いることができる。例えば感光性の有機樹脂をスピンコート法などにより塗布した後、選択的に露光、現像を行って形成することが好ましい。このほかの形成方法としては、スパッタ法、蒸着法、液滴吐出法(インクジェット法)、スクリーン印刷、オフセット印刷等などを用いればよい。
主配線や補助配線をスクリーン印刷などの印刷法で形成する場合には、粒径が数nmから数十μmの導電性粒子を有機樹脂に溶解または分散させた導電性ペーストを選択的に印刷する。導電性粒子としては、銀(Ag)、金(Au)、銅(Cu)、ニッケル(Ni)、白金(Pt)、パラジウム(Pd)、タンタル(Ta)、モリブデン(Mo)およびチタン(Ti)等のいずれか一つ以上の金属粒子やハロゲン化銀の微粒子、または分散性ナノ粒子を用いることができる。また、導電性ペーストに含まれる有機樹脂は、金属粒子のバインダー、溶媒、分散剤および被覆材として機能する有機樹脂から選ばれた一つまたは複数を用いることができる。代表的には、エポキシ樹脂、シリコーン樹脂等の有機樹脂が挙げられる。また、導電層の形成にあたり、導電性のペーストを印刷した後に焼成することが好ましい。
シール材としては公知の材料を用いることができる。例えば、熱硬化型の材料、紫外線硬化型の材料を用いても良い。また二液混合型のエポキシ樹脂などを用いることができる。またシール材はその接着部位によって、無機材料同士、有機材料同士、又は無機材料と有機材料とを接着することができる材料を用いる。またシール材に用いる材料はできるだけ水分や酸素を透過しない材料であることが望ましい。
封止材としては、EL素子の発光に対する透光性を有する、無機材料、有機材料、又は無機材料と有機材料とを組み合わせた材料、又はこれらの積層を適宜用いることができる。また封止材は、上述のように発光に対する屈折率が調整されていることが好ましい。また封止材は上記シール材と同様、水分や酸素を透過しない材料であることが好ましい。また、封止材とシール材とに同じ材料を用いても良い。
接続体には、銀や銅などの導電性粒子を含む導電性ペーストなどを用いることができる。当該導電性ペーストを焼成することにより、導電性を有する接続体とすることができる。
本実施の形態では、実施の形態1で例示した発光装置100の作製方法について、図4、図5、及び図9乃至図12を用いて説明する。
ところで、EL素子を形成する場合、絶縁表面を有する基板上に形成した下部電極上に、発光性の有機化合物を含む層と、上部電極とを順次積層する方法としては、例えば真空蒸着法がある。真空蒸着法を用いて島状の層を形成する方法としては、金属板に開口部を設けたメタルマスク(遮蔽マスク、シャドーマスクともいう)を用いる方法が知られている。基板に接して蒸着源との間にメタルマスクを設け、当該メタルマスクの開口部を介して基板に蒸着を行うと、開口部の形状に応じた形状のパターンを形成することができる。
本実施の形態では、本発明の一態様に適用できるEL層の一例について、図6を用いて説明する。
本実施の形態では、本発明の一態様の発光装置を用いて完成させた照明装置の一例について、図7を用いて説明する。
101 基板
102 主配線
102a 主配線
102b 主配線
102c 主配線
102d 主配線
102e 主配線
102f 主配線
103 下部電極層
103a 下部電極層
103b 下部電極層
103c 下部電極層
103d 下部電極層
103e 下部電極層
103f 下部電極層
103g 下部電極層
103h 下部電極層
105 EL層
105a EL層
105b EL層
105c EL層
105d EL層
105e EL層
105f EL層
105g EL層
105h EL層
107 上部電極層
107a 上部電極層
107b 上部電極層
107c 上部電極層
107d 上部電極層
107e 上部電極層
107f 上部電極層
107g 上部電極層
107h 上部電極層
109 平坦化膜
111 封止材
113 シール材
115 接続体
117a 領域
117b 領域
119a 領域
119b 領域
121 対向基板
123 補助配線
125 レンズアレイ
127 レンズアレイ
128 コンバータ
129a 接続電極
129b 接続電極
131a 配線
131b 配線
131c 配線
131d 配線
131e 配線
150 発光装置
151a 副配線
151b 副配線
151c 副配線
160 発光装置
171a 異物
171b 異物
173 レーザ光
201 基板
203 EL素子
205 不良箇所
207 主配線
209 発光
211 外部電源
213 ソースメータ
215 ステージ
217 位置合わせ機構
219 カメラ
221 画像処理機構
223 表示装置
225 エミッション顕微鏡
227 集光レンズ
229 ハーフミラー
231a シャッター
231b シャッター
233 レーザ装置
701 正孔注入層
702 正孔輸送層
703 発光性の有機化合物を含む層
704 電子輸送層
705 電子注入層
706 電子注入バッファー層
707 電子リレー層
708 複合材料層
800 第1のEL層
801 第2のEL層
803 電荷発生層
901 照明装置
902 照明装置
903 卓上照明器具
904 面状照明装置
9501 照明部
9503 支柱
9505 支持台
Claims (2)
- 第1の基板と、前記第1の基板と対向する第2の基板とを有し
前記第1の基板は、第1の電極と、有機化合物を含む層と、第2の電極とを有する発光素子を有し、
前記第2の基板は、配線と、構造物と、を有し、
前記第2の電極は、前記配線と電気的に接続されており、
前記構造物は、前記発光素子からの光を拡散する機能を有し、
前記構造物は、異なる形状の二種類のマイクロレンズアレイを重ねた構造を有し、
前記光に対する前記構造物の焦点面は、前記発光素子と交差しないことを特徴とする発光装置。 - 第1の基板と、前記第1の基板と対向する第2の基板とを有し
前記第1の基板は、第1の電極と、有機化合物を含む層と、第2の電極とを有する発光素子を有し、
前記第2の基板は、配線と、構造物と、を有し、
前記第2の電極は、前記配線と電気的に接続されており、
前記構造物は、前記発光素子からの光を拡散する機能を有し、
前記構造物は、異なる形状の二種類のマイクロレンズアレイを重ねた構造を有し、
前記光に対する前記構造物の焦点面は、前記発光素子と交差せず、
前記発光素子からの光を前記第2の基板側から見たときに、発光しない領域の視認を防止する機能を有することを特徴とする発光装置。
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KR20120109302A (ko) | 2012-10-08 |
US10177335B2 (en) | 2019-01-08 |
JP2012216514A (ja) | 2012-11-08 |
US9634280B2 (en) | 2017-04-25 |
TW201301576A (zh) | 2013-01-01 |
KR101890876B1 (ko) | 2018-08-22 |
US20120244643A1 (en) | 2012-09-27 |
US20170222174A1 (en) | 2017-08-03 |
TWI578568B (zh) | 2017-04-11 |
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