JP2008130539A - アクティブマトリックス有機発光ディスプレイの画素構造とその製造方法 - Google Patents
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- 239000000758 substrate Substances 0.000 claims abstract description 40
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 239000010409 thin film Substances 0.000 claims abstract description 9
- 238000009825 accumulation Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 17
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical group C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 claims description 15
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 15
- 229920005591 polysilicon Polymers 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 12
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 238000005224 laser annealing Methods 0.000 claims description 4
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- 238000005229 chemical vapour deposition Methods 0.000 claims description 2
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- 230000015572 biosynthetic process Effects 0.000 description 15
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1255—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs integrated with passive devices, e.g. auxiliary capacitors
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
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- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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Abstract
【解決手段】アクティブマトリックス有機発光ディスプレイの画素構造とその製造方法が提供され、その方法中、透明電極と有機発光ダイオードと反射電極とが基板上に形成された後、少なくとも1つのスイッチング薄膜トランジスターと、少なくとも1つの駆動薄膜トランジスターと、走査線と、データ線と、蓄積キャパシターとが基板上に形成される。
【選択図】図4
Description
従来技術により遭遇する問題点を解決するために、この発明は、AMOLEDディスプレイの画素構造の製造方法とAMOLEDディスプレイの画素構造とを提供する。この製造方法は、先ずOLEDを形成することから初めて、TFTの形成を後続させる。この発明により開示される画素構造は、液晶ディスプレイ(liquid crystal display = LCD)を使用したカラーフィルター上の薄膜トランジスター構造(TFT-array on color filter = TOC or AOC)に類似するものである。
110,250 基板
120,220 駆動薄膜トランジスター
130,240 有機発光ダイオード
132 陰電極
134,244 有機発光層
136 陽電極
140,150,260 発光方向
202 データ線
204 走査線
210 スイッチング薄膜トランジスター
212 第1ゲート
214 第1ソース
216 第1ドレイン
222 第2ゲート
224 第2ソース
226 第2ドレイン
223 チャネル層
223a オーミックコンタクト層
228 ゲート絶縁層
230 蓄積キャパシター
242 透明電極
246 反射電極
270 絶縁層
280 緩衝層
290 コンタクト
300 保護層
310 平坦層
320 基板
R 赤色光有機発光層
G 緑色光有機発光層
B 青色光有機発光層
Claims (21)
- アクティブマトリックス有機発光ディスプレイ(active matrix organic light emitting display = AMOLED)の製造方法であって、
(a)基板上に有機発光ダイオード(organic light emitting diode = OLED)を形成するものであり、透明電極と、有機発光層と、反射電極とを含み、そのうち、前記有機発光層が前記透明電極および前記反射電極の間に配置されること、ならびに
(b)前記基板上に少なくとも1つのスイッチングTFT(薄膜トランジスター)と、少なくとも1つの駆動TFT(薄膜トランジスター)と、走査線と、データ線と、蓄積キャパシターとを形成するものであり、そのうち、前記スイッチングTFTが第1ゲートと第1ソースと第1ドレインとを含み、前記第1ゲートが前記走査線に接続され、前記第1ソースが前記データ線に結合され、そのうち、駆動TFTが第2ゲートと第2ソースと第2ドレインとを含み、前記第2ゲートが前記第1ドレインに結合されるとともに、前記蓄積キャパシターが前記第1ドレインおよび前記第2ゲートに電気接続され、前記第2ドレインが前記反射電極に結合されること
を含むアクティブマトリックス有機発光ディスプレイの製造方法。 - 前記駆動TFTのチャネル層および前記スイッチングTFTのチャネル層を形成するための製造方法が、
誘導結合プラズマ化学気相堆積(inductively coupled plasma chemical vapor deposition = ICP-CVD)によりシリコン層を製造すること、ならびに
エキシマレーザーアニーリング(excimer laser annealing = ELA)により前記シリコン層を結晶させてポリシリコン層を形成すること
を含む請求項1記載の方法。 - ICP−CVP用の製造パラメーターが、
100℃〜200℃の範囲にわたる操作温度と、
10mT〜30mTの範囲にわたる操作圧力と、
15:3〜25:3のヘリウム対シランの組成比率における反応ガスと
を含む請求項2記載の方法。 - ステップ(a)の前において、さらに、前記基板上にカラー転換媒体またはカラーフィルターを形成することを含む請求項1記載の方法。
- 前記第2ゲートが、前記第2ソースおよび前記第2ドレインを形成する前に形成される請求項1記載の方法。
- 前記第2ゲートが、前記第2ソースおよび前記第2ドレインを形成した後に形成される請求項1記載の方法。
- 前記透明電極と前記有機発光層と前記反射電極とが、順番に形成される請求項1記載の方法。
- ステップ(a)の後およびステップ(b)の前において、さらに、前記基板上に絶縁層を形成することを含む請求項1記載の方法。
- 前記絶縁層の材料が、ベンゾシクロブタン(benzocyclobutene = BCB)である請求項8記載の方法。
- 前記絶縁層を形成するステップが、
絶縁材料層を前記基板上にスピンコーティングにより形成すること、および
前記絶縁材料層を熱固化によって処理すること
を含む請求項8記載の方法。 - ステップ(b)の前において、さらに、前記絶縁層上に緩衝層を形成することを含む請求項8記載の方法。
- 前記緩衝層の材料が窒化シリコンである請求項11記載の方法。
- アクティブマトリックス有機発光ディスプレイの画素構造であって、
基板と、
前記基板上に配置される有機発光ダイオードであり、
透明電極と、
有機発光層と、
反射電極とを含み、そのうち、前記透明電極が前記基板および前記有機発光層間に配置されるとともに、前記有機発光層が前記透明電極ならびに前記反射電極間に配置される有機発光ダイオードと、
前記有機発光ダイオード上方に配置される走査線と、
前記有機発光ダイオード上方に配置されるデータ線と、
前記有機発光ダイオード上方に配置される少なくとも1つのスイッチングTFTであり、第1ゲートと第1ソースと第1ドレインとを含み、そのうち、前記第1ゲートが前記走査線に結合されるとともに、前記第1ソースが前記データ線に結合されるスイッチングTFTと、
前記有機発光ダイオード上方に配置される少なくとも1つの駆動TFTであり、第2ゲートと第2ソースと第2ドレインとを含み、そのうち、前記第2ゲートが前記第1ドレインに結合されるとともに、前記第2ドレインが前記反射電極に結合される駆動TFTと、
前記有機発光層上方に配置されるとともに、前記第1ドレインおよび前記第2ゲートに電気接続される蓄積キャパシターと
を含むアクティブマトリックス有機発光ディスプレイの画素構造。 - 前記スイッチングTFTのチャネル層および前記駆動TFTのチャネル層が、ポリシリコンで形成される請求項13記載の画素構造。
- さらに、前記基板および透明電極間にカラー転換媒体またはカラーフィルターを形成することを含む請求項13記載の画素構造。
- 前記第2ゲートが前記第2ソースおよび前記第2ドレインの下方かつ間に配置される請求項13記載の画素構造。
- 前記第2ゲートが前記第2ソースおよび前記第2ドレインの上方かつ間に配置される請求項13記載の画素構造。
- さらに、絶縁層を含み、前記有機発光層および駆動TFT間ならびに前記反射電極および前記駆動TFT間に配置する請求項13記載の画素構造。
- 前記絶縁層の材料が、ベンゾシクロブタン(benzocyclobutene = BCB)である請求項18記載の画素構造。
- さらに、前記絶縁層および前記駆動TFT間に配置される緩衝層を含む請求項18記載の画素構造。
- 前記緩衝層の材料が、窒化シリコンである請求項20記載の画素構造。
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TW095142537A TWI364839B (en) | 2006-11-17 | 2006-11-17 | Pixel structure of active matrix organic light emitting display and fabrication method thereof |
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JP (1) | JP2008130539A (ja) |
TW (1) | TWI364839B (ja) |
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