JP6872133B2 - 表示装置、および電子機器 - Google Patents
表示装置、および電子機器 Download PDFInfo
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- JP6872133B2 JP6872133B2 JP2018514136A JP2018514136A JP6872133B2 JP 6872133 B2 JP6872133 B2 JP 6872133B2 JP 2018514136 A JP2018514136 A JP 2018514136A JP 2018514136 A JP2018514136 A JP 2018514136A JP 6872133 B2 JP6872133 B2 JP 6872133B2
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- drive transistor
- display device
- activation region
- opening
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- 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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- H10K59/12—Active-matrix OLED [AMOLED] displays
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Description
1.第1の実施形態
1.1.表示装置の概略構成
1.2.トランジスタの構成
2.第2の実施形態
2.1.トランジスタの構成
2.2.トランジスタの製造方法
2.3.トランジスタの効果
3.まとめ
(1.1.表示装置の概略構成)
まず、図1および図2を参照して、本開示に係る技術が適用される表示装置の概略構成について説明する。図1は、本開示に係る技術が適用される表示装置1の一画素を構成する回路を説明する回路図である。
続いて、図3〜図6を参照して、本開示の第1の実施形態に係る表示装置にて用いられるトランジスタの構成について説明する。図3は、本実施形態に係る表示装置にて用いられる駆動トランジスタ10および選択トランジスタ20の平面構造を説明する説明図である。また、図4は、図3のA切断線による断面図であり、図5は、図3のB切断線による断面図であり、図6は、図3のC切断線による断面図である。
具体的には、図4および図5に示すように、駆動トランジスタ10は、半導体基板100と、半導体基板100に設けられた開口150と、開口150の内部を含む活性化領域115の上に設けられたゲート絶縁膜130と、開口150を埋め込むゲート電極140と、開口150を挟んで活性化領域115の両側に設けられたソース/ドレイン領域120と、ゲート電極140の側面に設けられたサイドウォール絶縁膜160とを備える。また、駆動トランジスタ10が設けられた活性化領域115の周囲には、素子分離層110が設けられる。
また、図6に示すように、選択トランジスタ20は、半導体基板100と、活性化領域215の上に設けられたゲート絶縁膜230と、ゲート絶縁膜230の上に設けられたゲート電極240と、ゲート電極240を挟んで活性化領域215の両側に設けられたソース/ドレイン領域220と、ゲート電極140の側面に設けられたサイドウォール絶縁膜260とを備える。また、選択トランジスタ20が設けられた活性化領域215の周囲には、素子分離層110が設けられる。
(2.1.トランジスタの構成)
続いて、図7〜図15を参照して、本開示の第2の実施形態に係る表示装置にて用いられる駆動トランジスタの構成について説明する。図7は、本実施形態に係る表示装置にて用いられる駆動トランジスタ11および選択トランジスタ20の平面構造を説明する説明図である。図8は、図7のD切断線による断面図である。
次に、図9〜図14を参照して、本実施形態に係るトランジスタの製造方法について説明する。図9〜図14は、本実施形態に係るトランジスタの製造方法の一工程を説明する断面図である。
次に、本実施形態に係る表示装置に用いられる駆動トランジスタ11による効果について説明する。まず、上記の製造方法にて製造した駆動トランジスタ11を用意した。
以上にて説明したように、本開示によれば、表示装置の一画素である有機電界発光素子を駆動させる駆動トランジスタ10にて、占有面積を増加させることなく、実効的なチャネル長を延長することが可能である。具体的には、駆動トランジスタ10にて、活性化領域115を横断する開口150を設け、開口150に沿って半導体基板100の内部に三次元的にチャネルを形成することで、チャネル長を延長することができる。
(1)
半導体基板に設けられた第1導電型の活性化領域、
前記活性化領域を横断して設けられた開口、
前記開口の内部を含む前記活性化領域の上に設けられたゲート絶縁膜、
前記開口を埋め込むゲート電極、
前記開口を挟んで前記活性化領域の両側に設けられた第2導電型の拡散領域、
を有する駆動トランジスタと、
前記駆動トランジスタによって駆動される有機電界発光素子と、
を備える、表示装置。
(2)
前記開口は、直列の配列にて複数設けられる、前記(1)に記載の表示装置。
(3)
前記開口の各々の間には、前記活性化領域よりも高濃度の第1導電型のチャネルストッパ領域が設けられる、前記(2)に記載の表示装置。
(4)
前記チャネルストッパ領域は、前記活性化領域を横断して設けられる、前記(3)に記載の表示装置。
(5)
前記チャネルストッパ領域は、前記半導体基板の内部に設けられる、前記(3)または(4)に記載の表示装置。
(6)
前記チャネルストッパ領域は、前記活性化領域の周囲に設けられた絶縁性の素子分離層よりも深い領域まで設けられる、前記(3)〜(5)のいずれか一項に記載の表示装置。
(7)
前記開口の深さは、300nm以上である、前記(1)〜(6)のいずれか一項に記載の表示装置。
(8)
前記開口は、前記活性化領域の周囲に設けられた絶縁性の素子分離層よりも浅い領域に設けられる、前記(7)に記載の表示装置。
(9)
前記半導体基板は、シリコン基板である、前記(1)〜(8)のいずれか一項に記載の表示装置。
(10)
半導体基板に設けられた第1導電型の活性化領域、
前記活性化領域を横断して設けられた開口、
前記開口の内部を含む前記活性化領域の上に設けられたゲート絶縁膜、
前記開口を埋め込むゲート電極、
前記開口を挟んで前記活性化領域の両側に設けられた第2導電型の拡散領域、
を有する駆動トランジスタと、
前記駆動トランジスタによって駆動される有機電界発光素子と、
を備える表示部を含む、電子機器。
10、11 駆動トランジスタ
20 選択トランジスタ
100 半導体基板
110 素子分離層
115 活性化領域
120 ソース/ドレイン領域
130、131 ゲート絶縁膜
140、141 ゲート電極
150、151、152 開口
160 サイドウォール絶縁膜
170 チャネルストッパ領域
OLED 有機電界発光素子
DTr 駆動トランジスタ
STr 選択トランジスタ
Claims (8)
- 半導体基板に設けられた第1導電型の活性化領域、
前記活性化領域を横断して、直列の配列に複数設けられた開口、
前記開口の各々の間に設けられた、前記活性化領域よりも高濃度の第1導電型のチャネルストッパ領域、
前記開口の内部を含む前記活性化領域の上に設けられたゲート絶縁膜、
前記開口を埋め込むゲート電極、
前記開口を挟んで前記活性化領域の両側に設けられた第2導電型の拡散領域、
を有する駆動トランジスタと、
前記駆動トランジスタによって駆動される有機電界発光素子と、
を備える、表示装置。 - 前記チャネルストッパ領域は、前記活性化領域を横断して設けられる、請求項1に記載の表示装置。
- 前記チャネルストッパ領域は、前記半導体基板の内部に設けられる、請求項1または2に記載の表示装置。
- 前記チャネルストッパ領域は、前記活性化領域の周囲に設けられた絶縁性の素子分離層よりも深い領域まで設けられる、請求項1〜3のいずれか一項に記載の表示装置。
- 前記開口の深さは、300nm以上である、請求項1〜4のいずれか一項に記載の表示装置。
- 前記開口は、前記活性化領域の周囲に設けられた絶縁性の素子分離層よりも浅い領域に設けられる、請求項5に記載の表示装置。
- 前記半導体基板は、シリコン基板である、請求項1〜6のいずれか一項に記載の表示装置。
- 半導体基板に設けられた第1導電型の活性化領域、
前記活性化領域を横断して、直列の配列に複数設けられた開口、
前記開口の各々の間に設けられた、前記活性化領域よりも高濃度の第1導電型のチャネルストッパ領域、
前記開口の内部を含む前記活性化領域の上に設けられたゲート絶縁膜、
前記開口を埋め込むゲート電極、
前記開口を挟んで前記活性化領域の両側に設けられた第2導電型の拡散領域、
を有する駆動トランジスタと、
前記駆動トランジスタによって駆動される有機電界発光素子と、
を備える表示部を含む、電子機器。
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PCT/JP2017/005225 WO2017187720A1 (ja) | 2016-04-28 | 2017-02-14 | 表示装置、および電子機器 |
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KR102573917B1 (ko) * | 2018-06-14 | 2023-09-04 | 엘지디스플레이 주식회사 | 표시 장치 및 이의 제조 방법 |
CN110706603A (zh) * | 2019-11-19 | 2020-01-17 | 江苏上达电子有限公司 | 一种基于柔性封装基板的高分辨率点阵式电子驱动方法 |
TW202137539A (zh) * | 2020-03-17 | 2021-10-01 | 日商索尼半導體解決方案公司 | 攝像裝置及電子機器 |
US20230247864A1 (en) | 2020-05-08 | 2023-08-03 | Sony Group Corporation | Display device and electronic device |
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KR100767377B1 (ko) * | 2001-09-28 | 2007-10-17 | 삼성전자주식회사 | 유기 이.엘 디스플레이 패널과 이를 구비하는 유기 이.엘디스플레이 장치 |
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CN105355564A (zh) * | 2015-12-03 | 2016-02-24 | 友达光电股份有限公司 | 一种薄膜晶体管、制造方法及其液晶显示器 |
CN112614882B (zh) * | 2016-04-28 | 2024-08-09 | 索尼公司 | 显示装置和电子设备 |
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2017
- 2017-02-14 CN CN202011503421.8A patent/CN112614882B/zh active Active
- 2017-02-14 DE DE112017002229.0T patent/DE112017002229T5/de active Pending
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- 2017-02-14 KR KR1020187028834A patent/KR20190003488A/ko not_active Abandoned
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CN109074767A (zh) | 2018-12-21 |
DE112017002229T5 (de) | 2019-01-17 |
KR20190003488A (ko) | 2019-01-09 |
JPWO2017187720A1 (ja) | 2019-02-28 |
US20190139489A1 (en) | 2019-05-09 |
WO2017187720A1 (ja) | 2017-11-02 |
CN112614882A (zh) | 2021-04-06 |
CN109074767B (zh) | 2021-01-12 |
US11100857B2 (en) | 2021-08-24 |
CN112614882B (zh) | 2024-08-09 |
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