KR20210109090A - 표시 장치 및 그 제조 방법 - Google Patents
표시 장치 및 그 제조 방법 Download PDFInfo
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- KR20210109090A KR20210109090A KR1020200023624A KR20200023624A KR20210109090A KR 20210109090 A KR20210109090 A KR 20210109090A KR 1020200023624 A KR1020200023624 A KR 1020200023624A KR 20200023624 A KR20200023624 A KR 20200023624A KR 20210109090 A KR20210109090 A KR 20210109090A
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- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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- H10K71/231—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers
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- H10K71/231—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers
- H10K71/233—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers by photolithographic etching
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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
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
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- H10D30/031—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT]
- H10D30/0312—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] characterised by the gate electrodes
- H10D30/0314—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] characterised by the gate electrodes of lateral top-gate TFTs comprising only a single gate
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- H10D30/031—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT]
- H10D30/0321—Manufacture or treatment of FETs having insulated gates [IGFET] of thin-film transistors [TFT] comprising silicon, e.g. amorphous silicon or polysilicon
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- H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
- H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
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- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6741—Group IV materials, e.g. germanium or silicon carbide
- H10D30/6743—Silicon
- H10D30/6745—Polycrystalline or microcrystalline silicon
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- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
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- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
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- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0221—Manufacture or treatment of multiple TFTs comprising manufacture, treatment or patterning of TFT semiconductor bodies
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Abstract
Description
도 2 내지 도 6, 도 8 내지 도 11 및 도 13 내지 도 33은 본 발명의 일 실시예에 따른 표시 장치의 제조 방법을 도시한 단면도들이다.
Claims (20)
- 고분자 물질을 포함하는 지지 기판;
상기 지지 기판의 상면에 결합되며, 고분자 물질을 포함하는 유기막 및 상기 유기막을 커버하며 상기 유기막 외측으로 연장되는 무기 배리어막을 포함하는 베이스 기판;
상기 베이스 기판의 표시 영역에 배치되는 화소 어레이;
상기 베이스 기판의 벤딩 영역에 배치며 상기 화소 어레이와 전기적으로 연결되는 전달 배선; 및
상기 베이스 기판의 벤딩 영역에서 상기 전달 배선 하부에 배치되며 상기 베이스 기판의 유기막과 접촉하는 유기 충진부를 포함하는 표시 장치. - 제1항에 있어서, 상기 무기 배리어막의 상기 유기막 외측으로 돌출된 부분의 길이는 3mm 이상인 것을 특징으로 하는 표시 장치.
- 제1항에 있어서, 상기 화소 어레이는, 유기 발광 다이오드 및 상기 유기 발광 다이오드를 구동하기 위한 트랜지스터를 포함하는 것을 특징으로 하는 표시 장치.
- 제3항에 있어서, 상기 트랜지스터는, 다결정 실리콘 채널을 포함하는 제1 트랜지스터 및 금속 산화물 채널을 포함하는 제2 트랜지스터를 포함하는 것을 특징으로 하는 표시 장치.
- 캐리어 기판 위에 고분자 물질을 포함하는 유기막 및 상기 유기막을 커버하며 상기 유기막 외측으로 연장되는 무기 배리어막을 포함하는 베이스 기판을 형성하는 단계;
상기 베이스 기판의 표시 영역 위에 반도체 물질을 포함하는 제1 액티브 패턴을 형성하는 단계;
상기 제1 액티브 패턴 위에 제1 층간 절연층을 형성하는 단계;
상기 베이스 기판의 표시 영역에서 상기 제1 층간 절연층 위에 상기 제1 액티브 패턴과 다른 반도체 물질을 포함하는 제2 액티브 패턴을 형성하는 단계;
상기 제2 액티브 패턴 위에 제2 층간 절연층을 형성하는 단계;
상기 제2 층간 절연층 위에 포토레지스트 필름을 형성하는 단계;
상기 제1 액티브 패턴 또는 상기 제2 액티브 패턴과 중첩하는 제1 투과 영역 및 상기 캐리어 기판의 가장자리와 이격되고 상기 유기막의 가장자리와 이격되는 제2 투과 영역을 포함하는 제1 마스크를 통해 상기 포토레지스트 필름을 노광하는 단계;
상기 캐리어 기판의 가장자리와 중첩하는 상기 포토레지스트 필름의 에지 영역을 노광하는 단계;
상기 노광된 포토레지스트 필름을 현상하여, 상기 제1 액티브 패턴 또는 상기 제2 액티브 패턴과 중첩하는 제1 개구 영역을 포함하며, 상기 캐리어 기판의 가장자리에 인접한 영역을 노출하는 제1 포토레지스트 패턴을 형성하는 단계; 및
상기 제1 포토레지스트 패턴을 마스크로 이용하여 상기 제1 액티브 패턴 또는 상기 제2 액티브 패턴을 노출하는 콘택홀을 형성하는 단계를 포함하는 표시 장치의 제조 방법. - 제5항에 있어서, 상기 제1 마스크는 상기 베이스 기판의 벤딩 영역과 중첩하는 제3 투과 영역을 더 포함하고, 상기 제1 포토레지스트 패턴은 상기 벤딩 영역과 중첩하는 제2 개구 영역을 더 포함하며,
상기 콘택홀이 형성될 때, 상기 제2 개구 영역에 의해 노출된 상기 제2 층간 절연층이 식각되는 것을 특징으로 하는 표시 장치의 제조 방법. - 제6항에 있어서, 상기 콘택홀은 제1 액티브 패턴을 노출하고,
상기 제2 층간 절연층 위에 상기 제2 액티브 패턴과 중첩하는 제1 개구 영역과 상기 벤딩 영역과 중첩하는 제2 개구 영역을 포함하는 제2 포토레지스트 패턴을 형성하는 단계;
상기 제2 포토레지스트 패턴을 마스크로 이용하여 상기 제2 액티브 패턴을 노출하는 콘택홀을 형성하는 단계;
상기 제1 액티브 패턴과 전기적으로 접촉하는 제1 소스 전극, 상기 제1 소스 전극과 이격되며 상기 제1 액티브 패턴과 전기적으로 접촉하는 제1 드레인 전극, 상기 제2 액티브 패턴과 전기적으로 접촉하는 제2 소스 전극, 상기 제2 소스 전극과 이격되며 상기 제2 액티브 패턴과 전기적으로 접촉하는 제2 드레인 전극을 포함하는 제1 소스 금속 패턴을 형성하는 단계;
상기 제1 소스 금속 패턴을 커버하며 상기 벤딩 영역과 중첩하는 개구 영역을 포함하는 제3 포토레지스트 패턴을 형성하는 단계; 및
상기 제3 포토레지스트 패턴을 마스크로 이용하여 상기 벤딩 영역에서 상기 무기 배리어막을 식각하여 상기 유기막을 노출하는 단계를 더 포함하는 것을 특징으로 하는 표시 장치의 제조 방법. - 제7항에 있어서, 상기 노출된 유기막 위에 유기 충진부를 형성하는 단계를 더 포함하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제8항에 있어서, 상기 유기 충진부 위에 배치되는 전달 배선 및 상기 제1 드레인 전극과 전기적으로 접촉하는 연결 전극을 포함하는 제2 소스 금속 패턴을 형성하는 단계를 더 포함하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제7항에 있어서, 상기 벤딩 영역에서 상기 무기 배리어막을 식각한 후, 상기 캐리어 기판 상에 잔류하며 상기 유기막 외측으로 돌출된 상기 무기 배리어막의 길이는 3mm 이상인 것을 특징으로 하는 표시 장치의 제조 방법.
- 제5항에 있어서, 상기 제2 투과 영역은 상기 유기막 외측으로 연장되는 무기 배리어막과 중첩하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제11항에 있어서, 상기 제2 투과 영역은 상기 캐리어 기판의 가장자리를 따라 연장되는 형상을 갖는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제5항에 있어서, 상기 포토레지스트 필름의 에지 영역은 마스크 없이 노광되는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제13항에 있어서, 상기 노광된 에지 영역은 상기 제2 투과 영역을 통해 노광된 영역과 부분적으로 중첩하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제14항에 있어서, 상기 노광된 에지 영역은 상기 베이스 기판을 둘러싸는 프레임 형상을 갖는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제5항에 있어서, 상기 제1 액티브 패턴은 다결정 실리콘을 포함하고, 상기 제2 액티브 패턴은 금속 산화물을 포함하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제5항에 있어서, 상기 베이스 기판은 복수의 유기막을 포함하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 제5항에 있어서, 상기 베이스 기판으로부터 상기 캐리어 기판을 분리하는 단계를 더 포함하는 것을 특징으로 하는 표시 장치의 제조 방법.
- 캐리어 기판 위에 고분자 물질을 포함하는 유기막 및 상기 유기막을 커버하며 상기 유기막 외측으로 연장되는 무기 배리어막을 포함하는 베이스 기판을 형성하는 단계;
상기 베이스 기판의 표시 영역 위에 반도체 물질을 포함하는 액티브 패턴을 형성하는 단계;
상기 액티브 패턴 위에 무기 물질을 포함하는 층간 절연층을 형성하는 단계;
상기 층간 절연층 위에 포토레지스트 필름을 형성하는 단계;
상기 액티브 패턴과 중첩하는 제1 투과 영역 및 상기 캐리어 기판의 가장자리와 이격되고 상기 유기막의 가장자리와 이격되는 제2 투과 영역을 포함하는 마스크를 통해 상기 포토레지스트 필름을 노광하는 단계;
상기 캐리어 기판의 가장자리와 중첩하는 상기 포토레지스트 필름의 에지 영역을 노광하는 단계;
상기 노광된 포토레지스트 필름을 현상하여, 상기 액티브 패턴과 중첩하는 제1 개구 영역을 포함하며, 상기 캐리어 기판의 가장자리에 인접한 영역을 노출하는 제1 포토레지스트 패턴을 형성하는 단계; 및
상기 제1 포토레지스트 패턴을 마스크로 이용하여 상기 액티브 패턴을 노출하는 콘택홀을 형성하는 단계를 포함하는 표시 장치의 제조 방법. - 제19항에 있어서, 상기 제2 투과 영역은 상기 유기막 외측으로 연장되는 무기 배리어막과 중첩하고, 상기 포토레지스트 필름의 노광된 에지 영역은 상기 제2 투과 영역을 통해 노광된 영역과 부분적으로 중첩하는 것을 특징으로 하는 표시 장치의 제조 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020200023624A KR20210109090A (ko) | 2020-02-26 | 2020-02-26 | 표시 장치 및 그 제조 방법 |
US17/142,818 US11758798B2 (en) | 2020-02-26 | 2021-01-06 | Display device and method of manufacturing the same |
CN202110218775.6A CN113314570A (zh) | 2020-02-26 | 2021-02-26 | 显示装置及其制造方法 |
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US10283574B2 (en) * | 2016-03-25 | 2019-05-07 | Samsung Display Co., Ltd. | Display apparatus with bending area capable of minimizing manufacturing defects |
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