KR102469187B1 - 표시 장치 및 그 제조 방법 - Google Patents
표시 장치 및 그 제조 방법 Download PDFInfo
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- KR102469187B1 KR102469187B1 KR1020180105501A KR20180105501A KR102469187B1 KR 102469187 B1 KR102469187 B1 KR 102469187B1 KR 1020180105501 A KR1020180105501 A KR 1020180105501A KR 20180105501 A KR20180105501 A KR 20180105501A KR 102469187 B1 KR102469187 B1 KR 102469187B1
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- 238000000034 method Methods 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000004065 semiconductor Substances 0.000 claims abstract description 153
- 239000000463 material Substances 0.000 claims abstract description 87
- 239000000758 substrate Substances 0.000 claims abstract description 26
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 284
- 229920002120 photoresistant polymer Polymers 0.000 claims description 53
- 238000005530 etching Methods 0.000 claims description 34
- 239000011229 interlayer Substances 0.000 claims description 26
- 239000001257 hydrogen Substances 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004380 ashing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000010408 film Substances 0.000 description 55
- 239000003990 capacitor Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 7
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- 239000011787 zinc oxide Substances 0.000 description 5
- SAXBKEIWUBFTCT-UHFFFAOYSA-N [Hf+4].[O-2].[Zn+2].[O-2].[O-2] Chemical compound [Hf+4].[O-2].[Zn+2].[O-2].[O-2] SAXBKEIWUBFTCT-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 101150037603 cst-1 gene Proteins 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- YSRUGFMGLKANGO-UHFFFAOYSA-N zinc hafnium(4+) indium(3+) oxygen(2-) Chemical compound [O-2].[Zn+2].[In+3].[Hf+4] YSRUGFMGLKANGO-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- -1 SF 6 Chemical compound 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 2
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 description 2
- 241001101998 Galium Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- H10D86/421—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer
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Abstract
Description
도 2는 도 1에 따른 표시 장치의 하나의 화소의 등가 회로도이다.
도 3은 도 1에 따른 표시 장치에 포함된 트랜지스터의 단면의 일 예를 나타낸 도면이다.
도 4 내지 도 13은 본 발명의 일 실시예에 따른 표시 장치의 제조 방법을 개략적은 도시한 단면도이다.
도 14는 본 발명의 일 실시예에 따른 표시 장치의 하나의 화소의 등가 회로도이다.
120s: 스위칭 반도체층 121: 게이트선
121d: 구동 중간 영역 130: 스위칭 채널층
130a: 제2 반도체 물질층 150d; 구동 게이트 전극
150s: 스위칭 게이트 전극 171: 데이터선
171d: 구동 드레인 전극 171s: 스위칭 드레인 전극
172: 구동 전압선 172d: 구동 드레인 전극
172s: 구동 소스 전극 200: 마스크
Claims (20)
- 표시 영역 및 비표시 영역을 포함하는 기판,
상기 비표시 영역의 상기 기판 위에 위치하고, 게이트 신호를 생성하여 상기 표시 영역에 게이트 신호를 출력하는 복수의 스테이지를 포함하는 게이트 구동부,
상기 표시 영역의 상기 기판 위에 위치하는 스위칭 트랜지스터 및 구동 트랜지스터, 그리고
상기 구동 트랜지스터에 연결되는 발광 다이오드를 포함하고,
각 상기 스테이지는 복수의 트랜지스터를 포함하고,
상기 스테이지에 포함된 트랜지스터의 채널층 및 상기 구동 트랜지스터의 채널층은 산화물 반도체를 포함하고,
상기 스테이지에 포함된 트랜지스터의 채널층의 물질은 상기 구동 트랜지스터의 채널층의 물질과 서로 다르고,
상기 스테이지에 포함된 트랜지스터의 채널층은 주석을 포함하는 표시 장치. - 제1항에서,
상기 스위칭 트랜지스터의 채널층의 물질은 상기 스테이지에 포함된 트랜지스터의 채널층의 물질과 동일한 표시 장치. - 제2항에서,
상기 스테이지에 포함된 트랜지스터의 채널층과 상기 구동 트랜지스터의 채널층은 서로 다른 층에 위치하는 표시 장치. - 제3항에서,
상기 스위칭 트랜지스터의 채널층과 상기 스테이지에 포함된 트랜지스터의 채널층은 동일한 층에 위치하는 표시 장치. - 제4항에서,
상기 스테이지에 포함된 트랜지스터 및 상기 스위칭 트랜지스터는 각각
상기 기판 위에 위치하고, 스위칭 소스 영역 및 스위칭 드레인 영역을 포함하는 스위칭 반도체층,
상기 스위칭 반도체층 위에 위치하는 스위칭 채널층,
상기 스위칭 채널층 위에 위치하는 게이트 절연막,
상기 게이트 절연막 위에 위치하고, 상기 스위칭 채널층과 중첩하는 스위칭 게이트 전극,
상기 스위칭 소스 영역에 연결되는 스위칭 소스 전극, 그리고
상기 스위칭 드레인 영역에 연결되는 스위칭 드레인 전극을 포함하고,
상기 스위칭 반도체층은 상기 스위칭 소스 영역 및 상기 스위칭 드레인 영역 사이에 위치하는 스위칭 중간 영역을 더 포함하고,
상기 스위칭 채널층은 상기 스위칭 중간 영역과 중첩하는 표시 장치. - 제5항에서,
상기 스테이지에 포함된 트랜지스터의 채널층 및 상기 스위칭 트랜지스터의 채널층은 각각 상기 스위칭 채널층인 표시 장치. - 제6항에서,
상기 구동 트랜지스터는
상기 기판 위에 위치하고, 구동 소스 영역, 구동 드레인 영역, 그리고 상기 구동 소스 영역 및 상기 구동 드레인 영역 사이에 위치하는 구동 중간 영역을 포함하는 구동 반도체층,
상기 구동 반도체층 위에 위치하는 상기 게이트 절연막,
상기 게이트 절연막 위에 위치하고, 상기 구동 반도체층과 중첩하는 구동 게이트 전극,
상기 구동 소스 영역에 연결되는 구동 소스 전극, 그리고
상기 구동 드레인 영역에 연결되는 구동 드레인 전극을 포함하는 표시 장치. - 제7항에서,
상기 구동 트랜지스터의 채널층은 상기 구동 중간 영역인 표시 장치. - 제8항에서,
상기 스위칭 중간 영역의 물질은 상기 구동 중간 영역의 물질과 동일한 표시 장치. - 표시 영역 및 비표시 영역을 포함하는 기판, 상기 비표시 영역의 상기 기판 위에 위치하고, 게이트 신호를 생성하여 상기 표시 영역에 게이트 신호를 출력하는 복수의 스테이지를 포함하는 게이트 구동부, 상기 표시 영역의 상기 기판 위에 위치하는 스위칭 트랜지스터 및 구동 트랜지스터, 그리고 상기 구동 트랜지스터에 연결되는 발광 다이오드를 포함하는 표시 장치의 제조 방법에 있어서,
상기 기판 위에 제1 반도체 물질층 및 제2 반도체 물질층을 차례로 형성하는 단계,
상기 제1 반도체 물질층을 식각하여 스위칭 반도체층 및 구동 반도체층을 형성하고, 상기 제2 반도체 물질층을 식각하여 상기 스위칭 반도체층과 중첩하는 스위칭 채널층을 형성하는 단계,
상기 기판, 상기 스위칭 반도체층, 상기 구동 반도체층 및 상기 스위칭 채널층 위에 게이트 절연막 물질층을 형성하는 단계,
상기 게이트 절연막 물질층 위에 상기 스위칭 채널층과 중첩하는 스위칭 게이트 전극 및 상기 구동 반도체층과 중첩하는 구동 게이트 전극을 형성하는 단계,
상기 스위칭 게이트 전극 및 상기 구동 게이트 전극을 마스크로 하여 상기 게이트 절연막 물질층 식각하여 게이트 절연막을 형성하는 단계,
상기 스위칭 반도체층, 상기 구동 반도체층, 상기 스위칭 게이트 전극 및 상기 구동 게이트 전극 위에 층간 절연막을 형성하는 단계,
상기 층간 절연막 위에 스위칭 소스 전극, 스위칭 드레인 전극, 구동 소스 전극 및 구동 드레인 전극을 형성하는 단계, 그리고
상기 구동 드레인 전극에 연결되는 상기 발광 다이오드를 형성하는 단계를 포함하고,
상기 제1 반도체 물질층 및 상기 제2 반도체 물질층은 산화물 반도체를 포함하고,
상기 제1 반도체 물질층 의 물질은 상기 제2 반도체 물질층의 물질은 서로 다르고,
상기 제2 반도체 물질층은 주석을 포함하는 표시 장치의 제조 방법. - 제10항에서,
상기 스위칭 반도체층 및 상기 구동 반도체층을 형성하는 단계와 상기 스위칭 채널층을 형성하는 단계는
상기 제2 반도체 물질층 위에 제1 감광막을 형성하는 단계,
마스크를 사용하여 상기 제1 감광막을 노광 및 현상하여 제2 감광막 및 제3 감광막을 형성하는 단계,
제1 식각 공정으로 상기 제1 반도체 물질층 및 상기 제2 반도체 물질층을 식각하는 단계,
상기 제2 감광막 및 상기 제3 감광막을 애슁 처리하여 제4 감광막을 형성하는 단계,
제2 식각 공정으로 상기 제2 반도체 물질층을 식각하는 단계,
상기 제4 감광막을 제거하는 단계를 포함하는 표시 장치의 제조 방법. - 제11항에서,
상기 마스크는 차광 영역, 투과 영역 및 반투과 영역을 포함하는 표시 장치의 제조 방법. - 제12항에서,
상기 제1 식각 공정은 상기 제2 감광막 및 상기 제3 감광막을 마스크로 하여 상기 제1 반도체 물질층 및 상기 제2 반도체 물질층을 식각하는 것을 포함하고,
상기 제1 반도체 물질층의 식각으로 상기 스위칭 반도체층 및 상기 구동 반도체층을 형성하는 표시 장치의 제조 방법. - 제13항에서,
상기 제4 감광막을 형성하는 단계에서, 상기 제3 감광막이 제거되고, 상기 제2 감광막의 일부가 제거되는 표시 장치의 제조 방법. - 제14항에서,
상기 제2 식각 공정은 상기 제4 감광막을 마스크로 하여 상기 제2 반도체 물질층을 식각하여 상기 스위칭 채널층을 형성하는 표시 장치의 제조 방법. - 제15항에서,
상기 층간 절연막을 형성하는 단계는
열처리를 실시하여, 상기 층간 절연막의 수소가 상기 스위칭 반도체층 및 상기 구동 반도체층으로 확산하는 것을 포함하는 표시 장치의 제조 방법. - 제16항에서,
각 상기 스테이지는 복수의 트랜지스터를 포함하고,
상기 스테이지에 포함된 트랜지스터의 구조와 상기 스위칭 트랜지스터의 구조는 동일한 표시 장치의 제조 방법. - 제17항에서,
상기 스위칭 트랜지스터는 상기 스위칭 반도체층, 상기 스위칭 채널층, 상기 스위칭 게이트 전극, 상기 스위칭 소스 전극 및 상기 스위칭 드레인 전극을 포함하고,
상기 구동 트랜지스터는 상기 구동 반도체층, 상기 구동 게이트 전극, 상기 구동 소스 전극 및 상기 구동 드레인 전극을 포함하는 표시 장치의 제조 방법. - 제18항에서,
상기 스위칭 트랜지스터의 채널층은 상기 스위칭 채널층인 표시 장치의 제조 방법. - 제19항에서,
상기 스위칭 반도체층은 상기 스위칭 채널층과 중첩하는 스위칭 중간 영역을 포함하고,
상기 상기 구동 반도체층은 상기 구동 게이트 전극과 중첩하는 구동 중간 영역을 포함하고,
상기 구동 트랜지스터의 채널층은 상기 구동 중간 영역인 표시 장치의 제조 방법.
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