Abstract:
PURPOSE: A thin film transistor and an organic light emitting display device with the same are provided to form an active layer by adding a material whose atom radius is similar to Zn or Sn to an oxide semiconductor to form an active layer, thereby increasing reliability of the oxide semiconductor. CONSTITUTION: A buffer layer(12) is formed on a substrate(10). An oxide semiconductor layer(18) is composed of source/drain areas(18b,18c) and a channel area(18a). A gate electrode(14) forms an area overlapped with the channel area. A gate insulating film(16) is formed between the oxide semiconductor and the gate electrode. Source/drain electrodes(20a,20b) are respectively electrically connected to the source/drain areas of the oxide semiconductor layer.
Abstract:
본 발명은 산화물 반도체를 활성층으로 하는 박막 트랜지스터, 그의 제조 방법 및 박막 트랜지스터를 구비하는 평판 표시 장치에 관한 것으로, 본 발명의 박막 트랜지스터는 기판 상에 형성된 게이트 전극, 게이트 절연막에 의해 게이트 전극과 절연되며 채널 영역, 소스 영역 및 드레인 영역을 제공하는 산화물 반도체층, 그리고 소스 영역 및 드레인 영역과 접촉되는 소스 전극 및 드레인 전극을 포함한다. 산화물 반도체층이 지르코늄(Zr)을 포함하는 InZnO(IZO)층으로 이루어지고, Zr에 의해 IZO층의 케리어 농도가 1e+13 내지 1e+18개수/㎤로 조절된다. 산화물 반도체, InZnO(IZO), 지르코늄(Zr), 케리어 농도
Abstract:
PURPOSE: A flat panel display for including a thin film transistor, a manufacturing method thereof and a thin film transistor are provided to physically control the charge trapping and the active layer protected at the same time. CONSTITUTION: A source electrode and a drain electrode are formed on a substrate. A part of an activation layer(13) is overlapped with the source/drain electrode. The active layer is included of the oxide semiconductor. A gate electrode is insulated on a gate insulating layer. An interface stabilization layer(14) is formed in the upper side and lower surface of the active layer.
Abstract:
PURPOSE: A flat panel display for including a TFT(Thin Film Transistor) for performing an ohmic contact of a metal electrode and an oxide semiconductor layer, and a manufacturing method thereof are provided to form an ohmic contact layer with high carrier concentration by processing the oxide semiconductor layer through a plasma. CONSTITUTION: A gate electrode(14) is formed on a substrate. An oxide semiconductor layer(18a) comprises a channel, a source and a drain region insulated with a gate insulating layer(16). A source and drain electrode are connected to source and drain region. An ohmic contact layer(18b) is allowed in between a source and drain region and source and drain electrode. The ohmic contact layer includes the oxide semiconductor layer with carrier concentration high than source and drain region.
Abstract:
PURPOSE: A semiconductor device and a flat panel display device with the same are provided to prevent electric characteristics from lowering due to damage to an oxide semiconductor layer, thereby obtaining capacitance of a capacitor without increasing surface area. CONSTITUTION: A semiconductor device includes a substrate(10), a lower electrode(14b), an insulating layer(16), an upper electrode(18b), a protective film(20), a source electrode(22a), and a drain electrode(22b). The substrate includes the first area and the second area. The lower electrode is formed on a gate electrode(14a) and a substrate of the second area. The insulating layer is formed on an upper part of the semiconductor device including the gate electrode and the lower electrode. The upper electrode is made of a channel area, an activation layer(18a) and an oxide semiconductor on the insulating layer of the lower electrode. The protective layer is patterned to expose an upper electrode and the source and drain areas.
Abstract:
본 발명은 외부로부터의 수분이나 산소 등의 침투를 방지하고 대형 표시장치에의 적용이 용이하며 양산성이 뛰어난 유기 발광 표시장치 및 그 제조방법을 제공하기 위한 것으로, 게이트 전극, 상기 게이트 전극과 절연된 활성층, 상기 게이트 전극과 절연되고 상기 활성층에 콘택되는 소스 및 드레인 전극, 및 상기 소스 전극 및 드레인 전극과 상기 활성층의 사이에 개재된 절연층을 포함하는 박막 트랜지스터; 및 상기 박막 트랜지스터에 전기적으로 연결된 유기 발광 소자;를 포함하고, 상기 절연층은, 상기 활성층에 접하는 제1절연층; 및 상기 제1절연층 상에 금속 산화물로 구비된 제2절연층;을 포함하는 유기 발광 표시장치 및 그 제조방법에 관한 것이다.
Abstract:
PURPOSE: An organic light emitting display device and manufacturing method thereof are provided to cover an active layer by an insulating layer to increase the barrier effect for the active layer, thereby sufficiently protecting the active layer from moisture and oxygen. CONSTITUTION: A gate electrode is formed on a substrate. A gate insulating layer covers the gate electrode. A patterned active layer(23) is formed on the gate insulating layer. An insulating layer(24) is formed on the gate insulating layer to cover the active layer. A source electrode(25) and a drain electrode(26) contacts the active layer. The source electrode and the drain electrode are formed on the insulating layer.
Abstract:
본 발명은 아연주석산화물(ZnSnO)로 구현되는 산화물 반도체에 산소와의 전기 음성도 차이가 크고 원자반경이 상기 Zn 또는 Sn과 유사한 전이 금속 물질을 첨가하여 활성층을 형성함으로써, 캐리어의 농도를 조절하고 산화물 반도체의 신뢰성을 향상시킴을 통해 안정적인 신뢰성 및 전기적 특성을 구현하는 박막트랜지스터 및 이를 구비한 유기전계 발광 표시장치를 제공한다.
Abstract:
PURPOSE: A thin film transistor, a method of manufacturing the thin film transistor and an organic electro-luminiscent device having the thin film transistor are provided to increase the stability of a device by making the concentration of a Hf and an Zn inside an HfInZnO group oxide semiconductor layer slope. CONSTITUTION: A gate electrode(13) is formed on a substrate. A gate insulating layer(15) is formed on the gate electrode and an exposed substrate. An oxide semiconductor layer is formed in the gate insulating layer and is opposite to the gate electrode. The oxide semiconductor layer is made of the HfInZnO system oxide semiconductor. Source/drain regions(19) are extended from the both sides of the oxide semiconductor layer to the gate insulating layer. Third-fourth oxide semiconductor layer are formed on the oxide semiconductor layer. The oxide semiconductor layer is arranged of the fourth layer above the third layer above the gate insulating layer and the third layer. The concentration of the Zn of the fourth layer is higher than that of the third layer.