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    • 3. 发明公开
    • 라운딩된 게이트를 갖는 박막 트랜지스터의 제조방법
    • 具有圆形栅极的薄膜晶体管的制造方法
    • KR1020120095739A
    • 2012-08-29
    • KR1020110015243
    • 2011-02-21
    • 서울대학교산학협력단
    • 박병국권대웅장지수김장현김상완
    • H01L29/786
    • H01L29/66765H01L21/32134H01L29/42384
    • PURPOSE: A method for manufacturing a thin film transistor having a rounded gate is provided to prevent the generation of hump because an edge part of a gate electrode is rounded by an undercut phenomenon. CONSTITUTION: A first conductive film is evaporated on an insulation board(10). After the first conductive film is dry-etched, a wet-etching process is implemented for a constant time to form a gate(26). A gate insulation layer(40) is formed on the gate and the board. A semiconductor material is evaporated on the gate insulation layer. A source section(52), a drain section(54), and a channel section(56) are formed on the semiconductor material. A source electrode(72) and a drain electrode(74) are respectively formed on the source and the drain sections.
    • 目的:提供一种用于制造具有圆形栅极的薄膜晶体管的方法,以防止由于栅极电极的边缘部分由于底切现象而变圆而产生隆起。 构成:第一导电膜在绝缘板(10)上蒸发。 在第一导电膜被干蚀刻之后,实施湿法蚀刻工艺一段时间以形成栅极(26)。 在栅极和电路板上形成栅极绝缘层(40)。 半导体材料在栅极绝缘层上蒸发。 源极部分(52),漏极部分(54)和沟道部分(56)形成在半导体材料上。 在源极和漏极部分上分别形成源极(72)和漏极(74)。