Semiconductor devices including enlarged contact hole and methods of forming the same

• Main Authors: Park, Im Soo, Chung, Sung Yoon, Shin, Jae Uk, Son, Yoon Ho, Ko, Yong Sun
• Format: Patent
• Language: English
• Published: 17.09.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

Semiconductor devices and methods of forming the same are provided. The methods may include forming first and second line patterns. The first line pattern has a first side facing the second line pattern, and the second line pattern has a second side facing the first line pattern. The methods may also include forming a first spacer structure on the first side of the first line pattern and a second spacer structure on the second side of the second line pattern. The first and the second spacer structures may define an opening. The methods may further include forming a first conductor in a lower part of the opening, forming an expanded opening by etching upper portions of the first and second spacer structures, and forming a second conductor in the expanded opening. The expanded opening may have a width greater than a width of the lower part of the opening.