Patent ID: 9390961
Filing Date: 2016-07-12
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a first bit line structure extending in a first direction; a second bit line structure extending in the first direction, the second bit line structure spaced apart from the first bit line structure in a second direction that is different from the first direction; a storage contact plug between the first bit line structure and the second bit line structure; a first plug insulator between the first bit line structure and the second bit line structure, the first plug insulator directly contacting a first side surface of the storage contact plug that extends in the second direction and not directly contacting a second side surface of the storage contact plug that extends in the second direction, the second side surface being opposite the first side surface; and a plug isolation pattern between the first bit line structure and the first plug insulator, wherein the first plug insulator and the plug isolation pattern are adjacent each other along the second direction and the storage contact plug and the plug isolation pattern are adjacent each other along the first direction wherein the plug isolation pattern directly contacts the first side surface of the storage contact plug and wherein a profile of a side surface of the first plug insulator that directly contacts the storage contact plug is different from a profile of a side surface of the plug isolation pattern that directly contacts the storage contact plug.