Patent ID: 11864421
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A thin film transistor (TFT) substrate, comprising:
a substrate;
an active layer disposed on the substrate;
a buffer layer disposed between the substrate and the active layer, the buffer layer including a first buffer layer disposed between the active layer and the substrate to direct contact with the active layer, and a second buffer layer disposed between the substrate and the first buffer layer;
a source electrode; and
a drain electrode,
wherein each of the first buffer layer and the second buffer layer includes an inorganic insulating layer and an area ratio of a peak corresponding to an N—H bond in the buffer layer is 0.5% or less based on a total peak area in a Fourier transform infrared spectroscopy (FTIR), and
wherein contents of a compound having the N—H bond in the first buffer layer decreases when a distance from an interface between the first buffer layer and the active layer increases.