Liquid crystal display and manufacturing method thereof

A liquid crystal display, comprising:

• a substrate;
• a gate line disposed on the substrate and including a bottom gate electrode;
• a first insulating layer covering the gate line;
• an active member including a channel which is defined on the first insulating layer and overlaps the bottom gate electrode and a source electrode and a drain electrode which are positioned at both end sides of the channel;
• a pixel electrode disposed on the same layer as the active member;
• a second insulating layer covering the active member and the pixel electrode;
• a data line disposed on the second insulating layer and connected to the active member;
• a passivation layer covering the data line;
• and
• a common electrode disposed on the passivation layer and overlapping the pixel electrode,
• wherein the active member and the pixel electrode include an oxide semiconductor the pixel electrode is not overlapped with the source electrode, and both an entire bottom surface of the pixel electrode and an entire bottom surface of the source electrode are contacted with the first insulating layer.