Display panel

A display panel, comprising:

• a first substrate having a view area and a ring-shaped though trench and comprising:
• a first base;
• a first metal layer disposed on the first base;
• a gate-insulating layer being disposed on the first base and covering at least a part of the first metal layer;
• a second metal layer being disposed on the gate-insulating layer and exposing a part of the gate-insulating layer;
• a semiconductor layer disposed on the first base, wherein a plurality of switching elements are composed of the first metal layer, the second metal layer, the gate-insulating layer and the semiconductor layer and the switching elements are disposed in the view area;
• a bibulous insulating layer disposed on the second metal layer and the gate-insulating layer, wherein the ring-shaped through trench passes through the bibulous insulating layer and the part of the gate-insulating layer exposed by the second metal layer and surrounds the view area;
• and
• a pixel-electrode layer being disposed on the bibulous insulating layer and comprising a plurality of pixel electrodes, wherein each of the pixel electrodes is disposed in the view area and electrically connected to one of the switching elements;
• a display layer being disposed on the pixel-electrode layer and corresponding to the view area;
• a second substrate being disposed on the display layer and comprising a second base and a common-electrode layer, wherein the common-electrode layer is disposed between the second base and the display layer;
• and
• a water-proofing frame being disposed at the ring-shaped through trench, connecting the first substrate and the second substrate and enclosing a wet-proof space between the first substrate and the second substrate, wherein the view area, the display layer, part of the bibulous insulating layer and part of the gate-insulating layer are disposed in the wet-proof space.