Pressure sensor for display devices

A display including a pressure sensor, comprising:

• a window substrate having an active area wherein display elements are displayed and an inactive area wherein display elements are not displayed;
• an encapsulation substrate positioned in parallel with the window substrate;
• a display substrate coupled to the encapsulation substrate, the display substrate having electronics therein for generating the display elements to be displayed through the window substrate;
• a frit material between the encapsulation substrate and the display substrate, the frit material overlapping with the inactive area;
• a reference ground layer, which is a first part of a pressure sensor, positioned between the window substrate and the encapsulation substrate;
• and
• a sensing pad, which is a second part of the pressure sensor, spaced apart from the reference ground layer.

A method of assembling a display including a pressure sensor, comprising:

• providing a reference ground and sensing pad between a window layer and an encapsulation layer, the sensing pad having a plurality of conductive pads coupled together in series through signal traces with gaps between the conductive pads;
• providing a frit layer between the encapsulation layer and a low-temperature polycrystalline silicon (LTPS) layer;
• projecting a laser through the gaps in the sensing pad to melt the frit layer;
• and
• providing a compressible region between the window layer and the encapsulation layer.