Touch display panel

A touch display panel, comprising:

• a display panel having a display region and a peripheral region, wherein the peripheral region substantially surrounds the display region;
• and
• a touch electrode layer having a plurality of non-edge unit regions and a plurality of edge unit regions, wherein, on a vertical projection plane, a vertical projection of each of the non-edge unit regions is completely located within a vertical projection of the display region, a vertical projection of each of the edge unit regions overlaps the vertical projection of the display region and a vertical projection of the peripheral region, and a size of each of the edge unit regions is greater than a size of each of the non-edge unit regions, wherein the touch electrode layer comprises:
• a plurality of first electrode series extending along a first direction;
• and
• a plurality of second electrode series extending along a second direction, the first direction intersecting the second direction, wherein,
• an area of each of the first electrode series correspondingly disposed within each of the non-edge unit regions is A1, an area of each of the first electrode series correspondingly disposed within each of the edge unit regions is A1′, and (|A1−A1′|)/A1≤10%,
• an area of each of the second electrode series correspondingly disposed within each of the non-edge unit regions is A2, an area of each of the second electrode series correspondingly disposed within each of the edge unit regions is A2′, and (|A2−A2′|)/A2≤10%, and
• a capacitance value between the first electrode series and the second electrode series correspondingly disposed within each of the non-edge unit regions is C1, a capacitance value between the first electrode series and the second electrode series correspondingly disposed within each of the edge unit regions is C1′, and (|C1−C1′|)/C1≤10% wherein,
• the edge unit regions comprise a plurality of first edge unit regions, a plurality of second edge unit regions and a plurality of third edge unit regions, wherein,
• a width of each of the first edge unit regions in the first direction is the same as a width of each of the non-edge unit regions in the first direction;
• a width of each of the second edge unit regions in the second direction is the same as a width of each of the non-edge unit regions in the second direction;
• a width of each of the third edge unit regions in the first direction is not the same as the width of each of the non-edge unit regions in the first direction;
• and
• a width of each of the third edge unit regions in the second direction is not the same as the width of each of the non-edge unit regions in the second direction.