In general, glass front panels are near optimal because they conduct electric fields almost twice as easily as plastic panels.

This means is Glass (\$\epsilon _R =4.7\$) has twice the relative permittivity of plastic ( \$\epsilon _R =2.3\$ ) in the materials preferred here. This applies to both mutual and direct capacitance.

What is free space permittivity ?

• about 9 picofarads per meter ( ~ 9 pF /m means means 9 pF would be the capacitance of two hands with a gap of \$1/9^{th}\$ of the hand width.
  Why it is relative? all insulators are dielectric but glass is still twice as much as plastic and more than 4 times air or a vacuum.

ultra-thin glass panels as retransmission effects can occur

This means a partial discharge (PD) can occur, which may damage cells from the E field breakdown as breakdown threshold for example >10kV/mm or 10V/um is approached with ultrathin glass < 1mm

In general, glass front panels are near optimal because they conduct electric fields almost twice as easily as plastic panels.

This means is Glass (\$\epsilon _R =4.7\$) has twice the relative permittivity of plastic ( \$\epsilon _R =2.3\$ ) in the materials preferred here. This applies to both mutual and direct capacitance.

What is free space permittivity ?

• about 9 picofarads per meter ( ~ 9 pF /m means means 9 pF would be the capacitance of two hands with a gap of \$1/9^{th}\$ of the hand width.
  Why it is relative? all insulators are dielectric but glass is still twice as much as plastic and more than 4 times air or a vacuum.

ultra-thin glass panels as retransmission effects can occur

This means a partial discharge (PD) can occur and the charge buildup can create false sensing, which also may damage cells from the E field breakdown as breakdown threshold for example >10kV/mm or 10V/um is approached with ultrathin glass < 1mm

In general, glass front panels are near optimal because they conduct electric fields almost twice as easily as plastic panels.

This means is Glass (\$\epsilon _R =4.7\$) has twice the relative permittivity of plastic ( \$\epsilon _R =2.3\$ ) in the materials preferred here. This applies to both mutual and direct capacitance.

What is free space permittivity ?

• about 9 picofarads per meter ( ~ 9 pF /m means means 9 pF would be the capacitance of two hands with a gap of \$1/9^{th}\$ of the hand width.
  Why it is relative? all insulators are dielectric but glass is still twice as much as plastic and more than 4 times air or a vacuum.

ultra-thin glass panels as retransmission effects can occur

this means a partial discharge can damage cells from the E field breakdown as breakdown threshold in kV/mm or V/um is approached with ultrathin glass.

In general, glass front panels are near optimal because they conduct electric fields almost twice as easily as plastic panels.

This means is Glass (\$\epsilon _R =4.7\$) has twice the relative permittivity of plastic ( \$\epsilon _R =2.3\$ ) in the materials preferred here. This applies to both mutual and direct capacitance.

What is free space permittivity ?

• about 9 picofarads per meter ( ~ 9 pF /m means means 9 pF would be the capacitance of two hands with a gap of \$1/9^{th}\$ of the hand width.
  Why it is relative? all insulators are dielectric but glass is still twice as much as plastic and more than 4 times air or a vacuum.

ultra-thin glass panels as retransmission effects can occur

This means a partial discharge (PD) can occur, which may damage cells from the E field breakdown as breakdown threshold for example >10kV/mm or 10V/um is approached with ultrathin glass < 1mm