Window shade and panel assembly thereof

A panel assembly for a window shade, comprising:

• a support sheet;
• and
• a plurality of elongate strips bonded to the support sheet, the support sheet and the elongate strips forming a plurality of cells that are distributed along a lengthwise axis of the support sheet, the elongate strips including at least a first and a second elongate strip adjacent to each other;
• wherein each of the first and second elongate strip has a first and a second edge opposite to each other, and a main strip portion located between a first and a second margin, the first margin adjoining the main strip portion along a first folding line and extending between the first folding line and the first edge, the second margin adjoining the main strip portion along a second folding line and extending between the second folding line and the second edge, the second margin including a third folding line substantially parallel to the second folding line, the first margin being bonded to the support sheet, the second margin being bonded to the support sheet at a first margin portion between the third folding line and the second edge and unbonded to the support sheet at a second margin portion between the second folding line and the third folding line, the second margin portion of the first elongate strip further being unbonded to the second elongate strip, and the second margin portion of the first elongate strip overlapping with the main strip portion of the second elongate strip along the lengthwise axis of the support sheet.