Touch display device

A touch display device, comprising:

• a reflective display module having a display surface;
• a touch sensing layer disposed on the display surface;
• a light guide member disposed between the reflective display module and the touch sensing layer and comprising a light guide plate having a plurality of optical microstructures on a first surface of the light guide plate;
• a ground shielding layer in direct contact with the optical microstructures on the first surface of the light guide plate and located between the light guide member and the touch sensing layer, and the ground shielding layer electrically connecting to one of the reflective display module and the touch sensing layer to electrically connect to a ground potential through the one of the reflective display module and the touch sensing layer;
• a first adhesive layer disposed between the light guide member and the reflective;
• display module, and located between the ground shielding layer and the reflective display module;
• and
• a second adhesive layer disposed between the touch sensing layer and the light guide member,
• wherein the second adhesive layer covers the ground shielding layer and the optical microstructures, and the second adhesive layer is located between the touch sensing layer and the ground shielding layer,
• wherein a material of the ground shielding layer comprises indium oxide, tin oxide, indium tin oxide, or indium zinc oxide, and a refractive index of the ground shielding layer is greater than a refractive index of the light guide member.