A plasma display device having a laminar attachment structure capable of increasing attachment of a heat-dissipating plate to a plasma display panel. Through a laminar attachment structure with a plurality of small pieces of thermal pad or adhesive double tape and a closed loop of thermal pad or adhesive double tape accommodating the plurality of small pieces as well as by means of vacuum pumping, the air within the closed loop is drawn out when the heat-dissipating plate is combined to the plasma display panel so as to reduce bubbles formed between the heat-dissipating plate and the plasma display panel and to increase tight attachment therebetween.