Abstract: A display device includes: a first substrate including a pixel area and a transmissive area; a thin-film transistor on the first substrate; a planarization layer on the thin-film transistor; a first light emitting electrode on the planarization layer; a bank covering a part of the first light emitting electrode; a light emitting layer on the first light emitting electrode; and a second light emitting electrode on the light emitting layer and the bank. The transmissive area includes a transmissive hole penetrating the bank and the planarization layer.

Abstract: A heater block for heating a wafer comprising a body member; a wafer support disposed on the body member, the wafer support containing a plurality of troughs which extend along the surface thereof; a plurality of heated elements disposed under the wafer support in the body wherein the heat generated from each of the heated elements is transferred to the wafer support; a gas line conmected to the wafer support for supplying gas to the plurality of troughs; means for supplying heat to the heated elements; and a controller connected to the heated elements for controlling the temperature of the heated elements.