The invention provides an
OLED display device. A plurality of projections are arranged on one surface of a side, positioned close to an
OLED device, of a cover plate substrate; outer surfaces of the cover plate substrate and the plurality of projections are wrapped with heat conduction
layers, heat
radiation area and heat
radiation efficiency of a cover plate can be increased, service life of the
OLED device can be prevented from being reduced due to heat accumulation, and the cover plate is enabled to be high in
mechanical strength; a first
heat conducting and light shielding layer including
graphene and light shielding material is coated on an outer side of sealing gum, on an area, positioned outside the sealing gum, of the cover plate and on an area, positioned outside the sealing gum, of a base plate; a second first
heat conducting and light shielding layer is coated on an area, positioned outside a part corresponding to the OLED device, of a bottom part of the base plate; the OLED
display device can be prevented from all-around light leakage while
air tightness of the OLED device can be enhanced, external
moisture can be effectively prevented from permeating the OLED device, the service life of the OLED device can be prevented from being affected, heat
radiation efficiency of the OLED
display device can be further improved due to excellent
thermal conductivity and electrical
conductivity of the
graphene material, the OLED display device can be free from
static electricity, and product quality can be improved.