A display device, comprising: a display panel; a cover plate for protecting the display panel; and a heat dissipating device (20, 30, 50, or 60) for the display panel, comprising: a first heat conductor layer located on a side of the display panel away from a display surface of the display panel, and provided with a through hole; and a second heat conductor layer located on a side of the first heat conductor layer away from the display panel, a portion of the second heat conductor layer being connected to the display panel through the through hole; wherein a thermal conductivity of the first heat conductor layer in a direction parallel to the display surface is greater than a thermal conductivity of the first heat conductor layer in a direction perpendicular to the display surface; a thermal conductivity of the second heat conductor layer in the direction perpendicular to the display surface is greater than the thermal conductivity of the first heat conductor layer in the direction perpendicular to the display surface; and an orthographic projection of the first heat conductor layer on the display panel is located within an orthographic projection of the second heat conductor layer on the display panel, and an edge of the second heat conductor layer is connected to a cover plate for protecting the display panel. a display panel; a cover plate for protecting the display panel; and a heat dissipating device (20, 30, 50, or 60) for the display panel, comprising: a first heat conductor layer located on a side of the display panel away from a display surface of the display panel, and provided with a through hole; and a second heat conductor layer located on a side of the first heat conductor layer away from the display panel, a portion of the second heat conductor layer being connected to the display panel through the through hole; wherein a thermal conductivity of the first heat conductor layer in a direction parallel to the display surface is greater than a thermal conductivity of the first heat conductor layer in a direction perpendicular to the display surface; a thermal conductivity of the second heat conductor layer in the direction perpendicular to the display surface is greater than the thermal conductivity of the first heat conductor layer in the direction perpendicular to the display surface; and an orthographic projection of the first heat conductor layer on the display panel is located within an orthographic projection of the second heat conductor layer on the display panel, and an edge of the second heat conductor layer is connected to a cover plate for protecting the display panel. a first heat conductor layer located on a side of the display panel away from a display surface of the display panel, and provided with a through hole; and a second heat conductor layer located on a side of the first heat conductor layer away from the display panel, a portion of the second heat conductor layer being connected to the display panel through the through hole; wherein a thermal conductivity of the first heat conductor layer in a direction parallel to the display surface is greater than a thermal conductivity of the first heat conductor layer in a direction perpendicular to the display surface; a thermal conductivity of the second heat conductor layer in the direction perpendicular to the display surface is greater than the thermal conductivity of the first heat conductor layer in the direction perpendicular to the display surface; and an orthographic projection of the first heat conductor layer on the display panel is located within an orthographic projection of the second heat conductor layer on the display panel, and an edge of the second heat conductor layer is connected to a cover plate for protecting the display panel.