Abstract: The present disclosure is applicable to a display apparatus-related technical field, and relates to, for example, a rotating type display apparatus using light emitting diodes (LEDs) which are semiconductor light emitting devices. According to the present disclosure, the rotating type display apparatus using the light-emitting devices comprises: a fixed portion including a motor; a rotating unit located on the fixed portion and rotated by the motor; and a light source device coupled to the rotating unit and implementing a display by using an afterimage while rotating with the rotating unit, wherein the light source device may comprise: at least one panel radially arranged or at least one panel arranged along a cylindrical surface; a light emitting device array in which individual pixels are arranged in the lengthwise direction on each panel; and a barrier wall located on the panel on at least one side of the individual pixels.

Abstract: An electrodeless lighting device and methods for manufacturing the same are provided. The method includes inserting a dose into the bulb and at least one of heating a vacuum line for applying a vacuum to the bulb at first predetermined temperature and heating the bulb containing the dose at a second predetermined temperature for a predetermined time.

Abstract: A display device including a wiring substrate having a first substrate layer and a second substrate layer, a conductive adhesive layer configured to cover the wiring substrate, a plurality of semiconductor light emitting devices coupled to the conductive adhesive layer and electrically connected to a first electrode and a second electrode. Further, the first electrode is disposed on the first substrate layer, and the second substrate layer has one surface facing the conductive adhesive layer and the other surface covering the first electrode, and an auxiliary electrode electrically connected to the first electrode and the second electrode are disposed on one surface of the second substrate layer.

Abstract: A display device including a wiring substrate having a first substrate layer and a second substrate layer, a conductive adhesive layer configured to cover the wiring substrate, a plurality of semiconductor light emitting devices coupled to the conductive adhesive layer and electrically connected to a first electrode and a second electrode. Further, the first electrode is disposed on the first substrate layer, and the second substrate layer has one surface facing the conductive adhesive layer and the other surface covering the first electrode, and an auxiliary electrode electrically connected to the first electrode and the second electrode are disposed on one surface of the second substrate layer.

Abstract: An electrodeless lighting device and methods for manufacturing the same are provided. The method includes inserting a dose into the bulb and at least one of heating a vacuum line for applying a vacuum to the bulb at first predetermined temperature and heating the bulb containing the dose at a second predetermined temperature for a predetermined time.