Abstract: Disclosed is an optical device including a display module according to the present disclosure. The display module according to the present disclosure may display an image in a short-distance by laminating a cholesteric liquid crystal film layer on one surface of a display panel emitting light toward an eye of a user, and sequentially disposing a reflective polarizer, a lens, a half-mirror, and a display panel on an optical axis defined by the eye of the user in a direction away from a portion adjacent to the eye. An electronic device according to the present invention may be associated with an artificial intelligence module, robot, augmented reality (AR) device, virtual reality (VR) device, and device related to 5G services.

Abstract: Provided is an electronic device. The electronic device includes a cover allowing an external signal to pass therethrough, a circuit board provided on one side of the cover and having a first opening allowing the external signal to pass therethrough, and a sensing unit provided on one side of the circuit board and having a sensor part provided at a position corresponding to the first opening to receive the external signal. An electronic device according to the present invention may be associated with an artificial intelligence module, robot, augmented reality (AR) device, virtual reality (VR) device, and device related to 5G services.

Abstract: Disclosed is an electronic device. In the electronic device according to the present invention, a display panel disposed to emit light in a gravity direction, a concave mirror positioned below the display panel, and a polarizer positioned between the display panel and the concave mirror are used and the polarizer includes a cholesteric liquid crystal, thereby securing a visible distance and miniaturizing a size and a volume of the entire electronic device when a user wears the electronic device. The electronic device according to the present invention may be associated with an artificial intelligence module, a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device related to a 5G service, and the like.

Abstract: Disclosed is an electronic device. In the electronic device according to the present invention, a display panel disposed to emit light in a gravity direction, a concave mirror positioned below the display panel, and a polarizer positioned between the display panel and the concave mirror are used and the polarizer includes a cholesteric liquid crystal, thereby securing a visible distance and miniaturizing a size and a volume of the entire electronic device when a user wears the electronic device. The electronic device according to the present invention may be associated with an artificial intelligence module, a robot, an augmented reality (AR) device, a virtual reality (VR) device, a device related to a 5G service, and the like.