Abstract: A display device is provided. The display device includes: a display panel; a material complexed plate disposed at a rear of the display panel; and a side frame which is disposed between the display panel and the material complexed plate and is fixed to the material complexed plate, and to which the display panel is coupled, wherein the material complexed plate includes: a front skin forming a front surface; a rear skin forming a rear surface and facing the front skin; and a core disposed between the front skin and the rear skin and including fibers; and an inner frame formed by recessing the front skin or the rear skin, wherein the inner frame includes: horizontal inner lines elongated in one direction; and vertical inner lines elongated in a direction intersecting the one direction.

Abstract: Provided is a hybrid rocket using catalytic decomposition of oxidizer, which generates thrust by injecting high temperature oxygen and steam formed by catalytic decomposing liquid oxidizer into solid fuel and thereby auto igniting and combusting the solid fuel without a separate igniter.

Abstract: Disclosed is a bipolar plate for a fuel cell, including: a non-conductive anode membrane on which a fuel flow channel is formed; a non-conductive cathode membrane on which an air flow channel is formed; a non-conductive separation membrane that is provided between the anode membrane and the cathode membrane to separate them from each other so that the fuel and the air are not mixed; and a metal unit that provides a current moving path allowing charge to be moved from the anode membrane to the cathode membrane via the separation membrane when the anode membrane, the separation membrane and the cathode membrane are stacked sequentially. More specifically, each of the anode membrane, the cathode membrane and the separation membrane is glass, preferably, photosensitive glass.