Display apparatus capable of shadowing outer frame and using leaded light device

The invention provides a display apparatus capable of shading outer frame and a used light guide apparatus thereof, the light guide includes a light-permeable substrate having a first design layer and a second design layer on opposite surfaces of the substrate respectively, when a screen emits light to the first design layer, the first design layer is used for radiating advance direction of incident light, the incident light in parallel with center shaft of the substrate is guided to bias from the center shaft after being effected by the first design layer, incident light of the first design layer more distant from the center shaft has larger bias angle; then when the incident light becomes emergent light through the second design layer, the second design layer is used for astringing advance direction of emergent light, such that size of the image surrounded by the emergent light has proportional amplification relationship around symmetric center of center shaft with the size of the image surrounded by the incident light. According to the invention, image on output screen of the display apparatus can be amplified by times, and effect of removing or shading outer frame of the display apparatus can be achieved.