The utility model discloses an ultra-narrow edge full segment code combination instrument, which comprises a bottom shell, an installation cavity is formed in the bottom shell in a concave mode, a display
assembly is installed in the installation cavity, the display
assembly comprises a
glass cover plate, a segment code screen, a
light guide support and a PCB which are arranged in sequence, the
glass cover plate is fixed with the segment code screen in a bonding mode, and the
light guide support is fixed with the PCB. A containing groove for containing the segment code screen is formed in the front side wall of the
light guide support, the edge portion of the
glass cover plate is fixedly bonded with the light guide support, two oppositely-arranged buckle structures are arranged on the rear side wall of the light guide support, the edge portion of the PCB is matched with the two buckle structures in a buckled mode, and a flexible circuit board is connected between the PCB and the segment code screen. A plurality of supporting structures are arranged along the edge of the mounting cavity, each supporting structure abuts against the PCB, and the inner wall of the mounting cavity is matched with the edge part of the light guide support and is fixed to the edge part of the light guide support in an
adhesive mode. According to the ultra-narrow-edge full-segment combination instrument, bolts are not needed, the production cost is reduced, the installation and maintenance are more convenient, and the PCB is prevented from being damaged due to misoperation.