Fixed structure of display optical diaphragm

The utility model provides a fixed structure of a display optical diaphragm, and relates to a positioning mode of the optical diaphragm. Problems that shadows and hot spots of a liquid crystal screen are caused by conventional positioning mode of the optical diaphragm are solved. The fixed structure of the display optical diaphragm is positioned between a backboard and a liquid crystal panel of a whole module, and comprises a plurality of optical diaphragms which are mutually superposed and born on the backboard, wherein a fixing mechanism which can position the optical diaphragms through clamping two sides is arranged on the circumferential edge of the optical diaphragms; and the fixing mechanism is provided with a sheet-shaped connection part which is fixedly connected with the side wall of the backboard. White rubber frames and black rubber frames are sectionally used in the fixing structure of the display optical diaphragm so as to form a combined rubber frame mode, so that the positioning advantages of the two rubber frames are combined, problems such as hot spots, shadows and the like are effectively avoided, the reliability of a backlight system is greatly enhanced; simultaneously, the fixed structure of the display optical diaphragm has the characteristics of simple structure, easy realization and the like.