Fixing apparatus for reducing noise of backlit unit

A fixing apparatus, applied to a diffuser plate of a backlight unit (BLU), the fixing apparatus comprising:

• a fixing hole, symmetrically formed at a centrosymmetric line of a diffuser plate, a first pair of edges setting at two sides of the centrosymmetric line, and a second pair of edges cutting across the centrosymmetric line;
• and
• a positioning pin, located within the fixing hole, and separated from the first pair of edges of the fixing hole at a first distance, and separated from the second pair of edges of the fixing hole at a second distance,
• wherein the first distance is smaller than the second distance.

A backlight unit (BLU) comprising:

• a housing comprising a frame configured to enclose a plurality of backlight components;
• and
• a fixing apparatus configured to constrain movement of a diffuser plate within the housing, the fixing apparatus comprising,
• a receiving portion symmetrically formed at a centrosymmetric line of the diffuser plate, a first pair of edges of the receiving portion setting at either sides of the centrosymmetric line, another edge of the receiving portion cutting across the centrosymmetric line;
• and
• a positioning portion located within the receiving portion and separated from the first pair of edges at a first distance, and separated from another edge of the receiving portion at a second distance, wherein the first distance is smaller than the second distance.

A displaying device comprising:

• a backlight unit (BLU), comprising,
• a housing configured to enclose a plurality of backlight components of the BLU, the housing having a frame, and
• a diffuser plate placed on the frame and having a fixing apparatus for constraining the movement of the diffuser plate, the fixing apparatus comprising,
• a receiving portion symmetrically formed at a centrosymmetric line of the diffuser plate, a first pair of edges of the receiving portion setting at either sides of the centrosymmetric line, another edge of the receiving portion cutting across the centrosymmetric line;
• and
• a positioning portion located within the receiving portion and separated from the first pair of edges at a first distance, the positioning portion separated from another edge of the receiving portion at a second distance, wherein the first distance is smaller than the second distance.