Liquid Crystal Display Device and Backlight Module

A backlight module, comprising;

• a waveguide, an optical film, an elastic member, and an alignment pin;
• wherein the elastic members support corners of the waveguide, and the optical film is disposed onto a surface of the waveguide facing away the elastic members;
• wherein the alignment pin is arranged on a side of the elastic member facing the optical film which includes at least a positioning hole is defined, wherein the positioning hole envelopes onto the alignment pin and at least a portion of the alignment pin extending beyond the positioning hole;
• wherein the aligning pin has an enlarged head portion having a diameter larger than a diameter of the positioning hole.

A liquid crystal display device, comprising:

• a backlight module, including
• a waveguide, an optical film, an elastic member, and an alignment pin;
• wherein the elastic members support corners of the waveguide, and the optical film is disposed onto a surface of the waveguide facing away the elastic members;
• wherein the alignment pin is arranged on a side of the elastic member facing the optical .film which includes at least a positioning hole is defined, wherein the positioning hole envelopes onto the alignment pin and at least a portion of the alignment pin extending beyond me positioning hole;
• wherein the aligning pin has an enlarged head portion having a diameter larger than a diameter of the positioning hole;
• and
• a liquid crystal display panel disposed on a surface of the optical film facing away from the waveguide.