Abstract: An optical device and the prism module thereof are provided. The prism module includes a first prism, a second prism, and a third prism. The second prism is disposed beside the first prism. The third prism is adhered to the second prism. First light enters the first prism, is reflected plural times in the first prism, enters the second prism, and is emitted from the second prism. Second light enters the second prism, is reflected plural times in the second prism, and is emitted from the second prism. Third light sequentially passes through the third prism and the second prism, enters the first prism, is reflected plural times in the first prism, and is emitted from the first prism.

Abstract: A back-light module includes a back board. The back board includes a substrate and a plurality of frame monomers. Each frame monomer comprises four lateral ribs, every two adjacent lateral ribs are perpendicularly connected with each other. The frame monomers are detachably assembled to each other to form a height adjustable back frame, and the height adjustable back frame is assembled with the substrate to form a height adjustable light-mixing chamber.

Abstract: A back-light module includes a back board. The back board includes a substrate and a plurality of frame monomers. Each frame monomer comprises four lateral ribs, every two adjacent lateral ribs are perpendicularly connected with each other. The frame monomers are detachably assembled to each other to form a height adjustable back frame, and the height adjustable back frame is assembled with the substrate to form a height adjustable light-mixing chamber.

Abstract: A liquid crystal display device thermally insulated from light source heat, includes a display panel, a backlight module positioned on the display panel, a bezel positioned around the backlight module, and a thermal insulating element mounted on the bezel. The backlight module includes a light guiding plate and at least one light source located at a side of the light guiding plate. The thermal insulating element is positioned between the at least one light source and the bezel. A sealed space is formed between the thermal insulating element and the bezel. The thermal insulating element and the sealed vacuum space are configured to thermally insulate heat generated by the at least one light source and prevent heat from transferring to the bezel and display panel.

Abstract: A backlight module includes a light guiding plate having a side surface, at least one light source facing towards the light guiding plate, and a thermal insulation element. The thermal insulation element is configured to prevent heat from the at least one light source from transferring to the bezel and display panel. The thermal insulation element is coupled to the side surface. The at least one light source is enclosed by the light guiding plate and the thermal insulation element.

Abstract: A backlight module includes a light guiding plate having a side surface, at least one light source facing towards the light guiding plate, and a thermal insulation element. The thermal insulation element is configured to prevent heat from the at least one light source from transferring to the bezel and display panel. The thermal insulation element is coupled to the side surface. The at least one light source is enclosed by the light guiding plate and the thermal insulation element.

Abstract: A liquid crystal display device thermally insulated from light source heat, includes a display panel, a backlight module positioned on the display panel, a bezel positioned around the backlight module, and a thermal insulating element mounted on the bezel. The backlight module includes a light guiding plate and at least one light source located at a side of the light guiding plate. The thermal insulating element is positioned between the at least one light source and the bezel. A sealed space is formed between the thermal insulating element and the bezel. The thermal insulating element and the sealed vacuum space are configured to thermally insulate heat generated by the at least one light source and prevent heat from transferring to the bezel and display panel.