Abstract: A wavelength conversion light guide assembly including a light guide plate, a holding element, and a wavelength conversion material is provided. The holding element is jointed with at least one side of the light guide plate, wherein the holding element and the light guide plate enclose a closed accommodating space. The wavelength conversion material is disposed in the accommodating space and includes a plurality of quantum dots. A light source module using the wavelength conversion light guide assembly is also provided.

Abstract: A light source module including a light guide plate, a light source, and a quantum dot layer is provided. The light guide plate has a light emitting surface, a bottom surface, and a light incidence surface, wherein the bottom surface is opposite to the light emitting surface, and the light incidence surface connects the bottom surface and the light emitting surface. The light source is disposed beside the light incidence surface. The quantum dot layer is disposed on at least one of the light emitting surface and the bottom surface.

Abstract: An optical transmittance adjustment device including a light guide plate and an optical transmittance adjustment film is provided. The light guide plate has a first surface and a second surface, wherein the second surface is opposite to the first surface and has a plurality of light scattering microstructures. The optical transmittance adjustment film is located at a side of the light guide plate, and the light scattering microstructures are located between the optical transmittance adjustment film and the light guide plate.

Abstract: A light guide plate including a light guide main body and an index matching layer is provided. The light guide main body has a light-emitting surface and a bottom surface opposite to the light-emitting surface. The index matching layer is disposed adjacent to the bottom surface, wherein a refractive index of the light guide main body is n1, and a refractive index of the index matching layer is n2. 1.07*n2?n1?1.7*n2, and 0.1?(n1?n2)?0.7. A thickness of the index matching layer is larger than 500 nm. A backlight module and a display apparatus are also provided.

Abstract: A wavelength conversion light guide assembly including a light guide plate, a holding element, and a wavelength conversion material is provided. The holding element is jointed with at least one side of the light guide plate, wherein the holding element and the light guide plate enclose a closed accommodating space. The wavelength conversion material is disposed in the accommodating space and includes a plurality of quantum dots. A light source module using the wavelength conversion light guide assembly is also provided.

Abstract: An optical transmittance adjustment device including a light guide plate and an optical transmittance adjustment film is provided. The light guide plate has a first surface and a second surface, wherein the second surface is opposite to the first surface and has a plurality of light scattering microstructures. The optical transmittance adjustment film is located at a side of the light guide plate, and the light scattering microstructures are located between the optical transmittance adjustment film and the light guide plate.

Abstract: A light source module including a light guide plate, a light source, and a quantum dot layer is provided. The light guide plate has a light emitting surface, a bottom surface, and a light incidence surface, wherein the bottom surface is opposite to the light emitting surface, and the light incidence surface connects the bottom surface and the light emitting surface. The light source is disposed beside the light incidence surface. The quantum dot layer is disposed on at least one of the light emitting surface and the bottom surface.

Abstract: A light guide plate including a light guide main body and an index matching layer is provided. The light guide main body has a light-emitting surface and a bottom surface opposite to the light-emitting surface. The index matching layer is disposed adjacent to the bottom surface, wherein a refractive index of the light guide main body is n1, and a refractive index of the index matching layer is n2. 1.07*n2?n1?1.7*n2, and 0.1?(n1?n2)?0.7. A thickness of the index matching layer is larger than 500 nm. A backlight module and a display apparatus are also provided.