Backlight unit, liquid crystal display device, and electronic device including the same
A backlight unit, a liquid crystal display (LCD) device, and an electronic device including the same are provided. The backlight unit includes a light guide member having a light receiving edge provided on an outer wall, and a hole spaced apart from light receiving edge; a light source configured to provide light to the light receiving edge; and a reflective member on an inner wall of the hole of the light guide member.
1. A backlight unit, comprising:
a light guide member including a light receiving edge provided on an outer wall, and a first hole that is spaced apart from the light receiving edge and is a through hole;
a light source configured to provide light to the light receiving edge; and
a reflective member on an entire inner wall of the first hole of the light guide member.
2. The backlight unit of claim 1 , wherein the reflective member includes a specular reflection film.
3. The backlight unit of claim 2 , wherein the specular reflection film has a stacked structure in which a plurality of layers including a metal layer are stacked or a stacked structure in which a plurality of layers including a material layer having a refractive index anisotropic characteristic are stacked.
4. The backlight unit of claim 1 , wherein the reflective member includes a scattering film.
5. The backlight unit of claim 4 , wherein the scattering film has an upper film including an inorganic particle, a lower film including an inorganic particle, a plurality of beads provided between the upper film and the lower film, and an air pocket between the plurality of beads.
6. The backlight unit of claim 1 , further comprising a housing member including a second hole communicating with the first hole of the light guide member and accommodating the light guide member.
7. The backlight unit of claim 1 , wherein the light guide member includes a plurality of outer walls, at least one of the plurality of outer walls having at least one of a curved surface and an inclined surface.
8. A liquid crystal display (LCD) device, comprising:
a backlight unit including:
a light guide member having a light receiving edge provided on an outer wall, and a first hole that is spaced apart from the light receiving edge and is a through hole,
a light source configured to provide light to the light receiving edge, and
a reflective member on an entire inner wall of the first hole of the light guide member; and
a liquid crystal display panel including a second hole communicating with the first hole of the light guide member.
9. The LCD of claim 8 , wherein the reflective member includes a specular reflection film.
10. The LCD of claim 9 , wherein the specular reflection film has a stacked structure in which a plurality of layers including a metal layer are stacked or a stacked structure in which a plurality of layers including a material layer having a refractive index anisotropic characteristic are stacked.
11. The LCD of claim 8 , wherein the reflective member includes a scattering film.
12. The LCD of claim 11 , wherein the scattering film has an upper film including an inorganic particle, a lower film including an inorganic particle, a plurality of beads provided between the upper film and the lower film, and an air pocket between the plurality of beads.
13. The LCD of claim 8 , further comprising a housing member including a third hole communicating with the first hole of the light guide member and accommodating the light guide member.
14. The LCD of claim 8 , wherein the light guide member includes a plurality of outer walls, at least one of the plurality of outer walls having at least one of a curved surface and an inclined surface.
15. An electronic device, comprising:
a backlight unit including:
a light guide member having a light receiving edge provided on an outer wall, and a first hole that is spaced apart from the light receiving edge and is a through hole,
a light source configured to provide light to the light receiving edge, and
a reflective member on an entire inner wall of the hole of the light guide member;
a liquid crystal display panel including a second hole communicating with the first hole of the light guide member; and
an auxiliary mechanism in the first hole of the light guide member.
16. The electronic device of claim 15 , wherein the reflective member includes a specular reflection film.
17. The electronic device of claim 16 , wherein the specular reflection film has a stacked structure in which a plurality of layers including a metal layer are stacked or a stacked structure in which a plurality of layers including a material layer having a refractive index anisotropic characteristic are stacked.
18. The electronic device of claim 15 , wherein the reflective member includes a scattering film.
19. The electronic device of claim 18 , wherein the scattering film has an upper film including an inorganic particle, a lower film including an inorganic particle, a plurality of beads provided between the upper film and the lower film, and an air pocket between the plurality of beads.
20. The electronic device of claim 15 , further comprising a housing member including a hole communicating with the hole of the light guide member and accommodating the light guide member.
21. The electronic device of claim 15 , wherein the light guide member includes a plurality of outer walls, at least one of the plurality of outer walls having at least one of a curved surface and an inclined surface.
22. The electronic device of claim 15 , wherein the auxiliary mechanism includes one of a rotational shaft of a jog shuttle, a rotational shaft of a clock hand, a rotational shaft of a blast apparatus, and a rotational shaft of an instrument panel for vehicles.