Backlight assembly and display device having the same
A backlight assembly for a display includes a microwave generating member, a light-generating member and a light-guiding member. The microwave generating member generates a microwave and light-generating member generates light by using the microwave. Light-guiding member is connected to light-generating member to guide light generated from light-generating member. The backlight assembly generates light by using a microwave instead of an electrode and a fluorescent material so that the display device may have enhanced luminance uniformity and stability.
1 . A backlight assembly for a display comprising:
a microwave generating member generating a microwave;
a light-generating member generating light using the microwave; and
a light-guiding member connected to the light-generating member, the light-guiding member guiding the light generated from the light-generating member.
2 . The backlight assembly of claim 1 , wherein the microwave generating member comprises a magnetron.
3 . The backlight assembly of claim 1 , further comprising a microwave transmitting member connecting the microwave generating member to the light-generating member, the microwave transmitting member transmitting the microwave to the light-generating member.
4 . The backlight assembly of claim 3 , wherein the microwave transmitting member comprises a waveguide.
5 . The backlight assembly of claim 1 , wherein the light-generating member comprises:
a lamp including a luminescent gas excited by the microwave to emit light; and
a microwave resonance member surrounding the lamp to resonate the microwave.
6 . The backlight assembly of claim 5 , wherein the microwave resonance member has a mesh structure.
7 . The backlight assembly of claim 5 , wherein the microwave resonance member comprises a metal.
8 . The backlight assembly of claim 5 , wherein the light-generating member further comprises a light-reflecting member partially surrounding the microwave resonance member and reflecting the light emitted from the lamp toward the light-guiding member.
9 . The backlight assembly of claim 1 , wherein the light-guiding member has a bar shape.
10 . The backlight assembly of claim 9 , wherein the light-guiding member has a circular cross section.
11 . The backlight assembly of claim 9 , wherein the light-guiding member has a rectangular cross section.
12 . The backlight assembly of claim 9 , wherein beads diffusing light are distributed in the light-guiding member.
13 . The backlight assembly of claim 9 , wherein air bubbles diffusing light are distributed in the light-guiding member.
14 . The backlight assembly if claim 9 , wherein the light-guiding member comprises a light-transmitting hole formed in a lengthwise direction of the light-guiding member.
15 . The backlight assembly of claim 9 , wherein a pair of the light-generating members is arranged at the ends of the light-guiding member.
16 . The backlight assembly of claim 9 , wherein a plurality of the light-guiding members are arranged in parallel with each other.
17 . The backlight assembly of claim 16 , wherein a plurality of the light-generating members arranged at one end of the light-guiding members generate light by using the microwave generated from one microwave generating member.
18 . The backlight assembly of claim 17 , further comprising a microwave transmitting member positioned between the microwave generating member and a plurality of the light-generating members, the microwave transmitting member having a plurality of branches that transmit the microwave to each of the light-generating members.
19 . The backlight assembly of claim 1 , wherein the light-guiding member has a plate shape.
20 . The backlight assembly of claim 19 , wherein the light-guiding member has a plurality of light-incident holes formed in parallel with each other.
21 . The backlight assembly of claim 20 , wherein a pair of the light-generating members is arranged at the ends of the each light-incident hole.
22 . The backlight assembly of claim 1 , wherein the microwave has a frequency of about 2 GHz to about 10 GHz.
23 . A display device comprising:
a backlight assembly including a receiving container having a bottom portion and a side portion, and a light-generating unit received in the receiving container to generate light by using a microwave; and
a display panel positioned over the backlight assembly, the display panel displaying an image by using the light generated from the light-generating unit.
24 . The display device of claim 23 , wherein light-generating unit comprises:
a microwave generating member generating a microwave;
a light-generating member generating light by using the microwave; and
a light-guiding member connected to the light-generating member for guiding the light generated bad the light-generating member.