Backlight assembly and display apparatus having the same
View Patent ↗A backlight assembly includes a light providing unit, an optical sheet, and a mold frame. The light providing unit generates light. The optical sheet has a main body disposed on the light providing unit and a sheet-guiding portion protruding outward from the main body. The mold frame has a frame shape to receive the light providing unit and the optical sheet and includes a sheet-guiding recess and a securing protrusion adjacent to at least one side of the sheet-guiding recess and protruding with respect to an upper surface of the optical sheet to prevent misalignment of the optical sheet. The sheet-guiding recess receives the sheet-guiding portion.
1. A backlight assembly comprising:
a light providing unit generating light;
an optical sheet having a main body disposed on the light providing unit and a sheet-guiding portion outwardly protruding from the main body;
a mold frame having a frame shape to receive the light providing unit and the optical sheet, the mold frame having a sheet-guiding recess and a securing protrusion adjacent to at least one end of the sheet-guiding recess to prevent misalignment of the optical sheet, the sheet-guiding recess receiving the sheet-guiding portion; and
a sheet tape overlapping at least a portion of the optical sheet and at least a portion of the mold frame to secure the optical sheet to the mold frame;
wherein the sheet tape has a tape-guiding recess to expose the securing protrusion.
2. The backlight assembly of claim 1 , wherein the securing protrusion is formed adjacent to opposing ends of the sheet-guiding recess.
3. The backlight assembly of claim 1 , wherein the mold frame comprises:
a guiding mold receiving the light providing unit and the optical sheet, and having the sheet-guiding recess and the securing protrusion; and
a side mold extending upward from an edge of the guiding mold.
4. The backlight assembly of claim 1 , wherein the sheet tape has a substantially rectangular frame shape when viewed from a plan view.
5. The backlight assembly of claim 1 , wherein the securing protrusion is extended upward from an upper surface of the guiding mold.
6. The backlight assembly of claim 5 , wherein an upper surface of the securing protrusion is disposed higher than an upper surface of the optical sheet.
7. The backlight assembly of claim 6 , wherein a height of the securing protrusion less than or equal to a thickness of the sheet tape.
8. The backlight assembly of claim 7 , wherein a height of the upper surface of the optical sheet is substantially the same as a height of the upper surface of the guiding mold.
9. The backlight assembly of claim 7 , wherein the height of the securing protrusion is about 80 μm to about 100 μm.
10. The backlight assembly of claim 1 , wherein the main body has a substantially rectangular shape when viewed from a plan view, and the sheet-guiding portion is formed on at least one of four sides of the main body.
11. The backlight assembly of claim 10 , wherein the optical sheet further comprises an additional sheet-guiding portion, and the sheet-guiding portions are respectively formed at two longer sides of the main body.
12. The backlight assembly of claim 10 , wherein the sheet-guiding portion is formed on at least one of four corners of the main body.
13. The backlight assembly of claim 1 , wherein the light providing unit comprises:
a light generating unit generating the light; and
a light-guiding plate, of which a side surface faces the light generating unit, to guide the light to the optical sheet.
14. The backlight assembly of claim 13 , wherein the light generating unit comprises a light-emitting diode generating the light having a point-shape.
15. The backlight assembly of claim 1 , further comprising a bottom chassis disposed under the mold frame and combined with the mold frame.
16. A display apparatus comprising:
a backlight assembly generating light, the backlight assembly having:
a light providing unit generating light;
an optical sheet having a main body disposed on the light providing unit and a sheet-guiding portion protruding outward from the main body;
a mold frame having a frame shape to receive the light providing unit and the optical sheet and having a sheet-guiding recess and a securing protrusion adjacent to at least one end of the sheet-guiding recess to prevent misalignment of the optical sheet, the sheet-guiding recess receiving the sheet-guiding portion; and
a sheet tape overlapping at least a portion of the optical sheet and at least a portion of the mold frame to secure the optical sheet to the mold frame, wherein the sheet tape has a tape-guiding recess to expose the securing protrusion;
a display panel disposed on the backlight assembly to display an image.
17. The display apparatus of claim 16 , wherein the mold frame comprises:
a guiding mold receiving the light providing unit and the optical sheet and having the sheet-guiding recess and the securing protrusion; and
a side mold extending upward from an edge of the guiding mold.