US 2006/0232996 A1 · Light guide plate with stepped edge and display device having the same

Abstract

A light guide plate includes a first surface having a light incident surface and a light reflect surface, a second surface facing the first surface, through which the reflected light exits, a first edge surface connected between edges of the light reflect surface and the second surface, and a second edge surface connected between edges of the light incident surface and the second surface, being opposite to the first edge surface. A light source is disposed on the light incident surface. A light guide plate may also include a stepped edge portion formed at a marginal area of the light guide plate on which a light source is combined. The stepped edge portion includes a light incident surface, a light reflect surface, an upper surface through which the reflected light exits the light guide plate, and a first edge surface connected between edges of the light reflect surface and the upper surface, being opposite to the stepped edge portion. A backlight assembly includes the light guide plate, a lamp unit including lamps and a lamp reflector that are disposed on the light incident surface, and a mold frame for receiving the stepped edge portion and the lamp unit.

Claims102

Dependent claims

A light guide plate for adjusting paths of light provided from a light source, comprising:

a first surface having:
a light incident surface on which the light source is disposed and the light is incident;
and
a light reflect surface for reflecting the light provided through the light incident surface;
a second surface facing the first surface, the light reflected by the light reflect surface exiting the second surface;
a first edge surface connected between edges of the light reflect surface and the second surface;
and
a second edge surface connected between edges of the light incident surface and the second surface, the second edge surface being opposite to the first edge surface.

5 more elements

A backlight assembly for providing light, comprising:

a light guide plate including:
a first surface having:
a light incident surface on which the light source is disposed and the light is incident;
and
a light reflect surface for reflecting the light provided through the light incident surface;
a second surface facing the first surface, the light reflected by the light reflect surface exiting the second surface;
a first edge surface connected between edges of the light reflect surface and the second surface;
and
a second edge surface connected between edges of the light incident surface and the second surface, the second edge surface being opposite to the first edge surface;
a lamp unit disposed on the light incident surface, the lamp unit including:
at least one lamp for generating the light;
and
a lamp reflector for reflecting the light from the at least one lamp;
and
a mold frame including:
a channel space for receiving the lamp unit;
and
a groove for receiving an electrical line electrically connected to the lamp unit.

15 more elements

A liquid crystal display device comprising:

a display unit for displaying images by processing image data externally provided;
and
a backlight assembly for providing light to the display unit, the back light assembly including:
a light guide plate including:
a first surface having:
a light incident surface on which the light source is disposed and the light is incident;
and
a light reflect surface for reflecting the light provided through the light incident surface;
a second surface facing the first surface, the light reflected by the light reflect surface exiting the second surface;
a first edge surface connected between edges of the light reflect surface and the second surface;
and
a second edge surface connected between edges of the light incident surface and the second surface, the second edge surface being opposite to the first edge surface;
a lamp unit disposed on the light incident surface, the lamp unit including:
at least one lamp for generating the light;
and
a lamp reflector for reflecting the light from the at least one lamp;
and
a mold frame including:
a channel space for receiving the lamp unit;
and
a groove for receiving an electrical line electrically connected to the lamp unit.

18 more elements

A backlight assembly for providing light, comprising:

a light guide plate including:
a stepped edge portion formed at a marginal area of the light guide plate on which the light source is combined, the stepped edge portion including a light incident surface on which the light from the light source is incident;
a light reflect surface for reflecting the light provided through the light incident surface;
an upper surface facing the light reflect surface, the light reflected by the light reflect surface exiting the upper surface;
and
a first edge surface connected between edges of the light reflect surface and the upper surface, the first edge surface being opposite to the stepped edge portion;
a lamp unit disposed on the stepped edge portion of the light guide plate, the lamp unit including:
at least one lamp for generating the light;
and
a lamp reflector for receiving the at least one lamp and reflecting the light from the at least one lamp;
and
a mold frame including:
a bottom disposed under the lamp unit and being substantially parallel with the upper surface;
and
a side wall extended from a longitudinal edge of the bottom in a direction substantially perpendicular to the bottom, the bottom and the side wall receiving the stepped edge portion of the light guide plate and the lamp unit.

12 more elements

A liquid crystal display device comprising:

a display unit for displaying images by processing image data externally provided;
and
a backlight assembly for providing light to the display unit, the backlight assembly including:
a light guide plate including:
a stepped edge portion formed at a marginal area of the light guide plate on which the light source is combined, the stepped edge portion including a light incident surface on which the light from the light source is incident;
a light reflect surface for reflecting the light provided through the light incident surface;
an upper surface facing the light reflect surface, the light reflected by the light reflect surface exiting the upper surface;
and
a first edge surface connected between edges of the light reflect surface and the upper surface, the first edge surface being opposite to the stepped edge portion;
a lamp unit disposed on the stepped edge portion of the light guide plate, the lamp unit including:
at least one lamp for generating the light;
and
a lamp reflector for receiving the at least one lamp and reflecting the light from the at least one lamp;
and
a mold frame including:
a bottom disposed under the lamp unit and being substantially parallel with the upper surface;
and
a side wall extended from a longitudinal edge of the bottom in a direction substantially perpendicular to the bottom, the bottom and the side wall receiving the stepped edge portion of the light guide plate and the lamp unit.

15 more elements

Dependencies are inferred from the claim text.

Light guide plate with stepped edge and display device having the same

Life of this patent

Light guide plate with stepped edge and display device having the same

Life of this patent

Abstract

Claims102