Surface-emitting device and liquid crystal display device with enhanced utilization efficiency of light from light source

A surface-emitting device comprising:

• a light guide panel;
• a light guide placed along an end face of the light guide panel, the light guide containing a reflecting surface having irregularities that reflect light propagating therein and an opposing emergent surface that emits light reflected by the reflecting surface;
• a reflective film that reflects light propagating inside the light guide and the light guide panel formed on the light guide and an end of the light guide panel;
• and
• light sources placed at opposing ends of the light guide,
• wherein a length of the reflective film from the end face of the light guide panel at which the light guide is placed is larger on a side of the reflecting surface of the light guide panel than on a side of the emergent surface of the light guide panel.

A method of increasing luminescence of a surface-emitting device, the method comprising:

• placing a light guide along an end face of a light guide panel having a reflecting side including a reflecting surface containing irregularities that reflect light propagating therein and an emergent surface that emits light reflected by the reflecting surface;
• placing light sources at opposing ends of the light guide;
• and
• introducing a light reflector to the light guide panel, the light reflector reflecting light from the light sources and impinging on the reflecting side toward the emergent surface, the light reflector covering a first section of the reflecting side adjacent to the reflecting surface and a second section of the emergent surface opposing a portion of the first section, the first section larger than the second section.

A surface-emitting device comprising:

• a light guide panel having a reflecting surface containing irregularities that reflect light propagating therein and an emergent surface that emits light reflected by the reflecting surface;
• and
• a light guide placed along an end face of the light guide panel having a reflecting surface containing irregularities that reflect light propagating therein and an emergent surface that emits light reflected by the reflecting surface towards the light guide panel;
• and
• an antireflection layer on one of an outer emergent surface of the light guide and an outer surface end face of the light guide panel opposing the emergent surface of the light guide.

A surface-emitting device comprising:

• a light guide panel having a reflecting surface containing irregularities that reflect light propagating therein and an emergent surface that emits light reflected by the reflecting surface;
• and
• a light guide placed along an end face of the light guide panel having a reflecting surface containing irregularities that reflect light propagating therein and an emergent surface that emits light reflected by the reflecting surface towards the light guide panel,
• wherein the light reflector has an upper surface that is disposed on the first section and a lower surface that is disposed on a second section of the light guide panel opposing the first section, the light that is not emitted from the first section is reflected by the second section.