Backlight generating apparatus of a liquid crystal display device
AssigneeSamsung Electron Devices Co., Ltd.
InventorsJong-ho Park, Kae-seung Lee
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Abstract
A backlight generating apparatus of an LCD device comprising a light-passing plate which is sloped with respect to a diffusing plate by a predetermined angle. The space between the two plates is filled with a diffusing material having a larger index of refraction than that of the light-passing plate. The present invention employs a diffusing plate with a transmissivity of over 30% to increase light efficiency, improve brightness, and decrease power consumption.
Claims13
A backlight generating apparatus of an LCD device comprising:
- a diffusing plate;
- a light-passing plate and a reflecting plate sequentially stacked onto one another, said light-passing plate having a sloped surface which opposes said diffusing plate;
- diffusing material having a selected index of refraction sandwiched between said light-passing plate and said diffusing plate;
- and
- a lamp placed on an edge of said light-passing plate which is closest to said diffusing plate.
A backlight generating apparatus of an LCD device comprising:
- a light-passing plate having a sloped upper surface and a lower surface;
- a diffusing plate stacked on the sloped upper surface of said light-passing plate so that an aperture is created between said light-passing plate and said diffusing plate;
- a reflecting plate opposing the lower surface of said light-passing plate;
- and
- diffusing material disposed in the aperture between said diffusing plate and said light-passing plate having a lower surface that matches the slope of the upper surface of said light-passing plate.
A backlight generating apparatus of an LCD device comprising:
- a light-passing plate having a sloped upper surface and a lower surface;
- a diffusing plate stacked on the sloped upper surface of said light-passing plate so that an aperture is created between said light-passing plate and said diffusing plate;
- diffusing material disposed in the aperture between said diffusing plate and said light-passing plate having a lower surface that matches the slope of the upper surface of said light-passing plate;
- a lamp disposed proximate to an edge of said light-passing plate such that light generated by the lamp is processed through said light-passing plate and then irregularly reflected on the sloped face of said light-passing plate and part of the light is refracted by said diffusing material;
- and
- means for re-reflecting light reflected by said light-passing plate and for directing the re-reflected light to said diffusing material.
Dependencies are inferred from the claim text.