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Lighting unit and display provided with the same

  • US 8,465,168 B2
  • Filed: 02/23/2011
  • Issued: 06/18/2013
  • Est. Priority Date: 07/09/2010
  • Status: Expired due to Fees
First Claim
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1. A lighting unit comprising:

  • a light guide plate having a first groove and a second groove formed therein;

    a first light source group accommodated in the first groove; and

    a second light source group accommodated in the second groove;

    wherein the light guide plate has a first light mixing area, a first light emitting area and a second light mixing area in that order from the first groove toward the second groove;

    wherein, in the first light mixing area, the thickness of the light guide plate progressively increases away from the first light source group;

    wherein, in the second light mixing area, the thickness of the light guide plate progressively increases away from the second light source group;

    wherein, in the first light emitting area, the light guide plate is flat-plate-like; and

    wherein the first light mixing area satisfies a relation L01<

    L02 where L01 is a quantity of light per block area of a front surface of the light guide plate, the light leaving the front side after being emitted from the first light source group and L02 is a quantity of light per block area of the front surface of the light guide plate, the light leaving the front side after being emitted from the second light source group.

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