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Backlight module

  • US 10,139,677 B2
  • Filed: 05/01/2015
  • Issued: 11/27/2018
  • Est. Priority Date: 08/20/2008
  • Status: Active Grant
First Claim
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1. A backlight module comprising:

  • at least one light source that emits light;

    a light reflecting member arranged to reflect the light emitted from the light source, the light reflecting member includinga center reflecting part with a rectangular shape having two first opposite side portions and two second opposite side portions,four peripheral reflecting parts each having a trapezoidal shape with a lower base and an upper base that is longer than the lower base, the lower bases being connected to the first and second opposite side portions of the center reflecting part, respectively, the peripheral reflecting parts extending from the first and second opposite side portions of the center reflecting part, respectively,extension parts extending from the upper bases of the peripheral reflecting parts, respectively, with the light reflecting member being integrally formed as a one-piece, unitary member;

    an optical sheet disposed on the light reflecting member; and

    a cabinet including a bottom part, two first side parts and two second side parts, the first and second side parts extending frontward from peripheral portions of the bottom part, respectively, with the first and second side parts defining an interior of the cabinet therebetween and including first and second peripheral edges, respectively, that define an opening of the cabinet,while the light reflecting member is attached to the cabinet, the center reflecting part and the peripheral reflecting parts being disposed within the interior of the cabinet, the peripheral reflecting parts being slanted with respect to the center reflecting part, respectively, and the peripheral reflecting parts extending in an opening direction of the cabinet and outward from the first and second opposite side portions of the center reflecting part, respectively,the extension parts being supported on the first and second side parts,the optical sheet directly contacting with the extension parts in a direction perpendicular to the center reflecting part at a location outside the interior of the cabinet on an opposite side of the opening with respect to the bottom part of the cabinet,side end portions of an adjacent pair of the peripheral reflecting parts abutting against each other to form a corner section of the light reflecting member at a corner portion of the center reflecting part while the light reflecting member is attached to the cabinet, andthe side end portions of the adjacent pair of the peripheral reflecting parts defining an abutment interface while the light reflecting member is attached to the cabinet, the abutment interface extending from the corner portion of the center reflecting part in a direction that intersects with a diagonal of the center reflecting part that extends through the corner portion of the center reflecting part as viewed in the direction perpendicular to the center reflecting part.

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