LED backlighting for displays
First Claim
1. A display system comprising:
- a display panel comprising a first major surface and a second major surface; and
a lighting system adapted to provide light proximal to the second major surface of said display panel;
wherein said lighting system comprises;
an illuminating substrate comprising a first major surface facing said display panel and a second major surface opposite the first major surface, said illuminating substrate comprising a substrate core having a first major core surface and a second major core surface opposite said first major core surface, circuit elements disposed on said second major core surface, and a reflective layer covering at least a portion of the first major core surface, and said substrate core, said circuit elements, and said reflective layer together defining an array of mounting holes through said illuminating substrate with the light reflective layer covering at least a portion of the first major surface of said illuminating substrate and said circuit elements comprising at least a portion of said second major surface of said illuminating substrate; and
an array of light emitting diode (LED) modules, each module comprising an LED chip, wherein each of said modules is substantially adjacent to the second major surface of said illuminating substrate and forms an electrical connection with the circuit elements of the second major surface of said illuminating substrate and at least a portion of each of the LED modules occupying a corresponding mounting hole of the array of mounting holes and wherein said LED chip is directed towards the second major surface of said display panel.
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Accused Products
Abstract
A display system including a display panel having a first major surface and a second major surface and a lighting system adapted to provide uniform luminance proximal to the display panel is disclosed. The lighting system includes an illuminating substrate having a first major surface with reflective coating and a second major surface. The illuminating substrate defines an array of mounting holes, each hole occupied by an LED module. An array of light emitting diode (LED) modules are affixed to the illuminating substrate, each module including at least one light emitting diode adapted to emit light. The lighting system can also include a diffusant layer which can be optically coupled to the illuminating substrate by soft optical gel and is placed close to or made to contact the display panel. The optical gel may contain phosphors or other optical substance for added optical performance to the lighting system. The diffusant layer has beveled edges at critical angle of refraction or coated with reflective material to minimize light loss at its edges. Each of the LED modules includes at least one LED chip, conductive traces connected to the LED chip and a heat sink.
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Citations
27 Claims
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1. A display system comprising:
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a display panel comprising a first major surface and a second major surface; and a lighting system adapted to provide light proximal to the second major surface of said display panel; wherein said lighting system comprises; an illuminating substrate comprising a first major surface facing said display panel and a second major surface opposite the first major surface, said illuminating substrate comprising a substrate core having a first major core surface and a second major core surface opposite said first major core surface, circuit elements disposed on said second major core surface, and a reflective layer covering at least a portion of the first major core surface, and said substrate core, said circuit elements, and said reflective layer together defining an array of mounting holes through said illuminating substrate with the light reflective layer covering at least a portion of the first major surface of said illuminating substrate and said circuit elements comprising at least a portion of said second major surface of said illuminating substrate; and an array of light emitting diode (LED) modules, each module comprising an LED chip, wherein each of said modules is substantially adjacent to the second major surface of said illuminating substrate and forms an electrical connection with the circuit elements of the second major surface of said illuminating substrate and at least a portion of each of the LED modules occupying a corresponding mounting hole of the array of mounting holes and wherein said LED chip is directed towards the second major surface of said display panel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A lighting system comprising:
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an illuminating substrate comprising a first major surface and a second major surface opposite the first major surface, the illuminating substrate comprising a substrate core having a first major core surface and a second major core surface opposite the first major core surface, circuit elements disposed on the second major core surface, and a reflective layer covering at least a portion of the first major core surface, and the substrate core, the circuit elements, and the reflective layer together defining at least one mounting hole through the illuminating substrate with the light reflective layer comprising at least a portion of the first major surface of the illuminating substrate and the circuit elements comprising at least a portion of the second major surface of the illuminating substrate; and at least one light emitting diode (LED) module, the module comprising an LED chip, wherein the module is substantially adjacent to the second major surface of the illuminating substrate and forms an electrical connection with the circuit elements of the second major surface of the illuminating substrate and at least a portion of the LED module occupies the mounting hole. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An illuminating substrate comprising:
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a first major surface; a second major surface opposite the first major surface; a substrate core having a first major core surface and a second major core surface opposite the first major core surface; circuit elements disposed on the second major core surface, the circuit elements comprising at least a portion of the second major surface of the illuminating substrate; and a reflective layer covering at least a portion of the first major core surface with the light reflective layer comprising at least a portion of the first major surface of the illuminating substrate, and the substrate core, the circuit elements, and the reflective layer together defining at least one mounting hole through the illuminating substrate.
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Specification