Lighting device and vehicle lamp having same
AssigneeLG Innotek Co., Ltd.
InventorsYeong Seok Yu, Do Yub Kim, Se Yeon Choi
Life of this patent
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Abstract
The lighting device disclosed in the embodiment includes a substrate, a light emitting device disposed on a lower surface of the substrate, a reflective layer disposed to face a light emitting surface of the light emitting device, a first resin layer disposed between the substrate and the reflective layer, and a light-transmission control layer disposed on an upper surface of the substrate, wherein the light-transmission control layer may include a liquid crystal layer including a cholesteric liquid crystal, and light emitted through the light emitting surface of the light emitting device may be reflected by the reflective layer and be provided to the light-transmission control layer through the substrate.
Claims20
A lighting device comprising:
- a substrate of light-transmissive material;
- a light emitting device disposed on a lower surface of the substrate;
- a reflective layer disposed to face a light emitting surface of the light emitting device;
- a first resin layer disposed between the substrate and the reflective layer;
- a second resin layer disposed on an upper surface of the substrate;
- and
- a light-transmission control layer disposed on an upper surface of the second resin layer,
- wherein the light-transmission control layer includes a liquid crystal layer including cholesteric liquid crystal,
- wherein light emitted through the light emitting surface of the light emitting device is reflected by the reflective layer and is provided to the light-transmission control layer through the substrate,
- wherein the first resin layer seals the light emitting device,
- wherein the first resin layer is disposed between the reflective layer and the substrate,
- wherein the reflective layer is disposed under a position of the light emitting device,
- wherein the reflective layer includes a plurality of reflective patterns protruding from an upper surface of the reflective layer, and
- wherein a thickness of the second resin layer is smaller than a thickness of the first resin layer.
A lighting device comprising:
- a substrate of light-transmissive material;
- a light emitting device disposed on a lower surface of the substrate;
- a reflective layer disposed to face a light emitting surface of the light emitting device;
- a first resin layer disposed between the substrate and the reflective layer;
- and
- a light-transmission control layer disposed on an upper surface of the substrate;
- and
- a second resin layer disposed between the upper surface of the substrate and the light-transmission control layer;
- wherein the light transmission control layer includes a liquid crystal layer including cholesteric liquid crystal,
- wherein light emitted through the light emitting surface of the light emitting device is reflected by the reflective layer and is provided to the light transmission control layer through the substrate,
- wherein the first resin layer seals the light emitting device,
- wherein the first resin layer is disposed between the lower surface of the substrate and an upper surface of the reflective layer,
- wherein side surfaces of the substrate are exposed between side surfaces of the first resin layer and side surfaces of the second resin layer,
- wherein the reflective layer includes a plurality of reflective patterns protruding from the upper surface of the reflective layer, and
- wherein a thickness of the second resin layer is smaller than a thickness of the first resin layer.
Dependencies are inferred from the claim text.