Phosphor reflecting sheet, light emitting diode device, and producing method thereof
A phosphor reflecting sheet provides a phosphor layer on one side in a thickness direction of a light emitting diode element and provides a reflecting resin layer at the side of the light emitting diode element. The phosphor reflecting sheet includes the phosphor layer and the reflecting resin layer provided on one surface in the thickness direction of the phosphor layer. The reflecting resin layer is formed corresponding to the light emitting diode element so as to be disposed in opposed relation to the side surface of the light emitting diode element.
1. A phosphor reflecting sheet, for providing a phosphor layer on one side in a thickness direction of a light emitting diode element and providing a reflecting resin layer at the side of the light emitting diode element, comprising:
the phosphor layer is continuous without a space in a direction perpendicular to the thickness direction,
the reflecting resin layer is provided on an upper surface of the phosphor layer and is provided with a plurality of through holes,
side surfaces of the reflecting resin layer around each through hole of the plurality of through holes are exposed,
the upper surface of the phosphor layer is exposed from each through hole of the plurality of through holes, and
a release substrate is provided on a lower surface of the phosphor layer,
wherein the reflecting resin layer is in a semi-solid state, and
the release substrate is made of a resin material, has a thickness of 10 to 1000 μm, is flexible, and is configured to curvilinearly peel off from the phosphor layer.
2. The phosphor reflecting sheet according to claim 1 , wherein the reflecting resin layer is in a B-stage state.
3. The phosphor reflecting sheet according to claim 1 , wherein the reflecting resin layer is provided only on the upper surface of the phosphor layer.
4. The phosphor reflecting sheet according to claim 1 , wherein the reflecting resin layer is formed into a grid shape in a plane view.
5. A kit comprising:
a light emitting diode element; and
a phosphor reflecting sheet for providing a phosphor layer on one side in a thickness direction of the light emitting diode element and providing a reflecting resin layer at the side of the light emitting diode element,
wherein the light emitting diode element includes an electrode portion disposed on a lower surface thereof, and
the phosphor reflecting sheet includes:
the phosphor layer that is continuous without space in a direction perpendicular to the thickness direction,
the reflecting resin layer is provided on an upper surface of the phosphor layer and is provided with a plurality of through holes,
side surfaces of the reflecting resin layer around each through hole of the plurality of through holes are exposed,
the upper surface of the phosphor layer is exposed from each through hole of the plurality of through holes, and
the reflecting resin layer is in a semi-solid state corresponding to the light emitting diode element, and
wherein the kit includes the light emitting diode element and the phosphor reflecting sheet as separate components.
6. The kit according to claim 5 , wherein the light emitting diode element is configured to be flip-chip mounted on a diode board.