Method of producing an optical semiconductor device
A method for producing a light reflecting layer-including optical semiconductor element includes the steps of temporarily fixing electrode surfaces of a plurality of optical semiconductor elements each having the electrode surface provided with an electrode, a light emitting surface opposing the electrode surface and provided with a light emitting layer, and a connecting surface connecting a peripheral end edge of the electrode surface to that of the light emitting surface to a temporarily fixing sheet at spaced intervals to each other; filling a first gap between the optical semiconductor elements that are next to each other with a light reflecting sheet and forming a light reflecting layer on the connecting surfaces of the plurality of optical semiconductor elements; removing the light reflecting layer attaching to the light emitting surfaces of the plurality of optical semiconductor elements; and cutting the light reflecting layer between the optical semiconductor elements that are next to each other.
1. A method of producing an optical semiconductor device, comprising:
providing a plurality of optical semiconductor elements which are arranged on a sheet, each optical semiconductor element having a light emitting surface and peripheral side surfaces, wherein the plurality of optical semiconductor elements is spaced apart from each other by first gaps;
pressing a first sheet onto the plurality of optical semiconductor elements in a configuration of filling in the first gaps and covering the light emitting surface and the peripheral side surfaces of each of the plurality of optical elements surfaces;
removing a first part of the sheet to form a layer with a flat top surface
separating the plurality of optical semiconductor elements from each other by forming a second gap; and filling a second sheet in the second gap inside each first gap.
2. The method of claim 1 , wherein the layer is a phosphor layer.
3. The method of claim 2 , wherein the second sheet is a reflective sheet .
4. The method of claim 1 , wherein the second sheet surrounds the peripheral side surfaces of each of the plurality of optical semiconductor elements .
5. The method of claim 1 , wherein the reflective sheet is reflective to light from the plurality of optical semiconductor elements.
6. The method of claim 1 , wherein each of the plurality of optical semiconductor elements has a plurality of electrodes, the light emitting surface and the plurality of the electrodes are arranged on opposite sides of each optical semiconductor element.