Patent ID: 8897631
Filing Date: 2014-11-25
Classification: H01L

Abstract:
1. An annealing apparatus comprising: a plurality of light emitting diode (LED) arrays; a cooling member to which the LED arrays are fixed and made of aluminum or aluminum alloy; a cooling unit configured to cool the cooling member by using a cooling medium; and a plurality of reflection plates, wherein each of the LED arrays is constituted as a single unit including a plurality of light emitting elements configured to emit lights to a target substrate to be processed, a supporter having a first surface on which the light emitting elements are mounted and a second surface opposite to the first surface, wherein the light emitting elements are mounted on the first surface by using a high thermally conductive first adhesive substance, and the supporter is made of a high thermally conductive second insulating material, a thermal diffusion member adhered to the second surface of the supporter by using a high thermally conductive second adhesive substance, the thermal diffusion member being made of copper, a reflection layer formed on the first surface of the supporter, and plural lens layers respectively covering the light emitting elements, wherein the LED arrays are fixed to the cooling member via a high thermally conductive third adhesive substance, and wherein, for a first LED array and a second LED array each of which comprising said single unit, a first reflection plate and a second reflection plate of the plurality of the reflection plates are respectively provided only along first and second sides of the first and second LED arrays, said first reflection plate is provided along at least one peripheral edge of the first LED array in a position adjacent a side of the second LED array where no reflection plate is provided.