Patent ID: 6866745

Claim:
A processing chamber module for use in manufacturing semiconductor devices, comprising: a chamber having a chamber wall; a storage containing process gases an supplying the process gases into the chamber; an inflow pipe through which the process gases flow from the storage into the chamber; an outflow pipe through which residual gases are exhausted; an insulation plate dividing the chamber into a first region and a second region; a chuck in the second region at the bottom of the chamber; a wafer mounted on the chuck; a power source connected to the chuck to supply power to the chuck and to apply a bias voltage to the chuck; a plasma generator in the first region of the chamber, the plasma generator producing an electromagnetic field to covert the process gase into plasma; at least two light-emission sources located at the chamber wall, the light-emission sources lighting up the inside of the chamber, wherein each of the light-emission sources includes a transparent window shaped like a felt hat, the transparent window having a crown-shaped portion in the middle, a brim in periphery and a hollow from the outside to the inside in the crown-shaped portion, wherein the transparent window is fit into a first opening formed in the chamber wall, a window cover covering and fixing the transparent widow into the first opening of the chamber wall, wherein the window cover is fastened on the chamber wall by first screws and has a second opening in the middle; a light emitter put into the hollow of the transparent window via the second opening of the window cover and connected with a connector, wherein the connector connects the light emitter to the electric power supplier for the electric power; and a fixing bracket attached on the window cover by second screws, the fixing bracket covering the second opening of the window cover, wherein the fixing bracket has a third opening that holds the connector to fix the light emitter in the hollow; an electric power supplier supplying electric power to the light-emission sources; and a viewer port which is installed in the chamber wall and through which an observer observes the wafer and the chamber inside.