Method for controlling the deposition of vaporized organic material

1. A method for controlling the deposition of vaporized organic material onto a substrate surface, comprising:

(a) providing a heating device to produce vaporized organic material;

(b) providing a manifold having at least one aperture through which vaporized organic material passes for deposition onto the substrate surface;

(c) providing a controller operating independently of the heating device and effective in a first condition for limiting the passage of vaporized organic material through the aperture, and effective in a second condition for facilitating the passage of vaporized organic material through the aperture; and

(d) wherein the heating device, or the controller, or both are contiguous to the manifold.

2. The method of claim 1 further including an element movable between a first position which limits the flow of vaporized organic material through the aperture, and a second position which permits the flow of vaporized organic material through the aperture.

3. The method of claim 1 wherein heat from the heating device is decreased when the structure is effective in its first condition and increased when the structure is effective in its second condition.

4. The method of claim 1 , further including diverting the flow of vaporized organic material from the manifold by:

(e) providing a first flow path connected to the manifold;

(f) providing a reservoir connectable to the first flow path to store the diverted vaporized organic material; and

(g) opening the first flow path to the reservoir in the first condition so that vaporized organic material is delivered to the reservoir, and closing the first flow path to the reservoir in the second condition.

5. The method of claim 4 , wherein during the first condition providing a supply of inert gas to the manifold.

6. The method of claim 4 wherein the reservoir is at a temperature below the condensation temperature of the diverted organic material.

7. The method of claim 1 , wherein the controller includes a hollow member, and further including:

i) providing the hollow member in the manifold having a temperature-control surface in the flow path of the vaporized organic material, and such member being effective in the second condition so as to minimally affect the flow of vaporized organic material, and in the first condition to cause the deposition of vaporized organic material onto the surface of the member and not onto the surface of the substrate; and

ii) providing material at a controlled temperature into the hollow member so as to absorb heat from or deliver heat to the temperature control surface of the hollow member.

8. The method of claim 7 further including decreasing the heat applied by the heating device.