Organic vapor jet print head with redundant groups of depositors

A system comprising:

• a deposition chamber with a controlled atmosphere;
• a print head, disposed within the deposition chamber and in proximity of a substrate, having a die with a micronozzle array at its tip held within a ported clamp;
• a first redundant group and a second redundant group disposed on the micronozzle array,
• wherein the first redundant group is connected to a first delivery line and a first exhaust line which pass through the clamp, and the second redundant group is connected to a second delivery line and a second exhaust line that pass through the clamp,
• wherein the first redundant group and the second redundant group are operated at different times from one another, and
• wherein the first delivery line and the second delivery line from the clamp are coupled at a first valve that switches a delivery flow from a common delivery line between the first delivery line and the second delivery line.

A system comprising:

• a deposition chamber with a controlled atmosphere;
• a print head, disposed within the deposition chamber and in proximity of a substrate, having a die with a micronozzle array at its tip held within a ported clamp;
• a first redundant group of first depositors and a second redundant group of second depositors disposed on the micronozzle array, wherein a first delivery line feeds the first redundant group and the second delivery line feeds the second redundant group, and wherein the first redundant group and a second redundant group are operated at different times from one another,
• wherein the first delivery line connects to a first sublimation source, and the second delivery line connects to a second sublimation source, and
• wherein the first sublimation source and the second sublimation source each has a separately controlled mass flow of heated process gas.