Method and apparatus for depositing LED organic film
In one embodiment the disclosure relates to an apparatus for depositing an organic material on a substrate, including a source heater for heating organic particles to form suspended organic particles; a transport stream for delivering the suspended organic particles to a discharge nozzle, the discharge nozzle having a plurality of micro-pores, the micro-pores providing a conduit for passage of the suspended organic particles; and a nozzle heater for pulsatingly heating the micro-pores nozzle to discharge the suspended organic particles from the discharge nozzle.
1. A method for depositing a layer of substantially solvent-free organic material on a substrate, comprising:
heating the organic material to form a plurality of suspended organic particles;
delivering the suspended organic particles to a discharge nozzle, the discharge nozzle having a plurality of micro-pores for receiving the suspended organic particles;
processing the suspended organic particles through the plurality of micro-pores to substantially block a portion of the suspended organic particles; and
energizing the discharge nozzle to pulsatingly eject the suspended organic particles from the plurality of micro-pores onto the substrate.
2. The method of claim further comprising positioning the discharge nozzle proximal to the substrate.
3. The method of claim 1 , wherein the step of energizing the discharge nozzle further comprises heating the discharge nozzle.
4. The method of claim 1 , wherein the step of delivering the suspended organic particles further comprises transporting the suspended organic particles with a carrier gas.
5. The method of claim 4 , wherein the carrier gas is inert.
6. The method of claim 1 , wherein the step of energizing the discharge nozzle further comprises mechanically vibrating the discharge nozzle.
7. The method of claim 1 , wherein processing the suspended organic material further comprises processing the suspended organic material through micro-pores having a porous medium to separate a quantity of organic particles from a quantity of solvent.
8. The method of claim 1 , wherein processing the suspended organic material further comprises separating an organic material from a solvent.
9. The method of claim 1 , further comprising deflecting thermal radiation from the discharge nozzle.
10. A method for depositing substantially solvent-free organic film on a substrate, the method comprising:
transporting an OLED solution from a reservoir to a discharge nozzle, the OLED solution having OLED particles in a solvent;
receiving the OLED solution at a plurality of micro-pores of the discharge nozzle, each micro-pore containing a porous medium;
separating a quantity of OLED particles from the solvent at the porous medium of the micro-pores;
removing the solvent from the discharge nozzle; and
dislodging the quantity of organic particles from the discharge nozzle onto a substrate.
11. The method of claim 10 , wherein transporting an OLED solution from a reservoir to a discharge nozzle further comprises heating the OLED solution.
12. The method of claim 10 , wherein the OLED solution comprises a quantity of OLED particles dissolved in solvent.
13. The method of claim 10 , further comprising heating the discharge nozzle to dislodge the quantity of organic particles.