OLED-TV Display/Monitor Technology News

Although ink-jet (Sumitomo Chemical, Sumation, CDT, etc.), continuous spray (DuPont, Dainippon Screen), roll printing (LG Display, demonstrated for TFT backplanes), and roll-to-roll printing (GE) have gotten most of the attention, there is another, time-tested solution process: slot-coating or extrusion coating, which has been used to apply photoresist, among other things, for decades.
NexTech FAS is the operating company for the process equipment companies NexTech Solutions and FAS Holdings Group, which are in the process of merging.)

Slot coaters put down an unpatterned layer of material, so their most obvious application is for OLED lighting and for the unpatterned layers in an OLED display, such as the hole injection layer (HIL) and the electronic transport layer (ETL). Although patterning of multiple organic layers, such as would be required for an RGB display, is difficult, development work is continuing, Gibson said. And patterning of a single layer, as would be required for a color-by-white or monochrome display, is relatively straightforward.

FOR HIGH PERFORMANCE SPINLESS COATINGAvailable for Gen 2 through Gen 8 substrates.
Able to Coat Organic or Inorganic Liquids on flexible or rigid substrates.
Extrusion coating technology ensures over 95% material use.
Extremely accurate fluid dispense rates and volume control.
Coating thickness range from under 200 angstroms to 150 microns.
Low Fill Volume option limits lot size of high cost polymers and other materials.
Also available for Spinless Coating of 200 and 300mm Wafers.
FEATURESGranite transport base with air bearing and linear motors for smooth operation, accurate coating and high MTBF.
Extremely user friendly Graphical User Interface (GUI) with Touch Screen. Process is completely automated and all parameters are computer controlled.
Each system is supplied by separate fluid cart housing solvent vessels and pumps, as well as production quantities of coating materials.
System performance and reliability has been proven in a production environment.
PROCESS ADVANTAGESExtrusion coating technology maximizes coating fluid utilization without the waste associated with spin coating.
Efficient use of coating fluids and solvents minimizes environmental impact and disposal costs.
Fully automatic extrusion head priming and lip functions, performed between coating runs, ensure repeatable coating performance.
Process is suitable for development applications and scalable to full production. Process is also fully transferable to a roll to roll configuration.
OPTIONSFull atmospheric isolation to allow processing in low oxygen/low moisture environment.
Vacuum chucks are available for a wide variety of substrates, including display glass, flexible plastic film and stainless steel.
Robotic load/unload of substrates; full automation available.
Additional process equipment available with full integration (hot plates, chill plates, cure, inspection, etc.)