E.i. Dupont De Nemours and Company

Jeffrey Glenn Innocenzo

Gang Yu

Matthew Stainer

George Elias Zahr

Pui-Yan Lin

Ian David Parker

Govindasamy Paramasivam Rajendran

Gordana Srdanov

Frank S Principe

Runguang Sun

Frank Santo Principe

Richard C Oliver

In the fabrication of a display, such as an OLED display, the OLED layer stack is deposited on an electrode on the substrate. The electrode may be the anode and may comprise indium tin oxide (ITO). Desirably, the deposited films are of uniform thickness over the entire active area of the electrode. If the films are not uniform, then areas that are thicker will not emit light, and areas that are too thin may emit light in a less than optimum efficient way (power loss) and/or result in leakage current leaks through the device in a way that does not generate photons. An active-matrix organic light emitting diode comprises a substrate with a larger well size or wider channel width compared to the emission area. This improves the effective aperture ratio, which improves pixel intensity homogeneity.

Pixel intensity homogeneity in organic electronic devices

The invention provides methods for the production of full-color, subpixellated organic electroluminescent (EL) devices. Substrates used in the methods of the invention for production of EL devices comprise wells wherein the walls of the wells do not require surface treatment prior to deposition of electroluminescent material. Also provided are EL devices produced by the methods described herein.

Methods for producing full-color organic electroluminescent devices

The invention relates to an apparatus and a method of using the apparatus for applying a substantially uniform coating of solution onto a substrate. The apparatus includes a substrate support having a compressible surface.

Process for coating a solution onto a substrate

Apparatus for coating a solution onto a sheet substrate

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Towanda, PA, United States of America

Jeffrey Glenn Innocenzo