Abstract: Systems and methods for the design and fabrication of OLEDs, including high-performance large-area OLEDs, are provided. Variously described fabrication processes may be used to deposit and pattern bus lines with a smooth profile and a gradual sidewall transition. Such smooth profiles may, for example, reduce the probability of electrical shorting at the bus lines. Accordingly, in certain circumstances, an insulating layer may no longer be considered essential, and may be optionally avoided altogether. In cases where an insulating layer is not used, further enhancements in the emissive area and shelf life of the device may be achieved as well. According to aspects of the invention, bus lines such as those described herein may be deposited, and patterned, using vapor deposition such as vacuum thermal evaporation (VTE) through a shadow mask, and may avoid multiple photolithography steps.

Abstract: Heteroleptic cyclometallated complexes having a 6-membered ring cyclometallated to the metal, as shown in Formula (I), are provided: wherein ring A and ring B are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; wherein L1 is BR, NR, PR, O, S, Se, C?O, S?O, SO2, CRR?, SiRR?, or GeRR?; wherein Z1 and Z2 are independently carbon or nitrogen; wherein at least one of Z1 and Z2 is carbon; wherein is a bidentate ligand selected from the group consisting of: wherein R1, R2, Ra, Rb, Rc, and Rd may represent mono, di, tri, or tetra substitution, or no substitution; wherein R1, R2, R, R?, Ra, Rb, Rc, and Rd are each independently selected from various substituents; and wherein n is 1 or 2. Devices, such as organic light emitting devices (OLEDs) that comprise phosphorescent light emitting materials are also provided.

Abstract: Systems and methods for the design and fabrication of flexible devices, including high-performance large-area OLEDs, narrow border display panels and lighting panels are provided. Various described fabrication- and design-processes may be used to provide the necessary electrical drive to lighting and display panels. Electrical drive may be provided to one or more row- and column-signals by patterning conductive elements near the panel edge. The electrical elements may further be folded over a region near the panel edge back on itself, such that electrical traces may route around the display edge. This may allow the display active area to be substantially the same area as its viewing area, and furthermore may allow pixels go substantially all the way to the edge of the viewing area.

Abstract: A combination of host materials suitable for co-evaporation or premix evaporation, and devices containing the combination of host materials are provided. The combination of host materials provides improved lifetime and efficiency. A method for fabricating devices containing the host material combination is also provided.

Abstract: An organic light emitting device (OLED) configured to emit light uniformly over an emitting area and a method of making the OLED are disclosed. The OLED contains a substrate, an electrode disposed over the substrate, and a light-emitting structure containing an organic material. The light-emitting structure is in contact with the electrode. The OLED contains an electrically conductive cover substantially overlaying the electrode and an electrically conductive connecting material disposed between the electrically conductive cover and the electrode. The electrically conductive material provides an electrically conductive path connecting the electrically conductive cover and the electrode. The electrically conductive cover increases the overall uniformity of emitted light from the OLED.