We report on the fabrication and simulation of a green OLED with an Internal Light Extraction (ILE) layer. The optical behavior of these devices is simulated using both Rigorous Coupled Wave Analysis (RCWA) and Finite Difference Time-Domain (FDTD) methods. Results obtained using these two different techniques show excellent agreement and predict the experimental results with good precision. By verifying the validity of both simulation methods on the internal light extraction structure we pave the way to optimization of ILE layers using either of these methods.

Analysis of two‐dimensional electrophoresis patterns demands computer assistance. Specialized machines to read and store the pattern of an autoradiograph or of a “wetgel” into a digital memory are rare. A fast and flexible opto‐mechanical picture reading and storage machine, specially designed for the computer‐aided analysis of two‐dimensional electrophoresis patterns, has been constructed. It is now possible to digitize, for example, a picture of 250 × 400 mm into pixels of ca. 250 × 250 μm with a grey level resolution of 8‐bit within 70 s. Digitizing at significant pixel sizes down to 64 μm is possible at correspondingly longer acquisition times for the areas to be digitized. The design is a flat‐bed scanner. One axis is scanned optomechanically (Galvanometer scanned laser beam), the other axis is scanned mechanically. The area covered by the scanning laser beam has a size of 250 × 400 mm or smaller. The control of the scanner, including pixel density and sampling synchronization is executed by a microprocessor system.