In stereoscopic displays, the views for both eyes must be clearly separated otherwise crosstalk is observed. Both visibility and annoyance of crosstalk is investigated for a 2‐view 3D display with perception experiments. Results show that a 1% increment in crosstalk is visible, while 5.8% crosstalk is perceptible, but not annoying.
In this work, the properties of Mg1-xZnxO thin films are investigated as an example of a protective layer material with a small bandgap in a plasma display panel, to analyze the impact of these kinds of materials on the discharge properties. Using the first principles calculation method, the electronic structure of Mg1-xZnxO crystal is analyzed, and an analytical formula is obtained for the values of the bandgap. A cubic structure is obtained for x between 0 and 0.625. The secondary electron emission coefficients γ of Neon and Xenon with the Mg1-xZnxO films are then evaluated based on Hagstrum’s theory. The γ value for Xe ions is zero, until a concentration of 0.375 is reached, when the bandgap is about 5.1 eV. At x = 0.375 and beyond the condition for Auger emission by xenon ions is fulfilled, and for x > 0.375 the γ value increases continuously until a value of 0.07 is reached for x = 0.625. The γ value for Ne increases from 0.25 to 0.38 when the ZnO proportion is increased from 0 to 0.625. The discharge characteristics of the SM-PDP with Mg1-xZnxO protective layer are then calculated using the fluid model. When increasing the x value, the working voltage is strongly reduced, while the discharge efficiency is enhanced by about 60% at 20% Xe for a change in x from 0 to 0.625. We find that this increase is mainly caused by increased electron excitation efficiency. Therefore mixed-oxide materials with a small bandgap like MgO-ZnO in principle enable the use of high xenon content plasma displays, while strongly increasing the discharge efficiency.
Abstract— A novel reflective display based on electrowetting technology has gained much attention because of its readability in sun light. This technology can provide high‐efficiency control of the display pixel reflectivity. In the on‐state, the oil droplet is expected to move to the same corner regularly. To realize uniform motion of the oil, it is possible to provide a symmetry‐breaking mechanism in the pixel. However, depending on the uniformity of the processing and the size of the built‐in symmetry breaking, it is possible that the oil actually moves to a different position. The visibility of defects, by the representation of oil‐motion non‐uniformity, depending on different notch pattern, notch size, and defect type, has been investigated in the perception experiments. Results indicate that the influence of the defects is more obvious for the more preferred pattern. The larger the notch sizes, the easier the defects can be observed. The best notch pattern is pointed out. When designing an electrowetting display, these results need to be considered to eliminate the influence of oil‐motion non‐uniformity on the image quality by making the droplet as small as possible or by adding optical layers such as diffusers films.
The electronic structures of flat (200), flat (111) and hydrogenated (111) surfaces are investigated based on firstprinciples calculations. The results reveal that SEE coefficients γ increase in the following order : flat(111)< flat(200)< hydrogenated(111). It is also found that hydrogenation on the MgO (111) surface can reduce band gap and increase the γ value.
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